Winding stem interlocking mechanism and clock

Abstract

To provide a setting stem interlocking mechanism allowing a user to pull out a setting stem to a first stage position and a second state position, even when a clutch wheel and a setting wheel butt on each other and even when the setting wheel and a gear of a wheel train for time setting butt on each other.SOLUTION: A setting stem interlocking mechanism 10 includes a setting stem 10 that can be pulled out from a 0 stage position to a first stage position and a second stage position, a setting lever 20 rotating in response to movement of the setting stem 10, a yoke 30 for moving a clutch wheel 18 in an axial direction corresponding to the rotation of the setting lever 20, a setting wheel 50 to be engaged with the clutch wheel 18 at the first stage position and the second stage position, and a switching link 40 engaged with the setting lever 20 and moving the setting wheel 50 between the first stage position and the second stage position according to rotation positions of the setting lever 20. The yoke 30 includes an elastic piece 35 that can be elastically deformed, between an engagement part 36 engaged with the clutch wheel 18 and a support point C2, and the switching link 40 includes a pulling-side part 42a being elastically deformable within a range from a part where the setting wheel 50 is supported, to a groove 41 with which the setting lever 20 is engaged.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a winding stem interlocking mechanism and a timepiece. [Background technology]

[0002] The winding stem of a watch has a crown attached to the part that protrudes outward from the body of the watch, and the mainspring can be wound by rotating the crown around the axis of the winding stem.

[0003] Furthermore, the winding stem can be pulled out in the axial direction; for example, when it is not pulled out, it is referred to as the 0-stage pulled-out position (hereinafter referred to as the 0-stage position), and when it is pulled out, it is referred to as the 1-stage pulled-out position (hereinafter referred to as the 1-stage position). In the 1-stage position, when the crown is rotated, the mainspring is not wound, but the time display hand is rotated to set the time.

[0004] Some winding stems can be pulled out further from the first position. In this case, in the first position, operations such as quickly correcting the date on the calendar can be performed, and in the second-pull position (hereinafter referred to as the second position), which is pulled out further from the first position, the time can be set.

[0005] The functions that correspond to the pull-out position of the winding stem (spring winding, quick calendar correction, time setting, etc.) described above are realized by a winding stem interlocking mechanism that includes a winding stem, a setting rod, a yoke, a clutch wheel, a timing wheel, a fine wheel, and a switching member that displaces the position of the fine wheel (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-266700 Summary of the Invention [Problem to be solved by the invention]

[0007] Incidentally, with the winding stem interlocking mechanism described in Patent Document 1, when the tip of the clutch wheel tooth abuts against the tip of the setting wheel tooth that should mesh with the clutch wheel, the clutch wheel cannot move to the position it should move to, and it is possible that the winding stem cannot be pulled out to the original set position of step 1. In this case, the user of the watch may mistakenly believe that the winding stem has been pulled out to the original position of step 1, and even if they turn the crown in that state, they will not be able to perform the desired operation (for example, correct the calendar).

[0008] Similarly, with the above-mentioned winding stem interlocking mechanism, when the tip of the tooth of the setting wheel displaced by the switching member hits the tip of the tooth of a gear in the time-setting wheel train (for example, an intermediate minute wheel) with which the setting wheel should mesh, the setting wheel cannot move to the position it should move to, and it is possible that the winding stem cannot be pulled out to its original set second position. In this case, the user of the watch may mistakenly believe that the winding stem has been pulled out to the second position, and even if they turn the crown in that state, they will not be able to perform the desired operation (for example, setting the time).

[0009] The present invention has been made in consideration of the above circumstances, and its object is to provide a winding stem interlocking mechanism that can pull out the winding stem to the first position even when the clutch wheel and the setting wheel butt against each other, and that can pull out the winding stem to the second position even when the setting wheel and a gear in a time-setting train wheel butt against each other, and a timepiece equipped with this winding stem interlocking mechanism. [Means for solving the problem]

[0010] A first aspect of the present invention is a winding stem interlocking mechanism comprising: a winding stem that can be pulled out from a 0-stage position where it is pushed in all the way in the axial direction, to a 1-stage position pulled out axially from the 0-stage position, and to a 2-stage position pulled out further axially from the 1-stage position; a timing rod connected to the winding stem and rotating in response to movement of the winding stem in the axial direction; a yoke that rotates in response to the rotation of the timing rod, thereby moving a clutch wheel provided on the shaft of the winding stem in the axial direction; a set wheel that meshes with the clutch wheel at the 1-stage position and the 2-stage position of the winding stem; and a switching member that engages with the setting rod and moves the set wheel by being displaced between the 1-stage position and the 2-stage position of the winding stem in response to the rotational position of the setting rod, wherein the yoke has a first elastic portion that can elastically deform between an engagement portion that engages with the clutch wheel and a fulcrum that is the center of rotation, and the switching member has a second elastic portion that can elastically deform a portion that comes into contact with the setting rod.

[0011] A second aspect of the present invention is a timepiece comprising the winding stem interlocking mechanism of the present invention and a plurality of gear train gears that mesh with the winding stem interlocking mechanism at the 0-stage position, the 1-stage position, and the 2-stage position of the winding stem. [Effects of the Invention]

[0012] With the winding stem interlocking mechanism and timepiece of the present invention, the winding stem can be pulled out to the first position even when the clutch wheel and the setting wheel butt against each other, and the winding stem can be pulled out to the second position even when the setting wheel and a gear in the time-setting wheel train butt against each other. [Brief explanation of the drawings]

[0013] [Figure 1] This is a plan view of the main parts of the winding stem interlocking mechanism provided in the watch, showing the arrangement of the winding stem, timing wheel, clutch wheel, timing pinion, yoke and pinion when the winding stem is in the 0 position. [Figure 2] The arrangement of the winding stem, timing pinion, clutch wheel, setting pinion, yoke, and set wheel of the winding stem interlocking mechanism shown in Figure 1 when the winding stem is in the first stage position is shown. [Figure 3]The arrangement of the winding stem, timing pinion, clutch wheel, setting pinion, yoke, and set wheel of the winding stem interlocking mechanism shown in Figure 1 in the second stage position of the winding stem is shown. [Figure 4] FIG. 1 is a plan view of the main part of the winding stem interlocking mechanism provided in the timepiece, showing the winding stem interlocking mechanism, illustrating the arrangement of the winding stem, setting pinion, fine set wheel and switching member when the winding stem is in the 0 position. [Figure 5] 5 shows the winding stem interlocking mechanism shown in FIG. 4, showing the arrangement of the winding stem, the setting lever, the set pinion and the switching member when the winding stem is in the first stage position. [Figure 6] 5 shows the winding stem interlocking mechanism shown in FIG. 4, showing the arrangement of the winding stem, the setting lever, the set wheel and the switching member in the two-stage position of the winding stem. [Figure 7] 1 , showing the winding stem interlocking mechanism and timepiece of Modified Example 1, and showing the state in which the yoke is positioned in the original 0-stage position. [Figure 8] 3, showing the winding stem interlocking mechanism 100 and timepiece 200 of Modified Example 1, and showing the state in which the yoke is arranged in the original two-stage position. [Figure 9] 5 is a plan view equivalent to FIG. 4 showing the winding stem interlocking mechanism and timepiece of modified example 2, showing the state in which the switching link is disposed in the original 0 stage position. [Figure 10] 7 is a plan view equivalent to FIG. 6 showing the winding stem interlocking mechanism and timepiece of Modified Example 2, showing the state in which the switching link is arranged in the original two-stage position. [Figure 11] 5 is a plan view equivalent to FIG. 4 showing the winding stem interlocking mechanism and timepiece of Modified Example 3, showing the state in which the switching link is disposed in the original 0-stage position. [Figure 12] 7 is a plan view equivalent to FIG. 6 showing the winding stem interlocking mechanism and timepiece of Modified Example 3, showing the state in which the switching link is arranged in the original two-stage position. DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a winding stem interlocking mechanism and a timepiece according to the present invention will be described with reference to the drawings.

