JP7017498B2 - solenoid valve - Google Patents

solenoid valve Download PDF

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Publication number
JP7017498B2
JP7017498B2 JP2018197767A JP2018197767A JP7017498B2 JP 7017498 B2 JP7017498 B2 JP 7017498B2 JP 2018197767 A JP2018197767 A JP 2018197767A JP 2018197767 A JP2018197767 A JP 2018197767A JP 7017498 B2 JP7017498 B2 JP 7017498B2
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valve
plunger
valve body
port
suction element
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JP2020063834A (en
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宏光 木村
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Saginomiya Seisakusho Inc
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Saginomiya Seisakusho Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/28—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with resilient valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0668—Sliding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube

Description

本発明は、弁体で弁ポートを開閉するとともに弁室が形成された弁ハウジングの弁室と電磁駆動部の間をダイヤフラムで封止するようにした電磁弁に関する。 The present invention relates to a solenoid valve in which a valve body opens and closes a valve port and a diaphragm seals between the valve chamber and the electromagnetic drive portion of the valve housing in which the valve chamber is formed.

従来、この種の電磁弁として、例えば特開平７－２６００３４号公報（特許文献１）に開示されたものがある。この従来の電磁弁は、弁ハウジングの弁室内にダイヤフラム弁を配置するとともに、弁室に開口する圧力流体の入力ポートＰ（一次側ポート）を、ダイヤフラム弁をこの入力ポートＰの軸線方向に移動させることにより、開閉するよう構成されている。 Conventionally, as a solenoid valve of this type, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 7-26034 (Patent Document 1). In this conventional solenoid valve, a diaphragm valve is arranged in the valve chamber of the valve housing, and the input port P (primary side port) of the pressure fluid that opens in the valve chamber is moved in the axial direction of the input port P. It is configured to open and close by letting it open and close.

図７は上記同様な従来の電磁弁の一例を示す図である。この電磁弁は、弁ハウジング８と電磁駆動部９を備えている。弁ハウジング８には、弁室８１と、弁室内の弁座８２の中央から流体が導入される第１ポート８３と、弁室８１に連通する第２ポート８４とが形成されている。電磁駆動部９においては、プランジャケース９１の端部に吸引子９２が固着されるとともに、プランジャケース９１内に吸引子９２に対向するプランジャ９３を配設している。また、吸引子９２とプランジャ９３との間にはプランジャばね９４が配設されている。そして、プランジャ９３の下端に弁体としてのダイヤフラム９５が取り付けられ、このダイヤフラム９５により、弁ハウジング８の弁室８１と電磁駆動部９の間を封止している。また、吸引子９２はプランジャ９３に対してダイヤフラム９５とは反対側に配置されている。なお、この例ではダイヤフラム９５が弁体を兼ねている。 FIG. 7 is a diagram showing an example of the same conventional solenoid valve as described above. This solenoid valve includes a valve housing 8 and a solenoid drive unit 9. The valve housing 8 is formed with a valve chamber 81, a first port 83 into which a fluid is introduced from the center of the valve seat 82 in the valve chamber, and a second port 84 communicating with the valve chamber 81. In the electromagnetic drive unit 9, the attractor 92 is fixed to the end of the plunger case 91, and the plunger 93 facing the attractor 92 is arranged in the plunger case 91. Further, a plunger spring 94 is arranged between the suction element 92 and the plunger 93. A diaphragm 95 as a valve body is attached to the lower end of the plunger 93, and the diaphragm 95 seals between the valve chamber 81 of the valve housing 8 and the electromagnetic drive unit 9. Further, the suction element 92 is arranged on the side opposite to the diaphragm 95 with respect to the plunger 93. In this example, the diaphragm 95 also serves as a valve body.

以上の電磁弁は、電磁駆動部９が非通電のときは、図７のように、プランジャばね９４のばね力によりプランジャ９３が吸引子９２から離間し、弁体としてのダイヤフラム９５が弁座８２に着座する。これにより、第１ポート８３が閉じられて弁閉状態となる。また、電磁駆動部９への通電により、プランジャ９３が吸引子９２に吸引され、図７の拡大図に示すように、ダイヤフラム９５が弁座８２から離間して第１ポート８３が開かれ弁閉状態となる。 In the above solenoid valve, when the electromagnetic drive unit 9 is not energized, as shown in FIG. 7, the plunger 93 is separated from the suction element 92 by the spring force of the plunger spring 94, and the diaphragm 95 as a valve body is the valve seat 82. Sit in. As a result, the first port 83 is closed and the valve is closed. Further, when the electromagnetic drive unit 9 is energized, the plunger 93 is attracted to the suction element 92, and as shown in the enlarged view of FIG. 7, the diaphragm 95 is separated from the valve seat 82, the first port 83 is opened, and the valve is closed. It becomes a state.

ここで、弁室８１に直接連通する第２ポート８４側から流体を導入するように構成すると、弁閉状態のときダイヤフラム９５に高圧が加わる。これにより流体の圧力による力がダイヤフラム９５を弁座８２から離間させる方向に作用し、弁漏れの虞が生じる。これに対して、上記のように第１ポート８３側から流体を導入するように構成した場合には、高圧を受ける受圧面積は第１ポート８３の内径に相当する小さな面積であり、ダイヤフラム９５を弁座８２から離間させる力が小さく、弁漏れの虞がない。 Here, if the fluid is introduced from the second port 84 side that directly communicates with the valve chamber 81, a high pressure is applied to the diaphragm 95 when the valve is closed. As a result, the force due to the pressure of the fluid acts in the direction of separating the diaphragm 95 from the valve seat 82 , which causes a risk of valve leakage. On the other hand, when the fluid is introduced from the first port 83 side as described above, the pressure receiving area that receives the high pressure is a small area corresponding to the inner diameter of the first port 83, and the diaphragm 95 is provided. The force for separating from the valve seat 82 is small, and there is no risk of valve leakage.

