To provide a front sub frame structure capable of being folded and deformed downward surely, with a fragile part as an origin, when a front collision load is input.SOLUTION: A front sub frame structure comprises: a pair of right and left side members 16, 16 extending in a vehicle longitudinal direction; a cross member 18 extending in a vehicle width direction; load reception parts each of which is provided on a vehicle front end of each side member 16 for receiving a load from a vehicle front side; fitting points provided on a vehicle body side member; brackets 27 each of which is provided between the fitting point along a vehicle longitudinal direction of the side member and a fragile part, and to which a stabilizer 24 is fitted; and fragile parts 30 for promoting folding/deformation downward of each side member 16 when a front collision load is input. An inside flange part 44 in a vehicle width direction inside of each bracket 27 is provided in parallel to a side face of an inside side wall 17c of the side member 16 in the vehicle width direction inside.SELECTED DRAWING: Figure 2
【課題】前突荷重が入力された際、脆弱部を起点として確実に下方側へ向かって折れ変形させること。【解決手段】車両前後方向に延びる左右一対のサイドメンバ16、16と、車幅方向に延びるクロスメンバ18と、各サイドメンバ16の車両前端に設けられて車両前方からの荷重を受ける荷重受け部と、車体側部材に取り付けられる取付点と、各サイドメンバの車両前後方向に沿った取付点と脆弱部との間に設けられ、スタビライザ24が取り付けられるブラケット27と、前突荷重入力時に各サイドメンバ16の下方へ向けた折れ変形を促進する脆弱部30とを備え、ブラケット27の車幅方向内側の内側フランジ部44は、各サイドメンバ16の車幅方向内側の内側側壁17cの側面と平行に設けられている。【選択図】図2
FRONT SUB FRAME STRUCTURE
フロントサブフレーム構造
2021-02-15
Patent
Elektronische Ressource
Japanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |