| 摘要 |
An assembly for turning steerable wheels of a vehicle upon manual rotation of a steering wheel (12) includes a steering member (14) which is axially movable to effect turning movement of the steerable vehicle wheels. A housing surrounds at least a portion of the steering member (14). A ball nut drive (38) located within the housing is drivingly connected to a thread portion (26) of the steering member (14). An electric assist motor (36) located within the housing is drivingly connected to the ball nut drive (38). A fluid or lubricant (68) is located within the housing and damps movement of the steering member (14).
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