Coupled torsion beam axle for vehicles

Patent metadata

Field	Value
Publication number	US-2016325596-A1
Application number	US-201514948300-A
Country	US
Kind code	A1
Filing date	Nov 21, 2015
Priority date	May 6, 2015
Publication date	Nov 10, 2016
Grant date	—

Abstract

A coupled torsion beam axle for vehicles may include a torsion beam disposed in a vehicle width direction and trailing arms disposed at both ends of the torsion beam in a length direction of a vehicle body, wherein the torsion beam has an opened cross section formed in a reverse “U” shape by press-forming one sheet member machined so that lengths of right and left sides are different from each other on the basis of a center, and cross section widths which are different from each other along vehicle width directions of both sides on the basis of the center between the trailing arms of both sides, and front and rear surfaces formed in a wave shape along the vehicle width directions of both sides on the basis of the center.

First claim

What is claimed is:

1 . A coupled torsion beam axle for a vehicle including a torsion beam disposed in a vehicle width direction and trailing arms disposed at both ends of the torsion beam in a length direction of a vehicle body, wherein the torsion beam has:
an opened cross section formed in a reverse “U” shape by press-forming one sheet member machined so that lengths of right and left sides are different from each other on a basis of a center thereof; and cross section widths which are different from each other along vehicle width directions of both sides on the basis of the center between the trailing arms of both sides, and front and rear surfaces formed in a wave shape along the vehicle width directions of both sides on the basis of the center.

2 . The coupled torsion beam axle for the vehicle of claim 1 , wherein the torsion beam includes:
a center part having a bent surface formed to be bent in a diagonal direction so that both sides of an upper end are symmetrical to each other at the center, and lower ends of both sides of the bent surface which are formed to be extended in a lower side direction; side parts extended in both sides on the basis of the center part, having a cross section width which is increased as compared to a width of the center part, having both sides of an upper portion formed to be extended in a lower side, and a width of a lower portion which is increased as compared to that of the center part; and end parts extended in both sides on the basis of the side parts, having a cross section width which is decreased as compared to a width of the side parts, having both sides of an upper portion formed to be extended in a lower side, and a width of a lower portion which is decreased as compared to a width of the side parts.

3 . The coupled torsion beam axle for the vehicle of claim 2 , wherein the lower portion of the side parts is formed to be longer than a lower portion of the center part.

4 . The coupled torsion beam axle for the vehicle of claim 2 , wherein the lower portion of the end parts is formed to be shorter than the lower portion of the side parts.

5 . The coupled torsion beam axle for the vehicle of claim 3 , wherein a lower end of the side parts is provided with a flange of which both ends are formed to be bent.

6 . The coupled torsion beam axle for the vehicle of claim 4 , wherein a lower end of the end parts is provided with a flange of which both ends are formed to be bent.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Dong Hee Industrial Co Ltd
• Hwashin Co Ltd

Inventors

• Kim Sang Rak
• Lim Jung Taek
• Lee Soo Chul
• Kim Hak Ii
• Kang Min Seok
• Jeong Eui Keun

Classifications

• B60G9/02 Primary

  the axle or housing being pivotally mounted on the vehicle {, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle (B60G9/003 takes precedence)} · CPC title

• B60G2206/8102

  by stamping · CPC title

• B60G21/051 Primary

  Trailing arm twist beam axles · CPC title

• B60G2200/23

  Trailing arms connected by a U-shaped torsion bar · CPC title

• B60G2206/20

  Constructional features of semi-rigid axles, e.g. twist beam type axles · CPC title