Patent ID: 8083263

Claim:
A tank-carrying vehicle rear body structure, comprising: a pair of rear side members extending in a longitudinal direction of a body of the vehicle and disposed on opposing sides from each other in a lateral direction of the body; a rear tank frame supporting a rear tank at a position below the rear side members and coupled to the rear side members at least at two attachment points spaced apart in the longitudinal direction of the vehicle body, the rear tank frame including a frame member having a closed polygonal cross-section; and a member-folding-facilitating part located forward of the rear tank frame and configured and arranged to facilitate folding of the pair of rear side members upon application of a force to the rear body structure and the rear tank frame by deflecting a portion of the force in an upward direction of the body using a rigidity of the rear tank frame, wherein the member-folding-facilitating part is a torsion beam forming a torsion beam rear suspension, the torsion beam located forward of the rear tank.