CN107621775B - Mechanism module, movement, and timepiece - Google Patents
Mechanism module, movement, and timepiece Download PDFInfo
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- CN107621775B CN107621775B CN201710506542.XA CN201710506542A CN107621775B CN 107621775 B CN107621775 B CN 107621775B CN 201710506542 A CN201710506542 A CN 201710506542A CN 107621775 B CN107621775 B CN 107621775B
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- mechanism module
- wheel
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- movement
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Abstract
The invention provides a mechanism module, a movement and a timepiece, wherein the mechanism module can prevent electrification by a simple structure. A mechanism module (21) uses metal members (33, 36, 39, 53, 54) in a part thereof, and is provided with: a gear train having a plurality of gears; a motor (40A) for driving the wheel train; and a receiving terminal (47b) capable of receiving an electric signal for driving the motor from the circuit block (23). The mechanism module (21) is fixed to a circuit block (23) by means of a 1 st male screw (60) and a 1 st female screw (55), the circuit block (23) is provided with a transmission terminal (75) electrically connected to a reception terminal (47b), and a ground terminal (74) provided so as to be able to be grounded, and the 1 st male screw (60) and the 1 st female screw (55) conduct metal members (33, 36, 39, 53, 54) and the ground terminal (74).
Description
Technical Field
The invention relates to a mechanism module, a movement, and a timepiece.
Background
An electronic timepiece includes a circuit board on which an IC such as an LSI is mounted inside an outer case. Since the IC may malfunction due to the influence of static electricity, countermeasures against static electricity are required. Such an antistatic shielding structure is disclosed in, for example, patent document 1: the movement includes a plastic base plate, an IC mounted on a circuit block disposed in the direction of the upper surface of the base plate, and a battery serving as a power source of the IC.
Patent document 1: japanese Kokai publication Hei-6-35994
However, as a movement of an analog electronic timepiece, there is a structure in which: the mechanism module including the motor and the gear train and the circuit block including the IC and mounted on the mechanism module are provided as separate components. In such a movement, when the mechanism module includes a component made of a non-metallic material such as a resin material, the mechanism module is easily electrified. Therefore, it is necessary to prevent the mechanism module from being charged with a simple structure and suppress the influence of static electricity on the IC of the circuit block mounted on the mechanism module.
Disclosure of Invention
Therefore, the present invention provides a mechanism module, a movement, and a timepiece, which can prevent electrification with a simple configuration.
A mechanism module according to the present invention is a mechanism module using a metal member for a part of the mechanism module, the mechanism module including: a gear train having a plurality of gears; a motor driving the wheel train; and a receiving terminal capable of receiving an electric signal for driving the motor from an external component, wherein the mechanism module is fixed to a substrate by means of a connecting member, the substrate is provided with a transmitting terminal electrically connected to the receiving terminal, and a ground terminal provided so as to be capable of being grounded, and the connecting member electrically connects the metal member and the ground terminal.
In the present invention, the mechanism module is fixed to a substrate provided with a transmission terminal electrically connected to a reception terminal capable of receiving an electric signal by a connection member. The connecting member connects the metal member of the mechanism module to a ground terminal of the substrate, which is provided to be able to be grounded. Therefore, according to the present invention, the fixing and grounding of the mechanism module with respect to the substrate can be simultaneously achieved. Therefore, electrification can be prevented with a simple structure.
In the above mechanism module, preferably, the mechanism module includes: an hour wheel provided with an hour hand; a second wheel provided with a minute hand; a fourth wheel provided with a second hand; a second clamp plate for holding the second wheel; and an hour wheel pressing member that presses the hour wheel, wherein at least any one of the hour wheel, the second wheel, the fourth wheel, the second bridge, and the hour wheel pressing member is the metal member.
According to the present invention, since a common timepiece component is a metal component, grounding of the mechanism module can be achieved without providing a separate metal component. Therefore, charging can be prevented with a simpler configuration.
In the mechanism module described above, it is preferable that the hour wheel pressing member is the metal member and is provided on a side opposite to the base plate with the wheel train interposed therebetween.
According to the present invention, since the hour wheel presser as the metal member is provided on the side opposite to the base plate via the gear train, the metal member to be grounded can be disposed in a wider range in the mechanism module. Therefore, charging can be more reliably prevented.
In the mechanism module described above, it is preferable that the mechanism module includes a base plate for supporting the train wheel and a train wheel support, and the base plate and the train wheel support are formed of a non-metallic material.
According to the present invention, since the mechanism module can be prevented from being charged as described above, the bottom plate and the train wheel support made of a non-metallic material can be prevented from being charged.
Further, since the base plate and the train wheel support are formed of a non-metal material, the weight of the mechanism module including the base plate and the train wheel support can be reduced as compared with a structure in which the base plate and the train wheel support are formed of a metal material. In addition, by forming the bottom plate and the train wheel support with a resin material that is a non-metallic material, the component cost can be reduced.
In the above mechanism module, preferably, 1 motor is provided.
According to the present invention, since 1 motor is provided, it is possible to form a mechanism module that can drive, for example, a needle of a timepiece display portion.
In the above mechanism module, it is preferable that a plurality of the motors are provided.
