• 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 purpose is to propose a movement in which one can easily adjust, at the desired level, a click sensation produced during an actuation of a winding stem and whose size can be decreased. A movement (10) comprises a winding stem (41) which is movable in an axial direction (L); a pull tab (50) which pivots on a first pivot axis (P) according to the movement of the winding stem (41) and which has a plurality of recessed portions (54a to 54c) which are arranged side by side along a circumferential direction about the first pivot axis (P); an engagement lever (61) having an engaging portion (63) that engages the recessed portions (54a-54c) and is pivotally mounted on a second pivot axis (Q) ; and a return portion (62) which recalls the engagement lever (61) to the recessed portions (54a-54c).
    公开号:CH713526A2
    申请号:CH00245/18
    申请日:2018-03-01
    公开日:2018-09-14
    发明作者:Hayakawa Kazuki
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a movement and a timepiece. 2. Description of the Related Art [0002] A switching mechanism, which switches between a normal operation mode of the hands and a correction mode for performing a time setting, a date adjustment and the like, is mounted in a timepiece. The switching mechanism comprises a winding stem which is rotatable about an axis and displaceable in an axial direction by means of a traction maneuver or a pushing maneuver, a sliding pinion having a coupling hole in which the winding stem is inserted, a puller which is operated by a movement of the winding stem and which causes the sliding pinion to mesh with an adjusting wheel or analoque and a rocker.
    The switching mechanism is designed so that the positioning of the winding stem is achieved and a click sensation is given to a user when the user performs a traction maneuver or a thrust maneuver to switch between the trends. For example, Patent Document 1 (JP-A-2002-31,691) discloses a structure which includes a moderation shaft which is provided in the pull tab, as well as a moderation spring which is provided in a rear presser, and wherein the moderation shaft and the moderation spring engage with each other by a restoring force due to deformation of the moderation spring, the clicking sensation being given at the moment of pulling of the winding stem and at the moment of a push of the winding stem. The moderating spring is cantilevered and a plurality of hollow portions for receiving the moderator shaft are formed side by side in the moderator spring, along the direction in which the moderator spring extends. As the pull tab is moved, the moderator shaft moves over a protruding portion between the recessed portions while deflecting and deforming the moderation spring. Therefore, the click sensation occurs with the operation of the winding stem engaging the zipper.
    However, in the arrangement disclosed in the patent document 1, the recessed portions for receiving the moderation shaft are disposed side by side along the direction in which the moderating spring extends. As a result, the intensity of the force required for the moderator shaft to deflect and deform the moderation spring varies depending on the engagement position between the moderation shaft and the moderation spring. Specifically, when the position of the recessed portion where the moderation shaft enters is near a distal end of the moderation spring, the force required to cross a ridge between two adjacent recesses is less. Consequently, since the click sensation at the time of a winding stem maneuver varies depending on the position of the winding stem, it may be difficult to adjust, at the desired amplitude, the click sensation produced in the winding stem. moment of actuation of the winding stem.
    In addition, the moderation spring is engaged with the moderation shaft by the restoring force due to the deformation of the moderation spring itself. Therefore, the moderation spring must be long enough to be deflected and deformed, and the location where to arrange the moderation spring is limited so that the recessed portion is returned to the moderation tree. Therefore, there may be constraints on the relative disposition of the motion configuration components, including the moderation spring, and it may be difficult to reduce the size of the motion.
    SUMMARY OF THE INVENTION
    Therefore, an object of the present invention is to provide a movement and a timepiece that can easily adjust, at a desired level, a click sensation produced at the time of actuation of a rod of winding and whose sizes can be reduced.
    According to the present invention, there is provided a movement comprising a winding stem which is movable in an axial direction; a pull tab which pivots on a first pivot axis according to the movement of the winding stem and which has a plurality of recessed portions which are arranged side by side along a circumferential direction about the first pivot axis; an engagement lever which has an engaging portion which penetrates the recessed portions and which is pivotally mounted on a second pivot axis; and a return portion that recalls the lever for engaging the recessed portions.
    According to the present invention, the recessed portions belonging to the pull tab are disposed side by side along a circumferential direction about the first pivot axis. Therefore, the recessed portions belonging to the pull tab move along the circumferential direction about the first pivot axis as the pull tab pivots on the first pivot axis in accordance with the movement of the winding stem. Therefore, the position of the place where the engaging portion of the engagement lever engages and the recessed portion into which the engagement portion engages is substantially constant regardless of the pivoting position (the angular position) of the pull tab when viewed from the second pivot axis which is the pivoting center (axis) of the engagement lever. Therefore, the force required to rotate, from the state where the engagement portion enters a recessed portion, the engagement lever which is recalled by the return portion is the same regardless the recessed portion into which the engagement portion penetrates. Therefore, it is possible to suppress that the click sensation produced when an actuation of the winding stem varies depending on the position of the winding stem and it is possible to easily adjust to the desired level (at the desired amplitude), the click sensation produced when the winding stem is actuated.
    In addition, as the lever for engagement is recalled by the return portion, it is possible to increase the degree of freedom on the form and layout arrangement of the lever for engagement, compared to the constitution of the prior art in which the engagement lever is itself deflected and deformed to generate the return force. Therefore, it is possible to increase the degree of freedom on the relative layout of the motion configuration components and it is possible to reduce the size of the movement.
    In the movement, it is preferable that the return portion is in one piece with the lever for engagement.
    According to the present invention, as a single element can form the lever for engagement and the return portion, it is possible to reduce the number of components of the movement and reduce the cost of manufacture, compared to the constitution in which the engagement lever and the return portion are separate components.
    In the movement, it is preferable that the return portion is formed so as to be distinct from the lever for engagement (non-integral with the lever for engagement).
    According to the present invention, as the return portion and the engagement lever can be formed as separate elements, it is possible to increase the degree of freedom on the location in arrangement of the return portion, compared to the constitution in which a single element forms the lever for engagement and the return portion. Therefore, it is possible to increase the degree of freedom on the relative layout of the motion configuration components.
    In the movement, it is preferable that the movement further comprises a pressing member which pushes the pull tab, while the return portion is integral with the pressing member.
    According to the present invention, since only one element can form the pressing element and the return portion, it is possible to reduce the number of components of the movement and reduce the cost of manufacture, compared to the constitution in which the pressing element and the return portion are formed as separate elements.
    In the movement, it is preferable that the return portion is formed to be deflected and deformed, and that the movement further comprises an eccentric rod which abuts against the return portion and which is able to adjust the quantity of which the return portion is deflected and deformed.
    According to the present invention, by adjusting by means of the eccentric rod the amount of which the return portion is deflected and deformed, one can adjust the force required to rotate the lever for engagement recalled by the return portion . Therefore, it is possible to further adjust, easily, the click sensation produced at the time of actuation of the winding stem.
    In the movement, it is preferable that the lever for engagement is disposed in the same plane as the pull tab.
    According to the present invention, it is possible to reduce the space occupied by the pull tab and the engagement lever, compared to the constitution in which the engagement lever is arranged to overlap the pull tab. Therefore, it is possible to decrease the size of the movement.
    A timepiece of the present invention comprises the movement.
    According to the present invention, it is possible to easily adjust, at the desired level, the click sensation produced during the actuation of the winding stem and to propose a timepiece whose size can be decreased.
    According to the present invention, it is possible to easily adjust, at the desired level, the click sensation produced during an actuation of the winding stem and to propose a movement and a timepiece whose sizes can to be diminished.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0023]
    Fig. 1 is an external view of a timepiece according to a first embodiment.
    Fig. 2 is a plan view of the rear side of a movement according to the first embodiment.
    Fig. 3 is a plan view of a configuration of a part of the movement according to the first embodiment as seen from the back side.
    Fig. 4 is an explanatory view of the operation of a switching mechanism of the first embodiment and is a plan view of a configuration of a portion of the switching mechanism as seen from the back side.
    Fig. 5 is an explanatory view of the operation of the switching mechanism of the first embodiment and it is a plan view of a configuration of a portion of the switching mechanism as seen from the back side.
    Fig. 6 is an explanatory view of the operation of the switching mechanism of the first embodiment and is a plan view of a configuration of a portion of the switching mechanism as viewed from the back side.
    Fig. 7 is a plan view of a configuration of a portion of the movement according to an alternative example of the first embodiment as seen from the back side.
    Fig. 8 is a plan view of the rear side of a movement according to a second embodiment.
    Fig. 9 is a plan view of a configuration of a portion of the motion according to the second embodiment, as seen from the back side.
    Fig. 10 is a plan view of a configuration of a portion of a movement according to a first exemplary variation of the second embodiment, as seen from the back side.
    Fig. 11 is a plan view of a configuration of a portion of a movement according to a second exemplary variant of the second embodiment, as seen from the back side.
    Fig. 12 is a plan view of a configuration of a portion of a movement according to a third exemplary variant of the second embodiment as seen from a back side.
    DESCRIPTION OF THE EMBODIMENTS
    In what follows, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a mechanical timepiece will be described by way of example.
    First Embodiment [0026] FIG. 1 is an external view of a timepiece according to a first embodiment. As shown in fig. 1, a timepiece 1 of the embodiment is obtained by placing a movement 10, a dial 4 having graduations to indicate time-related information or the like, various needles (hour hand 5, minute hand 6 and seconds hand 7), and the like, in a timepiece box 3 comprising a box lid (not shown) and an ice cream window 2. A window of the day 4a, which discovers a date character 16 which is the date one day, forms an opening in the dial 4. Therefore, the timepiece 1 can display the time and date. The hour hand 5, the minute hand 6 and the second hand 7 rotate about a central axis O. FIG. 2 is a plan view of a rear side of the movement according to the first embodiment.
    As shown in FIG. 2, the movement 10 comprises a plate 11 forming a base, a date wheel 15 which is disposed on the rear side of the plate 11, a date correction mechanism 20 which is incorporated in the plate 11, a front wheel (no shown), a rear wheel 30 and a switching mechanism 40. The dial 4 (see Fig. 1) is disposed on the rear side of the plate 11.
    The date wheel 15 is disposed between the dial 4 and the plate 11. The date wheel 15 rotates about the central axis O. The date character 16 (see Fig. 1) is marked separately. on a surface facing the rear side of the date wheel 15.
    The date correction mechanism 20 is incorporated on the rear side of the plate 11. The date correction mechanism 20 includes a date correction wheel 21, a date correction transfer wheel 22, a wheel adjustment 23, and a setting wheel lever 24. The date correction wheel 21 meshes with the date wheel 15. The date correction transfer wheel 22 meshes with the date correction wheel 21.
    The adjustment wheel lever 24 is pivotally mounted about a shaft portion 25 provided in the platen 11. The adjustment wheel lever 24 includes a lever main body 27 which has an end forming a base supported by the shaft portion 25, and a spring portion 28 which extends from the base portion of the main lever body 27 and is integrally therewith. The base portion of the lever main body 27 is provided at a position overlapping on the date wheel 15 in a plan view obtained when looking from the axial direction of the central axis O (simply called "in a plan view " in the following). The main lever body 27 extends from the base end to the inside of the movement 10. The main lever body 27 extends with a substantially constant width. The adjusting wheel 23 is supported on a distal end of the lever main body 27, so as to be rotatable. The spring portion 28 extends along a circumferential direction about the central axis O. A protruding portion 28a, which is bulged outwardly in a radial direction (referred to simply as "radial direction" in the following ) orthogonal to the central axis O, is formed at the distal end of the spring portion 28. The spring portion 28 is disposed within a groove 11a formed in the plate 11 and the portion protruding 28a is in abutment against a surface facing the inside of the groove 11a of the plate 11, in the radial direction. Therefore, the spring portion 28 recalls the lever main body 27 about the shaft portion 25 of the platen 11, clockwise in FIG. 2.
    The adjusting wheel 23 is biased towards the outside of the movement 10, by a restoring force of the spring portion 28 of the adjusting wheel lever 24. The adjusting wheel 23 meshes with the correction transfer wheel 22, in the inner to outer direction of the movement 10. The main lever body 27 of the adjusting wheel lever 24 rotates around the shaft portion 25, so that the adjusting wheel 23 ceases to mesh with the date correction transfer wheel 22 and may be remote from this date correction transfer wheel 22.
    The front wheel (not shown) comprises a second wheel to which the seconds hand 7 (see Fig. 1) is secured, a barrel wheel (both not shown), etc.
    The rear wheel 30 is incorporated on the rear side of the plate 11. The rear wheel 30 includes a day of the minute wheel 31, a hour wheel 32 and a minute wheel (not shown). The daytime minute wheel 31 rotates due to the rotation of the minute wheel. The daytime minute wheel 31 is disposed between the central axis O and the adjusting wheel 23, in a plan view. The hour wheel 32 rotates due to the rotation of the day minute wheel 31. The hour wheel 32 is disposed coaxially with the center axis O. The hour wheel 5 (see Fig. 1) is subject to at the hour wheel 32. The minute hand 6 (see Fig. 1) is subject to the minute wheel.
    The switching mechanism 40 comprises a winding stem 41, a sliding pinion 43 (or clutch wheel), a pull tab 50, a click spring 60, a latch 70, and a rear presser 80.
    The winding stem 41 is supported in a winding stem guide hole 12 formed in the plate, so as to be rotatable about an axis L and is movable in the direction of the axis L. L L-axis is orthogonal to the central axis O. The L-axis is provided in a position overlapping the adjusting wheel 23 in a plan view. The winding stem 41 is formed so as to have a narrowed portion 41a (thinner portion) by means of a shoulder orthogonal to the axis L. In addition, the winding stem 41 is provided with a winding pinion 45. winding 45 is provided at a position closer to the central axis O than the constricted portion 41a. The winding pinion 45 is mounted to be rotatable with respect to the winding stem 41 and movable relative to the winding stem 41 in the direction L. The winding pinion 45 meshes with a round-hole wheel (not shown ).
    The winding stem 41 is inserted into the sliding pinion 43 and this sliding pinion 43 is disposed coaxially with the axis L. The sliding pinion 43 is disposed in a position closer to the central axis O that the pinion of winder 45. The sliding pinion 43 is mounted so as not to be rotatable with respect to the winding stem 41 and to be displaceable relative to the winding stem 41 in the direction L. The sliding pinion 43 is arranged in such a way as to to be mutually displaceable in the direction of the axis L, relative to the winding stem 41, between a state of engagement with the winding pinion 45 in the inner-to-outer direction of the movement 10 and a state of engagement with the adjusting wheel 23 in an outside direction towards the inside of the movement 10.
    The pull tab 50 is carried by a first support shaft 11b projecting from the plate 11 and is mounted so as to be pivotable about a first pivot axis P. The first pivot axis P is arranged to be parallel to the central axis O. The pull tab 50 comprises a central portion 51 which is carried by the first support shaft 11b, and a head 52 and a tail 53 extending from the portion The central portion 51 is disposed adjacent to the winding stem 41 in a circumferential direction about the central axis O. The head 52 of the pull tab 50 has an oval shape. The head 52 of the pull tab 50 is disposed in the constricted portion 41a of the winding stem 41. The pull tab 50 pivots around the first pivot axis P so that the head 52 is moved following the movement of the winding stem 41 according to the direction L.
    FIG. 3 is a plan view of a configuration of a portion of the movement according to the first embodiment as viewed from a back side.
    As shown in FIG. 3, the shank 53 extends from the central portion 51 to a side opposite the head 52 relative to the central portion 51. A distal end of the shank 53 is formed so that a width increases gradually to The tail 53 has several (three in the embodiment) recessed portions 54a to 54c, and an engagement projection 55.
    The recessed portions 54a to 54c are a first recessed portion 54a, a second recessed portion 54b and a recessed third portion 54c. Each of these recessed portions 54a to 54c is formed at a distal end edge of the shank 53. The recessed portions 54a to 54c follow each other side by side in the circumferential direction about the first pivot axis P. The hollow portions 54a to 54c follow each other in the inner to the outer direction of the movement in the following order: first recessed portion 54a, second recessed portion 54b and the third recessed portion 54c. Each of the hollow portions 54a to 54c is open on a side opposite to the winding stem 41 in a plan view. A first smooth bump 56a is formed between the first recessed portion 54a and the second recessed portion 54b. A second hump 56b, smooth, is formed between the second recessed portion 54b and the third recessed portion 54c.
    The engagement projection 55 is formed at a position closer to the interior of the movement than the recessed portions 54a-54c. The engagement projection 55 projects inwardly of the movement 10. The engagement projection 55 cooperates with the latch 70.
    The click spring 60 is disposed in the same plane as the pull tab 50, so as to be on the side. In other words, the click spring 60 is arranged to overlap the pull tab 50 in a view obtained when viewed from the radial direction. The click spring 60 includes an engagement lever 61 which is pivotally mounted relative to the platen 11 (see Fig. 2) and a return portion 62 which recalls the lever for setting The engagement lever 61 is carried by a second support shaft 11c projecting from the platen 11 and is pivotally mounted on a second pivot axis Q. The second pivot axis Q is disposed parallel to the first pivot axis P. The second pivot axis Q is disposed on a side opposite to the first pivot axis P, with respect to the tail 53 of the pull tab 50. The engagement lever 61 extends towards the tail 53 of the pull tab 50. The distal end of the engagement lever 61 is an engaging portion 63 which enters the recessed portions 54a-54c of the pull tab 50.
    The return portion 62 recalls the engaging lever 61 to the recessed portions 54a to 54c of the pull tab 50 so that the engaging portion 63 of the engaging lever 61 engages the portions 54a to 54c of the pull tab 50. The return portion 62 is integral (monoblock) with the engagement lever 61. The engagement portion 62 extends from the engagement lever 61, in a different direction of the engaging lever 61. In the embodiment in question here, the return portion 62 extends from a base end portion of the engagement lever 61 towards an opposite side of the tail 53 of the pull tab 50 relative to the second pivot axis Q. As shown in FIG. 2, the return portion 62 extends along a circumferential direction about the central axis O. The return portion 62 is shaped to be deflected and deformed. A protruding portion 62a, which is outwardly bulged in the radial direction, is formed at the distal end of the biasing portion 62. The biasing portion 62 is disposed in the groove 11a formed in the platen 11 and the protruding portion 62a abuts against an inward facing surface of the groove 11a of the plate 11, in the radial direction.
    As shown in FIG. 3, the latch 70 is disposed in the same plane as the pull tab 50, so as to be side. In other words, the latch 70 is arranged to overlap the pull tab 50 when viewed from the radial direction. The latch 70 is pivotally mounted on a third pivot axis R with respect to the plate 11 (see Fig. 2). The third pivot axis R is arranged to be parallel to the first axis R The third pivot axis R is disposed on a side opposite to the first pivot axis P, relative to the tail 53 of the pull tab 50. The latch 70 comprises a head 71, several (three in the embodiment in question here) recessed portions 72a to 72c for engagement, and an engagement rod 73.
    The head 71 of the latch 70 is disposed in a constricted portion 43a (thinner portion) of the sliding pinion 43. The latch 70 pivots on the third pivot axis R and moves the head 71, thus moving the sliding pinion 43 on the winding stem 41, in the direction of the axis L.
    The engaging recessed portions 72a to 72c are formed between the head 71 and the base end of the latch 70. The engaging recessed portions 72a to 72c are a first recessed portion for engagement with each other. in engagement 72a, a second engagement recessed portion 72b and a third engaged recess portion 72c. The engaging recessed portions 72a to 72c are disposed side by side in an order which from the root end to the head 71 of the latch 70 is as follows: first engaging recessed portion 72a, second recessed portion for engaging 72b and third recessed portion for engaging 72c. Each of the engaging recessed portions 72a-72c is open outwardly of the movement 10. A first, smooth engagement tang 74a is formed between the first engaging recessed portion 72a and the second portion. recessed for engaging 72b. A second, smooth engagement grapple 74b is formed between the second engaging recessed portion 72b and the third engaging recessed portion 72c. The engagement projection 55 of the pull tab 50 may be engaged with each of the engaging recess portions 72a to 72c.
    The engagement rod 73 is disposed between the head 71 and the base end of the latch 70. The engagement rod 73 projects from the opposite side to the platen 11, in the axial direction. of the central axis O. The engagement rod 73 is provided at a position closer to the outside of the movement 10 than is the lever main body 27 of the adjustment wheel lever 24.
    As shown in FIG. 2, the rear presser 80 presses, in the direction of the plate 11, the movement configuration components 10 disposed on the rear side of the plate 11. The rear presser 80 is disposed on the opposite side to the plate 11, with respect to the pull tab 50, the click spring 60 and the latch 70. The rear presser 80 comprises a base 81 fixed to the plate 11, a puller presser 82 extending from the base 81, a spring latch 83 and a rocker press 84.
    The base 81 extends along a circumferential direction about the central axis O and is arranged to overlap the click spring 60 in a plan view.
    The puller press 82 extends from an end 81a, on the side closer to the winding stem 41, on the base 81, to a position overlapping on the central portion 51 of the A distal end of the puller presser 82 has a Y shape so as to avoid the first support shaft 11b of the platen 11 in a plan view. The distal end of the puller presser 82 pushes the pull tab 50 toward the plate 11.
    The flip-flop spring 83 extends from an intermediate portion of the base 81, towards the winding stem 41. A base end of the flip-flop spring 83 is provided in the vicinity of the third axis. The rocker spring 83 extends, with a substantially constant width, along a direction orthogonal to the direction of the axis L. The rocker spring 83 pushes the rocker 70 towards the plate 11 In addition, the distal end of the flip-flop spring 83 abuts against the engagement rod 73 of the flip-flop 70, in the inner to outer direction of the movement 10. Therefore, the flip-flop spring 83 recalls the flip-flop 70 in a clockwise direction in FIG. 2, around the third pivot axis R.
    The latch presser 84 is disposed between the puller presser 82 and the latch spring 83 in a plan view. The latch presser 84 extends from one end 81a of the base 81 to a position overlapping the head 71 of the latch 70. A distal end of the latch presser 84 is formed to be wider. in width than the base end. The distal end of the rocker presser 84 pushes the rocker 70 towards the plate 11.
    An operation of the switching mechanism 40 will be described in the following. Further, in the following description, the "clockwise" is clockwise when the movement 10 is seen from the back side (in other words, the direction of the hands of the watch). a watch on Figs 2 and 3). The same goes for the counterclockwise direction.
    As shown in FIG. 3, in the state where the winding stem 41 is in the position (called "step 0") closest to the inside of the movement 10 in the direction of the axis L, the projection for engagement 55 of the pull tab 50 enters the first recessed portion 72a to engage the latch 70. In addition, in the state where the winding stem 41 is at the 0 scale, the engagement portion 63 of the lever for engagement 61 enters the first recessed portion 54a of the pull tab 50. Therefore, the winding stem 41 is positioned at the step 0.
    At step 0, the head 71 of the latch 70 retains the sliding pinion 43 so that the sliding pinion 43 meshes with the winding pinion 45. Here, the sliding pinion 43 is not rotatable relative to the winding stem 41. Therefore, when the winding rod at the 0 scale is turned, the sliding pinion 43 rotates with the winding stem 41, as if it were integral with it, and the winding pinion 45 is rotated by means of the sliding pinion 43. The winding pinion 45 rotates so that the round-hole wheel (not shown) meshing with this winding pinion 45 rotates. The round-hole wheel rotates, so that the barrel spring housed in the barrel wheel is armed (reassembled) via the ratchet (both not shown).
    Figs. 4 to 6 are explanatory views of an operation of the switching mechanism of the first embodiment and are plan views of a configuration of a portion of the switching mechanism as seen from the back side.
    In a sequential manner, when the winding stem is pulled from the step 0 towards the outside of the movement 10, along the direction of the axis L, the head 52 of the pull tab 50 is moved towards the outside of the movement 10 so as to follow the movement of the winding stem 41. In other words, the pull tab 50 pivots in a clockwise direction, on the first pivot axis P. Then, as as shown in fig. 4, the engagement portion 62 of the engagement lever 61 moves from the first recessed portion 54a to the first boss 56a when viewed from the pull tab 50. Therefore, the engagement lever 61 is pushed by the pull tab 50 and rotates clockwise on the second pivot axis Q. In addition, the state where the engagement portion 63 of the engagement lever 61 is at the top of the first hump 56A of the zipper 50 is called the 0.5 echelon.