[0015] Figures 1 to 6 are plan views of the main parts showing the winding stem interlocking mechanism 100 provided in a timepiece 200, with Figure 1 showing the arrangement of the winding stem 10, timing pinion 15, handwheel 18, setting pinion 20, yoke 30, switching link 40, iron wheel 50 and backing 80 when the winding stem 10 is in the 0th position, Figure 2 showing the arrangement of the winding stem 10, timing pinion 15, handwheel 18, setting pinion 20, yoke 30, switching link 40, iron wheel 50 and backing 80 when the winding stem 10 is in the 1st position, and Figure 3 showing the arrangement of the winding stem 10, timing pinion 15, handwheel 18, setting pinion 20, yoke 30, switching link 40, iron wheel 50 and backing 80 when the winding stem 10 is in the 2nd position.

[0016] Also, Figure 4 shows the arrangement of the winding stem 10, the setting rod 20, the setting wheel 50 and the switching link 40 when the winding stem 10 is in the 0th position, Figure 5 shows the arrangement of the winding stem 10, the setting rod 20, the setting wheel 50 and the switching link 40 when the winding stem 10 is in the 1st position, and Figure 6 shows the arrangement of the winding stem 10, the setting rod 20, the setting wheel 50 and the switching link 40 when the winding stem 10 is in the 2nd position.

[0017] The stem interlocking mechanism 100 shown in Figures 1 to 6 is one embodiment of the stem interlocking mechanism according to the present invention. Also, the timepiece 200 partially shown in Figures 1 to 6 is one embodiment of the timepiece according to the present invention.

[0018] The illustrated winding stem interlocking mechanism 100 is provided in a timepiece 200. The winding stem interlocking mechanism 100 comprises a winding stem 10, a timing pinion 15, a clutch wheel 18, a setting lever 20, a yoke 30, a set wheel 50, a switching link 40 (an example of a switching member), and a back bracket 80.

[0019] The winding stem 10 is an external operating member exposed to the outside of the movement in order to operate the movement of the timepiece 200 from the outside, and is formed in a shaft shape. A crown (not shown) is provided at the end of the winding stem 10 that protrudes to the outside. The winding stem 10 can be pulled out to the outside of the movement along the axial direction by pinching the crown with the fingers.

[0020] The winding stem 10 is set so that it can be pulled out to a 0 position, which is a state where it is not pulled out (a state where it is pushed in all the way), a 1 position, which is a state where it is pulled out only one position, and a 2 position, which is a state where it is pulled out further than the 1 position and is pulled out all the way. Each of the 0 position, 1 position, and 2 position positions of the winding stem 10 is set by a back clamp 80, which will be described later. By rotating the crown around the axis of the winding stem 10 in each of the 0 position, 1 position, and 2 position positions of the winding stem 10, each of the operations, which will be described later, can be performed on the movement.

[0021] The pinion 15 is provided on the axis of the winding stem 10. The pinion 15 moves integrally with the winding stem 10 in the axial direction of the winding stem 10, but is independent of the winding stem 10 in the direction around the axis. Therefore, at each of the 0th position, 1st position, and 2nd position of the winding stem 10, the pinion 15 displaces in the axial direction, but even if the winding stem 10 rotates around the axis, the pinion 15 does not rotate as it is.

[0022] The clutch wheel 18 is also provided on the axis of the winding stem 10. The clutch wheel 18 is independent from the winding stem 10 in the axial direction of the winding stem 10, but moves integrally with the winding stem 10 in the direction around the axis. Therefore, when the winding stem 10 rotates around the axis at each of the 0th position, 1st position, and 2nd position of the winding stem 10, the clutch wheel 18 rotates together with the winding stem 10.

[0023] The setting fan 20 is provided so as to be rotatable around a fulcrum C1. A pivot support portion 21 of the setting fan 20, which is distant from the fulcrum C1, is rotatably connected to the winding stem 10. A pressing portion 24 of the setting fan 20, which is separate from the pivot support portion 21 and distant from the fulcrum C1, is in contact with a yoke 30, which will be described later. When the winding stem 10 is displaced in the axial direction, the pivot support portion 21 moves, and as a result, the setting fan 20 rotates around the fulcrum C1, and the position of the yoke 30 with which the pressing portion 24 contacts changes.

[0024] In other words, at each of the 0th, 1st and 2nd positions of the winding stem 10, the posture of the setting rod 20 around the fulcrum C1 changes, and the part of the yoke 30 that the pressing portion 24 contacts (pressed portion) changes sequentially from pressed portion 31a to pressed portion 31b to pressed portion 31c, thereby displacing the yoke 30.

[0025] An engagement pin 22 that engages with the back pressure member 80 is formed near the pressing portion 24 of the setting rod 20.

[0026] The backing member 80 is formed with a first recess 81a shown in Fig. 1, a second recess 81b shown in Fig. 2 adjacent to the first recess 81a, and a third recess 81c shown in Fig. 3 adjacent to the second recess 81b. The backing member 80 is formed to be elastically deformable so as to bend downward in the figures, so that when the setting rod 20 rotates, the engaging pin 22 bends the backing member 80 downward and engages with the first recess 81a, the second recess 81b, or the third recess 81c.

[0027] When the engagement pin 22 is engaged with each of the recesses 81a, 81b, 81c, the setting lever 20 is stationary without wobbling, and the winding stem 10 is stationary in each of the engagement states.

[0028] In other words, when the engagement pin 22 is engaged with the first recess 81a, the winding stem 10 is positioned at the 0th stage position, when the engagement pin 22 is engaged with the second recess 81b, the winding stem 10 is positioned at the 1st stage position, and when the engagement pin 22 is engaged with the third recess 81c, the winding stem 10 is positioned at the 2nd stage position.

