JP2950162B2 - Fluid control valve - Google Patents

Fluid control valve

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Publication number
JP2950162B2
JP2950162B2 JP23099394A JP23099394A JP2950162B2 JP 2950162 B2 JP2950162 B2 JP 2950162B2 JP 23099394 A JP23099394 A JP 23099394A JP 23099394 A JP23099394 A JP 23099394A JP 2950162 B2 JP2950162 B2 JP 2950162B2
Authority
JP
Japan
Prior art keywords
valve body
valve
housing
motor
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP23099394A
Other languages
Japanese (ja)
Other versions
JPH0893933A (en
Inventor
白井　　滋
博明 ▲よし▼田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23099394A priority Critical patent/JP2950162B2/en
Publication of JPH0893933A publication Critical patent/JPH0893933A/en
Application granted granted Critical
Publication of JP2950162B2 publication Critical patent/JP2950162B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Taps Or Cocks (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Multiple-Way Valves (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、流量制御および流量混
合たとえば湯と水を混合して適温の給湯をする等が可能
な流体制御弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid control valve capable of controlling and mixing flow rates, for example, mixing hot water and water to supply hot water at an appropriate temperature.

【０００２】[0002]

【従来の技術】従来のこの種の流体制御弁（例えば実開
昭６２−１１９５８６号公報）を、図１４および図１
５、図１６に示す。同図において、１は弁本体、２、３
は入口ポート、４は出口ポートである。弁本体１の入口
ポート２、３間の弁室１ａは筒状に形成されていて、そ
の弁室１ａ内にその内径に合致する外径を有した筒状の
弁体５が水密的に回動可能に配置されている。この弁体
５の一端部５aの中央には弁本体１の上端面に装備した
ステッピングモータ６の駆動軸７が固定され、また他端
部５bは開口して出口ポート４に連通している。また、
弁体５の周面には、図１５に示すように２カ所に開口部
５ｃ、５ｄが形成されていて、一方の開口部５ｃが入口
ポート２に連通し、また他方の開口部５ｄが入口ポート
３に連通している。2. Description of the Related Art A conventional fluid control valve of this type (for example, Japanese Utility Model Laid-Open No. 62-119586) is shown in FIGS.
5, shown in FIG. In the figure, 1 is a valve body, 2, 3
Is an inlet port, and 4 is an outlet port. The valve chamber 1a between the inlet ports 2 and 3 of the valve body 1 is formed in a cylindrical shape, and a cylindrical valve body 5 having an outer diameter matching the inner diameter of the valve chamber 1a is provided in the valve chamber 1a in a watertight manner. It is movably arranged. A drive shaft 7 of a stepping motor 6 mounted on the upper end surface of the valve body 1 is fixed to the center of one end 5a of the valve body 5, and the other end 5b is open and communicates with the outlet port 4. Also,
As shown in FIG. 15, openings 5c and 5d are formed in two places on the peripheral surface of the valve body 5, and one opening 5c communicates with the inlet port 2 and the other opening 5d communicates with the inlet port. It communicates with port 3.

【０００３】ステッピングモータ６により弁体５を回動
させると入口ポート２、３の開口面積が可変されて、入
口ポート２、３から開口部５ｃ、５ｄを通って弁室１ａ
内に流入する冷水、熱水の流量が可変される。When the valve element 5 is rotated by the stepping motor 6, the opening areas of the inlet ports 2 and 3 are changed, and the valve ports 1a are passed from the inlet ports 2 and 3 through the openings 5c and 5d.
The flow rates of cold water and hot water flowing into the inside are varied.

【０００４】弁体５の他端部５ｂ側には混合羽根８が配
置されている。入口ポート２、３から弁室１ａ内に流入
した冷水、熱水はその混合羽根８を通る際に乱流を生じ
て強制的に混合される。On the other end 5b side of the valve element 5, a mixing blade 8 is arranged. The cold water and hot water flowing into the valve chamber 1a from the inlet ports 2 and 3 generate a turbulent flow when passing through the mixing blade 8, and are forcibly mixed.

【０００５】出口ポート４内には、混合羽根８により混
合された冷水と熱水の温度を検知するサーミスタ９が配
置されている。このサーミスタ９の検知信号は電子コン
トローラ１０に出力され、ここで目標温度との偏差量が
求められ、その偏差量に応じた制御信号が電子コントロ
ーラ１０からステッピングモータ６に出力される。A thermistor 9 for detecting the temperature of cold water and hot water mixed by the mixing blade 8 is disposed in the outlet port 4. The detection signal of the thermistor 9 is output to the electronic controller 10, where the deviation from the target temperature is obtained, and a control signal corresponding to the deviation is output from the electronic controller 10 to the stepping motor 6.

【０００６】第１６図に上記混合弁を装備した給湯装置
を示している。１１１は電気温水器、１１２は減圧弁で
ある。電気温水器１１１から配管１１３を通って弁本体
１の入口ポート３に熱水が供給される一方、減圧弁１１
２、配管１１４を介して冷水が弁本体１の入口ポート２
に供給される。入口ポート２、３に供給された冷水と熱
水は、混合羽根８により強制的に混合されて混合水とな
った後、出口ポート４内で検知手段９により直ちに温度
が検出される。検知信号は電子コントローラ１０に出力
され、その電子コントローラ１０からステッピングモー
タ６に制御信号が出力されて目標温度となるように入口
ポート２、３の開口度が可変される。そして目標温度に
調整された混合水が出口ポート４から配管１１５を介し
て各場所に給湯されるというものである。FIG. 16 shows a water heater provided with the mixing valve. 111 is an electric water heater and 112 is a pressure reducing valve. While hot water is supplied from the electric water heater 111 to the inlet port 3 of the valve body 1 through the pipe 113, the pressure reducing valve 11
2. Cold water is supplied to the inlet port 2 of the valve body 1 through the pipe 114.
Supplied to The cold water and the hot water supplied to the inlet ports 2 and 3 are forcibly mixed by the mixing blade 8 to become mixed water, and the temperature is immediately detected by the detecting means 9 in the outlet port 4. The detection signal is output to the electronic controller 10, and a control signal is output from the electronic controller 10 to the stepping motor 6, and the opening degree of the inlet ports 2 and 3 is changed so that the target temperature is reached. Then, the mixed water adjusted to the target temperature is supplied to each place from the outlet port 4 via the pipe 115.

【０００７】[0007]

【発明が解決しようとする課題】しかしながら上記した
ような従来の流体制御弁では、入口ポート２あるいは入
口ポート３のいずれかを閉じた状態のとき、弁体５の外
径と弁室１ａの内径との径クリアランスのすきまを通じ
て出口ポート４に洩れる量が多く、例えば湯水混合せず
に冷水だけ出したい場合でも、湯が漏れ出てなまぬるい
水になったり、熱湯を出したいのに漏れ出る水が混合さ
れた湯になるなどの課題があった。特に入口ポート２、
３に作用する流体圧が高い程、上記の弁内部漏れの量が
増大し、高い流体圧においては実用にならないという課
題があった。また、上記従来の流体制御弁の閉じた側の
入口ポートから出口ポート４への漏れ量を減少させるに
は、弁体５の外径と弁室１ａの内径との径クリアランス
を小さくしなくてはならず、加工精度を要し歩留まりが
悪くなったり、しまりばめになってモータ６の回転駆動
トルクが不足して回転駆動不能になる等の課題があっ
た。However, in the conventional fluid control valve as described above, when either the inlet port 2 or the inlet port 3 is closed, the outer diameter of the valve body 5 and the inner diameter of the valve chamber 1a. There is a large amount that leaks to the outlet port 4 through the clearance of the diameter clearance. For example, even if you want to discharge only cold water without mixing hot and cold water, the water leaks out and becomes lukewarm water, or water that leaks out when you want There were problems such as mixed hot water. Especially the entrance port 2,
As the fluid pressure acting on 3 increases, the amount of the above-mentioned valve internal leakage increases, and there is a problem that the fluid cannot be used at a high fluid pressure. Further, in order to reduce the amount of leakage from the inlet port on the closed side of the conventional fluid control valve to the outlet port 4, the diameter clearance between the outer diameter of the valve body 5 and the inner diameter of the valve chamber 1a need not be reduced. However, there is a problem that the processing accuracy is required and the yield is deteriorated, and the rotational drive torque of the motor 6 is insufficient due to the interference and the rotational drive becomes impossible.

【０００８】本発明は上記課題を解決するものであり、
簡単な構成で特に高い流体圧に対して弁内部漏れの少な
い流量制御を可能にする流体制御弁を提供することを第
一の目的としている。[0008] The present invention is to solve the above problems,
It is a first object of the present invention to provide a fluid control valve having a simple configuration and capable of controlling a flow rate with a small internal leakage of a valve particularly for a high fluid pressure.

【０００９】第二の目的は、簡単な構成で必要駆動トル
クが小さく、かつ弁体周囲のすきま洩れの少ない流量制
御を可能にする流体制御弁を提供することにある。A second object of the present invention is to provide a fluid control valve which has a simple structure, requires a small driving torque, and enables a flow rate control with little leakage around the valve element.

【００１０】第三の目的は、簡単な構成で、複数流体の
高い流量混合比制御を可能にする流体制御弁を提供する
ことにある。A third object of the present invention is to provide a fluid control valve capable of controlling a high flow rate mixing ratio of a plurality of fluids with a simple structure.

【００１１】第四の目的は、簡単な構成で必要駆動トル
クが小さく、複数流体の高い流量混合比制御を可能にす
る流体制御弁を提供することにある。A fourth object of the present invention is to provide a fluid control valve which has a simple structure, requires a small driving torque, and enables high flow rate mixing ratio control of a plurality of fluids.

【００１２】第五の目的は、簡単な構成で必要駆動トル
クがさらに小さく、複数流体の高い流量混合比制御を可
能にする流体制御弁を提供することにある。A fifth object of the present invention is to provide a fluid control valve which has a simple structure, requires less driving torque, and enables high flow rate mixing ratio control of a plurality of fluids.

【００１３】また第六の目的は、簡単な構成で必要駆動
トルクがさらに安定して小さく、複数流体の高い流量混
合比制御を可能にする流体制御弁を提供することにあ
る。It is a sixth object of the present invention to provide a fluid control valve which has a simple structure, requires less stable driving torque, and can control a high flow rate mixing ratio of a plurality of fluids.

【００１４】[0014]

【課題を解決するための手段】上記第一の目的を達成す
るために本発明の流体制御弁は、流入路と流出路を有す
るハウジングと、前記ハウジングのシリンダ内に回動可
能に設けられた略円筒形の側面に入口孔および端面に出
口部を有し、前記ハウジングのシリンダ部と摺動する円
筒部の直径よりも細い直径の軸シール部を有する弁体
と、前記弁体の前記出口部の端面と対向して形成した弁
座と、前記弁体を回転駆動するモータと、前記弁体が軸
方向に移動自在に前記モータの回転を前記弁体に伝達す
る回転動力伝達部を設けたものである。In order to achieve the first object, a fluid control valve according to the present invention is provided with a housing having an inflow passage and an outflow passage, and is rotatably provided in a cylinder of the housing. A valve body having an inlet hole on a substantially cylindrical side surface and an outlet portion on an end surface, a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion sliding with the cylinder portion of the housing; and the outlet of the valve body. A valve seat formed to face the end face of the portion, a motor for driving the valve body to rotate, and a rotational power transmission portion for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction. It is a thing.

【００１５】上記第二の目的を達成するために本発明の
流体制御弁は、流入路と流出路を有するハウジングと、
前記ハウジングのシリンダ内に回動可能に設けられた略
円筒形の側面に入口孔および端面に出口部を有し、前記
ハウジングのシリンダ部と摺動する円筒部の直径よりも
細い直径の軸シール部を有する弁体と、前記弁体の前記
ハウジングとの摺動接触面で入口孔を囲むように形成し
た凸部と、前記弁体の前記出口部の端面と対向して形成
した弁座と、前記弁体を回転駆動するモータと、前記弁
体が軸方向に移動自在に前記モータの回転を前記弁体に
伝達する回転動力伝達部を設けたものである。In order to achieve the second object, a fluid control valve according to the present invention comprises: a housing having an inflow passage and an outflow passage;
A shaft seal having an inlet hole on the substantially cylindrical side surface rotatably provided in the cylinder of the housing and an outlet portion on the end surface, and having a diameter smaller than the diameter of the cylindrical portion sliding on the cylinder portion of the housing; A valve body having a portion, a convex portion formed so as to surround an inlet hole at a sliding contact surface of the valve body with the housing, and a valve seat formed to face an end surface of the outlet portion of the valve body. A motor that rotationally drives the valve element, and a rotational power transmission unit that transmits the rotation of the motor to the valve element so that the valve element can move in the axial direction.

【００１６】上記第三の目的を達成するために本発明の
流体制御弁は、流出路と複数の流入路を有するハウジン
グと、前記ハウジングのシリンダ内に回動可能に設けら
れた略円筒形の側面に複数の入口孔および端面に出口部
を有し、前記ハウジングのシリンダ部と摺動する円筒部
の直径よりも細い直径の軸シール部を有する弁体と、前
記弁体の前記出口部の端面と対向して形成した弁座と、
前記弁体を回転駆動するモータと、前記弁体が軸方向に
移動自在に前記モータの回転を前記弁体に伝達する回転
動力伝達部を設けたものである。In order to achieve the third object, a fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, and a substantially cylindrical rotatably provided in a cylinder of the housing. A valve body having a plurality of inlet holes on a side surface and an outlet portion on an end surface, a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with the cylinder portion of the housing; and A valve seat formed opposite the end face;
A motor for rotating the valve body is provided, and a rotary power transmission unit for transmitting the rotation of the motor to the valve body such that the valve body is movable in the axial direction.

【００１７】上記第四の目的を達成するために本発明の
流体制御弁は、流出路と複数の流入路を有するハウジン
グと、前記ハウジングのシリンダ内に回動可能に設けら
れた略円筒形の側面に複数の入口孔および端面に出口部
を有し、前記ハウジングのシリンダ部と摺動する円筒部
の直径よりも細い直径の軸シール部を有する弁体と、前
記弁体の前記ハウジングとの摺動接触面で複数の入口孔
の個々を囲むように形成した複数の凸部と、前記弁体の
前記出口部の端面と対向して形成した弁座と、前記弁体
を回転駆動するモータと、前記弁体が軸方向に移動自在
に前記モータの回転を前記弁体に伝達する回転動力伝達
部を設けたものである。In order to achieve the fourth object, a fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, and a substantially cylindrical rotatably provided cylinder in the housing. A valve body having a plurality of inlet holes on a side surface and an outlet portion on an end surface, a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with the cylinder portion of the housing, and the housing of the valve body. A plurality of projections formed so as to surround each of the plurality of inlet holes with a sliding contact surface, a valve seat formed to face an end face of the outlet of the valve body, and a motor for rotatingly driving the valve body And a rotary power transmission unit for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction.

【００１８】上記第五の目的を達成するために本発明の
流体制御弁は、流出路と複数の流入路を有するハウジン
グと、前記ハウジングのシリンダ内に回動可能に設けら
れた略円筒形の側面に複数の入口孔および端面に出口部
を有し、前記ハウジングのシリンダ部と摺動する円筒部
の直径よりも細い直径の軸シール部を有する弁体と、前
記弁体の前記出口部の端面と対向して形成した弁座と、
前記弁座と前記弁体端面との間に設けた四フッ化エチレ
ンまたはポリアセタール樹脂等の低摩擦材で形成された
輪環形状部材と、前記弁体を回転駆動するモータと、前
記弁体が軸方向に移動自在に前記モータの回転を前記弁
体に伝達する回転動力伝達部を設けたものである。In order to achieve the fifth object, a fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, and a substantially cylindrical rotatably provided cylinder in the housing. A valve body having a plurality of inlet holes on a side surface and an outlet portion on an end surface, a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with the cylinder portion of the housing; and a valve body having the outlet portion of the valve body. A valve seat formed opposite the end face;
A ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided between the valve seat and the end surface of the valve body, a motor that rotationally drives the valve body, and the valve body A rotary power transmission unit is provided for transmitting the rotation of the motor to the valve body movably in the axial direction.

