JP2007092825A - Pilot type solenoid valve - Google Patents

Pilot type solenoid valve Download PDF

Info

Publication number
JP2007092825A
JP2007092825A JP2005281100A JP2005281100A JP2007092825A JP 2007092825 A JP2007092825 A JP 2007092825A JP 2005281100 A JP2005281100 A JP 2005281100A JP 2005281100 A JP2005281100 A JP 2005281100A JP 2007092825 A JP2007092825 A JP 2007092825A
Authority
JP
Japan
Prior art keywords
valve body
pilot
main valve
stopper
plunger
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.)
Granted
Application number
JP2005281100A
Other languages
Japanese (ja)
Other versions
JP4865287B2 (en
Inventor
Kenichi Suzuki
健一 鈴木
Kaoru Koyaizu
薫 小柳津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikoki Corp
Original Assignee
Fujikoki Corp
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
Application filed by Fujikoki Corp filed Critical Fujikoki Corp
Priority to JP2005281100A priority Critical patent/JP4865287B2/en
Priority to KR1020060043769A priority patent/KR101273872B1/en
Priority to CN2006101110184A priority patent/CN1940358B/en
Publication of JP2007092825A publication Critical patent/JP2007092825A/en
Application granted granted Critical
Publication of JP4865287B2 publication Critical patent/JP4865287B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/34—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float acting on pilot valve controlling the cut-off apparatus
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated 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
    • F16K31/0644—One-way valve
    • F16K31/0651—One-way valve the fluid passing through the solenoid coil

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pilot type solenoid valve capable of preventing the main valve element from not returning certainly without bringing about increase in the number of component parts, man-hours, or the cost. <P>SOLUTION: The pilot type solenoid valve 1 has a pilot valve element 35 driven into opening and closing by an electromagnetic actuator 20 and the main valve element 15 opening and closing complying with the motions of the pilot valve element 35, and further a stopper is provided to make motion restriction of the main valve element 15 in the opening direction, wherein the stopper is composed of a stopper surface part 50D where the end face of the main valve element 15 runs against and a recessed part 50E recessing from the stopper surface part 50D to the opening direction of the main valve element. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、通電励磁用のコイル、該コイルの内周側に配在された吸引子、及び吸引子に対向配置されたプランジャからなる電磁式アクチュエータによりパイロット弁体を開閉駆動し、このパイロット弁体に応動して主弁体を開閉するようにされたパイロット型電磁弁に関する。   According to the present invention, a pilot valve body is driven to open and close by an electromagnetic actuator comprising a coil for energization excitation, an attractor disposed on the inner peripheral side of the coil, and a plunger disposed to face the attractor. The present invention relates to a pilot-type solenoid valve adapted to open and close a main valve body in response to a body.

この種のパイロット型電磁弁の従来例を図４に示す（下記特許文献１等も参照）。図示例のパイロット型電磁弁１’は、例えばエアコン等の冷凍サイクルに使用されるもので、主弁座（弁口）１４を有する主弁室１３が設けられた弁本体１０と、この弁本体１０の主弁室１３に接続された入口継手（流入口）１１及び弁本体１０における主弁座１４より下流に接続された出口継手（流出口）１２と、弁本体１０に摺動自在に嵌挿されて前記主弁座１４に接離する主弁体１５と、電磁式アクチュエータ２０とを備える。   FIG. 4 shows a conventional example of this type of pilot type solenoid valve (see also Patent Document 1 below). The pilot type solenoid valve 1 ′ in the illustrated example is used for a refrigeration cycle such as an air conditioner, for example, and includes a valve main body 10 provided with a main valve chamber 13 having a main valve seat (valve port) 14, and the valve main body. An inlet joint (inlet) 11 connected to the main valve chamber 13 of 10 and an outlet joint (outlet) 12 connected downstream of the main valve seat 14 in the valve body 10 and a valve body 10 are slidably fitted. A main valve body 15 that is inserted into and away from the main valve seat 14 and an electromagnetic actuator 20 are provided.

電磁式アクチュエータ２０は、通電励磁用のコイル２２、このコイル２２の外周を覆うように配在されたハウジング２１、コイル２２の上部内周側に配在されてボルト２８によりハウジング２１に固定された有底円筒状ないし円柱状の吸引子２５、この吸引子２５に対向配置されたプランジャ３０を備えている。プランジャ３０の先端には、保持穴３１が設けられ、この保持穴３１にボールからなるパイロット弁体３５が、その下面の一部を露出させた状態で収納されてかしめ固定（かしめ部３１ａ）されている。プランジャ３０の上部には、コイルばねからなる閉弁ばね２６が挿入係止される縦穴（ばね室）３０ａと横穴（均圧穴）３０ｂが形成されている。   The electromagnetic actuator 20 includes a coil 22 for energizing excitation, a housing 21 disposed so as to cover the outer periphery of the coil 22, and an upper inner peripheral side of the coil 22 and fixed to the housing 21 by bolts 28. A bottomed cylindrical or columnar suction element 25 and a plunger 30 arranged to face the suction element 25 are provided. A holding hole 31 is provided at the tip of the plunger 30, and a pilot valve body 35 made of a ball is housed in the holding hole 31 with a part of the lower surface thereof exposed and fixed by caulking (caulking portion 31 a). ing. In the upper part of the plunger 30, a vertical hole (spring chamber) 30a and a horizontal hole (equal pressure equalization hole) 30b into which a valve closing spring 26 made of a coil spring is inserted and locked are formed.

プランジャ３０は、コイル２２と吸引子２５との間にその上部が配在されたガイドパイプ３２に摺動自在に嵌挿されている。ガイドパイプ３２の上端３２ａは、吸引子２５の外周段差部に溶接等の方法によって固定され、その下端鍔状部３２ｂの外周部分が、弁本体１０の上部内周段差部１６に載せられている。ガイドパイプ３２の下端鍔状部３２ｂは、弁本体１０の上部内周段差部１６に設けられたかしめ部１６ａにより、間にリング状部材１７を挟んでかしめ固定され、さらに、前記かしめ部１６ａとリング状部材１７及びガイドパイプ３２とがろう付け（ろう付け部１８）固定されている。   The plunger 30 is slidably fitted into a guide pipe 32 having an upper portion disposed between the coil 22 and the attractor 25. The upper end 32 a of the guide pipe 32 is fixed to the outer peripheral step portion of the suction element 25 by a method such as welding, and the outer peripheral portion of the lower end hook-shaped portion 32 b is placed on the upper inner peripheral step portion 16 of the valve body 10. . The lower end hook-shaped portion 32b of the guide pipe 32 is fixed by caulking portions 16a provided on the upper inner circumferential step portion 16 of the valve body 10 with the ring-shaped member 17 interposed therebetween, and further, the caulking portion 16a The ring-shaped member 17 and the guide pipe 32 are fixed by brazing (the brazed portion 18).

主弁体１５は、真鍮製の外周部材１５Ｂとそれに内嵌されてかしめ固定（かしめ部１５ｃ）された断面凸形状のテフロン製の内周部材１５Ａとからなる短円柱状体とされ、その中央部を貫通するように、前記パイロット弁体３５により開閉されるパイロット通路３７が形成されている。主弁体１５の外周部材１５Ｂには、内周部材１５Ａに接するように均圧穴１９が形成されている。   The main valve body 15 is a short cylindrical body composed of an outer peripheral member 15B made of brass and an inner peripheral member 15A made of Teflon having a convex cross section and being fitted and fixed (caulking portion 15c). A pilot passage 37 that is opened and closed by the pilot valve body 35 is formed so as to penetrate the portion. A pressure equalizing hole 19 is formed in the outer peripheral member 15B of the main valve body 15 so as to be in contact with the inner peripheral member 15A.

また、主弁室１３には、主弁体１５を開弁方向に付勢するコイルばねからなる開弁ばね３３が縮装されている。   The main valve chamber 13 is fitted with a valve opening spring 33 formed of a coil spring that urges the main valve body 15 in the valve opening direction.

プランジャ３０と主弁体１５との間は背圧室４０となっており、主弁体１５が閉弁しているとき、入口継手（流入口）１１から主弁室１３に導入された流体は、主弁体１５の外周面と弁本体１０の内周面との間（摺動面間）を通って背圧室４０に導入され、この背圧室４０からプランジャ３０の外周面とガイドパイプ３２の内周面との間（摺動面間）及び横穴３０ｂ、縦穴３０ａを通って、吸引子２５の下端面とプランジャ３０との間に形成される間隙空間Ｓにも導かれる。   A back pressure chamber 40 is provided between the plunger 30 and the main valve body 15. When the main valve body 15 is closed, the fluid introduced from the inlet joint (inlet) 11 to the main valve chamber 13 is The gas is introduced into the back pressure chamber 40 through the space between the outer peripheral surface of the main valve body 15 and the inner peripheral surface of the valve body 10 (between the sliding surfaces). 32 is also guided to a gap space S formed between the lower end surface of the suction element 25 and the plunger 30 through the space between the inner peripheral surface 32 (between the sliding surfaces), the horizontal hole 30b, and the vertical hole 30a.

