The invention provides an automobile rear suspension torsion beam assembly, and belongs to the technical field of automobile suspensions. According to the technical scheme provided by the embodiment of the invention, the longitudinal arm is designed into a structure that the inner plate and the outer plate are connected in a tailor-welded manner, so that the strength and the fatigue performance of the automobile rear suspension torsion beam assembly are enhanced, the technical difficulty is small, the cost is lower, the material selection range is wide, the manufacturability of the torsion beam assembly product is greatly enhanced, and the production cost is reduced. The cross beam is designed to be of the tubular structure formed through cold punching, hydraulic expansion and heat treatment processes, the cross beam is designed to be of the variable cross-section shape, compared with an existing plate structure, the cross beam is lighter, the variable cross-section shape meets the requirement for strength durability, meanwhile, the torsional rigidity of the cross beam is improved, and the service life of the cross beam is prolonged. The operation stability and the NVH performance of the torsion beam assembly are improved, and the longitudinal impact bearing capacity of a rear axle is improved.

    本申请提供了一种汽车后悬架扭转梁总成,属于汽车悬架技术领域。本申请实施例提供的技术方案,通过将纵臂设计为内板和外板通过拼焊方式连接的结构,增强了该汽车后悬架扭转梁总成的强度和疲劳性能,技术难度小,成本较低,材料选择范围广,大大增强了该扭转梁总成产品的可制造性,通过将横梁设计为经过冷冲、液压胀型以及热处理工艺成型的管状结构,且将横梁设计为变截面形状,相比于现有的板材结构,上述横梁更轻,变截面形状在满足强度耐久的同时,提高了横梁的扭转刚度,提升了该扭转梁总成的操稳性能和NVH性能,提升了后轴的纵向冲击承载能力。


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    Title :

    Automobile rear suspension torsion beam assembly


    Additional title:

    汽车后悬架扭转梁总成


    Contributors:
    SONG DONGQI (author) / YANG ZHAN (author) / ZHANG FEI (author)

    Publication date :

    2022-05-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge



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