• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a timepiece arranged to prevent unintentional rotation of a rotational member housed in the housing of said timepiece and the idling rotation of an actuating element rotating said driven member into rotation when, for example, the timepiece is worn and in which no increase in diameter of the head portion of the actuating element is caused. Mounted on a housing (12) to which a tube (28) is attached is an actuating element (31) having a head portion (32) rotated outside the housing and a shaft portion ( 33) inserted in the tube (28) so as to be able to move between a first position and a second position. The actuating element (31) is pressed by a thrust element such as a coil spring (40) so that the actuating element (31) is arranged in the second position. Inside the housing (12), mounted on the shaft portion (33), is a drive gear (35) in constant engagement with a driven gear portion (19) of a driven member. rotation such as a display member (17) housed in the housing (12). Stop means (S) are provided inside the housing (12). In the state in which the actuating element (31) is disposed in the first position, the stop means (S) prevents rotation of the head portion (32) and, in the state in which the actuating element (31) is arranged in the second position, the stop means (S) allow rotation of the head portion (32) for a joint displacement of the rotatably driven member. The rotated member may be a flange rotating around a dial.
    公开号:CH710111A2
    申请号:CH01299/15
    申请日:2015-09-09
    公开日:2016-03-15
    发明作者:Haruki Hiranuma；Masahiro Ishida
    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 timepiece such as a portable timepiece which comprises, in a housing, a rotatably driven member intended to be rotated by manipulation outside the housing constituting the housing. external element and which comprises stop means preventing an involuntary rotation of this rotatably driven member.
    2. Description of the state of the art
    [0002] Timepieces are known in which certain measures are taken to prevent any malfunctioning of an internal rotating ring, such as a flange, arranged so as to be able to turn along the peripheral edge of a dial. inside an outer casing, that is to say any involuntary rotation of the inner rotating ring while, for example, the timepiece is worn (see, for example, Patent Document 1 (JP -A-2010-139 399)).
    In the timepiece described in Patent Document 1, the casing band of the casing is provided with mutual engaging / disengaging means which, when the actuating member moves, are brought into position. interengaging with, or disengaging from, an inner end portion of the housing (hereinafter referred to as the inner end portion) of a pipe extending through the housing strip and secured in position, and an internal rotating ring inside the housing. The actuating member can be pushed and pulled by pinching its head portion, and is pressed out of the housing by a coil spring.
    The mutual engaging / disengaging means is composed of a drive transmission gear having teeth protruding from the outer periphery of the radially inner end portion of the pipe, and a gear of drive which is formed on the rear surface of the inner rotary ring and with which the drive transmission gear is brought into mutual engagement, and from which it is disengaged by axial movement of a rotational actuating part .
    In the timepiece described in Patent Document 1, in a state other than during the rotation of the internal rotating ring, the drive gear is separated from the drive transmission gear, so that an involuntary rotation of the actuating element is not transmitted to the internal rotating ring. However, in the state in which the actuating element is pushed out of the housing by the helical spring, it is possible to deliberately rotate the actuating element; in this case, the actuating element only rotates empty, and can not jointly move the inner rotating ring, so that there is a fear that the user does not think that something is happening. 'abnormal with the timepiece.
    In addition, when the timepiece is shocked, it is difficult to properly maintain the immobile state of the inner rotating ring so that, by rotating the internal rotating ring, when the user pushes the actuating element for bringing the drive gear in meshing with the drive transmission gear, there is a fear that the drive gear will strike an end portion of the transmission gear drive, causing a deficient meshing between the drive gear and the drive transmission gear.
    In this regard, there is known a timepiece provided with a stop means which, while constantly maintaining meshing between the drive gear and the drive transmission gear, prevents unintentional rotation of the inner rotating ring and empty rotation of the actuating element when, for example, the timepiece is worn (see, for example, Patent Document 2 (JP-A- 2011-185 835)).
    In the timepiece of Patent Document 2, the end portion located outside the housing (hereinafter referred to as the outer end portion) of a pipe extending through the web of the casing of the casing and fixed in position, and the head portion of an actuating element inserted in the pipe, are provided with stop means brought into engagement and disengaged when the actuating element moves. The actuating member allows rotation as well as pushing and pulling by holding its head portion, and is pressed in the axial direction by a spring. A drive gear is attached to the shaft portion of the actuating member, and this gear is steadily maintaining a state in which it meshes with the teeth of an internal rotating ring in the housing. Thus, by rotation of the actuating element, it is possible to rotate the drive gear.
    In the Patent Document 2, the stop means are disposed outside the housing, and these means are composed of a locking gear having external teeth projecting radially out of the outer periphery. the outer end portion of the pipe, and an engagement ring mounted on the inner peripheral surface of the head portion of the actuating member. The engagement ring has internal teeth engaged with and disengaged from the outer teeth of the locking gear. Normally, because of the spring biasing force, the actuating member is disposed in a first position where the outer and inner teeth engage (meshing) with each other, so that any involuntary rotation of the actuating element is prevented. By axially moving the actuating element against the pushing force of the spring element to a second position where the outer teeth and the inner teeth are disengaged from each other, it is possible to rotate the element actuating.
