JPS61129976U

JPS61129976U -

Info

Publication number: JPS61129976U
Application number: JP1304785U
Authority: JP
Priority date: 1985-01-31
Filing date: 1985-01-31
Publication date: 1986-08-14

Description

[Brief explanation of drawings]

第１図は本考案に係るパイロツト操作切換弁の
一実施例を示す断面図、第２図は第１図の―
線に沿う部分断面図、第３図は従来の電磁弁を示
す断面図である。符号の説明、１０……主弁、１２……スプール
（主弁体）、１３……ピストン、１３ａ……凹所
、２０……電磁パイロツト弁、２１……弁本体、
２１ｂ……弁孔、２１ｃ……第１弁座、２１ｅ…
…排出ポート、２１ｆ……弁孔、２１ｇ……第２
弁座、２２……電磁モータ、２２ｃ……プランジ
ヤ、２２ｄ……（第１）スプリング、２５，２６
……ピン（伝達部材）、２８……（第２）スプリ
ング、ａ……左室（第２室）、ｂ……右室（第１
室）。 FIG. 1 is a sectional view showing an embodiment of the pilot operated switching valve according to the present invention, and FIG.
FIG. 3 is a partial cross-sectional view taken along the line, and is a cross-sectional view showing a conventional electromagnetic valve. Explanation of symbols, 10... Main valve, 12... Spool (main valve body), 13... Piston, 13a... Recess, 20... Electromagnetic pilot valve, 21... Valve body,
21b... Valve hole, 21c... First valve seat, 21e...
...Discharge port, 21f...Valve hole, 21g...Second
Valve seat, 22...electromagnetic motor, 22c...plunger, 22d...(first) spring, 25, 26
...Pin (transmission member), 28... (second) spring, a... Left ventricle (second chamber), b... Right ventricle (first
room).

Claims

[Scope of utility model registration request]

A piston that is pushed toward the other side when fluid is supplied into the first chamber formed on one side, and a main valve body that is provided at the other end of the piston and is pushed by the piston to switch the fluid. and an electromagnetic pilot valve that is provided integrally with the main valve and supplies and discharges fluid into the first chamber, and the electromagnetic pilot valve is provided on one side of the piston and is provided on one side of the piston. a first valve seat having a valve hole communicating with the inflow port on one side, and a second valve seat provided on the other side coaxially with the piston and having a valve hole exposed to the first chamber and communicating with the discharge port. a valve body, and a second chamber provided on one side of the valve body that constantly communicates with the first chamber and exposes the first valve seat, and that is movable toward and away from the first valve seat. an electromagnetic motor including a plunger that is urged toward a first valve seat by a first spring and retracts from the first valve seat when energized; a first valve body that is fixed and seats on the first valve seat when the electromagnetic motor is not energized; and a first spring that is movable in the axial direction in a recess coaxially provided on one side of the piston. a second valve element biased toward the second valve seat by a second spring with a smaller elastic force; a second valve element that penetrates the valve body and engages with the plunger or the first valve element at one end; engages with the second valve body to transmit the movement of the first valve body to the second valve body when the first valve body is seated on the first valve seat; A pilot operated switching valve comprising a transmission member spaced apart from the second valve seat by a predetermined amount.