JP2001042060A - Movement for automatic correction clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic correction clock movement with structure for performing easily when connecting the terminal of light-emitting and light- receiving devices to a control unit. SOLUTION: In a movement 3, a circuit substrate 41 with a terminal for light-emitting and light-receiving devices is fixed on the surface of an upper case, a circuit substrate 43 with a terminal for a light-emitting device 44 and a light reception element is fixed to the surface of a lower case 11, and a U-shaped socket 60 when viewed from the side with conductive pins 60a-60d where one end touches the terminal for the light-emitting device and that for the light reception element and the other end projects from the side surface of both the cases is fitted. By fitting the socket 60 from the side-surface of both the lower and upper cases, the terminal for both the elements can be connected to the control unit easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movement for an automatic timepiece used for an automatic timepiece which corrects the time by receiving a time signal such as an hour signal.

[0002]

2. Description of the Related Art Among automatic correction clocks, a radio correction clock using radio waves receives a standard frequency radio wave (JG2AG) of a predetermined frequency emitted from a radio station, for example, a long wave (40 kHz) transmitting the Japanese Standard Time with high accuracy. Based on the received signal, so-called zero return is performed. In the case of this zero return, a pointer position detecting device is provided to accurately adjust the position of the pointer to the correct time or the like.

A conventional radio-controlled timepiece movement equipped with this pointer position detecting device is disclosed in, for example,
One described in, for example, JP-A-123266 is known. That is, it has a first drive system for rotating the minute hand gear and a second drive system for rotating the hour hand gear, and has a detecting means for detecting the minute hand and the hour hand gear. A first case and a second case that are connected to each other so as to cover and surround the first drive system and the second drive system based on the correction operation at a predetermined time based on the detection light; It is known that the transmission type light detection sensor includes a light-emitting element that emits light and a light-receiving element that receives detection light emitted from the light-emitting element and outputs a signal.

Further, the first case has a first through hole for disposing a light emitting element, and the second case has a second through hole for disposing a light receiving element. A first substrate, and a second substrate to which a light receiving element is attached;
The first case and the second case have a first substrate and a second case, respectively.
It is known to mount substrates.

[0005]

In the conventional radio-controlled timepiece movement, in order to reduce the cost, the detecting means receives a light emitting element which emits the detection light and the detection light emitted from the light emitting element and outputs a signal. In order to detect the position of the gear disposed inside the movement, since one transmission-type light detection sensor including
In order to dispose a light emitting element and a light receiving element in the first through hole provided in the first case and the second through hole provided in the second case, respectively, the first substrate is fixed to the first case, and the second substrate is fixed to the second case. Two substrates were fixed.

In such a movement, the terminals of the light emitting element and the light receiving element are connected to a control unit for controlling both elements separate from the movement by soldering with a cord or the like.

However, when soldering such a movement, the terminal of the light emitting element provided on the first substrate fixed on the surface of the first case is connected to the cord by soldering, and then the movement is turned over. Therefore, the terminals of the light emitting elements provided on the second substrate fixed on the surface of the second case and the cords have to be soldered, and the workability is poor.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a self-correcting timepiece movement having a structure that can easily perform connection between a terminal of a light emitting element and a light receiving element and a control unit. Is to provide.

[0009]

In order to solve the above-mentioned problems, a first substrate and a second substrate are fixed to a first case and a second case, and the first substrate and the second substrate are sandwiched between the first and second substrates. A socket having a conductive portion, one end of which contacts the terminal and the light receiving element terminal and the other end of which extends toward the side surface of the case, is mounted.

Therefore, when connecting the terminal of the element and the control unit, the terminal of the element provided on both substrates and the conductive part provided on the socket come into contact only by inserting the socket from the side of the two cases. The conductive portion is disposed on the side surface of the case, and the conductive portion and the control portion may be connected by soldering or the like, so that workability is good.

When the timepiece is disassembled for repair or the like, the connection between the terminal of the element and the terminal of the socket is released simply by pulling the socket out of the case to remove it, which facilitates disassembly. Also, assembly after disassembly is easy.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described in detail with reference to FIG. The radio-controlled timepiece 1 according to this embodiment includes:
A first drive system 20 that drives the second hand 4 that is a hand, a second drive system 30 that drives the minute hand 5 and the hour hand 6 that are hands, and a light transmission type that detects the positions of the second hand 4, the minute hand 5, and the hour hand 6. A light detection sensor 40 is provided, and receives a predetermined frequency, for example, a long wave (40 kHz) standard time radio wave (JG2AG) transmitted with high precision from a radio station by the antenna 2 disposed inside the watch, for example, and receives this signal. Based on the signal, the time is corrected by the control unit 7 which controls the so-called zero-reduction.

