To sufficiently absorb impact energy upon rear collision by a rear frame structure that does not increase a weight of a vehicle body.SOLUTION: Each of a rear frames 13 provided on both sides behind a vehicle body has a hollow cross section, extends in a front and rear direction, and has: a horizontal top face 13c in which an upper face of the extending top face is horizontal; and a convex bottom face 13d that protrudes downward in a convex shape. The convex bottom face 13d is configured by that: a horizontal upper stage horizontal portion 13e; via a ramp portion, a horizontal lower stage horizontal portion 13f positioning lower than the upper stage horizontal portion 13e; and a front up slope portion 13h sloping upward toward a front of the vehicle body, and having a fragile portion 13g on the slope portion; are at least formed in this order from a rear end 13a of the rear frame 13 toward the front.SELECTED DRAWING: Figure 2
【課題】車体の重量増加の無いリヤフレーム構造により、後突時の衝撃エネルギーを十分に吸収できるようにすること。【解決手段】車体後方の両側に設けられるリヤフレーム13は、中空断面で前後に延在し、この延在する上面が水平な水平上面13cと、下方側に凸状に突き出す凸状下面13dとを有する。凸状下面13dは、少なくとも、水平な上段水平部13eと、段部を介して上段水平部13eよりも下方に位置する水平な下段水平部13fと、車体前方側に上方へ傾斜し、この傾斜面に脆弱部13gを有する前上傾斜部13hとを、リヤフレーム13の後端13aから前方に向かって順次形成して成る構成とする。【選択図】図2
REAR FRAME STRUCTURE OF VEHICLE
自動車のリヤフレーム構造
2021-06-10
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |