Clock.

专利摘要:
A clock is presented in which the width of an edge element (21) is small. The watch has a housing (12) which accommodates a dial (53) as a display panel opposite a transparent element (26), the edge element (21) having an edge section (22) which extends outside one of a central part (13) of the Housing (12) encompassed interior space is arranged, and a cylindrical portion (23) which is arranged within the interior space encompassed by the central part (13). The edge portion (22) supports the transparent element (26). The cylindrical portion (23) supports the peripheral portion of the dial (53) in the direction of the front of the case (12) and specifies the display diameter (D) of the dial (53). A receiving section (24) extends from the outer circumference of the cylindrical section (23) or from the cylindrical section (23) towards the rear of the housing (12). The edge element (21) is attached to the middle part (13) by a pull-in mechanism (61) which is equipped with a pull-in element (62) and a pull-in screw (69) as a screw unit. The retraction element (62) has a plate section (63) which faces in the direction of the rear side of the dial (53) and an engagement section (66) which is provided on the peripheral section of the plate section (63) and which is inserted into the receiving section (24) is hooked from the front of the housing (12). On the inside of the outer circumference of the dial (53), the screw (69) is in screw engagement with the retraction element (62) so that it can be removed from the rear of the housing (12).
公开号:CH712078B1
申请号:CH00067/17
申请日:2017-01-20
公开日:2021-05-14
发明作者:Iguchi Katsunobu
申请人:Seiko Instr Inc；
IPC主号:

专利说明:

BACKGROUND OF THE INVENTION
1. Technical field of the invention
The present invention relates to a watch such as a portable watch such as a wrist watch or a pocket watch, a table clock and a wall clock.
2. State of the art
With regard to a wristwatch, etc., various arrangements are known in which a rim member which supports a transparent member (conventionally made of glass) against a dial is attached to a central part of a case.
In a first example, a first insert, which comprises part of the edge element and has a round outer circumference, is inserted from the front of the housing into an interior which is formed in the central part and whose inner circumference is surrounded by a round fastening portion of the edge element and wherein between the insert piece and the fastening section of the edge element, a ring made of a soft plastic is held in a position in which it is compressed in the radial direction of the housing. Due to this arrangement, the edge element is attached to the central part via the ring. In this fastening situation, the edge section of the edge element, which supports the transparent element, covers the fastening section of the edge element in contact with the fastening section of the edge element on the front side of the housing.
In a second example, an insert piece which comprises part of the edge element and has a round outer circumference is forced from the front of the housing into an interior which is formed in the central part and whose inner circumference is surrounded by a round fastening portion of the edge element is, and wherein an engagement recess which is formed such that it is open on the inner circumferential surface of the fastening portion of the edge element and an engagement projection which extends from an outer circumferential surface of the insert piece of the edge element, engage with each other like a hook. With this arrangement, the edge member is attached to the central part in a position in which the attachment portion of the edge member is held between the edge portion of the edge member which supports the transparent member and the engaging projection. In this fastening situation, the edge section of the edge element covers the fastening section of the edge element, standing in contact with the fastening section of the edge element on the front side of the housing.
In a third example, an inner circumferential surface of a fastening portion of an edge element which is formed on a central part and whose inner circumference is round, and an outer circumferential surface of an insert which comprises a part of an edge element whose outer circumference is round and which of the fastening portion is of the edge element of the central part, each formed with inclined surfaces with gradually decreasing diameter, extending in the direction of the front of the housing. And the insert is forced into the inner space which is surrounded by the fastening portion of the edge element. As a result, the edge element is fastened to the middle part in a position in which the inner circumferential surface of the fastening section of the edge element and the outer circumferential surface of the insert piece are in contact with one another. In this fastening situation, the edge section of the edge element, which supports a transparent element, covers the fastening section of the edge element in contact with the fastening section of the edge element on the front side of the housing.
When corrections are made during the manufacture of a watch and when maintenance work is carried out on the watch, the edge element can be detached from the central part. In this case, in the above-mentioned first to third examples, a tool is inserted between the fastening section of the edge element and the edge section of the edge element covering it, and the tool is pried open, the edge element being removed. Accordingly, the middle part and the edge element can be damaged when the edge element is prized open.
Further, in the first to third examples, it is impossible if the edge member is fixed to the center part by the operation of inserting or swinging the insert piece of the edge member into the inner space surrounded by the fixing portion of the edge member of the center part, and also when the edge member is detached from the central part as described above, to avoid tension acting on the edge portion. Accordingly, in the arrangement in which the transparent member is supported by the edge portion of the edge member using an adhesive, there is a risk that the adhesive is separated due to the above-mentioned stress. In order to cope with this, it is necessary to adopt an arrangement in which soft resin is provided between the edge portion of the edge member and the transparent member, so that the degree of freedom of design for supporting the transparent member is rather low.
In addition, in the above-mentioned third example, when the edge member is repeatedly attached to and detached from the center part, both the inner peripheral surface of the attachment portion of the edge member and the outer peripheral surface of the insert piece of the edge member interfere with each other and there is a great possibility of scraping . Accordingly, the reproducibility of an effective fastening of the edge element to the central part is low.
On the other hand, wrist watches without the above-mentioned various problems are known (e.g. JP-A-2002-189084 (Patent Document 1)).
In this wristwatch, a screw hole is formed in the edge member that supports the transparent member, which extends up to the edge portion, and in the central part in which a clockwork with hands and a dial is received, a screw outlet opening is in Connection formed with the screw hole of the edge member. And a screw, which is inserted into the screw outlet opening from the back (rear wall side) of the central part in the direction of the screw hole, is screwed into the screw hole of the edge portion, with a water-resistant seal, which is arranged between the edge portion of the edge element and the fastening portion of the edge element of the middle part , and which is covered by this edge section. By fastening this screw, the edge element is drawn in against the rear side from the front of the housing and the edge element is fastened to the central part, the edge portion of the edge element covering the fastening portion of the edge element, standing in contact with the fastening portion of the edge element on the front side of the housing .
The insert, which has the edge element which supports the transparent element, determines the display diameter of the dial, which is arranged within the central part opposite the transparent element. Here, the display diameter of the dial corresponds to the diameter of the dial area, with the exception of the peripheral area of the dial, which is supported by and covered by the edge element; in other words, it is the diameter of the dial area which is visible through the transparent element and it is smaller than the outer diameter of the dial.
The display diameter is given in accordance with the above, wherein if the width of the edge element, especially the width of the edge portion is large, the display diameter is small in the case when the size of the housing is given; furthermore, in the case in which the diameter of the dial is predetermined, the size of the case is large.
As the population ages, there is a demand for an increase in the display diameter of the dial. In this case, the size of a human wrist corresponds to that of the past, so that in the case of a wristwatch, for example, there is a demand for an increase in the display diameter of the dial while avoiding an increase in the size of the housing.
In the wrist watch described in Patent Document 1, however, the screw for fixing the edge member is arranged on the central part on the outside of the outer periphery of the dial and the screw hole is provided on the edge portion of the edge member in accordance with the screw outlet opening which the Screw happens. In the wrist watch described in Patent Document 1, in which the edge portion thus has the screw hole, the width of the edge member is large. Accordingly, the wrist watch described in Patent Document 1 cannot meet the above-mentioned requirements.
SUMMARY OF THE INVENTION
It is an object of the present invention to propose a timepiece in which the width of the rim member which is attached to the central part of the case and which supports the transparent member is small.
The above-mentioned object is achieved according to the invention in that a clock is proposed, with a housing in which a clockwork is received, the housing comprising a display panel opposite a transparent element, and an edge element and a central part, wherein the edge element is fastened to the middle part by means of a retraction mechanism, the edge element having an edge section which is arranged outside an interior space enclosed by the center part and which supports the transparent element, as well as a cylindrical section which is in contact within the interior space enclosed by the center part stands with a peripheral portion of the display panel and supports the display panel in the direction of the front of the housing in order to specify the display diameter of the display panel and a receiving portion, which extends from the outer periphery of the cylindrical portion or from the cylindrical portion in the direction of the rear ite of the housing extends; and wherein the retracting mechanism comprises a plate portion which is arranged within the inner space enclosed by the central part so that it faces the rear side of the display panel, and a retraction element which is formed on the peripheral portion of this plate portion, and an engaging portion which is formed, to hook onto the receiving section from the front of the housing, and a pull-in screw unit which is located on the inside of the outer circumference of the display panel and which can be screwed into the plate section from the rear of the housing.
In the watch according to the invention, an engaging portion of the retraction member is hooked to the receiving portion of the edge member from the front of the housing. So that due to the pulling in, which affects the edge member by fastening the screw unit of the pulling mechanism, the edge member supporting the transparent member is attached to the central part, the edge portion of which covers the central part on the front side of the housing. By loosening the screw unit of the pull-in mechanism on the rear side of the housing and removing it from the pull-in element, it is possible to release the hooking between the receiving portion of the edge element and the engagement portion of the pull-in element. Thus, in the event of maintenance or the like, the edge element can be removed from the central part at the front of the housing.
At the stage in which the edge element is attached to the central part, the retraction mechanism which attaches the edge element to the central part and the receiving portion of the edge element are arranged on the rear side of the housing with respect to the edge portion of the edge element; Furthermore, the plate portion of the pull-in element, which includes the pull-in mechanism, is arranged opposite the rear side of the display panel, and the screw unit, which includes the pull-in mechanism, is arranged on the inside of the outer circumference of the display panel. In this arrangement, the screw unit is not arranged on the outside of the outer circumference of the display panel, so that there is no need to provide the edge section of the edge element with a screw hole for receiving the screw unit. Accordingly, it is possible to reduce the width of the edge member that supports the transparent member.
Furthermore, according to a preferred embodiment of the watch according to the present invention, the inner peripheral surface of the cylindrical portion merges continuously into the dial at a right angle.
According to the preferred embodiment, on condition that the opening diameter at the front of the housing of the cylindrical portion is the same, it is possible to use a larger display diameter of the display panel than compared with the arrangement in which the inner peripheral surface of the cylindrical portion is formed with gradually decreasing diameter towards the rear of the housing.
Furthermore, according to a preferred embodiment of the timepiece of the present invention, the engaging portion has an engaging portion base which extends from the outer periphery of the plate portion toward the front of the case and is disposed between the inner peripheral surface of the central part and the outer periphery of the display panel and a hook portion formed on the engagement portion base and hooked into the receiving portion provided on the outer periphery of the cylindrical portion.
According to the preferred embodiment, the engagement section base of the engagement section encompassed by the retraction element is arranged between the inner circumferential surface of the central part and the outer circumference of the display panel, so that when the hook section of the engagement section is hooked into the receiving section provided on the cylindrical section from the front of the housing the display panel is fixed on the front of the housing. Accordingly, it is possible to fix the rim member to the central part by means of the fastening of the screw unit, so that there is no need to provide the rim portion of the rim member with a screw hole for receiving the screw unit. It is thus possible to reduce the width of the edge element which supports the transparent element.
Furthermore, according to a preferred embodiment of the watch according to the present invention, a plurality of receiving portions are provided at intervals in the circumferential direction of the cylindrical portion and engagement portions are provided at intervals on the outer periphery of the plate portion in the same number as the receiving portions; and each of the hook portions can pass a recess formed between the receiving portions adjacent in the circumferential direction of the cylindrical portion and is hooked into the receiving portions when the hook portions are shifted from the recesses in the circumferential direction.
According to the preferred embodiment, the hooking between the hook portion of the engagement portion and the receiving portion, which is provided on the outer circumference of the cylindrical portion, is possible from the front of the housing with respect to the dial by changing the relative position in the circumferential direction of the edge element and the retraction member can in the position in which the hook portion, which is formed on the engagement portion base and is arranged between the inner peripheral surface of the central part and the outer periphery of the display panel, the recess of the cylindrical portion has passed, a position in which the hook portion in the Receiving portion is hooked from the front of the housing. Accordingly, it is possible to attach the edge member to the central part by attaching the screw unit.
Accordingly, by moving in the circumferential direction, it is possible to pass the hook portion in relation to the recess and the relative position of the edge element and the retraction element, the retraction element, the clockwork, which has the display panel, the edge element, which successively the transparent member supports, etc. in the order to be mounted on the central part; however, it is preferred if the retraction element, the clockwork which has the display panel, the edge element which supports the transparent element etc. are assembled outside the central part. And, in the latter case, a composition is formed in which the retracting member, the timepiece having the display panel, the rim member supporting the transparent member, etc. are composed and in which the hook portion can be hooked into the receiving portion so that this composition can be attached to the central part by means of a screw unit.
Furthermore, according to a preferred embodiment of the clock according to the present invention, the plurality of receiving portions to the front of the housing open engagement recesses with substantially the same width as the hook portions at positions which are displaced in the circumferential direction of the edge element with respect to the recess and the hook portions are hooked into the receiving portions and are engaged with the engagement recesses from the front of the housing.
According to the preferred embodiment, the hook portion is hooked into the receiving portion in a position in which the hook portion is in engagement with the engagement recess of the receiving portion, so that it is possible, the edge element, which is attached to the middle part, by the pulling mechanism to be attached in such a way that it does not move in an unfavorable manner in its circumferential direction. Thus, in the case of a timepiece in which an image such as a mark is displayed on the edge portion of the edge member, it is possible to prevent the positioned image such as a mark from deviating from a predetermined position. At the same time, when the above-mentioned composition is inserted and fixed to the central part by means of a screw unit, the hooking of the hook portion in the receiving portion is maintained by the above-described locking, wherein the composition can be fixed in a position on the central part by the screw unit, in which the edge element and the retraction element are brought into a suitable position.
Furthermore, according to a preferred embodiment of the clock according to the present invention, the receiving portion, which extends from the cylindrical portion in the direction of the rear of the central part, a receiving portion base, which is between the inner peripheral surface of the central part and the outer periphery of the display panel and a locking portion formed on the receiving portion base and configured to receive the engaging portion formed on the peripheral portion of the plate portion from the rear of the case.
According to the preferred embodiment, the receiving section base of the receiving section, which extends from the cylindrical section in the direction of the rear of the central part, is arranged between the inner circumferential surface of the central part and the outer circumference of the display panel. Accordingly, on the rear side of the housing with respect to the display panel, an arrangement is provided in which the engaging portion, which is formed on the peripheral portion of the plate portion with which the retraction member is equipped, is hooked into the locking area of the receiving portion on the front of the housing. It is thus achieved that it is possible to fasten the edge element to the middle part by fastening the screw unit in such a way that there is no need to provide a screw hole for receiving the screw unit in the edge section of the edge element. It is thus possible to reduce the width of the edge element which supports the transparent element.
Furthermore, according to a preferred embodiment of the timepiece according to the present invention, a plurality of receiving portions are provided at intervals in the circumferential direction of the cylindrical portion, and the engaging portions are provided at intervals on the outer periphery of the plate portion in the same number as the receiving portions ; and each of the receiving portions can pass through a recess formed between engaging portions adjacent in the circumferential direction of the plate portion, and the engaging portions are received from the rear of the housing. when these are shifted from the recess.
According to the preferred embodiment, in the arrangement in which on the rear of the housing with respect to the display panel, the engagement portion of the plate portion is hooked from the front of the housing in the locking area of the receiving portion, which extends from the cylindrical portion in the direction the rear side of the central part extends, the locking area which is formed on the receiving portion base, which is arranged between the inner peripheral surface of the central part and the outer periphery of the display panel, passes the recess between adjacent engagement portions of the plate portion and in this position is the relative position in the circumferential direction of the Edge member and the retracting member changed, it is possible to reach a position in which the engaging portion and the locking portion can hook into each other in the direction of the thickness of the housing. Thus, the edge element can be mounted on the central part by fastening the screw unit from the rear of the housing.
Accordingly, it is possible that the receiving portion of the edge element passes the recess of the retraction element and to change the relative position of the edge element and the retraction element in the circumferential direction, so that successively the retraction element, the clockwork with the display panel, and the edge element, which transparent element supports on the central part in the order it can be mounted. It is more preferable to assemble the retractable element, the clockwork with the display panel and the edge element supporting the transparent element outside the central part. And in the latter case, the retracting member, the clockwork with the display panel and the edge member supporting the transparent member are assembled to form a composition in which the hook portion of the retracting member and the locking portion of the receiving portion can be hooked to each other, so that it is possible is to mount this assembly on the middle part through the screw unit.