    When the engaging lever 61 rotates in the counterclockwise direction, the base end of the biasing portion 62 which is integral with the engagement lever 61 is moved outwardly of the movement 10. Here, the protruding portion 62a of the distal end of the return portion 62 abuts against an inward facing surface of the groove 11a (see Fig. 2) of the plate 11, in the radial direction. Therefore, the return portion 62 is deflected and deformed, and it recalls the engagement lever 61 in a clockwise direction about the second pivot axis Q. The deformation of the restoring portion 62 increases at as the engaging portion 63 of the engagement lever 61 is moved from the position of the step 0 to the position of the step 0.5. Therefore, the return force of the biasing portion 62 relative to the engagement lever 61 increases as the engagement portion 63 of the engagement lever 61 is moved from the position of the step 0 at the position of step 0.5.
    In addition, when the winding stem 41 is pulled from the step 0 towards the outside of the movement 10, along the direction of the axis L, the projection for engagement 55 of the zipper 50 moves from the first recessed portion 72a to engage the latch 70 to the first engaging boss 74a when viewed from the latch 70. Therefore, the latch 70 is pushed against the pull tab 50 and rotates counterclockwise about the third pivot axis R. In this case, the latch 70 pushes the latch spring 83 (see Fig. 2) and pivots the latch spring 83 while deforming the spring latch 83. In other words, the latch 70 pivots counterclockwise, against the spring force of the spring latch 83.
    When the latch 70 pivots counterclockwise, the head 71 of the latch 70 is moved inwardly of the movement 10. Then, the sliding pinion 43 is moved inward movement 10, along the direction of the axis L, so as to follow the movement of the head 71 of the latch 70. In other words, the sliding pinion 43 is moved in the direction of a distance from the winding pinion 45. Consequently, the meshing between the sliding pinion 43 and the winding pinion 45 is eliminated.
    Then, when the winding stem 41 is pulled out of the movement 10 from the 0.5 echelon, along the direction of the axis L, the head 52 of the pull tab 50 is moved to the outside the movement 10, so as to follow the movement of the winding stem 41. In other words, the pull tab 50 pivots clockwise on the first axis P. Then, as shown in FIG. fig. 5, the engaging portion 63 of the engagement lever 61 passes over the first hump 56a when viewed from the pull tab 50. In this case, the engagement lever 61 is biased by the return portion. 62 clockwise around the second pivot axis Q, and thus returns to its initial position (position at step 0). The engagement portion 63 of the engagement lever 61 engages the second recessed portion 54b of the pull tab 50. In addition, the state where the engagement portion 63 of the engagement lever 61 enters the the second recessed portion 54b of the pull tab 50 is called the step 1.
    The deformation of the return portion 62 decreases as the engaging portion 63 of the engagement lever 61 moves from the position of the step 0.5 to the position of the step 1. Therefore, the restoring force of the biasing portion 62 relative to the engagement lever 61 decreases as the engagement portion 63 of the engagement lever 61 moves from the position of the step 0.5 to the position of the engagement lever 61. Step 1. The engaging portion 63 of the engagement lever 61 enters the second recessed portion 54b of the pull tab 50, so that the winding stem 41 is positioned at the step 1.
    In addition, when the winding stem 41 is pulled from the 0.5 echelon to the outside of the movement 10, along the direction of the axis L, the projection for engagement 55 of the zipper 50 crosses the first hump 74a of latch 70 when viewed from latch 70. In addition, since latch 70 is biased by latch spring 83 (see Fig. 2) clockwise of a watch, the projection 55 for engaging the pull tab 50 is always in sliding contact with the latch 70. The latch 70 is pushed against the pull tab 50 and pivots counterclockwise on the third pivot pin R. At step 1, the engagement projection 55 of pull tab 50 enters the second recessed portion 72b to engage latch 70.
    When the latch 70 pivots counterclockwise, the head 71 of the latch 70 is moved inwardly of the movement 10. Then, the sliding pinion 43 is moved even more inwardly. of the movement 10, along the axis L, so as to follow the movement of the head 71 of the rocker 70. The sliding pinion 43 meshes with the adjusting wheel 23 (see Fig. 2) and the rod for setting in engagement 73 provided in the latch 70 comes into contact with a lateral edge of the main body lever 27 of the adjusting wheel lever 24. Then, the sliding pinion 43 is such that it is not rotatable relative to the rod 41. Therefore, when the winding stem 41 is turned while it is at the level 1, the sliding pinion 43 rotates with the winding stem as if it were in one piece with it , and the adjusting wheel 23 rotates via the sliding pinion 43. The regulating wheel 23 turns, so that the date wheel 15 (see Fig. 2) rotates through the date correction transfer wheel 22 meshing with the adjusting wheel 23 and through the date correction wheel 21 meshing with the date correction transfer wheel 22. By therefore, the date can be corrected by rotating the date wheel 15.
    Then, when the winding stem 41 is pulled from the step 1, towards the outside of the movement 10, along the direction of the axis L, the head 52 of the zipper 50 moves towards the outside of the movement 10, so as to follow the movement of the winding stem 41. In other words, the pull tab 50 pivots in a clockwise direction, around the first pivot axis P. Then, as shown in fig. 6, the engaging portion 63 of the engagement lever 61 passes over the second hump 56b, from the second recessed portion 54b, when viewed from the pull tab 50, to third recessed portion 54c. In this case, since the engagement lever 61 is biased by the return portion 62, clockwise about the second pivot axis Q, the engaging portion 63 of the lever for setting the socket 61 enters the third recessed portion 54c of the pull tab 50. In addition, the state where the engagement portion 63 of the engagement lever 61 enters the recessed third portion 54c of the pull tab 50 is called step 2. The engaging portion 63 of the engagement lever 61 engages in the recessed third portion 54c of the pull tab 50, so that the winding stem 41 is positioned at the step 2.
    In addition, when the winding stem 41 is pulled from the step 1 towards the outside of the movement 10, along the direction of the axis L, the projection for engagement 55 of the zipper 50 passes over the second engagement bump 64b from the second recess portion 72b of the latch 70 when viewed from the latch 70 to the third recessed portion for 72c engagement. The latch 70 is pushed against the pull tab 50 and pivots counterclockwise around the third pivot axis R. At step 2, the projection for engaging 55 of the pull tab 50 enters the third recessed portion 72c for engaging 72 flip-flop 70.
    As shown in FIG. 2, when the latch 70 pivots counterclockwise, the head 71 of the latch 70 moves inwardly of the movement 10. Then, the sliding pinion 43 moves inwardly of the movement 10 along the direction of the axis L, so as to follow the movement of the head 71 of the latch 70. The engagement head 73 of the latch 70 further pushes the lateral edge of the main body of the lever 27 the adjusting wheel lever 24, counterclockwise. As a result, the lever main body 27 of the adjusting wheel lever 24 is pivoted about the shaft portion 25. Therefore, the lever main body 27 of the adjustment wheel lever 24 stops meshing with the wheel. transfer of date correction 22, being pushed against the rod 73, and moves inwardly of the movement 10. The adjusting wheel 23 meshes with the daytime minute wheel 31.
    Here, the coolant pinion 43 is such that it is not rotatable relative to the winding stem 41. Therefore, when the winding stem rotates while it is at step 2, the pinion flowing 43 rotates with the winding stem 41, as if it were integral with it, and the adjusting wheel rotates through the sliding pinion 43. The adjusting wheel 23 rotates, so that the hour wheel 32 and the minute wheel (not shown) rotate through the day-minute wheel 31 meshing with the adjusting wheel 23. Therefore, the time can be corrected by turning the hour wheel. 32 and the minute wheel.
    Then, when the winding stem 41 is pushed back from the step 2 to the step 0, the head 52 of the pull tab 50 moves inwardly of the movement 10, so as to follow the movement of the winding stem 41. In other words, the pull tab 50 pivots counterclockwise around the first pivot axis R Then, as shown in FIG. 3, the engaging portion 63 of the engagement lever 61 passes over the second hump 56b, from the third recessed portion 54c, when viewed from the pull tab 50, until reaching the second recessed portion 54b, then passes over the first hump 56a to penetrate the first recessed portion 54a.