As shown in FIG. 1, the radio-controlled timepiece 1 has a movement 3 fixed at the center of the back of the dial, and an antenna 2 and a control unit 7 disposed behind the dial. The position of the pointer is detected by detecting means provided in the movement 3 described later. Further, when a radio wave transmitted from the station is received by the antenna 2, the received time information is sent to the control unit 7, and based on this time information, the position of the hands is detected, and then the hands are quickly moved to correct the time. Is what you do. Therefore, in order to exchange signals between the movement 3 and the control unit 7, it is necessary to connect the terminal of the detection means of the movement 3 to the control unit 7 via a cord.

The inside of the movement 3 will be described.
The movement 3 includes a lower case 11 as a second case and an upper case 12 as a first case which are connected to each other to form an outline, and a space formed by the lower case 11 and the upper case 12. A middle plate 13 is provided at a substantially central portion in a state of being connected to the lower case 11, and the lower case 11, the middle plate 13, and the upper case 1 in a space are provided.
The first drive system 20, the second drive system 30, and the light detection sensor 40 are fixed or pivotally supported at two predetermined positions.

As shown in FIGS. 9 to 11, the first drive system 20 includes a substantially U-shaped stator 21a,
a first stepping motor 21 constituted by a driving coil 21b wound around one leg of the rotor 21a, a rotor 21c rotatably disposed between the other magnetic poles of the stator 21a, and a pinion 21c of the rotor 21c. The first transmission gear (the first detection gear) in which the large-diameter gear 22a meshes with '
, And a second hand wheel 23 as a second detection gear (first pointer wheel) meshed with the small diameter gear 22b of the first fifth wheel 22. Here, the first stepping motor 21 is configured such that the stator 21 a is mounted on the middle plate 13 and fixed, and the rotor 21 c is fixed to the middle plate 13.
And the upper case 12, and its rotation direction, rotation angle, and rotation speed are controlled based on an output control signal of the control unit.

The first fifth wheel & pinion 22 has a large diameter gear 22a having 60 teeth and a small diameter gear 22b having 15 teeth. The lower case 11 and the upper case 12 are pivotally supported by the lower case 11 and the upper case 12. The large-diameter gear 22a is connected to the first stepping motor 21
And the rotational speed of the rotor 21c is reduced to a predetermined speed. This first
As shown in FIGS. 11 and 13, the fifth wheel 22 has three circular transparent holes arranged at equal intervals in the circumferential direction (center angle α1 is 120 °) in the region overlapping the second hand wheel 23. A hole 22c is formed. The through holes 22c not only allow the detection light of the light detection sensor 40 to pass therethrough, but at least one of the through holes 22c is used as a positioning hole (determining hole) when the first fifth wheel & pinion 22 is assembled. is there.

The second hand wheel 23 has a large-diameter gear 23a having six teeth.
The second hand shaft 23b is press-fitted to the other end side of the shaft portion, which is supported by the upper case 12 and the middle plate 13 penetrates the lower case 11 side.
Is inserted through a minute hand pipe 34p, which will be described later, and the second hand 4 is attached to the tip of the minute hand pipe 34p. This second hand wheel 23
As shown in FIG. 14, the first fifth wheelchair 2
11 circular through holes 23c arranged at equal intervals (central angle α2 is 30 °) in the circumferential direction in a region overlapping with 2
And a positioning light shielding portion 23d having a different pitch only at one position.
(The central angle between the through hole 23c and the through hole 23c is 60 °). And the through hole 2 of the first fifth wheel & pinion 22
When the second hand first faces the through hole 23c after facing the positioning light-shielding portion 23d, the second hand points to the hour.

The through hole 23c not only allows the detection light of the light detection sensor 40 to pass therethrough, but at least one of the through holes 23c
It is used as a positioning hole (a determination hole) when assembling the second hand wheel 23. Inside the through holes 23c, arc-shaped biasing springs 23e which are long in the circumferential direction and protrude in the rotation axis direction are defined by cutout holes 23f. The arc-shaped urging spring 23e urges the second hand wheel 23 in the rotation axis direction.