According to the present invention, since the plurality of motors are provided, it is possible to form a mechanism module capable of independently driving a plurality of hands such as an hour hand and a minute hand.
The movement of the present invention is characterized by including the mechanism module and the substrate.
According to the present invention, since the mechanism module capable of preventing electrification with a simple structure is provided, the movement in which malfunction due to static electricity is prevented can be provided at low cost.
The timepiece of the present invention is characterized by including the movement described above.
According to the present invention, since the timepiece includes the low-cost movement that prevents the malfunction due to static electricity, it is possible to provide a timepiece that can accurately display time at low cost.
According to the mechanism module of the present invention, electrification can be prevented with a simple structure.
Drawings
Fig. 1 is a plan view of a timepiece of the embodiment.
Fig. 2 is a sectional view of the timepiece of the embodiment.
Fig. 3 is a perspective view of the mechanism module of the embodiment viewed from the front side.
Fig. 4 is a plan view of the internal structure of the mechanism module of the embodiment as viewed from the front side.
Fig. 5 is an enlarged cross-sectional view of the timepiece in the vicinity of the mechanism module of the embodiment.
Fig. 6 is a perspective view of a coil block of the 1 st motor of the embodiment.
Fig. 7 is a plan view of the movement of the embodiment viewed from the front side.
Fig. 8 is a perspective view of the mechanism module and the relay board of the embodiment viewed from the front side.
Fig. 9 is a bottom view of the movement of the embodiment as viewed from the back side.
Fig. 10 is a plan view of the movement of modification 1 of the embodiment, as viewed from the front side.
Fig. 11 is a bottom view of the movement of modification 1 of the embodiment, as viewed from the back side.
Fig. 12 is a plan view of a movement according to modification 2 of the embodiment, as viewed from the front side.
Fig. 13 is a bottom view of the movement of modification 2 of the embodiment as viewed from the back side.
Description of the reference symbols
1: a timepiece; 10. 110, 210: a movement; 12: a hour hand; 13: needle separation; 14: a second hand; 21. 121, 221: a mechanism module; 23. 123, 223: circuit blocks (substrate, external components); 30: a wheel train; 33: hour wheel (metal component); 36: wheel number two (metal part); 39: wheel number four (metal part); 40A: 1 st motor (motor); 40B: a 2 nd motor (motor); 40C: a 3 rd motor (motor); 47 b: a receiving terminal; 51: a base plate; 52: a gear train support; 53: hour wheel pressing member (metal member); 54: no. two clamp plates (metal parts); 55: 1 st female screw (connecting member); 60: 1 st male screw (connecting member); 74: a ground terminal; 75: a transmission terminal; 140A, 140B, 240: a motor.
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 type will be described as an example of a timepiece.
[ embodiment ]
(watch)
In general, a mechanical body including a drive portion of a timepiece is referred to as a "movement". The state in which the dial and the hands are mounted on the movement and then put into the timepiece case to be formed into a finished product is referred to as a "finished product" of the timepiece. Of the two sides of the main plate constituting the timepiece board, the side on which the glass of the timepiece case is present, that is, the side on which the dial is present, is referred to as the "back side" of the movement. Of the two sides of the bottom plate, the side on which the case back cover of the timepiece case is present, that is, the side opposite to the dial, is referred to as the "front side" of the movement.
Fig. 1 is a plan view of a timepiece of the embodiment. Fig. 2 is a sectional view of the timepiece of the embodiment.
As shown in fig. 1 and 2, the finished timepiece 1 includes a movement 10, a dial 11, an hour hand 12, a minute hand 13, and a second hand 14 inside a timepiece case 4 including a case back 2 and a glass 3. The dial 11 has a scale or the like that displays at least information related to hours. The dial 11, hour hand 12, minute hand 13, and second hand 14 are configured to be visually confirmed through the glass 3. The housing back cover 2 is formed of a metal material.
As shown in fig. 1, in the side surface of the timepiece case 4, at a portion at 2 o 'clock and at a portion at 4 o' clock, buttons 15 are provided, respectively. The button 15 is used for time adjustment for adjusting the time indicated by the hour hand 12 and minute hand 13.
(movement)
As shown in fig. 2, the movement 10 is disposed on the front side of the dial 11 and on the back side of the case back 2. The movement 10 includes: a mechanism module 21 on which an hour hand 12, a minute hand 13, and a second hand 14 are mounted; a circuit block 23 (substrate, external component) disposed on the front side of the mechanism module 21 and controlling the driving of the mechanism module 21; an intermediate board 24 (see fig. 8) disposed between the mechanism module 21 and the circuit block 23; and a module frame 25 that holds the mechanism module 21 and the circuit block 23.
In the following description, the extending direction of the rotation axis O of the hour hand 12, minute hand 13, and second hand 14 is referred to as an axial direction, and the direction perpendicular to the axial direction and extending radially from the rotation axis O is referred to as a radial direction.
(mechanism module)
Fig. 3 is a perspective view of the mechanism module of the embodiment viewed from the front side. Fig. 4 is a plan view of the internal structure of the mechanism module of the embodiment as viewed from the front side. Figure 5 is an enlarged cross-sectional view of the cartridge of the embodiment. Fig. 4 shows a state in which the relay board 24 is disposed in the mechanism module 21.
