JP2007121075A - Multi-hands watch and standard time radio-controlled multi-hands watch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-hands watch excellent in assembling workability and capable of thinning the whole watch without separating a circuit substrate. <P>SOLUTION: The gear train block 6 having a chronographic function is constituted with a plurality sets of gear trains 15-18 arranged in a plane, therefore the thickness of the gear train block 6 can be made thin, and also the plurality sets of gear trains 15-18 can be planarly assembled, thereby the assembling workability can be improved. Furthermore, the gear train block 6 is arranged while being superposed on the circuit substrate 7, which is not necessary to be pluralized, and a sheet of circuit substrate 7 can be simply assembled on the gear train block 6, thereby the assembling workability can be improved, furthermore in the thickness range of the gear train block 6 superposed on the circuit substrate 7, the antenna 8 and the battery 9 are arranged on both the side parts of them. Therefore, the antenna 8 and the battery 9 can be assembled compactly and also the thickness of whole the watch can be made thin. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a multi-hand timepiece having a chronograph function for measuring time and a standard time radio wave receiving type multi-hand timepiece.

Conventionally, in a multi-hand timepiece having a chronograph function, as described in Patent Document 1, a train wheel block is divided into a time train wheel train and a chronograph train train, and the time train train is divided into a main plate and By arranging the chronograph train wheel between the train wheel bridge and the chronograph bridge, a two-layer structure in which the train wheel blocks are stacked vertically is formed. It has a configuration in which a train wheel for automatic winding as a power source is further stacked on the train block.
JP-A-11-295448

  However, in such a conventional multi-hand timepiece, the time series train wheel train, the chronograph train wheel train, and the self-winding power train wheel train are sequentially laminated. First, the time train wheel is assembled, then the chronograph train wheel is assembled to the time train wheel, and then the automatic power train wheel train must be assembled. There is a problem that is bad. In particular, in such a multi-hand timepiece, when a circuit board is incorporated, the circuit board cannot be efficiently incorporated in a space unless the circuit board is divided into a plurality of parts. There is also a problem that the work becomes complicated.

  The problem to be solved by the present invention is to provide a multi-hand timepiece and a standard time radio wave reception type multi-hand timepiece that do not divide the circuit board, have good assembling workability, and can reduce the thickness of the entire timepiece. is there.

In order to solve the above problems, the present invention includes the following components.
In addition, the reference numerals of the drawings attached to the respective components described in the section of the embodiment described later are attached to the respective components together with parentheses.

  As shown in FIGS. 1 to 22, the invention described in claim 1 is a plurality of sets of wheel trains (three-needle train wheel 15, two-needle train wheel 16, second-hand train wheel train) each moving a plurality of hands. 17, a train wheel block (6) having a chronograph function in which a train wheel train 18) is arranged in a plane, and a circuit board (7) for driving the train wheel block are arranged to overlap, An antenna (8) and a battery (9) are respectively arranged on the side portions of the train wheel block and the circuit board within a thickness range in which the train wheel block and the circuit board are overlapped. It is a multi-hand clock.

  In the invention according to claim 2, as shown in FIGS. 1 to 22, the train wheel block (6) has three hands of a second hand (15a), a minute hand (15b) and an hour hand (15c) on the same axis. A 3-needle wheel train (15) that is arranged and moved by the first and second pulse motors (21, 22), and the second hand of the minute hand (16a) and the hour hand (16b) are arranged on the same axis, and the third A two-needle train wheel (16) that moves with a pulse motor (23), a second hand train wheel (17) that moves only the second hand (17a) with a fourth pulse motor (24), and a date wheel (26) The multi-hand timepiece according to claim 1, further comprising a date wheel train (18) rotated by a 5-pulse motor (25).

  The invention according to claim 3 is, as shown in FIGS. 1 to 22, the three-needle train wheel (15), the two-needle train wheel (16), the second hand train wheel (17), and the The multi-hand timepiece according to claim 2, wherein the date wheel train (18) is assembled to the main plate (19) and the train wheel bridge (20).

  As shown in FIGS. 1 to 9, the date wheel (26) of the date wheel train (18) is disposed on the surface side along the outer peripheral portion of the main plate (19). The antenna (8) and a part of the battery (9) overlap each other at a position different from each other in the plane direction. The multi-hand timepiece described in 1.

  In the invention according to claim 5, as shown in FIGS. 1 to 12, the three-needle train wheel (15) transmits an even number of gears (first gears) for transmitting the rotation of the date wheel (35). 1 and a second intermediate wheel 42, 43), and a 24-hour hand wheel (37) that transmits the rotation of the date wheel and the 24-hour hand (15d) by this gear train. It is provided, It is a multi-hand timepiece in any one of Claims 2-4 characterized by the above-mentioned.

  As shown in FIGS. 1 to 12, the gear train (41) and the 24-hour hand wheel (37) of the 3-needle train wheel (15) are connected to the main plate (19). The multi-hand timepiece according to claim 5, wherein a part of the battery (9) is arranged so as to overlap the gear train and the 24-hour hand wheel.

  As shown in FIGS. 11 and 12, the invention described in claim 7 is a second hand wheel of the three-wheel train wheel (15) between the main plate (19) and the train wheel bridge (20). An intermediate receiver (38) for supporting a certain fourth wheel (31) is arranged, and a tubular holding cylinder (39) into which the second hand shaft (31a) of the fourth wheel is rotatably inserted in the intermediate receiver. The holding cylinder is rotatably inserted into the cylindrical minute hand shaft (34a) of the second wheel (34) which is the minute hand wheel of the three-needle train wheel, and the minute hand shaft is rotatably held. The multi-hand timepiece according to any one of claims 3 to 6, wherein:

  As shown in FIGS. 11 and 12, when the second wheel (34) of the three-needle wheel train (15) is assembled to the main plate (19), the invention described in claim 8 is 8. The multi-hand timepiece according to claim 7, wherein a rough position restricting portion (gear restricting portion 19a, kana restricting portion 19b) for roughly restricting the position of the center wheel & pinion is provided.

  In the invention according to claim 9, as shown in FIG. 12, the rough position restricting portion restricts the outer periphery of the large-diameter gear portion in the second wheel & pinion (34) with a predetermined gap. The multi-hand timepiece according to claim 8, which is 19a).

  In the invention according to claim 10, as shown in FIGS. 11 and 12, the rough position restricting portion restricts the outer periphery of the cylindrical pinion in the second wheel & pinion (34) with a predetermined gap ( The multi-hand timepiece according to claim 8, which is 19b).

  According to an eleventh aspect of the present invention, as shown in FIG. 12, a support shaft (40) for rotatably supporting the date wheel (35) of the three-needle wheel train (15) is provided with the intermediate receiving wheel. (38) is inserted into the mounting hole (38a), and in this state, the head (40a) of the support shaft is substantially perpendicular to the intermediate receiver by the shaft pressing portion (20a) provided on the train wheel bridge (20). The multi-hand timepiece according to any one of claims 3 to 10, wherein the position of the multi-hand timepiece is restricted.

  In the invention according to claim 12, as shown in FIGS. 13 and 14, the date wheel train wheel (18) presses the date wheel (26) against the main plate (19). ) And a fixing screw (56) for fixing the date indicator pressing plate to the main plate, the fixing screw having a head portion (57) mounted in an inverted conical shape provided on the date indicator pressing plate. It comprises an inverted conical plate portion (57a) disposed in the hole (55b) and a disc portion (57b) that comes into contact with the base plate, and the screw portion (58) of the fixing screw is a screw hole of the base plate. (60a), when the outer peripheral surface of the inverted conical plate portion is in contact with the inner peripheral surface of the inverted conical mounting hole of the date wheel pressing plate, the disc portion is The abutment plate is fixed in contact with the main plate, whereby the date indicator pressing plate is fixed to the main plate. It is a multi-needle watch according to any Re.

  As shown in FIGS. 1 to 22, the invention described in claim 13 includes a plurality of sets of wheel trains (three-wheel train wheel 15, two-needle train wheel 16, second-hand train wheel train) that respectively move a plurality of hands. 17, a train wheel block (6) having a chronograph function in which the train wheel trains 18) are arranged in a plane, and a circuit board disposed on the train wheel block in order to drive the train wheel block (7) and a standard time radio wave receiving antenna (8) disposed on a side portion of the train wheel block and the circuit board within a thickness range in which the train wheel block and the circuit board are overlapped with each other. A battery (9) disposed on another side portion different from the side portion on which the antenna is disposed within a thickness range in which the train wheel block and the circuit board are overlapped with each other. This is a standard time radio wave reception type multi-hand timepiece.

  According to the invention described in claim 1 and claim 13, the train wheel block having a chronograph function has a configuration in which a plurality of train trains each moving a plurality of hands are arranged in a plane, Since the thickness of the row block can be reduced and a plurality of sets of wheel trains can be assembled in a plane, the assembly workability is good. In addition, since the circuit board is arranged so as to overlap the train wheel block in which a plurality of sets of wheel trains are arranged in a plane, it is not necessary to divide the circuit board into a plurality of pieces, and one circuit board can be easily stacked on the train wheel block. Assembling workability can be improved also by this. Further, since the antenna and the battery are respectively disposed on the side portions of the train wheel block and the circuit board within the thickness range in which the train wheel block and the circuit board are overlapped, even if the antenna and the battery are thick, the antenna And a battery can be integrated compactly. Therefore, it is possible to reduce the thickness of the entire watch.

  According to the second aspect of the present invention, the train wheel block includes a three-needle train wheel in which three hands of the second hand, the minute hand, and the hour hand are arranged on the same axis and moved by the first and second pulse motors, and the minute hand The two-handed train wheel, in which two hands of the hour hand are arranged on the same axis and moved by the third pulse motor, the dedicated second train wheel for moving only the second hand by the fourth pulse motor, and the date wheel by the fifth pulse motor With the configuration including the date wheel train that is rotated at the same time, the 3-needle train wheel, the 2-needle train wheel, the second hand train wheel train, and the date wheel train train can be driven independently. As a result, one of each train wheel can be changed to the time system and the chronograph system, and the time system and the chronograph system can be freely changed and combined. In addition to a wide variety of combinations with the graph system, more Function can be displayed.

  For example, the first and second pulse motors that move the second hand, the minute hand, and the hour hand of the three-needle train wheel, and the fifth pulse motor that rotates the date wheel of the date train wheel train are driven as a time system, and are used for two hands. The third pulse motor for moving the minute hand of the train wheel, the hour hand, and the fourth pulse motor for moving the second hand of the train wheel exclusively for the second hand may be driven as a chronograph system. Further, as in an embodiment described later, the second pulse motor for moving the minute hand and hour hand of the three-needle train wheel and the fourth pulse motor for moving the second hand of the second hand dedicated train wheel are driven as a time system, The first pulse motor that drives the second hand of the train wheel, the third pulse motor that moves the minute hand and the hour hand of the train wheel for two hands, and the fourth pulse motor that moves the second hand of the train wheel dedicated to the second hand are used as a chronograph system. It may be driven. Furthermore, the time system and chronograph system may be appropriately changed by driving each pulse motor in a combination other than these, and more by driving each pulse motor as a function other than the chronograph system. Multi-function display may be performed.

  According to the invention described in claim 3, the three-needle wheel train, the two-needle wheel train, the second hand wheel train, and the date wheel train wheel are assembled to the main plate and the train wheel bridge, The three-needle train wheel, the two-needle train wheel, the second-hand train train wheel, and the date wheel train train can all be assembled almost planarly to the main plate and the train train bridge, Since the two-wheel train wheel, the second hand train wheel, and the date wheel train are configured to operate independently, the three-needle train wheel, the two-needle train wheel, the second hand train wheel, and the date wheel The wheel trains can be individually incorporated, thereby improving the assembly workability.

  According to the invention described in claim 4, the date wheel of the date wheel train is disposed on the surface side along the outer peripheral portion of the main plate, and a part of the antenna and a part of the battery are provided on a part of the date wheel. Are overlapped at different positions in the plane direction, and even if a part of the antenna and a part of the battery are overlapped at different positions in the plane direction on the date wheel of the date wheel train, Because the date wheel position of the date wheel train is the thinnest, the overall thickness of the watch is hardly increased, and the antenna and battery can be incorporated in a compact manner, which also reduces the overall size of the watch. Can be planned.

  According to the invention described in claim 5, the three-needle wheel train is a gear train composed of an even number of gears for transmitting the rotation of the date back wheel, and the rotation of the date back wheel by this gear train. By providing a 24-hour hand wheel that is transmitted and moves the 24-hour hand, the number of gear trains arranged between the 24-hour hand wheel and the date wheel can be minimized, Even if a 24-hour hand wheel is provided, an increase in the number of parts can be prevented, and a three-wheel train wheel can be incorporated in a compact manner.

  According to the sixth aspect of the present invention, the gear train of the 3-needle wheel train and the 24-hour hand wheel are arranged on the surface side of the main plate, whereby the gear train of the 3-needle wheel train and the 24-hour hand wheel are arranged. The thickness of the location can be reduced, and part of the battery is placed on top of the gear train and the 24-hour hand wheel, so that the overall thickness of the watch is hardly increased and the battery can be incorporated in a compact manner. This also makes it possible to reduce the overall size of the watch.

  According to invention of Claim 7, the intermediate receiver for supporting the 4th wheel which is the second hand wheel of a 3-needle wheel train is arranged between the main plate and the train wheel bridge, A tube-like holding cylinder is provided in which the second hand shaft of the fourth wheel is rotatably inserted, and this holding cylinder is rotatably inserted into the cylindrical minute hand shaft of the second wheel which is a minute hand wheel of a three-needle wheel train. Thus, by holding the minute hand shaft rotatably, the fourth wheel and the second wheel of the three-needle wheel train can be easily and accurately incorporated.

  That is, when assembling the second wheel and the fourth wheel of the three-needle wheel train, first, the second wheel is arranged on the main plate, and in this state, an intermediate receiver is attached to the main plate, and a tube-like shape provided on the intermediate receiver is provided. By inserting the holding cylinder into the minute hand shaft of the second wheel, the second wheel can be accurately assembled at a predetermined position. When the fourth wheel is attached to the intermediate receiver in this state, the second wheel is provided on the intermediate receiver. By inserting the second hand shaft of the fourth wheel into the tube-shaped holding cylinder, the fourth wheel can be easily and accurately incorporated.

  According to the invention described in claim 8, when the second wheel of the three-needle wheel train is assembled to the main plate, the rough position restricting portion that roughly positions the second wheel is provided. The second wheel of the three-needle train wheel can be roughly assembled by the approximate position restricting portion provided on the main plate, and when the intermediate receiver is attached to the main plate in this state, the second wheel is roughly restricted in position. Therefore, the minute hand shaft of the second wheel can be easily inserted into the tube-shaped holding cylinder provided in the intermediate receiver, and thereby the second wheel can be assembled accurately and reliably.

  According to the ninth aspect of the present invention, the approximate position restricting portion is a gear restricting portion that restricts the outer periphery of the large-diameter gear portion of the center wheel & pinion with a predetermined gap, thereby When the second wheel is assembled to the main plate, the gear restricting portion can roughly restrict the position of the large-diameter gear portion of the second wheel with a predetermined gap, thereby improving the assembly workability. Since the gear restricting portion can be provided integrally with the base plate, the number of parts does not increase, and the gear restricting portion can be easily provided on the base plate, thereby improving productivity.

  According to the tenth aspect of the invention, the approximate position restricting portion is a kana restricting portion that restricts the position of the outer periphery of the cylindrical pinion in the second wheel with a predetermined gap, whereby the second wheel of the three-needle wheel train. When assembling to the main plate, the position of the pinion of the center wheel of the second wheel can be roughly regulated with a predetermined gap by the kana restriction section, which can improve the assembly workability. Can be provided integrally with the base plate, so that the increase in the number of parts can be prevented and the kana restricting portion can be easily provided on the base plate. This can also increase the productivity.

  According to the eleventh aspect of the present invention, the support shaft that rotatably supports the date wheel of the three-needle wheel train is inserted into the mounting hole of the intermediate receiver, and in this state, the head of the support shaft is the wheel. Because the position of the support is provided almost perpendicular to the intermediate support by the shaft retainer provided on the row support, there is no need to fix the support shaft to the intermediate support by caulking, and the support shaft is inserted into the mounting hole of the intermediate support. The support shaft can be easily placed at a predetermined position, and the head of the support shaft can be pressed by the shaft pressing portion provided on the train wheel bridge so that the support shaft is substantially perpendicular to the intermediate receiver. Since the position can be regulated, the support shaft can be easily and accurately attached to the intermediate receiver even when the intermediate receiver is formed in a thin plate shape. The car can be easily and accurately incorporated.

  According to the invention described in claim 12, the date wheel train includes a date indicator press plate for pressing the date dial against the main plate, and a fixing screw for fixing the date dial press plate to the main plate, and a head of the fixing screw. Is composed of an inverted conical countersunk portion disposed in an inverted conical mounting hole provided on the date wheel presser plate, and a disk portion that abuts the main plate, and the screw portion of the fixing screw is the screw hole of the main plate. In the state where the outer peripheral surface of the inverted conical dish portion is in contact with the inner peripheral surface of the inverted conical mounting hole of the date wheel presser plate, the disc portion is in contact with the base plate and fixed. As a result, the date wheel presser plate is fixed to the main plate, so that the fixing force of the fixing screw with respect to the date wheel presser plate can be made almost constant, which prevents deformation of the date wheel presser plate due to variations in the fixing force of the fixing screw. The date indicator presser plate can be fixed to the main plate in a flat state, and the date indicator can be rotated freely. It can be suppressed.

Hereinafter, an embodiment in which a multi-hand timepiece according to the present invention is applied to a wristwatch will be described with reference to FIGS.
The wristwatch includes a wristwatch case 1 as shown in FIGS. A bezel 1a is provided on the outer periphery of the upper part of the watch case 1, and a watch glass 2 is provided on the inner periphery of the watch case 1 via a packing 2a. A watch module 3 is housed inside the watch case 1, and a back cover 4 is attached to the lower surface of the watch case 1 via a waterproof ring 4a. Furthermore, first to fourth push button switches 5a to 5d are provided on the side surfaces of the watch case 1 at the 3 o'clock side and the 9 o'clock side, respectively.

  As shown in FIG. 2, the timepiece module 3 includes a train wheel block 6, a circuit board 7, an antenna 8, and a battery 9, which are incorporated into the watch case 1 by the module pressing plate 10, and the train wheel block 6. The solar panel 11 and the dial plate 12 are laminated in that order on the upper surface of the plate, and the solar panel 11 and the dial plate 12 are attached to the train wheel block 6 by the presser ring 13 in this state.

  In this case, the train wheel block 6 has a chronograph function in which a plurality of train wheels to be described later are arranged in a plane. The circuit board 7 is used to drive and control the train wheel block 6, and is arranged on the lower side of the train wheel block 6. The antenna 8 is for correcting the time by receiving a standard time radio wave, and is disposed on the 12 o'clock side of the timepiece module 3 within the thickness range in which the train wheel block 6 and the circuit board 7 are overlapped. Yes. The battery 9 is a power source and is disposed on the 9 o'clock side of the timepiece module 3, which is a position different from the antenna 8, within the thickness range in which the train wheel block 6 and the circuit board 7 are overlapped.

Next, the train wheel block 6 will be described.
As shown in FIGS. 4 to 16, the train wheel block 6 includes a 3-needle train wheel 15, a 2-needle train train 16, a second hand train train 17, and a date wheel train 18, which are combined. The resin base plate 19 and the synthetic resin train wheel bridge 20 are incorporated in a plane. In this case, the three-needle train wheel 15 is arranged on the same axis with the three hands of the second hand 15 a, the minute hand 15 b, and the hour hand 15 c positioned substantially at the center of the timepiece module 3, and the first and second pulse motors 21. 22, and the 24-hour hand 15 d is moved through the gear train 41 in a state of being located on the 9 o'clock side of the timepiece module 3.

  Further, as shown in FIGS. 4 to 9 and FIG. 13, the two-hand wheel train 16 is on the same axis with the two hands of the minute hand 16a and the 24-hour hand 16b positioned on the 3 o'clock side of the timepiece module 3. It is arranged to be moved by the third pulse motor 23. As shown in FIGS. 4 to 9 and 15, the second hand wheel train 17 is configured to be moved by the fourth pulse motor 24 with the second hand 17 a positioned on the 6 o'clock side of the timepiece module 3. Yes. As shown in FIGS. 4 to 9 and 16, the date wheel train 18 is configured to rotate a date wheel 26 arranged along the outer peripheral portion of the main plate 19 by a fifth pulse motor 25. Yes.

  As shown in FIGS. 10A and 10B, the first to fifth pulse motors 21 to 25 of the respective wheel trains 15 to 18 have a coil portion 27, a stator 28, and a rotor 29, respectively. The rotor 29 is configured to rotate by the magnetic field induced in the stator 28 by causing a current to flow through the coil portion 27 to generate a magnetic field. In this case, both ends of the shaft of the rotor 29 are rotatably supported by the base plate 19 and the train wheel bridge 20, and the rotor portion 29a is arranged without contacting the rotor hole 38a of the stator 28. The unit 27 is configured to perform step rotation according to the magnetic field generated in the unit 27.

Next, each wheel train 15-18 is demonstrated in order.
First, the three-needle wheel train 15 will be described. The three-needle train wheel 15 includes a first train wheel system driven by a first pulse motor 21 and a second train train system driven by a second pulse motor 22, as shown in FIGS. It is divided into two parts. As shown in FIGS. 11 and 12, the first train wheel system includes a fifth wheel 30 rotated by the first pulse motor 21 and a fourth wheel 31 being a second hand wheel rotated by the fifth wheel 30. ing.

  As shown in FIGS. 7 to 12, the second gear train is rotated by the intermediate wheel 32 rotated by the second pulse motor 22, the third wheel 33 rotated by the intermediate wheel 32, and the third wheel 33. In addition to a second wheel 34 that is a minute hand wheel, a date wheel 35 that is rotated by the second wheel 34, and a hour wheel 36 that is an hour hand wheel that is rotated by the date wheel 35. A rotation of the reverse wheel 35 is transmitted by the gear train 41, and a 24-hour hand wheel 37 that rotates once in 24 hours is provided.

  As shown in FIG. 11, the first wheel train Fifth wheel 30 is rotatably supported at both ends of the shaft by the main plate 19 and the train wheel bridge 20, and in this state, the large-diameter gear portion is the first gear wheel. The one-pulse motor 21 meshes with the pinion of the rotor 29 and rotates. As shown in FIGS. 11 and 12, the fourth wheel & pinion 31 which is a second hand wheel has an intermediate receiver 38 attached to the main plate 19 and a train wheel bridge receiver in a state where the second hand shaft 31 a is positioned substantially at the center of the timepiece module 3. The second hand 15a is attached to the distal end portion (lower end portion in FIG. 11) of the second hand shaft 31a.

  In this case, the intermediate receiver 38 is made of a thin metal plate such as stainless steel, and is attached to the base plate 19 in a state where it is located at a substantially intermediate portion between the base plate 19 and the train wheel bridge 20. Further, as shown in FIGS. 11 and 12, the intermediate receiver 38 is provided with a tube-shaped holding cylinder 39 into which the second hand shaft 31a of the fourth wheel & pinion 31 is rotatably inserted. The holding cylinder 39 is rotatably inserted into a cylindrical minute hand shaft 34a of a second wheel 34 which is a minute hand wheel to be described later in a state where the second hand shaft 31a of the fourth wheel 31 is rotatably inserted. 34a is configured to be rotatably held.

  Further, as shown in FIG. 11, the second wheel train intermediate wheel 32 is rotatably supported at both ends of its shaft by the main plate 19 and the train wheel bridge 20, and in this state the large-diameter gear portion is The second pulse motor 22 rotates in mesh with the pinion of the rotor 29. The third wheel & pinion 33 is rotatably supported at both ends of the shaft by the main plate 19 and the intermediate receiver 35, and the large-diameter gear portion meshes with the pinion of the intermediate wheel 32 in this state and rotates. The second hand wheel 34, which is a minute hand wheel, has a minute hand shaft 34a formed in a cylindrical shape, and a tubular holding tube 39 of an intermediate receiver 38 is rotatably inserted into the cylindrical minute hand shaft 34a. In a state of being positioned at the approximate center of the module 3, it is supported by the holding cylinder 39 of the intermediate receiver 38, and the minute hand 15b is attached to the tip end portion (lower end portion in FIG. 11) of the minute hand shaft 34a. The part meshes with the pinion of the third wheel 33 and rotates.

