JP6787099B2 - Watch movements and mechanical watches - Google Patents

Description

The present invention relates to a watch movement and a mechanical timepiece equipped with an automatic winding mechanism of a mainspring.

Conventionally, as an automatic hoisting mechanism of a Zenmai in a mechanical watch, a rotary weight, an eccentric wheel that rotates in conjunction with the rotary weight, a claw lever attached to the eccentric wheel and provided with a push claw and a pull claw, and a claw. Some are equipped with a transmission wheel that engages with the push and pull claws of the lever to rotate the square hole wheel. According to this mechanism, the eccentric wheel rotates in conjunction with the rotary weight, so that the claw lever moves forward and backward in the direction toward and away from the transmission wheel. Then, the transmission wheel rotates in one direction in conjunction with the advance / retreat movement of the claw lever, the square hole wheel rotates in conjunction with the transmission wheel, and the Zenmai is wound up (see, for example, Patent Document 1).
The automatic hoisting mechanism of the self-winding watch of Patent Document 1 includes a first transmission intermediate vehicle that rotates in conjunction with a rotary weight, a first transmission vehicle (eccentric vehicle) that rotates in conjunction with the first transmission intermediate vehicle, and the like. It is equipped with a claw lever and a second transmission wheel (transmission wheel).
Further, the self-winding watch of Patent Document 1 is provided with an incense box wheel, a branch wheel (second wheel), a third wheel, a fourth wheel, and an escape wheel as a basic train wheel, and the back cover side of the incense box wheel is one. The back cover side of the branch wheel is pivotally supported by the second receiver, and the back cover side of the third wheel, the fourth wheel and the escape wheel is pivotally supported by the third receiver.
The back cover side of the first transmission intermediate vehicle and the first transmission vehicle in the automatic hoisting mechanism is pivotally supported by the third receiver, and the back cover side of the second transmission wheel is pivotally supported by the transmission receiver. ..

Japanese Unexamined Patent Publication No. 11-183645

In the self-winding timepiece of Patent Document 1, a plurality of receiving members are provided so as to overlap each other in the thickness direction. There is a demand for thinner self-winding watches.

An object of the present invention is to provide a watch movement and a mechanical watch that can be made thinner.

The movement for a watch of the present invention includes a basic wheel train including an incense box wheel, an escape wheel, an escape wheel, and a plurality of gears that rotate the escape wheel in conjunction with the incense box wheel, a square hole wheel, a rotary weight, and the like. An automatic hoisting wheel train that rotates the square hole wheel in conjunction with the rotary weight to wind up a Zenmai, a main plate, and a train wheel receiver composed of a single receiving member provided between the main plate and the rotary weight. The basic train wheel and the automatic hoisting wheel train are provided between the main plate and the train wheel receiver in the axial direction, and the rotary weight side is pivotally supported by the wheel train receiver. It is characterized by that.

In the present invention, the basic train wheel and the self-winding wheel train are pivotally supported by one receiving member on the back cover side. Therefore, the watch movement can be made thinner as compared with the case where the back cover side of the basic train wheel and the self-winding wheel train is pivotally supported by a plurality of receiving members overlapping in the thickness direction.

In the watch movement of the present invention, the basic wheel train is the second wheel that meshes with the incense box wheel, the third wheel that meshes with the second wheel, and the fourth wheel that meshes with the third wheel and rotates the escape wheel. The watch movement is provided on the side opposite to the rotary weight side with respect to the main plate, and includes a minute wheel that rotates in conjunction with the second wheel. In a plan view, the second wheel is provided. It is preferable that the rotating shaft of the fourth wheel and the rotating shaft of the fourth wheel do not overlap, and the fourth wheel and the branch wheel are provided coaxially.

Since the rotation shaft of the second wheel and the rotation axis of the fourth wheel do not overlap in a plan view, the rotary weight side of the second wheel and the fourth wheel can be pivotally supported by a common train wheel receiver.
Further, since the minute wheel to which the minute hand is attached is provided on the side opposite to the rotary weight side with respect to the main plate, even if the fourth wheel and the minute wheel are provided coaxially, the rotary weight side of the fourth wheel is provided. It can be supported by a train wheel.
According to this, the rotary weight side of the basic train wheel and the self-winding wheel train can be pivotally supported by a common train wheel receiver, and the pointer shaft of the minute hand can be provided coaxially with the rotary shaft of the fourth wheel. it can.

In the watch movement of the present invention, the self-winding wheel train is attached to and attached to an eccentric wheel that rotates in conjunction with the rotary weight, a transmission wheel that rotates the square hole wheel, and the eccentric wheel. It is provided with a claw lever that engages with the transmission wheel and moves forward and backward in the direction of approaching and moving away from the transmission wheel in conjunction with the rotation of the eccentric wheel, and in a plan view, the gangikana in the basic train wheel. It is preferable that the rotating shaft of the gear that meshes with the eccentric wheel does not overlap with the rotating shaft of the eccentric wheel.

