Subframe for a motor vehicle

Patent metadata

Field	Value
Publication number	US-9238394-B2
Application number	US-201414328195-A
Country	US
Kind code	B2
Filing date	Jul 10, 2014
Priority date	Jul 11, 2013
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A subframe for a motor vehicle for pivotally connecting wheel suspension elements and for supporting a stabilizer which extends in a transverse direction of the motor vehicle, said subframe includes lateral longitudinal members extending in a longitudinal direction of the motor vehicle and at least one cross member connecting the longitudinal members in a transverse direction of the vehicle, the at least one cross member being constructed as a hollow profile part having a hollow profile forming a stabilizer groove, the at least one cross member having a longitudinal through passage for a cardan shaft which is drivable by a rear axle differential carried by the subframe, the through passage being vertically offset relative to the stabilizer groove. The stabilizer connects the longitudinal members in the transverse direction of the motor vehicle, and extends at least in part in the stabilizer groove between the longitudinal members.

First claim

What is claimed is:

1. A subframe for a motor vehicle for pivotally connecting wheel suspension elements and for supporting a stabilizer which extends in a transverse direction of the motor vehicle, said subframe comprising:
lateral longitudinal members extending in a longitudinal direction of the motor vehicle; and
at least one cross member connecting the longitudinal members in a transverse direction of the vehicle, said at least one cross member being constructed as a hollow profile part having a hollow profile forming a stabilizer groove, said at least one cross member having a longitudinal through passage for a cardan shaft which is drivable by a rear axle differential carried by the subframe, said through passage being vertically offset relative to the stabilizer groove, wherein said stabilizer groove is constructed to receive the stabilizer at least over a portion of an extent of the stabilizer between the longitudinal members.

2. The subframe of claim 1 , wherein the stabilizer groove is constructed to receive the stabilizer over an entire extent of the stabilizer between the longitudinal members.

3. The subframe of claim 1 , further comprising a cover element, wherein the stabilizer groove has an open or closed cross section, and wherein the open cross section of the stabilizer groove is closable by the cover element.

4. The subframe of claim 3 , wherein the open cross section is a U-profile shaped cross section which is continuous in the transverse direction of the vehicle.

5. The subframe of claim 1 , wherein the stabilizer groove is open toward a top or a bottom in a vertical direction of the vehicle, or toward a front or a rear in the longitudinal direction of the vehicle.

6. The subframe of claim 1 , wherein the longitudinal members delimit the stabilizer groove in the transverse direction of the vehicle in a respective corner region of the subframe.

7. The subframe of claim 1 , further comprising stabilizer bearings arranged outside the stabilizer groove in the vehicle transverse direction, for rotatably supporting the stabilizer.

8. The subframe of claim 1 , wherein the subframe is a rear axle subframe and wherein the at least one cross member which is formed with the stabilizer groove is mounted as a front cross member in the rear axle subframe.

9. The subframe of claim 1 , wherein the longitudinal through passage for the cardan shaft is an indentation, which is formed in a top side of the at least one cross member.

10. An arrangement for a motor vehicle, comprising:
a subframe for a motor vehicle for pivotally connecting wheel suspension elements, said subframe comprising lateral longitudinal members extending in a longitudinal direction of the vehicle and at least one cross member connecting the longitudinal members in a transverse direction of the motor vehicle, said at least one cross member being constructed as a hollow profile part having a hollow profile forming a stabilizer groove, said at least one cross member having a longitudinal through passage for a cardan shaft which is drivable by a rear axle differential carried by the subframe, said through passage being vertically offset relative to the stabilizer groove; and
a stabilizer supported by the subframe and connecting the longitudinal members in the transverse direction of the motor vehicle, said stabilizer extending at least in part in the stabilizer groove between the longitudinal members.

11. The arrangement of claim 10 , wherein the stabilizer extends continuously in the stabilizer groove between the longitudinal members.

12. The arrangement of claim 10 , wherein the longitudinal members delimit the stabilizer groove in the transverse direction of the vehicle in a respective corner region of the subframe.

13. The arrangement of claim 12 , wherein the stabilizer has at least one side section which extends downwards with a vertical offset out of the stabilizer groove in the corner region of the subframe.

14. The arrangement of claim 13 , wherein the side section of the stabilizer passes underneath the longitudinal member in the transverse direction of the vehicle.

15. The arrangement of claim 10 , wherein the stabilizer extends contactless within the stabilizer groove of the at least one cross member.

16. The arrangement of claim 10 , further comprising an active chassis control, said active chassis control comprising the stabilizer and at least one rotary actuator operatively connected with the stabilizer for acting on the stabilizer with a torsion moment.

17. The arrangement of claim 16 , wherein the rotary actuator is constructed as electrically controllable rotary actuator.

18. The arrangement of claim 10 , wherein the rotary actuator is arranged at least partially in the stabilizer groove.

19. The arrangement of claim 18 , wherein the rotary actuator is arranged entirely in the stabilizer groove.

Assignees

• Audi Ag

Inventors

• Leibl Peter

Classifications

• B60G2200/184

  Assymetric arrangements · CPC title

• B60G21/005 Primary

  transversally · CPC title

• B60G2200/422

  Driving wheels or live axles · CPC title

• B60G2202/135

  Stabiliser bar and/or tube · CPC title

• B60G2204/15

  Mounting of subframes · CPC title