Platform-based expandable rear torsion beam suspension structure

Abstract

An object of the present invention is to provide a platform-based expandable rear torsion beam suspension structure to solve the problems in the prior art. The platform-based expandable rear torsion beam suspension structure includes a cross beam and longitudinal arm assemblies symmetrically and fixedly connected to both ends of the cross beam. The cross beam includes a middle section and adjustment sections integrally connected to both sides of the middle section. The cross section of each adjustment section is a closed figure. The end portion of each adjustment section is a connection end attached and welded to the surface of the longitudinal arm assembly. The platform-based expandable rear torsion beam suspension structure can provide a better load-bearing capacity in a lightweight state, improves the margin of an index in the design, has good adaptability to different platforms and vehicles of different sizes, reduces the complicated and repeated labor in design and research and development verification, improves design production efficiency and further reduces production cost.

Description

technical field [0001] The invention relates to the technical field of vehicle suspension structures, in particular to an expandable platform-based rear torsion beam suspension structure. Background technique [0002] The torsion beam rear suspension is commonly used in small and medium-sized models because of its small space and cost. Its appearance is similar to the trailing arm type, and there is a crossbeam in the middle that takes into account torsion resistance and support. The longitudinal arms on both sides of the crossbeam are used for positioning in the front and rear directions. . Through the adjustment of the position of the crossbeam, the characteristic parameters such as roll center height, roll stiffness, and roll steering are designed for chassis performance. The torsion beam suspension and its components that are more common on the market are generally only applicable to a single car model, and the scalability between different car models on the same platf...

AI Technical Summary

Problems solved by technology

The torsion beam suspension and its components that are more common on the market are generally only applicable to a single model, and the scalability between different models on the same platform is poor, which leads to repeated waste of work such as design, development and verification.

At the same time, the torsion beam models currently on the market are mainly in the form of non-closed open beams. This form of torsion beam has a limited load-carrying capacity and expansion capacity. In view of the current research and development status of new energy vehicles, new energy vehicles have no impact on the continuous driving of the whole vehicle. In terms of mileage requirements, the weight of new energy vehicles is larger than that of traditional vehicles (the weight of batteries and motors). When designing the platform architecture of new energy vehicles, it is necessary to consider the platform expansion and the possibility of its load increase.

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