JP7130601B2 - Electromagnetic coil and valve device - Google Patents

Electromagnetic coil and valve device Download PDF

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Publication number
JP7130601B2
JP7130601B2 JP2019110566A JP2019110566A JP7130601B2 JP 7130601 B2 JP7130601 B2 JP 7130601B2 JP 2019110566 A JP2019110566 A JP 2019110566A JP 2019110566 A JP2019110566 A JP 2019110566A JP 7130601 B2 JP7130601 B2 JP 7130601B2
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spacer member
electromagnetic coil
insertion hole
operating portion
spacer
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JP2020200938A (en
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秀剛 渡邉
紀郎 丸山
昌宏 松本
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Saginomiya Seisakusho Inc
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Saginomiya Seisakusho Inc
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Priority to CN202010489193.7A priority patent/CN112081985B/en
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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
    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift 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
    • 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
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted 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
    • 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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor

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

Description

本発明は、弁装置の作動部におけるプランジャ等を作動させる電磁コイル及びその電磁コイルを備えた弁装置に関する。 TECHNICAL FIELD The present invention relates to an electromagnetic coil for actuating a plunger or the like in an operating portion of a valve device, and a valve device provided with the electromagnetic coil.

従来、この種の電磁コイル及び弁装置として、例えば実開昭５９－８６４７７号公報（特許文献１）に開示されたものがある。この従来の弁装置は電磁弁であり、プランジャチューブ内に、プランジャばねを介して吸引子と対向するプランジャを挿通し、プランジャチューブの外周にソレノイド（コイル）を配置したものである。そして、ソレノイドの電磁力でプランジャを駆動して弁体を作動させるものである。すなわち、プランジャチューブ、吸引子及びプランジャは、弁本体部側において弁体を作動させる筒状の作動部を構成するとともに、ソレノイドとその外函は電磁コイルを構成している。そして、この作動部が電磁コイルの中央に挿通配置された構造となっている。 A conventional electromagnetic coil and valve device of this type is disclosed, for example, in Japanese Utility Model Laid-Open No. 59-86477 (Patent Document 1). This conventional valve device is an electromagnetic valve, in which a plunger opposed to an attractor is inserted through a plunger spring through a plunger tube, and a solenoid (coil) is arranged around the outer circumference of the plunger tube. The electromagnetic force of the solenoid drives the plunger to operate the valve body. That is, the plunger tube, the attracting element and the plunger form a cylindrical operating part for operating the valve element on the valve body side, and the solenoid and its outer case form an electromagnetic coil. And, it has a structure in which this working portion is inserted through the center of the electromagnetic coil.

実開昭５９－８６４７７号公報Japanese Utility Model Laid-Open No. 59-86477

前記のように電磁弁（弁装置）は、電磁コイルに対して弁本体部の作動部を挿通する構造となっているが、多くの電磁弁は、電磁コイルを作動部に対して着脱可能となっている。そして、電磁弁の仕様に応じて、弁本体部はそのままで作動部に取り付ける電磁コイルを適宜変更できるようにしている。 As described above, the solenoid valve (valve device) has a structure in which the working part of the valve main body is inserted into the electromagnetic coil. It's becoming Then, according to the specifications of the solenoid valve, the solenoid coil attached to the operating part can be appropriately changed while the valve main body part remains as it is.

しかしながら、弁本体部（作動部）を変更しない場合、作動部の長さと電磁コイルの長さに違いが生じる場合もある。例えば、電磁コイルの長さが作動部の長さより長い場合（大きい場合）、弁本体部の作動部（吸引子）と電磁コイルの外函とを磁気的に接続するために、例えば特許文献１の図２のような磁性体からなるスペーサ部材を用い、このスペーサ部材を作動部の吸引子と電磁コイルの外函との間に設けることが考えられる。しかし、このような場合、電磁コイルの付け替え作業のときに、スペーサ部材が電磁コイルから抜け落ちて、スペーサ部材を紛失してしまう虞がある。 However, if the valve body (operating portion) is not changed, the length of the operating portion and the length of the electromagnetic coil may differ. For example, when the length of the electromagnetic coil is longer (larger) than the length of the operating portion, in order to magnetically connect the operating portion (attractor) of the valve body and the outer case of the electromagnetic coil, for example, Patent Document 1 It is conceivable to use a spacer member made of a magnetic material as shown in FIG. 2 and to provide this spacer member between the attractor of the operating portion and the outer casing of the electromagnetic coil. However, in such a case, there is a risk that the spacer member will fall off from the electromagnetic coil and be lost during the replacement work of the electromagnetic coil.

本発明は、弁本体部の作動部（吸引子）と電磁コイルの外函とを磁気的に接続するスペーサ部材を用いた電磁コイルにおいて、スペーサ部材の脱落及び紛失を防止できる電磁コイル、及びその電磁コイルを用いた弁装置を提供することを課題とする。 The present invention provides an electromagnetic coil using a spacer member that magnetically connects an operating portion (attractor) of a valve body and an outer case of an electromagnetic coil, and an electromagnetic coil that can prevent the spacer member from falling off or being lost. An object of the present invention is to provide a valve device using an electromagnetic coil.

請求項１の電磁コイルは、筒状のプランジャケース内にプランジャが内挿されるとともに該プランジャケースの端部に吸引子が固定されてなる作動部を有し、前記作動部の前記プランジャに連動して弁体を作動させる弁本体部に対して装着される電磁コイルであって、前記作動部を挿通させる作動部挿通孔が形成されたモールドコイルと、前記モールドコイルの前記作動部挿通孔と軸線方向に対向する基板部を有する磁性体からなる外函と、前記作動部の前記吸引子と前記外函の前記基板部との間で該吸引子と該基板部とを磁気的に接続するスペーサ部材とを備え、前記モールドコイルの前記作動部挿通孔からの前記スペーサ部材の前記基板部とは反対側への抜けを阻止する抜け止め構造を備えたことを特徴とする。 The electromagnetic coil according to claim 1 has an operating portion in which a plunger is inserted in a cylindrical plunger case and an attractor is fixed to the end of the plunger case, and the operating portion interlocks with the plunger. an electromagnetic coil mounted on a valve main body for operating a valve body, comprising: a molded coil formed with an operating portion insertion hole through which the operating portion is inserted; and the operating portion insertion hole of the molded coil and an axis line An outer case made of a magnetic material having substrate portions facing each other in a direction, and a spacer for magnetically connecting the attractor and the substrate portion between the attractor of the operating portion and the substrate portion of the outer case. and a retaining structure for preventing the spacer member from coming off from the operating portion insertion hole of the molded coil to the side opposite to the substrate portion.

この際、前記スペーサ部材の少なくとも一部が前記作動部挿通孔の内径よりも大きな外径を有し、この大きな外径の部分が前記抜け止め構造の一部を構成していることが好ましい。 At this time, it is preferable that at least a portion of the spacer member has an outer diameter larger than the inner diameter of the operating portion insertion hole, and the large outer diameter portion constitutes a part of the retaining structure.

また、前記作動部への取り付け前の状態で、前記スペーサ部材の前記抜け止め構造の一部を構成する前記一部が、前記外函の前記基板部と前記作動部挿通孔との間で、前記作動部挿通孔の軸線方向に移動可能に遊嵌されていることが好ましい。 Further, in a state before being attached to the operating portion, the portion constituting a part of the retainer structure of the spacer member is positioned between the base portion of the outer case and the operating portion insertion hole, It is preferable that the operating portion insertion hole is loosely fitted so as to be movable in the axial direction.

また、前記スペーサ部材は、前記外函の前記基板部に接触する外函側結合面と前記吸引子に接触する吸引子側結合面とを有し、前記吸引子側結合面は前記吸引子の当該吸引子側結合面に対向する面の全面に接触するとともに、前記外函側結合面は該対向する面の全面より広い面積で前記基板部に接触するよう構成されていることが好ましい。 In addition, the spacer member has an outer case-side connecting surface that contacts the base plate portion of the outer case and a attractor-side connecting surface that contacts the attractor, and the attractor-side connecting surface is the attractor. It is preferable that the outer casing-side connecting surface is configured to contact the base plate portion over a wider area than the entire surface facing the attractor-side connecting surface while contacting the entire surface.

この際、前記作動部挿通孔の前記基板部側に該作動部挿通孔より大きな内径を有するスペーサ嵌合孔を有し、前記スペーサ部材が前記スペーサ嵌合孔に嵌合され、前記作動部挿通孔と前記スペーサ嵌合孔との段差部に対して、前記スペーサ部材の端部外周が当接することで前記抜け止め構造が構成されていることが好ましい。 At this time, a spacer fitting hole having an inner diameter larger than that of the working part insertion hole is provided on the substrate part side of the working part insertion hole, and the spacer member is fitted into the spacer fitting hole to pass the working part. It is preferable that the retainer structure is formed by abutting an outer periphery of an end portion of the spacer member against a stepped portion between the hole and the spacer fitting hole.

また、前記スペーサ部材の外周に前記作動部挿通孔の内径より径の大きな鍔部が形成され、前記作動部挿通孔の前記基板部側の開口周囲部に前記鍔部が当接することで前記抜け止め構造が構成されていることが好ましい。 Further, a collar portion having a larger diameter than the inner diameter of the working portion insertion hole is formed on the outer periphery of the spacer member, and the collar portion comes into contact with the peripheral portion of the opening of the working portion insertion hole on the side of the substrate portion, whereby the disengagement is achieved. Preferably, a stop structure is provided.

また、前記作動部挿通孔の前記基板部側に該作動部挿通孔から離れるにしたがって径が拡径するようなテーパ面を有するスペーサ嵌合孔を有し、前記スペーサ部材が前記スペーサ嵌合孔に嵌合され、前記スペーサ部材の外周面と前記テーパ面とが当接することで前記抜け止め構造が構成されていることが好ましい。 Further, a spacer fitting hole having a tapered surface whose diameter increases with increasing distance from the working part insertion hole is provided on the side of the substrate part of the working part insertion hole, and the spacer member is positioned in the spacer fitting hole. It is preferable that the retainer structure is configured by the outer peripheral surface of the spacer member and the tapered surface coming into contact with each other.

本発明の弁装置は、前記弁本体部の前記作動部に対して、請求項１乃至６の何れか一項に記載の電磁コイルを備えたことを特徴とする。 A valve device according to the present invention is characterized in that the electromagnetic coil according to any one of claims 1 to 6 is provided for the operating portion of the valve body portion.

本発明の電磁コイルによれば、抜け止め構造により、モールドコイルの作動部挿通孔からのスペーサ部材の基板部とは反対側への抜けが阻止されるので、スペーサ部材の脱落及び紛失を防止できる。 According to the electromagnetic coil of the present invention, the retaining structure prevents the spacer member from coming out of the operating portion insertion hole of the molded coil toward the side opposite to the substrate portion. .

また、本発明の弁装置によれば、電磁コイルの着脱時にスペーサ部材の脱落及び紛失を防止できる。 Further, according to the valve device of the present invention, it is possible to prevent the spacer member from coming off or being lost when the electromagnetic coil is attached or detached.

本発明の第１実施形態の弁装置の非通電時の縦断面図である。FIG. 2 is a vertical cross-sectional view of the valve device according to the first embodiment of the present invention when electricity is not supplied; 第１実施形態における電磁コイルの弁本体部への取り付け前の状態を示す要部拡大断面図である。FIG. 4 is an enlarged cross-sectional view of essential parts showing a state before the electromagnetic coil is attached to the valve main body in the first embodiment; 第１実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 4 is an enlarged cross-sectional view of essential parts showing a state after the electromagnetic coil is attached to the working portion in the first embodiment; 本発明の第２実施形態における電磁コイルの弁本体部への取り付け前の状態を示す要部拡大断面図である。FIG. 8 is an enlarged cross-sectional view of essential parts showing a state before the electromagnetic coil is attached to the valve main body in the second embodiment of the present invention; 第２実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 11 is an enlarged cross-sectional view of a main part showing a state after the electromagnetic coil is attached to the working portion in the second embodiment; 本発明の第３実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 11 is an enlarged cross-sectional view of a main part showing a state after the electromagnetic coil is attached to the working portion according to the third embodiment of the present invention; 本発明の第４実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 11 is an enlarged cross-sectional view of a main part showing a state after attachment of an electromagnetic coil to an operating portion in a fourth embodiment of the present invention; 本発明の第５実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 11 is an enlarged cross-sectional view of a main part showing a state after attachment of an electromagnetic coil to an operating portion according to a fifth embodiment of the present invention; 本発明の第６実施形態における電磁コイルの作動部への取り付け後の状態を示す要部拡大断面図である。FIG. 11 is an enlarged cross-sectional view of a main part showing a state after an electromagnetic coil is attached to an operating portion according to a sixth embodiment of the present invention;

次に、本発明の電磁コイル及び弁装置の実施形態について図面を参照して説明する。以下の各実施形態の弁装置はパイロット式電磁弁の例である。図１は第１実施形態の弁装置の非通電時の縦断面図である。なお、以下の説明における「上下」の概念は図１の図面における上下に対応する。この第１実施形態の弁装置は、電磁コイル１０と、弁本体部２０とで構成されている。図中の符号「Ｌ」は後述のプランジャチューブ３１及び作動部挿通孔１３Ａの中心となる軸線である。 Next, embodiments of the electromagnetic coil and valve device of the present invention will be described with reference to the drawings. The valve devices of the following embodiments are examples of pilot solenoid valves. FIG. 1 is a vertical cross-sectional view of the valve device of the first embodiment when no power is supplied. Note that the concept of "up and down" in the following description corresponds to up and down in the drawing of FIG. The valve device of the first embodiment is composed of an electromagnetic coil 10 and a valve body portion 20. As shown in FIG. The symbol "L" in the drawing is the axis that is the center of the plunger tube 31 and the operating portion insertion hole 13A, which will be described later.

電磁コイル１０は、外函１１と、固定板１２と、モールドコイル１３と、スペーサ部材４とを備えて構成され、固定板１２はモールドコイル１３のモールド樹脂１３ａとのインサート成形により、モールドコイル１３と一体に設けられている。外函１１、固定板１２、およびスペーサ部材４はそれぞれ磁性体からなる。外函１１は、固定板１２とは反対側のモールドコイル１３の端部に嵌合する基板部１１ａと、基板部１１ａから軸線Ｌと平行に同方向にそれぞれ延設された一対の側板部１１ｂ（破線で図示）とを一体に有して「コ」字状に構成されている。また、基板部１１ａは、モータコイル１３の後述の作動部挿通孔１３Ａと交差するように位置している。
なお、一対の側板部１１ｂはモールドコイル１３の側周に位置するとともに、基板部１１ａと反対側の端部で固定板１２を挟持し、かしめ等により固定板１２（及びモールドコイル１３）に対して固定されている。 The electromagnetic coil 10 includes an outer casing 11, a fixed plate 12, a molded coil 13, and a spacer member 4. The fixed plate 12 is inserted into the mold resin 13a of the molded coil 13 by insert molding. is integrated with. The outer case 11, the fixing plate 12, and the spacer member 4 are each made of a magnetic material. The outer case 11 includes a base plate portion 11a fitted to the end portion of the molded coil 13 opposite to the fixed plate 12, and a pair of side plate portions 11b extending from the base plate portion 11a in the same direction in parallel with the axis L. (illustrated by a dashed line) are integrally formed to form a “U” shape. Further, the substrate portion 11a is positioned so as to intersect with an operation portion insertion hole 13A of the motor coil 13, which will be described later.
The pair of side plate portions 11b are positioned on the side circumference of the molded coil 13, and hold the fixed plate 12 at the ends opposite to the substrate portion 11a. is fixed.

モールドコイル１３はボビン１３ｂに円筒状のコイル１３ｃを巻回し、これらをモールド樹脂１３ａで一体成形したものである。また、ボビン１３ｂは中心に略円筒状の孔を有しており、これにより、モールドコイル１３には、軸線Ｌを中心線とする作動部挿通孔１３Ａとスペーサ嵌合孔１３Ｂが形成されている。スペーサ嵌合孔１３Ｂは、作動部挿通孔１３Ａに連通して外函１１の基板部１１ａ側に開口しており、このスペーサ嵌合孔１３Ｂの内径は作動部挿通孔１３Ａの内径より大きくなっている。スペーサ嵌合孔１３Ｂ内には円柱状のスペーサ部材４が嵌合されるとともに、作動部挿通孔１３Ａ内には後述の作動部３の吸引子３３とプランジャチューブ３１が挿通され、この吸引子３３と外函１１の基板部１１ａとの間にスペーサ部材４が介在されている。そして、電磁コイル１０は、基板部１１ａのネジ孔１１ｃと、スペーサ部材４の中心孔１４ａとを介してネジＮにより作動部３の吸引子３３に固定されている。スペーサ部材４の詳細については後述する。 The mold coil 13 is obtained by winding a cylindrical coil 13c around a bobbin 13b and integrally molding them with a mold resin 13a. Further, the bobbin 13b has a substantially cylindrical hole in the center, whereby the mold coil 13 is formed with an operating portion insertion hole 13A and a spacer fitting hole 13B having the axis L as the center line. . The spacer fitting hole 13B communicates with the operating portion insertion hole 13A and opens toward the substrate portion 11a of the outer case 11. The inner diameter of the spacer fitting hole 13B is larger than the inner diameter of the operating portion insertion hole 13A. there is A cylindrical spacer member 4 is fitted into the spacer fitting hole 13B, and a suction element 33 and a plunger tube 31 of the operation section 3, which will be described later, are inserted into the operation section insertion hole 13A. and the substrate portion 11a of the outer case 11, a spacer member 4 is interposed. The electromagnetic coil 10 is fixed to the attractor 33 of the operating section 3 with a screw N through the screw hole 11c of the substrate section 11a and the center hole 14a of the spacer member 4. As shown in FIG. Details of the spacer member 4 will be described later.