    In a timepiece in which the stop means are disposed outside the housing, as described above, the stop means have a relatively bad weather resistance, so that this means is easily exposed to human perspiration, wind and rain, dust, etc., which means the medium is prone to corrosion. In addition, the engagement ring of the stop means is mounted on the inner face of the head portion of the actuating member, so that it is feared to see the diameter of the head portion. increases. An increase in the diameter of the head portion is not compatible with promoting a reduction in case thickness. At the same time, an increase in the diameter of the head portion results in an operational torque reduction, while the head portion is easily wedged by the edge of the trouser pocket when the timepiece is worn, which is not desirable.
    SUMMARY OF THE INVENTION
    An object of the present invention is to provide a timepiece in which it is possible to improve the weather resistance of a stop means preventing any involuntary rotation of a rotatably driven member housed in a housing and the idling rotation of an actuating member rotating the rotatably driven member while, for example, the timepiece is worn and in which there is no cause for increasing the diameter of the head portion of the actuating element due to the stopping means.
    To achieve the above purpose, there is provided, according to the present invention, a timepiece comprising: a housing having a through hole, a rotatably driven member having a gear portion driven and housed so as to to be able to turn in the case; a pipe attached to the through hole; an actuating member having a head portion for a rotation operation, disposed outside the housing and a shaft portion rotatable relative to the pipe and movably inserted in the direction in which extends the central axis of the pipe and configured to be moved between a first position and a second position defined by a positional shift in the direction in which the central axis extends; a biasing member pressing the actuating member so that the actuating member is disposed in the second position; a drive gear mounted on an end portion of the shaft portion protruding inwardly of the housing and held in constant engagement with the driven gear portion; and stop means provided within the housing and preventing rotation of the head portion when the actuating member is disposed in the first position and allowing rotation of the head portion for joint movement of the rotated member when the actuating element is disposed in the second position.
    In the timepiece of the present invention, the stop means are disposed inside the housing, so that the stop means are improved in terms of weather resistance. At the same time, the stop means do not use the head portion of the actuating element, located outside the housing, so that the head portion does not see its increased diameter because of the means stop.
    And, in this timepiece, in the state other than that in which the rotated member is rotated, the actuating element is disposed in the first position by the plating force of the plating member, and the stopping means prevents rotation of the head portion of the actuating member. Therefore, although the drive gear and the driven gear portion are held consistently meshing with each other, it is possible to prevent inadvertent rotation of the rotatably driven member and empty rotation of the actuating element. When the rotated member is rotated, the head portion is pinched and depressed in the second position. Therefore, a state is reached in which the stopping means allow rotation of the actuating element. In this state, as the head portion is rotated, the rotation of the actuating member is transmitted to the rotatably driven member through the mutual engagement between the drive gear and the drive. driven gear portion, and the desired level of rotation is imparted to the rotatably driven member.
    According to a preferred embodiment of the timepiece of the present invention, there is provided a timepiece, wherein the stop means comprise: a tapered pawl portion formed at an end portion; pipe facing the interior of the housing and protruding toward the drive gear along the direction in which the central axis extends; and an engaging portion provided on the drive gear and configured to be brought into engagement with and disengaged from the pawl portion as the actuating member moves back and forth between the first position and the second position.
    According to this preferred embodiment, the pawl portion is formed using the thickness of the end portion of the pipe, and does not protrude beyond the periphery of the end portion of the pipe in the direction radial of the pipe. Therefore, it is not necessary to provide a space in which the pawl portion and the mutual engagement portion are provided along the outer periphery of the end portion of the pipe. Or, even when the mutual engaging portion is of a greater thickness than the end portion of the pipe and protrudes beyond the outer periphery of the end portion of the pipe, the oversize dimension is small . According to this, it is possible to reduce the space occupied by the stop preventing an incorrect operation of the member rotated in the housing relative to the direction of the thickness of the housing. Furthermore, because of the tapered configuration of the pawl portion, as the actuating member is moved to the first position by the plating member, it attempts to engage the engaging portion and the pawl portion, it is possible to prevent the engagement portion from being caught and trapped by the pawl portion upon movement of the actuating member to the first position; which makes it easy to engage the engagement portion with the ratchet portion.
    According to a preferred embodiment of the present invention, there is provided a timepiece, wherein the pawl portion has a pair of side surfaces in mutual engagement with the engagement portion; and these lateral surfaces are oblique and see their reciprocal distance progressively reduced.
    According to this preferred embodiment, the tapered configuration of the pawl portion is formed by a pair of oblique lateral surfaces which are gradually reciprocated. Therefore, when the engaging portion attempts to engage the ratchet portion as the actuating member is moved from the second position to the first position by the plating member, it is possible to to prevent the engaging portion from being caught and trapped by the pawl portion when moving the actuating member to the first position. Thus, it is possible to interengage without difficulty the engaging portion with the ratchet portion.
    According to a preferred embodiment of the timepiece of the present invention, there is provided a timepiece, wherein the pawl portion has a pair of lateral surfaces in mutual engagement with the engagement portion. ; and these side surfaces are oblique and have their reciprocal distance gradually reduced, the engaging portion being tapered towards the pipe.
