VEHICLE REAR BODY STRUCTURE

To provide a vehicle rear body structure capable of securing support rigidity of a rear suspension and also effectively transmitting a rear-end collision load from a rear side housing to a coupled body of a side sill and a pillar.SOLUTION: Upper frames 41 and 42 and a lower frame 43, which connect the rear end of a coupled body 30 comprising a side sill 3 and a rear pillar 35 with a rear side housing 10, are separately arranged from each other in a vehicle vertical direction. In the lower frame 43, an inclined angle of being inclined to be located inside the vehicle toward the vehicle rear side is set to be larger than those of the upper frames 41 and 42. In the rear side housing 10, a lower joint part 29, to which the rear end of the lower frame 43 is joined, is located more inside than an upper joint part 27 and an upper joint part 28 in a vehicle width direction, and at least a lower frame rear end joint part 29, and a first upper frame rear end joint part 27 and a second upper frame rear end joint part 28 are formed of a single member between them in the rear side housing 10.SELECTED DRAWING: Figure 5 【課題】リヤサスペンションの支持剛性を確保できるとともに後突荷重をリヤサイドハウジングからサイドシルとピラーとの結合体に効果的に伝達すること。【解決手段】サイドシル３およびリヤピラー３５から成る結合体３０の後端とリヤサイドハウジング１０とを連結する、上側フレーム４１，４２と下側フレーム４３とが車両上下方向に互いに離間して配設され、下側フレーム４３は、車両後方に向かって車両内側へ位置するように傾斜する傾斜角が、上側フレーム４１，４２よりも大きく設定され、リヤサイドハウジング１０において、下側フレーム４３の後端が接合される下側接合部２９は、上側接合部２７および上側接合部２８よりも車幅方向内側に位置し、リヤサイドハウジング１０における少なくとも、下側フレーム後端接合部２９と第１上側フレーム後端接合部２７および第２上側フレーム後端接合部２８と、これらの間に亘って単一の部材により形成された。【選択図】図５