According to a preferred embodiment of the clock according to the present invention, the screw unit is a screw which screw-engages the plate section.
Furthermore, according to the preferred embodiment, an inexpensive general-purpose screw can be used as the screw unit.
Furthermore, according to a preferred embodiment of the clock according to the present invention, the entire screw is arranged within the interior space encompassed by the central part, and the screw is covered by a rear wall of the housing which is mounted on the central part.
According to the preferred embodiment, the screw is covered by the rear wall of the housing, so that the rear of the housing has a satisfactory appearance. At the same time, there is no need to drill holes in the rear wall of the housing in order to insert the screw, which is also desirable in order not to form a penetration path for water in the rear wall of the housing.
Furthermore, according to a preferred embodiment of the clock according to the present invention, the housing is equipped with a housing rear wall which is arranged in such a way that it is in contact with the central part on the rear side of the housing and the retraction element further has an annular pipe section, which extends from the plate portion in the direction of the rear side of the housing and has a female screw portion on the inner peripheral surface thereof so as to be rotatably disposed with respect to the central part; and the screw unit is formed on the case rear wall as a male screw portion which is screw-engaged with the female screw portion.
According to the preferred embodiment, the retraction element is arranged in a rotationally fixed manner with respect to the central part and the male screw section, which is formed on the rear wall of the housing, is screwed into the female screw section of the annular tube section which the retraction element comprises. It follows that the housing rear wall is mounted in contact with the central part on the rear side of the housing and the edge element is mounted on the central part via the retraction element. Accordingly, the male screw portion of the case rear wall also serves as the screw unit, so that it is possible to achieve a reduction in the number of components.
Furthermore, according to a preferred embodiment of the watch according to the present invention, the receiving portion, which is provided on the outer circumference of the cylindrical portion and the hook portion, which is provided on the retraction element, are each formed in a plurality in the direction of the thickness of the housing, and hooked together. In this preferred embodiment, the receiving section can be formed by the male screw section; Furthermore, the plurality of receiving sections and hook sections are each designed as recesses and projections, and it is possible to provide a recess between receiving sections that are adjacent in the circumferential direction.
According to the preferred embodiment, the receiving sections and the hook sections are essentially hooked into one another at a plurality of positions in the direction of the thickness of the housing. Accordingly, even in the case that the protruding width of the receiving portions and the hook portions is small, the reliability of the hooking between the receiving portions and the hook portions is enhanced, and it is possible to mount the rim member on the center part by the pulling mechanism with greater reliability
Furthermore, according to a preferred embodiment of the clock according to the present invention, a head region of the screw is visibly arranged in the back of the housing.
According to this preferred embodiment, the head area of the screw is not covered by the housing, and it is possible to visually check whether or not it is in a predetermined position on the rear of the housing. This makes it possible to ensure that the screw has been installed without errors in maintenance work or the like.
According to the present invention, it is possible to provide a timepiece in which the width of the rim member which is attached to the central part and supports the transparent member is small.
Brief description of the drawings
Fig. 1 is a perspective view of a wrist watch according to a first embodiment of the present invention. FIG. 2 is a partial view showing parts of the wrist watch shown in FIG. 1. Fig. 3 is a perspective view of a composition attached to a center portion of a first wrist watch. Fig. 4 is an exploded perspective view of the composition shown in Fig. 3. Fig. 5 is an exploded perspective view of the wrist watch shown in Fig. 1. Fig. 6 is a sectional view showing part of a wrist watch according to a second embodiment of the present invention . Fig. 7 is a perspective view, partially cut away, showing a part of a composition mounted on a central part of a wrist watch according to the second embodiment. Fig. 8 is an exploded perspective view of the composition shown in Fig. 7. Fig. 9 is an exploded perspective view of the wrist watch according to the second embodiment. Fig. 10 is a sectional view showing a part of a wrist watch according to a third embodiment of the present invention. Fig. 11 is a perspective view of a composition mounted on a central part of a wrist watch according to the third embodiment. Fig. 12 is an exploded perspective view of the composition shown in Fig. 11. Fig. 13 is an exploded perspective view of the wrist watch according to the third embodiment. Fig. 14 is a sectional view showing part of a wrist watch according to a fourth embodiment of the present invention. Fig. 15 is a sectional view showing part of a wrist watch according to a fifth embodiment of the present invention
DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
The first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
In FIGS. 1, 2, and 5, reference numeral 11 designates a watch, for example a portable watch, in particular a wrist watch. The wristwatch 11 comprises a housing 12 which forms the outside thereof.
As shown in FIGS. 1 and 2, the housing 12 is equipped with a central part 13, an edge element 21, a transparent element 26 and a rear wall 31 of the housing.
The middle part 13 is a one-piece arrangement and is preferably formed from metal such as stainless steel or titanium; however, it can also be made of a synthetic plastic. Both sides in the direction of the thickness of the central part 13 are each open. As shown in FIG. 2, the central part 13 has an annular edge receiving surface 13a which comprises a flat surface which is continuous in the circumferential direction and an annular cover receiving surface 13b which also comprises a flat surface which is continuous in the circumferential direction. The edge receiving surface 13 a is formed by an end surface in the direction of the thickness of the central part 13, which is located on the front side of the housing 12.
As shown in Fig. 2, a central part bottom portion 14 is provided at the other end portion area in the direction of the thickness of the central part 13. The central part bottom section 14 extends integrally in the direction of the interior of the central part 13 and is formed continuously with a gap in the circumferential direction, as shown in FIG. 5. The lid receiving surface 13b is arranged on the rear side of the housing 12 and is formed, for example, from the rear side of the central part bottom portion 14, it also serving as the other end surface in the direction of the thickness of the central part 13.
The central base element section 14 has a through opening 15, a locking recess 16 and a sealing groove 17.
The through hole 15 is provided at a plurality of positions on the inner peripheral surface portion of the center part bottom portion 14, for example, at four positions as shown in Fig. 5, so as to extend through the inner peripheral surface portion in the direction of its thickness. It is desirable that these through openings 15 are provided at intervals in the circumferential direction and particularly preferably at equal intervals.
As shown in Fig. 5, the locking recesses 16 are provided at intervals in the circumferential direction of the central part 13 with respect to the base side portion of the central part bottom portion 14 and each is formed as a recess open to the interior of the central part 13.
The sealing groove 17 is provided so continuously without interruption in the circumferential direction that it is open to the lid receiving surface 13b at the base side portion and an annular waterproof seal 18 made of a sealing material having elasticity such as rubber is received therein.
The middle part 13 has connecting projections 19 which protrude in one piece from its outer circumferential surface. A bracelet member such as a band or a belt (not shown) is connected to the pair of connecting protrusions 19 opposite in the 3 o'clock - 9 o'clock direction of the watch. Further, as shown in FIG. 5, an elevator shaft through hole 20 is formed in the central part 13 so as to extend in the radial direction thereof
As shown in Fig. 2, etc., the edge element 21 of the housing 12 comprises an edge portion 22, a cylindrical portion 23 and a receiving portion 24. The edge element 21 is a one-piece component, and is preferably made of a metal such as stainless steel and Made of titanium; however, it can also be made of a synthetic plastic.
The edge section 22 is arranged outside the middle part 13 and is a section which covers the edge receiving surface 13a of the middle part 13. On the rear side of the edge portion 22, a continuous sealing groove 22a is formed without interruption in the circumferential direction, and an annular waterproof seal 25 made of an elastic sealing material such as rubber is fitted therein
A cylindrical portion 23 is a portion which integrally extends from the inner peripheral rear side surface of the rim member 22 and which is inserted into the central part 13 to be disposed therein. An inner peripheral surface 23 a of the cylindrical portion 23 has a smaller diameter than the inner peripheral surface of the rim portion 22. The inner peripheral surface 23a of the cylindrical portion 23 is a parting surface which determines the display diameter of the dial as described below. It is desirable for the diameter of the inner peripheral surface 23a to be fixed and not show any change in the height direction of the edge member 21; however, it may gradually increase in size as it reaches the edge portion 21.
The cylindrical portion 23 has a disk receiving surface 23b. The disk receiving surface 23b is formed, for example, by the end surface of the cylindrical portion 23 located on the rear surface of the case 12; however, it may be formed between the end surface of the cylindrical portion 23, which is located on the rear side surface of the housing 12, and the end surface of the cylindrical portion 23, which is located on the front side of the housing 12.
The end surface of the cylindrical section 23, which is located on the front side of the housing 12, and the inner circumferential surface of the edge section 22 form an element receiving surface 21b which merges therewith at right angles. In Figs. 1 to 4, numeral 26 denotes a transparent member which is formed in a round shape from a transparent material such as transparent glass or transparent synthetic plastic. The transparent member 26 is supported by the edge portion 22 in a position in which the peripheral surface thereof and the peripheral portion rear side surface are in contact with the element receiving surface 21b. The outer circumferential surface of the transparent element 26 is glued to the inner circumferential surface of the edge section 22 by means of an adhesive 27 (see FIG. 2).
Instead of gluing, it is also possible to attach a waterproof seal to the inner peripheral surface of the edge portion 22 in an exposed position and cause the edge portion 22 to support the transparent member 26 with the outer peripheral surface of the transparent member in close contact with the inner peripheral surface of the waterproof seal is held. However, in the above-mentioned adhesive arrangement, there is no need to make a receiving groove for the waterproof seal in the edge portion, and the height of the edge portion 22 can advantageously be reduced.
The receiving portions 24 extend, for example, from the outer circumference of the cylindrical portion 23 and, as shown in Fig. 4, etc., distances are provided, in particular equal distances, in a plurality in the circumferential direction of the cylindrical portion 23. The distances between the receiving sections 24, which are adjacent to the cylindrical section 23 in the circumferential direction, form recesses 28 of the bottom surfaces, on whose outer circumferential surface of the cylindrical section 23 they are formed. The width of the receiving sections 24, which extend in the circumferential direction of the cylindrical section 23, is greater than the width of the recesses 28, which extend in the circumferential direction of the cylindrical section 23. Each receiving portion 24 has an engaging recess 24 a at a position which is shifted in the circumferential direction of the edge member 21 with respect to the recess 28. The engagement recesses 24a are open on the side of the edge portion 22 (in other words, on the front side of the housing 12) and their length is substantially equal to the width of the recesses 28.
The rear side of the case 12 is in contact with the arm of the wearer of the wristwatch 11. It is desirable for the case rear wall 31 that the rear side thereof is formed from metal such as stainless steel or titanium; however, it can also be formed from synthetic plastic. As shown in FIGS. 2 and 5, the housing rear wall 31 comprises, integrally at the peripheral portion, a fastening wall 32 which is of an annular shape and which is of a smaller diameter than the housing rear wall 31. On the outer circumferential surface of the fastening wall 32, engagement projections 33 are provided in the same number as the locking recesses 16 and in the same arrangement as the locking recesses 16. The fastening wall 32 of the housing rear wall 31 is inserted into the central part 13 from the rear side of the housing 12, the housing rear wall being fastened to the central part 13 in that the engagement projections 33 are gripped by the locking recesses 16 of the central part 13. With this fastening, the peripheral portion of the case rear wall 31 is held in a position in which it is in contact with the lid receiving surface 13b with the waterproof seal 18 which is deformed to be compressed.
As shown in FIG. 2, a clockwork 51 is received in the housing 12 with a retaining ring 41.
The retaining ring 41 is made of metal or plastic or the like; As shown in Fig. 5, it has a ring-like portion 42, a pair of divided plate portions 43 which are parallel to each other, and projections 44 which extend from the divided plate portions 43, respectively. The inner periphery of the retaining ring 41 is formed by the ring-like portion 42 and the pair of divided plate portions 43, and the inner periphery is not round in shape. The outer circumference of the retaining ring 41 is essentially round in shape. The diameter of the outer circumference of the retaining ring 41 is essentially the same as the diameter of the inner circumference, so that it can be fitted into the inner circumference of the central part bottom section 14.
The retaining ring 41 includes a pair of engagement recesses 45 (only one shown in Fig. 2) on the side of the ring-like portion 42 opposite the side from which the split plate portions 43 extend.
Specifically, an engaging recess 45 is formed at the portion of the ring-like portion 42 which extends between one longitudinal end of the pair of the divided plate portions 43 in an arcuate shape in correspondence with this portion. Also, the engaging recess 45 is formed at the portion of the ring-like portion 42 which extends between the other longitudinal end of the pair of divided plate portions 43 in an arcuate shape in correspondence with this portion. The picture of these engagement recesses 45 can be seen in detail in FIG. 9, which shows the second embodiment.
Furthermore, as shown in FIG. 5, the retaining ring 41 has an escape recess 46 which extends from the outer circumference of the ring-like section 42 to a partial plate section 43. The protrusion 44 extends on the side opposite to the ring-like portion 42 with respect to the split plate portions 43.
The clockwork 51 has a main section 52 and a display panel, for example a dial 53. Furthermore, in a first embodiment, the clockwork 51 also has hands 54 which indicate the time as an hour hand and a minute hand.
The main section 52 is an operation unit; in the wrist watch 11, the hands 54 are moved by, for example, the main section 52 to indicate the time. The main section 52 is of the type which uses a small battery or tension spring as the power source; or of the automatic type; or of the type which uses digital display by a quartz oscillating module on the dial 53 (particularly one for a digital clock display), or of the type which uses both the digital clock arrangement and a different shape. Here, the clockwork 51 has, for example, pointers 54
As shown in Fig. 5, the main portion 52 has side surfaces 52a (only one of which is shown) parallel to each other and a pair of curved projections 52b. The curved protrusions 52b are provided over the pair of side surfaces 52a. The portion of the main portion 52 except for these curved projections 52b is formed in substantially the same shape as the non-round inner circumference of the retaining ring 41 so that it can be engaged with the inner circumference. Accordingly, the retaining ring 41 and the main portion 52, which are in engagement with each other, are brought into position in such a way that they do not move in their circumferential direction. The thickness of the curved projections 52b is greater than the ring-like portion 42 of the retaining ring 41, and these curved projections 52b are formed in such a way that they are suitable for engagement with the engagement recess 45 of the retaining ring 41 when the retaining ring 41 and the main portion 52 are in contact with each other Engagement stand.
The main portion 52 has an indicator mounting shaft 55 extending from the central portion thereof to the exterior of the main portion 52. The pointers 54 are attached to the indicator mounting shaft 55, the rotation of which is controlled by the main section 52. Of the hour hand, the minute hand, and the second hand, at least the hour hand and the minute hand are used as the hands 54.
The dial 53, which displays information, in particular time information, is round and its diameter is larger than that of the main section 52; more particularly, it has a size that brings the peripheral portion of the dial 53 into contact with the plate receiving surface 23b formed on the edge member 21. The indicator mounting shaft 55 is passed through a central hole formed in the center of the dial 53 and in this position the dial 53 is connected to the main portion 52, covering the main portion 52 on the front of the housing 12.
The surface of the dial 53 is provided with information display; in Figures 1, 3 and 4, such a display is omitted. The display of the dial 53 is not limited to a scale for displaying the time; it can also include a plurality of display regions which differ from one another by different colors. Alternatively, the display can each also include symbols which are drawn in a plurality of the flat display regions (e.g. a sun symbol which shows the time of day, a moon symbol to display the sunset, etc.). Furthermore, the display, not for a time function, can include a direction display which enables a simple direction measurement.
Next, a retracting mechanism 61 for attaching the rim member 13 to the central part 13 will be described. The pull-in mechanism 61 is equipped with a pull-in element 62 and a screw unit in order to pull in a screw 69, for example. In the first embodiment, the retraction mechanism 61 is arranged in the housing 12.
The drawing mechanism 62 is formed so that it is provided with at least a plate portion 63 and an engaging portion 66.
In detail, as shown in FIG. 2, the plate section 63 is a section which is formed within the inner space enclosed by the central part 13 in such a way that it faces the rear side of the dial 53. And, as shown in Figs. 4 and 5, the plate portion 63 has a partially cut-out annular shape which includes escape recesses 64 between both ends thereof and has a plurality of screw holes 65 which are provided in the same number and in the same distribution such as the through openings 15 described above. As shown in FIG. 2, the screw holes 65 are located on the inside of the outer circumference of the dial 53.
As shown in Figures 2 and 4, the engagement sections 66 have engagement section bases 66a, which are provided in the same number as the receiving sections 24 and the recesses 28 of the edge element 21 and between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53 and hook portions 66b which hook into the receiving portions 24 from the front of the housing 12 are provided.
The engaging portion bases 66a have the same distribution as the receiving portions 24 and are arranged at intervals along the outer periphery of the plate portion 63 extending from the outer periphery of the plate portion 63 so as to be bent against the front of the housing 12.
The hook portions 66b are provided so as to protrude slightly toward the central side of the plate portion 63, preferably from the distal end portions of the engagement portion bases 66a.
As a result, the thickness of the distal end regions which comprise the hook sections 66b is somewhat greater than the thickness of the engagement section bases 66a with the exception of the distal end regions. The maximum thickness of the engaging portions 66 is determined by the distal end regions which the hook portions 66b include. In the event that the engaging portions 66 are not a factor to increase the diameter of the housing 12, the thickness is set smaller than the width of the gap between the inner peripheral surface 13c of the central part 13, which is located on the front side of the housing 12 with reference to FIG the middle part bottom section 14 is located and the outer circumference of the dial 53. In detail, the thickness of the distal end regions of the engagement section bases 66a, which comprise the hook sections 66a, is preferably approximately 0.5 mm; and the protrusion width of the hook portions 66b with respect to the engagement portion bases 66a is preferably about 0.1 mm.
The width of the hook portions 66b is essentially the same as the width of the recesses 28 of the cylindrical portion 23 and the width of the engagement recesses 24a of the receiving portions 24. The hook portions 66b can pass the recesses 28 in the direction of the thickness of the housing 12, and can be engaged and disengaged from the engagement recesses 24a from the front of the housing 12.
Within the central part 13 screws 69 are each inserted into the through openings 15 from the rear towards the front of the housing 12 and are each in screw engagement with the screw holes 65 opposite the through openings 15 in the retraction element 62. These screws 69 can be of the Rear side of the housing 12 can be removed at the stage in which the housing rear wall 31 is removed
In Figures 1 to 5, the number 71 indicates a crown. Furthermore, in FIG. 5, the number 72 indicates a winding shaft which extends through the winding shaft opening 20. The winding shaft 72 protrudes from the central part 13 and passes between an escape recess 46 and an opposing escape recess 64 before it reaches the main section 52 of the clockwork 51. The winding shaft 72 is operated in conjunction with the crown 71, with the main section 52 of the clockwork 51 being actuated by means of the winding shaft 72 when the crown 71 is operated manually.
The method steps for assembling the wrist watch 11 according to the first embodiment will be described below.
In this composition, the edge member 21 in which the transparent member 26 is already attached to the edge portion 22 by adhesive bonding and in which the waterproof seal 25 is fitted into the sealing groove 22a of the edge portion 22 is the clockwork 51 which is thus assembled is that it includes the dial 53 and the hands 54 and previously prepared the retraction member 62 of the retraction mechanism 61, and then a composition A is formed which includes them as components (see FIG. 3).
To assemble the composition A, first the rim member 21 supporting the transparent member 26 is placed in a position in which the transparent member 26 is on the lower side, and the clockwork 51, which is upside down, is therewith from inserted above to reach a stage in which the peripheral portion of the dial 53 of the movement 51 is in contact with the plate receiving surface 23b of the cylindrical portion 23 of the rim member 21. As a result, the dial 53 of the movement 51 is parallel to the transparent member 26 is arranged such that it faces the transparent element 26.
Thereafter, the pull-in member 62 which is held upside down so that the engaging portions 66 face downward can be placed on the dial 53 from above the timepiece 51 which is upside down. At the same time, the hook sections 66b of the engagement sections 66 have each passed the recesses 28 which are formed in the outer circumferential surface of the cylindrical section 23. As a result, a stage is reached in which the peripheral surface of the dial 53 and the engagement section bases 66a of the engagement sections 66 face each other and in which the pull-in element 62 covers the dial 53 with the screw hole 65, which is in the plate section 63 on the inside the outer circumference of the dial 53 is arranged.
Further, at this stage, the pull-in member 62 is rotated in the circumferential direction thereof. It follows that the hook portions 66b are displaced in the circumferential direction of the cylindrical portion 23 from the recess 28 and the composition A is assembled in a position in which the hook portions 66b can be hooked into and engage with the engagement recesses 24a of the receiving portions 24 of the Edge element 21. Composition A assembled in this way is shown upside down in FIG.
Subsequently, the middle part 13 is connected to the composition A, which has been assembled by the preceding method steps and is held upside down.
Thus, the middle part 13, which is held upside down in such a way that the edge receiving surface 13a can face downward, is placed on the section which is not the edge section 22 of the edge element 21 and thereby carries the transparent element 26. It follows that the above-mentioned portion is relatively inserted into the central part 13, and the edge receiving surface 13 a is brought into contact with the waterproof seal 25 attached to the edge portion 22. At this time, the position of the middle part 13 with respect to the composition A is aligned so that the through holes 15 of the middle part bottom section 14 face the screw holes 65 of the plate section 63, which faces the middle part bottom section 14.
At this stage in which the central part 13, which is held upside down, is connected to the composition A, the plate portion 63 of the retracting member 62 is disposed below the central part bottom portion 14 of the central part 13 and above the dial 53 and the engaging bases 66a of FIG Engagement portions 66 have passed the gap between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53. Further, by the upper combination, the main portion 52 of the timepiece 51 has passed the central opening portion of the plate portion 63 of the retraction member 62. At this stage, an annular defined gap is formed between the main portion 52 and the inner periphery of the plate portion 63.
Subsequently, the retracting mechanism 61 is formed. Thus, the screws 69 each pass through the through openings 15 of the central part bottom section 14 from above the central part 13, which is held upside down, and these screws 69 are screwed into the screw holes 65 and fastened. It follows that the retraction member 62 is pulled up and since its hook portions 66b are engaged with and hooked into the receiving portions 24a from the front of the housing 12, the edge portion 22 of the edge member 21 is retracted so as to be brought into contact with the edge receiving surface 13a of the middle part 13.
Thus, the waterproof gasket 25 is compressed and held between the edge portion 22 and the edge receiving surface 13a, and the edge member 21 is fixed to the center part 13, while maintaining the state in which the hook portions 66b in the engaging recesses 24a of the receiving portions 24 is maintained are hooked. At this stage, the central part 13 is turned over so that the hook portions 66b are engaged with and hooked into the engaging recesses 24a from below.
Thereafter, the retaining ring 41 is inserted from above into the central part 13, which is held upside down, and the retaining ring 41 is brought into engagement with the outer circumference of the main portion 52 of the clockwork 51. It is also possible for the retaining ring 41 to be inserted into the central part 13 before the screws 69 are fastened
By inserting the retaining ring 41, the outer circumference of the retaining ring 41 is brought into engagement with the inner circumference of the middle part bottom section 14 and the position of the clockwork 51 is determined in the radial direction with respect to the middle part 13. At the same time, the inserted retaining ring 41 is brought into a suitable position so that it does not move in the circumferential direction with respect to the clockwork 51, and the engagement recess 45 of the retaining ring 41 and the curved projection 52b of the main portion 52 are in one position in engagement with each other which they are trapped in the direction of the thickness of the central part 13. Furthermore, with the above-mentioned positioning, the evasive recess 46 of the retaining ring 41 is paired with the evasive recess 64 of the plate portion 63 in order to form the passage for the elevator shaft 72.
The winding shaft 72 is then inserted into the winding shaft through opening 20 of the central part 13 and the winding shaft 72 and the clockwork 51 are connected to one another and at the same time the crown 71 is connected to the winding shaft 72 from outside the central part 13.
Finally, at the stage in which the waterproof seal 18 is fitted into the sealing groove 17 of the central part 13, the fixing wall 32 of the housing rear wall 31 is pressed into the central part 13 which is held upside down. Then, at the peripheral portion of the case rear wall 31, the waterproof gasket 18 is compressed and deformed, and at the same time, the peripheral portion of the case rear wall 31 is brought into contact with the lid receiving surface 13b of the central part 13; Furthermore, the engagement projection 33 of the housing rear wall 31 is in engagement with the locking recess 16 of the central part bottom section 14 in a hooked state, the housing rear wall 31 being fastened to the central part 13. Thus, the case 12 is assembled and the assembly of the wrist watch 11 is complete.
At the stage where the composition is complete, the peripheral portion of the case rear wall 31 is kept in contact with the lid receiving surface 13b of the central part 13, and the waterproof seal 18 is compressed and held between the case rear wall 31 and the central part bottom portion 14. Further, when the case back wall 31 is attached, a protrusion 44 of the retainer ring 41 is brought into contact with the inner surface of the case back wall 31 so that the timepiece 51 is pressed against the transparent member 26 by the hook portion of the retainer ring 41 and the bent protrusion 52b. As a result, the peripheral portion of the dial 53 of the timepiece 51 is pressed against the plate receiving surface 23b of the cylindrical portion 23, and the dial 53 is retained by the cylindrical portion 23 of the rim member 21 while being carried by the front of the case 12. At this stage, the central part 13 is turned over so that the dial 53 is supported from below by the cylindrical portion 23. At this stage, the contact of the projection 44 of the retaining ring 41 with respect to the case rear wall 31 is maintained so as to bring the movement 51 into position so that it cannot move in the direction of the thickness of the central part 13.
Through the above-mentioned method steps, the retraction mechanism 61, which attaches the edge element 21 to the central part 13, and the receiving section 24 of the edge element 21 are arranged on the rear side of the housing 12 with respect to the edge section 22 of the edge element 21. At the same time, the engagement section bases 66a of the engagement sections 66, which comprise the retraction element 62, are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53. Accordingly, a position is formed on the front of the housing 12 with respect to the dial 53, in which the hook portions 66b of the engagement portions 66 are hooked into the receiving portions 24 from the front of the housing 12, which in the outer circumference of the cylindrical portion 23 of the edge element 21 are provided. It follows that it is possible to mount the edge element 21 on the central part 13 by fastening the screws 69 as described above.
In the wrist watch 11, which is assembled according to the above-mentioned method steps, the plate portion 63 of the retraction member 62, which includes the retraction mechanism 61, is arranged so that it faces the back of the dial 53 and the screws 69, which the retraction mechanism 61 are arranged on the inside of the outer circumference of the dial 53. In this way, the screws 69 are not arranged on the outside of the outer circumference of the dial 53, so that it is not necessary to provide the edge section 22 of the edge element 21 with screw holes for receiving the screws 69. Accordingly, it is possible to reduce the width H of the edge member 21 that supports the transparent member 26.
In this way, it is possible to reduce the width H of the edge element 21, so that in the event that the diameter size of the case 12 is predetermined, it is possible to increase the display diameter D of the dial 53. Conversely, in the case in which the display diameter D of the dial 53 is specified, it is possible to reduce the diameter size of the case 12 (the size can be roughly calculated by the formula: D + 2H).
In the first embodiment, the engagement section bases 66a of the engagement sections 66, which are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53, are very small in their thickness and are in the region of a diameter F of the engagement surface 21a of Edge element 21 is provided with respect to the central part 13, and in particular in the area of a size E from the sealing groove 22a of the edge element 21 to the inner peripheral surface 23a of the cylindrical portion 23. Accordingly, the thickness of the engagement portion bases 66a is negligible as a factor which the diameter size of the housing 12 enlarged.
According to the first embodiment, the inner circumferential surface 23a of the cylindrical section 23, which comprises the edge element 21, merges continuously into the circumferential section of the dial 53 at right angles. Hence, assuming that the opening diameter of the front of the case of the cylindrical portion 23 is the same, it is possible to ensure a larger display diameter D of the dial 53 compared with the arrangement in which the inner peripheral surface 23a of the cylindrical portion 23 gradually turns toward the rear of the housing 12 decreases in diameter extending.
In the wrist watch 11, which is assembled according to the above-mentioned method steps, the hook portions 66b are hooked into the receiving portions 24 while they are in engagement with the engagement recesses 24a of the receiving portions 24. Accordingly, with reference to the retraction element 62, which is held on the central part 13 by the screws 69, the edge member 21 is held in a position in which it is located at a suitable position, and the edge member 21 does not disadvantageously move in its circumferential direction.
Accordingly, the hooking between the receiving portions 24 along the direction of the thickness of the case 12 and the hook portions 66b is irreversible, and there is no fear of disassembling the composition A. At the same time, there is a case where an illustration such as a mark , is provided on the edge portion 22 of the edge member 21, there is no fear that the display is shifted from the appropriate position with respect to the position of the dial 53.
Further, in the wrist watch 11 according to the first embodiment, the screws 69 are used as the screw unit, so that it is possible to use inexpensive general-purpose screws as the screw unit. Further, in the wrist watch 11 of the first embodiment, all of the screws 69 are disposed within the inner space enclosed by the central part 13, and these screws 69 are hidden by the case rear wall 31 mounted on the central part 13 so that the rear side of the case has a satisfactory appearance Has. At the same time, it is not necessary to drill holes in the rear wall 31 of the housing 12 in order to insert the screws 69 and thus advantageously no water penetration path arises through the rear wall 31 of the housing.
The dismantling of the wristwatch 11 can take place with process steps opposite to the above-mentioned process steps for assembling. In order to describe this in detail, with the housing rear wall 31 arranged in a position in which it faces upwards, the housing rear wall 31 is first removed before the retaining ring 41 is removed. In this case, a tool (not shown) is hooked into a hole 43 a (see FIG. 5) of the partial plate portion 43 of the retaining ring 41 to pull off the retaining ring 41. The screws 69 are then loosened in each case and the middle part 13 is then removed with reference to the composition A. The removed composition A is dismantled if necessary. In this disassembled state, the waterproof seal 18 or the waterproof seal 25 can be replaced if necessary
In the assembly of the wrist watch 11, as described above, with the process of assembling the retracting mechanism 61, with the process of screwing the screws 69 into the retracting member 62, the rim member 21 is drawn into and fixed to the center portion 13. At dismantling the wristwatch 11 with the process of dismantling the retraction mechanism 61, with the process of loosening the screws 69 from the retraction element 62, it is possible to separate the edge element 21 from the central part 13.
Accordingly, even if the assembly or disassembly of the wrist watch 11 is performed for maintenance purposes, for example, to replace the waterproof seal 25, no tension is applied to the edge portion 22 of the edge member 21. Thus, even if the wrist watch 11 is repeatedly assembled and disassembled, there is no fear that the edge member 21 and the transparent member 26 will be separated from each other. At the same time, when assembling and disassembling the wrist watch 11, there is no need to insert a tool between the central part 13 and the edge section 22 of the edge element 21 in order to pry open the edge element 21. Accordingly, there is no fear of damaging the edge portion 22 and the central portion 13 even if the wrist watch 11 is repeatedly assembled and disassembled. Furthermore, even when the wrist watch 11 is repeatedly assembled and disassembled, there is generally no such wear as to impair the function with which the rim member 21 is attached to the central part 13, so that the reassembly after disassembly is highly reliable.
Figures 6 to 9 show the second embodiment of the present invention. The wristwatch according to the second embodiment has the same arrangement as in the first embodiment with the exception of the features described below. Accordingly, the components that are the same or comparable in construction or function to those in the first embodiment are denoted by the same reference numerals and a description is omitted. The second embodiment differs from the first embodiment in the cylindrical portion 23, the receiving portions 24, the engaging portions 66, etc.
As shown in FIGS. 6 to 9, in the second embodiment the outer circumferential surface of the cylindrical section 23 is formed by an engagement surface 21 a of the edge element 21. The receiving portions 24 are provided at intervals in the circumferential direction of the cylindrical portion 23 in a plurality. The receiving sections 24 do not extend from the cylindrical section 23 in the direction of the outer circumference of the cylindrical section 23, but in the direction of the rear side of the housing 12 and have receiving section bases 24b and locking regions 24c.
As shown in FIGS. 6 and 7, the receiving section bases 24b are sections which are arranged between the inner circumferential surface 13c of the central part 13 and the dial 53 and whose outer sides are aligned with the engagement surface 21a. The lock portions 24c are portions formed to extend inward at the distal end portions of the receiving portion bases 24b so as to be bent inward. In the second embodiment, the receiving sections 24 of the edge element 21 are not provided with an arrangement which corresponds to the locking recesses which are described in connection with the first embodiment.
The thickness of the distal end regions of the receiving sections 24, which comprise the locking regions 24c, is somewhat greater than the thickness of the receiving section bases 24b. The maximum thickness of the receiving sections 24, which comprise the locking regions 24c, is determined by the distal end regions. So that the receiving sections 24 are not a factor that increases the diameter of the housing 12, this thickness is smaller than the width of the gap between the inner peripheral surface 13c of the central part 13, which is located on the front side of the housing 12 with respect to the central part bottom section 14 and the outer circumference of the dial 53. In particular, it is preferred that the thickness of the distal end areas of the receiving section bases 24b, which comprise the locking areas 24c, should be approximately 0.6 mm, that the thickness of the receiving section bases 24b should be 0.5 mm and the projection width of the locking areas 24c should be 0.1 mm with respect to the receiving section bases 24b.
As shown in Figures 6 and 9, at the base of the middle part bottom section 14 and in the same number as the receiving sections 24, escape recesses 14a are provided somewhat larger than the distal end areas of the receiving sections 24 and which serve to attach the distal end areas thereto prevent coming into contact with the middle part bottom portion 14.
As shown in Fig. 8, the engaging portions 66 are provided on the peripheral portion of the plate portion 63 including the pull-in member 62 at intervals and in the same number as the receiving portions 24. These engaging portions 66 are flush with the plate portion 63, and recesses 28 are formed on the peripheral portion of the plate portion 63, which include the distances between the engaging portions 66 adjacent in the circumferential direction. Accordingly, in the second embodiment, the edge element 21 is not equipped with an arrangement which corresponds to the recesses 28. The number of the recesses 28 is the same as the number of the receiving portions 24 and the engaging portions 66. With reference to these recesses 28, the locking regions 24c of the receiving portions 24 can pass in the direction of the thickness of the housing 12.
Apart from the arrangement described above, this embodiment is of the same construction as the first embodiment, including the construction not shown in FIGS.
The method steps for assembling the wrist watch 11 according to the second embodiment will be described below.
In this composition, the edge member 21, to which the transparent member 26 is already attached to the edge portion 22 by adhesive bonding, and in which the waterproof seal 25 is fitted into the sealing groove 22a of the edge portion 22, the clockwork 51, which is so is assembled so that the dial 53 and the hands 54 are assembled, and the retraction member 62 of the retraction mechanism 61 is previously prepared, and an assembly A comprising these components is formed (see FIG. 7).
To compose the composition A, first the rim member 21 supporting the transparent member 26 is placed in a position where the transparent member 26 is on the lower side, and the clockwork 51 which is turned upside down is put connected to it from above to reach a stage where the peripheral portion of the dial 53 is in contact with the plate receiving surface 23b of the cylindrical portion 23 of the rim member 21. It follows that the dial 53 of the movement 51 is parallel to the transparent member 26 is arranged such that it lies opposite the transparent element 26. In this position, the receiving portions 24 of the rim member 21 are directed upwards (i.e. towards the rear of the housing 12); the receiving portion bases 24b of the receiving portions 24 are opposite to the peripheral surface of the dial 53, and the locking portions 24c of the receiving portions 24 are arranged on the upper side of the dial 53.
Thereafter, the retraction member 62 is placed on the dial 53 from above the clockwork 51 which is turned upside down. At this point in time, the locking regions 24c, which are formed on the receiving portions 24, have each passed the recesses 28, which are formed on the peripheral portion of the pull-in member 62. As a result, a level is reached in which the retraction element 62 covers the dial 53, with screw holes 65 which are provided in the plate section 63 on the inside of the outer circumference of the dial 53.
Furthermore, in this state, the pull-in member 62 is rotated in its circumferential direction. It follows that the engaging portions 66 are shifted with respect to the locking portions 24c in the circumferential direction of the cylindrical portion 23, and the composition A is in a state where the engaging portions 66 and the locking portions 24c can be hooked with each other. Fig. 7 shows Composition A thus assembled upside down.
The middle part 13 is then combined with the composition A, which is assembled and held upside down according to the method steps described above.
Thus, the central part 13 is set on the portions other than the edge portion 22 of the edge member 21, and the transparent member 26 is supported so that the edge receiving surface 13a faces downward. As a result, the above-mentioned portions are relatively inserted into the central part 13 and the edge receiving surface 13 a is brought into contact with the waterproof seal 25 which is attached to the edge member 21. At this time, the central part 13 is aligned with respect to the composition A in such a way that the through holes 15 of the central part bottom section 14 face the screw holes 65 of the plate section 63 which faces the central part bottom section 14.
In this way, the central part 13 which is held upside down is combined with the composition A which is kept upside down, and in this state, the receiving portion bases 24b of the receiving portions 24 are between the inner peripheral surface 13c of the central part 13 and the outer periphery of the dial 53 arranged. Accordingly, on the rear side of the case 12 with respect to the dial 53, a state is reached in which the locking portions 24c of the receiving portions 24 are hooked from the rear side of the case into the engagement portions 66 formed on the peripheral portion of the plate portion 63 which is from the retraction element 62 is included. Further, in the above combination, the main portion 52 of the timepiece 51 has passed the central hole portion of the plate portion 63 of the pull-in member 62. In this state, an annular defined gap is formed between the main portion 52 and the inner periphery of the plate portion 63.
Then, the retracting mechanism 61 is formed. Thus, from above the central part 13, which is held upside down, the screws 69 are each inserted through the through openings 15 of the central part bottom section 14, and these screws 69 are screwed into the screw holes 65 and fastened thereto. As a result, the pull-in element 62 is pulled upwards and its engagement sections 66 are hooked into the locking areas 24c of the receiving sections 24 on the front side of the housing, and the edge section 22 of the edge element 21 is thereby drawn in such that it is in contact with the Edge receiving surface 13a of the central part 13 is brought.
Accordingly, the waterproof seal 25 is compressed and held between the edge portion 22 and the edge receiving surface 13a and the edge member 21 is attached to the central part 13 and at the same time a state is achieved in which the engaging portions 66 are hooked into the locking areas 24c of the receiving portions 24 are. In this state, the middle part 13 is turned over so that the engagement sections 66 are hooked into the locking regions 24c from below.
Thereafter, the retaining ring 41 is inserted from above into the central part 13, which is held upside down and the retaining ring 41 is in engagement with the outer circumference of the main section 52 of the clockwork 51. The insertion of the retaining ring 41 in the central part 13 can be performed before fastening of the screws 69 are executed.
By inserting the retaining ring 41, the outer circumference of the retaining ring 41 is in engagement with the inner circumference of the central part bottom section 14 and the radial position of the clockwork 51 is fixed with respect to the central part 13. At the same time, the inserted retaining ring 41 is positioned in a suitable position in which it cannot move with respect to the clockwork 51 in its circumferential direction, and the engaging recesses 45 of the retaining ring 41 and the curved projections 52b of the main portion 52 are in engagement with each other Position in which they are trapped in the thickness of the central part 13. Furthermore, with the positioning described above, the escape recesses 46, retaining ring 41 are paired with the escape recesses 64 of the plate section 63 in order to form the passage for the elevator shaft 72.
Subsequently, the winding shaft 72 is passed through the winding shaft through opening 20 of the central part 13 and the winding shaft 72 and the clockwork 51 are connected to one another, and at the same time the crown 71 is connected to the winding shaft 72 on the outside of the central part 13.
Finally, in the state, the waterproof seal 18 is in engagement with the sealing groove 17 of the central part 13, the fastening wall 32 of the rear wall 31 of the housing is inserted into the central part 13, which is held upside down. Then, the waterproof seal 18 is compressed and deformed at the peripheral portion of the case rear wall 31, and at the same time, the peripheral portion of the case rear wall 31 is brought into contact with the lid receiving surface 13b of the central part 13; Furthermore, the engagement projection 33 of the central part 13 is in engagement with and hooked into the locking recess 16 of the central part bottom section 14, the housing rear wall 31 being fastened to the central part 13. As a result, the case 12 is assembled and, at the same time, the assembly of the wristwatch 11 is complete
At this stage, the peripheral portion of the case rear wall 31 is in contact with the lid receiving surface 13b of the central part 13, and the waterproof seal 18 is compressed and held between the case rear wall 31 and the central part bottom portion 14. Further, when the case rear wall 31 is assembled, a projection 44 of the retaining ring 41 in contact with the inner surface of the case back wall 31 so that the timepiece 51 is pressed against the transparent member 26 by the hook portion between the retaining ring 41 and the bent projection 52b. As a result, the peripheral portion of the dial 53 of the timepiece 51 is pressed against the plate receiving surface 23b of the cylindrical portion 23, and the dial 53 is supported on the front of the case 12 by the cylindrical portion 23 of the rim member 21. In this state, the central part 13 is turned over so that the dial 53 is supported from below by the cylindrical section 23. In this state, the contact of the projection 44 of the retaining ring 41 with the case rear wall 31 is maintained so that the clockwork 51 is positioned in such a way that it cannot move in the direction of the thickness of the central part 13.
Through the above-mentioned method steps, the retraction mechanism 61, which attaches the edge element 21 to the central part 13, and the receiving sections 24 of the edge element 21 are arranged on the rear side of the housing 12 with respect to the edge section 22 of the edge element 21. At the same time, the receiving section bases 24b of the receiving sections 24, which comprise the edge element 21, are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53. Thus, a stand is formed on the rear side of the housing 12 with respect to the dial 53, in which the engagement portions 66 of the retraction element 62 on the front side of the housing 12 are hooked into the locking areas 24c of the receiving portions 24, which engage against the rear side of the housing 12 extend from the cylindrical portion 23 of the rim member 21. As a result, it is possible to mount the edge member 21 on the central part 13 by fastening the screws 69 as described above.
In the wristwatch 11, which is assembled according to the above-mentioned method steps, the plate portion 63 of the pull-in element 62, which the pull-in mechanism 61 comprises, is arranged opposite the back of the dial 53, and the screws 69, which the pull-in mechanism 61 comprises, are arranged on the inside of the outer circumference of the dial 53. Because the screws 69 are not arranged on the outside of the outer circumference of the dial 53, it is not necessary to provide the edge section 22 of the edge element 21 with screw holes in order to receive the screws 69. It is thus possible to reduce the width H of the edge member 21 which supports the transparent member 26.
In this way, it is possible to reduce the width H of the edge element 21, so that in the event that the diameter size of the case 12 is predetermined, it is possible to increase the display diameter D of the dial 53. Conversely, in the case where the display diameter D of the dial 53 is specified, it is possible to reduce the diameter size of the case 12 (the size can be roughly calculated by the formula: D + 2H).
In the second embodiment, the receiving section bases 24b of the receiving sections 24, which are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53, are very small in their thickness; Furthermore, they are provided on the inside of the diameter F of the engagement surface 21a of the edge element 21 with respect to the central part 13, in other words, in the area of size E between the sealing groove 22a of the edge element 21 and the inner circumferential surface 23a of the cylindrical portion 23 they are a negligible factor in order to enlarge the diameter size of the housing 12.
According to the second embodiment, the inner circumferential surface 23a of the cylindrical section 23, which comprises the edge element 21, merges continuously into the circumferential section of the dial 53 at a right angle. It follows that, assuming that the opening diameter at the front of the case of the cylindrical portion 23 is the same, it is possible to use a larger display diameter D of the dial 53 than that in the arrangement in which the inner peripheral surface 23a of the cylindrical portion 23 gradually decreases in diameter towards the rear of the housing 12.
In the wrist watch 11, which is assembled according to the second embodiment with the above-mentioned method steps, screws 69 are used as a screw unit, so that it is possible to use inexpensive general-purpose screws as the screw unit. Further, in the wrist watch 11 according to the second embodiment, all of the screws 69 are arranged within the interior space enclosed by the central part 13 and the screws 69 are covered by the housing rear wall 31 which is mounted on the central part 13, so that the rear side of the housing has a satisfactory external appearance shows. At the same time, it is not necessary to drill holes in the rear wall 31 of the housing 12 in order to introduce the screws 69 and thus advantageously no water penetration path is created through the rear wall 31 of the housing.
The disassembly of the wrist watch 11 is carried out by process steps which are opposite to the above-described assembly steps. In order to describe this in detail, the housing rear wall 31 is first removed and the retaining ring 41 is removed in the position in which the housing rear wall 31 is arranged in an upwardly directed position. In this case, a tool (not shown) is hooked into a hole 43a which the partial plate section 43 of the retaining ring 41 comprises (see FIG. 9) and the retaining ring 41 is pulled off. Then the screws 69 are loosened in each case and then the middle part 13 with respect to the composition A is removed. The separated composition A is dismantled if necessary. And in this disassembled state, it is possible that the waterproof seal 18 or the waterproof seal 25 is replaced if necessary.
In the constitution of the wrist watch 11 as described above, with the process of assembling the pull-in mechanism 61, i.e., with the process of fastening the screws 69 in the pull-in member 62, the rim member 21 is pulled in and fixed to the center portion 13. When the wrist watch 11 is dismantled, the process of dismantling the pull-in mechanism 61, i.e., the process of loosening the screws 69 from the pull-in member 62 achieves a state in which it is possible to separate the edge member 21 from the central part 13.
Thus, in maintenance work such as replacing the waterproof seal 25, no voltage is applied to the edge portion 22 of the edge member 21 even when assembling and disassembling the wrist watch 11 are performed. Thus, even if the wrist watch 11 is repeatedly assembled and disassembled, there is no fear that the edge member 21 and the transparent member 26 will be separated from each other. At the same time, when assembling and disassembling the wristwatch 11, there is no fear that a tool will be inserted between the central part 13 and the edge section 22 of the edge element 21 in order to pry open the edge element 21. Accordingly, even if the wrist watch 11 is repeatedly assembled and disassembled, there is no fear that the edge portion 22 and the central portion 13 will be damaged. Furthermore, even with the repeated assembling and disassembling of the wrist watch 11, there is generally no such wear as to impair the function with which the rim member 21 is attached to the central part 13, so that the reassembly after disassembly is highly reliable.
Figures 10 to 13 show a third embodiment of the present invention. Except as described below, the wrist watch according to the third embodiment is of the same arrangement as in the first embodiment. Accordingly, the components that are the same or comparable in construction or function to those in the first embodiment are denoted by the same reference numerals and a description is omitted. The third embodiment differs from the first embodiment in the middle part bottom section, the pull-in mechanism, etc.
Thus, as shown in FIGS. 10 to 13, in the third embodiment the central part bottom section 14 has an engaging hole 14b which extends through it in the thickness direction and which forms the inner circumferential surface of the central part bottom section 14. In order to prevent the pull-in element 62 from rotating in its circumferential direction, the engagement hole 14b is formed as a non-round, e.g., rectangular, hole, in particular a substantially hexagonal hole, with all angles being beveled. In the third embodiment, the central part bottom section 14 is not provided with through holes and locking areas, which are described in connection with the first embodiment. Furthermore, the lid receiving surface 13b of the third embodiment is not formed by the end surface on the rear side of the housing in the direction of the thickness of the central part 13, but by the rear side of the central part bottom section 14, which provides a step with respect to this end surface.
As shown in FIGS. 12, 13, etc., the pull-in member 62 with which the pull-in mechanism 61 is equipped has an annular pipe portion 68 integrally extending from the inner peripheral portion of the plate portion 63 toward the rear of the housing 12. The annular pipe portion 68 is a portion which engages with the engaging hole 14b so that insertion and removal are possible. The external arrangement of the annular tube portion 68 is related to the arrangement of the engaging hole 14b; in the case of the third embodiment, it is essentially a hexagonal arrangement, the angles of which are all bevelled. A female screw portion 68 a is formed on the inner peripheral surface of the annular pipe portion 68.
In the third embodiment, the screw unit, which includes the pull-in mechanism 61, is provided on the housing rear wall 31. As shown in FIGS. 10 and 13, the screw unit is formed as a male screw section 32 a, which is provided on the outer circumferential surface of the fastening wall 32 which comprises the housing rear wall 31. This male screw portion 32a serves as a means for assembling the housing rear wall 31 to the central part 13 and is in screw engagement with the female screw portion 68a of the annular tube portion 68. Thus, in the third embodiment, the attachment wall 32 is not provided with the engaging projection shown in FIG Connection with the first embodiment is described.
In addition to the arrangement described above, this embodiment is the same as the first embodiment, including the arrangement not shown in FIGS.
The steps for assembling the wristwatch 11 according to the third embodiment will be described below.
In the composition, the edge member 21 to which the transparent member 26 is already attached to the edge portion 22 by adhesive bonding and in which the waterproof gasket 25 is fitted into the sealing groove 22a of the edge portion 22 is the timepiece 51 which is so is assembled to include the dial 53 and the hands 54, and the retraction member 62 of the retraction mechanism 61 is previously prepared, and an assembly A is formed which includes them as components (see FIG. 11).
To assemble the composition A, the rim member 21 that supports the transparent member 26 is first placed in a position in which the transparent member 26 is on the underside, and the clockwork 51, which is turned upside down, is therewith from combined above to achieve a state in which the peripheral portion of the dial 53 is in contact with the plate receiving surface 23b of the cylindrical portion 23 of the rim member 21. It follows that the dial 53 of the clockwork 51 is arranged parallel to the transparent member 26 so that it faces the transparent element 26.
Thereafter, the pull-in member 62 which is held upside down so that the engaging portions 66 face downward is placed on the dial 53 from above the timepiece 51 which is held upside down. At the same time, the hook sections 66b of the engagement sections 66 have each passed the recesses 28 which are formed on the outer circumferential surface of the cylindrical section 23. It follows that a state is reached in which the peripheral surface of the dial 53 and the engagement section bases 66a of the engagement sections 66 are opposite one another and in which the retraction element 62 covers the dial 53 with the annular tube section 68 which extends from the plate section 63, and which is arranged on the inside of the outer periphery of the dial 53.
Further, at this stage, the pull-in member 62 is rotated in its circumferential direction. It follows that the hook portions 66b are displaced in the circumferential direction of the cylindrical portion 23 from the recesses 28, and the composition A is assembled at a stage where the hook portions 66b can hook and engage with the engaging recesses 24a of the receiving portions 24 of the Edge element 21. The thus assembled composition A is shown upside down in FIG.
The middle part 13 is then inserted into the composition A, which is assembled according to the method steps described above and is held upside down.
Thus, the central part 13, which is held upside down so that the edge receiving surface 13a faces downward, is set on the portion other than the edge portion 22 of the edge member 21 while supporting the transparent member 26. It follows that the above-mentioned portion is relatively inserted into the central part 13, and the edge receiving surface 13 a is brought into contact with the waterproof seal 25 mounted on the edge portion 22.
In the state in which the middle part 13 which is held upside down is combined with the composition A which is held upside down, the plate portion 63 of the pull-in member 62 is disposed below the middle part bottom portion 14 of the middle part 13 and above the dial 53 and the engaging bases 66a of the engaging portions 66 have passed the gap between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53. Furthermore, due to the above-described arrangement, the main section 52 of the clockwork 51 has passed the central hole section of the plate section 63 of the retraction member 62. In this state, an annular defined gap is formed between the main portion 52 and the inner periphery of the plate portion 63.
Further, in the state in which the composition A held upside down and the middle part 13 combines as described above, the annular pipe portion 68 of the pull-in member 62 is engaged with the engaging hole 14b of the middle part bottom portion 14. Through this engagement the central part 13 and the retraction member 62 are positioned with respect to each other and are prevented from rotating in their circumferential direction.
Thereafter, the retaining ring 41 is inserted from above into the central part 13, which is held upside down, and the retaining ring 41 is in engagement with the outer periphery of the main section 52 of the clockwork 51 and at the same time it is also in engagement with the inner periphery of the annular pipe section 68 The insertion of the retaining ring 41 into the middle part 13 can also be carried out before the middle part 13 is placed in the composition A.
By inserting the retaining ring 41, the outer circumference of the retaining ring 41 is in engagement with the inner circumference of the middle part bottom section 14 and the position of the clockwork 51 in the radial direction is determined with respect to the middle part 13. At the same time, the inserted retaining ring 41 is set at a suitable position so that it does not move in the circumferential direction with respect to the movement 51, and the engaging recesses 45 of the retaining ring 41 and the bent protrusion 52b of the main portion 52 are engaged in a position shown in FIG which they are trapped in the direction of the thickness of the central part 13. Furthermore, with the positioning described above, the evasive recess 46 of the retaining ring 41 is paired with the evasive recess 64 of the plate portion 63 to form a passage for the elevator shaft.
In this state, the winding shaft 72 has passed the winding shaft through opening 20 of the central part 13 and the winding shaft 72 and the clockwork 51 are connected to one another and at the same time the crown 71 is connected to the winding shaft 72 outside the central part 13.
Subsequently, the retraction mechanism 61 is formed and the housing rear wall 31 is mounted on the central part 13. That is, in this state the waterproof seal 18 is fitted into the sealing groove 17 of the central part 13, which is held upside down, the fastening wall 32 is inserted from above the central part 13 by rotating the housing rear wall 31 into the annular pipe section 68 which the pull-in element 62 comprises . It follows that the male screw section 68 a, which is formed on the outer circumference of the fastening wall 32, is brought into screw engagement with the female screw section 32 a of the annular pipe section 68. The attachment of the rear wall 31 of the housing is possible because the retraction element 62 is prevented from rotating, as described above.
By the process of fixing the case rear wall 31 as described above, the pull-in member 62 is pulled up and its hook portions 66b are caught to be engaged with the receiving portions 24a of the receiving portions 24 on the front side of the housing 12. At the same time, the edge section 22 of the edge element 21 is drawn in so that it is brought into contact with the edge receiving surface 13a of the central part 13.
Accordingly, the waterproof seal 25 already engaged with the edge member 21 is compressed and held between the edge portion 22 and the edge receiving surface 13a; In this state, the edge element 21 is fixed to the middle part 13 and at the same time the position in which the hook sections 66b are hooked into the engagement recesses 24a of the receiving sections 24 is maintained. In this state, the middle part 13 is turned over so that the hook sections 66b are hooked into and engage with the engagement recesses 24a from below.
At the same time, the housing rear wall 31 is drawn into the central part 13, and the waterproof seal 18, which is held between the peripheral portion of the housing rear wall 31 and the lid receiving surface 13b, is compressed and the housing rear wall 31 is mounted on the central part 13. As described above, the housing rear wall 31 is screwed into the retraction member 62 to be fixed to the central part 13, the rim member 21 is mounted on the central part 13, and the housing 12 is assembled.
And, since the case rear wall 31 is fixed to the central part 13, the protrusion 44 of the retaining ring 41 comes into contact with the inner surface of the case rear wall 31 so that a state in which the timepiece 51 is over against the transparent member 26 is achieved the hook portion is pressed between the retaining ring 41 and the bent protrusion 52b. As a result, the peripheral portion of the dial 53 of the timepiece 51 is pressed against the plate receiving surface 23b of the cylindrical portion 23, and the dial 53 is supported by the cylindrical portion 23 of the rim member 21 on the front side of the case 12. In this state, the central part 13 is turned over so that the dial 53 is supported by the cylindrical portion 23 from below. In this state, the contact of the projection 44 of the retaining ring 41 with the case rear wall 31 is maintained, so that the clockwork 51 is set in position so that it cannot move in the direction of the thickness of the central part 13.
In the wristwatch 11 assembled according to the method steps described above, the retracting mechanism 61 which fixes the rim member 21 to the central part 13 and the receiving portions 24 of the rim member 21 are on the rear side of the case 12 with respect to the rim portion 22 of the edge element 21 arranged. And the engaging portion bases 66a of the engaging portions 66, which include the pull-in element 62, are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53. Accordingly, a stand is formed on the front of the housing 12 with respect to the dial 53, in which the hook portions 66b of the engagement portions 66 are hooked into the receiving portions 24 on the front of the housing 12, which are on the outer circumference of the cylindrical portion 23 of the edge element 21 are provided.
In the wristwatch 11, which is assembled according to the method steps described above, the plate portion 63 of the retraction member 62, which includes the retraction mechanism 61, is arranged opposite the back of the dial 53 and at the same time is the annular tube portion 68 which is the female screw portion 68a, and is in screw engagement with the male screw portion 32a, which is the screw unit of the pull-in mechanism 61, arranged on the inside of the outer periphery of the dial 53. In this way, the annular pipe section 68 including the female screw section 68a is not arranged on the outside of the outer periphery of the dial 53, so that it is not necessary to provide a screw hole in the edge section 22 of the edge element 21. It is thus possible to reduce the width H of the edge member 21 which supports the transparent member 26.
In this way, it is possible to reduce the width H of the rim member 21, so that in the case where the diameter size of the case 12 is predetermined, it is possible to enlarge the display diameter D of the dial 53. Conversely, in the case where the display diameter D of the dial 53 is specified, it is possible to reduce the diameter size of the case 12 (a size can be roughly calculated by the formula: D + 2H).
In the third embodiment, the engagement section bases 66a of the engagement sections 66, which are arranged between the inner circumferential surface 13c of the central part 13 and the outer circumference of the dial 53, are very small in their thickness and are in a range of the diameter F of the engagement surface 21a of the Edge element 21 provided with respect to the central part 13; in other words, they are provided in a region of size E between the sealing groove 22a of the edge element 21 and the inner circumferential surface 23a of the cylindrical section 23. Thus, the thickness of the engaging portion bases 66a is negligible as a factor which increases the diameter size of the housing 12.
Furthermore, according to the third embodiment, the inner circumferential surface 23a of the cylindrical section 23, which comprises the edge element 21, merges continuously at a right angle into the circumferential section of the dial 53, so that for the same reason as above in connection with the first embodiment described, it is possible to use a larger display diameter D of the dial 53.
In the wristwatch 11 assembled according to the above-described process steps, the hook portions 66b are hooked in the receiving portions 24, engaged with the engaging recesses 24a of the receiving portions 24. Thus, for the same reason as above in connection with of the first embodiment, no fear of disassembling the composition A. At the same time, in the case where a display such as a mark is provided on the edge portion 22 of the edge member 21, there is no fear that the display will be shifted from the appropriate position in relation to the position of the dial 53.
In the wrist watch 11 according to the third embodiment, the attachment wall 32 of the case back wall 31 is used as the screw unit, and the male screw portion 32a is provided on the outer periphery thereof. Thus, a large number of screws are not used, thereby making it possible to reduce the number of components and the man-hours for assembling. Further, in the wrist watch 11 according to the third embodiment, the male screw portion 32a as the screw unit is hidden by the case rear wall 31 so that the rear side of the case has a satisfactory appearance and it is not necessary to drill holes to insert a screw through the case rear wall 31 ; in addition, no penetration path for water penetrating through the rear wall 31 of the housing is advantageously formed.
The disassembly of the wrist watch 11 is carried out through process steps which are opposite to the above-described assembly steps. Described in detail, in the position in which the housing rear wall 31 is arranged facing upward, the housing rear wall 31 is removed and then the retaining ring 41 is removed. In this case, a tool (not shown) is hooked into a hole 43a (see FIG. 5) which the partial plate section 43 of the retaining ring 41 comprises, and the retaining ring 41 is pulled off. The screws 69 are then loosened in each case and the middle part 13 is then removed with reference to the composition A. The removed composition A is dismantled if necessary. And in the disassembled state, it is possible to replace the waterproof seal 18 or the waterproof seal 25 if necessary
In the constitution of the wrist watch 11 as described above, with the process of assembling the retracting mechanism 61, that is, with the process of screwing the screws 69 into the retracting member 62, the rim member 21 is drawn into and fixed to the center part 13. When dismantling the wristwatch 11 with the process of dismantling the pull-in mechanism 61, that is, with the process of loosening the screws 69 from the pull-in element 62, it is possible to separate the edge element 21 from the central part 13.
Accordingly, in maintenance work such as replacing the waterproof seal 18, even when assembling and disassembling are performed, no stress is applied to the edge portion of the edge member 21. Thus, even if the assembling and disassembling of the wrist watch 11 is repeated, there is no fear that the rim member 21 and the transparent member 26 will be separated from each other. At the same time, when assembling and disassembling the wrist watch 11, there is no fear of inserting a tool between the central part 13 and the edge section 22 of the edge element 21 in order to pry open the edge element 21. Thus, even if the wrist watch 11 is repeatedly assembled and disassembled, there is no fear of damaging the edge section 22 and the central part 13. Further, even when the wrist watch 11 is repeatedly assembled and disassembled, there is no wear to impair the function with which the rim member 21 is attached to the center part 13, so that reassembly after disassembly is highly reliable.
Fig. 14 shows a fourth embodiment of the present invention. The wristwatch according to the fourth embodiment has the same arrangement as that of the first embodiment with the exception described below. Accordingly, the components that are the same or comparable or have the same function as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment and a description is omitted. The fourth embodiment differs from the first embodiment in the receiving portions and the hook portions.
Thus, on the outer circumference of the cylindrical section 23, which comprises the edge element 21, a plurality of receiving sections 24 are formed in the direction of the thickness of the housing 12. In the third embodiment in particular, the receiving sections 24 are shaped as male screw sections which are provided on the outer circumference of the cylindrical section 23. As the receiving sections 24, recesses and projections can be formed parallel to one another on the outer circumference of the cylindrical section 23. In this case, in the circumferential direction of the cylindrical portion 23, a plurality of recesses and projections are provided as receiving portions 24 in a plurality of areas which extend in the circumferential direction of the cylindrical portion 23 (These recesses correspond to the recesses 28 which are in connection with the first embodiment are described).
Also, the hook portions 66b including the pull-in member 62 are formed in a plurality in the direction of the thickness of the housing 12. Specifically, in the fourth embodiment, the hook portions 66b are formed by female screw portions formed on the inner periphery of the distal end portions of the engagement portion bases 66a. As the hook portions 66b, recesses and protrusions may be formed in parallel with each other on the inner periphery of the distal end portions of the engagement portion bases 66a. In this case, the engaging portion bases 66a are formed in the same number as the recesses, and at the same time, the hook portions 66b are formed so as to be able to pass through these recesses in the direction of the thickness of the housing 12.
And the receiving portions 24 provided on the outer periphery of the cylindrical portion 23 and the hook portions 66b provided on the pull-in member 62 are respectively screw-engaged and hooked with each other in the direction of the thickness of the housing 12 as shown in FIG 14 shown.
Except for the above, the embodiment has the same arrangement as that of the first embodiment including the arrangement not shown in FIG.
In the wrist watch 11 according to the fourth embodiment, it is possible to provide a wrist watch 11 in which the width H of the rim member 21 supporting the transparent member 26 is small for the same reason as in connection with the first Embodiment is described and at the same time it is possible to obtain all the effects of the embodiment which are described in connection with the first embodiment. In addition, in the wristwatch 11 according to the fourth embodiment, the receiving portions 24 and the hook portions 66b are hooked with each other at a plurality of positions in the direction of the thickness of the case 12, although the protrusion width of the receiving portions 24 and the hook portions 66b is small, it is possible to increase the reliability of the entanglement. Accordingly, it is possible to perform the attachment of the rim member 21 to the center part 13 by the pull-in mechanism 61 with higher reliability.
Fig. 15 shows a fifth embodiment of the present invention. The wrist watch according to the fifth embodiment is of the same arrangement as that of the first embodiment with the exception described below. Accordingly, the components that are the same or comparable or have the same function as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment and a description is omitted. The fifth embodiment differs from the first embodiment in the middle part 13, the screws 69, which function as a screw unit, etc.
That is, in the fifth embodiment, the central part 13 integrally has the case rear wall portion 31a. Thus, the sealing groove 17, as described in connection with the first embodiment, is not necessary. Furthermore, a plurality of through-openings 15 (only one of which is shown), which are formed on the central part bottom section 14 which the central part 13 comprises, are formed in such a way that these have support recesses 15a which are open in the direction of the rear side of the central part 13.
A waterproof gasket 18 is attached in an engaging state to the outer periphery of the respective incomplete screw portions of the screws 69 (only one of which is shown) which are provided in the same number as the through holes 15. The waterproof seal 18 corresponds to the waterproof seal which is fixed in the sealing groove 17, which is described in connection with the first embodiment. Each screw 69 is long enough to reach a screw hole 65 of the pull-in element 62, starting from the support recess 15a in the direction of the thickness of the housing 12.
And the screws 69 to which the waterproof seal 18 is attached are inserted into the through holes 15 from the outside of the central part 13 and screwed into the screw holes 65 of the pull-in member 62. It follows that the composition A is drawn into the central part 13 and the edge element 21 is attached to the central part 13. In the state in which the assembly of the wristwatch 11 is complete, the head portions 69a of the screws 69 are in contact with the bottom surfaces of the support recesses 15a and the head portions 69a are visible on the rear side of the central part 13, ie on the rear side of the housing 12. At the same time, the waterproof seal 18 undergoes elastic deformation in a compressed position and is held in close contact with the wall surface which defines the through openings 15 in order to secure the sealing property against water penetrating into the housing 12.
Except for the above, the embodiment has the same arrangement as the first embodiment including the arrangement not shown in FIG.
In the wrist watch 11 according to the fifth embodiment, it is possible to provide a wrist watch 11 in which the width H of the edge member 21 supporting the transparent member 26 is small for the same reason as that related to the first Embodiment is described and at the same time it is possible to achieve all the effects that are described in connection with the first embodiment, with the exception of the effect based on the fact that the screw unit is included in the housing 12. In addition, in the wrist watch 11 according to the fifth embodiment, the head portions 69a of the screws 69 are visible on the outside of the housing 12, so that it is possible to visually check whether or not the head portions 69a of the screws 69 are in a predetermined position on the Rear of the housing 12 are located. It follows that a simple check ensures, in an inspection process or the like, that the screws 69 are fastened without failure.
The present invention is not limited to a wrist watch as described in connection with the first to fifth embodiments, but is also applicable to watches that are not attached to a human arm, such as a table clock or a wall clock. Further, the present invention is applicable to an arm wearable device used on a human arm such as a smart watch, and by this application, the width of the edge member with which the smart watch is provided can be reduced. Here, smart watch means, for example, a portable electronic device which is equipped with a clock function, the clockwork of which is formed by an electronic circuit, it being possible for information such as the time and characters to be displayed on a dial through the function of the clockwork become.
Further, it is possible that the arrangement of the retracting mechanism 61 as described in the third embodiment is applied to the second and fourth embodiments in order to realize these embodiments. Furthermore, it is possible that the arrangement of the retraction mechanism 61 as described in connection with the fifth embodiment is used in the first, second and fourth embodiments in order to realize these embodiments.

