Lash adjustment assembly

Details Lash adjustment assembly Lash adjustment assembly

1997-12-10

1999-05-25

Jeffery, John A.

Machine element or mechanism

Gearing

Backlash take-up

74498, 74398, 74422, F16H 5518, B62D 312

Patent

active

059061332

ABSTRACT:
A vehicle steering apparatus (10) includes a first gear (16) which is rotatable about an axis (21), and a second gear (14) having gear teeth (18) in meshing engagement with gear teeth (20) on the first gear (16). The apparatus further comprises an adjustment mechanism (22) for moving the first gear (16) in one direction along the axis (21) to reduce clearance between the meshing gear teeth (18, 20). The adjustment mechanism (22) includes a first threaded member (64), a second threaded member (90) and a ratchet drive (98). The first threaded member (64) is movable along the axis (21) in the one direction to move the first gear (16) along the axis in that direction. The second threaded member (90) is screwed together with the first threaded member (64) such that rotation of the second threaded member (90) causes axial movement of the first threaded member (64). The ratchet drive (98) is interposed between the first gear (16) and the second threaded member (90), and rotates the second threaded member (90) selectively when lash between the meshing gear teeth (18, 20) provides the clearance.

REFERENCES:
patent: 3060762 (1962-10-01), Lutz
patent: 3186249 (1965-06-01), Lanzenberger
patent: 3884091 (1975-05-01), Hay
patent: 3942827 (1976-03-01), Warlop et al.
patent: 4180146 (1979-12-01), Airheart
patent: 4294159 (1981-10-01), Wendler et al.
patent: 5341701 (1994-08-01), Krom et al.

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