弁本体部２０は、弁ハウジング２１とこの弁ハウジング２１に設けられた作動部３とを有しており、弁ハウジング２１は、金属製の継手部２１Ａとシリンダ部２１Ｂとで構成されている。継手部２１Ａは、例えば冷媒等の流体が流入する高圧の一次側継手２１ａと、流体が流出する二次側継手２１ｂと、一次側継手２１ａ及び二次側継手２１ｂと直交する軸線Ｌを中心軸とするホルダ部２１ｃとを有している。そして、シリンダ部２１Ｂはホルダ部２１ｃに対してねじ込みによりホルダ部２１ｃと同軸に固定されている。 The valve body portion 20 has a valve housing 21 and an operating portion 3 provided in the valve housing 21. The valve housing 21 is composed of a metallic joint portion 21A and a cylinder portion 21B. The joint portion 21A includes a high-pressure primary side joint 21a into which a fluid such as a refrigerant flows, a secondary side joint 21b into which the fluid flows out, and an axis L perpendicular to the primary side joint 21a and the secondary side joint 21b. and a holder portion 21c. The cylinder portion 21B is coaxially fixed to the holder portion 21c by screwing into the holder portion 21c.

また、継手部２１Ａには、一次側継手２１ａと二次側継手２１ｂとの間に隔壁２１ｄが形成され、隔壁２１ｄのホルダ部２１ｃ側には主弁座２１ｅが形成されている。主弁座２１ｅには円形開口をなす主弁ポート２１ｆが形成されるとともに、主弁座２１ｅの回りには薄型円形の弁室２１ｇが形成されている。また、シリンダ部２１Ｂはホルダ部２１ｃから作動部３側に延在されるとともに、このシリンダ部２１ｃの内部には円柱形状のガイド孔２１ｈが形成され、このガイド孔２１ｈにピストン弁２２が内挿されている。なお、一次側継手２１ａ内にはストレーナ２１ｉが配設されている。このストレーナ２１ｉは、プラグ２１ｊに取り付けられ、プラグ２１ｊと共に一次側継手２１ａの端部に装着されている。 A partition 21d is formed between the primary side joint 21a and the secondary side joint 21b in the joint portion 21A, and a main valve seat 21e is formed on the holder portion 21c side of the partition 21d. A main valve port 21f having a circular opening is formed in the main valve seat 21e, and a thin circular valve chamber 21g is formed around the main valve seat 21e. The cylinder portion 21B extends from the holder portion 21c toward the operating portion 3, and a cylindrical guide hole 21h is formed in the cylinder portion 21c, and the piston valve 22 is inserted into the guide hole 21h. It is A strainer 21i is arranged in the primary side joint 21a. The strainer 21i is attached to the plug 21j, and is attached to the end of the primary side joint 21a together with the plug 21j.

ピストン弁２２は外形が略円柱形状をしており、外側を覆う金属製のピストン部２２ａとその内側に配設された樹脂製のシール部２２ｂとが相互に圧入され、ピストン部２２ａの上部を内側に折り曲げかしめることにより一体に形成したものである。ピストン弁２２は主弁ポート２１ｆに対向して配置され、弁室２１ｇの底部とピストン弁２２との間には概略円錐台形状の開弁ばね２２ｃが圧縮して配設されている。この開弁ばね２２ｃのばね力によりピストン弁２２は主弁座２１ｅから離間する方向（開弁方向）に付勢されている。そして、シール部２２ｂはピストン弁２２が主弁座２１ｅに着座したときに、主弁ポート２１ｆを閉じる。 The piston valve 22 has a substantially cylindrical outer shape, and a metal piston portion 22a covering the outside and a resin seal portion 22b disposed inside thereof are press-fitted to each other, and the upper portion of the piston portion 22a is pressed. It is integrally formed by bending inward and caulking. The piston valve 22 is arranged to face the main valve port 21f, and between the bottom of the valve chamber 21g and the piston valve 22, a substantially truncated cone-shaped valve opening spring 22c is compressed and arranged. The spring force of the valve opening spring 22c urges the piston valve 22 in a direction away from the main valve seat 21e (valve opening direction). The seal portion 22b closes the main valve port 21f when the piston valve 22 is seated on the main valve seat 21e.

また、シール部２２ｂには中心にパイロットポート２２ｄと導通路２２ｅとが形成されており、パイロットポート２２ｄは導通路２２ｅ及び主弁ポート２１ｆを介して二次側継手２１ｂに導通される。なお、ピストン弁２２とシリンダ部２１Ｂのガイド孔２１ｈとの間にはクリアランスが設けられ、このクリアランスを介して一次側継手２１ａ側の流体がピストン弁２２の背空間に流入可能となっている。 A pilot port 22d and a conducting path 22e are formed in the center of the seal portion 22b, and the pilot port 22d is conducted to the secondary side joint 21b via the conducting path 22e and the main valve port 21f. A clearance is provided between the piston valve 22 and the guide hole 21h of the cylinder portion 21B, and the fluid on the side of the primary side joint 21a can flow into the back space of the piston valve 22 via this clearance.

作動部３は、軸線Ｌを中心とする円筒形状のプランジャチューブ３１と、プランジャチューブ３１内に内挿された磁性体からなるプランジャ３２と、プランジャチューブ３１の上端に固定された磁性体からなる吸引子３３と、プランジャ３２と吸引子３３との間に配設されたプランジャばね３４と、を備えている。 The operating part 3 includes a cylindrical plunger tube 31 centered on the axis L, a plunger 32 made of a magnetic material inserted in the plunger tube 31, and a magnetic material fixed to the upper end of the plunger tube 31. and a plunger spring 34 disposed between the plunger 32 and the attractor 33.

プランジャチューブ３１は、シリンダ部２１Ｂに対してガイド孔２１ｈと同軸にして嵌合され、このプランジャチューブ３１とシリンダ部２１Ｂの端部の周囲がろう付け等により固着されている。また、プランジャ３２は、プランジャチューブ３１内で軸線Ｌ方向（上下方向）に摺動可能に配設されている。プランジャ３２の下端部には円錐状のパイロット弁３２ａが形成されており、このパイロット弁３２ａは、ピストン弁２２のパイロットポート２２ｄを開閉する。 The plunger tube 31 is fitted to the cylinder portion 21B so as to be coaxial with the guide hole 21h. In addition, the plunger 32 is arranged slidably in the direction of the axis L (vertical direction) within the plunger tube 31 . A conical pilot valve 32 a is formed at the lower end of the plunger 32 and opens and closes the pilot port 22 d of the piston valve 22 .

以上の構成により、実施形態の弁装置は冷凍サイクルシステムに設けられ、一次側継手２１ａの高圧の冷媒が流入し、二次側継手２１ｂから冷媒が流出する。電磁コイル１０に通電がなされていないとき（非通電時）は図１の状態となり、プランジャばね３４の付勢力及びプランジャ３２の自重により、プランジャ３２が吸引子３３から離間した位置となる。このときパイロット弁３２ａがパイロットポート２２ｄを弁閉状態とする。また、プランジャ３２（パイロット弁３２ａ）と共にピストン弁２２が下降して主弁ポート２１ｆを閉状態とし、冷媒の通路は遮断される。このとき、ピストン弁２２の背空間が高圧となり、ピストン弁２２による弁閉状態が確実に保持される。 With the above configuration, the valve device of the embodiment is provided in a refrigeration cycle system, high-pressure refrigerant flows into the primary side joint 21a, and refrigerant flows out of the secondary side joint 21b. When the electromagnetic coil 10 is not energized (during non-energization), the state shown in FIG. At this time, the pilot valve 32a closes the pilot port 22d. Further, the piston valve 22 descends together with the plunger 32 (pilot valve 32a) to close the main valve port 21f, thereby blocking the passage of the refrigerant. At this time, the back space of the piston valve 22 becomes high pressure, and the closed state of the piston valve 22 is reliably maintained.