    According to this preferred embodiment, the tapered configuration of the engaging portion is formed by a pair of oblique side surfaces which are gradually reciprocated. Therefore, as the actuating member is moved from the second position to the first position by the plating member, it attempts to engage the engagement portion and the ratchet portion. it is possible to prevent the engaging portion from being caught and trapped by the pawl portion when moving the actuating member to the first position. Thus, it is possible to interengage without difficulty the engaging portion with the ratchet portion.
    According to a preferred embodiment of the timepiece of the present invention, a plurality of pawl portions are provided side by side all around the periphery of the pipe; and the same number of engagement portions as pawl portions are provided on the side-by-side drive gear around the periphery of this gear.
    According to this preferred embodiment, when the actuating element is disposed in the first position, a larger number of pawl parts and engaging parts are brought into mutual engagement, so that It is possible to obtain a high performance in terms of preventing unintentional rotation of the actuating element by the stop means.
    In addition, it is feared that an excessive rotation actuating force is applied by the user to the head portion of the actuating element disposed in the first position. In this case, when the actuating member is moved to the second position, the oblique engaging surfaces of the pawl portion and the mutual engaging portion change their relative positions while generating a slip between them. and, as a result of their progression, the engagement portion is disengaged from the ratchet portion. Thus, there is no concern that undue stress may be applied to the ratchet portion and the engaging portion and damage them.
    At the same time, immediately after the engagement portion is disengaged from the pawl portion, the actuating member is moved to the first position by the pusher member, and the engagement portion is brought into mutual engagement with the ratchet portion. Therefore, it is possible to give a tactile sensation to the operator, so that it is possible to perceive an incorrect operation of the actuating element disposed in the first position.
    According to a preferred embodiment of the timepiece of the present invention, the engagement portion is integral with the drive gear.
    According to this preferred embodiment, as described above, the pawl portion is formed using the end portion of the pipe; furthermore, no component to provide the engaging portion is needed. Thus, it is possible to form the stop means without increasing the number of components.
    According to a preferred embodiment of the timepiece of the present invention, the engagement portion protrudes out of a side surface of the drive gear.
    According to this preferred embodiment, it is possible to reduce the diameter of the drive gear. That is, the engagement portion protrudes out of a side surface of the drive gear, so that when engaging the engagement portion with the part of the ratchet in the first position, it is not necessary to arrange, on the drive gear, a clamped part with the outer periphery of the end part of the pipe, so that it is possible to reduce the diameter of the drive gear. Thus, the arrangement space for the drive gear in the housing with respect to the thickness direction of the housing is advantageously small.
    According to a preferred embodiment of the timepiece of the present invention, a disc-shaped dial is housed in the housing; and the rotatably driven member is a ring-like display member rotatably disposed along the outer peripheral edge of the dial.
    According to this preferred embodiment, any involuntary rotation of the actuating element plated by the plating element as described above and disposed at the first position is prevented by the stop means. Therefore, it is possible to eliminate any erroneous manipulation of the display member rotated in the housing together with the rotation of the actuating element. Thus, it is possible to eliminate any unintentional disturbance of the display of the display member and the display of the dial or a function determined by the relationship with the hands indicating the time (for example, a function chronometer).
    In the timepiece according to the present invention, it is possible to improve the weather resistance of the stop means which prevent any involuntary rotation of the rotational member arranged in the housing while, for example the timepiece is worn, and an unintentional idle rotation of the actuating member rotated from outside the housing to move the rotatably driven member together therewith while, for example, the timepiece is worn; at the same time, the head portion of the actuating element does not see its increased diameter because of the stop means.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0032]<tb> Fig. 1 <SEP> is a front view of a wristwatch according to a first embodiment of the present invention.<tb> Fig. 2 <SEP> is a sectional view taken along the arrow line F-F of FIG. 1.<tb> Fig. 3 <SEP> is a sectional view corresponding to FIG. 2, illustrating the actuating element of the wristwatch according to the first embodiment as arranged in a second position where it is rotated.<tb> Fig. 4 <SEP> is a sectional view taken along the arrow line F4-F4 of FIG. 3.<tb> Fig. <SEP> is a perspective view of a pipe with which the timepiece of FIG. 1.<tb> Fig. 6 <SEP> is a perspective view of a drive gear with which the timepiece of FIG. 1.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    The first embodiment of the present invention will be described with reference to FIGS. 1 to 6.
    In figs. 1 to 3, number 11 indicates a timepiece such as a portable timepiece, more specifically, a waterproof wristwatch. The wristwatch 11 is equipped with a housing 12 constituting the outer element thereof.
    As shown in FIGS. 2 and 3, there are housed in the housing 12, the required elements such as a dial 13, a movement 15 controlling the movement of the hands indicating the time 14, and a rotatably driven member such as a body of display 17. The rotated member is not limited to the display member 17; it is only necessary that the member is a member rotatably housed in the housing 12, and configured to be rotated together with manipulation from outside the housing 12.
