阅读说明：本技术 用于钟表的机芯和钟表 (Movement for a timepiece and timepiece ) 是由 小笠原健治 佐藤贤 于 2019-08-26 设计创作，主要内容包括：本发明提供一种用于钟表的机芯和钟表,其能够将无线通信装置搭载于钟表,而且能够避免对钟表的设计造成制约。机芯(5)配置于具有后盖的钟表外壳的内侧,并驱动指针。机芯(5)具备以来自外部的电波作为电力源而与外部的读取器通信的RFID标签(31)。(The invention provides a movement for a timepiece and a timepiece, which can mount a wireless communication device on the timepiece and avoid restricting the design of the timepiece. The movement (5) is disposed inside a timepiece case having a back cover and drives hands. The movement (5) is provided with an RFID tag (31) which communicates with an external reader by using radio waves from the outside as a power source.)

1. A movement for a timepiece, which is a movement for a timepiece that arranges and drives hands inside a timepiece case having a back cover,

the wireless communication device communicates with an external reader by using an external radio wave as a power source.

2. Movement for a timepiece according to claim 1,

having an outer surface facing the side of the back cover,

the wireless communication device is disposed within 10mm from the outer surface.

3. Movement for a timepiece according to claim 1,

further comprising a bottom plate for supporting at least one of a power source for generating power for rotating the hand and a gear train for transmitting power to the hand,

the wireless communication device is disposed at a position where it is not visible from at least one of both sides in a thickness direction of the base plate and an outer side in a surface direction of the base plate orthogonal to the thickness direction.

4. Movement for a timepiece according to claim 1,

further provided with:

a bottom plate that supports at least one of a power source that generates power for rotating the hand and a train wheel that transmits the power to the hand; and

a conductive member mounted to the base plate,

the conductive member includes:

a flat plate portion extending in a plane direction orthogonal to a thickness direction of the base plate; and

a protruding portion that protrudes from an outer edge of the flat plate portion in the thickness direction,

the wireless communication device is disposed between the flat plate portion and the protruding portion when viewed from the outside.

5. Movement for a timepiece according to claim 1,

further provided with:

a bottom plate that supports at least one of a power source that generates power for rotating the hand and a train wheel that transmits the power to the hand; and

a conductive member mounted to the base plate,

the conductive member includes a flat plate portion extending in a plane direction orthogonal to a thickness direction of the base plate,

the flat plate portion is formed with a through hole,

the wireless communication device is disposed inside the through hole when viewed from the outside.

6. Movement for a timepiece according to claim 1,

the wireless communication device has a recess for accommodating the wireless communication device inside.

7. Movement for a timepiece according to claim 6,

a fitting projection to be fitted to the wireless communication device is formed on an inner surface of the recess.

8. Movement for a timepiece according to claim 6,

a caulking portion for restricting the detachment of the wireless communication device is formed at an opening edge of the recess.

9. Movement for a timepiece according to claim 1,

further provided with:

a control unit that controls a power source that generates power for rotating the pointer; and

a substrate on which the control unit is mounted and on which printed wiring is formed,

the wireless communication device is surface-mounted on the substrate at a position overlapping the printed wiring.

10. A timepiece, characterized in that it comprises, in a case,

the disclosed device is provided with:

a timepiece case having a back cover; and

a movement for a timepiece, which is disposed inside the timepiece case and drives hands,

the movement for a timepiece includes a wireless communication device that communicates with an external reader using radio waves from the outside as a power source.

Technical Field

The present disclosure relates to a movement for a timepiece and a timepiece.

Background

Conventionally, there is a timepiece mounted with a wireless communication device such as an RFID tag (for example, see patent document 1). Patent document 1 discloses a wristwatch in which a contactless data transmitting/receiving device is disposed outside a timepiece main body (timepiece case). The contactless data transmitting/receiving device can communicate data with an external transmitting/receiving device in a contactless manner. In such a timepiece, history information such as battery replacement or repair, information for inquiring about the history information, information for determining authenticity, and the like are embedded in the wireless communication device. Information embedded in a wireless communication device can be read by wireless communication using an external reader.

Disclosure of Invention

Problems to be solved by the invention

However, if the wireless communication device is provided outside the timepiece case, there are cases where restrictions are imposed on the design of the timepiece.

Accordingly, an embodiment of the present invention provides a movement for a timepiece and a timepiece, which can mount a wireless communication device on the timepiece and can avoid restrictions on the design of the timepiece.

Means for solving the problems

A movement for a timepiece according to an embodiment of the present invention is a movement for a timepiece in which hands are disposed and driven inside a timepiece case having a back cover, and includes a wireless communication device that communicates with an external reader using radio waves from the outside as a power source.

According to the embodiment of the present invention, the wireless communication device can be mounted on the timepiece, not on an externally facing component of the timepiece. This makes it possible to avoid restrictions on the design of a timepiece on which a movement for a timepiece is mounted.

