The invention provides a vehicle bottom structure which can effectively reduce wind resistance and lift force. The vehicle underbody structure includes: a suspension system having a trailing arm provided on an inner side of a rear wheel in a vehicle width direction, and a torsion beam extending in the vehicle width direction to connect the trailing arm; a first bottom surface provided in front of the torsion beam in the front-rear direction of the vehicle; and a second bottom surface provided rearward of the torsion beam in the vehicle front-rear direction, in which the first bottom surface is formed with a rear edge portion at a rear edge in the vehicle front-rear direction, the rear edge portion extending toward the torsion beam in the vehicle front-rear direction, and the second bottom surface is provided rearward of the torsion beam in the vehicle front-rear direction. The front end of the second bottom surface in the front-rear direction of the vehicle includes a front end portion, and an imaginary plane formed by connecting the rear edge portion of the first bottom surface and the lower surface of the front end portion of the second bottom surface is formed at a position lower than the torsion beam in the up-down direction of the vehicle when the vehicle is stationary.
本发明提供一种车辆底部结构,能够有效减少风阻与升力。车辆底部结构包括:悬架系统,具有设置在后轮的车宽方向的内侧的纵臂、以及沿着所述车宽方向延伸以连结所述纵臂的扭转梁;第一底面,设置于所述扭转梁在车辆前后方向上的前方;以及第二底面,设置于所述扭转梁在所述车辆前后方向上的后方,其中所述第一底面在所述车辆前后方向上的后缘形成有后缘部,所述后缘部沿着所述车辆前后方向朝向所述扭转梁延伸,所述第二底面在所述车辆前后方向上的前端包括前端部,且在车辆静止的状态下,所述第一底面的所述后缘部与所述第二底面的所述前端部的下表面相连所形成的假想面,在车辆上下方向上形成于较所述扭转梁更下方的位置。
Vehicle underbody structure
车辆底部结构
2024-11-22
Patent
Electronic Resource
Chinese