| 摘要 |
PROBLEM TO BE SOLVED: To suppress folding deformation in the vehicle width direction of extension side members in a collision. SOLUTION: Since a unit frame 5 is coupled along side walls 3c inside in each vehicle width direction of right and left extension side members 3 across the side walls 3c and 3c, the unit frame 5 functions as a reinforcement member inside the extension side members 3, and holding deformation in the vehicle width direction in the collision can be suppressed. COPYRIGHT: (C)2003,JPO
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