[0029] When the winding stem 10 is pushed or pulled along the axial direction, the engagement pin 22 engages with one of the recesses 81a, 81b, or 81c, giving the finger pushing or pulling the winding stem 10 a sense of detent at each of the 0th, 1st, and 2nd positions.

[0030] The yoke 30 is provided so as to be rotatable around the fulcrum C2. The yoke 30 comes into contact with the pressing portion 24 of the setting lever 20 and rotates around the fulcrum C2 in response to the rotation of the setting lever 20. The pressed portion of the yoke 30 that comes into contact with the pressing portion 24 of the setting lever 20 moves in accordance with the position of the setting lever 20 around the fulcrum C1.

[0031] That is, when the winding stem 10 is in the 0 stage position, the pressing portion 24 contacts the pressed portion 31a, when the winding stem 10 is in the 1 stage position, the pressing portion 24 contacts the pressed portion 31b, and when the winding stem 10 is in the 2 stage position, the pressing portion 24 contacts the pressed portion 31c. As the pressed portion that the pressing portion 24 contacts changes from pressed portion 31a, 31b, to 31c, the yoke 30 rotates around the fulcrum C2 and changes its posture around the fulcrum C2.

[0032] The yoke 30 has an engagement portion 36 that is spaced apart from the fulcrum C2 and engages with the clutch wheel 18. The engagement portion 36 is the free end of an elastic piece 35 (first elastic portion) formed on the yoke 30. The elastic piece 35 is formed in the range between the engagement portion 36 and the fulcrum C2, which is the center of rotation, and has flexibility in a direction intersecting the longitudinal direction, allowing it to be elastically deformed.

[0033] As the yoke 30 rotates around the fulcrum C2, the position of the engagement portion 36 is displaced at each of the 0th, 1st and 2nd positions of the winding stem 10, thereby changing the position of the clutch wheel 18 relative to the winding stem 10.

[0034] Furthermore, since the frictional force between the clutch wheel 18 and the axis of the winding stem 10 is not large enough to cause significant elastic deformation of the elastic piece 35, when the yoke 30 displaces the clutch wheel 18 on the axis of the winding stem 10 in a direction away from the winding wheel 15, the elastic piece 35 does not elastically deform, or even if it does elastically deform, the amount of elastic deformation is very small.

[0035] A portion of the yoke 30, not shown, on the opposite side of the engaging portion 36 across the fulcrum C2 applies an elastic force that resists displacement in the counterclockwise direction of the yoke 30. In other words, the portion on the opposite side of the fulcrum C2 from the engaging portion 36 is relatively thin, like the elastic piece 35, and is formed to be elastically deformable, and the side edge on the counterclockwise side of this elastically deformable portion is formed so as to abut against the main plate of the movement or the like.

[0036] Therefore, the portion of the yoke 30 on which the engaging portion 36 is formed rotates counterclockwise around the fulcrum C2, and this rotation causes the side edge of the portion formed to be elastically deformable on the opposite side from the engaging portion 36 to abut against the base plate or the like and undergo elastic deformation, applying a biasing force that rotates the yoke 30 clockwise around the fulcrum C2. As a result, while the yoke 30 rotates counterclockwise, a torque acts on it that tries to return it to the clockwise direction.

[0037] In addition, the elastically deformable portion that applies a spring force to rotate the yoke 30 clockwise in response to displacement of the yoke 30 in the counterclockwise direction shown in the figure is not limited to being formed as part of the yoke 30, but may also be formed as a spring member that is separate from the yoke 30 and is in contact with or attached to the yoke 30.

[0038] The setting wheel 50 is provided on an extension line of the axis of the winding stem 10 in a plan view. The setting wheel 50 is supported at one end of the switching link 40, and can be displaced between a position where it meshes with gear 2 and a position where it meshes with gear 3 in accordance with the rotation of the switching link 40 about fulcrum C3 (see FIGS. 4 to 6).

[0039] Specifically, the iron wheel 50 does not displace and is in a position where it meshes with gear 2 in the range from the 0th stage position to the 1st stage position of the winding stem 10, and displaces away from gear 2 and into a position where it meshes with gear 3 in the range from the 1st stage position to the 2nd stage position of the winding stem 10.

[0040] Here, gear 2 is, for example, a gear (such as a rapid correction transmission wheel) of a gear train for fast calendar correction that quickly corrects the date on the calendar of the timepiece 200, and gear 3 is, for example, a gear (such as an intermediate minute wheel) of a gear train for time correction of the timepiece 200. Gears 2 and 3 are not limited to the gears described above.

[0041] 4 to 6, the switching link 40 is supported rotatably about a fulcrum C3, and rotatably supports the setting wheel 50 at one end remote from the fulcrum C3. The switching link 40 moves the setting wheel 50 by rotating about the fulcrum C3 between the first stage position and the second stage position of the winding stem 10 in accordance with the rotational position of the setting rod 20.

[0042] A predetermined groove 41 extending longitudinally from the tip of the switching link 40 is formed in a portion 42 that extends across fulcrum C3 on the opposite side from the portion that supports the setting wheel 50. A raceway pin 23 formed on the setting wheel 20 is engaged with this groove 41. As a result, when the setting wheel 20 rotates around fulcrum C1, causing the raceway pin 23 to rotate, the switching link 40 rotates around fulcrum C3 so that the groove 41 follows the movement of the raceway pin 23, and as a result, the setting wheel 50 is displaced between gears 2 and 3. In other words, groove 41 is a guide groove that changes the position of the switching link 40 around fulcrum C3 in accordance with the movement of the raceway pin 23.

[0043] The groove 41 is formed in a shape that matches the path of the raceway pin 23 so that the switching link 40 does not displace in response to movement of the raceway pin 23 of the setting rod 20 in the range from the 0th stage position to the 1st stage position of the winding stem 10. As a result, in the range from the 0th stage position to the 1st stage position of the winding stem 10, the setting wheel 50 does not displace from the position where it meshes with the gear 2.

[0044] When the winding stem 10 is in the 0-stage position, the clutch wheel 18 is in a position where it does not mesh with the setting wheel 50, but when the winding stem 10 is in the 1-stage position, the clutch wheel 18 is displaced by the yoke 30 to a position where it meshes with the setting wheel 50, and in the range between the 1-stage position and the 2-stage position of the winding stem 10, the meshing between the clutch wheel 18 displaced by the yoke 30 and the setting wheel 50 displaced by the switching link 40 is maintained, and the setting wheel 50 is displaced to a position where it meshes with the gear 3.

[0045] Therefore, the groove 41 is formed in a shape that synchronizes the movement of the pinion 50 supported by the switching link 40 in accordance with the movement of the track pin 23 of the setting rod 20 in the range from the first stage position to the second stage position of the winding stem 10 with the movement of the clutch wheel 18 in accordance with the movement of the yoke 30 in the range from the first stage position to the second stage position of the winding stem 10.

[0046] A groove 41 is formed in a portion 42 of the switching link 40 that extends across the fulcrum C3 on the side opposite to the portion on which the iron wheel 50 is supported, and that extends to the tip of the portion 42. As a result, the portion 42 is divided into a counterclockwise portion 42a (second elastic portion) and a clockwise portion 42b, with the groove 41 in between.

[0047] Here, the counterclockwise side portion 42a is the portion that is pressed by the raceway pin 23 when the winding stem 10 is pulled from the first stage position to the second stage position, and is hereinafter referred to as the pull-side portion 42a. On the other hand, the clockwise side portion 42b is the portion that is pressed by the raceway pin 23 when the winding stem 10 is pushed from the second stage position to the first stage position, and is hereinafter referred to as the push-side portion 42b.

[0048] The pull-side portion 42a is an elastic portion that is flexible in a direction intersecting the longitudinal direction and can be elastically deformed, similar to the elastic piece 35 of the yoke 30. Therefore, even if the switching link 40 is maintained in a state where it does not rotate around the fulcrum C3, the track pin 23 engaged with the groove 41 allows movement that widens the width of the groove 41 so that the pull-side portion 42a elastically deforms counterclockwise. In other words, even if the switching link 40 is not in a state where it rotates around the fulcrum C3, the lovebird 20 is allowed to rotate within the range of elastic deformation of the pull-side portion 42a.

[0049] (0 position of stem 10) As shown in FIGS. 1 and 4, when the winding stem 10 is in the 0-stage position where the winding stem 10 is not pulled outward from the movement, the engagement pin 22 of the setting lever 20 engages with the first recess 81 a of the back holder 80 .

[0050] At the zero stage position, the winding pinion 15 and the clutch wheel 18 are set to mesh with each other on the axis of the winding stem 10. At the zero stage position of the winding stem 10, the rotation of the winding stem 10 around its axis is transmitted to the winding pinion 15 via the clutch wheel 18, and the winding pinion 15 rotates together with the winding stem 10.

[0051] At this time, the winding pinion 15 is engaged with a gear (not shown) of a gear train that winds up the mainspring of the barrel, which is the power source of the movement. Therefore, the winding stem interlocking mechanism 100 can wind up the mainspring by rotating the crown around the axis of the winding stem 10 when the winding stem 10 is in the 0-stage position.

[0052] Furthermore, the pressing portion 24 of the setting rod 20 is in contact with the pressed portion 31a of the yoke 30. In the 0th position, the clutch wheel 18 is not engaged with the setting wheel 50, which will be described later. Therefore, even if the crown is rotated around the axis of the winding stem 10 when the winding stem 10 is in the 0th position, the winding stem interlocking mechanism 100 does not rotate gear 2 of the gear train for rapid calendar correction of the timepiece 200 or gear 3 of the gear train for time correction of the timepiece 200.

[0053] (1st position of stem 10) 2 and 5, when the setting lever 20 is in the first stage position of the winding stem 10, the setting lever 20 rotates around the fulcrum C1, and the engaging pin 22 of the setting lever 20 engages with the second recess 81b of the backing member 80. In addition, the pressing portion 24 of the setting lever 20 is in contact with the pressed portion 31b of the yoke 30. As a result, the yoke 30 rotates around the fulcrum C2, and the engaging portion 36 displaces the clutch wheel 18 inward along the axial direction of the winding stem 10. As a result, the clutch wheel 18 separates from the set pinion 15 and enters a state of meshing with the setting wheel 50.

[0054] Therefore, when the winding stem interlocking mechanism 100 is in the first stage position of the winding stem 10 and the crown is rotated around the axis of the winding stem 10, the mainspring is not wound up, but gear 2 of the gear train for rapid calendar adjustment of the timepiece 200 is rotated, thereby enabling rapid adjustment of the calendar.

[0055] Between the 0th stage position and the 1st stage position, even if the loveseat 20 rotates around the fulcrum C1 and the track pin 23 is displaced, the switching link 40 does not displace because the groove 41 of the switching link 40 is formed to coincide with the trajectory of the displacement of the track pin 23. Therefore, the iron wheel 50 remains engaged with the gear 2.

[0056] (Second position of stem 10) 3 and 6, when the setting lever 20 is in the second stage position of the winding stem 10, the setting lever 20 rotates around the fulcrum C1, and the engaging pin 22 of the setting lever 20 engages with the third recess 81c of the back holder 80. In addition, the pressing portion 24 of the setting lever 20 is in contact with the pressed portion 31c of the yoke 30. As a result, the yoke 30 rotates around the fulcrum C2, and the engaging portion 36 displaces the clutch wheel 18 inward from the first stage position along the axial direction of the winding stem 10.

[0057] At this time, the setting wheel 50 meshed with the clutch wheel 18 is pressed inward from the clutch wheel 18 along the axial direction of the winding stem 10 relative to the first stage position.

[0058] On the other hand, between the first stage position and the second stage position, the loveseat 20 rotates around the fulcrum C1 and the raceway pin 23 is displaced, causing the switching link 40 to rotate around the fulcrum C3 so that the groove 41 of the switching link 40 follows the path of the raceway pin 23. As a result, the iron wheel 50 supported by the switching link 40 is displaced inward from the first stage position along the axial direction of the winding stem 10.

[0059] The displacement of the setting wheel 50 by the switching link 40 in the range between the first and second positions is formed to be synchronized with the displacement of the clutch wheel 18 in the range between the first and second positions. As a result, in the range from the first to second positions, the setting wheel 50 remains engaged with the clutch wheel 18 and displaces inward from the first position along the axial direction of the setting stem 10, and the setting wheel 50 separates from gear 2 and, at the second position, engages with gear 3 of the time correction gear train of the timepiece 200.

[0060] Therefore, when the winding stem interlocking mechanism 100 is in the second stage position of the winding stem 10, by rotating the crown around the axis of the winding stem 10, the timepiece 200 will not be wound up and the calendar will not be quickly adjusted, but the time can be adjusted.

[0061] When the winding stem 10 is returned from the second stage position to the first stage position, or from the first stage position to the zero stage position, the operation is the opposite of that described above.

[0062] The above is the normal operation of the timepiece 200 and winding stem interlocking mechanism 100 of this embodiment, but below we will explain the operation of the winding stem interlocking mechanism 100 when the tooth tip of the clutch wheel 18 and the tooth tip of the setting wheel 50 come into contact in the range from the 0th stage position to the 1st stage position of the winding stem 10, and the operation of the winding stem interlocking mechanism 100 when the tooth tip of the setting wheel 50 and the tooth tip of the gear 3 come into contact in the range from the 1st stage position to the 2nd stage position of the winding stem 10.

[0063] First, in the range from the 0th position to the 1st position of the winding stem 10, the clutch wheel 18 is displaced inward along the axial direction of the winding stem 10, but depending on the relative phase relationship between the teeth of the clutch wheel 18 and the teeth of the setting wheel 50, the tips of the teeth of the clutch wheel 18 (tooth tips) and the tips of the teeth of the setting wheel 50 (tooth tips) may butt against each other.