    The dial 13 is circular, and has in its peripheral part a scale indicating the time 13a. The dial 13 may be a digital display type dial showing the scale of time display through a liquid crystal display. The hands indicating the time 14 are constituted by at least one hour hand and a minute hand or an hour hand, a minute hand and a second hand.
    As shown in FIG. 1, a ring 16 is mounted on the housing 12 in the 3 o'clock direction of the wristwatch 11. The ring 16 is actuated in rotation from the outside of the housing 12. The rotation of the ring 16 is therefore communicated to a drive train (not shown) of movement 15 to, for example, rotate the minute hand, and adjust the position of the minute hand.
    The display member 17 is formed, for example, of synthetic resin, and is similar to a ring in a plan view, as shown in FIG. 1. The outer diameter of the display member 17 is larger than the diameter of the dial 13, and the inner diameter of the display member 17 is smaller than the diameter of the dial 13. The display member 17 is rotatably arranged in the circumferential direction of the dial 13. As shown in FIGS. 2 and 3, the inner peripheral portion of the display member 17 covers the surface of the peripheral portion of the dial 13.
    As shown in FIGS. 2 and 3, the thickness of the display member 17 increases progressively from the inner periphery to the outer periphery. The oblique and annular surface of the display member 17 thus formed is used as the display surface, and a display 17a is provided on this surface, as shown in FIG. 1. The display 17a is constituted, for example, graduations arranged at equal intervals along the peripheral direction of the display member 17 by printing or the like. By changing the relative positions of the display 17a moved to a predefined position by the rotation of the display member 17 and the hands indicating the time 14, it is possible to obtain a chronometer function for measuring a period time elapsed since the measurement of a predetermined time.
    As described above, it is desirable that the display member 17 has a ring-like shape in a plan view; however, this should not be interpreted restrictively. In the case where the display member 17 has a ring-like shape in a plan view, it may be of endless configuration in a plan view or a C-shaped configuration, with its mutually opposite ends. The display 17a of the display member 17 is not limited to graduations; it may also consist of a plurality of display regions divided by mutually different colors. Alternatively, the display 17a may consist of a plurality of plain display regions having symbols drawn therein (eg, a sun symbol indicating the time of day, and a moon symbol). indicating the time after sunset). In addition, instead of providing the stopwatch function, the display 17a may be that of a directional display allowing a simple measurement of direction.
    As shown in Figs. 2 to 4, the display member 17 has on its rear face an integrated gear part 18. The driven gear portion 18 has recess portions and ridge portions alternately arranged in the peripheral direction of the display member 17, and the ridge portions and the trough portions extend in the radial direction. of the display member 17. The driven gear portion 18 is outside the outer periphery of the dial 13, and surrounds this outer periphery.
    As shown in FIGS. 2 and 3, the housing 12 is formed by attaching, for example, a liquid-tight transparent cover 22 to a surface in the thickness direction of an annular housing band 21 and attaching a housing bottom 23 sealed to at the other surface in the direction of the thickness of the housing strip 21. It is desirable that the housing strip 21 is formed of a metal such as stainless steel or titanium.
    The transparent cover 22 is, for example, circular, and constitutes the front face of the timepiece 11. The transparent cover 22 consists of a transparent element, for example, a transparent glass; through it, it is possible to see the dial 13 and the display member 17. The caseback 23 constitutes the rear surface of the timepiece 11. The caseback 23 is made of metal, synthetic resin or the like. In figs. 2 and 3, numerals 24 and 25 respectively indicate annular seals held between the housing strip 21 and the transparent cover 22 and between the housing strip 21 and the housing base 23 to maintain the liquid tightness of the housing 12 .
    As shown in FIGS. 2 and 3, the housing strip 21 has an annular protuberance 26 projecting towards the interior space. The rear surface of the peripheral portion of the transparent cover 22 is held in contact with and supported by the annular protuberance 26. This annular protrusion 26 covers the surface of the outer peripheral portion of the display member 17. Thus, the 17 is retained by the dial 13 and the annular protuberance 26 so as not to move in the direction of the thickness of the timepiece 11. In addition, the inner peripheral surface 21a of the housing strip 21 , extending the rear face of the annular protuberance 26 without discontinuity and at right angles, is close to the outer peripheral surface of the display member 17, so that the display member 17 is held stationary in its direction radial.
    The housing strip 21 has a through hole 27 shown in FIGS. 2 and 3 in a position offset from the mounting position of the ring 16, for example, 2 hours. A pipe 28 is inserted into this through hole 27 to be attached to the housing 12. When both the housing strip 21 and the pipe 28 are made of metal, the pipe 28 is attached to the housing strip 21 by soldering. When at least one of the housing strip 21 and the pipe 28 is formed of synthetic resin, the pipe 28 is attached to the housing strip 21 with an adhesive. The pipe 28 extends in the radial direction of the display member 17.
    The pipe 28 has the shape of a floor cylinder having a large diameter portion 28a and a small diameter portion 28b. The small diameter portion 28b of this pipe 28 is passed through the through hole 27. The large diameter portion 28a of the pipe 28 is disposed outside the housing 12, the nearest end surface thereof. the small diameter portion 28b being kept in contact with the outer peripheral surface of the housing 12.