In particular, in the case where the information embedded in the wireless communication device is history information such as battery replacement or repair, information for inquiring the history information, or information for determining authenticity, the case where the information is read from the wireless communication device by an external reader is the operation time of battery replacement or repair of the timepiece. That is, the situation where information is read from the wireless communication device by an external reader is the operating time necessary to remove the back cover of the timepiece case. Therefore, by disposing the wireless communication device inside the timepiece case, even if it is difficult to communicate between the reader and the wireless communication device outside the timepiece case, communication between the reader and the wireless communication device can be performed when communication is necessary, and therefore, a decrease in convenience as a timepiece including the wireless communication device can be suppressed.

The following structure is desirable: the movement for a timepiece has an outer surface facing the back cover side, and the wireless communication device is disposed within 10mm from the outer surface.

According to the embodiment of the present invention, the inside of the timepiece case is opened by detaching the back cover, so that the external reader can be brought close to within 10mm from the wireless communication device. Thus, even if the movement for a timepiece is not taken out of the timepiece case, information can be read from the wireless communication device. Therefore, the operational efficiency of battery replacement, simple repair, or the like can be improved.

In the movement for a timepiece described above, the following structure is preferable: the wireless communication device is disposed at a position where the wireless communication device cannot be visually recognized from at least one of both sides in a thickness direction of the base plate and an outer side in a surface direction of the base plate orthogonal to the thickness direction.

According to the embodiments of the present invention, the wireless communication device can be prevented from being exposed to both the one side in the thickness direction of the chassis and the outer side in the surface direction of the chassis. Thus, the wireless communication device is disposed at a position difficult to be easily detached from the movement for a timepiece. Thus, improper replacement of the wireless communication device can be suppressed.

In the movement for a timepiece described above, the following structure is preferable: the wireless communication device further includes a bottom plate that supports at least one of a power source that generates power for rotating the pointer and a train wheel that transmits the power to the pointer, and a conductive member attached to the bottom plate, wherein the conductive member includes a flat plate portion extending in a plane direction orthogonal to a thickness direction of the bottom plate, and an extension portion extending in the thickness direction from an outer edge of the flat plate portion, and the wireless communication device is disposed between the flat plate portion and the extension portion when viewed from the outside.

According to the embodiments of the present invention, even if the conductive member that blocks radio waves is arranged around the wireless communication device, the flat plate portion and the protruding portion can be secured as a propagation path of radio waves. Therefore, information can be reliably read from the wireless communication device by an external reader.

In the movement for a timepiece described above, the following structure is preferable: the wireless communication device further includes a bottom plate that supports at least one of a power source that generates power for rotating the pointer and a train wheel that transmits the power to the pointer, and a conductive member attached to the bottom plate, wherein the conductive member includes a flat plate portion that extends in a plane direction orthogonal to a thickness direction of the bottom plate, the flat plate portion has a through hole, and the wireless communication device is disposed inside the through hole when viewed from the outside.

According to the embodiments of the present invention, even if a conductive member that blocks radio waves is arranged around the radio communication apparatus, the through hole can be secured as a propagation path of radio waves. Therefore, information can be reliably read from the wireless communication device by an external reader.

The following structure is desirable: the movement for a timepiece described above has a recess for accommodating the wireless communication device inside.

According to the embodiments of the present invention, the wireless communication apparatus can be prevented from falling off. Therefore, the quality of the movement for a timepiece provided with the wireless communication device can be improved. In addition, since the wireless communication device is surrounded by the inner surface of the recess, it is difficult to easily detach the wireless communication device. Thus, improper replacement of the wireless communication device can be suppressed.

In the movement for a timepiece described above, the following structure is preferable: a fitting projection to be fitted to the wireless communication device is formed on an inner surface of the recess.

According to the embodiments of the present invention, the wireless communication device can be prevented from falling off the recess. Therefore, the quality of the movement for a timepiece provided with the wireless communication device can be further improved.

In the movement for a timepiece described above, the following structure is preferable: a caulking portion for restricting the detachment of the wireless communication device is formed at an opening edge of the recess.

According to the embodiments of the present invention, the wireless communication device can be prevented from falling off the recess. Therefore, the quality of the movement for a timepiece provided with the wireless communication device can be further improved.

In the movement for a timepiece described above, the following structure is preferable: the wireless communication device further includes a control unit that controls a power source that generates power to rotate the pointer, and a substrate on which the control unit is mounted and on which printed wiring is formed, wherein the wireless communication device is surface-mounted on the substrate at a position overlapping the printed wiring.

According to the embodiments of the present invention, the printed wiring can be configured so as to be peeled off from the substrate even when the wireless communication device is detached from the substrate. Thus, if the radio communication device is detached from the substrate, the printed wiring is disconnected, and the movement for the timepiece cannot operate normally. Therefore, improper replacement of the wireless communication device can be suppressed.

A timepiece according to an embodiment of the present invention includes a timepiece case having a back cover, and a movement for a timepiece that is disposed inside the timepiece case and drives hands, and the movement for a timepiece includes a wireless communication device that communicates with an external reader using radio waves from the outside as a power source.

According to the embodiments of the present invention, since the movement for a timepiece is provided which can mount the wireless communication device on the timepiece and can avoid restrictions on the design of the timepiece, the timepiece provided with the wireless communication device and having excellent design properties can be provided.

Effects of the invention

According to the present invention, it is possible to provide a timepiece movement and a timepiece in which a wireless communication device can be mounted on a timepiece and restrictions on the design of the timepiece can be avoided.

Drawings

Fig. 1 is a sectional view showing a timepiece of a first embodiment;

fig. 2 is a perspective view of the movement of the first embodiment as viewed from the front side;

fig. 3 is a perspective view of the bottom plate of the first embodiment as viewed from the front side;

fig. 4 is a plan view of the circuit block of the first embodiment as viewed from the back side;

figure 5 is a cross-sectional view showing a portion of a movement of the first embodiment;

fig. 6 is a cross-sectional view showing a part of a movement of a first modification of the first embodiment;

fig. 7 is a cross-sectional view showing a part of a movement of a second modification of the first embodiment;

fig. 8 is a perspective view showing a part of a bottom plate of a third modification of the first embodiment;

fig. 9 is a cross-sectional view showing a part of a movement of a third modification of the first embodiment;

fig. 10 is a plan view of the circuit block of the second embodiment as viewed from the back side;

fig. 11 is a diagram illustrating an operation of the movement of the second embodiment, and is a perspective view showing a circuit block of the second embodiment;

figure 12 is a perspective view of the movement of the third embodiment, viewed from the back;

fig. 13 is a plan view of the movement of the fourth embodiment as viewed from the front side;

fig. 14 is a perspective view of the movement of the fourth embodiment as viewed from the front side.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, an electronic timepiece of analog quartz watch type is exemplified as an example of the timepiece. In the following description, components having the same function or similar functions are denoted by the same reference numerals. In addition, a repetitive description of those configurations may be omitted.

[ first embodiment ]

Fig. 1 is a sectional view showing a timepiece of a first embodiment.

As shown in fig. 1, a timepiece 1 of the embodiment includes a timepiece case 2, a dial 3, hands 4, and a movement 5 (movement for a timepiece). The timepiece case 2 includes: a cylindrical case body 10 having both ends opened; a windshield 14 that closes the one end opening 11 of the housing main body 10; and a rear cover 16 that closes the other end opening 12 of the housing main body 10. The timepiece case 2 houses a dial 3, hands 4, and a movement 5. In the following description, the windshield 14 side with respect to the movement 5 is referred to as the "back side" of the movement. The rear cover 16 side with respect to the movement 5 is referred to as the "front side" of the movement.

The dial 3 is formed in a circular plate shape. The dial 3 can be visually recognized through the windshield 14.

The pointer 4 is disposed between the dial 3 and the windshield 14. The hand 4 is mounted on a rotation shaft 21 of the movement 5.

Movement 5 drives hands 4. The movement 5 is disposed between the dial 3 and the rear cover 16. In a state where the rear cover 16 of the timepiece case 2 is removed, the movement 5 is exposed to the outside through the other end opening 12 of the case main body 10.

Fig. 2 is a perspective view of the movement of the first embodiment as viewed from the front side.

As shown in fig. 2, the movement 5 includes a bottom plate 40, a rotary shaft 21 (see fig. 1), a motor 23 (power source), a gear train (not shown), a battery 27, a gear train bridge 29, a circuit block 50, a circuit platen (circuit holder さえ)60, and an RFID tag 31 (wireless communication device).

Fig. 3 is a perspective view of the bottom plate of the first embodiment as viewed from the front side.

As shown in fig. 2 and 3, the bottom plate 40 constitutes a base plate of the movement 5. The base plate 40 is formed of an insulating material such as a resin material. The bottom plate 40 is formed in a disk shape whose thickness direction coincides with the front-back direction of the movement 5 in accordance with the shape of the timepiece case 2 (see fig. 1). The base plate 40 supports the motor 23 or the train, the battery 27, and the like. On the surface of the bottom plate 40 facing the front side, a recess 41 for accommodating the RFID tag 31, a motor holding portion 42 for holding the motor 23, and a battery holding portion 43 for holding the battery 27 are formed. The recess 41 will be explained later. The motor holding portion 42 is recessed toward the back side to allow the coil of the motor 23 to enter. The battery holding portion 43 is recessed toward the back side so that the battery 27 can enter, and the battery holding portion 43 includes a side wall that laterally surrounds the battery 27.

As shown in fig. 2, the motor 23 is disposed on the front side of the base plate 40. The motor 23 generates power for rotating the indicating needle 4 (see fig. 1). The gear train couples the rotor of the motor 23 and the rotary shaft 21 (refer to fig. 1). The train wheel transmits the rotation of the rotor of the motor 23 to the hand 4 fitted to the rotary shaft 21. The gear train includes, for example, a front-side gear train disposed on the front side of the bottom plate 40. The battery 27 is disposed on the front side of the bottom plate 40. The battery 27 is the power source of the motor 23.

