Coupled torsion beam axle for vehicles

Abstract

A coupled torsion beam axle for vehicles may include a torsion beam disposed in a vehicle width direction and trailing arms disposed at both ends of the torsion beam in a length direction of a vehicle body, wherein the torsion beam has an opened cross section formed in a reverse ''U'' shape by press-forming one sheet member machined so that lengths of right and left sides are different from each other on the basis of a center, and cross section widths which are different from each other along vehicle width directions of both sides on the basis of the center between the trailing arms of both sides, and front and rear surfaces formed in a wave shape along the vehicle width directions of both sides on the basis of the center.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2015-0063351 filed May 6, 2015, the entire contents of which are incorporated herein by reference for all purposes. technical field [0003] The present invention relates to a coupled torsion beam axle for a vehicle, and more particularly, to a coupled torsion beam axle for a vehicle capable of securing roll rigidity of the torsion beam and relieving the torsion caused by torsion. Vibration of a tuning fork that occurs when a beam is bent vertically. Background technique [0004] Since a coupled torsion beam axle (CTBA) for a vehicle is generally constructed of simple components and has a low design performance area, it also exhibits relatively high driving stability despite low production cost and light weight, so It has been applied to the rear suspension of small cars and small and medium-sized cars. [0005] A coupled torsion beam ...

AI Technical Summary

Problems solved by technology

[0009] However, in the torsion beam shaft according to the prior art, since the torsion beam 1 has a predetermined section, it may not be possible to elastically maintain the roll stiffness of the torsion beam 1

Consequently, the torsion beam axle not only exhibits behavioral characteristics that adversely affect the ride comfort, but also has the durability of the connection between the torsion beam 1 and the trailing arm 3 affected by the lateral, longitudinal forces transmitted via the trailing arm 3 and the problem of lowering the influence of braking force

[0010] Furthermore, torsion beam 1 is difficult to isolate vibrations caused by vertical bending

Therefore, there is a problem that when vibration is generated due to vertical bending, a tuning fork vibration phenomenon occurs along both sides of the torsion beam 1, and the vibration noise is transmitted to the interior of the vehicle, thereby increasing the noise of the vehicle body

Images