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    • 专利摘要:
    A timepiece with a lockable crown is proposed. A latch mechanism (20) includes a winding stem (24), a crown (25), an annular and threaded latch (32), an outward return spring (33), and a regulator (48). The winding stem (24) interacts with a movement correcting lever. The crown (25) is attached to the winding stem. The crown (25) is able to engage with the annular and threaded lock (32), which is supported so as to be movable in the axial direction. The outward return spring (33) returns the latch (32) to the crown (25). The regulator (48) is provided to stop the annular and threaded lock (32), against a return force produced by the outward return spring (33), in a predetermined position in which the crown (25) can be engaged with the annular and threaded lock (32) so as to be locked in the normal operating position of the needles.
    公开号:CH713532B1
    申请号:CH00315/18
    申请日:2018-03-13
    公开日:2021-12-30
    发明作者:Iguchi Katsunobu
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    BACKGROUND OF THE INVENTION
    1. Field of the invention
    The present invention relates to a lockable crown timepiece.
    2. Description of Related Prior Art
    [0002] A timepiece is known which comprises a crown tube secured to a winding stem so as to be movable in an axial direction, a crown secured to the crown tube, as well as an elastic member interposed between the stem winding mechanism and the crown. A restoring force produced by the elastic member is applied to the winding stem and the crown, thus preventing the crown from clicking.
    [0003] When the timepiece is switched to the time correction mode, the crown unscrewed and uncoupled (uncoupled) from the winding stem tube is pulled out, up to a time correction position. On the other hand, when the crown is held in a normal hands operation mode, the crown is pushed so that the winding stem switches to the normal hands operation mode by using the restoring force produced by the elastic member.
    [0004] In addition, there is known a mechanism commonly called a lock mechanism designed to prevent the crown from malfunctioning.
    [0005] This locking mechanism acts on the crown (regulates it) so that it cannot be pushed any further, by screwing and coupling the crown to a threaded portion of the winding stem tube, thus preventing a malfunction of the crown (see, for example, JP-A-8-248148 (patent document 1)).
    [0006] However, when the crown is locked, the threaded portion of the winding stem tube and the crown must be nested together by pushing the crown against the return force produced by the elastic organ. Furthermore, the crown must be screwed down and coupled to the threaded portion of the winding stem tube while a pushing force is applied to this crown.
    [0007] Here, when the winding stem is switched from the correction mode to the normal operating mode of the hands, it is necessary to actuate the corrector lever by means of a transmission of the thrust force from the crown to the stem winding, by means of the elastic member. Here, if the return force produced by the elastic member is low, the thrust force exerted by the crown is not transmitted sufficiently to the corrector lever. Therefore, the restoring force produced by the elastic member is set to be relatively strong. Consequently, the crown must be screwed down and coupled to the threaded portion of the winding stem tube while a high thrust force is applied to this crown. From this point of view, improvements can still be made with regard to maneuverability (ease of use).
    SUMMARY OF THE INVENTION
    The present invention is made in view of this context and an object thereof is to provide a timepiece with an incorporated crown lock mechanism which allows a lock mechanism to define (regulate) the operation of a crown by means of simple actuation (operation).
    According to one aspect of the present invention, in order to solve the problem described above, there is provided a timepiece according to claim 1.
    According to this constitution defined by claim 1, the winding stem and the crown are associated so as to be integral with one another, by fixing the crown to the winding stem. In other words, it is not necessary to interpose an elastic member between the winding stem and the crown as is the case in the related prior art. Therefore, the crown is pushed to the normal operating position of the hands, which allows the crown to directly push the winding stem. The winding stem is pushed, which allows the corrector lever to be switched into the normal operating mode of the hands. In addition, the crown is held to remain in the normal operating position of the hands, by means of the holding force exerted by the corrector lever.
    [0011] When the crown is brought into engagement with the lock in this state, the thrust force which, in the relevant prior art, must be applied against the elastic member does not have to be applied to the crown. In this way, a lock mechanism can regulate (set) the operation of the crown by means of a simple maneuver.
    [0012] In the aspect defined above, a thread can be formed in one of the parts which are the crown and the lock, while a thread able to be in engagement with the thread can be formed in the other part among the crown and the lock.
