Motor vehicles – Steering gear – With electric power assist
Patent
1997-12-03
1999-11-02
Mai, Lanna
Motor vehicles
Steering gear
With electric power assist
310 89, B62D 504
Patent
active
059752343
ABSTRACT:
A steering assembly (10) for turning steerable wheels of a vehicle in response to rotation of a steering wheel (12) includes a pinion (30). A steering member (14) is movable axially to effect turning movement of the steerable wheels of the vehicle. The steering member (14) has a rack portion (34) for engagement with the pinion (30) and an externally threaded screw portion (38). A ball nut (140) extends around the screw portion (38) of the steering member (14) and has an internal thread (144). A plurality of balls (200) are disposed between the internal thread (144) on the ball nut (140) and an external thread (40) on the steering member (14) for transmitting force between the ball nut and the screw portion (38) of the steering member. An electric motor (50) includes a rotor (132) drivingly connected to the ball nut (140) and a stator (70). The stator (70) when energized effects rotation of the rotor (132) and, thereby, rotation of the ball nut (140). The steering assembly includes a one-piece molded plastic member (60) having a first axial portion (62) disposed adjacent to the pinion (30), a second axial portion (66) encapsulating and supporting the stator core (72) and the stator windings (82), and a third axial portion (110) supporting the ball nut (140) for rotation with the rotor (132).
REFERENCES:
patent: 3002261 (1961-10-01), Avila et al.
patent: 3400454 (1968-09-01), Balke et al.
patent: 4415054 (1983-11-01), Drutchas
patent: 4593781 (1986-06-01), Galtier
patent: 4598787 (1986-07-01), Drutchas
patent: 4660669 (1987-04-01), Shimizu
patent: 4660671 (1987-04-01), Behr et al.
patent: 4666014 (1987-05-01), Carlson et al.
patent: 4687976 (1987-08-01), Shimizu
patent: 4766970 (1988-08-01), Shimizu
patent: 4773497 (1988-09-01), Carlson et al.
patent: 4828062 (1989-05-01), Shimizu
patent: 5051693 (1991-09-01), Brauer
patent: 5083626 (1992-01-01), Abe et al.
patent: 5237231 (1993-08-01), Blaettner et al.
patent: 5299649 (1994-04-01), Sano et al.
patent: 5334897 (1994-08-01), Ineson et al.
patent: 5437349 (1995-08-01), Kurahashi et al.
patent: 5490319 (1996-02-01), Nakamura et al.
patent: 5555951 (1996-09-01), Sugino et al.
patent: 5711396 (1998-01-01), Joerg et al.
patent: 5852338 (1998-12-01), Boyd, Jr. et al.
Boyer Michael J.
Bugosh Mark J.
Fischer Andrew J.
Mai Lanna
TRW Inc.
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