上記構成に加え、図示例のパイロット型電磁弁１’では、前記ガイドパイプ３２の下端鍔状部３２ｂの下面内周側（平坦面）が、主弁体１５の開弁方向（上方）の移動規制を行うストッパ面部となっている。   In addition to the above configuration, in the pilot type solenoid valve 1 ′ shown in the drawing, the lower surface inner peripheral side (flat surface) of the lower end flange portion 32 b of the guide pipe 32 moves in the valve opening direction (upward) of the main valve body 15. It is a stopper surface part that regulates.

このような構成とされたパイロット型電磁弁１’においては、コイル２２が通電されると、吸引子２５にプランジャ３０が引き寄せられて吸着し、これに伴い、パイロット弁体３５が開弁方向（上方）に移動（リフト）せしめられる。これにより、パイロット通路３７が開かれ、背圧室４０の流体が一挙にパイロット通路３７を通じて出口継手（流出口）１２に排出される。このため、背圧室４０が減圧され、主弁体１５が開弁ばね３３の付勢力によりリフトせしめられ、開弁する。この場合、主弁体１５は、その上端面が前記ストッパ面部（ガイドパイプ３２の下端鍔状部の内周側部分）３２ｂに衝接せしめられるまでリフトされ、そのストッパ面部３２ｂ（環状平坦面）に面接触して停止せしめられる。   In the pilot type electromagnetic valve 1 ′ having such a configuration, when the coil 22 is energized, the plunger 30 is attracted and attracted to the attractor 25, and accordingly, the pilot valve body 35 is opened ( It is moved (lifted) upward. As a result, the pilot passage 37 is opened, and the fluid in the back pressure chamber 40 is discharged to the outlet joint (outlet) 12 through the pilot passage 37 all at once. For this reason, the back pressure chamber 40 is decompressed, the main valve body 15 is lifted by the urging force of the valve opening spring 33, and the valve is opened. In this case, the main valve body 15 is lifted until its upper end surface is brought into contact with the stopper surface portion (inner peripheral side portion of the lower end flange-shaped portion of the guide pipe 32) 32b, and its stopper surface portion 32b (annular flat surface). Can be stopped by surface contact.

特開平１０−１０３５５６号公報Japanese Patent Laid-Open No. 10-103556

しかしながら、前記した如くの従来のパイロット型電磁弁では、ストッパ面部（環状平坦面）に主弁体の上端面（環状平坦面）全面が面接触するようにされているので、ストッパ面部や主弁体に付着している流体（冷媒）や潤滑油の表面張力（吸盤作用）により、パイロット弁体３５が閉弁方向（下方）に戻ろうとしても、主弁体がストッパ面部に吸着して離れなくなり、閉弁状態に戻らなくなることがあった。   However, in the conventional pilot type solenoid valve as described above, the entire upper end surface (annular flat surface) of the main valve body is in surface contact with the stopper surface portion (annular flat surface). Even if the pilot valve body 35 tries to return to the valve closing direction (downward) due to the fluid (refrigerant) adhering to the body or the surface tension (suction cup action) of the lubricating oil, the main valve body is adsorbed to the stopper face and separated. In some cases, the valve could not return to the closed state.

このような主弁体の不戻りを防止するためには、特殊形状のストッパを別途に設けたり、主弁体に特別の加工を施したりする必要があり、部品点数や工数が増加してコスト高になる嫌いがあった。   In order to prevent such non-returning of the main valve body, it is necessary to provide a special-shaped stopper separately or to perform special processing on the main valve body. There was a dislike of becoming high.

本発明は、上記事情に鑑みてなされたもので、その目的とするところは、部品点数、工数、コストの増加を招くことなく、主弁体の不戻りを確実に防止できるパイロット型電磁弁を提供することにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pilot-type solenoid valve that can reliably prevent the return of the main valve body without increasing the number of parts, man-hours, and cost. It is to provide.

前記の目的を達成すべく、本発明に係るパイロット型電磁弁は、基本的には、電磁式アクチュエータによりパイロット弁体を開閉駆動し、このパイロット弁体に応動して主弁体を開閉するようにされたもので、前記主弁体の開弁方向の移動規制を行うストッパを有し、該ストッパは、前記主弁体の端面部が衝接するストッパ面部と、該ストッパ面部から前記主弁体の開弁方向に凹む凹部と、からなっていることを特徴としている。   In order to achieve the above object, the pilot solenoid valve according to the present invention basically opens and closes the pilot valve body by an electromagnetic actuator, and opens and closes the main valve body in response to the pilot valve body. The stopper has a stopper for restricting movement of the main valve body in the valve opening direction, and the stopper includes a stopper surface portion with which an end surface portion of the main valve body abuts, and the main valve body from the stopper surface portion. And a concave portion recessed in the valve opening direction.

より具体的には、主弁座を有する主弁室が設けられた弁本体と、前記主弁座に接離する主弁体と、前記主弁座より上流側に設けられた流入口と、前記主弁座より下流側に設けられた流出口と、前記主弁体を開弁方向に付勢する開弁ばねと、前記パイロット弁体を閉弁方向に付勢する閉弁ばねと、通電励磁用のコイルと、該コイルの内周側に配在された吸引子と、該吸引子に対向配置されたプランジャと、該プランジャと一体的に移動するようにされたパイロット弁体と、前記プランジャと前記主弁体との間に形成された背圧室と、該背圧室と前記流出口とを連通するパイロット通路と、を備え、前記パイロット弁体により前記パイロット通路を開閉するようにされる。   More specifically, a valve body provided with a main valve chamber having a main valve seat, a main valve body that contacts and separates from the main valve seat, an inflow port provided upstream from the main valve seat, An outlet provided downstream from the main valve seat, a valve opening spring that urges the main valve body in the valve opening direction, a valve closing spring that urges the pilot valve body in the valve closing direction, and energization A coil for excitation, an attractor disposed on the inner peripheral side of the coil, a plunger disposed to face the attractor, a pilot valve body configured to move integrally with the plunger, A back pressure chamber formed between the plunger and the main valve body, and a pilot passage communicating the back pressure chamber and the outlet, the pilot valve body opening and closing the pilot passage. Is done.

そして、前記主弁体の開弁方向の移動規制を行うストッパを有し、該ストッパは、前記主弁体の端面部が衝接するストッパ面部と、該ストッパ面部から前記主弁体の開弁方向に凹む凹部と、からなっていることを特徴としている。   And a stopper for restricting movement in the valve opening direction of the main valve body, the stopper including a stopper surface portion with which the end surface portion of the main valve body abuts, and a valve opening direction of the main valve body from the stopper surface portion. It is characterized by comprising a concave portion recessed in the groove.

前記パイロット通路は、好ましくは、前記主弁体に形成される。   The pilot passage is preferably formed in the main valve body.

前記背圧室は、好ましくは、前記プランジャと、該プランジャの先端に取り付けられたパイロット弁体と、前記プランジャのガイドとなるガイドパイプと、前記主弁体と、で画成される。   The back pressure chamber is preferably defined by the plunger, a pilot valve body attached to the tip of the plunger, a guide pipe serving as a guide for the plunger, and the main valve body.

前記ガイドパイプは、好ましくは、前記プランジャが摺動自在に嵌挿される小径部と、前記主弁体が摺動自在に嵌挿される大径部と、を備え、前記小径部と大径部との間の段丘部が、前記ストッパ面部と凹部とを有するストッパとなっている。   The guide pipe preferably includes a small-diameter portion into which the plunger is slidably inserted, and a large-diameter portion into which the main valve body is slidably inserted, and the small-diameter portion and the large-diameter portion The terrace between the two is a stopper having the stopper surface portion and the concave portion.

前記パイロット弁体は、好ましくは、ボールからなっている。   The pilot valve body is preferably a ball.

本発明に係るパイロット型電磁弁では、ストッパが、主弁体の端面部が衝接するストッパ面部と該ストッパ面部から主弁体の開弁方向に凹む凹部とからなっているので、前記凹部が「逃げ」となり、従来のもののようにストッパ面部に主弁体の端面部全面が面接触することはないので、表面張力による吸着力が弱くなる。そのため、主弁体の不戻りを確実に防止できる。   In the pilot type solenoid valve according to the present invention, the stopper is composed of a stopper surface portion with which the end surface portion of the main valve body abuts and a concave portion that is recessed from the stopper surface portion in the valve opening direction of the main valve body. Since the entire end face of the main valve element does not come into surface contact with the stopper face unlike the conventional one, the suction force due to the surface tension is weakened. Therefore, it is possible to reliably prevent the main valve body from returning.

また、ガイドパイプの素材であるパイプにプレス絞り加工を施してストッパ面部と凹部とからなるストッパを一体に成形することができるので、部品点数、工数等の増加を招かずに済み、コストを低く抑えることができる。   In addition, the pipe, which is the material of the guide pipe, can be press-drawn and the stopper consisting of the stopper face and recess can be integrally formed, so there is no need to increase the number of parts, man-hours, etc., and the cost can be reduced. Can be suppressed.

