Coupled torsion beam axle apparatus of vehicle

Abstract

A coupled torsion beam axle apparatus of a vehicle includes: a left torsion bar and a right torsion bar arranged in an internal space of the torsion beam so to be separated from each other in a horizontal direction of a torsion beam. Torsion stiffness of the torsion beam is tuned by replacing the left torsion bar and the right torsion bar, and particularly, warping stiffness is tuned by changing aposition where the left torsion bar is coupled to the torsion beam and a position where the right torsion bar is coupled to the torsion beam.

Description

technical field [0001] The present invention relates to a combined torsion beam type axle device of a vehicle, and more particularly relates to a technology of a combined torsion beam type axle device of a vehicle capable of adjusting torsional stiffness and warping stiffness. Background technique [0002] Generally, the suspension of a vehicle is a device that prevents damage to the body or cargo and improves ride comfort by connecting the axle and the body to each other so that vibration or shock from the road is not directly transmitted to the body when the vehicle is running. Vehicle suspension is mainly divided into front suspension and rear suspension. [0003] The vehicle includes a combined torsion beam type axle device as a rear suspension, which includes a torsion beam formed in an open loop shape having a U-shaped or V-shaped cross-section, the left and right sides of which are each connected to a trailing arm; The torsion bars in the inner space of the beam are ...

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional torsion beam combined axle device, since the torsion bar for auxiliary stiffness is integrally joined to the trailing arm by welding, the torsion bar cannot be replaced, and the position of the torsion bar cannot be changed.

Therefore, torsional stiffness and warpage stiffness cannot be adjusted

[0006] In other words, a racing car or a high-performance vehicle should be able to adjust torsional stiffness and warpage stiffness in consideration of driving characteristics when necessary, but in conventional torsion-beam-incorporated axle arrangements as described above, it is not possible to replace the torsion bar or change its position , therefore, for racing or high-performance vehicles that require adjustment of roll stiffness, the vehicle's combined torsion beam axle arrangement cannot be used

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