Acceleration sensor |
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| 申请号 | JP40579990 | 申请日 | 1990-12-25 | 公开(公告)号 | JPH04221770A | 公开(公告)日 | 1992-08-12 |
| 申请人 | Takata Kk; | 发明人 | SHIMOZONO SHIGERU; YOSHIMURA KAZUO; SATO TATSU; | ||||
| 摘要 | PURPOSE: To prevent the occurrence of chattering phenomenon of an electrode by a method wherein the thickness of the portion, in the vicinity of an electrode, of a cylinder body made of a conduction material in which a magnetizing inertia body is located. CONSTITUTION: A thick section part 13 is formed to the end part on the side, where electrodes 40 and 42 are arranged, of a cylinder body 12 made of a conduction material. When a high external force generated during collision of a vehicle is exerted in the direction of an arrow mark A, an inertial body 14 is moved forward to the tip of the cylinder body 12 and brought into contact with electrodes 40 and 42. In which case, a case of 18 made of a conduction material of the inertia body 14 short-circuits the electrodes 40 and 42 and a current flows between the electrodes 40 and 42. In this case, it is detected that an acceleration change higher than a scheduled threshold is produced and collision of a vehicle is detected. In which case, the inertial body 14 is moved to the tip of the cylinder body 12, an induction current higher than that at other part flows to the thick section part 13 of the cylinder body 12. Thereby, a high brake force is exerted on the inertial body 14, the inertial body 14 is collided with the electrodes 40 and 42 at a low speed, and chattering phenomenon between the electrodes 40 and 42 is prevented from occurring. COPYRIGHT: (C)1992,JPO&Japio |
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