Vehicle rear suspension

A rear suspension comprising left and right trailing arms which are pivoted on the vehicle body at the front ends for vertical swinging motion by way of rubber bushings, and a torsion beam connecting the trailing arms, comprising tow control means respectively disposed at said front ends of the trailing arms for controlling the outer rear wheel with respect to a resultant side force on the rear wheel such that, in response to the vehicle body being turned, the toe characteristic of the outer rear wheel is changed toward a toe-out direction in response to an increase of the side force on the rear wheels when the side force is weak and a toe-in direction in response to a increase of the side force when the side force is strong and where the pivotal axes of the trailing arms are inclined in the horizontal plane so as to intersect forwardly on a line joining the rubber bushings, and where said toe control means comprises the rubber bushings where each bushing has such elastic characteristics as to be soft in the direction perpendicular to the pivotal axis of the corresponding trailing arm in the horizontal plane including the pivotal axis in a small displacement range and to be hard in the same direction in a large displacement range where the inclination of the pivotal axes of the trailing arms and the elastic characteristics of the bushings are such that the bushing associated with the outer rear wheel will be deformed in a direction rearward of said line joining the rubber bushings in said small displacement range and in a direction forward of said line joining the rubber bushings in said large displacement range.

A rear suspension comprising left and right trailing arms which are pivoted on the vehicle body at the front ends for vertical swinging motion by way of rubber bushings, and a torsion beam connecting the trailing arms, comprising toe control means respectively disposed at said front ends of the trailing arms for controlling the resultant side force such that, in response to the vehicle body being turned, the toe characteristic of the outer rear wheel is defined by a curve in which the rate of increase of toe-out with respect to increasing side force decreases as the side force increases and where the pivotal axes of the trailing arms are inclined in the horizontal plane so as to intersect forwardly on a line joining the rubber bushings, and where said toe control means comprises the rubber bushings where each bushing has such elastic characteristics as to be soft in the direction perpendicular to the pivotal axis of the corresponding trailing arm in the horizontal plane including the pivotal axis in a small displacement range and to be heard in the same direction in a large displacement range where the inclination of the pivotal axes of the trailing arms and the elastic characteristics of the bushings are such that the bushing associated with the outer rear wheel will be deformed in a direction rearward of said line joining the rubber bushings in said small displacement range and in a direction forward of said line joining the rubber bushings in said large displacement range.