The positioning light shielding portion 23d is formed at a position distant from the notch hole 23f in the circumferential direction, that is, at a region where the two notch holes 23f are separated from each other. Therefore, a sufficient distance between the notch hole 23f and the positioning light-shielding portion 23e can be ensured.
The detection light can be reliably blocked by the positioning light shielding portion 23d without going around f. That is, the notch hole 23 which is liable to cause erroneous detection due to the wraparound of the detection light.
Positioning light shielding part 23d at a position distant from the area where f is provided
Is formed, this positioning light shielding portion 23d
Is used for positioning of the rotation angle position of the second hand wheel 22 so that reliable positioning can be performed.

The second drive system 30 is shown in FIGS.
As shown in the figure, a substantially U-shaped stator 31a, a drive coil 31 wound around one leg of the stator 31a.
b, a second stepping motor 31 constituted by a rotor 31c rotatably arranged between the other magnetic poles of the stator 31a, and a pinion 31 of the rotor 31c
The second intermediate gear as an intermediate gear in which the large-diameter gear 32a meshes with c ′
And the small diameter gear 32 of the second fifth wheel 32
The third wheel 33 as a second transmission gear (third detection gear) in which the large diameter gear 33a meshes with the second gear b, and the fourth detection gear in which the large diameter gear 34a meshes with the small diameter gear 33b of the third wheel 33. A minute hand wheel 34 as a (second pointer wheel) and this minute hand wheel 34
The minute wheel 35 as an intermediate gear in which the large-diameter gear 35a meshes with the small-diameter gear 34b, and the hour hand as the fifth detection gear (second pointer wheel) meshed with the small-diameter gear 35b of the minute wheel 35 of this day. And a vehicle 36. Here, the second stepping motor 31 has a stator 31a mounted on and fixed to the middle plate 13, a rotor 31c supported by the middle plate 13 and the upper case 12, and based on an output control signal of the control unit. Thus, the rotation direction, rotation angle and rotation speed are controlled.

The second fifth wheel & pinion 32 has a large-diameter gear 32a having 60 teeth and a small-diameter gear 32b having 15 teeth. The second fifth wheel & pinion 32 is pivotally supported by the middle plate 13 and the upper case 12, and has a large diameter. The radial gear 32a is the rotor 31 of the second stepping motor 31
The rotation speed of the rotor 31c is reduced to a predetermined speed by engaging with c (pinion 31c '). As the second fifth wheel & pinion 32, the above-mentioned first fifth wheel & pinion 22 may be diverted, that is, the one provided with the through-hole 22c may be used. As a result, parts can be shared and the cost of the product can be reduced.

The third wheel & pinion 33 has a large diameter gear 33a having six teeth.
0, the number of teeth of the small-diameter gear 33b is formed to 10, and one end of the shaft portion is pivotally supported by the upper case 12, and the other end is rotatably disposed with the middle plate 13 penetrating therethrough. The rotation of the second fifth wheel & pinion 32 is decelerated and transmitted to the minute hand wheel. Also,
As shown in FIG. 15, ten third wheels 33 are arranged at equal intervals (central angle α3 is 36 °) in the circumferential direction in a region overlapping with the second hand wheel 23 and the first fifth wheel 22 by rotation. A circular through hole 33c is formed. The through hole 33c not only allows the detection light of the light detection sensor 40 to pass therethrough, but at least one of the through holes 33c is used as a positioning hole (determining hole) when the third wheel & pinion 33 is assembled.

The minute hand wheel 34 has a large-diameter gear 34a having six teeth.
0, the number of teeth of the small-diameter gear 34b is formed to 14, and a minute hand pipe 34p in which the small-diameter gear 34b is integrally formed is formed at the center thereof so as to form a substantially T-shape in a side view. ing. One end of the minute hand pipe 34p is rotatably supported by the middle plate 13, and the other end of the shaft is rotatably inserted into an hour hand pipe 36p of an hour wheel 36 described later. The minute hand pipe 34p penetrates through the lower case 11 and protrudes toward the dial of the timepiece. The minute hand 5 is attached to the tip of the minute hand pipe 34p.

As shown in FIG. 16, the minute hand wheel 34 has three circumferentially long circles in a region overlapping with the second hand wheel 23, the first fifth wheel 22, and the third wheel 33 by rotation. The arc-shaped through holes 34c, 34d, 34e are formed. The arc-shaped through hole 34c and the arc-shaped through hole 34d have a central angle α5
The arc-shaped through hole 34d and the arc-shaped through hole 34e are formed at a central angle α6 of 30 ° and
The arc-shaped through hole 34e and the arc-shaped through hole 34c are formed at a central angle α7 of 60 ° apart. That is, the widest light shielding portion A is formed between the arc-shaped through hole 34e and the arc-shaped through hole 34c, and the arc-shaped through-hole 34c and the arc-shaped through hole 3 are formed.
4d and between the arc-shaped through hole 34d and the arc-shaped through hole 34e, a light shielding portion B narrower than the light shielding portion A is formed.

