| 摘要 |
PURPOSE: A rear frame of a body is provided to improve impact performance by increasing structural rigidity of a vehicle frame, to lighten a rear frame by applying an aluminium material, and to improve assemblability. CONSTITUTION: A rear frame(10) of a body comprises a front rear side member(11), a back rear side member(13), a front cross member(15), a back cross member(17), and a center cross member(19). The front rear side member is made of aluminum die-casting material. A back end part is formed with an assembly space part to assemble the end of the back cross member. The back rear side member is made of an aluminium extrusion material and is inserted into the back end of the front rear side member. The back cross member is made of an aluminium extrusion material and is inserted into the assembly space part.
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