As shown in fig. 3 to 5, the mechanism module 21 includes: a train 30 having a plurality of gears; a 1 st motor 40A, a 2 nd motor 40B, and a 3 rd motor 40C of the drive train 30; a bottom plate 51 and a train wheel support 52 supporting the train wheel 30; an hour wheel push (car push さえ)53 fixed to the bottom plate 51; and a second bridge 54 disposed between the base plate 51 and the train wheel support 52. In the mechanism module 21, a metal member made of a metal material is partially used.
As shown in fig. 3, the bottom plate 51 constitutes a substrate of the mechanism module 21. The bottom plate 51 is disposed on the front side in the axial direction of the dial 11 (see fig. 5). The bottom plate 51 is formed of a resin material as a non-metallic material in a plate shape with the axial direction as the thickness direction.
The gear train support 52 is disposed on the front side in the axial direction of the base plate 51. The gear train support 52 is formed of a resin material which is a non-metallic material in a plate shape with the axial direction being the thickness direction.
As shown in fig. 5, the hour wheel pressing piece 53 is provided on the opposite side of the circuit block 23 via the gear train 30, and is fixed to the back side in the axial direction of the bottom plate 51. The hour wheel presser 53 is formed of a metal material in a flat plate shape with the axial direction as the thickness direction. The hour wheel presser 53 is disposed on the front side of the end portion on the back side of the bottom plate 51, and is disposed apart from the dial 11.
The second clamping plate 54 is formed of a metal material in a flat plate shape with the axial direction as the thickness direction. A through hole 54a penetrating in the axial direction is formed in the second clamp plate 54. A cylindrical 1 st female screw 55 (connection member) is inserted through the through hole 54 a. The 1 st female screw 55 is formed of a metal material. The 1 st female screw 55 penetrates the base plate 51 from the back surface side toward the front surface side, and protrudes from the base plate 51 toward the front surface side. The 1 st female screw 55 is in contact with the inner peripheral surface of the through hole 54a of the second clamp plate 54. Thereby, the second clamping plate 54 and the 1 st female screw 55 are conducted.
As shown in fig. 3 and 4, the 1 st motor 40A, the 2 nd motor 40B, and the 3 rd motor 40C are disposed in parallel around the rotation axis O on the front side of the outer edge portion of the base plate 51. Since the motors 40A to 40C are formed identically, the following description of the structure of the motors 40A to 40C will be given by taking the 1 st motor 40A as an example, and the same structure as the motors 40A to 40C will be given the same reference numerals and will not be described in detail.
Fig. 6 is a perspective view of a coil block of the 1 st motor of the embodiment.
As shown in fig. 4 and 6, the 1 st motor 40A includes: a coil block 41 including a coil wire 43 wound around a core 42; a stator 44 configured to be in contact with both end portions of the magnetic core 42 of the coil block 41; and a rotor 45 disposed in the rotor hole 44a of the stator 44.
As shown in fig. 6, the coil block 41 includes: a magnetic core 42 and a coil wire 43; and a coil lead substrate 46 fixed to one end of the core 42.
As shown in fig. 4, the magnetic core 42 extends in a direction perpendicular to the axial direction and the radial direction. The core 42 is fixed to the base plate 51 by screws 56, wherein the screws 56 are inserted into through holes 42a (see fig. 6), and the through holes 42a are formed at both ends of the core 42.
As shown in fig. 3 and 6, the coil lead substrate 46 is a printed substrate. The coil lead substrate 46 is disposed on the front side of one end portion of the magnetic core 42, and is fastened to the magnetic core 42 with a screw 56. The coil lead substrate 46 extends from a fixing portion at one end portion with respect to the magnetic core 42 toward a central portion of the bottom plate 51 when viewed from the axial direction. A pin insertion hole 46a is formed in a substantially central portion of the coil lead substrate 46, and a pin 51a provided upright from the bottom plate 51 toward the front surface side is inserted into the pin insertion hole 46 a. A through hole 46c through which the cylindrical 2 nd female screw 57 is inserted is formed in the radially inner end portion 46b of the coil lead substrate 46. The 2 nd female screw 57 penetrates the base plate 51 from the back surface side toward the front surface side, and protrudes from the base plate 51 toward the front surface side.
As shown in fig. 6, a pair of wires 47 is formed on the front surface of the coil lead substrate 46. Each wire 47 extends along the extending direction of the coil lead substrate 46. A solder terminal 47a is formed at one end of each wire 47 on the core 42 side, and the end of the coil lead 43 is soldered to each solder terminal 47 a. A reception terminal 47b is formed at the other end portion of each wire 47 on the inner side in the radial direction, and the reception terminal 47b receives an electric signal for driving the 1 st motor 40A. The receiving terminals 47b of the motors 40A to 40C are arranged at the same position in the axial direction.
As shown in fig. 4, the stator 44 is disposed radially inward of the core 42. The stator 44 is fastened to the magnetic core 42 by means of screws 56.