[0064] In this case, if the clutch wheel 18 or the setting wheel 50 rotates, causing the tooth tips to shift positions and eliminating the collision, the clutch wheel 18 and the setting wheel 50 will mesh normally. However, if the clutch wheel 18 and the setting wheel 50 remain in abutment and neither rotates at all, the clutch wheel 18 and the setting wheel 50 will not mesh, and the distance between the clutch wheel 18 and the setting wheel 50 will be longer than the relative positional relationship between the two when they are in mesh.

[0065] In a winding stem interlocking mechanism to which the present invention is not applied, the clutch wheel 18 stops before the first stage position that it should reach, and as a result, the winding stem 10 cannot be pulled to the first stage position. If the winding stem 10 cannot be pulled to the original first stage position, the engagement pin 22 of the setting lever 20 does not engage with the second recess 81b of the backing member 80, and therefore the user's fingers who pull the winding stem 10 do not feel the sense of detent that should be felt when pulling it to the first stage position. Therefore, the user feels uncomfortable because they do not feel the sense of detent.

[0066] Furthermore, in a winding stem interlocking mechanism to which the present invention is not applied, the clutch wheel 18 and the setting wheel 50 are not engaged, and therefore the winding stem interlocking mechanism 100 cannot perform rapid correction of the calendar even if the crown is rotated around the axis of the winding stem 10. Furthermore, if the tooth tips of the clutch wheel 18 and the setting wheel 50 butt strongly together, the crown cannot be rotated smoothly.

[0067] In contrast to this, in the winding stem interlocking mechanism 100 of this embodiment, when the clutch wheel 18 is displaced inward along the axial direction of the winding stem 10 in the range from the 0th stage position to the 1st stage position of the winding stem 10 and the tooth tip of the clutch wheel 18 butts against the tooth tip of the setting wheel 50, the clutch wheel 18 does not displace to its original 1st stage position (see FIG. 2), but the elastic piece 35 is elastically deformed and bent, allowing the yoke 30 to rotate to its original 1st stage position.

[0068] This allows the setting lever 20 to be displaced to its original one-stage position, and the winding stem 10 can be pulled to the one-stage position. As a result, the engagement pin 22 of the setting lever 20 engages with the second recess 81b of the back holder 80, and the user's fingers who pull the winding stem 10 are given the same feeling of moderation that is obtained when pulling it to the one-stage position, and the user can recognize that it has been pulled to the one-stage position.

[0069] When the user rotates the crown to quickly correct the calendar while the winding stem 10 is pulled to the first position, the clutch wheel 18 rotates together with the winding stem 10, thereby releasing the abutment between the tip of the tooth of the clutch wheel 18 and the tip of the tooth of the setting wheel 50. Because an elastic force generated by the bending of the elastic piece 35 of the yoke 30 acts on the clutch wheel 18, when the abutment with the tip of the tooth of the setting wheel 50 is released, the clutch wheel 18 is displaced toward the setting wheel 50, and the clutch wheel 18 advances to its original first position and meshes with the setting wheel 50.

[0070] As a result, the movement of rotating the crown is transmitted to the setting wheel 50 via the clutch wheel 18, and the rotation of the setting wheel 50 is transmitted to the gear 2, allowing the calendar to be quickly corrected.

[0071] In the winding stem interlocking mechanism 100 of this embodiment, the clutch wheel 18 is supported by the elastic piece 35 of the yoke 30, so the clutch wheel 18 can be displaced in the axial direction within the range of elastic deformation of the elastic piece 35. Therefore, even if the abutment between the tip of the tooth of the clutch wheel 18 and the tip of the tooth of the setting wheel 50 is strong, the clutch wheel 18 can be displaced outward in the axial direction within the range of elastic deformation of the elastic piece 35, thereby weakening the abutment between the tip of the tooth of the clutch wheel 18 and the tip of the tooth of the setting wheel 50 and allowing the crown to rotate smoothly.

[0072] Next, in the range from the first stage position to the second stage position of the winding stem 10, the clutch wheel 18 and the setting wheel 50 are displaced inward along the axial direction of the winding stem 10 as a unit, but depending on the relative phase relationship between the teeth of the setting wheel 50 and the teeth of the gear 3, the tips of the teeth of the setting wheel 50 and the tips of the teeth of the gear 3 (tooth tips) may butt up against each other.

[0073] In this case, if the rotation of the setting wheel 50 or the gear 3 causes the tooth tips to shift positions and the collision is resolved, the setting wheel 50 and the gear 3 will mesh normally. However, if the setting wheel 50 and the gear 3 remain in collision and neither rotates at all, the setting wheel 50 and the gear 3 will not mesh, and the distance between the setting wheel 50 and the gear 3 will be longer than the relative positional relationship between the setting wheel 50 and the gear 3 when they are in mesh.

[0074] In a winding stem interlocking mechanism to which the present invention is not applied, the clutch wheel 18 and the setting wheel 50 stop short of the second-stage position that they should reach, and as a result, the winding stem 10 cannot be pulled to the second-stage position. If the winding stem 10 cannot be pulled to the second-stage position that it should be, the engagement pin 22 of the setting rod 20 does not engage with the third recess 81c of the backing member 80, and therefore the fingers of the user who pulls the winding stem 10 do not feel the sense of detent that should be felt when pulling it to the second-stage position. Therefore, the user feels uncomfortable because they do not feel the sense of detent.

[0075] Furthermore, in a winding stem interlocking mechanism to which the present invention does not apply, the setting wheel 50 and the gear 3 are not meshed, so the winding stem interlocking mechanism 100 cannot adjust the time even if the crown is rotated around the axis of the winding stem 10. Furthermore, if the tip of the tooth of the setting wheel 50 and the tip of the tooth of the gear 3 butt together too hard, the crown cannot be rotated smoothly.

[0076] Here, in the winding stem interlocking mechanism 100 of this embodiment, the clutch wheel 18 is displaced inward along the axial direction of the winding stem 10 in the range from the first stage position to the second stage position of the winding stem 10, and when the clutch wheel 18 and the setting wheel 50 are engaged and displaced together inward along the axial direction of the winding stem 10, and the tip of the tooth of the setting wheel 50 butts against the tip of the tooth of the gear 3, the clutch wheel 18 and setting wheel 50 do not displace to their original second stage position (see Figure 3).

[0077] However, even if the clutch wheel 18 is not displaced to the original two-stage position, the winding stem interlocking mechanism 100 allows the elastic piece 35 of the yoke 30 to bend due to elastic deformation, so that the yoke 30 can be rotated to the original two-stage position, thereby making it possible to rotate the setting rod 20 to the original two-stage position.

[0078] Here, in order to rotate the lovebirds 20 to their original two-stage position, it is necessary to rotate the switching link 40 to the two-stage position so that the groove 41 of the switching link 40 follows the trajectory of the track pin 23 to the two-stage position, but the switching link 40 cannot rotate to the two-stage position because the pinion 50 abuts against the gear 3.

