Tank-carrying vehicle rear body structure

摘要

A gas tank is protected by absorbing collision energy with the entirety of a rear portion of a vehicle without using a reinforcement member. This reduces weight and cost. Rear-side tank frame supports the tank at a position below rear side member. The front portion of rear-side tank frame is secured on rear side member, while the rear portion is directly or indirectly secured on rear side member. A torsion beam is arranged ahead of rear-side tank frame with respect to the vehicle body. When an input load is exerted at a rear end portion of the rear side member and a rear end portion of rear-side tank frame toward the front of the vehicle, rear side member is folded to a V-shape, upward with respect to the vehicle body. Rear-side tank frame collides with torsion beam, and the front portion of rear-side tank frame is pushed upward along with rear side member with respect to the vehicle body.