電磁コイル１０に通電がなされると、吸引子３３とプランジャ３２との間に吸引力が発生してプランジャ３２が上昇し、パイロット弁３２ａがパイロットポート２２ｄから離間する。これにより、ピストン弁２２の背空間が二次側継手２１ｂに導通して低圧となる。これにより、ピストン弁２２の背空間と一次側継手２１ａ内の圧力差によって生じる上昇力と、開弁ばね２２ｃのばね力によりピストン弁２２は主弁ポー２２ｆから離間して弁開状態となり、冷媒が一次側継手２１ａから二次側継手２１ｂに流れる。 When the electromagnetic coil 10 is energized, an attractive force is generated between the attractor 33 and the plunger 32, causing the plunger 32 to rise and the pilot valve 32a to separate from the pilot port 22d. As a result, the back space of the piston valve 22 is communicated with the secondary side joint 21b and the pressure becomes low. As a result, the piston valve 22 is separated from the main valve port 22f by the rising force generated by the pressure difference between the back space of the piston valve 22 and the primary side joint 21a and the spring force of the valve opening spring 22c, thereby opening the refrigerant. flows from the primary side joint 21a to the secondary side joint 21b.

図２は第１実施形態における電磁コイル１０の弁本体部２０への取り付け前の状態を示す要部拡大断面図、図３は第１実施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。図２に示すように、スペーサ部材５の外周の径は、作動部挿通孔１３Ａの内径よりも大きくなっている。そして、作動部挿通孔１３Ａとスペーサ嵌合孔１３Ｂとの段差部は、円環状の平面を構成する当接部１３１とされており、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材４の下端面の外周部４１が当接部１３１に当接可能となっている。すなわち、当接部１３１から外函１１の基板部１１ａの内面までの距離はスペーサ部材４の高さ（軸線Ｌ方向の長さ）より大きくなっており、外周部４１が当接部１３１に当接している状態で、基板部１１ａの内面とスペーサ部材４の上面との間に隙間を有している。 FIG. 2 is an enlarged cross-sectional view of a main part showing a state before the electromagnetic coil 10 is attached to the valve main body 20 in the first embodiment, and FIG. ) is an enlarged cross-sectional view of a main part showing a state after being attached to the device. As shown in FIG. 2, the diameter of the outer periphery of the spacer member 5 is larger than the inner diameter of the operating portion insertion hole 13A. The stepped portion between the operating portion insertion hole 13A and the spacer fitting hole 13B is a contact portion 131 forming an annular flat surface. The outer peripheral portion 41 of the lower end surface of the spacer member 4 can contact the contact portion 131 . That is, the distance from the contact portion 131 to the inner surface of the substrate portion 11a of the outer case 11 is greater than the height of the spacer member 4 (the length in the direction of the axis L), and the outer peripheral portion 41 contacts the contact portion 131. A gap is provided between the inner surface of the substrate portion 11a and the upper surface of the spacer member 4 in the contact state.

このように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材４は、外函１１の基板部１１ａと作動部挿通孔１３Ａとの間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材４に対して力が加わっても、スペーサ部材４が当接部１３１（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 As described above, before the electromagnetic coil 10 is attached to the working portion 3, the spacer member 4 is positioned between the base plate portion 11a of the outer case 11 and the working portion insertion hole 13A. It is loosely fitted so that it can move in any direction. Therefore, for example, even if force is applied to the spacer member 4 from the substrate portion 11a side of the outer case 11, the spacer member 4 does not press the contact portion 131 (bobbin 13b), and the bobbin 13b is not damaged. can be prevented.

そして、スペーサ部材４が当接部１３１に当接することで、スペーサ部材４は作動部挿通孔１３Ａ内に挿通されることがなく、このスペーサ部材４の作動部挿通孔１３Ａからの基板部１１ａとは反対側への抜けが阻止される。このように、スペーサ部材４の外周部４１と当接部１３１は「抜け止め構造」となっている。また、図３のように電磁コイル１０を弁本体部２０に取り付けた状態では、吸引子３３がスペーサ部材４の下面に当接されるとともにスペーサ部材４の上面が基板部１１ａの内面に当接される。これにより、スペーサ部材４は基板部１１ａと吸引子３３とを磁気的に接続する。ここで、スペーサ部材４は、外函１１の基板部１１ａに接触する外函側結合面４Ａと吸引子３３に接触する吸引子側結合面４Ｂとを有している。また、吸引子側結合面４Ｂは、この吸引子側結合面４Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面４Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。このような構造となっていることにより、スペーサ部材４の外函側結合面４Ａが広いのでスペーサ部材４と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 Since the spacer member 4 abuts against the abutting portion 131, the spacer member 4 is not inserted into the operating portion insertion hole 13A. is prevented from exiting to the opposite side. In this manner, the outer peripheral portion 41 of the spacer member 4 and the contact portion 131 have a "retaining structure". When the electromagnetic coil 10 is attached to the valve body 20 as shown in FIG. 3, the attractor 33 is brought into contact with the lower surface of the spacer member 4 and the upper surface of the spacer member 4 is brought into contact with the inner surface of the substrate portion 11a. be done. Thereby, the spacer member 4 magnetically connects the substrate portion 11 a and the attractor 33 . Here, the spacer member 4 has an outer case-side coupling surface 4A that contacts the base plate portion 11a of the outer case 11 and a suction element-side coupling surface 4B that contacts the suction element 33. As shown in FIG. Further, the attractor-side coupling surface 4B contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 4B. Furthermore, the outer box-side connecting surface 4A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the attractor 33. As shown in FIG. With such a structure, the coupling surface 4A on the outer case side of the spacer member 4 is wide, so that the magnetic path area between the spacer member 4 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved. improves.

図４は第２実施形態における電磁コイル１０の弁本体部２０への取り付け前の状態を示す要部拡大断面図、図５は第２実施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。以下の第２実施形態乃至第６実施形態において、第１実施形態と異なる点は主に「抜け止め構造」であり、スペーサ部材の周囲の構造を説明する。その他の構成は第１実施形態と同様であり、各実施形態の図面における第１実施形態と同様な部材には、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とともに、第１実施形態の説明を適宜援用する。 FIG. 4 is an enlarged cross-sectional view of essential parts showing a state before the electromagnetic coil 10 is attached to the valve main body 20 in the second embodiment, and FIG. ) is an enlarged cross-sectional view of a main part showing a state after being attached to the device. In the following second to sixth embodiments, the main difference from the first embodiment is the "retaining structure", and the structure around the spacer member will be described. Other configurations are the same as those of the first embodiment, and members similar to those of the first embodiment in the drawings of each embodiment are denoted by the same reference numerals as in FIGS. , the description of the first embodiment is incorporated as appropriate.

図５の第２実施形態では、第１実施形態のスペーサ嵌合孔１３Ｂを無くして作動部挿通孔１３Ａを外函１１の基板部１１ａ側まで延設したものである。また、スペーサ部材５において、外函１１の基板部１１ａに対向する端部の外周に鍔部５１が形成され、スペーサ部材５の一部（殆ど全部）が作動部挿通孔１３Ａ内に挿通されている。また、作動部挿通孔１３Ａの基板部１１ａ側の開口周囲部にはすり鉢状のテーパ部１３２が形成され、スペーサ部材５の鍔部５１がこのテーパ部１３２に対向するように配置されている。そして、鍔部５１の外周の径は作動部挿通孔１３Ａの内径より大きくなっている。 In the second embodiment shown in FIG. 5, the spacer fitting hole 13B of the first embodiment is eliminated and the operating portion insertion hole 13A is extended to the substrate portion 11a side of the outer case 11. In the second embodiment shown in FIG. In the spacer member 5, a collar portion 51 is formed on the outer periphery of the end portion of the outer case 11 facing the base plate portion 11a, and a portion (almost all) of the spacer member 5 is inserted into the operating portion insertion hole 13A. there is A mortar-shaped tapered portion 132 is formed around the opening of the operating portion insertion hole 13A on the substrate portion 11a side, and the flange portion 51 of the spacer member 5 is arranged to face the tapered portion 132 . The diameter of the outer periphery of the collar portion 51 is larger than the inner diameter of the operating portion insertion hole 13A.

このように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材５の鍔部５１は、外函１１の基板部１１ａと作動部挿通孔１３Ａ（あるいはテーパ部１３２）との間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材５に対して力が加わっても、スペーサ部材５の鍔部５１がテーパ部１３２（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 As described above, before the electromagnetic coil 10 is attached to the operating portion 3, the flange portion 51 of the spacer member 5 is located between the base portion 11a of the outer case 11 and the operating portion insertion hole 13A (or the tapered portion 132). , and is loosely fitted so as to be movable in the direction of the axis L of the operating portion insertion hole 13A. Therefore, for example, even if force is applied to the spacer member 5 from the side of the substrate portion 11a of the outer case 11, the flange portion 51 of the spacer member 5 does not press the tapered portion 132 (bobbin 13b), and the bobbin 13b does not press. Damage etc. can be prevented.

また、上記の構成により、スペーサ部材５の鍔部５１がテーパ部１３２（開口周囲部）に当接可能となっている。したがって、電磁コイル１０の作動部３への取り付け前の状態でも、スペーサ部材５の作動部挿通孔１３Ａからの基板部１１ａとは反対側への抜けが阻止される。このように、スペーサ部材５の鍔部５１とテーパ部１３２は「抜け止め構造」となっている。また、図５のように電磁コイル１０を弁本体部２０に取り付けた状態では、吸引子３３がスペーサ部材５の下面に当接されるとともにスペーサ部材５の上面が基板部１１ａの内面に当接される。これにより、スペーサ部材５は基板部１１ａと吸引子３３とを磁気的に接続する。この第２実施形態でも、スペーサ部材５は基板部１１ａに接触する外函側結合面５Ａと吸引子３３に接触する吸引子側結合面５Ｂとを有し、吸引子側結合面５Ｂは、この吸引子側結合面５Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面５Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。したがって、スペーサ部材５の外函側結合面５Ａが広いのでスペーサ部材５と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 In addition, the above configuration allows the flange portion 51 of the spacer member 5 to come into contact with the tapered portion 132 (opening peripheral portion). Therefore, even before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 5 is prevented from coming off from the operating portion insertion hole 13A to the side opposite to the substrate portion 11a. Thus, the flange portion 51 and the tapered portion 132 of the spacer member 5 have a "retaining structure". When the electromagnetic coil 10 is attached to the valve body 20 as shown in FIG. 5, the attractor 33 is brought into contact with the lower surface of the spacer member 5 and the upper surface of the spacer member 5 is brought into contact with the inner surface of the substrate portion 11a. be done. Thereby, the spacer member 5 magnetically connects the substrate portion 11 a and the attractor 33 . Also in this second embodiment, the spacer member 5 has an outer case-side coupling surface 5A that contacts the substrate portion 11a and an attractor-side coupling surface 5B that contacts the attractor 33, and the attractor-side coupling surface 5B is It contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 5B. Furthermore, the outer box-side joint surface 5A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the attractor 33 . Therefore, since the outer case side coupling surface 5A of the spacer member 5 is wide, the magnetic path area between the spacer member 5 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved.

図６は第３実施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。この第３実施形態では、第１実施形態のスペーサ嵌合孔１３Ｂの形状を変形して、作動部挿通孔１３Ａの基板部１１ａ側に作動部挿通孔１３Ａから離れるにしたがって径が拡径するようなテーパ面を有する円錐台形状のスペーサ嵌合孔１３Ｃを形成したものである。また、スペーサ部材６をこのスペーサ嵌合孔１３Ｃに整合する円錐台形状としたものである。すなわち、スペーサ部材６の外周６１の外径は、基板部１１ａ側にかけて作動部挿通孔１３Ａの内径より大きくなっている。 FIG. 6 is an enlarged cross-sectional view of a main part showing a state after the electromagnetic coil 10 is attached to the operating portion 3 (valve body portion 20) in the third embodiment. In the third embodiment, the shape of the spacer fitting hole 13B of the first embodiment is modified so that the diameter increases toward the base plate portion 11a side of the working portion insertion hole 13A as the distance from the working portion insertion hole 13A increases. A truncated conical spacer fitting hole 13C having a tapered surface is formed. Also, the spacer member 6 has a truncated conical shape matching the spacer fitting hole 13C. That is, the outer diameter of the outer circumference 61 of the spacer member 6 is larger than the inner diameter of the operating portion insertion hole 13A toward the substrate portion 11a side.

このように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材６の外周６１は、外函１１の基板部１１ａと作動部挿通孔１３Ａ（あるいはスペーサ嵌合孔１３Ｃ）との間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材６に対して力が加わっても、スペーサ部材６がスペーサ嵌合孔１３Ｃ（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 As described above, before the electromagnetic coil 10 is attached to the working portion 3, the outer circumference 61 of the spacer member 6 is located between the base plate portion 11a of the outer case 11 and the working portion insertion hole 13A (or the spacer fitting hole 13C). Between, it is loosely fitted so as to be movable in the direction of the axis L of the operating portion insertion hole 13A. Therefore, for example, even if force is applied to the spacer member 6 from the side of the base plate portion 11a of the outer case 11, the spacer member 6 does not press the spacer fitting hole 13C (bobbin 13b), and the bobbin 13b is not damaged. can be prevented.

また、上記の構成により、スペーサ部材６の外周６１がスペーサ嵌合孔１３Ｃの内面に当接可能となっている。したがって、電磁コイル１０の作動部３への取り付け前の状態でも、スペーサ部材６の作動部挿通孔１３Ａからの基板部１１ａとは反対側への抜けが阻止される。このように、スペーサ部材６の外周６１と円錐台形状のスペーサ嵌合孔１３Ｃは「抜け止め構造」となっている。また、図６のように電磁コイル１０を作動部３に取り付けた状態では、吸引子３３がスペーサ部材６の下面に当接されるとともにスペーサ部材６の上面が基板部１１ａの内面に当接される。これにより、スペーサ部材６は基板部１１ａと吸引子３３とを磁気的に接続する。この第３実施形態でも、スペーサ部材６は基板部１１ａに接触する外函側結合面６Ａと吸引子３３に接触する吸引子側結合面６Ｂとを有し、吸引子側結合面６Ｂは、この吸引子側結合面６Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面６Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。したがって、スペーサ部材６の外函側結合面６Ａが広いのでスペーサ部材６と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 In addition, the above configuration allows the outer circumference 61 of the spacer member 6 to come into contact with the inner surface of the spacer fitting hole 13C. Therefore, even before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 6 is prevented from coming out of the operating portion insertion hole 13A to the side opposite to the substrate portion 11a. In this way, the outer circumference 61 of the spacer member 6 and the truncated conical spacer fitting hole 13C form a "retaining structure". When the electromagnetic coil 10 is attached to the operating portion 3 as shown in FIG. 6, the attractor 33 is brought into contact with the lower surface of the spacer member 6 and the upper surface of the spacer member 6 is brought into contact with the inner surface of the substrate portion 11a. be. Thereby, the spacer member 6 magnetically connects the substrate portion 11 a and the attractor 33 . Also in this third embodiment, the spacer member 6 has an outer case-side coupling surface 6A that contacts the base plate portion 11a and a attractor-side coupling surface 6B that contacts the attractor 33. It contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 6B. Furthermore, the outer box-side connecting surface 6A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the attractor 33. As shown in FIG. Therefore, since the outer case side coupling surface 6A of the spacer member 6 is wide, the magnetic path area between the spacer member 6 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved.

図７は第４実施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。この第４実施形態では、第１実施形態のスペーサ嵌合孔１３Ｂの深さを浅くして作動部挿通孔１３Ａの内径より大きな内径のスペーサ嵌合孔１３Ｄを形成し、作動部挿通孔１３Ａとスペーサ嵌合孔１３Ｄとの段差の部分を円環状の平面を構成する当接部１３３としたものである。また、スペーサ部材７は、外函１１の基板部１１ａに対向する端部の外周に作動部挿通孔１３Ａの内径よりも大きな外径の鍔部７１が形成され、この鍔部７１とスペーサ部材７の鍔部７１が形成されていない部分との間に、このスペーサ嵌合孔１３Ｄと作動部挿通孔１３Ａとに整合する段部７ａを有する形状とされたものである。 FIG. 7 is an enlarged cross-sectional view of a main part showing a state after the electromagnetic coil 10 is attached to the operating portion 3 (valve body portion 20) in the fourth embodiment. In the fourth embodiment, the depth of the spacer fitting hole 13B of the first embodiment is made shallower to form a spacer fitting hole 13D having an inner diameter larger than that of the working part insertion hole 13A. A step portion with respect to the spacer fitting hole 13D is used as a contact portion 133 forming an annular flat surface. The spacer member 7 has a collar portion 71 having an outer diameter larger than the inner diameter of the operating portion insertion hole 13A. A stepped portion 7a matching the spacer fitting hole 13D and the operating portion insertion hole 13A is formed between the portion where the flange portion 71 is not formed.