特開平７－２６００３４号公報Japanese Unexamined Patent Publication No. 7-26034

前記従来の電磁弁は、弁体としてのダイヤフラム９５が弁座８２に対向配置され、弁開時にはダイヤフラム９５がリフトして弁座８２から離間するように構成されている。このため、図７の拡大図に示すように、弁開状態のとき、第１ポート８３（一次側ポート）から弁室８１へ流入する流体がダイヤフラム９５に衝突するため流体の流れが阻害される阻害流が生じる。そのため、十分な流量を確保するのが困難となる。 In the conventional solenoid valve, the diaphragm 95 as a valve body is arranged to face the valve seat 82, and the diaphragm 95 is lifted and separated from the valve seat 82 when the valve is opened. Therefore, as shown in the enlarged view of FIG. 7, when the valve is open, the fluid flowing from the first port 83 (primary side port) into the valve chamber 81 collides with the diaphragm 95, and the fluid flow is obstructed. Inhibition flow occurs. Therefore, it becomes difficult to secure a sufficient flow rate.

本発明は、ダイヤフラムにより弁室と電磁駆動部の間を封止するようにした電磁弁において、弁閉時の弁漏れを防止するとともに、弁開時に一次側ポートから弁室に流入し、そして弁室から二次側ポートへ流出する際の阻害流を回避して十分な流量を確保することを課題とする。 The present invention is a solenoid valve in which the space between the valve chamber and the electromagnetic drive portion is sealed by a diaphragm, in which valve leakage is prevented when the valve is closed, and the valve flows into the valve chamber from the primary port when the valve is opened. The problem is to secure a sufficient flow rate by avoiding the obstructive flow when flowing out from the valve chamber to the secondary port.

請求項１の電磁弁は、弁体を収容する弁室が形成された弁ハウジングと、プランジャケース内で吸引子に対向して配置されたプランジャを該プランジャケースの軸線方向に移動させて前記弁体を駆動する電磁駆動部と、前記弁ハウジングの前記弁室と前記電磁駆動部の間を封止するダイヤフラムと、を備えた電磁弁において、前記弁ハウジングに、前記弁室に連通して流体が導入される一次側ポートと、前記弁室の側部に設けられて前記軸線と平行に配置された弁座面にて前記弁室に開口する一つの二次側ポートと、が形成され、前記電磁駆動部は、前記吸引子が前記プランジャよりも前記ダイヤフラム側に配置されるとともに、該吸引子と前記プランジャとの間に該プランジャを該吸引子から離間する方向に付勢するプランジャばねを備え、前記吸引子の挿通孔に挿通されて、前記プランジャと前記弁体とを連結する連結部をさらに有し、前記プランジャの移動により前記弁体が前記弁座面上を摺動して、該弁体により前記二次側ポートを開閉するよう構成され、前記プランジャばねにより前記プランジャが前記吸引子から所定位置まで離間して前記弁体が前記二次側ポートを閉状態とするとき、前記プランジャの前記所定位置からさらに吸引子から離間する方向への移動を規制するストッパ手段を備え、前記電磁駆動部にて前記プランジャが前記吸引子側に吸引された位置で、前記弁体が前記二次側ポートを開状態とすることを特徴とする。 The electromagnetic valve according to claim 1 is the valve in which a valve housing in which a valve chamber for accommodating a valve body is formed and a plunger arranged in a plunger case facing an aspirator are moved in the axial direction of the plunger case. In an electromagnetic valve provided with an electromagnetic drive unit that drives a body and a diaphragm that seals between the valve chamber and the electromagnetic drive unit of the valve housing, the valve housing communicates with the valve chamber and a fluid is used. A primary side port into which the valve chamber is introduced and a secondary side port provided on the side portion of the valve chamber and opened in the valve chamber on a valve seat surface arranged in parallel with the axis line are formed. The electromagnetic drive unit has a plunger spring in which the aspirator is arranged on the diaphragm side of the plunger and the plunger is urged between the aspirator and the plunger in a direction away from the aspirator. Further, the plunger is inserted into the insertion hole of the suction element to further have a connecting portion for connecting the plunger and the valve body, and the valve body slides on the valve seat surface due to the movement of the plunger. When the plunger is configured to open and close the secondary port by the valve body, and the plunger is separated from the suction element to a predetermined position by the plunger spring and the valve body closes the secondary port. The valve body is provided with a stopper means for restricting the movement of the plunger in a direction further away from the aspirator from the predetermined position, and the valve body is at a position where the plunger is attracted to the aspirator side by the electromagnetic drive unit. It is characterized in that the secondary side port is opened.

請求項１の電磁弁によれば、弁体を弁座面上で摺動移動させることで弁開状態となるようにしているので、弁開状態では、弁体は二次側ポートへの流路を阻害しない位置にある。これにより、一次側ポートから弁室へ流入した流体が二次側ポートへ流出しやすくなり、十分な流量を確保することができる。 According to the solenoid valve of claim 1, since the valve body is slid and moved on the valve seat surface to be in the valve open state, the valve body flows to the secondary side port in the valve open state. It is in a position that does not block the road. As a result, the fluid that has flowed into the valve chamber from the primary side port tends to flow out to the secondary side port, and a sufficient flow rate can be secured.

さらに、請求項１の電磁弁によれば、プランジャと吸引子との間隔を所定の間隔に確実に維持することができる。 Further, according to the solenoid valve of claim 1 , the distance between the plunger and the attractor can be surely maintained at a predetermined distance.

本発明の第１実施形態の電磁弁の非通電時の縦断面図である。It is a vertical sectional view at the time of de-energization of the solenoid valve of 1st Embodiment of this invention. 第１実施形態の電磁弁の通電時の縦断面図である。It is a vertical sectional view at the time of energization of the solenoid valve of 1st Embodiment. 図２（通電時）のＡ矢視拡大図である。FIG. 2 is an enlarged view of arrow A in FIG. 2 (when energized). 第１実施形態の変形例の電磁弁の非通電時の縦断面図である。It is a vertical sectional view at the time of de-energization of the solenoid valve of the modification of 1st Embodiment. 本発明の第２実施形態の電磁弁の非通電時の縦断面図である。It is a vertical sectional view at the time of de-energization of the solenoid valve of the 2nd Embodiment of this invention. 第２実施形態の電磁弁の通電時の縦断面図である。It is a vertical sectional view at the time of energization of the solenoid valve of 2nd Embodiment. 従来の電磁弁の一例を示す縦断面図である。It is a vertical sectional view which shows an example of the conventional solenoid valve.