    The end portion of the small diameter portion 28b on the opposite side of the large diameter portion 28a protrudes inwardly of the housing 12. A pawl portion 29 is formed at the portion of the end of the small diameter portion 28b. According to a preferred variant, a plurality of pawls 29 are arranged and arranged side by side around the periphery of the pipe 28 as shown in FIG. 5.
    These pawl portions 29 are formed to extend along the direction in which the central axis P of the pipe 28 extends to a drive gear described below; in other words, they protrude while being tapered towards the central side of the housing 12. More specifically, each pawl portion 29 has a pair of oblique side surfaces 29a, and the distance between these side surfaces 29a is i.e., the width of the pawl portions 29 is progressively reduced.
    Therefore, each pawl portion 29 forms a triangular crest portion. Thus, the end portion of the small diameter portion 28b facing the interior of the housing 12 is arranged in a structure where triangular crest portions and triangular trough portions formed to be adjacent thereto in the peripheral direction of the pipe 28 are arranged alternately in the peripheral direction of the pipe 28.
    In the case where the pipe 28 is formed of metal, a machining is performed so as to leave cutting marks corresponding to the hollow portions at the end portion of the small diameter portion 28b. Therefore, the pawl portions 29 are formed between the adjacent cutting marks in the circumferential direction of the pipe 28. When forming the pawl portions 29 by machining on the pipe 28, the pipe 28 itself does not limit the the operational space, and the space around the pipe 28 constitutes the operational space; this results in a satisfactory machinability. When the pipe 28 is formed of synthetic resin, the pawl portions 29 are formed by molding this pipe 28.
    As far as it is tapered, the configuration of the pawl portions 29 is not limited to such a triangular implementation; for example, the vertices of the triangles may be rounded or the ratchet portions may take the form of isosceles trapezoids; furthermore, when the actuating element described below is actuated in only one direction, only one lateral surface of each pawl portion 29 may be obliquely formed to thereby be tapered.
    In FIG. 1, reference numeral 31 indicates an actuating element. The actuating element 31 is actuated from outside the housing 12 to move the display 17a; it moves together the display member 17, and the display member 17 is rotated by this joint movement. As shown in figs. 2 and 3, the actuating element 31 is preferably made of metal, and is equipped with a head portion 32 and a shaft portion 33.
    The head portion 32 is formed as a cap having a ring-shaped peripheral wall and an end wall closing one end of this peripheral wall. The depth and the internal diameter (the diameter formed by the inner peripheral surface of the peripheral wall) of this head 32 are greater than the entire length B of the large diameter portion 28a of the pipe 28 and the diameter formed by the peripheral surface outer part of large diameter 28a. A knurled portion for preventing slippage of the user's fingers as he manipulates said head portion 32 to rotate is provided on the outer peripheral surface of the peripheral wall of the head portion 32 by knurling.
    The shaft portion 33 protrudes integrally from the central portion of the rear surface of the end wall of the head portion 32, and this shaft portion 33 is longer than the entire length of the part of large diameter 28a. The profile of the distal end portion section 33a of the shaft portion 33 in the direction orthogonal to the axial direction of the shaft portion 33 is non-circular, for example, a D-shaped section as shown fig. 4. Therefore, the shaft portion 33 has a tiering 33b.
    The diameter of the outer peripheral surface of the portion other than the distal end portion 33a, i.e. the diameter of the portion from the origin of the shaft portion 33 to the distal end portion 33a is fixed and is slightly smaller than the inner diameter of the small diameter portion 28b of the hose 28. The aforesaid portion is longer than the entire length of the hose 28.
    The shaft portion 33 of the actuating member 31 is rotatable relative to the pipe 28 and is inserted so as to be movable in the axial direction of the pipe 28 (i.e. in the direction in which extends the central axis P of the pipe 28). Therefore, the head portion 32 of the actuating member 31 is disposed outside the housing 12 while covering the large diameter portion 28a of the pipe 28.
    Mounted on the distal end portion 33a of the shaft portion 33 is a drive gear 35 transmitting the rotation of the actuating member 31 to the display member 17. More specifically, the drive gear 35 has a clamping engagement hole 35a whose profile corresponds to the sectional section of the distal end portion 33a. After clamping said tight fitting hole 35a with the distal end portion 33a, a resilient ring 37 is mounted on an open groove in the outer peripheral surface of the distal end portion 33a, whereby the The drive gear 35 is held between the elastic ring 37 and the step 33b, and the distal end portion 33a is mounted to be prevented from rotating relative to the distal end portion 33a. The teeth 35b of the drive gear 35 are held in constant engagement with the driven gear portion 18 of the display member 17. That is, with the pushing and releasing operation of the actuating member 31 described below, the position where the drive gear 35 and the driven gear portion 18 are mutually meshing in the housing 12 moves in the direction radial of the display member 17; however, the meshing itself is maintained.
    The drive gear 35 has an engagement portion 36. The engagement portion 36 is engaged with and disengaged from the pawl portions 29 as the actuation 31 reciprocates in the direction in which the central axis P extends. According to a preferred variant, the engagement portion 36 projects from a side surface of the drive gear 35. So that the engagement portion 36 can not protrude beyond the lateral surface of the drive gear 35, it is possible to provide a circular recess at the central portion of the drive gear 35, the engagement portion 36 protruding from the lower surface thereof.