  In this case, when the center wheel & pinion 34 is disposed on the main plate 19, the position of the outer periphery of the large-diameter gear portion is restricted with a predetermined gap by a gear restricting portion 19 a formed integrally with the main plate 19, and the small diameter is reduced. The outer periphery of the cylindrical pinion is position-regulated with a predetermined gap by a kana restricting portion 19b formed integrally with the main plate 19, and the second wheel 34 is schematically shown with respect to the main plate 19 by the gear restricting portion 19a and the kana restricting portion 19b. The position is restricted. Further, as shown in FIG. 17, in the center wheel 34, the minute hand shaft 34a of the second wheel 34 is accurately positioned by the assembling jig G1, and in this state, the tube-shaped intermediate receiver 38 is formed in the minute hand shaft 34a. As the holding cylinder 39 is rotatably inserted, the minute hand shaft 34 a is rotatably supported by the holding cylinder 39 of the intermediate receiver 38.

  As shown in FIG. 12, the date wheel 35 is rotatably attached to a support shaft 40 attached to the intermediate receiver 38. In this state, the large-diameter gear portion meshes with the cylindrical pinion of the center wheel 34. Rotate. In this case, as shown in FIG. 12, the support shaft 40 of the date wheel 35 is inserted into the mounting hole 38 a of the intermediate receiver 38, and the head 40 a of the support shaft 40 is provided in the train wheel bridge 20 in this state. By being pressed by the shaft pressing portion 20a, the position is regulated substantially perpendicularly to the intermediate receiver 38.

  As shown in FIGS. 11 and 12, the hour wheel 36 which is an hour hand wheel has an hour hand shaft 36a formed in a cylindrical shape, and the minute hand shaft 34a is rotatably inserted into the cylindrical hour hand shaft 36a. The timepiece module 3 is supported by the minute hand shaft 34a while being positioned substantially at the center. The hour wheel 15c is attached to the tip of the hour hand shaft 36a (the lower end in FIG. 11), and the gear portion meshes with the pinion of the date wheel 35 in this state. Thus, the second hand shaft 31a, the minute hand shaft 34a, and the hour hand shaft 36a are arranged on the same axis.

  On the other hand, as shown in FIGS. 7 and 12, the gear train 41 is composed of two gears, a first intermediate wheel 42 and a second intermediate wheel 43, and decelerates the rotation of the date wheel 35 to give a 24-hour hand. This is transmitted to the car 37. In this case, as shown in FIG. 12, the first intermediate wheel 42 is rotatably attached to a support pin 19 c provided on the lower surface of the main plate 19, and rotates in mesh with the pinion of the date wheel 35 in this state. . As shown in FIG. 12, the second intermediate wheel 43 is rotatably attached to a support pin 19 d provided on the lower surface of the main plate 19, and in this state, the large-diameter gear portion meshes with the first intermediate wheel 41 and rotates. To do.

  As shown in FIG. 12, the 24-hour hand wheel 37 is rotatably attached to the train wheel bridge 20 with the 24-hour hand shaft 37a positioned on the 9 o'clock side of the timepiece module 3, and the tip of the 24-hour hand shaft 37a. The 24-hour hand 15d is attached to the lower end (in FIG. 12), and the gear portion meshes with the pinion of the second intermediate wheel 43 and rotates in this state, thereby rotating once in 24 hours. In this case, the 24-hour hand wheel 37, the first and second intermediate wheels 42 and 43, the date wheel 35 and the hour wheel 36 which is an hour hand wheel will be described later via elastic washers 36b, 37b and 48b such as spring washers. The date indicator pressing plate 55 is elastically pressed in a rotatable state.

Next, the two-needle train wheel 16 will be described.
As shown in FIG. 1, the two-hand wheel train 16 is arranged at the 3 o'clock side of the timepiece module 3 and is configured to move the two hands of the minute hand 16 a and the 24-hour hand 16 b by the third pulse motor 23. Yes. That is, the two-needle train wheel 16 is an intermediate wheel 45 rotated by the third pulse motor 23 and a minute hand wheel rotated by the intermediate wheel 45 as shown in FIGS. The center wheel 46 includes a date wheel 46, a date wheel 47 that is rotated by the second wheel 46, and a 24-hour hand wheel 48 that rotates once in 24 hours by the date wheel 47.

  As shown in FIG. 13, the intermediate wheel 45 of the two-needle train wheel 16 is rotatably supported at both ends of the shaft by the main plate 19 and the train wheel bridge 20, and in this state the large-diameter gear portion is The third pulse motor 23 rotates in mesh with the pinion of the rotor 29. The second wheel & pinion 46, which is a minute hand wheel, is rotatably supported by the main plate 19 and the train wheel bridge 20 with the minute hand shaft 46a positioned on the 3 o'clock side of the timepiece module 3, and the tip of the minute hand shaft 46a. The minute hand 16a is attached to the portion (lower end portion in FIG. 13), and the large-diameter gear portion meshes with the pinion of the intermediate wheel 45 and rotates in this state.

  Both ends of the shaft of the date wheel 47 are rotatably supported by the main plate 19 and the train wheel bridge 20, and in this state, the large-diameter gear portion meshes with the cylindrical pinion of the second wheel 46 and rotates. The 24-hour hand wheel 48 is a hour wheel, and the minute hand shaft 46a of the second wheel & pinion 46 rotates in the 24-hour hand shaft 48a in a state where the cylindrical 24-hour hand shaft 48a is located at the 3 o'clock side of the timepiece module 3. It is freely inserted, and is thereby supported by the minute hand shaft 46a. In this state, it meshes with the pinion of the date wheel 47 and rotates once in 24 hours. Thereby, the minute hand shaft 46a and the 24-hour hand shaft 48a are arranged on the same axis.

Next, the second hand wheel train 17 will be described.
As shown in FIG. 1, the second hand wheel train 17 is arranged on the 6 o'clock side of the timepiece module 3 and is configured to move the second hand 17 a by the fourth pulse motor 24. That is, the second hand wheel train 17 is a fifth hand wheel 50 rotated by the fourth pulse motor 24 and a second hand wheel rotated by the fifth wheel 50 as shown in FIGS. 7 to 9 and 15. A fourth wheel 51 is provided.

  In this case, as shown in FIG. 15, the fifth wheel & pinion 50 has both ends of its shaft rotatably supported by the main plate 19 and the train wheel bridge 20, and in this state, the large-diameter gear portion is the fourth pulse motor. The rotor 29 of the 24 rotors meshes with the pinion and rotates. A second wheel & pinion 51 which is a second hand wheel is rotatably supported at both ends of the second hand shaft 51a by the main plate 19 and the train wheel bridge 20, and the second hand 17a is provided at a tip portion (lower end portion in FIG. 15) of the second hand shaft 51a. In this state, the gear portion meshes with the pinion of the fifth wheel & pinion 50 and rotates.

Next, the date wheel train 18 will be described.
The date wheel train 18 has a configuration in which the date indicator 26 is rotated by the fifth pulse motor 25, and as shown in FIGS. 7 to 9 and FIG. 16, a fifth wheel 52 that is rotated by the fifth pulse motor 25. An intermediate wheel 53 rotated by the fifth wheel 52, a date indicator driving wheel 54 rotated by the intermediate wheel 53, and a date indicator 26 rotated by the date indicator driving wheel 54. As shown in FIG. 16, the fifth wheel 52 of the date wheel train 18 has both ends of its shaft rotatably supported by the main plate 19 and the train wheel bridge 20, and in this state, a large-diameter gear portion. Meshes with the pinion of the rotor 29 of the fifth pulse motor 25 and rotates.

  Further, as shown in FIG. 16, the intermediate wheel 53 of the date wheel train 18 is rotatably supported at both ends of the shaft by the main plate 19 and the train wheel bridge 20, and the tip of the shaft (FIG. 16). The lower end portion of the intermediate wheel 53 protrudes to the lower side of the main plate 19 and a pinion is provided at the protruding tip portion. In this state, the gear portion of the intermediate wheel 53 meshes with the pinion of the fifth wheel 52 and rotates. The date indicator driving wheel 54 is rotatably attached to a support pin 19e provided on the lower surface of the main plate 19. In this state, the large-diameter gear portion meshes with the pinion of the intermediate wheel 53 and rotates.

