JPH0449280U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

添付図面は本考案の一実施例を示し、第１図は
閉弁状態をあらわす断面図、第２図は開弁作動時
にソレノイドの励磁によりプランジヤが上動した
状態をあらわす部分断面図、第３図は開弁状態を
あらわす部分断面図、第４図は閉弁作動時にパイ
ロツト弁体が弾性によつて上方へバウンドした状
態をあらわす部分断面図である。 １……ボデイ、２……流入室、３……流出室、
４……主弁口、６……ソレノイド、１０……パイ
ロツト弁体、１１……プランジヤ、１６……閉弁
用圧縮コイルばね、１８……主弁体、２３……パ
イロツト弁室、２４……パイロツト弁孔、２６…
…凸部、２７……（パイロツト弁孔と凸部との）
〓間。 The attached drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view showing the valve in the closed state, Fig. 2 is a partial sectional view showing the state in which the plunger is moved upward by the excitation of the solenoid during valve opening operation, and Fig. 3 The figure is a partial sectional view showing the valve in the open state, and FIG. 4 is a partial sectional view showing the state in which the pilot valve body bounces upward due to elasticity during the valve closing operation. 1...Body, 2...Inflow chamber, 3...Outflow chamber,
4...Main valve port, 6...Solenoid, 10...Pilot valve body, 11...Plunger, 16...Compression coil spring for valve closing, 18...Main valve body, 23...Pilot valve chamber, 24... ...Pilot valve hole, 26...
...Protrusion, 27... (between the pilot valve hole and the protrusion)
〓 between.

Claims (1)

【実用新案登録請求の範囲】 流出室側から流入室側に筒状に突出する主弁口
を形成してなるボデイに、前記流入室側からの接
離により前記主弁口を開閉し、かつ、前記流入室
とパイロツト弁室との間を小流量の流通可能に仕
切る主弁体を設けて、該主弁体に前記パイロツト
弁室内の流体圧による閉弁力と前記流入室内の流
体圧による開弁力とが作用するようにし、前記主
弁体に前記パイロツト弁室と前記流出室とを連通
させるパイロツト弁孔を形成し、前記ボデイに取
り付けたソレノイドのプランジヤに、前記パイロ
ツト弁室側から前記主弁体に接離することにより
前記パイロツト弁孔を開閉するパイロツト弁体を
形成し、前記ソレノイドの非励磁時には、閉弁用
圧縮コイルばねの付勢による前記プランジヤの前
記主弁体側への移動により、前記主弁体が前記パ
イロツト弁体により前記パイロツト弁孔を閉塞さ
れつつ前記主弁口を閉塞する閉弁状態に保持され
、前記ソレノイドの励磁時には、前記プランジヤ
の前記主弁体から離間する方向への移動により、
前記パイロツト弁孔の開放にともなう流体の流出
によつて前記パイロツト弁室が減圧して、該パイ
ロツト弁室と前記流入室との間に生じる圧力差に
より前記主弁体が前記主弁口を開放する方向に移
動して開弁されるようにしたパイロツト式電磁弁
において、 前記パイロツト弁体の前記主弁体への当接面に
、前記パイロツト弁孔内に僅かな〓間を空けて挿
入される凸部を、前記ソレノイドの励磁時に前記
主弁口に当接している前記主弁体に対して前記プ
ランジヤが大きく離間した状態においては前記パ
イロツト弁孔から抜脱する長さに形成したことを
特徴とするパイロツト式電磁弁。[Claims for Utility Model Registration] A body formed with a main valve port projecting in a cylindrical shape from an outflow chamber side to an inflow chamber side, the main valve port being opened and closed by approaching and separating from the inflow chamber side, and , a main valve body is provided that partitions the inflow chamber and the pilot valve chamber to allow a small flow of flow; A pilot valve hole is formed in the main valve body to communicate the pilot valve chamber and the outflow chamber, and a plunger of a solenoid attached to the body is provided with a valve opening force from the pilot valve chamber side. A pilot valve element is formed that opens and closes the pilot valve hole by coming into contact with and separating from the main valve element, and when the solenoid is not energized, the plunger is biased toward the main valve element by the biasing of the valve-closing compression coil spring. Due to the movement, the main valve body is held in a closed state in which the pilot valve hole is blocked by the pilot valve body and the main valve port is closed, and when the solenoid is energized, the main valve body is separated from the main valve body of the plunger. By moving in the direction of
The pressure in the pilot valve chamber is reduced due to the outflow of fluid accompanying the opening of the pilot valve hole, and the main valve body opens the main valve port due to the pressure difference generated between the pilot valve chamber and the inflow chamber. In the pilot type solenoid valve which is opened by moving in the direction of The convex portion is formed in such a length that it can be removed from the pilot valve hole when the plunger is far away from the main valve body that is in contact with the main valve port when the solenoid is energized. Features a pilot type solenoid valve.