Power steering apparatus.

摘要

A power steering apparatus for an automobile or other vehicle has a motor 60 which rotates a steering shaft 20 through an electromagnetic clutch 70 and a worm gear reduction gear 50. When the clutch is engaged, the rotation of the motor causes the rotation of the steering shaft. When the clutch is disengaged, the steering shaft is not connected to either the reduction gear or the motor and can therefore be rotated manually with the same force as for a manual steering apparatus. The reduction gear and the electromagnetic clutch are coaxially disposed around the steering shaft.