【００１９】また第六の目的を達成するために本発明の
流体制御弁は、流出路と複数の流入路を有するハウジン
グと、前記ハウジングのシリンダ内に回動可能に設けら
れた略円筒形の側面に複数の入口孔および端面に出口部
を有し、前記ハウジングのシリンダ部と摺動する円筒部
の直径よりも細い直径の軸シール部を有する弁体と、前
記弁体の前記出口部の端面と対向して形成した弁座と、
前記弁座と前記弁体端面との間に複数重ねて設けた四フ
ッ化エチレンまたはポリアセタール樹脂等の低摩擦材で
形成された輪環形状部材と、前記弁体を回転駆動するモ
ータと、前記弁体が軸方向に移動自在に前記モータの回
転を前記弁体に伝達する回転動力伝達部を設けたもので
ある。In order to achieve the sixth object, a fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, and a substantially cylindrical rotatably provided in a cylinder of the housing. A valve body having a plurality of inlet holes on a side surface and an outlet portion on an end surface, a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with the cylinder portion of the housing; and A valve seat formed opposite the end face;
A ring-shaped member formed of a low friction material such as tetrafluoroethylene or polyacetal resin provided in a plurality of layers between the valve seat and the valve body end face, and a motor that rotationally drives the valve body; A rotary power transmission unit for transmitting rotation of the motor to the valve body so that the valve body can move in the axial direction is provided.

【００２０】[0020]

【作用】本発明の流体制御弁は、ハウジングのシリンダ
内に回動可能に設けられた略円筒形の側面に入口孔およ
び端面に出口部を有し、前記ハウジングのシリンダ部と
摺動する円筒部の直径よりも細い直径の軸シール部を有
する弁体と、前記弁体の前記出口部の端面と対向して形
成した弁座と、前記弁体を回転駆動するモータと、前記
弁体が軸方向に移動自在に前記モータの回転を前記弁体
に伝達する回転動力伝達部を設けたことにより、入口孔
にかかる流体圧が高くなるほど、その流体の圧力で弁体
が出口部の端面に形成された弁座に押しつけられるよう
に作用するため、弁体の入口孔以外の弁体周囲のクリア
ランスから出口部に漏れる弁内部漏れが、この弁座部で
抑制される作用が流体圧に応じて高まる。したがって、
簡単な構成でありながら、特に高い流体圧のときも弁内
部漏れの少ない流量制御が可能になる。The fluid control valve according to the present invention has a substantially cylindrical side surface rotatably provided in a cylinder of a housing, an inlet hole on the side surface and an outlet portion on an end surface, and a cylinder sliding on the cylinder portion of the housing. A valve body having a shaft seal portion having a diameter smaller than the diameter of the portion, a valve seat formed to face an end surface of the outlet portion of the valve body, a motor that rotationally drives the valve body, and the valve body includes: By providing a rotational power transmission unit that transmits the rotation of the motor to the valve body so as to be movable in the axial direction, the higher the fluid pressure applied to the inlet hole, the more the pressure of the fluid causes the valve body to move toward the end face of the outlet unit. Since the valve acts so as to be pressed against the formed valve seat, the internal leakage of the valve, which leaks from the clearance around the valve body other than the inlet hole of the valve body to the outlet, is suppressed by the valve seat according to the fluid pressure. Increase. Therefore,
Although having a simple configuration, flow control with little leakage inside the valve can be performed even at a particularly high fluid pressure.

【００２１】また本発明の流体制御弁は、ハウジングの
シリンダ部と摺動する円筒部の直径よりも細い直径の軸
シール部を有する弁体と、前記弁体の前記ハウジングと
の摺動接触面で入口孔を囲むように形成した凸部と、前
記弁体の前記出口部の端面と対向して形成した弁座と、
前記弁体を回転駆動するモータと、前記弁体が軸方向に
移動自在に前記モータの回転を前記弁体に伝達する回転
動力伝達部を設けたことにより、前記凸部がハウジング
との摺動接触面のすきまを小さくするので、弁体外周の
すきまからの洩れが著しく減少できるとともに、摺動接
触面積が減少し、弁体を回転させるのに必要なトルクを
小さくできることに加え、入口孔にかかる流体圧が高く
なるほど、その流体の圧力で弁体が出口部の端面に形成
された弁座に押しつけられるように作用し、低い流体圧
から高い流体圧まで広範囲におよんで弁体周囲のすきま
洩れの少ない流量制御が可能になり、かつ必要駆動トル
クが小さい。Further, the fluid control valve according to the present invention has a valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides on a cylinder portion of a housing, and a sliding contact surface of the valve body with the housing. A convex portion formed so as to surround the inlet hole, and a valve seat formed to face an end surface of the outlet portion of the valve body,
By providing a motor for driving the valve body to rotate and a rotary power transmission unit for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction, the convex portion slides with the housing. Since the clearance of the contact surface is reduced, the leakage from the clearance around the valve body can be significantly reduced, the sliding contact area is reduced, and the torque required to rotate the valve body can be reduced. The higher the fluid pressure, the more the pressure of the fluid causes the valve body to be pressed against the valve seat formed on the end face of the outlet, and the clearance around the valve body covers a wide range from low fluid pressure to high fluid pressure. Flow control with less leakage becomes possible and the required driving torque is small.

【００２２】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記出口部の端面と
対向して形成した弁座と、前記弁体を回転駆動するモー
タと、前記弁体が軸方向に移動自在に前記モータの回転
を前記弁体に伝達する回転動力伝達部を設けたことによ
り、複数の流入路の流体圧が高くなるほど、その流体の
圧力で弁体が出口部側の端面に形成された弁座に押しつ
けられるように作用し、弁体複数の入口孔以外の弁体周
囲のクリアランスから出口部に漏れる弁内部漏れが、流
体圧に応じてこの弁座部で抑制される作用が高まる。し
たがって、簡単な構成でありながら、特に高い流体圧の
ときも弁内部漏れの少なく複数流体の高い流量混合比制
御が可能になる。A fluid control valve according to the present invention includes a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a valve seat formed to face an end face of the outlet portion of the valve body. And a motor for rotating the valve element, and a rotary power transmission unit for transmitting the rotation of the motor to the valve element so that the valve element can move in the axial direction. As the pressure becomes higher, the valve body acts so as to be pressed against the valve seat formed on the end face on the outlet side by the pressure of the fluid, and the valve leaks from the clearance around the valve body other than the plurality of inlet holes to the outlet section. Internal leaks Increases the effect is suppressed by the seat. Therefore, even with a simple configuration, even when the fluid pressure is particularly high, it is possible to control the flow rate of a plurality of fluids with a small amount of leakage inside the valve.

【００２３】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記ハウジングとの
摺動接触面で複数の入口孔の個々を囲むように形成した
複数の凸部と、前記弁体の前記出口部の端面と対向して
形成した弁座と、前記弁体を回転駆動するモータと、前
記弁体が軸方向に移動自在に前記モータの回転を前記弁
体に伝達する回転動力伝達部を設けたことにより、前記
凸部がハウジングとの摺動接触面のすきまを小さくし、
弁体外周のすきまからの洩れが著しく減少できるととも
に、摺動接触面積が減少し、弁体を回転させるのに必要
なトルクを小さくできることに加え、複数の入口孔にか
かる流体圧が高くなるほど、その流体の圧力で弁体が出
口孔側の端面に形成された弁座に押しつけられるように
作用し、低い流体圧から高い流体圧まで広範囲におよん
で複数流体の高い流量混合比制御が可能になり、かつ必
要駆動トルクが小さい。Further, the fluid control valve of the present invention comprises a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a plurality of inlet holes formed in a sliding contact surface between the valve body and the housing. A plurality of convex portions formed so as to surround each of the above, a valve seat formed to face the end face of the outlet portion of the valve body, a motor for rotating and driving the valve body, and the valve body is arranged in the axial direction. By providing a rotational power transmission portion that movably transmits the rotation of the motor to the valve body, the protrusion reduces the clearance of the sliding contact surface with the housing,
Leakage from the clearance around the valve body can be significantly reduced, the sliding contact area is reduced, the torque required to rotate the valve body can be reduced, and as the fluid pressure applied to the plurality of inlet holes increases, The pressure of the fluid acts so that the valve body is pressed against the valve seat formed on the end face on the outlet hole side, enabling high flow rate mixing ratio control of multiple fluids over a wide range from low fluid pressure to high fluid pressure. And the required driving torque is small.

【００２４】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記出口部の端面と
対向して形成した弁座と、前記弁座と前記弁体端面との
間に設けた四フッ化エチレンまたはポリアセタール樹脂
等の低摩擦材で形成された輪環形状部材と、前記弁体を
回転駆動するモータと、前記弁体が軸方向に移動自在に
前記モータの回転を前記弁体に伝達する回転動力伝達部
を設けたことにより、複数の流入路の流体圧が高くなる
ほど、その流体の圧力で弁体が出口部の端面に形成され
た弁座に強く押しつけられるが、前記弁座と前記弁体端
面との間に設けた四フッ化エチレンまたはポリアセター
ル樹脂等の低摩擦材で形成された輪環形状部材が弁体と
弁座のそれぞれに対して滑りやすくかつシール効果を高
めるように作用するため、さらに必要駆動トルクが小さ
く、さらに高い流量混合比制御が可能になる。The fluid control valve according to the present invention also includes a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a valve seat formed to face an end face of the outlet portion of the valve body. A ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided between the valve seat and the valve body end face; a motor for rotating the valve body; and the valve By providing a rotational power transmission unit that transmits the rotation of the motor to the valve body so that the body is freely movable in the axial direction, the higher the fluid pressure in the plurality of inflow paths, the more the pressure of the fluid causes the valve body to move to the outlet unit. Press firmly on the valve seat formed on the end face of However, the annular member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided between the valve seat and the valve body end face slides on each of the valve body and the valve seat. Since it is easy to operate and acts to enhance the sealing effect, the required driving torque is further reduced, and a higher flow rate mixing ratio control becomes possible.

【００２５】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記出口部の端面と
対向して形成した弁座と、前記弁座と前記弁体端面との
間に複数重ねて設けた四フッ化エチレンまたはポリアセ
タール樹脂等の低摩擦材で形成された輪環形状部材と、
前記弁体を回転駆動するモータと、前記弁体が軸方向に
移動自在に前記モータの回転を前記弁体に伝達する回転
動力伝達部を設けたことにより、複数の流入路の流体圧
が高くなるほど、その流体の圧力で弁体が出口部の端面
に形成された弁座側に強く押しつけられるが、前記弁座
と前記弁体端面との間に複数枚重ねて設けた四フッ化エ
チレンまたはポリアセタール樹脂等の低摩擦材で形成さ
れた輪環形状部材により、最も滑りやすい輪環状部材同
士の部分が低摩擦で軽く摺動し、滑りやすくかつシール
効果を高める作用をするため、必要駆動トルクがさらに
安定して小さくでき、小型・低コストで、高速応答の高
い流量混合比制御を実現する。Further, the fluid control valve of the present invention comprises a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a valve seat formed to face an end face of the outlet portion of the valve body. And, a ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided in a plurality of layers between the valve seat and the valve body end face,
By providing a motor that rotationally drives the valve element and a rotational power transmission unit that transmits the rotation of the motor to the valve element so that the valve element can move in the axial direction, the fluid pressure in the plurality of inflow paths is increased. Indeed, the valve body is strongly pressed against the valve seat side formed on the end face of the outlet portion by the pressure of the fluid, but ethylene tetrafluoride or a plurality of sheets provided between the valve seat and the valve body end face are stacked. Due to the ring-shaped member made of low-friction material such as polyacetal resin, the most slippery ring-shaped members slide lightly with low friction, making it slippery and increasing the sealing effect. However, it is possible to realize a small-sized, low-cost, high-speed response and high flow rate mixing ratio control.

【００２６】[0026]

【実施例】以下本発明の実施例を図面にもとづいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

【００２７】図１は本発明の第一の実施例を示す流体制
御弁１１の構成図であり、図２（ａ）〜（ｃ）は図１の
Ａ−Ａ断面図であり、図３は弁体１５の斜視図である。
同図において１２はハウジングであり、流入路１３と流
出路１４を有している。１５はハウジング１２内に回動
可能に設けらた略円筒形の弁体であり、その弁体１５は
側面に入口孔１６および端面に出口部１７を有し、ハウ
ジング１２のシリンダ部１８と摺動する円筒部１９の直
径よりも細い直径の軸シール部２０を有し内部に流入路
１３と流出路１４とを連通ないし遮断する流路２１が形
成されている。また弁体１５の流路２１の出口部１７の
端面と対向して弁座２２が形成され、弁体１５の出口部
１７の端面とは反対側の端部に、ステッピングモータ２
３の出力軸２４を挿入する軸穴２５が形成されている。
軸穴２５の形状は図３のように円形の円弧部分２カ所を
対称的に削り取った形をしており、かつ軸穴２５と出力
軸２４との間には適度のクリアランス２６が設けてあ
り、弁体１５はステッピングモータ２３の出力軸２４の
回転にともなって回転されるが、弁体１５の軸方向には
弁座２２に当たる位置からモータ２３の出力軸２４の先
端が軸穴２５の底に当たる位置までは移動自在である。FIG. 1 is a structural view of a fluid control valve 11 showing a first embodiment of the present invention, FIGS. 2 (a) to 2 (c) are sectional views taken along the line AA of FIG. 1, and FIG. FIG. 3 is a perspective view of a valve body 15.
In the figure, reference numeral 12 denotes a housing, which has an inflow path 13 and an outflow path 14. Reference numeral 15 denotes a substantially cylindrical valve body rotatably provided in the housing 12. The valve body 15 has an inlet hole 16 on a side surface and an outlet portion 17 on an end surface, and slides with a cylinder portion 18 of the housing 12. A flow path 21 having a shaft seal portion 20 having a diameter smaller than the diameter of the moving cylindrical portion 19 and communicating or blocking the inflow path 13 and the outflow path 14 is formed therein. Further, a valve seat 22 is formed facing the end face of the outlet 17 of the flow path 21 of the valve body 15, and the stepping motor 2 is provided at the end opposite to the end face of the outlet 17 of the valve body 15.
A shaft hole 25 into which the third output shaft 24 is inserted is formed.
The shape of the shaft hole 25 is a shape obtained by symmetrically shaving two circular arc portions as shown in FIG. 3, and an appropriate clearance 26 is provided between the shaft hole 25 and the output shaft 24. The valve element 15 is rotated in accordance with the rotation of the output shaft 24 of the stepping motor 23, but the tip of the output shaft 24 of the motor 23 is positioned at the bottom of the shaft hole 25 in the axial direction of the valve element 15 from a position corresponding to the valve seat 22. Is movable up to the position corresponding to.

【００２８】また弁体１５の軸シール部２０はリング状
の溝２７が形成されており、その溝２７にＸ字形断面の
弾性シール部材２８が設けられている。A ring-shaped groove 27 is formed in the shaft seal portion 20 of the valve body 15, and an elastic seal member 28 having an X-shaped cross section is provided in the groove 27.

【００２９】またモータ２３は、流体制御弁１１のハウ
ジング１２にビス２９、３０により取り付けられてい
る。The motor 23 is attached to the housing 12 of the fluid control valve 11 by screws 29 and 30.

【００３０】また、弁体１５の軸穴２５の外側に弁体１
５の回転範囲角度を規制する回転角規制部材３１が装着
されている。Further, the valve element 1 is provided outside the shaft hole 25 of the valve element 15.
The rotation angle regulating member 31 for regulating the rotation range angle of No. 5 is mounted.

