JPH0250435B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a solar battery-equipped portable watch in which a transparent substrate having a thin film solar battery as a charging power source is held by an elastic member.

[Conventional technology]

Conventional portable watches with solar cells have a number of crystalline silicon solar cells embedded in the synthetic resin parting plate of digital watches or the synthetic resin scale ring of analog watches and connected by wire bonding to provide a charging power source. It was something to be gained.

Recently, thin film solar cells that are cheaper than conventional crystalline silicon and can be shaped into solar cells have been attracting attention.
Like 201878, it had a structure in which a thin film solar cell was formed on the bottom surface of the watch cover glass.

[Problem that the invention seeks to solve]

However, with the above-mentioned conventional technology, if the cover glass is damaged or broken, the thin film solar cell formed on the bottom surface of the cover glass must also be replaced.
The financial burden of after-sales service is extremely large.
It was also difficult to manage. In addition, since the cover glass with solar cells is directly exposed to the outside, when using inorganic glass materials, it is necessary to strengthen the glass or take a waterproof structure to prevent water from entering. The need arises. Here, in order to strengthen the glass, it is necessary to perform the glass strengthening treatment on a single item and then form a thin film solar cell, and because it is a single item process, it is necessary to use special and expensive jigs and tools to form the solar cell. This results in extremely high costs. In addition, if a waterproof structure is created using a cover glass with solar cells attached, the expensive solar cells will have to be discarded due to the quality of waterproofing.
This has the problem of high cost.

Therefore, the present invention is intended to solve these problems.The purpose of the present invention is to reduce the financial burden on customers in terms of after-sales service, reduce manufacturing costs, and improve the impact resistance of transparent substrates. To prevent cracking and chipping, to widen design variations by combining a thin film solar cell on a transparent substrate with the color tone and finish of a dial plate, and to easily assemble a transparent substrate.

[Means for solving problems]

The solar battery-equipped portable watch of the present invention has a protruding portion 7a.
A protrusion 5a is formed on the inner wall of the end portion in the direction in which the protrusion 5a is abutted against the lower surface of the protrusion portion 7a, and the end portion opposite to the protrusion portion 5a is formed. A fixed frame 5 having an L-shaped protrusion 5b formed on an inner wall thereof, a transparent substrate 2 whose upper surface outer periphery is in contact with the lower surface of the protrusion 5a and a thin film solar cell 1 formed on the lower surface, and the L-shaped protrusion 5a. 5
A dial plate 4 is formed with a concave portion 4a that engages with the transparent substrate 2, and is arranged so as to form a gap with the transparent substrate 2.
A movement 6 on which the dial plate 4 is placed and fixed, and a movement 6 that is installed between the thin film solar cell 1 and the movement to press and hold the transparent substrate 2 and to enable electrical continuity between the two. It has a conductive member 3. It is characterized by

[Effect]

According to the above configuration of the present invention, when an impact is applied to the transparent substrate, since the transparent substrate is supported by the coil spring, which is a conductive member, the coil spring acts as an impact member and absorbs the impact. Furthermore, even when the dial is deformed or warped, a gap is maintained between the transparent substrate and the dial by the coil spring, so that the dial does not hit the transparent substrate and cause cracks. Furthermore, when attaching or removing the needle, by compressing the coil spring, the transparent substrate is lowered until it touches the dial, and even if force is applied to the transparent substrate, the transparent substrate will not be deformed or broken.

〔Example〕

FIG. 1 is a cross-sectional view of essential parts in an embodiment of the present invention, in which 7 is a body having a protrusion 7a formed protruding from its side wall, 8 is a cover glass, and 9 is a case back. A transparent substrate 2 on which a thin film solar cell 1 is formed is placed between a needle 10 and a dial plate 4,
In order to fix the transparent substrate 2 between the outer periphery of the transparent substrate 2 and the body 7, a fixing frame 5 having a protrusion 5a formed on the inner wall thereof, with which the outer periphery of the upper surface of the transparent substrate 2 comes into contact, is interposed. Due to the spring force of the frame 11, the fixed frame 5 is pushed up via the movement 6 and dial plate 4, and is brought into contact with the body 7, thereby fixing and positioning the transparent substrate 2. Furthermore, transparent substrate 2
is pushed up using an elastic member such as two or more coil springs 3, and is brought into contact with the lower surface of the protrusion 5a of the fixing frame 5, thereby securing a gap between the dial plate 4 and the transparent substrate 2 to prevent interference with each other. ing. Therefore, even if an impact is applied to the transparent substrate 2, the transparent substrate 2 is supported by the coil spring 3, so the coil spring acts as a buffer member and absorbs the impact. In addition, since the coil spring 3 maintains a gap between the transparent substrate 2 and the dial 4 against deformation or warping of the dial 4, the dial does not hit the transparent substrate 2 and cause cracks. do not have. Furthermore, when attaching and removing the needle, the jig is pressed against the top of the transparent substrate 2, but if there is a gap between the transparent substrate 2 and the dial 4, the jig is pressed against the transparent substrate. However, according to this structure, the transparent substrate 2 may break when
Since the transparent substrate 2 is pushed up by the coil spring 3, the coil spring 3 compresses when pushed from above.
Since the transparent substrate 2 is lowered until it touches the dial 4, there is no gap, and even if force is applied to the transparent substrate 2, the dial 4 guides it, so the transparent substrate 2 will not break. Here, by using an elastic member such as resin for the fixed frame 5, it serves as a buffer member for the transparent substrate 2, so that it has a further effect on impact resistance.

