JP7299115B2 - Gear train setting, watch movement and timepiece - Google Patents

Description

TECHNICAL FIELD The present invention relates to a train wheel setting mechanism, a timepiece movement, and a timepiece.

A conventional mechanical timepiece is provided with a gear train adjustment mechanism that stops the second hand when setting the time (see, for example, Patent Document 1). Patent Document 1 discloses a configuration in which a balance adjustment lever for adjusting the rotation of the balance is provided so as to rotate based on the rotation of the setting lever in a state in which the hands can be adjusted with the winding stem on the second stage. is disclosed.

JP 2006-234677 A

By the way, when the correcting lever is arranged on the main plate by being supported by a pin fixed to the main plate, part of the space on the main plate is occupied by the correcting lever. Therefore, in order to avoid interference between the parts, it is necessary to devise the shapes of parts other than the regular lever, which reduces the design margin. This is more pronounced the smaller the watch movement. Therefore, the conventional gear train setting mechanism has room for improvement in terms of suppressing a decrease in the design margin of the timepiece movement.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a train wheel setting mechanism capable of suppressing a decrease in the design tolerance of a timepiece movement, and a timepiece movement and a timepiece provided with the train wheel setting mechanism.

A gear train setting mechanism of the present invention includes a first rotating body and a second rotating body supported by a main plate, and a setting mechanism provided so as to be able to come into contact with and separate from the first rotating body, and operate in conjunction with a winding stem. It is characterized by comprising a lever, and a receiving member that supports the second rotating body together with the base plate and supports the correcting lever.

According to the present invention, the setting lever can be incorporated into the timepiece movement without providing a pin or the like for supporting the setting lever on the main plate. This improves the degree of freedom in the shape of parts other than the regulation lever. Therefore, it is possible to provide a gear train regulation mechanism that can suppress a decrease in the design tolerance of a timepiece movement.

In the above gear train setting mechanism, the second rotating body may be a center wheel and pinion to which a cannon pinion to which a minute hand is attached is assembled .

According to the present invention, the receiving member is arranged closer to the main plate than other receiving members that support the rotating body to which the second hand is attached together with the main plate. Therefore, the support member is arranged at a position closer to the winding stem than the other support members in the thickness direction of the main plate. Therefore, it is possible to easily design a configuration for operating the setting lever in conjunction with the winding stem.

The train wheel setting mechanism may include a biasing member that biases the setting lever against the receiving member.

According to the present invention, since the setting lever is pressed in one direction by the urging member, it is possible to suppress rattling of the setting lever and stabilize the operation of the setting lever.

In the train wheel setting mechanism described above, the receiving member may be formed with a recess for accommodating the setting lever and the biasing member.

According to the present invention, it is possible to reduce the volume of the space occupied by the adjusting lever and the biasing member around the recess compared to a configuration in which the receiving member does not have the recess. As a result, it is possible to further improve the degree of freedom in the shape of parts other than the correcting lever and the biasing member.

In the train wheel setting mechanism described above, the biasing member may be provided integrally with the setting lever.

According to the present invention, the number of parts can be reduced compared to a configuration in which the biasing member is provided as a separate member from the correcting lever. As a result, the manufacturing cost can be reduced.

In the gear train setting mechanism, the setting lever includes a lever main body supported by the receiving member; A contact portion supported by the lever body and capable of coming into contact with the first rotating body may be provided.

According to the present invention, by displacing the winding stem in the axial direction, the contact portion can be displaced together with the lever body in accordance with the shape of the winding stem. Thereby, the contact part supported by the lever main body can be brought into contact with and separated from the first rotating body. Therefore, the setting lever can be operated in conjunction with the winding stem.

The gear train setting mechanism described above includes an interlocking portion that is displaced in conjunction with displacement of the winding stem in the axial direction, and the setting lever is supported by a lever body supported by the receiving member, and by the lever body, An engaging portion formed to be engageable with the interlocking portion, and a contact portion supported by the lever body and capable of coming into contact with the first rotating body may be provided.

According to the present invention, by displacing the winding stem in the axial direction, the engaging portion can be displaced together with the lever main body as the interlocking portion is displaced. Thereby, the contact part supported by the lever main body can be brought into contact with and separated from the first rotating body. Therefore, the setting lever can be operated in conjunction with the winding stem.

In the train wheel setting mechanism described above, the setting lever may include an elastically deformable portion that is capable of bending deformation.

According to the present invention, the contact pressure between the setting lever and the first rotor can be reduced by flexurally deforming the elastically deformable portion. Therefore, it is possible to suppress damage to the first rotating body due to contact with the correcting lever.
Further, when the correcting lever is separated from the first rotating body, the restoring of the elastically deforming portion causes the correcting lever to repel the first rotating body, thereby applying a rotational force to the first rotating body. As a result, the operation of the first rotating body can be restarted quickly.

In the above gear train setting mechanism, the setting lever includes an elastically deformable portion, and the abutment portion is configured to move the winding stem while the contact portion is in contact with the first rotating body. may abut.

According to the present invention, since the rotation of the lever body by the biasing member is restricted by bringing the contact portion into contact with the winding stem, only the restoring force associated with the flexural deformation of the elastic deformation portion is transferred from the contact portion to the first rotation. can act on the body. Thereby, the contact pressure between the setting lever and the first rotor can be reduced. Therefore, it is possible to suppress damage to the first rotating body due to contact with the correcting lever.
Further, when the correcting lever is separated from the first rotating body, the restoring of the elastically deforming portion causes the correcting lever to repel the first rotating body, thereby applying a rotational force to the first rotating body. As a result, the operation of the first rotating body can be restarted quickly.

In the above gear train setting mechanism, the setting lever may be arranged on the side opposite to the main plate with the receiving member interposed therebetween.

According to the present invention, it is possible to prevent the space between the base plate and the receiving member from being occupied by the setting lever. Therefore, it is possible to improve the degree of freedom in the shape of parts other than the regulation lever arranged between the main plate and the receiving member.

In the above gear train setting mechanism, the setting lever may be arranged between the receiving member and the main plate.

According to the present invention, it is possible to prevent the setting lever from occupying the space on the opposite side of the base plate across the receiving member. Therefore, it is possible to improve the degree of freedom in the shape of parts other than the setting lever, which are arranged on the side opposite to the main plate with the receiving member interposed therebetween.

A timepiece movement of the present invention is characterized by comprising the train wheel setting mechanism described above.
A timepiece of the present invention is characterized by comprising the timepiece movement described above.

According to the present invention, a decrease in design margin is suppressed. Therefore, it is possible to provide a timepiece movement and a timepiece which are easy to assemble and whose manufacturing costs are reduced. In addition, a large number of parts can be arranged around the adjustment lever, and a multifunctional watch movement and timepiece having a large number of parts can be provided.

According to the present invention, it is possible to provide a train wheel setting mechanism capable of suppressing a decrease in the design tolerance of a timepiece movement, and a timepiece movement and a timepiece provided with the train wheel setting mechanism.

1 is a plan view of the timepiece of the first embodiment; FIG. It is the top view which looked at the movement concerning 1st Embodiment from the front side. FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2; It is the top view which looked at a part of movement which concerns on 1st Embodiment from front side. It is a perspective view which shows the second stop, a setting lever, and an urging member which concern on 1st Embodiment. It is the top view which looked at a part of movement which concerns on 1st Embodiment from front side. It is the top view which looked at a part of movement which concerns on 2nd Embodiment from front side. It is the top view which looked at a part of movement which concerns on 2nd Embodiment from front side. It is the top view which looked at a part of movement which concerns on 3rd Embodiment from front side. FIG. 11 is a cross-sectional view showing a movement according to a third embodiment; FIG. 11 is a perspective view showing a second stop, a setting lever and a biasing member according to a third embodiment; It is the top view which looked at a part of movement which concerns on 4th Embodiment from front side. It is a cross-sectional view showing a movement according to a fourth embodiment. It is the top view which looked at a part of movement which concerns on 5th Embodiment from front side. It is a sectional view showing a movement concerning a 5th embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals are given to components having the same or similar functions. Duplicate descriptions of these configurations may be omitted.

[First embodiment]
A first embodiment will be described with reference to FIGS. 1 to 6. FIG.
FIG. 1 is a plan view of the timepiece of the first embodiment.
As shown in FIG. 1, a watch 1 of this embodiment includes a watch case 3 having a case back and a glass 2 (not shown), a movement 4 (watch movement), a dial 5 having scales and the like, and a central axis. It has an hour hand 6, a minute hand 7 and a second hand 8 that rotate around O to indicate the scale of the dial plate 5. - 特許庁

The movement 4 is arranged within the watch case 3 between the dial 5 and the case back cover. Hereinafter, the side of the watch case 3 on which the glass 2 of the watch case 3 is located (the side on which the dial 5 is located) with respect to the movement 4 in the direction along the central axis O will be referred to as the "back side" of the movement 4 . In addition, in the direction along the central axis O, the side of the movement 4 on which the case back cover of the watch case 3 is located (the side opposite to the dial 5) is referred to as the "front side" of the movement 4. As shown in FIG. Also, the direction along the central axis O is referred to as the front-back direction.

FIG. 2 is a plan view of the movement according to the first embodiment, viewed from the front side. FIG. 3 is a cross-sectional view taken along line III-III of FIG.
As shown in FIGS. 2 and 3, the movement 4 includes a main plate 10, a front train wheel 30 arranged on the front side of the main plate 10, a back train wheel 40 arranged on the back side of the main plate 10, and the main plate 10 together with the front train wheel 30. A first bridge 11 and a second bridge 12 that support the train wheel 30, an escapement speed governing mechanism 50 that controls the rotation of the front train wheel 30, and a train wheel that regulates a balance 51 described later of the escapement speed governing mechanism 50. A regulation mechanism 70 is mainly provided.

As shown in FIG. 3 , the main plate 10 constitutes the substrate of the movement 4 . The base plate 10 is formed in a plate shape having a thickness in the front and back directions. The main plate 10 is arranged on the front side of the dial 5 (see FIG. 1). A first bridge 11 and a second bridge 12 are arranged on the front side of the main plate 10 . The first bridge 11 and the second bridge 12 are fixed to the main plate 10 respectively. The second bridge 12 is arranged closer to the main plate 10 than the first bridge 11. - 特許庁The second bridge 12 is formed so as to overlap the main plate 10 as a whole when viewed from the front side. The second bridge 12 is formed so that at least a part thereof overlaps the first bridge 11 when viewed from the front side. A detailed configuration of the second bridge 12 will be described later.

FIG. 4 is a plan view of part of the movement according to the first embodiment, viewed from the front side.
As shown in FIG. 4, the main plate 10 is formed with a winding stem guide hole 10a. A winding stem 13 is incorporated in the winding stem guide hole 10a. The winding stem 13 is supported by the main plate 10 so as to be rotatable and movable in the axial direction of the winding stem 13 . The winding stem 13 extends around an axis perpendicular to the central axis O. As shown in FIG. The winding stem 13 includes a cylindrical portion 13a extending in the axial direction of the winding stem 13 with a constant outer diameter and an end portion on the center side of the movement 4. The diameter of the winding stem 13 gradually decreases toward the center side of the movement 4 from the cylindrical portion 13a. and a conical portion 13b. The cross-sectional shape of the cylindrical portion 13a and the conical portion 13b is circular with the central axis of the winding stem 13 as the center. A crown 9 is connected to the winding stem 13 on the outside of the watch case 3 shown in FIG. The winding stem 13 is axially displaceable as the crown 9 is pulled out. The winding stem 13 is held at a predetermined position by a switching device, which will be described later. In this embodiment, the winding stem 13 is held in at least two positions: the 0th stage position where it is most inserted into the inside of the movement 4, and the 1st stage position where the crown 9 is pulled out by one stage from the 0th stage position. In FIG. 4, the winding stem 13 is positioned at the 0th stage.

The switching device includes a mandrel and a bar (not shown). The mandrel and the bar are provided rotatably with respect to the main plate 10, respectively. The mandrel engages the winding stem 13 and rotates in conjunction with the axial displacement of the winding stem 13 . The bar engages the mandrel and rotates as the mandrel rotates. The mandrel and the bar slide against each other as the winding stem 13 is displaced in the axial direction. In the sliding portion of the mandrel and the bar, one of the mandrel and the bar is provided with an engaging portion for detachably engaging the other. The engaging portion engages the setting lever and the bar with the winding stem 13 positioned at the 0th stage position and the 1st stage position, respectively. As a result, the winding stem 13 is held at the 0th stage position and the 1st stage position.

A handwheel 21 and a handwheel 22 are assembled to the winding stem 13 . The wheel wheel 21 and the wheel wheel 22 are arranged at a position closer to the outer side of the movement 4 than the cylindrical portion 13a. The pinion wheel 21 is provided so as to be axially displaceable with respect to the winding stem 13 . The pinion wheel 21 is provided so as not to be displaceable in the axial direction of the winding stem 13 with respect to the main plate 10 . The pinion wheel 21 is provided so as to be non-rotatable with respect to the winding stem 13 at the 0th stage position and rotatable with respect to the winding stem 13 at the 1st stage position. A ratchet wheel 23 is engaged with the ratchet wheel 21 (see FIG. 2). The handwheel 22 is arranged on the center side of the movement 4 with respect to the handwheel 21 . The clutch wheel 22 has teeth projecting toward the center of the movement 4 . The handwheel 22 is axially displaceable with respect to the winding stem 13 and non-rotatable with respect to the winding stem 13 . The handwheel 22 engages with the bar and is displaced in the axial direction of the winding stem 13 as the bar rotates. Specifically, the handwheel 22 is displaced in a direction opposite to the displacement direction of the winding stem 13 with respect to the main plate 10 in conjunction with the displacement of the winding stem 13 in the axial direction. The handwheel 22 is positioned at a predetermined position in the axial direction with the winding stem 13 at the zero stage position. The handwheel 22 is positioned at a meshing position closer to the center of the movement 4 than the predetermined position in the axial direction when the winding stem 13 is at the first step. The handwheel 22 meshes with the minute wheel 43 (see FIG. 2) at the meshing position.

As shown in FIG. 2 , the front train wheel 30 includes a barrel wheel 31 , a center wheel & pinion 32 , a third wheel & pinion 33 , a fourth wheel & pinion 34 , and a second pinion stem 35 . The barrel wheel 31 is arranged on one side of the central axis of the winding stem 13 when viewed from the front side. The center wheel & pinion 32 and the second pinion pinion 35 are arranged coaxially with the central axis O. Most of the third wheel & pinion 33 is arranged on the opposite side of the barrel wheel 31 with respect to the central axis of the winding stem 13 when viewed from the front side. The entire fourth wheel & pinion 34 is arranged on the same side as most of the third wheel & pinion 33 with respect to the center axis of the winding stem 13 when viewed from the front side.

