Collision impact detector for use in automotive vehicle |
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| 申请号 | EP04011203.9 | 申请日 | 2004-05-11 | 公开(公告)号 | EP1489638A3 | 公开(公告)日 | 2005-08-10 |
| 申请人 | DENSO CORPORATION; | 发明人 | Imoto, Masahiko; | ||||
| 摘要 | A collision impact detector (1) detects deceleration of a vehicle caused by its collision with another vehicle or an obstacle. A rotor (4) is rotatably supported on a shaft (3) and biased by a coil spring (5) in a direction opposite to a rotational direction in which the rotor is rotated by the deceleration. One axial end of the coil spring (5) is supported by a first support (6) integrally formed with the rotor (4), and the other axial end of the coil spring is supported by a second support (7) formed separately from the rotor. In this manner, a friction torque generated between the coil spring (5) and the second support (7) is eliminated, thereby considerably reducing a total friction torque associated with rotation of the rotor. The second support (7) may be formed either integrally with or separately from a housing (2) supporting the shaft (3). | ||||||
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