    According to this constitution, the crown placed in the normal operating position of the hands is turned, which screws and couples this crown to the lock. In this way, the arrangement by means of which the crown is in engagement with the lock, can be achieved simply, by forming a thread of screws in the lock and in the crown.
    [0014] In the aspect defined above, the lock can interlock with the crown by means of the return force produced by the elastic member, in a state where the crown is positioned in the normal operating position of the hands. and is uncoupled from the lock.
    [0015]According to this constitution, when the crown and the lock are not engaged with each other while in the normal operating position of the hands, the lock interlocks with the crown by means of the restoring force produced by the elastic member. Consequently, the crown is turned, which screws and couples the crown to the lock. In this way, the lock mechanism can define (regulate) the operation of the crown by means of a simple maneuver.
    [0016] In the aspect defined above, in a state where the crown and the lock are not coupled with each other, the restoring force produced by the elastic member may be weaker than a holding exerted by the corrector lever which holds the crown in the normal operating position of the hands.
    According to this constitution, the restoring force produced by the elastic member is transmitted to the crown via the lock. On the other hand, the crown is held in the normal operating position of the hands by means of the winding stem, by means of the holding force exerted by the corrector lever. The return force produced by the elastic member is chosen to be weaker than the holding force exerted by the corrector lever. Consequently, even if the restoring force produced by the elastic member is applied to the latch, the crown can be held in the normal operating position of the hands by means of the holding force exerted by the corrector lever.
    [0018] In the aspect defined above, in a state where the crown is positioned at the time correction position, the crown can be at a distance from the lock.
    [0019] According to this constitution, the lock is at a distance from the crown. Therefore, when setting the time by turning the crown, it is possible to prevent the crown from engaging (screwing and coupling) to the lock.
    [0020] In the aspect defined above, the regulator can be formed with a notched part which is formed in the axial direction, and with a lug which equips the lock and which is arranged so as to be movable in the notched part. The latch can be position-regulated so as to be positioned at the predetermined position by the fact that the ear is in contact with the indented part.
    According to the constitution according to claim 6, the regulator is formed with the indented part and the ear of the lock. In this way, the regulator can adopt a simple constitution.
    [0022] In addition, the ear is adjusted to the indented part. In this way, the simple constitution formed with the indented part and the lug can prevent rotation of the lock in a circumferential direction and can allow movement of the lock in the axial direction.
    According to one aspect of the present invention, a lock mechanism can define (regulate) the operation of a crown by means of a simple maneuver.
    BRIEF DESCRIPTION OF DRAWINGS
    Figure 1 is a perspective view showing a lockable crown timepiece according to one embodiment of the present invention. Figure 2 is an exploded view, in perspective, showing the timepiece with a lockable crown according to the embodiment of the present invention Figure 3 is a perspective view, with partial cutaway, of the timepiece with a crown lockable according to the embodiment of the present invention. Figure 4 is an exploded view, in perspective, showing a crown lock mechanism according to the embodiment of the present invention. Fig. 5 is a cross-sectional view taken along the line V-V of Fig. 1 and shows a state in which a crown is locked in a normal operating position of the hands, according to the embodiment of the present invention. Fig. 6 is a sectional view showing a state in which the crown is unlocked, according to the embodiment of the present invention. Fig. 7 is a sectional view showing a state in which the crown is pulled out to a time correcting position according to the embodiment of the present invention.
    DESCRIPTION OF AN EMBODIMENT
    In the following, we will describe an embodiment according to the present invention, with reference to the drawings.
    [0026] First of all, a lockable crown timepiece according to the embodiment will be described.
    [0027] In general, a device body comprising the drive part of a timepiece is called a “movement”. The finished product obtained by attaching a dial and hands to the movement and placing the movement in a timepiece box (body) is called a "complete assembly" of the timepiece.
    Figure 1 is an external view, in perspective, showing a timepiece according to the embodiment. Figure 2 is an exploded view, in perspective, showing the timepiece according to the embodiment. In the following, the expression "timepiece with lockable crown 1" is condensed into the expression "timepiece 1" and replaced by the latter.
