JP7033265B2 - Movement and watches - Google Patents

Description

The present invention relates to a movement used in an electronic device such as a wristwatch and a timepiece including the movement.

For example, as described in Patent Document 1, a wristwatch having a structure in which a motor built in a wristwatch case is provided with a magnetic resistant plate in order to prevent the influence of a magnetic field from the outside of the wristwatch case is known. There is.

Japanese Unexamined Patent Publication No. 2014-62846

However, such a wristwatch has a structure in which one surface of the motor is covered in parallel by a plurality of magnetically resistant plates, and the external magnetic fields that have entered the wristwatch case are only absorbed by the magnetically resistant plates. Is likely to become saturated, so magnetic resistance cannot be ensured.

An object to be solved by the present invention is to provide a movement capable of improving magnetic resistance and a timepiece equipped with the movement.

The present invention comprises a first plurality of anti-magnetic plates laminated at intervals in the thickness direction, a second plurality of anti-magnetic plates laminated at intervals in the thickness direction, and the first plurality of anti-magnetic plates. A plurality of motors arranged below the magnetic resistance plate and above the second magnetic resistance plate are provided, and each of the plurality of motors has at least the first magnetic resistance plate in a plan view. A movement characterized in that a part or all of the above is overlapped with any of the above, and at least a part or all of the second plurality of magnetically resistant plates is arranged so as to overlap with any of the above. be.

According to the present invention, it is possible to increase the volume of the entire plurality of anti-magnetic plates to prevent the anti-magnetic plates from becoming saturated, so that the anti-magnetic performance of the plurality of anti-magnetic plates can be improved.

It is an enlarged front view which showed one Embodiment of the wristwatch to which this invention was applied. It is an enlarged sectional view of the main part which showed the clock module of the wristwatch shown in FIG. It is an enlarged plan view which showed the correspondence state of a plurality of motors and a plurality of magnetic resistance plates in the timepiece module shown in FIG. It is an enlarged plan view which showed the correspondence state of a plurality of motors, and the 1st magnetic resistance plate in the timepiece module shown in FIG. In the clock module shown in FIG. 3, it is an enlarged plan view which showed the correspondence state of a plurality of motors and a 2nd magnetic resistance plate. It is an enlarged plan view which showed the correspondence state of a plurality of motors, and the 3rd magnetic resistance plate in the timepiece module shown in FIG. It is an enlarged plan view which showed the correspondence state of a plurality of motors, and the 4th magnetic resistance plate in the timepiece module shown in FIG. It is an enlarged back view which showed the main part in the timepiece module shown in FIG. 7.

Hereinafter, an embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. 1 to 8.
As shown in FIG. 1, this wristwatch includes a wristwatch case 1. Band attachment portions 2 are provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, respectively. Further, a switch unit 3 such as a crown is provided on the 3 o'clock side of the wristwatch case 1, and a push button switch 4 is provided on the 2 o'clock side, 4 o'clock side, and 8 o'clock side of the wristwatch case 1, respectively. Has been done.

As shown in FIGS. 1 and 2, a watch module 5 is provided inside the wristwatch case 1. The clock module 5 has a first clock movement 6 that indicates the time, a second clock movement 7 that indicates the world time, a third clock movement 8 that indicates the time of 24 hours, and a third clock movement that indicates the date, day, and mode. 4 It is equipped with various parts necessary for clock functions such as a clock movement 9 and an antenna 10.

That is, as shown in FIG. 2, the watch module 5 includes a middle frame 11 arranged in the wristwatch case 1. An upper housing 12 and a lower housing 13 are provided in the middle frame 11. A circuit board 14 is arranged between the upper housing 12 and the lower housing 13. Inside the upper housing 12 on the lower side, a plurality of motors 15 to 19 (see FIG. 3) of the first to fourth clock movements 6 to 9 and an antenna 10 are electrically connected to the circuit board 14. Have been placed.

Further, as shown in FIG. 2, a ring-shaped sun wheel 20 is rotatably arranged along the inner peripheral surface of the wristwatch case 1 on the outer peripheral portion of the upper portion of the upper housing 12. A sun wheel holding plate 21 that presses the inner peripheral portion of the sun wheel 20 in a rotatable state is arranged on the upper portion of the upper housing 12. As shown in FIG. 1, a dial 22 is arranged on the upper side of the date wheel 20 and the date wheel holding plate 21 via a solar panel (not shown).

As shown in FIG. 1, the dial 22 is formed in a substantially disk shape. On the outer peripheral portion of the dial 22, hour letters 22a of the first timepiece movement 6 are provided at equal intervals along the circumferential direction. The first sub-display unit 22b of the second watch movement 7 is provided on the 6 o'clock side of the dial 22, and the second sub-display of the third watch movement 8 is provided on the 12 o'clock side of the dial 22. A portion 22c is provided. Further, a third sub-display unit 22d of the fourth timepiece movement 9 is provided on the 9 o'clock side of the dial 22.

In this case, as shown in FIGS. 1 and 3, the first watch movement 6 includes a second hand motor 15 for driving the second hand 23, a minute hand motor 16 for driving the minute hand 24, and an hour hand motor 17 for driving the hour hand 25. It is equipped with. The second hand motor 15 is arranged at approximately 2 o'clock in the center of the upper housing 12, and is configured to rotate the second hand shaft (not shown) of the pointer shaft 26 to move the second hand 23 above the dial 22. ing.

As shown in FIGS. 1 and 3, the minute hand motor 16 is arranged at approximately 7 o'clock side of the central portion of the upper housing 12, and the minute hand shaft (not shown) of the pointer shaft 26 is rotated to rotate the minute hand 24 on the dial. It is configured to move the hand above 22. The hour hand motor 17 is arranged on the outer peripheral portion of the upper housing 12 on the approximately 11 o'clock side, and is configured to rotate the hour hand axis (not shown) of the pointer shaft 26 to move the hour hand 25 above the dial 22. ing.

In this case, the pointer shaft 26 comprises a second hand shaft, a minute hand shaft, and an hour hand shaft (none of which are shown), as shown in FIGS. 1 and 3, which are on the same axis at the center of the upper housing 12. It is rotatably arranged. That is, the hour hand shaft is formed in a cylindrical shape, and is rotatably attached to the inside of the hour hand shaft with the tubular minute hand shaft protruding upward. The minute hand shaft is rotatably attached to the inside of the minute hand shaft with the second hand shaft protruding upward.

As a result, as shown in FIGS. 1 and 3, the first watch movement 6 causes the second hand 23 attached to the upper end of the second hand shaft to be moved by the second hand motor 15, and the minute hand 24 attached to the upper end of the minute hand shaft. Is moved by the minute hand motor 16, the hour hand 25 attached to the upper end of the hour hand shaft is moved by the hour hand motor 17, and the second hand 23, the minute hand 24, and the hour hand 25 indicate the hour character 22a of the dial 22. It is configured to indicate the current time.

In this case, the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 are step motors, respectively, as shown in FIGS. 3 to 5, and the coil block 27a, the stator 27b, and the rotor 27c having one coil are provided. I have. As a result, each of these motors 15 to 17 intermittently generates a magnetic field in the coil block 27a, the generated magnetic field is guided to the stator 27b, and the rotor 27c is intermittently rotated by the guided magnetic field. The second hand 23, the minute hand 24, and the hour hand 25 are configured to move.

On the other hand, as shown in FIGS. 1 and 3, the second watch movement 7 includes a first sub-display motor 18 arranged on the outer peripheral portion of the upper housing 12 on the approximately 7 o'clock side. In the second clock movement 7, the first sub-display motor 18 causes the two first sub-hands 28a and 28b to move in the first sub-display unit 22b, and the time in any of the cities in the world is set. Is configured to indicate.

In this case, as shown in FIGS. 3 to 5, the first sub-display motor 18 is a step motor like the motors 15 to 17 with the first clock movement 6, and the coil block 27d provided with two coils. , Stator 27b, and rotor 27c. As a result, the first sub-display motor 18 intermittently generates a magnetic field in the coil block 27d provided with two coils, and the generated magnetic field is guided to the stator 27b, and the guided magnetic field causes the rotor 27c to be intermittently generated. It is configured to move the two first sub-needle 28a and 28b by rotating the needle.

Further, as shown in FIG. 1, the first sub-display unit 22b of the second watch movement 7 has a time display area in which one first sub-hand 28a moves to indicate a time, and another first sub-hand. The 28b has an am / afternoon display area for moving hands to indicate am / afternoon. As a result, in the second clock movement 7, one first sub-hand 28a indicates the time in the time display area of the first sub-display unit 22b, and the other first sub-hand 28b in the morning / afternoon display area. By pointing to the morning / afternoon, it is configured to indicate the time in any of the cities in the world.

Further, as shown in FIGS. 1 and 3, the third clock movement 8 is provided with the second auxiliary hand 30 by the hour hand motor 17 of the first clock movement 6 arranged on the outer peripheral portion of the upper housing 12 on the substantially 11 o'clock side. Is configured to move the hand in the second sub-display unit 22c to indicate the time of 24 hours. As a result, the third timepiece movement 8 is configured to indicate the time of 24 hours by rotating the second sub-hand 30 once in 24 hours in the second sub-display unit 22c.

Further, as shown in FIGS. 1 and 3, the fourth clock movement 9 has a date function, a day of the week function, and a mode function. The date function of the fourth clock movement 9 rotates the date wheel 20 by the third sub-display motor 19, and displays the date (not shown) of any of "1 to 31" displayed on the date wheel 20. It corresponds to the date window 22e of the plate 22 and is configured so that the selected date of the date wheel 20 can be seen through the date window 22e.

