| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a simple and highly rigid suspension device mounting part for a vehicle body. SOLUTION: In this suspension device mounting part structure for a vehicle body, a closed cross section part extending in the width direction f the vehicle body is formed by a plurality of press-molded plate materials (a front dash board and a dash board lower cross member 7), an extrusion-molded beam member (a reinforcing beam 17) is extended inside the closed cross section part, a cast-molded suspension arm bracket 6 is welded to an outer face of the closed cross section part, parts (projections 15a and 15b) of the suspension arm bracket 6 are inserted inside the closed cross section part, and the beam member is welded to the inserted portion. Thereby, high rigidity is obtained without complicating shapes of each member constituting the closed cross section part. Also, rupture strength in regard to repeated stress of the suspension device mounting part is enhanced further by combining a press-molded member with high toughness and a cast-molded member with high rigidity.
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