以下、本発明のパイロット型電磁弁の実施形態を図面を参照しながら説明する。
図１は、本発明に係るパイロット型電磁弁の一実施形態を示す縦断面図である。
図示実施形態のパイロット型電磁弁１において、前述した図４に示される従来例のパイロット型電磁弁１’の各部と同一構成ないし同一機能を有する部分には、共通の符号を付して、重複説明を省略し、以下においては相違点を重点的に説明する。 Embodiments of a pilot type solenoid valve of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of a pilot type electromagnetic valve according to the present invention.
In the pilot type solenoid valve 1 of the illustrated embodiment, parts having the same configuration or the same functions as those of the conventional part of the pilot type solenoid valve 1 ′ shown in FIG. The description will be omitted, and the differences will be mainly described below.

本実施形態のパイロット型電磁弁１も、例えばエアコン等の冷凍サイクルに使用されるもので、前述した従来例とは、ガイドパイプの構成が異なる。   The pilot type solenoid valve 1 of the present embodiment is also used in a refrigeration cycle such as an air conditioner, for example, and differs from the above-described conventional example in the configuration of the guide pipe.

すなわち、本実施形態のガイドパイプ５０は、図２、図３に示される如くに、プランジャ３０が摺動自在に嵌挿される小径部５０Ａと、主弁体１５が摺動自在に嵌挿される大径部５０Ｂと、この大径部５０Ｂより大径の弁本体形成部５０Ｃを備え、前記小径部５０Ａと大径部５０Ｂとの間の段丘部が、平坦なストッパ面部５０Ｄと上に凹む断面三角形状の凹部５０Ｅ（１２０°間隔で３カ所）とを有するストッパとなっている。   That is, as shown in FIGS. 2 and 3, the guide pipe 50 of the present embodiment has a small diameter portion 50A into which the plunger 30 is slidably inserted and a large diameter into which the main valve body 15 is slidably inserted. A section 50B having a diameter portion 50B and a valve body forming portion 50C having a diameter larger than that of the large diameter portion 50B, and a stepped portion between the small diameter portion 50A and the large diameter portion 50B is recessed with a flat stopper surface portion 50D. It is a stopper having concave portions 50E (three places at intervals of 120 °).

換言すれば、ガイドパイプの素材であるパイプにプレス絞り加工を施して、主弁体１５の端面部（上端面）が衝接するストッパ面部５０Ｄと該ストッパ面部５０Ｄから主弁体１５の開弁方向に凹む凹部５０Ｅとを一体に成形したものである。   In other words, the pipe which is the material of the guide pipe is subjected to press drawing, and the stopper surface portion 50D where the end surface portion (upper end surface) of the main valve body 15 abuts, and the valve opening direction of the main valve body 15 from the stopper surface portion 50D. And a concave portion 50E that is recessed in the mold.

また、主弁体１５の上部には背圧室４０となる凹部１５ｂが形成され、この凹部１５ｂの外周側の上端面部１５ａが前記ストッパ面部５０Ｄに衝接するようになっている。   Further, a concave portion 15b serving as a back pressure chamber 40 is formed in the upper portion of the main valve body 15, and an upper end surface portion 15a on the outer peripheral side of the concave portion 15b comes into contact with the stopper surface portion 50D.

このような構成とされたパイロット型電磁弁１においては、コイル２２が通電されると、吸引子２５にプランジャ３０が引き寄せられて吸着し、これに伴い、パイロット弁体３５が開弁方向（上方）に移動（リフト）せしめられる。これにより、パイロット通路３７が開かれ、背圧室４０の流体が一挙にパイロット通路３７を通じて出口継手（流出口）１２に排出される。このため、背圧室４０が減圧され、主弁体１５が開弁ばね３３の付勢力によりリフトせしめられ、開弁する。この場合、主弁体１５は、その上端面部１５ａが前記ストッパ面部５０Ｄに衝接せしめられるまでリフトされ、そのストッパ面部５０Ｄに面接触して停止せしめられる。   In the pilot-type solenoid valve 1 having such a configuration, when the coil 22 is energized, the plunger 30 is attracted and attracted to the attractor 25, and accordingly, the pilot valve body 35 is opened (upward). ) Is moved (lifted). As a result, the pilot passage 37 is opened, and the fluid in the back pressure chamber 40 is discharged to the outlet joint (outlet) 12 through the pilot passage 37 all at once. For this reason, the back pressure chamber 40 is decompressed, the main valve body 15 is lifted by the urging force of the valve opening spring 33, and the valve is opened. In this case, the main valve body 15 is lifted until its upper end surface portion 15a is brought into contact with the stopper surface portion 50D, and is stopped in surface contact with the stopper surface portion 50D.

