Torsion beam longitudinal arm coupler and torsion beam suspension system

Abstract

The invention provides a torsion beam longitudinal arm coupler. The torsion beam longitudinal arm coupler includes a first coupling part and a second coupling part, wherein the first coupling part is used for being coupled to a torsion beam longitudinal arm, and the second coupling part is used for being coupled to a vehicle body or a vehicle frame; the second coupling part includes a first coupling module and a second coupling module parallel to the first coupling module. A torsion beam suspension system includes a torsion beam suspension and the torsion beam longitudinal arm coupler which is coupled to the longitudinal arm of the torsion beam suspension. According to the torsion beam longitudinal arm coupler and the torsion beam suspension system, the coupling modules are added to decompose force, one of the coupling modules only bears X-directional force, the other of the coupling modules only bears Y-directional force, and therefore the torsion beam longitudinal arm coupler and the torsion beam suspension system can be applied to large-size heavy-axle-load medium-sized vehicles and vehicles larger than the medium-sized vehicles. The whole design is simple, the service life is prolonged, and the comfort of the vehicles can be ensured.

Description

technical field [0001] The invention relates to a rear suspension system of a passenger car, in particular to a torsion beam trailing arm coupler and a suspension system of a passenger car. Background technique [0002] The torsion beam suspension system is a rear suspension system widely used in A-class cars and cars below. The torsion beam suspension has the advantages of simple structure, light weight and low cost. See figure 1 In the shown typical connection structure of the torsion beam, the trailing arm bushing 5 is press-fitted into the bushing outer tube of the trailing arm 2, and the torsion beam suspension 4 is assembled to the vehicle body or the body frame (not shown) through the bolts 3 . [0003] Since the torsion beam suspension 4 is connected with the vehicle body only through two left and right bushes 5 , the X and Y direction forces on the torsion beam suspension 4 are transmitted to the vehicle body through these two bushes 5 . This causes the bushing 5...

AI Technical Summary

Problems solved by technology

Bushing 5 is subjected to X-direction force f x and the Y-direction force f y , so the design of the bushing 5 is difficult and easy to damage; often in order to ensure the life of the bushing 5, part of the shock isolation performance is sacrificed, which makes it difficult to guarantee the smoothness of the vehicle

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