Automotive rear torsion beam structure

Abstract

The invention discloses a rear torsion beam structure of an automobile. The rear torsion beam structure comprises a transverse beam, wherein longitudinal beams are respectively arranged at two ends of the transverse beam; a lining sleeve is arranged at one end of each longitudinal beam; a shock absorber bracket is arranged at the other end of each longitudinal beam; hub brackets are arranged at the positions close to the shock absorber brackets on the bodies of the longitudinal beams; the transverse sectional surface of the transverse beam takes the shape of an inverted U; the cross section area of the transverse beam is gradually increased from the middle to two ends in a symmetric manner. Due to the adoption of the transverse beam of which the transverse sectional surface is U-shaped, torsion stress can be dispersed, the adjusting difficulty of torsion rigidity can be greatly reduced, and thus development and design of products can be facilitated; meanwhile, as the torsion stress of the transverse beam is mainly concentrated at two ends, and the middle of the transverse beam is relatively slightly stressed, both the requirement on the torsion rigidity of the transverse beam can be ensured and the space occupied by the transverse beam can be effectively reduced due to adoption of a variable cross section structure which has a small middle and large two ends of the transverse beam, and thus other automobile parts around the transverse beam fittings can be arranged conveniently.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to an automobile rear torsion beam structure. Background technique [0002] The rear torsion beam structure is the connecting force transmission device between the body and the wheels, which has an important impact on the safety, comfort and handling of the vehicle. At present, the commonly used rear torsion beam structure of automobile mainly includes a crossbeam, and the two ends of the crossbeam are respectively connected with longitudinal beams. On the beam body of the longitudinal beam, near the position of the shock absorber bracket, there are relatively spring seats for supporting the elastic element and hub brackets for installing the hub, where the hub bracket is located on the longitudinal beam away from the cross beam Surface arrangement, the rear torsion beam structure not only supports and installs corresponding automobile components, but also plays a r...

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Problems solved by technology

[0003] At present, the cross-beam of the rear torsion beam structure mainly adopts a V-shaped or square cross-section structure, which takes up a lot of space, and often needs to add torsion bar springs to adjust the torsional stiffness in platform-based applications, which undoubtedly complicates the platform-based design of products

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