The rotor 45 is rotatably supported by a base plate 51 and a train wheel support 52 (see fig. 3).
The train 30 includes: a 1 st train 30A that transmits the driving force of the 1 st motor 40A; a 2 nd train 30B that transmits the driving force of the 2 nd motor 40B; and a 3 rd train 30C transmitting a driving force of the 3 rd motor 40C.
The 1 st train 30A has a 1 st intermediate wheel 31, a 2 nd intermediate wheel 32, and an hour wheel 33. The intermediate wheel 31 in the 1 st stage is formed of, for example, a resin material. The 1 st intermediate wheel 31 has a 1 st intermediate gear 31a and a 1 st intermediate pinion (not shown), and is rotatably supported by a base plate 51 and a train wheel support 52. The 1 st intermediate gear 31a meshes with the pinion of the rotor 45 of the 1 st motor 40A. The intermediate wheel 32 in the 2 nd case is formed of, for example, a resin material. The 2 nd intermediate wheel 32 has a 2 nd intermediate gear 32a and a 2 nd intermediate pinion (not shown), and is rotatably supported by a base plate 51 and a train wheel support 52. The 2 nd intermediate gear 32a meshes with the 1 st intermediate pinion of the 1 st intermediate gear 31.
The hour wheel 33 is formed of a metal material. As shown in fig. 5, the hour wheel 33 is rotatably inserted around a center pipe 62 on the back surface side of the bottom plate 51. The center tube 62 is held by the bottom plate 51. The center pipe 62 extends coaxially with the rotation axis O and protrudes from the bottom plate 51 toward the rear surface side. The center pipe 62 is formed of a metal material and is in communication with the hour wheel 33. The hour wheel 33 has an hour gear 33a that meshes with the 2 nd intermediate pinion of the 2 nd intermediate wheel 32 (see fig. 4). The hour wheel 33 is pressed by the hour wheel pressing piece 53. The hour wheel 33 is biased toward the bottom plate 51 (toward the front side in the axial direction) by a 1 st dial washer 63 disposed between the hour wheel presser 53 and the hour gear 33 a. The 1 st dial washer 63 is formed of a metal material. Thereby, the hour wheel 33 and the hour wheel presser 53 are conducted through the 1 st dial washer 63. An hour hand 12 is attached to an end portion on the back side of the hour wheel 33.
As shown in fig. 4, the 2 nd train 30B includes a 1 st second intermediate wheel 34, a 2 nd second intermediate wheel 35, and a second wheel 36. The No. 1 second intermediate wheel 34 is formed of, for example, a resin material. The No. 1 second intermediate wheel 34 has a No. 1 second intermediate gear 34a and a No. 1 second intermediate pinion 34b, and is rotatably supported by a bottom plate 51 and a train wheel support 52 (see fig. 3). The 1 st second intermediate gear 34a meshes with a pinion of the rotor 45 of the 2 nd motor 40B. The No. 2 second intermediate wheel 35 is formed of, for example, a resin material. The No. 2 second intermediate wheel 35 has a No. 2 second intermediate gear 35a and a No. 2 second intermediate pinion (not shown), and is rotatably supported by a bottom plate 51 and a train wheel support 52. The No. 2 second intermediate gear 35a meshes with the No. 1 second intermediate pinion 34b of the No. 1 second intermediate gear 34.
The second wheel 36 is formed of a metallic material. As shown in fig. 5, the second wheel 36 is inserted into the center tube 62 from the front side in the axial direction so as to be rotatable, and is in communication with the center tube 62. The front end of the second wheel 36 is supported by a second clamp plate 54. The second gear 36 has a second gear 36a that meshes with a second 2 intermediate pinion of the second 2 intermediate wheel 35 (see fig. 4). The second gear 36 is biased toward the rear side in the axial direction by a 2 nd dial washer 64 disposed between the second bridge 54 and the second gear 36a, and is in contact with the front side opening end of the center tube 62. The 2 nd dial washer 64 is formed of a metal material. Thus, the second wheel 36 and the second bridge 54 are conducted through the 2 nd dial washer 64. A minute hand 13 is attached to the end portion of the second wheel 36 on the rear side.
As shown in fig. 4, the 3 rd train 30C has a sixth wheel 37, a fifth wheel 38, and a fourth wheel 39. The sixth wheel 37 is formed of a resin material, for example. The sixth wheel 37 includes a sixth gear 37a and a sixth pinion 37b, and is rotatably supported by a base plate 51 and a train wheel support 52 (see fig. 3). The sixth gear 37a meshes with a pinion of the rotor 45 of the 3 rd motor 40C. The fifth wheel 38 is formed of, for example, a resin material. The fifth wheel 38 has a fifth gear 38a, and is rotatably supported by a base plate 51 and a train wheel support 52. The fifth gear 38a meshes with the sixth pinion 37b of the sixth gear 37.
