Motor vehicles – Steering gear – With electric power assist
Patent
1998-03-09
1999-12-14
Swann, J. J.
Motor vehicles
Steering gear
With electric power assist
180446, 74498, 74571M, B62D 504
Patent
active
060004916
ABSTRACT:
An electric power steering apparatus includes a steering torque sensor assembled integrally with a steering device having a variable steering ratio. The steering device includes an input shaft eccentrically and rotatably mounted in a movable housing rotatably supported on a fixed housing, an output shaft rotatably mounted in the fixed housing in eccentric relation to the input shaft, a coupling relatively non-rotatably interconnecting the input and output shafts while allowing them to move relatively to one another in a perpendicular direction of axes of the input and output shafts, and a drive mechanism for rotating the movable housing relatively to the fixed housing to displace the input shaft relatively to an axis of the movable housing so that the eccentricity between the input and output shafts changes to vary the steering ratio of the steering device. The input shaft includes a first shaft connected to a steering wheel, a second shaft connected to the output shaft via the coupling, and a torsion bar connecting the first and second shafts while permitting relative torsional displacement between the first and second shafts. The steering torque sensor includes a slider engaged with the first and second shafts and axially displaceable in response to relative torsional displacement between the first and second shafts, and a coil attached to the movable housing for converting the amount of axial displacement of the slider into a corresponding electric signal.
REFERENCES:
patent: 5489004 (1996-02-01), Shimizu et al.
patent: 5650701 (1997-07-01), Shimizu et al.
patent: 5836419 (1998-11-01), Shimizu et al.
patent: 5906250 (1999-05-01), Haga et al.
patent: 5924519 (1999-07-01), Shimizu et al.
Kawai Toshitake
Shimizu Yasuo
Yuzuriha Jyunji
Honda Giken Kogyo Kabushiki Kaisha
Ririe Andrew J.
Swann J. J.
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