Closed type torsion beam

Abstract

The invention discloses a closed type torsion beam. The closed type torsion beam mainly comprises a crossbeam, casing pipes, longitudinal arms, spring plates and hub supports. The two ends of the crossbeam are fixedly connected with the longitudinal arms, the casing pipes are arranged on the sides, near the crossbeam, on the longitudinal arms, the spring plates are connected and fixed to the crossbeam and the longitudinal arms, supports A are fixed to the rear portions of the spring plates, bosses are arranged at the tail ends of the longitudinal arms, holes are formed in the bosses, round supports B are arranged in the holes, the supports B correspond to the supports A in position, shock absorber installation supports are composed of the supports B and the supports A jointly, the hub supports are arranged at the outer ends of the longitudinal arms and located on the sides away from the crossbeam, the hub supports are further provided with rabbit-ear-shaped boss plates, and the boss plates and the hub supports are connected through bolts and welded joints. The closed type torsion beam has the beneficial effects that the structure is simple and compact, design is reasonable, the torsional rigidity and the first-order modal of the torsion beam can be improved, local stress is reduced, strength is improved, the same design goal is achieved, a thinner material can be adopted, and light-weight design is achieved through a reasonable layout of the structure.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a closed torsion beam. Background technique [0002] The existing torsion beam structure has the following defects: [0003] 1. The structure design of the rear beam is complex and bulky; [0004] 2. Most of them use V-shaped beams, which are composed of a pressed V-shaped plate. The overall first-order torsional performance of such torsion beams is low, and the first-order mode is also low; [0005] 3. The spring disk has a heavy mass. In terms of structure, it is easy to generate large local stress on the torsion beam beam and the spring disk when subjected to the lateral extreme working condition, and the service life is low. Contents of the invention [0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a closed torsion beam. [0007] The purpose of the present invention is accomplished through the following technical solutio...

AI Technical Summary

Problems solved by technology

[0003] 1. The structure design of the rear beam is complex and bulky;

[0004] 2. Most of them use V-shaped beams, which are composed of a pressed V-shaped plate. The overall first-order torsional performance of such torsion beams is low, and the first-order mode is also low;

[0005] 3. The mass of the spring plate is heavy. In terms of structure, it is easy to generate large local stress on the torsion beam beam and the spring plate when subjected to the lateral limit working condition, and the service life is low.

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