The arc-shaped through hole 34c has a circular portion 34c 'at one end and a wide circular portion 34c''extending from the other end.
And a narrow arc portion 34c '''connecting the two. The circular portion 34c 'defined by the narrow circular arc portion 34c''' is used not only for transmitting the detection light but also as a positioning hole (determining hole) when the minute hand wheel 34 is assembled.

The hour wheel 36 has a large diameter gear 36a having four teeth.
And a cylindrical hour hand pipe 36 at the center thereof.
p is integrally attached, and at this time, the needle pipe 36
The aforementioned minute hand pipe 34p is inserted through p.
The hour hand pipe 36p is rotatably supported by being inserted into a bearing hole 11a formed in the lower case 11, and has a tip end penetrating through the lower case 11 and facing the dial face of the timepiece. The hour hand 6 is attached to the tip end side.

As shown in FIG. 17, the hour wheel 36 has a circumferentially long area in a region where the second wheel 23, the first fifth wheel 22, the third wheel 33, and the minute wheel 34 overlap with each other by rotation. Three arc-shaped through holes 36c, 36d, and 36e are formed. These arc-shaped through holes 36c and 36d are formed at a central angle α8 of 45 ° and are separated from each other.
6d and the arcuate through hole 36e are formed at a central angle α9 of 60 ° and are separated by 60 °. The arcuate through hole 36e and the arcuate through hole 36c
Are formed at a central angle α10 of 30 °, and the lengths of the arc-shaped through holes 36c, 36d, 36e are 75 °, 60 ° at the central angles β1 + β2, β3, β4, respectively.
° and 90 °. That is, the narrowest light-shielding portion C is formed between the arc-shaped through hole 36c and the arc-shaped through-hole 36d, and between the arc-shaped through-hole 36c and the arc-shaped through-hole 36d, A light-shielding portion D having a wider width is formed, and a light-shielding portion E wider than the light-shielding portion D is formed between the arc-shaped through holes 36d and 36e.

The arc-shaped through hole 36c has a circular portion 36c 'located at a central angle β1 of 7.5 ° from one end.
, A wide arc-shaped portion 36c '' extending from the other end, and a narrow arc-shaped portion 36c '''which connects the two and is located on both sides of the circular portion 36c'. The circular portion 36c 'defined by the narrow circular arc portion 36c'''
This is used not only for transmitting the detection light but also as a positioning hole (determining hole) when the hour wheel 36 is assembled.

As shown in FIG. 12, the minute wheel 35 has a large-diameter gear 35a having 42 teeth and a small-diameter gear 35b having 10 teeth, and a projection formed on the lower case 11. 11
b and is rotatably supported with respect to the large diameter gear 35a.
Meshes with a small-diameter gear 34b formed on the minute hand pipe 34p, and the small-diameter gear 35b meshes with the hour wheel 36 (36a) to reduce the rotation of the minute wheel 34 and transmit it to the hour wheel 36.

As shown in FIG. 10, the light detection sensor 40 includes a light emitting element 42 composed of a light emitting diode mounted on a circuit board 41 fixed to a wall surface of the upper case 12 and a light emitting element 42 facing the light emitting element 42. And a light receiving element 44 composed of a phototransistor mounted on a circuit board 43 fixed to the wall surface of the lower case 11.
The light-emitting element 42 and the light-receiving element 44 are connected to the control unit 7, and exchange various detection signals and control signals.

Further, as shown in FIG. 2, the first
5th wheel 22, second hand wheel 23, 3rd wheel 33, minute hand wheel 34,
All of the hour hand wheels 36 are arranged at the same overlapping position. Then, the through-hole 22c of the first fifth wheel & pinion 22, the third wheel & pinion 3
3, the through hole 23c of the second hand wheel 23, the through hole 34c (34d, 34e) of the minute hand wheel, and the through hole 36c of the hour hand wheel 36.
When (36d, 36e) overlap, the light emitting element 42
Is detected by the light receiving element 44 to output that the second hand, the minute hand, and the hour hand are pointing to a position such as an hour.

Further, the light emitting element 42 is provided in the upper case 1
The mounting recess 12c is provided in a mounting recess 12c as a first placement portion formed to open to the outside of the mounting recess 2, and a circular through hole 12d having a predetermined diameter is formed in the bottom surface of the mounting recess 12c. Since the circular through hole 12d has a property that the detection light emitted from the light emitting element 42 spreads in a divergent shape, the circular through hole 12d blocks the light in the spread portion and allows only the converged light to pass therethrough to prevent erroneous detection. It is to be. Similarly, the light receiving element 44 is disposed in a mounting recess 11c as a second placement portion formed to open to the outside of the lower case 11, and the mounting recess 11c
A circular through-hole 11d having a predetermined diameter is formed in the bottom surface of. The circular through-hole 11d allows only light emitted from the light-emitting element 42 and passing through the through-hole to pass as much as possible to prevent erroneous detection.

When assembling the first fifth wheel 22, the third wheel 33, the second hand wheel 23, the minute hand wheel 34, and the hour hand wheel 36, predetermined positioning pins are used to fit the circular through holes 11 in the lower case 11.
d, the parts are sequentially assembled so as to pass through the respective through holes used for positioning and the circular through hole 12d of the upper case 12. After the upper case 12 and the lower case 11 are joined and integrated, the positioning pin is pulled out, and the light emitting element 42 is mounted in the mounting recess 12c where the through hole 12d is located, and the mounting recess where the through hole 11d is located. The light receiving element 44 is mounted on 11c.

As shown in FIG. 2, a notch 43e is provided in one corner of the circuit board 43, and when the circuit board 43 is mounted on the defining section 16 described later, the circuit board 43 can be mounted in the defining section 16 with the pointer shaft being moved. Like that. A notch 43f is formed in the notch 43e. When the light receiving element 44 is fixed to the circuit board 43, the light receiving element 44 is fixed so as to be located in the notch 43f.

As shown in FIG. 3, the circuit board 41 is the same as the circuit board 43. A notch 41e is provided in one corner of the circuit board 41, and a notch 41f is formed in the notch 41e. When the terminals of the light emitting element 42 are fixed to the circuit board 41, the light emitting element 42
It is fixed so as to be located within 1f.

On the circuit boards 41 and 43, the light emitting element 42 and the light receiving element 44 are provided with light emitting element terminals 41c and 41d and light receiving element terminals 43c and 43d, respectively. A drive terminal 41 for driving the first stepping motor 21 and the second stepping motor 31 in the case.
a, 41b, 43a, and 43b are provided.

The circuit boards 41 and 43 are mounted on the surfaces of the upper case 12 and the lower case 11, respectively. As shown in FIG. 3, a delimiting wall 14 is integrally provided on the front side of the upper case 12 so as to surround the mounting recess 12c. The defining portion 14 is formed in accordance with the size of the circuit board 41. By fitting the circuit board 41 into the defining portion 14, the light emitting element 42 mounted on the circuit board 41 matches the mounting recess 12c. Thus, the light emitting element 42 is mounted in the recess 12c.
Further, as shown in FIG. 2, a delimiting portion 16 is integrally provided on the surface of the lower case 11 so as to surround the mounting recess 11c. The defining portion 16 is formed in accordance with the size of the circuit board 43. By fitting the circuit board 43 into the defining portion 16, the light receiving element 44 mounted on the circuit board 41 matches the mounting recess 11c. And the recess 11c
The light receiving element 44 is mounted therein. Therefore, the circuit boards 41, 4 are defined by the defining units 14 and 16.
3 becomes easy. The defining portions 14 and 16 are provided with grooves 15 and 17 at portions facing the terminals 41a to 41d and 43a to 43d, respectively.

Therefore, when the circuit board 43 is mounted in the defining portion 16 as shown in FIG. 2, the mounting concave portion 11c is arranged so as to be biased toward one end (to the right) of the cutout portion 43f.
When the circuit board 41 is inserted into the defining wall 14 as shown in FIG. 2, the mounting concave portion 12c is biased toward the other end (leftward) of the cutout portion 41f.

The light receiving element 44 and the light emitting element 42 are previously soldered to the respective circuit boards 43 and 41 in the respective notches 43f and 41f by using a jig (not shown). There are two types of jigs: a jig for soldering the light emitting element 42 to the circuit board and a jig for soldering the light receiving element 44 to the circuit board. The shape of the jig for mounting the light emitting element 42 is the same as that of the upper case 12 shown in FIG. 3, that is, the jig is mounted at a position separated by a predetermined distance from the delimiter having substantially the same size as the circuit board. It has a recess. The shape of the jig for mounting the light emitting element 42 is the same as that of the lower case 11 shown in FIG. 2, that is, a demarcation part having substantially the same size as the circuit board, and a position separated by a predetermined distance from the demarcation part. Is provided with a mounting recess. With these two types of jigs, the element and the circuit board are fixed by soldering.

