| 摘要 |
PROBLEM TO BE SOLVED: To provide car body front part structure capable of effectively avoiding load concentration in an axial direction of a longitudinal direction skeleton member at the time of frontal collision. SOLUTION: A front part of a car body wherein a curved part 2A is provided on a front end part of the longitudinal direction skeleton member 2 and a wedge type open space S is formed between a back surface 3a of a car widthwise direction skeleton member 3 and a wall surface of the curved part 2A opposed to the back surface 3a, is constituted so as to gradually proceed bending deformation of the curved part 2A at the time of the frontal collision and disperse a load by increasing a contact area of the curved part 2A with the back surface 3a to avoid the load concentration in the axial direction of the longitudinal direction skeleton member 2. At this time, the curved part 2A comprises inner and outer members 110, 120 arranged close to each other, on which deformation mode changing means 100 having different deformation modes are provided. Thereby, while generation of local stress concentration can be prevented and the deformation of the curved part 2A can be stabilized, reaction force is increased by generating resistance force by strong contact of the inner member 110 with the outer member 120, and energy absorbing efficiency of an input load can be improved. COPYRIGHT: (C)2005,JPO&NCIPI
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