    As shown in Figures 1 and 2, in the complete assembly of the timepiece 1, the interior of a timepiece case 4, comprising a case bottom 2 and a crystal 3, is a space in which are provided a movement 10, an intermediate frame 11 (casing circle), a dial 12, an hour hand 13 and a minute hand 14. The movement 10 is kept inside the case timepiece 4 by means of the intermediate frame 11. The dial 12 includes a scale to indicate time information. In this way, the current time can be read using timepiece 1.
    [0030] In addition, a winding stem tube 22 is arranged in a portion located at three o'clock on a side surface of the timepiece case 4. A crown 25 is mounted via a stem 24 in the winding stem tube 22. The crown 25 is provided in order to maneuver the movement 10 from the outside of the timepiece case 4 and it is assembled with the winding stem 24 inserted in the timepiece case 4. The winding stem 24 is mounted so as to be rotatable on an axis, relative to the timepiece case 4. The crown 25 is actuated in order to allow the timepiece to clockwork 1 switches between a normal operating mode of the hands and a time correction mode making it possible to correct the time indicated by the hour hand 13 and the minute hand 14.
    Figure 3 is a partially cutaway view, in perspective, of the timepiece according to the embodiment in question. Figure 4 is an exploded view, in perspective, showing a crown lock mechanism 20 according to the embodiment in question here.
    As shown in Figures 3 and 4, the crown lock mechanism 20 comprises a winding stem tube sub-assembly 21 carried by the timepiece case 4, the winding stem 24 carried by a movement plate 10, as well as the crown 25 attached to the winding stem 24.
    [0033] The winding stem tube sub-assembly 21 comprises a winding stem tube 22, an annular and threaded lock 32 (corresponding to what is called "lock" in the appended claims), a return spring towards the exterior 33 (corresponding to what is called "elastic member" in the appended claims), as well as a washer tube 34.
    [0034] The winding stem tube 22 is entirely in the shape of a cylinder and comprises an insertion portion 36, a larger diameter portion 37, an outer shoulder 38, two splitting indentations 39 (dividing indentations 39) , as well as two interior shoulders 41.
    Figure 5 is a sectional view along line V-V of Figure 1 according to the embodiment in question here.
    As shown in Figure 5, the insertion portion 36 is fitted in a through hole 43 of the timepiece case 4, which means that an inner end 36a of the insertion portion 36 is protruding into the inner space 45 of the timepiece case 4 after being passed through the through hole 43. Further, the larger diameter portion 37 is formed in an outer end 36b of the insertion portion 36 and it projects outside 46 of the timepiece case 4, from an outer surface 4a of this timepiece case 4. The outer shoulder 38 is formed in the outer periphery of the winding stem tube 22, through the insertion portion 36 and the larger diameter portion 37.
    [0037] In the state where the insertion portion 36 is fitted into the through hole 43, the outer shoulder 38 in the winding stem tube 22 is fixed to a shoulder 47 of the timepiece case 4 , by soldering or by using an adhesive.
    In Figure 4 to which reference is made again, the two splitting indented portions 39 are arranged with an equal spacing of 180° in the circumferential direction. The inner end 39b of each of the splitting indented parts 39 is open and the two indented separating parts extend in the axial direction of the winding stem tube 22, while having a constant width from the inner end to the center (that is to say to the bottom of notch 39a). The indentation bottom 39a of the splitting indentation 39 is formed at the level of the middle of the winding stem tube 22. The splitting indentation 39 forms part of the regulator 48 (which will be described later).
    The two inner shoulders 41 are formed in the inner end of the winding stem tube 22.
    The annular and threaded lock 32 is housed in an interior space 51 of the winding stem tube 22. The annular and threaded lock 32 has an annular shape and comprises a lock thread 53 (female threaded portion of the lock) and two ears 54.
    The lock thread 53 is formed in an inner periphery (inner wall) of the annular and threaded lock 32. The two lugs 54 are formed at the inner end of the annular and threaded lock 32 and on the outer periphery. The two lugs 54 are fitted in the indented splitting part 39 so as to be movable in the axial direction of the winding stem tube 22. The lug 54 fits in the indented splitting part 39, which blocks the rotation of the lock annular and threaded 32 in the circumferential direction.
