Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1986-05-08
1987-05-19
Love, John J.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180 791, 384616, 744248R, B62D 308, F16H 104
Patent
active
046660143
ABSTRACT:
An improved mounting arrangement for a ball nut drive assembly for an electric assist steering system is disclosed. The steering system includes a housing surrounding at least a portion of a steering member having rack teeth thereon, a ball-nut drive assembly circumscribing a thread portion of the steering member for axially driving said steering member upon rotation of the ball-nut drive assembly, an electric assist motor for driving said ball-nut assembly into rotation in response to a control signal and an electronic control unit for providing said control signal in response to a measured amount of driver input torque. The steering member is radially supported relative to the housing at two spaced apart locations. The ball-nut drive assembly is axially spaced from the electric assist motor and connected thereto by a connection tube. Thrust bearings are located at each end of the ball-nut drive assembly and are operatively positioned between the ball-nut drive assembly and the housing. Each thrust bearing has an associated O-ring positioned between such thrust bearing and the housing. The thrust bearings and O-rings substantially restrain axial movement of the ball-nut drive assembly relative to the housing and enable radial movement of the ball-nut assembly relative to the housing.
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Carlson Robert E.
Clement Joseph S.
Love John J.
McGiehan Donn
TRW Inc.
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