【００３１】以上の構成において本実施例の動作につい
て説明する。図２（ａ）は弁閉止状態を示したものであ
り、流入路１３に連通する流路２１は、流出路１４とは
連通せず、弁体１５の円筒部１９とハウジング１２のシ
リンダ部１８とのすきまを微小にして流体の漏れが防止
されている。図２（ｂ）は弁半開状態、図２（ｃ）は弁
全開状態をそれぞれ示したものである。図１で示したよ
うに略Ｘ字形断面の弾性シール部材２８は、流入路１３
から流出路１４に流れるハウジング１２の内部の流体
が、ハウジング１２の外部に漏れないよう、断面形状が
Ｘ字形をしたゴムのリングで、弁体１５の溝２７とハウ
ジング１２の内面にそれぞれ密着する２本のシール帯が
形成される。すなわち１個のシール部材２８で、実質的
には二重のシールができ、高い外部漏れ防止効果が得ら
れる。しかも、軸シール部２０をハウジング１２のシリ
ンダ部１８と摺動する円筒部１９の直径よりも細い直径
に形成したことにより、シール長さが短く、シール部材
２８のハウジング１２との接触面積も少ないため、信頼
性の高い弁外部漏れ防止効果に加えて回転摩擦抵抗の大
幅な低減効果が得られる。さらに０リングによるシール
のように円形断面を押しつぶす容積圧縮変形と異なり、
Ｘ形断面を押し挟むような曲げ変形によるシールなの
で、同じシールつぶししろの場合でも変形に要する力
は、０リングに較べてＸ字形シール部材２８の方が圧倒
的に小さい。すなわち、シール部材２８とハウジング１
２および溝２７との接触摺動摩擦力が小さくなり、弁体
１５を回転駆動するのに必要なトルクを大幅に低減でき
る。実験した結果によると、０リングに対しＸリング
は、５分の１ないし６分の１のトルクで弁体１５を駆動
することができた。The operation of the present embodiment in the above configuration will be described. FIG. 2A shows the valve closed state, in which the flow path 21 communicating with the inflow path 13 does not communicate with the outflow path 14, and the cylindrical portion 19 of the valve body 15 and the cylinder portion 18 of the housing 12 are not shown. The clearance between them is made very small to prevent fluid leakage. FIG. 2B shows a valve half-open state, and FIG. 2C shows a valve fully open state. As shown in FIG. 1, the elastic seal member 28 having a substantially X-shaped cross section is
In order to prevent the fluid inside the housing 12 flowing from the outside into the outflow passage 14 from leaking out of the housing 12, the rubber ring having an X-shaped cross section closely contacts the groove 27 of the valve body 15 and the inner surface of the housing 12. Two seal bands are formed. That is, substantially double sealing can be achieved with one sealing member 28, and a high effect of preventing external leakage can be obtained. Moreover, since the shaft seal portion 20 is formed to have a diameter smaller than the diameter of the cylindrical portion 19 that slides on the cylinder portion 18 of the housing 12, the seal length is short and the contact area of the seal member 28 with the housing 12 is small. Therefore, in addition to a highly reliable valve leakage prevention effect, a significant reduction effect of rotational friction resistance can be obtained. Furthermore, unlike volume compression deformation, which crushes a circular cross section like a seal with an O-ring,
Since the seal is formed by bending deformation such that the X-shaped cross section is pinched, the force required for the deformation of the X-shaped seal member 28 is overwhelmingly smaller than that of the O-ring even when the seal is crushed. That is, the sealing member 28 and the housing 1
The frictional force of contact sliding with the groove 2 and the groove 27 is reduced, and the torque required for driving the valve body 15 to rotate can be greatly reduced. According to the results of the experiment, the X-ring was able to drive the valve body 15 with a torque of 1/5 to 1/6 of the O-ring.

【００３２】また０リングの場合は、ハウジングおよび
溝部との接触シール部にグリス等の潤滑剤を塗布してい
ても、そのグリス保持ができにくいので、弁体を長い期
間動作させなかったりすると、０リングとハウジング１
２および弁体１５が固着して作動しずらくなるなどの不
都合があった。これに対してＸ形シール部材２８の場合
は、Ｘ形断面の窪み部がグリスだまりとなってグリス等
の潤滑剤が保持される。したがって、上記のような固着
の問題も解消され、長期間、安定して弁体１５を軽く滑
らかに駆動でき、耐久信頼性も向上できる。In the case of the O-ring, even if a lubricant such as grease is applied to the contact seal portion between the housing and the groove, it is difficult to hold the grease. Therefore, if the valve is not operated for a long period of time, O-ring and housing 1
2 and the valve body 15 are stuck to make it difficult to operate. On the other hand, in the case of the X-shaped seal member 28, the recessed portion of the X-shaped cross section becomes a grease pool, and a lubricant such as grease is held. Therefore, the problem of sticking as described above can be solved, and the valve element 15 can be driven lightly and smoothly for a long period of time, and the durability reliability can be improved.

【００３３】また、軸シール部２０をハウジング１２の
シリンダ部１８と摺動する円筒部１９の直径よりも細い
直径に形成し、また、正逆転回転可能なモータ２３の出
力軸２４は、円形の円弧部分２カ所を対称的に削り取っ
た断面形状で弁体１５の同じく円形の円弧部分２カ所を
対称的に削り取った断面形状の軸穴２５に挿入され、ク
リアランス２６を有し、弁体１５が軸方向に移動自在に
モータ２３の回転を弁体１５に伝達する回転動力伝達部
３２とし、弁体１５の流路２１の出口部１７の端面と対
向して弁座２２を形成した構成なので、弁体１５の側面
の入口孔１６にかかる流体圧により、円筒部１９の断面
積と軸シール部２０の断面積の差と前記流体圧１次圧の
積による力から円筒部の断面積と流体２次圧の積を差し
引いた力で弁体１５を弁座２２に押しつけるように作用
する。したがって、流入路１３の圧力が高くなるほど、
その流体の圧力で弁体１５が出口部１７の端面に形成さ
れた弁座２２に押しつけられるように作用し、弁体１５
の入口孔１６以外の弁体周囲のクリアランスから出口部
１７に漏れ出ようとしても、弁体１５の出口部１７の端
面が弁座２２に押しつけられて漏れ出るすきまが閉ざさ
れるので、簡単な構成でありながら、特に高い流体圧の
ときも弁内部漏れの少ない流量制御が可能になる。The shaft seal portion 20 is formed to have a diameter smaller than the diameter of the cylindrical portion 19 which slides on the cylinder portion 18 of the housing 12, and the output shaft 24 of the motor 23 capable of rotating forward and reverse is circular. The valve body 15 is inserted into a shaft hole 25 having a cross-sectional shape obtained by symmetrically removing two circular arc portions of the valve body 15, and having a clearance 26. Since the rotation power transmission portion 32 transmits the rotation of the motor 23 to the valve body 15 movably in the axial direction, and the valve seat 22 is formed facing the end face of the outlet portion 17 of the flow path 21 of the valve body 15, The fluid pressure applied to the inlet hole 16 on the side surface of the valve body 15 causes the difference between the cross-sectional area of the cylindrical portion 19 and the cross-sectional area of the shaft seal portion 20 and the cross-sectional area of the cylindrical portion and fluid Valve 1 with the force less the product of the secondary pressure The acts so as to press the valve seat 22. Therefore, as the pressure in the inflow passage 13 increases,
With the pressure of the fluid, the valve body 15 acts so as to be pressed against a valve seat 22 formed on the end face of the outlet portion 17, and the valve body 15
Even if an attempt is made to leak from the clearance around the valve body other than the inlet hole 16 to the outlet part 17, the end face of the outlet part 17 of the valve body 15 is pressed against the valve seat 22 to close the leaking gap, so that a simple configuration is achieved. However, even when the fluid pressure is particularly high, the flow rate can be controlled with less leakage inside the valve.

【００３４】以上述べたように本実施例によれば、軸シ
ール部２０をハウジング１２のシリンダ部１８と摺動す
る円筒部１９の直径よりも細い直径に形成し、弁体１５
が軸方向に移動自在にモータ２３の回転を弁体１５に伝
達する回転動力伝達部３２とし、弁体１５の流路２１の
出口部１７の端面と対向して弁座２２を形成した構成な
ので、流入路１３の圧力が高くなるほど、その流体の圧
力で弁体１５が出口部１７の端面に形成された弁座２２
に押しつけられるように作用し、弁体１５の入口孔１６
以外の弁体周囲のクリアランスから出口部１７に漏れる
弁内部漏れを、この弁座部で抑制する作用が流体圧に応
じて高まるので、簡単な構成でありながら、高い流体圧
のときも弁内部漏れの少ない流量制御が可能な流体制御
弁１１を実現できる。As described above, according to the present embodiment, the diameter of the shaft seal portion 20 is formed to be smaller than the diameter of the cylindrical portion 19 which slides on the cylinder portion 18 of the housing 12, and the valve body 15 is formed.
Is a rotary power transmission portion 32 that transmits the rotation of the motor 23 to the valve body 15 so as to be movable in the axial direction, and the valve seat 22 is formed facing the end face of the outlet 17 of the flow path 21 of the valve body 15. As the pressure in the inflow passage 13 increases, the valve body 15 is formed on the end face of the outlet 17 by the pressure of the fluid.
To the inlet hole 16 of the valve body 15.
The effect of suppressing the internal leakage of the valve leaking from the clearance around the valve body to the outlet portion 17 from the valve body at the valve seat portion increases in accordance with the fluid pressure. The fluid control valve 11 capable of controlling the flow rate with less leakage can be realized.

【００３５】図４は本発明の第二の実施例を示す流体制
御弁３３の構成図であり、図５（ａ）〜（ｃ）は図４の
Ｂ−Ｂ断面図である。同図において３４はハウジングで
あり、流入路３５と流出路３６を有している。３７はハ
ウジング３４内に回動可能に設けらた略円筒形の弁体で
あり、その弁体３７は側面に入口孔３８および端面に出
口部３９を有し、ハウジング３４のシリンダ部４０と摺
動する円筒部４１の直径よりも細い直径の軸シール部４
２を有し内部に流入路３５と流出路３６とを連通ないし
遮断する流路４３が形成されている。弁体５３の側面の
入口孔３８は、ハウジング３４のシリンダ部４０との摺
動接触面４４に臨んで設けられ、この入口孔３８を囲む
ように凸部４５が、弁体３７と一体的に形成されてい
る。かつ弁体３７を回転するとその入口孔３８とハウジ
ング３４の流入路３５とが連通する位置に設けられてい
る。また弁体３７の流路４３の出口部３９の端面と対向
して弁座４６が形成され、弁体３７の出口部３９の端面
とは反対側の端部に、ステッピングモータ４７の出力軸
４８を挿入する軸穴４９が形成されている。軸穴４９の
形状は図３のように円形の円弧部分２カ所を対称的に削
り取った形をしており、かつ軸穴４９と出力軸４８との
間には適度のクリアランス５０が設けてあり、弁体３７
はステッピングモータ４７の出力軸４８の回転にともな
って回転されるが、弁体３７の軸方向には弁座２３に当
たる位置からモータ４７の出力軸４８の先端が軸穴４９
の底に当たる位置までは移動自在である。FIG. 4 is a structural view of a fluid control valve 33 according to a second embodiment of the present invention, and FIGS. 5 (a) to 5 (c) are sectional views taken along line BB of FIG. In the figure, a housing 34 has an inflow passage 35 and an outflow passage 36. Reference numeral 37 denotes a substantially cylindrical valve body rotatably provided in the housing 34. The valve body 37 has an inlet hole 38 on a side surface and an outlet portion 39 on an end surface, and slides with a cylinder portion 40 of the housing 34. The shaft seal portion 4 having a diameter smaller than the diameter of the moving cylindrical portion 41
2, a flow path 43 is formed inside the flow path 43 for communicating or blocking the inflow path 35 and the outflow path 36. The inlet hole 38 on the side surface of the valve body 53 is provided facing the sliding contact surface 44 of the housing 34 with the cylinder portion 40, and a convex portion 45 is formed integrally with the valve body 37 so as to surround the inlet hole 38. Is formed. When the valve body 37 is rotated, the inlet hole 38 and the inflow passage 35 of the housing 34 communicate with each other. Further, a valve seat 46 is formed facing the end face of the outlet 39 of the flow path 43 of the valve body 37, and the output shaft 48 of the stepping motor 47 is provided at the end opposite to the end face of the outlet 39 of the valve body 37. Is formed. The shape of the shaft hole 49 is such that two circular arc portions are symmetrically cut off as shown in FIG. 3, and an appropriate clearance 50 is provided between the shaft hole 49 and the output shaft 48. , Valve element 37
Is rotated in accordance with the rotation of the output shaft 48 of the stepping motor 47, but the tip of the output shaft 48 of the motor 47 is
It is movable up to the position where it hits the bottom.

【００３６】また弁体３７の軸シール部４２はリング状
の溝５１が形成されており、その溝５１にＸ字形断面の
弾性シール部材５２が設けられている。A ring-shaped groove 51 is formed in the shaft seal portion 42 of the valve body 37, and an elastic seal member 52 having an X-shaped cross section is provided in the groove 51.

【００３７】またモータ４７は、流体制御弁３３のハウ
ジング３４にビス５３、５４により取り付けられてい
る。The motor 47 is attached to the housing 34 of the fluid control valve 33 by screws 53 and 54.

【００３８】また、弁体３７の軸穴４９の外側に弁体３
７の回転範囲角度を規制する回転角規制部材５５が装着
されている。The valve body 3 is provided outside the shaft hole 49 of the valve body 37.
7, a rotation angle regulating member 55 for regulating the rotation range angle is mounted.

【００３９】以上の構成において本実施例の動作につい
て説明する。図５（ａ）は弁閉止状態を示したものであ
り、流入路３５に連通する流路４３は、流出路３６とは
連通せず、入口孔３８を囲むように形成された凸部４５
によって、ハウジング３４とのすきまを微小にして流体
の内部漏れが防止されている。図５（ｂ）は弁半開状
態、図５（ｃ）は弁全開状態をそれぞれ示したものであ
る。なおここで、凸部４５は弁体３７と一体的に高分子
材料で成型できるので加工生産性もよく、ハウジング３
４とは部分的な小さい接触面積なので、弁体３７の回動
時に必要な駆動トルクを小さく押さえることができる。The operation of this embodiment with the above configuration will be described. FIG. 5A shows the valve closed state, in which the flow path 43 communicating with the inflow path 35 does not communicate with the outflow path 36, and a convex portion 45 formed so as to surround the inlet hole 38.
Thereby, the clearance between the housing 34 and the housing 34 is reduced to prevent internal leakage of the fluid. FIG. 5B shows a valve half-open state, and FIG. 5C shows a valve fully open state. Here, since the convex portion 45 can be molded from a polymer material integrally with the valve body 37, the processing productivity is good, and the housing 3
Since 4 is a small contact area, the driving torque required for rotating the valve body 37 can be suppressed to a small value.