The fourth wheel 39 is formed of a metal material. As shown in fig. 5, the fourth wheel 39 is disposed on the same axis as the rotation axis O. The fourth gear 39 has a gear shaft 39a and a fourth gear 39b fixed to the gear shaft 39 a. The gear shaft 39a is inserted through the inside of the second wheel 36 in a rotatable manner. Thereby, the fourth wheel 39 is conducted to the second wheel 36. The end portion of the fourth wheel 39 on the front surface side is pivotally supported by a tenon frame 52a, and the tenon frame 52a is provided to the train wheel support 52. A second hand 14 is attached to an end portion of the gear shaft 39a on the back surface side. The fourth gear 39b is disposed on the front surface side in the axial direction of the second clamp plate 54. The fourth gear 39b meshes with a fifth gear 38a (see fig. 4) of the fifth gear 38. The fourth gear 39 is biased toward the back side in the axial direction by a 3 rd dial washer 65 disposed between the train wheel support 52 and the fourth gear 39 b. The 3 rd dial washer 65 is formed of a metal material.
Here, the wheel train support 52 will be described in detail. As shown in fig. 3, the train wheel support 52 has: a main body portion 58; and a plurality of (4 in the present embodiment) mounting arm portions 59 projecting from the main body portion 58. The main body portion 58 is formed in a shape that avoids the coil block 41 and the coil lead substrate 46 of each of the motors 40A to 40C when viewed from the axial direction. The body portion 58 protrudes toward the front side in the axial direction from the receiving terminals 47b of the motors 40A to 40C. The main body portion 58 is formed with a through hole 58a (see fig. 5) coaxial with the through hole 54a of the second clamp plate 54.
The plurality of mounting arm portions 59 are fastened by screws 56 that fix the cores 42 of the motors 40A to 40C. Specifically, in the present embodiment, the plurality of mounting arm portions 59 are fastened by the following screws: a pair of screws 56 that fix the core 42 of the 1 st motor 40A; a screw 56 that fastens the coil lead substrate 46, of the screws 56 that fix the core 42 of the 2 nd motor 40B; and a screw 56 that fastens the coil lead substrate 46, among screws 56 that fix the core 42 of the 3 rd motor 40C.
(Circuit Block)
As shown in fig. 2, the circuit block 23 mainly has: a substrate main body 71 as a printed substrate; and an IC72 and a crystal unit 73 mounted on the substrate main body 71.
Fig. 7 is a plan view of the movement of the embodiment viewed from the front side.
As shown in fig. 7, the substrate main body 71 is formed in a circular shape when viewed from the axial direction. The substrate main body 71 is formed with: a 1 st screw insertion hole 71a through which the 1 st male screw 60 (connection member) screwed with the 1 st female screw 55 is inserted; and 32 nd screw insertion holes 71b through which the 2 nd male screws 61 screwed with the 32 nd female screws 57 are inserted, respectively (see fig. 5).
A ground terminal 74 is formed on the front surface of the substrate main body 71. The ground terminal 74 is formed of, for example, a printed wiring, and is formed on an opening edge of the 1 st screw insertion hole 71 a. The ground terminal 74 is electrically connected to the housing back cover 2 (see fig. 2), and is provided so as to be able to be grounded by being connected to an arm or the like through the housing back cover 2.
On the back surface of the substrate main body 71, 3 transmission terminals 75 are formed. The transmission terminals 75 of each system are formed by, for example, printed wiring, and are formed around the 2 nd screw insertion hole 71b, respectively. The transmission terminal 75 of each system is electrically connected to the reception terminal 47b of each of the motors 40A to 40C via the relay board 24 (see fig. 5). The transmission terminal 75 transmits an electric signal for driving each of the motors 40A to 40C to the reception terminal 47 b.
As shown in fig. 2, IC72 is made of, for example, CMOS or PLA. The IC72 generates an electric signal for driving each of the motors 40A to 40C. The crystal unit 73 has a crystal transducer therein which oscillates at a predetermined frequency, and is connected to the IC 72. When viewed from the axial direction, the IC72 and the crystal unit 73 are arranged radially outward of the mechanism module 21.
A battery holder 26 is disposed on the front side of the circuit block 23. The battery holder 26 is formed to be able to hold a battery 27. The positive electrode of the battery 27 held by the battery holder 26 is electrically connected to the ground terminal 74 (see fig. 7) of the circuit block 23.
(Relay board)
Fig. 8 is a perspective view of the mechanism module and the relay board of the embodiment viewed from the front side.
As shown in fig. 3 and 8, 3 relay boards 24 are disposed between the bottom plate 51 of the mechanism module 21 and the board main body 71 (see fig. 5) of the circuit block 23. Specifically, each relay board 24 is disposed on the coil lead board 46 of each motor 40A to 40C. Each relay substrate 24 is formed to overlap a portion extending from the central portion to the end portion 46b on the coil lead substrate 46 of each motor 40A to 40C when viewed from the axial direction. The thickness of each relay board 24 in the axial direction is equal to the distance between the receiving terminal 47b of each motor 40A to 40C and the end portion of the gear train support 52 on the axial front side.
A pair of relay wirings 28 are formed on each relay substrate 24. The pair of relay wirings 28 pass through holes penetrating the relay substrate 24 in the axial direction from the back surface of the relay substrate 24, and continuously communicate with the front surface of the relay substrate 24. The pair of relay wires 28 are in contact with the receiving terminals 47b of the motors 40A to 40C on the back surface of the relay board 24, and in contact with the transmitting terminals 75 (see fig. 5) of the board main body 71 on the front surface of the relay board 24. Thereby, the relay board 24 electrically connects the receiving terminal 47b of the coil lead board 46 and the transmitting terminal 75 of the board main body 71.
