公开(公告)号：US5518265A

公开(公告)日：1996-05-21

申请号：US341373

申请日：1994-11-17

Applicant: Charles A. Buthala ,  Gary L. Wells

Inventor： Charles A. Buthala ,  Gary L. Wells

IPC: B60G21/05 ,  B60G11/18

CPC classification number: B60G21/051 ,  B60G2200/21 ,  B60G2200/22 ,  B60G2202/1362 ,  B60G2204/1246 ,  B60G2206/012 ,  B60G2206/014 ,  B60G2206/20 ,  B60G2206/203 ,  B60G2206/30

Abstract: A torsion-bar-free, unitary, twist beam axle having stress transition character capable of handling both vehicle suspension bending loads and torsion loads without a separate torsion bar, comprising a one-piece, integral twist beam elongated in the direction of its axis, and having a pair of legs elongated in the direction of the axis and extending transverse to the axle axis to outer distal ends, the legs each having an elongated portion looped back upon itself into elongated, peripherally closed loops at said outer distal ends to form a pair of closed loops spaced from and generally parallel to each other, the axle having a central portion, and a pair of mounting ends for attachment to vehicle trailing arms, and a pair of stress transition members extending respectively from the mounting ends toward the central portion and located substantially between the closed loops, these members having a pair of spaced walls connected by a bight and with sufficient resistance to flexing movement toward each other to limit movement by the loops toward each other and to limit loop movement in opposite axial directions along the axis, under torsional stress applied to the axle. The ends of these walls are shown to curve under the loops for weldment thereto. The stress transition members taper in height along their length, from the highest height at the inner ends thereof.

Abstract translation: 具有应力转变特征的无扭矩，单一的扭梁轴具有能够处理车辆悬架弯曲载荷和扭转载荷而没有单独的扭力杆，包括沿其轴线方向伸长的一体式整体扭转梁， 并且具有沿所述轴线方向延伸并且横向于所述轴线延伸到外部远端的一对腿部，所述腿部各自具有环形的部分，所述细长部分自身在所述外部远端处环绕成细长的，周向闭合的环，以形成 一对彼此间隔开并且大体上彼此平行的闭合回路，所述轴具有中心部分，以及一对用于附接到车辆后臂的安装端，以及一对应力过渡构件，其分别从安装端向中心部分延伸 并且基本上位于闭合环之间，这些构件具有通过弯曲连接并且具有足够的抗弯曲运动的一对隔开的壁 彼此相对地限制环路相对于彼此的运动，并且在施加到车轴的扭转应力下限制沿着轴线的相反轴向方向上的回路运动。 这些壁的端部显示为在其周围焊接的环之下弯曲。 应力过渡部件沿其长度从内端的最高高度逐渐变细。