FIG. 2 is another sectional view of FIG. 1, in which an L-shaped projection 5b having an L-shaped projection is formed at the lower part of the fixed frame 5, and a planar projection 5b is formed at a position corresponding to the L-shaped projection 5b on the dial plate 4. By forming a concave recess 4a in the holder, engaging the L-shaped protrusion of the fixed frame 5, fixing the fixed frame and the dial plate, and sandwiching the transparent substrate 2, the transparent substrate 2 and the dial plate 4 are fixed. Since the fixed frame 5 is integrated and the movement is assembled, the three parts can be assembled in a set state, so assembly is easy and problems such as cracking of the transparent substrate during assembly are almost eliminated. In particular, since the coil spring 3 constantly applies a force pushing up the transparent substrate 2, if the transparent substrate 2 is assembled alone, the coil spring 3 will lift it above a predetermined position, making it extremely difficult to assemble the fixed frame 5 and the body 7. However, if the three parts are integrated as described above, the three parts can be easily fixed by inserting and fixing the dial foot into the main plate hole in the movement.

There is an amorphous silicon solar cell as one type of thin film solar cell, and in FIG.
A thin film solar cell 1 is formed on the lower surface of the transparent substrate 2, and in addition to the solar cells, electrodes for taking out the cells from each cell and a protective film for protecting the solar cells are formed on the lower surface of the transparent substrate 2. Here, solar cell 1 and movement 6
The internal capacitor or secondary battery is electrically connected using the coil spring 3 as a conductive member. The coil spring 3 is connected to the transparent substrate 2 of the transparent substrate 2.
In addition to coil springs, conductive rubber,
Zebra, plate springs, etc. can be used. Furthermore, the transparent substrate 2 may be made of organic glass or the like in addition to inorganic glass.

In addition, in terms of after-sales service, only the solar cell can be easily replaced, and the cover glass can be replaced without touching the solar cell. There is less financial burden.
Moreover, since the transparent substrate on which the solar cells are formed does not need to be strengthened, a large number of solar cells are simultaneously formed on a large plate of glass, and then cut into individual transparent substrates in post-processing, making it possible to manufacture large quantities. It is possible to significantly reduce the manufacturing cost of solar cells.

Furthermore, the combination of various colors and finishes of the thin film solar cell part and the dial part expands design variations, and the outer periphery of the thin film solar cell part can also be covered by the body, resulting in a clear partition.

〔Effect of the invention〕

As described above, according to the present invention, a fixed frame is disposed inside the protrusion formed on the body, and a transparent transparent film having a thin film solar cell formed on the lower surface of the protrusion formed on the inner wall of the fixed frame. The dial plate is arranged such that the substrate is brought into contact with the transparent substrate, and the L-shaped protrusion of the fixed frame and the recessed portion of the dial plate are engaged with each other so that a gap is formed between the substrate and the transparent substrate. Since the dial is configured to be pressed and held by an elastic member installed between the dial and the movement on which it is placed,
The transparent substrate can be moved up and down by the elastic member. For example, even if an impact force is applied to a solar cell watch, the impact force is weakened by the elastic member, preventing the transparent substrate from cracking or chipping due to the impact. This method has excellent effects such as preventing cracking of the transparent substrate when attaching and removing the needle.

[Brief explanation of drawings]

FIG. 1 is a main cross-sectional view showing an embodiment of the solar battery-equipped portable watch of the present invention, and FIG. 2 is a cross-sectional view taken in a different direction from FIG. 1. DESCRIPTION OF SYMBOLS 1...Solar cell, 2...Transparent substrate, 3...Elastic member (coil spring), 4...Dial plate, 4a...Recess, 5...Fixed frame, 5a...Protrusion, 6...Movement, 7... ...Body, 7a... Protrusion, 8... Cover glass, 9... Back cover, 10... Needle, 11...
Middle frame.

Claims (1)

[Claims] 1. A body 7 on which a protrusion 7a is formed, a protrusion 5a is formed on an inner wall of an end that abuts the lower surface of the protrusion 7a, and is in the direction of contact with the protrusion 7a. a fixed frame 5 having an L-shaped protrusion 5b formed on the inner wall of the end in the opposite direction; a transparent substrate 2 whose upper surface outer periphery is in contact with the lower surface of the protrusion 5a, and a thin film solar cell 1 is formed on the lower surface; a dial plate 4 formed with a recess 4a that engages with the L-shaped protrusion 5b and arranged so as to form a gap with the transparent substrate 2; a movement 6 on which the dial plate 4 is placed and fixed; A solar cell-equipped mobile watch characterized by having a conductive member 3 installed between the thin film solar cell 1 and the movement to press and hold the transparent substrate 2 and to enable electrical continuity between the two. .