    [0042] In this way, a simple construction in which the lug 54 of the annular and threaded lock 32 fits into the splitting indented part 39 can block the rotation of the annular and threaded lock 32 according to the circumferential direction and can allow the movement of this annular and threaded lock 32 in the axial direction.
    [0043] In addition, the lugs 54 come into contact with the bottom of the indentation 39a of each of the splitting indentations 39, which regulates the annular and threaded lock 32 in position, causing it to remain at the level of a predetermined position. In other words, the regulator 48 (means for positioning and/or guiding and/or defining all or part of the stroke) is formed with the two splitting indented parts 39 and the two lugs 54. The regulator 48 is obtained by using the two splitting indented parts 39 and the two lugs 54, which allows the regulator 48 to have a simple construction.
    The outward return spring 33 is housed in the interior space 51 of the winding stem tube 22 and on the inner end side of this winding stem tube 22, from the annular and threaded lock 32. The outward return spring 33 is disposed coaxially with the winding stem tube 22, and one end (the crown side end 25) of the outward return spring 33 is in contact with the ring and thread lock 32. The outward return spring 33 is a compression coil spring.
    [0045] The washer tube 34 is housed in the interior space 51 of the winding stem tube 22 and on the inner end side of the winding stem tube 22, from the outward return spring 33. washer 34 is in contact with the other end of the outward return spring 33. The washer tube 34 has an annular shape and has a washer flange 56 which projects in a radial direction from the inner end .
    [0046] The washer flange 56 of the washer tube 34 is in contact with the inner shoulder 41, and the inner end 36a (i.e. the inner end of the insertion portion 36) of the winding stem tube 22 is tightened inwards in the radial direction (clamped). Therefore, washer tube 34 is attached to inner end 36a of winding stem tube 22.
    As shown in Figure 5, the washer tube 34 is fixed to the inner end 36a of the winding stem tube 22. In this way, the annular and threaded lock 32 is biased against the crown side 25, by the outward return spring 33.
    [0048] In this way, the winding stem tube sub-assembly 21, the winding stem tube 22, the annular and threaded lock 32, the outward return spring 33 and the washer tube 34 are integrally unified (they form a coherent unit). In the winding stem tube 21 sub-assembly, the winding stem tube 22 is carried by the timepiece case 4.
    As shown in Figures 4 and 5, the winding stem 24 is entirely in the shape of a cylinder and comprises a portion 61, a recessed annular portion 62, a winding stem collar 63, as well as a thread of winding stem 64.
    The portion 61 fits in a hole 66 of the movement 10. In this way, the portion 61 is rotatable in the circumferential direction and it is carried so as to be movable in the axial direction.
    The recessed annular portion 62 is formed in the middle of the portion 61. The recessed annular portion 62 is a recessed annular portion having a hollow shape towards the axial center, from the outer peripheral surface of the portion 61 The corrector lever 68 is disposed in the hollow annular portion 62. A shouldered portion 69 of the movement 10 is disposed on a side surface 62a which is on the corrective lever 68, opposite the hollow annular portion 62.
    [0052] Consequently, the corrector lever 68 interacts with the recessed annular portion 62, in the shouldered portion 69 of the movement 10. In this way, in the corrector lever 68, the winding stem 24 moves along a axial direction, which allows the corrector lever 68 to switch between a normal operating position of the hands P1 for the normal operating mode of the hands and a time correction position P2 for the time correction mode making it possible to correct the 'time.
    In a state where the corrector lever 68 is placed in the normal operating position of the hands P1, a sliding pinion and an adjustment wheel provided for correcting the time do not mesh with each other. On the other hand, in a state where the corrector lever 68 is placed at the time correction position P2, the sliding pinion and the adjusting wheel mesh with each other so as to enable time correction. 'time.
    [0054] The winding stem collar 63 is provided at the outer end of the portion 61. The diameter of the winding stem collar 63 is larger, in a circular shape, outward, from the portion 61, in the radial direction. As the diameter of the winding stem collar 63 is larger in a circular shape, the winding stem collar 63 is received in a recessed portion 71 of the movement 10, so as to be rotatable around the axis.
    The winding stem collar 63 is received in the recessed portion 71, which means that the corrector lever 68 is positioned at the normal operating position of the hands P1 in the normal operating mode of the hands. On the other hand, the winding stem collar 63 is moved away from the recessed portion 71, which causes the corrector lever 68 to move to the time correction position P2 in the time correction mode. 'time.
    The winding stem thread 64 protrudes from the winding stem collar 63. The winding stem thread 64 extends in the direction away from the movement 10 and a male screw is formed in the outer periphery. The winding stem thread 64 passes through each of the interior spaces of washer tube 34, outward return spring 33, and threaded ring lock 32.
    The crown 25 engages with the winding stem thread 64 of the winding stem 24, by screwing and coupling. The crown 25 comprises a shaft portion 73 fitted to the winding stem tube 22, a crown seal 74 placed in the shaft portion 73, as well as a head 75 provided at the level of the outer end of the shaft portion 73.
    The shaft-forming portion 73 is housed coaxially in the interior space 51 of the winding stem tube 22. The shaft-forming portion 73 is movable in the axial direction and is supported by the winding stem tube 22 so as to be rotatable in the circumferential direction.
    The shaft portion 73 has a crown thread 77 (male crown thread portion) formed in the outer periphery of the inner end, a crown thread 78 (female crown thread portion) formed inside the inner end, as well as an annular groove 79 formed in the outer periphery, between the inner end and the outer end.
    The crown thread 77 and the crown thread 78 are formed so as to be coaxial with the shaft portion 73. A tip 64a of the winding stem thread 64 is screwed and coupled to the crown thread 78. In this state, the winding stem thread 64 is attached to the shaft portion 73 as if it were integral therewith.
    In other words, the crown is positioned coaxially with the central axis of the winding stem 24 and it is fixed to this winding stem 24 as if it were integral with it. Therefore, the length of the winding stem 24 can be adjusted by adjusting the amount that the tip 64a of the winding stem thread 64 is screwed into the crown thread 68. In this way, the length of the winding stem 24 is no longer limited, which allows the winding stem 24 to find application in various types of timepiece.
    [0062] Further, crown thread 77 is screwed and releasably coupled (reversibly) to lock thread 53 of annular and threaded lock 32. Accordingly, crown 25 is rotated around the central axis of the winding stem 24, which causes the crown 25 to engage with the annular and threaded lock 32, by screwing and coupling.
    [0063] In this way, a constitution in which the crown 25 is engaged with the annular and threaded lock 32 so as to be removable (removable) can be easily achieved, by forming screw threads in the annular and threaded lock 32 and in the crown 25.
    [0064] Furthermore, the crown seal 74 fits in the annular groove 79. The crown seal 74 is in contact with the inner periphery (inner wall) of the winding stem tube 22 when it is fitted in the annular groove 79. In this way, a gap between the inner periphery (inner wall) of the winding stem tube 22 and the outer periphery of the shaft portion 73 is sealed with the annular groove 79.
    Here, the crown 25 is placed in a normal operating position of the hands P3 for the normal operating mode of the hands. As the crown 25 is placed in the normal operating position of the hands P3, the corrector lever 68 is placed in the normal operating position of the hands P1. In the state where the crown 25 is placed in the normal operating position of the hands P3, an inner surface 75a of the head 75 of the crown 25 is in contact with the outer surface 4a of the timepiece case 4.
    [0066] In addition, the two lugs 54 of the annular and threaded bolt 32 are in contact with the bottom of the notch 39a of each of the splitting indented parts 39, by using the return force produced by the return spring towards the outer 33. The annular and threaded lock 32 is regulated to remain at a predetermined position.
    In this state, the head 75 of the crown 25 is gripped by the fingers and this head 75 is turned clockwise. The crown 25 positioned at the normal operating position of the hands P3 is turned around the portion forming the shaft 73 in the counterclockwise direction. Therefore, crown thread 77 of crown 25 is turned counter-clockwise. The lug 54 of the annular and threaded bolt 32 is in engagement with the splitting indented part 39.
    [0068] In this manner, the crown thread 77 is turned counter-clockwise, causing the bolt thread 53 (i.e., ring and threaded bolt 32) to the crown thread 77 moves towards the movement 10, against the restoring force produced by the outward return spring 33.