ここで、本実施形態では、ストッパが、主弁体１５の上端面部１５ａが衝接するストッパ面部５０Ｄと該ストッパ面部５０Ｄから主弁体１５の開弁方向に凹む凹部５０Ｅとからなっているので、前記凹部５０Ｅが「逃げ」となり、従来のもののようにストッパ面部に主弁体の端面部全面が面接触することはないので、表面張力による吸着力が弱くなる。そのため、主弁体１５の不戻りを確実に防止できる。   Here, in this embodiment, the stopper is composed of a stopper surface portion 50D with which the upper end surface portion 15a of the main valve body 15 abuts and a concave portion 50E recessed in the valve opening direction of the main valve body 15 from the stopper surface portion 50D. The concave portion 50E becomes “relief”, and the entire end surface portion of the main valve body does not come into surface contact with the stopper surface portion unlike the conventional one, so that the adsorption force due to the surface tension is weakened. Therefore, it is possible to reliably prevent the main valve body 15 from returning.

また、ガイドパイプの素材であるパイプにプレス絞り加工を施してストッパ面部５０Ｄと凹部５０Ｅとからなるストッパを一体に成形することができるので、部品点数、工数等の増加を招かずに済み、コストを低く抑えることができる。   Further, the pipe made of the guide pipe can be press-drawn to form a stopper composed of the stopper face portion 50D and the recessed portion 50E so that the number of parts, man-hours, etc. are not increased and the cost is reduced. Can be kept low.

本発明に係るパイロット型電磁弁の一実施形態を示す縦断面図。The longitudinal cross-sectional view which shows one Embodiment of the pilot type solenoid valve which concerns on this invention. 図１に示されるパイロット型電磁弁の要部拡大図。The principal part enlarged view of the pilot type solenoid valve shown by FIG. 図２のＸ−Ｘ矢視断面図。XX arrow sectional drawing of FIG. パイロット型電磁弁の従来例を示す縦断面図。The longitudinal cross-sectional view which shows the prior art example of a pilot type solenoid valve.

符号の説明Explanation of symbols

１ パイロット型電磁弁
１０ 弁本体
１１ 入口継手（流入口）
１２ 出口継手（流出口）
１３ 主弁室
１４ 主弁座
１５ 主弁体
２０ 電磁式アクチュエータ
２５ 吸引子
２６ 閉弁ばね
３０ プランジャ
３３ 開弁ばね
３５ パイロット弁体
３７ パイロット通路
４０ 背圧室
５０ ガイドパイプ
５０Ａ 小径部
５０Ｂ 大径部
５０Ｃ 弁本体形成部
５０Ｄ ストッパ面部
５０Ｅ 凹部 1 Pilot type solenoid valve 10 Valve body 11 Inlet joint (inlet)
12 Outlet joint (outlet)
13 Main valve chamber 14 Main valve seat 15 Main valve body 20 Electromagnetic actuator 25 Suction element 26 Valve closing spring 30 Plunger 33 Valve opening spring 35 Pilot valve body 37 Pilot passage 40 Back pressure chamber 50 Guide pipe 50A Small diameter portion 50B Large diameter portion 50C Valve body forming part 50D Stopper face part 50E Concave part

Claims (6)