  As shown in FIGS. 6 and 7, the date dial 26 is formed in a ring shape having a size along the outer periphery of the main plate 19, and an internal gear portion 26 a is provided on the inner peripheral surface thereof, and the date is provided on the surface at predetermined intervals. It is displayed. As shown in FIG. 7, the position of the date wheel 26 is regulated at a predetermined interval by a circular guide portion 19f provided on the outer peripheral portion of the surface of the main plate 19, as shown in FIGS. Further, the inner peripheral portion is formed to be thinner by one step, and the inner peripheral portion formed to be thinner one step is rotatably held by the date indicator pressing plate 55. In this state, the internal gear portion 26a is connected to the pinion of the date indicator driving wheel 54. 1 turn in a month. Further, the date dial 26 is rotatably held by a date dial presser plate 55 fixed to the main plate 19 by a fixing screw 56.

  As shown in FIGS. 6 and 11 to 16, the date indicator pressing plate 55 is formed in a disk shape having the same size as the internal gear portion 26 a of the date indicator 26, and is formed on the inner peripheral portion of the date indicator 26. The inner gear portion 26a formed to be thinner by one stage is rotatably pressed by the outer peripheral portion of the date dial pressing plate 55, and the 24-hour hand wheel 48 of the two-needle wheel train 16 is pressed by a pressing protrusion 55a provided on the date dial pressing plate 55. Are pressed against the base plate 19 in this state by a fixing screw 56. In this case, the gear portion of the 24-hour hand wheel 48 is formed so that the outer peripheral portion thereof is one step thinner, so that the gear portion of the 24-hour hand wheel 48 and the internal gear portion 26a of the date indicator 26 do not interfere with each other. ing.

  As shown in FIGS. 13 and 14, the fixing screw 56 includes a head portion 57 and a screw portion 58, and the head portion 57 is disposed in an inverted conical mounting hole 55 b provided in the date indicator pressing plate 55. And a disc portion 57b that comes into contact with the bottom surface of a counterbore portion 59 provided on the main plate 19. When the screw portion 58 of the fixing screw 56 is screwed into the screw hole 60a of the screw hole member 60 embedded in the main plate 19, the outer peripheral surface of the inverted conical plate portion 57a is the date indicator press plate. The disc portion 57b is fixed in contact with the bottom surface of the counterbore portion 59 of the main plate 19 in a state where it contacts the inner peripheral surface of the inverted conical mounting hole 55b. It is configured to be fixed to.

  On the other hand, as shown in FIGS. 8 and 11 to 13, the train wheel bridge 20 of the train wheel block 6 includes a three-needle wheel train 15, a two-needle train wheel 16, and a second hand dedicated train wheel 17. A leaf spring 61 is attached to elastically push the pointer shafts and suppress variation in rotation due to backlash of the pointer wheels. That is, as shown in FIG. 8, the leaf spring 61 includes a first spring portion 61 a that elastically presses the tip of the second hand shaft 31 a of the three-needle train wheel 15 and a minute hand shaft 46 a of the two-needle train wheel 16. The second spring portion 61b that elastically presses the tip and the third spring portion 61c that elastically presses the tip of the second hand shaft 51a of the second hand wheel train 17 are integrally formed, and the circuit board 7 is elastic. A plurality of presser spring portions 61d and 61e are formed in contact with the.

  The timepiece module 3 on which the train wheel block 6, the circuit board 7, the antenna 8, and the battery 9 are mounted is incorporated in the watch case 1 by the module pressing plate 10 as shown in FIGS. 2 and 18 to 20. It is. That is, the timepiece module 3 has a circuit board 7 disposed below the train wheel block 6, and within the range of the thickness of the train wheel block 6 and the circuit board 7, the antenna 8 However, a part thereof is arranged in correspondence with the lower side of the date wheel 26 of the date wheel train 18, the battery 9 is disposed at 9 o'clock side of the timepiece module 3, and a part thereof is disposed on the date wheel train 18. The date wheel 26 and the gear wheel 23 of the three-wheel wheel train 15 and the 24-hour hand wheel 43 are arranged in correspondence with each other, and in this state, they are assembled in the watch case 1 by the module presser plate 10. ing.

  In this case, as shown in FIGS. 8 and 9, the ground plane 19 is provided with an antenna storage portion 62 a that stores the upper side of the antenna 8 and a battery storage portion 62 b that stores the upper side of the battery 9. . Further, as shown in FIGS. 8 and 9, the train wheel block 6 is configured so that the pulse motor having the highest driving frequency, for example, the fourth pulse motor 24 of the second hand wheel train 17 does not disturb the reception sensitivity of the antenna 8. The antenna 8 is disposed farthest away from the antenna 8. Further, a solar panel 11 and a transparent dial 12 are disposed on the train wheel block 6, and the solar panel 11 and the transparent dial 12 are attached to the train wheel block 6 by a press ring 13. It has been.

  The solar panel 11 generates an electromotive force by receiving external light through the transparent dial 12. As shown in FIG. 1, a time display 12 a is printed on the surface of the transparent dial 12, and a date display window 12 b corresponding to the date displayed on the date indicator 26 is provided. Further, a circular scale portion 12c corresponding to the hand movement region of the 24-hour hand 15d of the three-needle train wheel 15 is printed at a location located on the surface of the dial 12 on the 9 o'clock side. A circular scale portion 12d corresponding to the hand movement area of the minute hand 16a and the 24-hour hand 16b of the two-hand train wheel 15 is printed at a position located on the 3 o'clock side. In addition, a circular scale portion 12e corresponding to the hand movement area of the second hand 17a of the second hand dedicated train 17 is printed at a location on the dial 12 at the 9 o'clock side.

  As shown in FIG. 18, the timepiece module 3 is incorporated in the wristwatch case 1 in a state where the timepiece module 3 is positioned by the module presser plate 10 disposed below the timepiece module 3. That is, as shown in FIGS. 19 (a) and 19 (b), the module pressing plate 10 is a disc made of synthetic resin, and an opening 10a is provided corresponding to the central portion and the battery storage portion 62b. The plurality of position restricting protrusions 10b are provided on the outer peripheral portion.

  As shown in FIGS. 20 (a) and 20 (b), the position-regulating projection 10b of the module holding plate 10 is connected to the outer periphery of the lower surface of the watch glass 2 via the parting member 63 in the watch case 1. The positioning concave portion 64 provided on the inner peripheral surface of the watch case 1 and the positioning concave portion 65 provided on the outer peripheral surface of the train wheel block 6 and the train wheel bridge 20 are fitted together. By doing so, the timepiece module 3 is positioned within the wristwatch case 1.

Next, the case where such a wristwatch is used will be described.
This wristwatch has a basic clock mode, a chronograph mode, a world time mode, an alarm mode, and a time adjustment mode, and is switched to any mode by operating the first to fourth pushbutton switches 5a to 5d. The basic clock mode is a mode that displays the current time, the chronograph mode is a mode that measures time, the world time mode is a mode that displays the time of each city in the world, and the alarm mode is that that displays the alarm time. The time correction mode is a mode for correcting the time. Hereinafter, each mode will be described in order.

  In the basic timepiece mode, in FIG. 1, the second pulse motor 22 of the three-needle train wheel 15 is operated to move the minute hand 15b, hour hand 15c, and 24 hour hand 15d, thereby indicating the time of minute / hour / 24 hour. At the same time, the fourth pulse motor 24 of the second hand wheel train 17 is operated to move the second hand 17a to indicate the second time, and the fifth pulse motor 25 of the date wheel train 18 is operated to operate the date. By rotating the car 26, the date is displayed in correspondence with the date display window 12b of the dial 12. At this time, since the first pulse motor 21 of the three-needle wheel train 15 does not operate, the second hand 15a is stopped at the reference position (12 o'clock position). Further, since the third pulse motor 23 of the two-needle train wheel 16 does not operate, the minute hand 16a and the 24-hour hand 16b are also stopped at the reference position.

  The chronograph mode is switched to the chronograph mode when the fourth pushbutton switch 5d is operated in the basic clock mode. At this time, the second hand 17a of the second hand wheel train 17 is reset and positioned at the reference position, but the minute hand 15b, the hour hand 15c, the 24 hour hand 15d of the three-hand wheel train 15, and the date wheel 26 of the date wheel train 18 are arranged. Operates as it is to indicate the reference time. In this state, when the fourth pushbutton switch 5d is operated again, the chronograph starts, the first pulse motor 21 of the three-needle wheel train 15 operates to move the second hand 15a, and the second hand dedicated train wheel 17 The second pulse motor 24 operates to move the second hand 17a, and in conjunction with this, the third pulse motor 23 of the two-hand wheel train 16 operates to move the minute hand 16a and the 24-hour hand 16b.