    In conjunction with the pawl portions 29, the engagement portion 36 forms stop means S disposed within the housing 12. Due to these stop means S, the rotation of the portion of head 32 is prevented in the state where the actuating element 31 is disposed in a first position described below, and the rotation of the head portion 32 for a joint movement of the display member 17 is permitted in the state where the actuating element 31 is disposed in a second position described below.
    It is desirable that the engagement portion 36 is integral with the drive gear 35. In this case, the engagement portion 36 and the drive gear 35 may be formed by molding. monoblock metal obtained by pressing. However, so that they can be produced at lower cost, in the present embodiment, the drive gear 35 having the engagement portion 36 is formed integrally through a injection molding of a synthetic resin such as polycarbonate or DURACON. When the drive gear 35 is formed of synthetic resin and the engagement portion 36 is formed of metal, they may be formed integrally through insert molding of the engaging 36 in the drive gear 35.
    As shown in FIG. 6, in a preferred embodiment, a plurality of engagement portions 36 are provided, more specifically, in an identical number to the pawl portions 29. These engagement portions 36 are arranged side by side all around the periphery of the housing. drive gear 35.
    The engagement portions 36 are tapered toward the hose 28. More specifically, each engagement portion 36 has a pair of oblique side surfaces 36a, and the reciprocal distance between the side surfaces 36a, that is, that is, the width of the engagement portions 36 is progressively reduced.
    Therefore, each engaging portion 36 takes the form of a triangular crest portion. Thus, on the lateral surface of the drive gear 35 disposed in the housing 12, there are alternately arranged in the circumferential direction, the triangular crest portions constituting the engagement portions 36, and hollow portions. triangular formed between the ridge portions near the drive gear 35 in the peripheral direction. The side surfaces 36a of the engagement portions 36 may be engaged with and disengaged from the side surfaces 29a of the pawl portions 29.
    As far as it is tapered, the configuration of the engagement portions 36 is not limited to the triangular configuration; for example, the vertices of the triangles may be rounded or the pawl portions may be formed as isosceles trapezoids; furthermore, when the rotational actuation of the actuating element 31 is only in one direction, only a lateral surface of each engaging portion 36 may be obliquely formed to thereby be tapered.
    The shaft portion 33 of the actuating element 31 has, at its intermediate portion in the longitudinal direction, an annular mounting groove 38 continuous in the circumferential direction. When snug fit with this mounting groove 38, a ring-like liner 39 is mounted to protrude out of the outer peripheral surface of the shaft portion 33. The liner 39 is formed of a material capable of elastic deformation such as synthetic rubber or synthetic resin. This liner 39 is held between the pipe 28 and the shaft portion 33 inserted therein while being elastically deformed. Therefore, the gasket 39 ensures the seal between the pipe 28 and the shaft portion 33.
    The actuating element 31 can move between a first position and a second position by being displaced in the direction in which the central axis P of the pipe extends. The first position and the second position are defined. so as to be offset relative to each other in the direction in which the central axis P of the pipe 28 extends, in the radial direction of the display member 17. Normally, the element Actuation 31 is disposed in the first position shown in FIG. 2, and the depressed actuating element 31 is disposed in the second position shown in FIG. 3.
    The first position is the retaining position of the actuating element 31 and the display member 17 so that they can not be involuntarily rotated. The second position is the position where the user or the like voluntarily actuates the head portion of the actuating element 31 in rotation to jointly move and turn the display member 17.
    The actuating element 31 is retained in the first position while it is pressed outwardly of the housing 12 by a plating element, for example, a helical spring 40. The coil spring 40 is maintained in a compressed state between the wall portion forming the border between, for example, the large diameter portion 28a and the small diameter portion 28b and the end wall of the head portion 32. The coil spring arrangement 40 n is not limited to that described above. For example, it is also possible to maintain the coil spring 40 in a compressed state between the end surface of the pipe 28 opposite the end wall of the head portion 32 and the end wall of the head portion. 32. In addition, it is also possible to arrange the coil spring 40 so as to surround the outer periphery of the large-diameter portion 28a of the pipe 28, and to maintain the coil spring 40 in a compressed state between the outer side surface 21b of the housing strip 21 and the end wall of the head portion 32.
    In the timepiece 11 described above, the stop means S are arranged in the housing 12, so that the stop means S are not exposed to human perspiration, moisture in the atmosphere, dust, etc. outside the housing 12. Therefore, there is no fear of corrosion of the stop means S, and it is possible to improve its weather resistance.
    The stop means S do not use the head portion 32 of the actuating element 31 located outside the housing 12, so that the head portion 32 does not see its increased diameter in Because of the stop means S. Thus, it is possible to contribute to a reduction in the thickness of the housing 12.
