COUPLING STRUCTURE OF VEHICLE FRAME

摘要

The present invention relates to a coupling structure of a vehicle frame which can reduce the weight of the vehicle frame, can reduce the occurrence of defects and deformation in a manufacturing process using welding, and can enable a simple and quick manufacturing process to be carried out so as to increase productivity by rivet-coupling both ends of a cross member (20) and a sub-frame (30) that form the vehicle frame, directly or by the medium of a bracket (50). The coupling structure of a vehicle frame which is coupled by a fastener (40) inserted into the cross member (20) made from an aluminum material and of which both ends are connected with a side rail (10) located at both ends of the vehicle frame, and the sub-frame (30) made from an aluminum material and is formed to intersect the cross member by coming into close contact thereto, so as to simultaneously pass through the cross member and the sub-frame, and doubly presses both ends of the cross member (20) and the sub-frame (30).