| 摘要 |
A power steering device includes: a guide rod ( 1 ); a piston ( 3 ); a cylinder ( 2 ); a transmission mechanism ( 8, 9, 10 ) fixed to the cylinder ( 2 ), which transmits a steering force by moving integrally with the cylinder ( 2 ); a rack shaft ( 16 ) provided substantially parallel to the cylinder ( 2 ), which moves integrally with the cylinder ( 2 ); a pinion ( 18 ) provided on an input shaft ( 23 ) connected to a steering wheel, the pinion ( 18 ) engaging with a rack ( 25 ) of the rack shaft ( 16 ); and a valve mechanism ( 24 ) which causes one of the pressure chambers ( 4, 5 ) to communicate with a pressure source and another of the pressure chambers ( 4, 5 ) to communicate with a tank in accordance with a rotational load of the pinion ( 18 ) in relation to the rack ( 25 ).
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