| 摘要 |
PROBLEM TO BE SOLVED: To improve bonding stiffness and bonding strength of a welding part without increasing weight. SOLUTION: Left and a right side wall parts 16A, 16B of a suspension member attaching bracket 16 are line-welded (a welding part P1) by laser welding on ridgelines 30, 32 formed by edge parts 10F, 10G of a rear side member 10 and extending in a vehicle longitudinal direction. Upper end edge parts 16C, 16D of the left and right side wall parts 16A, 16B of the suspension member attaching bracket 16 are line-welded (a welding part P2) by laser welding on parts adjacent to the edge parts 10F, 10G of the side wall parts 16A, 16B of the rear side member 10.
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