JPS6212307Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a switch structure for a battery-powered timepiece in which input is performed using a plurality of external operating members.

[Conventional technology]

As battery-powered watches, especially digital battery-powered watches that display the time on a liquid crystal display, become multifunctional, the number of external operating members increases, and the number of switch springs disposed in the movement also increases.

[Problem that the invention attempts to solve]

In such a conventional configuration, the number of parts increases significantly because the switch springs are provided according to the external operating members, which goes against the trend of miniaturization, and it is not possible to set a sufficient spring length for miniaturization. There was a problem.

The present invention solves these problems, reduces the number of parts in the switch structure, and provides a configuration that can be adapted to miniaturization.

[Means for solving problems]

The switch structure of the battery watch of the present application includes an oscillation device using a crystal as a vibration source, a liquid crystal panel display device that displays the time, a circuit device that drives and controls the two devices, and supports the circuit device. A circuit case having a thin circuit board, a dowel in which the circuit board is installed and fixed, and a battery storage hole, and a circuit case provided at a distance on a side surface of the circuit case and movable in the axial direction. In a switch structure for a battery watch having at least two attached external operating members and a spring plate-like conductive member that cooperates with each of the external operating members and operates as a switch, the spring plate-like conductive member , an electrode of the circuit board that is electrically connected to the circuit device and a spring part that is in pressure contact with the side surface of the battery; and a dowel of the circuit case that is held between the circuit case and the circuit board, and the circuit case together with the circuit board. a fixing part that is caulked and fixed to the external operating member, and an operating part that is bent so as to come into contact with the external operating member at a substantially right angle and closely contacts the external operating member at the same height position as the external operating member and operates as a switch spring; A connecting part that connects to the fixed part is provided at the center of the operating part, and the operating part is bent toward the back cover side at the connecting part and is disposed in the recess of the circuit case. do.

〔Example〕

FIG. 1 is an assembled plan view showing an embodiment of the present invention, and FIGS. 2 to 5 are assembled sectional views. A MOS-IC 2 is bonded to the finger portion 1a of an electrode pattern formed on a thin circuit board 1 that is automatically transported, and then molded with a molding material 3, and further a trimmer capacitor 4 and a crystal vibrator are attached. Child unit 5, boost capacitor 6
A, 6b are fixed one after another by soldering, and then the thin plates are cut to form a circuit. Further, spring plate-like conductive members 7, 8, 9 having elastic spring portions are placed under the circuit board. , a dowel 10 provided in a circuit case 10 made of thermoplastic plastic material.
A is used as a guide, and the circuit block 11 is formed by assembling the dowel 10a and fixing it to the circuit case 10 by thermally caulking the dowel 10a. Spring portion 7 of the conductive member 7
a is in pressure contact with the pole of the battery 12, the spring part 7b is in pressure contact with the electrode 1b provided on the circuit board 1, the spring part 8a of the conductive member 8 is in pressure contact with the side pole of the electrode 12, and the spring part 8b is in pressure contact with the electrode 1b provided on the circuit board 1. Electrical energy is supplied to the circuit by press-contacting the electrode 1c which is electrically connected to the circuit device provided in 1.

In the above configuration, the switch structure is constituted by the spring plate-like conductive members 7, 8 which cooperate with the buttons 13, 14, 15 which are external operating members, come into contact with the circuit device, and serve as a switch spring. The spring plate-like conductive member 8 is a spring portion 8 that is in pressure contact with the electrode 1c that conducts with the circuit device of the circuit board 1 and the side surface of the battery 12.
a, 8b, a fixing part that is clamped between the circuit board 1 and the circuit case 10 by the dowel 10a of the circuit case 10 and fixed to the circuit case 10 by caulking, and a connecting part 8e formed on the fixing part. A switch operating section 8c is arranged between the recesses of the circuit case.
The switch operating part 8c and the fixed part are bent at a nearly right angle at the connecting part 8e, and the button 13,
It is located close to 14. Note that the buttons 13 and 14 are arranged with an interval between them, so that, for example, when one button 13 is activated, the button 13
In addition to the elastic force due to the bending of the operating part of the part facing the , the torsional force of the connecting part 8e and the other button
Since the operating portion of the portion facing the holder also flexes, sufficient spring force can be obtained in a small amount of space. The operating part 8c forms a switch with an electrode part that is provided on the surface of the circuit case and conducts to the circuit device, and is made waterproof by a gasket 26 in the side hole of the pipe part 10b provided in the circuit case 10. The buttons 13, 14, and 15 are incorporated in the button 1, and the button 1 is attached with a stopper 16 so as not to come off.
3 and 14, and the operating part 8c of the spring plate-like conductive member 8 is always in close contact with the tip of the button, and when the button is pressed, the switch part is turned on to change the time display mode and correct the time. We are making it possible to do this.