Further, as shown in FIGS. 1 and 3, the day of the week function of the fourth clock movement 9 causes the third sub-hand 31 to be moved in the third sub-display unit 22d by the third sub-display motor 19 to set the day of the week. It is configured to instruct. Further, the mode function of the fourth watch movement 9 causes the third sub-hand 31 to be moved in the third sub-display unit 22d by the third sub-display motor 19, and any of various modes such as a stopwatch and an alarm is set. It is configured to instruct.

By the way, as shown in FIGS. 2 and 3, the clock module 5 is arranged so that a part of the first magnetic resistance plate 32 and the second magnetic resistance plate 33 overlap on the upper side of the plurality of motors 15 to 19. The third magnetic resistant plate 34 and the fourth magnetic resistant plate 35 are arranged so as to overlap with each other on the lower side of the plurality of motors 15 to 19.

That is, as shown in FIGS. 2 and 3, these first to fourth anti-magnetic plates 32 to 35 are the first and second anti-magnetic plates 32, 33 and the third and third at positions avoiding the antenna 10. A plurality of motors 15 to 19 are arranged so as to be vertically sandwiched between the magnetic resistant plates 34 and 35 of 4. As a result, the first to fourth magnetic resistant plates 32 to 35 are configured so that the plurality of motors 15 to 19 are not affected by the magnetic field from the outside of the wristwatch case 1 without interfering with the transmission and reception of the antenna 10. ing.

In this case, as shown in FIG. 2, the first anti-magnetic plate 32 is arranged on the upper surface of the date wheel holding plate 21 arranged on the upper part of the upper housing 12. As a result, as shown in FIGS. 3 and 4, the first anti-magnetic plate 32 covers the entire upper side of the second hand motor 15 and the minute hand motor 16 and also covers a part of the upper side of the hour hand motor 17. Is located in.

As shown in FIG. 2, the second magnetic resistance plate 33 is arranged on the upper surface of the upper housing 12 and on the lower surface of the date wheel holding plate 21. As a result, the second anti-magnetic plate 33 is arranged so as to partially overlap the first anti-magnetic plate 32 at intervals. In addition, this interval is smaller than the width in which the first anti-magnetic plate 32 and the second anti-magnetic plate 33 overlap each other in a plan view. That is, as shown in FIGS. 3 and 5, the second anti-magnetic plate 33 is arranged so as to cover almost the entire upper side of the plurality of motors 15 to 19.

Further, as shown in FIGS. 3 and 4, the first magnetic resistance plate 32 is extended in each magnetic flux direction generated by the plurality of motors 15 and 16. As a result, the first magnetic resistance plate 32 prevents an external magnetic field from entering from the upper side in each magnetic flux direction of the plurality of motors 15 and 16, and prevents deterioration of each characteristic of the plurality of motors 15 and 16. It is formed.

Further, as shown in FIGS. 3 and 5, the second magnetic resistance plate 33 is extended in each magnetic flux direction generated by the plurality of motors 15 to 19. As a result, the second magnetic resistance plate 33 prevents an external magnetic field from entering from the upper side in each magnetic flux direction of the plurality of motors 15 to 19, and prevents deterioration of each characteristic of the plurality of motors 15 to 19. It is formed.

In this case, as shown in FIGS. 2 and 3, the first and second anti-magnetic plates 32 and 33 have a distance smaller than the width in which the first anti-magnetic plate 32 and the anti-magnetic plate 33 of the body 2 overlap each other. By being arranged so as to be spaced apart from each other, the volumes of the first and second anti-magnetic plates 32 and 33 as a whole are increased, and the anti-magnetic performance is improved. That is, if the first and second anti-magnetic plates 32 and 33 have the same plate thickness, the anti-magnetic performance can be improved by stacking a plurality of the first and second anti-magnetic plates 32 and 33. For example, the magnetic resistance performance is improved by stacking two magnetic resistance plates having a plate thickness of 0.5 mm rather than one magnetic resistance plate having a plate thickness of 1 mm.

On the other hand, as shown in FIG. 2, the third anti-magnetic plate 34 is arranged in the lower part of the lower housing 13. As shown in FIGS. 3 and 6, the third anti-magnetic plate 34 is arranged so as to cover each part or all of the lower side of all of the plurality of motors 15-19. The third anti-magnetic plate 34 is arranged so as to overlap a part or all of the first and second anti-magnetic plates 32, 33 with the plurality of motors 15 to 19 interposed therebetween.

Further, as shown in FIGS. 3 and 6, the third magnetic resistance plate 34 is extended in each magnetic flux direction generated by the plurality of motors 15 to 18. As a result, the third anti-magnetic plate 34 prevents an external magnetic field from entering from the lower side in each magnetic flux direction of the plurality of motors 15-18, and prevents deterioration of each characteristic of the plurality of motors 15-18. It is formed.