    [0069] Crown 25 is rotated as far as it can be by a predetermined amount, causing latch thread 53 to separate from crown thread 77.
    [0070] Figure 6 is a sectional view showing a state in which the crown 25 is unscrewed and not coupled to the annular and threaded lock 32, according to the embodiment.
    As shown in Figure 6, the crown 25 and the annular and threaded lock 32 are made independent of each other (are no longer in engagement with each other) by an action consisting in dissociating the lock thread 53 of the crown thread 77. The lug 54 of the ring and thread lock 32 is separated from the regulator 48. In this state, the outward return spring 33 is compressed by the ring and thread lock 32 and the washer tube 34.
    The biasing force produced by the compressed outward biasing spring 33 maintains a state in which an outer end 53a of the latch thread 53 meshes with an inner end 77a of the crown thread 77.
    In this state, the corrector lever 68 is held in the normal operating position of the needles P1, by means of a predetermined holding force. The return force produced by the compressed outward return spring 33 is chosen to be weaker than the predetermined holding force exerted by the corrector lever 68. In this way, even if the return force produced by the the outward return spring 33 is applied to the shaft portion 72 of the crown 25, via the annular and threaded lock 32, in the direction of an arrow A, the crown 25 can be maintained at the position normal operation of the hands P3, by means of the holding force exerted by the corrector lever 68.
    The head 75 of the crown 25 is grasped by the fingers and this crown 25 is pulled out, one step, from the normal operating position of the hands P3 to a time correction position. P4 for the time correction mode allowing the time to be corrected, by means of a force greater than the predetermined holding force exerted by the corrector lever 68.
    [0075] Figure 7 is a sectional view showing a state in which the crown 25 is switched to the time correction position P4, according to the embodiment.
    As shown in Figure 7, the crown 25 is switched from the normal operating position of the hands P3 to the time correction position P4. At the same time, the correcting lever 68 is switched from the normal hand operation position P1 to the time correcting position P2 and the correcting lever 68 is held by means of the predetermined holding force.
    The crown 25 is pulled up to the time correction position P4, which means that the lug 54 is in contact with the regulator 48 due to the return force produced by the return spring towards the 33. Therefore, the annular and threaded lock 32 is maintained at the predetermined position. In this way, the portion forming a shaft 73 of the crown 25 can be moved away up to a predetermined interval S1, from the annular and threaded lock 32.
    The crown 25 pulled out, one step, to the time correction position P4, is held at this time correction position P4, by means of the predetermined holding force exerted by the corrector lever 68.
    In this state, the head 75 of the crown 25 is grasped by the fingers and the crown 25 is turned around the shaft-forming portion 73 so that the time indicated by the hour hand 13 and the minute hand 14 (see Figure 2).
    [0080] Here, the portion forming a shaft 73 of the crown 25 is maintained in a state in which it is remote from the annular and threaded lock 32, by a distance equal to the predetermined interval S1. Therefore, when the time is set by means of a rotation of the crown 25, it is possible to prevent the crown thread 77 from screwing in and mating with the lock thread 53.
    [0081] In addition, the end 64a of the winding stem thread 64 is screwed and coupled to the crown thread 78, which fixes the winding stem 24 and the crown 25 as if they were integral. In this way, when the crown 25 pulled out, one step, up to the time correction position P4, is turned in order to correct the time, it is possible to eliminate unstable operation of the crown 25 and it is possible to improve the operability.
    [0082] In addition, when the crown 25 is unscrewed and uncoupled from the annular and threaded lock 32, the crown 25 can be maintained in the normal operating position of the hands P3 by means of a displacement of the annular and threaded lock 32 towards the movement 10.
    [0083] On the other hand, in some cases, a certain timepiece is locked in the normal operating position of the hands, in a state where the crown is screwed down and coupled to the winding stem tube. In the case of this timepiece, in a state where the crown is unscrewed and uncoupled from the winding stem tube, the crown is in a position projecting from the timepiece case.
    [0084] In order to correct the time, the protruding crown must be pulled out an additional step and, therefore, the amount by which the crown is pulled out increases.
