Wheel suspension for the rear axle of a vehicle

Patent metadata

Field	Value
Publication number	US-9399378-B2
Application number	US-201314415466-A
Country	US
Kind code	B2
Filing date	Jul 11, 2013
Priority date	Jul 18, 2012
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A wheel suspension for the rear axle of a vehicle includes a wheel carrier that is steerable in a pivoting range for mounting a wheel, and a plurality of control arms for articulating the wheel carrier to the body of the vehicle, and further a damping device for damping a movement of the wheel carrier relative to the vehicle body. The damping device is connected to the wheel carrier by way of a wheel carrier connection, wherein the wheel carrier connection is arranged in an attachment area of the wheel space of the wheel defined by the pivoting range of the wheel carrier, which, of all areas of the wheel space facing the vehicle body, has the greatest direct distance to the vehicle body.

First claim

What is claimed is:

1. A wheel suspension for a rear axle of a vehicle, comprising:
a wheel carrier for affixing a wheel, with the wheel carrier together with the wheel being steerable in a pivoting range about a steering axis and being pivotable about a spring compression of the rear axle, with the pivoting range and the spring compression defining a wheel space of the wheel, which is taken up by the wheel during movements of the wheel between extreme positions in the pivoting range and the spring compression,
a plurality of control arms for articulating the wheel carrier on a vehicle body of the vehicle,
a damper device for damping movement of the wheel carrier relative to the vehicle body, said damper device being arranged on one of the control arms in an attachment region defined by a surface section of the wheel space that has a greatest direct distance from the vehicle body of all areas of the wheel space facing the vehicle body,
wherein the wheel space of the wheel defined by the pivoting range of the wheel carrier is formed symmetrical to a plane of symmetry aligned with the steering axis, wherein the wheel carrier connection of the damper device is disposed in the plane of symmetry, and
a spring device for springily affecting the movement of the wheel carrier relative to the vehicle body, said spring device being arranged separate from the damper device on said one of the control arms on a wheel-carrier-distal side of the damper device.

2. The wheel suspension of claim 1 , wherein said one of the control arms comprises a cup-shaped receptacle supporting the spring device.

3. The wheel suspension of claim 1 , wherein said one of the control arms comprises a curved portion which due to the curvature creates or increases an installation space for the damper device.

4. The wheel suspension of claim 1 , wherein the wheel carrier connection is arranged such that a ratio between a stroke of the wheel carrier during the relative movement of the wheel in relation to the vehicle body and a resulting stroke of the damper device is greater than 0.51.

5. The wheel suspension of claim 1 , further comprising a drive shaft driving the wheel carrier.

6. The wheel suspension of claim 1 , wherein a damper axis is inclined from a vertical direction of the vehicle and in relation to a direction of travel of the vehicle toward a rearward direction or toward the vehicle body, or both, with the damper device configured to dampen along the damper axis.

7. A rear axle of a vehicle, comprising:
a left wheel suspension and a right wheel suspension, wherein each of the left wheel suspension and the right wheel suspension is constructed to comprise
a wheel carrier for affixing a wheel, with the wheel carrier together with the wheel being steerable in a pivoting range about a steering axis and being pivotable about a spring compression of the rear axle, with the pivoting range and the spring compression defining a wheel space of the wheel, which is taken up by the wheel during movements of the wheel between extreme positions in the pivoting range and the spring compression,
a plurality of control arms for articulating the wheel carrier on a vehicle body of the vehicle,
a damper device for damping movement of the wheel carrier relative to the vehicle body, damper device being arranged on one of the control arms in an attachment region defined by a surface section of the wheel space that has a greatest direct distance from the vehicle body of all areas of the wheel space facing the vehicle body,
wherein the wheel space of the wheel defined by the pivoting range of the wheel carrier is formed symmetrical to a plane of symmetry aligned with the steering axis, wherein the wheel carrier connection of the damper device is disposed in the plane of symmetry, and
a spring device for springily affecting the movement of the wheel carrier relative to the vehicle body, said spring device being arranged separate from the damper device on said one of the control arms on a wheel-carrier-distal side of the damper device.

8. A method for positioning a on a control arm having a spring device for springily affecting the movement of a wheel carrier relative to the vehicle body, for establishing a connection to the wheel carrier of a wheel suspension having an attached wheel, said wheel carrier being steerable in a pivoting range formed symmetrical to a plane of symmetry aligned with a steering axis and being pivotable about a spring compression of the rear axle, the method comprising:
determining a wheel space of the wheel, with the wheel space being defined by the pivoting range of the wheel carrier about the steering axis and the spring compression of the rear axle,
determining an attachment region of surface sections of the wheel space, wherein the attachment region has a greatest direct distance from a vehicle body of all areas of the wheel space facing the vehicle body,
positioning the damper device on the control arm in the attachment region, and
arranging the spring device separate from the damper device on said control arm on a wheel-carrier-distal side of the damper device.

9. The method of claim 5 , wherein the wheel suspension comprises
a plurality of control arms for articulating the wheel carrier on the vehicle body, and
wherein the damper device dampens movement of the wheel carrier relative to the vehicle body.

Assignees

• Audi Ag

Inventors

• Goldberg Ruben
• Langhoff Hans-Jürgen
• Isliker Marco

Classifications

• B60G2200/18

  Multilink suspensions, e.g. elastokinematic arrangements · CPC title

• B60G2200/184

  Assymetric arrangements · CPC title

• B60G3/20 Primary

  all arms being rigid · CPC title

• B60G2200/422

  Driving wheels or live axles · CPC title

• B60G2200/44

  steerable · CPC title