As shown in FIG. 2, the fourth anti-magnetic plate 35 is arranged at the bottom of the middle frame 11 located below the lower housing 13. As a result, the fourth anti-magnetic plate 35 is arranged so as to partially overlap with the third anti-magnetic plate 34 via the main plate 36 at intervals. In addition, this interval is smaller than the width in which the third magnetic resistance plate 34 and the fourth magnetic resistance plate 35 overlap each other in a plan view. That is, as shown in FIGS. 3 and 7, the fourth anti-magnetic plate 35 covers the entire lower side of the first sub-display motor 18, and the lower side of the minute hand motor 16 and the third sub-display motor 19. It is arranged so as to cover each part of.

Further, as shown in FIGS. 3 and 7, the fourth anti-magnetic plate 35 is extended in each magnetic flux direction generated by the plurality of motors 16 and 18. As a result, the fourth anti-magnetic plate 35 prevents an external magnetic field from entering from the lower side in each magnetic flux direction of the plurality of motors 16 and 18, so as to prevent deterioration of each characteristic of the plurality of motors 16 and 18. It is formed.

In this case, as shown in FIG. 8, the fourth anti-magnetic plate 35 is an extension portion in the magnetic flux direction (arrow direction shown in FIG. 8) generated in the coil block 27d provided with two coils in the first sub-display motor 18. 35a is extended and provided. The extension portion 35a of the fourth magnetically resistant plate 35 prevents an external magnetic field from entering from the lower side in the magnetic flux direction of the first sub-display motor 18 so as to prevent deterioration of the characteristics of the first sub-display motor 18. It is formed.

Further, as shown in FIGS. 2 and 3, the third and fourth magnetic resistant plates 34 and 35 have a distance smaller than the width in which the third magnetic resistant plate 34 and the fourth magnetic resistant plate 35 overlap each other. By being arranged apart from each other, the volume of the entire third and fourth magnetic resistance plates 34 and 35 is increased and the magnetic resistance performance is improved as in the case of the first and second magnetic resistance plates 32 and 33. ing.

Next, the operation of such a wristwatch will be described.
When using this wristwatch, the second hand 23, the minute hand 24, and the hour hand 25 of the first watch movement 6 move on the dial 22 to indicate the hour character 22a of the dial 22 to know the current time. Can be done. That is, at this time, the second hand motor 15 of the first watch movement 6 is driven, the second hand shaft of the pointer shaft 26 is rotated, and the second hand 23 is moved above the dial 22, so that the second hand 23 indicates the second time. ..

At this time, the minute hand motor 16 of the first clock movement 6 is driven, the minute hand shaft of the pointer shaft 26 is rotated, and the minute hand 24 is moved above the dial 22, so that the minute hand 24 indicates the minute time. .. Further, at this time, the hour hand motor 17 of the first clock movement 6 is driven, the hour hand axis of the pointer shaft 26 is rotated, and the hour hand 25 is moved above the dial 22, so that the hour hand 25 indicates the time of the hour. do.

In this way, the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 of the first watch movement 6 are driven, and the second hand 23, the minute hand 24, and the hour hand 25 move above the dial 22 to move the hour character 22a of the dial 22. Since the motors 15 to 17 are not affected by the external magnetic field due to the first to fourth magnetic resistant plates 32 to 35, the second hand 23, the minute hand 24, and the hour hand 25 are accurately and satisfactorily instructed. You can move the hands.

That is, the first and second magnetic resistant plates 32 and 33 are arranged so as to partially or completely cover the upper side of the second hand motor 15, the minute hand motor 16 and the hour hand motor 17 in a state where the first and second magnetic resistant plates 32 and 33 are partially overlapped with each other. Further, the first and second magnetic resistant plates 32 and 33 are arranged at intervals from each other via the date wheel holding plate 21. As a result, the total volume of the first and second magnetic resistance plates 32 and 33 increases.

Therefore, even if the first and second magnetic resistant plates 32 and 33 are thinly formed, the amount of absorption of the external magnetic field entering from the outside of the wristwatch case 1 increases, so that the first and second magnetic resistant plates 32 and 33 have the first and second magnetic resistance plates 32 and 33. The magnetic resistance plates 32 and 33 of the above are prevented from becoming saturated, and the magnetic resistance performance of the first and second magnetic resistance plates 32 and 33 is improved. As a result, since each of the motors 15 to 17 is not affected by the external magnetic field, the second hand 23, the minute hand 24, and the hour hand 25 can be moved accurately and satisfactorily.

In this case, among the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 of the first watch movement 6, almost all of the second hand motor 15 having the shortest drive cycle is formed by the first and second magnetic resistant plates 32 and 33. Since it is covered, the second hand motor 15 can be prevented from being affected by the external magnetic field by the first and second magnetic resistant plates 32 and 33, so that the second hand 23 can be accurately operated even if the drive cycle is short. And it is possible to move the hands well.

Further, since the first magnetic resistance plate 32 is extended in each magnetic flux direction generated in each coil block 27a of the plurality of motors 15 and 16, the external magnetic field is above in each magnetic flux direction of the plurality of motors 15 and 16. Since it is possible to prevent the motor from entering from the side, it is possible to prevent deterioration of each characteristic of the plurality of motors 15 and 16.