Each relay substrate 24 has: the 1 st through hole 24a for disposing the pin 51a of the bottom plate 51; and a 2 nd through hole 24b in which the 2 nd female screw 57 is disposed. The pins 51a of the bottom plate 51 are inserted into the 1 st through hole 24a, and the 2 nd female screws 57 are inserted into the 2 nd through holes 24b, whereby the relay substrates 24 can be positioned.
As shown in fig. 5, the mechanism module 21 and the circuit block 23 are fixed to each other by screwing the 1 st male screw 60 formed of a metal material to the 1 st female screw 55 and screwing the 32 nd male screws 61 to the 2 nd female screws 57, respectively. Specifically, the 1 st pin 60 is inserted into the 1 st pin insertion hole 71a of the base plate body 71 from the front side, and screwed to the 1 st pin 55. At this time, the head of the 1 st male screw 60 is in contact with the ground terminal 74 formed on the board main body 71. Thereby, the ground terminal 74 is electrically connected to the second clamping plate 54 through the 1 st male screw 60 and the 1 st female screw 55. The 2 nd male screws 61 are inserted into the 2 nd screw insertion holes 71b of the base plate body 71 from the front side and screwed to the 2 nd female screws 57. Thereby, the 2 nd male screw 61 and the 2 nd female screw 57 sandwich the relay substrate 24 between each coil lead substrate 46 and the substrate main body 71.
(Module frame)
Fig. 9 is a bottom view of the movement of the embodiment as viewed from the back side.
As shown in fig. 2 and 9, the module frame 25 is formed of a resin material into a disk shape having substantially the same diameter as the circuit block 23. The thickness of the module frame 25 in the axial direction coincides with the thickness of the mechanism module 21 in the axial direction. The circuit block 23 to which the structural module 21 is fixed is attached to the module frame 25 from the front side. The module frame 25 is fixed to the dial 11 from the back side.
The module frame 25 is formed with a module arrangement hole 25a and an element arrangement recess 25 b. The module arrangement hole 25a axially penetrates through a central portion of the module frame 25. The module arrangement hole 25a is formed in a shape corresponding to the mechanism module 21 when viewed from the axial direction. The mechanism module 21 is disposed in the module disposition hole 25 a. The element arrangement recess 25b is recessed from the front surface toward the rear surface of the module frame 25 around the module arrangement hole 25 a. The element placement recess 25b is formed to avoid contact with the elements such as the IC72 and the crystal cell 73 of the circuit block 23.
In the movement 10 configured as described above, the configuration is such that: the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39 of the mechanism module 21 are provided as metal members formed of a metal material and are in conduction with each other. In addition, the second clamping plate 54 is electrically connected to the ground terminal 74 of the circuit block 23 via the 1 st male screw 60 and the 1 st female screw 55. Since the ground terminal 74 is electrically connected to the housing back cover 2, it can be connected to an arm or the like through the housing back cover 2 and grounded. Accordingly, the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39 can be connected to an arm or the like and grounded, and therefore, static electricity charged to the mechanism module 21 having a member (the bottom plate 51, the gear train wheel support 52, or the like) made of a non-metallic material can be flowed to the arm or the like.
In this way, in the present embodiment, the mechanism module 21 is fixed to the circuit block 23 by the 1 st female screw 55 and the 1 st male screw 60. The 1 st female screw 55 and the 1 st male screw 60 conduct the metal members (the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39) of the mechanism module 21 and the ground terminal 74 of the circuit block 23, which is provided so as to be able to be grounded. Therefore, the fixing of the mechanism module 21 with respect to the circuit block 23 and the grounding can be simultaneously achieved. Therefore, the mechanism module 21 can be prevented from being charged with a simple configuration.
Further, since the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39, which are common timepiece components, are metal components, grounding of the mechanism module 21 can be achieved without providing a separate metal component. Therefore, the mechanism module 21 can be prevented from being charged with a simpler configuration.
Further, since the hour wheel presser 53 as a metal member is provided on the opposite side of the circuit block 23 with the gear train 30 interposed therebetween, the metal member to be grounded can be disposed in a wider range in the mechanism module 21. Therefore, the mechanism module 21 can be more reliably prevented from being charged.
Further, according to the present embodiment, since the mechanism module 21 can be prevented from being electrified as described above, the bottom plate 51 and the train wheel support 52 formed of a non-metallic material can be prevented from being electrified.
Further, since the base plate 51 and the gear train support 52 are formed of a non-metal material, the weight of the mechanism module 21 including the base plate 51 and the gear train support 52 can be reduced as compared with a structure in which the base plate and the gear train support are formed of a metal material. In addition, by forming the bottom plate 51 and the train wheel support 52 with a resin material that is a non-metallic material, the component cost can be reduced.
Further, since the mechanism module 21 includes a plurality of (3 in the present embodiment) motors 40A to 40C, the mechanism module 21 can be formed to be capable of independently driving a plurality of the hour hand 12, the minute hand 13, and the second hand 14.
