JP4977314B2 - Electromagnetic devices such as solenoid valves and solenoid valves - Google Patents

Electromagnetic devices such as solenoid valves and solenoid valves Download PDF

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JP4977314B2
JP4977314B2 JP2004335931A JP2004335931A JP4977314B2 JP 4977314 B2 JP4977314 B2 JP 4977314B2 JP 2004335931 A JP2004335931 A JP 2004335931A JP 2004335931 A JP2004335931 A JP 2004335931A JP 4977314 B2 JP4977314 B2 JP 4977314B2
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valve
coil
mold
housing
diameter portion
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JP2006147853A (en
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仁志 木船
正幸 今井
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Fujikoki Corp
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Description

本発明は、空気調和機に使用する電磁弁等に装備される電磁石装置及び電磁弁に関する。 The present invention relates to an electromagnet device and an electromagnetic valve provided in an electromagnetic valve or the like used for an air conditioner.

例えば、下記の特許文献１は、パイプ状の弁本体内に吸引子を固定し、弁本体の外側に取付けるコイルユニットの磁力によりプランジャを吸引して、プランジャと一体の弁体を弁座に当接して閉弁を行う通電時閉型の電磁弁を開示している。
特開２００３−１５６２６９号公報 For example, in Patent Document 1 below, an attractor is fixed in a pipe-shaped valve body, the plunger is attracted by the magnetic force of a coil unit attached to the outside of the valve body, and the valve body integrated with the plunger is applied to the valve seat. An energized closed solenoid valve that closes in contact is disclosed.
JP 2003-156269 A

空気調和機に使用する電磁弁等に装備される電磁石装置は、湿度の高い環境下で使用されるので、電磁コイルを樹脂で一体にモールドして防湿処理を行っている。
このモールド処理は、金型内にコイルを収容し、金型内に樹脂を注入してモールドを成型する。
この際に、金型に樹脂を注入するゲート（注入口）に残る樹脂が、成型されたコイルモールドの外表面にゲート跡として残ってしまう。 Since the electromagnet device equipped in an electromagnetic valve or the like used in an air conditioner is used in a high humidity environment, the electromagnetic coil is integrally molded with a resin to perform moistureproof treatment.
In this molding process, a coil is accommodated in a mold, and resin is injected into the mold to mold the mold.
At this time, the resin remaining in the gate (injection port) for injecting resin into the mold remains as a gate mark on the outer surface of the molded coil mold.

このゲート跡は、このコイルモールドには不要のものであるが、そのままにしておくと、その突部の分だけコイルモールドを収容するハウジングとの間の間隙をとる必要があり、電磁弁の小型化の阻害要因となる。
そのため通常は、このゲート跡を除去することを行なうのであるが、このようなゲート跡の除去には新たな工数を必要とすることになる。
本発明の目的は、上述した問題を解決し、かつ、組立性の良い電磁弁等の電磁石装置を提供するものである。 This trace of the gate is unnecessary for this coil mold, but if it is left as it is, it is necessary to leave a gap between the projection and the housing that houses the coil mold, and the small size of the solenoid valve It becomes a hindrance factor.
Therefore typically, although carried out to remove the gate mark would require a new man-hours for the removal of such gate mark.
An object of the present invention is to solve the above-described problems and to provide an electromagnet device such as an electromagnetic valve with good assemblability .

本発明の電磁弁等の電磁石装置は、ボビンに巻いた電磁コイルを金型内で樹脂と一緒にモールドしたコイルモールドと、該コイルモールドを収容する金属製のハウジングとを備え、該ハウジングは、前記コイルモールドの外側に残留するモールド時のゲート跡を収容する開口部又は凹部を有しており、前記コイルモールドは、そのゲート跡を前記開口部又は凹部に係合することにより前記ハウジングに対して位置決めされることを特徴としている。 An electromagnet device such as an electromagnetic valve according to the present invention includes a coil mold obtained by molding an electromagnetic coil wound around a bobbin together with a resin in a mold, and a metal housing that houses the coil mold. The coil mold has an opening or a recess that accommodates a gate mark remaining on the outside of the coil mold, and the coil mold engages the gate mark with the opening or the recess so that the housing can be separated from the housing. It is characterized by being positioned .

