Electrically operated power steering apparatus

Details Electrically operated power steering apparatus Electrically operated power steering apparatus

1996-11-06

1997-07-22

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to direction, inclination or angular position of...

318 14, 180444, 74388PS, B62D 504

Patent

active

056507011

ABSTRACT:
An electrically operated power steering apparatus has a housing, a pinion rotatably supported in the housing, the pinion being adapted to be connected to a steering shaft, a rack shaft axially movably disposed in the housing and held in mesh with the pinion, an electric motor disposed coaxially around the rack in the housing, and a ball-and-nut mechanism disposed on the rack shaft in the housing for transmitting a torque produced by the electric motor as an axial displacement to the rack shaft. The electric motor has a stator fixedly mounted in the housing and a rotor rotatably supported in the housing by a pair of bearings mounted on respective opposite ends of the rotor, the ball-and-nut mechanism being coupled to the rotor. A rack guide is disposed in the housing behind the pinion remotely from the ball-and-nut mechanism and held in sliding contact with the rack shaft. The rack shaft is axially slidably supported in the housing by the ball-and-nut mechanism and the rack guide.

REFERENCES:
patent: Re32222 (1986-08-01), Drutchas
patent: 4666014 (1987-05-01), Carlson et al.
patent: 4742882 (1988-05-01), Shimizu et al.
patent: 4773497 (1988-09-01), Carlson et al.
patent: 4800974 (1989-01-01), Wand et al.
patent: 5083626 (1992-01-01), Abe et al.

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