Rear suspension using a torsional spring integral with trailing arm

摘要

A vehicle suspension system is provided including a trailing arm which is adapted to be pivotally connected to a frame of the vehicle. A wheel assembly is mounted to a first end of the trailing arm and a torsion element is integrally mounted within the trailing arm. A crank arm is provided having a first end mounted to the torsion element and a second end which is substantially fixed against movement in a vertical direction. As the trailing arm moves in a vertical direction, the crank arm provides torsion to the torsion element which acts as a spring for the vehicle suspension. By substantially mounting the entire suspension system directly below the vehicle frame rails, increased space is available between the wheels for luggage, fuel and spare tire storage. The rear suspension package is substantially reduced in both size and weight.