Rear auxiliary frame assembly and vehicle

Through the closed graphic cross-section and integrated stamped bracket design, the structural strength and durability of the rear subframe are improved, and the problem of poor load-bearing and transfer capacity in the prior art is solved, and the comfort and NVH performance of the whole vehicle are improved, while reducing weight and cost.

CN223116446UActive Publication Date: 2025-07-18GUANGZHOU AUTOMOBILE GROUP CO LTD
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Patent Information

Application Number
CN202421846928.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2025-07-18
Estimated Expiration
2034-07-31

AI Technical Summary

Technical Problem

The existing rear subframe structure has poor load-bearing and transmission capacity, and the structural strength, durability, modal and dynamic stiffness performance are low, resulting in poor vehicle comfort and NVH performance. Increasing component cross-section or material thickness will affect product lightweighting and increase cost.

Method used

The front cross-beam, rear cross-beam, left cross-beam and right longitudinal beam with closed-type cross-section are designed, combined with the integrated stamped upper swing arm mounting bracket and the welded lower swing arm mounting bracket to form a closed frame structure, enhancing the weld durability of the joint area, and reducing weight through the hollow tubular structure.

Benefits of technology

It improves the overall bending and torsion mode of the subframe, enhances structural strength and durability, reduces the number of parts and welding processes, reduces weight, improves the comfort and NVH performance of the entire vehicle, and reduces production costs.

✦ Generated by Eureka AI based on patent content.
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Abstract

The rear auxiliary frame assembly comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam, the front cross beam is located in front of the rear cross beam, the left longitudinal beam extends in the front-back direction along an arc protruding towards a passenger compartment, and the right longitudinal beam extends in the front-back direction along an arc protruding towards a passenger compartment. The left longitudinal beam extends in the front-back direction along an arc protruding towards a passenger compartment, the right longitudinal beam extends in the front-back direction along an arc protruding towards the passenger compartment, the two upper swing arm mounting supports are symmetrically arranged in the left-right direction, the lower swing arm mounting supports are arranged at the bottom of a rear cross beam, and the outlines of the cross sections of the front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam are all in a closed pattern. According to the rear auxiliary frame assembly, the overall bending and torsion modes of the rear auxiliary frame are improved, the structural strength of the auxiliary frame is improved, it is guaranteed that the auxiliary frame has enough durability and reliability, and on the premise that the reliability, durability and comfort of the whole vehicle structure are met, the number of parts and welding procedures are reduced, and the weight of the auxiliary frame is reduced.
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