The gear that meshes with the escape wheel is, for example, the fourth wheel.
According to the present invention, since the rotation axis of the fourth wheel and the rotation axis of the eccentric wheel do not overlap in a plan view, the fourth wheel and the eccentric wheel can be pivotally supported by a common train wheel on the rotary weight side. ..

The watch movement of the present invention includes a winding stem and a manual winding train wheel that rotates the square hole wheel in conjunction with the rotation of the winding stem, and at least a part of the manual winding train wheel. It is preferable that the gear is provided between the main plate and the train wheel receiver in the axial direction, and the rotary weight side is pivotally supported by the wheel train receiver.

According to the present invention, the number of receiving members can be reduced as compared with the case where the rotary weight side of the manual hoisting wheel train is pivotally supported by a receiving member different from the train wheel receiving member.

The mechanical timepiece of the present invention is characterized by including the above-mentioned timepiece movement and a case in which the timepiece movement is housed.

Since the movement for watches is easy to be thinned, mechanical watches can also be thinned.
Further, as compared with the case where the rotary weight side of the basic train wheel is pivotally supported by a plurality of receiving members, it is possible to reduce the influence of manufacturing variations of the receiving members and improve the accuracy of the timepiece.

Top view of the timepiece according to the embodiment of the present invention. Top view of the movement in the embodiment. Sectional drawing of the main part (basic train wheel) of the movement in embodiment. Sectional drawing of the main part (ankle, balance, small second wheel) of the movement in embodiment. Sectional drawing of the main part (manual hoisting mechanism) of the movement in embodiment. Sectional drawing of the main part (automatic hoisting mechanism) of a movement in an embodiment. The plan view of the main part (self-winding age wheel train) of the movement in an embodiment. The figure which shows the positional relationship between the claw lever which moves forward and backward and a through hole in an embodiment. The figure which shows the positional relationship between the claw lever which moves forward and backward and a through hole in an embodiment. The figure which shows the positional relationship between the claw lever which moves forward and backward and a through hole in an embodiment. The figure which shows the positional relationship between the claw lever which moves forward and backward and a through hole in an embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
[Clock configuration]
FIG. 1 is a plan view showing a timepiece 1 which is a mechanical timepiece.
The clock 1 includes a cylindrical outer case 11, and a disk-shaped dial 12 is arranged on the inner peripheral side of the outer case 11. Of the two openings of the outer case 11, the opening on the front surface side of the watch is closed by the cover glass 13, and the opening on the back surface side is closed by a back cover (not shown). Here, the outer case 11 and the back cover form a case.

The clock 1 includes a movement 2 (see FIG. 2), a small second hand 21, a minute hand 22, an hour hand 23, and a date wheel 24 housed in a case.
The pointers 21 to 23 are arranged on the front surface side of the dial 12, and the movement 2 is arranged on the back surface side of the dial 12. Each of the pointers 21 to 23 is attached to a rotating shaft 361, 712, 722 included in the movement 2 and is driven by the movement 2. The minute hand 22 and the hour hand 23 are attached to the rotating shafts 712 and 722 provided at the center of the plane of the dial 12, and the small second hand 21 is the rotating shaft provided at the center of the plane of the dial 12 in the 6 o'clock direction. It is attached to 361.

Further, the dial 12 is provided with a calendar small window 12A, and the numbers of the date wheel 24 can be visually recognized from the calendar small window 12A. The number of the date wheel 24 represents the "day" of the date.
A crown 14 is provided on the side surface of the outer case 11. By operating the crown 14, input can be performed according to the operation.

[Movement configuration]
FIG. 2 is a plan view of the movement 2 (clock movement) of the watch 1 as viewed from the back cover side. The upper side of the drawing in FIG. 2 is the 3 o'clock direction side, the lower side of the drawing is the 9 o'clock direction side, the right side of the drawing is the 12 o'clock direction side, and the left side of the drawing is the 6 o'clock direction side. In FIG. 2, of the receiving members, only the train wheel receiving 64 is indicated by a chain double-dashed line, and the remaining receiving members are not shown. Further, in FIG. 2, the rotary weight 51, the bearing 52, and the like are not shown.
The movement 2 includes a basic train wheel 30, a small second wheel 36, an ankle 37, a balance 38, a manual hoisting mechanism 40, and an automatic hoisting mechanism 50.

3 to 6 are cross-sectional views of a main part of the movement 2. The upper side of the drawings in FIGS. 3 to 6 is the back cover side, and the lower side of the drawings is the dial 12 side.
The movement 2 includes a main plate 61, a winding stem receiver 62, a winding receiver 63, and a train wheel receiver 64 from the dial 12 toward the back cover side. The train wheel receiver 64 is also referred to as a rotary weight receiver.

[Basic train wheel]
As shown in FIGS. 2 to 4, the basic train wheel 30 includes a barrel wheel 31, a second wheel 32, a third wheel 33, a fourth wheel 34, and an escape wheel 35.

[Sollar box car]
As shown in FIGS. 2 and 3, the barrel wheel 31 includes a barrel true 311, a barrel gear 312, a barrel lid 313, and a barrel (not shown) housed in a space surrounded by the barrel gear 312 and the barrel lid 313. It has.
The barrel Shin 311 is provided on the 1 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is pivotally supported by the main plate 61 and the train wheel receiver 64.
The mainspring is wound by rotating the barrel true 311 by the manual winding mechanism 40 or the automatic winding mechanism 50, which will be described later. When the wound spring is rewound, the barrel gear 312 rotates around the barrel true 311.

[Second car]
The second wheel 32 includes a rotating shaft 323, a second kana 321 and a second gear 322. The rotating shaft 323 and the second kana 321 are integrally formed. The rotation shaft 323 is provided on the 10 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is pivotally supported by the main plate 61 and the train wheel receiver 64. The second kana 321 meshes with the barrel gear 312, and the second wheel 32 rotates in conjunction with the barrel gear 312.
Since the clock 1 is separately provided with a minute wheel 71 to which the pointer 22 (minute hand) is attached, the rotation shaft 323 of the second wheel 32 can be provided at a position deviated from the center of the plane of the dial 12.

[Third car]
The third wheel 33 includes a rotating shaft 333, a third kana 331, and a third gear 332. The rotating shaft 333 and the third kana 331 are integrally formed. The rotation shaft 333 is provided on the 10 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is provided on the plane center side of the dial 12 with respect to the rotation shaft 323 of the second wheel 32. Further, the rotating shaft 333 is pivotally supported by the main plate 61 and the train wheel receiving 64. The third kana 331 meshes with the second gear 322, and the third wheel 33 rotates in conjunction with the second wheel 32.

[Fourth car]
The fourth wheel 34 includes a rotating shaft 343, a fourth kana 341, and a fourth gear 342. The rotating shaft 343 and the fourth kana 341 are integrally formed. The rotating shaft 343 is provided at the center of the plane of the dial 12 in a plan view, and is pivotally supported by the main plate 61 and the train wheel receiver 64. The fourth kana 341 meshes with the third gear 332, and the fourth wheel 34 rotates in conjunction with the third wheel 33.

Here, on the dial 12 side of the main plate 61, a branch wheel 71 and a cylinder wheel 72 (see FIG. 3) in which a rotation axis (pointer axis) 712,722 is provided at the center of the plane of the dial 12 in a plan view, There is a back wheel on a day not shown.
The minute wheel 71 includes a rotary shaft 712, a minute gear 711, and a minute kana 713 integrally formed with the rotary shaft 712. The minute gear 711 meshes with the third wheel 331, and the minute wheel 71 rotates in conjunction with the third wheel 33. The gear of the back wheel of the sun meshes with the minute wheel 713, and the back wheel of the sun rotates in conjunction with the minute wheel 71. The cylinder wheel 72 includes a rotating shaft 722 and a tubular gear 721 integrally formed with the rotating shaft 722. The tubular gear 721 meshes with the kana of the back wheel of the sun, and the tubular wheel 72 rotates in conjunction with the back wheel of the sun.
The minute hand 22 is attached to the rotating shaft 712 of the minute wheel 71, and the hour hand 23 is attached to the rotating shaft 722 of the cylinder wheel 72.

[Gangi car]
The escape wheel 35 includes a rotating shaft 351, a first escape kana 352 (see FIG. 3), a second escape kana 353 (see FIG. 3), and an escape gear 354. The rotating shaft 351 and the first escape cana 352 are integrally formed. The rotating shaft 351 is provided on the 6 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is pivotally supported by the main plate 61 and the train wheel receiver 64. The first escape wheel 352 meshes with the fourth gear 342, and the escape wheel 35 rotates in conjunction with the fourth wheel 34.

[Uncle and balance]
As shown in FIGS. 2 and 4, the ankle 37 includes two claw stones that mesh with the escape gear 354, feeds the escape gear 354 according to the rotational reciprocating motion of the balance 38, and controls the rotation speed of the escape wheel 35. To do. As a result, the rotation speeds of the barrel wheel 31, the second wheel 32, the third wheel 33, the fourth wheel 34, and the small second wheel 36 are controlled.
The clock 1 is provided with a regulation lever 81 (see FIG. 2), and when the time is adjusted, the regulation lever 81 comes into contact with the balance wheel of the balance 38, and the movement of the balance 38 is restricted. The regulation lever 81 engages with the winding wheel 43, which will be described later, attached to the winding stem 41, and rotates in conjunction with the movement of the winding wheel 43 in the winding stem axis direction. The regulation lever 81 comes into contact with the tenwa when the winding stem 41 is pulled two steps from the state of being pushed toward the center of the movement 2 (0 step position) and the time can be adjusted.