With this jig, when the light emitting element is mounted on the circuit board, the light emitting element is fixed to one side of the notch of the circuit board, and when the light receiving element is mounted, the light emitting element is fixed on the other side of the notch of the circuit board. Fixed improperly. Therefore, in the step of fixing the substrate to the case, it is possible to grasp at a glance whether the element to be attached is a light-emitting element or a light-receiving element, based on the relative positions of the notch and the element. Further, for example, the circuit board 43 to which the light receiving element 44 shown in FIG.
If an attempt is made to mount the photodetector in the inside, the photodetector 44 and the mounting concave portion 42 do not match, so that the photodetector cannot be mounted, and mounting errors in the process can be prevented in advance.

Further, by providing the defining portion, external light from the side of the movement is blocked, and the concave portion 11c is provided.
External light does not enter the movement through the gap between the light receiving element 44 and the gap between the concave portion 12c and the light emitting element 42. That is, it is possible to prevent external light from entering the inside of the movement from the connecting surface of the not-shown front frame and the not-shown clock frame that houses the not-shown control unit, the dial, the movement 10, and the like.

Next, the socket 60 attached to the movement 3 will be described with reference to FIGS.
The socket 60 is formed of a synthetic resin, has a substantially U shape in a side view, and has a pair of left and right wall surfaces 60e and 60f formed in parallel to each other as shown in FIG. Further, projecting walls 60g, 60h are formed so as to project from the wall surfaces 60e, 60f, respectively. The width E of the pair of wall surfaces 60e and 60f is set substantially equal to the width K from the surface of the upper case 12 to the surface of the lower case 11 shown in FIG.

A concave portion is formed in each of the inner surfaces of the wall surfaces 60e and 60f, and a rod-shaped conductive pin 6 described later is formed in the concave portion.
0a, 60b, 60c, and 60d are arranged. The widths of the protruding walls 60g and 60h are set substantially equal to the widths of the cutouts 17 and 15 provided in the defining portions 14 and 16. Further, the heights of the wall surfaces 60e, 60f are set substantially equal to the distance from the end surfaces of the cases 11, 12 to the defining portions 14, 16.

Each of the conductive pins 60a to 60d is made of a conductive material such as a metal. As shown in FIG. Have been. Conductive pins 60c and 60d are disposed on the inner surfaces of the wall surface 60e and the protruding wall 60g, and conductive pins 60a and 60b are disposed on the inner surfaces of the wall surface 60f and the protruding wall 60h. As shown in FIG. 7, the same number of conductive pins 60a to 60d as the device terminals and the drive terminals are arranged.

The socket 60 is connected to the movement 3
When fixing to the case, the sockets 60 are inserted from the side surfaces of the cases 11 and 12, and the projecting walls 60h and 60g are inserted into the cutouts 15 and 17, respectively. As shown in FIG. 5, when the socket 60 is attached to the cases 11 and 12, the light receiving element terminals 43 c and 4
3d is in contact with one end of a pair of conductive pins 60d, 60d, and motor drive terminals 43a, 43b provided on the substrate 44 are respectively connected to the conductive pins 60c, 60c.
Contact one end of the Therefore, the light receiving element terminal 43
c, 43d and the motor drive terminals 43a, 43b can be arranged on the side surfaces of the cases 11, 12.

As shown in FIG. 5, the light emitting element terminals 41c and 41d provided on the substrate 43 come into contact with one ends of the pair of conductive pins 60b and 60b, respectively.
Of the pair of conductive pins 60a, 60a, respectively, come into contact with one end of the pair of conductive pins 60a, 60a. Therefore, the light emitting element terminals 41 c and 41 d and the motor drive terminals 41 a and 41 b can be arranged on the side surfaces of the cases 11 and 12.

When the socket 60 is mounted on the case 11, 12, the light receiving element terminals 43c, 43 are connected by the conductive pins.
d and the other ends of the light emitting element terminals 41c, 41d and the motor drive terminals 41a, 41b, 43a, 43b are arranged on the side surfaces of the cases 11, 12, so that these terminals and the lead wires of the control unit 7 Connection becomes easy.

In this embodiment, as shown in FIG. 8, the socket has a U-shape when viewed from the side. However, the present invention is not limited to this. , May be attached to both cases. Also,
The shape of the socket may be, for example, a clothespin shape, and the light emitting element terminal, the light receiving element terminal and the conductive pin may be brought into contact with each other so as to sandwich the two substrates. In addition, the other end of the conductive pin protrudes toward the side surface of both cases, but may protrude toward the upper case in the same direction as the pointer pipe, for example.