    Conversely, the timepiece 1 according to the embodiment can maintain the crown 25 in the normal operating position of the hands P3 in a state where the crown 25 is unscrewed and uncoupled from the annular and threaded lock 32 Therefore, in a state where the crown 25 is pulled out, one step, from the normal operation position of the hands P3 to the time correction position P4, the amount by which the crown 25 is pulled out can be minimized, compared to the timepiece comprising a normal lock mechanism. In this way, for example, even if the timepiece 1 falls when it is in this state, it is possible to prevent damage to the crown 25 or the winding stem tube.
    Incidentally, when the crown 25 is switched from the time correction position P4 to the normal operating position of the hands P3, the crown 25 is pushed one step from the time correction position. hour P4 to the normal operating position of the hands P3, against the predetermined holding force exerted by the corrector lever 68. While the crown 25 is pushed, the portion forming a shaft 73 of the crown 25 comes in contact with the annular and threaded lock 32. When the crown 25 is pushed even further, the annular and threaded lock 32 is pushed towards the movement 10, against the return force produced by the return spring towards the 33. Therefore, the outward return spring 33 is compressed.
    Here, the return force exerted by the outward return spring 33 compressed is chosen to be weaker than the predetermined holding force exerted by the corrector lever 68. Consequently, the crown 25 can be easily pushed from the correction position P4 to the normal operating position P3, against the return force produced by the outward return spring 33 (see Figure 6).
    As shown in Figure 6, after the crown 25 has been pushed to the normal operating position of the hands P3, the crown 25 is turned clockwise. In this state, the return force exerted by the compressed outward return spring 33 is an expulsion force and it is applied to the crown 25, through the annular and threaded lock 32, according to the direction of arrow a.
    Here, the return force produced by the compressed outward return spring 33 is chosen to be weaker than the predetermined holding force exerted by the corrector lever 68. The crown 25 is held in the operating position. normal of the hands P3 by means of the predetermined holding force exerted by the corrector lever 68. In other words, contrary to what is the case in the prior art, the crown 25 must not be turned in the direction hands of a clock and at the same time pushed against the restoring force exerted by the outward return spring 33. In this way, the crown 25 can be easily turned clockwise. a watch.
    In addition, the shaft portion 73 of the crown 25 is in contact with the annular and threaded lock 32. In other words, the inner end 77a of the crown thread 77 is in contact with the outer end 53a of the latch thread 53. In addition to this constitution, the latch thread 53 is pressed against the crown thread 77 by means of the restoring force exerted by the outward return spring 33.
    [0091] Consequently, the crown 25 is turned clockwise by grasping the head 75 of the crown 25 with the fingers. In this way, the crown thread 77 can be easily screwed and mated to the latch thread 53. The crown thread 77 is screwed and mated to the latch thread 53 which causes the crown 25 to be locked in the normal operating position. P3 needles.
    Furthermore, in a state where the crown 25 returns to the normal operating position of the hands P3, the crown thread 77 can be screwed and coupled to the lock thread 53 by means of a rotation of the crown 25 clockwise. Consequently, the crown 25 does not need to be turned and at the same time pushed towards the movement 10. In this way, it is easy to carry out a maneuver in which the crown thread 77 is screwed and coupled to the internal thread of lock 53.
    [0093] As shown in Figure 5, the crown thread 77 is screwed and coupled to the lock thread 53, which moves the annular and threaded lock 32 towards the crown 25 so that the lug 54 comes into contact with the regulator 48. In this way, the crown 25 is locked in the normal operating position of the hands P3.
    In this way, the timepiece 1 can easily push the crown 25 from the time correction position P4 to the normal operating position of the hands P3. In addition, the crown 25 positioned at the normal operating position P3 can easily be turned clockwise. In addition to this constitution, the biasing force exerted by the outward biasing spring 33 is employed, which enables the crown thread 77 to be easily screwed and mated with the latch thread 53.
    [0095] In this way, the ease of actuation can be improved when the crown 25 is pushed from the time correction position P4 to the normal operating position of the hands P3 and then locked in this operating position. normal P3 needles.