The movement 10 of the present embodiment includes a mechanism module 21 that can prevent electrification with a simple configuration. Therefore, the movement 10 can be provided at low cost: which prevents malfunction of the IC72 of the circuit block 23 due to static electricity.
The timepiece 1 of the present embodiment includes a low-cost movement 10, and the movement 10 prevents malfunction of the IC72 due to static electricity. Therefore, the timepiece 1 that can accurately display the time can be provided at low cost.
[ 1 st modification of embodiment ]
Fig. 10 is a plan view of the movement of modification 1 of the embodiment, as viewed from the front side. Fig. 11 is a bottom view of the movement of modification 1 of the embodiment, as viewed from the back side.
In the embodiment shown in fig. 3, the mechanism module 21 includes 3 motors 40A to 40C. In contrast, the embodiment 1 shown in fig. 10 and 11 differs from the embodiment in that the mechanism module 121 includes 2 motors 140A and 140B. The same components as those of the embodiment shown in fig. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted (the same applies to the following modified examples).
As shown in fig. 10 and 11, the movement 110 includes: a mechanism module 121; a circuit block 123 (substrate, external component) disposed on the front side of the mechanism module 121 and configured to control driving of the mechanism module 121; a relay board (not shown) disposed between the mechanism module 121 and the circuit block 123; and a module frame 125 that holds the mechanism module 121 and the circuit block 123. The mechanism module 121 includes 2 motors 140A and 140B. The motors 140A and 140B are formed in the same manner as the motors 40A to 40C according to the embodiment.
As in the fixing of the mechanism module 21 and the circuit block 23 in the embodiment, the mechanism module 121 and the circuit block 123 are fixed together by screwing the 1 st male screw 60 to the 1 st female screw (not shown) and screwing the pair of 2 nd male screws 61 to the 2 nd female screws (not shown), respectively. The head of the 1 st male screw 60 is in contact with the ground terminal 74 formed on the substrate main body 171 of the circuit block 123. As a result, as in the embodiment, the metal member of the mechanism module 121 can be electrically connected to the ground terminal 74, and the metal member of the mechanism module 121 can be grounded.
Further, since the mechanism module 121 includes a plurality of (2 in the present modification) motors 140A and 140B, the mechanism module 121 can be formed so as to be capable of independently driving, for example, the hour hand 12 and the minute hand 13.
[ 2 nd modification of embodiment ]
Fig. 12 is a plan view of a movement according to modification 2 of the embodiment, as viewed from the front side. Fig. 13 is a bottom view of the movement of modification 2 of the embodiment as viewed from the back side.
In the embodiment shown in fig. 7 and 9, the movement 10 includes 1 mechanism module 21. In contrast, the embodiment of modification 2 shown in fig. 12 and 13 differs from the embodiment in that the movement 210 includes 2 mechanism modules 21 and 221.
As shown in fig. 12 and 13, the movement 210 includes: the mechanism modules 21, 221; a circuit block 223 (substrate, external component) disposed on the front side of the mechanism modules 21 and 221, and configured to control driving of the mechanism modules 21 and 221; an intermediate board (not shown) disposed between the mechanism modules 21 and 221 and the circuit block 223; and a module frame 225 that holds the mechanism modules 21, 221 and the circuit block 223. The mechanism module 221 includes a motor 240. The motor 240 is formed in the same manner as the motors 40A to 40C according to the embodiment.
Similarly to the fixing of the mechanism module 21 and the circuit block 23 in the embodiment, the mechanism module 21 and the circuit block 223 are fixed together by screwing the 1 st male screw 60 to the 1 st female screw (not shown) and screwing the 32 nd male screws 61 to the 2 nd female screws (not shown), respectively. Similarly to the fixing of the mechanism module 21 and the circuit block 23 in the embodiment, the mechanism module 221 and the circuit block 223 are fixed together by screwing the 1 st male screw 60 to the 1 st female screw (not shown) and screwing the 2 nd male screw 61 to the 2 nd female screw (not shown). The head of each 1 st male screw 60 is in contact with a ground terminal 74 formed on the substrate main body 271 of the circuit block 223. This allows the metal members of the mechanism modules 21 and 221 to be electrically connected to the ground terminal 74, and allows the metal members of the mechanism modules 21 and 221 to be grounded.
Further, since the mechanism module 221 includes 1 motor 240, the mechanism module 221 capable of driving, for example, a needle of a timepiece display unit can be formed.
The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, in the above-described embodiment, the example in which the present invention is applied to an analog quartz type timepiece has been described, but the present invention may be applied to a combination quartz type timepiece having an analog display and a digital display.
In the above embodiment, the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39 of the mechanism module 21 are provided as metal members that are electrically connected to the ground terminal 74, but the present invention is not limited thereto. The above-described operational effects can be achieved if at least one of the hour wheel presser 53, the second bridge 54, the hour wheel 33, the second wheel 36, and the fourth wheel 39 is a metal member that is electrically connected to the ground terminal 74.
