JP2019039886A - Movement and timepiece - Google Patents

Abstract

To provide a movement capable of improving antimagnetic performance, and a timepiece including the movement.SOLUTION: In a plan view, in a state where first-fourth antimagnetic plates 32-35 are partially overlapped, the first and second antimagnetic plates 32, 33 or the third and fourth antimagnetic plates 34, 35 are arranged so as to cover a part or the whole of at least one side of front and rear surface sides of a plurality of motors 15-19. Accordingly, the whole volume of the first and second antimagnetic plates 32, 33, the third and fourth antimagnetic plates 34, 35, or the first-fourth antimagnetic plates 32-35 can be increased. Consequently, the first-fourth antimagnetic plates 32-35 can be prevented from becoming a saturated state, so that antimagnetic performance of the first-fourth antimagnetic plates 32-35 can be improved.SELECTED DRAWING: Figure 3

Description

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

  For example, as described in Patent Document 1, a wristwatch has 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. Yes.

JP 2014-62846 A

  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 each of the external magnetic fields entering the watch case is only absorbed by the magnetically resistant plates. Since it is likely to become saturated, the magnetic resistance cannot be secured.

  The problem to be solved by the present invention is to provide a movement capable of improving the magnetic resistance and a timepiece including the movement.

  In the present invention, in a plan view, in a state in which a part of the plurality of magnetic resistant plates are overlapped, the plurality of magnetic resistant plates are arranged to cover at least a part or all of one side of at least the front and back sides of the plurality of motors. It is a movement characterized by.

  According to this invention, the volume of the plurality of magnetically resistant plates can be increased to prevent the magnetically resistant plates from becoming saturated, and therefore the magnetic resistance performance of the magnetically resistant plates can be improved.

1 is an enlarged front view showing an embodiment of a wristwatch to which the present invention is applied. It is an expanded sectional view of the principal part which showed the timepiece module of the wristwatch shown in FIG. FIG. 3 is an enlarged plan view showing a correspondence state between a plurality of motors and a plurality of magnetically resistant plates in the timepiece module shown in FIG. 2. FIG. 4 is an enlarged plan view showing a correspondence state between a plurality of motors and a first magnetically resistant plate in the timepiece module shown in FIG. 3. FIG. 4 is an enlarged plan view showing a correspondence state between a plurality of motors and a second magnetically resistant plate in the timepiece module shown in FIG. 3. FIG. 4 is an enlarged plan view showing a correspondence state between a plurality of motors and a third magnetically resistant plate in the timepiece module shown in FIG. 3. FIG. 4 is an enlarged plan view showing a correspondence state between a plurality of motors and a fourth anti-magnetic plate in the timepiece module shown in FIG. 3. FIG. 8 is an enlarged back view showing a main part of the timepiece module shown in FIG. 7.

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

  A watch module 5 is provided inside the watch case 1 as shown in FIGS. The clock module 5 includes a first clock movement 6 that indicates time, a second clock movement 7 that indicates world time, a third clock movement 8 that indicates time of 24 hours, and a date, day of the week, and mode. Various parts necessary for the timepiece function such as the 4-timepiece movement 9 and the antenna 10 are provided.

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

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

  As shown in FIG. 1, the dial 22 is formed in a substantially disc shape. On the outer peripheral portion of the dial 22, the time letters 22 a of the first timepiece movement 6 are provided at equal intervals along the circumferential direction. At the 6 o'clock side of the dial 22 is provided a first sub display portion 22b of the second timepiece movement 7, and at the 12 o'clock side of the dial 22 the second sub display of the third timepiece movement 8 is provided. A portion 22c is provided. Further, a third sub-display portion 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 timepiece movement 6 includes a second hand motor 15 that drives the second hand 23, a minute hand motor 16 that drives the minute hand 24, an hour hand motor 17 that drives the hour hand 25, It has. The second hand motor 15 is arranged at approximately 2 o'clock side of the center portion 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 disposed at approximately 7 o'clock side of the center portion of the upper housing 12, and rotates the minute hand shaft (not shown) of the pointer shaft 26 to move the minute hand 24 to the dial. It is comprised so that a hand may be moved above 22. The hour hand motor 17 is disposed 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 shaft (not shown) of the pointer shaft 26 to move the hour hand 25 above the dial 22. ing.

