Honda Motor Co., Ltd.

Chikashi Nagashima

Jun Horiguchi

A vehicle rear body structure includes rear floor panels, rear wheel housings, and rear side extensions. The rear side extensions each have a first joined portion that is joined to a breadthways outer end of each of the rear floor panels, a second joined portion that is joined to an rear end of each of the rear wheel housings, a side portion that is an uprising slanted portion extending from the rear end of the first joined portion to the second joined portion, a surface portion surrounded by the first joined portion, the second joined portion, and the side portion, and an extending portion joined to a flange portion of a rear pillar, wherein the side portion is configured to have higher stiffness or strength than at least the surface portion.

Vehicle rear body structure

With an excessive impact load generated by a side impact or collision, even in the event that a falling deformation of a pillar connected to a side sill occurs at an initial stage of the side impact, triggering a twisting deformation of the side sill as the side sill is pulled along with the falling deformation of the pillar, the side sill is allowed to maintain a high rigidity against the impact load at a middle stage of the side impact due to a projecting surface of a secondary reinforcement panel being made to be oriented upwards by virtue of the twisting deformation of the side sill.

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Wako, Japan

Chikashi Nagashima