| 摘要 |
<p>A steering gear system includes a rack driven by a pinion. When the torque on the pinion reaches a predetermined level, the steering column to which the pinion is attached moves axially. The axial movement of the steering column brings a disc connected with it into electrical conductive contact with a fixed electric contact. This energizes an electric motor. Further axial movement of the steering column causes the disc to contact a friction clutch plate which is connected with a pulley driven by the electric motor. This results in frictional engagement between the disc and the friction clutch plate and a power assist from the electric motor to move the rack which is a function of the torque applied to the steering column.</p> |
