JP2023113790A - Gear train device, watch, manufacturing method for gear train device, and manufacturing method for watch - Google Patents

Abstract

To provide a gear train device capable of simply changing an installation position of a pointer without needing replacement of a support member, and a watch comprising the gear train device.SOLUTION: A gear train device comprises: a dial 6 provided with two types of third display areas 11a or 12a between a central part and a part of an outer periphery; a gear train part 17 comprising a sub-hand wheel 25 to which a third sub-hand 13 that moves above the third display areas 11a, 12a is attached; first and second support members 18, 19 that support the gear train part 17 at positions corresponding to the third sub-display areas 11a, 12a; and first and second shaft mounting holes 29a, 29b, 33a, 33b that selectively mount the sub-hand wheel 25 to any one of a plurality of positions of the first and second support members 18, 19. Accordingly, since the sub-hand wheel 25 can be selectively attached to any one of the first and second shaft mounting holes 29a, 29b, 33a, 33b, an installation position of the sub-hand wheel 25 can be changed without replacing the first and second support members 18, 19.SELECTED DRAWING: Figure 3

Description

The present invention relates to a train wheel device used in a timepiece such as a wristwatch and a timepiece having the same.

For example, as disclosed in Patent Document 1, a wristwatch includes a train wheel portion that transmits the rotation of a motor to a pointer wheel through a plurality of intermediate wheels. Also known is a structure in which a pointer is moved.

JP-A-2001-324579

The train wheel of such a wristwatch is constructed such that a plurality of intermediate wheels and pointer wheels are rotatably supported by at least two upper and lower support members. That is, each of the two support members is provided with a plurality of shaft mounting holes corresponding to each other for rotatably supporting the upper and lower portions of the shaft portion of the intermediate wheel and the upper and lower portions of the pointer shaft of the pointer wheel. there is

In such a wristwatch, when changing the installation position of the pointer, it is necessary to change the installation position of the pointer wheel, and accordingly the position of the shaft mounting hole of the support member must be changed. There is a problem that it must be newly manufactured and replaced.

The problem to be solved by the present invention is to provide a train wheel device and a timepiece equipped with the same, in which the installation position of the hands can be easily changed without the need to replace the supporting member.

The present invention comprises a dial having a display area provided between a central portion and a portion of the outer periphery, a wheel train portion including a pointer wheel to which a pointer that moves above the display area is attached, and the display area. and a plurality of shaft attachment holes provided at a plurality of locations on the support member, to which the pointer wheels are selectively attached at any of the plurality of locations. The gear train device is characterized by comprising:

According to this invention, it is possible to easily change the installation position of the hands without replacing the supporting member.

1 is an enlarged front view showing a first embodiment of a wristwatch to which the invention is applied; FIG. FIG. 2 is an enlarged front view showing a timepiece module incorporated in the wristwatch shown in FIG. 1; 3 is an enlarged rear view of a main part showing a train wheel state in the third sub-display area shown in FIG. 2; FIG. 4 is an enlarged cross-sectional view showing the main part of the timepiece module shown in FIG. 3, taken along the line AA. FIG. FIG. 4 is an enlarged rear view of a main part showing a support member in the third sub-display area shown in FIG. 3; 3 is an enlarged front view showing a state in which the installation position of the third sub-hand is changed in a different third sub-display area of the timepiece module shown in FIG. 2; FIG. FIG. 7 is an enlarged rear view of a main part showing a train wheel state in the third sub-display area shown in FIG. 6; FIG. 5 is an enlarged front view showing a timepiece module in a second embodiment of a wristwatch to which the invention is applied; FIG. 10 is an enlarged rear view of a main part showing an example of a train wheel state in the third sub-display area shown in FIG. 8;

(First embodiment)
A first embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS. 1 to 7. FIG.
This wristwatch has a wristwatch case 1 as shown in FIG. A band attaching portion 2 is provided on each side portion of the wristwatch case 1 on the 12 o'clock side and the 6 o'clock side.

In addition, as shown in FIG. 1, a switch operating portion 3 such as a crown is provided on the 3 o'clock side of the wristwatch case 1 . Push button switches 4 are provided on the two o'clock side, the four o'clock side, the eight o'clock side, and the ten o'clock side of the wristwatch case 1, respectively. A watch module 5 is provided inside the watch case 1 .