また、本発明の電磁弁は、端部が開口する大径部及び有底の小径部を有する弁本体と、該弁本体の大径部の開口部を封止する弁座部材と、該弁座部材の弁シートを開閉する弁部を有する弁棒と、前記弁本体の小径部の内側に固定される吸引子と、該吸引子を貫通する弁棒に一体に取付けられるプランジャと、前記吸引子及びプランジャ間に配設されて前記プランジャを前記吸引子から引き離す方向に付勢するスプリングと、前記弁本体の小径部外側に嵌装される電磁石装置とを備えてなる電磁弁であって、前記電磁石装置は、前記弁本体小径部の嵌装孔を有するボビンに巻いた電磁コイルを金型内で樹脂と一体にモールドしたコイルモールドと、該コイルモールドを収容する上壁部、下壁部及び側壁部を含むコ字状金属製のハウジングとからなるコイルユニットで構成されており、前記ハウジングの上壁部及び下壁部には、前記弁本体小径部の嵌装孔が、また、前記ハウジングの側壁部には、前記コイルモールドの外側に残留するモールド時のゲート跡を収容する開口部又は凹部がそれぞれ形成されるとともに、前記コイルモールドは、そのゲート跡を前記ハウジングの開口部又は凹部に係合することにより前記ハウジングに対して位置決めされることを特徴としている。 The solenoid valve of the present invention includes a valve main body having a large diameter portion with an open end and a bottomed small diameter portion, a valve seat member for sealing the large diameter opening of the valve main body, and the valve A valve stem having a valve portion for opening and closing the valve seat of the seat member; a suction element fixed to the inside of the small diameter portion of the valve body; a plunger attached integrally to the valve stem passing through the suction element; An electromagnetic valve comprising: a spring disposed between a child and a plunger that urges the plunger in a direction to separate the plunger from the attractor; and an electromagnet device fitted on the outer side of the small diameter portion of the valve body , The electromagnet device includes a coil mold obtained by integrally molding an electromagnetic coil wound around a bobbin having a fitting hole of the small diameter portion of the valve main body with a resin in a mold, and an upper wall portion and a lower wall portion that accommodate the coil mold. and from a U-shaped metallic housing including a side wall portion That consists of a coil unit, the upper wall portion and the lower wall portion of the housing, fitting hole of the valve body small diameter portion, also in the side wall of the housing, remaining outside of the coil mold Each of the coil molds is positioned with respect to the housing by engaging the gate marks with the openings or recesses of the housing. It is characterized by that.

また、前記ハウジング上壁部の上面に、前記コイルユニットを前記弁本体の小径部に嵌装したときに、この小径部上端の凹部に弾性係合するストッパ部材を設けたことをもって発明のもう一つの特徴とするものである。Further, when the coil unit is fitted to the small diameter portion of the valve body on the upper surface of the upper wall portion of the housing, a stopper member that elastically engages with the concave portion at the upper end of the small diameter portion is provided. It has one feature.

コイルモールドは、電磁コイルを湿気から保護するために不可欠なものである。本発明によれば、このモールド時に発生するゲート跡を積極的に利用して、製造コストの低減と小型化を達成することができる。 The coil mold is indispensable for protecting the electromagnetic coil from moisture. According to the present invention, it is possible to reduce the manufacturing cost and reduce the size by actively utilizing the gate trace generated at the time of molding.

図１は、本発明の電磁弁の正面断面図、図２は、図１の左側面図である。
全体を符号１で示す電磁弁は、非磁性材の金属パイプをプレス加工して作成される弁本体１０を有する。
弁本体１０の開口部端側は大径部に形成されており、開口端に弁座部材２０が固着される。弁座部材２０は弁シート２２を有し、第１の配管３０が取付けられる。弁本体１０の大径部内には弁室４０が形成され、第２の配管３２が取付けられる。 FIG. 1 is a front sectional view of the electromagnetic valve of the present invention, and FIG. 2 is a left side view of FIG.
The electromagnetic valve generally indicated by reference numeral 1 has a valve body 10 that is formed by pressing a non-magnetic metal pipe.
The opening end side of the valve body 10 is formed in a large diameter portion, and the valve seat member 20 is fixed to the opening end. The valve seat member 20 has a valve seat 22 to which a first pipe 30 is attached. A valve chamber 40 is formed in the large diameter portion of the valve body 10 and a second pipe 32 is attached.