次に、本発明の電磁弁の実施形態について図面を参照して説明する。図１は第１実施形態の電磁弁の非通電時（弁閉状態）の縦断面図、図２は第１実施形態の電磁弁の通電時（弁開状態）の縦断面図、図３は図２のＡ矢視拡大図である。なお、以下の説明における「上下」の概念は図面における上下に対応する。この実施形態の電磁弁は、弁ハウジング１と、電磁駆動部２と、連結部３と、ダイヤフラム４と、弁体５とを備えている。 Next, an embodiment of the solenoid valve of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of the solenoid valve of the first embodiment when it is not energized (valve closed state), FIG. 2 is a vertical cross-sectional view of the solenoid valve of the first embodiment when it is energized (valve open state), and FIG. FIG. 2 is an enlarged view taken along the line A in FIG. The concept of "upper and lower" in the following description corresponds to upper and lower in the drawing. The solenoid valve of this embodiment includes a valve housing 1, an electromagnetic drive unit 2, a connecting unit 3, a diaphragm 4, and a valve body 5.

弁ハウジング１は、本体部１Ａと弁座部材１Ｂとで構成されており、本体部１Ａの電磁駆動部２側の上端面には薄型円環状の段部１ａが形成され、この段部１ａの中央から下部に向けて軸線Ｘを中心線とする縦長円筒状の弁室１０が形成されている。なお、この軸線Ｘは後述のプランジャケース２１の中心線でもある。また、本体部１Ａは下部に突出する管部１Ａ１を有しており、この管部１Ａ１を通して弁室１０に連通し、流体が導入される軸線Ｘと同軸に開口する一次側ポート１１が形成されている。また、弁室１０の側部には弁室１０に開口する円柱形状の弁座嵌合孔１ｂが形成されている。そして、弁座嵌合孔１ｂ内に弁座部材１Ｂが嵌合されている。 The valve housing 1 is composed of a main body portion 1A and a valve seat member 1B, and a thin annular step portion 1a is formed on the upper end surface of the main body portion 1A on the electromagnetic drive portion 2 side, and the step portion 1a of the main body portion 1A is formed. A vertically long cylindrical valve chamber 10 having an axis X as a center line is formed from the center to the lower part. The axis X is also the center line of the plunger case 21, which will be described later. Further, the main body portion 1A has a pipe portion 1A1 protruding downward, and a primary side port 11 that communicates with the valve chamber 10 through the pipe portion 1A1 and opens coaxially with the axis X into which the fluid is introduced is formed. ing. Further, a cylindrical valve seat fitting hole 1b that opens into the valve chamber 10 is formed on the side portion of the valve chamber 10. Then, the valve seat member 1B is fitted in the valve seat fitting hole 1b.

弁座部材１Ｂは、弁座嵌合孔１ｂに整合する円柱形状の円柱部１Ｂ１と、円柱部１Ｂ１から突出する管部１Ｂ２と、円柱部１Ｂ１の外周部に形成されたフランジ部１Ｂ３とを有して構成されている。円柱部１Ｂ１の弁室１０側の端面は、後述の弁体５が摺動する平坦な弁座面１２ａとなっており、この弁座面１２ａから管部１Ｂ２内にかけて流体が流出する二次側ポート１２が形成されている。これにより、弁座面１２ａは軸線Ｘと平行に配置され、二次側ポート１２は、この弁座面１２ａにて弁室１０に開口している。なお、弁座部材１Ｂと本体部１Ａとの間はフランジ部１Ｂ３の内側で円柱部１Ｂ１の外周に配設されたＯリング１３により封止されている。 The valve seat member 1B has a cylindrical cylindrical portion 1B1 that matches the valve seat fitting hole 1b, a pipe portion 1B2 that protrudes from the cylindrical portion 1B1, and a flange portion 1B3 formed on the outer peripheral portion of the cylindrical portion 1B1. It is composed of. The end surface of the columnar portion 1B1 on the valve chamber 10 side is a flat valve seat surface 12a on which the valve body 5 described later slides, and the secondary side from which the fluid flows out from the valve seat surface 12a into the pipe portion 1B2. The port 12 is formed. As a result, the valve seat surface 12a is arranged parallel to the axis X, and the secondary port 12 is open to the valve chamber 10 at the valve seat surface 12a. The valve seat member 1B and the main body portion 1A are sealed by an O-ring 13 arranged inside the flange portion 1B3 and on the outer periphery of the cylindrical portion 1B1.

電磁駆動部２は、非磁性体からなるプランジャケース２１と、プランジャケース２１の下端に固定された磁性体からなる吸引子２２と、プランジャケース２１内で吸引子２２に対向して配置されたプランジャ２３と、吸引子２２とプランジャ２３との間に配設されたプランジャばね２４とを備えている。また、吸引子２２の下端に固着された固定用スリーブ２５と、プランジャケース２１の外周に配置されボビン２６ａに巻線が巻回された電磁コイル２６と、電磁コイル２６とボビン２６ａを内包する外函２７と、外函２７の下部から吸引子２２までの磁路を確保する継鉄２８とを備えている。 The electromagnetic drive unit 2 includes a plunger case 21 made of a non-magnetic material, an attractor 22 made of a magnetic material fixed to the lower end of the plunger case 21, and a plunger arranged in the plunger case 21 facing the attractor 22. A plunger spring 24 disposed between the suction element 22 and the plunger 23 is provided. Further, the fixing sleeve 25 fixed to the lower end of the suction element 22, the electromagnetic coil 26 arranged on the outer periphery of the plunger case 21 and wound around the bobbin 26a, and the outside including the electromagnetic coil 26 and the bobbin 26a are included. It includes a box 27 and a joint iron 28 that secures a magnetic path from the lower part of the outer box 27 to the suction element 22.

