JP7792890B2 - Winding stem interlocking mechanism and clock - Google Patents

Description

The present invention relates to a winding stem interlocking mechanism and a timepiece.

A watch's winding stem 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.

The winding stem can also 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 turned, the mainspring is not wound, but the time display hand is rotated to set the time.

Some winding stems can be pulled out further from the first position. In this case, in the first position, operations such as quickly adjusting the calendar date can be performed, and when pulled out further from the first position to the second position (hereinafter referred to as the second position), the time can be set.

The functions that correspond to the above-mentioned winding stem extension position (spring winding, quick calendar correction, time setting, etc.) are realized by a winding stem interlocking mechanism that includes a winding stem, a setting lever, a yoke, a clutch wheel, a timing pinion, a set wheel, and a switching member that displaces the position of the set wheel (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2006-266700

However, 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 set 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 its original, set position. In this case, the user of the watch may mistakenly believe that the winding stem has been pulled out to the first position, 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).

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, the minute intermediate wheel) with which the setting wheel should mesh, the setting wheel cannot move to the position it should, and the winding stem may not be pulled out to its original two-stage position. In this case, the user of the watch may mistakenly believe that the winding stem has been pulled out to the two-stage position, and even if they turn the crown in that state, they will not be able to perform the desired operation (for example, set the time).

The present invention has been developed in consideration of the above circumstances, and aims to provide a winding stem interlocking mechanism that allows the winding stem to be pulled out to the first position even when the clutch wheel and the setting wheel butt against each other, and that allows the winding stem to 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, and a timepiece equipped with this winding stem interlocking mechanism.

The 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 mounted 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 displacing 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 serves as 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.

A second aspect of the present invention is a timepiece comprising the winding stem interlocking mechanism of the present invention and multiple 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.

With the winding stem interlocking mechanism and timepiece of the present invention, the winding stem can be pulled out to the first position even if the clutch wheel and the setting wheel butt together, and the winding stem can be pulled out to the second position even if the setting wheel and a gear in the time-setting wheel train butt together.

This is a plan view of the main parts of the winding stem interlocking mechanism provided in the timepiece, showing the arrangement of the winding stem, timing pinion, clutch wheel, timing pin, yoke and pinion when the winding stem is in the 0 position. 2 shows the arrangement of the winding stem, the timing pinion, the clutch wheel, the setting pinion, the yoke, and the set pinion of the winding stem interlocking mechanism shown in FIG. 1 in the first stage position of the winding stem. 1 shows the arrangement of the winding stem, the timing pinion, the clutch wheel, the setting pinion, the yoke, and the set pinion in the two-stage position of the winding stem of the winding stem interlocking mechanism shown in 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 pinion and switching member when the winding stem is in the 0 position. 5 shows the winding stem interlocking mechanism shown in FIG. 4, showing the arrangement of the winding stem, the setting lever, the setting wheel and the switching member when the winding stem is in the first stage position. 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 in the two-stage position of the winding stem. 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. 3 , showing the stem interlocking mechanism 100 and timepiece 200 of Modified Example 1, and showing the state in which the yoke is positioned in the original two-stage position. 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. 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 disposed in the original two-stage position. 4, showing the winding stem interlocking mechanism and timepiece of modified example 3, in a state where the switching link is disposed in the original 0-stage position. 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 disposed in the original two-stage position.

Embodiments of the winding stem interlocking mechanism and timepiece according to the present invention will be described below with reference to the drawings.

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

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

The winding stem interlocking mechanism 100 shown in Figures 1 to 6 is one embodiment of the winding stem interlocking mechanism according to the present invention. Furthermore, the timepiece 200, a portion of which is shown in Figures 1 to 6, is one embodiment of the timepiece according to the present invention.

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 backing 80.

The winding stem 10 is an external operating member exposed to the outside of the movement of the timepiece 200 in order to operate the movement 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 along the axial direction to the outside of the movement by pinching the crown with the fingers.

The winding stem 10 can be pulled out to a 0 position, which is when it is not pulled out (fully pushed in), a 1 position, which is when it is pulled out one position, and a 2 position, which is when it is pulled out further than the 1 position and is fully pulled out. The 0 position, 1 position, and 2 position of the winding stem 10 are set by the back clamp 80, which will be described later. By rotating the crown around the axis of the winding stem 10 in the 0 position, 1 position, and 2 position of the winding stem 10, the various operations, which will be described later, can be performed on the movement.

The pinion 15 is mounted 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, 1st, and 2nd positions 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 is.

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

The setting lug 20 is rotatable around the fulcrum C1. The setting lug 20 has a pivot support 21, which is located away from the fulcrum C1, rotatably connected to the winding stem 10. A pressing portion 24, separate from the pivot support 21 and located away from the fulcrum C1, of the setting lug 20 is in contact with the yoke 30, which will be described later. When the winding stem 10 is displaced in the axial direction, the pivot support 21 moves, causing the setting lug 20 to rotate around the fulcrum C1 and changing the position of the yoke 30 with which the pressing portion 24 contacts.

In other words, the posture of the setting rod 20 around the fulcrum C1 changes at each of the 0th, 1st, and 2nd positions of the winding stem 10, and the portion 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.

An engagement pin 22 that engages with the back retainer 80 is formed near the pressing portion 24 of the setting sun 20.

The backing member 80 is formed with a first recess 81a (shown in Figure 1), a second recess 81b (shown in Figure 2) adjacent to the first recess 81a, and a third recess 81c (shown in Figure 3) adjacent to the second recess 81b. The backing member 80 is elastically deformable so that it can bend downward as shown. Therefore, when the setting rod 20 rotates, the engagement pin 22 bends the backing member 80 downward, engaging with the first recess 81a, the second recess 81b, or the third recess 81c.

When the engagement pin 22 engages with each recess 81a, 81b, 81c, the setting rod 20 is stationary and does not wobble, and the winding stem 10 is stationary in each engagement state.

In other words, when the engagement pin 22 engages with the first recess 81a, the winding stem 10 is positioned at the 0-stage position; when the engagement pin 22 engages with the second recess 81b, the winding stem 10 is positioned at the 1-stage position; and when the engagement pin 22 engages with the third recess 81c, the winding stem 10 is positioned at the 2-stage position.

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

The yoke 30 is rotatable around the fulcrum C2. The yoke 30 contacts 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 contacts the pressing portion 24 of the setting lever 20 moves in accordance with the position of the setting lever 20 around the fulcrum C1.

In other words, 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 fulcrum C2, changing its posture around fulcrum C2.

The latch 30 has an engagement portion 36, which is located away from the fulcrum C2, that 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 latch 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 is flexible in a direction intersecting the longitudinal direction, allowing it to elastically deform.

When the yoke 30 rotates around the fulcrum C2, the position of the engagement portion 36 changes at each of the 0th, 1st, and 2nd positions of the winding stem 10, changing the position of the clutch wheel 18 relative to the winding stem 10.

In addition, 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. Therefore, 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, the amount of elastic deformation is very small.

A portion of the yoke 30, not shown, on the opposite side of the engaging portion 36 across the fulcrum C2 provides an elastic force that resists displacement of the yoke 30 in the counterclockwise direction shown. 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, with the counterclockwise side edge of this elastically deformable portion being formed so as to abut against the main plate of the movement, etc.

As a result, the portion of the yoke 30 on which the engagement portion 36 is formed rotates counterclockwise around fulcrum C2. This rotation causes the side edge of the elastically deformable portion on the opposite side of the engagement portion 36 to abut against a base plate or the like and undergo elastic deformation, applying a biasing force to the yoke 30 to rotate clockwise around fulcrum C2. As a result, while the yoke 30 rotates counterclockwise, a torque acts on it that tries to return it to a clockwise position.

