JPS6032621Y2 - Connection structure of electronic watch - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a connection structure for an electronic wristwatch.

The number of wristwatches powered by a small built-in battery is increasing, along with quartz watches that use a crystal oscillator as the time reference, but the battery life is about 1 to 2 years, and battery replacement is required for these types of watches. This was a drawback in watches.

In order to eliminate the above-mentioned drawbacks, so-called solar-powered watches, which are watches equipped with solar cells that convert light energy into electrical energy and charge the batteries, making it unnecessary to replace the batteries, have emerged.

However, in solar battery wristwatches, electrical components such as solar cells, backflow prevention diodes, overcharging prevention resistors, etc. must be added in addition to normal watch components, and it is not possible to incorporate the aforementioned electrical components into the watch movement. had the disadvantage of a complicated structure.

On the other hand, electronic wristwatches are constructed in such a way that the electrical components such as solar cells, backflow prevention diodes, and overcharge prevention resistors are separated from the normal watch movement and attached to the windshield side.
Although the structure may be simple, electrical connection and assembly between the timepiece movement and the electrical components pose problems.

The present invention provides a structure in which a solar cell circuit board with at least electrical components such as solar cells attached is installed on the windshield side and is separated from the watch movement, and the electrical connection between the two can be easily made without increasing the number of parts. The present invention provides a connection structure for an electronic wristwatch having a unique structure.

The present invention will be explained below based on the drawings.

Figure 1 is a plan view of the solar battery wristwatch according to the present invention.
2 is a watch case, and 2 is two button buttons 2a and 2b provided on the watch case 1 for display switching, display correction,
It has functions such as lighting a lamp (not shown).

Reference numeral 3 denotes a windshield glass fixed to the watch case 1, and a coating layer 3a indicated by diagonal lines constitutes the end of the display section 4 and the window of the solar cell 5, which will be described later.

The display section 4 is equipped with a display element such as a liquid crystal display, and digitally displays 25 Sundays and 5 days a week.

FIG. 2 is a cross-sectional view from A to A in FIG. 1.

la. 1b is the body and back lid that constitute the watch case 1; 6;
A support member made of metal supports the display section 4, a watch circuit board 7 is provided with electronic components such as an IC chip and a capacitor (not shown), and a tube 8 is fixed by a seat 9.

The tubes 8 are connected to the 1,000, r, and 1,000 poles of a battery (not shown) wired on the watch circuit board 7, respectively.

The support member 6 is fixed to the tube 8 with screws 10, and is configured such that the voltage from the timepiece circuit board 7 is led to the support member 6.

Reference numeral 11 denotes a solar cell circuit board made of glass-filled epoxy resin or the like, with a solar cell 5 attached to the windshield 3 side, and a backflow prevention diode 12 on the opposite side as shown in FIG. 3B.
It constitutes a solar cell unit having terminals 11e and llf that contact the overcharge prevention resistor 13 and the spring portion 6a of the support member 6 (see FIG. 4).

The solar cell circuit board 11, which is separated and fixed above the watch movement, is fixed to the step part 1c of the watch case 1 and the body part 1a by the windshield 3 via a patch 14.

Figure 3 shows the solar cell unit, Figure A is a top view, and Figure B
The figure is a bottom view, and figure 0 is a side view.

The solar cell circuit board 11 has a window 11a that escapes the display section 4.
Eight solar cells 5 are connected in series by a wiring pattern 11b indicated by diagonal lines, and a backflow prevention diode 12 and an overcharge prevention resistor 13 are soldered to the lower surface through a through hole llc. and is connected to.

Note that the terminals 11e and llf are for electrical connection with the timepiece movement.

Figure 4 shows the timepiece movement, with Figure A being a plan view and Figure B being a side view.

The two support members 6 each have a spring portion 6a bent upward, and the terminals 11e, l of the solar cell circuit board 11
contact with lf.

This establishes an electrical connection between the timepiece movement and the electrical components of the solar cell unit via the timepiece circuit board 7 and tube 8.

As explained above, in the electronic wristwatch of the present invention, the electrical connection between the solar cell circuit board, which is provided on the windshield side and has at least an electrical component such as a solar cell attached thereto, and the clock circuit of the clock movement is made possible by supporting the display part. Since a metal support member is also used for this purpose, it is possible to obtain a connection structure for an electronic wristwatch that is simple and easy to assemble without increasing the number of parts.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3 shows a solar cell unit, Fig. A is a top view, Fig. B is a bottom view, and Fig. 0 is a top view. The side view and Figure 4 show the timepiece movement, Figure A is a plan view, and Figure B is a side view. 1...Watch case, 3...Windshield glass, 4...Display section, 5...Solar cell, 6
...Support member, 6a...Spring part, 11
...Solar cell circuit board, 11e, llf...
...Terminal, 12...Reverse current prevention diode,
13... Resistor for overcharging prevention.

Claims (1)

[Scope of utility model registration request] A clock movement equipped with a clock circuit; a solar cell circuit board located on the windshield side above the clock movement and equipped with at least electrical components such as solar cells;
A display section for displaying time that is included in the timepiece movement; a metal support member that supports the display section on the timepiece movement and is electrically connected to the timepiece circuit; and the support member. and a spring portion bent upward on which the solar cell circuit board is placed, the watch circuit and the solar cell circuit board being electrically connected via the spring portion. The connection structure of an electronic wristwatch is characterized by the following.