【００４０】図４で示した略Ｘ字形断面の弾性シール部
材５２は、流入路３５から流出路３６に流れるハウジン
グ３４の内部の流体が、ハウジング３４の外部に漏れな
いよう、断面形状がＸ字形をしたゴムのリングで、弁体
３７の溝５１とハウジング３４の内面にそれぞれ密着す
る２本のシール帯が形成される。すなわち１個のシール
部材５２で、実質的には二重のシールができ、高い外部
漏れ防止効果が得られる。しかも、軸シール部４２をハ
ウジング３４のシリンダ部４０と摺動する円筒部４１の
直径よりも細い直径に形成したことにより、シール長さ
が短く、シール部材５２のハウジング３４との接触面積
も少ないため、信頼性の高い弁外部漏れ防止効果に加え
て回転摩擦抵抗の大幅な低減効果が得られる。さらに０
リングによるシールのように円形断面を押しつぶす容積
圧縮変形と異なり、Ｘ形断面を押し挟むような曲げ変形
によるシールなので、同じシールつぶししろの場合でも
変形に要する力は、０リングに較べてＸ字形シール部材
５２の方が圧倒的に小さい。すなわち、シール部材５２
とハウジング３４および溝５１との接触摺動摩擦力が小
さくなり、弁体３７を回転駆動するのに必要なトルクを
大幅に低減できる。実験した結果によると、０リングに
対しＸリングは、５分の１ないし６分の１のトルクで弁
体３７を駆動することができた。The elastic seal member 52 having a substantially X-shaped cross section shown in FIG. 4 has an X-shaped cross section so that the fluid inside the housing 34 flowing from the inflow passage 35 to the outflow passage 36 does not leak outside the housing 34. The two seal bands are formed by the rubber ring described above and in close contact with the groove 51 of the valve body 37 and the inner surface of the housing 34, respectively. That is, substantially double sealing can be achieved with one sealing member 52, and a high effect of preventing external leakage can be obtained. Moreover, since the shaft seal portion 42 is formed to have a diameter smaller than the diameter of the cylindrical portion 41 that slides on the cylinder portion 40 of the housing 34, the seal length is short, and the contact area of the seal member 52 with the housing 34 is small. Therefore, in addition to a highly reliable valve leakage prevention effect, a significant reduction effect of rotational friction resistance can be obtained. Further 0
Unlike a volume compression deformation that crushes a circular cross section like a seal with a ring, it is a seal by bending deformation that squeezes an X-shaped cross section. The seal member 52 is overwhelmingly small. That is, the sealing member 52
The contact sliding frictional force between the valve body 37 and the housing 34 and the groove 51 is reduced, and the torque required for driving the valve body 37 to rotate can be greatly reduced. According to the results of the experiment, the X-ring was able to drive the valve body 37 with 1/5 to 1/6 of the torque compared to the O-ring.

【００４１】また０リングの場合は、ハウジングおよび
溝部との接触シール部にグリス等の潤滑剤を塗布してい
ても、そのグリス保持ができにくいので、弁体を長い期
間動作させなかったりすると、０リングとハウジング３
４および弁体３７が固着して作動しずらくなるなどの不
都合があった。これに対してＸ形シール部材５２の場合
は、Ｘ形断面の窪み部がグリスだまりとなってグリス等
の潤滑剤が保持される。したがって、上記のような固着
の問題も解消され、長期間、安定して弁体３７を軽く滑
らかに駆動でき、耐久信頼性も向上できる。In the case of the O-ring, even if a lubricant such as grease is applied to the contact seal portion between the housing and the groove, it is difficult to hold the grease. Therefore, if the valve is not operated for a long period of time, O-ring and housing 3
4 and the valve body 37 are stuck and it becomes difficult to operate. On the other hand, in the case of the X-shaped seal member 52, the recessed portion of the X-shaped cross section becomes a grease pool, and a lubricant such as grease is held. Therefore, the problem of sticking as described above is also solved, and the valve element 37 can be driven lightly and smoothly stably for a long period of time, and the durability reliability can be improved.

【００４２】また、軸シール部４２をハウジング３４の
シリンダ部４０と摺動する円筒部４１の直径よりも細い
直径に形成し、また、正逆転回転可能なモータ４７の出
力軸４８は、円形の円弧部分２カ所を対称的に削り取っ
た断面形状で弁体３７の同じく円形の円弧部分２カ所を
対称的に削り取った断面形状の軸穴４９に挿入され、ク
リアランス５０を有し、弁体３７が軸方向に移動自在に
モータ４７の回転を弁体３７に伝達する回転動力伝達部
５６とし、弁体３７の流路４３の出口部３９の端面と対
向して弁座４６を形成した構成なので、弁体３７の側面
の入口孔３８にかかる流体圧により、円筒部４１の断面
積と軸シール部４２の断面積の差と前記流体圧１次圧の
積による力から円筒部の断面積と流体２次圧の積を差し
引いた力で弁体３７を弁座４６に押しつけるように作用
する。したがって、流入路３５の圧力が高くなるほど、
その流体の圧力で弁体３７が出口部３９の端面に形成さ
れた弁座４６に押しつけられるように作用し、弁体３７
の入口孔３８以外の弁体周囲のクリアランスから出口部
３９に漏れ出ようとしても、弁体３７の出口部３９の端
面が弁座４６に押しつけられて漏れ出るすきまが閉ざさ
れるので、簡単な構成でありながら、高い流体圧のとき
も弁内部漏れの少ない流量制御が可能になる。The shaft seal portion 42 is formed to have a diameter smaller than the diameter of the cylindrical portion 41 that slides with the cylinder portion 40 of the housing 34, and the output shaft 48 of the motor 47 that can rotate forward and reverse is circular. The valve body 37 is inserted into a shaft hole 49 having a cross-sectional shape obtained by symmetrically shaping two circular arc portions of the valve body 37, which has a clearance 50. Since the rotation power transmission portion 56 transmits the rotation of the motor 47 to the valve body 37 so as to be movable in the axial direction, and the valve seat 46 is formed opposite to the end face of the outlet 39 of the flow path 43 of the valve body 37, The fluid pressure applied to the inlet hole 38 on the side surface of the valve body 37 causes the difference between the cross-sectional area of the cylindrical portion 41 and the cross-sectional area of the shaft seal portion 42, and the cross-sectional area of the cylindrical portion and the fluid Valve body 3 with force less the product of secondary pressure The acts so as to press the valve seat 46. Therefore, as the pressure in the inflow passage 35 increases,
The valve body 37 acts so as to be pressed against a valve seat 46 formed on the end face of the outlet portion 39 by the pressure of the fluid.
, The end face of the outlet portion 39 of the valve body 37 is pressed against the valve seat 46 to close the leaking gap. However, even when the fluid pressure is high, the flow rate can be controlled with less leakage inside the valve.

【００４３】また上記の構成作用に加えて弁体３７の入
口孔３８を囲む凸部４５を設けたことにより、凸部４５
がハウジング３４との摺動接触面４４のすきまを小さく
し、弁体３７の外周のすきまからの漏れがさらに減少
し、弁内部漏れ量を極小にでき、この凸部４５の内部漏
れ防止作用と前記弁座４６による弁内部漏れ防止作用と
の２重の内部漏れ防止構成により、流入路３５の流体圧
が低圧から高圧まで広い範囲にわたって、優れた内部漏
れ防止効果が得られる。Further, in addition to the above-described construction, the provision of the convex portion 45 surrounding the inlet hole 38 of the valve body 37 allows the convex portion 45 to be formed.
Reduces the clearance of the sliding contact surface 44 with the housing 34, further reduces leakage from the clearance on the outer periphery of the valve body 37, and minimizes the amount of leakage inside the valve. Due to the double internal leakage prevention configuration with the valve internal leakage prevention function of the valve seat 46, an excellent internal leakage prevention effect is obtained over a wide range of fluid pressure in the inflow passage 35 from low pressure to high pressure.

【００４４】また、弁体３７に設けられたその凸部４５
により、摺動接触面積が減少し、弁体３７を回転させる
のに必要な駆動トルクをさらに小さくでき、極めて軽く
滑らかに回転操作することができる。Further, the convex portion 45 provided on the valve body 37 is provided.
Thereby, the sliding contact area is reduced, the driving torque required to rotate the valve body 37 can be further reduced, and the rotation operation can be performed extremely lightly and smoothly.

【００４５】以上述べたように本実施例によれば、軸シ
ール部４２をハウジング３４のシリンダ部４０と摺動す
る円筒部４１の直径よりも細い直径に形成し、弁体３７
が軸方向に移動自在にモータ４７の回転を弁体３７に伝
達する回転動力伝達部５６とし、弁体３７の流路４３の
出口部３９の端面と対向して弁座４６を形成し、さらに
弁体３７のハウジング３４との摺動接触面４４で入口孔
３８を囲むように凸部４５形成した構成なので、凸部４
５がハウジング３４との摺動接触面４４のすきまを小さ
くするので、弁体３７外周のすきまからの洩れが著しく
減少できるとともに、摺動接触面積が減少し、弁体３７
を回転させるのに必要なトルクを小さくできることに加
え、入口孔３８にかかる流体圧が高くなるほど、その流
体の圧力で弁体３７が出口部３９の端面に形成された弁
座４６に押しつけられるように作用し、低い流体圧から
高い流体圧まで広範囲におよんで弁体３７周囲のすきま
洩れの少ない流量制御が可能になり、かつ必要駆動トル
クが小さい流体制御弁３３を実現できる。As described above, according to this embodiment, the shaft seal portion 42 is formed to have a diameter smaller than the diameter of the cylindrical portion 41 that slides on the cylinder portion 40 of the housing 34, and the valve body 37
Is a rotational power transmitting portion 56 that transmits the rotation of the motor 47 to the valve body 37 so as to be movable in the axial direction, and forms a valve seat 46 facing the end face of the outlet 39 of the flow path 43 of the valve body 37. Since the convex portion 45 is formed so as to surround the inlet hole 38 at the sliding contact surface 44 of the valve body 37 with the housing 34, the convex portion 4
5 reduces the clearance of the sliding contact surface 44 with the housing 34, so that leakage from the clearance on the outer periphery of the valve body 37 can be significantly reduced, and the sliding contact area decreases, and the valve body 37
In addition to reducing the torque required to rotate the valve, the valve 37 is pressed against the valve seat 46 formed on the end face of the outlet 39 by the pressure of the fluid as the fluid pressure applied to the inlet hole 38 increases. Thus, the flow rate control with little clearance leakage around the valve element 37 can be performed over a wide range from low fluid pressure to high fluid pressure, and the fluid control valve 33 with a small required driving torque can be realized.

【００４６】図６は、本発明の第三の実施例を示す流体
制御弁５７の構成図であり、図７（ａ）〜（ｄ）は図６
のＣ−Ｃ断面図である。同図において５８はハウジング
であり、複数の流入路である湯側流入路５９と水側流入
路６０および流出路６１を有している。６２はハウジン
グ５８内に回動可能に設けらた略円筒形の弁体であり、
その弁体６２は側面に複数の入口孔６３、６４および端
面に出口部６５を有し、ハウジング５８のシリンダ部６
６と摺動する円筒部６７の直径よりも細い直径の軸シー
ル部６８を有し内部に複数の流入路５９、６０と流出路
６１とを連通ないし遮断する流路６９が形成されてい
る。弁体６２側面の複数の入口孔６３、６４は、弁体６
２を回転すると湯側入口孔６３と湯側流入路５９とが連
通ないし遮断され、水側入口孔６４と水側流入路６０と
が遮断ないし連通する位置に設けられている。また弁体
６２の流路６９の出口部６５の端面と対向して弁座７０
が形成され、弁体６２の出口部６５の端面とは反対側の
端部に、ステッピングモータ７１の出力軸７２を挿入す
る軸穴７３が形成されている。軸穴７３の形状は図８の
ように円形の円弧部分２カ所を対称的に削り取った形を
しており、かつ軸穴７３と出力軸７２との間には適度の
クリアランス７４が設けてあり、弁体６２はステッピン
グモータ７１の出力軸７２の回転にともなって回転され
るが、弁体６２の軸方向には弁座７０に当たる位置から
モータ７１の出力軸７２の先端が軸穴７３の底に当たる
位置までは移動自在である。FIG. 6 is a block diagram of a fluid control valve 57 according to a third embodiment of the present invention, and FIGS.
It is CC sectional drawing of. In the figure, reference numeral 58 denotes a housing, which has a plurality of inflow paths, that is, a hot water side inflow path 59, a water side inflow path 60, and an outflow path 61. Reference numeral 62 denotes a substantially cylindrical valve body rotatably provided in the housing 58,
The valve body 62 has a plurality of inlet holes 63 and 64 on the side surface and an outlet portion 65 on the end surface.
6 has a shaft seal portion 68 having a diameter smaller than the diameter of the cylindrical portion 67 that slides, and has a flow passage 69 formed therein for communicating or blocking the plurality of inflow passages 59 and 60 and the outflow passage 61. The plurality of inlet holes 63 and 64 on the side surface of the valve body 62
When the rotary shaft 2 is rotated, the hot water side inlet hole 63 and the hot water side inflow path 59 are communicated or blocked, and the water side inlet hole 64 and the water side inflow path 60 are provided at a position where the water side inflow path 60 is blocked or communicated. The valve seat 70 faces the end face of the outlet 65 of the flow path 69 of the valve body 62.
A shaft hole 73 into which the output shaft 72 of the stepping motor 71 is inserted is formed at the end of the valve body 62 opposite to the end surface of the outlet 65. The shape of the shaft hole 73 is such that two circular arc portions are symmetrically cut off as shown in FIG. 8, and an appropriate clearance 74 is provided between the shaft hole 73 and the output shaft 72. The valve body 62 is rotated in accordance with the rotation of the output shaft 72 of the stepping motor 71. Is movable up to the position corresponding to.

【００４７】また弁体６２の軸シール部６８はリング状
の溝７５が形成されており、その溝７５にＸ字形断面の
弾性シール部材７６が設けられている。Further, a ring-shaped groove 75 is formed in the shaft seal portion 68 of the valve body 62, and an elastic seal member 76 having an X-shaped cross section is provided in the groove 75.

【００４８】またモータ７１は、流体制御弁５７のハウ
ジング５８にビス７７、７８により取り付けられてい
る。The motor 71 is attached to the housing 58 of the fluid control valve 57 by screws 77 and 78.

【００４９】また、弁体６２の軸穴７３の外側に弁体６
２の回転範囲角度を規制する回転角規制部材７９が装着
されている。The valve body 6 is provided outside the shaft hole 73 of the valve body 62.
The rotation angle restricting member 79 for restricting the rotation range angle of No. 2 is mounted.

【００５０】以上の構成において本実施例の動作につい
て説明する。図７（ａ）は湯側入口孔６３を全開し、水
側入口孔６４を全閉にした状態を示したものであり、水
側流入路６０と流出路６１とは連通せず、ハウジング５
８のシリンダ部６６と弁体６２の円筒部６７とのすきま
を微小にして水側の内部漏れが防止されている。図７
（ｂ）は湯側入口孔６３および水側入口孔６４とも弁半
開状態で湯水が約半々に混合されて流出路６１に流れ出
る状態、図７（ｃ）は湯側入口孔６３を約２０％開き、
水側入口孔６４を約８０％開いた状態を示したものであ
り、図７（ｄ）は水側入口孔６４を全開し、湯側入口孔
６３を全閉の状態を示したものであり、湯側流入路５９
と流出路６１とは連通せず、ハウジング５８のシリンダ
部６６と弁体６２の円筒部６７とのすきまを微小にして
湯側の内部漏れが防止されている。The operation of the present embodiment in the above configuration will be described. FIG. 7A shows a state in which the hot water side inlet hole 63 is fully opened and the water side inlet hole 64 is completely closed. The water side inflow path 60 and the outflow path 61 do not communicate with each other, and the housing 5
The clearance between the cylinder portion 66 of FIG. 8 and the cylinder portion 67 of the valve body 62 is made minute to prevent internal leakage on the water side. FIG.
FIG. 7B shows a state in which the hot water is mixed approximately half and flows out to the outflow passage 61 with both the hot water side inlet hole 63 and the water side inlet hole 64 in the valve half-open state, and FIG. Open,
FIG. 7D illustrates a state in which the water-side inlet hole 64 is fully opened and the water-side inlet hole 64 is fully closed, and FIG. , Hot water side inflow channel 59
And the outflow passage 61 are not communicated with each other, and the clearance between the cylinder portion 66 of the housing 58 and the cylinder portion 67 of the valve body 62 is made small to prevent internal leakage on the hot water side.