The elastically deformable portion that applies a biasing 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 separate spring member that is in contact with or attached to the yoke 30.

The iron wheel 50 is located on an extension of the axis of the winding stem 10 in a plan view. The iron 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 response to the rotation of the switching link 40 about fulcrum C3 (see Figures 4 to 6).

Specifically, when the winding stem 10 is in the range from the 0th position to the 1st position, the iron wheel 50 does not displace and is in a position where it meshes with gear 2, but when the winding stem 10 is in the range from the 1st position to the 2nd position, it displaces away from gear 2 and moves to a position where it meshes with gear 3.

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.

As shown in Figures 4 to 6, the switching link 40 is supported rotatably around fulcrum C3, and rotatably supports the iron wheel 50 at one end remote from fulcrum C3. The switching link 40 moves the iron wheel 50 by rotating around fulcrum C3 between the first and second positions of the winding stem 10 in accordance with the rotational position of the setting rod 20.

A specified groove 41 extending longitudinally from the tip of the switching link 40 is formed in the portion 42 that extends across fulcrum C3 from the portion that supports the iron wheel 50. The track pin 23 formed on the setting sun 20 engages with this groove 41. As a result, when the setting sun 20 rotates around fulcrum C1, causing the track pin 23 to rotate, the switching link 40 rotates around fulcrum C3 so that the groove 41 follows the movement of the track pin 23, resulting in the iron wheel 50 being displaced between gear 2 and gear 3. In other words, the groove 41 is a guide groove that changes the position of the switching link 40 around fulcrum C3 in response to the movement of the track pin 23.

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

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. However, when the winding stem 10 is in the 1-stage position, the clutch wheel 18 is displaced by the yoke 30 into a position where it meshes with the setting wheel 50. Between the 1-stage and 2-stage positions of the winding stem 10, the meshing between the clutch wheel 18, which is displaced by the yoke 30, and the setting wheel 50, which is 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.

Therefore, the groove 41 is formed in a shape that synchronizes the movement of the setting wheel 50 supported by the switching link 40, which follows 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, which follows the movement of the yoke 30 in the range from the first stage position to the second stage position of the winding stem 10.

A groove 41 is formed in the portion 42 of the switching link 40 that extends across the fulcrum C3 on the side opposite the portion on which the iron wheel 50 is supported, and that extends all the way 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.

Here, the counterclockwise 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 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.

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

(0 position of winding 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 .

In the 0-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. When the winding stem 10 is in the 0-stage position, 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.

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

In addition, 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 adjustment of the timepiece 200 or gear 3 of the gear train for time adjustment of the timepiece 200.

(1st stage position of winding stem 10)
2 and 5, when the winding stem 10 is in the first stage position, 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.

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, and gear 2 of the timepiece 200's rapid calendar adjustment gear train is rotated, allowing the calendar to be quickly adjusted.

In addition, between the 0th stage position and the 1st stage position, even if the settee 20 rotates around the fulcrum C1 and the track pin 23 is displaced, the switching link 40 does not displace because the groove 41 in the switching link 40 is formed to match the trajectory of the displacing track pin 23. Therefore, the iron wheel 50 remains engaged with the gear 2.

(Second stage position of winding stem 10)
3 and 6, when the winding stem 10 is in the second stage position, 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.

At this time, the set 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 beyond the first stage position.

On the other hand, between the first and second stages, the setting rod 20 rotates around fulcrum C1 and the track pin 23 is displaced, causing the switching link 40 to rotate around fulcrum C3 so that the groove 41 in the switching link 40 follows the path of the track 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.

The displacement of the setting wheel 50 by the switching link 40 between the first and second positions is synchronized with the displacement of the clutch wheel 18 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, but displaces inward from the first position along the axial direction of the setting stem 10, disengaging from gear 2 and engaging with gear 3 of the time-correcting gear train of the timepiece 200 at the second position.