弁本体１０は、弁室４０よりも上部の部分が小径の円筒部１２に形成される。この円筒部１２の外周部には、コイルユニット１００が嵌装される。コイルユニット１００は、ボビン１１０を巻き付けられた電磁コイル１２０を有する。電磁コイルは配線１２２を介して給電を受ける。   The valve body 10 is formed in a cylindrical portion 12 having a smaller diameter than the valve chamber 40. A coil unit 100 is fitted on the outer periphery of the cylindrical portion 12. The coil unit 100 includes an electromagnetic coil 120 around which a bobbin 110 is wound. The electromagnetic coil is supplied with power via the wiring 122.

電気機器である電磁コイル１２０、ボビン１１０、配線１２２等は、金型内で樹脂と一体に成型され、コイルモールド１３０に形成される。このコイルモールド１３０は、電気部品を樹脂内に封止して、結露等から保護する。
このコイルのモールド加工用金型は、樹脂を射出するためのゲートを有する。このゲート部の樹脂は成型されたコイルモールド１３０の外側にいわゆるゲート跡１３２として突出残留する。 The electromagnetic coil 120, the bobbin 110, the wiring 122, and the like, which are electrical devices, are formed integrally with the resin in the mold and formed in the coil mold 130. The coil mold 130 seals electrical components in resin and protects them from dew condensation.
This mold for molding a coil has a gate for injecting resin. The resin of the gate portion protrudes and remains as a so-called gate mark 132 on the outside of the molded coil mold 130.

このゲート跡１３２は、コイルモールド１３０の機能には影響を与えないので、切除してコイルモールドの外形寸法等の増大を防止することが望ましい。しかしながら、このゲート跡１３２の切除には、工数を要し、コストアップの原因となる。
そこで、本発明の電磁弁にあっては、モールド用の金型に設けるゲート位置を規制して、コイルモールド１３０の所定位置にゲート跡１３２が形成されるように設計する。 Since this gate mark 132 does not affect the function of the coil mold 130, it is desirable to cut it out to prevent an increase in the outer dimensions and the like of the coil mold. However, the removal of the gate trace 132 requires man-hours and causes an increase in cost.
Therefore, the electromagnetic valve of the present invention is designed so that the gate mark 132 is formed at a predetermined position of the coil mold 130 by restricting the gate position provided in the mold for molding.

コイルモールド１３０は、図１及び図２に示されるように、小径円筒部１２の嵌装孔１５０ｄを有する上壁部１５０ａ及び下壁部１５０ｂと、これら上下両壁部をつなぐ側壁部１５０ｃとでコイルモールド収容室を形成するようにした図１を紙面の裏側からみた場合における図２の中心線に沿う中央垂直断面がコ字状を呈する金属製のハウジング（以下、「上壁部、下壁部及び側壁部を含むコ字状金属製のハウジング」と略記する）１５０内に組込まれる。ハウジング１５０における上壁部１５０ａの上面には、弾性材でつくられたストッパ部材１６０が取付けられる。
このストッパ部材１６０は、コイルユニット１００を弁本体１０の小径円筒部１２の外周部に嵌装したときに、ストッパ部材１６０の先端が、弁本体１０の凹部１４に弾性係合してコイルユニットを固定する機能を有する。 As shown in FIGS. 1 and 2 , the coil mold 130 includes an upper wall portion 150a and a lower wall portion 150b having fitting holes 150d for the small diameter cylindrical portion 12, and a side wall portion 150c that connects the upper and lower wall portions. A metal housing (hereinafter referred to as “ upper wall portion, lower wall ”) in which the central vertical section along the center line of FIG. 2 when viewed from the back side of FIG. 150 is abbreviated as a “ U-shaped metal housing including a wall portion and a side wall portion ”) . On the upper surface of the upper wall portion 150a of the housing 150, the stopper member 160 made of elastic material is attached.
When the coil unit 100 is fitted on the outer peripheral portion of the small diameter cylindrical portion 12 of the valve body 10, the stopper member 160 is elastically engaged with the recess 14 of the valve body 10 so that the coil unit Has the function of fixing.

ハウジング１５０には、図１の長円で囲った部分を拡大して示すように、矩形の開口部１５２が設けてある。コイルモールド１３０のゲート跡１３２は、このハウジング１５０の開口部１５２に受け入れられる。
この構造により、コイルモールド１３０はハウジング１５０に対して廻り止めされる。また、ゲート跡１３２によるコイルユニット１００の寸法の増大も回避することもできる。 The housing 150 is provided with a rectangular opening 152 so as to enlarge and show the part surrounded by the ellipse in FIG. The gate mark 132 of the coil mold 130 is received in the opening 152 of the housing 150.
With this structure, the coil mold 130 is prevented from rotating with respect to the housing 150. Further, an increase in the size of the coil unit 100 due to the gate mark 132 can be avoided.

