JPH03110283U

JPH03110283U -

Info

Publication number: JPH03110283U
Application number: JP1993590U
Authority: JP
Priority date: 1990-02-28
Filing date: 1990-02-28
Publication date: 1991-11-12

Description

[Brief explanation of drawings]

添付した第１図は本考案の実施例の断面図であ
る。１……ボデイ、２……流入室、３……流出室、
４……主弁口、６……ソレノイド、９……コア、
１０……プランジヤガイド、１０ａ……（プラン
ジヤガイド１０の）延長部、１２……プランジヤ
、１４……パイロツト弁体、１８……閉弁用圧縮
コイルばね、２０……主弁体、２３……パイロツ
ト弁室、２４……パイロツト弁孔。 The attached FIG. 1 is a sectional view of an embodiment of the present invention. 1...Body, 2...Inflow chamber, 3...Outflow chamber,
4... Main valve port, 6... Solenoid, 9... Core,
DESCRIPTION OF SYMBOLS 10...Plunger guide, 10a...Extension part (of the plunger guide 10), 12...Plunger, 14...Pilot valve body, 18...Compression coil spring for valve closing, 20...Main valve body, 23... Pilot valve chamber, 24...Pilot valve hole.

Claims

[Claims for Utility Model Registration] A body in which a main valve port for communicating an inflow chamber and an outflow chamber is opened and closed by moving a main valve body toward and away from the inflow chamber side, and a A pilot valve chamber is formed that is partitioned by a main valve body to allow a small flow rate to flow, and a valve-closing force due to the fluid pressure in the pilot valve chamber and a valve-opening force due to the fluid pressure in the inflow chamber are applied to the main valve body. A plunger guided by a cylindrical plunger guide of a solenoid attached to the body faces the pilot chamber so as to sandwich the main valve body between it and the main valve port, and usually When the plunger presses the main valve body under the bias of the valve-closing compression coil spring, a pilot valve hole that communicates the pilot valve chamber of the main valve body with the outflow chamber is connected to the pilot valve of the plunger. The main valve port is held in a closed state by being closed by the body, and the main valve port is closed by the main valve body, and the plunger is moved against the bias of the valve closing compression coil spring by the excitation of the solenoid. By moving toward the core side while separating from the main valve body, the pressure in the pilot valve chamber is reduced due to the fluid flowing out to the outflow chamber side as the pilot valve hole is opened, and the pressure in the pilot valve chamber is reduced. In the pilot type solenoid valve, the main valve body moves in a direction to open the main valve port due to a pressure difference generated between the inlet chamber and the valve, and the plunger guide is extended toward the body side. The main valve body is fitted into the extension portion and guided so as to move freely toward and away from the main valve port, and the pilot valve chamber is formed, and the valve-closing compression coil spring is connected to the plunger. and the core.