    The engagement portions 36 of the stop means S are integral with the drive gear 35, and the catch portions 29 of the stop means S are formed using the end portion of the hose. 28 in the housing 12. The pipe 28 is a component supporting the actuating element 31, and the driving gear 35 is a component transmitting the rotation of the actuating element 31 to the housing member. display 17. Thus, no special component is required to form the stop means, and it is possible to form the stop means S without increasing the number of components.
    In addition, the pawl portions 29 of the stopping means are formed using the thickness of the end portion of the pipe 28, and do not protrude from the outer periphery of the end portion of the pipe 28. in its radial direction. Therefore, it is not necessary to provide, around the outer periphery of the end portion of the pipe 28 projecting inwardly of the housing 12, a space in which the pawl portions 29 and the engagement portions 36 of the stop means S to be brought into mutual engagement. Or, if the engaging portion 36 is of a greater thickness than the end portion of the pipe 28, and protrudes out of the outer periphery of the end portion of the pipe 28, the overshoot dimension is small . Thus, the space occupied in the housing 12 the stop means S preventing an incorrect operation of the display member 17 in the housing 12 relative to the thickness direction is advantageously low. Thus, this implementation is appropriate to promote a reduction in thickness of the housing 12.
    In addition, in the implementation in which the engagement portions 36 protrude out of the side surface of the drive gear 35, the diameter of the drive gear 35 is not increased. .
    That is, in the case where the engaging portions 36 are formed in the width of the drive gear 35, the drive gear 35 needs a portion to be snug fit. with the outer periphery of the end portion of the pipe 28 on which the pawl portions 29 are formed, and teeth 36b engaged with the driven gear portion 18 of the display member 17 are formed on the face this part. As a result, the diameter of the drive gear 35 is increased due to the above-mentioned part.
    On the other hand, by providing that the engagement portions 36 protrude out of the side surface of the drive gear 35, it is not necessary to provide a portion on the drive gear 35 for to be nested by clamping with the outer periphery of the end portion of the pipe 28, so that the drive gear 35 does not see its increased diameter. Thus, the arrangement space for the drive gear 35 in the housing 12 with respect to the thickness direction of the housing 12 may be small, which contributes to a reduction in the thickness of the housing 12.
    In the timepiece 11 described above, in the state other than that in which the display member 17 is actuated in rotation, the actuating element 31 is pressed towards the outside of the housing 12 by the plating force of the coil spring 40, and is retained in the first position shown in FIG. 2. In this state, the plurality of engaging portions 36 protruding out of the side surface of the drive gear 35 is engaged with the plurality of pawl portions 29 of the hose 28. The engagement is effected by the side surfaces 29a of the pawl portions 29 and the side surfaces 36a of the engaging portions 36 engaging each other in the circumferential direction of the pipe 28.
    The pipe 28 is fixed to the housing 12, so that as a result of the engagement (meshing according to the present embodiment), the pipe 28 serves as a stop, preventing rotation of the drive gear 35, and that of the actuating element 31 which is mounted this gear. Thus, although the drive gear 35 and the driven gear portion 18 of the display member 17 are constantly meshing with each other, it is possible to prevent any involuntary rotation of the display member 17 and any idle rotation of the actuating element 31 when, for example, the timepiece is worn.
    In this way, any involuntary rotation of the actuating element 31 is prevented when it is arranged in the first position, and any malfunction of the display member 17 is suppressed, so that It is possible to eliminate any unintentional disturbance of various functions (for example, chronometer function) determined by the relationship between the display 17a of the display member 17 and the display scale of the clock 13a of the dial 13 or the time display hands 14.
    During the rotation of the display member 17, the head portion 32 is pinched, and the actuating member 31 is depressed at the second position shown in FIG. 3 against the helical spring 40. This driving operation is stopped when the peripheral wall of the head portion 32 comes into contact with the outer lateral surface 21b of the housing strip 21. By the movement of the gear of With the drive 35 accompanying this depression, the engagement portions 36 separate from the ratchet portions 29.
    This means that a state is reached in which the stop means S allow the rotation of the head portion 32 of the actuating element 31, and in which the rotation of the head portion 32 is possible. . Thus, with rotational actuation of the head portion 32, the rotation of the actuating member 31 is transmitted to the display member 17 through meshing between the drive gear 35 and the drive gear portion 18, which allows a desired rotational movement to be communicated to the display member 17. In the present embodiment, the actuating member 31 can be rotated at the clockwise and counterclockwise.
    When the display member 17 is thus rotated, and the fingers are released from the head portion 32, the actuating member 31 is pushed outwardly of the housing 12 by the force of plating the coil spring 40, and is disposed in the first position. With this, the stop means S operates. That is, the engagement portions 36 are engaged with the pawl portions 29, and the actuating member 31 and the display member 17 are held in the state where their rotation involuntary is prevented.
    As described above, the pawl portions 29 are tapered toward the drive gear 35, and the engaging portions 36 are tapered toward the hose 28. In addition, the pair of surfaces the lateral portions 29a of the pawl portions 29 and the pair of side surfaces 36a of the engaging portions 36 are both oblique, and the distance between the side surfaces 29a and the distance between the side surfaces 36a are respectively reduced. . Therefore, when the engagement portions 36 are to be engaged with the pawl portions 29, it is possible to prevent the engagement portions 36 from being caught and wedged by the pawl portions 29 during the movement of the actuating element 31 to the first position. Thus, it is possible to easily engage engagement portions 36 with ratchet portions 29.
