JPH0531337Y2 - - Google Patents

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Publication number
JPH0531337Y2
JPH0531337Y2 JP9167390U JP9167390U JPH0531337Y2 JP H0531337 Y2 JPH0531337 Y2 JP H0531337Y2 JP 9167390 U JP9167390 U JP 9167390U JP 9167390 U JP9167390 U JP 9167390U JP H0531337 Y2 JPH0531337 Y2 JP H0531337Y2
Authority
JP
Japan
Prior art keywords
main valve
valve
pilot
pilot valve
valve body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP9167390U
Other languages
Japanese (ja)
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JPH0449280U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP9167390U priority Critical patent/JPH0531337Y2/ja
Publication of JPH0449280U publication Critical patent/JPH0449280U/ja
Application granted granted Critical
Publication of JPH0531337Y2 publication Critical patent/JPH0531337Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 産業上の利用分野 本考案は、閉弁後に低下する流出室側の圧力が
急激に変動するのを防止するようにしたパイロツ
ト式電磁弁に関する。
[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pilot type solenoid valve that prevents the pressure on the outflow chamber side from rapidly fluctuating, which decreases after the valve is closed.

従来の技術 パイロツト式電磁弁の1つとして、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、流入室側からの接離により主弁口を
開閉し、かつ、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、その
主弁体にパイロツト弁室内の流体圧による閉弁力
と流入室内の流体圧による開弁力とが作用するよ
うにし、主弁体にパイロツト弁室と流出室とを連
通させるパイロツト弁孔を形成し、ボデイに取り
付けたソレノイドのプランジヤに、パイロツト弁
室側から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た構
造になり、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プランジヤの主弁体側
への移動により、主弁体がパイロツト弁体により
パイロツト弁孔を閉塞されつつ主弁口を閉塞する
閉弁状態に保持され、ソレノイドの励磁時には、
プランジヤの主弁体から離間する方向への移動に
より、パイロツト弁孔の開放にともなう流体の流
出によつてパイロツト弁室が減圧して、そのパイ
ロツト弁室と流入室との間に生じる圧力差により
主弁体が主弁口を開放する方向に移動して開弁さ
れるようにしたものが用いられている。
Conventional technology As one type of pilot type solenoid valve, the main valve port is opened and closed by approaching and separating from the inflow chamber side, and has a body formed with a main valve port projecting in a cylindrical shape from the outflow chamber side to the inflow chamber side. In addition, a main valve body is provided that partitions the inflow chamber and the pilot valve chamber to allow a small flow of flow, and the main valve body has a valve closing force due to the fluid pressure in the pilot valve chamber and an opening force due to the fluid pressure in the inflow chamber. A pilot valve hole is formed in the main valve body to communicate the pilot valve chamber and the outflow chamber, and the plunger of the solenoid attached to the body is connected to and separated from the main valve body from the pilot valve chamber side. This creates a structure in which a pilot valve body opens and closes the pilot valve hole, and when the solenoid is not energized, the plunger moves toward the main valve body due to the bias of the valve-closing compression coil spring, so that the main valve body opens and closes the pilot valve hole. The pilot valve body closes the pilot valve hole and closes the main valve port, keeping the valve closed, and when the solenoid is energized,
As the plunger moves away from the main valve body, the pressure in the pilot valve chamber is reduced due to the outflow of fluid accompanying the opening of the pilot valve hole, and due to the pressure difference created between the pilot valve chamber and the inflow chamber. A valve is used in which the main valve body moves in the direction of opening the main valve port to open the valve.

考案が解決しようとする課題 このようなパイロツト式電磁弁は、シールを確
実に行うために主弁体とパイロツト弁体がゴム等
の弾性材料によつて形成されている。このため、
閉弁作動時には、これらの弁体の弾性変形により
パイロツト弁体が、主弁口を閉塞する状態にある
主弁体に対して離間しつつバウンドして、パイロ
ツト弁孔が開放されることがある。
Problems to be Solved by the Invention In such a pilot type solenoid valve, the main valve body and the pilot valve body are made of an elastic material such as rubber in order to ensure reliable sealing. For this reason,
When the valve is closed, the elastic deformation of these valve bodies causes the pilot valve body to bounce away from the main valve body, which is currently blocking the main valve port, and may open the pilot valve hole. .

ところで、パイロツト弁孔は、開弁作動時にパ
イロツト弁室内が速やかに減圧するようにするた
めに比較的大きい径で形成されている。
Incidentally, the pilot valve hole is formed to have a relatively large diameter in order to quickly reduce the pressure inside the pilot valve chamber when the valve is opened.

このため、パイロツト弁体のバウンドにともな
つてパイロツト弁室が減圧することにより主弁体
が主弁口を開放させる方向に移動し、パイロツト
式電磁弁が一旦開弁されて流入室側から流出室側
へ高圧の流体が流入し、徐々に低下していくべき
流出室側の圧力が途中で一時的に上昇することと
なる。
Therefore, as the pilot valve body bounces, the pressure in the pilot valve chamber decreases, causing the main valve body to move in the direction of opening the main valve port, and once the pilot type solenoid valve is opened, the air flows out from the inflow chamber side. High-pressure fluid flows into the chamber, and the pressure in the outflow chamber, which should have gradually decreased, temporarily increases during the flow.

このように、従来のパイロツト式電磁弁は、閉
弁直後の流出室側における圧力低下の仕方が安定
しないため、流出室側の圧力低下に対応して微妙
なタイミングで作動を行うような場合には使用す
ることができないという欠点があつた。
In this way, with conventional pilot-type solenoid valves, the way the pressure decreases on the outflow chamber side immediately after the valve closes is not stable, so it is difficult to operate at delicate timing in response to the pressure drop on the outflow chamber side. The disadvantage was that it could not be used.

課題を解決するための手段 本考案は、上記課題を解決するための手段とし
て、パイロツト弁体の主弁体への当接面に、パイ
ロツト弁孔内に僅かな隙間を空けて挿入される凸
部を、ソレノイドの励磁時に主弁口に当接してい
る主弁体からプランジヤが大きく離間した状態に
おいてはパイロツト弁孔に対して抜脱する長さに
形成した構成とした。
Means for Solving the Problems As a means for solving the above problems, the present invention provides a protrusion that is inserted into the pilot valve hole with a slight gap on the abutting surface of the pilot valve body against the main valve body. The portion is formed in such a length that it can be removed from the pilot valve hole when the plunger is largely separated from the main valve body that is in contact with the main valve port when the solenoid is energized.

考案の作用及び効果 本考案は上記構成になり、ソレノイドが励磁さ
れない閉弁状態においては、凸部がパイロツト弁
孔内に挿入されている。開弁作動時において、ソ
レノイドの励磁によりパイロツト弁体が主弁体か
ら大きく離間すると、凸部がパイロツト弁孔から
抜脱することによつてパイロツト弁孔が開放さ
れ、パイロツト弁室内に流体が速やかに流出して
パイロツト弁室内が減圧し、これにより、主弁体
が速やかに主弁口を開放させる方向に移動し、応
答性に優れた開弁動作が行われる。
Functions and Effects of the Invention The present invention has the above-mentioned configuration, and in the closed state in which the solenoid is not energized, the convex portion is inserted into the pilot valve hole. During valve opening operation, when the pilot valve body separates greatly from the main valve body due to the energization of the solenoid, the convex portion withdraws from the pilot valve hole, opening the pilot valve hole, and fluid quickly flows into the pilot valve chamber. The air flows out to reduce the pressure in the pilot valve chamber, and as a result, the main valve element quickly moves in the direction of opening the main valve port, and a valve opening operation with excellent responsiveness is performed.

また、閉弁作動時に、パイロツト弁体が、主弁
口を閉塞する状態にある主弁体に対して離間する
ようにバウンドした場合には、パイロツト弁体が
バウンドする間、パイロツト弁体に形成した凸部
が主弁体のパイロツト弁孔内に挿入されたままで
あつて、パイロツト弁室と流出室とはパイロツト
弁孔と凸部との僅かな隙間を介して連通するだけ
である。したがつて、パイロツト弁室からパイロ
ツト弁孔を通つて流出室側に流出する流体の量は
極く僅かであり、パイロツト弁室内は殆ど減圧さ
れず、流入室との間に圧力差は生じない。このた
め、主弁体は主弁口を開放する方向に移動するこ
となく閉弁状態に保持されたままとなり、流出室
側の圧力は、従来のように大きく変動することな
く、徐々に低下していく。
In addition, if the pilot valve body bounces away from the main valve body that is in the state of closing the main valve port during valve closing operation, a The convex portion remains inserted into the pilot valve hole of the main valve body, and the pilot valve chamber and the outflow chamber communicate only through a small gap between the pilot valve hole and the convex portion. Therefore, the amount of fluid flowing out from the pilot valve chamber through the pilot valve hole to the outflow chamber side is extremely small, the pressure inside the pilot valve chamber is hardly reduced, and no pressure difference occurs between the pilot valve chamber and the inflow chamber. . Therefore, the main valve body remains closed without moving in the direction of opening the main valve port, and the pressure on the outflow chamber side gradually decreases instead of fluctuating significantly like in the past. To go.

