JPS5929829B2 - solar battery clock - Google Patents

Description

[Detailed description of the invention] The present invention relates to the arrangement of a solar cell watch.

In conventional solar-powered watches, the solar cell element is placed on the dial side, and electrical charging elements such as backflow prevention diodes and current-limiting resistors are built into the movement side, or are placed on the dial side. The electric element for the charging circuit is placed on the back side, etc., and the solar cell element or the electric element for the charging circuit is electrically connected to the battery and clock drive circuit built into the movement by a foot or lead wire. A structure was in place. To explain in more detail, in the former case, the electric elements for the charging circuit are not mounted on the dial side, so the dial side can be made thinner, but the electric elements built into the movement The element has a disadvantage that its arrangement is limited by the distance from the dial side or the wiring position of the lead wire.

In the latter case, the electrical elements for the charging circuit are mounted on the dial side, so the dial side becomes thick, and the battery and watch drive circuit built into the movement are mounted on the dial side. However, there was a drawback that the arrangement was limited due to the wiring position of the lead wires.

Moreover, in both cases, the wiring to the battery needed to be electrically connected via another lead member. In addition, there were other effects such as design constraints imposed on the dial due to the limited conditions of the arrangement of watch parts.

Furthermore, both of these methods have the disadvantage that the lead wires connecting the dial and movement may break when a shock is applied to the watch or when the dial and movement are attached or detached. To prevent lead wire breakage (breakage due to tension applied to the lead wire during attachment/detachment), remove the soldered part of the lead wire before disassembly, or remove the lead wire before reassembling. This method has the disadvantage that it requires a lot of soldering work. SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to provide a solar cell watch that has excellent impact resistance and is convenient for maintenance and repair.

In order to achieve the above object, the present invention includes a mounting part of a solar cell element, a battery receiving part on which a battery is mounted, and a leaf part connecting the mounting part of the solar cell element and the battery receiving part. It is formed from a single flexible substrate, the solar cell element mounting part is placed on the dial side, the lead part crosses the movement in cross section, and the battery receiving part is placed on the movement on the opposite side from the dial. It is something to be placed.

5 Examples of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view of a main part of a solar cell watch showing a first embodiment of the present invention, and FIG. 2 is a plan view of a flexible substrate used in the solar cell watch shown in FIG. In FIG. 1 and FIG. 2, a solar cell element 1, a diode 2,
The electric element of the resistor 3 is soldered to a flexible substrate 4 to constitute a charging circuit, and the flexible substrate 4 is bonded to a metal substrate 5.

The plastic frame 6 is bonded to the copper foil portion 4a on the surface of the flexible board 4, and the metal board 5 is soldered with a pad (not shown) and fixed to the base plate 7 with screws like a conventional dial board. Ru. The electric element mounting portion 4b of the flexible substrate 4 includes a lead portion 4c of the flexible substrate 4, which is coated with an insulating coating (not shown) in a notch 7a provided on the outer periphery of the base plate 7.
The terminals 9a and 9b are screwed to the opposite side of the dial via the movement 8. At this time, evening iode 2
is located at a lower position in cross section than the battery 10, and the total thickness of the dial is equal to the solar cell element 1 constituting the dial, the battery element,
It is determined by the thickness of the flexible substrate 4, the metal substrate 5, and the plastic frame 6, and not only can the dial be made thinner, but also the diode 2 and the resistor 3 can be arranged without increasing the total thickness of the watch. Further, FIG. 3 is a sectional view of a main part of a solar cell watch showing a second embodiment of the present invention,
FIG. 4 is a plan view of the flexible substrate shown in FIG. 3. In FIGS. 3 and 4, the electric element mounting part 4b is further provided with an insulating coated lead part 4d and a battery receiving part 4e, and the other parts are shown in FIGS. 1 and 2. It has a similar configuration. As mentioned above, the solar cell element mounting part and the battery receiving part are integrally formed on one flexible board via the lead part, and the flexible board is fixed to the side opposite to the dial of the moufmetjit in the middle of the lead part. By providing a terminal section, when performing maintenance or repair, you can simply remove the set screws and ETO locking screws of the terminal section, without having to perform attachment/detachment work that involves soldering the lead wires as in the past. The dial and movement can be easily attached and detached by simply folding back the dial, and the lead part itself is flexible and can be given some sway to allow the movement to be traversed cross-sectionally. Since the lead portion can be folded back, the lead portion will not break during disassembly and reassembly or when subjected to impact. Furthermore, the fact that the flexible substrate is integrally equipped with the battery holder or the battery pusher is highly effective in terms of cost, such as reducing the number of movement components and reducing the number of assembly steps.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of a solar cell watch showing a first embodiment of the present invention, FIG. 2 is a plan view of the flexible substrate shown in FIG. 1, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a sectional view of the main parts of the solar cell watch, and FIG. 4 is a plan view of the flexible substrate shown in FIG. 3. 1...Solar cell element, 4...Flexible substrate, 4a...Solar cell element mounting part (copper foil part), 4b...Electric element tower Mounting section, 4c, 4d・
...Lead part, 4e...Battery receiving part, 8.
...Movement, 9a, 9b...Terminal.

Claims (1)

[Claims] 1 A flexible substrate including a lead part integrally formed between a solar cell element mounting part and a battery receiving part, a part of the lead part crosses the movement in cross section, and the solar cell tower mounting part and a battery receiving part are arranged with the movement in between, and the lead part is provided with a terminal part in between for fixing the flexible substrate to the movement.