    In addition, as described above, the plurality of pawl portions 29 are disposed side by side around the periphery of the pipe 28, and the engaging portions 36, in number identical to the pawl portions 29. are disposed on the drive gear 35 side by side around the periphery of the gear. Therefore, in the state where the actuating element 31 is disposed in the first position, more pawl portions 29 and more engaging portions 36 are engaged with each other, so that the stopping means S exhibit a high performance in terms of prevention of involuntary rotation of the actuating element.
    In addition, an excessive rotational actuating force may be improperly applied to the head portion 32 of the actuating member 31 disposed in the first position. In this case, the actuating member 31 is moved toward the center of the housing 12 while generating a slippage between the oblique side surfaces 29a of the pawl portions 29 and the oblique side surfaces 36a of the engaging portions 36 held in position. contact between them. With this, the engagement portions 36 are disengaged from the pawl portions 29, so that there is no concern that excessive restraint may be applied to the ratchet portions 29 and the parts of engagement 36 constituting the stop means S and thus damage them.
    At the same time, immediately after the engagement portions 36 are disengaged from the pawl portions 29, the actuating member 31 is moved out of the housing 12 by the coil spring 40 and thereby the engaging parts 36 are brought into engagement with the pawl portions 29. With this, a tactile sensation is imparted to the operator who can thus perceive any error in the manipulation of the actuating element 31.
    As described above, according to the first embodiment, it is possible to provide a timepiece 11 in which it is possible to improve the weather resistance of stop means S preventing any involuntary rotation of the display member 17 in the housing 12 while, for example, the timepiece is worn, and any unintentional idle rotation of the actuating member 31 jointly moving the display member 17 by a rotation operation outside the housing 12, and wherein the head portion 32 of the actuating element 31 is not enlarged due to the stop means S.
    权利要求:
    Claims (8)
    [1]
    1. Timepiece (11) comprising:a housing (12) having a through-hole (27),a rotatably driven member having a driven gear portion (19) and rotatably housed in the housing (12);a pipe (28) attached to the through hole (27);an actuating member (31) having a head portion (32) for rotational manipulation disposed outside the housing and a shaft portion (33) rotatable relative to the pipe (28) and inserted with able to move in the direction in which the central axis of the pipe (28) extends and configured to be moved between a first position and a second position defined by a positional shift in the direction in which it extends. central axis;a thrust member urging the actuating member so that the actuating member (31) is disposed in the second position;a drive gear (35) mounted on an end portion of the shaft portion (33) projecting out of the housing (12) and stably maintained in mesh with the driven gear portion (19); andstopping means (S) arranged inside the housing (12) and preventing rotation of the head portion (32) when the actuating element (31) is disposed in the first position and allowing the rotation the head portion (32) for a joint displacement of the rotatably driven member when the actuating member (31) is disposed in the second position.
    [2]
    The timepiece (11) of claim 1, wherein the stop means (S) comprises: a tapered pawl portion (29) formed at an end portion of the hose (28) facing inside the housing (12) and projecting toward the drive gear (35) along the direction in which the central axis extends; andan engaging portion (36) provided on the drive gear (35) and configured to engage and disengage the ratchet portion (29) as the actuating member (31) back and forth between the first position and the second position.
    [3]
    The timepiece (11) of claim 2, wherein the pawl portion (29) has a pair of side surfaces (29a) engaged with the engaging portion (36); and these lateral surfaces (29a) are oblique and have their reciprocal distance progressively reduced.
    [4]
    The timepiece (11) of claim 2 or 3, wherein the engaging portion (36) has a pair of side surfaces (36a) engaging the ratchet portion (29); and these side surfaces (36a) are oblique and have their reciprocal distance progressively reduced, the engagement portion being tapered toward the pipe (28).
    [5]
    The timepiece (11) of claim 4, wherein a plurality of pawl portions (29) are provided side by side around the periphery of the pipe (28); and the same number of engaging portions (36) as pawl portions (36) are provided on the drive gear (35) side by side all around the periphery of this gear.
    [6]
    6. Timepiece (11) according to claim 5, wherein the engaging portion (36) is integral with the drive gear (35).
    [7]
    The timepiece (11) of claim 6, wherein the engaging portion (36) projects from a side surface (36a) of the drive gear (35).
    [8]
    8. Timepiece (11) according to one of claims 1 to 7, wherein a dial (13) shaped disc is housed in the housing (12); and the rotatably driven member is a ring-shaped display member (17) rotatably disposed along the outer circumferential edge of the dial (13).
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    同族专利:
    公开号 | 公开日
    CN105404131A|2016-03-16|
    JP6367059B2|2018-08-01|
    CH710111B1|2020-04-30|
    JP2016057157A|2016-04-21|
    US20160070232A1|2016-03-10|
    CN105404131B|2019-11-08|
    US9581968B2|2017-02-28|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014183403A|JP6367059B2|2014-09-09|2014-09-09|clock|
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