プランジャケース２１は、下方側が開口した有底筒状に形成され、内部にプランジャ室２０を画定している。また、プランジャケース２１は、その側面の一部によって吸引子２２を覆うように吸引子２２に溶接等により固定されている。吸引子２２は、プランジャ２３側に開口するすり鉢状の吸引面２２ａと、プランジャばね２４を収容するばね収容孔２２ｂと、ばね収容孔２２ｂの底部を貫通する挿通孔２２ｃとを有している。 The plunger case 21 is formed in the shape of a bottomed cylinder with an opening on the lower side, and defines the plunger chamber 20 inside. Further, the plunger case 21 is fixed to the suction element 22 by welding or the like so as to cover the suction element 22 by a part of the side surface thereof. The suction element 22 has a mortar-shaped suction surface 22a that opens toward the plunger 23, a spring accommodating hole 22b that accommodates the plunger spring 24, and an insertion hole 22c that penetrates the bottom of the spring accommodating hole 22b.

プランジャ２３は、吸引子２２に吸引されるように適宜な磁性体によって構成され、プランジャ室２０内に収容されている。また、プランジャ２３は、吸引子２２側にテーパ部２３１を有している。そして、プランジャ２３はその外周面がプランジャケース２１の内周面に摺接するように、軸線Ｘ方向に移動可能に設けられている。さらに、プランジャ２３は、その上面から吸引子２２側端部に連通する縦孔２３ａと後述の連結ロッド３１を固定するための挿通孔２３ｂとが中央部に形成されている。 The plunger 23 is made of an appropriate magnetic material so as to be attracted by the suction element 22, and is housed in the plunger chamber 20. Further, the plunger 23 has a tapered portion 231 on the suction element 22 side. The plunger 23 is provided so as to be movable in the axis X direction so that its outer peripheral surface is in sliding contact with the inner peripheral surface of the plunger case 21. Further, the plunger 23 is formed with a vertical hole 23a communicating from the upper surface thereof to the end portion on the suction element 22 side and an insertion hole 23b for fixing the connecting rod 31 described later in the central portion.

連結部３は、上端部がプランジャ２３に連結される連結ロッド３１と、連結ロッド３１の下端部に固定される固定金具３２と、固定金具３２に固着されて弁体５を保持する弁ホルダ部３３とで構成されている。連結ロッド３１は、その下端部に固定金具３２を結合する結合軸３１ａと、結合軸３１ａより径が大きく吸引子２２側に位置するボス部３１ｂとを有している。また、上端部には、プランジャ２３に結合する結合軸３１ｃを有している。 The connecting portion 3 includes a connecting rod 31 whose upper end is connected to the plunger 23, a fixing bracket 32 fixed to the lower end of the connecting rod 31 , and a valve holder portion fixed to the fixing bracket 32 to hold the valve body 5. It is composed of 33. The connecting rod 31 has a connecting shaft 31a for connecting the fixing bracket 32 to the lower end thereof, and a boss portion 31b having a diameter larger than that of the connecting shaft 31a and located on the suction element 22 side. Further, the upper end portion has a coupling shaft 31c to be coupled to the plunger 23.

ダイヤフラム４は、ゴム製で略円盤状の形状をしており、中央に内ビード部４１を有し、外周に外ビード部４２を有している。そして、連結ロッド３１の下端部の結合軸３１ａにダイヤフラム４の内ビード部４１を装着するとともに、固定金具３２を結合軸３１ａに嵌め込んで、結合軸３１ａの端部をかしめることにより、固定金具３２と連結ロッド３１のボス部３１ｂとによりダイヤフラム４が挟み付けて固定されている。また、固定金具３２の下端に弁体ホルダ３３が溶接等により固着されている。 The diaphragm 4 is made of rubber and has a substantially disk-like shape, and has an inner bead portion 41 in the center and an outer bead portion 42 on the outer periphery. Then, the inner bead portion 41 of the diaphragm 4 is attached to the coupling shaft 31a at the lower end of the connecting rod 31, and the fixing bracket 32 is fitted into the coupling shaft 31a and fixed by crimping the end portion of the coupling shaft 31a. The diaphragm 4 is sandwiched and fixed by the metal fitting 32 and the boss portion 31b of the connecting rod 31. Further, the valve body holder 33 is fixed to the lower end of the fixing bracket 32 by welding or the like.

弁体ホルダ３３には、弁座部材１Ｂの弁座面１２ａに対向するように円柱状の弁体取付孔３３ａが形成されている。また、弁体取付孔３３ａと同軸にして、弁ばね収容孔３３ｂ及び弁室１０側に開口する連通孔３３ｃが形成されている。さらに、図３に示すように、弁体ホルダ３３は略円柱形状で、弁座面１２ａに対向する平行なＤカット面３３ｄを有している。そして、弁ばね収容孔３３ｂ内に弁ばね５１が収容されるとともに、弁体取付孔３３ａ内に、弁ばね５１に当接するようにして弁体５が装着されている。 The valve body holder 33 is formed with a columnar valve body mounting hole 33a so as to face the valve seat surface 12a of the valve seat member 1B. Further, a communication hole 33c that opens on the valve spring accommodating hole 33b and the valve chamber 10 side is formed coaxially with the valve body mounting hole 33a. Further, as shown in FIG. 3, the valve body holder 33 has a substantially cylindrical shape and has a parallel D-cut surface 33d facing the valve seat surface 12a. The valve spring 51 is housed in the valve spring accommodating hole 33b, and the valve body 5 is mounted in the valve body mounting hole 33a so as to be in contact with the valve spring 51.

連結部３に固定されたダイヤフラム４は、外ビード部４２を本体部１Ａの電磁駆動部２側の段部１ａ内に収容され、この外ビード部４２が電磁駆動部２の外函２７と本体部１Ａとにより挟み付けられるようにして、ダイヤフラム４が弁ハウジング１に固定されている。これにより、このダイヤフラム４は、弁室１０と電磁駆動部２とを気密に封止している。また、連結部３の連結ロッド３１は、吸引子２２の挿通孔２２ｃに挿通されるとともに、上端部の結合軸３１ｃがプランジャ２３の挿通孔２３ｂに挿通され、この結合軸３１ｃの端部をかしめることにより、連結ロッド３１（連結部３）がプランジャ２３に固定されている。なお、連結ロッド３１には、縦孔と横孔からなる均圧路３１ｄが形成されており、この均圧路３１ｄによりプランジャ室２０におけるプランジャ２３の上下の空間が連通されている。 In the diaphragm 4 fixed to the connecting portion 3, the outer bead portion 42 is housed in the step portion 1a on the electromagnetic drive portion 2 side of the main body portion 1A, and the outer bead portion 42 is the outer box 27 of the electromagnetic drive portion 2 and the main body. The diaphragm 4 is fixed to the valve housing 1 so as to be sandwiched by the portion 1A. As a result, the diaphragm 4 airtightly seals the valve chamber 10 and the electromagnetic drive unit 2 . Further, the connecting rod 31 of the connecting portion 3 is inserted into the insertion hole 22c of the suction element 22, and the coupling shaft 31c at the upper end is inserted into the insertion hole 23b of the plunger 23, and the end portion of the coupling shaft 31c is inserted. By tightening, the connecting rod 31 (connecting portion 3) is fixed to the plunger 23. A pressure equalizing path 31d composed of a vertical hole and a horizontal hole is formed in the connecting rod 31, and the space above and below the plunger 23 in the plunger chamber 20 is communicated with the pressure equalizing path 31d.

弁体５は、略円柱形状で、弁座部材１Ｂの弁座面１２ａ上を摺動するシール面５ａを有している。シール面５ａは二次側ポート１２の内径より大きな径を有する面である。これにより、弁体５は連結部３（プランジャ２３）の移動により弁座部材１Ｂの弁座面１２ａに対して摺動可能となっている。 The valve body 5 has a substantially cylindrical shape and has a sealing surface 5a that slides on the valve seat surface 12a of the valve seat member 1B. The sealing surface 5a is a surface having a diameter larger than the inner diameter of the secondary port 12. As a result, the valve body 5 is slidable with respect to the valve seat surface 12a of the valve seat member 1B by the movement of the connecting portion 3 (plunger 23).

以上の構成により、図１に示す非通電時、すなわち電磁コイル２６に通電がなされていないときは、プランジャばね２４のばね力により、プランジャ２３、連結部３及び弁体５が上方に付勢されて、連結ロッド３１のボス部３１ｂが吸引子２２の下端に当接した所定位置で停止される。このボス部３１ｂ及び吸引子２２は「ストッパ手段」を構成している。すなわち、プランジャばね２４によりプランジャ２３が吸引子２２から所定位置まで離間した状態のときにボス部３１ｂが吸引子２２の下端に当接することで、一次側圧力がさらに増加したとしても、プランジャ２３が、さらに吸引子２２から離間する方向へ移動することを規制しており、これにより、プランジャ２３と吸引子２２との間隔が変動することを防止している。そして、この所定位置で、弁体５は弁座面１２ａ上で、二次側ポート１２を閉じており、弁閉状態となる。また、この弁閉状態では上記のようにプランジャ２３と吸引子２２との間隔の変動が防止されるので、弁体５が移動することがなく、一次側圧力の変動によっても弁漏れを生じることもない。一方、図２に示す通電時、すなわち電磁コイル２６に通電がなされると、吸引子２２とプランジャ２３との間に吸引力が発生して、プランジャ２３、連結部３及び弁体５が下降し、弁体５は二次側ポート１２を開とし、弁開状態となる。このように、この第１実施形態の電磁弁は通電により弁開状態となる「通電開仕様」の電磁弁である。 With the above configuration, when the electromagnetic coil 26 is not energized, that is, when the electromagnetic coil 26 is not energized, the plunger 23, the connecting portion 3, and the valve body 5 are urged upward by the spring force of the plunger spring 24. The boss portion 31b of the connecting rod 31 is stopped at a predetermined position in contact with the lower end of the suction element 22. The boss portion 31b and the suction element 22 form a "stopper means". That is, even if the primary side pressure is further increased by the boss portion 31b coming into contact with the lower end of the suction element 22 when the plunger 23 is separated from the suction element 22 by the plunger spring 24 to a predetermined position, the plunger 23 can be used. Further, it is restricted to move in a direction away from the suction element 22, thereby preventing the distance between the plunger 23 and the suction element 22 from fluctuating. Then, at this predetermined position, the valve body 5 closes the secondary side port 12 on the valve seat surface 12a, and the valve is in the closed state. Further, in this valve closed state, the fluctuation of the distance between the plunger 23 and the suction element 22 is prevented as described above, so that the valve body 5 does not move and valve leakage occurs due to the fluctuation of the primary pressure. Nor. On the other hand, when energized as shown in FIG. 2, that is, when the electromagnetic coil 26 is energized, an attractive force is generated between the suction element 22 and the plunger 23, and the plunger 23, the connecting portion 3 and the valve body 5 are lowered. , The valve body 5 opens the secondary side port 12 and is in the valve open state. As described above, the solenoid valve of the first embodiment is a "energized open specification" solenoid valve that is opened by energization.

そして、弁体５を弁座面１２ａ上で摺動移動（スライド）させることで弁開状態となるようにしており、弁開状態では一次側ポート１１から流入した流体は、弁室１０から二次側ポート１２に流出するが、その時の流体の流れは、図３に示すように、弁体ホルダ３３の外周からＤカット面３３ｄと弁座面１２ａとの間を介して二次側ポート１２に流出する流れとなる。したがって、弁開状態では、弁体ホルダ３３は二次側ポート１２への流路を阻害しない位置にあるので、弁体５が流体の流れを阻害することなく、十分な流量を確保することができる。 Then, the valve body 5 is slid and moved (sliding) on the valve seat surface 12a to enter the valve open state, and in the valve open state, the fluid flowing in from the primary side port 11 flows from the valve chamber 10 to the second. The fluid flows out to the secondary side port 12, and the fluid flow at that time flows from the outer periphery of the valve body holder 33 to the secondary side port 12 via between the D-cut surface 33d and the valve seat surface 12a. It becomes a flow that flows out to. Therefore, in the valve open state, the valve body holder 33 is in a position that does not obstruct the flow path to the secondary port 12, so that the valve body 5 does not obstruct the flow of fluid and secures a sufficient flow rate. can.

