| 摘要 |
PROBLEM TO BE SOLVED: To provide a body front part structure capable of increasing an impact energy absorption efficiency by surely collapsably deforming the front end portion of a side member even against an impact load input from a diagonal forward direction as well as a frontal direction. SOLUTION: A side member forward area 11F positioned forward of a reinforcement portion 11R is formed aslant to a lateral outside toward the forward direction of a body, and the side member forward area 11F is set by a strength control means 50 to such a strength that the maximum stresses occurring at the front and rear parts of a virtual cross section longitudinally arranged continuously with each other are nearly equal to or larger in the front part than in the rear part. Accordingly, a collapsable deformation is induced from the front end of the side member forward area 11F as the input point of the impact load toward the rear against any impact in the frontal direction or diagonal forward direction. This collapsable deformation can be continuously propagated to the rear and, when the side member forward area 11F interferes with the rear face of a bumper reinforce 12 in the latter half portion of the collapsable deformation, an increase in reaction is suppressed by a reaction control means 60, and an efficient energy absorption can be performed. COPYRIGHT: (C)2003,JPO
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