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's mainspring will not be wound and the calendar will not be quickly adjusted, but the time can be adjusted.

When the winding stem 10 is returned from the second position to the first position, or from the first position to the zero position, the operation described above is reversed.

The above is the normal operation of the timepiece 200 and winding stem interlocking mechanism 100 of this embodiment. Below, we will explain the operation of the winding stem interlocking mechanism 100 when the tooth tip of the clutch wheel 18 abuts against the tooth tip of the setting wheel 50 in the range from the 0th position to the 1st 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 abuts against the tooth tip of the gear 3 in the range from the 1st position to the 2nd position of the winding stem 10.

First, in the range from the 0th position to the 1st position of the winding stem 10, the clutch wheel 18 displaces 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 up against each other.

In this case, if the clutch wheel 18 or the setting wheel 50 rotates, causing the tooth tips to shift position 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 meshed.

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

Furthermore, in a winding stem interlocking mechanism to which the present invention does not apply, the clutch wheel 18 and the setting wheel 50 are not meshed, so 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 tips of the teeth of the clutch wheel 18 and the setting wheel 50 butt strongly together, the crown cannot be rotated smoothly.

In contrast, in the winding stem interlocking mechanism 100 of this embodiment, when the clutch wheel 18 displaces inward along the axial direction of the winding stem 10 in the range from the zero-stage position to the first-stage position, and the tip of the clutch wheel 18 abuts against the tip of the tooth of the setting wheel 50, the clutch wheel 18 does not displace to its original first-stage position (see Figure 2), but the elastic piece 35 elastically deforms and bends, allowing the yoke 30 to rotate to its original first-stage position.

This allows the setting lever 20 to be displaced to its original first position, allowing the winding stem 10 to be pulled to the first position. As a result, the engagement pin 22 of the setting lever 20 engages with the second recess 81b of the backing member 80, and the user's fingers pulling the winding stem 10 feel the same sense of moderation that is obtained when pulling it to the first position, allowing the user to recognize that it has been pulled to the first position.

When the user rotates the crown to quickly adjust the calendar while the winding stem 10 is pulled to the first position, the clutch wheel 18 rotates along with the winding stem 10, thereby releasing the abutment between the tip of the clutch wheel 18 and the tip of the setting wheel 50. Because an elastic force generated by the flexing of the elastic piece 35 of the yoke 30 acts on the clutch wheel 18, when the abutment with the tip of the setting wheel 50 is released, the clutch wheel 18 displaces toward the setting wheel 50, and the clutch wheel 18 advances to its original first position and engages with the setting wheel 50.

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 gear 2, allowing for rapid adjustment of the calendar.

In addition, 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 contact 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, which weakens the contact between the tip of the tooth of the clutch wheel 18 and the tip of the tooth of the setting wheel 50, allowing the crown to rotate smoothly.

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 move inward together along the axial direction of the winding stem 10, but depending on the relative phase relationship between the teeth of the setting wheel 50 and the teeth of gear 3, the tips of the teeth of the setting wheel 50 and the tips of the teeth of gear 3 (tooth tips) may butt up against each other.

In this case, if the setting wheel 50 or gear 3 rotates, causing the tooth tips to shift position and eliminating the collision, the setting wheel 50 and gear 3 will mesh normally. However, if the setting wheel 50 and gear 3 remain in collision and neither rotates at all, the setting wheel 50 and gear 3 will not mesh, and the distance between the setting wheel 50 and gear 3 will be longer than the relative positional relationship between them when they are meshed.

In a winding stem interlocking mechanism to which the present invention does not apply, the clutch wheel 18 and the set wheel 50 stop short of the two-stage position they should normally reach, resulting in the winding stem 10 not being able to be pulled to the two-stage position. If the winding stem 10 cannot be pulled to the two-stage position, the engagement pin 22 of the setting rod 20 does not engage with the third recess 81c of the backing 80, and the user's fingers pulling the winding stem 10 do not feel the sense of detent that should be felt when pulling it to the two-stage position. Therefore, the user feels uncomfortable because they do not feel the detent.