[Small second car]
As shown in FIGS. 2 and 4, the small second wheel 36 includes a rotating shaft (pointer shaft) 361 to which the small second hand 21 is attached, and a small second gear 362.
The rotating shaft 361 is on the 6 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is provided on the side opposite to the plane center side of the dial 12 with respect to the rotating shaft 351 of the escape wheel 35. There is. Further, the back cover side of the rotating shaft 361 is pivotally supported by the winding stem receiver 62, the dial 12 side of the rotating shaft 361 is pivotally supported by the main plate 61, and the tip protrudes toward the dial 12 side of the main plate 61. ..
The small second gear 362 meshes with the second escape wheel 353, and the small second wheel 36 rotates in conjunction with the escape wheel 35. Here, the small second wheel 36 rotates at the same speed as the fourth wheel 34.

[Manual hoisting mechanism]
As shown in FIGS. 2 and 5, the manual hoisting mechanism 40 includes a winding wheel 41, a chisel 42, a tsuzumi wheel 43, a round hole wheel 44, a square hole transmission wheel 45, 46, 47, and a square hole wheel 48. I have. Here, the chisel 42, the tsuzumi wheel 43, the round hole wheel 44, and the square hole transmission wheels 45 to 47 form a manual hoisting wheel train that rotates the square hole wheel 48 in conjunction with the rotation of the winding stem 41. ..
The winding stem 41 is provided between the main plate 61 and the winding stem receiver 62 and the winding stem receiver 63. The squeeze wheel 42, the squeeze wheel 43, and the round hole wheel 44 are provided between the main plate 61 and the hoisting receiver 63.
The Tsuzumi wheel 43 is provided with a square hole passing through the center of rotation, and the winding stem 41 is inserted through this hole. As a result, the Tsuzumi wheel 43 rotates integrally with the winding stem 41.
The rotary wheel 42 is provided with a circular hole that passes through the center of rotation, and the winding stem 41 is rotatably inserted through this hole. When the winding stem 41 is in the 0-step position, the squeeze wheel 42 meshes with the squeeze wheel 43 and rotates in conjunction with the squeeze wheel 43.
The round hole wheel 44 meshes with the wheel 42 and rotates in conjunction with the wheel 42.

The square hole transmission wheels 45 to 47 and the square hole wheels 48 are provided between the hoisting receiver 63 and the train wheel receiver 64. The dial 12 side of the square hole transmission wheel 45 is pivotally supported by the hoisting receiver 63. The back cover side of the square hole transmission wheels 46 and 47 is pivotally supported by the train wheel receiver 64.
The square hole transmission wheels 45, 46, 47 rotate in conjunction with the round hole wheel 44, and rotate the square hole wheel 48. When the square hole wheel 48 rotates, the barrel Shin 311 rotates integrally with the square hole wheel 48, and the mainspring is wound up.
According to such a manual winding mechanism 40, the user can wind the mainspring by rotating the crown 14 attached to the tip of the winding stem 41.

[Automatic hoisting mechanism]
FIG. 7 is a plan view of a main part of the movement 2. As shown in FIGS. 2, 6 and 7, the automatic hoisting mechanism 50 includes a rotary weight 51 (see FIG. 6), a bearing 52 (see FIGS. 6 and 7), an eccentric wheel 53, a claw lever 54, and a transmission wheel. It is equipped with 55. Here, the eccentric wheel 53, the claw lever 54, and the transmission wheel 55 form an automatic hoisting wheel train that rotates the square hole wheel 48 in conjunction with the rotary weight 51.
In the plan view of the bearing 52, the rotation axis is provided at the center of the plane of the dial 12. The bearing 52 is provided on the back cover side of the train wheel receiver 64 and is pivotally supported by the train wheel receiver 64.
The rotary weight 51 has a semicircular shape centered on the rotation axis of the bearing 52 in a plan view (see FIG. 8). The rotary weight 51 is provided on the back cover side of the train wheel receiver 64, and is attached to the outer ring 521 of the bearing 52. As a result, the outer ring 521 rotates integrally with the rotary weight 51.

The eccentric wheel 53 includes an eccentric shaft member 532 and an eccentric gear 531 attached to the eccentric shaft member 532. The eccentric shaft member 532 is provided on the 4 o'clock direction side with respect to the plane center of the dial 12 in a plan view. The eccentric shaft member 532 is pivotally supported by a winding stem receiver 62 on the dial 12 side and a train wheel receiver 64 on the back cover side through a hole provided in the winding receiver 63.
Further, the eccentric shaft member 532 includes an eccentric shaft 532A eccentric from the rotating shaft 532B. A claw lever 54, which will be described later, is rotatably attached to the eccentric shaft 532A.
The eccentric gear 531 is provided between the hoisting receiver 63 and the train wheel receiver 64 in the axial direction. The eccentric gear 531 meshes with the rotary weight kana 522 provided on the outer circumference of the outer ring 521 of the bearing 52, and the eccentric wheel 53 rotates in conjunction with the rotary weight 51. As a result, the eccentric shaft 532A revolves around the rotation shaft 532B of the eccentric wheel 53, and the claw lever 54 attached to the eccentric shaft 532A moves forward and backward in the direction toward and away from the transmission wheel 55. The stroke of the forward / backward movement of the claw lever 54 is twice as long as the distance between the center of the rotation shaft 532B and the center of the eccentric shaft 532A.