The train wheel bridge 29 is fitted to the front side of the base plate 40. The train wheel bridge 29 is disposed so as to avoid the battery 27 in a plan view. The train wheel bridge 29 rotatably supports the front side train wheel with the bottom plate 40.

Fig. 4 is a plan view of the circuit block of the first embodiment as viewed from the back side.

As shown in fig. 2 and 4, the circuit block 50 is disposed on the front side of the chassis 40. The circuit block 50 is a printed substrate. The circuit block 50 includes: a substrate 51 on which a printed wiring 54 is formed; and a quartz unit 52 and an integrated circuit 53 (control unit) mounted on the substrate 51. The integrated circuit 53 controls the motor 23. The integrated circuit 53 is made of, for example, CMOS or PLA. The integrated circuit 53 operates by electric power supplied from the battery 27. The integrated circuit 53 has: an oscillation unit (oscillator) that outputs a reference signal based on the vibration of the quartz vibrator in the quartz unit 52; a frequency dividing unit (frequency divider) that divides a reference signal of the oscillation unit; and a drive unit (driver) that outputs a motor drive signal (drive pulse) based on the output signal of the frequency dividing unit. The integrated circuit 53 drives the motor 23 by a motor drive signal output from the drive unit.

As shown in fig. 2, the circuit pressing plate 60 is formed by press working a plate material composed of a metal material. The circuit board 60 includes: a flat plate portion 61; and a terminal portion 62 and a switch spring 63 (projecting portion) extending from the flat plate portion 61. Flat plate portion 61 is disposed so as to sandwich circuit block 50 between it and base plate 40. Flat plate portion 61 holds circuit block 50 between it and base plate 40. The flat plate portion 61 extends along the surface direction of the bottom plate 40 orthogonal to the thickness direction of the bottom plate 40. Flat plate portion 61 is formed so as to avoid battery 27 in a plan view seen in the thickness direction of core 5. The flat plate portion 61 is formed smaller than the bottom plate 40 in a plan view. The flat plate portion 61 is disposed further inward than the outer edge of the bottom plate 40 in a plan view. The flat plate portion 61 is fixed to the bottom plate 40 by a plurality of screws 65.

The terminal portion 62 extends from a portion of the outer edge of the flat plate portion 61 that faces the battery 27. The terminal portion 62 is in contact with the positive electrode of the battery 27 from the front side. Further, the terminal portion 62 extends so as to straddle the battery 27 in a plan view, then extends toward the back side, and is locked to the side surface of the bottom plate 40. Thereby, the terminal portions 62 sandwich the battery 27 between it and the bottom plate 40.

Opening/closing spring 63 extends from the outer edge of flat plate portion 61 to the back side in the thickness direction of movement 5. The switch spring 63 extends along a side surface of the substrate 51 of the circuit block 50 and a side surface of the bottom plate 40. The opening/closing spring 63 is elastically deformable with respect to the flat plate portion 61. The switch spring 63 is provided at a position corresponding to a button (not shown) provided in the timepiece case 2 (see fig. 1). In the initial state, the switch spring 63 is separated from the circuit block 50. When the push button is operated, the switch spring 63 is pressed by the push button and is deflected, and comes into contact with the printed wiring 54 on the end surface of the substrate 51 of the circuit block 50. As a result, a part of the printed wiring 54 has the same potential as the positive electrode of the battery 27, and the integrated circuit 53 of the circuit block 50 detects that the button has been operated.

The circuit board 60 further includes a contact spring (not shown) that is electrically connected to the printed wiring 54 (see fig. 4) of the substrate 51. The contact spring extends from the flat plate portion 61 toward the back side. The contact springs are pressed against a part of the printed wiring 54 on the substrate 51 of the circuit block 50. Thereby, the circuit board 60 conducts a part of the printed wiring 54 on the substrate 51 and the positive electrode of the battery 27, and supplies power to the integrated circuit 53.

Fig. 5 is a sectional view showing a part of the movement of the first embodiment.

As shown in fig. 2 and 5, the RFID tag 31 is a passive tag that operates using radio waves from an external reader as a power source. The RFID tag 31 communicates with an external reader. In the RFID tag 31, history information such as battery replacement or repair of the movement 5, information for inquiring about the history information, information for determining authenticity, and the like are embedded. The information embedded in the RFID tag 31 can be read using an external reader. The RFID tag 31 is formed in a rectangular parallelepiped shape. The RFID tag 31 includes an RFIC element, an antenna element, and a package that houses the RFIC element and the antenna element.

As shown in fig. 2, 3, and 5, the RFID tag 31 is disposed inside the recess 41 formed in the bottom plate 40. In the outer peripheral portion of bottom plate 40, recess 41 is formed between flat plate portion 61 of circuit holding plate 60 and switch spring 63 when viewed from the outside of movement 5. Thus, the RFID tag 31 is disposed between the flat plate portion 61 of the circuit board 60 and the switch spring 63 when viewed from the outside of the movement 5.