Furthermore, in winding stem interlocking mechanisms to which the present invention does not apply, the setting wheel 50 and 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 tips of the teeth of the setting wheel 50 and the tips of the teeth of gear 3 butt together too hard, the crown cannot be rotated smoothly.

In this embodiment, the winding stem interlocking mechanism 100 displaces the clutch wheel 18 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. The clutch wheel 18 and the setting wheel 50 mesh together and displace inward along the axial direction of the winding stem 10. When 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).

However, even if the clutch wheel 18 does not move to its original second-stage position, the winding stem interlocking mechanism 100 allows the elastic piece 35 of the yoke 30 to elastically deform and bend, allowing the yoke 30 to rotate to its original second-stage position, thereby making it possible to rotate the setting lever 20 to its original second-stage position.

Here, in order to rotate the lovebirds 20 to their original two-stage position, the switching link 40 must be rotated to the two-stage position so that the groove 41 in the switching link 40 follows the trajectory of the track pin 23 to the two-stage position. However, the switching link 40 cannot rotate to the two-stage position because the pinion 50 is butting up against the gear 3.

However, in the winding stem interlocking mechanism 100, the pull-side portion 42a of the switching link 40 elastically deforms and bends, widening the groove 41 of the switching link 40 to match the displacement of the track pin 23. This makes it possible to rotate the setting lever 20 to its original two-stage position.

In this way, the winding stem interlocking mechanism 100 allows the setting lever 20 to be displaced to its original second-stage position, and the winding stem 10 to be pulled to the second-stage position, thanks to the elastic piece 35 of the yoke 30 and the elastically deformable pull-side portion 42a of the switching link 40.

As a result, the engagement pin 22 of the setting lever 20 engages with the third recess 81c of the backing 80, and the user's fingers pulling the winding stem 10 feel the same sense of control as when pulled to the second position, allowing the user to recognize that they have pulled to the second position.

When the user rotates the crown to adjust the time with the winding stem 10 pulled to the second position, the clutch wheel 18 and setting wheel 50 rotate along with the winding stem 10, thereby releasing the abutment between the tips of the teeth of the setting wheel 50 and the tips of the teeth of the gear 3.

An elastic force generated by the deflection of the elastic piece 35 of the yoke 30 acts on the clutch wheel 18, and an elastic force generated by the deflection of the pull-side portion 42a of the switching link 40 acts on the setting wheel 50. Therefore, when the abutment between the tip of the setting wheel 50 and the tip of the gear 3 is released, the setting wheel 50 displaces toward 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.

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.

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. Therefore, the clutch wheel 18 can be displaced axially within the range in which the elastic piece 35 can be elastically deformed, and the setting wheel 50 can be displaced axially within the range in which the pull-side portion 42a can be elastically deformed.

Therefore, even if the contact between the tips of the teeth of the setting wheel 50 and the teeth 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. This weakens the contact between the tips of the teeth of the setting wheel 50 and the teeth of the gear 3, allowing the crown to be rotated.

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 0th position to the 1st position even if the clutch wheel 15 and the setting wheel 50 butt against each other, and can pull out the winding stem 10 from the 1st position to the 2nd position even if the setting wheel 50 and the gear 3 in the time-setting wheel train butt against each other.

The winding stem interlocking mechanism 100 and timepiece 200 of this embodiment solve the problems of the winding stem 10 hitting the first stage and the second stage by using two characteristic components: the elastic piece 35 of the yoke 30 and the elastically deformable pull-side portion 42a of the switching link 40. If either component is missing, it will be impossible to eliminate the problems of hitting the first stage and the second stage.

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 winding 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, which is engaged with gear 2, and rotating the winding stem 10, 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, which is engaged with gear 3, and rotating the winding stem 10, thereby performing the function of correcting the time of the timepiece 200.

