The invention provides an aluminum alloy doorsill beam applied to an automobile. The doorsill beam is of a structure shaped like a Chinese character mu. The doorsill beam comprises a first cavity unit, a second cavity unit and a third cavity unit which are sequentially connected and integrally formed, wherein the first cavity unit is a hollow isosceles trapezoid body, the second cavity unit and the third cavity unit are hollow cuboids, and a lower bottom face of the isosceles trapezoid body is integrally connected to one face of the second cavity unit. After the doorsill beam is adopted, when a vehicle is subjected to side collision, the doorsill beam has the energy absorption effect due to deformation of aluminum alloy, the first cavity unit of the isosceles trapezoid structure is the first-stage energy absorption cavity, the second cavity unit and the third cavity unit crumple step by step, and therefore the three-stage energy absorption effect is achieved, collision energy is prevented from being transmitted to structures inside and behind the automobile, the side collision capacity of the whole automobile is improved, and the weight of the automobile body is reduced.
本发明提供了一种应用于汽车的铝合金门槛梁,所述门槛梁呈“目”字形结构,所述门槛梁包括依次连接且一体成型的第一型腔单元、第二型腔单元和第三型腔单元,所述第一型腔单元为中空的等腰梯形体,第二型腔单元和第三型腔单元均为中空的长方体,所述等腰梯形体的下底面一体连接于所述第二型腔单元的一面。采用上述技术方案后,在车辆发生侧碰时,本申请的门槛梁除了铝合金本身变形而具备吸能效果之外,呈等腰梯形结构的第一型腔单元为第一级吸能型腔,第二型腔单元和第三型腔单元逐级溃缩,从而实现三级吸能效果,避免将碰撞能量传递给车内及车后的结构,提高了整车的侧碰能力且降低了车身重量。
Aluminum alloy doorsill beam applied to automobile
一种应用于汽车的铝合金门槛梁
2021-12-03
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |