| 摘要 |
PROBLEM TO BE SOLVED: To improve load transmission performance and shape maintaining performance by solving a problem that rigidity is high in a whole of a frame. SOLUTION: In the vehicle body frame structure, a front sub-frame 42 is formed to be a parallel-cross shaped or rectangular frame by an aluminum alloy, and is constituted by right and left front joint parts 64 and right and left rear joint parts 71 arranged on parallel-cross shaped or rectangular corners, and right and left vertical members 61 and front and rear lateral members 62 and 67 for connecting the joint parts 64 and 71. The right and left front joint parts 64 and the right and left rear joint parts 71 are formed by an aluminum alloy die-cast product, and the right and left vertical members 61 are formed by an aluminum alloy elongation material. COPYRIGHT: (C)2006,JPO&NCIPI
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