Torsion beam assembly

Abstract

The invention provides a torsion beam assembly which comprises a spring base, a transverse beam and a longitudinal arm. The torsion beam assembly further comprises a reinforcing cover plate, the reinforcing cover plate is respectively connected with the transverse beam and the longitudinal arm, and the spring base is arranged on the reinforcing cover plate. The torsion beam assembly has the advantages that connecting strength of the transverse beam and the longitudinal beam can be enhanced through the reinforcing cover plate, the spring base can be arranged on the reinforcing cover plate, force is prevented from being directly transmitted to the transverse beam from the spring base, torsional force of the transverse beam is decreased, and torsion deformation of the transverse beam is reduced.

Description

technical field [0001] The invention relates to a torsion beam assembly, in particular to a torsion beam assembly used in a torsion beam semi-independent suspension system. Background technique [0002] The torsion beam semi-independent suspension is the commonly used rear suspension structure of automobiles at present. It has the advantages of simple structure, low cost and small space occupation. The trailing arm is welded together, the front end of the trailing arm is connected with the body through rubber-metal support, and the rear end of the trailing arm is connected with the wheel hub, shock absorber and spring. The longitudinal arm of the torsion beam can swing up and down around the rubber hinge point to absorb vibration through the shock absorber and spring. When the deformation of the suspension on both sides is unequal, the torsion beam will twist and deform, which can play the role of a lateral stabilizer. The torsion beam assembly is the key component of the t...

AI Technical Summary

Problems solved by technology

For example, if the structural design margin of the longitudinal arm 102 and the beam 101 is insufficient or the quality of the weld is slightly poor, cracks are likely to occur in the structurally weak areas 104 such as the weld and its vicinity, and under the action of alternating stress, the rapid expansion of the weld causes torsional force Beam failure, in severe cases, the torsion beam fails, affecting the driving safety of the car

[0006] 2) When the left / right wheels bounce asymmetrically due to road conditions, the crossbeam 101 is twisted and deformed. Since the spring seat 103 overlaps the crossbeam 101, the spring seat 103 twists and deforms along with the crossbeam 101, causing the spring seat 103 to contact the crossbeam. 101 Stress concentration in welding area 105, cracking is easy to occur when the design margin is insufficient or the quality of the weld is poor. In severe cases, the torsion beam fails, which affects the driving safety of the car

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