REAR PART VEHICLE BODY STRUCTURE OF VEHICLE

To provide a rear part vehicle body structure of a vehicle 1 which enables improvement of support rigidity of rear suspension dampers 2 coupled to a rear part vehicle body at desired positions.SOLUTION: A rear part vehicle body structure of a vehicle 1 includes: a pair of left and right side sills 110; a floor tunnel 120; and a pair of left and right rear side frames 190. Each rear side frame 190 includes a damper support member 240 which supports an upper end of a rear suspension damper 2 in a desired position located at the vehicle rear side of and above a rear part of the side sill 110. The floor tunnel 120 includes tunnel frames 121 extending in a vehicle fore and aft direction and forming an upper part of the floor tunnel 120. The rear part vehicle body structure of the vehicle includes a second cross member 230 which couples the left and right damper support members 240 to each other in a vehicle width direction; and a pair of left and right fourth reinforcement frames 320 which couples areas near both ends of the second cross member 230 to rear parts of the tunnel frames 121 in a substantially linear manner.SELECTED DRAWING: Figure 2 【課題】所望位置で後部車体に連結されたリヤサスダンパ２の支持剛性を向上できる車両１の後部車体構造を提供することを目的とする。【解決手段】左右一対のサイドシル１１０と、フロアトンネル１２０と、左右一対のリヤサイドフレーム１９０とを備えた車両１の後部車体構造であって、リヤサイドフレーム１９０が、サイドシル１１０の後部よりも車両後方上方の所望位置において、リヤサスダンパ２の上端を支持するダンパ支持部材２４０を備え、フロアトンネル１２０が、車両前後方向に延びるとともに、フロアトンネル１２０の上部を構成するトンネルフレーム１２１を備え、左右のダンパ支持部材２４０を車幅方向に連結する第２クロスメンバ２３０と、第２クロスメンバ２３０の両端近傍、及びトンネルフレーム１２１の後部を略直線的に連結する左右一対の第４補強フレーム３２０とを備えたことを特徴とする。【選択図】図２