Wheel suspension
View Patent ↗A wheel is described in which the axle carrier is pivoted to a forked McPherson strut support, which in turn is joined with a McPherson strut on the one hand and a control arm on the other, wherein a dual bearing is present between the control arm and the forked McPherson strut support. The advantage to this is that the two bearings of the dual bearing can vary in stiffness, so that the resultant degree of freedom makes it possible to more exactly influence steering behavior, thereby enabling an improvement in the overall steering behavior of the vehicle. Even given an unchanged bearing bush stiffness by comparison to prior art, the greater distance between the bearing bushes and steering axis reduces the angle by which the forked McPherson strut supports can turn in the event of lateral forces.
1. A wheel suspension system for a motor vehicle, comprising:
an axle carrier;
a forked McPherson strut support having two opposed fork arms;
an upper and lower bearing coupling the axle carrier to the forked McPherson strut support and permitting the axle carrier to swivel relative to the forked McPherson strut support about a steering axis;
a McPherson strut having a lower end fixedly mounted to the McPherson strut support and configured to join the McPherson strut support with the body of the vehicle to absorb the vehicle load;
a control arm having a first end rotatably coupled to the McPherson strut support and extending into a gap formed by the fork arms, and having a second end substantially opposite the first end, the second end having an increased width relative to the first end and adapted to be hingedly coupled to the body of the motor vehicle at two longitudinally-spaced locations to enable rotation of the control arm about an axis that essentially extends in the longitudinal direction of the vehicle; and
two spaced bearings, which lie in front and back of the steering axis relative to the traveling direction, and form a dual bearing rotatably coupling the forked McPherson strut support to the first end of the control arm; wherein the control arm is received into said gap at a location vertically above said lower bearing of said axle carrier; wherein the dual bearing is arranged between the upper and lower bearing when vertically viewed.
2. The wheel suspension system according to claim 1 , wherein one of the forked arms of the forked McPherson strut support has two opposing, spaced jaws, between which the first end of the control arm is located, wherein a respective bearing eye is formed in the jaws, the first end of the control arm mounted via bearing bushes to at least one of two axle journals laterally projecting from an end of the control arm.
3. The wheel suspension system according to claim 2 , further comprising a stop plate situated between one of the two bearing eyes and the extension.
4. The wheel suspension system according to claim 3 , wherein the bearing bushes additionally exhibit radially outwardly pointing flanges that project out of the bearing eye, which are made to abut the stop plate and serve as a rubber buffer.
5. The wheel suspension system according to claim 4 , wherein the bearing bushes exhibit a high lateral stiffness and low stiffness perpendicular thereto.
6. The wheel suspension system according to claim 1 , wherein the upper bearing comprises a bearing ball.
7. The wheel suspension system according to claim 6 , wherein the steering axis is tilted to the back in the traveling direction.
8. The wheel suspension system according to claim 7 , wherein the steering axis is inwardly tilted and aligned parallel to the McPherson strut.