The recess 41 is formed larger than the RFID tag 31 and has a rectangular shape in a plan view. The recess 41 is recessed toward the back side and is open on the front side. The opening of the recess 41 is closed by the substrate 51 of the circuit block 50 and the flat plate portion 61 of the circuit board 60. Thus, the RFID tag 31 is disposed at a position where it cannot be visually recognized from both sides in the thickness direction of the base plate 40 and both sides outside in the surface direction of the base plate 40. The RFID tag 31 may be fixed in the recess 41 with an adhesive, or may be carried only in the recess 41.

As shown in fig. 2 and 5, the RFID tag 31 is disposed within 10mm from the outer surface of the movement 5 facing the front side. More preferably, the RFID tag 31 is disposed at a position within 10mm from the outer surface facing the front side of the movement 5, the position bypassing the circuit board 60. At least a part of the RFID tag 31 overlaps the flat plate portion 61 of the circuit pressing plate 60 in a plan view. At least a part of the RFID tag 31 overlaps the switch spring 63 of the circuit board 60 when viewed from the outside in the surface direction of the chassis 40.

As described above, the movement 5 of the present embodiment includes the RFID tag 31 that communicates with an external reader using radio waves from the outside as a power source. According to this configuration, the RFID tag 31 can be mounted on the timepiece 1 instead of mounting the RFID tag on an externally facing component (a strap or the like not shown) of the timepiece case 2 or the timepiece 1. This can avoid restrictions on the design of the timepiece 1 on which the movement 5 is mounted.

In particular, in the case where the information embedded in the RFID tag 31 is history information such as battery replacement or repair, information for inquiring about the history information, or information for determining authenticity, the case where the information is read from the RFID tag 31 by an external reader is the operation time of battery replacement or repair or the like of the timepiece 1. That is, the case where information is read from the RFID tag 31 by an external reader is the operation time necessary to detach the back cover 16 of the timepiece case 2. Therefore, by disposing the RFID tag 31 inside the timepiece case 2, even if it is difficult to communicate between the reader and the RFID tag 31 outside the timepiece case 2, communication between the reader and the RFID tag 31 can be performed when communication is necessary, and therefore, a decrease in convenience as the timepiece 1 including the RFID tag 31 can be suppressed.

The RFID tag 31 is disposed within 10mm from the outer surface facing the rear cover 16 (the front side of the movement 5). According to this configuration, the back cover 16 is removed to open the inside of the timepiece case 2, thereby making it possible to bring an external reader close to within 10mm from the RFID tag 31. This enables information to be read from the RFID tag 31 without removing the movement 5 from the timepiece case 2. Therefore, the operational efficiency of battery replacement, simple repair, or the like can be improved.

The RFID tag 31 is disposed at a position where it cannot be visually recognized from both sides in the thickness direction of the base plate 40 and both sides outside in the surface direction of the base plate 40. According to this configuration, the RFID tag 31 can be prevented from being exposed across in both the thickness direction of the chassis 40 and the surface direction outer side of the chassis 40. Thereby, the RFID tag 31 is disposed at a position difficult to be easily detached from the movement 5. Thus, improper replacement of the RFID tag 31 can be suppressed.

Further, the circuit board 60 formed of a metal material includes: a flat plate portion 61 extending in the surface direction of the bottom plate 40; and a switch spring 63 extending from an outer edge of the flat plate portion 61 in the thickness direction of the bottom plate 40. The RFID tag 31 is disposed between the flat plate portion 61 and the switch spring 63 when viewed from the outside. According to this configuration, even if the circuit board 60 that blocks radio waves is disposed around the RFID tag 31, the path between the flat plate portion 61 and the switch spring 63 can be secured as a propagation path of radio waves. Therefore, information can be reliably read from the RFID tag 31 by an external reader.

The flat plate portion 61 of the circuit board 60 is disposed inside the outer edge of the bottom plate 40 in a plan view. Thus, even if movement 5 is disposed in timepiece case 2, a gap is formed between flat plate portion 61 and the inner surface of timepiece case 2. Thus, a propagation path of the electric wave can be ensured between the RFID tag 31 and the external reader. Therefore, even if the movement 5 is not taken out of the timepiece case 2, information can be reliably read from the RFID tag 31 by an external reader.

In addition, a recess 41 for accommodating the RFID tag 31 is formed in the bottom plate 40. With this configuration, the RFID tag 31 can be prevented from falling off. Therefore, the quality of the movement 5 including the RFID tag 31 can be improved. In addition, since the RFID tag 31 is surrounded by the inner surface of the recess 41, it is difficult to easily detach the RFID tag 31. Thus, improper replacement of the RFID tag 31 can be suppressed.

Since the timepiece 1 of the present embodiment includes the movement 5 described above, the timepiece 1 can be provided with the RFID tag 31 and has excellent design.

The method of placing the RFID tag 31 in the recess 41 is not limited to the method of the first embodiment, and the method described in the following modification may be applied.