  In this case, as shown in FIGS. 1 and 3, the pointer shaft 26 includes a second hand shaft, a minute hand shaft, and an hour hand shaft (all not shown), which are on the same axis at the center of the upper housing 12. It is arranged so that it can rotate. That is, the hour hand shaft is formed in a cylindrical shape, and is mounted rotatably in a state in which the cylindrical minute hand shaft protrudes upward. The minute hand shaft is rotatably mounted in the state in which the second hand shaft protrudes upward.

  Accordingly, as shown in FIGS. 1 and 3, the first timepiece movement 6 moves the second hand 23 attached to the upper end portion of the second hand shaft by the second hand motor 15 and moves the minute hand 24 attached to the upper end portion of the minute hand shaft. The hour hand 25 is moved by the minute hand motor 16, the hour hand 25 attached to the upper end portion 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 plate 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, as shown in FIGS. 3 to 5, and each includes a coil block 27a, a stator 27b, and a rotor 27c having one coil. I have. Thereby, each of these motors 15 to 17 generates a magnetic field intermittently in the coil block 27a, the generated magnetic field is guided to the stator 27b, and the rotor 27c rotates intermittently by the guided magnetic field. Thus, 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 timepiece movement 7 includes a first sub-display motor 18 disposed on the outer peripheral portion of the upper housing 12 on the approximately 7 o'clock side. The second timepiece movement 7 has the first sub-display motor 18 to move the two first sub-hands 28a and 28b in the first sub-display portion 22b, and the time of any one of the cities in the world. Is configured to direct.

  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 timepiece movement 6, and a coil block 27 d having two coils. , A stator 27b, and a rotor 27c. As a result, the first sub-display motor 18 intermittently generates a magnetic field by the coil block 27d having two coils, the generated magnetic field is guided to the stator 27b, and the rotor 27c is intermittently generated by the guided magnetic field. The first sub-needle 28a, 28b is moved by rotating in an automatic manner.

  Further, as shown in FIG. 1, the first sub-display portion 22b of the second timepiece movement 7 includes a time display area in which one first sub-hand 28a moves to indicate the time, and another first sub-hand. 28b has an am / pm display area in which am / pm is indicated by moving the hand. Thus, in the second timepiece movement 7, one first sub hand 28a indicates the time within the time display area of the first sub display portion 22b, and the other first sub hand 28b moves within the am / pm display area. By instructing the morning / afternoon, the time of any one of the cities in the world is indicated.

  Further, as shown in FIGS. 1 and 3, the third timepiece movement 8 is provided with the second sub-hand 30 by the hour hand motor 17 of the first timepiece movement 6 disposed on the outer peripheral portion of the upper housing 12 on the approximately 11 o'clock side. Is moved in the second sub display unit 22c to indicate a time of 24 hours. Thereby, this 3rd timepiece movement 8 is comprised so that the time of 24 hours may be instruct | indicated when the 2nd sub hand 30 makes one rotation in 24 hours within the 2nd sub display part 22c.

  Further, as shown in FIGS. 1 and 3, the fourth timepiece movement 9 has a date function, a day-of-the-week function, and a mode function. The date function of the fourth timepiece movement 9 is that the date indicator 20 is rotated by the third sub-display motor 19 and any date (not shown) of “1 to 31” displayed on the date indicator 20 is written. Corresponding to the date window 22e of the plate 22, the selected date of the date indicator 20 can be seen through the date window 22e.

  In addition, as shown in FIGS. 1 and 3, the day of the week function of the fourth timepiece movement 9 is to move the third auxiliary hand 31 in the third auxiliary display portion 22d by the third auxiliary display motor 19 to set the day of the week. Configured to direct. Furthermore, the mode function of the fourth timepiece movement 9 is to move the third sub-hand 31 within the third sub-display portion 22d by the third sub-display motor 19, and to select one of various modes such as a stopwatch and an alarm. Configured to direct.

