In order to suppress collapse of a side member front end portion and obtain a reaction force in a vehicle width direction against an impact load inputted to the side member front end portion toward the inside in the vehicle width direction during a small overlap collision, a vehicle lower body structure of the present invention is provided with: a side member (10) disposed on the vehicle lower portion and on the outside in the vehicle width direction; a closed cross section (10s) extending in the front-rear direction of the vehicle is formed by the inner side beam (11) and the outer side beam (21) in cooperation. Wheels (6) located in front of the outer side beams (21); an outer reinforcing member (50) which has a shape that follows a front side surface section (271) and a side surface section (24) of the front end section (27) of the outer beam (21), and which is joined to the front end section (27) from the inside of the closed cross-section (10s); and an inner reinforcing member (60) which connects the front side surface portion (171) of the front end portion (17) of the inner side beam (11) and the side surface portion (14) in an intersecting manner.

    为了在小重叠碰撞时针对输入至侧梁前端部的朝向车宽方向内侧的冲击载荷抑制该侧梁前端部溃缩并获得车宽方向上的反作用力,本发明的车辆下部车身结构具备:侧梁(10),配置于车辆下部且车宽方向外侧,由内侧梁(11)和外侧梁(21)协同形成在车辆前后方向上延伸的闭口截面(10s);车轮(6),位于外侧梁(21)的前方;外侧加强构件(50),具有沿着外侧梁(21)的前端部(27)的前侧面部(271)和侧面部(24)的形状,并且从闭口截面(10s)的内侧与前端部(27)接合;内侧加强构件(60),以交叉状连结内侧梁(11)的前端部(17)的前侧面部(171)与侧面部(14)之间。


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    Title :

    Lower vehicle body structure of vehicle


    Additional title:

    车辆的下部车身结构


    Contributors:

    Publication date :

    2023-11-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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