Wheel suspension by trailing arms and torsion beam assembled by welding

Abstract

In a wheel suspension of a vehicle such as an automobile assembled from a pair of trailing arms arranged to extend substantially longitudinally of the vehicle in a laterally symmetrical relationship thereto with each front end thereof being pivotably mounted to the vehicle body while each rear end thereof rotatably supporting a corresponding one of either a pair of front wheels or a pair of rear wheels, and a torsion beam arranged to extend substantially laterally of the vehicle between the pair of trailing arms with opposite ends thereof being firmly connected thereto by welding, so as to form a link assembly assembled by a weld seam formed therebetween, the link is formed with at least one notch adjacent to a weld seam for relieving a surface tensile stress exerted across the weld seam according to a force acting between the trailing arms and the torsion beam.