    The technical scope of the present invention is not limited to the embodiment described above and the latter may be subject to various modifications within the scope not departing from the spirit of the present invention.
    [0097] For example, in the embodiment described above, as an example of how the crown 25 engages with the annular and threaded lock 32, there has been described the example in which the thread crown 77 of crown 25 is screwed and mated to bolt thread 53 of annular and threaded bolt 32. However, the present invention is not limited thereto. As another example, crown 25 may be engaged with annular and threaded lock 32 by means of a pawl or claw.
    Furthermore, in the embodiment described above, the example described is that in which the end 64a of the winding stem thread 64 is screwed and coupled to the crown thread 78. However, the present invention does not is not limited to this. As another example, the end of the winding stem can be attached to the crown using other means such as driving in.
    [0099] Alternatively, the thread can be formed on the end of the winding stem, while the thread can be formed on the crown. The crown is screwed down and mated to the end of the winding stem, which secures the winding stem and the crown so that they are as if they were integral with each other.
    [0100] Furthermore, in the embodiment described above, the example described is that in which two splitting indented parts 39 are formed in the winding stem tube 22 and two lugs 54 equip the annular and threaded lock 32. However, the present invention is not limited thereto. As another example, the two ears can equip the winding stem tube 22, while the indented parts can be formed in the annular and threaded lock 32.
    In addition, in the embodiment described above, the example described is that in which the outward return spring 33 of helical shape serves as an elastic member. However, the present invention is not limited thereto. As another example, a cylindrical rubber member may be employed as the resilient member.
    权利要求:
    Claims (6)
    [1]
    1. Lockable crown timepiece, comprising:a winding stem (24) which interacts with a lever (68) correcting a movement (10),a crown (25) which is fixed to the winding stem (24) coaxially with a central axis of the winding stem (24), the crown (25) and the winding stem (24) being movable in one direction axis of the winding stem (24), so as to be able to reach a normal operating position of the hands and an hour correction position,a latch (32) with which the crown (25) is able to engage and which is supported so as to be movable in the axial direction,an elastic member (33) which biases the latch (32) towards the crown (25), anda regulator (48) which is provided to stop the lock (32), against a return force produced by the elastic member (33), in a predetermined position in which the crown (25) can be in taken with the lock (32) so as to be locked in the normal operating position of the hands.
    [2]
    2. Lockable crown timepiece according to claim 1,wherein a thread (77) is formed in one of the crown (25) and latch (32) parts, andwherein an internal thread (78) able to be engaged with the thread (77) is formed in the other part among the crown (25) and the lock (32).
    [3]
    3. Lockable crown timepiece according to claim 2,wherein, in a state where the crown (25) is positioned at the normal operating position of the hands and is uncoupled from the latch (32), the latch (32) intermeshes with the crown (25) by the force of return produced by the elastic member (33).
    [4]
    4. Timepiece with lockable crown according to one of claims 1 to 3,in which, in a state where the crown (25) and the latch (32) are uncoupled with each other, the restoring force produced by the elastic member (33) is weaker than a force of hold exerted by the corrector lever (68) which holds the crown (25) in the normal operating position of the hands.
    [5]
    5. Timepiece with lockable crown according to one of claims 1 to 4,wherein, in a state where the crown (25) is positioned at the time correction position, the crown (25) is remote from the lock (32).
    [6]
    6. Timepiece with lockable crown according to one of claims 1 to 5,wherein the regulator (48) is formed with a scalloped part (39) and with a lug (54) which equips the lock (32) and which is arranged so as to be movable in the scalloped part (39), the scalloped part (39) being formed in the axial direction, andwherein the lock (32) is stopped outwardly, in the predetermined position, by the fact that the lug (54) is in contact with the bottom of the indented part (39).
    类似技术:
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    同族专利:
    公开号 | 公开日
    CH713532A2|2018-09-14|
    CN108572541B|2021-07-27|
    US20180259906A1|2018-09-13|
    US10613481B2|2020-04-07|
    JP6829116B2|2021-02-10|
    JP2018151254A|2018-09-27|
    CN108572541A|2018-09-25|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017047502A|JP6829116B2|2017-03-13|2017-03-13|Watch with crown lock mechanism|
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