However, with the stem interlocking mechanism of the present invention, the function achieved by rotating the stem in the zero-stage position of the stem is not limited to the function of winding the mainspring, the function achieved by rotating the stem in the first-stage position of the stem is not limited to the function of rapid calendar adjustment, and the function achieved by rotating the stem in the second-stage position of the stem is not limited to the function of time adjustment.

In the winding stem interlocking mechanism 100 and timepiece 200 of the above-described embodiment, even if the clutch wheel 18 and the setting wheel 50 do not reach their original second-stage position due to the teeth butting against each other when the winding stem 10 is pulled axially to the second-stage position, 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 absorbs the shortfall, allowing the winding stem 10 to be pulled to its original second-stage position.

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

The settling wheel 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 setting rod 20, the switching link 40 will not rotate unless the winding stem 10 is displaced from the second position to the first position.

However, the portion where the switching link 40 and the setting rod 20 engage is elastically combined by the elastic deformation of the pull-side portion 42a of the switching link 40. Therefore, even if the winding stem 10 is not displaced from the second stage to the first stage, the elastic deformation of the pull-side portion 42a of the switching link 40 can cause the setting wheel 50 to move in a direction away from the gear 3. Furthermore, 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 due to the elastic deformation of the elastic piece 35 of the yoke 30.

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

In addition, if the amount of 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 could result in the problem of being unable to transmit rotation.

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

(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 disposed 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 disposed in its original 2-stage position.

As shown in Figure 7, the winding stem interlocking mechanism 100 of variant 1 has two abutment portions 37, 39 formed on a portion of the elastic piece 35 of the yoke 50. Here, the abutment portion 37 does not come into contact with the immovable fixed portion 91 formed on the main plate or gear train bridge when the yoke 30 is in its original 0-stage and 1-stage positions, but is formed so that it abuts against the fixed portion 91 just before the original 2-stage position of the yoke 30 (towards the 1-stage position).

Furthermore, the abutment portion 39 is configured 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 elastic piece 35 elastically deforms, as shown in Figure 8, and the abutment portion 39 abuts against the rigid fixed portion 38 of the yoke 30, which is not the elastic piece 35.

With the winding stem interlocking mechanism 100 and timepiece 200 of variant 1, which includes the yoke 30 configured in this way, as shown in Figure 8, when the clutch wheel 18 is displaced to its original two-stage position, 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.

As a result of 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, pushing it from its original two-stage position toward the inside of the winding stem 10. Then, with the elastic piece 35 in its elastically deformed state, the other abutment portion 39 abuts against the fixed portion 38, which is the immovable rigid portion of the yoke 30 that has rotated around C2 (the portion that does not elastically deform, excluding the elastic piece 35).

Here, the fixed portion 38 of the yoke 30 is formed further outward in the axial direction of the winding stem 10 than the abutment portion 39, and the fixed portion 38 contacts the abutment portion 39 from the outside in the axial direction of the winding stem 10. As a result, when the yoke 30 is in its 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 when the abutment portion 39 abuts against the fixed portion 38.

As a result, even when the clutch wheel 18 receives a reaction torque from the set wheel 50 with which it is meshed, it does not displace in a direction away from the set wheel 50, preventing a decrease in the transmission efficiency of the torque transmitted between the clutch wheel 18 and set wheel 50.

However, depending on the dimensional tolerance between the abutment portion 39 and the fixed portion 38, there is a possibility that the abutment portion 39 and the fixed portion 38 may abut against each other before the yoke 30 reaches its intended two-stage position. In this case, the yoke 30 may not be able to reach its intended two-stage position, or the yoke 30 may be plastically deformed.

To avoid this situation, it is preferable to incline the surfaces of the abutting portion 39 and the fixing portion 38 so that the contact points slide and shift between each other, allowing the latch 30 to be displaced to its original two-stage position.

(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 disposed 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 disposed in its original 2-stage position.

