Patent ID: 6047978
Filing Date: 2000-04-11
Classification: B60G

Abstract:
A wheel suspension of a vehicle having a vehicle body and a pair of front wheels and a pair of rear wheels, comprising:a pair of trailing arms arranged to extend substantially longitudinally of the vehicle in a laterally symmetrical relationship with respect to a longitudinal center line of the vehicle with a front end of each trailing arm of the pair of trailing arms being pivotably mounted to the vehicle body while a rear end of each trailing arm rotatably supports a corresponding wheel of one of the pair of front wheels or the pair of rear wheels, anda torsion beam of a substantially U-shaped cross-section extending laterally between the pair of trailing arms with opposite ends of the torsion beam being fixed to each trailing arm by welding forming a pair of substantially U-shaped weld seams, wherein the torsion beam is oriented to open the substantially U-shaped cross-section rearwardly and at least one edge of the pair of open edges of the torsion beam is formed with a notch adjacent each end of the torsion beam for relieving a surface tensile stress exerted across the weld seam.