| 摘要 |
PROBLEM TO BE SOLVED: To provide a sub-frame structure for a front suspension with fitted strength of an suspension arm improved in case of frontal collision. SOLUTION: The sub-frame structure comprises a front cross member 1 arranged at the front part of the vehicle body, a rear cross member 3 arranged at the rear side of the front cross member 1, and a pair of right and left sub- frame bodies 5, 5 connecting the cross members 1, 3 with each other. In the sub-frame body 5, a hollow part 35 is formed with an upper panel 31 and a lower panel 33. A rear arm bracket 11 is fitted to the rear part side and the outer side, in the vehicle width direction, of the lower panel 33 forming the sub-frame body 5. The part from the fitted surface of the lower panel 33 to the rear side, of the upper panel 31 and the lower panel 33, is formed in a generally spherical shell shape.
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