A lamp 17 is fixed to the bent portion 8a of the conductive member 8 and the bent portion 9a of the conductive member 9 in a conductive manner,
Spring portion 9b provided on the conductive member 9 and the conductive member 7
A switch is formed between the switch and the bent portion 7c provided in the front panel, and lamp illumination is performed by pressing the button 15 in the same manner as described above.

A liquid crystal panel 20 to which a reflecting plate 18, conductive rubber 19a, 19b, polarizing plate, filter, etc. are pasted is assembled into the circuit block 11 having the above functions, and convex portions 21a, 21b provided on a panel holder 21 are assembled in this order.
It is attached to the circuit case 10 by engaging the recesses 22a and 22b provided in the circuit case 10.

Further, the protruding portion 1f of the circuit board 1 directly below the lamp 17 is bent, a copper foil is left on the upper surface of the protruding portion 1f, and white plating is provided on this copper foil to direct the light from the lamp 17 to the lower and side surfaces. The light is reflected from the light to further enhance the lighting effect.

The circuit block 11 is assembled into a back cover 23 made of a thin plate, and the exterior assembly is performed while fixing the module by engaging the dowel 23a provided in the back cover 23 with the groove 25a provided in the protrusion 25 via the packing 24.

The battery 12 is held in the watch by bayonet fixation between a protrusion 26 provided in the battery storage hole of the circuit case 10 and a recess 28 of the battery cover 27. The gasket 29 provides a waterproof effect to the battery cover portion.

[Effect of idea]

As described above, according to the configuration of the present application, the switch structure of a battery-powered watch includes a spring plate-shaped conductive member that serves as a switch that comes into contact with an electrode part that conducts with a circuit device, and a spring part that comes into contact with an electrode of a circuit board and a side surface of a battery. Consisting of a fixing part disposed under the circuit board on the circuit case and fixed by caulking, an operating part facing at least two external operating members, and a connecting part connecting the center of the operating part and the fixing part. This makes it possible to reduce the number of spring parts and prevent warping of the circuit board, and the fixed part and operating part are arranged at almost right angles by bending the connecting part, making it possible to reduce the number of spring parts compared to the past. Since it is placed in close contact with the operating member at the same height and in the recess of the circuit case, when the external operating member is operated, the torsional force of the bent part can be used as elastic force in addition to the elastic force of the operating member, and the circuit It can provide sufficient spring force even when placed in a space with few recesses in the case, and can be adapted to miniaturization of watches. Furthermore, because the tip of the operating part of the spring-like conductive member is always in contact with the tip of the external operating member, the external operating member is pushed outward from the watch by the elastic force of the operating part, so that the external operating member protrudes. The position can be kept constant, and even during operation, a constant reaction force allows for smooth operation.

[Brief explanation of the drawing]

FIG. 1 is an assembled plan view showing an embodiment of the present invention, FIGS. 2 and 3 are assembled sectional views, and FIGS. 4 and 5 are partially assembled sectional views. 1... Tape-shaped circuit board, 2... MOS-
IC, 4... Trimmer capacitor, 5... Crystal resonator unit, 6... Boost capacitor, 7, 8,
9... Conductive member, 11... Circuit block, 10...
...Circuit case, 12...Battery, 13, 14, 15
... Button, 16 ... Button stopper, 17 ... Lamp, 18 ... Reflector, 19a, 19b ... Conductive rubber, 20 ... Liquid crystal panel, 21 ... Panel presser, 23 ... Back cover, 24 ...Urabuta Patsukin,
25...Copper, 27...Battery pig, 29...Battery pig Patsukin.

Claims (1)

[Scope of utility model registration request] an oscillation device using a crystal as a vibration source; a liquid crystal panel display device for displaying time; a circuit device for driving and controlling the two devices; a thin circuit board supporting the circuit device; A circuit case provided with a dowel into which a circuit board is assembled and fixed and a battery storage hole, and at least two pieces installed at a distance from each other on the side surface of the circuit case and movable in the axial direction. In the switch structure of a battery watch, the battery watch has an external operating member, and a spring plate-like conductive member that cooperates with each of the external operating members and operates as a switch, wherein the spring plate-like conductive member is connected to the circuit device of the circuit board. a spring part that presses into contact with the electrode and the side surface of the battery; and a fixing part that is held between the circuit case and the circuit board and is caulked and fixed to the circuit case together with the circuit board by a dowel of the circuit case. , an operating part that is bent so as to come into contact with the external operating member at a substantially right angle and operates as a switch spring by closely contacting the external operating member at the same height as the external operating member; A switch structure for a battery watch, characterized in that a connecting part is provided to connect to a fixed part, and the operating part is bent toward the back cover side at the connecting part and disposed in a recessed part of the circuit case.