| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power steering device which can alleviate a steering operation burden on an operator, which does not tire out the operator too much and which does not require high skill from the operator.SOLUTION: A power steering device includes: a stub shaft 10 rotated according to an operation of a steering wheel 1 by an operator; a worm shaft 60; and a torsion bar 11 rotationally coupling the stub shaft 10 and the worm shaft 60. The power steering device performs power assist of the steering of a vehicle by controlling hydraulic oil of predetermined pressure by a hydraulic control valve 80 based on relative positional deviation in a rotation direction occurring between the hydraulic control valve 80 and a sleeve 70 according to torsion of the torsion bar 11. The sleeve 70 and the worm shaft 60 are configured separately, so that the relative positional deviation in the rotation direction of the sleeve 70 with respect to the worm shaft 60 can be controlled.</p> |
