The invention relates to the technical field of automobiles, in particular to an electric vehicle rear auxiliary frame with cavities formed in the side face. The defect of high defect rate of products is avoided; the defect of stress concentration in the connecting area of the longitudinal beam and the transverse beam is completely overcome, and stress concentration points are blocky and dispersed along the blocks. Comprising a rear auxiliary frame body which is integrally cast and formed at low pressure, the rear auxiliary frame body comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam, the cross section of a shell structure of the front cross beam and the rear cross beam is in a concave shape, and the tops are sealed and the bottoms are open; the left longitudinal beam and the right longitudinal beam are of side face shell groove structures, side reinforcing grooves are formed in the sealed side faces of the tops of the left longitudinal beam and the right longitudinal beam, and each side reinforcing groove comprises an inclined sliding groove part, a middle camber beam frame groove part and a lower inclined arch body groove part. The whole left longitudinal beam or the whole right longitudinal beam is in a U shape or a character shape, the front end of the left longitudinal beam or the right longitudinal beam extends to be provided with a transition beam, and the transition beam is covered with an arch shell.

    本发明涉及汽车领域技术领域,具体为一种侧面分空腔电动车后副车架。避免了产品缺陷率高的缺点;纵梁与横梁连接区域应力集中现象的缺点被完全克服,应力集中点块状化,并且沿块进行分散。包括低压一体铸造成型的后副车架本体,其中:所述后副车架本体包括前横梁、后横梁、左纵梁、右纵梁,前横梁、后横梁的壳体结构截面为凹字形状,顶部密封底部开敞;左纵梁、右纵梁为侧面壳槽结构,两者顶部密封侧面设置侧加强槽,所述侧加强槽包括斜滑槽部、中弯梁框槽部、下斜拱体槽部;整个左纵梁或右纵梁整体为U形状或へ字符形状形状,且前端还延伸设置过渡梁,所述过渡梁上覆盖设置拱壳。


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    Title :

    Rear auxiliary frame of electric vehicle with cavities formed in side faces


    Additional title:

    一种侧面分空腔电动车后副车架


    Contributors:
    LIU LIMING (author) / WENG SHENGFENG (author) / XU DONGJIE (author) / YUE LIFENG (author) / LU DONGPING (author) / YUAN WEI (author) / SHEN LIANGPENG (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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