【００５１】図６で示した略Ｘ字形断面の弾性シール部
材７６は、複数の流入路５９、６０から流出路６１に流
れるハウジング５８の内部の湯、水が、ハウジング５８
の外部に漏れ出ないよう、断面形状がＸ字形をしたゴム
のリングで、弁体６２の溝７５とハウジング５８の内面
にそれぞれ密着する２本のシール帯が形成される。すな
わち１個のシール部材７６で、実質的には二重のシール
ができ、高い外部漏れ防止効果が得られる。しかも、軸
シール部６８をハウジング５８のシリンダ部６６と摺動
する円筒部６７の直径よりも細い直径に形成したことに
より、シール長さが短く、シール部材７６のハウジング
５８との接触面積も少ないため、信頼性の高い弁外部漏
れ防止効果に加えて回転摩擦抵抗の大幅な低減効果が得
られる。さらに０リングによるシールのように円形断面
を押しつぶす容積圧縮変形と異なり、Ｘ形断面を押し挟
むような曲げ変形によるシールなので、同じシールつぶ
ししろの場合でも変形に要する力は、０リングに較べて
Ｘ字形シール部材７６の方が圧倒的に小さい。すなわ
ち、シール部材７６とハウジング５８および溝７５との
接触摺動摩擦力が小さくなり、弁体６２を回転駆動する
のに必要なトルクを大幅に低減できる。実験した結果に
よると、０リングに対しＸリングは、５分の１ないし６
分の１のトルクで弁体６２を駆動することができた。The elastic seal member 76 having a substantially X-shaped cross section shown in FIG. 6 is used for supplying hot water and water inside the housing 58 flowing from the plurality of inflow paths 59 and 60 to the outflow path 61.
Two seal strips are formed by rubber rings having an X-shaped cross section so as not to leak outside. That is, substantially double sealing can be achieved with one seal member 76, and a high effect of preventing external leakage can be obtained. Moreover, since the shaft seal portion 68 is formed to have a diameter smaller than the diameter of the cylindrical portion 67 that slides on the cylinder portion 66 of the housing 58, the seal length is short, and the contact area of the seal member 76 with the housing 58 is small. Therefore, in addition to a highly reliable valve leakage prevention effect, a significant reduction effect of rotational friction resistance can be obtained. Furthermore, unlike the volume compression deformation in which a circular cross-section is crushed like a seal using a 0-ring, the seal is formed by bending deformation such that the X-shaped cross-section is pinched. The X-shaped seal member 76 is overwhelmingly small. That is, the contact sliding frictional force between the seal member 76 and the housing 58 and the groove 75 is reduced, and the torque required to rotationally drive the valve body 62 can be greatly reduced. According to the experimental results, the X-ring is one-fifth to six-
The valve body 62 was able to be driven with a one-half torque.

【００５２】また０リングの場合は、ハウジングおよび
溝部との接触シール部にグリス等の潤滑剤を塗布してい
ても、そのグリス保持ができにくいので、弁体を長い期
間動作させなかったりすると、０リングとハウジング５
８および弁体６２が固着して作動しずらくなるなどの不
都合があった。これに対してＸ形シール部材７６の場合
は、Ｘ形断面の窪み部がグリスだまりとなってグリス等
の潤滑剤が保持される。したがって、上記のような固着
の問題も解消され、長期間、安定して弁体６２を軽く滑
らかに駆動でき、耐久信頼性も向上できる。In the case of the O-ring, even if a lubricant such as grease is applied to the contact seal portion between the housing and the groove, it is difficult to hold the grease. Therefore, if the valve is not operated for a long period of time, O-ring and housing 5
8 and the valve body 62 are stuck and it becomes difficult to operate. On the other hand, in the case of the X-shaped seal member 76, the recessed portion of the X-shaped cross section forms a grease pool, and a lubricant such as grease is held. Therefore, the above-mentioned problem of sticking is also solved, and the valve element 62 can be driven lightly and smoothly for a long period of time, and the durability reliability can be improved.

【００５３】また、軸シール部６８をハウジング５８の
シリンダ部６６と摺動する円筒部６７の直径よりも細い
直径に形成し、また、正逆転回転可能なモータ７１の出
力軸７２は、円形の円弧部分２カ所を対称的に削り取っ
た断面形状で弁体６２の同じく円形の円弧部分２カ所を
対称的に削り取った断面形状の軸穴７３に挿入され、ク
リアランス７４を有し、弁体６２が軸方向に移動自在に
モータ７１の回転を弁体６２に伝達する回転動力伝達部
８０とし、弁体６２の流路６９の出口部６５の端面と対
向して弁座７０を形成した構成なので、弁体６２の側面
の複数の入口孔６３、６４にかかる流体圧により、円筒
部６７の断面積と軸シール部６８の断面積の差と前記流
体圧１次圧の積による力から円筒部の断面積と流体２次
圧の積を差し引いた力で弁体６２を弁座７０に押しつけ
るように作用する。したがって、複数の流入路５９、６
０の圧力が高くなるほど、その流体の圧力で弁体６２が
出口部６５の端面に形成された弁座７０に押しつけられ
るように作用し、弁体６２の複数の入口孔６３、６４以
外の弁体周囲のクリアランスから出口部６５に漏れ出よ
うとしても、弁体６２の出口部６５の端面が弁座７０に
押しつけられて漏れ出るすきまが閉ざされるので、簡単
な構成でありながら、高い流体圧のときも弁内部漏れが
少なく高い流量混合比の湯水混合制御が可能になる。Further, the shaft seal portion 68 is formed to have a diameter smaller than the diameter of the cylindrical portion 67 that slides with the cylinder portion 66 of the housing 58, and the output shaft 72 of the forward / reversely rotatable motor 71 has a circular shape. The valve body 62 is inserted into a shaft hole 73 having a cross-sectional shape obtained by symmetrically removing two circular arc portions of the valve body 62 in a cross-sectional shape obtained by symmetrically removing two circular arc portions. Since the rotary power transmission unit 80 transmits the rotation of the motor 71 to the valve body 62 movably in the axial direction, and the valve seat 70 is formed facing the end surface of the outlet 65 of the flow path 69 of the valve body 62, Due to the fluid pressure applied to the plurality of inlet holes 63 and 64 on the side surface of the valve body 62, the difference between the cross-sectional area of the cylindrical portion 67 and the cross-sectional area of the shaft seal portion 68 and the force of the product of the fluid pressure primary pressure cause Subtract the product of the cross-sectional area and the fluid secondary pressure It acts to press the valve body 62 the valve seat 70 by the force. Therefore, a plurality of inflow paths 59, 6
As the pressure of the valve body 0 increases, the valve body 62 acts so as to be pressed against the valve seat 70 formed on the end face of the outlet part 65 by the pressure of the fluid, and the valve other than the plurality of inlet holes 63 and 64 of the valve body 62. Even if an attempt is made to leak from the clearance around the body to the outlet 65, the end face of the outlet 65 of the valve body 62 is pressed against the valve seat 70 to close the leaking gap. In this case, too, it is possible to control the mixing of hot and cold water with a high flow mixing ratio with little leakage inside the valve.

【００５４】以上述べたように本実施例によれば、軸シ
ール部６８をハウジング５８のシリンダ部６６と摺動す
る円筒部６７の直径よりも細い直径に形成し、弁体６２
が軸方向に移動自在にモータ７１の回転を弁体６２に伝
達する回転動力伝達部８０とし、弁体６２の流路６９の
出口部６５の端面と対向して弁座７０を形成し、複数の
入口孔６３、６４にかかる流体圧が高くなるほど、その
流体の圧力で弁体６２が出口部６５の端面に形成された
弁座７０に押しつけられるように作用し、低い流体圧か
ら高い流体圧まで広範囲におよんで弁体６２の周囲のす
きま洩れの少ない流量混合制御が可能な流体制御弁５７
を実現できる。As described above, according to the present embodiment, the diameter of the shaft seal portion 68 is made smaller than the diameter of the cylindrical portion 67 that slides on the cylinder portion 66 of the housing 58, and the valve body 62 is formed.
Is a rotary power transmission unit 80 that transmits the rotation of the motor 71 to the valve body 62 so as to be movable in the axial direction, and forms a valve seat 70 facing the end face of the outlet 65 of the flow path 69 of the valve body 62. As the fluid pressure applied to the inlet holes 63 and 64 increases, the pressure of the fluid acts so that the valve body 62 is pressed against the valve seat 70 formed on the end face of the outlet portion 65, and the fluid pressure changes from low fluid pressure to high fluid pressure. A fluid control valve 57 capable of controlling flow mixing with little clearance leakage around the valve body 62 over a wide range up to
Can be realized.

【００５５】図９は、本発明の第四の実施例を示す流体
制御弁８１の構成図であり、図１０（ａ）〜（ｄ）は図
９のＥ−Ｅ断面図である。同図において８２はハウジン
グであり、複数の流入路である湯側流入路８３と水側流
入路８４および流出路８５を有している。８６はハウジ
ング８２内に回動可能に設けらた略円筒形の弁体であ
り、その弁体８６は側面に複数の入口孔８７、８８およ
び端面に出口部８９を有し、ハウジング８２のシリンダ
部９０と摺動する円筒部９１の直径よりも細い直径の軸
シール部９２を有し内部に複数の流入路８３、８４と流
出路８５とを連通ないし遮断する流路９３が形成されて
いる。弁体８６の側面の複数の入口孔８７、８８は、ハ
ウジング８２のシリンダ部９０との摺動接触面９３に臨
んで設けられ、この複数の入口孔８７、８８を囲むよう
に凸部９４、９５が、弁体８６と一体的に形成されてい
る。かつ弁体８６を回転すると湯側入口孔８７と湯側流
入路８３とが連通ないし遮断され、水側入口孔８８と水
側流入路８４とが遮断ないし連通する位置に設けられて
いる。また弁体８６の流路９３の出口部８９の端面と対
向して弁座９６が形成され、弁体８６の出口部８９の端
面とは反対側の端部に、ステッピングモータ９７の出力
軸９８を挿入する軸穴９９が形成されている。軸穴９９
の形状は図１１のように円形の円弧部分２カ所を対称的
に削り取った形をしており、かつ軸穴９９と出力軸９８
との間には適度のクリアランス１００が設けてあり、弁
体８６はステッピングモータ９７の出力軸９８の回転に
ともなって回転されるが、弁体８６の軸方向には弁座９
６に当たる位置からモータ９７の出力軸９８の先端が軸
穴９９の底に当たる位置までは移動自在である。FIG. 9 is a structural view of a fluid control valve 81 according to a fourth embodiment of the present invention, and FIGS. 10 (a) to 10 (d) are sectional views taken along the line EE of FIG. In the figure, reference numeral 82 denotes a housing, which has a plurality of inflow paths, that is, a hot water side inflow path 83, a water side inflow path 84, and an outflow path 85. Reference numeral 86 denotes a substantially cylindrical valve body rotatably provided in the housing 82. The valve body 86 has a plurality of inlet holes 87, 88 on a side surface and an outlet 89 on an end surface. A channel 93 that has a shaft seal portion 92 having a diameter smaller than the diameter of the cylindrical portion 91 that slides with the portion 90 and that communicates or blocks the plurality of inflow channels 83 and 84 and the outflow channel 85 is formed therein. . A plurality of inlet holes 87, 88 on the side surface of the valve element 86 are provided facing a sliding contact surface 93 with the cylinder portion 90 of the housing 82, and a convex portion 94, which surrounds the plurality of inlet holes 87, 88. 95 is formed integrally with the valve body 86. In addition, when the valve element 86 is rotated, the hot water side inlet hole 87 and the hot water side inflow passage 83 are communicated or shut off, and the water side inlet hole 88 and the water side inflow passage 84 are provided at a position where the water side inflow passage 84 is interrupted or communicated. A valve seat 96 is formed facing the end face of the outlet 89 of the flow passage 93 of the valve body 86, and the output shaft 98 of the stepping motor 97 is provided at the end opposite to the end face of the outlet 89 of the valve body 86. Is formed in the shaft hole 99. Shaft hole 99
Has a shape in which two circular arc portions are symmetrically cut off as shown in FIG. 11, and a shaft hole 99 and an output shaft 98 are formed.
And a moderate clearance 100 is provided between the valve body 86 and the output shaft 98 of the stepping motor 97 to rotate the valve body 86.
6 from the position corresponding to 6 to the position where the tip of the output shaft 98 of the motor 97 contacts the bottom of the shaft hole 99.

【００５６】また弁体８６の軸シール部９２はリング状
の溝１０１が形成されており、その溝１０１にＸ字形断
面の弾性シール部材１０２が設けられている。A ring-shaped groove 101 is formed in the shaft seal portion 92 of the valve element 86, and an elastic seal member 102 having an X-shaped cross section is provided in the groove 101.

【００５７】またモータ９７は、流体制御弁８１のハウ
ジング８２にビス１０３、１０４により取り付けられて
いる。The motor 97 is attached to the housing 82 of the fluid control valve 81 by screws 103 and 104.

【００５８】また、弁体８６の軸穴９９の外側に弁体８
６の回転範囲角度を規制する回転角規制部材１０５が装
着されている。Further, the valve body 8 is provided outside the shaft hole 99 of the valve body 86.
The rotation angle regulating member 105 for regulating the rotation range angle of No. 6 is mounted.

【００５９】以上の構成において本実施例の動作につい
て説明する。図１０（ａ）は湯側入口孔８７を全開し、
水側入口孔８８を全閉にした状態を示したものであり、
水側流入路８４と流出路８５とは連通せず、入口孔８８
を囲むように形成された凸部９５によって、ハウジング
８２のシリンダ部９０と弁体８６の円筒部９１とのすき
まを微小にして水側の内部漏れが防止されている。図１
０（ｂ）は湯側入口孔８７および水側入口孔８８とも弁
半開状態で湯水が約半々に混合されて流出路８５に流れ
出る状態、図１０（ｃ）は湯側入口孔８７を約２０％開
き、水側入口孔８８を約８０％開いた状態を示したもの
であり、図１０（ｄ）は水側入口孔８８を全開し、湯側
入口孔８７を全閉の状態を示したものであり、湯側流入
路８３と流出路８５とは連通せず、入口孔８７を囲むよ
うに形成された凸部９４によって、ハウジング８２のシ
リンダ部９０と弁体８６の円筒部９１とのすきまを微小
にして湯側の内部漏れが防止されている。なおここで、
凸部９４、９５は弁体８６と一体的に高分子材料で成型
できるので加工生産性もよく、ハウジング８２とは部分
的な小さい接触面積なので、弁体８６の回動時に必要な
駆動トルクを小さく押さえることができる。The operation of this embodiment with the above configuration will be described. FIG. 10 (a) fully opens the hot water side inlet hole 87,
It shows a state in which the water-side entrance hole 88 is fully closed,
The water-side inflow channel 84 and the outflow channel 85 do not communicate with each other, and the
The clearance between the cylinder portion 90 of the housing 82 and the cylinder portion 91 of the valve element 86 is made small by the convex portion 95 formed so as to surround the inside of the housing 82, thereby preventing internal leakage on the water side. FIG.
0 (b) is a state in which the hot and cold water is mixed about half and flows out to the outflow passage 85 with both the hot water side inlet hole 87 and the water side inlet hole 88 in the valve half-opened state, and FIG. FIG. 10D shows a state where the water-side inlet hole 88 is fully opened and the hot-water-side inlet hole 87 is fully closed. The hot-water-side inflow path 83 and the outflow path 85 do not communicate with each other, and the cylinder 94 of the housing 82 and the cylinder 91 of the valve element 86 are connected to each other by a convex portion 94 formed so as to surround the inlet hole 87. The internal clearance on the hot water side is prevented by minimizing the clearance. Here,
Since the convex portions 94 and 95 can be molded from a polymer material integrally with the valve body 86, the processing productivity is good, and since the contact area with the housing 82 is small, the driving torque required for rotating the valve body 86 is reduced. Can be kept small.

【００６０】図９で示した略Ｘ字形断面の弾性シール部
材１０２は、複数の流入路８３、８４から流出路８５に
流れるハウジング８２の内部の湯、水が、ハウジング８
２の外部に漏れ出ないよう、断面形状がＸ字形をしたゴ
ムのリングで、弁体８６の溝１０１とハウジング８２の
内面にそれぞれ密着する２本のシール帯が形成される。
すなわち１個のシール部材１０２で、実質的には二重の
シールができ、高い外部漏れ防止効果が得られる。しか
も、軸シール部９２をハウジング８２のシリンダ部９０
と摺動する円筒部９１の直径よりも細い直径に形成した
ことにより、シール長さが短く、シール部材１０２のハ
ウジング８２との接触面積も少ないため、信頼性の高い
弁外部漏れ防止効果に加えて回転摩擦抵抗の大幅な低減
効果が得られる。さらに０リングによるシールのように
円形断面を押しつぶす容積圧縮変形と異なり、Ｘ形断面
を押し挟むような曲げ変形によるシールなので、同じシ
ールつぶししろの場合でも変形に要する力は、０リング
に較べてＸ字形シール部材１０２の方が圧倒的に小さ
い。すなわち、シール部材１０２とハウジング８２およ
び溝１０１との接触摺動摩擦力が小さくなり、弁体８６
を回転駆動するのに必要なトルクを大幅に低減できる。
実験した結果によると、０リングに対しＸリングは、５
分の１ないし６分の１のトルクで弁体８６を駆動するこ
とができた。The elastic seal member 102 having a substantially X-shaped cross section shown in FIG. 9 is used to supply hot water and water inside the housing 82 flowing from the plurality of inflow paths 83 and 84 to the outflow path 85.
Two seal bands are formed by rubber rings having an X-shaped cross-section so as not to leak out to the outside of the housing 2 from the groove 101 of the valve element 86 and the inner surface of the housing 82.
That is, one seal member 102 can substantially double seal, and a high effect of preventing external leakage can be obtained. Moreover, the shaft seal portion 92 is connected to the cylinder portion 90 of the housing 82.
Formed with a diameter smaller than the diameter of the cylindrical portion 91 that slides, the seal length is short, and the contact area of the seal member 102 with the housing 82 is small. As a result, a significant effect of reducing the rotational friction resistance can be obtained. Furthermore, unlike the volume compression deformation in which a circular cross-section is crushed like a seal using a 0-ring, the seal is formed by bending deformation such that the X-shaped cross-section is pinched. The X-shaped seal member 102 is overwhelmingly small. That is, the contact sliding frictional force between the seal member 102 and the housing 82 and the groove 101 is reduced, and the valve body 86
The torque required to rotationally drive the motor can be greatly reduced.
According to the experimental results, the X ring is 5
The valve element 86 could be driven with a torque of 1/6 to 1/6.

【００６１】また０リングの場合は、ハウジングおよび
溝部との接触シール部にグリス等の潤滑剤を塗布してい
ても、そのグリス保持ができにくいので、弁体を長い期
間動作させなかったりすると、０リングとハウジング８
２および弁体８６が固着して作動しずらくなるなどの不
都合があった。これに対してＸ形シール部材１０２の場
合は、Ｘ形断面の窪み部がグリスだまりとなってグリス
等の潤滑剤が保持される。したがって、上記のような固
着の問題も解消され、長期間、安定して弁体８６を軽く
滑らかに駆動でき、耐久信頼性も向上できる。In the case of the O-ring, even if a lubricant such as grease is applied to the contact seal portion between the housing and the groove, it is difficult to hold the grease. Therefore, if the valve is not operated for a long period of time, O-ring and housing 8
2 and the valve body 86 are stuck, making it difficult to operate. On the other hand, in the case of the X-shaped seal member 102, the recessed portion of the X-shaped cross section becomes a grease pool, and a lubricant such as grease is held. Therefore, the above-mentioned problem of sticking can be solved, and the valve element 86 can be driven lightly and smoothly for a long period of time, and the durability reliability can be improved.

【００６２】また、軸シール部９２をハウジング８２の
シリンダ部９０と摺動する円筒部９１の直径よりも細い
直径に形成し、また、正逆転回転可能なモータ９７の出
力軸９８は、円形の円弧部分２カ所を対称的に削り取っ
た断面形状で弁体８６の同じく円形の円弧部分２カ所を
対称的に削り取った断面形状の軸穴９９に挿入され、ク
リアランス１００を有し、弁体８６が軸方向に移動自在
にモータ９７の回転を弁体８６に伝達する回転動力伝達
部１０６とし、弁体８６の流路９３の出口部８９の端面
と対向して弁座９６を形成した構成なので、弁体８６の
側面の複数の入口孔８７、８８にかかる流体圧により、
円筒部９１の断面積と軸シール部９２の断面積の差と前
記流体圧１次圧の積による力から円筒部の断面積と流体
２次圧の積を差し引いた力で弁体８６を弁座９６に押し
つけるように作用する。したがって、複数の流入路８
３、８４の圧力が高くなるほど、その流体の圧力で弁体
８６が出口部８９の端面に形成された弁座９６に押しつ
けられるように作用し、弁体８６の複数の入口孔８７、
８８以外の弁体周囲のクリアランスから出口部８９に漏
れ出ようとしても、弁体８６の出口部８９の端面が弁座
９６に押しつけられて漏れ出るすきまが閉ざされるの
で、簡単な構成でありながら、高い流体圧のときも弁内
部漏れが少なく高い流量混合比の湯水混合制御が可能に
なる。The shaft seal portion 92 is formed to have a diameter smaller than the diameter of the cylindrical portion 91 that slides on the cylinder portion 90 of the housing 82. The output shaft 98 of the motor 97, which can rotate in the normal and reverse directions, has a circular shape. The valve body 86 is inserted into a shaft hole 99 having a cross-sectional shape obtained by symmetrically removing two circular arc portions of the valve body 86 in a cross-sectional shape obtained by symmetrically removing two circular arc portions. Since the rotation power transmission unit 106 transmits the rotation of the motor 97 to the valve body 86 so as to be movable in the axial direction, and the valve seat 96 is formed facing the end face of the outlet 89 of the flow passage 93 of the valve body 86, By the fluid pressure applied to the plurality of inlet holes 87, 88 on the side surface of the valve element 86,
The valve element 86 is valved with a force obtained by subtracting the product of the cross-sectional area of the cylindrical portion and the product of the secondary fluid pressure from the difference between the cross-sectional area of the cylindrical portion 91 and the cross-sectional area of the shaft seal portion 92 and the product of the primary product of the fluid pressure. It acts to press against the seat 96. Therefore, a plurality of inflow paths 8
As the pressure of 3, 84 increases, the valve body 86 acts to be pressed against the valve seat 96 formed on the end face of the outlet part 89 by the pressure of the fluid, and the plurality of inlet holes 87,
Even if an attempt is made to leak from the clearance around the valve element other than 88 to the outlet section 89, the end face of the outlet section 89 of the valve element 86 is pressed against the valve seat 96 to close the leaking gap. In addition, even when the fluid pressure is high, there is little leakage inside the valve, and it is possible to perform hot water mixing control with a high flow mixing ratio.

【００６３】また上記の構成作用に加えて弁体８６の複
数の入口孔８７、８８を囲む凸部９４、９５を設けたこ
とにより、凸部９４、９５がハウジング８２との摺動接
触面９３のすきまを小さくし、弁体８６の外周のすきま
からの漏れがさらに減少し、弁内部漏れ量を極小にで
き、この凸部９４、９５の内部漏れ防止作用と前記弁座
９６による弁内部漏れ防止作用との２重の内部漏れ防止
構成により、複数の流入路８３、８４の流体圧が低圧か
ら高圧まで広い範囲にわたって、優れた内部漏れ防止効
果が得られる。Further, in addition to the above-described configuration and operation, the projections 94 and 95 surrounding the plurality of inlet holes 87 and 88 of the valve element 86 are provided, so that the projections 94 and 95 are in sliding contact with the housing 82. , The leakage from the clearance on the outer periphery of the valve body 86 is further reduced, and the amount of internal leakage of the valve can be minimized. With the double internal leakage prevention structure having the prevention function, an excellent internal leakage prevention effect can be obtained over a wide range of fluid pressures of the plurality of inflow paths 83 and 84 from low pressure to high pressure.

【００６４】また、弁体８６に設けられた凸部９４、９
５により、摺動接触面積が減少し、弁体８６を回転させ
るのに必要な駆動トルクをさらに小さくでき、極めて軽
く滑らかに回転操作することができる。The projections 94, 9 provided on the valve body 86
5, the sliding contact area is reduced, the driving torque required to rotate the valve element 86 can be further reduced, and the rotation operation can be performed extremely lightly and smoothly.

【００６５】以上述べたように本実施例によれば、軸シ
ール部９２をハウジング８２のシリンダ部９０と摺動す
る円筒部９１の直径よりも細い直径に形成し、弁体８６
が軸方向に移動自在にモータ９７の回転を弁体８６に伝
達する回転動力伝達部１０６とし、弁体８６の流路９３
の出口部８９の端面と対向して弁座９６を形成し、さら
に弁体８６のハウジング８２との摺動接触面９３で入口
孔８７、８８を囲むように凸部９４、９５形成した構成
なので、凸部９４、９５がハウジング８２との摺動接触
面９３のすきまを小さくするので、弁体８６外周のすき
まからの洩れが著しく減少できるとともに、摺動接触面
積が減少し、弁体８６を回転させるのに必要なトルクを
小さくできることに加え、複数の入口孔８７、８８にか
かる流体圧が高くなるほど、その流体の圧力で弁体８６
が出口部８９の端面に形成された弁座９６に押しつけら
れるように作用し、低い流体圧から高い流体圧まで広範
囲におよんで弁体８６の周囲のすきま洩れの少ない流量
混合制御が可能になり、かつ必要駆動トルクが小さい流
体制御弁８１を実現できる。As described above, according to the present embodiment, the diameter of the shaft seal portion 92 is made smaller than the diameter of the cylindrical portion 91 that slides on the cylinder portion 90 of the housing 82, and the valve body 86 is formed.
Is a rotational power transmission unit 106 that transmits the rotation of the motor 97 to the valve body 86 so as to be movable in the axial direction.
The valve seat 96 is formed so as to face the end face of the outlet section 89 of the valve body 86, and the projections 94 and 95 are formed so as to surround the inlet holes 87 and 88 with the sliding contact surface 93 of the valve body 86 with the housing 82. Since the projections 94 and 95 reduce the clearance of the sliding contact surface 93 with the housing 82, the leakage from the clearance on the outer periphery of the valve body 86 can be significantly reduced, and the sliding contact area is reduced. In addition to reducing the torque required for rotation, the higher the fluid pressure applied to the plurality of inlet holes 87, 88, the higher the pressure of the fluid, the more the valve 86
Acts so as to be pressed against a valve seat 96 formed on the end face of the outlet portion 89, and it is possible to perform flow mixing control with a small leak around the valve element 86 over a wide range from low fluid pressure to high fluid pressure. In addition, the fluid control valve 81 having a small required driving torque can be realized.

【００６６】図１２は、本発明の第五の実施例を示す流
体制御弁１０７の構成図であり、図６の流体制御弁５７
と異なる点は、弁体６２の出口部６５側の端面と弁座７
０との間に、四フッ化エチレンまたはポリアセタール樹
脂等の低摩擦材で形成された輪環形状部材１０８を設け
た構成で、本発明の第三の実施例の流体制御弁５７の作
用効果と異なる点は、モータ７１により弁体６２が複数
の入口孔６３、６４にかかる流体圧によって弁座７０に
押しつけられて回転するとき、低摩擦の輪環形状部材１
０８が弁体６２と弁座７０のそれぞれに対して滑りやす
く、しかもその両方の滑り面の滑りやすい方の面が選択
的に優先してすべるため、より必要駆動トルクが小さく
できる。また弁座７０の表面および弁体６２の端面の平
面度が多少うねっている場合でも、間に挟まれた輪環形
状部材１０８がうねり分を少しでも吸収変形してシール
効果を高めるように作用するため、さらに高い流量混合
比制御が可能になる。FIG. 12 is a block diagram of a fluid control valve 107 according to a fifth embodiment of the present invention.
The difference between this is that the end face of the valve body 62 on the outlet 65 side and the valve seat 7
0, a ring-shaped member 108 made of a low-friction material such as ethylene tetrafluoride or polyacetal resin is provided, and the function and effect of the fluid control valve 57 of the third embodiment of the present invention are improved. The difference is that when the valve body 62 is pressed against the valve seat 70 by the fluid pressure applied to the plurality of inlet holes 63 and 64 and rotated by the motor 71, the low friction annular member 1 is rotated.
08 is slippery with respect to each of the valve element 62 and the valve seat 70, and the slippery one of the two slip surfaces is selectively preferentially slipped, so that the required driving torque can be further reduced. Further, even when the flatness of the surface of the valve seat 70 and the end face of the valve body 62 is slightly undulating, the annular member 108 interposed therebetween acts to absorb and deform even a small amount of the undulation to enhance the sealing effect. Therefore, higher flow rate mixing ratio control becomes possible.

【００６７】以上述べたように本実施例によれば、弁体
６２の出口部６５側の端面と弁座７０との間に、四フッ
化エチレンまたはポリアセタール樹脂等の低摩擦材で形
成された輪環形状部材１０８を設けた構成なので、より
必要駆動トルクが小さく、内部漏れシール効果が高く、
高い流量混合比制御ができる流体制御弁１０７を実現で
きる。As described above, according to this embodiment, the low friction material such as ethylene tetrafluoride or polyacetal resin is formed between the end face of the valve body 62 on the outlet 65 side and the valve seat 70. Since the configuration is provided with the ring-shaped member 108, the required driving torque is smaller, the internal leakage sealing effect is higher,
The fluid control valve 107 capable of controlling a high flow mixing ratio can be realized.

【００６８】図１３は、本発明の第六の実施例を示す流
体制御弁１０９の構成図であり、図１２の流体制御弁１
０７と異なる点は、弁体６２の出口部６５側の端面と弁
座７０との間に、輪環形状部材１０８と合わせてさらに
もう一つの四フッ化エチレンまたはポリアセタール樹脂
等の低摩擦材で形成された輪環形状部材１１０を設けた
構成で、本発明の第五の実施例の流体制御弁１０７の作
用効果と異なる点は、モータ７１により弁体６２が複数
の入口孔６３、６４にかかる流体圧によって弁座７０に
押しつけられて回転するとき、複数重ねて設けた低摩擦
の輪環形状部材１０８と１１０とが相互に滑りやすく、
弁体６２および弁座７０に対しても滑りやすく、しかも
それら三つの滑り面の内もっとも滑りやすい面が選択的
に優先してすべるため、より極めて必要駆動トルクが小
さくできる。また弁座７０の表面および弁体６２の端面
の平面度が多少うねっている場合でも、間に挟まれた輪
環形状部材１０８、１１０がうねり分を少しでも吸収変
形してシール効果を高めるように作用するため、さらに
高い流量混合比制御が可能になる。FIG. 13 is a block diagram of a fluid control valve 109 according to a sixth embodiment of the present invention.
The difference from 07 is that another low friction material such as ethylene tetrafluoride or polyacetal resin is provided between the end face of the valve body 62 on the outlet portion 65 side and the valve seat 70 together with the ring-shaped member 108. The configuration in which the formed ring-shaped member 110 is provided is different from the operation and effect of the fluid control valve 107 of the fifth embodiment of the present invention in that the valve body 62 is moved by the motor 71 into the plurality of inlet holes 63 and 64. When pressed against the valve seat 70 and rotated by such fluid pressure, the plurality of low friction ring-shaped members 108 and 110 which are provided one on top of the other are easily slipped with each other,
The valve body 62 and the valve seat 70 are also slippery, and the slippery surface of the three slip surfaces is selectively preferentially slipped, so that the required driving torque can be extremely reduced. Even when the flatness of the surface of the valve seat 70 and the end face of the valve body 62 is slightly undulating, the annular members 108 and 110 sandwiched therebetween absorb and deform even a little undulation so as to enhance the sealing effect. , It is possible to control the flow rate mixture ratio even higher.

