JP3155159B2 - Battery watch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery wristwatch which is driven by a battery and displays time in analog and / or digital manner. In particular, the present invention relates to a battery using a relatively thin battery having a large outer diameter, such as a lithium battery.

[0002]

2. Description of the Related Art Conventionally, in a battery wristwatch of this type, a battery holding portion is provided on a circuit reinforcing plate, and a battery mounted on the circuit reinforcing plate is elastically detachably held by the battery holding portion. .

[0003] Alternatively, the battery has been held down from above with another member.

[0004]

However, in the former case, since the screws are used to fix the circuit reinforcing plate itself, there is a problem that the number of parts increases accordingly.

On the other hand, in the latter case, there is a problem that the whole wristwatch becomes thick because another member is provided outside the battery. In addition, when replacing the battery, it is necessary to remove and reattach other members, and there is a problem that the replacement of the battery is troublesome. In addition, merely holding down with another member does not hold the battery sufficiently, and has a problem that the battery rattles.

SUMMARY OF THE INVENTION It is an object of the present invention to securely hold a battery easily without changing the number of parts.

[0007]

Therefore, a battery wristwatch according to the present invention has a plurality of hook portions 13 which are detachably hooked to a base plate 10 and a battery 17 which can be detached, as shown in the following embodiments, for example. It is characterized in that a plurality of battery holders 14 held by elastic force are provided on the outer periphery of the circuit reinforcing plate 12.

[0008]

Then, at the time of assembling, the hook portion 13 is hooked to the base plate 10 and the circuit reinforcing plate 12 is attached, and then the battery 17 is inserted and elastically held by the battery holding portion 14. When replacing the battery, the battery 1 is pressed against the elastic force of the battery holding portion 14.
7 is removed, replaced with a new battery 17, and held again elastically by the battery holder 14.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an internal clock body of a battery wristwatch according to an embodiment of the present invention. FIG.
Is a plan view of the same.

Reference numeral 10 in the figure is a ground plane. Various parts 11 such as an insulating seat, a train wheel bridge and a circuit block are assembled on the surface of the base plate 10, and a circuit reinforcing plate 12 is mounted thereon.

The circuit reinforcing plate 12 in the illustrated embodiment has a plate shape.
It has a shape as shown in FIG.
3 has three battery holders 14. Symbol 1 in the figure
Reference numeral 5 denotes an elastic piece for an EL switch.

As shown in FIG. 4, each of the three hooks 13 extends in a band shape and is bent downward from the middle to form a widened portion 13b at the tip of the band portion 13a.

On the other hand, as shown in FIG. 5, each of the three battery holders 14 is extended in a band shape slightly wider than the band portion 13a of the hook portion 13 and bent upward in the middle.
It is folded in stages so that the tip points inward.

Then, as shown in FIG.
The circuit reinforcing plate 12 is positioned from above and mounted thereon.

By the way, at this time, on the outer peripheral portion of the base plate 10 corresponding to the three hook portions 13, as shown in FIG.
On the upper surface, a guide surface 10a inclined toward the outer periphery, and on the peripheral surface, a concave groove 10 wider than the width a of the band portion 13a of the hook portion 13.
b, a fitting recess 10c wider than the width b of the widened portion 13b of the hook portion 13 is formed on the bottom surface.

Therefore, the circuit reinforcing plate 12 is mounted on the various parts 11.
7, the tips of the three hook portions 13 respectively hit the guide surfaces 10a of the base plate 10, as indicated by the alternate long and short dash lines in FIG. When further depressed from that position, the widened portion 13b slides on the guide surface 10a, and the hook portion 13 opens outward as shown by a two-dot chain line in FIG. When further depressed, a part of the band portion 13a is
b and moves downward while the widened portion 13b contacts the outer peripheral surface of the main plate 10.

Then, when the plate surface of the circuit reinforcing plate 12 hits any member of the various parts 11, the band portion 13 a
Enters the concave groove 10b, and the widened portion 13b
8 (A) to 8 (C). Then, the upper end surface 13c of the widened portion 13b is hooked on the step portion 10d of the fitting concave portion 10c, and the circuit reinforcing plate 12 is mounted on the various components 11, and the various components 11 and the circuit reinforcing plate 1 are attached .
Fix 2

Thereafter, as shown in FIG.
6, a lithium battery 17 is attached. Then 3
The two battery holders 14 are pushed open against their elastic force and assembled into the circuit reinforcing plate 12 as shown in FIGS. 1 and 2, and the individual battery holders 1 are held around the periphery as shown in FIG.
At step 4, the lithium battery 17 is detachably held by the elastic force.

In the illustrated embodiment, three hooks 13 are provided on the circuit reinforcing plate 12 and three battery holders 14 are provided. However, it goes without saying that the number of hook portions and the number of battery holding portions are not limited to three.

[0020]

As described above, according to the present invention, the hook portion is hooked to the ground plate to attach the circuit reinforcing plate, and the circuit reinforcing plate is not fixed with screws as in the prior art, so that the number of parts can be reduced. Furthermore, since the watch is not held down from above by using other members as in the past, the entire wristwatch can be made thin, and the replacement of the battery is not troublesome, and the battery is securely held without play. Can be.

[Brief description of the drawings]

FIG. 1 is a front view of an internal clock body of a battery watch according to an embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a plan view of a circuit reinforcing plate used therein.

FIG. 4 is an enlarged perspective view of the hook portion.

FIG. 5 is an enlarged perspective view of the battery holding unit.

FIG. 6 is an enlarged perspective view of a portion of the main plate for hooking a hook portion.

FIG. 7 is an explanatory diagram for explaining the hooking of the hook portion to the base plate.

8 (A) is a perspective view of the latched state, FIG. 8 (B) is a view of it in the direction of the arrow, and FIG. FIG.

FIG. 9 is a partially enlarged view showing a state where the periphery of the battery is held by the battery holding portion of the circuit reinforcing plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ground plate 12 Circuit reinforcing plate 13 Hook part 14 Battery holding part 17 Battery

Claims (1)

(57) [Claims] 1. A battery wristwatch comprising a plurality of hook portions detachably hooked to a base plate and a plurality of battery holding portions detachably holding a battery by elastic force, provided on an outer periphery of a circuit reinforcing plate.