As shown in FIG. 3, barrel wheel 31 is rotatably supported by main plate 10 and first bridge 11 . At least part of the barrel wheel 31 is arranged at the same position as the second bridge 12 in the front-back direction. The barrel wheel 31 includes a barrel stem 31a, a barrel 31b rotatably supported relative to the barrel stem 31a, and barrel teeth 31c projecting from the outer peripheral surface of the barrel 31b. The front end of the barrel stem 31a is supported by the first bridge 11 via a bearing held by the first bridge 11 . The rear end of the barrel stem 31a is pivotally supported by the main plate 10 via a bearing held by the main plate 10. As shown in FIG. The barrel 31 b is arranged between the main plate 10 and the first bridge 11 . The barrel 31b accommodates a mainspring (not shown). The end of the mainspring on the inner peripheral side is engaged with the barrel stem 31a. The end of the mainspring on the outer peripheral side is engaged with the inner surface of the barrel 31b. The barrel tooth portion 31c is provided closer to the main plate 10 than the second bridge 12 in the front-back direction.

A ratchet wheel 36 is assembled to the barrel stem 31a. The ratchet wheel 36 is arranged on the front side of the barrel 31b. The ratchet wheel 36 is provided so as not to rotate relative to the barrel stem 31a. The ratchet wheel 36 rotates via transmission gears (partially not shown) such as the ratchet wheel 23 as the ratchet wheel 21 described above rotates (see FIG. 2). As the ratchet wheel 36 rotates, the barrel stem 31a rotates with respect to the barrel 31b, and the mainspring is wound. The barrel 31b rotates using the force generated when the mainspring unwinds as a power source.

The center wheel & pinion 32 is rotatably supported by the main plate 10 and the center bridge 12 . The center wheel & pinion 32 includes a center center 32a and a center gear 32b attached to the center center 32a. The center stem 32a is formed in a cylindrical shape and extends in the front and back directions with the center axis O as the center. A front end portion of the center stem 32 a is supported by the center bridge 12 via a bearing 26 held by the center bridge 12 . An intermediate portion of the center stem 32 a in the front-rear direction is supported by the center bridge 12 via a bearing held by the main plate 10 . The center stem 32a protrudes to the rear side of the main plate 10.例文帳に追加A center pinion 32c is formed at a portion of the center stem 32a positioned between the main plate 10 and the center bridge 12. As shown in FIG. The second pinion 32c meshes with the barrel teeth 31c of the barrel wheel 31. As shown in FIG. As a result, the center wheel & pinion 32 is rotated by the power of the barrel wheel 31 . The center gear 32 b is arranged between the main plate 10 and the center bridge 12 . The center gear 32b is adjacent to the back side of the center pinion 32c. A portion of the second gear 32b overlaps the barrel wheel 31 when viewed from the front side.

The third wheel & pinion 33 is rotatably supported by the main plate 10 and the first bridge 11 . The third wheel & pinion 33 includes a third stem 33a and a third gear 33b attached to the third stem 33a. The third stem 33a extends in the front-back direction. The front side end of the third stem 33 a is pivotally supported by the first ring 11 . A rear end portion of the third stem 33 a is pivotally supported by the main plate 10 . The third pinion 33a has a third pinion (not shown) that meshes with the center gear 32b. As a result, the third wheel & pinion 33 is rotated by the power of the barrel wheel 31 . The third gear 33 b is arranged between the first bridge 11 and the second bridge 12 . The third gear 33b overlaps the center bridge 12 when viewed from the front side.

The fourth wheel & pinion 34 is rotatably supported by the main plate 10 and the first bridge 11 . The fourth wheel & pinion 34 includes a fourth stem 34a and a fourth gear 34b assembled to the fourth stem 34a. The fourth stem 34a extends in the front-back direction. A front side end portion of the fourth stem 34 a is pivotally supported by the first ring 11 . The back side end of the fourth stem 34a is pivotally supported by the main plate 10. As shown in FIG. The fourth stem 34a has a fourth pinion 34c that meshes with the third gear 33b. As a result, the fourth wheel & pinion 34 is rotated by the power of the barrel wheel 31 . The fourth gear 34b is arranged closer to the main plate 10 than the third gear 33b. At least part of the fourth gear 34b is arranged at the same position as the center bridge 12 in the front-back direction.

The second pinion 35 extends in the front and back direction with the center axis O as the center. The second pinion stem 35 is inserted inside the second stem 32a. The front-side end of the second pinion pin 35 is supported by the first stop 11 via a bearing held by the first stop 11 . An intermediate portion of the second pinion stem 35 in the front-rear direction is supported by the inner peripheral surface of the center stem 32a so as to be relatively rotatable. A second hand 8 is attached to the rear end of the second hand pin 35 . Second kana true 35 has second kana 35a. The second pinion 35a is arranged between the first bridge 11 and the second bridge 12. - 特許庁The second pinion 35a meshes with the third gear 33b. As a result, the second pinion 35 is rotated by the power of the barrel wheel 31 .

The reverse train wheel 40 includes a cannon pinion 41, a chute wheel 42, and a minute wheel 43. - 特許庁
The cannon pinion 41 is formed in a cylindrical shape as a whole and arranged coaxially with the central axis O. As shown in FIG. The cannon pinion 41 is arranged on the back side of the main plate 10 and is attached to the outside of the center stem 32a in a slidable state. The cannon pinion 41 is rotated by the power of the barrel wheel 31 . The pinion 41 has a front end portion provided with teeth that mesh with the minute wheel 43 . The cannon pinion 41 rotates while slipping with respect to the center wheel & pinion 32 as the winding stem 13 at the first step rotates. A minute hand 7 is attached to the end of the back side of the cannon pinion 41 .

The hour wheel 42 is formed in a tubular shape as a whole and arranged coaxially with the central axis O. As shown in FIG. The hour wheel 42 is assembled to the outside of the cannon pinion 41 so as to be relatively rotatable. Teeth are provided on the end portion on the front side of the hour wheel 42 . The hour hand 6 is attached to the rear end of the hour wheel 42 .

A minute wheel 43 is rotatably supported on the main plate 10 . The minute wheel 43 meshes with the teeth of the cannon pinion 41 and the tooth of the hour wheel 42, and transmits the rotation of the cannon pinion 41 to the hour wheel 42 at reduced speed. As a result, the hour wheel 42 is rotated by the power of the barrel wheel 31 .

The escapement speed governing mechanism 50 includes an escape wheel and an anchor (both not shown) and a balance 51 . The escape wheel is meshed with the fourth gear 34b and rotated by the power transmitted from the barrel wheel 31 . The anchor causes the escape wheel to escape and rotate regularly. The balance 51 rotates back and forth at a constant cycle to rock the pallet fork. The escapement speed control mechanism 50 controls the rotation of the front train wheel 30 by regular vibration of the balance 51 .

The balance 51 is arranged on the side opposite to the winding stem 13 across the central axis O when viewed from the front side. The balance wheel 51 is arranged at a position not overlapping the barrel wheel 31, the third wheel & pinion 33 and the fourth wheel & pinion 34 when viewed from the front side. The balance 51 includes a balance 52 , a balance wheel 53 , and a balance spring 54 . The balance spring 51 utilizes the power of the balance spring 54 to reciprocate around the center axis of the balance 52 at a constant vibration cycle. The stem 52 is a rod-shaped member extending in the front-back direction. The balance 52 is supported by the main plate 10 and a balance bearing (not shown). The balance stem 52 is press-fitted into a fitting hole of the balance wheel 53 and fixed to the balance wheel 53 . The balance wheel 53 includes an annular rim portion 53a that surrounds the stem 52 from the outside in the radial direction, and an arm portion 53b that connects the rim portion 53a and the stem 52 in the radial direction. The rim portion 53 a is arranged coaxially with the stem 52 . The outer peripheral surface of the rim portion 53a has a constant outer diameter. The hairspring 54 is spirally formed within a plane perpendicular to the central axis of the mainspring 52 . The inner end of the hairspring 54 is fixed to the mainspring 52 . The outer end of the balance spring 54 is fixedly arranged with respect to the main plate 10 .

The gear train setting mechanism 70 sets the balance 51 by using the axial position switching operation of the winding stem 13 . The gear train setting mechanism 70 includes the balance wheel 51, the center wheel & pinion 32 and the center bridge 12 described above, a setting lever 71 which is provided so as to be able to come into contact with and separate from the balance wheel 51, and which operates in conjunction with the winding stem 13, and an urging member 90 that urges the setting lever 71 against the second bridge 12 .

FIG. 5 is a perspective view showing a second stop, a setting lever and an urging member according to the first embodiment.
As shown in FIGS. 4 and 5, the second bridge 12 is formed in a plate shape having a thickness in the front-back direction. The front and back surfaces of the second bridge 12 each extend along a vertical plane in the front-back direction. The second support 12 includes a first fixing portion 61 and a second fixing portion 62 fixed to the main plate 10 . The first fixing portion 61 is arranged between the winding stem 13 and the fourth wheel & pinion 34 when viewed from the front side. The second fixing portion 62 is located on the first fixing portion 61 side of the central axis of the winding stem 13 when viewed from the front side, and is located on the first fixing portion 61 with the fourth wheel & pinion interposed therebetween in the circumferential direction around the central axis O. is placed on the opposite side. The center bridge 12 extends from the first fixed portion 61 to the second fixed portion 62 through the center side of the movement 4 relative to the fourth wheel & pinion 34 when viewed from the front side. A bearing holding portion 63 for holding the bearing 26 is formed between the first fixing portion 61 and the second fixing portion 62 of the second stop 12 . The bearing holding portion 63 is arranged on the central axis O. As shown in FIG. The bearing holding portion 63 is separated from the main plate 10 and the first bridge 11 in the front and back direction (see FIG. 3). A through hole for holding the bearing 26 is formed in the bearing holding portion 63 .

A concave portion 64 and a pin hole 65 (see FIG. 3) are formed in the second stop 12 . The concave portion 64 is formed on the surface of the second stop 12 and recessed on the back side. The recess 64 is formed in a portion of the second bridge 12 excluding the first fixing portion 61 , the second fixing portion 62 and the bearing holding portion 63 . The recess 64 is formed with a substantially constant depth. The bottom surface of the recess 64 is located on the back side of the balance wheel 53 of the balance 51 (see FIG. 3). The recessed portion 64 has a first opening 64 a and a second opening 64 b that open to the side surface of the second bridge 12 . The first opening 64a is formed between the first fixing portion 61 and the bearing holding portion 63, and faces the end of the winding stem 13 on the center side of the movement 4 when viewed from the front side. The second opening 64b is formed between the second fixing portion 62 and the bearing holding portion 63 and faces the balance 51 when viewed from the front side. As shown in FIG. 3 , the pin hole 65 penetrates the center bridge 12 in the front-rear direction and opens to the bottom surface of the recess 64 . The pin hole 65 is formed with a circular cross section.

As shown in FIGS. 4 and 5, a locking portion 66 to which a biasing member 90 (to be described later) is locked is arranged in the concave portion 64 of the second bridge 12 . The locking portion 66 protrudes from the bottom surface of the recess 64 to the front side. The locking portion 66 is formed in a cylindrical shape. The locking portion 66 is a pin that is a separate member from the center bridge 12 and is press-fitted into a hole formed in the center bridge 12 . The locking portion 66 is formed with a flange 66a projecting in a direction orthogonal to the front and back direction on the front side of the bottom surface of the recess 64 .

The correcting lever 71 is arranged on the side opposite to the main plate 10 with the second bridge 12 interposed therebetween. The correcting lever 71 is arranged in the concave portion 64 of the second bridge 12 . The setting lever 71 is rotatably supported by the center bridge 12 . The center of rotation of the correcting lever 71 is positioned closer to the first fixing portion 61 and the second fixing portion 62 than the center axis of the winding stem 13 when viewed from the front side. The correcting lever 71 has a first arm 72 and a second arm 73 extending from the center of rotation. The first arm 72 protrudes outside the center bridge 12 through the first opening 64 a of the recess 64 . The first arm 72 is formed to contact the winding stem 13 . The first arm 72 rotates in conjunction with the axial displacement of the winding stem 13 . The second arm 73 protrudes outside the center bridge 12 through the second opening 64 b of the recess 64 . The second arm 73 is formed so as to come into contact with the outer peripheral surface of the balance wheel 53 of the balance 51 from the upstream side in the first direction L1 around the center of rotation. The second arm 73 rotates in conjunction with the rotation of the first arm 72 . The distance from the rotation center to the contact portion between the second arm 73 and the balance 51 is longer than the distance from the rotation center to the contact portion between the first arm 72 and the winding stem 13 .

Specifically, the regulation lever 71 has the following configuration. The correcting lever 71 includes a support pin 81 held by the center bridge 12, a lever body 82 supported by the center bridge 12 via the support pin 81, an abutting portion 83 supported by the lever body 82, and a contact portion. a portion 84; The support pin 81 is formed in a cylindrical shape. The support pin 81 is press-fitted into the pin hole 65 of the second bridge 12 from the front side. The support pin 81 is formed with a flange 81a projecting in a direction orthogonal to the front and back direction on the front side of the bottom surface of the recess 64 . In this embodiment, the support pin 81 is formed in the same manner as the engaging portion 66 provided on the second bridge 12 . The support pin 81 holds the lever body 82 between the bottom surface of the recess 64 and the flange 81a.

The lever main body 82 is formed of a plate material having a thickness in the front-back direction. The lever body 82 is rotatably supported by the support pin 81 . The lever body 82 is arranged along the bottom surface of the recess 64 . The lever body 82 is formed thinner than the depth of the recess 64 . A portion of the lever body 82 that overlaps with the center bridge 12 when viewed from the front side is arranged so as not to protrude further to the front side than the surface of the center bridge 12 . The lever body 82 extends outside the second stop 12 from each of the first opening 64a and the second opening 64b of the recess 64, and forms a part of each of the first arm 72 and the second arm 73. there is

The contact portion 83 is supported by the lever body 82 at the first arm 72 . The contact portion 83 is a separate member from the lever body 82 and is attached to the lever body 82 at the tip of the first arm 72 . The contact portion 83 is formed in a columnar shape and arranged to protrude from the lever main body 82 to the rear side. The contact portion 83 faces the outer peripheral surface of the winding stem 13 from the upstream side in the first direction L1. The contact portion 83 is displaced together with the lever main body 82 in conjunction with the axial displacement of the winding stem 13 .

The contact portion 84 is supported by the lever body 82 at the second arm 73 . At least part of the contact portion 84 is arranged at the same position as the balance wheel 53 of the balance 51 in the front and back direction. The contact portion 84 is a separate member from the lever body 82 and is attached to the lever body 82 at the tip of the second arm 73 . The contact portion 84 is formed in a columnar shape and arranged so as to protrude from the lever main body 82 to the front side. The contact portion 84 faces the outer peripheral surface of the balance wheel 53 of the balance 51 from the upstream side in the first direction L1. The contact portion 84 contacts and separates from the balance wheel 53 of the balance 51 as the lever body 82 is displaced.

The biasing member 90 biases the setting lever 71 against the second bridge 12 in the first direction L1. The biasing member 90 is integrally formed of the same member as the lever body 82 of the correcting lever 71 . That is, the biasing member 90 and the lever main body 82 are made of a single plate material. The biasing member 90 is a cantilever extending from the lever body 82 . The base end of the biasing member 90 is coupled to the lever main body 82 of the second arm 73 of the correcting lever 71 outside the second stop 12 when viewed from the front side. The biasing member 90 enters the recess 64 through the first opening 64a from the joint with the lever body 82 . The biasing member 90 contacts the outer peripheral surface of the locking portion 66 within the recess 64 from the upstream side in the second direction L2 opposite to the first direction L1. The entirety of the biasing member 90 on the distal end side of the intersection with the first opening 64 a is disposed within the recess 64 .

Next, the operation of the gear train setting mechanism 70 will be described with reference to FIGS. 4 and 6. FIG.
FIG. 6 is a plan view of part of the movement according to the first embodiment as seen from the front side, showing a state in which the winding stem 13 is at the first stage position.

When the winding stem 13 is at the zero stage position, the contact portion 83 of the setting lever 71 faces the outer peripheral surface of the cylindrical portion 13a of the winding stem 13 from the upstream side in the first direction L1. At this time, the adjusting lever 71 is biased in the first direction L1 by the biasing member 90 . Therefore, the contact portion 83 is in contact with the winding stem 13 due to the biasing force of the biasing member 90 . When the contact portion 83 is in contact with the cylindrical portion 13a of the winding stem 13, the contact portion 84 of the setting lever 71 is separated from the balance wheel 53 of the balance 51 upstream in the first direction L1.

When the winding stem 13 is displaced from the 0th stage position to the 1st stage position, the conical portion 13b of the winding stem 13 is arranged downstream of the contact portion 83 in the first direction L1. Then, the lever body 82 biased in the first direction L<b>1 by the biasing member 90 rotates in the first direction L<b>1 so that the contact portion 83 approaches the central axis of the winding stem 13 . In the illustrated example, the contact portion 83 is not in contact with the winding stem 13 at the first step, but may be in contact with the conical portion 13b of the winding stem 13 at the first step. When the lever body 82 rotates in the first direction L<b>1 , the contact portion 84 approaches and comes into contact with the outer peripheral surface of the balance wheel 53 .

When the winding stem 13 is displaced from the 1st stage position to the 0th stage position, the lever main body 82 resists the urging force of the urging member 90 and separates the contact portion 83 from the center axis of the winding stem 13. It rotates in the second direction L2. When the lever body 82 rotates in the second direction L<b>2 , the contact portion 84 separates from the outer peripheral surface of the balance wheel 53 .

As a result, the train wheel setting mechanism 70 sets the balance 51 using the switching operation of the axial position of the winding stem 13 .

As described above, the train wheel setting mechanism 70 of the present embodiment supports the setting lever 71 that operates in conjunction with the winding stem 13 , supports the center wheel & pinion 32 together with the main plate 10 , and supports the setting lever 71 . A second support 12 is provided.
According to this configuration, the setting lever 71 can be incorporated into the movement 4 without providing the main plate 10 with a pin or the like for supporting the setting lever 71 . Thereby, the degree of freedom in the shape of parts other than the correcting lever 71 is improved. Therefore, it is possible to provide the gear train regulation mechanism 70 that can suppress the reduction in the design tolerance of the movement 4 .

A pinion 41 to which the minute hand 7 is attached is assembled to the center wheel & pinion 32 supported by the center bridge 12 .
According to this configuration, the second bridge 12 is arranged closer to the main plate 10 than the first bridge 11 that supports the second pinion stem 35 to which the second hand 8 is attached together with the main plate 10 . Therefore, the second bridge 12 is arranged at a position closer to the winding stem 13 than the first bridge 11 in the front-rear direction. Therefore, it is possible to easily design a configuration for operating the setting lever 71 in conjunction with the winding stem 13 .

The train wheel setting mechanism 70 also includes a biasing member 90 that biases the setting lever 71 against the second bridge 12 .
According to this configuration, the regulation lever 71 is pressed in one direction by the biasing member 90, so that the movement of the regulation lever 71 can be stabilized by suppressing rattling of the regulation lever 71. FIG.

Further, the second stop 12 is formed with a concave portion 64 for accommodating the setting lever 71 and the biasing member 90 .
According to this configuration, the volume of the space occupied by the setting lever 71 and the biasing member 90 around the recess 64 can be reduced compared to a configuration in which the second bridge is not formed with the recess. Thereby, the degree of freedom in the shape of parts other than the adjusting lever 71 and the biasing member 90 can be further improved.

Also, the biasing member 90 is provided integrally with the correction lever 71 .
According to this configuration, the number of parts can be reduced compared to a configuration in which the biasing member is provided as a separate member from the correcting lever. As a result, the manufacturing cost can be reduced.

The correcting lever 71 includes a lever body 82 supported by the second bridge 12, a contact portion 83 supported by the lever body 82 and brought into contact with the winding stem 13 by the biasing force of the biasing member 90, and the lever body 82. and a contact portion 84 that is supported by and can contact the balance 51 .
According to this configuration, by displacing the winding stem 13 in the axial direction, the contact portion 83 can be displaced together with the lever main body 82 according to the shape of the winding stem 13 . As a result, the contact portion 84 supported by the lever body 82 can be brought into contact with and separated from the balance 51 . Therefore, the setting lever 71 can be operated in conjunction with the winding stem 13 .

Further, the setting lever 71 is arranged on the side opposite to the main plate 10 with the second bridge 12 interposed therebetween.
According to this configuration, it is possible to prevent the space between the main plate 10 and the second bridge 12 from being occupied by the setting lever 71 . Therefore, it is possible to improve the degree of freedom in the shape of parts other than the setting lever 71 and the biasing member 90 which are arranged between the main plate 10 and the second bridge 12 .

Further, since the movement 4 and the timepiece 1 of the present embodiment are provided with the above-described gear train setting mechanism 70, a decrease in design margin is suppressed. Therefore, the movement 4 and the timepiece 1 can be easily assembled and the manufacturing cost can be reduced. In addition, many parts can be arranged around the regulation lever 71, and the movement 4 and timepiece 1 with multiple functions can be provided.

In this embodiment, the biasing member 90 is locked to the locking portion 66 protruding into the recess 64 of the second stop 12, but the biasing member is locked to the side wall of the recess 64, for example. A second support may be formed as shown in FIG.

[Second embodiment]
Next, a second embodiment will be described with reference to FIG. In the first embodiment, the contact portion 84 of the correcting lever 71 is provided as a separate member from the lever main body 82 . In contrast, the second embodiment differs from the first embodiment in that the contact portion 184 of the correcting lever 171 is provided as the same member as the lever main body 182 . Further, the second embodiment differs from the first embodiment in that the second arm 173 is formed to be flexibly deformable. Configurations other than those described below are the same as those of the first embodiment.

FIG. 7 is a plan view of part of the movement according to the second embodiment as seen from the front side, and shows a state in which the winding stem 13 is at the zero stage position.
As shown in FIG. 7, the lever main body 182 extends in the second arm 173 of the correcting lever 171 with a width approximately equal to that of the biasing member 90 when viewed from the front side, and is flexibly deformable. The contact portion 184 is integrally formed of the same member as the lever body 182 . The contact portion 184 is formed by bending a plate material forming the lever body 182 toward the front side at the tip of the second arm 173 . The contact portion 184 is formed in line contact with the outer peripheral surface of the balance wheel 53 of the balance 51 .

FIG. 8 is a plan view of part of the movement according to the second embodiment as seen from the front side, showing a state in which the winding stem 13 is at the first stage position.
As shown in FIG. 8, when the winding stem 13 is at the first stage position, the contact portion 83 contacts the conical portion 13b of the winding stem 13 from the upstream side in the first direction L1. Also, the contact portion 184 contacts the outer peripheral surface of the balance wheel 53 . At this time, the lever body 182 is flexurally deformed at the second arm 173 of the correcting lever 171 . The torque in the second direction L2 generated by the lever body 182 is smaller than the torque in the first direction L1 generated by the biasing member 90 . Since the contact portion 83 is in contact with the winding stem 13 from the upstream side in the first direction L1, transmission of the biasing force of the biasing member 90 to the balance 51 via the contact portion 184 is restricted.

According to 2nd Embodiment described above, in addition to the effect similar to 1st Embodiment, there exist the following effects.
In this embodiment, the correcting lever 171 includes a second arm 173 that is formed to be flexibly deformable. The contact portion 83 contacts the winding stem 13 while the contact portion 184 is in contact with the balance 51 .
According to this configuration, since the rotation of the lever body 182 by the biasing member 90 is restricted by bringing the abutting portion 83 into contact with the winding stem 13, only the restoring force due to the flexural deformation of the second arm 173 is applied. The portion 184 can act on the balance 51 . Thereby, the contact pressure between the adjustment lever 171 and the balance 51 can be reduced. Therefore, damage to the balance 51 due to contact with the setting lever 171 can be suppressed.
Further, when the adjustment lever 171 is separated from the balance 51 , the second arm 173 is restored so that the adjustment lever 171 flips the balance 51 and applies a rotational force to the balance 51 . As a result, the operation of the balance 51 can be restarted quickly.

[Third embodiment]
Next, a third embodiment will be described with reference to FIGS. 9 to 11. FIG. In the first embodiment, the setting lever 71 is rotatably supported by the center bridge 12 . In contrast, the third embodiment differs from the first embodiment in that the setting lever 271 is supported by the center bridge 12 so as to be able to move in parallel. Configurations other than those described below are the same as those of the first embodiment.

FIG. 9 is a plan view of part of the movement according to the third embodiment, viewed from the front side.
As shown in FIG. 9 , the recessed portion 64 of the second bridge 12 has a first recessed portion 267 and a second recessed portion 268 . The second recess 268 is formed deeper than the first recess 267 (see also FIG. 11). The entire second recess 268 is formed inside the first recess 267 when viewed from the front side. The first recess 267 and the second recess 268 are each formed with a constant depth. The second recess 268 includes a first opening 64a and a second opening 64b.

A lever guide pin 266 is arranged on the second stop 12 instead of the engaging portion 66 of the first embodiment. A pair of lever guide pins 266 are provided. The lever guide pin 266 protrudes from the bottom surface of the second recess 268 to the front side. The pair of lever guide pins 266 are arranged side by side in the axial direction of the winding stem 13 . The lever guide pin 266 is formed in a cylindrical shape. In this embodiment, the lever guide pin 266 is formed of a member separate from the center bridge 12 and press-fitted into a hole formed in the center bridge 12 . The lever guide pin 266 is formed so as not to protrude beyond the surface of the second stop 12 and to protrude further than the bottom surface of the first recess 267 .

FIG. 10 is a cross-sectional view showing the movement according to the third embodiment. FIG. 11 is a perspective view showing a second stop, a setting lever and an urging member according to the first embodiment; In addition, in FIG. 11, the biasing member 290 is indicated by a phantom line for the sake of convenience.
As shown in FIGS. 10 and 11 , the train wheel setting mechanism 270 includes a setting lever 271 and an urging member 290 .

The correcting lever 271 is arranged in the second concave portion 268 of the second bridge 12 . A portion of the correcting lever 271 that overlaps the center bridge 12 when viewed from the front side is arranged so as not to protrude further to the front side than the bottom surface of the first concave portion 267 of the center bridge 12 . The setting lever 271 is supported by the center bridge 12 so as to be displaceable in the axial direction of the winding stem 13 . The setting lever 271 protrudes outside the center bridge 12 from the second recess 268 through the first opening 64a and the second opening 64b. The setting lever 271 engages with a member that is displaced in conjunction with the axial displacement of the winding stem 13 and is formed so as to be able to come into contact with the outer peripheral surface of the balance wheel 53 of the balance 51 .

Specifically, the regulation lever 271 has the following configuration. The correcting lever 271 includes a lever body 282 supported by the second bridge 12 , and an engaging portion 283 and a contact portion 284 supported by the lever body 282 .

The lever main body 282 is formed of a plate material having a thickness in the front-back direction. The lever body 282 is arranged along the bottom surface of the second recess 268 . The lever body 282 is formed thinner than the depth of the second recess 268 with respect to the bottom surface of the first recess 267 . Guide holes 285 into which the pair of lever guide pins 266 are inserted are formed in the lever body 282 . The guide hole 285 extends in the axial direction of the winding stem 13 . A guide hole 285 and a lever guide pin 266 allow the lever body 282 to move the winding stem 13 axially in parallel with respect to the second bridge 12 , and control the axial movement range of the winding stem 13 with respect to the second bridge 12 . stipulated.

The lever body 282 includes a base 286 having a guide hole 285 formed therein and an arm 287 extending from the base 286 . The base portion 286 extends in the axial direction of the winding stem 13 . A first end portion 286a of the base portion 286 is formed so as to protrude to the outside of the second stop 12 through the second opening portion 64b. Arm 287 extends from the middle of base 286 . The arm 287 protrudes to the outside of the center bridge 12 through the first opening 64a. In the illustrated example, a pair of guide holes 285 are formed so that the lever guide pins 266 are inserted one by one. may be

The engaging portion 283 engages the clutch wheel 22 . The engaging portion 283 is formed so as to be able to come into contact with the teeth of the wheel 22 from the center side of the movement 4 . The engaging portion 283 is integrally formed of the same member as the lever main body 282 . The engaging portion 283 is formed by bending a plate material forming the lever body 282 toward the front side at the tip of the arm 287 .

As shown in FIG. 9 , an intermediate portion of the engaging portion 283 seen from the front side intersects the central axis of the winding stem 13 and extends in a direction orthogonal to the axial direction of the winding stem 13 . Both ends of the engaging portion 283 viewed from the front side extend in a direction away from the toothed portion of the main wheel 22 as the distance from the center axis of the winding stem 13 increases when viewed from the front side. This prevents the edge of the engaging portion 283 from coming into contact with the toothed portion of the wheel 22 .

As shown in FIGS. 10 and 11, at least a portion of the contact portion 284 is arranged at the same position as the balance wheel 53 of the balance 51 in the front-back direction. The contact portion 284 is formed so as to be able to contact the balance wheel 53 from the winding stem 13 side. The contact portion 284 is integrally formed of the same member as the lever body 282 . The contact portion 284 is formed by bending the plate material forming the lever body 282 toward the front side at the first end portion 286a of the base portion 286 . The contact portion 284 has a base end connected to the base portion 286 and extends in a direction orthogonal to the axial direction of the winding stem 13 when viewed from the front side. The contact portion 284 is formed to be flexibly deformable.

As shown in FIG. 9 , the biasing member 290 biases the setting lever 271 against the center bridge 12 in the direction in which the engagement portion 283 contacts the spinning wheel 22 . The biasing member 290 is arranged in the recess 64 of the second bridge 12 . A portion of the urging member 290 that overlaps the center bridge 12 when viewed from the front side is arranged so as not to protrude further to the front side than the surface of the center bridge 12 . The biasing member 290 includes a supported portion 291 supported by the second bridge 12 and a spring portion 292 extending from the supported portion 291 . The supported portion 291 is formed of a plate material having a thickness in the front-back direction. The supported portion 291 is arranged so as to overlap the first recessed portion 267 and the second recessed portion 268 when viewed from the front side. The supported portion 291 is arranged along the bottom surface of the first recess 267 and the surface of the lever body 282 of the adjustment lever 271 . The supported portion 291 is formed thinner than the depth of the first concave portion 267 . A hole into which the lever guide pin 266 is press-fitted is formed in the supported portion 291 . Thereby, the supported portion 291 is fixed to the second bridge 12 .

The spring portion 292 is a cantilever extending from the supported portion 291 . Approximately the entire spring portion 292 except for the tip portion overlaps the first concave portion 267 when viewed from the front side. The spring portion 292 protrudes to the outside of the second stop 12 through the first opening 64a. The tip of the spring portion 292 is located outside the second bridge 12 and is bent toward the back side. The tip of the spring portion 292 contacts the first end portion 286 a of the base portion 286 of the lever body 282 .

Next, the operation of the gear train setting mechanism 270 will be described.
When the winding stem 13 is at the zero stage position, the engaging portion 283 of the setting lever 271 abuts on the teeth of the handwheel 22 located at a predetermined position in the axial direction of the winding stem 13 from the center side of the movement 4. there is At this time, the contact portion 284 is separated from the balance wheel 53 of the balance 51 toward the winding stem 13 side.

When the winding stem 13 is displaced from the 0th stage position to the 1st stage position, the handwheel 22 is displaced from the predetermined position toward the center of the movement 4 . Then, the engaging portion 283 is displaced toward the center of the movement 4 as the handwheel 22 moves. As a result, the setting lever 271 biased by the biasing member 290 is displaced in the axial direction of the winding stem 13 while resisting the biasing force of the biasing member 290 . The contact portion 284 approaches and comes into contact with the outer peripheral surface of the balance wheel 53 as the engaging portion 283 moves toward the center of the movement 4 . At this time, the contact portion 284 may be flexurally deformed.

When the winding stem 13 is displaced from the 1st stage position to the 0th stage position, the handwheel 22 is displaced toward the outside of the movement 4 . Since the urging member 290 urges the setting lever 271 in the direction in which the engaging portion 283 abuts on the handwheel 22, the setting lever 271 moves to the outside of the movement 4 as the handwheel 22 is displaced. Displace toward. Then, the contact portion 284 is separated from the outer peripheral surface of the balance wheel 53 .

According to the third embodiment described above, in addition to the same effects as those of the first embodiment, the following effects are obtained.
In this embodiment, the correcting lever 271 includes a lever body 282 supported by the second stop 12, an engaging portion 283 supported by the lever body 282 and formed to engage with the wheel 22, and a lever body. and a contact portion 284 supported by 282 and capable of contacting the balance 51 .
According to this configuration, by displacing the winding stem 13 in the axial direction, the engaging portion 283 can be displaced together with the lever main body 282 as the handwheel 22 is displaced. As a result, the contact portion 284 supported by the lever body 282 can be brought into contact with and separated from the balance 51 . Therefore, the setting lever 271 can be operated in conjunction with the winding stem 13 .

Further, the correction lever 271 includes a contact portion 284 which is formed to be flexibly deformable.
According to this configuration, the contact pressure between the adjustment lever 271 and the balance 51 can be reduced by flexurally deforming the contact portion 284 . Therefore, it is possible to suppress damage to the balance 51 due to contact with the setting lever 271 .

[Fourth Embodiment]
Next, a fourth embodiment will be described with reference to FIGS. 12 and 13. FIG. In the first embodiment, the support pin 81 of the correcting lever 71 is press-fitted into the center bridge 12 . In contrast, the fourth embodiment differs from the first embodiment in that the support pin 381 of the correcting lever 71 is attached to the second stop 12 by screw connection. Configurations other than those described below are the same as those of the first embodiment.

FIG. 12 is a plan view of part of the movement according to the fourth embodiment, viewed from the front side. FIG. 13 is a cross-sectional view showing a movement according to the fourth embodiment.
As shown in FIGS. 12 and 13, the support pin 381 includes an internal threaded socket 385 inserted into the pin hole 65 of the second stop 12 from the back side, and an external thread 386 screwed into the internal threaded socket 385. . The female threaded socket 385 is formed in a cylindrical shape extending in the front and back direction, and the inner peripheral surface thereof is threaded. The female screw socket 385 protrudes from the bottom surface of the concave portion 64 of the second bridge 12 to the front side. A lever body 82 of the correcting lever 71 is attached to the outer peripheral surface of the female threaded socket 385 . A collar portion that fits into the counterbore of the pin hole 65 is provided at the end portion on the back side of the female screw socket 385 . The male thread 386 is screwed into the female threaded socket 385 from the front side. The head of the male screw 386 protrudes radially outward from the outer peripheral surface of the female screw socket 385 . The support pin 381 holds the lever body 82 between the bottom surface of the recess 64 and the head of the screw 386 .

According to the fourth embodiment described above, in addition to the same effects as those of the first embodiment, the following effects are obtained.
In this embodiment, the support pin 381 holds the lever main body 82 between the head of the male screw 386 and the second stop 12 .
According to this configuration, the lever body 82 can be easily removed from the center bridge 12 compared to the configuration in which the lever body 82 is held between the center bridge 12 and the center bridge 12 by the support pin press-fitted into the center bridge 12. can be done. Therefore, it is possible to provide the train wheel setting mechanism 370 with excellent maintainability.

[Fifth embodiment]
Next, a fifth embodiment will be described with reference to FIGS. 14 and 15. FIG. In the second embodiment, the setting lever 171 is arranged on the side opposite to the main plate 10 with the second bridge 12 interposed therebetween. In contrast, the fifth embodiment differs from the second embodiment in that the correcting lever 471 is arranged between the center bridge 412 and the main plate 10 . Configurations other than those described below are the same as those of the first embodiment.