【００６９】以上述べたように本実施例によれば、弁体
６２の出口部６５側の端面と弁座７０との間に、四フッ
化エチレンまたはポリアセタール樹脂等の低摩擦材で形
成された輪環形状部材１０８、１１０を複数重ねて設け
た構成なので、より極めて必要駆動トルクが小さく、内
部漏れシール効果が高く、高い流量混合比制御ができる
流体制御弁１０９を実現できる。As described above, according to this embodiment, the low friction material such as ethylene tetrafluoride or polyacetal resin is formed between the end face of the valve body 62 on the outlet 65 side and the valve seat 70. Since the ring-shaped members 108 and 110 are provided in a superposed manner, the fluid control valve 109 which requires a much smaller driving torque, has a high internal leakage sealing effect, and can control a high flow mixing ratio can be realized.

【００７０】[0070]

【発明の効果】以上詳述したように本発明の流体制御弁
は、ハウジングのシリンダ内に回動可能に設けられた略
円筒形の側面に入口孔および端面に出口部を有し、前記
ハウジングのシリンダ部と摺動する円筒部の直径よりも
細い直径の軸シール部を有する弁体と、前記弁体の前記
出口部の端面と対向して形成した弁座と、前記弁体を回
転駆動するモータと、前記弁体が軸方向に移動自在に前
記モータの回転を前記弁体に伝達する回転動力伝達部を
設けた構成なので、入口孔にかかる流体圧が高くなるほ
ど、その流体の圧力で弁体が出口部の端面に形成された
弁座に押しつけられるように作用し、簡単な構成であり
ながら、特に高い流体圧のときも弁内部漏れの少ない流
量制御を可能にする効果が得られる。As described in detail above, the fluid control valve of the present invention has an inlet hole on a substantially cylindrical side surface rotatably provided in a cylinder of a housing and an outlet portion on an end surface. A valve body having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion that slides with the cylinder portion, a valve seat formed to face an end surface of the outlet portion of the valve body, and rotationally driving the valve body. And a rotary power transmission unit for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction, so that as the fluid pressure applied to the inlet hole increases, the pressure of the fluid increases. The valve body acts so as to be pressed against a valve seat formed on the end face of the outlet portion, and has an effect of enabling a flow control with a small internal leak even at a particularly high fluid pressure while having a simple structure. .

【００７１】また、本発明の流体制御弁は、ハウジング
のシリンダ部と摺動する円筒部の直径よりも細い直径の
軸シール部を有する弁体と、前記弁体の前記ハウジング
との摺動接触面で入口孔を囲むように形成した凸部と、
前記弁体の前記出口部の端面と対向して形成した弁座
と、前記弁体を回転駆動するモータと、前記弁体が軸方
向に移動自在に前記モータの回転を前記弁体に伝達する
回転動力伝達部を設けたものであり、以下の効果が得ら
れる。Further, the fluid control valve of the present invention has a valve body having a shaft seal portion having a diameter smaller than the diameter of a cylindrical portion that slides on a cylinder portion of a housing, and a sliding contact between the valve body and the housing. A convex portion formed so as to surround the entrance hole with a surface,
A valve seat formed to face the end face of the outlet of the valve body, a motor for driving the valve body to rotate, and transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction. The rotary power transmission unit is provided, and the following effects can be obtained.

【００７２】（１）凸部がハウジングとの摺動接触面の
すきまを小さくするので、弁体外周のすきまからの洩れ
が著しく減少できるとともに、摺動接触面積が減少し、
弁体を回転させるのに必要なトルクを小さくできること
に加え、入口孔にかかる流体圧が高くなるほど、その流
体の圧力で弁体が出口部の端面に形成された弁座に押し
つけられるように作用し、低い流体圧から高い流体圧ま
で広範囲におよんで弁体周囲のすきま洩れの少ない流量
制御が可能になる。(1) Since the protrusion reduces the clearance of the sliding contact surface with the housing, leakage from the clearance on the outer periphery of the valve body can be significantly reduced, and the sliding contact area decreases.
In addition to reducing the torque required to rotate the valve body, the higher the fluid pressure applied to the inlet hole, the more the pressure of the fluid causes the valve body to be pressed against the valve seat formed on the end face of the outlet. However, the flow rate can be controlled in a wide range from a low fluid pressure to a high fluid pressure with little leakage around the valve body.

【００７３】（２）弁体を回転させるのに必要な駆動ト
ルクをさらに小さくでき、極めて軽く滑らかに回転操作
することができるので、小型で低トルクのモータで軽く
滑らかに回転駆動することができ、コンパクトで安価で
高耐久寿命の流体制御弁を提供することができる。(2) Since the driving torque required to rotate the valve body can be further reduced and the rotation operation can be performed extremely lightly and smoothly, the rotation can be lightly and smoothly performed by a small and low torque motor. A compact, inexpensive, and highly durable life fluid control valve can be provided.

【００７４】また、本発明の流体制御弁は、流出路と複
数の流入路を有するハウジングと、前記ハウジングのシ
リンダ内に回動可能に設けられた略円筒形の側面に複数
の入口孔および端面に出口部を有し、前記ハウジングの
シリンダ部と摺動する円筒部の直径よりも細い直径の軸
シール部を有する弁体と、前記弁体の前記出口部の端面
と対向して形成した弁座と、前記弁体を回転駆動するモ
ータと、前記弁体が軸方向に移動自在に前記モータの回
転を前記弁体に伝達する回転動力伝達部を設けたもので
あり、以下の効果が得られる。The fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and end faces formed on a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion that slides with the cylinder portion of the housing, and a valve formed to face the end face of the outlet portion of the valve body. A seat, a motor that rotationally drives the valve element, and a rotary power transmission unit that transmits the rotation of the motor to the valve element so that the valve element can move in the axial direction, and the following effects are obtained. Can be

【００７５】（１）複数の流入路の流体圧が高くなるほ
ど、その流体の圧力で弁体が出口部側の端面に形成され
た弁座に押しつけられるように作用し、弁体複数の入口
孔以外の弁体周囲のクリアランスから出口部に漏れる弁
内部漏れが、流体圧に応じてこの弁座部で抑制される作
用が高まるので、簡単な構成でありながら、特に高い流
体圧のときも弁内部漏れの少なく複数流体の高い流量混
合比制御が可能になる。(1) As the fluid pressure in the plurality of inflow passages increases, the valve body acts so as to be pressed against the valve seat formed on the end face on the outlet side by the pressure of the fluid, and the plurality of inlet holes of the valve body. The internal leakage of the valve, which leaks from the clearance around the valve body to the outlet from other than the valve body, is more effectively suppressed by this valve seat in accordance with the fluid pressure. High flow rate mixing ratio control of a plurality of fluids with little internal leakage becomes possible.

【００７６】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記ハウジングとの
摺動接触面で複数の入口孔の個々を囲むように形成した
複数の凸部と、前記弁体の前記出口部の端面と対向して
形成した弁座と、前記弁体を回転駆動するモータと、前
記弁体が軸方向に移動自在に前記モータの回転を前記弁
体に伝達する回転動力伝達部を設けたものであり、以下
の効果が得られる。The fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a plurality of inlet holes formed in a sliding contact surface between the valve body and the housing. A plurality of convex portions formed so as to surround each of the above, a valve seat formed to face the end face of the outlet portion of the valve body, a motor for rotating and driving the valve body, and the valve body is arranged in the axial direction. A rotary power transmission unit for movably transmitting the rotation of the motor to the valve body is provided, and the following effects are obtained.

【００７７】（１）凸部がハウジングとの摺動接触面の
すきまを小さくし、弁体外周のすきまからの洩れが著し
く減少できるとともに、摺動接触面積が減少し、弁体を
回転させるのに必要なトルクを小さくできることに加
え、複数の入口孔にかかる流体圧が高くなるほど、その
流体の圧力で弁体が出口孔側の端面に形成された弁座に
押しつけられるように作用し、低い流体圧から高い流体
圧まで広範囲におよんで複数流体の高い流量混合比制御
が可能になる。(1) The convex portion reduces the clearance of the sliding contact surface with the housing, so that the leakage from the clearance on the outer periphery of the valve body can be remarkably reduced, and the sliding contact area decreases to rotate the valve body. In addition to reducing the required torque, the higher the fluid pressure applied to the plurality of inlet holes, the lower the pressure acting on the valve body against the valve seat formed on the end surface on the outlet hole side, and the lower the fluid pressure, the lower the pressure. High flow rate mixing ratio control of a plurality of fluids is possible over a wide range from fluid pressure to high fluid pressure.

【００７８】（２）必要な駆動トルクを小さくできるの
で、小型で低トルクのモータで弁体を回転駆動でき、コ
ンパクトで安価で高耐久寿命の流体制御弁を実現でき
る。(2) Since the required driving torque can be reduced, the valve element can be rotationally driven by a small and low-torque motor, and a compact, inexpensive and long-lasting fluid control valve can be realized.

【００７９】（３）必要駆動トルクが小さくできること
により、駆動手段であるモータの減速ギアの減速比を低
減できるので、流量混合調節の応答性を向上できる。(3) Since the required driving torque can be reduced, the reduction ratio of the reduction gear of the motor as the driving means can be reduced, so that the responsiveness of the flow rate mixing adjustment can be improved.

【００８０】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記出口部の端面と
対向して形成した弁座と、前記弁座と前記弁体端面との
間に設けた四フッ化エチレンまたはポリアセタール樹脂
等の低摩擦材で形成された輪環形状部材と、前記弁体を
回転駆動するモータと、前記弁体が軸方向に移動自在に
前記モータの回転を前記弁体に伝達する回転動力伝達部
を設けたものであり、以下の効果が得られる。The fluid control valve according to the present invention comprises a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a valve seat formed to face an end face of the outlet portion of the valve body. A ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided between the valve seat and the valve body end face; a motor for rotating the valve body; and the valve A rotary power transmission unit for transmitting the rotation of the motor to the valve body so that the body can move in the axial direction is provided, and the following effects can be obtained.

【００８１】（１）複数の流入路の流体圧が高くなるほ
ど、その流体の圧力で弁体が出口部の端面に形成された
弁座に強く押しつけられるが、その弁座と弁体端面との
間に設けた四フッ化エチレンまたはポリアセタール樹脂
等の低摩擦材で形成された輪環形状部材が弁体と弁座の
それぞれに対して滑りやすくかつシール効果を高めるよ
うに作用し、さらに必要駆動トルクが小さく、高い流量
混合比制御が可能になる。(1) As the fluid pressure in the plurality of inflow passages becomes higher, the valve body is strongly pressed against the valve seat formed on the end face of the outlet by the pressure of the fluid. A ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided between the valve body and the valve seat acts on each of the valve body and the valve seat so as to be slippery and to enhance the sealing effect, and further, required driving The torque is small, and a high flow mixing ratio control becomes possible.

【００８２】（２）必要な駆動トルクを小さくできるの
で、小型で低トルクのモータで弁体を回転駆動でき、コ
ンパクトで安価で高耐久寿命の流体制御弁を実現でき
る。(2) Since the required driving torque can be reduced, the valve element can be rotationally driven by a small and low torque motor, and a compact, inexpensive and long-lasting fluid control valve can be realized.

【００８３】（３）必要駆動トルクが小さくできること
により、駆動手段であるモータの減速ギアの減速比を低
減できるので、流量混合調節の応答性を向上できる。(3) Since the required driving torque can be reduced, the reduction ratio of the reduction gear of the motor as the driving means can be reduced, so that the responsiveness of the flow mixing adjustment can be improved.

【００８４】また本発明の流体制御弁は、流出路と複数
の流入路を有するハウジングと、前記ハウジングのシリ
ンダ内に回動可能に設けられた略円筒形の側面に複数の
入口孔および端面に出口部を有し、前記ハウジングのシ
リンダ部と摺動する円筒部の直径よりも細い直径の軸シ
ール部を有する弁体と、前記弁体の前記出口部の端面と
対向して形成した弁座と、前記弁座と前記弁体端面との
間に複数重ねて設けた四フッ化エチレンまたはポリアセ
タール樹脂等の低摩擦材で形成された輪環形状部材と、
前記弁体を回転駆動するモータと、前記弁体が軸方向に
移動自在に前記モータの回転を前記弁体に伝達する回転
動力伝達部を設けたものであり、以下の効果が得られ
る。The fluid control valve according to the present invention also includes a housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes and an end surface formed in a substantially cylindrical side surface rotatably provided in a cylinder of the housing. A valve body having an outlet portion and having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing; and a valve seat formed to face an end face of the outlet portion of the valve body. And, a ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided in a plurality of layers between the valve seat and the valve body end face,
A motor for rotating the valve body and a rotary power transmission unit for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction are provided, and the following effects are obtained.

【００８５】（１）複数の流入路の流体圧が高くなるほ
ど、その流体の圧力で弁体が出口部の端面に形成された
弁座側に強く押しつけられるが、その弁座と弁体端面と
の間に複数枚重ねて設けた四フッ化エチレンまたはポリ
アセタール樹脂等の低摩擦材で形成された輪環形状部材
により、最も滑りやすい輪環状部材同士の部分が低摩擦
で軽く摺動し、滑りやすくかつシール効果を高める作用
ため、必要駆動トルクがさらに安定して小さくでき、小
型・低コストで、高速応答の高い流量混合比制御が可能
になる。(1) As the fluid pressure in the plurality of inflow passages becomes higher, the valve body is strongly pressed against the valve seat formed on the end face of the outlet by the pressure of the fluid. A ring-shaped member made of a low-friction material such as ethylene tetrafluoride or polyacetal resin provided by stacking multiple sheets between them allows the most slippery ring-shaped members to slide lightly with low friction and slip. Since the operation is easy and the sealing effect is enhanced, the required driving torque can be reduced more stably, so that a small-sized, low-cost, high-speed response and high flow rate mixing ratio control becomes possible.

【００８６】（２）小型・低コストで、高速応答の流量
混合比制御ができるので、例えば急激な湯水の供給圧変
動や出湯量変更などがあっても高速の混合温度調節が可
能となり、安定した出湯温度が得られる安くてコンパク
トな湯水混合装置を実現できる。(2) Since the flow rate mixing ratio can be controlled at a high speed with a small size and low cost, the mixing temperature can be adjusted at a high speed even if there is a sudden change in the supply pressure of hot or cold water or a change in the amount of hot water. An inexpensive and compact hot and cold water mixing device capable of obtaining a predetermined tapping temperature can be realized.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の第一の実施例を示す流体制御弁の断面
図FIG. 1 is a sectional view of a fluid control valve according to a first embodiment of the present invention.

【図２】（ａ）同流体制御弁の閉止状態を示すＡ−Ａ断
面図 （ｂ）同流体制御弁の半開状態を示すＡ−Ａ断面図 （ｃ）同流体制御弁の全開状態を示すＡ−Ａ断面図FIG. 2A is a cross-sectional view taken along line AA of the fluid control valve in a closed state. FIG. 2B is a cross-sectional view taken along line AA of the fluid control valve in a half-open state. FIG. AA sectional view

【図３】同流体制御弁の弁体の外観斜視図FIG. 3 is an external perspective view of a valve body of the fluid control valve.