The claw lever 54 is provided between the hoisting receiver 63 and the train wheel receiver 64, and is rotatably attached to the eccentric shaft 532A. Further, the dial 12 side of the claw lever 54 is supported by the hoisting receiver 63.
As shown in FIG. 7, the claw lever 54 is a pulling claw that extends from the base end portion 541 having a hole through which the eccentric shaft 532A is inserted and the base end portion 541 and sandwiches the transmission gear 551 of the transmission wheel 55 in a plan view. It includes a lever portion 542 and a push claw lever portion 543. Here, in a plan view, the distance between the pull claw lever portion 542 and the push claw lever portion 543 becomes wider as the distance from the base end portion 541 increases.

The pull claw lever portion 542 includes an extension portion 542A extending linearly from the base end portion 541, a bending portion 542B continuous with the extension portion 542A and curved along the outer circumference of the transmission gear 551 in a plan view. It is provided with a pull claw 542C that protrudes from the tip of the curved portion 542B toward the transmission gear 551 and engages with the transmission gear 551.
The push claw lever portion 543 includes an extension portion 543A extending linearly from the base end portion 541, a bending portion 543B continuous with the extension portion 543A and curved along the outer circumference of the transmission gear 551 in a plan view. It is provided with a push claw 543C that protrudes from the tip of the curved portion 543B toward the transmission gear 551 and engages with the transmission gear 551.
As the material of the claw lever 54, carbon tool steel (for example, SK-5, SK-4) and the like can be exemplified.

As shown in FIGS. 2, 6 and 7, the transmission wheel 55 includes a rotating shaft 553, a transmission gear 551, and a transmission kana 552. The rotating shaft 553 and the transmission kana 552 are integrally formed.
The rotation shaft 553 is provided on the 2 o'clock direction side with respect to the plane center of the dial 12 in a plan view, and is pivotally supported by the hoisting receiver 63 and the train wheel receiver 64.
The pull claw 542C and the push claw 543C of the claw lever 54 are engaged with the transmission gear 551, and the transmission wheel 55 rotates in one direction in conjunction with the advancing / retreating movement of the claw lever 54. Then, the square hole wheel 48 rotates in conjunction with the transmission wheel 55. When the square hole wheel 48 rotates, the barrel Shin 311 rotates integrally with the square hole wheel 48, and the mainspring is wound up.
According to such an automatic hoisting mechanism 50, for example, the mainspring can be hoisted by swinging the arm while the user wears the watch 1 on the arm and rotating the rotary weight 51.

[Construction of through hole of train wheel receiver]
As shown in FIG. 2, the train wheel receiver 64 overlaps the automatic hoisting train wheel in plan view, and has a circular shape in plan view at a position corresponding to the claw lever 54 as shown in FIGS. 2 and 7. It has two through holes 641 (first through hole) and through hole 642 (second through hole). An operation pin for disengaging the engagement between the claw lever 54 and the transmission wheel 55 is inserted into the through holes 641 and 642, which will be described in detail later. That is, the through holes 641 and 642 correspond to the disengagement portions for disengaging the engagement.

FIG. 7 shows a state in which the claw lever 54 is in the position (approaching position) closest to the transmission wheel 55 in the movable range in the advancing / retreating movement. That is, the distance D1 between the eccentric shaft 532A of the eccentric wheel 53 and the rotating shaft 553 of the transmission wheel 55 is the shortest. In this state, the operation pin is inserted through the through holes 641 and 642.
When the claw lever 54 is located at the approaching position, as shown in FIG. 7, in a plan view, the opening 641A on the dial 12 side of the through hole 641 is partially on the curved portion 542B side of the extending portion 542A. The remaining portion is located on the push claw lever portion 543 side of the end portion. Further, in a plan view, the center of the opening 641A is located on the push claw lever portion 543 side of the end portion.
Here, the area of the portion of the extension portion 542A that overlaps with the opening 641A may escape in a direction orthogonal to the insertion direction of the operation pin by bending the pull claw lever portion 542 even if the operation pin hits the portion. Set to the extent possible.

On the other hand, the opening 642A on the dial 12 side of the through hole 642 partially overlaps the end portion of the extension portion 543A on the curved portion 543B side, and the remaining portion is located on the pull claw lever portion 542 side of the end portion. ing. Further, in a plan view, the center of the opening 642A is located on the pull claw lever portion 542 side of the end portion.
Here, the area of the portion of the extension portion 543A that overlaps with the opening 642A may escape in a direction orthogonal to the insertion direction of the operation pin by bending the push claw lever portion 543 even if the operation pin hits the portion. Set to the extent possible.

