Patent ID: 6752409
Filing Date: 2004-06-22
Classification: B60G

Abstract:
Wheel suspension for a driven rear wheel of a motor vehicle, comprising:an inclined shock absorber strut, and a wheel-supporting wheel carrier, which is connected to the vehicle by way of wheel guide members, which are spaced vertically apart from each other, the wheel guide members being arranged above and below a horizontal plane running through a spin axis, and being mounted on the wheel carrier as well as on a vehicle body, thereby an elastokinematic axis and a kinematic trailing axis are formed at the wheel; wherein the shock absorber strut is mounted on the wheel carrier on a wheel carrier-side bearing; wherein the wheel guide member arranged above the spin axis comprises two open wishbones, which diverge in a direction of body-sided bearings, are disposed in two planes, which are spaced apart, and are hinged to the wheel carrier on both sides of a vertical wheel center transverse plane on wheel carrier-side bearings at upper wishbone bearing points; wherein the wheel guide member arranged below the spin axis, comprises an A-frame arm and a steering tie rod, the A-frame arm being hinged on body-side bearings at body-side bearing points in front of the vertical wheel center transverse plane, and located in an inclined plane, formed in a direction of travel, and mounted to the wheel carrier on an A-frame wheel carrier-side bearing at an A-frame bearing point; wherein the steering tie rod is mounted on the wheel carrier on a wheel carrier-side bearing at a steering tie rod bearing point behind the wheel center transverse plane; wherein for all forces acting on the wheel, coordinated bearing characteristics of the wheel guide members and the position of the elastokinematic axis in interaction with the trailing axis result in an ideal swivel axis for the wheel; wherein predetermined directions of movement of the wheel carrier-sided bearings of two links of the wheel guide members result in pole rays, which meet in front of the wheel center transverse plane and above the horizontal plane running through the spin axis, and form a pitching pole for antidive and antisquat; wherein an ideal upper pole for the kinematic trailing axis, which lies outside a track width, is formed at an intersection of the longitudinal axes of the two wishbones, a bottom point for the trailing axis is formed by the wheel carrier-side bearing of the A-frame arm, which is located in front of the vertical wheel center transverse plane and inside the track width, and the bearing points of the upper wishbones lie approximately in a vertical plane, which runs approximately parallel to the wheel center longitudinal plane and according to which the bearing points of the steering tie rod and the bottom A-frame arm lie in another vertical plane, which crosses the vertical plane; wherein the ideal upper pole, formed by the two upper wishbones, for the kinematic trailing axis lies also at the vertical wheel center transverse plane; and wherein a front wishbone of the two wishbones is arranged to cross the link arm of the bottom A-frame arm and also a rear wishbone of the two wishbones is arranged to cross the steering tie rod.