Further, the second magnetic resistance plate 33 is extended in each magnetic flux direction generated by the coil blocks 27a and 27d of the plurality of motors 15 to 19, so that the external magnetic field is formed in each magnetic flux direction of the plurality of motors 15 to 19. Can be prevented from entering from the upper side, so that deterioration of each characteristic of the plurality of motors 15 to 19 can be prevented.

Further, the third anti-magnetic plate 34 is arranged so as to partially or completely cover the lower side of the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 in a state where the third anti-magnetic plate 34 partially overlaps with the fourth anti-magnetic plate 35. There is. Therefore, the third and fourth magnetic resistant plates 34 and 35 also absorb the external magnetic field entering from the outside of the wristwatch case 1 so that the motors 15 to 17 are not affected by the external magnetic field. Can be done.

Further, the third magnetic resistance plate 34 is extended in each magnetic flux direction generated by the coil blocks 27a and 27d of the plurality of motors 15-18, so that the external magnetic field is formed in each magnetic flux direction of the plurality of motors 15-18. Can be prevented from entering from the lower side, so that deterioration of each characteristic of the plurality of motors 15 to 18 can be prevented.

Further, the fourth magnetic resistance plate 35 is extended in each magnetic flux direction generated by the coil blocks 27a and 27d of the plurality of motors 16 and 18, so that the external magnetic field is formed in each magnetic flux direction of the plurality of motors 16 and 18. Can be prevented from entering from the lower side, so that deterioration of each characteristic of the plurality of motors 16 and 18 can be prevented.

On the other hand, in the second watch movement 7, the first sub-display motor 18 causes the two first sub-hands 28a and 28b to move in the first sub-display unit 22b, so that any city in the world can be used. By specifying the time, you can know the time of any city in the world. That is, at this time, the first sub-display motor 18 of the second clock movement 7 is driven to move one first sub-hand 28a within the time display area of the first sub-display unit 22b to move the hands of the cities of the world. In addition to indicating the time, another first sub-hand 28b is moved within the morning / afternoon display area of the first sub-display unit 22b to indicate the morning / afternoon of a city in the world.

In this way, when the first sub-display motor 18 of the second clock movement 7 is driven and the two first sub-hands 28a and 28b move in the first sub-display unit 22b to indicate the time of a city in the world. Since the first sub-display motor 18 is not affected by the external magnetic field due to the first to fourth magnetic resistant plates 32 to 35, the two first sub-needle 28a and 28b are moved accurately and satisfactorily. be able to.

That is, the third and fourth magnetic resistant plates 34 and 35 are arranged on the lower side of the first sub-display motor 18 in a state where some of them are overlapped with each other so as to cover a part or the whole. Further, the third and fourth magnetic resistance plates 34 and 35 are arranged at intervals from each other via the main plate 36. As a result, the volumes of the third and fourth magnetic resistant plates 34 and 35 as a whole increase in the volume of the third and fourth magnetic resistant plates 34 and 35 as in the case of the first and second magnetic resistant plates 32 and 33.

Therefore, even if the thickness of each of the third and fourth magnetic resistant plates 34 and 35 is made thin, the amount of absorption of the external magnetic field entering from the outside of the wristwatch case 1 increases, and the third and fourth plates are third and fourth. It prevents the magnetic resistance plates 34 and 35 from becoming saturated, and the magnetic resistance performance of the third and fourth magnetic resistance plates 34 and 35 is improved. As a result, the first sub-display motor 18 is not affected by the external magnetic field, so that the two first sub-needle 28a and 28b can be moved accurately and satisfactorily.

In this case, the fourth anti-magnetic plate 35 is provided with an extension portion 35a extended in the magnetic flux direction (arrow direction shown in FIG. 8) generated in the coil block 27d provided with two coils in the first sub-display motor 18. ing. Therefore, the extension portion 35a of the fourth magnetically resistant plate 35 prevents an external magnetic field from entering from the lower side in the magnetic flux direction of the first sub-display motor 18, and deteriorates the characteristics of the first sub-display motor 18. Can be prevented.

Further, the second anti-magnetic plate 33 is arranged so as to cover the entire upper side of the first sub-display motor 18 in a state where the second anti-magnetic plate 33 partially overlaps with the first anti-magnetic plate 32. Therefore, the first and second magnetic resistant plates 32 and 33 absorb the external magnetic field entering from the external side of the wristwatch case 1 so that the first sub-display motor 18 is not affected by the external magnetic field. be able to.

Also in this case, since the second magnetic resistance plate 33 is extended in the magnetic flux direction generated by the coil block 27d of the first sub-display motor 18, the external magnetic field is above the magnetic flux direction of the first sub-display motor 18. By preventing entry from the side, it is possible to prevent deterioration of each characteristic of the plurality of motors 15 to 19.

