| 摘要 |
A steering mechanism for use in an integrated brake and steering system. The steering mechanism has a driver gear connected to a rack mechanism by a pinion member. The driver gear is connected to a gear attached to a steering shaft by a linkage member. A carrier member attached to a rotary valve holds first and second sprocket wheels taut against the linkage member. A steering input signal applied to the steering shaft by an operator creates a steering torque in the linkage member. The steering torque causes the rotary valve to move and restrict the communication from a source of fluid to develop a pressure differential across the rack mechanism. This pressure differential moves the rack and provides the driver gear with an operational rotary torque. This operational rotary torque is transmitted by the linkage to the gear on the shaft to provide a power assist in the operation of the steering gear connected to the wheels of a vehicle. |