As shown in FIGS. 1 and 2, the timepiece module 5 includes a substantially disc-shaped dial plate 6 arranged on the upper surface thereof, and a ring-shaped parting member arranged on the outer peripheral portion of the upper surface of the dial plate 6. 7 and . In this case, a plurality of hour characters 7a are provided on the upper surface of the parting member 7 at regular intervals along the circumferential direction.

1, 2 and 6, the clock module 5 includes a main display section 8 (main display area) for indicating the current time, a first sub-display section 9 for indicating the world time, It has a second sub-display section 10 for indicating the day of the week, and two types of third sub-display sections 11 and 12 for indicating the stopwatch function and remaining battery capacity.

As shown in FIGS. 1 and 2, the main display unit 8 indicates the current time. and a pointer shaft 14 provided in the center of the dial plate 6 so as to protrude upward and to which a pointer 13 is attached. As a result, the main display section 8 indicates the current time by moving the pointer 13 above the dial 6 as the pointer shaft 14 rotates and indicating the hour characters 7a of the parting member 7. It is configured.

The first sub-display section 9, as shown in FIGS. 1 and 2, indicates the time in any one of cities in the world. The first sub-display portion 9 includes a substantially circular first display area 9a provided between the central portion of the dial 6 and the outer circumference of the dial 6 on the 6 o'clock side, and a display area within the first display area 9a. and a first sub-hand 9b that moves above. Thus, the first sub-display section 9 is configured to indicate the time of the selected city by moving the first sub-hand 9b above the first display area 9a.

As shown in FIGS. 1 and 2, the second sub-display portion 10 indicates the day of the week, and is provided between the central portion of the dial 6 and the outer circumference of the dial 6 on the 12:00 side. It has a circular second display area 10a and a second sub-hand 10b that moves above the second display area 10a. As a result, the second sub-display section 10 is configured to selectively indicate the day of the week by moving the second sub-hand 10b above the second display area 10a.

Of the two types of third sub-displays 11 and 12, one of the third sub-displays 11 indicates the time of the stopwatch, as shown in FIGS. and the outer circumference of the dial 6 on the 9 o'clock side, a substantially fan-shaped third display area 11a, and a third sub-hand 15 that moves above the third display area 11a. there is As a result, the third sub-display section 11 is configured to indicate the time of the stopwatch by retrograde movement of the third sub-hand 15 back and forth above the third display area 11a every 1/20th of a second. .

Of the two types of third sub-displays 11 and 12, the other third sub-display 12 indicates the remaining battery level, as shown in FIG. and the outer circumference of the dial 6 on the 9 o'clock side; there is As a result, the other third sub-display section 12 is configured to indicate the remaining amount of the battery by moving the third sub-hand 15 above the third display area 12a.

In this case, as shown in FIGS. 3, 4 and 7, the two types of third sub-display portions 11 and 12 are provided with a step motor 16 and a train wheel portion 17, which are composed of a first support member 18 and a second display portion. 2 support member 19. The step motor 16 includes a coil portion 20, a stator 21 for guiding a magnetic field intermittently generated by the coil portion 20, and a stator hole 21a provided in the center of the stator 21. and a rotor 22 that rotates intermittently in response to the magnetic field generated.

As shown in FIGS. 3 and 4, the train wheel portion 17 includes a first intermediate wheel 23 that rotates as the rotor 22 of the step motor 16 rotates, and a first intermediate wheel 23 that rotates as the first intermediate wheel 23 rotates. A second intermediate wheel 24 and a secondary needle wheel 25 that rotates with the rotation of the second intermediate wheel 24 are provided. It is

That is, the first intermediate wheel 23 rotates while being meshed with the rotor pinion 22a of the rotor 22 of the step motor 16, as shown in FIGS. The second intermediate wheel 24 meshes with the first pinion 23a of the first intermediate wheel 23 and rotates. The sub needle wheel 25 rotates while meshing with the second pinion 24a of the second intermediate wheel 24. - 特許庁

The first and second support members 18 and 19 are, as shown in FIGS. They are provided corresponding to the third sub-display areas 11 a and 12 a of the sub-display portions 11 and 12 . The first support member 18 has a shaft mounting hole 26 for supporting the upper part of the rotor shaft of the rotor 22 , a shaft mounting hole 27 for supporting the upper part of the first shaft of the first intermediate wheel 23 , and a second intermediate wheel 24 . A shaft mounting hole 28 for supporting the upper portion of the second shaft and two kinds of first and second shaft mounting holes 29a and 29b for supporting the sub needle shaft 25a of the sub needle wheel 25 are provided.