[0079] However, in the winding stem interlocking mechanism 100, the pull-side portion 42a of the switching link 40 is elastically deformed and bent, so that the groove 41 of the switching link 40 is widened to follow the displacement of the track pin 23. This makes it possible to rotate the setting cock 20 to its original two-stage position.

[0080] In this way, the winding stem interlocking mechanism 100 can displace the setting rod 20 to its original two-stage position by means of the elastic piece 35 of the yoke 30 and the elastically deformable pull-side portion 42a of the switching link 40, and can pull the winding stem 10 to the two-stage position.

[0081] As a result, the engagement pin 22 of the setting lever 20 engages with the third recess 81c of the back clamp 80, and the user's fingers who pull the winding stem 10 are given the same feeling of moderation that is obtained when pulling it to the second stage position, allowing the user to recognize that it has been pulled to the second stage position.

[0082] When the user rotates the crown to adjust the time with the winding stem 10 pulled to the second stage position, the clutch wheel 18 and the setting wheel 50 rotate together with the winding stem 10, thereby releasing the abutment between the tip of the tooth of the setting wheel 50 and the tip of the tooth of the gear 3.

[0083] An elastic force generated by the bending of the elastic piece 35 of the yoke 30 acts on the clutch wheel 18, and an elastic force generated by the bending of the pull-side portion 42a of the switching link 40 acts on the setting wheel 50, so when the abutment between the tip of the tooth of the setting wheel 50 and the tip of the tooth of the gear 3 is released, the setting wheel 50 displaces toward the gear 3 together with the clutch wheel 18, and the clutch wheel 18 and setting wheel 50 each advance to their original two-stage positions, and the setting wheel 50 and gear 3 mesh together.

[0084] As a result, the rotation of the crown is transmitted to the clutch wheel 18 and the setting wheel 50, and the rotation of the setting wheel 50 is transmitted to the gear 3, allowing the time to be adjusted.

[0085] In the winding stem interlocking mechanism 100 of this embodiment, the clutch wheel 18 is supported by the elastic piece 35 of the yoke 30, and the setting wheel 50 is supported by the pull-side portion 42a of the switching link 40, so the clutch wheel 18 can be displaced in the axial direction within the range in which the elastic piece 35 can be elastically deformed, and the setting wheel 50 can be displaced in the axial direction within the range in which the pull-side portion 42a can be elastically deformed.

[0086] Therefore, even if the contact between the tip of the tooth of the setting wheel 50 and the tip of the tooth of the gear 3 is strong, the clutch wheel 18 can be displaced outward in the axial direction within the range of elastic deformation of the elastic piece 35, and the setting wheel 50 can be displaced outward in the axial direction within the range of elastic deformation of the pull-side portion 42a, thereby weakening the contact between the tip of the tooth of the setting wheel 50 and the tip of the tooth of the gear 3 and allowing the crown to rotate.

[0087] As explained in detail above, the winding stem interlocking mechanism 100 and timepiece 200 of this embodiment can pull out the winding stem 10 from the 0-stage position to the 1-stage position even when the clutch wheel 15 and the setting wheel 50 butt against each other, and can pull out the winding stem 10 from the 1-stage position to the 2-stage position even when the setting wheel 50 and the gear 3 in the time-setting wheel train hit each other.

[0088] The winding stem interlocking mechanism 100 and timepiece 200 of this embodiment solve the problems of the winding stem 10 hitting the first stage position and the second stage position by using two characteristic configurations: the elastic piece 35 of the yoke 30 and the elastically deformable pull-side portion 42a of the switching link 40; if either one of the configurations is missing, it is not possible to eliminate the problems of the winding stem 10 hitting the first stage position and the second stage position.

[0089] In the winding stem interlocking mechanism 100 of this embodiment, when the winding stem 10 is in the 0-stage position, the clutch wheel 18 engages with the timing wheel 15, rotating the winding stem 10 and thereby performing the function of winding up the mainspring of the timepiece 200; when the winding stem 10 is in the 1-stage position, the clutch wheel 18 engages with the setting wheel 50 that is engaged with gear 2, rotating the winding stem 10 and thereby performing the function of quickly correcting the calendar of the timepiece 200; and when the winding stem 10 is in the 2-stage position, the clutch wheel 18 engages with the setting wheel 50 that is engaged with gear 3, rotating the winding stem 10 and thereby performing the function of correcting the time of the timepiece 200.

[0090] However, in the winding stem interlocking mechanism according to the present invention, the function exerted by rotating the winding stem at the 0th position of the winding stem is not limited to the function of winding the mainspring, the function exerted by rotating the winding stem at the 1st position of the winding stem is not limited to the function of rapid calendar adjustment, and the function exerted by rotating the winding stem at the 2nd position of the winding stem is not limited to the function of time adjustment.

[0091] In the winding stem interlocking mechanism 100 and timepiece 200 of the above-described embodiment, even if, when the winding stem 10 is pulled axially to the second stage position, the clutch wheel 18 does not reach the original second stage position and the setting wheel 50 does not reach the original second stage position due to the teeth abutting against each other, the length that does not reach the original second stage is absorbed by the elastic deformation of the elastic piece 35 of the yoke 30 and the elastic deformation of the pull-side portion 42a of the switching link 40, so that the winding stem 10 can be pulled to the original second stage position.

[0092] However, the elastic deformation of the elastic piece 35 of the yoke 30 can cause the clutch wheel 18, which is in its original second-stage position, to be displaced toward its first-stage position. In other words, when the winding stem 10, the clutch wheel 18, and the setting wheel 50 are each in their original second-stage positions, the setting wheel 50 meshes with the gear 3 and receives a reaction torque from the gear 3.

[0093] The pinion 50, which receives a reaction torque from the gear 3, tries to move in a direction away from the gear 3. At this time, if the switching link 40 is rigidly combined with the loveseat 20, the switching link 40 will not rotate unless the winding stem 10 is displaced in the direction from the second stage position to the first stage position.

[0094] However, the portion where the switching link 40 and the setting rod 20 engage is elastically combined by elastic deformation of the pull-side portion 42a of the switching link 40. Therefore, even if the setting stem 10 is not displaced from the second stage position to the first stage position, the pull-side portion 42a of the switching link 40 can elastically deform, causing the setting wheel 50 to move in a direction away from the gear 3. Moreover, the clutch wheel 18 also receives a reaction torque from the meshing setting wheel 50, and can be displaced in the direction of the first stage position by elastic deformation of the elastic piece 35 of the yoke 30.

[0095] If the setting wheel 50 is displaced in a direction away from the gear 3, the degree of meshing between the setting wheel 50 and the gear 3 decreases, which can cause a problem of reduced efficiency in torque transmission between them. Similarly, if the clutch wheel 18 is displaced in a direction away from the setting wheel 50, the degree of meshing between the teeth of the clutch wheel 18 and the setting wheel 50 decreases, which can cause a problem of reduced efficiency in torque transmission between them.