    In addition, when the winding stem is pushed back from the echelon 2 to the 0 echelon, the protrusion 55 to engage the pull tab 50 passes over the second hump for engagement 74b, from the third engaging recessed portion 72c of the latch 70, when viewed from the latch 70, to reach the second engagement recessed portion 72b. In addition, the protrusion 55 for engaging the pull tab 50 passes over the first engaging boss 74a until it enters the first engaged recess portion 72a. Since the latch 70 is biased by the latch spring 83 (see Fig. 2) clockwise about the third pivot axis R, the latch 70 pivots clockwise, around the third pivot axis R, so as to follow the movement of the pull tab 50.
    As shown in FIG. 2, when the latch 70 pivots clockwise, the head 71 of the latch 70 moves outwardly of the movement 10. Then, the sliding pinion 43 moves outwardly of the movement 10, along the direction of the axis L, so as to follow the movement of the head 71 of the rocker 70, to mesh with the winding pinion 43. In addition, since the adjusting wheel 23 is recalled by the portion of return 28 of the adjusting wheel lever 24, outwardly of the movement 10, the adjusting wheel 23 moves outwardly of the movement 10 so as to follow the movement of the sliding pinion 43. Therefore, the adjusting wheel 23 stops meshing with the daytime minute wheel 31 and meshes with the date correction transfer wheel 22.
    Operation of the engagement lever 61 and the return portion 62 of the click spring 60 will now be described.
    As shown in FIG. 3 and as described above, the engagement lever 61 engages any of the recessed portions 54a-54c of the pull tab 50 so that the winding stem 41 is positioned at each steps 0, 1 and 2. The biasing force of the biasing portion 62 acting on the engagement lever 61 increases as the engaging portion 63 passes over the first boss 56a or the second boss 56b, when viewed from the zipper 50. Therefore, when the user pulls the winding stem 41 and when the user pushes this winding stem 41, the click sensation can be obtained.
    The engagement lever 61 pivots about the second pivot axis Q, by the movement of the pull tab 50. The position which, on the engagement lever 61, engages with the pull tab 50 is the engaging portion 63 of the distal end of the engaging lever 61. In other words, the distance between the position which, on the engagement lever, engages the pull tab 50 and the second pivot axis Q, which is the pivoting center of the engagement lever 61, is substantially constant regardless of the pivoting position (angular position) of the pull tab 50. Therefore, the force required on the portion for engagement 63 to pass over the first hump 56a and the second hump 56b of the pull tab 50 is the same. In addition, in the embodiment in question here, although the force is the same, the force can be arbitrarily adjusted by means of tilt angles and heights of the first hump 56a and the second hump 56b.
    As has been described above, according to the embodiment in question here, since the recessed portions 54a to 54c present in the pull tab 50 are disposed side by side along the circumferential direction about the first pivot axis P, the recessed portions 54a to 54c move along the circumferential direction about the first pivot axis P when the pull tab 50 pivots about the first pivot axis P due to a movement of the winding stem 41 .
    Therefore, the point of contact between the engagement portion 63 of the engagement lever 61 and the recessed portions 54a-54c, where the engagement portions 63 engage, is substantially the same (constant). ), as seen from the second pivot axis Q which is the pivoting center of the engagement lever 61, regardless of the pivotal position (i.e. the angular position) of the pull tab 50. Therefore, the force required to rotate the engagement lever 61 from a state where the engagement portion 63 enters the recessed portions 54a-54c, the engagement lever 61 being recalled by the return portion 62 is the same regardless of which of the recessed portions 54a to 54c into which the engaging portion 63 engages. Consequently, a variation of the click sensation when the stem is actuated is winding 41, variation due to the position of the tig e winding 41, can be avoided and the click sensation produced during an actuation of the winding stem 41 can be easily adjusted to the desired level (to the desired amplitude). Further, in the embodiment in question here, although the force required to rotate the engagement lever 61 is the same, this force can be arbitrarily adjusted by means of tilt angles and heights of the first hump 56a and second hump 56b. Consequently, the click sensation produced during an actuation of the winding stem 41 can be arbitrarily set to the desired amplification irrespective of the position of the winding stem 41.
    In addition, since the engagement lever 61 is biased by the return portion 62, it is possible to increase the degree of freedom as to the choice of the shape and location of the lever arrangement for engagement 61, compared to the constitution of the prior art in which the engagement lever is itself deflected and deformed so that there is the restoring force. Therefore, the degree of freedom in the arrangement of the movement arrangement components 10 can be improved and the size of the movement and the size of the timepiece 1 can be reduced.
    In addition, the return portion 62 is integral with the engaging lever 61. Therefore, since the engagement lever 61 and the biasing portion 62 can be formed into a single component. the number of movement components 10 can be reduced and manufacturing costs can be reduced compared to the arrangement in which the engagement lever and the return portion are formed by separate components.
    In addition, since the engagement lever 61 is placed in the same plane as the pull tab 50, it is possible to reduce the space occupied by the pull tab 50 and the engagement lever 61, compared to the wherein the engagement lever 61 is arranged to overlap the pull tab 50. Therefore, it is possible to reduce the size of the movement 10.
    Variant Example of the First Embodiment [0081] FIG. 7 is a plan view of a configuration of a portion of a movement according to an alternative example of the first embodiment, as seen from the back side.
    In the first embodiment, the distal end of the return portion 62 of the click spring 60 is in abutment against the inside of the groove 11 formed in the plate 11. On the other hand, the exemplary variant of the first embodiment shown in FIG. 7 differs from the first embodiment in that the distal end of a return portion 162 of a click spring 160 abuts against an eccentric pin 35. In addition, the same reference numbers are given to the same configurations as those of the first embodiment and a detailed description of these configurations will be omitted (this also applies to the embodiments which follow).
    As shown in FIG. 7, a switching mechanism 140 of the movement 110 comprises the click spring 160 and the eccentric rod 35.
    The click spring 160 includes an engagement lever 61 and the biasing portion 162, which recalls the engaging lever 61. The biasing portion 162 is integral with the lever for setting The return portion 162 extends from a base end of the engagement lever 61 in a direction other than toward the engagement lever 61. In the embodiment of FIG. question here, the return portion 162 extends from the base end of the engagement lever 61 to an opposite side, relative to the second pivot axis Q, to a tail 53 of a pull rod 50. The return portion 162 extends along a circumferential direction (see Fig. 2) about the central axis O. The return portion 162 is formed so that it can be deflected and deformed. A protruding portion 162a, which is bulged inwardly in the radial direction, is formed at the distal end of the return portion 162.
    The eccentric rod 35 is disposed on a rear side of the plate 11 (see Fig. 2). The eccentric pin 35 comprises a shaft portion 35a which is pivotably mounted to the plate 11, and an eccentric head 35b which is provided on a rear side of the shaft portion 35a and is eccentric relative to the shaft portion 35a. to the shaft portion 35a. An outer peripheral surface of the eccentric head 35b abuts the distal end of the return portion 162 in the outward direction, inwardly of the movement 110. The eccentric rod 35 can adjust the position of the distal end of the return portion 162, with respect to the central axis of the shaft portion 35a, by rotation of the eccentric head 35b with respect to the plate 11, around the shaft portion 35a. In other words, by means of a rotation of the eccentric head 35b, the eccentric rod 35 can adjust the amount from which the return portion 162 is deflected and deformed.
    As described above, in the variant example in question here, sincequec the eccentric rod 35 which abuts against the return portion 162 and which can adjust the amount of deflection and deformation of the return portion 162, the amount from which the biasing portion 162 is deflected and deformed is adjusted by the eccentric pin 35, so that the force required to rotate the engagement lever 61 recalled by the return portion 162. Therefore, it is even more easily adjustable click sensation occurring at the time of actuation of the winding stem 41.
    Second Embodiment [0087] FIG. 8 is a plan view of the rear side of a movement according to a second embodiment.
    In the first embodiment, the engagement lever 61 and the return portion 61 are in one piece. On the other hand, the second embodiment shown in FIG. 8 differs from the first embodiment in that an engaging lever 261 and a biasing portion 262 are formed as separate components.
    As shown in FIG. 8, a movement 210 comprises a plate 211 forming a base, a date wheel 15 which is disposed on the rear side of the plate 211, a date correction mechanism 220 which is incorporated in the plate 211, a front wheel (no shown), a rear wheel 30 and a switching mechanism 240.
    The date correction mechanism 220 includes a date correction wheel 21, a date correction transfer wheel 22, a setting wheel 23, and an adjusting wheel lever 224. The wheel lever 224 is mounted so as not to be pivotable about the shaft portion 225 provided in the platen 211. The adjustment wheel lever 224 includes a lever main body 227 having a base end carried by the forming portion. shaft 225, and a spring portion 228 extending from the base end of the lever main body 227 and which is integral with it. The base end of the lever main body 227 is provided at a position overlapping on the date wheel 15 in a plan view. The lever main body 227 extends from the base end toward the inside of the movement 210. The adjusting wheel 23 is mounted on a distal end of the lever main body 227 so as to be rotatable. . The lever main body 227 is formed with a through hole 227a into which a rod 273 engages a latch 270 described below. The spring portion 228 extends along a circumferential direction about the central axis O. A protruding portion 228a, which is outwardly bulged in a radial direction, is formed at the distal end. of the spring portion 228. The spring portion 228 is located within a groove 211 formed in the plate 211 and the protruding portion 228a abuts against an inward facing surface of the groove 211a. of the plate 211, in the radial direction. Therefore, the spring portion 228 recalls the lever main body 227 around the shaft portion 225 of the platen 211, clockwise in FIG. 7.
    The switching mechanism 240 comprises a winding stem 41, a sliding pinion 43, a pull tab 250, the engagement lever 261, the return portion 262, the rocker 270, a rocker spring 290, as well as a rear presser 280.
    The pull tab 250 is carried by a first support shaft 211b, protruding from the plate 211, and is pivotable about a first pivot axis R The first pivot axis P is provided so as to be parallel to the central axis O. The pull tab 250 comprises a central portion 251 that carries the first support shaft 211b, and a head 252 and a tail 253 which extend from the central portion 251. The portion 251 is disposed adjacent to the winding stem 41 in the circumferential direction about the central axis O. The central portion 251 is disposed on the opposite side, relative to the winding stem 41, to the portion The head 252 of the pull tab 250 is shaped such that its width decreases progressively as one moves away from the central portion 251. A pull rod 257 protrudes into the head 25 2 of the pull tab 250. The pull rod 257 has a columnar shape extending to the side of the plate 211, in the axial direction of the first pivot axis P. The pull rod 257 is disposed in the constricted portion 41a (thinner portion) of the winding stem 41. The pull tab 250 pivots around the first pivot axis P, so that the head 252 moves following the movement of the winding stem 41 according to the direction of the L axis.
    FIG. 9 is a plan view of a configuration of a portion of a motion according to the second embodiment as viewed from the back side.
    As shown in FIG. 9, the shank 253 extends from the central portion 251, towards the opposite side, with respect to this central portion 251, at the head 252. The distal end of the shank 253 is shaped so as to present a width which is greater than the base end of the tail 253. The tail 253 comprises several (three in the embodiment in question here) recessed portions 254a to 254c, as well as a projection for engaging 255 .
    The recessed portions 254a to 254c are a first recessed portion 254a, a second recessed portion 254b and a recessed third portion 254c. Each of the recessed portions 254a-254c is formed at a distal edge of the shank 253. The recessed portions 254a-254c are positioned side-by-side in the circumferential direction about the first pivot axis P. The recessed portions 254a to 254c are side by side in succession in an inner to outer direction of the movement 10, in the following order: first recessed portion 254a, second recessed portion 254b and third recessed portion 254c. Each of the recessed portions 254a to 254c is open to a side opposite to the winding stem 41 in a plan view. A first boss 256a is formed between the first recessed portion 254a and the second recessed portion 254b. A second boss 256b is formed between the second recessed portion 254b and the third recessed portion 254c.
    The engagement protrusion 255 is formed at a position closer to the inside of the movement 10 than are the recessed portions 254a to 254c. The engaging projection 255 projects inwardly from the movement 210. The engagement projection 255 engages the latch 270.
    The engagement lever 261 includes a first lever portion 264 pivotably mounted on the second support shaft 211 projecting from the base 211 (see Fig. 8). first engaging rod 265 (corresponding to what is called the engagement portion in the appended claims) projecting from the first lever portion 264, a second engaging portion 266 extending from the base end of the first lever portion 264, and a second engagement rod 267 protruding from the second lever portion 266.
    The first lever portion 264 is pivotally mounted about the second pivot axis Q. The second pivot axis Q is arranged to be parallel to the first pivot axis P. The second pivot axis Q is disposed on the opposite side, with respect to the tail 253 of the pull tab 150, at the first pivot axis P. The first lever portion 264 is disposed on the opposite side to the plate 211, with respect to the pull tab 250 according to the axial direction of the central axis O. The first lever portion 264 extends to the tail 253 of the pull tab 250.
    The first engagement rod 265 has a columnar shape. The first engagement shank 265 extends from the distal end of the first lever portion 264 to the side of the platen 211 in the axial direction of the central axis O. The first shank 265 engagement 265 enters the recessed portions 254a to 254c of the pull tab 250.
    The second lever portion 266 extends from a base end of the first lever portion 264 to a side opposite to the first lever portion 264.
    The second engagement rod 267 has a columnar shape. The second engagement shank 267 extends from the distal end of the second lever portion 266 to a side opposite the base 211 in the axial direction of the central axis O.
    As shown in FIG. 8, the return portion 262 is formed to be distinct from the engagement lever 261 (belonging to a separate member of the engagement lever 261). The return portion 262 recalls the engagement lever 261 to the recessed portions 254a to 254c of the pull tab 250, whereby the first engagement shank 265 of the engagement lever 261 enters the recessed portions. 254a to 254c of the pull tab 250. The return portion 262 comprises a fixed portion 268 which is fixed to the base 211, and a spring portion 269 which extends from the fixed portion 268, which is in one piece with it and which is shaped to be deflected and deformed. The fixed portion 268 is disposed on the side opposite the pull tab 250, relative to the engagement lever 261 in the circumferential direction about the central axis O. The fixed portion 268 is oval shaped. The fixed portion 268 is disposed in such a way that a major axis extends circumferentially about the center axis O. The spring portion 269 extends from the fixed portion 268 towards the lever for engagement 261, in the circumferential direction about the central axis O. A distal end of the spring portion 269 abuts against the second engagement shank 267 of the engagement lever 261 in the outward direction toward inside the movement 210.
    [0103] As shown in FIG. 9, the latch 270 is disposed in the same plane as the pull tab 250, adjacent. In other words, the flip-flop 270 is disposed so as to overlap the pull tab 250 when viewed from the radial direction. The latch 270 is pivotally mounted about a third pivot axis R with respect to the plate 211 (see Fig. 8). The third pivot axis R is arranged to be parallel to the first pivot axis R The third pivot axis R is disposed on a side opposite to the first pivot axis P, with respect to the tail 253 of the pull tab 250. In this embodiment, flip-flop 270 is pivotably mounted by means of shaft portion 225 provided in platen 211. Flip-flop 270 includes a head 271 and an engaging rod 273.
    The head 271 of the rocker 270 is disposed in a constricted portion 43a (thinner portion) of the sliding pinion 43. The latch 270 rotates about the third pivot axis R and moves the head 271, thus moving the pinion flowing on the winding stem 41, in the direction of the axis L. In addition, a distal end of the head 271 of the latch 270 is in abutment against the projection for engaging 255 of the pull tab 250, in the internal direction towards outside the movement 210. The distal end 271 of the latch 270 includes a first wedge 271a and a second wedge 271b, which is formed downstream of the first wedge 271a clockwise about the third pivot axis R .
    The engagement pin 273 is disposed between the head 271 and a base end of the latch 270. The engagement pin 273 projects to a side opposite the base 211, according to the axial direction of the central axis O.
    As shown in FIG. 8, the rocker spring 290 comprises a fixed portion 291 which is fixed to the base 211, as well as a main spring body 292, which extends from the fixed portion 291, which is in one piece with it and that is shaped so as to be deflected and deformed. The fixed portion 291 has an oval shape. The fixed portion 291 is placed at the same position as the distal end of the spring portion 228 of the adjusting wheel lever 224, in the circumferential direction about the central axis O, so that the major axis extends in the circumferential direction about the central axis O. The spring main body 272 extends from the fixed portion 291, towards the winding stem 41, along the circumferential direction about the central axis O. A distal end of the spring main body 292 abuts against the engagement rod 273 of the latch 270 in the inner to the outer direction of the movement 210. Therefore, the latch spring 290 recalls the latch 270 in clockwise in fig. 8, around the third pivot axis R.
