Two-circuit push-button switch |
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| 申请号 | JP4777988 | 申请日 | 1988-02-29 | 公开(公告)号 | JPH01221828A | 公开(公告)日 | 1989-09-05 |
| 申请人 | Matsushita Electric Ind Co Ltd; | 发明人 | FUJIYAMA TERUKI; | ||||
| 摘要 | PURPOSE: To achieve a push-button switch capable of turning on and off two circuits by disposing a first contact on a substrate at the position corresponding to an electrically conductive diaphragm and a second contact on a lower surface of an insulating sheet at the position corresponding to said diaphragm and connecting a third contact to said diaphragm. CONSTITUTION: A first contact 11 is disposed on the upper surface of a lower insulating sheet 2 at the position corresponding to the center of an electrically conductive diaphragm 10 provided in an intermediate insulating sheet 3. A second contact 12 is disposed on a lower surface of an upper insulating sheet 6 at the position corresponding to the convex portion 10a of the diaphragm 10, and a third contact 13 connected to the diaphragm 10 is disposed on the upper surface of the intermediate insulating sheet 3 at the region corresponding to the peripheral region 10b of the diaphragm 10. Switching circuits are formed between the first contact 11 and the diaphragm 10, and between the second contact 12 and the diaphragm 10, respectively. Two switching circuits can thus be turned on successively by one push-button by setting the actuating pressure force for one switching circuit to be weaker than the reversing force of the diaphragm 10 to open or close the other switching circuit. COPYRIGHT: (C)1989,JPO&Japio |
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| 说明书全文 | |||||||
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