Control arm and method for producing a control arm

Patent metadata

Field	Value
Publication number	US-10625550-B2
Application number	US-201816050690-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Jul 31, 2017
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A control arm and a method of manufacturing thereof is disclosed. The control arm is made of an aluminum extrusion profile with a first end section, a second end section, and a middle section, which connects the first and second end sections. The control arm includes a base, two side walls, which are angled substantially perpendicular therefrom and which are spaced apart from one another on the longitudinal side, with a height H, and flanges, which are angled substantially perpendicular from the side walls at their free end. The first end section includes a first connecting region, the second end section includes a second connecting region, and the middle section includes at least one third connecting region.

First claim

The invention claimed is:

1. A control arm made of an aluminum extrusion profile, comprising:
a first end section,
a second end section,
a middle section, wherein the middle section connects the first and second end sections,
a base, and two side walls spaced apart from one another in a longitudinal direction and extending substantially perpendicular from the base, with a height H, and flanges, which are angled substantially perpendicular from the side walls at their free end,
wherein the first end section further comprises a first connecting region, the second end section further comprises a second connecting region, and the middle section further comprises at least one third connecting region,
wherein the side walls in the first connecting region and in the at least one third connecting region have the same distance A; and the side walls in the second connecting region have a comparatively larger distance B.

2. The control arm according to claim 1 , wherein the side walls in the first, second, and third connecting regions are shifted locally to the inside by an amount M.

3. The control arm according to claim 2 , wherein the amount M of the local displacement in the at least one third connecting region is smaller than the amount M of the local displacement in the first or second connecting region.

4. The control arm according to claim 1 , wherein the base in the second end section comprises a recess extending in the longitudinal direction of the control arm.

5. The control arm according to claim 4 , wherein in the second end section the ratio of the distance B of the side wall to a length C of the recess ranges from 0.2 to 0.8.

6. The control arm according to claim 5 , wherein the aluminum extrusion profile has wall thicknesses that vary over its cross section.

7. The control arm according to claim 6 , wherein the side walls extend parallel at a constant distance in the first end section and in the middle section.

8. The control arm, according to claim 7 , wherein in the second end section the middle section is followed by a transition section, and wherein the distance A of the side wall increases uniformly to a distance B.

9. The control arm according to claim 8 , wherein in the second end section after the transition section, the side walls extend parallel at a constant distance B.

10. The control arm according to claim 9 , wherein the first, second, and third connecting regions each comprises a connecting device.

11. The control arm according to claim 10 , wherein the side walls at the connecting devices are shifted to the inside.

12. The control arm according to claim 11 , wherein the connecting devices are formed at the same distance D from the base.

13. The control arm according to claim 12 , wherein the ratio of the distance E of the connecting devices of the first and third connecting region to a distance F of the connecting devices of the first and second connecting region ranges from 0.5 to 0.1.

14. The control arm according to claim 13 , further comprising an arch, arranged between a side wall and a flange, and wherein the arch is provided with a bevel at least in certain regions.

Assignees

• Benteler Automobiltechnik Gmbh

Inventors

• Paulsen Frode
• Voigt Dirk
• Boeing Guido
• Meyer Stephan

Classifications

• B23P15/00

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title

• B21D53/88

  other parts for vehicles, e.g. cowlings, mudguards · CPC title

• B60G2206/8105

  by extrusion · CPC title

• B23P2700/14

  Suspension elements of automobile vehicles · CPC title

• B60G2206/10

  Constructional features of arms · CPC title