| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a steering device for a vehicle capable of continuously changing the ratio of the change amount of the articulate angle or steering angle of a wheel relative to the rotating amount of a steering wheel, and being configured with a simple structure. <P>SOLUTION: When a spool of a servo-type rotary valve 2 is rotated according to a rotary volume of a steering wheel 6, a flow rate of hydraulic oil supplied to a steering hydraulic cylinder 9 from a hydraulic pump 7 is measured by rotation of a variable capacity type hydraulic motor 3. The rotation of the variable capacity type hydraulic motor 3 is fedback to a servo-type rotary valve 2 via a decelerator 4 and a rotation transmission mechanism 5. When a flow rate corresponding to the rotary volume of the steering wheel 6 is reached, the servo-type rotary valve 2 is returned to a neutral position (II). The capacity of the variable capacity type hydraulic motor 3 is controlled based on a speed of the vehicle from a vehicle speed sensor 16, so as to control the flow rate of the hydraulic oil supplied to the steering hydraulic cylinder 9. <P>COPYRIGHT: (C)2008,JPO&INPIT |