弁体ホルダ３３は弁体５を保持するものであり、その機能上、弁体ホルダ３３と弁座面１２ａとの間のクリアランス（この実施形態ではＤカット面３３ｄと弁座面１２ａとの間隔）は、構造上、殆ど制約を受けることがない。すなわち、弁開状態では、流体は、弁体ホルダ３３と弁座面１２ａとのクリアランスを介して二次側ポート１２に流出するものであるが、この流体の流路となるクリアランスは十分に広く設けることができる。また、実施形態ではクリアランスはＤカット面３３ｄのように平坦な面で構成しているが流線型などその他の構成でもよい。 The valve body holder 33 holds the valve body 5, and in terms of its function, the clearance between the valve body holder 33 and the valve seat surface 12a (in this embodiment, the distance between the D-cut surface 33d and the valve seat surface 12a). ) Is structurally almost unrestricted. That is, in the valve open state, the fluid flows out to the secondary port 12 through the clearance between the valve body holder 33 and the valve seat surface 12a, but the clearance that becomes the flow path of this fluid is sufficiently wide. Can be provided. Further, in the embodiment, the clearance is configured by a flat surface such as the D-cut surface 33d, but other configurations such as streamlined may be used.

以上の第１実施形態では、非通電時のプランジャ２３の所定位置からのさらなる移動を規制するストッパ手段を、連結部３のボス部３１ｂと吸引子２２の下端面とにより構成しているが、図４の変形例のようにしてもよい。なお、以下の変形例及び第２実施形態において第１実施形態と同様な要素には図１乃至図３と同符号を付記して重複する説明は適宜省略する。 In the above first embodiment, the stopper means for restricting the further movement of the plunger 23 from the predetermined position when the plunger 23 is not energized is composed of the boss portion 31b of the connecting portion 3 and the lower end surface of the suction element 22. It may be like the modification of FIG. In the following modified examples and the second embodiment, the same reference numerals as those in FIGS. 1 to 3 are added to the elements similar to those in the first embodiment, and the overlapping description will be omitted as appropriate.

図４の変形例は、プランジャ２３の上端部にボス部２３２を形成し、非通電状態で、プランジャばね２４のばね力によりプランジャ２３が上昇したとき、ボス部２３２がプランジャケース２１の天板２１ａに当接するようにしたものである。すなわち、このボス部２３２及び天板２１ａが、非通電時のプランジャ２３の所定位置からのさらなる移動を規制するストッパ手段を構成している。このボス部２３２はプランジャ２３よりも小径となっているためプランジャ室２０においてプランジャケース２１と天板２１ａとの間に隅Ｒが形成されたとしても隅Ｒの影響を受けずにボス部２３２を天板２１ａに当接させることができる。なお、この変形例では、ボス部２３２の高さ分だけ、連結ロッド３１におけるボス部３１ｂ′は第１実施形態のボス部３１ｂより薄くなっている。 In the modified example of FIG. 4, the boss portion 232 is formed at the upper end portion of the plunger 23, and when the plunger 23 is raised by the spring force of the plunger spring 24 in a non-energized state, the boss portion 232 is the top plate 21a of the plunger case 21. It is designed to come into contact with. That is, the boss portion 232 and the top plate 21a constitute a stopper means for restricting further movement of the plunger 23 from a predetermined position when the plunger 23 is not energized. Since the boss portion 232 has a smaller diameter than the plunger 23, even if a corner R is formed between the plunger case 21 and the top plate 21a in the plunger chamber 20, the boss portion 232 is not affected by the corner R. It can be brought into contact with the top plate 21a. In this modification, the boss portion 31b'in the connecting rod 31 is thinner than the boss portion 31b of the first embodiment by the height of the boss portion 232.

図５は第２実施形態の電磁弁の非通電時（弁開状態）の縦断面図、図６は第２実施形態の電磁弁の通電時（弁閉状態）の縦断面図である。この第２実施形態の電磁弁は電磁駆動部２の電磁コイル２６へ通電することにより弁閉状態となる「通電閉仕様」の電磁弁である。 FIG. 5 is a vertical cross-sectional view of the solenoid valve of the second embodiment when it is not energized (valve open state), and FIG. 6 is a vertical cross-sectional view of the solenoid valve of the second embodiment when it is energized (valve closed state). The solenoid valve of the second embodiment is a "concentrated closed specification" solenoid valve that is closed by energizing the electromagnetic coil 26 of the electromagnetic drive unit 2.

この第２実施形態において第１実施形態と異なる点は以下のとおりである。この第２実施形態においても、弁座部材１Ｂ′は本体部１Ａと共に弁ハウジング１を構成するものであるが、この弁座部材１Ｂ′では、管部１Ｂ２′と二次側ポート１２′が、第１実施形態よりも下方に設けている。弁体５の移動範囲を第１実施形態よりも僅かに上方の範囲となるようにし、その分だけ弁体ホルダ３３′は第１実施形態の弁体ホルダ３３′よりも軸線Ｘ方向の長さが短くなっている。 The differences between the second embodiment and the first embodiment are as follows. Also in this second embodiment, the valve seat member 1B'consists of the valve housing 1 together with the main body portion 1A, but in this valve seat member 1B', the pipe portion 1B2'and the secondary side port 12'are It is provided below the first embodiment. The movement range of the valve body 5 is set to be slightly above the range of the first embodiment, and the valve body holder 33'is longer than the valve body holder 33'of the first embodiment in the axis X direction. Is getting shorter.

