| 摘要 |
PURPOSE:To reduce the dimension of the whole constitution and stabilize the operation by installing a means for reducing the relative angle shift between the input and output shafts through a torsion bar according to the car-speed on the output-shaft side, in the control of hydraulic pressure according to said relative angle shift. CONSTITUTION:In a hydraulic power steering apparatus, an input shaft 1 connected to a steering wheel and a pinion 3 engaged with the rack 2 of the output shaft on the steering-wheel side are connected through a torsion bar 4. The supply of pressurized oil into the right and left cylinders 10 and 11 is controlled by the relative-angle shift between the valve body 6 of a rotary valve and the input shaft 1. In this case, the through holes 15. in the radial direction are formed at a part of the pinion 3, and a plunger 16 is fitted, and the spherical head part 16a is engaged with the V-groove 1a in the axial direction which is formed onto the input shaft 1. The plunger 16 is urged by the pressurized oil supplied from a subpump 23 integrally installed with a main pump 22 through a control valve 25 which is controlled according to the output of a car-speed sensor 26. |
