| 摘要 |
PROBLEM TO BE SOLVED: To ensure a stable shock detection performance by forming a groove extending in the longitudinal direction at a front face of a reinforcement member, an mounting a collision detection sensor in the groove. SOLUTION: A groove 2 is formed in the longitudinal direction at a front face of a reinforcement member 1. In the groove 2 a collision detection sensor 3 is mounted so that its front face may be substantially flush with that of the member 1. The sensor 3 has a pair of opposed electrodes 5, 5 at its inner surface. The member 1 is formed by extruding an aluminium alloy. At a rear face 6a of a shock absorbing material 6, a pair of upper and lower grooves 7, 7 are formed to construct a push-in part with respect to the sensor 3. Ahead of the material 6 a bumper facia 9 is arranged. When the material 6 is pressed and crushed by the collision with a substance, the sensor 3 is put on.
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