JPS636741A - Battery mounting mechanism - Google Patents

Abstract

PURPOSE:To make it possible to selectively use a solar cell and a dry battery in the same construction without use of additional parts by installing a pair of springs whose one side pieces are capable of being elastically deformed toward an upper case and the other side pieces toward a lower case. CONSTITUTION:A pair of springs 11, 12 whose one side pieces 11a, 12a are capable of being elastically deformed toward an upper case and other side pieces toward a lower case are mounted in a printed circuit board 8 arranged between the upper case on which a solar cell 6 is mounted and the lower case in which a dry battery 15 is accommodated in an appliance such as a desk electronic calculator. When the solar cell is used as power source, the appliance is assembled so that one side pieces 11a 12a come in contact with the lower surface of the solar cell 6. When a dry battery 15 is used, it is assembled so that the other side pieces 11b, 12b come in contact with the upper surface of the battery 15. Therefore, the dry battery 15 and the solar cell 6 can selectively be used in the same construction, and cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a battery mounting mechanism, and more particularly to a battery mounting mechanism for electronic equipment powered by solar cells or dry batteries.

[Prior art] In recent years, the power consumption of electronic components such as LSIs and liquid crystal displays has been reduced, and electronic devices such as electronic desk calculators (hereinafter referred to as calculators) and electronic wristwatches have traditionally been used as power sources. In addition to dry batteries such as button-type batteries such as alkaline manganese batteries, silver oxide batteries, and lithium batteries, many products using solar cells have come onto the market.

However, not all of these electronic devices have been replaced by solar cell systems, and while solar cells have the advantage of low running costs, they require light with a certain level of illuminance when using solar cells. There are also problems that need to be resolved, such as the difficulty of maintaining memory over a long period of time and costs, and currently products using dry batteries and products using solar cells coexist.

Therefore, for example, in the field of calculators, there are two types of calculators in demand from the market: products with similar calculation specifications and powered by solar cells (hereinafter referred to as "solar") and products powered by dry batteries.

[Problems to be solved by the invention] However, in the past, when a solar version and a battery version were released with similar rA calculation specifications, the upper casing of the exterior (hereinafter referred to as

upper case) and lower housing (hereinafter referred to as lower case)
If you tried to use the same thing in common with the solar battery, you would either have to put the battery compartment in a different place, or you would have to use only the lower case in common and the upper case made from a different mold. Prepare battery contacts for each dry battery,
The mold mold for the upper case and the press mold for the printed circuit board must be made separately, which increases costs and
There were also problems with parts management.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention has a battery contact plate that can be deformed with one piece toward the upper casing side and the other piece toward the lower casing side. A structure with at least one pair of spring parts was adopted.

[Sakukawa] By adopting the structure previously described, it is possible to selectively use solar power and dry batteries with the same structure without using any extra parts.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 and the following illustrate one embodiment of the present invention. In the figures, reference numeral 1 indicates an upper case made of plastic mold;
2 is a decorative board fixed to the surface of the upper case with a sheet-like adhesive 3; 4 is a lower case made of plastic mold like the upper case; 5 is a display; 6 is a built-in battery, which is a solar panel; and through holes 2a, l of upper case l
The light-receiving surface is exposed to the outside through a.

Reference numeral 7 designates a keyboard section, in which key tops 7a protruding from the upper case protrude from the surface of the decorative board through holes 2b in the decorative board, allowing input of various data.

Reference numeral 8 denotes a printed circuit board on which electronic components such as an LSI 9 are mounted by soldering or the like, and signal lines (not shown) for key patterns 8a and the like are patterned.

Reference numeral 10 indicates a display device, which is electrically connected to a predetermined pattern on the printed circuit board through a conductive connector 10a or the like.

11.12 is pudding) 2 & the predetermined pattern 8b on the board,
The battery contact plate soldered to 8c is made by pressing a thin plate such as a stainless steel plate or a phosphorus copper plate, and then applying nickel or plating treatment to the battery contact plate 1.
1. There are two spring parts 11a, one on the + side and one on the one side, and each has at least one pair of spring parts 11a.

11b, 12a, 12b, and the spring portion is one
1a and 12a are bent toward the upper case side, and the other 11b and 12b are bent toward the lower case side.

Further, the position of each battery contact plate and the shape of the spring portion are predetermined so that each spring portion contacts each electrode of the solar or button type battery while maintaining a predetermined contact pressure, as will be described later.

As shown in Fig. 1, the lower case 4 has two button-type battery compartments 4a and 4b integrally formed in the lower case. Battery cover 1 made by pressing a metal plate that also serves as a contact point
3 to hold the battery so that it does not come off, and then cover the battery mounting part with a plastic molded battery cover from the side of the lower case.Next, we will first explain the assembly procedure of a solar-powered scientific calculator. Then, first, the solar 6 is stored in the solar storage section of the upper case 1 to which the decorative board 2 is adhesively fixed in advance.

At this time, if a protrusion 1b for holding the solar is provided on the upper case as necessary, the stand can be used to receive the force when the solar is pressurized from the outside.

Next, the display unit 10 and the conductive rubber connector 11 are stored in a predetermined place in the upper case l. Next, the printed circuit board 8, to which two battery contact plates 11 and 12 are fixed in advance, is attached to the upper case l by screws, etc. Fix it from the bottom with.

