| 摘要 |
PURPOSE:To prevent hunting, reduce dimension, with the simple structure at a low cost. CONSTITUTION:A pressure control valve is equipped with a sleeve 35 arranged on the inner peripheral surface of a housing 13, inside space 14 formed in the sleeve 35, inflow passage 16 and an effluence passage 18 which are formed on the housing 13, snap ring 15 arranged on the inflow passage 16 side on the inner surface of the sleeve 35, and a spool valve 19 which divides the inside space 14 to the inflow passage 16 and a pressure chamber 17. Further, the pressure control valve is equipped with an effluence hole 38 which is formed on the sleeve 35 and allows the inflow passage 16 and the effluence passage 18 to communicate and cuts off the flow when the top end of the spool valve 19 makes contact with the snap ring 15, throttle flow passage 20 which is formed on the spool valve 19 and allows the inflow passage 16 and the pressure chamber 17 to communicate, return hole 21 for the communication between the pressure chamber 17 and the effluence passage 18, plunger 22 which is formed midway in the return hole 21 and cuts off the communication between the pressure chamber 17 and the effluence passage 18, and an electromagnet part 12 for driving the plunger 22. |