このように、本考案のパイロツト式電磁弁は、
閉弁動作後の流出室側の圧力低下の仕方が安定し
ているから、流出室側の圧力低下に対応して微妙
はタイミングで作動を行うような場合にも用いる
ことができる効果がある。
In this way, the pilot type solenoid valve of the present invention is
Since the manner in which the pressure decreases on the outflow chamber side after the valve closing operation is stable, it can be used even in cases where the operation is performed at delicate timing in response to the pressure drop on the outflow chamber side.

実施例 以下、本考案の一実施例を添付図面に基づいて
説明する。
Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

ボデイ1内には、その一側の外面に開口する流
入室2と他側の外面に開口する流出室3とを互い
に連通させる主弁口4が、流出室3側から流入室
2側へ上向きに円筒形状に突き出すことによつて
形成されている。ボデイ1の上面には、その主弁
口4に対応する開口部に螺着した環形のスタフイ
ング5を介することにより、コイル7を主弁口4
と略同軸上に位置させてなるソレノイド6が取り
付けられている。コイル7及びスタフイング5の
中心孔内に嵌着した円筒形のプランジヤガイド8
の中空内には、磁性材料からなる筒体9の下端部
にゴム製のパイロツト弁体10を嵌着してなるプ
ランジヤ11が、緊密に、かつ、パイロツト弁体
10の連通孔12内に流体を流通させつつ上下方
向に自由に摺動するように嵌装されている。この
プランジヤ11のパイロツト弁体10の上端面と
コア13の下端面に固着したストツパ14の鍔1
5との間には、プランジヤ11に下方への移動力
を付与するための閉弁用圧縮コイルばね16が装
着されている。
Inside the body 1, there is a main valve port 4 that communicates with each other an inflow chamber 2 that opens on the outer surface of one side and an outflow chamber 3 that opens on the outer surface of the other side. It is formed by protruding into a cylindrical shape. The coil 7 is connected to the main valve port 4 by interposing an annular stuffing 5 screwed onto the upper surface of the body 1 to the opening corresponding to the main valve port 4.
A solenoid 6 is installed substantially coaxially with the solenoid 6. A cylindrical plunger guide 8 fitted into the center hole of the coil 7 and stuffing 5
Inside the hollow, a plunger 11 is formed by fitting a pilot valve body 10 made of rubber into the lower end of a cylinder 9 made of a magnetic material. It is fitted so that it can freely slide vertically while allowing the flow of water. The collar 1 of the stopper 14 is fixed to the upper end surface of the pilot valve body 10 and the lower end surface of the core 13 of this plunger 11.
A valve-closing compression coil spring 16 is installed between the plunger 11 and the plunger 5 to apply a downward moving force to the plunger 11.

プランジヤガイド8の中空内には、ゴム製の芯
体19の外周に筒体20を嵌着してなる主弁体1
8が、筒体20の外周面とプランジヤガイド8の
内周面との間に所定の僅かなクリアランス21を
確保しつつプランジヤ11と主弁口4との間にお
いて上下動し得るように装着されており、この主
弁体18が上下動してそのゴム製の芯体19を主
弁座22に接離させることにより主弁口4が開閉
されるようになつている。
Inside the hollow of the plunger guide 8, a main valve body 1 is formed by fitting a cylindrical body 20 around the outer periphery of a core body 19 made of rubber.
8 is mounted so as to be able to move up and down between the plunger 11 and the main valve port 4 while securing a predetermined slight clearance 21 between the outer peripheral surface of the cylinder 20 and the inner peripheral surface of the plunger guide 8. The main valve port 4 is opened and closed by moving the main valve body 18 up and down to bring the rubber core 19 into contact with and away from the main valve seat 22.

この主弁体18の上端面と前記プランジヤ11
の下端面との間には、容積の小さいパイロツト弁
室23が、主弁体18とプランジヤガイド8との
間の前記クリアランス21によつて流体が僅かの
流量で流通し得るように流入室2と連通した状態
で形成されており、主弁体18の上面と下面に
は、夫々、パイロツト弁室23内の流体圧による
閉弁方向の移動力と流入室2内の流体圧による開
弁方向の移動力が作用するようになつている。
The upper end surface of this main valve body 18 and the plunger 11
A pilot valve chamber 23 having a small volume is provided between the inflow chamber 2 and the lower end surface so that fluid can flow at a small flow rate due to the clearance 21 between the main valve body 18 and the plunger guide 8. The upper and lower surfaces of the main valve body 18 have a moving force in the valve closing direction caused by the fluid pressure in the pilot valve chamber 23 and a moving force in the valve opening direction caused by the fluid pressure in the inflow chamber 2, respectively. The moving force of

