Coupled torsion beam axle for vehicles

摘要

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.

主权项

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; 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, and 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; andend 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.