In this case, the sub needle shaft 25a of the sub needle wheel 25 is selectively inserted into the two types of first and second shaft mounting holes 29a and 29b as shown in FIGS. and is provided in the first support member 18 so that the sub needle shaft 25a of the sub needle wheel 25 can be selectively mounted in either one of the first and second shaft mounting holes 29a and 29b. It is That is, these first and second shaft mounting holes 29a and 29b are provided on a circumference around the center of rotation of the second intermediate wheel 24 meshing with the auxiliary needle wheel 25, as shown in FIG.

As a result, as shown in FIG. 4, when the secondary needle shaft 25a is inserted into the first shaft mounting hole 29a, as shown in FIG. , 12, the sub-needle shaft 25a is arranged at a substantially fan-shaped corner of the third display area 11a of one of the third sub-display portions 11, that is, at a position close to the pointer shaft 14 of the main display portion 8, A third secondary needle 15 is attached to the secondary needle shaft 25a, and is configured to reciprocate above the third display area 11a.

Also, as shown in FIG. 7, when the secondary needle shaft 25a is inserted into the first shaft mounting hole 29b, as shown in FIG. , 12, the sub-needle shaft 25a is arranged at the substantially circular central portion of the third display area 12a of the other third sub-display portion 12, that is, at a position away from the pointer shaft 14 of the main display portion 8. The third sub-hand 15 is attached to the sub-hand shaft 25a, and the third sub-hand 15 is configured to move above the third display area 12a.

On the other hand, as shown in FIG. 3, the second support member 19 has a shaft mounting hole 30 for supporting the lower portion of the rotor shaft of the rotor 22 and a shaft mounting hole 30 for supporting the lower portion of the rotor shaft of the first intermediate wheel 23, as with the first support member 18. A shaft mounting hole 31 for supporting the lower portion, a shaft mounting hole 32 for supporting the lower portion of the second shaft of the second intermediate wheel 24, and two types of first, second and third shaft mounting holes 32 for supporting the lower portion of the secondary needle shaft 25a of the secondary needle wheel 25. Second shaft attachment holes 33a and 33b are provided.

In this case as well, the two types of first and second shaft mounting holes 33a and 33b are holes into which the sub needle shaft 25a of the sub needle wheel 25 is selectively inserted, as shown in FIGS. The secondary needle shaft 25a of the secondary needle wheel 25 is provided on the second support member 19 so as to be selectively attached to either one of the first and second shaft mounting holes 33a and 33b. Similar to the first and second shaft mounting holes 29a and 29b of the first support member 18, these first and second shaft mounting holes 33a and 33b are centered on the center of rotation of the second intermediate wheel 24 meshing with the auxiliary needle wheel 25. It is provided on the circumference of the circle.

Next, operation of such a wristwatch will be described.
With this wristwatch, either one of the two types of third sub-displays 11 and 12 can be selected. For example, when selecting one third sub-display section 11, first, with the first supporting member 18 turned upside down, as shown in FIG. A row portion 17 is arranged.

At this time, the upper portion of the rotor shaft of the rotor 22 of the step motor 16 is inserted into the shaft mounting hole 26 of the first support member 18 and supported. Also, the upper portion of the first shaft of the first intermediate wheel 23 of the train wheel portion 17 is inserted into the shaft mounting hole 27 of the first support member 18 and meshed with the rotor pinion 22 a of the rotor 22 . Also, the upper portion of the second shaft of the second intermediate wheel 24 of the gear train portion 17 is inserted into the shaft mounting hole 28 of the first support member 18 and meshed with the first pinion 23 a of the first intermediate wheel 23 .

In this state, the sub needle wheel 25 is arranged on the first support member 18 . At this time, the sub needle shaft 25 a of the sub needle wheel 25 is positioned in the first shaft mounting hole 29 a near the center of the dial 6 among the two types of first and second shaft mounting holes 29 a and 29 b of the first support member 18 . , and meshes with the second pinion 24 a of the second intermediate wheel 24 . As a result, the sub needle wheel 25 is arranged on the first support member 18 with the sub needle shaft 25 a protruding upward from the first support member 18 .