弁本体１０の内部には吸引子５０がカシメ部Ｋ１により固定される。吸引子５０を貫通する弁棒７０は、プランジャ６０と一体に結合される。プランジャ６０と吸引子５０の間には、コイルスプリング６２が設けられ、プランジャ６０を常時吸引子５０に離反する方向（上方）に付勢する。 The interior of the valve body 10 suction element 50 is fixed by the caulking portion K 1. A valve stem 70 passing through the suction element 50 is integrally coupled to the plunger 60. A coil spring 62 is provided between the plunger 60 and the suction element 50, and urges the plunger 60 in a direction (upward) away from the suction element 50 at all times.

コイルユニット１００に給電されると、コイル１２０の発生する磁力により吸引子５０は、プランジャ６０を吸引する。この作用により、弁棒７０の弁部７２は、弁シート２２の弁座２０に当接され、閉弁する。
コイルユニット１００の給電が断たれると、コイルスプリング６２の作用により、プランジャ６０つまり弁棒７０は引き上げられ、開弁する。 When power is supplied to the coil unit 100, the attractor 50 attracts the plunger 60 by the magnetic force generated by the coil 120. Due to this action, the valve portion 72 of the valve stem 70 comes into contact with the valve seat 20 of the valve seat 22 and closes.
When the power supply to the coil unit 100 is cut off, the plunger 60, that is, the valve stem 70 is pulled up and opened by the action of the coil spring 62.

図４、図５は、本発明の他の実施例を示す説明図である。
全体を符号１Ａで示す電磁弁は、ハウジング２５０の構造が先の実施例の電磁弁１とは異なるが、それ以外の構成は同じである。そこで、同じ部材に対しては、同一の符号を付して、詳細な説明を省略する。 4 and 5 are explanatory diagrams showing another embodiment of the present invention.
The solenoid valve shown as a whole by reference numeral 1A is different from the solenoid valve 1 of the previous embodiment in the structure of the housing 250, but the other configurations are the same. Therefore, the same members are denoted by the same reference numerals, and detailed description thereof is omitted.

本実施例の電磁弁１Ａのハウジング２５０は、コイルモールド１３０のゲート跡１３２を収容するスペースとして、図４の長円で囲った部分を示す図５のように凹部２５２を有する。
ハウジング２５０は、金属板をプレス加工して作られる。そこで、このプレス加工時に凹部２５２を同時に加工することができ、工数の増加は防止することができる。
ゲート跡１３２を除去することなく、このゲート跡１３２をコイルモールド１３０の位置決め、廻り止めとして活用している。 The housing 250 of the electromagnetic valve 1A of the present embodiment has a recess 252 as a space for accommodating the gate mark 132 of the coil mold 130 as shown in FIG.
The housing 250 is made by pressing a metal plate. Therefore, the concave portion 252 can be processed at the same time during the press processing, and an increase in man-hours can be prevented.
Without removing the gate trace 132, the gate trace 132 is used for positioning and stopping the coil mold 130.

本発明の電磁弁の実施例を示す断面図。Sectional drawing which shows the Example of the solenoid valve of this invention. 図１の左側面図。The left view of FIG. 本発明の電磁弁の要部の説明図。Explanatory drawing of the principal part of the solenoid valve of this invention. コイルモールドの斜視図。The perspective view of a coil mold. 本発明の電磁弁の他の実施例を示す断面図。Sectional drawing which shows the other Example of the solenoid valve of this invention. 要部を示す説明図。Explanatory drawing which shows the principal part.