权利要求:
Claims (12)
[1]
1. Clock, which has a housing (12) in which a clockwork (51) is received, the housing (12) comprising a display panel (53) opposite a transparent element (26), and an edge element (21), and a central part (13), the edge element (21) being fastened to the central part (13) by means of a retraction mechanism (61),wherein the edge element (21) has an edge section (22) which is arranged outside an interior space enclosed by the central part (13) and which supports the transparent element (26), as well as a cylindrical section (23) which is located inside the central part (13) enclosed interior is in contact with a peripheral portion of the display panel (53) and supports the display panel (53) toward the front of the housing (12) to specify the display diameter (D) of the display panel (53) and a receiving portion (24 ), which extends from the outer circumference of the cylindrical section (23) or from the cylindrical section (23) in the direction of the rear side of the housing (12); andwherein the retraction mechanism (61) has a plate section (63) which is arranged within the interior space enclosed by the central part (13) so that it faces the rear side of the display panel (53), as well as a retraction element (62) which is attached to the Peripheral portion of this plate portion (63) is formed, and an engaging portion (66) which is formed to hook on the receiving portion (24) from the front of the housing (12), and a screw-in unit (69) which is located on the inside the outer circumference of the display panel (53) and which can be screwed into the plate section (63) from the rear of the housing (12).
[2]
2. Clock according to claim 1, wherein the inner peripheral surface (23a) of the cylindrical portion (23) merges continuously at a right angle into the display panel (53).
[3]
3. Clock according to claims 1 or 2, wherein the engagement portion (66) has an engagement portion base (66a) which extends from the outer periphery of the plate portion (63) toward the front of the housing (12) and between the inner peripheral surface (13c) of the Central part (13) and the outer periphery of the display panel (53) is arranged and a hook portion (66b) which is formed on the engagement portion base (66a) and hooks into the receiving portion (24) which is provided on the outer periphery of the cylindrical portion (23) is.
[4]
The clock according to claim 3, wherein a plurality of receiving portions (24) are provided at intervals in the circumferential direction of the cylindrical portion (23), and the engaging portions (66) are provided at intervals on the outer periphery of the plate portion (63) in the same number as the receiving portions (24) are provided and each of the hook portions (66b) can pass a recess (28) which is formed in the circumferential direction of the cylindrical portion (23) between adjacent receiving portions (24) and the hook portions (66b) in the receiving portions (24) hook when the hook sections (66b) are displaced from the recesses (28) in the circumferential direction.
[5]
The timepiece according to claim 4, wherein the plurality of receiving portions (24) against the front of the case (12) open engagement recesses (24a) with the substantially same width as the hook portions (66b) at positions which in the circumferential direction of the rim member (21) are displaced with respect to the recesses (28) and the hook portions (66b) are hooked into the receiving portions (24) in engagement with the engagement recesses (24a) on the front of the housing (12).
[6]
The clock according to claim 1 or 2, wherein the receiving portion (24) which extends from the cylindrical portion (23) toward the rear of the central part (13) has a receiving portion base (24b) which is sandwiched between the inner peripheral surface of the central part ( 13) and the outer periphery of the display panel (53) and has a locking portion (24c) which is formed on the receiving portion base (24b) and configured to receive the engaging portion (66) which is attached to the peripheral portion of the plate portion (63) the rear of the housing (12) is formed.
[7]
The clock according to claim 6, wherein a plurality of receiving portions (24) are provided at intervals in the circumferential direction of the cylindrical portion (23), and the engaging portions (66) are provided at intervals on the outer periphery of the plate portion (63) in the same number as the receiving portions (24) are provided; and the locking portions (24c) can pass recesses (28) which are adjacent between the engagement portions (66) in the circumferential direction of the plate portion (63) and receive the engagement portions (66) from the rear of the housing (12) when they are in Circumferential direction of the recesses (28) are shifted.
[8]
8. Clock according to one of claims 1 to 7, wherein the screw-in unit is a screw (69) which is in screw engagement with the plate portion (63).
[9]
9. Clock according to claim 8, wherein the entire screw (69) is arranged in the interior space enclosed by the central part (13) and the screw (69) is covered by a housing rear wall (31) of the housing (12) which is attached to the central part (13 ) is attached.
[10]
10. Clock according to one of claims 1 to 7, wherein the housing (12) is equipped with a housing rear wall (31) which is arranged so that it is in contact with the central part (13) at the rear of the housing (12) ;the retraction member (62) further comprises an annular tube portion (68) which extends from the plate portion (63) toward the rear of the housing (12) and has a female screw portion (68a) on the inner peripheral surface thereof, so as to refer to the central part (13) to be arranged non-rotatably; andwherein the pull-in screw unit is formed on the housing rear wall (31) as a male screw section (32a) which is in screw engagement with the female screw section (68a).
[11]
11. Clock according to claim 3, wherein the receiving portion (24) which is provided in the outer circumference of the cylindrical portion (23) and the hook portion (66b) which is provided on the retraction element (62), each in the direction of the thickness of the housing (12) are formed in multiplicity and hooked into one another.
[12]
12. A clock according to claim 8, wherein a head portion of the screw (69) is arranged on the rear of the housing (12).

类似技术:

---

公开号 | 公开日 | 专利标题

---

CH712078B1|2021-05-14|Clock.

---

DE69725984T2|2004-05-06|ADJUSTMENT DEVICE USING A CROWN FOR WATCHES

---

EP0052316A1|1982-05-26|Wrist-watch

---

CH700256B1|2010-07-30|Portable timepieces.

---

EP1491972A1|2004-12-29|Timepiece with flyback function and corresponding flyback mechanism

---

EP1546820A2|2005-06-29|Watch

---

CH705055B1|2012-12-14|Watch and watchband.

---

CH705600A1|2013-04-15|Device with image guide for watches.

---

CH700934B1|2010-11-15|Portable timepieces.

---

CH704160A2|2012-05-31|Timepiece.

---

DE69934086T2|2007-05-03|FASTENING STRUCTURE FOR ROTATABLE GLASS STRAP AND WIRE EQUIPPED WITH THIS FASTENING STRUCTURE

---

CH697818B1|2009-02-27|Clock.

---

CH697751A2|2009-02-13|Portable apparatus, particularly portable timepiece.

---

DE2752175A1|1978-06-29|CLOCK

---

CH704161A2|2012-05-31|Timepiece.

---

CH696782A5|2007-11-30|Portable AM.

---

DE3335215A1|1984-03-29|DATE SWITCHING MECHANISM

---

CH699942A2|2010-05-31|A portable device and portable watch.

---

DE3247642A1|1983-08-25|WRISTWATCH

---

DE2221695A1|1972-11-09|Waterproof watch case

---

CH711224B1|2019-11-29|Display unit for a mechanical date display device of a mechanical watch.

---

DE1902022B2|1970-12-03|Frictional coupling on time-keeping devices

---

CH713527A2|2018-09-14|Component mounting structure of a portable device.

---

DE102020003198B3|2021-10-28|Variable watch case with case ring and multi-layer base

---

DE2833802A1|1979-06-21|TIMING DEVICE WITH ALARM DEVICE, IN PARTICULAR ALARM CLOCK

同族专利:

---

公开号 | 公开日

---

US10025273B2|2018-07-17|

---

JP6608714B2|2019-11-20|

---

CN106990702B|2020-06-12|

---

CN106990702A|2017-07-28|

---

CH712078A2|2017-07-31|

---

JP2017129496A|2017-07-27|

---

US20170212474A1|2017-07-27|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

JPS5570770A|1978-11-22|1980-05-28|Citizen Watch Co Ltd|Case construction for digital display wrist watch|

---

CH636743A|1979-11-07|1983-06-30|Watch case|

---

CH649890A|1983-05-25|1985-06-28|

---

CH662034A|1985-09-06|1987-09-15|

---

FR2740569B1|1995-10-27|1997-12-12|Smh Management Services Ag|WATCHMAKING PIECE INCLUDING A CASE IN WHICH A WATCHMAKING MOVEMENT IS HOSTED|

---

TW468098B|1999-11-17|2001-12-11|Rado Montres Sa|Device for assembling a cover made of hard material on the middle part of a watch|

---

JP2002189084A|2000-12-21|2002-07-05|Seiko Instruments Inc|Wrist watch|

---

JP4714579B2|2005-12-26|2011-06-29|セイコーインスツル株式会社|clock|

---

JP5502705B2|2010-11-17|2014-05-28|セイコーインスツル株式会社|clock|USD858311S1|2017-04-26|2019-09-03|Shenzhen Dozen Technologies Co., Ltd.|Children's smart watch|

---

USD874309S1|2018-02-23|2020-02-04|Rj Watches S.A.|Watch dial|

---

USD931835S1|2020-02-12|2021-09-28|Switch Project, LLC|Wristband controller|

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

JP2016009971A|JP6608714B2|2016-01-21|2016-01-21|clock|

---