The invention discloses a column B lower joint structure with multiple force transmission paths and aims to solve the problems that in a conventional B column scheme, during side collision and column collision, the non-deformability is poor, and in an actual complex collision scene, the members are generally protected, and the C-NCAP standard of the 2021 version is difficult to meet, and the star-level requirement is difficult to meet. The column B lower joint structure comprises an outer door sill, an inner door sill, a B column reinforcing plate, a door sill reinforcing plate and a B column inner plate, wherein the side, away from the outer door sill, of the inner door sill is fixedly connected with a floor and a seat cross beam; the cross section of the outer door sill and the cross section of the inner door sill are n-shaped; the outer door sill and the inner door sill are in lap joint to form a main door sill cavity protruding towards the two sides; and a B column inserting hole is formed in the position, corresponding to a B column, of the outer door sill; a part of the B column reinforcing plate is inserted into the main doorsill cavity through the B column inserting hole; and the part, inserted into the main doorsill cavity, of the B column reinforcing plate is in lap joint with the outer doorsill and the inner doorsill. Two main paths are arranged on a side collision stress path and a column collision stress path, so that the force transmission path is more direct, and the force can be transmitted out more directly.
本发明公开了一种多传力途径的B柱下接头结构,旨在解决常规的B柱方案侧碰、柱碰时,抗变形能力较弱;在实际复杂的碰撞情景下,对成员的保护一般;难以达到2021版C‑NCAP标准很难满足星级要求的不足。该发明包括外门槛、内门槛、B柱加强板、门槛加强板以及增B柱内板,内门槛远离外门槛一侧固定连接有地板和座椅横梁,外门槛和内门槛横截面呈几字形,外门槛与内门槛搭接形成向两侧鼓出的主门槛腔体,外门槛对应B柱位置设有B柱插孔,B柱加强板部分经B柱插孔插入到主门槛腔体中,B柱加强板插入主门槛腔体部分分别与外门槛以及内门槛搭接。从发生侧碰、柱碰受力路径上,有两条主路径,传力路径更直接,这样可以让力更直接传出去。
Column B lower joint structure with multiple force transmission paths
一种多传力途径的B柱下接头结构
2021-05-14
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Column A lower joint structure, automobile body structure and automobile
European Patent Office | 2022
|European Patent Office | 2022