JP4680658B2

JP4680658B2 - Motorized valve

Info

Publication number: JP4680658B2
Application number: JP2005117305A
Authority: JP
Inventors: 共存大内
Original assignee: Fujikoki Corp
Current assignee: Fujikoki Corp
Priority date: 2005-04-14
Filing date: 2005-04-14
Publication date: 2011-05-11
Anticipated expiration: 2025-04-14
Also published as: JP2006292148A

Description

本発明は、空気調和機、冷凍機等に組み込まれて使用される電動弁に係り、特に小型化を達成することができる電動弁に関する。 The present invention relates to an electric valve used by being incorporated in an air conditioner, a refrigerator, or the like, and more particularly to an electric valve that can achieve downsizing.

従来、この種の空気調和機、冷凍機等に組み込まれて使用される電動弁は、冷媒等の流体の流量を調整する機器であり、通常、弁室および弁座を備えた弁本体と、前記弁本体の上部に固着された有底円筒状の圧力容器であるキャンとを備えており、該キャンの内側にはロータが内蔵され、前記キャンの外部には中央部に挿通孔を有するステータが外嵌されているものである。
ロータは、磁性材料と樹脂とを一体に成型したボンド磁石ロータであって、ロータを駆動ねじに一体に組付けるための継手手段を必要とする。
雄ねじ部材は弁本体側に固定されており、雌ねじを有する駆動ねじは、ロータと一体に上下動し、弁体を弁座に対して離接させる。
この種の電動弁は、下記特許文献に開示されている。
特開２００１−５０４１５号公報 Conventionally, an electric valve used by being incorporated in this type of air conditioner, refrigerator, etc. is a device that adjusts the flow rate of a fluid such as a refrigerant, and usually includes a valve body having a valve chamber and a valve seat, A stator having a bottomed cylindrical pressure vessel fixed to the upper part of the valve body, a rotor built in the can, and a stator having an insertion hole in the center outside the can Are externally fitted.
The rotor is a bonded magnet rotor formed by integrally molding a magnetic material and a resin, and requires joint means for assembling the rotor integrally with a drive screw.
The male screw member is fixed to the valve body side, and the drive screw having the female screw moves up and down integrally with the rotor to bring the valve element into and out of contact with the valve seat.
This type of motor-operated valve is disclosed in the following patent document.
JP 2001-50415 A

上述した従来の電動弁にあっては、次のような課題があった。
１．ボンド磁石ロータと駆動ねじは、ロータに一体成形した継ぎ手部材を介して締結されるため、ボンド磁石の成形が難しくなるとともに、部品点数も増えコスト高となっていた。
２．雌ねじ部品が袋状になっているため、ねじなどの加工やメッキ処理などが難しくなっているとともに、耐久性を上げるために高硬度の別部材が別途必要であった。
本発明は、上述した問題を解消する電動弁を提供するものである。 The conventional motor-operated valve described above has the following problems.
1. Since the bond magnet rotor and the drive screw are fastened via a joint member integrally formed with the rotor, it becomes difficult to form the bond magnet, and the number of parts increases and the cost is high.
2. Since the female screw part is in the form of a bag, it is difficult to process screws and plating, and a separate member with high hardness is required to increase durability.
The present invention provides an electric valve that solves the above-described problems.