Fig. 6 is a cross-sectional view showing a part of a movement of a first modification of the first embodiment. Fig. 7 is a cross-sectional view showing a part of a movement of a second modification of the first embodiment.

For example, as shown in fig. 6 and 7, the opening edge of the concave portion 41 may be subjected to caulking, and a caulking portion 45 may be formed at the opening edge of the concave portion 41, the caulking portion 45 projecting inward in a plan view. The caulking portion 45 is formed so that at least a part thereof overlaps the RFID tag 31 in a plan view. Thereby, the caulking portion 45 restricts the RFID tag 31 from falling off from the recessed portion 41.

The recessed portion 41 may be formed so that the caulking portion 45 always comes into contact with the RFID tag 31 from the front side as shown in fig. 6, or may be formed so that the caulking portion 45 can be separated from the RFID tag 31 as shown in fig. 7. By forming the caulking portion 45 so as to be separable from the RFID tag 31, a force applied to the RFID tag 31 during caulking processing can be reduced.

Fig. 8 is a perspective view showing a part of a bottom plate of a third modification of the first embodiment. Fig. 9 is a cross-sectional view showing a part of a movement of a third modification of the first embodiment.

As shown in fig. 8 and 9, a plurality of fitting projections 46 to be fitted to the RFID tag 31 may be formed on the inner surface of the recess 41. The plurality of fitting projections 46 project from the four side surfaces of the recess 41 toward the center of the recess 41 in a plan view. The fitting projection 46 bulges in an arc shape in a plan view, and is pressed against the side surface of the RFID tag 31 at the tip end portion. Thereby, the plurality of fitting protrusions 46 hold the RFID tag 31 inside the recessed portion 41.

With the configuration of each of these modifications, the RFID tag 31 can be prevented from falling off the recess 41. Therefore, the quality of the movement 5 including the RFID tag 31 can be further improved.

[ second embodiment ]

Next, a second embodiment will be described with reference to fig. 10 and 11. In the first embodiment, the RFID tag 31 is accommodated inside the recess 41 of the chassis 40. In contrast, the second embodiment is different from the first embodiment in that the RFID tag 31 is fixed to the substrate 51 of the circuit block 50. The configuration other than the configuration described below is the same as that of the first embodiment.

Fig. 10 is a plan view of the circuit block of the second embodiment as viewed from the back side.

As shown in fig. 10, the RFID tag 31 is fixed to the substrate 51. The RFID tag 31 is surface-mounted on the substrate 51. The RFID tag 31 is disposed at a position overlapping the printed wiring 54. The printed wiring 54 on which the RFID tag 31 is superimposed is preferably a wiring in which a malfunction of the movement 5 occurs if the wiring is broken, and for example, a power supply line, a switch line, or a wiring connecting the motor 23 and the integrated circuit 53 is suitable.

Fig. 11 is a diagram illustrating an operation of the movement of the second embodiment, and is a perspective view showing a circuit block of the second embodiment.

As shown in fig. 11, since the printed wiring 54 and the RFID tag 31 are firmly fixed by surface mounting if the RFID tag 31 is detached from the substrate 51, at least a part of the printed wiring 54 is peeled off from the substrate 51 together with the RFID tag 31. This causes the printed wiring 54 to be disconnected, and the movement 5 to malfunction.

As described above, in the present embodiment, the RFID tag 31 is surface-mounted on the substrate 51 at a position overlapping the printed wiring 54. According to this configuration, when the RFID tag 31 is detached from the substrate 51, the printed wiring 54 can be configured to be peeled off from the substrate 51. Thus, if the RFID tag 31 is detached from the substrate 51, the printed wiring 54 is disconnected, and the movement 5 cannot operate normally. Therefore, improper replacement of the RFID tag 31 can be suppressed.

In the second embodiment, the RFID tag 31 is fixed to the substrate 51 by surface mounting, but the present invention is not limited thereto, and the RFID tag 31 may be fixed to the substrate 51 by an adhesive. However, in order to peel the printed wiring 54 from the substrate 51 together with the RFID tag 31, surface mounting is more suitable at a point where the printed wiring 54 and the RFID tag 31 can be more firmly fixed.

[ third embodiment ]

Next, a third embodiment will be described with reference to fig. 12. In the first embodiment, the RFID tag 31 is disposed between the flat plate portion 61 of the circuit board 60 and the switch spring 63 when viewed from the outside of the movement 5. In contrast, the third embodiment differs from the first embodiment in that the RFID tag 31 is disposed inside the through hole 174 of the back pressure plate (pressing piece さえ)170 when viewed from the outside of the core 105. The configuration other than the configuration described below is the same as that of the first embodiment.

Fig. 12 is a perspective view of the movement of the third embodiment as viewed from the back side.

As shown in fig. 12, the movement 105 is provided with a bottom plate 140, a rotation shaft 21, a wheel train 125, a battery 27, a back pressure plate 170, and an RFID tag 31. The base plate 140 supports a motor (not shown), a wheel train 125, a battery 27, and the like. For example, the gear train 125 includes a gear 133 disposed on the back side of the base plate 140. The gear train 125 transmits the rotation of the rotor of the motor to the hand 4 (see fig. 1).