  By the way, as shown in FIGS. 2 and 3, the timepiece module 5 is arranged so that a part of the first magnetic resistant plate 32 and the second magnetic resistant plate 33 overlap with the upper side of the plurality of motors 15 to 19. In addition, the third and fourth anti-magnetic plates 34 and 35 are disposed so as to partially overlap the lower sides of the plurality of motors 15 to 19.

  That is, as shown in FIGS. 2 and 3, the first to fourth anti-magnetic plates 32 to 35 are located at positions away from the antenna 10, and the first and second anti-magnetic plates 32 and 33 and the third and It arrange | positions so that the some motors 15-19 may be pinched | interposed by the 4 magnetic-resistant plates 34 and 35 up and down. Thereby, these 1st-4th magnetic-resistant plates 32-35 are comprised so that the several motors 15-19 may not be influenced by the magnetic field from the outside of the wristwatch case 1, without disturbing transmission / reception of the antenna 10. ing.

  In this case, as shown in FIG. 2, the first anti-magnetic plate 32 is disposed on the upper surface of the date indicator pressing plate 21 disposed on the upper portion of the upper housing 12. Thereby, 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 covers a part of the upper side of the hour hand motor 17. Is arranged.

  As shown in FIG. 2, the second antimagnetic plate 33 is disposed on the lower surface of the date indicator pressing plate 21 at the upper portion of the upper housing 12. As a result, the second anti-magnetic plate 33 is disposed so as to partially overlap the first anti-magnetic plate 32 with an interval. In addition, this space | interval is smaller than the width | variety with which the 1st antimagnetic board 32 and the 2nd antimagnetic board 33 have overlapped by planar view. That is, as shown in FIGS. 3 and 5, the second anti-magnetic plate 33 is disposed 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 anti-magnetic plate 32 is extended in the direction of each magnetic flux generated by the plurality of motors 15 and 16. As a result, the first anti-magnetic plate 32 prevents the external magnetic field from entering from the upper side in the respective magnetic flux directions of the plurality of motors 15 and 16, and prevents deterioration of the characteristics of the plurality of motors 15 and 16. Is formed.

  Further, as shown in FIGS. 3 and 5, the second antimagnetic plate 33 extends in the direction of each magnetic flux generated by the plurality of motors 15 to 19. Thereby, the 2nd magnetic-resistant board 33 prevents that an external magnetic field approachs from the upper part side in each magnetic flux direction of the several motors 15-19, and prevents the fall of each characteristic of the several motors 15-19. Is formed.

  In this case, as shown in FIGS. 2 and 3, the first and second anti-magnetic plates 32 and 33 are spaced apart from each other by a width smaller than the width at which the first anti-magnetic plate 32 and the anti-magnetic plate 33 of the body 2 overlap each other. By being arranged apart from each other, the entire volume of the first and second anti-magnetic plates 32 and 33 is increased, and the anti-magnetic performance is improved. In other words, if the first and second anti-magnetic plates 32 and 33 have the same thickness, the anti-magnetic performance is improved when a plurality of the anti-magnetic plates 32 and 33 are stacked. For example, the anti-magnetic performance is improved by stacking two anti-magnetic plates having a thickness of 0.5 mm rather than a single anti-magnetic plate having a thickness of 1 mm.

  On the other hand, as shown in FIG. 2, the third anti-magnetic plate 34 is disposed at the lower part of the lower housing 13. As shown in FIGS. 3 and 6, the third anti-magnetic plate 34 is disposed so as to cover a part or all of the lower side of all the motors 15 to 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 and 33 with the plurality of motors 15 to 19 being interposed therebetween.

  Further, as shown in FIGS. 3 and 6, the third anti-magnetic plate 34 extends in the direction of each magnetic flux generated by the plurality of motors 15 to 18. Thereby, the 3rd magnetic-resistant board 34 prevents that an external magnetic field approachs from the lower part side in each magnetic flux direction of the several motors 15-18, and prevents the fall of each characteristic of the several motors 15-18. Is formed.