FIG. 14 is a plan view of part of the movement according to the fifth embodiment, viewed from the front side. FIG. 15 is a sectional view showing the movement according to the fifth embodiment.
As shown in FIGS. 14 and 15, the center bridge 412 is formed approximately front and back symmetrical with the center bridge 12 of the second embodiment. A concave portion 464 of the center bridge 412 is formed on the back surface of the center bridge 412 and recessed toward the front side.

The correcting lever 471 includes a lever body 482 supported by the center bridge 412 via the support pin 81 , and a contact portion 483 and a contact portion 484 supported by the lever body 482 . A portion of the lever body 482 that overlaps the center bridge 412 when viewed from the back side is arranged so as not to protrude further to the back side than the back surface of the center bridge 412 . The lever main body 482 is formed to be flexibly deformable. The contact portion 483 is arranged to protrude from the lever main body 482 to the rear side. The contact portion 484 is arranged outside the center bridge 412 . At least part of the contact portion 484 is arranged at the same position as the balance wheel 53 of the balance 51 in the front and back direction. The contact portion 484 is integrally formed of the same member as the lever body 482 . The contact portion 484 is formed by bending a plate material forming the lever body 482 toward the front side at the tip of the second arm 173 .

The base end of the biasing member 490 is coupled to the lever main body 482 at a position overlapping the center bridge 412 when viewed from the back side. The entire biasing member 490 is disposed within the recess 464 .

According to the fifth embodiment described above, in addition to the same effects as those of the second embodiment, the following effects are obtained.
In this embodiment, the correcting lever 471 is arranged between the center bridge 412 and the main plate 10 .
According to this configuration, it is possible to prevent the setting lever 471 from occupying the space on the side opposite to the main plate 10 across the second bridge 412 . Therefore, it is possible to improve the degree of freedom in the shape of parts other than the setting lever 471 and the biasing member 490 which are arranged on the opposite side of the main plate 10 with the second stop 412 interposed therebetween.

It should be noted that the present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are conceivable within its technical scope.
For example, in the above embodiment, the support member that supports the setting lever is the second support, but it is not limited to this. For example, the first bridge that supports the rotating bodies such as the barrel wheel 31, the third wheel & pinion 33, the fourth wheel & pinion 34, and the second pinion 35 together with the main plate 10 may support the setting lever.

In the above-described embodiment, the center wheel & pinion 32 is supported by the center bridge 12 via the bearings 26 held by the center bridge 12, but the structure for supporting the center wheel & pinion by the center bridge is not limited to this. . For example, the center wheel and pinion may be supported by the center bridge by being attached to the outer peripheral side of the pipe supported by the center bridge.

Further, in the above embodiment, the setting lever is formed so as to be able to come into contact with the balance wheel 53 of the balance 51 on the outer side of the second bridge when viewed from the front side. However, the setting lever may be formed so as to be in contact with the balance wheel at a position overlapping the second bridge when viewed from the front side.

In the third embodiment, parallel movement of the lever main body 282 with respect to the center bridge 12 is caused by the pair of lever guide pins 266 provided on the center bridge 12 and the guide hole 285 provided in the correcting lever 271. being guided. However, the mechanism for guiding the parallel movement of the lever body with respect to the second bridge is not limited to this. For example, the lever guide pin may be formed in a shape extending in the movement direction of the lever body when viewed from the front side. For example, the parallel movement of the lever body with respect to the second bridge may be guided by the lever body slidingly contacting the side wall surface of the concave portion of the second bridge.

Further, in the third embodiment, the biasing member 290 biases the correction lever 271 so that the correction lever 271 is engaged with the spinning wheel 22 . However, the present invention is not limited to this. For example, the setting lever may be displaced in conjunction with the displacement of the handwheel by engaging the setting lever with the handwheel in a non-releasable manner without using an urging member. may be configured. Further, the setting lever may be engaged with a member that is displaced in conjunction with the axial displacement of the winding stem 13, and may be engaged with a mandrel or a bar, for example.

In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the scope of the present invention, and the above-described embodiments and modifications may be appropriately combined. good. For example, the first embodiment may be combined with the third embodiment, and the setting lever may be engaged with a member that is displaced in conjunction with the axial displacement of the winding stem 13 .

1... Clock 4... Movement (movement for watch) 7... Minute hand 10... Main plate 12, 412... Center bridge (receiving member) 13... Wind stem 22... Spinning wheel (interlocking part) 32... Center wheel (second rotation) Body) 51 Balance (first rotating body) 64, 464 Recess 70, 170, 270, 370, 470 Gear train regulation mechanism 71, 171, 271, 471 Regulation lever 82, 182, 282 Lever body 83, 483... Contact portion 84, 184, 284... Contact portion 90, 290, 490... Biasing member 173... Second arm (elastic deformation portion) 283... Engagement portion 284... Contact portion (elastic deformation portion)

Claims (12)

a first rotating body and a second rotating body supported by the main plate;
a setting lever that is provided so as to be able to come into contact with and separate from the first rotating body and that operates in conjunction with the winding stem;
a receiving member that supports the second rotating body together with the main plate and supports the correcting lever;
with
The second rotating body is a center wheel and pinion assembled with a cannon pinion to which a minute hand is attached,
A gear train regulation mechanism characterized by : a first rotating body and a second rotating body supported by the main plate;
a setting lever that is provided so as to be able to come into contact with and separate from the first rotating body and that operates in conjunction with the winding stem;
a receiving member that supports the second rotating body together with the main plate and supports the correcting lever;
a biasing member that biases the adjustment lever against the receiving member ;
A gear train adjustment mechanism comprising: The receiving member is formed with a recess that accommodates the regulation lever and the biasing member.
The gear train setting mechanism according to claim 2 , characterized in that: The biasing member is provided integrally with the correcting lever,
4. The gear train setting mechanism according to claim 2 or 3 , characterized in that: The regulation lever is
a lever body supported by the receiving member;
a contact portion supported by the lever body and in contact with the winding stem by the biasing force of the biasing member;
a contact portion supported by the lever body and capable of contacting the first rotating body;
comprising a
The train wheel setting mechanism according to any one of claims 2 to 4 , characterized in that: An interlocking part displaced in conjunction with the axial displacement of the winding stem,
The regulation lever is
a lever body supported by the receiving member;
an engaging portion supported by the lever body and formed to be engageable with the interlocking portion;
a contact portion supported by the lever body and capable of contacting the first rotating body;
comprising
The train wheel setting mechanism according to any one of claims 2 to 4 , characterized in that: The correcting lever includes an elastically deformable portion that is flexibly deformable.
The train wheel setting mechanism according to any one of claims 1 to 6 , characterized in that: The correcting lever has an elastically deformable portion formed to be flexibly deformable,
The contact portion contacts the winding stem while the contact portion is in contact with the first rotating body.
The gear train setting mechanism according to claim 5 , characterized in that: The correcting lever is arranged on the side opposite to the main plate with the receiving member interposed therebetween,
The train wheel setting mechanism according to any one of claims 1 to 8 , characterized in that: The correcting lever is arranged between the receiving member and the base plate,
The train wheel setting mechanism according to any one of claims 1 to 8 , characterized in that: A timepiece movement comprising the gear train setting mechanism according to any one of claims 1 to 10 . A timepiece comprising the timepiece movement according to claim 11 .

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