公开(公告)号：US20060220339A1

公开(公告)日：2006-10-05

申请号：US11373268

申请日：2006-03-13

Applicant: Yuki Kusaka ,  Kazuo Harada

Inventor： Yuki Kusaka ,  Kazuo Harada

IPC: B60G21/05 ,  B60G11/20

CPC classification number: B60G21/051 ,  B60B35/02 ,  B60B2310/206 ,  B60B2310/302 ,  B60B2360/102 ,  B60B2360/1458 ,  B60B2900/311 ,  B60G2202/136 ,  B60G2204/124 ,  B60G2204/43 ,  B60G2206/014 ,  B60G2206/20

Abstract: Disclosed is a torsion beam type rear suspension which comprises a pair of right and left trailing arms (2), a torsion beam (3), and a spring seat (6) disposed in a corner region defined at a junction between each of the lateral ends of the torsion beam and a rear portion (2c) of a corresponding one of the trailing arms to form a mounting seat for a coil spring (8). A vertical flange (13) is formed along a laterally inner edge (12) of the spring seat to have a longitudinally front edge extending vertically along a rear side surface of the torsion beam. The spring seat has a first region (7b) of disposed opposed to the corresponding trailing arm and fixed thereto approximately in its entirety, and a second region (16) disposed opposed to the torsion beam and fixed thereto only through the vertical flange. The torsion beam type rear suspension of the present invention can improve the supporting rigidity of the spring seat relative to a coil spring without increasing the rigidities of the spring seat and trailing arm themselves, while allowing the risk of stress concentration occurring at an end of the torsion beam to be reduced, so as to achieve increased chassis rigidity and adequately maintain suspension functions.

Abstract translation: 公开了一种扭力梁式后悬架，其包括一对左右拖臂（2），扭力梁（3）和弹簧座（6），该弹簧座设置在限定在每个横向 扭转梁的端部和相应的一个后臂的后部（2c）形成用于螺旋弹簧（8）的安装座。 沿着弹簧座的横向内边缘（12）形成垂直凸缘（13），以具有沿扭转梁的后侧表面垂直延伸的纵向前边缘。 弹簧座具有与相应的拖臂相对设置并大致整体固定的第一区域（7b），以及与扭转梁相对设置并且仅通过垂直凸缘固定的第二区域（16）。 本发明的扭力梁型后悬架可以提高弹簧座相对于螺旋弹簧的支撑刚度，而不会增加弹簧座和拖臂自身的刚度，同时允许在端部处发生应力集中的风险 扭矩梁要减少，从而达到增加底盘刚度并充分保持悬挂功能。