Accelerometer |
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| 申请号 | JP5483989 | 申请日 | 1989-03-07 | 公开(公告)号 | JPH0293371A | 公开(公告)日 | 1990-04-04 |
| 申请人 | Automot Syst Lab Inc; | 发明人 | REONAADO UEENAA BEERU; | ||||
| 摘要 | PURPOSE: To eliminate the need for a high precision working member and to allow easier operation inspection by controlling a switch by moving a detection ball which is attracted by a fixed magnetism permeable member while, in response to an acceleration larger than the attracting force, subjecting to a magnetic attenuation force. CONSTITUTION: A detection bell 70 is attracted by a fixed magnetism permeable washer 30 to a housing 12 of a cylinder part. The bell 70 is displaced, in response to an acceleration larger than the attracting force, being subject to magnetic attenuation force through electric coils 80 and 82 of conductive rings 32 and 34, and through the first terminal 62, a switch 96 is closed so that an acceleration above a threshold value is detected. With such configuration as using magnetism instead of gas for attenuation, no gasket is required, in addition, high precision work for a detection bell's outer diameter, housing's inner diameter, etc., is not required, and an operation inspection is easily performed accompanied by no such inconvenience as operation inspection cannot be performed without a sealed-in gas, etc. COPYRIGHT: (C)1990,JPO |
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