JP2013245728A - Motor-operated valve - Google Patents

Motor-operated valve Download PDF

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JP2013245728A
JP2013245728A JP2012118807A JP2012118807A JP2013245728A JP 2013245728 A JP2013245728 A JP 2013245728A JP 2012118807 A JP2012118807 A JP 2012118807A JP 2012118807 A JP2012118807 A JP 2012118807A JP 2013245728 A JP2013245728 A JP 2013245728A
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coil unit
motor
operated valve
valve
valve body
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JP5850799B2 (en
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Takao Harada
貴雄 原田
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Fujikoki Corp
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Fujikoki Corp
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Abstract

PROBLEM TO BE SOLVED: To improve a mounting structure for a coil unit detachably fitted onto a can storing a rotor of a motor-operated valve.SOLUTION: A motor-operated valve 1' includes a can 30 fixed to an upper portion of a valve body 10, and four projections 32 are formed on an outer side of a lower portion of the can 30. A detent member 100 fixed to a lower portion of a coil unit 50 includes a disc portion 110 and is fixed to the coil unit 50 by means of pillar portions 52. A cylindrical portion 120 of the detent member 100 has vertical grooves 130 for the projections 32 to pass through. A mounting hole 140 is formed in a deep recess of each of the vertical grooves 130 through a narrow portion 132 and is engaged with each of the projections 32 to fix the coil unit 50.

Description

本発明は、例えば、空気調和機の冷媒の流量制御に用いる電動弁に関する。   The present invention relates to an electric valve used for controlling the flow rate of refrigerant in an air conditioner, for example.

図６は、従来の電動弁の一例の説明図であり、同図（ａ）は従来のコイルユニット５０を斜め下方から見た斜視図、（ｂ）はコイルユニット５０を弁本体１０に取り付けられたキャン３０に装着して従来の電動弁を組み立てた状態を示す正面図である。
図６において、電動弁１は、円筒状の弁本体１０を有し、弁本体１０には弁室と弁機構が装備される。
弁本体１０には弁室に連通する２本の配管２０、２２がとりつけられる。 FIG. 6 is an explanatory view of an example of a conventional motor-operated valve. FIG. 6A is a perspective view of the conventional coil unit 50 as viewed obliquely from below, and FIG. 6B is a view in which the coil unit 50 is attached to the valve body 10. It is a front view which shows the state which mounted | worn with the can 30 and assembled the conventional motor operated valve.
In FIG. 6, the motor-operated valve 1 has a cylindrical valve body 10, and the valve body 10 is equipped with a valve chamber and a valve mechanism.
Two pipes 20 and 22 communicating with the valve chamber are attached to the valve body 10.

弁本体１０の上部には、取付部１２を介して密閉容器であるキャン３０が固着される。弁本体１０の内部には、モータのロータと、ロータの回転を直線運動に変換して弁室内の弁体を操作する駆動機構が配設される。   A can 30, which is a sealed container, is fixed to the upper portion of the valve main body 10 via the attachment portion 12. Inside the valve body 10, a rotor of the motor and a drive mechanism for operating the valve body in the valve chamber by converting the rotation of the rotor into a linear motion are disposed.

キャン３０はステンレススチールなどで製造され、下部には外周上に４個の凸部３２がプレス加工等により形成される。
キャン３０の外側には電動弁１のモータのステータを構成するコイルユニット５０が着脱自在に嵌着される。 The can 30 is made of stainless steel or the like, and four convex portions 32 are formed on the outer periphery at the lower portion by press working or the like.
A coil unit 50 that constitutes the stator of the motor of the motor-operated valve 1 is detachably fitted to the outside of the can 30.

コイルユニット５０は、極磁歯を有するヨークとコイルとを樹脂で一体にモールドした構造のステータであり、コイルユニット５０の底部には、環状の金属円板６０がとりつけられる。
金属円板６０はコイルユニット５０の底部に設けられる複数本の柱部５２が貫通する穴を有し、柱部５２を貫通した後に柱部５２を溶融加工して金属円板６０を固定する。 The coil unit 50 is a stator having a structure in which a yoke having polar magnetic teeth and a coil are integrally molded with resin, and an annular metal disk 60 is attached to the bottom of the coil unit 50.
The metal disk 60 has a hole through which a plurality of pillars 52 provided at the bottom of the coil unit 50 passes, and after passing through the pillars 52, the pillars 52 are melt processed to fix the metal disks 60.

本例にあっては、８本の柱部５２が設けられる。また、金属円板６０は、４本の回り止め脚部６２を有する。回り止め脚部６２は金属円板６０の内側に設けた金属片を下向きに折り曲げることで形成される。   In this example, eight column parts 52 are provided. Further, the metal disk 60 has four detent legs 62. The anti-rotation leg 62 is formed by bending a metal piece provided inside the metal disk 60 downward.

回り止め脚部６２は弾性を有し、それぞれの回り止め脚部６２が取付穴６４を備える。
コイルユニット５０をキャン３０に装着する工程にあっては、まずコイルユニット５０の回り止め脚部６２が設けられた側の端部をキャン３０の上部外周に嵌装し、その後、コイルユニット５０を回動させることにより、弾性を有する回り止め脚部６２がキャン３０の凸部３２に乗り上げ、回り止め脚部６２の取付穴６４が凸部３２に嵌合することでコイルユニット５０の装着が完了する。
このような電動弁は、例えば特許文献１に開示されている。 The anti-rotation leg 62 has elasticity, and each anti-rotation leg 62 includes a mounting hole 64.
In the step of attaching the coil unit 50 to the can 30, first, the end of the coil unit 50 on the side where the detent leg 62 is provided is fitted to the upper outer periphery of the can 30, and then the coil unit 50 is attached. By rotating, the non-rotating leg part 62 having elasticity rides on the convex part 32 of the can 30, and the mounting hole 64 of the non-rotating leg part 62 fits into the convex part 32, thereby completing the mounting of the coil unit 50. To do.
Such a motor-operated valve is disclosed in Patent Document 1, for example.

特開２００８−２６７４６４号公報JP 2008-267464 A

電動弁は、出荷時にキャン３０に対してコイルユニット５０を組み付けたり、また空気調和機の冷媒流路に取り付けられた後はコイルユニット５０を交替したりする。   The motor-operated valve attaches the coil unit 50 to the can 30 at the time of shipment, or replaces the coil unit 50 after being attached to the refrigerant flow path of the air conditioner.

このコイルユニット５０の組付けや交換時においては、回り止め脚部６２の取付穴６４がキャン３０の凸部３２に対して正規の位置と姿勢で正しく組付けられたことを視認などで確認することが困難なことがある。   When assembling or replacing the coil unit 50, it is confirmed by visual confirmation that the mounting hole 64 of the detent leg portion 62 is correctly assembled with the convex portion 32 of the can 30 in the proper position and posture. Can be difficult.

回り止め脚部６２は弾性を有しており、この弾性を利用して取付穴６４を凸部３２に対して嵌合するので、取付穴６４が凸部３２に正確に嵌合していなくても、一見回り止め脚部６２が正しく凸部３２に対して嵌合していると誤認されてしまい、組立不良の原因となるおそれもある。
そこで本発明の目的は、上述した不具合を解消する電動弁を提供するものである。 The anti-rotation leg portion 62 has elasticity, and the attachment hole 64 is fitted to the convex portion 32 by using this elasticity. Therefore, the attachment hole 64 is not accurately fitted to the convex portion 32. However, it may be mistaken for the seemingly non-rotating leg portion 62 to be correctly fitted to the convex portion 32, which may cause an assembly failure.
Accordingly, an object of the present invention is to provide a motor-operated valve that solves the above-described problems.

上記目的を達成するために、本発明の電動弁は内部に弁室と弁体を有する弁本体と、弁本体の上部に固着される円筒状密閉容器であって内部にモータのロータとロータの回転を直進運動に変換して弁体を操作する機構を備えるキャンと、キャンに対して着脱自在に嵌装されるステータを有するコイルユニットを備え、キャンに対してコイルユニットを固定する機構は、キャンに形成される少なくとも１つの凸部と、コイルユニットに固着される回り止め部材であって、キャンが貫通する円筒部と、円筒部に形成されてキャンの凸部が通過する縦溝と、縦溝の最奥部に形成されてキャンの凸部と係合する取付穴を備えるものである。   In order to achieve the above object, an electric valve according to the present invention includes a valve body having a valve chamber and a valve body therein, and a cylindrical sealed container fixed to an upper portion of the valve body. A mechanism including a can having a mechanism for operating the valve body by converting rotation into a straight motion, and a stator that is detachably fitted to the can, and a mechanism for fixing the coil unit to the can. At least one convex portion formed on the can, a rotation preventing member fixed to the coil unit, a cylindrical portion through which the can penetrates, a vertical groove formed in the cylindrical portion through which the convex portion of the can passes, A mounting hole is formed at the innermost part of the vertical groove and engages with the convex part of the can.

そして、縦溝は、取付穴の手前に形成される幅狭部を備える。   The vertical groove includes a narrow portion formed in front of the attachment hole.

また、回り止め部材の円筒部は弾性を有する金属又は樹脂材で形成されるものである。
さらにまた、円筒部の長さは、取付穴がキャンの凸部に正しく係合した状態においてのみ、円筒部がキャンの下部を全て覆うように、設定されると良い。 In addition, the cylindrical portion of the anti-rotation member is formed of an elastic metal or resin material.
Furthermore, the length of the cylindrical portion may be set so that the cylindrical portion covers the entire lower portion of the can only when the mounting hole is correctly engaged with the convex portion of the can.

本発明の電動弁は以上の手段を備えることにより、ロータを内蔵するキャンに対して、ステータであるコイルユニットを正確かつ容易に取り付けることができ、作業性が向上する。   By providing the motor valve of the present invention with the above means, a coil unit as a stator can be accurately and easily attached to a can with a built-in rotor, and workability is improved.

本発明の電動弁の一実施例の組立前の説明図。Explanatory drawing before the assembly of one Example of the motor operated valve of this invention. 本発明の電動弁の一実施例の組立中の正面図。The front view during the assembly of one Example of the motor operated valve of this invention. 図２のＡ部拡大図。The A section enlarged view of FIG. 本発明の電動弁の一実施例の組立完了後の正面図。The front view after the assembly completion of one Example of the motor operated valve of this invention. 図４のＢ部拡大図。The B section enlarged view of FIG. 従来の電動弁の一例の説明図であり、（ａ）は従来のコイルユニット５０を斜め下から見た斜視図、（ｂ）はコイルユニット５０をキャン３０に装着した状態を示す従来の電動弁の一例の正面図。It is explanatory drawing of an example of the conventional electrically operated valve, (a) is the perspective view which looked at the conventional coil unit 50 from diagonally downward, (b) is the conventional electrically operated valve which shows the state which mounted | wore the can 30 with the coil unit 50 FIG.

図１は本発明の電動弁の一実施例の組立前の部品構成を示す説明図である。同図において、電動弁本体は正面図、コイルユニット５０は斜視図として描かれている。なお、従来技術で説明した図６に示す構造と同一部材には同一符号を付してその説明を省略している。   FIG. 1 is an explanatory view showing a component structure before assembly of an embodiment of the electric valve of the present invention. In the figure, the motor-operated valve main body is depicted as a front view, and the coil unit 50 is depicted as a perspective view. In addition, the same code | symbol is attached | subjected to the same member as the structure shown in FIG. 6 demonstrated by the prior art, and the description is abbreviate | omitted.

電動弁１´は、弁本体１０を有し、弁本体１０に対して２本の配管２０、２２が接続される。弁本体１０の上部には取付部１２を介して密閉容器であるキャン３０が固着される。キャン３０の内部の機構は従来の電動弁と同様である。   The motor-operated valve 1 ′ has a valve main body 10, and two pipes 20 and 22 are connected to the valve main body 10. A can 30, which is a sealed container, is fixed to the upper portion of the valve main body 10 via an attachment portion 12. The internal mechanism of the can 30 is the same as that of a conventional motorized valve.

キャン３０は円筒状の金属容器であって、キャン頂部３４は、コイルユニット５０を装着したときにコイルユニット５０の内部と当接してコイルユニット５０のキャン３０に対する高さ位置を規制する。
キャン３０の下部には外周部に４個の凸部３２がプレス加工により形成される。 The can 30 is a cylindrical metal container, and the can top 34 abuts the inside of the coil unit 50 when the coil unit 50 is mounted, and regulates the height position of the coil unit 50 with respect to the can 30.
In the lower part of the can 30, four convex parts 32 are formed on the outer peripheral part by press working.

コイルユニット５０は従来と同様の内部構造を有し、下部に８本の柱部５２を有する。
本発明の電動弁１´に装備される回り止め部材１００は、円環状の円盤部１１０と円筒部１２０を備える。円盤部１１０は従来と同様に８個の穴を有し、コイルユニット５０の柱部５２を挿入した後に柱部５２の先端部を溶融加工して円盤部１１０をコイルユニット５０に固着する。 The coil unit 50 has the same internal structure as that of the prior art, and has eight column parts 52 at the bottom.
A detent member 100 provided in the electric valve 1 ′ of the present invention includes an annular disk part 110 and a cylindrical part 120. The disk part 110 has eight holes as in the conventional case, and after inserting the column part 52 of the coil unit 50, the tip part of the column part 52 is melt processed to fix the disk part 110 to the coil unit 50.

円筒部１２０は４本の縦溝１３０を有する。縦溝１３０は円筒部１２０の下端において開放すると共にキャン３０の凸部３２が通過できる幅寸法を有し、最奥部に取付穴１４０を有する。取付穴１４０の手前には幅狭部１３２が形成される。   The cylindrical part 120 has four longitudinal grooves 130. The vertical groove 130 is open at the lower end of the cylindrical portion 120 and has a width dimension through which the convex portion 32 of the can 30 can pass, and has a mounting hole 140 in the innermost portion. A narrow portion 132 is formed in front of the mounting hole 140.

図２は、コイルユニット５０にとりつけた回り止め部材１００の縦溝１３０をキャン３０の凸部３２に係合するように差し込んで、コイルユニット５０をキャン３０に装着した状態を示す。図２〜５においては、図を見やすくするために、取付穴１４０の紙面手前側に配置されている柱部５２の図示は省略されている。
この状態にあっては、コイルユニット５０の軸まわりの姿勢は縦溝１３０と凸部３２との係合により位置決めされる。また、凸部３２は取付穴１４０の手前の幅狭部１３２で止められている。 FIG. 2 shows a state in which the longitudinal groove 130 of the detent member 100 attached to the coil unit 50 is inserted so as to engage with the convex portion 32 of the can 30 and the coil unit 50 is attached to the can 30. 2 to 5, in order to make the drawings easier to see, the illustration of the column portion 52 disposed on the front side of the mounting hole 140 in the drawing is omitted.
In this state, the position of the coil unit 50 around the axis is positioned by the engagement between the longitudinal groove 130 and the convex portion 32. Further, the convex portion 32 is stopped by a narrow portion 132 in front of the attachment hole 140.

図４は、図２の状態からコイルユニット５０をさらに弁本体１０側に押し込んだ状態を示す。
凸部３２は縦溝１３０の幅狭部１３２を弾性的に拡げて取付穴１４０に係合する。幅狭部１３２は凸部３２が強制的に通過する際に弾性的に拡がる特性を有する必要がある。
このために円筒部１２０は必要な剛性と弾性を有する必要がある。 FIG. 4 shows a state where the coil unit 50 is further pushed into the valve body 10 from the state of FIG.
The convex part 32 engages with the mounting hole 140 by elastically expanding the narrow part 132 of the longitudinal groove 130. The narrow portion 132 needs to have a characteristic of expanding elastically when the convex portion 32 passes through forcibly.
Therefore, the cylindrical portion 120 needs to have necessary rigidity and elasticity.

この要求を満足する材料であれば、金属でも樹脂でも回り止め部材１００の材料として使用することができる。回り止め部材１００を金属で形成するときは、金属板をプレス加工することにより形成することができる。   Any material that satisfies this requirement can be used as the material of the anti-rotation member 100, either metal or resin. When the anti-rotation member 100 is formed of metal, it can be formed by pressing a metal plate.