  As shown in FIG. 2, the fourth anti-magnetic plate 35 is disposed at the bottom of the middle frame 11 located on the lower side of the lower housing 13. As a result, the fourth anti-magnetic plate 35 is disposed so as to partially overlap the third anti-magnetic plate 34 with a space therebetween via the ground plate 36. In addition, this space | interval is smaller than the width | variety with which the 3rd magnetic-resistant board 34 and the 4th magnetic-resistant board 35 have overlapped by planar 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 arrange | positions so that each part of may be covered.

  Further, as shown in FIGS. 3 and 7, the fourth anti-magnetic plate 35 extends in the direction of each magnetic flux generated by the plurality of motors 16 and 18. As a result, the fourth anti-magnetic plate 35 prevents the external magnetic field from entering from the lower side in the respective magnetic flux directions of the plurality of motors 16, 18, and prevents deterioration of the characteristics of the plurality of motors 16, 18. Is formed.

  In this case, as shown in FIG. 8, the fourth anti-magnetic plate 35 extends in the direction of the magnetic flux generated by the coil block 27d having two coils in the first sub display motor 18 (the arrow direction shown in FIG. 8). 35a is extended and provided. The extension portion 35a of the fourth anti-magnetic 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 prevents deterioration of the characteristics of the first sub-display motor 18. Is formed.

  Further, as shown in FIGS. 2 and 3, the third and fourth anti-magnetic plates 34 and 35 have an interval smaller than the width at which the third anti-magnetic plate 34 and the fourth anti-magnetic plate 35 overlap each other. By being arranged apart from each other, like the first and second anti-magnetic plates 32 and 33, the entire volume of the third and fourth anti-magnetic plates 34 and 35 is increased and the anti-magnetic performance is improved. 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 time 22a of the dial 22 to know the current time. Can do. That is, at this time, the second hand motor 15 of the first timepiece movement 6 is driven, and the second hand shaft of the pointer shaft 26 rotates to move the second hand 23 above the dial plate 22 so that the second hand 23 indicates the second time. .

  At this time, the minute hand motor 16 of the first timepiece movement 6 is driven, and the minute hand shaft of the pointer shaft 26 rotates to move the minute hand 24 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 timepiece movement 6 is driven, and the hour hand shaft of the pointer shaft 26 is rotated to move the hour hand 25 above the dial 22 so that the hour hand 25 indicates the time of time. To do.

  Thus, the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 of the first timepiece movement 6 are driven so that the second hand 23, the minute hand 24, and the hour hand 25 move above the dial 22 and the hour character 22a of the dial 22 is obtained. When the instruction is made, the motors 15 to 17 are not affected by the external magnetic field by the first to fourth anti-magnetic plates 32 to 35. It can be moved.

  That is, the first and second magnetic-resistant plates 32 and 33 are arranged on the upper side of the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 so as to cover a part or all of the first and second magnetically resistant plates 32 and 33. In addition, the first and second magnetic-resistant plates 32 and 33 are arranged with a space therebetween via the date wheel pressing plate 21. As a result, the entire volume of the first and second magnetic resistant plates 32 and 33 is increased.

  For this reason, even if the first and second anti-magnetic plates 32 and 33 are formed thin, the first and second anti-magnetic plates 32 and 33 increase in the amount of absorption of an external magnetic field entering from the outside of the watch case 1. The magnetic resistance plates 32 and 33 are prevented from becoming saturated, and the magnetic resistance performance by the first and second magnetic resistance plates 32 and 33 is improved. Thereby, since each motor 15-17 does not receive the influence of an 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 timepiece movement 6, the second hand motor 15 having the shortest drive cycle is almost entirely constituted by the first and second magnetically resistant plates 32 and 33. Since 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, the second hand 23 can be accurately moved even if the drive cycle is short. And it can be operated well.

  Further, the first magnetic-resistant plate 32 is extended in the direction of each magnetic flux generated in each coil block 27a of the plurality of motors 15 and 16, so that the external magnetic field is upward in the direction of each magnetic flux of the plurality of motors 15 and 16. Since it can prevent entering from the side, the fall of each characteristic of the some motors 15 and 16 can be prevented.

