JPH0326879U

JPH0326879U -

Info

Publication number: JPH0326879U
Application number: JP8695089U
Authority: JP
Priority date: 1989-07-25
Filing date: 1989-07-25
Publication date: 1991-03-19

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すものであり、第
１図は閉弁時の全体縦断面図であつて第２図の
−線に対応する断面図、第２図は第１図の−
線断面図、第３図は開弁時の第１図に対応した
縦断面図である。４……電磁式制御弁、８……入口ポート、９…
…出口ポート、１０……弁ハウジング、１１……
主弁体、１２……パイロツト弁、２５……背圧室
、２７……パイロツト弁孔、２８……パイロツト
弁体、３１……ロツド部、３２……ガイド部、３
３……通路、３３ａ……入口ポート側開口部、３
４……絞り、４３……ソレノイド、Ｒ……リザー
バ。 The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of the entire valve when the valve is closed, and is a cross-sectional view corresponding to the - line in FIG. 2, and FIG.
The line sectional view and FIG. 3 are longitudinal sectional views corresponding to FIG. 1 when the valve is open. 4...Solenoid control valve, 8...Inlet port, 9...
...Outlet port, 10... Valve housing, 11...
Main valve body, 12...Pilot valve, 25...Back pressure chamber, 27...Pilot valve hole, 28...Pilot valve body, 31...Rod part, 32...Guide part, 3
3... Passage, 33a... Inlet port side opening, 3
4...Aperture, 43...Solenoid, R...Reservoir.

Claims

[Scope of utility model registration request]

The valve housing in which an inlet port and an outlet port are provided has a main valve body that can switch communication and isolation between both ports, and a main valve body that faces the inlet port in order to apply fluid pressure in the inlet port in the valve opening direction. A back pressure chamber that is slidably fitted while being spring-biased in the valve-closing direction, and is formed with the back side of the main valve body facing in order to exert fluid pressure that biases the main valve body in the valve-closing direction. and a pilot valve hole provided in the valve housing and communicating with the back pressure chamber, and a pilot valve hole movably disposed within the valve housing to open and close the pilot valve hole in response to energization and demagnetization of the solenoid. In the electromagnetic control valve, a pilot valve is provided with a pilot valve body, and a throttle is interposed between the inlet port and the back pressure chamber. At the same time, a rod part that fluidly and movably penetrates the main valve body is provided integrally and coaxially, and a guide part is provided at the inlet port to guide the rod part, and is in constant communication with the back pressure chamber. An electromagnetic control valve characterized in that an opening on the inlet port side of a passage bored in the rod portion and the guide portion cooperate to form a throttle that is closed when the pilot valve element is opened.