The diameters of the openings 641A and 642A are substantially the same as the diameter of the operation pin. Further, the diameter of the opening 641B on the back cover side of the through hole 641 is larger than the diameter of the opening 641A, and the diameter of the opening 642B on the back cover side of the through hole 642 is larger than the diameter of the opening 642A.

[Positional relationship between the claw lever that moves forward and backward and the through hole]
In the present embodiment, as shown in FIG. 8, when the rotary weight 51 is located on the 9 o'clock direction side, the eccentric shaft 532A is closest to the rotary shaft 553 of the transmission wheel 55. At this time, as shown in FIG. 7, in a plan view, the opening 641A partially overlaps the pulling claw lever portion 542, and the opening 642A partially overlaps the pushing claw lever portion 543.
Next, as shown in FIG. 9, when the rotary weight 51 rotates 90 degrees clockwise when viewed from the back cover side and moves to the 6 o'clock direction side, the eccentric shaft 532A is centered on the rotary shaft 532B of the eccentric wheel 53. Then, it rotates 90 degrees counterclockwise. As a result, the claw lever 54 moves away from the transmission wheel 55. At this time, in a plan view, the opening 641A does not overlap with the pulling claw lever portion 542, and the opening 642A partially overlaps with the pushing claw lever portion 543.

Next, as shown in FIG. 10, when the rotary weight 51 further rotates 90 degrees clockwise and moves to the 3 o'clock direction side, the eccentric shaft 532A is further counterclockwise with respect to the rotary shaft 532B of the eccentric wheel 53. Rotate 90 degrees clockwise. In this case, the eccentric shaft 532A is farthest from the rotating shaft 553 of the transmission wheel 55. At this time, in a plan view, the opening 641A does not overlap with the pulling claw lever portion 542, and the opening 642A does not overlap with the pushing claw lever portion 543.
Next, as shown in FIG. 11, when the rotary weight 51 further rotates 90 degrees clockwise and moves toward the 12 o'clock direction, the eccentric shaft 532A is further counterclockwise with respect to the rotary shaft 532B of the eccentric wheel 53. Rotate 90 degrees clockwise. As a result, the claw lever 54 approaches the transmission wheel 55. At this time, in a plan view, the opening 641A partially overlaps the pull claw lever portion 542, and the opening 642A does not overlap the push claw lever portion 543.
Then, when the rotary weight 51 further rotates 90 degrees clockwise and moves toward the 9 o'clock direction, the state returns to the state shown in FIG.

That is, since the distance between the pull claw lever portion 542 and the push claw lever portion 543 becomes wider as it approaches the transmission wheel 55, when the claw lever 54 is located at a position other than the approach position (states shown in FIGS. 9 to 11). Case), in a plan view, the area overlapping the opening 641A of the pulling claw lever portion 542 and the area overlapping the opening 642A of the pushing claw lever portion 543 are larger than those in the case where the claw lever 54 is located at the approaching position. There is no such thing.
Therefore, when the claw lever 54 is located at a position other than the approaching position, even if the operation pin is inserted into the through holes 641 and 642, it is possible to prevent the claw lever 54 from being pushed by the operation pin and deformed. That is, even if the operation pin does not hit the claw lever 54 or the operation pin hits the claw lever, the claw lever 54 can be bent and moved to escape.

[How to disengage the claw lever]
In the movement 2, in order to disengage the claw lever 54 and the transmission wheel 55, first, the rotary weight 51 is moved to the 9 o'clock direction side, and as shown in FIGS. 7 and 8, through holes 641,642 Is exposed to the back cover side, and the claw lever 54 is transmitted to the position closest to the wheel 55.
Next, an operation pin (operation member) having a rounded tip is inserted into the through holes 641 and 642 from the back cover side, respectively. When the operation pin is inserted into the through hole 641, the tip of the operation pin hits the extension portion 542A. Then, when the operation pin is further inserted, the extension portion 542A slides on the tip of the operation pin and bends and moves with respect to the operation pin on the side opposite to the push claw lever portion 543 side in a plan view. That is, it moves in the direction away from the transmission gear 551. As a result, the engagement between the pull claw 542C and the transmission gear 551 is released.
When the operation pin is inserted into the through hole 642, the tip of the operation pin hits the extension portion 543A. Then, when the operation pin is further inserted, the extension portion 543A slides on the tip of the operation pin and bends and moves with respect to the operation pin on the side opposite to the pull claw lever portion 542 side in a plan view. That is, it moves in the direction away from the transmission gear 551. As a result, the engagement between the push claw 543C and the transmission gear 551 is released.
In this way, the engagement between the claw lever 54 and the transmission gear 551 can be released.