  Moreover, the 2nd magnetic-resistant board 33 is extended in each magnetic flux direction which generate | occur | produces in each coil block 27a, 27d of the several motors 15-19, and thereby an external magnetic field is used in each magnetic flux direction of the several motors 15-19. Can be prevented from entering from the upper side, so that the characteristics of the motors 15 to 19 can be prevented from deteriorating.

  The third antimagnetic plate 34 is disposed so as to partially or entirely 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 antimagnetic plate 35 partially overlaps the fourth antimagnetic plate 35. Yes. For this reason, the third and fourth magnetic resistant plates 34 and 35 also absorb the external magnetic field entering from the outside of the watch case 1 so that the motors 15 to 17 are not affected by the external magnetic field. Can do.

  Moreover, the 3rd magnetic-resistant board 34 is extended in each magnetic flux direction which generate | occur | produces in each coil block 27a, 27d of the several motors 15-18, and thereby an external magnetic field is used in each magnetic flux direction of the several motors 15-18. Can be prevented from entering from the lower side, so that deterioration of the characteristics of the plurality of motors 15 to 18 can be prevented.

  In addition, the fourth anti-magnetic plate 35 is extended in the direction of each magnetic flux generated in each of the coil blocks 27a and 27d of the plurality of motors 16 and 18, so that an external magnetic field is provided 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 the characteristics of the plurality of motors 16 and 18 can be prevented.

  On the other hand, the second watch movement 7 moves the two first sub-hands 28a and 28b in the first sub-display portion 22b by the first sub-display motor 18 so that any one of the cities in the world can move. By indicating the time, it is possible to know the time in any city in the world. That is, at this time, the first sub-display motor 18 of the second timepiece movement 7 is driven to move one first sub-hand 28a within the time display area of the first sub-display portion 22b, and In addition to instructing the time, the other first sub-hand 28b is moved within the AM / PM display area of the first sub-display portion 22b to instruct AM / PM of the world's cities.

  As described above, when the first sub-display motor 18 of the second watch movement 7 is driven and the two first sub-hands 28a and 28b move in the first sub-display portion 22b to indicate the time of cities in the world. In this case, the first sub-display motor 18 is not affected by the external magnetic field by the first to fourth magnetic-resistant plates 32 to 35, so that the two first sub-hands 28a and 28b are moved accurately and satisfactorily. be able to.

  That is, the third and fourth anti-magnetic plates 34 and 35 are arranged so as to partially or entirely cover the lower side of the first sub-display motor 18 in a state where the third and fourth anti-magnetic plates 34 and 35 are partially overlapped. In addition, the third and fourth anti-magnetic plates 34 and 35 are arranged with a space therebetween via a ground plate 36. As a result, the third and fourth anti-magnetic plates 34 and 35 have the same volume as the first and second anti-magnetic plates 32 and 33, and the entire volume of the third and fourth anti-magnetic plates 34 and 35 is increased.

  For this reason, even if these third and fourth anti-magnetic plates 34 and 35 are formed thin, the amount of absorption of the external magnetic field entering from the outside of the watch case 1 increases, and the third and fourth anti-magnetic plates 34 and 35 increase. The magnetic resistant plates 34 and 35 are prevented from being saturated, and the magnetic resistance performance by the third and fourth magnetic resistant 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 hands 28a and 28b can be moved accurately and satisfactorily.

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

  The second anti-magnetic plate 33 is disposed 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 the first anti-magnetic plate 32. For this reason, the first and second anti-magnetic plates 32 and 33 absorb the external magnetic field entering from the outside of the watch 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, the second magnetically resistant plate 33 is extended in the direction of the magnetic flux generated in the coil block 27d of the first secondary display motor 18, so that the external magnetic field is upward in the direction of the magnetic flux of the first secondary display motor 18. By preventing entry from the side, it is possible to prevent deterioration of the characteristics of the plurality of motors 15 to 19.

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

  As described above, in the third timepiece movement 7, the hour hand motor 17 of the first timepiece movement 6 is driven, and the second sub-hand 30 moves in the second sub-display portion 22c to indicate the 24-hour display time. At this time, like the first timepiece movement 6, the hour hand motor 17 is not affected by the external magnetic field by the first to fourth magnetic-resistant plates 32-35, so that the second auxiliary hand 30 is accurately and satisfactorily improved. It can be moved.

  Further, the fourth timepiece movement 9 rotates the date indicator 20 by the third sub display motor 19, and any date (not shown) of “1 to 31” displayed on the date indicator 20 is displayed on the dial 22. It is possible to know the selected date of the date indicator 20 through the date window 22e.

  Further, the fourth timepiece movement 9 can know the day of the week by instructing the day of the week by moving the third sub-hand 31 within the third sub-display portion 22d by the third sub-display motor 19. Further, the fourth timepiece movement 9 causes the third sub-display motor 19 to move the third sub-hand 31 within the third sub-display portion 22d to instruct one of various modes such as a stopwatch and an alarm. Thus, the selected mode can be known.

  In this way, the third sub-display motor 19 of the fourth watch movement 9 is driven to rotate the date indicator 20 to display the date, and the third sub-hand 31 moves the hand on the third sub-display portion 22d, so that the day of the week is displayed. Alternatively, when the mode is instructed, the third auxiliary display motor 19 is not affected by the external magnetic field by the first to fourth magnetic-resistant plates 32 to 35. In addition, the needle can be moved well.

  That is, the third and fourth anti-magnetic plates 34 and 35 are disposed so as to partially or entirely cover the lower side of the third sub display motor 19 in a state where the third and fourth anti-magnetic plates 34 and 35 are partially overlapped. In addition, the third and fourth anti-magnetic plates 34 and 35 are arranged with a space therebetween via a ground plate 36. Thereby, the whole volume of the 3rd, 4th magnetic-resistant plates 34 and 35 becomes large.

  For this reason, even if the third and fourth anti-magnetic plates 34 and 35 are formed thin, the third and fourth anti-magnetic plates 34 and 35 increase in the amount of absorption of the external magnetic field that enters from the outside of the watch case 1. The magnetic resistance plates 34 and 35 are prevented from becoming saturated, and the magnetic resistance performance by the third and fourth magnetic resistance plates 34 and 35 is improved. As a result, the third auxiliary display motor 19 is not affected by the external magnetic field, so that the date indicator 20 and the third auxiliary needle 31 can be moved accurately and satisfactorily.

  The second anti-magnetic plate 33 is disposed so as to cover the entire upper side of the third sub display motor 19 in a state where the second anti-magnetic plate 33 partially overlaps the first anti-magnetic plate 32. For this reason, the first and second anti-magnetic plates 32 and 33 also absorb the external magnetic field entering from the outside of the watch 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 indicator 20 can be reliably rotated and the date can be switched satisfactorily, and the third sub-hand 31 can be moved by the third sub-display portion 22d. The day of the week or mode can be indicated well.

  Thus, according to this wristwatch, the first and second anti-magnetic plates 32 and 33 or the third and second anti-magnetic plates 32 and 35 are partially overlapped in plan view. Since the four anti-magnetic plates 34 and 35 are arranged so as to cover at least a part or all of one side of at least the front and back sides of the plurality of motors 15 to 19, the first and second anti-magnetic plates 32 and 33 or the first 3. The volume of the entire fourth and fourth anti-magnetic plates 34 and 35 can be increased, thereby preventing the first to fourth anti-magnetic plates 32 to 35 from becoming saturated. The antimagnetic performance by the antimagnetic plates 32 to 35 of 4 can be improved.

  That is, in a state where the first and second anti-magnetic plates 32 and 33 are partially overlapped, the first and second anti-magnetic plates 32 and 33 cover a part or all of the upper side of the plurality of motors 15 to 19. As a result, the entire volume of the first and second anti-magnetic plates 32 and 33 can be increased, thereby preventing the first and second anti-magnetic plates 32 and 33 from becoming saturated. Therefore, the antimagnetic performance by the first and second antimagnetic plates 32 and 33 can be improved.