  At this time, the first pulse motor 21 of the three-needle wheel train 15 moves the second hand 15a at a speed of one rotation per minute, and the fourth pulse motor 24 of the second hand dedicated wheel train 17 rotates the second hand 17a once per second. Let the needle move at high speed. Further, the third pulse motor 23 of the two-hand wheel train 16 moves the minute hand 16a at a speed that makes one rotation in 60 minutes, and moves the 24-hour hand 16b at a speed that makes one rotation in 24 hours. As a result, the second hand 17a of the second wheel train 17 and the second hand 15a of the third wheel train 15, the minute hand 16a of the two-hand wheel train 16, and the 24-hour hand 16b move to measure time.

  In this state, when the fourth pushbutton switch 5d is operated again, the chronograph is stopped, and the second hand 17a of the second hand wheel train 17 and the second hand 15a of the third hand wheel train 15 and the second hand wheel train 16 are turned on. The minute hand 16a and the 24-hour hand 16b stop and display the measurement time. Thereafter, when the fourth pushbutton switch 5d is operated again, the chronograph is started again, time is measured in the same manner as described above, and when the fourth pushbutton switch 5d is operated again, the chronograph is stopped. The measurement time is indicated and displayed. When the second push button switch 5b is operated, the mode returns to the basic clock mode.

  The world time mode is switched to the world time mode when the first push button switch 5a is operated in the basic clock mode. At this time, the second hand 15a of the three-needle train wheel 15 indicates one of the cities displayed on the parting member 63, and the minute hand 16a and the 24-hour hand 16b of the two-needle train wheel 16 are indicated by the second hand 15a. And the second hand 17a of the dedicated second wheel train 17 indicates the second time of both the home time and the local time (both are the same second time). Further, the minute hand 15b, hour hand 15c, 24 hour hand 15d of the 3-hand wheel train 15 and the date indicator 26 of the date wheel train 18 operate as they are to indicate the home time.

  In this case, each city code displayed on the parting member 63 is displayed at even steps (2 minute intervals), and the reference city is at the 12 o'clock position (GMT). When changing the city, the second hand 15a of the three-wheel train 15 is sequentially moved every time the first pushbutton switch 5a is pressed again within one second after the first pushbutton switch 5a is pressed. Accordingly, the minute hand 16a and the 24-hour hand 16b of the two-hand train wheel 16 indicate the local time of the changed city. When the first push button switch 5a is operated while operating the second push button switch 5b, the home time and the local time are switched. If only the second push button switch 5b is operated, the mode returns to the basic clock mode.

  The alarm mode is switched to the alarm mode when the third push button switch 5c is operated in the basic clock mode. At this time, the second hand 15a of the three-needle train wheel 15 indicates ON (ON) displayed near 11:00, and the minute hand 16a and the 24-hour hand 16b of the two-needle train wheel 16 indicate the alarm time. The second hand 17a of the second hand wheel train 17, the minute hand 15b of the three-hand wheel train 15, the hour hand 15c, the 24 hour hand 15d, and the date wheel 26 of the date wheel train 18 operate as they are to indicate the reference time. . When the fourth pushbutton switch 5d is operated, the basic timepiece mode is restored.

  The time adjustment mode is switched to the time adjustment mode when the second pushbutton switch 5b is operated in the basic clock mode. At this time, the second hand 15a of the three-needle train wheel 15 indicates yes (Y) displayed at around 3 o'clock, and the previous reception received by the antenna 8 by the minute hand 16a and the 24-hour hand 16b of the two-needle train wheel 16 is received. Indicate the result. The second hand 17a of the second hand wheel train 17, the minute hand 15b of the three-hand wheel train 15, the hour hand 15c, the 24 hour hand 15d, and the date wheel 26 of the date wheel train 18 operate as they are to indicate the reference time. .

  In this state, when the second push button switch 5b is operated again for 2 seconds, the second hand 15a of the three-needle train wheel 15 indicates the ready (READY) displayed at around 7 o'clock, and the second hand 17a of the second hand wheel train 17 is turned on. Returning to the reference position, the antenna 8 forcibly receives the standard time radio wave. When the second push button switch 5b is operated for 5 seconds, the time is corrected, the first push button switch 5a corrects the forward rotation, the second push button switch 5b corrects the seconds, and the third push button switch 5c corrects the date. The fourth push button switch 5d performs reverse correction and returns to the basic clock mode.

  Thus, according to this wristwatch, the train wheel block 6 having the chronograph function is composed of a plurality of train wheels, that is, a three-needle train wheel 15, a two-needle train wheel 16, a second hand train wheel train 17, and a date wheel. With the configuration in which the train wheel trains 18 are arranged in a planar manner, the thickness of the train wheel block 6 can be reduced, and a plurality of train wheel trains can be assembled in a planar manner, so that the assembly workability is good. . In addition, since the circuit board 7 is arranged on the lower side of the train wheel block 6 in which a plurality of wheel trains are assembled in a plane, the circuit board 7 does not need to be divided into a plurality of parts, and one circuit board 7 is attached to the wheel block. It can be easily overlapped and assembled to the row block 6, and the assembly workability can also be improved. Further, since the antenna 8 and the battery 9 are respectively disposed on the side portions of the train wheel block 6 and the circuit board 7 within the thickness range in which the train wheel block 6 and the circuit board 7 are overlapped, Even if the battery 9 is thick, the antenna 8 and the battery 9 can be incorporated in a compact manner. As a result, the entire watch can be made thinner.

  In this case, the train wheel block 6 includes a three-needle train wheel 15 in which three hands of the second hand 15a, the minute hand 15b, and the hour hand 15c are arranged on the same axis and moved by the first and second pulse motors 21 and 22, and the minute hand. 16a and an hour hand 16b are arranged on the same axis, and a two-needle train wheel 16 that is moved by the third pulse motor 23, and a second hand dedicated train wheel 17 that moves only the second hand 17a by the fourth pulse motor 24; By including a date wheel train 18 for rotating the date wheel 26 by the fifth pulse motor 25, a 3-needle train wheel 15, a 2-needle train wheel 16, a second hand train wheel 17, and a date The vehicle wheel train 18 can be driven independently, whereby any one of the train trains 15 to 18 can be changed between the time system and the chronograph system, and the time system and the chronograph system Can be freely changed and combined, this More time system and in addition to variations of a combination of a chronograph system become rich, it is more of a multi-function display.

  For example, as in the above-described embodiment, the second pulse motor 22 that moves the minute hand 15b of the three-needle train wheel 15, the hour hand 15c, the fourth pulse motor 24 that moves the second hand 17a of the second-hand wheel train 17, and The fifth pulse motor 25 that moves the date wheel 26 of the date wheel train 18 is driven as a time system, and the first pulse motor 21 that drives the second hand 15a of the 3-needle train wheel 15 and the second train wheel 16 of the needle train 16 are driven. The third pulse motor 23 for moving the minute hand 16a and the hour hand 16b, and the fourth pulse motor 24 for moving the second hand 17a of the second hand wheel train 17 can be driven as a chronograph system.

  Further, the first and second pulse motors 21 and 22 for moving the second hand 15a, the minute hand 15b, the hour hand 15c and the 24 hour hand 15d of the three-wheel train wheel 15 and the date wheel 26 of the date wheel train 18 are moved. A third pulse motor 23 that drives the five-pulse motor 25 as a time system and moves the minute hand 16a and hour hand 16b of the two-needle train wheel 16, and a fourth pulse motor 24 that moves the second hand 17a of the second-hand wheel train 17; Can also be driven as a chronograph system. Further, by driving the pulse motors 21 to 25 in combinations other than these, the time system and the chronograph system can be appropriately changed, and more multifunctional displays such as world time can be performed.

  Further, in this wristwatch, the 3-needle wheel train 15, the 2-needle train wheel 16, the second hand train wheel train 17, and the date wheel train train 17 are assembled to the main plate 19 and the train wheel bridge 20. The three-needle train wheel 15, the two-needle train wheel 16, the second hand train wheel train 17, and the date wheel train train 18 can all be assembled to the main plate 19 and the train wheel bridge 20 in a substantially planar manner. Since the three-needle train wheel 15, the two-needle train wheel 16, the second hand train wheel train 17, and the date wheel train train 18 operate independently, the three-needle train wheel 15, two-needle train wheel The wheel train 16, the second hand wheel train 17, and the date wheel train 18 can be individually incorporated, thereby further improving assembling workability.