Further, the third watch movement 8 can indicate the time of 24 hours by moving the second sub-hand 30 in the second sub-display unit 22c by the hour hand motor 17 of the first watch movement 6. That is, at this time, the hour hand motor 17 of the first watch movement 6 is driven to move the second sub-hand 30 in the second sub-display unit 22c so as to make one rotation in 24 hours, and the time of 24 hours is set. Instruct.

In this way, in the third clock movement 7, the hour hand motor 17 of the first clock movement 6 is driven, and the second sub hand 30 moves in the second sub display unit 22c to indicate the time displayed for 24 hours. In this case, as with the first watch movement 6, the hour hand motor 17 is not affected by the external magnetic field due to the first to fourth magnetically resistant plates 32 to 35, so that the second auxiliary hand 30 can be accurately and satisfactorily used. You can move the hands.

Further, the fourth clock movement 9 rotates the date wheel 20 by the third sub-display motor 19 and sets the date (not shown) of any of "1 to 31" displayed on the date wheel 20 on the dial 22. Corresponds to the date window 22e of the above, and the selected date of the date wheel 20 can be known through the date window 22e.

Further, the fourth watch movement 9 can know the day of the week by moving the third sub-hand 31 in the third sub-display unit 22d by the third sub-display motor 19 to indicate the day of the week. Further, in the fourth watch movement 9, the third sub-display motor 19 is used to move the third sub-hand 31 in the third sub-display unit 22d to indicate one of various modes such as a stopwatch and an alarm. Allows you to know the selected mode.

In this way, the third sub-display motor 19 of the fourth watch movement 9 is driven to rotate the date wheel 20 to display the date, and the third sub-hand 31 moves the hand on the third sub-display unit 22d to display the day of the week. Alternatively, when instructing the mode, the third sub-display motor 19 is not affected by the external magnetic field due to the first to fourth anti-magnetic plates 32 to 35, so that the date wheel 20 and the third sub-needle 31 are accurately set. It is possible to move the hands smoothly and well.

That is, the third and fourth magnetic resistant plates 34 and 35 are arranged on the lower side of the third sub-display motor 19 so as to cover a part or all of them in a state where the third and fourth magnetic resistant plates 34 and 35 are overlapped with each other. Further, the third and fourth magnetic resistance plates 34 and 35 are arranged at intervals from each other via the main plate 36. As a result, the volume of the third and fourth magnetic resistance plates 34 and 35 becomes large as a whole.

Therefore, even if the thickness of each of the third and fourth magnetic resistant plates 34 and 35 is made thin, the amount of absorption of the external magnetic field entering from the outside of the wristwatch case 1 increases, so that the third and fourth plates are third and fourth. The magnetic resistance plates 34 and 35 of the above are prevented from becoming saturated, and the magnetic resistance performance of the third and fourth magnetic resistance plates 34 and 35 is improved. As a result, since the third sub-display motor 19 is not affected by the external magnetic field, the date wheel 20 and the third sub-needle 31 can be moved accurately and satisfactorily.

Further, the second anti-magnetic plate 33 is arranged so as to partially overlap the first anti-magnetic plate 32 on the upper side of the third sub-display motor 19 so as to cover the entire portion. Therefore, the first and second magnetic resistant plates 32 and 33 also absorb the external magnetic field penetrating from the outside of the wristwatch case 1 so that the third sub-display motor 19 is not affected by the external magnetic field. be able to. As a result, the third sub-display motor 19 can be driven satisfactorily, the date wheel 20 can be reliably rotated to switch the date satisfactorily, and the third sub-hand 31 can be moved by the third sub-display unit 22d. Can give good indication of the day of the week or the mode.

As described above, according to this wristwatch, in a plan view, the first and second magnetic resistance plates 32, 33 or the third and third are in a state where a part of the first to fourth magnetic resistance plates 32 to 35 are overlapped with each other. By arranging the magnetic resistance plates 34, 35 of 4 so as to cover at least a part or all of one side of the plurality of motors 15 to 19 on the front and back sides, the first and second magnetic resistance plates 32, 33 as a whole or the first The volume of the entire third and fourth magnetic resistance plates 34 and 35 can be increased, whereby the first to fourth magnetic resistance plates 32 to 35 can be prevented from becoming saturated, and thus the first to fourth magnetic resistance plates 32 to 35 can be prevented from becoming saturated. The magnetic resistance performance of the magnetic resistance plates 32 to 35 of 4 can be improved.

That is, with the parts of the first and second magnetic resistance plates 32 and 33 overlapping, the first and second magnetic resistance plates 32 and 33 cover a part or all of the upper side of the plurality of motors 15 to 19. The volumes of the first and second magnetic resistance plates 32 and 33 can be increased, thereby preventing the first and second magnetic resistance plates 32 and 33 from becoming saturated. Therefore, the magnetic resistance performance of the first and second magnetic resistance plates 32 and 33 can be improved.

