公开(公告)号：US20040256828A1

公开(公告)日：2004-12-23

申请号：US10748607

申请日：2003-12-30

Applicant: Donghee Industrial Co., Ltd.

Inventor： Sung-Wook Han ,  Soon-Hyun Park ,  Jong-Rae Lee ,  Keun-Jae Park

IPC: B60G021/05

CPC classification number: B60G21/051 ,  B60G2202/12 ,  B60G2202/136 ,  B60G2204/1244 ,  B60G2204/1246 ,  B60G2204/43 ,  B60G2206/20 ,  B60G2206/8103

Abstract: Disclosed herein are a torsion beam type suspension and a forming method of a torsion beam. In the torsion beam type suspension comprising a pair of left and right trailing arms connected to each other through a torsion beam, front ends of the trailing arms being used to mount a vehicle body by using joints, the torsion beam is obtained by forming an overall length of a pipe having a certain wall thickness by using a pressure forming process. In this case, end sections defined at both end portions of the torsion beam have a cross-sectional shape of a hollow oval, a center section defined at a center portion of the torsion beam has a cross-sectional shape of a hollow open loop, and middle sections defined between the center portion and both the end portions of the torsion beam have a cross-sectional shape of a hollow open loop. The loop of the middle sections defines an inner space larger than that defined by the loop of the center section. Further, since the torsion beam can be easily formed by adopting a hydro-forming process, it is possible to achieve high twisting rigidity, bending rigidity, and durability without requiring a torsion bar and reinforcement, which must be inevitably assembled to a conventional torsion beam axle, resulting in a reduction of the number of constitutive elements and the overall weight.

Abstract translation: 这里公开了扭力梁式悬架和扭转梁的形成方法。 在包括通过扭转梁彼此连接的一对左右拖臂的扭力梁型悬架中，后臂的前端用于通过使用接头来安装车体，扭转梁通过形成整体而获得 通过使用压力成形方法具有一定壁厚的管的长度。 在这种情况下，限定在扭转梁的两端部的端部具有中空椭圆形的横截面形状，限定在扭转梁的中心部分的中心部分具有中空开环的横截面形状， 并且限定在扭转梁的中心部分和两个端部之间的中间部分具有中空开环的横截面形状。 中间部分的环路限定了大于由中心部分的环路限定的内部空间。 此外，由于可以通过采用液压成型工艺容易地形成扭转梁，所以可以实现高扭转刚度，弯曲刚性和耐久性，而不需要扭矩杆和加强件，这必须不可避免地组装到常规的扭转梁 轴，导致构成元件的数量和总重量的减少。