また、図７に示されているように、当接部１３３とスペーサ部材７の段部７ａとの間に間隙が生じていることから判るように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材７の鍔部７１は、外函１１の基板部１１ａと当接部１３３との間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材７に対して力が加わっても、スペーサ部材７が当接部１３３（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 Further, as shown in FIG. 7, a gap is formed between the contact portion 133 and the stepped portion 7a of the spacer member 7. In this state, the flange portion 71 of the spacer member 7 is loosely fitted between the base portion 11a of the outer case 11 and the contact portion 133 so as to be movable in the direction of the axis L of the operating portion insertion hole 13A. Therefore, for example, even if force is applied to the spacer member 7 from the substrate portion 11a side of the outer case 11, the spacer member 7 does not press the contact portion 133 (bobbin 13b), and the bobbin 13b is not damaged. can be prevented.

これにより、スペーサ部材７の一部が作動部挿通孔１３Ａ内に挿通された状態で、電磁コイル１０の作動部３への取り付け前の状態でも、スペーサ部材７の段部７ａが当接部１３３に当接可能となっている。したがって、電磁コイル１０の作動部３への取り付け前の状態でも、スペーサ部材７の作動部挿通孔１３Ａからの基板部１１ａとは反対側への抜けが阻止される。このように、スペーサ部材７の段部７ａと当接部１３３は「抜け止め構造」となっている。また、図７のように電磁コイル１０を作動部３に取り付けた状態では、吸引子３３がスペーサ部材７の下面に当接されるとともにスペーサ部材７の上面が基板部１１ａの内面に当接される。これにより、スペーサ部材７は基板部１１ａと吸引子３３とを磁気的に接続する。この第４実施形態でも、スペーサ部材７は基板部１１ａに接触する外函側結合面７Ａと吸引子３３に接触する吸引子側結合面７Ｂとを有し、吸引子側結合面７Ｂは、この吸引子側結合面７Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面７Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。したがって、スペーサ部材７の外函側結合面７Ａが広いのでスペーサ部材７と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 As a result, even before the electromagnetic coil 10 is attached to the operating portion 3 with a portion of the spacer member 7 inserted into the operating portion insertion hole 13A, the stepped portion 7a of the spacer member 7 is in contact with the contact portion 133. abutment is possible. Therefore, even before the electromagnetic coil 10 is attached to the operating portion 3, the spacer member 7 is prevented from coming out of the operating portion insertion hole 13A to the side opposite to the substrate portion 11a. Thus, the stepped portion 7a of the spacer member 7 and the contact portion 133 have a "retaining structure". When the electromagnetic coil 10 is attached to the operating portion 3 as shown in FIG. 7, the attractor 33 is brought into contact with the lower surface of the spacer member 7 and the upper surface of the spacer member 7 is brought into contact with the inner surface of the substrate portion 11a. be. Thereby, the spacer member 7 magnetically connects the substrate portion 11 a and the attractor 33 . Also in this fourth embodiment, the spacer member 7 has an outer case-side coupling surface 7A that contacts the base plate portion 11a and a attractor-side coupling surface 7B that contacts the attractor 33. It contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 7B. Furthermore, the outer box-side joint surface 7A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the suction element 33 . Therefore, since the outer case side coupling surface 7A of the spacer member 7 is wide, the magnetic path area between the spacer member 7 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved.

図８は第５施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。この第５実施形態では、スペーサ部材８の長さが第１実施形態におけるスペーサ部材４より長くされ、その分だけ外函１１の基板部１１ａ′に凹部１１１が設けられたものである。 FIG. 8 is an enlarged cross-sectional view of a main part showing a state after the electromagnetic coil 10 is attached to the operating portion 3 (valve body portion 20) in the fifth embodiment. In the fifth embodiment, the length of the spacer member 8 is longer than that of the spacer member 4 in the first embodiment, and the base portion 11a' of the outer case 11 is provided with a concave portion 111 corresponding to that length.

そして、第１実施形態と同様に、スペーサ部材８の外周の径は、作動部挿通孔１３Ａの内径よりも大きくなっており、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材８の下端面の外周部８１が当接部１３１に当接可能となっている。また、図８に示されているように、当接部１３１とスペーサ部材８の下端面の外周部８１との間に間隙が生じていることから判るように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材８の下端面の外周部８１は、外函１１の基板部１１ａと作動部挿通孔１３Ａ（当接部１３１）との間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材８に対して力が加わっても、スペーサ部材８が当接部１３３（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 As in the first embodiment, the diameter of the outer circumference of the spacer member 8 is larger than the inner diameter of the working portion insertion hole 13A, and the spacer member 8 can be brought into contact with the contact portion 131 . Further, as shown in FIG. 8, there is a gap between the abutting portion 131 and the outer peripheral portion 81 of the lower end surface of the spacer member 8, so that the electromagnetic coil 10 does not reach the operating portion 3. , the outer peripheral portion 81 of the lower end surface of the spacer member 8 is between the base portion 11a of the outer case 11 and the operating portion insertion hole 13A (abutting portion 131), the axis line of the operating portion insertion hole 13A It is loosely fitted so as to be movable in the L direction. Therefore, for example, even if force is applied to the spacer member 8 from the substrate portion 11a side of the outer case 11, the spacer member 8 does not press the contact portion 133 (bobbin 13b), and the bobbin 13b is not damaged. can be prevented.

そして、スペーサ部材８が当接部１３１に当接することで、スペーサ部材８は作動部挿通孔１３Ａ内に挿通されることがなく、このスペーサ部材８の作動部挿通孔１３Ａからの基板部１１ａ′とは反対側への抜けが阻止される。このように、スペーサ部材８の外周部８１と当接部１３１は「抜け止め構造」となっている。また、図８のように電磁コイル１０を作動部３に取り付けた状態では、吸引子３３がスペーサ部材８の下面に当接されるとともにスペーサ部材８の上面が基板部１１ａ′の凹部１１１の内面に当接される。これにより、スペーサ部材８は基板部１１ａと吸引子３３とを磁気的に接続する。この第５実施形態でも、スペーサ部材８は基板部１１ａに接触する外函側結合面８Ａと吸引子３３に接触する吸引子側結合面８Ｂとを有し、吸引子側結合面８Ｂは、この吸引子側結合面８Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面８Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。したがって、スペーサ部材８の外函側結合面８Ａが広いのでスペーサ部材８と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 Since the spacer member 8 abuts against the abutting portion 131, the spacer member 8 is not inserted into the operating portion insertion hole 13A. is prevented from coming off to the opposite side. Thus, the outer peripheral portion 81 and the contact portion 131 of the spacer member 8 have a "retaining structure". When the electromagnetic coil 10 is attached to the operating portion 3 as shown in FIG. 8, the attractor 33 is brought into contact with the lower surface of the spacer member 8 and the upper surface of the spacer member 8 contacts the inner surface of the concave portion 111 of the substrate portion 11a'. is abutted. Thereby, the spacer member 8 magnetically connects the substrate portion 11 a and the attractor 33 . In this fifth embodiment as well, the spacer member 8 has an outer case-side coupling surface 8A that contacts the base plate portion 11a and an attractor-side coupling surface 8B that contacts the attractor 33, and the attractor-side coupling surface 8B is It contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 8B. Furthermore, the outer box-side joint surface 8A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the attractor 33 . Therefore, since the outer case side coupling surface 8A of the spacer member 8 is wide, the magnetic path area between the spacer member 8 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved.

図９は第６施形態における電磁コイル１０の作動部３（弁本体部２０）への取り付け後の状態を示す要部拡大断面図である。この第６実施形態では、第１実施形態のスペーサ嵌合孔１３Ｂを無くしたものである。また、スペーサ部材９において、外函１１の基板部１１ａに対向する端部の外周に鍔部９１が形成され、スペーサ部材９の一部（殆ど全部）が作動部挿通孔１３Ａ内に挿通され、鍔部９１がボビン１３ｂ′と基板部１１ａとの間において、この鍔部９１が作動部挿通孔１３Ａの基板部１１ａ側の開口周囲部１３４に対向するように配置されている。すなわち、開口周囲部１３４は鍔部９１に対する当接部を構成している。そして、鍔部９１の外周の径は作動部挿通孔１３Ａの内径より大きくなっている。 FIG. 9 is an enlarged cross-sectional view of essential parts showing a state after the electromagnetic coil 10 is attached to the operation portion 3 (valve body portion 20) in the sixth embodiment. In this sixth embodiment, the spacer fitting hole 13B of the first embodiment is eliminated. In the spacer member 9, a flange portion 91 is formed on the outer periphery of the end portion of the outer case 11 facing the substrate portion 11a, and a part (almost all) of the spacer member 9 is inserted into the operating portion insertion hole 13A, A collar portion 91 is disposed between the bobbin 13b' and the substrate portion 11a so as to face the opening peripheral portion 134 of the operating portion insertion hole 13A on the substrate portion 11a side. That is, the opening peripheral portion 134 constitutes a contact portion for the flange portion 91 . The diameter of the outer periphery of the collar portion 91 is larger than the inner diameter of the operating portion insertion hole 13A.