Further, with the third and fourth magnetic resistance plates 34 and 35 overlapping, the third and fourth magnetic resistance plates 34 and 35 cover a part or all of the lower side of the plurality of motors 1 to 19. It is possible to increase the volume of the entire third and fourth magnetic resistance plates 34 and 35, thereby preventing the third and fourth magnetic resistance plates 34 and 35 from becoming saturated. Therefore, the magnetic resistance performance of the third and fourth magnetic resistance plates 34 and 35 can be improved.

Further, in this wristwatch, the first to fourth magnetically resistant plates 32 to 35 are arranged at intervals in the vertical direction, which is the stacking direction thereof, so that the first to fourth magnetically resistant plates 32 to 35 are arranged. The total volume can be surely increased. Therefore, even if the thickness of each of the first to fourth magnetically resistant plates 32 to 35 is thinly formed, the amount of absorption of the external magnetic field can be increased, so that the first to fourth magnetically resistant plates 32 to 35 can be used. It is possible to prevent the saturation state, and thereby improve the magnetic resistance performance of the first to fourth magnetic resistance plates 32 to 35.

That is, since the first and second anti-magnetic plates 32 and 33 are arranged at intervals from each other via the date wheel holding plate 21, the volume of the entire first and second anti-magnetic plates 32 and 33 is sufficient. Can be made larger. Therefore, even if the thickness of each of the first and second magnetically resistant plates 32 and 33 is thinly formed, the amount of absorption of the external magnetic field can be increased, so that the first and second magnetically resistant plates 32 and 33 have the same thickness. It is possible to prevent the saturation state, and thereby improve the magnetic resistance performance of the first and second magnetic resistance plates 32 and 33, so that the plurality of motors 15 to 19 are not affected by the external magnetic field. Can be.

Further, since the third and fourth magnetic resistance plates 34 and 35 are arranged at intervals from each other via the main plate 36, the volume of the entire third and fourth magnetic resistance plates 34 and 35 is sufficiently increased. be able to. Therefore, even if the thickness of each of the third and fourth magnetic resistance plates 34 and 35 is thinly formed, the amount of absorption of the external magnetic field can be increased, so that the third and fourth magnetic resistance plates 34 and 35 can be used. It is possible to prevent the saturation state, and thereby improve the magnetic resistance performance of the third and fourth magnetic resistance plates 34 and 35, so that the plurality of motors 15 to 19 are not affected by the external magnetic field. Can be.

Further, in this wristwatch, since the second magnetic field resistant plate 33 is extended in each magnetic flux direction of the plurality of motors 15 to 19, an external magnetic field enters from the upper side in each magnetic flux direction of the plurality of motors 15 to 19. This can prevent the deterioration of each characteristic of the plurality of motors 15 to 19 reliably and satisfactorily.

In this case, among the plurality of motors 15 to 19, the fourth magnetic field resistant plate 35 is extended in the magnetic flux direction of the first sub-display motor 18, so that the external magnetic field is lower in the magnetic flux direction of the first sub-display motor 18. It is possible to prevent the motor from entering from the side, thereby reliably and satisfactorily preventing the characteristics of the first sub-display motor 18 from deteriorating.

That is, the fourth anti-magnetic plate 35 is provided with an extension portion 35a extended in the direction of the magnetic flux generated in the coil block 27d provided with the two coils in the first sub-display motor 18 (in the direction of the arrow shown in FIG. 8). As a result, the extension portion 35a of the fourth magnetic resistance plate 35 can reliably prevent an external magnetic field from entering from the lower side in the magnetic flux direction of the first sub-display motor 18, whereby the first sub-display can be prevented. It is possible to surely prevent the deterioration of the characteristics of the motor 18.

Further, in this watch, the motors on which the first to fourth magnetically resistant plates 32 to 35 overlap and cover are the second hand motor 15, the minute hand motor 16, and the hour hand motor 17, which indicate the time. The minute hand motor 16 and the hour hand motor 17 can be prevented from being affected by an external magnetic field by the first to fourth magnetically resistant plates 32 to 35, whereby the second hand motor 15, the minute hand motor 16 and the hour hand motor 17 can prevent the second hand 23. , The minute hand 24 and the hour hand 25 can be moved accurately and satisfactorily.

Further, in this wristwatch, the motor 15 over which the first to third magnetic resistance plates 32 to 34 overlap is the second hand motor 15 having the shortest drive cycle, so that the second hand motor 15 is the first to third. The magnetically resistant plates 32 to 34 can be prevented from being affected by an external magnetic field, whereby the second hand motor 15 can move the second hand 23 accurately and satisfactorily, and the second time can be accurately known.

Further, in this wristwatch, the first to fourth magnetic resistance plates 32 to 35 are arranged on both sides of the upper and lower portions on the front and back sides of the plurality of motors 15 to 19, so that the first to fourth magnetic resistance plates 32 to 35 are arranged on both sides. Since the magnetic resistance performance of the plates 32 to 35 can be further improved, the first to fourth magnetic resistance plates 32 to 35 make the plurality of motors 15 to 19 more reliably and satisfactorily affected by the external magnetic field. You can avoid receiving it.