電磁式アクチュエータによりパイロット弁体を開閉駆動し、このパイロット弁体に応動して主弁体を開閉するようにされたパイロット型電磁弁であって、前記主弁体の開弁方向の移動規制を行うストッパを有し、該ストッパは、前記主弁体の端面部が衝接するストッパ面部と、該ストッパ面部から前記主弁体の開弁方向に凹む凹部と、からなっていることを特徴とするパイロット型電磁弁。   A pilot-type solenoid valve that opens and closes a pilot valve body by an electromagnetic actuator and opens and closes the main valve body in response to the pilot valve body, and restricts movement of the main valve body in the valve opening direction. The stopper includes a stopper surface portion with which the end surface portion of the main valve body abuts, and a concave portion that is recessed from the stopper surface portion in the valve opening direction of the main valve body. Pilot type solenoid valve. 主弁座を有する主弁室が設けられた弁本体と、前記主弁座に接離する主弁体と、前記主弁座より上流側に設けられた流入口と、前記主弁座より下流側に設けられた流出口と、前記主弁体を開弁方向に付勢する開弁ばねと、前記パイロット弁体を閉弁方向に付勢する閉弁ばねと、通電励磁用のコイルと、該コイルの内周側に配在された吸引子と、該吸引子に対向配置されたプランジャと、該プランジャと一体的に移動するようにされたパイロット弁体と、前記プランジャと前記主弁体との間に形成された背圧室と、該背圧室と前記流出口とを連通するパイロット通路と、を備え、前記パイロット弁体により前記パイロット通路を開閉するようにされたパイロット型電磁弁であって、
前記主弁体の開弁方向の移動規制を行うストッパを有し、該ストッパは、前記主弁体の端面部が衝接するストッパ面部と、該ストッパ面部から前記主弁体の開弁方向に凹む凹部と、からなっていることを特徴とするパイロット型電磁弁。 A valve body provided with a main valve chamber having a main valve seat, a main valve body contacting and separating from the main valve seat, an inlet provided upstream from the main valve seat, and downstream from the main valve seat An outlet provided on the side, a valve opening spring that urges the main valve body in the valve opening direction, a valve closing spring that urges the pilot valve body in the valve closing direction, a coil for energization excitation, An attractor disposed on the inner peripheral side of the coil, a plunger disposed to face the attractor, a pilot valve body that is configured to move integrally with the plunger, the plunger, and the main valve body And a pilot passage that communicates the back pressure chamber and the outlet, and is configured to open and close the pilot passage by the pilot valve body. Because
A stopper for restricting movement of the main valve element in the valve opening direction; the stopper is recessed in the valve opening direction of the main valve element from the stopper surface part with which the end surface part of the main valve element comes into contact; A pilot-type solenoid valve comprising a recess. 前記パイロット通路は、前記主弁体に形成されていることを特徴とする請求項２に記載のパイロット型電磁弁。   The pilot type solenoid valve according to claim 2, wherein the pilot passage is formed in the main valve body. 前記背圧室は、前記プランジャと、該プランジャの先端に取り付けられたパイロット弁体と、前記プランジャのガイドとなるガイドパイプと、前記主弁体と、で画成されていることを特徴とする請求項２又は３に記載のパイロット型電磁弁。   The back pressure chamber is defined by the plunger, a pilot valve body attached to the tip of the plunger, a guide pipe serving as a guide for the plunger, and the main valve body. The pilot type solenoid valve according to claim 2 or 3. 前記ガイドパイプは、前記プランジャが摺動自在に嵌挿される小径部と、前記主弁体が摺動自在に嵌挿される大径部と、を備え、前記小径部と大径部との間の段丘部が、前記ストッパ面部と凹部とを有するストッパとなっていることを特徴とする請求項４に記載のパイロット型電磁弁。   The guide pipe includes a small-diameter portion into which the plunger is slidably inserted, and a large-diameter portion into which the main valve body is slidably inserted, and between the small-diameter portion and the large-diameter portion. 5. The pilot solenoid valve according to claim 4, wherein the terrace portion is a stopper having the stopper surface portion and a concave portion. 前記パイロット弁体は、ボールからなっていることを特徴とする請求項１から５のいずれかに記載のパイロット型電磁弁。   6. The pilot type solenoid valve according to claim 1, wherein the pilot valve body is made of a ball.
JP2005281100A 2005-09-28 2005-09-28 Pilot type solenoid valve Expired - Fee Related JP4865287B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2005281100A JP4865287B2 (en) 2005-09-28 2005-09-28 Pilot type solenoid valve
KR1020060043769A KR101273872B1 (en) 2005-09-28 2006-05-16 Pilot solenoid valve
CN2006101110184A CN1940358B (en) 2005-09-28 2006-08-09 Guide valve type electromagnetic valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005281100A JP4865287B2 (en) 2005-09-28 2005-09-28 Pilot type solenoid valve

Publications (2)

Publication Number Publication Date
JP2007092825A true JP2007092825A (en) 2007-04-12
JP4865287B2 JP4865287B2 (en) 2012-02-01

Family

ID=37958777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005281100A Expired - Fee Related JP4865287B2 (en) 2005-09-28 2005-09-28 Pilot type solenoid valve

Country Status (3)

