JPH03102668U

JPH03102668U -

Info

Publication number: JPH03102668U
Application number: JP1115090U
Authority: JP
Priority date: 1990-02-07
Filing date: 1990-02-07
Publication date: 1991-10-25

Description

[Brief explanation of drawings]

第１図は、本考案実施例の電磁式切替弁１０の
断面図を示す。第２図は、従来技術の電磁式切替
弁の断面図を示す。１０……電磁式切替弁、１８……ソレノイド手
段、１９……ハウジング、２０……内部空間、２
１……可動鉄心、２２……バルブ手段、２３ａ…
…連通路、２５……ダイアフラム、２７……背圧
室、２８……第１シート、２９……第２シート、
３２……第１ポート、３３……第２ポート、３４
……第３ポート。 FIG. 1 shows a sectional view of an electromagnetic switching valve 10 according to an embodiment of the present invention. FIG. 2 shows a sectional view of a conventional electromagnetic switching valve. 10... Solenoid switching valve, 18... Solenoid means, 19... Housing, 20... Internal space, 2
1...Movable iron core, 22...Valve means, 23a...
...Communication path, 25...Diaphragm, 27...Back pressure chamber, 28...First seat, 29...Second seat,
32...First port, 33...Second port, 34
...Third port.

Claims

[Scope of utility model registration request]

a housing, a solenoid means integrally fixed to the housing, a movable iron core movable by the solenoid means, an internal space formed within the housing, and a first valve communicating the internal space with the outside. 1, second and third ports, and controls opening and closing of communication between the first port and the second port, and at the same time controls opening and closing of communication between the second port and the third port, and is integrated with the movable iron core. a valve means fixed to the valve means, first and second seats on which the valve means is seated, a diaphragm supporting the valve means, a back pressure chamber separated from the internal space by the diaphragm, and the valve a communication passage formed inside the means and communicating the first port and the back pressure chamber; a fluid pressure receiving area of the first port side of the valve means is approximately the same as a fluid pressure receiving area of the back pressure chamber; An electromagnetic switching valve characterized by: