The invention discloses a rear lower vehicle body frame structure which comprises rear beam assemblies parallel set at left and right sides in the longitudinal direction and threshold inner plates andalso comprises a first rear cross beam, a second rear cross beam, a third rear cross beam, a fourth rear cross beam body, a seat pit cross beam and a tail end cross beam which are horizontally set inorder front front to back. Each rear beam assembly comprises a rear beam body and a rear beam cover plate, the cross section of the rear beam body and the cross section of the rear beam cover plate are both in an inverted-Z shape, the upper side and the lower side of the rear beam body and the upper side and the lower side of the rear beam cover plate are fixed in a two-layer mode respectively, and a closed cavity with the square cross section is defined. The rear lower vehicle body frame structure is simple in structure, the strength and modality of a seat pit are improved, the size controlprecision is improved, the use space in a vehicle is enlarged, and the torsional rigidity is improved.

    本发明公开一种后部下车体框架结构,包括纵向平行设置于左右两侧的后大梁组件和门槛内板以及由前至后依次横向设置的第一后横梁、第二后横梁、第三后横梁、第四后横梁本体、座椅坑横梁和尾端横梁,所述后大梁组件包括后大梁本体和后大梁盖板,所述后大梁本体和所述后大梁盖板的横截面均为倒“Z”字形,所述后大梁本体的上下两侧和所述后大梁盖板的上下两侧分别两层式固定且围设形成横截面为“口”字形的封闭腔体。本发明的一种后部下车体框架结构结构简单、提高座椅坑的强度和模态、提高尺寸的控制精度、加大车内的使用空间和提高扭转刚度。


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    Title :

    Rear lower vehicle body frame structure


    Additional title:

    一种后部下车体框架结构


    Contributors:
    TANG CHUNLIU (author) / LI ZHITENG (author) / WU JIAZHENG (author) / ZHOU WENBIN (author) / LAO BING (author) / LONG HANG (author)

    Publication date :

    2021-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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