本発明の電動弁は、弁本体に固定される雄ねじ部を有するガイド部材と、該ガイド部材の雄ねじ部に螺合する雌ねじ部を有するスリーブ組立体と、該スリーブ組立体に固着されるロータ部材と、前記スリーブ組立体の直線運動を弁軸に伝達する伝達手段を備え、前記スリーブ組立体は、雌ねじ部及び薄肉部を有する円筒形状のスリーブ本体と該スリーブ本体の外側に固着される回転側ストッパ部材を備え、前記伝達手段は、前記スリーブ本体の薄肉部に挿入してカシメ加工により固定されて内部に前記弁軸を貫通する固定部材と、前記弁軸の端部に固定されるストッパブッシュとを有するものである。
そして、前記スリーブ組立体の前記回転側ストッパ部材は前記ロータ部材に対して超音波溶着手段により固着される。
また、前記固定部材は前記スリーブ組立体の前記スリーブ本体とは異なる材料でつくられるものである。 An electric valve according to the present invention includes a guide member having a male screw portion fixed to a valve body, a sleeve assembly having a female screw portion screwed into the male screw portion of the guide member, and a rotor member fixed to the sleeve assembly. If, comprising a transmitting means for transmitting the linear movement of the sleeve assembly to the valve shaft, the sleeve assembly, the rotation side to be secured to the outside of the sleeve body and said sleeve body in a cylindrical shape having an internally threaded portion and the thin portion A stopper member, and the transmission means is inserted into the thin portion of the sleeve body and fixed by caulking, and is fixed to the inside of the valve shaft; and a stopper bush fixed to the end of the valve shaft It has .
Then, the rotating-side stopper member of said sleeve assembly is secured by ultrasonic welding means relative to the rotor member.
Further, the fixing member is intended to be made of a different material from that of the sleeve body of the sleeve assembly.

本発明の電動弁は以下の効果を有する。
１．弁を保持する雌ねじを２つの部材で構成しカシメ（または圧入）で締結したので、加工性（ねじメッキ処理を含む）を向上し、コストダウンを図ることができる。また、ねじ部と弁保持部を別材質とし、それぞれの機能に適した材質を選択できるようにした。
２．ロータ固定を超音波溶着によってスリーブに固定したので、加工も容易である。 The electric valve of the present invention has the following effects.
1. Since the female screw for holding the valve is composed of two members and fastened by caulking (or press-fitting), workability (including screw plating) can be improved and cost can be reduced. In addition, the screw part and the valve holding part are made of different materials so that a material suitable for each function can be selected.
2. Since the rotor is fixed to the sleeve by ultrasonic welding, processing is easy.

図１は本発明の電動弁の全体の断面図、図２はロータの説明図、図３はスリーブの説明図、図４は弁保持部材の説明図である。
全体を符号１で示す電動弁は弁座１２を有する弁本体１０と、弁本体１０に固着される配管２０、２２を有する。弁本体１０にはフランジ部材２４を介して円筒状の圧力容器であるキャン３０が溶接手段Ｗ_１により固着される。 1 is a cross-sectional view of the entire motor-operated valve of the present invention, FIG. 2 is an explanatory view of a rotor, FIG. 3 is an explanatory view of a sleeve, and FIG. 4 is an explanatory view of a valve holding member.
The motor-operated valve indicated as a whole by reference numeral 1 has a valve body 10 having a valve seat 12 and pipes 20 and 22 fixed to the valve body 10. A can 30, which is a cylindrical pressure vessel, is fixed to the valve body 10 by a welding means W ₁ via a flange member 24.

キャン３０の外周部には、全体を符号４０で示すステッピングモータ用のステータ部材が着脱自在に嵌着される。ステータの構成は、従来のものと同様であるので、詳細な説明は省略する。
キャン３０の内部には、ロータ部材５０が回転自在に装備される。 A stator member for a stepping motor, indicated as a whole by reference numeral 40, is detachably fitted to the outer periphery of the can 30. Since the configuration of the stator is the same as that of the conventional one, detailed description is omitted.
Inside the can 30, a rotor member 50 is rotatably mounted.

図２は、ロータ部材５０の詳細を示し、薄肉の円筒形状の部材の内側に取付用のフランジ部５２が形成してある。フランジ部５２の内径部５３には、３個の突起５４が設けてある。
ロータ部材５０は、スリーブ組立体６０に嵌合され、超音波溶着手段Ｗ_２により一体化される。 FIG. 2 shows details of the rotor member 50, and a mounting flange 52 is formed inside a thin cylindrical member. Three protrusions 54 are provided on the inner diameter portion 53 of the flange portion 52.
Rotor member 50 is fitted into the sleeve assembly 60 are integrated by ultrasonic welding means W _2.