    The rear presser 280 pushes, toward the base 211, the movement configuration components 210 disposed on the rear side of the base 211. The rear presser 280 is disposed on the opposite side to the base 211, by The back press 280 includes a base 281 attached to the platen 211, a puller presser 282, and a latch presser 284 extending from the base 281.
    The base 281 extends in a circumferential direction about the central axis O and is arranged to overlap the spring latch 290 when viewed from the axial direction of the central axis O.
    The puller press 282 passes over the winding stem 41, from one end 281a on a side close to the winding stem 41 in the base 281 and extends to a position overlapping the central portion 251 of the pull tab 250. A distal end of the puller presser 282 has a Y-shape so as to avoid the first support shaft 211b of the plate 211 in a plan view. The distal end of the puller press 282 pushes the pull tab 250 toward the plate 211.
    The rocker press 284 is disposed at a position closer to the inside of the movement 210 than is the puller press 282. The rocker press 284 passes over the winding stem 41, to from the end 281a of the base 281, and extends to a position overlapping the distal end of the first lever portion 264 of the engagement lever 261. The latch presser 284 is arranged to overlap on the head 271 of the latch 270 in a plan view. The rocker press 284 pushes the rocker 270 toward the plate 211 and pushes the engagement lever 261 into the distal end to the side of the base 211.
    We will now briefly describe an operation of the switching mechanism 240. In addition, a detailed description of the operations identical to those of the switching mechanism 40 of the first embodiment will be omitted. In addition, in the following description, the "clockwise" is clockwise when the movement 210 is seen from the back side (i.e. clockwise in Fig. 8 and 9). The same goes for the opposite direction of clockwise.
    As shown in FIG. 9, in the state where the winding stem 41 is in a position (hereinafter called the "0-step") closest to the inside of the movement 210 in the direction of the axis L, the first rod for engagement 265 of the engagement lever 261 enters the first recessed portion 254a of the pull tab 250. Therefore, the winding stem 41 is positioned at the step 0. In addition, at step 0, the head 271 of the latch 270 holds the sliding pinion 43 so that the sliding pinion 43 meshes with the winding pinion 45. In addition, at the 0 scale, the protrusion 255 for engaging the puller 250 is in abutment against the first corner 271a of the head 271 of the latch 270, in the outward direction towards the inside of the movement 210.
    Then, when the winding stem is pulled from the step 0 to the outside of the movement 210, in the direction of the axis L, the head 252 of the zipper 250 moves outward of the movement 210 so as to follow the movement of the winding stem 41. In other words, the pull tab 250 rotates counterclockwise around the first pivot axis P. Here, the distal end of the spring portion 269 of the biasing portion 262 abuts against the second engagement rod 267 of the engagement lever 261 in the outward to inward direction of the movement 210. Therefore, the lever for engaging socket 261 is biased by the return portion 262 counterclockwise when it is rotated clockwise. Therefore, the first engaging rod 265 of the engaging lever 261 passes over the first hump 256a, from the first recessed portion 254a, when viewed from the pull tab 250, to reach the second recessed portion 254b and passes over the second hump 256b to further move to the third recessed portion 254c. In this case, similar to the switching mechanism of the first embodiment, the biasing force of the biasing portion 262 acting on the engagement lever 261 increases or decreases as the first engagement rod 265 passes over it. the first hump 256a or the second hump 256b, when viewed from the zipper 250. Therefore, when the user pulls on the winding stem 41 and when the user pushes on this winding stem 41, the sensation of click can be obtained. Further, the state where the first engaging rod 265 of the engaging lever 261 enters the third recessed portion 254c of the pull tab 250 is called the step 2.
    In addition, when the winding stem 41 is pulled from the 0 step, outward movement 210, along the direction of the axis L, the projection for engagement 255 of the puller 250 moves in the outward to inward direction of movement 210. Then, when passing from step 0 to step 1, the first wedge 271a of head 271 of latch 270 is pushed against the protrusion for setting engaging 255 of the pull tab 250 and moving inwardly of the movement 210. In addition, at step 1, the engagement projection 255 of the pull tab 250 contacts the first corner 271a and the second corner 271a. 271 b of the head 271 of the latch 270 the pull tab 250. When passing from the step 1 to the step 2, the second corner 271 b of the head 271 of the latch 270 is pushed against the projection for setting taken 255 from the zipper 250 and moves inwardly of the movement 210. In other words, the latch 270 rotates clockwise about the third pivot axis R. In this case, the latch 270 urges the spring main body 292 of the latch spring 290 to pivot while deforming the spring main body 292 (FIG. see fig. 8).
    When the latch 270 pivots counterclockwise, the head 271 of the latch 270 moves inwardly of the movement 210. Then, the sliding pinion 43 moves inwardly of the movement 210, along the direction of the axis L, so as to follow the movement of the head 271 of the latch 270. Therefore, the sliding pinion 243 separates from the winding pinion 45 and then meshes with the adjusting wheel 23. In this case, as shown in figs. 8 and 9, the engaging rod 273 of the latch 270 abuts the through hole 227a of the adjusting wheel lever 224. When the latch 270 is still rotating counterclockwise, the lever Adjusting wheel 224 is pushed against the engagement pin 273 abutting the through hole 227a and it moves inwardly of the movement 210. In other words, the adjustment wheel lever 224 pivots in the counterclockwise, about the third pivot axis R. In this case, the adjusting wheel lever 224 pivots by bending the spring portion 228. Then, the adjusting wheel 23 moves inwardly of the movement 210, so as to follow the movement of the main lever body 227 of the adjusting wheel lever 224. Therefore, the adjusting wheel 23 separates from the date correction transfer wheel 22 and then meshes with the wheel minutes of day 3 During this time, the adjusting wheel 23 and the sliding pinion 43 always mesh with each other.
    Overall, as shown in FIG. 9, when the winding stem 41 is pushed back from the step 2 to the step 0, the head 252 of the pull tab 250 moves inwardly of the movement 210 so as to follow the movement of the rod In other words, the pull tab 250 pivots clockwise about the first pivot axis R Then the first engagement rod 265 of the engagement lever 261 passes through on the second hump 256b from the third recessed portion 250c, when viewed from the pull tab 250, until reaching the second recessed portion 254b and, further, passes over the first hump 256a to enter the first recessed portion 254a.
    In addition, when the winding stem 41 is pushed back from the step 2 to the step 0, the projection for engagement 255 of the pull tab 250 moves from the inside to the Outside of the movement 210. Since the latch 270 is biased by the latch spring 290 (see Fig. 8) clockwise around the third pivot axis R, the latch 270 pivots in the opposite direction. clockwise, around the third pivot axis R, so as to follow the movement of the pull tab 250.
    When the latch 270 rotates clockwise, the head 271 of the latch 270 moves outwardly from the movement 210. Then, the sliding pinion 43 moves outwardly from the movement 210 along the direction of the axis L, so as to follow the movement of the head 271 of the latch 270, and it meshes with the winding pinion 45. In addition, as shown in FIG. 8, since the adjusting wheel 23 is biased by the spring portion 228 of the adjusting wheel lever 224, outwardly of the movement 210, the adjusting wheel 23 moves outwardly of the movement 210 so as to follow the displacement of the sliding pinion 43. Therefore, the adjusting wheel 23 stops meshing with the daytime minute wheel 31 and meshes with the date correction transfer wheel 22.
    As described above, according to the embodiment in question here, the recessed portions 254a to 254c constituting the pull tab 250 are arranged side by side in succession along the circumferential direction about the first pivot axis P and the first engaging rod 265 of the engagement lever 261 enters the recessed portions 254a-254c. Therefore, similar to the first embodiment, a variation of the click sensation at the time of actuation of the winding stem, variation due to the position of the winding stem 41, can be avoided and the click sensation becomes producing when actuating the winding stem 41 can be easily adjusted to the desired level. Further, in the embodiment in question here, similar to the first embodiment, the force can be arbitrarily chosen by means of tilt angles and heights of the first boss 256a and the second boss 256b. Consequently, the click sensation at the moment of actuation of the winding stem 41 can be arbitrarily adjusted to the desired intensity, regardless of the position of the winding stem 41.