  In addition, in a state where the third and fourth magnetic resistant plates 34 and 35 are partially overlapped, the third and fourth magnetic resistant plates 34 and 35 cover a part or all of the lower side of the plurality of motors 1 to 19. Therefore, the entire volume of the third and fourth magnetic resistant plates 34 and 35 can be increased, thereby preventing the third and fourth magnetic resistant plates 34 and 35 from becoming saturated. Therefore, the antimagnetic performance by the third and fourth antimagnetic plates 34 and 35 can be improved.

  Moreover, in this wristwatch, the first to fourth anti-magnetic plates 32 to 35 are arranged at intervals in the vertical direction that is the stacking direction thereof. The entire volume can be reliably increased. For this reason, even if each board thickness of the 1st-4th magnetic-resistant plates 32-35 is formed thinly, since the amount of absorption of an external magnetic field can be increased, the 1st-4th magnetic-resistant plates 32-35 are used. Saturation can be prevented, thereby improving the anti-magnetic performance of the first to fourth anti-magnetic plates 32-35.

  In other words, since the first and second anti-magnetic plates 32 and 33 are spaced apart from each other via the date wheel pressing plate 21, the volume of the entire first and second anti-magnetic plates 32 and 33 is sufficient. Can be large. For this reason, even if each of the first and second antimagnetic plates 32 and 33 is formed thin, the amount of absorption of the external magnetic field can be increased. Therefore, the first and second antimagnetic plates 32 and 33 Saturation can be prevented, thereby improving the anti-magnetic performance of the first and second anti-magnetic plates 32 and 33, so that the plurality of motors 15 to 19 are not affected by the external magnetic field. Can be.

  In addition, since the third and fourth anti-magnetic plates 34 and 35 are spaced apart from each other via the ground plate 36, the volume of the entire third and fourth anti-magnetic plates 34 and 35 is sufficiently increased. be able to. For this reason, even if the thickness of each of the third and fourth anti-magnetic plates 34 and 35 is reduced, the amount of absorption of the external magnetic field can be increased, so that the third and fourth anti-magnetic plates 34 and 35 Since the saturation state can be prevented, and the magnetic resistance performance by the third and fourth magnetic plates 34 and 35 can be improved thereby, the plurality of motors 15 to 19 are not affected by the external magnetic field. Can be.

  Further, in this wristwatch, the external magnetic field enters from the upper side in each magnetic flux direction of the plurality of motors 15 to 19 by extending the second magnetically resistant plate 33 in each magnetic flux direction of the plurality of motors 15 to 19. Thus, it is possible to reliably and satisfactorily prevent the characteristics of the plurality of motors 15 to 19 from being deteriorated.

  In this case, among the plurality of motors 15 to 19, the fourth magnetic-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. Therefore, it is possible to reliably and satisfactorily prevent the characteristics of the first sub display motor 18 from being deteriorated.

  In other words, the fourth anti-magnetic plate 35 is provided with an extension 35a extending in the direction of the magnetic flux generated in the coil block 27d having two coils in the first sub display motor 18 (the direction of the arrow shown in FIG. 8). Therefore, the extension 35a of the fourth magnetic shield plate 35 can reliably prevent the external magnetic field from entering from the lower side in the magnetic flux direction of the first sub display motor 18, and thereby the first sub display. The deterioration of the characteristics of the motor 18 can be reliably prevented.

  In this wristwatch, the second hand motor 15, the minute hand motor 16, and the hour hand motor 17 that indicate the time are the motors covered by the first to fourth magnetic-resistant plates 32 to 35. The minute hand motor 16 and the hour hand motor 17 can be prevented from being affected by the external magnetic field by the first to fourth magnetic-resistant plates 32 to 35, so that the second hand motor 23, the minute hand motor 16, and the hour hand motor 17 can cause the second hand 23. The minute hand 24 and the hour hand 25 can be moved accurately and satisfactorily.

