Rear vehicle-body structure of vehicle

Abstract

The purpose of the present invention is to provide a rear vehicle body structure of a vehicle, the rear vehicle body structure being capable of reliably improving vehicle body rigidity at the rear ofthe vehicle by forming annular structural parts at the front and rear of a damper support part of a rear suspension. The rear vehicle body structure of the vehicle is provided with a shock absorber supporting part of a rear suspension and includes a first annular structure part (Z1) which is annular in the vehicle width direction and a second annular structure part (Z2) which is annular in the vehicle width direction. The first annular structure part (Z1) is arranged in front of the shock absorber supporting part, so that a vehicle body lower wall part (H), left and right side wall parts (I) and an upper wall part (J) are continuous. The second annular structure part (Z2) is arranged behind the shock absorber supporting part, so that the vehicle body lower wall part (K), the left and rightside wall parts (L) and the upper wall part (M) are continuous. The first and second annular structural parts are each formed by a closed cross-sectional part formed by a reinforcing member or by a thick plate part having a plate thickness greater than that of a vehicle body plate.

Description

technical field [0001] The present invention relates to a rear body structure of a vehicle in which a ring-shaped structural portion in the vehicle width direction is formed at the rear of the vehicle body by a closed cross section or a thick plate portion thicker than the body plate. Background technique [0002] Conventionally, Patent Document 1 discloses a rear vehicle body structure of a vehicle exemplified below. [0003] That is to say, this technical solution is: the shock absorber support part of the rear suspension is provided on the upper part of the rear wheel house; The rear pillar reinforcement and the outer rear pillar reinforcement form a closed section of the left and right side walls extending in the vertical direction, and the roof and the roof reinforcement form a closed section of the upper wall extending in the vehicle width direction. In the rear part of the vehicle body, a ring-shaped structural part that connects the above closed cross-sectional part...

AI Technical Summary

Problems solved by technology

[0004] In the conventional technical solution disclosed in this patent document 1, an annular structural portion in the vehicle width direction is formed at the rear portion of the vehicle body, but the inner rear pillar reinforcement is separated from the shock absorber support portion of the rear suspension to the front side in the vehicle longitudinal direction. Therefore, the rigidity of the rear of the vehicle body cannot be improved efficiently, and there is still room for improvement in the rigidity of the rear of the vehicle body

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