    In addition, since the engagement lever 261 is biased by the return portion 262, similar to the first embodiment, it is possible to increase the degree of freedom on the relative arrangement of the motion configuration components. 210. Therefore, it is possible to reduce the size of the movement 210 and the timepiece comprising this movement 210.
    In addition, the return portion 262 is distinct from the engagement lever 261. Therefore, since the engagement lever 261 and the return portion 262 may be separate components, there is the possibility of to improve the degree of freedom on the location of arrangement of the return portion 262, compared to the constitution in which the engagement lever and the return portion are integral. Therefore, the degree of freedom over the relative layout of the motion configuration components 210 can be increased.
    In addition, the shape of the return portion is not limited to the shape shown and it can be provided as the first engagement rod 265 is biased to the recessed portions 254a to 254c of the zipper 250.
    [0123] FIG. West a plan view of the configuration of a portion of a movement according to a first exemplary variant of the second embodiment as seen from the rear side. Fig. 11 is a plan view of a configuration of a portion of a movement according to a second exemplary variant of the second embodiment as seen from the back side.
    权利要求:
    Claims (7)
    [1]
    For example, as shown in FIG. 10, a biasing portion 362 may be a U-shaped deformable member abutting against a second engagement pin 366 projecting from an engagement lever 361. In addition, as shown in FIG. . 11, a return portion 462 is in the form of a hairspring, one end is connected to the engagement lever 461, the other end is connected to the turntable (not shown), so that the engagement lever 461 can be configured to be called back. [0125] FIG. 12 is a plan view of a configuration of a portion of a movement according to a third exemplary variation of the second embodiment as viewed from the back side. In addition, as shown in FIG. 12, a biasing portion 562 may be integral with a rear squeezer 580 which pushes toward the platen the motion-configuring components disposed on a rear side of the platen (not shown). Specifically, the rear presser 580 comprises a base 581 attached to the platen, a puller presser 582 (pressing member) extending from the base 581, and the return portion 562. The return portion 562 passes through above the winding stem 41, from the base 581, to extend to a position overlapping on a distal end of the engagement lever 561. The return portion 562 extends with a width substantially constant and it is formed to be deflected and distorted. The distal end of the biasing portion 562 abuts against a second engagement rod 567 projecting from the engagement lever 561 and recalls the engagement lever 561 to the recessed portions 254a through 254c. in addition, the return portion 562 is arranged to overlap on a head (not shown) of a rocker, in a plan view, it can have the function of a rocker press to push the rocker towards the plate. As described above, in the variant example in question here, the return portion 562 is integral with the puller bailer 582. Therefore, since the puller presser 582 and the portion 562 can be formed as a single element, it is possible to reduce the number of components of the movement and reduce the manufacturing cost, compared to the constitution in which the puller presser and the return portion are separate components. [0128] It should be noted that the present invention is not limited to the embodiments described with reference to the drawings, and that various modifications are possible within its technical scope. For example, in the embodiments in question above, the case where the present invention is applied to a mechanical timepiece has been described, but the present invention is not limited thereto, and the present invention is The invention can be applied to an analog timepiece of the quartz type. In addition, in each of the embodiments described above, the pull tab has three recessed portions, but the present invention is not limited thereto and the pull tab may have two recessed portions, or four recessed portions. , or even more. In addition, the configuration elements according to the embodiments described above may be appropriately replaced by known configuration elements within the scope, without departing from the concept of the present invention. claims
    A movement comprising: a winding stem which is movable in an axial direction; a pull tab which pivots on a first pivot axis according to the movement of the winding stem and which has a plurality of recessed portions which are arranged side by side along a circumferential direction about the first pivot axis; an engagement lever which has an engaging portion which penetrates the recessed portions and which is pivotally mounted on a second pivot axis; and a biasing portion that recalls the lever for engagement to the recessed portions.
    [2]
    2. Movement according to claim 1, wherein the return portion is in one piece with the lever for engagement.
    [3]
    3. Movement according to claim 1, wherein the return portion is formed to be non-integral with the engagement lever.
    [4]
    4. Movement according to claim 3, further comprising: a pressing member which pushes the pull tab, the return portion being integral with the pressing member.
    [5]
    5. Movement according to one of claims 1 to 4, wherein the return portion is formed to be deflected and deformed, and wherein the movement further comprises an eccentric rod which abuts against the return portion and which is able to adjust the amount of the return portion is deflected and deformed.
    [6]
    6. Movement according to one of claims 1 to 5, wherein the lever for engagement is disposed in the same plane as the pull.
    [7]
    7. Timepiece, comprising: a movement according to one of claims 1 to 6.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1918792B1|2010-04-21|Timepiece including a correction mechanism for a device displaying a time quantity
    EP1933212B1|2009-03-18|Timepiece with striking-mechanism comprising a locking lever
    EP2115537B1|2012-06-20|Timepiece comprising a mechanism for driving a device displaying a time-related value
    EP1617305B1|2009-01-21|Stopping device during hand-setting of a watch provided with a tourbillon
    EP1748330B1|2009-05-13|Stem device for winding and setting the time for a watch
    EP1801671B1|2009-05-13|Calendar watch provided with blocking means
    CH713526A2|2018-09-14|Watchmaking movement comprising a winding stem.
    EP2238519B1|2014-07-16|Timepiece comprising a chronograph mechanism
    EP2367074B1|2013-01-16|Multifunctional corrector device and timepiece comprising such a corrector device
    EP1722282B1|2010-04-07|Device for setting the axial position of a timepiece crown
    EP3144743B1|2018-03-14|Clock movement comprising a mechanism for correcting the date
    EP1708052B1|2008-05-14|Clockwork
    EP2124112A1|2009-11-25|Timepiece mechanism and module comprising such a mechanism
    EP3650952A1|2020-05-13|Timepiece comprising a device for actuating a crown or a valve
    EP3754436B1|2021-09-01|Timepiece, in particular a pocket watch, equipped with at least one cover
    EP1353244B1|2009-09-09|Timepiece with oblong shaped case
    CH712222B1|2022-01-14|Date indicator drive wheel, calendar mechanism, movement and timepiece.
    EP0871095B1|2002-08-14|Display device with jumping seconds
    EP2477080B1|2013-11-13|Timepiece showing the time zone corresponding to a selected time
    EP3955065A1|2022-02-16|Tab indexing device
    EP3839662A1|2021-06-23|Mechanism for setting the time of a timepiece comprising a system for setting the time with offset rods
    EP2249215A2|2010-11-10|Chronograph watch with instantaneous display of the fractions of a second
    EP3882716A1|2021-09-22|Timepiece including a toothed moving part indexed by a spring
    EP2010972B1|2010-06-30|Timepiece comprising a hand-setting mechanism controlled by a rotating bezel
    CH717217A2|2021-09-15|Balance adjustment mechanism capable of restarting the operation of the balance, movement and timepiece comprising it.
    同族专利:
    公开号 | 公开日
    JP6837353B2|2021-03-03|
    JP2018146235A|2018-09-20|
    CH713526B1|2022-01-14|
    CN108535996B|2021-07-20|
    CN108535996A|2018-09-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3955065A1|2020-08-14|2022-02-16|Rolex Sa|Tab indexing device|DE29723439U1|1997-06-12|1998-10-29|Flohr Swann Richard|Clock, in particular a wristwatch|
    EP2560054B1|2011-08-17|2017-11-15|ETA SA Manufacture Horlogère Suisse|Winding of a clock mechanism by pressing or pulling|
    EP2565729B1|2011-08-30|2018-01-31|Breitling AG|Calendar mechanism|
    JP5819180B2|2011-12-26|2015-11-18|セイコーインスツル株式会社|Calendar mechanism and watch having the same|
    JP6091942B2|2012-08-01|2017-03-08|セイコーインスツル株式会社|CALENDAR MECHANISM, MOVEMENT AND CALENDAR WATCH HAVING THE MECHANISM|
    WO2016057062A1|2014-10-10|2016-04-14|Simplify and Go, LLC|World watch|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017037936A|JP6837353B2|2017-03-01|2017-03-01|Movement and watches|
    [返回顶部]