That is, since the first and second magnetic resistant plates 32 and 33 are arranged on the upper side of the plurality of motors 15 to 19, the plurality of motors 15 to 19 are arranged by the first and second magnetic resistant plates 32 and 33. The magnetic resistance performance on the upper side of the motor can be improved, and the third and fourth magnetic resistance plates 34 and 35 are arranged on the lower side of the plurality of motors 15 to 19, so that the third and fourth magnetic resistance plates 34 and 4 are arranged. The magnetic resistance plates 34 and 35 of the above can improve the magnetic resistance performance of the lower side of the plurality of motors 15 to 19.

Therefore, since the magnetic resistance performance can be further improved by the first to fourth magnetic resistance plates 32 to 35, the first and second magnetic resistance plates 32, 33 or the third and fourth magnetic resistance plates can be further improved. Compared to the case where 34 and 35 are arranged only on one side of the upper and lower portions on the front and back sides of the plurality of motors 15 to 19, all of the plurality of motors 15 to 19 are further prevented from being affected by the external magnetic field. be able to.

In the above-described embodiment, the case where it is applied to a wristwatch has been described, but the present invention does not necessarily have to be a wristwatch, and may be applied to various clocks such as a travel watch, an alarm clock, a tabletop clock, and a wall clock. can. Further, the present invention is not necessarily limited to watches, but can be widely applied to electronic devices having a movement having a built-in motor.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and includes the invention described in the claims and the equivalent range thereof.
Hereinafter, the inventions described in the claims of the present application will be added.

(Additional note)
According to the first aspect of the present invention, in a plan view, a plurality of magnetically resistant plates are overlapped with each other, and the plurality of magnetically resistant plates cover at least a part or all of one side of the plurality of motors on the front and back sides. It is a movement characterized by being arranged.

The invention according to claim 2 is the movement according to claim 1, wherein the plurality of anti-magnetic plates are arranged at intervals in the stacking direction of the anti-magnetic plates.

The invention according to claim 3 is the movement according to claim 1 or 2, wherein the magnetic resistance plate is extended in the magnetic flux direction of a part or all of the plurality of motors. be.

According to a fourth aspect of the present invention, in the movement according to any one of the first to the third aspects, the motor in which the plurality of magnetically resistant plates are overlapped and covered is a motor for indicating a time. It is a characteristic movement.

According to a fifth aspect of the present invention, in the movement according to any one of the first to the fourth aspects, the motor in which the plurality of magnetically resistant plates are overlapped and covered is the motor having the shortest drive cycle. It is a characteristic movement.

The invention according to claim 6 states that in the movement according to any one of claims 1 to 5, the plurality of magnetic resistance plates are arranged on both sides of the plurality of motors on the front and back sides. It is a characteristic movement.

The invention according to claim 7 is a timepiece including the movement according to any one of claims 1 to 6.

1 Watch case 5 Watch module 6-9 1st-4th clock movement 15-second hand motor 16-minute hand motor 17-hour hand motor 18 1st sub-display motor 19 3rd sub-display motor 20-day wheel 21-day wheel presser plate 22 dial 22a Hour character 22b 1st sub-display unit 22c 2nd sub-display unit 22d 3rd sub-display unit 32 to 35 1st to 4th magnetic resistant plates 35a Extension

Claims (9)

A first plurality of anti-magnetic plates laminated at intervals in the thickness direction, and
A second plurality of magnetically resistant plates laminated at intervals in the thickness direction, and
A plurality of motors arranged below the first plurality of magnetic resistance plates and above the second plurality of magnetic resistance plates .
Equipped with
Each of the plurality of motors partially or completely overlaps with at least one of the first plurality of magnetic resistance plates in a plan view, and at least one of the second plurality of magnetic resistance plates in a plan view. A movement characterized by the fact that parts or all are arranged so as to overlap . The movement according to claim 1, wherein the second plurality of magnetically resistant plates are arranged at intervals from each other via a main plate. In the movement according to claim 1 or 2, the first plurality of magnetic flux resistant plates and the second plurality of magnetic resistance plates are extended in a part or all magnetic flux directions of the plurality of motors. The characteristic movement. The movement according to any one of claims 1 to 3, wherein the motor on which the first plurality of magnetically resistant plates are overlapped and covered is a motor for indicating a time. The movement according to any one of claims 1 to 4, wherein the motor in which the first plurality of magnetically resistant plates are overlapped and covered is the motor having the shortest drive cycle. The movement according to claim 5 is characterized in that at least one of the second plurality of magnetic resistance plates arranged on the back surface side in a plan view is arranged without covering all of the at least one of the motors. Movement to be. The movement according to any one of claims 1 to 6, wherein the first plurality of magnetic resistance plates and the second plurality of magnetic resistance plates have different shapes from each other. The movement according to any one of claims 1 to 7, wherein the plurality of motors do not overlap each other. A timepiece comprising the movement according to any one of claims 1 to 8.

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