Next, the time correction operation of the radio-controlled timepiece will be described. FIG. 18 shows an embodiment of time correction. Here, the first fifth wheel 22, the second hand wheel 23,
The third wheel 33, the minute wheel 34, and the hour wheel 36 are driven to rotate by step driving of the first stepping motor 21 and the second stepping motor 31 controlled by respective control units. At this time, the first fifth wheel & pinion 22 is driven and controlled by the step driving of the first stepping motor 21 so as to make one rotation in 15 steps.
3 rotates once in 60 steps. On the other hand, the third car 33
By the step driving of the second stepping motor 31, 6
The drive is controlled so as to make one rotation in 0 steps, and as a result, the minute hand 34 makes one rotation in 360 steps and the hour hand 3
6 rotates once in 4320 steps. In this case, the first fifth wheel & pinion 22 allows the detection light to pass once every five steps driven by the first stepping motor 21, and the third wheel & pinion 33 is driven by the second stepping motor 31 for six steps. Each time the detection is performed, the detection light is passed once.

As shown in FIG. 18, to start the time correction, the start switch is turned on, and the light emitting element 42, that is, the light emitting diode is activated to emit the detection light (S1). Subsequently, the first stepping motor 21
And the second stepping motor 31 are simultaneously pulse-driven at the same output frequency, so that the second hand wheel 23 and the minute hand wheel 34
(And the hour wheel 36) is driven to rotate (S2). next,
It is determined whether there is an output from the light receiving element 44, that is, the phototransistor (S3).

Here, when there is no output from the phototransistor, the first stepping motor 21 and the second
The stepping motor 31 is pulse-driven and the second hand wheel 23
And the minute hand wheel 34 (and the hour hand wheel 36) are rotationally driven.
On the other hand, if there is an output from the phototransistor, the second hand wheel 23 and the minute hand wheel 34 (and the hour hand wheel 36) are temporarily stopped (S4), and thereafter, the second hand wheel 23 is rapidly advanced (S4).
5) The coincidence with the output pattern stored in advance in the control unit is detected (S6), and if the obtained output pattern does not match the stored output pattern, the second hand wheel 23 is again turned on.
Is fast forwarded. On the other hand, if the obtained output pattern matches the stored output pattern, the second hand wheel 23 is stopped at that time (S7). At this time, the second hand
Second).

Subsequently, only the second step motor 31 is pulse-driven to rapidly feed the minute hand wheel 34 (S8). Then, coincidence between the output pattern from the phototransistor and the output pattern stored in advance in the control unit is detected (S
9) If the obtained output pattern does not match the stored output pattern, the minute hand wheel 34 is fast-forwarded again. On the other hand, if the obtained output pattern matches the stored output pattern, the second stepping motor 31 is stopped at that time, and the driving of the minute hand wheel 34 and the hour hand wheel 36 is stopped (S10).

Here, the time correction based on the coincidence between the output pattern and the previously stored pattern is performed by adjusting the time to one of the three types of patterns in the same manner as described above. In other words, as shown in FIG. 19A, the output pattern of the phototransistor by the minute hand 34 has two narrow B
And the wide A portion alternately appears. The output pattern of the phototransistor by the hour wheel 36 has an OFF width at which the light shielding portion acts as shown in FIG. 19B. A pattern in which three types of D, E, and C portions appear alternately at predetermined intervals, and an output pattern obtained by combining the two is shown in FIG. 19C.
Part, B part and A part combined pattern, E part,
A pattern in which a part B and a part A are combined and a pattern in which a part C, a part B and a part A are combined appear at predetermined intervals.

Therefore, when a pattern composed of a combination of the part D, the part B and the part A is confirmed, for example, at 4:00.
Minute, when a pattern composed of a combination of E, B, and A is confirmed, for example, 8:00, and when a pattern composed of a combination of C, B, and A is confirmed, 12:00. If the second stepping motor 31 is stopped when any of these patterns is detected, the minute hand wheel 34 and the hour hand wheel 3 are set.
6, that is, the minute hand and the hour hand can be adjusted to a predetermined time.

After the second stepping motor 31 is stopped, the output of the light emitting diode is turned off to stop the light emission (S11), and the time correction operation ends.

In this specific example, the first drive system for driving the second hand and the second drive system for driving the minute hand and the hour hand are shown separately. However, the first drive system for driving the minute hand and the hour hand are driven. A second drive system is adopted, the minute hand is a first hand, a minute hand directly connected to the minute hand is a first hand wheel, a minute hand pipe directly connected to the minute hand is a first hand pipe, an hour hand is a second hand, and an hour hand. It is also possible to adopt a configuration in which an hour hand wheel directly connected to the second hand wheel is a second indicator wheel, and an hour hand pipe directly connected to the hour hand wheel is a second indicator pipe.