After that, the second support member 19 is arranged to correspond to the first support member 18 . At this time, the lower portion of the rotor shaft of the rotor 22 of the step motor 16 is inserted into the shaft mounting hole 30 of the second support member 19 and supported. Also, the lower portion of the first shaft of the first intermediate wheel 23 is inserted into the shaft mounting hole 31 of the second support member 19 and supported. Also, the lower portion of the second shaft of the second intermediate wheel 24 is inserted into the shaft mounting hole 32 of the second support member 19 and supported.

Further, the lower part of the sub needle shaft 25a of the sub needle wheel 25 is inserted into the first shaft mounting hole 29a of the first support member 18 out of the two types of first and second shaft mounting holes 33a and 33b of the second support member 19. It is inserted into the corresponding first shaft mounting hole 33a and supported. As a result, the step motor 16 and the wheel train portion 17 are assembled between the first support member 18 and the second support member 19 .

At this time, the sub-hand shaft 25a of the sub-hand wheel 25 is positioned at the center of the substantially sectoral shape in the third display area 11a of the third sub-display portion 11. As shown in FIG. In this state, the third secondary needle 15 is attached to the secondary needle shaft 25 a of the secondary needle wheel 25 projecting upward from the first support member 18 . As a result, as shown in FIGS. 1 and 2, the third sub-display portion 11 takes a display form in which the third sub-hand 15 moves above the substantially fan-shaped third sub-display area 11a.

On the other hand, when selecting, for example, another one of the third sub-display portions 11 and 12 shown in FIG. The step motor 16 , the first intermediate wheel 23 and the second intermediate wheel 24 are arranged on the first supporting member 18 as in the case of the third sub-display portion 11 .

Then, the sub needle shaft 25a of the sub needle wheel 25 is inserted into the second shaft mounting hole 29b farther from the center of the dial 6, out of the two types of first and second shaft mounting holes 29a and 29b of the second support member 18. It is inserted and engaged with the second pinion 24a of the second intermediate wheel 24.例文帳に追加As a result, the sub needle wheel 25 is arranged on the first support member 18 with the sub needle shaft 25 a protruding upward from the first support member 18 .

In this state, the second support member 19 is arranged corresponding to the first support member 18 to support the rotor 22, the first intermediate wheel 23 and the second intermediate wheel 24 of the step motor 16. As shown in FIG. At this time, the lower part of the sub needle shaft 25a of the sub needle wheel 25 is positioned at the second shaft mounting hole 29b of the first support member 18 out of the two types of first and second shaft mounting holes 33a and 33b of the second support member 19. is inserted into the second shaft mounting hole 33b corresponding to the .

As a result, the step motor 16 and the wheel train portion 17 are assembled between the first support member 18 and the second support member 19 . At this time, the sub-hand shaft 25a of the sub-hand wheel 25 is arranged at the substantially circular center of the third display area 12a of the other third sub-display portion 12. As shown in FIG. In this state, the third secondary needle 15 is attached to the secondary needle shaft 25 a of the secondary needle wheel 25 projecting upward from the first support member 18 . As a result, as shown in FIG. 6, the third sub-display portion 12 takes a display form in which the third sub-hand 15 moves above the substantially circular third sub-display area 12a.

Next, the case of using such a wristwatch will be described.
In the normal state, the pointer shaft 14 of the main display part 8 rotates to move the pointers 13 such as the second hand, the minute hand and the hour hand above the dial 6, and the pointers 13 are arranged on the outer periphery of the dial 6. By pointing the hour character 22a of the parting member 7, the current time can be known.

Also, at this time, the first sub-hand 9b of the first sub-display portion 9 moves above the first display area 9a to indicate the hour character (not shown) in the first display area 9a. You can know the time in any city in the world. Similarly, the second sub-display section 10 allows the user to know the day of the week by moving the second sub-hand 10b above the second display area 10a to indicate any day of the week in the second display area 10a. can be done.

Also, at this time, if one of the two types of third sub-displays 11 and 12, for example, one of the third sub-displays 11 is selected, the third sub-hand of this third sub-display 11 is displayed. The time of the stopwatch can be known by indicating the scale of the third display area 11a by retrograding the hand 15 reciprocating every 1/20th of a second above the sector-shaped third display area 11a.