  In this case, the date wheel 26 of the date wheel train 18 is arranged on the surface side along the outer peripheral portion of the main plate 19, and a part of the antenna 8, a part of the battery 9, and a part of the date wheel 26. Are overlapped at different positions in the plane direction, so that even if a part of the antenna 8 and a part of the battery 9 are overlapped at different positions in the plane direction on the date wheel 26 of the date wheel train 18 Among the blocks 6, the location of the date wheel 26 of the date wheel train 18 is the thinnest, so that the thickness of the watch module 3 is hardly increased, and the antenna 8 and the battery 9 can be incorporated in a compact manner. This also makes it possible to reduce the size of the entire watch.

  The three-needle wheel train 15 includes a gear train 41 composed of an even number of gears (that is, the first and second intermediate wheels 42 and 43) for transmitting the rotation of the date wheel 35 and the gear train 41. Is provided with a 24-hour hand wheel 37 that transmits the rotation of the date wheel 35 and moves the 24-hour hand 15d, so that the gear train 41 arranged between the 24-hour hand wheel 37 and the date wheel 35 is provided. Therefore, even if the 24-hour hand wheel 37 is provided, the number of parts can be prevented from being increased and the three-needle wheel train 15 can be incorporated in a compact manner.

  In particular, the 24-hour hand wheel 37 and the gear train 41 of the three-needle wheel train 15 are arranged on the surface side of the main plate 19, so that the locations of the 24-hour hand wheel 37 and the gear train 41 of the three-needle wheel train 15 are reduced. Since the thickness of the battery 9 can be reduced and a part of the battery 9 overlaps the 24-hour hand wheel 37 and the gear train 41, the thickness of the timepiece module 3 is hardly increased, and the battery 9 is made compact. It can be incorporated, and this can also reduce the overall size of the watch.

  Further, in this wristwatch, an intermediate receiver 38 for supporting a fourth wheel 31 which is a second hand wheel of the three-needle wheel train 15 is arranged between the main plate 19 and the train wheel receiver 20. A tube-like holding cylinder 39 into which the second hand shaft 31a of the dial wheel 31 is rotatably inserted is provided, and the holding cylinder 39 is a cylindrical minute hand shaft 34a of the second wheel 34 which is a minute hand wheel of the three-needle wheel train 15. The fourth wheel 31 and the second wheel 34 of the three-needle wheel train 15 can be easily and accurately assembled by rotatably inserting the minute hand shaft 34a therein.

  That is, when assembling the second wheel 34 and the fourth wheel 31 of the three-needle wheel train 15, first, the second wheel 34 is arranged on the base plate 19, and the minute hand shaft 34 a is held by the assembly jig G 1. In this state, the center wheel 34 is supported on the main plate 19, and an intermediate receiver 38 is attached to the main plate 19, and a tubular holding cylinder 39 provided on the intermediate receiver 38 is inserted into the minute hand shaft 34 a of the second wheel 34. Thus, the center wheel & pinion 34 can be accurately and reliably assembled at a predetermined position. In this state, when the fourth wheel 31 is attached to the intermediate receiver 38, the second wheel 31 can be easily installed by inserting the second hand shaft 31 a of the fourth wheel 31 into the tube-shaped holding cylinder 39 provided in the intermediate receiver 38. And can be incorporated accurately.

  In this case, when the second wheel 34 of the three-needle wheel train 15 is assembled to the main plate 19, a gear restricting portion 19a for restricting the outer periphery of the large-diameter gear portion of the second wheel 34 with a predetermined gap is provided. As a result, when the second wheel 34 of the three-needle wheel train 15 is assembled to the main plate 19, the position of the large-diameter gear portion of the second wheel 34 is roughly restricted with a predetermined gap by the gear restricting portion 19a. As a result, the assembly workability can be improved, and the gear restricting portion 19a can be provided integrally with the main plate 19, so that the number of parts does not increase and the gear restricting portion 19a can be easily provided. It can be provided on the main plate 19, thereby improving productivity.

  Furthermore, when the second wheel 34 of the three-needle wheel train 15 is assembled, the ground plate 19 is provided with a kana restricting portion 19b that positions the outer periphery of the cylindrical pinion in the second wheel 34 with a predetermined gap. Thus, when the second wheel 34 of the three-needle wheel train 15 is assembled to the main plate 19, the position of the cylindrical pinion in the second wheel 34 can be roughly regulated with a predetermined gap by the kana restricting portion 19b. In addition to improving the workability of the assembly, as with the gear restricting portion 19a, the kana restricting portion 19b can be provided integrally with the main plate 19, so that this also prevents an increase in the number of parts and makes it easy. Since 19b can be provided in the ground plane 19, productivity can be improved also by this.

  In the three-needle train wheel 15, the support shaft 40 that rotatably supports the date wheel 35 is inserted into the mounting hole 38a of the intermediate receiver 38. In this state, the head 40a of the support shaft 40 is connected to the wheel. Since the position of the support 20 is substantially perpendicular to the intermediate receiver 38 by the shaft pressing portion 20a provided on the train receiver 20, there is no need to fix the support shaft 40 to the intermediate receiver 38 by caulking, and the support shaft 40 is intermediate. The support shaft 40 can be arranged simply by being inserted into the mounting hole 38a of the support 38, and the head 40a of the support shaft 40 is pressed by the shaft pressing portion 20a provided in the train wheel bridge 20, so that the support shaft 40 can be positioned substantially perpendicularly to the intermediate receiver 38, so that the support shaft 40 can be easily and accurately attached to the intermediate receiver 38 even if the intermediate receiver 38 is formed of a thin metal plate. In , Thereby incorporate Nichinourasha 35 of the three-hand wheel train 15 easily and accurately.

  Further, in this wristwatch, the date wheel train 18 includes a date indicator pressing plate 55 that holds the date indicator 26 against the main plate 19 and a fixing screw 56 that fixes the date indicator pressing plate 55 to the main plate 19. A head portion 57 of the screw 56 abuts against an inverted conical countersunk portion 57 a disposed in an inverted conical mounting hole 55 b provided in the date indicator pressing plate 55 and a bottom portion of a counterbore portion 59 of the main plate 19. When the screw portion 58 of the fixing screw 56 is screwed into the screw hole 60a of the screw hole member 60 embedded in the main plate 19, the outer peripheral surface of the inverted conical plate portion 57a is The disc portion 57b is abutted against and fixed to the bottom of the counterbore portion 59 of the main plate 19 in a state where it contacts the inner peripheral surface of the inverted conical mounting hole 55b of the wheel retainer plate 55, whereby the date wheel retainer plate 55 is secured. Is fixed to the main plate 19, so that the fixing screw 56 is fixed to the date wheel pressing plate 55. It can be made substantially constant.

  As a result, the fixing screw 56 prevents the date indicator pressing plate 55 from being deformed due to variations in the fixing force, so that the date indicator pressing plate 55 can be satisfactorily fixed to the main plate 19 in a flat state. Can be pressed well in a freely rotatable state. For this reason, the solar panel 11 and the dial 12 arranged on the date wheel presser plate 55 can be assembled in a flat state, and the pointers 15a to 15d, 16a, 16b, and 17a of the wheel trains 15 to 17 The distance from the dial 12 can be secured, whereby the pointers 15a to 15d, 16a, 16b, and 17a can be prevented from contacting the dial 12, and the pointers 15a to 15d, 16a, 16b, 17a can be moved well above the dial 12.

  In the timepiece module 3 of the above-described embodiment, a part of the antenna 8 and a part of the battery 9 are arranged on the lower side of the date wheel 26 of the date wheel train 18 and the three-hand wheel train 15 is arranged. Although the case where a part of the battery 9 is further arranged on the lower side of the gear train 23 and the 24-hour hand wheel 43 has been described, the present invention is not limited to this. For example, as in the first modification shown in FIG. 3 may have a configuration in which the antenna 8 and the battery 9 are arranged on the side of the train wheel block 6 and the circuit board 7 so as not to overlap the train wheel block 6. Also in this case, the antenna 8 and the battery 9 may be within the thickness range in which the train wheel block 6 and the circuit board 7 are overlapped. In such a timepiece module 3, the entire timepiece can be made thinner than that of the above embodiment by being incorporated in the watch case 1 by the module pressing plate 10.