[How to unwind the mainspring]
In the movement 2, when unwinding the mainspring, first, the crown 14 is fixed with a finger to regulate the rotation of the square hole wheel 48.
Then, with the rotation of the square hole wheel 48 restricted, the engagement between the claw lever 54 and the transmission wheel 55 is disengaged by the method of disengaging the claw lever.
Then, in the state where the engagement is released, the crown 14 is rotated in the direction opposite to the winding direction. As a result, the square hole wheel 48 rotates in the direction opposite to the winding direction, and the mainspring is unwound to a predetermined position.
Instead of operating the crown 14, the rotation of the square hole wheel 48 may be restricted or rotated by fixing the square hole screw or turning the square hole screw with a screwdriver.

[Action and effect of the embodiment]
According to the clock 1, the engagement between the claw lever 54 and the transmission wheel 55 can be released without removing the train wheel receiver 64. Therefore, for example, the work can be simplified as compared with the case where the train wheel receiver 64 is removed and the automatic hoisting mechanism 50 is disassembled to disengage the engagement. It is also possible to disengage the movement 2 without removing it from the case.
Further, since the engagement between the claw lever 54 and the transmission wheel 55 can be released only by inserting the operation pin into the through holes 641 and 642, the work can be further simplified.
Further, since the openings 641B and 642B on the back cover side of the through holes 641 and 642 are larger than the diameter of the operation pin, the operation pin can be easily inserted into the through hole 641 and 642.

Since it is not necessary to remove the train wheel receiver 64 when unwinding the mainspring to a predetermined position, it is not necessary to provide a component such as a kohaze that regulates the rotation of the square hole wheel 48. That is, when the train wheel receiver 64 is removed, the automatic hoisting mechanism 50 is disassembled, and the rotation of the square hole wheel 48 is not regulated by the automatic hoisting mechanism 50. Therefore, the square hole wheel 48 rotates in the direction opposite to the winding direction, and the mainspring is completely unwound. In order to regulate this, parts such as a kohaze that prevent the square hole wheel 48 from rotating in the direction opposite to the hoisting direction are required. According to the clock 1, when the mainspring is unwound to a predetermined position, it is not necessary to remove the train wheel receiver 64, so that it is not necessary to provide the above-mentioned parts. Therefore, the cost can be reduced and the assembly process of the movement 2 can be simplified.

Since the release portion can be provided only by forming the through holes 641 and 642 in the train wheel receiver 64, the movement 2 can be easily manufactured.
When the claw lever 54 is located at a position other than the approaching position, even if the operation pin is inserted into the through holes 641 and 642, it is possible to prevent the claw lever 54 from being pushed by the operation pin and deformed.
The mainspring can be unwound by rotating the winding stem 41 in the direction opposite to the winding direction with the claw lever 54 and the transmission wheel 55 disengaged by the operation pin. Therefore, for example, the mainspring is wound. There is no need to turn the square hole screw with a screwdriver to solve it.

In a plan view, the rotating shaft 323 of the second wheel 32 and the rotating shaft 343 of the fourth wheel 34 do not overlap, so that the back cover side of the second wheel 32 and the fourth wheel 34 is connected by a common train wheel receiving 64. Can be pivotally supported. Further, in a plan view, since the rotating shaft 343 of the fourth wheel 34 and the rotating shaft 532B of the eccentric wheel 53 do not overlap, the back cover side of the fourth wheel 34 and the eccentric wheel 53 is connected by a common wheel train receiver 64. It can be supported. As a result, in the watch 1, the basic train wheel and the self-winding wheel train are pivotally supported by one receiving member (wheel train receiving 64) on the back cover side.
Therefore, the movement 2 can be made thinner as compared with the case where the back cover side of the basic train wheel and the self-winding wheel train is pivotally supported by a plurality of receiving members overlapping in the thickness direction. Further, since the number of parts can be reduced, the weight of the movement 2 can be reduced and the cost of the movement 2 can be reduced.
Further, as compared with the case where the back cover side of the basic train wheel is pivotally supported by a plurality of receiving members, it is possible to reduce the influence of manufacturing variations of the receiving members and improve the accuracy of the timepiece.

Since the minute wheel 71 to which the minute hand (pointer 22) is attached is provided on the dial 12 side with respect to the main plate 61, even if the fourth wheel 34 and the minute wheel 71 are provided coaxially, the fourth wheel 34 The back cover side can be pivotally supported by the train wheel receiver 64. As a result, in the watch 1, the back cover side of the basic train wheel and the self-winding wheel train is pivotally supported by the common train wheel receiver 64, and the pointer shaft of the minute hand is coaxial with the rotation shaft 343 of the fourth wheel 34. Can be provided on top.

Since the back cover side of the square hole transmission wheels 46 and 47 constituting the manual hoisting wheel train is pivotally supported by the train wheel receiving 64, compared with the case where the back cover side is supported by a receiving member different from the wheel train receiving 64. , The number of receiving members can be reduced.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

In the above embodiment, the clock 1 includes a minute wheel 71 to which the pointer 22 (minute hand) is attached, but the present invention is not limited thereto. For example, when the pointer shaft of the pointer 22 and the rotating shaft 343 of the fourth wheel 34 are misaligned, the branch wheel 71 may be eliminated and the pointer 22 may be attached to the rotating shaft 323 of the second wheel 32.

