公开(公告)号：US20020162412A1

公开(公告)日：2002-11-07

申请号：US09846898

申请日：2001-05-01

Applicant: TRW Inc.

Inventor： Dennis F. Harer ,  William E. Allen JR.

IPC: F16H001/04

CPC classification number: B62D3/123 ,  F16H55/283 ,  Y10T74/1967

Abstract: A rack and pinion steering gear (10) comprises a housing (12) having an longitudinally extending passage (14). A yoke bore (22) extends perpendicular to the longitudinally extending passage (14) and connects with the longitudinally extending passage (14) within the housing (12). A pinion gear (20) is rotatably mounted in the housing (12). A rack bar (16) extends through the longitudinally extending passage (14) of the housing (12) and is movable relative to the pinion gear (20). The rack bar (16) has teeth in meshing engagement with the teeth (34) of the pinion gear (20). A yoke assembly (36) is located in the yoke bore (22) for at least partially supporting and guiding movement of the rack bar (16) relative to the pinion gear (20). The yoke assembly (36) includes a yoke (38), a yoke plug (42), and an elastomeric spring (40). The yoke (38) is axially spaced from the yoke plug (42) by the elastomeric spring (40). The elastomeric spring (40) is secured to the yoke (38) and to the yoke plug (42) so that the yoke (38), the elastomeric spring (40), and the yoke plug (42) form a unitized assembly.

Abstract translation: 齿条和小齿轮转向齿轮（10）包括具有纵向延伸的通道（14）的壳体（12）。 轭孔（22）垂直于纵向延伸的通道（14）延伸并且与壳体（12）内的纵向延伸的通道（14）连接。 小齿轮（20）可旋转地安装在壳体（12）中。 齿条（16）延伸穿过壳体（12）的纵向延伸的通道（14）并且可相对于小齿轮（20）移动。 齿条（16）具有与小齿轮（20）的齿（34）啮合的齿。 轭架组件（36）位于轭孔（22）中，用于至少部分地支撑和引导齿杆（16）相对于小齿轮（20）的运动。 轭组件（36）包括轭（38），轭塞（42）和弹性弹簧（40）。 轭（38）通过弹性弹簧（40）与轭塞（42）轴向间隔开。 弹性弹簧（40）固定到轭（38）和轭塞（42）上，使得轭（38），弹性弹簧（40）和轭塞（42）形成一个组合的组件。

公开(公告)号：US20030057010A1

公开(公告)日：2003-03-27

申请号：US10109348

申请日：2002-03-27

Applicant: TRW Inc.

Inventor： Dennis F. Harer ,  Mark A. Skelton

IPC: B62D005/22

CPC classification number: F16J3/042 ,  B62D5/22

Abstract: A fluid power assisted rack and pinion steering apparatus (10) for a vehicle includes a rack (40) connectable with steerable wheels of the vehicle, a housing (20) partially enclosing the rack (40) and defining a fluid chamber (39), a bushing (390 or 590) encircling the rack (40), a sleeve (420 or 620) supporting the rack (40) for sliding movement relative to the bushing (390 or 590), and a fluid tight seal member (370 or 570) for sealing the fluid chamber (39). The bushing (390 or 590) has opposite axial ends (391, 412 or 591, 612) and is secured in the housing (20) by an interference fit between an outer surface 394 or 594) of the bushing (390 or 590) and an inner surface (26) of the housing (20). The sleeve (420 or 620) extends between the bushing (390 or 590) and the rack (40). The sleeve (420 or 620) has at least one radially extending tab (431 or 631) received in a corresponding recess (418 or 618) in the bushing (390 or 590). The tab (431 or 631) provides a locating surface (441 or 641) for positioning the sleeve (420 or 620) relative to the bushing (390 or 590). The seal member (370 or 570) is located adjacent a recessed surface (394 or 594) of the bushing (390 or 590).

公开(公告)号：US20030052468A1

公开(公告)日：2003-03-20

申请号：US09956406

申请日：2001-09-19

Applicant: TRW Inc.

Inventor： Dennis F. Harer

IPC: B62D003/12

CPC classification number: B62D5/22 ,  B62D3/12

Abstract: A rack and pinion steering apparatus (10) comprises a housing (12). Helical teeth (60) of a pinion gear (54) meshingly engage teeth of a rack bar (42) and, during rotation of the pinion gear (54), result in an axial force. A shaft (86) connects with the pinion gear (54). Rotation of the shaft (86) effects rotation of the pinion gear (54). An assembly is interposed between the shaft (86) and the housing (12). The assembly comprises a first snap ring (142) that is attached to the shaft (86) and a second snap ring (144) that is attached to the housing (12). Interposed between the first and second snap rings (142 and 144) are only a fluid tight seal (146) for blocking fluid leakage from the housing (12) and a bushing (108) for enabling rotation of the shaft (86) relative to the housing (12) and for engaging the first snap ring (142) to block axial displacement of the pinion gear (54) due to the axial force acting on the pinion gear (54).

Abstract translation: 齿条齿条转向装置（10）包括壳体（12）。 小齿轮（54）的螺旋齿（60）啮合地啮合齿条（42）的齿，并且在小齿轮（54）旋转期间产生轴向力。 轴（86）与小齿轮（54）连接。 轴（86）的旋转实现小齿轮（54）的旋转。 组件插入在轴（86）和壳体（12）之间。 组件包括附接到轴（86）的第一卡环（142）和附接到壳体（12）的第二卡环（144）。 介于第一和第二卡环（142和144）之间的仅是用于阻挡液体从壳体（12）泄漏的流体密封（146）和用于使轴（86）相对于壳体 壳体（12）并且用于接合第一卡环（142）以阻挡小齿轮（54）由于作用在小齿轮（54）上的轴向力的轴向位移。