  In the above-described embodiment and the first modification thereof, the timepiece module 3 includes the train wheel block 6, the circuit board 7, the antenna 8, and the battery 9, and these are incorporated directly into the watch case 1 by the module pressing plate 10. However, the present invention is not limited to this. For example, as in the second modification shown in FIG. 22, the train wheel block 6, the circuit board 7, the antenna 8, and the battery 9 are assembled to the housing 70, thereby The timepiece module 71 may be incorporated into the watch case 1 by the module pressing plate 10. If comprised in this way, although the thickness of the whole timepiece will become thick only by the thickness of the housing 70, the assembly operation | work of the timepiece module 71 will become easy and productivity can be improved further.

  Furthermore, in the above-described embodiment and the first and second modifications thereof, the case where the present invention is applied to a wristwatch is described as the multi-hand timepiece of the present invention, but it is not necessarily a wristwatch, a pocket watch, a travel watch, an alarm clock. The present invention can be widely applied to various types of clocks such as clocks, table clocks and wall clocks.

It is the enlarged front view which applied this invention to the wristwatch. It is a schematic sectional drawing in the AA arrow of FIG. FIG. 2 is a back view of the wristwatch of FIG. 1 with a back cover removed. It is the front view which showed the timepiece module of FIG. It is a reverse view of the timepiece module of FIG. FIG. 5 is a front view of the timepiece module with the solar panel and dial removed in FIG. 4. FIG. 7 is a front view of the timepiece module with the date indicator pressing plate removed in FIG. 6. FIG. 6 is a back view of the timepiece module with the circuit board removed in FIG. 5. FIG. 9 is a back view of the timepiece module with the train wheel bridge removed in FIG. 8. FIGS. 8 and 9 show the first to fifth pulse motors, wherein (a) is an enlarged front view and (b) is an enlarged side view thereof. FIG. 10 is a cross-sectional view of the three-needle train wheel as viewed in the direction of arrows BB in FIG. 9. FIG. 8 is a cross-sectional view of a three-needle train wheel that is vertically inverted in the direction of arrows CC in FIG. FIG. 10 is a cross-sectional view of the two-needle train wheel as viewed in the direction of arrows DD in FIG. 9. It is sectional drawing to which the fixing screw vicinity which is the A section of FIG. 13 was expanded. FIG. 10 is a cross-sectional view of the second hand wheel train in the direction of arrows EE in FIG. 9. FIG. 10 is a cross-sectional view of a date wheel train as viewed in the direction of arrows F-F in FIG. 9. FIG. 12 is an enlarged cross-sectional view showing a state in which the minute hand wheel of the three-needle wheel train of FIG. 11 is positioned on the main plate with an assembling jig. FIG. 4 is a back view of a state in which the timepiece module of FIG. 3 is positioned in a watch case with a module pressing plate. The module pressing plate of FIG. 18 is shown, (a) is its front view, (b) is its side view, and (c) is its back view. 18 is a cross-sectional view taken along the line H-H in FIG. 18, and FIG. 18B is a cross-sectional view taken along the line I-I in FIG. 18. FIG. 6 is an enlarged cross-sectional view schematically showing a timepiece module of a first modification. It is the expanded sectional view showing the wristwatch of the 2nd modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Watch case 3,71 Clock module 5a-5d 1st-4th pushbutton switch 6 Wheel train block 7 Circuit board 8 Antenna 9 Battery 15 3 needle train wheel 15a Second hand 15b Minute hand 15c Hour hand 15d 24 hour hand 16 Two needle train wheel 16a minute hand 16b 24 hour hand 17 second hand dedicated wheel train 17a second hand 18 date wheel train 19 base plate 19a gear restricting portion 19b kana restricting portion 20 wheel train catch 20a shaft retainer 21-25 first to fifth step motor 26 date indicator 31 Fourth wheel 34 Second wheel 35 Date wheel 36 Hour wheel 37 24 hour hand wheel 38 Intermediate receiver 38a Mounting hole 39 Holding cylinder 40 Support shaft 40a Head 41 Gear train 42, 43 First and second intermediate wheels 55 Date wheel Presser plate 55b Mounting hole 56 Fixing screw 57 Head 57a Plate part 57b Disk part 58 Screw part 60a Screw hole

Claims (13)

  A train wheel block having a chronograph function in which a plurality of train wheel trains each carrying a plurality of hands are arranged in a plane, and a circuit board for driving the train wheel block are arranged to overlap, and the train wheel block The multi-hand timepiece is characterized in that an antenna and a battery are respectively disposed on the side portions of the train wheel block and the circuit board within a thickness range in which the circuit board and the circuit board are overlapped.   The train wheel block has a three-needle train wheel that is arranged with the second, minute, and hour hands on the same axis and is moved by the first and second pulse motors, and the two hands, the minute and hour hands, on the same axis. A two-hand train wheel that is arranged and moved by a third pulse motor, a second hand train wheel that moves only the second hand by a fourth pulse motor, and a date wheel train that rotates the date wheel by a fifth pulse motor. The multi-hand timepiece according to claim 1, further comprising:   3. The three-needle wheel train, the two-needle wheel train, the second hand wheel train, and the date wheel train wheel are assembled to a main plate and a train wheel bridge. Multi-hand clock.   The date wheel of the date wheel train is disposed on the surface side along the outer peripheral portion of the main plate, and a part of the antenna and a part of the battery are respectively included in a part of the date wheel. The multi-hand timepiece according to claim 2 or 3, wherein the timepieces overlap at different positions in the plane direction.   The three-hand wheel train includes a gear train composed of an even number of gears for transmitting the rotation of the date wheel, and the rotation of the date wheel is transmitted by this gear train to move the 24-hour hand. The multi-hand timepiece according to claim 2, further comprising an hour hand wheel.   The gear train and the 24-hour hand wheel of the three-needle wheel train are disposed on the surface side of the main plate, and a part of the battery is disposed to overlap the gear train and the 24-hour hand wheel. The multi-hand timepiece according to any one of claims 2 to 5, wherein   An intermediate receiver for supporting a fourth wheel which is a second hand wheel of the three-needle wheel train is disposed between the main plate and the train wheel bridge. The intermediate receiver includes a second hand of the fourth wheel. A tube-shaped holding cylinder into which a shaft is rotatably inserted is provided, and the holding cylinder is rotatably inserted into a cylindrical minute hand shaft of a second wheel which is a minute hand wheel of the three-needle wheel train. The multi-hand timepiece according to any one of claims 3 to 6, wherein the shaft is rotatably held.   8. The base plate is provided with a rough position restricting portion for roughly restricting the position of the second wheel when the second wheel of the three-needle wheel train is assembled. The multi-hand clock described in 1.   9. The multi-hand timepiece according to claim 8, wherein the approximate position restricting portion is a gear restricting portion that restricts a position of an outer periphery of a large-diameter gear portion in the second wheel & pinion with a predetermined gap.   The multi-needle timepiece according to claim 8, wherein the approximate position restricting portion is a pinion restricting portion that restricts the position of the outer periphery of the cylindrical pinion in the center wheel & pinion with a predetermined gap.   A support shaft that rotatably supports the date wheel of the three-needle wheel train is inserted into the mounting hole of the intermediate receiver, and in this state, the head of the support shaft is provided on the train wheel bridge. The multi-hand timepiece according to any one of claims 3 to 10, wherein the position is regulated substantially perpendicularly to the intermediate receiver by a presser portion.   The date wheel train includes a date indicator press plate that presses the date dial against the main plate, and a fixing screw that fixes the date indicator press plate to the base plate. It comprises an inverted conical countersunk part disposed in an inverted conical mounting hole provided in a date indicator presser plate, and a disk part that abuts against the main plate, and the screw portion of the fixing screw is a screw of the main plate. When the screw is screwed into the hole, the disc portion is in contact with the base plate in a state where the outer peripheral surface of the inverted conical dish portion is in contact with the inner peripheral surface of the inverted cone mounting hole of the date wheel pressing plate. The multi-hand timepiece according to any one of claims 3 to 11, wherein the date dial presser plate is fixed to the main plate by abutting and fixing. A train wheel block having a chronograph function in which a plurality of train trains each carrying a plurality of hands are arranged in a plane, and
In order to drive the train wheel block, a circuit board that is placed over the train wheel block, and within a thickness range in which the train wheel block and the circuit board are stacked, the train wheel block and the circuit board An antenna for receiving a standard time radio wave placed on the side of the
Within the thickness range in which the train wheel block and the circuit board are overlapped, a battery disposed on another side portion different from the side portion on which the antenna is disposed;
A standard time radio wave reception type multi-hand timepiece characterized by comprising:

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