【図４】本発明の第二の実施例を示す流体制御弁の断面
図FIG. 4 is a sectional view of a fluid control valve according to a second embodiment of the present invention.

【図５】（ａ）同流体制御弁の閉止状態を示すＢ−Ｂ断
面図 （ｂ）同流体制御弁の半開状態を示すＢ−Ｂ断面図 （ｃ）同流体制御弁の全開状態を示すＢ−Ｂ断面図5 (a) is a BB cross-sectional view showing a closed state of the fluid control valve, (b) a BB cross-sectional view showing a half-open state of the fluid control valve, and (c) shows a fully open state of the fluid control valve. BB sectional view

【図６】本発明の第三の実施例を示す流体制御弁の断面
図FIG. 6 is a sectional view of a fluid control valve according to a third embodiment of the present invention.

【図７】（ａ）同流体制御弁の水側入口孔全閉状態を示
すＣ−Ｃ断面図 （ｂ）同流体制御弁の湯側入口孔と水側入口孔が半開状
態を示すＣ−Ｃ断面図 （ｃ）同流体制御弁の湯側入口孔２０％水側入口孔８０
％開いた状態を示すＣ−Ｃ断面図 （ｄ）同流体制御弁の湯側入口孔全開状態を示すＣ−Ｃ
断面図FIG. 7A is a cross-sectional view taken along the line CC of the fluid control valve, showing a water-side inlet hole fully closed. FIG. C sectional view (c) Hot water side inlet hole 20% water side inlet hole 80 of the fluid control valve
(D) C-C showing the fluid control valve in the fully open state on the hot water side inlet hole.
Sectional view

【図８】同流体制御弁のＤ−Ｄ断面図FIG. 8 is a sectional view taken along the line DD of the fluid control valve.

【図９】本発明の第四の実施例を示す流体制御弁の断面
図FIG. 9 is a sectional view of a fluid control valve according to a fourth embodiment of the present invention.

【図１０】（ａ）同流体制御弁の水側入口孔全閉状態を
示すＥ−Ｅ断面図 （ｂ）同流体制御弁の湯側入口孔と水側入口孔が半開状
態を示すＥ−Ｅ断面図 （ｃ）同流体制御弁の湯側入口孔２０％水側入口孔８０
％開いた状態を示すＥ−Ｅ断面図 （ｄ）同流体制御弁の湯側入口孔全開状態を示すＥ−Ｅ
断面図FIG. 10 (a) is a cross-sectional view taken along the line EE of the fluid control valve, showing a fully closed state of the water-side inlet hole. E sectional view (c) Hot water side inlet hole 20% water side inlet hole 80 of the fluid control valve
(D) EE showing the hot water side inlet hole fully open state of the fluid control valve.
Sectional view

【図１１】同流体制御弁のＦ−Ｆ断面図FIG. 11 is a sectional view taken along line FF of the fluid control valve.

【図１２】本発明の第五の実施例を示す流体制御弁の断
面図FIG. 12 is a sectional view of a fluid control valve according to a fifth embodiment of the present invention.

【図１３】本発明の第六の実施例を示す流体制御弁の断
面図FIG. 13 is a sectional view of a fluid control valve according to a sixth embodiment of the present invention.

【図１４】従来の流体制御弁であるの混合弁の断面図FIG. 14 is a sectional view of a mixing valve which is a conventional fluid control valve.

【図１５】同流体制御弁の弁体の断面図FIG. 15 is a sectional view of a valve body of the fluid control valve.

【図１６】同流体制御弁を装備した給湯装置の構成図FIG. 16 is a configuration diagram of a water heater provided with the fluid control valve.

【符号の説明】[Explanation of symbols]

１１ 流体制御弁 １２ ハウジング １３ 流入路 １４ 流出路 １５ 弁体 １６ 入口孔 １７ 出口部 １８ シリンダ部 １９ 円筒部 ２０ 軸シール部 ２２ 弁座 ２３ モータ ３２ 回転動力伝達部 ３３ 流体制御弁 ３４ ハウジング ３５ 流入路 ３６ 流出路 ３７ 弁体 ３８ 入口孔 ３９ 出口部 ４０ シリンダ部 ４１ 円筒部 ４２ 軸シール部 ４４ 摺動接触面 ４５ 凸部 ４６ 弁座 ４７ モータ ５６ 回転動力伝達部 ５７ 流体制御弁 ５８ ハウジング ５９ 流入路（湯側） ６０ 流入路（水側） ６１ 流出路 ６２ 弁体 ６３ 入口孔（湯側） ６４ 入口孔（水側） ６５ 出口部 ６６ シリンダ部 ６７ 円筒部 ６８ 軸シール部 ７０ 弁座 ７１ モータ ８０ 回転動力伝達部 ８１ 流体制御弁 ８２ ハウジング ８３ 流入路（湯側） ８４ 流入路（水側） ８５ 流出路 ８６ 弁体 ８７ 入口孔（湯側） ８８ 入口孔（水側） ８９ 出口部 ９０ シリンダ部 ９１ 円筒部 ９２ 軸シール部 ９３ 摺動接触面 ９４ 凸部 ９５ 凸部 ９６ 弁座 ９７ モータ １０６ 回転動力伝達部 １０７ 流体制御弁 １０８ 輪環形状部材 １０９ 流体制御弁 １１０ 輪環形状部材 DESCRIPTION OF SYMBOLS 11 Fluid control valve 12 Housing 13 Inflow path 14 Outflow path 15 Valve element 16 Inlet hole 17 Outlet part 18 Cylinder part 19 Cylindrical part 20 Shaft seal part 22 Valve seat 23 Motor 32 Rotary power transmission part 33 Fluid control valve 34 Housing 35 Inflow path 36 Outflow path 37 Valve element 38 Inlet hole 39 Exit part 40 Cylinder part 41 Cylindrical part 42 Shaft seal part 44 Sliding contact surface 45 Convex part 46 Valve seat 47 Motor 56 Rotational power transmission part 57 Fluid control valve 58 Housing 59 Inflow path ( (Hot water side) 60 inflow path (water side) 61 outflow path 62 valve body 63 inlet hole (hot water side) 64 inlet hole (water side) 65 outlet part 66 cylinder part 67 cylindrical part 68 shaft seal part 70 valve seat 71 motor 80 rotation Power transmission unit 81 Fluid control valve 82 Housing 83 Inflow path (hot water side) 84 Inflow path (water side) 85 Outflow path 86 Valve body 87 Inlet hole (hot water side) 88 Inlet hole (water side) 89 Outlet part 90 Cylinder part 91 Cylindrical part 92 Shaft seal part 93 Sliding contact surface 94 Convex part 95 Convex part 96 Valve seat 97 Motor 106 Rotational power transmission part 107 fluid control valve 108 annular member 109 fluid control valve 110 annular member

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16K 5/00 - 5/04 F16K 11/00 - 11/24 F16K 31/00 - 31/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) F16K 5/00-5/04 F16K 11/00-11/24 F16K 31/00-31/04

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】流入路と流出路を有するハウジングと、前
記ハウジングのシリンダ内に回動可能に設けられた略円
筒形の側面に入口孔および端面に出口部を有し、前記ハ
ウジングのシリンダ部と摺動する円筒部の直径よりも細
い直径の軸シール部を有する弁体と、前記弁体の前記出
口部の端面と対向して形成した弁座と、前記弁体を回転
駆動するモータと、前記弁体が軸方向に移動自在に前記
モータの回転を前記弁体に伝達する回転動力伝達部を設
けた流体制御弁。1. A housing having an inflow passage and an outflow passage, an inlet hole on an approximately cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface, and a cylinder portion of the housing. A valve body having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion that slides, a valve seat formed to face an end surface of the outlet portion of the valve body, and a motor that rotationally drives the valve body. A fluid control valve provided with a rotary power transmission unit that transmits the rotation of the motor to the valve body so that the valve body can move in the axial direction. 【請求項２】流入路と流出路を有するハウジングと、前
記ハウジングのシリンダ内に回動可能に設けられた略円
筒形の側面に入口孔および端面に出口部を有し、前記ハ
ウジングのシリンダ部と摺動する円筒部の直径よりも細
い直径の軸シール部を有する弁体と、前記弁体の前記ハ
ウジングとの摺動接触面で入口孔を囲むように形成した
凸部と、前記弁体の前記出口部の端面と対向して形成し
た弁座と、前記弁体を回転駆動するモータと、前記弁体
が軸方向に移動自在に前記モータの回転を前記弁体に伝
達する回転動力伝達部を設けた流体制御弁。A housing having an inflow passage and an outflow passage, an inlet hole on a substantially cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface; A valve body having a shaft seal portion having a diameter smaller than the diameter of a cylindrical portion that slides, a projection formed so as to surround an inlet hole with a sliding contact surface of the valve body with the housing, and the valve body. A valve seat formed to face the end face of the outlet portion, a motor for driving the valve body to rotate, and a rotational power transmission for transmitting the rotation of the motor to the valve body so that the valve body can move in the axial direction. Fluid control valve provided with a part. 【請求項３】流出路と複数の流入路を有するハウジング
と、前記ハウジングのシリンダ内に回動可能に設けられ
た略円筒形の側面に複数の入口孔および端面に出口部を
有し、前記ハウジングのシリンダ部と摺動する円筒部の
直径よりも細い直径の軸シール部を有する弁体と、前記
弁体の前記出口部の端面と対向して形成した弁座と、前
記弁体を回転駆動するモータと、前記弁体が軸方向に移
動自在に前記モータの回転を前記弁体に伝達する回転動
力伝達部を設けた流体制御弁。3. A housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes on a substantially cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface; A valve body having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion that slides with the cylinder portion of the housing; a valve seat formed to face an end surface of the outlet portion of the valve body; and rotating the valve body. A fluid control valve, comprising: a motor to be driven; and a rotational power transmission unit that transmits the rotation of the motor to the valve so that the valve is movable in the axial direction. 【請求項４】流出路と複数の流入路を有するハウジング
と、前記ハウジングのシリンダ内に回動可能に設けられ
た略円筒形の側面に複数の入口孔および端面に出口部を
有し、前記ハウジングのシリンダ部と摺動する円筒部の
直径よりも細い直径の軸シール部を有する弁体と、前記
弁体の前記ハウジングとの摺動接触面で複数の入口孔の
個々を囲むように形成した複数の凸部と、前記弁体の前
記出口部の端面と対向して形成した弁座と、前記弁体を
回転駆動するモータと、前記弁体が軸方向に移動自在に
前記モータの回転を前記弁体に伝達する回転動力伝達部
を設けた流体制御弁。4. A housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes on a substantially cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface, A valve body having a shaft seal portion having a diameter smaller than the diameter of the cylindrical portion sliding with the cylinder portion of the housing, and formed so as to surround each of the plurality of inlet holes with a sliding contact surface of the valve body with the housing. A plurality of convex portions, a valve seat formed facing the end face of the outlet portion of the valve element, a motor for driving the valve element to rotate, and rotation of the motor so that the valve element can move in the axial direction. A fluid control valve provided with a rotary power transmission unit for transmitting the pressure to the valve body. 【請求項５】流出路と複数の流入路を有するハウジング
と、前記ハウジングのシリンダ内に回動可能に設けられ
た略円筒形の側面に複数の入口孔および端面に出口部を
有し、前記ハウジングのシリンダ部と摺動する円筒部の
直径よりも細い直径の軸シール部を有する弁体と、前記
弁体の前記出口部の端面と対向して形成した弁座と、前
記弁座と前記弁体端面との間に設けた四フッ化エチレン
またはポリアセタール樹脂等の低摩擦材で形成された輪
環形状部材と、前記弁体を回転駆動するモータと、前記
弁体が軸方向に移動自在に前記モータの回転を前記弁体
に伝達する回転動力伝達部を設けた流体制御弁。5. A housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes on a substantially cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface; A valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with a cylinder portion of a housing; a valve seat formed to face an end surface of the outlet portion of the valve body; A ring-shaped member formed of a low-friction material such as tetrafluoroethylene or polyacetal resin provided between the valve body end face, a motor for driving the valve body to rotate, and the valve body movable in the axial direction A fluid control valve further provided with a rotation power transmission unit for transmitting rotation of the motor to the valve body. 【請求項６】流出路と複数の流入路を有するハウジング
と、前記ハウジングのシリンダ内に回動可能に設けられ
た略円筒形の側面に複数の入口孔および端面に出口部を
有し、前記ハウジングのシリンダ部と摺動する円筒部の
直径よりも細い直径の軸シール部を有する弁体と、前記
弁体の前記出口部の端面と対向して形成した弁座と、前
記弁座と前記弁体端面との間に複数重ねて設けた四フッ
化エチレンまたはポリアセタール樹脂等の低摩擦材で形
成された輪環形状部材と、前記弁体を回転駆動するモー
タと、前記弁体が軸方向に移動自在に前記モータの回転
を前記弁体に伝達する回転動力伝達部を設けた流体制御
弁。6. A housing having an outflow passage and a plurality of inflow passages, a plurality of inlet holes on an approximately cylindrical side surface rotatably provided in a cylinder of the housing, and an outlet portion on an end surface, A valve body having a shaft seal portion having a diameter smaller than a diameter of a cylindrical portion that slides with a cylinder portion of a housing; a valve seat formed to face an end surface of the outlet portion of the valve body; A ring-shaped member formed of a low friction material such as ethylene tetrafluoride or polyacetal resin provided in a plurality of layers between the valve body end face, a motor for rotating the valve body, and A fluid control valve provided with a rotational power transmission unit for movably transmitting the rotation of the motor to the valve body.
JP23099394A 1994-09-27 1994-09-27 Fluid control valve Expired - Lifetime JP2950162B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23099394A JP2950162B2 (en) 1994-09-27 1994-09-27 Fluid control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23099394A JP2950162B2 (en) 1994-09-27 1994-09-27 Fluid control valve

Publications (2)

Publication Number Publication Date
JPH0893933A JPH0893933A (en) 1996-04-12
JP2950162B2 true JP2950162B2 (en) 1999-09-20

Family

ID=16916557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23099394A Expired - Lifetime JP2950162B2 (en) 1994-09-27 1994-09-27 Fluid control valve

Country Status (1)

Country Link
JP (1) JP2950162B2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3791046B2 (en) * 1996-05-07 2006-06-28 松下電器産業株式会社 Seal structure and hot water mixing apparatus using the same
JP2002323154A (en) * 2001-04-25 2002-11-08 Inax Corp Cylinder valve with strainer
JP5523083B2 (en) * 2009-12-21 2014-06-18 大電株式会社 Mixing valve device
JP5740558B2 (en) * 2012-01-12 2015-06-24 パナソニックＩｐマネジメント株式会社 Valve device
JP5684191B2 (en) * 2012-04-23 2015-03-11 株式会社タカギ Cylinder valve and faucet device
KR101294831B1 (en) * 2013-06-12 2013-08-16 안영남 Multi-function shower
CN103912694B (en) * 2014-04-02 2016-01-20 西安交通大学 A kind of pneumatic distribution rotary valve of adjustable four path of driven by servomotor
CN107345580B (en) * 2017-08-21 2023-08-11 武汉汉德阀门股份有限公司 Multi-valve seat valve
JP6577066B2 (en) * 2018-01-16 2019-09-18 株式会社不二工機 Flow path switching valve
CN109940451A (en) * 2019-04-26 2019-06-28 上海历焱自动化设备有限公司 A kind of refrigerant control
JP7272132B2 (en) * 2019-06-21 2023-05-12 セイコーエプソン株式会社 Flow control device, three-dimensional modeling device and injection molding device
EP3855051A1 (en) * 2020-01-21 2021-07-28 Aurotec GmbH Valve
CN113883303A (en) * 2021-09-14 2022-01-04 山东杰控电气技术有限公司 Novel conical surface seal structure of tee bend flow divider

Also Published As

Publication number Publication date
JPH0893933A (en) 1996-04-12

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