[0096] Furthermore, if the displacement of the setting wheel 50 or the clutch wheel 18 is large, the meshing described above may come off, causing only the setting wheel 50 or only the clutch wheel 18 to spin freely, which may result in the problem of being unable to transmit rotation.

[0097] The modified winding stem interlocking mechanism 100 described below is a suitable example that solves these problems in the above-described embodiment.

[0098] (Variation 1) Fig. 7 is a plan view equivalent to Fig. 1 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 1, showing a state in which the yoke 30 is positioned in its original 0-stage position. Fig. 8 is a plan view equivalent to Fig. 3 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 1, showing a state in which the yoke 30 is positioned in its original 2-stage position.

[0099] 7, the winding stem interlocking mechanism 100 of the first modified example has two abutment portions 37, 39 formed on a part of the elastic piece 35 of the yoke 50. Here, the abutment portion 37 does not abut against a stationary fixed portion 91 formed on the main plate, train wheel bridge, etc. when the yoke 30 is in the original 0-stage position and 1-stage position, but is formed so as to abut against the fixed portion 91 just before the original 2-stage position of the yoke 30 (towards the 1-stage position).

[0100] Furthermore, the abutment portion 39 is formed so that when the abutment portion 37 abuts against the fixed portion 91 just before the original two-stage position and the yoke 30 is displaced to the original two-stage position, the abutment portion 39 abuts against the rigid fixed portion 38 of the yoke 30, which is not the elastic piece 35, when the elastic piece 35 is elastically deformed, as shown in Figure 8.

[0101] According to the winding stem interlocking mechanism 100 and timepiece 200 of variant 1 that includes the yoke 30 formed in this way, when the clutch wheel 18 is displaced to its original two-stage position, as shown in FIG. 8, the abutment portion 37 formed on the elastic piece 35 comes into contact with an immovable fixed portion 91 such as the main plate or train wheel bridge, and the elastic piece 35 elastically deforms in the direction of pulling out the winding stem 10 outward.

[0102] Due to the elastic deformation of this elastic piece 35, an elastic force acts on the clutch wheel 18, which is engaged with the engagement portion 36 at the tip of the elastic piece 35, in a direction pushing it from its original two-stage position toward the inside of the winding stem 10. Then, with the elastic piece 35 in a state in which it is elastically deformed, the other abutment portion 39 abuts against the fixed portion 38, which is an immovable rigid portion of the yoke 30 that has rotated around C2 (a portion that does not elastically deform, excluding the elastic piece 35).

[0103] Here, the fixed portion 38 of the yoke 30 is formed further outward in the axial direction of the winding stem 10 than the abutting portion 39, and the fixed portion 38 contacts the abutting portion 39 from the outside in the axial direction of the winding stem 10. As a result, when the yoke 30 is in the original two-stage position, the elastic piece 35 is prevented from elastically deforming further outward in the axial direction of the winding stem 10 than in a state in which the abutting portion 39 abuts against the fixed portion 38.

[0104] Therefore, even if the clutch wheel 18 receives a reaction torque from the set wheel 50 with which it is meshed, it is not displaced in a direction away from the set wheel 50, and it is possible to prevent a decrease in the transmission efficiency of the torque transmitted between the clutch wheel 18 and the set wheel 50.

[0105] Depending on the dimensional tolerance between the abutment portion 39 and the fixed portion 38, the abutment portion 39 and the fixed portion 38 may abut against each other before the latch 30 reaches its original two-stage position. In this case, the latch 30 may not be able to reach its original two-stage position, or the latch 30 may be plastically deformed.

[0106] To avoid such a situation, it is preferable to form the surfaces of the abutting portion 39 and the fixing portion 38 at an angle so that the contact positions slide and shift relative to each other between the surfaces where the abutting portion 39 and the fixing portion 38 contact each other, thereby allowing the latch 30 to be displaced to its original two-stage position.

[0107] (Variation 2) Fig. 9 is a plan view equivalent to Fig. 4 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 2, showing a state in which the switching link 40 is arranged in its original 0-stage position. Fig. 10 is a plan view equivalent to Fig. 6 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 2, showing a state in which the switching link 40 is arranged in its original 2-stage position.

[0108] 10, in the winding stem interlocking mechanism 100 of the second modified example, an abutting portion 42c is formed on part of the pull-side portion 42a of the switching link 40. Here, the abutting portion 42c is formed so that it does not abut against an immovable fixed portion 93 formed on the main plate, train wheel bridge, etc. when the switching link 40 is in the original 0-stage position or 1-stage position, but abuts against the fixed portion 93 when the switching link 40 is in the original 2-stage position.

[0109] In the case of the stem interlocking mechanism 100 and timepiece 200 of modified example 2 which includes the switching link 40 formed in this way, as shown in FIG. 10, when the switching link 40 is displaced to its original two-stage position, the abutment portion 42c formed on the elastic piece 35 of the pull-side portion 42a comes into contact with an immovable fixed portion 93 of the main plate, train wheel bridge, or the like, preventing further elastic deformation of the pull-side portion 42a, and preventing the switching link 40 from moving beyond its original two-stage position.

[0110] Therefore, even if the setting wheel 50 rotates, for example, clockwise and is subjected to a force that pulls the setting wheel 50 toward the gear 3 with which it is meshed, the setting wheel 50 will not be displaced in a direction approaching the gear 3, preventing a decrease in the transmission efficiency of the torque transmitted between the setting wheel 50 and the gear 3, or an increase in friction between the tooth surfaces of the tooth tips and tooth bases of the setting wheel 50 and the gear 3, which would result in an abnormal operating feel (such as an increase in operating force or an unsmooth, rough, or other such operating feel).

[0111] (Variation 3) Fig. 11 is a plan view equivalent to Fig. 4 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 3, showing a state in which the switching link 40 is arranged in its original 0-stage position. Fig. 12 is a plan view equivalent to Fig. 6 showing the winding stem interlocking mechanism 100 and timepiece 200 of modified example 3, showing a state in which the switching link 40 is arranged in its original 2-stage position.

[0112] 11, in the winding stem interlocking mechanism 100 of the third modified example, an elastically deformable abutment portion 44 is formed in the vicinity of the portion of the switching link 40 where the setting wheel 50 is supported, which is the portion of the switching link 40 opposite the portion where the groove 41 is formed across the fulcrum C3. Here, the abutment portion 44 does not come into contact with an immovable fixed portion 92 formed on the main plate, train wheel bridge, etc., when the switching link 40 is in its original 0th stage position or 1st stage position, but is formed so as to abut against the fixed portion 92 at a position before the original 2nd stage position of the switching link 40.

[0113] In the stem interlocking mechanism 100 and timepiece 200 of modified example 3 which include the switching link 40 formed in this way, as shown in FIG. 12, when the switching link 40 is in its original two-stage position, the abutment portion 44 abuts against an immovable fixed portion 92 such as the main plate or train wheel bridge, and the switching link 40 does not move beyond its original two-stage position.

