| 摘要 |
PROBLEM TO BE SOLVED: To provide a bumper beam structure for minimizing maximum load generated at the moment of collision. SOLUTION: The bumper beam for an automobile is composed in a "θ-shaped" cross section of a top wall, a bottom wall opposed to the top wall, a pair of lateral walls connecting the top and bottom walls at opposite ends, and a connection rib provided intermediate between the top and bottom walls and connecting the lateral walls. The top wall is thicker than the bottom wall, both corners at opposite ends of the top wall are curved with a radius of curvature of 0.1-0.3 of the length of the top wall, and both corners at opposite ends of the bottom wall are curved with a radius of curvature of 0.5-2.0 of the thickness of the bottom wall. The bumper beam is formed of an extrusion hollow member made of aluminum alloy. COPYRIGHT: (C)2004,JPO
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