図３は、スリーブ組立体６０の詳細を示す。スリーブ組立体６０は、金属材製のスリーブ本体６１を有し、内側に雌ねじ部６２が加工され、メッキ処理される。スリーブ本体６１の上端部は薄肉部６４に加工され、内径部６６は雄ねじ部材８０に摺動自在に当接する。スリーブ本体６１の外周部には、樹脂製回転側ストッパ部材７０が射出成形により一体的に形成される。この回転側ストッパ部材７０はロータ部材５０の３本の突起５４を受け入れる３個のスリット部７３を有し、超音波溶着手段Ｗ_２によりスリーブ組立体６０に固着する。 FIG. 3 shows details of the sleeve assembly 60. The sleeve assembly 60 has a sleeve body 61 made of a metal material, and an internal thread portion 62 is processed inside and plated. The upper end portion of the sleeve body 61 is processed into a thin portion 64, and the inner diameter portion 66 abuts on the male screw member 80 so as to be slidable. A resin-made rotation-side stopper member 70 is integrally formed on the outer peripheral portion of the sleeve body 61 by injection molding. The rotation-side stopper member 70 has three slits 73 for receiving the three protrusions 54 of the rotor member 50 is secured to the sleeve assembly 60 by ultrasonic welding means W _2.

スリーブ組立体６０の内側に配設されるガイド部材８０は、弁本体１０に固定される。ガイド部材８０の上端には雄ねじ部８２が形成され、スリーブ本体６１の雌ねじ部６２に螺合する。スリーブ本体６１の上端の薄肉部６４内に固定部材１１０を挿入し、薄肉部６４の上縁部にカシメ加工を施して固定部材１１０と一体化する。この構成により雌ねじ部を有するスリーブ本体のねじ加工とメッキ処理が容易となる。 A guide member 80 disposed inside the sleeve assembly 60 is fixed to the valve body 10. A male screw portion 82 is formed at the upper end of the guide member 80 and is screwed into the female screw portion 62 of the sleeve body 61. The fixing member 110 is inserted into the thin-walled portion 64 at the upper end of the sleeve main body 61, and the upper edge portion of the thin-walled portion 64 is crimped to be integrated with the fixing member 110. With this configuration, the threading and plating of the sleeve body having the female thread portion can be facilitated.

図４に示すように、固定部材１１０は、上部にテーパー部１１２を有し、カシメ加工を容易とする。固定部材１１０の内径部１１４は弁軸１００が貫通する寸法を有する。固定部材１１０を貫通した弁軸１００の上端にストッパブッシュ１３０を圧入して、弁軸１００と一体化する。ストッパブッシュ１３０の外周にはコイルスプリング１４０がとりつけられ、ねじ部の螺号の外れを防止する。
固定部材１１０と弁軸１００の間にはコイルスプリング１２０が設けられる。 As shown in FIG. 4, the fixing member 110 has a tapered portion 112 at the upper portion to facilitate caulking. The inner diameter portion 114 of the fixing member 110 has a dimension through which the valve shaft 100 passes. A stopper bush 130 is press-fitted into the upper end of the valve shaft 100 penetrating the fixing member 110 and integrated with the valve shaft 100. A coil spring 140 is attached to the outer periphery of the stopper bush 130 to prevent the screw part from being removed.
A coil spring 120 is provided between the fixed member 110 and the valve shaft 100.

弁本体１０に固定されたガイド部材８０の外側には固定側ストッパ部材９０がとりつけられ、ロータ部材５０と一体に回転し上下動するスリーブ組立体６０の下限位置を規制する。 A fixed-side stopper member 90 is attached to the outside of the guide member 80 fixed to the valve body 10 and regulates the lower limit position of the sleeve assembly 60 that rotates integrally with the rotor member 50 and moves up and down.

図１の状態は、弁軸１００の先端のテーパー部１０２が弁本体１０の弁座１２に圧接された閉弁状態を示す。 The state of FIG. 1 shows a closed valve state in which the tapered portion 102 at the tip of the valve shaft 100 is in pressure contact with the valve seat 12 of the valve body 10.

この状態から、ステータ部材４０にパルス電流が給電されると、ロータ部材５０は、指令されたパルスに対応して開弁方向に回転運動する。ロータ部材５０と一体のスリーブ組立体６０は、回転し、ねじ機構６２、８２の作用により直線運動に変換され、上方へ移動する。 When a pulse current is supplied to the stator member 40 from this state, the rotor member 50 rotates in the valve opening direction in response to the commanded pulse. The sleeve assembly 60 integrated with the rotor member 50 rotates, is converted into a linear motion by the action of the screw mechanisms 62 and 82, and moves upward.

スリーブ組立体６０が上昇すると、ストッパブッシュ１３０と一体の弁軸１００を上昇させる。弁軸１００の上昇によりテーパー部１０２は弁座１２から引き抜かれ、開弁方向へ移動する。
所定のパルス数だけロータ部材５０が回転すると全開位置となり、回転は停止する。全開位置から全閉位置までは、上述した作動の逆運動を行う。 When the sleeve assembly 60 is raised, the valve shaft 100 integrated with the stopper bush 130 is raised. As the valve shaft 100 is raised, the tapered portion 102 is pulled out of the valve seat 12 and moves in the valve opening direction.
When the rotor member 50 rotates by a predetermined number of pulses, the fully open position is reached and the rotation stops. From the fully open position to the fully closed position, the reverse movement of the above-described operation is performed.

本発明の電動弁は以上のように、ねじ機構を構成する部材の構造を簡素化してあるので、ねじ部の加工やメッキ処理が容易である。
また、部品点数も削減されるので、低価格の電動弁が達成される。 As described above, the motor-operated valve of the present invention simplifies the structure of the members constituting the screw mechanism, so that the thread portion can be easily processed and plated.
Moreover, since the number of parts is also reduced, a low-priced motor-operated valve is achieved.

本発明の電動弁の断面図。Sectional drawing of the motor operated valve of this invention. 本発明の電動弁の部材の説明図。Explanatory drawing of the member of the motor operated valve of this invention. 本発明の電動弁の部材の説明図。Explanatory drawing of the member of the motor operated valve of this invention. 本発明の電動弁の部材の説明図。Explanatory drawing of the member of the motor operated valve of this invention.

Explanation of symbols

１電動弁
１０弁本体
３０キャン
４０ステータ部材
５０ロータ部材
６０スリーブ組立体
６１スリーブ本体
７０回転側ストッパ部材
８０ガイド部材
９０固定側ストッパ部材
１００弁軸
１１０固定部材
１２０コイルスプリング
１３０ストッパブッシュ
１４０コイルスプリング DESCRIPTION OF SYMBOLS 1 Motorized valve 10 Valve main body 30 Can 40 Stator member 50 Rotor member 60 Sleeve assembly 61 Sleeve main body 70 Rotation side stopper member 80 Guide member 90 Fixed side stopper member 100 Valve shaft 110 Fixing member 120 Coil spring 130 Stopper bush 140 Coil spring

Claims

A valve body having a valve seat, is rotatably fitted and the can is a cylindrical pressure vessel which is secured to the valve body, and the stator member of the stepping motor which is fitted on the outside of the scan, the inside of the can and the rotor member, an electric valve to operate the valve shaft is converted into linear motion by the rotary motion of the rotor member screw mechanism,
A guide member having a male screw portion fixed to the valve body, a sleeve assembly having a female thread portion screwed to the male screw portion of the guide member, a rotor member which is secured to said sleeve assembly, said sleeve assembly A transmission means for transmitting the linear motion of the valve to the valve shaft,
The sleeve assembly includes a rotating-side stopper member which is fixed to the outside of the sleeve body and said sleeve body in a cylindrical shape having an internally threaded portion and a thin portion,
The transmission means includes a fixing member that is inserted into a thin portion of the sleeve main body and fixed by caulking and penetrates the valve shaft, and a stopper bush fixed to an end portion of the valve shaft. .

Electric valve according to claim 1, wherein said rotation-side stopper member of said sleeve assembly to be secured by ultrasonic welding means relative to the rotor member.

The motor-operated valve according to claim 1, wherein the fixing member is made of a material different from that of the sleeve body of the sleeve assembly .