Motor vehicles – Steering gear – With fluid power assist
Patent
1995-12-12
1998-01-20
Hurley, Kevin
Motor vehicles
Steering gear
With fluid power assist
277188R, B62D 522
Patent
active
057092834
ABSTRACT:
A hydraulic rack and pinion power steering gear (10) and a method of assembling the steering gear (10) are provided comprising a rack (20) operatively associated with steerable vehicle wheels. The rack (20) is movable in opposite directions for turning the steerable wheels in opposite directions. A pinion (18) is in meshing engagement with the rack (20), and a housing (16) partially encloses the rack (20) and defines a fluid chamber (24). Sealing means (62, 70) is provided between the housing (16) and the rack (20), and a seal retainer (72) is provided for holding the sealing means (62, 70) in sealing position between the housing (16) and the rack (20). The seal retainer (22) comprises a first portion (74) for engaging and axially supporting the sealing means (62, 70) and encircling the rack (20), and a second portion (76) integral with the first portion (74) and which deflects radially inward as the seal retainer (72) is positioned in the housing (16). The second portion (76), upon axial movement into the housing (16), snaps radially outward into an internal recess (36) in the housing (16) to hold the seal retainer (72) and the sealing means (62, 70) in the housing (16). The second portion (76) of the seal retainer (72) comprises an annular plurality of deflectable tabs (90), the tabs (90) being cantilevered from the first portion (74) of the seal retainer (72). The apparatus further includes a removal tool (116) for removing the seal retainer (72) from the housing (16). The removal tool (116) has means (122) for deflecting the second portion (76) of the seal retainer (72) radially inward such that the second annular portion (76) disengages from the internal recess (36) in the housing (16).
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Hurley Kevin
TRW Inc.
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