また、図９に示されているように、作動部挿通孔１３Ａの開口周囲部１３４（当接部）とスペーサ部材９の鍔部９１との間に間隙が生じていることから判るように、電磁コイル１０の作動部３への取り付け前の状態では、スペーサ部材９の鍔部９１は、外函１１の基板部１１ａと開口周囲部１３４（当接部）との間で、作動部挿通孔１３Ａの軸線Ｌ方向に移動可能に遊嵌されている。したがって、例えば、外函１１の基板部１１ａ側からスペーサ部材９に対して力が加わっても、スペーサ部材９が開口周囲部１３４（ボビン１３ｂ）を押圧することがなく、ボビン１３ｂの破損等を防止できる。 Further, as shown in FIG. 9, a gap is formed between the opening peripheral portion 134 (abutment portion) of the operating portion insertion hole 13A and the flange portion 91 of the spacer member 9. In the state before the electromagnetic coil 10 is attached to the operating portion 3, the flange portion 91 of the spacer member 9 is positioned between the base portion 11a of the outer case 11 and the opening peripheral portion 134 (abutting portion) so as to form the operating portion insertion hole. It is loosely fitted so as to be movable in the direction of the axis L of 13A. Therefore, for example, even if force is applied to the spacer member 9 from the substrate portion 11a side of the outer case 11, the spacer member 9 does not press the opening peripheral portion 134 (bobbin 13b), and the bobbin 13b is not damaged. can be prevented.

また、上記の構成により、スペーサ部材９の鍔部９１が作動部挿通孔１３Ａの開口周囲部１３４（当接部）に当接可能となっている。これにより、電磁コイル１０の作動部３への取り付け前の状態でも、スペーサ部材９の作動部挿通孔１３Ａからの基板部１１ａとは反対側への抜けが阻止される。このように、スペーサ部材９の鍔部９１と開口周囲部１３４は「抜け止め構造」となっている。また、図９のように電磁コイル１０を作動部３に取り付けた状態では、吸引子３３がスペーサ部材９の下面に当接されるとともにスペーサ部材９の上面が基板部１１ａの内面に当接される。これにより、スペーサ部材９は基板部１１ａと吸引子３３とを磁気的に接続する。この第６実施形態でも、スペーサ部材９は基板部１１ａに接触する外函側結合面９Ａと吸引子３３に接触する吸引子側結合面９Ｂとを有し、吸引子側結合面９Ｂは、この吸引子側結合面９Ｂに対向する吸引子３３のスペーサ側平面３３Ａの全面に接触する。さらに、外函側結合面９Ａは吸引子３３のスペーサ側平面３３Ａ（対向する面）の全面より広い面積で基板部１１ａに接触している。したがって、スペーサ部材９の外函側結合面９Ａが広いのでスペーサ部材９と外函１１（基板部１１ａ）との間の磁路面積を広くでき、磁気効率が向上する。 Also, with the above configuration, the flange portion 91 of the spacer member 9 can come into contact with the opening surrounding portion 134 (contact portion) of the operating portion insertion hole 13A. As a result, even before the electromagnetic coil 10 is attached to the working portion 3, the spacer member 9 is prevented from slipping out of the working portion insertion hole 13A to the side opposite to the substrate portion 11a. Thus, the flange portion 91 of the spacer member 9 and the opening peripheral portion 134 have a "retaining structure". When the electromagnetic coil 10 is attached to the operating portion 3 as shown in FIG. 9, the attractor 33 is brought into contact with the lower surface of the spacer member 9 and the upper surface of the spacer member 9 is brought into contact with the inner surface of the substrate portion 11a. be. Thereby, the spacer member 9 magnetically connects the substrate portion 11 a and the attractor 33 . Also in this sixth embodiment, the spacer member 9 has an outer case-side coupling surface 9A that contacts the base plate portion 11a and a attractor-side coupling surface 9B that contacts the attractor 33, and the attractor-side coupling surface 9B is It contacts the entire surface of the spacer-side flat surface 33A of the attractor 33 facing the attractor-side coupling surface 9B. Furthermore, the outer box-side connecting surface 9A is in contact with the substrate portion 11a over a wider area than the entire surface of the spacer-side flat surface 33A (opposing surface) of the attractor 33. As shown in FIG. Therefore, since the outer case side coupling surface 9A of the spacer member 9 is wide, the magnetic path area between the spacer member 9 and the outer case 11 (substrate portion 11a) can be widened, and the magnetic efficiency is improved.

以上のように、本発明によれば、スペーサ部材が作動部挿通孔から抜け出ないので、スペーサ部材の脱落による紛失等を防止することができる。また、弁本体部を共通化しながら、大型の電磁コイルを小型の弁本体部に取り付けることができる。例えば、ＤＣ駆動用の電磁コイルはＡＣ駆動用の電磁コイルと比較して大型になるので、本発明のように磁性体からなるスペーサ部材を用いることにより、ＡＣ駆動とＤＣ駆動の両方に弁本体部を共通化することができる。 As described above, according to the present invention, the spacer member does not slip out of the operating portion insertion hole, so it is possible to prevent the loss of the spacer member due to falling off. In addition, a large electromagnetic coil can be attached to a small valve body while sharing the valve body. For example, an electromagnetic coil for DC drive is larger than an electromagnetic coil for AC drive. parts can be shared.

なお、以上の各実施形態に限らず、抜け止め構造はスペーサ部材が作動部挿通孔に係止される構造であればよい。例えば、本実施の形態においては、スペーサ部材は略円柱状のものとしたが、三角柱や四角柱等の角柱であってもよい。また、鍔部５１，７１，９１は全周に形成しなくてもよく、周囲の一部に形成されたものでもよい。 It should be noted that the retainer structure is not limited to the above-described embodiments, and may be any structure as long as the spacer member is engaged with the operating portion insertion hole. For example, in the present embodiment, the spacer member has a substantially cylindrical shape, but it may be a prism such as a triangular prism or a square prism. Also, the flanges 51, 71, 91 may not be formed on the entire circumference, and may be formed on a part of the circumference.

本発明の電磁コイルは、筒状のプランジャケース内にプランジャが内挿されるとともに該プランジャケースの端部に吸引子が固定されてなる作動部を有し、前記作動部の前記プランジャに連動して弁体を作動させる弁本体部に対して電磁コイルが装着される弁装置に適用される。以上の各実施形態においては、弁装置が一次側継手、二次側継手をそれぞれ一つづつ有する電磁弁である場合を例に説明したが、例えば複数の二次側継手に対して選択的に流体を流す流路切換弁などの弁装置であってもよい。 The electromagnetic coil of the present invention has an operating portion in which a plunger is inserted in a cylindrical plunger case and an attractor is fixed to the end of the plunger case. The present invention is applied to a valve device in which an electromagnetic coil is attached to a valve main body that operates a valve body. In each of the above embodiments, the valve device is an electromagnetic valve having one primary side joint and one secondary side joint. It may be a valve device such as a channel switching valve for flowing a fluid.

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 above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are made within the scope of the present invention. is included in the present invention.