At this time, the tips 11a, 1 of one spring part of each battery contact plate
2a contacts the left and right polar portions 6a and 6b of the solar with a predetermined contact pressure, and power is supplied from the solar to the LSI on the printed circuit board.

Next, the lower case 4 is fixed to the upper case 11 with screws or the like, or at this time, the other spring part 11 of the battery contact plate 11.
b, 12b are inserted into the button-shaped battery storage portions 4a, 4b through through holes 4c, 4d provided therein.

Next, attach the battery cover 14 to the lower case 4 from the outside.
14 and the lower case 4 are fixed to each other by fitting into the claw portions 14a, 14b and the locking portions 4e, 4f.

Next, we will explain the procedure for assembling a functional model using the same exterior but powered by a button-type battery.

Except for storing the solar, the fixing of the lower case 4 to the upper case L is the same as the solar version.

However, the decorative board used does not have a hole in the area corresponding to the solar hole 1a in the north case.

Next, the button type batteries 15 and 16 are inserted into the battery storage section from the bottom of the lower case, matching their polarities, and then the battery cover 14 is fixed to the lower case 4.

As an example of a method of fixing to the lower case 4, as shown in FIG. Of course, other methods are also possible.

When the battery cover 13 is attached, the battery contact plate 11.
The spring parts 11b and 12b inserted into the 12 battery storage parts 4a and 4b are connected to each electrode part 15 of the battery 15.16.
a, 16a with a predetermined contact pressure, and the LSI is removed from the battery.
Power is supplied to. Subsequently, the battery cover 14 is fixed to the lower case 4, and one assembly is completed.

Here, to explain another usage of the battery contact plate 11.12, as shown in FIG.
Among the spring parts 2, a protruding piece lb is attached to the upper case so that the tip of the spring part 12a that comes into contact with one side electrode of the solar is exposed from the surface of the upper case 1 and comes into contact with the decorative board 2 when the solar is not stored. If the adhesive 3a on the decorative board 2 side corresponding to the notch 1c between . It can also be used as an earth spring, further reducing the number of parts.

In this case, the amount of deformation of the spring part is smaller than when it comes into contact with the solar electrode by the thickness of the solar and upper case, so the contact pressure between them is also reduced, and the decorative board 2 is caused by the contact pressure of the spring part. There is no need to worry about it peeling off.

Another way to use the button-type battery compartments 4a, 4b is to make the upper surfaces of the button-type battery compartments 4a, 4b approximately the same height as the lower surface of the solar panel, as shown in FIG. If this is done, the battery storage parts 4a and 4b will serve as a support for the solar when external force is applied to the solar, so that the spring part will not be subjected to excessive deflection.

In this embodiment, one battery contact plate is provided with a pair of spring parts, but the number of spring parts may be increased or decreased as necessary, and the shape can also be changed to achieve the purpose of the present invention. If it is, other shapes may be used.

Furthermore, although the explanation has been given using a button type battery as an example of a dry battery, the battery mounting mechanism of the present invention can also be applied to batteries of other shapes, such as AA batteries.

Furthermore, although the present invention has been described by taking up a 38 number calculator as an embodiment of the present invention, it is of course applicable to other electronic devices such as electronic game machines and electronic watches.

[Effects] As is clear from the above explanation, according to the present invention, solar batteries can be mounted on the same upper and lower cases by only partially changing the type of the decorative panel on the surface. Since the battery contacts are configured so that they can be used in common, the cost of these molds can be saved, and the press mold for printed circuit boards can also be used in common, which is effective in reducing costs.

Furthermore, when a dry cell battery is used as a power source, there is no need to separately provide an earth spring for the decorative board and the printed circuit board, making it possible to reduce the number of parts and the number of assembly steps by nine.

Furthermore, since the solar cell is supported in the dry cell storage part, it is also possible to improve the reliability of the contact between the battery contact plate and the solar cell.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and FIG. 1 is an exploded perspective view of the main parts, fSZ diagram is an exploded perspective view of the main parts, FIG. 3 is an overall perspective view, and FIG. 4 is an exploded perspective view of the main parts. Sectional view taken along line A-A in Figure 5.
The figure is a sectional view taken along the line BB in FIG. 3 in the case of mounting dry batteries. 1... Upper case 2... Decorative board 4... Lower case 6... Solar 8... Printed circuit board 11.12... Battery contact plate 13... Battery cover 15.16... Dry battery t#
t(hand'X%flA&l<H・76%3[2]4B-B
＃＊＃／riaFig.5

Claims (1)

[Scope of Claims] 1) A battery mounting mechanism comprising an upper housing capable of housing a solar cell, a lower housing capable of housing a dry battery, and a battery contact plate elastically abutting the electrodes of each battery, wherein the battery contact A battery mounting mechanism characterized in that a plate is provided with at least one pair of spring parts that can be elastically deformed, one piece being elastically deformable toward the upper housing side and the other piece being elastically deformable toward the lower housing side. 2) The upper casing is provided with a notch for exposing the spring part of the pair of spring parts that comes into contact with the electrode of the solar cell to the outside from the upper casing. The battery mounting mechanism according to item 1. 3) The battery mounting mechanism according to claim 1 or 2, wherein the solar cell is supported by a dry cell storage section provided in the upper housing.