On the other hand, if, for example, one of the two types of third sub-displays 11 and 12 is selected, the third sub-hand 15 of this third sub-display 12 is By moving the hands above the substantially circular third display area 12a and indicating the scale of the third display area 12a, the remaining amount of the battery can be known.

As described above, according to this wristwatch, the dial 6 is provided with two types of third sub-display areas 11a or 12a between the central portion and the outer peripheral portion on the 9 o'clock side, and the third sub-display area 11a , 12a, and a train wheel portion 17 having a sub hand wheel 25 to which a third sub hand 13 that moves hands above 12a is attached. , second support members 18 and 19, and first and second shaft mounting holes 29a for selectively mounting the sub needle wheels 25 to any of a plurality of locations provided on the first and second support members 18 and 19. , 29b, 33a, 33b, there is no need to replace the first and second support members 18, 19, and the installation position of the third sub needle 15 can be easily changed.

Specifically, in this wristwatch, first and second shaft mounting holes 29a and 29b are provided at a plurality of locations on the first support member 18, and first and second shaft mounting holes are provided at a plurality of locations on the second support member 19. Since the auxiliary needle wheel 25 of the gear train portion 17 can be selectively attached to either one of the holes 33a and 33b corresponding to each other, there is no need to replace the first and second support members 18 and 19, and the auxiliary needle wheel 25 can be replaced. The installation position of the sub-needle shaft 25a of the needle wheel 25 can be changed, so that the installation position of the third sub-needle 15 can be easily changed.

In this case, in this wristwatch, the gear train portion 17 is provided with first and second intermediate wheels 23 and 24 for transmitting the rotation of the step motor 16 to the auxiliary needle wheel 25. 29b, 33a, 33b are provided on the circumference around the center of rotation of the second intermediate wheel 24 meshing with the auxiliary needle wheel 25, so that the first shaft mounting holes 29a, 33a and the second shaft mounting hole 29b , 33b of the sub needle wheel 25, the sub needle wheel 25 can be reliably and favorably rotated by the second intermediate wheel 24. As shown in FIG.

Also, in this wristwatch, two types of third sub-displays 11 and 12 are provided on different dials 6, and each of the third sub-displays 11 and 12 has two different third sub-display areas 11a and 12a. , by moving the third sub-hand 15 in one of the two third sub-display areas 11a and 12a, it is possible to know, for example, the stopwatch time, and the other one. By moving the third sub-hand 15 within the third sub-display area 12a, it is possible to know, for example, the remaining amount of the battery.

In this case, the two types of third sub-display areas 11a and 12a are formed by first shaft mounting holes 29a and 33a to which the sub-pin wheel 25 is mounted and second shaft mounting holes 29b and 33b to which the sub-pin wheel 25 is mounted. By using different display modes, it is possible to easily select two different functions and display shapes corresponding to these two types of functions.

For example, when the sub-pin wheel 25 is attached to the first shaft mounting holes 29a and 33a, the third sub-display area 11a is formed in a substantially fan-like shape, and the sub-pin wheel 25 is attached to a key portion of the substantially fan-like shape. The time of the stopwatch can be indicated by the retrograde operation in which the secondary hand shaft 25a is arranged and the third secondary hand 15 is moved back and forth above the sector-shaped third secondary display area 11a every 1/20th of a second. .

Further, for example, when the sub-pin wheel 25 is attached to the second shaft mounting holes 29b and 33b, the third sub-display area 12a is formed in a substantially circular shape, and the sub-pin wheel 25 is positioned at the center of the substantially circular shape. By arranging the sub-hand shaft 25a, the third sub-hand 15 can be moved above the substantially circular third sub-display area 11a to indicate the remaining amount of the battery.

(Second embodiment)
Next, a second embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. 8 and 9. FIG. The same parts as those of the first embodiment shown in FIGS. 1 to 7 are denoted by the same reference numerals.
As shown in FIGS. 8 and 9, this wristwatch has the same structure as the first embodiment except that the third sub-hand 15 can be changed to three different installation positions.

That is, as shown in FIG. 9, the first support member 41 corresponding to the third sub-display portion 40 is configured such that the step motor 16 and the wheel train portion 17 are arranged thereon, as in the first embodiment. . In this case also, the train wheel portion 17 includes a first intermediate wheel 23 that rotates with the rotation of the rotor 22 of the step motor 16 and a second intermediate wheel 24 that rotates with the rotation of the first intermediate wheel 23. , and a secondary needle wheel 25 that rotates as the second intermediate wheel 24 rotates.