[0114] Therefore, even if the setting wheel 50 rotates, for example, clockwise and is subjected to a force that pulls the setting wheel 50 toward the gear 3 with which it is meshed, the setting wheel 50 will not be displaced in a direction approaching the gear 3, preventing a decrease in the transmission efficiency of the torque transmitted between the setting wheel 50 and the gear 3, or an increase in friction between the tooth surfaces of the tooth tips and tooth bases of the setting wheel 50 and the gear 3, which would result in an abnormal operating feel (such as an increase in operating force or an unsmooth, rough, or other such operating feel).

[0115] Note that the winding stem interlocking mechanism 100 according to the present invention can also be modified by combining the above-mentioned Modification 2 (FIGS. 9 and 10) and Modification 3 (FIGS. 11 and 12). In this case, if a gap is formed between the abutment portion 42c and the fixed portion 93 at the two-stage position of the switching link 40 due to the tolerance of the switching link 40 in Modification 2 (the tolerance of the protruding height of the abutment portion 42c and the effect of the groove width of the groove 41), the position of the setting wheel 50 at the two-stage position may become unstable and wobble.

[0116] In this case, by forming the abutment portion 44 of variant example 3 to abut against the fixed portion 92 just before the original two-stage position of the switching link 40, when the switching link 40 is in the original two-stage position, the abutment portion 44 is in an elastically deformed state abutting against the fixed portion 92.As a result, even if a gap is formed between the abutment portion 42c and the fixed portion 93 when the switching link 40 is in the two-stage position, the position of the iron wheel 50 does not become unstable, and wobbling of the iron wheel 50 can be prevented.

[0117] The winding stem interlocking mechanism 100 of the above-described variant 1 is an example of resolving issues that may arise due to the presence of the elastic piece 35 in the yoke 30, and is therefore not only applicable to winding stems 10 that have three positions, namely, the 0th position, the 1st position, and the 2nd position, but can also be applied to winding stems 10 that have two positions, namely, the 0th position and the 1st position.

[0118] Furthermore, the winding stem interlocking mechanism 100 of the above-described modified examples 2 and 3 is an example of resolving a problem that may arise due to the switching link 40 having the pull-side portion 42a that can be elastically deformed, and therefore is not only applicable to winding stems 10 that have three positions, namely, the 0th position, the 1st position, and the 2nd position, but can also be applied to winding stems 10 that have two positions, namely, the 0th position and the 1st position. [Explanation of symbols]

[0119] 10 Scroll 18 Drum Wheel 20 Mandarin 30 Lock 35 Elastic piece (first elastic portion) 36 Engagement part 40 Switching link (switching member) 41 Groove 42a: Pull-side portion (second elastic portion) 50 Small Railway Car 100 Winding stem interlocking mechanism 200 watches C1,C2,C3 fulcrum

Claims

1. a winding stem that can be pulled out from a 0-stage position where it is pushed in most in the axial direction to a 1-stage position pulled out in the axial direction from the 0-stage position, and to a 2-stage position pulled out further in the axial direction from the 1-stage position; a setting rod connected to the winding stem and rotating in response to movement of the winding stem in the axial direction; a yoke that rotates in response to rotation of the setting rod to move a clutch wheel provided on the shaft of the winding stem in the axial direction; a set wheel that meshes with the clutch wheel at the first stage position and the second stage position of the winding stem; a switching member that engages with the setting lever and moves the setting wheel by being displaced between the first stage position and the second stage position of the winding stem in accordance with the rotational position of the setting lever, The latch has a first elastic portion that can be elastically deformed between an engagement portion that engages with the clutch wheel and a fulcrum that serves as a center of rotation, the switching member has a second elastic portion that can elastically deform a portion that comes into contact with the timing rod, The first elastic portion is formed to extend so that the engagement portion is its free end, and when the clutch wheel is not displaced, it urges the clutch wheel toward the iron wheel while elastically deforming to allow the setting rod in contact with the yoke to rotate, in a winding stem interlocking mechanism.

2. The latch has a first abutment portion and a second abutment portion formed on the first elastic portion, The first abutment portion is formed so as not to abut against a fixed portion at the original 0-stage position of the yoke corresponding to the 0-stage position of the winding stem and at the 1-stage position of the yoke corresponding to the 1-stage position of the winding stem, but to abut against the fixed portion in a state in which the first elastic portion is elastically deformed at the original 2-stage position of the yoke corresponding to the 2-stage position of the winding stem, 2. The winding stem interlocking mechanism according to claim 1, wherein the second abutment portion does not abut against a fixed portion formed on a rigid portion that is not the first elastic portion of the yoke when the yoke is in its original 0-stage position or its original 1-stage position, but is formed so as to abut against a fixed portion formed on the rigid portion when the yoke is in its original 2-stage position with the first elastic portion elastically deformed.

3. 3. The winding stem interlocking mechanism according to claim 1 or 2, wherein the second elastic portion is formed on a portion opposite to a portion that supports the setting wheel, across a fulcrum that serves as a rotation center, and elastically deforms to allow rotation of the setting rod engaged with the switching member when the setting wheel is not displaced.

4. The switching member has a second abutment portion formed on the second elastic portion, 4. The winding stem interlocking mechanism according to claim 3, wherein the second abutment portion does not abut against a fixed portion at the original 0-stage position of the switching member corresponding to the 0-stage position of the winding stem and at the 1-stage position of the switching member corresponding to the 1-stage position of the winding stem, but abuts against the fixed portion at the original 2-stage position of the switching member corresponding to the 2-stage position of the winding stem.

5. The switching member has a third abutment portion formed thereon that is elastically deformable near where the small iron wheel is supported, 4. The winding stem interlocking mechanism according to claim 3, wherein the third abutment portion does not abut against an immovable portion at the original 0-stage position of the switching member corresponding to the 0-stage position of the winding stem and at the 1-stage position of the switching member corresponding to the 1-stage position of the winding stem, but abuts against the immovable portion at the original 2-stage position of the switching member corresponding to the 2-stage position of the winding stem.

6. a winding stem interlocking mechanism according to claim 1 or 2; a plurality of gear trains that mesh with the winding stem interlocking mechanism at the 0-stage position, the 1-stage position, and the 2-stage position of the winding stem, respectively.

7. the winding stem interlocking mechanism according to claim 3; a plurality of gear trains that mesh with the winding stem interlocking mechanism at the 0-stage position, the 1-stage position, and the 2-stage position of the winding stem, respectively.

8. A winding stem interlocking mechanism according to claim 4; a plurality of gear trains that mesh with the winding stem interlocking mechanism at the 0-stage position, the 1-stage position, and the 2-stage position of the winding stem, respectively.

9. A winding stem interlocking mechanism according to claim 5; a plurality of gear trains that mesh with the winding stem interlocking mechanism at the 0-stage position, the 1-stage position, and the 2-stage position of the winding stem, respectively.

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