In this embodiment, the light emitting element 42 is attached to the upper case 12 and the light receiving element 44 is attached to the lower case 11. The light emitting element 42 is attached to the lower case 11, and the light receiving element 44 is attached to the upper case 12. The element 44 may be attached.

[0058]

As described above, according to the structure of the present invention, when connecting the terminals of the element to the control section, the element provided on the first substrate and the second substrate can be simply mounted on the case. The terminal for contact and the conductive part are in contact with each other, and connection is easy.

Further, when the timepiece is disassembled for repair or the like, the connection between the element terminal and the control unit is released simply by removing the socket from the case, so that the disassembly is easy.

[Brief description of the drawings]

FIG. 1 is a plan view showing a radio-controlled timepiece according to a specific example.

FIG. 2 is a plan view showing the appearance of the movement of the specific example.

FIG. 3 is a rear view showing the appearance of the movement of the specific example.

FIG. 4 is a side view showing the appearance of the movement of the specific example.

FIG. 5 is a plan view when a socket is mounted on the movement of the specific example.

FIG. 6 is a rear view when the socket is mounted on the movement of the specific example.

FIG. 7 is a side view when the socket is mounted on the movement of the specific example.

FIG. 8 is a side view showing the socket of the specific example.

FIG. 9 is a plan view showing the internal structure of the movement of the specific example.

FIG. 10 is a longitudinal sectional view of the movement of the specific example.

FIG. 11 is a plan view showing a first drive system that drives a second hand that is a part of the movement.

FIG. 12 is a plan view showing a second drive system that drives a minute hand and an hour hand, which are part of a movement.

FIG. 13 shows a first driving system forming a part of a first driving system for driving the second hand.
FIG.

FIG. 14 is a plan view showing a second hand wheel forming a part of a first drive system that drives the second hand.

FIG. 15 is a plan view showing a third wheel that forms part of a second drive system that drives the minute hand and the hour hand.

FIG. 16 is a plan view showing a minute hand wheel that forms part of a second drive system that drives the minute hand and the hour hand.

FIG. 17 is a plan view showing an hour wheel that forms part of a second drive system that drives the minute hand and the hour hand.

FIG. 18 is a flowchart in the case where the time is corrected in the radio-controlled timepiece.

FIG. 19 is a graph showing an output pattern of a minute hand wheel, an hour hand wheel, and a detecting means based on a combination of the two in the correction shown in FIG. 18;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Radio-controlled timepiece 2 Antenna 3 Movement 7 Control part 11 Lower case 11c Mounting recessed part 11d Circular through hole 12 Upper case 12c Mounting recessed part 12d Circular through hole 14 Defining part 16 Defining part 20 First drive system 21 First stepping motor (First Drive source) 30 second drive system 31 second stepping motor (second drive source) 32 second fifth wheel 40 light detection sensor (detection means) 41 circuit board 42 light emitting element 43 circuit board 44 light receiving element 60 socket 60a- 60d Conductive pin 60e, 60f Wall surface 60g, 60h Projecting wall

Claims (1)

[Claims] A first drive system for driving a first hand; a second drive system for driving a second hand; a first hand wheel directly connected to the first hand; Detecting means for detecting that a second pointer wheel, which is directly connected to the pointer, is positioned at a position corresponding to a predetermined time based on a time signal; and detecting a time at a predetermined time based on an output signal of the detecting means and the time signal. An automatic correction timepiece movement for performing automatic correction of the above, wherein the detection means comprises a light-emitting element for emitting detection light and a light-receiving element for receiving a detection light emitted from the light-emitting element and outputting a signal to output a signal. A first case, a first case and a second case, which are coupled to each other so as to cover and surround the first drive system and the second drive system; and a first substrate provided with the light emitting element and a light emitting element terminal. And the light receiving element and the light receiving element And a second substrate provided with terminals for use, wherein the first case is provided with a first through hole for disposing the light emitting element, and the second case is disposed with the light receiving element A second through hole is provided for fixing the first substrate to the first case so that the light emitting element is disposed in the first through hole; and the light receiving element is provided in the second through hole. The second substrate is fixed to the second case so as to be disposed, and has a conductive portion having one end in contact with the light emitting element terminal and the light receiving element terminal and the other end extending outside the case. Movement for self-correcting watches characterized by the mounting of a socket.