In order to achieve the purpose of transmitting a rear impact load input to the front end of a side member to the rear of the side member without increasing mass and cost, the present invention describes a vehicle lower body structure comprising: a side member disposed on the outer side in the vehicle width direction at the lower part of the vehicle and having a closed cross-section formed therein that extends in the front-rear direction of the vehicle; the wheels are positioned in front of the side beams; wherein the side beam is provided with an outer side beam, and the outer side beam is provided with a front end part and a main body part located behind the front end part; in the front end part of the outer side beam, an outer side reinforcing member is jointed from the inner side or the outer side of the closed cross section, and the outer side reinforcing member has a shape along the front side surface part and the side surface part of the front end part; the front end of the main body part is opposite to the rear end of the side surface part of the outer reinforcing member in the front-rear direction of the vehicle; the main body portion has a protruding portion that protrudes toward the inside of the closed cross-section relative to the rear end of the side surface portion.
为了实现将输入侧梁前端部的后方冲击载荷向侧梁后方传递并且不会增加质量和成本的目的,本发明记载了一种车辆下部车身结构,其具备:侧梁,配置于车辆下部且车宽方向外侧,在内部形成在车辆前后方向上延伸的闭口截面;车轮,位于侧梁的前方;其中,侧梁具备外侧梁,所述外侧梁具有前端部以及位于前端部的后方的主体部;在外侧梁的前端部中,外侧加强构件从闭口截面的内侧或外侧接合,并且所述外侧加强构件具有沿着该前端部的前侧面部和侧面部的形状;主体部的前端在车辆前后方向与外侧加强构件的侧面部的后端相向;主体部具有相对于侧面部的后端向闭口截面的内侧突出的突出部。
Lower vehicle body structure of vehicle
车辆的下部车身结构
2024-07-09
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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