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Swithch

A switch and circuit board technology, applied in the direction of electrical switches, electrical components, circuits, etc., can solve the problems of not easy to peel off, impossible, contact failure, etc., to achieve the effect of easy maintenance and avoid poor conduction

Inactive Publication Date: 2003-05-14
MITSUMI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the example of the above-mentioned prior art, an adhesive is used to bond the liner to the membrane switch on the circuit board. Peel off the film that binds the key springs and gaskets above from the circuit board
Thus, also making the above repairs impossible
[0007] In addition, when the gasket is placed on the circuit board, although the above-mentioned repair is possible, since it is not sealed with an adhesive, foreign matter such as garbage, liquid, or the like is often infiltrated into the above-mentioned switch part, causing contact failure and causing damage. Poor conduction

Method used

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Embodiment Construction

[0019] Below, according to Figure 1 to Figure 3 An embodiment of the present invention will be described in detail. In addition, for the convenience of description, all structural parts that are the same as those in the prior art are described with the same reference numerals. figure 1 and figure 2 Denotes a membrane switch 11. This membrane switch 11 is used for keyboards of mobile phones and personal computers, etc., and it is composed of the following parts: a circuit board 2 formed of a flexible film, and a fixed contact 3 arranged at the center of the circuit board 2 And the fixed contact 4 of the surrounding part, the switch part S composed of the hemispherical metal key spring 5 arranged on the fixed contact 3, 4; the gasket 6 arranged on the circuit board 2; An insulating coating 7 is bonded on the key spring 5 and the spacer 6 to position the key spring 5 and the spacer 6 .

[0020] Moreover, the above-mentioned gasket 6 is arranged on the above-mentioned switc...

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PUM

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Abstract

The present invention relates to a switch, the purpose of the present invention is to enhance air tightness of a switch section by applying a spacer upon a circuit board and to enable maintenance work of the switch section by easily detaching from the circuit board a cover film bonding a click spring and the spacer. The present invention provides a switch formed of a fixed contact 3 arranged on the upper surface of a circuit board 2; a movable contact member composed of a hemisphere metal click spring 5 connected and disconnected with the fixed contact 3 and of a spacer 6 by bonding an insulating cover film 7 on the upper surface of the click spring 5 and arranged on the circuit board 2. Its feature is: a layer of weak adhesive 12 detachable from the printed circuit board 2 is formed beneath the spacer 6 allowing the spacer 6 to be placed freely detachable on the circuit board 2.

Description

technical field [0001] The present invention relates to a switch, and more particularly to a switch including a key spring arranged on a fixed contact provided on a circuit board and covering the upper part of the circuit board with an insulating film. Background technique [0002] The following is based on Figure 4 Such a conventional switch will be described. 1 is a membrane switch among the figure. The membrane switch 1 consists of a circuit board 2, a fixed contact 3 at the center of the circuit board 2 and a fixed contact 4 at the side, and a hemispherical metal key spring arranged on the fixed contacts 3 and 4. 5, the spacer 6 disposed on the circuit board 2, and the insulating coating 7 adhered to the key spring 5 and the spacer 6 with an adhesive M. [0003] When the membrane switch 1 is used in electronic equipment such as mobile phones and keyboards, the above-mentioned switch part S is connected to the upper surface of the circuit board to arrange a plurality o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/48H01H13/70H01H13/702
CPCH01H13/7006H01H2229/028H01H2229/062
Inventor 照山秀二平畠浩今井信贵
Owner MITSUMI ELECTRIC CO LTD
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