In the above embodiment, the 1 st male screw 60 and the 1 st female screw 55 are used as the connecting member for fixing the mechanism block 21 and the circuit block 23 together and electrically connecting the ground terminal 74 and the metal member of the mechanism block 21, but the present invention is not limited thereto. The connecting member may be, for example, a rivet or a pin.
In the above embodiments, the mechanism module 21 having 3 motors 40A to 40C and the mechanism module 121 having 2 motors 140A and 140B have been described as an example of the mechanism module having a plurality of motors. However, the number of motors included in the mechanism module is not limited, and 4 or more motors may be included.
In addition, the components in the above embodiments may be replaced with known components as appropriate without departing from the scope of the present invention.
Claims (8)
1. A mechanism module is characterized in that a mechanism module is provided,
a metal part is used for a part of the mechanism module,
the mechanism module includes:
a gear train having a plurality of gears;
a motor driving the wheel train; and
a receiving terminal capable of receiving an electric signal for driving the motor from an external component,
the mechanism module is fixed to a substrate provided with a transmission terminal electrically connected to the reception terminal and a ground terminal provided so as to be able to be grounded by means of a connection member that conducts the metal member and the ground terminal,
an hour wheel pressing member for pressing an hour wheel having an hour hand attached thereto, the hour wheel pressing member being the metal member, and the ground terminal being conductive,
the ground terminal and the battery belong to a circuit block and are conductive.
2. Mechanism module according to claim 1,
the mechanism module includes:
a second wheel provided with a minute hand;
a fourth wheel provided with a second hand; and
a second clamp plate for holding the second wheel,
the second wheel, the fourth wheel and the second clamping plate are the metal parts.
3. Mechanism module according to claim 2,
the hour wheel pressing piece is arranged on the side opposite to the base plate through the gear train.
4. Mechanism module according to any one of claims 1 to 3,
the mechanism module is provided with a base plate for supporting the wheel train and a wheel train support,
the base plate and the train wheel support are formed of a non-metallic material.
5. Mechanism module according to any one of claims 1 to 3,
the mechanism module is provided with 1 motor.
6. Mechanism module according to any one of claims 1 to 3,
the mechanism module is provided with a plurality of motors.
7. A machine core is characterized in that a machine core is provided,
the movement is provided with:
the mechanism module of any one of claims 1 to 6; and
the substrate.
8. A timepiece, characterized in that it comprises, in a case,
the timepiece is provided with the movement of claim 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016140014A JP6825838B2 (en) | 2016-07-15 | 2016-07-15 | Mechanism modules, movements and watches |
| JP2016-140014 | 2016-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107621775A CN107621775A (en) | 2018-01-23 |
| CN107621775B true CN107621775B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710506542.XA Active CN107621775B (en) | 2016-07-15 | 2017-06-28 | Mechanism module, movement, and timepiece |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6825838B2 (en) |
| CN (1) | CN107621775B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7167672B2 (en) * | 2018-02-06 | 2022-11-09 | セイコーエプソン株式会社 | movements and watches |
| CN110119079B (en) * | 2018-02-06 | 2022-03-04 | 精工爱普生株式会社 | Movement and timepiece |
| JP7102778B2 (en) * | 2018-02-27 | 2022-07-20 | セイコーエプソン株式会社 | Watch movements and watches |
| JP7130982B2 (en) * | 2018-02-27 | 2022-09-06 | セイコーエプソン株式会社 | Watch movements and watches |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4426159A (en) * | 1979-12-06 | 1984-01-17 | Casio Computer Co., Ltd. | Electronic time keeping device |
| JPH10160865A (en) * | 1996-12-03 | 1998-06-19 | Seiko Instr Inc | Electronic apparatus |
| JP3571942B2 (en) * | 1998-11-30 | 2004-09-29 | セイコーインスツルメンツ株式会社 | Electronic clock |
| JP2001099960A (en) * | 1999-09-30 | 2001-04-13 | Citizen Watch Co Ltd | Structure of electronic timepiece |
| JP4021218B2 (en) * | 2001-04-24 | 2007-12-12 | セイコーエプソン株式会社 | Electronic clock |
| WO2003054636A1 (en) * | 2001-12-21 | 2003-07-03 | Kitagawa Industries Co., Ltd. | Timepiece including base plate formed of resin and wheel train |
| WO2004021091A1 (en) * | 2002-08-30 | 2004-03-11 | Seiko Epson Corporation | Analog electronic timepiece |
| JP2006184237A (en) * | 2004-12-28 | 2006-07-13 | Seiko Instruments Inc | Battery electrode terminal member and electronic timepiece with same |
| JP5912763B2 (en) * | 2012-03-29 | 2016-04-27 | シチズンホールディングス株式会社 | Clock with communication function |
| JP2016118404A (en) * | 2014-12-18 | 2016-06-30 | セイコーエプソン株式会社 | Watch with solar cell |
-
2016
- 2016-07-15 JP JP2016140014A patent/JP6825838B2/en active Active
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2017
- 2017-06-28 CN CN201710506542.XA patent/CN107621775B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018009914A (en) | 2018-01-18 |
| JP6825838B2 (en) | 2021-02-03 |
| CN107621775A (en) | 2018-01-23 |
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