JPS6140076B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery housing structure for an electronic wristwatch, and more particularly to a structure for housing a battery that is thin and has a large area.

Generally, a battery used in an electronic wristwatch is housed in a groove provided in a module frame of the electronic wristwatch, and a terminal that contacts the electrodes of the battery is formed in the groove and connected to a substrate provided with an electronic circuit. However, if the thickness of the battery is very thin and the diameter is approximately the same size as the watch module, it is difficult to provide a groove in the module frame and form a terminal in the groove.

The present invention has been made in view of the above-mentioned points, and provides a completely new storage structure for an electronic wristwatch, which has a structure that serves both as a board holding fitting and a battery storage section. The present invention will be described in detail below with reference to the drawings.

FIG. 1 is an exploded view showing an embodiment of the present invention,
module frame 1, substrate 2, insulation sheet 3,
It consists of a fixture 4 and a battery 5.

The module frame 1 is made of synthetic resin and has a disk shape, is hollow inside, has a liquid crystal display device for digitally displaying the time on the top surface, and has a protrusion 6 formed on the side surface for locking the fixing metal fitting 4. There is. Board 2
Electronic components such as an LSI 7 are fixed on the top to form a clock circuit, and electrodes 8 and 9 to which battery voltage is supplied are provided on the back. The insulation sheet 3 is the substrate 2
Upper electrodes, conductive paths, etc. and battery 5 or fixing metal fittings 4
A terminal plate 10 is provided in the center so as to penetrate the insulating sheet 3 so as not to come into contact with each other unnecessarily. The above-described substrate 2 and insulating sheet 3 are fixed to the module frame 1 by means of fixing fittings 4. The fixing fitting 4 is a stainless steel plate formed into a ring shape by pressing or the like, and fixing parts 12 with holes 11 are bent at four locations on the outer periphery. It is fixed by hooking it onto the protrusion 6 of the Yule frame 1. Furthermore, a positioning piece 13 for housing the battery 5 is provided on the inner periphery of the fixture 4, and the positioning piece 13 also functions as an electrode terminal that comes into contact with an electrode on the outside of the battery 5. Furthermore, a board 2 is attached to the inner circumference of the fixing fitting 4.
has a contact piece 14 that contacts the electrode 9 provided on the
This contact piece 14 applies the voltage to the outer electrode of the battery 4 to the timepiece circuit. Furthermore, if necessary, a switch contact piece 15 may be bent and provided on the outer periphery of the fixture 4, and a switch electrode 16 may be provided on the side surface of the substrate 2, so that a switch operation can be performed by contact between these pieces.

Fixing bracket 4 fixed to module frame 1
When the battery 5 is inserted in line with the positioning piece 13 of Due to the pressure with which the battery 5 is inserted, it comes into contact with the electrode 8 of the substrate 2, and the battery voltage is applied to the clock circuit.

FIG. 2 is a plan view (a) and a cross-sectional view (b) taken along the line A-A' to show the shape of the fixture 4 in detail. Fixing bracket 4
is formed into a ring shape as described above, and includes a flat part 17 that presses the substrate 2 and the insulating sheet 3, four fixing parts 12 bent at approximately right angles to the flat part 17, and the fixing parts 12. A positioning piece 13 bent in the opposite direction and formed into a circular shape approximately equal to the outer diameter of the battery 5
and contact pieces 14 formed at four notches 18 provided in the positioning piece 13. Further, if necessary, the switch contact piece 15 is bent around the outer periphery of the flat portion 17 and provided so as to extend to the switch electrode 16 of the substrate 2. In this structure, there are four contact pieces 14, but if the contact between the outer electrode of the battery 5 and the positioning piece 13 becomes unstable,
Two of the four contact pieces 14 are used for contact with the battery 5, and the other two are used for contact with the electrode 9 of the substrate 2.

FIG. 3 is a plan view of the insulating sheet 3. The insulating sheet 3 is provided with a hole 19 for trimmer adjustment and a hole 20 for taking out a test terminal, and as described above, a terminal board 10 is provided in the center. It is being
The terminal board 10 is formed to have a narrow width at the center, and a tongue piece 21 that makes contact with the board 2 is provided there. It is fixed by being bitten into it. In addition to the holes 19 and 20, the insulating sheet 3 is provided with two notches 22 on the circumference.
The contact piece 14 of the fixture 4 is located at the electrode 9 of the substrate 2.
It also positions the insulating sheet 3 to prevent rotation and displacement of the insulating sheet 3.

As described above, according to the present invention, a board is fixed to a module frame with a fixing metal fitting via an insulating sheet provided with a terminal plate, and a positioning piece, a contact piece, or a switch contact piece for storing a battery is provided in the fixing metal fitting. By providing a battery, it is possible to store a battery with approximately the same diameter as the clock module, and by simply inserting the battery, the battery voltage is applied to the clock circuit on the board, eliminating the need for special wiring or soldering. It can be switched on and off without any need for a switch, and can also be attached to a case made of synthetic resin. Furthermore, since the fixture has multiple functions, the number of parts is reduced, and the assembly of the watch module is greatly simplified and costs are reduced, which is a significant effect.

[Brief explanation of the drawing]

Fig. 1 is an assembly diagram showing an embodiment of the present invention, and Fig. 2 is a plan view a and A- of the fixing fitting shown in Fig. 1.
A' sectional view b and FIG. 3 are plan views of the insulating sheet shown in FIG. 1. 1...module frame, 2...board, 3...
...insulating sheet, 4...fixing metal fittings, 5...battery.

Claims (1)

[Scope of Claims] 1. A battery storage structure for an electronic wristwatch, which has a fixing metal fitting for fixing a board on which an electronic circuit is formed to a module frame on which a time display device is attached and for storing a battery, wherein the fixing metal fitting comprises: A bent fixing part formed in a ring shape and hooked on the module frame, a ring-shaped positioning piece bent in a direction opposite to the fixing part and regulating the battery, and an electrode provided on the board and electrically connected to each other. and a switch contact piece bent inward to make contact with the circuit board, and a switch contact piece bent on the side of the circuit board, and between the board and the fixing fitting there is a board electrode and a battery in the center. 1. A battery storage structure for an electronic wristwatch, characterized in that a substrate and an insulating sheet are crimped to the module frame with an insulating sheet provided with a terminal plate for electrical connection. 2. The battery storage structure for an electronic wristwatch according to claim 1, wherein the insulating sheet is positioned by a contact piece provided on the fixture.