Acceleration responsive switch and manufacture thereof |
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| 申请号 | JP3173789 | 申请日 | 1989-02-12 | 公开(公告)号 | JPH02213017A | 公开(公告)日 | 1990-08-24 |
| 申请人 | Susumu Ubukata; | 发明人 | UBUKATA SUSUMU; MIZUTANI YASUKAZU; SHIBATA MOICHI; | ||||
| 摘要 | PURPOSE: To maintain stability and high reliability for years for a switch by providing a portion where an amalgam is surely formed with quicksilver, on the point of an electrode inside the metallic container, inner surface of which is made rough. CONSTITUTION: A conductive liquid 3 such as quicksilver that is inertial and works as an electric contact point is sealed air-tight in a hard metallic container 2A, whose inner atmosphere is so formed as not to contaminate quicksilver such as inert gas. On the point of an electrode 2F provided a portion where an amalgam with the quicksilver is surely formed, while the inner surface of the metallic container 2A is made rough so as not to generate the state of short-circuit even when an insulating distance between the amalgam portion of the electrode 2F and the container 2A is shorter than that between the amalgam portion of each electrode. Malfunction does not occur for the oscillatory acceleration, especially the vertical one that is received by a switch during normal running. For the acceleration, primarily the horizontal big one that is generated during collision, the contact is closed in a short period of time, and through the time necessary for the actuation of an air bag, etc., the contact is surely held in a closed state. COPYRIGHT: (C)1990,JPO&Japio |
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| 说明书全文 | |||||||
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