JPS58103014A - Electronic apparatus - Google Patents

Abstract

PURPOSE:To prevent the waste of an incorporated battery before transfer of an apparatus to the user, by inserting freely attachably and detachably a nonconductive thin plate between a projected terminal of a rubber plate facing a power clear switch of an electronic calculator and a contact terminal of a printed circuit substrate and incorporating the battery when the electronic calculator is forwarded from a plant. CONSTITUTION:Plural input operation switches 4 are arranged on the operation panel of an electronic calculator, and a display part 5 is provided in the rear of them, and each parts of the display part 5 are connected to a printed circuit substrate 11 by a conductive connector 9. A pair of connection terminals 11-1 and 11-2 are formed on the substrate 11, and these terminals 11-1 and 11-2 are connected with a conductive rubber plate 12 by bridging to perform key inputs. A power clear key switch 4' is included in switches 4, and a thin plate 15 consisting of a nonconductive material is inserted freely attachably and detachably to a recessed part 12-3 between a projected terminal 12-2 of the switch 4' and the terminal 11-2. Thus, the waste of an incorporated battery before transfer to the user is prevented, and the battery is incorporated when the electronic calculator is forwarded from a plant, and the operation and tools for battery insertion are made unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to electronic devices such as electronic desktop calculators (hereinafter referred to as calculators), and more specifically, to prevent shortening of the life of a battery used as a power source.

Conventionally, electronic devices produced in factories, such as calculators, have been shipped with batteries inserted into the calculator itself.

However, with this method, even if the switch is set to the OFF position, it may turn on due to some accident, or even if it does not turn on, the battery will be consumed due to self-discharge over a long period of time when the switch is in the hands of the user. By the time he picked up the calculator and tried to use it, the battery's lifespan was significantly reduced.

Therefore, in order to prevent the above-mentioned phenomenon when shipping, the battery is not inserted into the calculator itself, but placed next to it and delivered to the user, who then inserts it into the calculator for the first time and uses it. I am taking a method.

However, this method does not reduce the battery life at all, but
This not only requires unnecessary effort on the part of the user, but also requires a small screwdriver or similar tool to open and close the battery cover or lower cover, resulting in an increase in cost.

The present invention solves the above-mentioned difficulties.

The details of the present invention will be described below with reference to drawings of embodiments.

FIG. 1 explains the appearance of a calculator embodying the present invention. In the figure, the calculator, which is designated as a whole by reference numeral 1, has an upper case 2 and a lower case 3. A predetermined number of input operation key switches 4 are arranged on the front side of the upper surface of the upper case 2, and behind these, a predetermined number of key switches 4 are arranged. A display section 5 is provided. There is a second display inside the display section 5.
As shown in the figure, a polarizing plate 6, a spacer 7, a liquid crystal display 8, and a display damper 10 are stacked and housed in order from the top, and the display unit 5 made up of these parts is electrically connected to a printed wiring board 11 by a conductive connector 9. It is connected to the. 1
2 is a pair of contact terminals 11-1 on the printed wiring board 11;
゜A conductive rubber plate for bridging connection of 1l-2 (Fig. 3) and key operation, and contact terminal 11-1.11 as shown in the figure.
A recess 12-1 is formed corresponding to -2, and a protruding terminal 12 for bridging connection of the contact terminal 11-1 at the center of the recess.
-2.

In this embodiment, a switch is used in which a pair of contact terminals are bridge-connected with another terminal, but a switch in which a pair of contact terminals are brought into direct contact and short-circuited may also be used. 13 is an LSI.

A key top 4-1 is elastically supported on the rubber plate 12, and its upper portion partially protrudes from the upper case 2. The printed wiring board 11 is fixed to the upper case 2 with mounting screws 14.

4' is a power supply/clear key switch for turning the power ON1 or clearing the contents of the memory display among the key switches 4, and turns the power ON1 or clearing by bridging a pair of contact terminals 11-2 of the printed wiring board 11. Let's do it. 15 is a thin plate made of a non-conductive material (for example, Mylar sheet, etc.), which is attached to the upper case 2 as shown in FIGS. 1 and 3.
It is detachably inserted between a contact terminal 11-2 inside the calculator and a corresponding protruding terminal 12-2 through a notch 2-1 provided in the calculator. In order to insert this thin plate 15, rubber plate 1
As shown in FIG. 3, a recess 12-3 is formed in a part of the surface of No. 2 in contact with the printed wiring board 11. As shown in FIG.

When the calculator according to the embodiment configured as described above is shipped from the factory, it has a built-in battery, a power supply, a clear key switch 4', a protruding terminal on the rubber plate 12, and a contact point on the printed wiring board 11. A non-conductive thin plate 15 is inserted between the terminals 11-2. This prevents the built-in battery from depleting before the calculator is delivered to the user, and when the user uses the calculator, the power can be turned on by simply pulling out the thin plate 15 that partially protrudes from the side wall of the calculator case, and inserting the battery. No operation or tools required.

As described above, according to the present invention, it is not necessary to attach a driver tool such as a screwdriver, so it is possible to reduce costs, and the user does not have to worry about inserting a battery, etc., so the usability is improved.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and Fig. 1 is an external perspective view of the calculator, Fig. 2 is a cross section taken along the line I-Section I in Fig. 1, and Fig. 3 is an enlarged exploded view of the thin plate insertion part. It is to. 2... Upper case, 3... Lower case, 4'... Power supply, clear key switch, 11...-Printed wiring board, 11-1.11-2... Contact terminal, 12... Rubber plate, 12-2... protruding terminal, 15... thin plate.

Claims (1)

[Claims] An electronic device characterized in that a thin plate made of a non-conductive material is detachably interposed between the contact terminals of a power switch.