１０ 電磁コイル
１１ 外函
１１ａ 基板部
１２ 固定板
１３ モールドコイル
１３Ａ 作動部挿通孔
１３Ｂ スペーサ嵌合孔
１３Ｃ スペーサ嵌合孔
１３Ｄ スペーサ嵌合孔
１３ａ モールド樹脂
１３ｂ ボビン
１３ｃ コイル
１３１ 当接部（抜け止め構造）
２０ 弁本体部
２１ 弁ハウジング
２１Ａ 継手部
２１Ｂ シリンダ部
２１ａ 一次側継手
２１ｂ 二次側継手
２１ｃ ホルダ部
２２ ピストン弁
３ 作動部
３１ プランジャチューブ
３２ プランジャ
３２ａ パイロット弁
３３ 吸引子
３３Ａ スペーサ側平面
３４ プランジャばね
４ スペーサ部材
４１ 外周部（抜け止め構造）
４Ａ 外函側結合面
４Ｂ 吸引子側結合面
５ スペーサ部材
５１ 鍔部（抜け止め構造）
５Ａ 外函側結合面
５Ｂ 吸引子側結合面
１３２ テーパ部（開口周囲部、抜け止め構造）
１３Ｃ スペーサ嵌合孔（抜け止め構造）
６ スペーサ部材
６１ 外周（抜け止め構造）
６Ａ 外函側結合面
６Ｂ 吸引子側結合面
１３Ｄ スペーサ嵌合孔
１３３ 当接部（抜け止め構造）
７ スペーサ部材
７１ 鍔部
７Ａ 外函側結合面
７Ｂ 吸引子側結合面
７ａ 段部（抜け止め構造）
１１ａ′ 基板部
１１１ 凹部
８ スペーサ部材
８１ 外周部（抜け止め構造）
８Ａ 外函側結合面
８Ｂ 吸引子側結合面
１３ｂ′ ボビン
１３４ 開口周囲部（抜け止め構造）
９ スペーサ部材
９１ 鍔部（抜け止め構造）
９Ａ 外函側結合面
９Ｂ 吸引子側結合面
Ｌ 軸線 10 electromagnetic coil 11 outer case 11a substrate portion 12 fixed plate 13 molded coil 13A operating portion insertion hole 13B spacer fitting hole 13C spacer fitting hole 13D spacer fitting hole 13a molded resin 13b bobbin 13c coil 131 contact portion (retaining structure )
20 Valve body 21 Valve housing 21A Joint 21B Cylinder 21a Primary joint 21b Secondary joint 21c Holder 22 Piston valve 3 Actuator 31 Plunger tube 32 Plunger 32a Pilot valve 33 Suction element 33A Spacer side plane 34 Plunger spring 4 Outer periphery of spacer member 41 (prevention structure)
4A Outer casing side coupling surface 4B Suction element side coupling surface 5 Spacer member 51 Flange (retaining structure)
5A Outer case side coupling surface 5B Suction element side coupling surface 132 Tapered portion (periphery of opening, retaining structure)
13C spacer fitting hole (retaining structure)
6 spacer member 61 outer circumference (retaining structure)
6A Outer casing side coupling surface 6B Attractor side coupling surface 13D Spacer fitting hole 133 Abutting portion (retaining structure)
7 Spacer member 71 Collar portion 7A Outer box side coupling surface 7B Suction element side coupling surface 7a Stepped portion (retaining structure)
11a′ substrate portion 111 recessed portion 8 spacer member 81 outer peripheral portion (retaining structure)
8A Outer box side coupling surface 8B Suction element side coupling surface 13b' Bobbin 134 Opening peripheral portion (retaining structure)
9 Spacer member 91 Flange (retaining structure)
9A Outer box side coupling surface 9B Attractor side coupling surface L Axis line

Claims (8)

筒状のプランジャケース内にプランジャが内挿されるとともに該プランジャケースの端部に吸引子が固定されてなる作動部を有し、前記作動部の前記プランジャに連動して弁体を作動させる弁本体部に対して装着される電磁コイルであって、
前記作動部を挿通させる作動部挿通孔が形成されたモールドコイルと、前記モールドコイルの前記作動部挿通孔と軸線方向に対向する基板部を有する磁性体からなる外函と、前記作動部の前記吸引子と前記外函の前記基板部との間で該吸引子と該基板部とを磁気的に接続するスペーサ部材とを備え、
前記モールドコイルの前記作動部挿通孔からの前記スペーサ部材の前記基板部とは反対側への抜けを阻止する抜け止め構造を備えたことを特徴とする電磁コイル。 A valve body having an operating portion in which a plunger is inserted in a cylindrical plunger case and a suction element is fixed to the end of the plunger case, and operates a valve body in conjunction with the plunger of the operating portion. An electromagnetic coil attached to the part,
a molded coil formed with an operating portion insertion hole through which the operating portion is inserted ; an outer case made of a magnetic material having a substrate portion axially facing the operating portion insertion hole of the molded coil; A spacer member that magnetically connects the attractor and the substrate portion between the attractor and the substrate portion of the outer case,
An electromagnetic coil, comprising a retaining structure for preventing the spacer member from coming off from the operating portion insertion hole of the molded coil to the side opposite to the substrate portion. 前記スペーサ部材の少なくとも一部が前記作動部挿通孔の内径よりも大きな外径を有し、この大きな外径の部分が前記抜け止め構造の一部を構成していることを特徴とする請求項１に記載の電磁コイル。 3. A portion of said spacer member having an outer diameter larger than an inner diameter of said operating portion insertion hole, and said portion having a larger outer diameter constitutes a part of said retaining structure. 2. The electromagnetic coil according to 1. 前記作動部への取り付け前の状態で、前記スペーサ部材の前記抜け止め構造の一部を構成する前記一部が、前記外函の前記基板部と前記作動部挿通孔との間で、前記作動部挿通孔の軸線方向に移動可能に遊嵌されていることを特徴とする請求項２に記載の電磁コイル。 Before being attached to the operating portion, the portion of the spacer member that constitutes a part of the retaining structure is positioned between the base portion of the outer case and the operating portion insertion hole. 3. The electromagnetic coil according to claim 2, wherein the electromagnetic coil is loosely fitted so as to be movable in the axial direction of the through hole. 前記スペーサ部材は、前記外函の前記基板部に接触する外函側結合面と前記吸引子に接触する吸引子側結合面とを有し、前記吸引子側結合面は前記吸引子の当該吸引子側結合面に対向する面の全面に接触するとともに、前記外函側結合面は該対向する面の全面より広い面積で前記基板部に接触するよう構成されていることを特徴とする請求項１乃至３のいずれか一項に記載の電磁コイル。 The spacer member has an outer case-side coupling surface that contacts the base plate portion of the outer case and a suction element-side coupling surface that contacts the suction element, and the suction element-side connection surface is the suction element of the suction element. 2. The outer case side connecting surface is configured to contact the substrate portion over a wider area than the entire surface facing the child side connecting surface while contacting the entire surface facing the child side connecting surface. 4. The electromagnetic coil according to any one of 1 to 3. 前記作動部挿通孔の前記基板部側に該作動部挿通孔より大きな内径を有するスペーサ嵌合孔を有し、前記スペーサ部材が前記スペーサ嵌合孔に嵌合され、前記作動部挿通孔と前記スペーサ嵌合孔との段差部に対して、前記スペーサ部材の端部が当接することで前記抜け止め構造が構成されていることを特徴とする請求項１乃至４のいずれか一項に記載の電磁コイル。 A spacer fitting hole having an inner diameter larger than that of the working part insertion hole is provided on the substrate part side of the working part insertion hole. 5. The retaining structure according to any one of claims 1 to 4, wherein the end of the spacer member abuts against a stepped portion between the spacer fitting hole and the retaining structure. electromagnetic coil. 前記スペーサ部材の外周に前記作動部挿通孔より径の大きな鍔部が形成され、前記作動部挿通孔の前記基板部側の開口周囲部に前記鍔部が当接することで前記抜け止め構造が構成されていることを特徴とする請求項１乃至４のいずれか一項に記載の電磁コイル。 A collar portion having a diameter larger than that of the operating portion insertion hole is formed on the outer periphery of the spacer member, and the retaining structure is configured by contacting the collar portion with a peripheral portion of the opening of the operating portion insertion hole on the side of the substrate portion. 5. The electromagnetic coil according to any one of claims 1 to 4, wherein the coil is 前記作動部挿通孔の前記基板部側に該作動部挿通孔から離れるにしたがって径が拡径するようなテーパ面を有するスペーサ嵌合孔を有し、前記スペーサ部材が前記スペーサ嵌合孔に嵌合され、前記スペーサ部材の外周面と前記テーパ面とが当接することで前記抜け止め構造が構成されていることを特徴とする請求項１乃至４のいずれか一項に記載の電磁コイル。 A spacer fitting hole having a tapered surface whose diameter increases with increasing distance from the working part insertion hole is provided on the substrate part side of the working part insertion hole, and the spacer member fits into the spacer fitting hole. 5. The electromagnetic coil according to any one of claims 1 to 4, wherein the retainer structure is formed by abutment between the outer peripheral surface of the spacer member and the tapered surface. 前記弁本体部の前記作動部に対して、請求項１乃至７の何れか一項に記載の電磁コイルを備えたことを特徴とする弁装置。 A valve device comprising the electromagnetic coil according to any one of claims 1 to 7 for the operating portion of the valve body.
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