Torsion beam type suspension

Abstract

Disclosed is a torsion beam type suspension wherein intermediate sections (21c, 22c) of left and right trailing arms (21, 22) are connected together by a torsion beam (23). The torsion beam (23) is provided with front and rear beam wall sections (43, 44). Furthermore, the front and rear beam wall sections (43, 44) are formed in such a way that the stiffness of the rear beam wall section (44) is lower than that of the front beam wall section (43). That portion of the torsion beam (23) which is in the vicinity of an intermediate section in the vehicle width direction has a bent section (41) which is formed in such a way that the rear beam wall section (44) is bent rearward.

Description

technical field [0001] The present invention relates to a torsion beam type suspension in which a pair of left and right trailing arms are connected by a torsion beam, and a wheel is suspended on the pair of connected left and right trailing arms. Background technique [0002] In the torsion beam type suspension, the base ends of the left and right trailing arms are swingably provided on the vehicle frame via support shafts, and the left and right wheels are respectively rotatably provided at the front ends (free ends) of the left and right trailing arms. ), the left and right trailing arms are connected by torsion beams, and the vicinity of the free ends of the left and right trailing arms are respectively supported by springs and shock absorbers (for example, refer to Patent Document 1). [0003] When a relatively low-frequency vibration is transmitted from the road surface to the torsion beam suspension disclosed in Patent Document 1 via left and right wheels while the ve...

AI Technical Summary

Problems solved by technology

When the frame vibrates in the up and down direction, the up and down vibration is transmitted to the body, which may generate low-frequency vehicle driving noise and bring discomfort

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