| 摘要 |
PURPOSE:To make a power cylinder and an actuator controllable each, by installing plural orifices different in each characteristic, in a circumferential direction of a rotary valve of a power steering pressure fluid controller, while making them generate different fluid characteristics. CONSTITUTION:Hydraulic operating fluid being fed out of a first oil pump 17 enters inside a valve body 14 after passing through a first inlet port 16. Then, it enters a first chamber 25 of a power cylinder 24 from an orifice 51 by way of a port 22. Hydraulic fluid in a second chamber 26 is fed to a reservoir tank 21 from a port 23 by way of an orifice 52 and each of ports 47 and 49, and a power piston 27 is forcedly moved to some extent by dint of a pressure differential between first and second chambers 25 and 26. Likewise, an insulator housing 39 is forcedly moved by pressure oil out of a second oil pump 20. These individual hydraulic operating fluids are fed to the power cylinder 24 and a turning actuator each for use. |