In this case, as shown in FIG. 9, the first support member 41 is provided with three types of first to third shaft mounting holes 42a to 42c. Thus, the sub needle wheel 25 is configured such that the sub needle shaft 25a can be selectively attached to any one of the first to third shaft attachment holes 42a to 42c. That is, these first to third shaft mounting holes 42a to 42c are arranged on a circumference around the center of rotation of the second intermediate wheel 24 meshing with the auxiliary needle wheel 25 (the circumference indicated by the dotted line in FIG. 9). is provided.

Further, the step motor 16 and the gear train portion 17 are configured to be sandwiched between the first support member 41 and the second support member (not shown) as in the first embodiment. ing. In this case, the second support member also has three types of first to third shaft mounting holes (Fig. not shown) are provided.

8, the sub needle shaft 25a of the sub needle wheel 25 can be selectively attached to any one of the first to third shaft attachment holes 42a to 42c. Accordingly, the sub-needle shaft 25a can be installed at three positions, so that three types of display modes, that is, three types of display functions and three types of display shapes can be obtained.

According to such a wristwatch, the first to third shaft mounting holes 42a to 42c are provided at a plurality of locations on the first support member 41, and the second shaft attachment holes 42a to 42c are provided at a plurality of locations on the second support member (not shown). Since the auxiliary needle wheel 25 of the gear train portion 17 can be selectively attached to one of the first to third shaft attachment holes (not shown) corresponding to each other, the first, The installation position of the sub needle shaft 25a of the sub needle wheel 25 can be changed to three positions without the need to replace the second support member 41, thereby easily changing the installation position of the third sub needle 15.例文帳に追加can be done.

In this case, in this wristwatch, the gear train portion 17 is provided with first and second intermediate wheels 23 and 24 for transmitting the rotation of the step motor 16 to the auxiliary needle wheel 25. 42c is provided on the circumference around the center of rotation of the second intermediate wheel 24 which meshes with the sub-pin wheel 25, so that the sub-pin wheel 25 can be attached to any one of the first to third shaft mounting holes 42a to 42c. Even when the secondary needle shaft 25a is attached, the secondary needle wheel 25 can be reliably and favorably rotated by the second intermediate wheel 24. - 特許庁

In addition, in this wristwatch, the sub-hand shaft 25a of the sub-hand wheel 25 is selectively attached to any one of the first to third shaft mounting holes 42a to 42c, so that the sub-hand shaft 25a can be installed at three positions. Therefore, the third sub-display section 40 can be easily changed into three types of display modes, that is, three types of display functions and three types of display shapes, depending on the installation position of the sub-needle shaft 25a. can.

In the above-described first and second embodiments, the case where the installation position of the sub-pin wheel 25 is changed to two or three places has been described, but the present invention is not limited to this, and the sub-pin wheel 25 By providing four or more shaft mounting holes on the circumference around the center of rotation of the meshing second intermediate wheel 24, the installation positions of the auxiliary needle wheels 25 may be changed to four or more.

Further, in the first and second embodiments described above, the case where the train wheel portion 17 includes the first intermediate wheel 23 and the second intermediate wheel 24 was described, but the present invention is not limited to this. A structure with only one intermediate wheel may be used, or a structure with three or more intermediate wheels may be used. Also in this case, it is sufficient that a plurality of shaft mounting holes are provided on the circumference around the center of rotation of the intermediate wheel that meshes with the auxiliary needle wheel 25 .

Further, in the above-described first and second embodiments, the case of applying to the third sub-hand 15 of the third sub-display portions 11, 12, 40 has been described, but the present invention is not limited to this, and for example the first The first sub-hand 9b of the sub-display 9 and the second sub-hand 10b of the second sub-display 10 can also be applied.

Furthermore, in the above-described first and second embodiments and their modifications, the case of application to a pointer-type wristwatch has been described, but the wristwatch does not necessarily have to be a wristwatch. can be applied to various pointer-type timepieces.

Although several embodiments of the present invention have been described above, the present invention is not limited to these, and includes the invention described in the claims and their equivalents.
The invention described in the claims of the present application will be additionally described below.