符号の説明Explanation of symbols

１ 電磁弁
１０ 弁本体
２０ 弁座部材
２２ 弁シート
４０ 弁室
５０ 吸引子
６０ プランジャ
６２ スプリング
７０ 弁棒
７２ 弁部
１００ コイルユニット
１１０ ボビン
１２０ コイル
１３０ コイルモールド
１３２ ゲート跡
１５０ ハウジング
１５２ 開口部 DESCRIPTION OF SYMBOLS 1 Solenoid valve 10 Valve main body 20 Valve seat member 22 Valve seat 40 Valve chamber 50 Suction element 60 Plunger 62 Spring 70 Valve rod 72 Valve part 100 Coil unit 110 Bobbin 120 Coil 130 Coil mold 132 Gate trace 150 Housing 152 Opening part

Claims (3)

電磁弁等に装備される電磁石装置であって、ボビンに巻いた電磁コイルを金型内で樹脂と一緒にモールドしたコイルモールドと、該コイルモールドを収容する金属製のハウジングとを備え、該ハウジングは、前記コイルモールドの外側に残留するモールド時のゲート跡を収容する開口部又は凹部を有しており、前記コイルモールドは、そのゲート跡を前記開口部又は凹部に係合することにより前記ハウジングに対して位置決めされることを特徴とする電磁弁等の電磁石装置。An electromagnet device mounted on a solenoid valve or the like, comprising: a coil mold in which an electromagnetic coil wound around a bobbin is molded together with a resin in a mold; and a metal housing that accommodates the coil mold. Has an opening or a recess that accommodates the gate trace when molding remains outside the coil mold, and the coil mold engages the gate trace with the opening or the recess to thereby form the housing. An electromagnetic device such as an electromagnetic valve, which is positioned with respect to the electromagnetic valve. 端部が開口する大径部及び有底の小径部を有する弁本体と、該弁本体の大径部の開口部を封止する弁座部材と、該弁座部材の弁シートを開閉する弁部を有する弁棒と、前記弁本体の小径部の内側に固定される吸引子と、該吸引子を貫通する弁棒に一体に取付けられるプランジャと、前記吸引子及びプランジャ間に配設されて前記プランジャを前記吸引子から引き離す方向に付勢するスプリングと、前記弁本体の小径部外側に嵌装される電磁石装置とを備えてなる電磁弁であって、
前記電磁石装置は、前記弁本体小径部の嵌装孔を有するボビンに巻いた電磁コイルを金型内で樹脂と一体にモールドしたコイルモールドと、該コイルモールドを収容する上壁部、下壁部及び側壁部を含むコ字状金属製のハウジングとからなるコイルユニットで構成されており、前記ハウジングの上壁部及び下壁部には、前記弁本体小径部の嵌装孔が、また、前記ハウジングの側壁部には、前記コイルモールドの外側に残留するモールド時のゲート跡を収容する開口部又は凹部がそれぞれ形成されるとともに、前記コイルモールドは、そのゲート跡を前記ハウジング側壁部の開口部又は凹部に係合することにより前記ハウジングに対して位置決めされることを特徴とする電磁弁。 A valve body end portion has a small diameter portion of the large diameter portion and having a bottom opening, a valve seat member for sealing the opening of the large-diameter portion of said valve body, a valve for opening and closing the valve seat of the valve seat member a valve stem having a part, and a suction element which is fixed to the inside of the small diameter portion of the valve body, a plunger mounted integrally with the valve stem that penetrates the suction element is disposed between the attractor and plunger wherein a spring for biasing the direction of separating from the suction element, an electromagnetic valve comprising a magnet device which is fitted to the small diameter portion outside of the valve body the plunger Te,
The electromagnet unit, wherein the valve body and the coil mold is molded with the resin integrally electromagnetic coil wound on a bobbin in a mold having a fitting hole of the small diameter portion, the upper wall portion you accommodating the coil mold, the lower wall And a U-shaped metal housing including a side wall portion, and the upper wall portion and the lower wall portion of the housing have fitting holes for the small diameter portion of the valve body, The side wall of the housing is formed with an opening or a recess for receiving a gate mark at the time of molding remaining outside the coil mold, and the coil mold has the gate mark opened at the side wall of the housing. An electromagnetic valve characterized by being positioned with respect to the housing by engaging a portion or a recess . 前記ハウジング上壁部の上面に、前記コイルユニットを前記弁本体の小径部に嵌装したときに、この小径部上端の凹部に弾性係合するストッパ部材を設けたことを特徴とする請求項２記載の電磁弁。 3. A stopper member is provided on the upper surface of the upper wall portion of the housing. The stopper member elastically engages with a recess at the upper end of the small diameter portion when the coil unit is fitted to the small diameter portion of the valve body. The solenoid valve described.
JP2004335931A 2004-11-19 2004-11-19 Electromagnetic devices such as solenoid valves and solenoid valves Expired - Fee Related JP4977314B2 (en)

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