| 摘要 |
PROBLEM TO BE SOLVED: To provide a cross member structure of a vehicle, which can achieve weight saving while securing sufficient torsional stiffness and which can avoid incorrect assembly to a side rail.SOLUTION: A cross member comprises: rectangular closed section frames 2A which are arranged at a required interval in a vehicle width direction in such a manner that rectangular closed sections face each other and which are attached to a side rail 1; and upper, lower, front and rear connection materials 2Ba, 2Bb, 2Bc and 2Bd which are arranged in such a manner as to be laid between central parts of upper, lower, front and rear frame parts 2Aa, 2Ab, 2Ac and 2Ad of the rectangular closed section frames 2A, respectively. |
