Twist beam type rear suspension reinforced against side force with

Abstract

A twist beam type rear suspension having a pair of trailing arms disposed to extend along opposite sides of a vehicle as pivotably supported from a vehicle body at front ends and supporting at rear ends rear vehicle wheels to be rotatable about respective axes of rotation, a twist beam connected between the pair of trailing arms and twistable about an axis of twisting, an assist link having a central portion disposed substantially transversely in the vehicle as supported from the vehicle body and opposite end portions movable relative to the vehicle body, and a pair of control links each having a first end pivotably connected with each trailing arms at its portion adjacent its front end and a second end pivotably connected with each end portion of the assist link, wherein the opposite end portions of the assist link are either movable in the longitudinal direction relative to the vehicle body in the same phase but unmovable in the longitudinal direction relative to the vehicle body in the phases opposite to one another and also unmovable in the transverse direction relative to the vehicle body or movable in the transverse direction relative to the vehicle body in the phases opposite to one another but unmovable in the transverse direction relative to the vehicle body in the same phase, a phantom straight line passing pivot centers of the pivoting connections at the first and second ends of each control link intersects one another at a point positioned transversely central in the vehicle and longitudinally in a region extending rearward from a point substantially around the axes of rotation of the vehicle wheels as viewed from the top of the vehicle, and a phantom straight line passing a pivot center of the pivoting support of the front end of each trailing arm and one of the first and second ends of each control link traverses the axis of twisting.