Country Link
JP (1) JP4865287B2 (en)
KR (1) KR101273872B1 (en)
CN (1) CN1940358B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106051188A (en) * 2016-08-11 2016-10-26 大连世安科技股份有限公司 Electromagnetic valve
JP2017516957A (en) * 2014-06-04 2017-06-22 ダンフォス アクチ−セルスカブ solenoid valve
JP2018150959A (en) * 2017-03-10 2018-09-27 株式会社鷺宮製作所 Motor valve and refrigeration cycle system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5620833B2 (en) * 2011-01-24 2014-11-05 株式会社不二工機 3-way solenoid valve
CN102359600A (en) * 2011-09-30 2012-02-22 河南航天压力元件有限公司 Pilot electromagnetic valve
CN103912708A (en) * 2013-01-08 2014-07-09 浙江三花股份有限公司 Pilot-operated electromagnetic valve and assembling method thereof
JP6130684B2 (en) * 2013-02-15 2017-05-17 Ｋｙｂ株式会社 Solenoid valve
CN103216662B (en) * 2013-04-01 2015-08-26 河南航天液压气动技术有限公司 A kind of solenoid valve
US10612677B2 (en) * 2017-02-13 2020-04-07 Goodrich Corporation Solenoid valve for inflation system
JP6924499B2 (en) * 2019-03-13 2021-08-25 株式会社不二工機 solenoid valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131580A (en) * 1984-11-30 1986-06-19 Nec Corp Semiconductor laser
JPH02283985A (en) * 1989-04-24 1990-11-21 Saginomiya Seisakusho Inc Manufacture of pilot type solenoid valve
JPH10103556A (en) * 1996-09-24 1998-04-21 Saginomiya Seisakusho Inc Solenoid valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131580U (en) * 1985-02-06 1986-08-16
CN85201815U (en) * 1985-04-29 1986-03-05 浙江瑞安永久机电研究所 Unidirectional solenoid valve
CN2339820Y (en) * 1998-04-22 1999-09-22 浙江三花集团公司 Secondary-open type electromagnetic valve
CN2551820Y (en) * 2002-07-03 2003-05-21 陈苗通 High-frequency electromagnetic valve for air jet loom
CN2675970Y (en) * 2003-05-12 2005-02-02 浙江三花股份有限公司 Fore running type bidirectional current electromagnetic valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131580A (en) * 1984-11-30 1986-06-19 Nec Corp Semiconductor laser
JPH02283985A (en) * 1989-04-24 1990-11-21 Saginomiya Seisakusho Inc Manufacture of pilot type solenoid valve
JPH10103556A (en) * 1996-09-24 1998-04-21 Saginomiya Seisakusho Inc Solenoid valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017516957A (en) * 2014-06-04 2017-06-22 ダンフォス アクチ−セルスカブ solenoid valve
US10663077B2 (en) 2014-06-04 2020-05-26 Danfoss A/S Solenoid valve
CN106051188A (en) * 2016-08-11 2016-10-26 大连世安科技股份有限公司 Electromagnetic valve
JP2018150959A (en) * 2017-03-10 2018-09-27 株式会社鷺宮製作所 Motor valve and refrigeration cycle system
JP2021121761A (en) * 2017-03-10 2021-08-26 株式会社鷺宮製作所 Motor operated valve and refrigeration cycle system

Also Published As

Publication number Publication date
KR20070035939A (en) 2007-04-02
KR101273872B1 (en) 2013-06-11
JP4865287B2 (en) 2012-02-01
CN1940358B (en) 2010-05-12
CN1940358A (en) 2007-04-04

Similar Documents

Publication Publication Date Title
JP4865287B2 (en) Pilot type solenoid valve
JP4504243B2 (en) Control valve for variable displacement compressor
JP2007092826A (en) Pilot type solenoid valve
JP2008190550A (en) Solenoid valve
JP4714626B2 (en) Control valve for variable displacement compressor
CN111043320B (en) Electromagnetic valve
JP5918188B2 (en) Control valve
JP2015224649A (en) Two-stage pilot type solenoid valve
JP2009036182A (en) Control valve for variable capacity compressor
US20160009266A1 (en) Braking fluid control apparatus
JP2007092859A (en) Pilot type solenoid valve
US20050001189A1 (en) Normally open solenoid valve
JP2005265009A (en) Check valve
JP6167010B2 (en) Pilot type control valve
JP2006242046A (en) Fuel injection valve
JP6924499B2 (en) solenoid valve
JP2001330167A (en) Valve gear
JP2006258074A (en) Fuel injection valve
JP5658194B2 (en) solenoid valve
JP6009186B2 (en) solenoid valve
JP2007032701A (en) Valve structure
WO2023013620A1 (en) Solenoid valve
JP4641190B2 (en) Control valve for variable displacement compressor
JP2019218985A (en) On-off valve and manufacturing method of the same
WO2022137693A1 (en) Differential pressure valve and valve device having same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080804

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100527

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101005

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101202

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110308

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110502

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110809

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111007

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20111108

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111110

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141118

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4865287

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees