| 摘要 |
PURPOSE:To reduce the pump load, by constructing a restricted route, through which fluid which has flowed into an inlet port, passes, as the opening area of the route is variable according to the flux of the fluid, in a flow control valve which is used in such as a power steering device. CONSTITUTION:A casing 21 is formed by making a receiving hole 21a whose left end is opened, and setting an inlet port 23a and a drain port 23b which open into the receiving hole 21a. A connector 22, at the left end of which an outlet port 23c is formed, is set in the receiving hole 21a. Then, a main spool 27 is inserted into the receiving hole 21a as it slided freely, a primary pressure room 28 and a secondary pressure room 29 are distinctively formed at both ends of the spool 27, respectively, and a restricted route formation member 26 which has a connecting hole 26a, is set in the left and the spool 27 in an integrated one body. Moreover, at the same time as a sub orifice formation member 37 is fixed in a hole 22a of the connector 22, a sub spool 36 which is equipped with shrunk springs 39 between itself and the sub orifice formation member 37, is inserted in the hole 22a, and the restricted route formation member 26 is fitted in the small diameter part 36c of the sub spool 36. |