As shown in Figure 10, the winding stem interlocking mechanism 100 of variant 2 has an abutment portion 42c formed on part of the pull-side portion 42a of the switching link 40. Here, the abutment portion 42c does not come into contact with the immovable fixed portion 93 formed on the main plate, gear train bridge, etc. when the switching link 40 is in its original stage 0 or stage 1 position, but is formed so that it abuts against the fixed portion 93 when the switching link 40 is in its original stage 2 position.

In the winding stem interlocking mechanism 100 and timepiece 200 of variant 2, which includes the switching link 40 configured in this way, as shown in Figure 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 such as the main plate or gear train bridge, preventing further elastic deformation of the pull-side portion 42a and preventing the switching link 40 from moving beyond its original two-stage position.

Therefore, even if the setting wheel 50 is subjected to a force that pulls it toward the gear 3 it is meshing with, for example, by rotating clockwise, the setting wheel 50 will not be displaced in a direction toward the gear 3, preventing a decrease in the transmission efficiency of torque transmitted between the setting wheel 50 and gear 3 or increased friction between the tooth tip and tooth base surfaces of the setting wheel 50 and gear 3, which could result in an abnormal operating feel (such as increased operating force or an unsmooth, rough, or rough operating feel).

(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 disposed 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 disposed in its original 2-stage position.

As shown in Figure 11, the winding stem interlocking mechanism 100 of variant 3 has an elastically deformable abutment portion 44 formed near the portion of the switching link 40 where the fine iron 50 is supported, which is the portion of the switching link 40 opposite the portion where the groove 41 is formed across fulcrum C3. Here, the abutment portion 44 does not abut against the immovable fixed portion 92 formed on the main plate or gear train holder, etc., when the switching link 40 is in its original 0th and 1st stage positions, but is formed so that it abuts against the fixed portion 92 at a position before the original 2nd stage position of the switching link 40.

In this way, with the winding stem interlocking mechanism 100 and timepiece 200 of variant 3, which includes the switching link 40 formed as above, as shown in Figure 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.

Therefore, even if the setting wheel 50 is subjected to a force that pulls it toward the gear 3 it is meshing with, for example, by rotating clockwise, the setting wheel 50 will not be displaced in a direction toward the gear 3, preventing a decrease in the transmission efficiency of torque transmitted between the setting wheel 50 and gear 3 or increased friction between the tooth tip and tooth base surfaces of the setting wheel 50 and gear 3, which could result in an abnormal operating feel (such as increased operating force or an unsmooth, rough, or rough operating feel).

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 may become unstable and wobble at the two-stage position.

In this case, by forming the abutment portion 44 of variant 3 to abut against the fixed portion 92 just before the switching link 40's original two-stage position, when the switching link 40 is in its 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 its two-stage position, the position of the iron wheel 50 will not become unstable, and wobbling of the iron wheel 50 can be prevented.

The winding stem interlocking mechanism 100 of the above-described variant 1 is an example that solves the problems that can arise when the yoke 30 has the elastic piece 35, 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.

Furthermore, the winding stem interlocking mechanism 100 of the above-mentioned variants 2 and 3 is an example that solves the problem that can arise when the switching link 40 has a pull-side portion 42a that can elastically deform. Therefore, it 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.

10 winding stem 18 clutch wheel 20 setting lever 30 yoke 35 elastic piece (first elastic portion)
36 Engagement portion 40 Switching link (switching member)
41 Groove 42a Pull side portion (second elastic portion)
50 Small iron car 100 Winding stem interlocking mechanism 200 Clock C1, C2, C3 Fulcrum

Claims (9)

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. 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. 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. 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. The switching member has a third abutment portion formed thereon that is elastically deformable near where the setting 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. 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. 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. the winding stem interlocking mechanism according to claim 4;
a timepiece comprising 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. the winding stem interlocking mechanism according to claim 5;
a timepiece comprising 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.