JPH03242596A - Electronic watch - Google Patents

Abstract

PURPOSE: To reduce the size and the price by supplying power with a photoelectric cell having high power retainability. CONSTITUTION: A driver 13 has a chargeable battery 28, and a connecting blade 14 is provided in it. The blade 14 is bent downwards, and projects to the outside of the metal housing of the driver 13 owing to it. The driver 13 is fitted into a sealing ring 15 made of synthetic material, and the outside diameter of the driver 13 is equal to the diameter of a dial 10, and is equal to the inside diameter of a round groove brim 1. The upper surface of a metal board 16 in the sealing ring 15 is covered with an insulating film 18 having a hole provided in a region 19 being opposed to the blade 14 of the driver 13. The sealing ring 15 has a specific number of recessed parts 20 below the upper surface, and to each of them a photoelectric cell 21 is fitted. Besides, on the dial 10 similarly, photoelectric cells 21 are provided in a visible way in recessed parts 22 arranged individually at opposing positions to the recessed parts 20.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an electronic timepiece.

[Conventional technology]

The electronic timepiece according to the present invention has an analog display, and is electrically connected to a case 1 equipped with a glass 2 and a dial 10, an electronic driver 19, and other power supply terminals. The metal blade I4 includes a metal bottom surface electrically connected to one of the supply terminal parts of the electronic circuit, and furthermore, the electronic driving body is made of an insulating synthetic material. It is an electronic timepiece with an analogue display, which is held in the case by means of an encapsulation ring 15 and which further comprises an accumulator for powering its electronic drive and a photovoltaic cell for charging the accumulator.

However, highly automated products such as electronic drive units for electronic watches with crystal oscillators and stepping micromotors can use any structure of electronic drive unit available on the market today. This allows us to produce these watches at highly competitive prices.

Such a drive body has a bottom part that forms an electrical connection between one electrode of the battery and the electronic circuitry of the drive body, and another electrical connection formed by a resilient metal housing of the drive body. It includes a battery container with metal blades.

It has already been proposed to replace the battery with a rechargeable accumulator, and it has also been proposed that the charging be carried out by means of a photovoltaic cell in the case or in the body.

However, since the battery container allows only small-sized batteries, ie, low-capacity batteries, to be applied, it merely provides a driving body with a small power capacity.

It is thus clear that the power storage is inadequate if the watch is to be usable for a considerable length of time in a dark environment or in a place with very little light.

[Problem to be solved by the invention]

In order to solve this problem, it is possible to construct a new drive body with a large battery container to make it possible to install a storage battery with a high capacity. It is also possible to integrally form the diode, filter capacitor, etc. of the storage battery charging circuit.

However, such a solution results in high costs and thus deviates from the problem of miniaturization.

[Means for Solving the Problems] An object of the present invention is to receive power from a photovoltaic cell having a high power retention capacity, and to be able to produce it at a low cost while being small in size. By using a driving body that can be used as a clock, a special number electronic clock is provided.

In the electronic timepiece according to the present invention, the case is made of metal or includes a metal container, and a storage battery is installed below the driving body within the enclosure ring.

Further, the upper surface of the storage battery facing the driver is insulated from the driver by means such as an insulating film.

However, only the metal blade of the driver penetrates through the insulating film.

and further a photovoltaic cell and a component of an electronic circuit connecting the photovoltaic cell to the storage battery are mounted on the encapsulation ring;
Also, a notch is provided on the dial facing the photovoltaic cell.

The containment ring is thus used at the same time as a container for the accumulator, and its diameter can be at least the same as the largest dimension of the drive body.

The capacity of the storage battery can be taken into account.

Commercially available drives can be used without any modification, in particular the already existing connecting blade can be easily bent a considerable amount and connected to the battery through the insulating hole. It protrudes toward the outside of the drive body for this purpose.

In order to manufacture the watch more easily, the accumulator is preferably arranged between two thin metal plates, on which the terminals of the diode and one of the capacitors in the charging circuit of the accumulator are arranged. The terminals are soldered.

Such assembly members are held resiliently under moderate pressure by the bottom of the case, removable or otherwise.

If it is preferred to use a case made of synthetic material, the drive body with metal dial, tJ person ring and M battery may be packaged in one metal container. be.

In this case, the metal container is itself installed in a case made of synthetic material.

Although the invention is particularly suitable for producing wristwatches, it can also be used for wall clocks and large clocks.

〔Example〕

Hereinafter, specific examples of the electronic timepiece according to the present invention will be explained with reference to the drawings.

The timepiece shown in FIG. 1 is composed of a metal round groove edge 1, a glass 2 fixed to a glass notch in the round groove edge 1, and a metal bottom plate 3 fixed in a notch to the round groove edge l. It is something that

The round groove edge 1 is provided with 2Mi corner portions 4 and 5 and 6 and 7, each of which is a pair of two corner portions for fixing the strip.

In the lower part of the glass notch, the round groove edge 1 has a support surface 8, while the other inner surface of the round groove edge l presents a simple hollow cylindrical inner surface 9.

Immediately below the glass 2 is a metal letter 1to, which is held by the support surface 8.
In addition, the dial 1o is arranged so as to provide sufficient space for the hands 11 and 12 driven by the electronic driver 13 provided opposite to the lower surface of the dial 1o.

The driver 13 can be any commercially available driver, for example, a 63/4X8 configuration driver.

Such a drive body has a rechargeable battery and a connecting plate 14 is provided therein.

Here, this blade 14 is bent downwards so that it projects outside the metal housing of the driver.

Such a driver is an encapsulation ring made of synthetic material.

15, and the outer diameter of the drive body is the outer dial 10.
In other words, it is equal to the internal diameter of the round groove edge 1.

A metal plate 16 is present in the enclosure ring 15 at a level corresponding to the thickness of the driving body 13, and an elastic plate 16 is present in the downward direction within the enclosure ring. The blade is a cut out.

The upper surface of the metal plate 16 is covered with an insulating film 18 having a hole provided in a region 19 facing the blade 14 of the driver.

The containment ring 15 has a certain number of recesses 20 in the lower part of its upper surface, each of which is fitted with a photovoltaic cell 21.

In addition, the dial 10 is also provided with a method that allows the photovoltaic cells to visually see the number of recesses 22 that are individually arranged at positions facing the recesses 20 and having the same number as the recesses 2o. It is set in.

As can be seen from Figure 1, six photovoltaic cells 21 are placed on the dial 1.
It is placed between the 0 time display marks.

The periphery of the encapsulation ring 15 is provided with a gap, as shown at 23.24, for accommodating the capacitor and diode 25 of the accumulator charging circuit, and for the passage of the conductive wires 26 connecting the photovoltaic cells to each other and to the capacitor. , grooves, etc. are provided.

One of the spots 27 soldered to one of the photovoltaic cells 21 in the conductive wiring 26 is shown.

It can be seen that the soldering spot 27 is covered by the support surface 8.

The inner part of the enclosure ring 15 located below the metal plate 16 forms a receptacle for an accumulator 28 in the form of a circuit chip.

A second metal plate 29 similar to the metal Fi 16 is arranged in the lower part of the accumulator, but its diameter is equal to the outer diameter of the sealing ring 15.

The metal plate 29 is likewise provided with a cut elastic blade 30 which is maintained against the underside of the accumulator 28 .

The terminals of the diode 25 are individually soldered to the metal plate 16 at 31 and individually soldered to the metal plate 29 at 32.

The dial 101, the enclosure ring 15 with the cantering body and the accumulator, and the metal plate 29 are connected by means of the bottom plate 3 to the support surface 8 with a round grooved edge.
is held elastically against the

The elastic connection is constituted by elastic blades 14, 17 and 30, and by the bottom plate 3, the rounded edge 1 and the dial 10.

In fact, before assembly, the watch consists of only four parts:

namely, the round groove edge 1 with its glass, the driver 13 with the dial 10 and the hands, the ring 15 with the accumulator 28 placed between the plates 16 and 29, and the bottom plate 3.

Assembly can be carried out simply by first inserting the second and third parts into the round groove edge either sequentially or simultaneously and then fixing the base plate 3.

If the conductivity of the round groove edge 1 is insufficient, it can be corrected by providing a conductive cylindrical collar or sleeve that ensures the connection between the dial and the bottom plate. I can do it.

The components of the watch may be fitted into a cup-shaped case, as the case may be, so that the bottom plate cannot be separated.

Instead of being attached to the periphery of the containment ring 15, the diode and capacitor may be inserted into recesses provided on the top or bottom surface of the ring.

The photovoltaic cells may also form the time markings on the dial.

[Brief explanation of drawings]

FIG. 1 is a plan view of the wristwatch. FIG. 2 is a partially enlarged view in the axial direction. ...Round groove edge...Glass...Metal bottom plate~7...Corner section...Support section...Inside cylinder Surface 0...Dial ■, 12...Hand 3...Driver 4...Blade 5...1, 1 person ring 6 .29...Metal contact plate 7.30...Elastic blade, cut out bullet 8...Insulating film 0.22...Recessed part, cut Part 21...
...Photovoltaic cell 23.24...Gap, groove 25...Diode 28...Storage battery

Claims (1)

[Claims] 1. A case 1 equipped with a glass 2 and a dial 10, an electronic driver 19, and a metal blade 14 electrically connected to other power supply terminals, except for an electronic It comprises a metal bottom surface electrically connected to one of the supply terminals of the circuit, and furthermore the electronic driver is inserted into the case by means of an encapsulation ring 15 made of an insulating synthetic material. An electronic watch with an analog display, which is held in a case, and further consists of a storage battery that supplies power to the electronic drive unit and a photovoltaic cell that charges the storage battery, the case being made of metal. Alternatively, it includes a metal container and is equipped with an accumulator 28 at the bottom of the driver within the enclosure ring, and furthermore, the upper surface of the accumulator facing the driver is covered with an insulating film 18 or the like. a photovoltaic cell 21 and a component 25 of the electronic circuit connecting the photovoltaic cell to the accumulator, which is insulated from the drive body by means and penetrated through the insulating film only by the metal blade 14 of the drive body; The enclosure ring 15
The electronic timepiece is mounted on the top of the electronic watch, and further includes a notch 22 provided on the dial facing the photovoltaic cell. 2. The entire metal housing of the driver is of the same polarity, different from the polarity of the blade 14, and furthermore, the electrical connection between the bottom part and the underside of the opposite accumulator 28 is by means of the metal bottom part 3. 2. The electronic timepiece according to claim 1, wherein the electronic timepiece is formed by a metal dial 10 held between the driving body and the round groove edge of the case or container. 3. The electronic circuit between the photovoltaic cell and the accumulator is composed of diodes, and the accumulator 28 has two metal contact plates 16, one of which is fixed by an enclosure ring 15;
3. The electronic timepiece according to claim 2, wherein the electronic timepiece is held between the contact plates 29 and the terminals of the diodes are individually soldered to these contact plates. 4. The metal plates 16, 29 are elastic connecting blades 17, 3
4. The electronic timepiece according to claim 3, wherein the electronic timepiece has a value of 0.