The invention relates to the technical field of automobile body structures, and discloses a rear longitudinal beam, a rear floor assembly and an automobile. The rear longitudinal beam comprises a rear longitudinal beam body provided with a first curve area; the plurality of tangency points are arranged in the first curve area; the plurality of main reinforcing ribs are linearly arranged on the rear longitudinal beam body, the main reinforcing ribs correspond to the tangency points, a plurality of tangent lines are formed through the plurality of tangency points, and the plurality of main reinforcing ribs are respectively parallel to the plurality of tangent lines. The force transmission efficiency is improved through the linear design of the main reinforcing ribs, the main reinforcing ribs are arranged according to the collision force transmission path, the stress continuity of the main reinforcing ribs is guaranteed, and the restraining effect of the rear longitudinal beam on collision force transmission is improved; the trend of the rear longitudinal beam body is combined with the distribution of the main reinforcing ribs, the main reinforcing ribs can sequentially absorb collision energy, and the transmission efficiency of the collision energy is improved; therefore, the problem that the arrangement form of the reinforcing ribs in the rear longitudinal beam at present has a limited constraint effect on collision force transmission and cannot well absorb collision energy is solved.
本发明涉及汽车车身结构技术领域,公开了一种后纵梁、后地板总成及汽车。后纵梁包括:后纵梁本体,具有第一曲线区;若干切点,设置于第一曲线区;若干主加强筋,呈直线状地设置于后纵梁本体,主加强筋与切点对应设置,过若干切点形成有若干切线,若干主加强筋分别与若干切线相平行。本发明主加强筋的直线状设计提高力的传递效率,主加强筋遵循碰撞力的传递路径设置,保证其受力的连续性,提升对后纵梁对碰撞力传递时的约束作用;将后纵梁本体的走向与主加强筋的分布相结合,若干主加强筋能够依次吸收碰撞能量,提高撞击能量的传递效率;从而解决了目前后纵梁中加强筋的布置形式对于碰撞力传递时的约束作用有限,无法很好地吸收碰撞能量的问题。
Rear longitudinal beam, rear floor assembly and automobile
后纵梁、后地板总成及汽车
2024-09-13
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
European Patent Office | 2021
|Rear floor assembly, rear floor assembly manufacturing method and automobile
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