JPS5848078B2 - densid cay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The biggest disadvantage of using batteries as an energy source is the hassle of replacing the batteries when their lifespan has expired.

Particularly in the case of electronic watches, because the mechanical body is small, it is extremely difficult to replace the battery.

The present invention is intended to facilitate this battery replacement and to prevent incorrect insertion direction of the battery due to the special shape of the watch battery.

Traditionally, battery devices for electronic watches have been made by pressing the battery into the movement, using a conductive elastic member called a battery lead plate, or by holding and supporting the battery with the battery cover of the watch case. It was getting worse.

The present invention is intended to attach a battery to a battery cover, and will be described in detail below with reference to the drawings.

FIGS. 1A and 1B are cross-sectional views showing a typical embodiment of a conventional battery mounting means.

1 is a base plate, 2 is a battery insulating frame, 3 is a battery negative lead plate, 4 is a battery, and 5 is a battery brass lead plate.

According to FIG. 1A, the battery 4 is vertically suppressed and supported by the base plate 1 and the battery cover 6 via the battery insulating frame.

Each pole of the battery is connected to the circuit via the battery negative lead plate from the battery cover (e pole) and the brass lead plate from the side of the chisel (■ pole).

Figure 1-B shows battery fixing without using the battery cover.
This is done by

In both cases, the battery 4 was attached to the movement side.

According to the means as shown in FIG. 1A, when the battery cover is removed when replacing the battery, the battery may fly out due to the elasticity of the battery negative lead plate 3, and when the battery is inserted, the battery negative lead plate 3 and the battery Due to the springiness of the positive lead plate 5, the battery did not settle properly, and the threaded portion 6a of the battery cover 6 and the threaded portion 8a of the case body 8 did not fit together.

If a battery press is used as shown in Figure 1-1B, there is the hassle of removing and attaching the battery press when replacing the battery, and the diameter of the battery cover also needs to be made thicker. It was a disadvantage.

For this reason, when using a battery pusher, the battery cover is usually not used, making battery replacement very inconvenient.

In order to eliminate the above drawbacks, for example, if you set the spring force of the battery brass lead plate 5 to be sufficiently larger than the spring force of the battery negative lead plate 3 to stably fix the battery to the movement, the case battery It had the disadvantage that it was difficult to remove the battery from the lid.

FIG. 2 shows an embodiment of the present invention, in which, contrary to FIG. 1, a 6K battery 4 with a battery cover is attached.

According to this, when the battery cover 6 is removed, the battery 4 is attached to the battery cover 6VC-11, so the battery can be replaced at a location away from the watch body, thereby eliminating the troubles mentioned above. .

Figures 3 and 3B show an example of the structure of a battery cover for this purpose.

According to FIG. 3-1A, a cylindrical portion 6b is provided in a part of the battery cover 6, a portion of the cylindrical portion 6b is cut to have elasticity, and the battery 4 is suppressed and supported by the elastic portion 6c. be.

In FIG. 3B, a plate spring 9 is inserted between the inner wall surface of the cylindrical portion 6b of the battery cover 6 and the outer periphery of the battery, thereby supporting the battery.

Further, the cylindrical portion of the battery cover 6 has a dimensional relationship as shown in FIG.

That is, the battery insertion depth H of the battery cover cylinder part 6b is greater than the height h2 from the bottom of the chisel to the corner of the chisel bottom corner of the battery 4, and the height from the top surface of the battery lid to the height of the chisel shoulder O is set smaller than h2.

Watch batteries have a unique shape compared to commonly used dry batteries, and often have a positive and negative polarity.

Sometimes I inserted it in the wrong direction.

However, if the dimensions of L7 are as described above, the battery can be installed by inserting it into the battery cover from the direction of the bottom of the battery.
On the other hand, if the battery cover is inserted from the 3 direction (indicated by the two-dot chain line in FIG. 4), the VC cannot be installed, and there is no need to insert the battery in the wrong direction.

Therefore, there is no need to specifically indicate the battery insertion direction on the movement or part of the case.

Connection between the battery and the circuit can be made by the battery negative lead plate 3 and the battery brass lead plate 5 as in the conventional manner.

The present invention is as described above, and allows anyone to easily replace the battery of an electronic watch.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional battery mounting structure. FIG. 2 is a sectional view showing the battery mounting structure of the present invention. FIG. 3 is a perspective view showing a battery cover structure according to the present invention. FIG. 4 is a sectional view showing the dimensional relationship of the battery mounting part according to the present invention. 1... Base plate, 2... Battery insulation frame, 3.
...Battery negative lead plate, 4...Battery, 5...Battery brass lead plate, 6...
Battery cover, 7... Battery presser 8... Case body, 9... Battery presser screw, 10...
Third receiver, 11...back cover.

Claims (1)

[Claims] 1. An electronic watch that uses a flat battery as an energy source and has a battery cover in a watch case is fitted with a button, a substantially cylindrical mounting part having elasticity in the radial direction is integrally formed on the battery cover, and the substantially cylindrical mounting part is provided with a button. When the flat battery is fitted, the mounting depth of the battery mounting part is shallower than the height of the top surface of the lid of the battery at the shoulder part of the chisel, and the rounded part of the corner of the chisel bottom is lower than the height of the chisel bottom of the battery. An electronic watch that is characterized by a deeper shape than its height.