The back cover side of the square hole transmission wheels 46 and 47 constituting the manual hoisting wheel train is pivotally supported by the train wheel receiver 64, but the present invention is not limited thereto. For example, the back cover side of the square hole transmission wheels 46 and 47 may be pivotally supported by a receiving member different from the train wheel receiving 64.

In the above embodiment, the watch 1 includes a small second hand 21, but the present invention is not limited thereto. For example, the clock may include a second hand attached to the rotating shaft 343 of the fourth wheel 34 instead of the small second hand 21. In this case, the small second wheel 36 and the second escape wheel 353 of the escape wheel 35 are not required.

1 ... Clock, 2 ... Movement, 11 ... Exterior case, 12 ... Dial, 14 ... Crown, 30 ... Basic train wheel, 31 ... Incense box car, 32 ... Second car, 33 ... Third car, 34 ... Fourth car , 35 ... Gangi car, 36 ... Small second car, 37 ... Ankle, 38 ... Temp, 40 ... Manual hoisting mechanism, 41 ... Makishin, 42 ... Kichi car, 43 ... Tsuzumi car, 44 ... Round hole car, 45 ~ 47 ... Square hole transmission wheel, 48 ... Square hole wheel, 50 ... Automatic hoisting mechanism, 51 ... Rotating weight, 52 ... Bearing, 53 ... Eccentric wheel, 54 ... Claw lever, 55 ... Transmission wheel, 61 ... Main plate, 62 ... winding true reception, 63 ... winding reception, 64 ... wheel train reception, 71 ... minute wheel, 72 ... cylinder wheel, 311 ... incense box true, 312 ... incense box gear, 313 ... incense box lid, 321 ... second kana, 322 ... 2nd gear, 323,333,343,351,361,532B, 533,712,722 ... Rotating shaft, 331 ... 3rd kana, 332 ... 3rd gear, 341 ... 4th kana, 342 ... 4th gear, 352 ... 1st Gangi Kana, 353 ... 2nd Gangi Kana, 354 ... Gangi Gear, 362 ... Small Second Gear, 521 ... Outer Ring, 522 ... Rotating Weight Kana, 513 ... Eccentric Gear, 532 ... Eccentric Shaft Member, 532A ... Eccentric Shaft, 541 ... Base end portion, 542 ... Pull claw lever portion, 542A, 543A ... Extension portion, 542B, 543B ... Curved portion, 542C ... Pull claw, 543 ... Push claw lever portion, 543C ... Push claw, 551 ... Transmission gear, 552 ... Transmission kana, 641,642 ... through hole, 641A, 641B, 642A, 642B ... opening, 711 ... minute gear, 713 ... minute kana, 721 ... tubular gear, D1 ... distance.

Claims (5)

A basic train wheel equipped with a barrel wheel, an escape wheel, an escape wheel, and a plurality of gears that rotate the escape wheel in conjunction with the barrel wheel.
With a square hole wheel
With a rotary weight
An automatic hoisting wheel train that rotates the square hole wheel in conjunction with the rotary weight and winds the mainspring.
With the main plate
A train wheel receiver composed of one receiving member provided between the main plate and the rotary weight is provided.
The basic train wheel and the self-winding wheel train are provided between the main plate and the train wheel receiver in the axial direction, and the rotary weight side is pivotally supported by the wheel train receiver. Movement for watches. In the watch movement according to claim 1,
The basic train wheel includes a second wheel that meshes with the barrel wheel, a third wheel that meshes with the second wheel, and a fourth wheel that meshes with the third wheel and rotates the escape wheel.
The watch movement is provided on the side opposite to the rotary weight side with respect to the main plate, and includes a minute wheel that rotates in conjunction with the second wheel.
In a plan view, the rotation axis of the second wheel and the rotation axis of the fourth wheel do not overlap.
A watch movement characterized in that the fourth wheel and the branch wheel are provided on the same axis. In the watch movement according to claim 1 or 2.
The self-winding agewa
An eccentric wheel that rotates in conjunction with the rotary weight,
A transmission wheel that rotates the square hole wheel and
It is provided with a claw lever that is attached to the eccentric wheel and that engages with the transmission wheel and moves forward and backward in a direction toward and away from the transmission wheel in conjunction with the rotation of the eccentric wheel.
A watch movement characterized in that, in a plan view, the rotating shaft of a gear that meshes with the escape wheel in the basic train wheel does not overlap with the rotating shaft of the eccentric wheel. In the watch movement according to any one of claims 1 to 3.
Makishin and
A manual hoisting wheel train that rotates the square hole wheel in conjunction with the rotation of the winding stem is provided.
At least a part of the gears of the manual hoisting train wheel is provided between the main plate and the train wheel receiver in the axial direction, and the rotary weight side is pivotally supported by the wheel train receiver. Movement for watches. The watch movement according to any one of claims 1 to 4.
A mechanical watch comprising a case for accommodating the watch movement.

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