The back pressure plate 170 is formed by press working a plate material made of a metal material. The back pressure plate 170 includes: a flat plate portion 171; and a bridge (ジャンパ)172 and a detent 173 extending from the flat plate portion 171. The flat plate portion 171 is disposed on the back side of the base plate 140. The flat plate portion 171 extends in the surface direction of the base plate 140. The flat plate portion 171 rotatably supports the train wheel 125 including the gear 133 between it and the bottom plate 140. The flat plate portion 171 has a through hole 174. Through hole 174 penetrates flat plate portion 171 in the thickness direction of bottom plate 140.

The bridging member 172 is a member for correcting the position of the rotational direction of the gear 133. The bridging member 172 is an elastically deformable cantilever beam whose tip portion becomes a free end. The front end of the bridge 172 is disposed on the front side of the flat plate 171. The front end of the bridge 172 can be engaged with the outer periphery of the gear 133. The bridge 172 corrects the rotation of the gear 133 by engaging the tip end portion with the tooth portion on the outer periphery of the gear 133. The locking portion 173 extends from the outer edge of the flat plate portion 171 toward the front side. The locking portion 173 engages with the outer peripheral surface of the base plate 140. Thus, the back pressure plate 170 sandwiches the train 125 including the gear 133 between the flat plate portion 171 and the bottom plate 140.

The RFID tag 31 is disposed between the base plate 140 and the flat plate portion 171 of the back pressure plate 170. For example, the RFID tag 31 is fixed to the chassis 140. The RFID tag 31 is disposed inside the through hole 174 of the back cover 170 when viewed from the outside of the core 105. In the present embodiment, at least a part of the RFID tag 31 is disposed inside the through hole 174 in a plan view. The RFID tag 31 is disposed at a position where it cannot be visually recognized from both the front side and the outer side in the surface direction of the chassis 140. The RFID tag 31 is disposed within 10mm from the outer surface of the movement 105 facing the front side.

As described above, in the present embodiment, the back pressure plate 170 made of a metal material includes the flat plate portion 171 extending in the surface direction of the base plate 140. The flat plate portion 171 has a through hole 174, and the RFID tag 31 is disposed inside the through hole 174 when viewed from the outside. According to this configuration, even if the back pressure plate 170 that blocks radio waves is disposed around the RFID tag 31, the through hole 174 can be secured as a propagation path of radio waves. Therefore, information can be reliably read from the RFID tag 31 by an external reader.

The RFID tag 31 is disposed at a position where it cannot be seen from both the front side and the outer side in the surface direction of the bottom plate 140. According to this configuration, the RFID tag 31 can be prevented from being exposed across in both the thickness direction of the chassis 140 and the surface direction outer side of the chassis 140. This arrangement makes it difficult to easily detach the RFID tag 31. Thus, improper replacement of the RFID tag 31 can be suppressed.

[ fourth embodiment ]

Next, a fourth embodiment will be described with reference to fig. 13 and 14. In the first embodiment, at least a part of the RFID tag 31 overlaps with the conductive member (the switch spring 63 of the circuit board 60) when viewed from the outside in the surface direction of the base plate 40. In contrast, the fourth embodiment is different from the first embodiment in that the RFID tag 31 does not overlap the conductive member (terminal plate 280) when viewed from the outside in the surface direction of the chassis 240. The configuration other than the configuration described below is the same as that of the first embodiment.

Fig. 13 is a plan view of the movement of the fourth embodiment as viewed from the front side. Fig. 14 is a perspective view of the movement of the fourth embodiment as viewed from the front side. In fig. 14, the terminal plate 280 is shown in a state of being detached.

As shown in fig. 13 and 14, the movement 205 is provided with a bottom plate 240, a train wheel 225, a battery 27, a train wheel bridge 229, a quartz unit 52, a terminal block 280, and an RFID tag 31. The base plate 240 supports a motor (not shown) or a train wheel 225, a battery 27, a quartz unit 52, and the like.

As shown in fig. 14, in the chassis 240, a recess 241 for accommodating the RFID tag 31 is formed. The recess 241 is formed in the outer peripheral portion of the base plate 240. The concave portion 241 is recessed toward the back side and is open on the front side. In addition, a part of the side surface of the recess 241 is opened outside in the surface direction of the bottom plate 240.

As shown in fig. 13, the gear train 225 includes a gear 233 disposed on the front side of the bottom plate 240. The gear train 225 transmits the rotation of the rotor of the motor to the hand 4 (see fig. 1).

As shown in fig. 13 and 14, a train wheel bridge 229 is fitted to the front side of the bottom plate 240. The train wheel bridge 229 is disposed so as to avoid the battery 27 in a plan view. The train wheel bridge 229 supports the train wheel 225 including the gear 233 in a rotatable manner between it and the bottom plate 240.

