| 摘要 |
An inexpensive, lightweight, safe bumper beam (10) has an optimum strength characteristic and is capable of effectively coping with all kinds of collisions including slight collisions and strong collisions. The bumper beam (10) is disposed on a front or rear end part of a vehicle. Joining parts of the bumper beam (10) are attached to stays (2a, 2b) attached to, for example, front end parts of longitudinal frames (1a, 1b) of a body of a vehicle so that the bumper beam (10) extends laterally. The bumper beam (10) includes a bumper beam body (3) extended laterally and having a closed section and a reinforcing beam (4) extended in and along the bumper beam body (3). The reinforcing beam (4) includes a lateral upper wall (4a), a lateral lower wall (4b) and a front wall (4c) formed integrally with the upper and the lower walls (4a, 4b) to receive a longitudinal shock exerted on the vehicle. Parts of the upper wall (4a) and the lower wall (4b) around joining parts attached to the end parts of the frames (1a, 1b) are inclined to the front wall (4c) to form inclined parts (5).
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