凸部３２が取付穴１４０に係合した後は、幅狭部１３２は弾性により元の幅寸法に復帰し、凸部３２が縦溝１３０方向に移動することがない。この作用により凸部３２と取付穴１４０は確実に係合し、コイルユニット５０はキャン３０に対して正確な位置に確実に組立てられる。   After the convex portion 32 is engaged with the mounting hole 140, the narrow portion 132 returns to the original width dimension due to elasticity, and the convex portion 32 does not move in the direction of the longitudinal groove 130. By this action, the convex portion 32 and the mounting hole 140 are reliably engaged, and the coil unit 50 is reliably assembled to the can 30 at an accurate position.

また、この組立作業は容易であって、作業性も向上する。   Further, this assembling work is easy and the workability is improved.

さらに、取付穴１４０がキャン３０の凸部３２に正しく係合した状態においてのみ、円筒部１２０の下部（縦溝１３０が形成されていない部分）がキャン３０の下部（又はキャン３０の下部及び取付部１２）を全て覆うように、該円筒部１２０の長さ（高さ）を予め設定しておけば、円筒部１２０の下方にキャン３０（又はキャン３０及び取付部１２）が露出しているか否かを判別するだけで、取付穴１４０が凸部３２に正しく係合したか否か、すなわちコイルユニット５０が正しくキャン３０に装着されたか否かを判別することができる。   Further, only when the mounting hole 140 is correctly engaged with the convex portion 32 of the can 30, the lower portion of the cylindrical portion 120 (the portion where the vertical groove 130 is not formed) is the lower portion of the can 30 (or the lower portion of the can 30 and the mounting). If the length (height) of the cylindrical portion 120 is set in advance so as to cover the entire portion 12), is the can 30 (or the can 30 and the attachment portion 12) exposed below the cylindrical portion 120? It is possible to determine whether or not the mounting hole 140 is correctly engaged with the convex portion 32, that is, whether or not the coil unit 50 is correctly attached to the can 30.

図１〜５では、このように円筒部１２０の長さが予め設定されている様子が示されている。すなわち、図２においては、取付穴１４０が凸部３２に係合する途中の状態が示されており、円筒部１２０の下方にはキャン３０が露出している（図３の符号Ｘ参照）が、図４に示されるように取付穴１４０が凸部３２に正しく係合すれば、円筒部１２０がキャン３０の下部（及び取付部１２）を全て覆う（図５参照）。   1 to 5 show a state in which the length of the cylindrical portion 120 is set in advance as described above. That is, FIG. 2 shows a state where the mounting hole 140 is engaged with the convex portion 32, and the can 30 is exposed below the cylindrical portion 120 (see reference numeral X in FIG. 3). As shown in FIG. 4, when the mounting hole 140 is correctly engaged with the convex portion 32, the cylindrical portion 120 covers the entire lower portion (and the mounting portion 12) of the can 30 (see FIG. 5).

なお、キャン３０の下部に形成される凸部３２、及び円筒部１２０に設けられる縦溝１３０（取付穴１４０及び幅狭部１３２を含む）は、それぞれ４つずつ設けられるものとしたが、本発明は特にこれのみに限定されることはなく、１つ以上設けられれば良い。   In addition, although the convex part 32 formed in the lower part of the can 30 and the vertical groove | channel 130 (including the attachment hole 140 and the narrow part 132) provided in the cylindrical part 120 shall be provided 4 each, this book The invention is not particularly limited to this, and one or more may be provided.

また、コイルユニット５０の下部には８本の柱部５２が設けられると共に、この柱部５２に回り止め部材１００の８つの穴が係合し、その後溶着されることにより該回り止め部材１００がコイルユニット５０に取り付けられるものとしたが、本発明はこれのみに限定されることはなく、コイルユニット５０に対する回り止め部材１００の取付手法は、いかなるものであっても良い。   In addition, eight column portions 52 are provided in the lower portion of the coil unit 50, and the eight holes of the rotation preventing member 100 are engaged with the column portions 52 and then welded, whereby the rotation preventing member 100 is fixed. Although attached to the coil unit 50, this invention is not limited only to this, The attachment method of the rotation prevention member 100 with respect to the coil unit 50 may be what kind.

