| 摘要 |
In order to provide a collision detecting device which can enable the accurate and early determination of a collision with a vehicle or the like and to provide a passive safety system using this collision detecting device, a low-rigid portion (52) and a crash box (53) are arranged ahead of a high-rigid portion (50) in a front portion of a frame (30). The front end of a rod (44) is fixed to a bumper (54). The rod (44) is inserted into a magnetic detector (64) disposed on the high-rigid portion (50). In the rod (44), a number of magnets are aligned in the longitudinal direction of the rod (44) such that their N poles and S poles are alternatively arranged. As a vehicle collides, the crash box (53) is first deformed so that the rod (44) moves backward, whereby a collision can be detected before large acceleration is generated. <IMAGE> |