  Moreover, in this wristwatch, the second hand motor 15 having the shortest driving cycle is the motor with which the first to third magnetic-resistant plates 32 to 34 overlap and covers, so that the second hand motor 15 has the first to third motors. The magnetic-resistant plates 32 to 34 can be prevented from being affected by an external magnetic field, whereby the second hand 23 can be accurately and satisfactorily moved by the second hand motor 15 to accurately know the second time.

  Furthermore, in this wristwatch, the first to fourth anti-magnetic plates 32 to 35 are arranged on both sides of the upper and lower parts, which are the front and back sides of the plurality of motors 15 to 19, so that the first to fourth anti-magnetic plates are provided. Since the magnetic resistance performance by 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 influence the external magnetic field. It can be made not to receive.

  That is, since the first and second antimagnetic 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 formed by the first and second antimagnetic plates 32 and 33. In addition, the third and fourth magnetic-resistant plates 34 and 35 are disposed on the lower side of the plurality of motors 15 to 19, so that the third and fourth magnetic-resistant performances can be improved. The magnetic resistance performance on the lower side of the plurality of motors 15 to 19 can be improved by the magnetic resistance plates 34 and 35.

  For this reason, since these magnetic resistance plates 32 to 35 can further improve the magnetic resistance performance, the first and second magnetic resistance plates 32 and 33 or the third and fourth magnetic resistance plates. Compared with the case where 34 and 35 are arrange | positioned only to the one side of the up-and-down part which is the front and back side of the several motors 15-19, all the several motors 15-19 are made not to receive the influence of an external magnetic field. be able to.

  In the above-described embodiment, the case where the present invention is applied to a wristwatch has been described. However, the present invention is not necessarily a wristwatch, and may be applied to various watches such as a travel watch, an alarm clock, a table clock, and a wall clock. it can. Further, the present invention is not limited to a timepiece, and can be widely applied to electronic devices including a movement incorporating a motor.

As mentioned above, although one Embodiment of this invention was described, this invention is not restricted to this, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
According to the first aspect of the present invention, in a plan view, the plurality of magnetic-resistant plates cover at least a part or all of one side of at least the front and back sides of the plurality of motors in a state where a part of the plurality of magnetic-resistant plates is overlapped. It is a movement characterized by being arranged.

  A second aspect of the present invention is the movement according to the first aspect, wherein the plurality of anti-magnetic plates are arranged at intervals in the stacking direction of the anti-magnetic plates.

  According to a third aspect of the present invention, in the movement according to the first or second aspect, the anti-magnetic plate is extended in a part or all of the magnetic flux directions of the plurality of motors. is there.

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

  According to a sixth aspect of the present invention, in the movement according to any of the first to fifth aspects, the plurality of magnetic-resistant plates are disposed on both sides of the front and back surfaces of the plurality of motors. It is a characteristic movement.

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

DESCRIPTION OF SYMBOLS 1 Watch case 5 Clock 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 Date indicator 21 Date indicator presser plate 22 Dial 22a Time character 22b 1st sub display part 22c 2nd sub display part 22d 3rd sub display part 32-35 1st-4th magnetic-resistant board 35a Extension part

Claims (7)

  In a plan view, in a state where a part of the plurality of magnetically resistant plates overlaps, the plurality of magnetically resistant plates are arranged so as to cover at least a part or all of one side on the front and back sides of the plurality of motors. Movement.   2. The movement according to claim 1, wherein the plurality of magnetic-resistant plates are arranged at intervals in the stacking direction of the magnetic-resistant plates. 3.   The movement according to claim 1 or 2, wherein the magnetically resistant plate is extended in a part or all of the magnetic flux directions of the plurality of motors.   The movement according to any one of claims 1 to 3, wherein the motor on which the plurality of magnetic-resistant plates are overlapped and covered is a motor for indicating a time.   5. The movement according to claim 1, wherein the motor in which the plurality of magnetic-resistant plates are overlapped and covered is a motor having the shortest driving cycle.   The movement according to any one of claims 1 to 5, wherein the plurality of magnetic resistant plates are arranged on both sides of the front and back surfaces of the plurality of motors. A timepiece comprising the movement according to any one of claims 1 to 6.

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