| 摘要 |
PROBLEM TO BE SOLVED: To interpose a shock energy absorbent made of a foamed resin material between a bumper cover and a bumper reinforcement for the purpose of restraining a shock force (load) at the early stage of collision of a vehicle and a passenger low, and reducing the leg disability of the passenger, while a material with high rigidity and high foaming density is required to absorb much more shock energy, resulting in the increase of the remainder of the uncrushed foamed material and the rapid reduction of energy absorbing ability, which is not preferable because the width of the shock energy absorbent is made large and the bumper is enlarged. SOLUTION: A bumper reinforcement (2) and a shock energy absorbent (3) are composed of hollow protrusion molding materials of aluminum alloy materials. The shock energy absorbing material (3) is formed into a pentagonal or parallelogram shape with a hollow cross section, and has a flat load receiving face part (6) on its front face. When the shock energy absorbent receives a shock, it is deformed like a pantograph, so that the remainder of the uncrushed material is less, and the shock energy absorbing ability is high. COPYRIGHT: (C)2003,JPO
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