１，１´ 電動弁
１０ 弁本体
１２ 取付部
２０，２２ 配管
３０ キャン
３２ 凸部
３４ キャン頂部
５０ コイルユニット
５２ 柱部
６０ 金属円板
６２ 回り止め脚部
６４ 取付穴
１００ 回り止め部材
１１０ 円盤部
１２０ 円筒部
１３０ 縦溝
１３２ 幅狭部
１４０ 取付穴 1, 1 'Motorized valve 10 Valve body 12 Mounting portion 20, 22 Piping 30 Can 32 Convex portion 34 Can top portion 50 Coil unit 52 Column portion 60 Metal disc 62 Non-rotating leg portion 64 Mounting hole 100 Non-rotating member 110 Disk portion 120 Cylindrical part 130 Vertical groove 132 Narrow part 140 Mounting hole

Claims (4)

内部に弁室と弁体を有する弁本体と、弁本体の上部に固着される円筒状の密閉容器であって内部にモータのロータとロータの回転を直進運動に変換して弁体を操作する機構を備えるキャンと、キャンに対して着脱自在に嵌装されるステータを有するコイルユニットを備える電動弁であって、
キャンに対してコイルユニットを固定する機構は、キャンに形成される少なくとも１つの凸部と、コイルユニットに固着される回り止め部材を有し、該回り止め部材はキャンが貫通する円筒部と、円筒部に形成されてキャンの凸部が通過可能な縦溝と、縦溝の最奥部に形成されてキャンの凸部と係合する取付穴を備える電動弁。 A valve body having a valve chamber and a valve body inside, and a cylindrical sealed container fixed to an upper portion of the valve body, and operating the valve body by converting the rotation of the motor rotor and the rotor into a linear motion. A motor-operated valve comprising a can having a mechanism and a coil unit having a stator that is detachably fitted to the can,
The mechanism for fixing the coil unit to the can has at least one convex portion formed on the can and a rotation preventing member fixed to the coil unit, and the rotation preventing member includes a cylindrical portion through which the can penetrates, A motor-operated valve comprising a vertical groove formed in a cylindrical portion through which a convex portion of a can can pass, and an attachment hole formed in the innermost portion of the vertical groove and engaged with the convex portion of the can. 縦溝は、取付穴の手前に形成される溝幅を狭くした幅狭部を備える請求項１記載の電動弁。   The motor-operated valve according to claim 1, wherein the vertical groove includes a narrow portion formed by narrowing a groove formed in front of the mounting hole. 回り止め部材の円筒部は弾性を有する金属材又は樹脂材で形成される請求項１記載の電動弁。   The motor-operated valve according to claim 1, wherein the cylindrical portion of the non-rotating member is formed of an elastic metal material or resin material. 前記円筒部の長さは、前記取付穴が前記キャンの凸部に正しく係合した状態においてのみ、該円筒部がキャンの下部を全て覆うように、設定されていることを特徴とする請求項１ないし３のいずれかに記載の電動弁。   The length of the cylindrical portion is set so that the cylindrical portion covers the entire lower portion of the can only when the mounting hole is correctly engaged with the convex portion of the can. The motor-operated valve according to any one of 1 to 3.
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JP2016188707A (en) * 2013-07-23 2016-11-04 株式会社鷺宮製作所 Fluid control valve including electromagnetic coil, and electromagnetic coil unit of fluid control valve
CN106090382A (en) * 2016-08-22 2016-11-09 苏州科迪流体控制设备有限公司 A kind of sealed valve cap of spur gear high pressure sluice valve
JP2018091378A (en) * 2016-12-01 2018-06-14 株式会社鷺宮製作所 Motor valve and refrigeration cycle system
CN108468851A (en) * 2018-06-11 2018-08-31 江苏华阳电器有限公司 Motor-driven valve

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JP2016188707A (en) * 2013-07-23 2016-11-04 株式会社鷺宮製作所 Fluid control valve including electromagnetic coil, and electromagnetic coil unit of fluid control valve
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CN108468851A (en) * 2018-06-11 2018-08-31 江苏华阳电器有限公司 Motor-driven valve

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