US 8,006,989 B2Granted

Wheel suspension for a motor vehicle

AssigneesThyssenKrupp Bilstein Suspension GmbH, ThyssenKrupp Presta München/Esslingen GmbH

InventorsAlfred Preukschat, Thomas Brendecke, Luitpold Miller, Siegfried Ellmann

Life of this patent

Estimating the term…

Loading patent…

Abstract

A wheel suspension for a motor vehicle has a transverse control arm that can be attached to a vehicle body by way of bearings and can be rotated about a longitudinal axis, and a body spring configured as a torsion bar spring for absorbing rotational movements of the transverse control arm about the longitudinal axis. The body spring is disposed on the transverse control arm so as to rotate with it, with a first end. An electromechanical actuator for changing the angle of rotation of the body spring is disposed at a second end of the body spring. The wheel suspension has a damping element. The second end of the body spring is connected with a stress relief spring that is configured as a torsion bar spring, disposed coaxially with the body spring, and can be attached to the vehicle body.

Claims10

Dependent claims

A wheel suspension for a motor vehicle comprising:

(a) a transverse control arm rotatable about a longitudinal axis and attachable via bearings to a vehicle body;
(b) a body spring comprising a first torsion bar spring for absorbing rotational movements of the transverse control arm about the longitudinal axis, said body spring comprising first and second ends and being disposed on the transverse control arm so as to rotate at an angle of rotation with the transverse control arm;
(c) an electromechanical actuator for changing the angle of rotation of the body spring disposed on the second end of the body spring;
(d) a damping element;
and
(e) a stress relief spring comprising a second torsion bar spring connected with the second end of the body spring, said stress relief spring being disposed coaxially with the body spring and attachable to the vehicle body.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/002,626Filed 18 Dec 2007
Priority: DE 10 2006 061 98521 Dec 2006
Published: US 2008/0157448 A13 Jul 2008
Granted: 30 Aug 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B60G 11/181
Having torsion-bar springs only: arranged in a plane parallel to the longitudinal axis of the vehicle
B60G 11/20
Having torsion-bar springs only: characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
B60G 17/025
Spring characteristics , e.g. mechanical springs and mechanical adjusting means: the mechanical spring being a torsion spring
B60G 2200/14
Independent suspensions: with lateral arms