主弁体18には、主弁口4を閉塞する状態にお
いてパイロツト弁室23と流出室2とを連通する
パイロツト弁孔24が芯体19の上下両端面に開
口させて形成されている。このパイロツト弁孔2
4のパイロツト弁室23に開口する孔縁は、上方
に突出するパイロツト弁座25となつていて、こ
のパイロツト弁座25にパイロツト弁体10の下
端面が接離することにより、パイロツト弁孔24
が開閉されるようになつている。
A pilot valve hole 24 is formed in the main valve body 18 and opens at both upper and lower end surfaces of the core body 19, which communicates the pilot valve chamber 23 and the outflow chamber 2 when the main valve port 4 is closed. This pilot valve hole 2
The edge of the hole opening into the pilot valve chamber 23 of No. 4 serves as a pilot valve seat 25 that projects upward, and when the lower end surface of the pilot valve body 10 comes into contact with and separates from this pilot valve seat 25, the pilot valve hole 24
is now open and closed.

一方、パイロツト弁体10の下端面には、外形
寸法がパイロツト弁孔24の内径寸法よりも少し
小さい凸部26が、パイロツト弁孔24内に僅か
な隙間27を空けて挿入し得るように形成されて
いる。この凸部26の突出長さは、第2図に示す
ように主弁体18が主弁口4を閉塞するとともに
パイロツト弁体10がストツパ14に当接して両
者が最も離間した状態において、凸部26がパイ
ロツト弁孔24から抜脱してパイロツト弁孔24
のパイロツト弁室23への開口が大きく開放され
るような寸法となつている。
On the other hand, a convex portion 26 whose outer dimension is slightly smaller than the inner diameter of the pilot valve hole 24 is formed on the lower end surface of the pilot valve body 10 so that it can be inserted into the pilot valve hole 24 with a slight gap 27. has been done. The protruding length of the convex portion 26 is determined when the convex portion 26 is in a state where the main valve body 18 closes the main valve port 4 and the pilot valve body 10 is in contact with the stopper 14 and the two are the most distant from each other, as shown in FIG. The part 26 is pulled out from the pilot valve hole 24 and the pilot valve hole 24 is removed.
The opening to the pilot valve chamber 23 is dimensioned to be wide open.

本実施例は上記構成になり、第1図に示す閉弁
状態から開弁する際には、ソレノイド6を励磁し
てプランジヤ11に閉弁用圧縮コイルばね16の
付勢に抗する上動力を作用させると、まず、主弁
体18が主弁口4を閉塞したままの状態で、プラ
ンジヤ11がその凸部26をパイロツト弁孔24
から抜脱させつつストツパ14に当接するまで上
方に移動することにより、第2図に示すように、
パイロツト弁孔24が開放されてパイロツト弁室
23と流出室3とが連通する。そして、クリアラ
ンス21を介すことによつて流入室2と同じ高い
圧力となつているパイロツト弁室23内の流体が
パイロツト弁孔24を通つて低圧の流出室3へ速
やかに流出することによりパイロツト弁室23内
の圧力が低下し、パイロツト弁室23と流入室2
との間に生じた圧力差により、第3図に示すよう
に、主弁体18が主弁座22から離間するように
上方へ移動し、主弁口4が開放されて流入室2側
から流出室3側へ流体が流通する。
The present embodiment has the above-mentioned configuration, and when opening the valve from the closed state shown in FIG. When actuated, the plunger 11 first pushes the convex portion 26 into the pilot valve hole 24 while the main valve body 18 remains blocking the main valve port 4.
As shown in FIG. 2, as shown in FIG.
The pilot valve hole 24 is opened and the pilot valve chamber 23 and the outflow chamber 3 communicate with each other. The fluid in the pilot valve chamber 23, which is at the same high pressure as the inflow chamber 2 through the clearance 21, quickly flows out through the pilot valve hole 24 to the low-pressure outflow chamber 3. The pressure inside the valve chamber 23 decreases, causing the pilot valve chamber 23 and the inflow chamber 2 to
As shown in FIG. 3, the pressure difference generated between the Fluid flows toward the outflow chamber 3 side.

かかる開弁状態から閉弁する際には、ソレノイ
ド6の励磁を解除すると、閉弁用圧縮コイルばね
16の弾拡力によつて下方へ移動したプランジヤ
11が主弁体18を下方へ押圧することにより、
第1図に示すように、主弁体18は主弁座22に
当接して主弁口4を閉塞するとともに、パイロツ
ト弁体10がその凸部26をパイロツト弁孔24
内に挿入させつつパイロツト弁座25に当接して
パイロツト弁孔24を閉塞し、流入室2から流出
室3への流体の流通が阻止される。
When closing the valve from the open state, when the solenoid 6 is de-energized, the plunger 11, which is moved downward by the elastic expansion force of the valve-closing compression coil spring 16, presses the main valve body 18 downward. By this,
As shown in FIG. 1, the main valve body 18 comes into contact with the main valve seat 22 and closes the main valve port 4, and the pilot valve body 10 pushes its protrusion 26 into the pilot valve hole 24.
While being inserted into the valve, the pilot valve seat 25 is brought into contact with the pilot valve hole 24, thereby blocking the flow of fluid from the inflow chamber 2 to the outflow chamber 3.

閉弁作動時において、ゴム材料からなる主弁体
18の芯体19及びパイロツト弁体10が主弁座
22及びパイロツト弁座25への衝突によつて弾
性変形を生じ、その弾性復元力によつてパイロツ
ト弁体10が上方へバウンドすることがある。し
かしながら、パイロツト弁体10がバウンドする
間、パイロツト弁体10の凸部26は、第4図に
示すように、パイロツト弁孔24内に挿入された
ままであつて、パイロツト弁室23と流出室3と
は、凸部26とパイロツト弁孔24との間の極く
僅かな隙間27だけで連通することとなる。この
ため、パイロツト弁室23内の流体がパイロツト
弁孔24を通つて流出室3へ流出することは殆ど
なく、パイロツト弁室23内は減圧されずに流入
室2内とほぼ同じ高い圧力に保たれるために、主
弁体18は主弁口4を閉塞する位置に保持される
のであつて、一旦主弁口4が閉塞された後は流入
室2から流出室3へ流体が流出するのが阻止され
る。したがつて、閉弁動作後における流出室3内
の圧力は、大きく変動することなく徐々に低下し
ていく。
When the valve is closed, the core 19 of the main valve body 18 and the pilot valve body 10 made of rubber material collide with the main valve seat 22 and the pilot valve seat 25, causing elastic deformation, and the elastic restoring force causes deformation. As a result, the pilot valve body 10 may bounce upward. However, while the pilot valve body 10 bounces, the convex portion 26 of the pilot valve body 10 remains inserted into the pilot valve hole 24, as shown in FIG. This means that the convex portion 26 and the pilot valve hole 24 communicate with each other through only a very small gap 27. Therefore, the fluid in the pilot valve chamber 23 hardly flows out to the outflow chamber 3 through the pilot valve hole 24, and the pressure inside the pilot valve chamber 23 is maintained at almost the same high pressure as the inside of the inflow chamber 2 without being depressurized. Therefore, the main valve body 18 is held in a position where it closes the main valve port 4, and once the main valve port 4 is closed, fluid does not flow out from the inflow chamber 2 to the outflow chamber 3. is prevented. Therefore, the pressure in the outflow chamber 3 after the valve closing operation gradually decreases without changing significantly.

【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)
隙間。
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)
gap.

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な仕
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隙間を空けて
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 to partition the inflow chamber and the pilot valve chamber so that a small flow of flow can flow therebetween, and the main valve body is provided with a valve closing force due to the fluid pressure in the pilot valve chamber and a valve closing force due to the fluid pressure in the inflow chamber. 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 closed 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. As the main valve body moves in the direction of In the pilot type solenoid valve, which is opened by moving in the direction of opening the main valve port, a small amount of the pilot valve hole is formed on the abutting surface of the pilot valve body to the main valve body. The protrusion that is inserted with a gap has a length that allows it to 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. A pilot type solenoid valve that is characterized by a
JP9167390U 1990-08-31 1990-08-31 Expired - Lifetime JPH0531337Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9167390U JPH0531337Y2 (en) 1990-08-31 1990-08-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9167390U JPH0531337Y2 (en) 1990-08-31 1990-08-31

Publications (2)

Publication Number Publication Date
JPH0449280U JPH0449280U (en) 1992-04-27
JPH0531337Y2 true JPH0531337Y2 (en) 1993-08-11

Family

ID=31827519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9167390U Expired - Lifetime JPH0531337Y2 (en) 1990-08-31 1990-08-31

Country Status (1)

Country Link
JP (1) JPH0531337Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4633489B2 (en) * 2005-02-02 2011-02-16 株式会社Inax Lightly operated faucet

Also Published As

Publication number Publication date
JPH0449280U (en) 1992-04-27

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