以上の構成により、図５に示す非通電時、すなわち電磁コイル２６に通電がなされていないときは、プランジャばね２４のばね力により、プランジャ２３、連結部３及び弁体５が上方に付勢されて、連結ロッド３１のボス部３１ｂが吸引子２２の下端に当接した所定位置で停止される。そして、この所定位置で、弁体５は弁座面１２ａ上にあって二次側ポート１２を開としており、弁開状態となる。一方、図６に示す通電時、すなわち電磁コイル２６に通電がなされると、吸引子２２とプランジャ２３との間に吸引力が発生して、プランジャ２３、連結部３及び弁体５が下降し、弁体５は弁座面１２ａ上で二次側ポート１２を閉じ、弁閉状態となる。このように、この第２実施形態の電磁弁は通電により弁閉状態となる「通電閉仕様」の電磁弁である。 With the above configuration, when the electromagnetic coil 26 is not energized, that is, when the electromagnetic coil 26 is not energized, the plunger 23, the connecting portion 3, and the valve body 5 are urged upward by the spring force of the plunger spring 24. The boss portion 31b of the connecting rod 31 is stopped at a predetermined position in contact with the lower end of the suction element 22. Then, at this predetermined position, the valve body 5 is on the valve seat surface 12a and the secondary side port 12 is open, so that the valve is in the open state. On the other hand, when energized as shown in FIG. 6, that is, when the electromagnetic coil 26 is energized, an attractive force is generated between the suction element 22 and the plunger 23, and the plunger 23, the connecting portion 3 and the valve body 5 are lowered. , The valve body 5 closes the secondary side port 12 on the valve seat surface 12a, and is in the valve closed state. As described above, the solenoid valve of the second embodiment is a "energized closed specification" solenoid valve that is closed by energization.

この第２実施形態においても、弁体５を弁座面１２ａ上で摺動移動（スライド）させることで弁開状態となるようにしており、弁開状態では一次側ポート１１から流入した流体は、弁室１０から二次側ポート１２に流出するが、その時の流体の流れは、弁体ホルダ３３′の端部側から二次側ポート１２に流出する流れとなる。したがって、弁開状態では弁体ホルダ３３′は二次側ポート１２への流路を阻害しない位置にあるので、第１実施形態と同様に、弁体５が流体の流れを阻害することなく、十分な流量を確保することができる。 Also in this second embodiment, the valve body 5 is slid and moved (sliding) on the valve seat surface 12a to be in the valve open state, and in the valve open state, the fluid flowing in from the primary side port 11 is in the valve open state. , The fluid flows out from the valve chamber 10 to the secondary side port 12, but the fluid flow at that time is the flow that flows out from the end side of the valve body holder 33'to the secondary side port 12. Therefore, in the valve open state, the valve body holder 33'is in a position that does not obstruct the flow path to the secondary port 12, so that the valve body 5 does not obstruct the flow of fluid as in the first embodiment. A sufficient flow rate can be secured.

ここで、弁室１０内は、一次側ポート１１から流体が流入するので高圧となり、特に弁閉状態のときこの高圧の圧力がダイヤフラム４に作用する。このため、ダイヤフラム４は、連結部３及びプランジャ２３に対して押し上げる方向に付勢力を作用させる。しかし、電磁駆動部２において、通電時に吸引子２２がプランジャ２３を吸引する吸引力はプランジャばね２４のばね力及びダイヤフラム４に作用する力より十分に強い力で、確実に駆動作用するように設定されている。 Here, the inside of the valve chamber 10 becomes high pressure because the fluid flows in from the primary side port 11, and this high pressure acts on the diaphragm 4, especially when the valve is closed. Therefore, the diaphragm 4 exerts an urging force on the connecting portion 3 and the plunger 23 in a pushing-up direction. However, in the electromagnetic drive unit 2, the suction force at which the suction element 22 sucks the plunger 23 when energized is set to be sufficiently stronger than the spring force of the plunger spring 24 and the force acting on the diaphragm 4 to ensure the drive action. Has been done.

上述の各実施形態で説明したように、ストッパ手段を備えているので、ダイヤフラム４の付勢力に抗することができるため、プランジャ２３と吸引子２２との間の間隔を確実に維持することができる。したがって、ダイヤフラム４による付勢力が作用したとしても、プランジャ２３と吸引子２２との間の間隔が一定になるので、通電時の作動を安定させることができる。 As described in each of the above-described embodiments, since the stopper means is provided, it is possible to resist the urging force of the diaphragm 4, so that the distance between the plunger 23 and the suction element 22 can be reliably maintained. can. Therefore, even if the urging force of the diaphragm 4 acts, the distance between the plunger 23 and the suction element 22 becomes constant, so that the operation at the time of energization can be stabilized.

なお、各実施形態において、弁閉状態では、二次側ポート１２内が低圧で、弁体５に高圧の背圧が加わるので、シール面５ａが弁座面１２ａに圧接される。このことは、連通孔３３ｃが無くても同様であり、また、弁体５と弁体ホルダ３３とが一体であっても同様である。 In each embodiment, in the valve closed state, the inside of the secondary side port 12 has a low pressure, and a high back pressure is applied to the valve body 5, so that the sealing surface 5a is pressed against the valve seat surface 12a. This is the same even if the communication hole 33c is not provided, and is the same even if the valve body 5 and the valve body holder 33 are integrated.

以上、本発明の実施の形態について図面を参照して詳述してきたが、具体的な構成はこれらの実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。 Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the design changes, etc. within the range not deviating from the gist of the present invention, etc. Even if there is, it is included in the present invention.

１ 弁ハウジング
１Ａ 本体部
１Ｂ 弁座部材
１０ 弁室
１１ 一次側ポート
１２ 二次側ポート
１２ａ 弁座面
２ 電磁駆動部
２０ プランジャ室
２１ プランジャケース
２１ａ 天板（ストッパ手段）
２２ 吸引子（ストッパ手段）
２２ａ 吸引面
２２ｂ ばね収容孔
２２ｃ 挿通孔
２３ プランジャ
２３ａ 縦孔
２３ｂ 挿通孔
２４ プランジャばね
２５ 固定用スリーブ
２６ 電磁コイル
２７ 外函
２８ 継鉄
３ 連結部
３１ 連結ロッド
３１ａ 結合軸
３１ｂ ボス部（ストッパ手段）
３１ｃ 結合軸
３１ｄ 均圧路
３２ 固定金具
３３ 弁ホルダ部
３３ａ 弁体取付孔
３３ｂ 弁ばね収容孔
３３ｃ 連通孔
４ ダイヤフラム
４１ 内ビード部
４２ 外ビード部
５ 弁体
５ａ シール面
Ｘ 軸線 1 Valve housing 1A Main body 1B Valve seat member 10 Valve chamber 11 Primary side port 12 Secondary side port 12a Valve seat surface 2 Electromagnetic drive unit 20 Plunger chamber 21 Plunger case 21a Top plate (stopper means)
22 Attractor (stopper means)
22a Suction surface 22b Spring accommodating hole 22c Insertion hole 23 Plunger 23a Vertical hole 23b Insertion hole 24 Plunger spring 25 Fixing sleeve 26 Electromagnetic coil 27 Outer box 28 Joint iron 3 Connecting part 31 Connecting rod 31a Coupling shaft 31b Boss part (stopper means)
31c Coupling shaft 31d Pressure equalizing path 32 Fixing bracket 33 Valve holder 33a Valve body mounting hole 33b Valve spring accommodating hole 33c Communication hole 4 Diaphragm 41 Inner bead 42 Outer bead 5 Valve body 5a Seal surface X axis

Claims (1)

弁体を収容する弁室が形成された弁ハウジングと、プランジャケース内で吸引子に対向して配置されたプランジャを該プランジャケースの軸線方向に移動させて前記弁体を駆動する電磁駆動部と、前記弁ハウジングの前記弁室と前記電磁駆動部の間を封止するダイヤフラムと、を備えた電磁弁において、
前記弁ハウジングに、前記弁室に連通して流体が導入される一次側ポートと、前記弁室の側部に設けられて前記軸線と平行に配置された弁座面にて前記弁室に開口する一つの二次側ポートと、が形成され、
前記電磁駆動部は、前記吸引子が前記プランジャよりも前記ダイヤフラム側に配置されるとともに、該吸引子と前記プランジャとの間に該プランジャを該吸引子から離間する方向に付勢するプランジャばねを備え、
前記吸引子の挿通孔に挿通されて、前記プランジャと前記弁体とを連結する連結部をさらに有し、前記プランジャの移動により前記弁体が前記弁座面上を摺動して、該弁体により前記二次側ポートを開閉するよう構成され、
前記プランジャばねにより前記プランジャが前記吸引子から所定位置まで離間して前記弁体が前記二次側ポートを閉状態とするとき、前記プランジャの前記所定位置からさらに吸引子から離間する方向への移動を規制するストッパ手段を備え、
前記電磁駆動部にて前記プランジャが前記吸引子側に吸引された位置で、前記弁体が前記二次側ポートを開状態とすることを特徴とする電磁弁。 A valve housing in which a valve chamber for accommodating the valve body is formed, and an electromagnetic drive unit that drives the valve body by moving a plunger arranged in the plunger case facing the suction element in the axial direction of the plunger case. In a solenoid valve provided with a diaphragm that seals between the valve chamber of the valve housing and the electromagnetic drive portion.
The valve housing is opened to the valve chamber by a primary side port communicating with the valve chamber and introducing a fluid, and a valve seat surface provided on the side portion of the valve chamber and arranged in parallel with the axis. One secondary port, and is formed,
The electromagnetic drive unit has a plunger spring in which the attractor is arranged on the diaphragm side of the plunger and the plunger is urged between the attractor and the plunger in a direction away from the plunger. Prepare,
It is further inserted into the insertion hole of the suction element to further have a connecting portion for connecting the plunger and the valve body, and the valve body slides on the valve seat surface due to the movement of the plunger to cause the valve. The body is configured to open and close the secondary port.
When the plunger is separated from the aspirator by the plunger spring to a predetermined position and the valve body closes the secondary port, the plunger is further separated from the aspirator from the predetermined position of the plunger. Equipped with a stopper means to regulate movement,
A solenoid valve characterized in that the valve body opens the secondary side port at a position where the plunger is attracted to the suction element side by the electromagnetic drive unit.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000074248A (en) 1998-08-27 2000-03-14 Saginomiya Seisakusho Inc Solenoid valve
JP2017166547A (en) 2016-03-15 2017-09-21 株式会社鷺宮製作所 Slide valve and heat pump device with this slide valve

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07260034A (en) * 1994-03-18 1995-10-13 Smc Corp Two-port solenoid valve
US5947442A (en) * 1997-09-10 1999-09-07 Cummins Engine Company, Inc. Solenoid actuated valve assembly
DE19930868B4 (en) * 1998-07-07 2014-02-13 Schaeffler Technologies AG & Co. KG Flow control valve
JP2000304147A (en) * 1999-04-22 2000-11-02 Saginomiya Seisakusho Inc Motor-driven control valve
US6129115A (en) * 1999-07-02 2000-10-10 Mac Valves, Inc. Self-latching solenoid valve assembly
JP2006200654A (en) * 2005-01-21 2006-08-03 Mitsubishi Electric Corp Four way solenoid valve
JP5572809B2 (en) * 2010-09-30 2014-08-20 株式会社テージーケー Control valve
JP6317448B2 (en) * 2013-12-11 2018-04-25 デイコ アイピー ホールディングス, エルエルシーDayco Ip Holdings, Llc Solenoid driven gate valve
JP6084175B2 (en) * 2014-03-13 2017-02-22 株式会社鷺宮製作所 Solenoid control valve
US9625053B2 (en) * 2014-10-14 2017-04-18 Woodward, Inc. Hydraulic actuator lockout
JP6556000B2 (en) * 2015-09-18 2019-08-07 株式会社不二工機 Direct acting solenoid valve and four-way switching valve equipped with it as a pilot valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000074248A (en) 1998-08-27 2000-03-14 Saginomiya Seisakusho Inc Solenoid valve
JP2017166547A (en) 2016-03-15 2017-09-21 株式会社鷺宮製作所 Slide valve and heat pump device with this slide valve

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