As shown in fig. 13, the terminal plate 280 is formed by press working a plate material composed of a metal material. Terminal plate 280 includes: a flat plate portion 281; and a terminal portion 282 and a contact spring 283 extending from the flat plate portion 281. The flat plate portion 281 is disposed on the front side of the base plate 240. The flat plate portion 281 extends in the surface direction of the base plate 240. The flat plate portion 281 is formed so as to avoid the battery 27 in a plan view. The flat plate portion 281 is formed smaller than the bottom plate 240 in a plan view. The flat plate portion 281 is disposed further inside than the outer edge of the bottom plate 240 in a plan view. The flat plate portion 281 covers the recess 241 of the bottom plate 240 when viewed from the front side (see fig. 14). The flat plate portion 281 is fixed to the base plate 240 by a plurality of screws 285.

The terminal portion 282 extends from a portion of the outer edge of the flat plate portion 281 that faces the battery 27. The terminal portion 282 is in contact with the positive electrode of the side surface of the battery 27. The contact spring 283 extends from the flat plate portion 281 toward the back side. The contact spring 283 is pressed against a printed wiring on a circuit board not shown. Thus, the terminal plate 280 conducts the printed wiring on the circuit board and the positive electrode of the battery 27, and supplies electric power to an integrated circuit (not shown) mounted on the circuit board.

As shown in fig. 13 and 14, the RFID tag 31 is disposed inside a concave portion 241 formed in the chassis 240. The RFID tag 31 is disposed within 10mm from the outer surface of the movement 205 facing the front side. More preferably, the RFID tag 31 is disposed at a position within 10mm from the outer surface of the movement 205 facing the front side, bypassing the terminal plate 280. The RFID tag 31 overlaps the flat plate portion 281 of the terminal plate 280 in a plan view. Thus, the RFID tag 31 is disposed at a position where it cannot be visually recognized from both sides in the thickness direction of the chassis 240. The RFID tag 31 is disposed at a position not overlapping the terminal plate 280 when viewed from the outside in the surface direction of the base plate 240. In addition, the recess 241 of the bottom plate 240 may penetrate the bottom plate 240, and in this case, it is preferable to fix the RFID tag 31 to the side surface of the recess 241.

As described above, in the present embodiment, the RFID tag 31 is disposed at a position where it cannot be visually recognized from both sides in the thickness direction of the chassis 240. According to this configuration, the RFID tag 31 can be prevented from being exposed across in both the thickness direction of the chassis 240 and the surface direction of the chassis 240. This arrangement makes it difficult to easily detach the RFID tag 31. Thus, improper replacement of the RFID tag 31 can be suppressed.

The RFID tag 31 is disposed at a position not overlapping the terminal plate 280 when viewed from the outside in the surface direction of the base plate 240. This ensures a propagation path of the radio wave that bypasses the flat plate portion 281 of the terminal plate 280 over a wide range. Therefore, information can be reliably read from the RFID tag 31 by an external reader.

The flat plate portion 281 of the terminal plate 280 made of a metal material is disposed inside the outer edge of the base plate 240 in a plan view. Thus, even if the movement 205 is disposed in the timepiece case 2, a gap is formed between the flat plate portion 281 that cuts off radio waves and the inner surface of the timepiece case 2. Thus, a propagation path of the electric wave can be ensured between the RFID tag 31 and the external reader. Therefore, even if the movement 205 is not detached from the timepiece case 2, information can be reliably read from the RFID tag 31 by an external reader.

The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are conceivable within the technical scope thereof.

For example, although the recess for accommodating the RFID tag is formed in the chassis in the above embodiment, the present invention is not limited thereto. For example, a recess may be formed in a member (a wheel train bridge, a battery frame supporting a battery, or the like) provided separately from the base plate.

In the above-described embodiment, the recess formed in the bottom plate is open in the thickness direction of the bottom plate, but the present invention is not limited thereto, and the recess may be open outside in the surface direction of the bottom plate.

In the above-described embodiment, the electronic timepiece of analog quartz watch type and the movement mounted on the electronic timepiece have been described as examples, but the present invention may be applied to a movement mounted on a mechanical timepiece.

It is to be noted that the components in the above-described embodiments may be replaced with well-known components without departing from the scope of the present invention, and the above-described embodiments and modifications may be appropriately combined.

Description of the symbols

1 … … clock 2 … … clock case 4 … … pointer 5, 105, 205 … … movement (movement for clock) 16 … … rear cover 23 … … motor (power source) 31 … … RFID tag (wireless communication device) 40, 140, 240 … … bottom plate 41, 241 … … recess 45 … … riveted part 46 … … jogged protrusion 51 … … base plate 53 … … integrated circuit (control part) 54 … … printed wiring 60 … … circuit pressing plate (conductive member) 61 … … flat plate part 63 … … switch spring (extension part) 125, 225 … … gear train 170 … … back pressing plate (conductive member) 171 … … flat plate part 174 terminal plate 174 … … through hole 280 … … (conductive member) 281 … … flat plate part 283 … … contact spring (extension part).