(Appendix)
The invention according to claim 1 is a wheel train portion having a dial provided with a display area between a central portion and a part of the outer periphery, and a pointer wheel to which a pointer that operates above the display area is attached. a support member that supports the train wheel at a location corresponding to the display area; and a plurality of shafts that are provided at a plurality of locations on the support member and to which the pointer wheels are selectively attached to any of the plurality of locations. and a mounting hole.

The invention according to claim 2 is the train wheel apparatus according to claim 1, wherein the train wheel portion includes one or more intermediate wheels for transmitting rotation of a motor to the pointer wheel, and the plurality of is provided on a circumference around the center of rotation of the intermediate wheel meshing with the pointer wheel.

The invention according to claim 3 is the gear train device according to claim 1 or claim 2, wherein a main display area is provided at the center of the dial plate, the display area is a sub display area, and the display area is a sub display area. The train wheel device is characterized in that the pointer is a sub-hand that moves within the sub-display area.

According to a fourth aspect of the invention, there is provided the gear train device according to the third aspect, wherein the display form of the secondary display area differs according to the plurality of shaft mounting holes to which the pointer wheel is mounted. It is a gear train.

According to a fifth aspect of the invention, there is provided a timepiece comprising the gear train device according to any one of the first to fourth aspects.

1 wristwatch case 5 clock module 6 dial 7 parting member 8 main display 9 first sub-display 10 second sub-display 11, 12 third sub-display 11a, 12a third sub-display area 15 third sub-hand 16 Step motor 17 train wheel 18 first support member 19 second support member 23 first intermediate wheel 24 second intermediate wheel 25 secondary needle wheel 25a secondary needle shaft 29a, 29b first and second shaft mounting holes 33a, 33b first , second shaft mounting hole 40 third sub display portion 41 first supporting member 42a to 42c first to third shaft mounting holes

The present invention relates to a gear train used in a timepiece such as a wristwatch, a timepiece provided with the same , a method for manufacturing the train wheel device, and a method for manufacturing a timepiece including the same .

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a train wheel device that can easily change the installation position of the hands without replacing the support member, a watch equipped with the train wheel device , a method for manufacturing the train wheel device, and the same. It is to provide a manufacturing method of a watch containing

The first aspect of the present invention is a dial having a display area, a pointer shaft to which a pointer that operates above the display region is attached, a wheel train portion including a pointer wheel attached to the pointer shaft , a support member for supporting the gear train portion at a location corresponding to the display area; and a plurality of shaft mounting holes provided at a plurality of locations on the support member and selectively mounting the pointer shaft at any of the plurality of locations. and wherein the display form displayed in the display area and the shape of the display area differ depending on which one of the plurality of shaft mounting holes the pointer shaft is attached to. be.
According to another aspect of the invention, there are provided a first step of arranging a train wheel on a support member, and a second step of arranging a pointer wheel with a pointer shaft protruding above the support member obtained in the first step. and a third step of attaching, after the second step, a pointer that operates above the display area to the pointer shaft in the gear train portion including the pointer wheel, wherein the second step comprises the supporting step. a step of selectively attaching the pointer shaft to any one of a plurality of shaft mounting holes formed in a member; This method of manufacturing a gear train device is characterized in that the gear train device is different depending on which of the shaft mounting holes it is mounted to.

Claims (5)

a dial having a display area between the central portion and a portion of the outer periphery;
a gear train portion including a pointer wheel to which a pointer that moves above the display area is attached;
a support member that supports the gear train portion at a location corresponding to the display area;
a plurality of shaft mounting holes provided at a plurality of locations of the support member, the pointer wheels being selectively mounted at any of the plurality of locations;
A wheel train device comprising: 2. The train wheel device according to claim 1, wherein the train wheel portion includes one or more intermediate wheels for transmitting rotation of a motor to the pointer wheel,
A wheel train device, wherein the plurality of shaft mounting holes are provided on a circumference around the center of rotation of the intermediate wheel meshing with the pointer wheel. 3. The train wheel apparatus according to claim 1, wherein a main display area is provided at the center of the dial plate, the display area is a sub-display area, and the hands are operated within the sub-display area. A gear train device characterized by being a sub-needle for 4. The train wheel apparatus according to claim 3, wherein the display form of the secondary display area differs according to the plurality of shaft mounting holes to which the pointer wheels are mounted. A timepiece comprising the gear train device according to any one of claims 1 to 4.

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