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JP2008144768A - Butterfly type control valve - Google Patents

Butterfly type control valve Download PDF

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Publication number
JP2008144768A
JP2008144768A JP2008033034A JP2008033034A JP2008144768A JP 2008144768 A JP2008144768 A JP 2008144768A JP 2008033034 A JP2008033034 A JP 2008033034A JP 2008033034 A JP2008033034 A JP 2008033034A JP 2008144768 A JP2008144768 A JP 2008144768A
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JP
Japan
Prior art keywords
valve
control valve
long side
type control
outer frame
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.)
Pending
Application number
JP2008033034A
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Japanese (ja)
Inventor
Satoshi Hattori
聡 服部
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Aisan Industry Co Ltd
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Aisan Industry Co Ltd
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Publication date
Application filed by Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP2008033034A priority Critical patent/JP2008144768A/en
Publication of JP2008144768A publication Critical patent/JP2008144768A/en
Pending legal-status Critical Current

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  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lift Valve (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a butterfly type control valve having improved controllability of an amount of passing air by preventing the inward warping of a synthetic resin body when molded. <P>SOLUTION: A long side 2a and an outer frame 2b of a body 2 are formed into a round shape protruding to the outside instead of a linear shape. In a cooling process after injection molding, the round shape has sufficiently high rigidity to make inward warping smaller, if inward warping is caused on the outer frame 2b by contraction, thus preventing the long side 2a of the body 2 from contacting a valve 5. Consequently, the smooth operation of the valve 5 is secured and more accurate flow control is allowed by the control valve. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は蝶弁式制御弁に関し、詳しくは、合成樹脂製ボデーの成形時の内反りを防止して通過空気量の制御精度を向上させることができる蝶弁式制御弁に関するものである。   The present invention relates to a butterfly valve type control valve, and more particularly to a butterfly valve type control valve capable of improving the control accuracy of the passing air amount by preventing inner warp during molding of a synthetic resin body.

円形ではなく長尺辺を有する蝶弁式の制御弁については、特許文献１で公知である。前記特許文献１によれば、この発明はフラップの交差および収縮具合を補償するための手段を含むフラップ構造に係るものである。これらの手段は、第１にインジェクション成形されたフラップが冷やされた後、インジェクション成形により結合されたフラップ端の提供である。それ故フラップとフラップ枠の間の隙間を減少させる。この隙間はフラップの収縮により形成される。さらに、フレームへのシャフトの搭載は少なくとも部分的な円錐形状により実現される。それによりフラップシャフトの収縮はシャフトが円滑に動くよう搭載するために特には軸方向に利用できる。結果として、フラップの搭載部分にシール部材を使用することはもはや必要としない。さらに、フラップは最悪の場合フラップの破壊を招く搭載部の振動から防御される、としている。   A butterfly valve type control valve having a long side instead of a circular shape is known from Patent Document 1. According to Patent Document 1, the present invention relates to a flap structure including means for compensating for flap intersection and contraction. These means are the provision of the flap ends joined by injection molding after the injection molded flap is first cooled. Therefore, the gap between the flap and the flap frame is reduced. This gap is formed by the contraction of the flap. Furthermore, the mounting of the shaft on the frame is realized by at least a partial conical shape. Thereby, the contraction of the flap shaft can be used in particular in the axial direction for mounting the shaft so that it moves smoothly. As a result, it is no longer necessary to use a sealing member on the flap mounting. Furthermore, the flaps are supposed to be protected from the vibration of the mounting part that causes the destruction of the flaps in the worst case.

ドイツ国出願公開公報ＤＥ１９８ ４８ ４４０ Ａ１号German application publication DE 198 48 440 A1

しかしながら、上述のような長尺辺を有する蝶弁式制御弁においては、図２に示すように、合成樹脂製のボデー２２の長尺辺２２ａが射出成形後の冷却過程において、外枠２２ｂ部分の収縮が大きいため内側に向かって凸状に反る、いわゆる、内反りが生じてバルブ５と接触しバルブ５の作動を妨げ通過空気量の制御性が損なわれるおそれがある。なお、図２においては、ボデーとバルブの隙間は解り易くするため誇張して描かれている。   However, in the butterfly valve type control valve having the long side as described above, as shown in FIG. 2, the long side 22a of the synthetic resin body 22 is in the outer frame 22b portion in the cooling process after the injection molding. Since the shrinkage of the valve 5 is large, a so-called inward warping occurs inwardly, causing contact with the valve 5 to impede the operation of the valve 5 and may impair the controllability of the passing air amount. In FIG. 2, the gap between the body and the valve is exaggerated for easy understanding.

そこで本発明は、合成樹脂製ボデーの成形時の内反りを防止して通過空気量の制御性を向上させることができる蝶弁式制御弁を提供することを課題とするものである。   Accordingly, an object of the present invention is to provide a butterfly valve type control valve that can improve the controllability of the passing air amount by preventing the internal warp during molding of the synthetic resin body.

前記課題の解決を目的としてなされた請求項１の発明は、円形ではなく長尺辺を有するバルブにより構成される蝶弁式制御弁において、前記蝶弁式制御弁を構成するボデーの長尺辺および外枠の形状を直線ではなく外側に凸状となるようＲを付けたことを特徴とする。また、請求項２の発明は、前記Ｒの寸法と前記長尺辺長さＬとの関係をＲ≒３０００００／Ｌとしたことを特徴とする。   The invention of claim 1 made for the purpose of solving the above problem is a butterfly valve type control valve constituted by a valve having a long side instead of a circle, and the long side of the body constituting the butterfly valve type control valve. In addition, the outer frame is formed with an R so that the outer frame is convex instead of a straight line. The invention of claim 2 is characterized in that the relationship between the dimension of R and the long side length L is R≈300000 / L.

上述のように、請求項１の発明においては、蝶弁式制御弁を構成するボデーの長尺辺および外枠の形状を直線ではなく外側に凸状となるようＲを付けたので、射出成形後の冷却過程において内反りしようとするが、Ｒ形状による剛性が強いため内反りを小さくすることができ長尺辺がバルブに接触することがない。   As described above, in the invention of claim 1, since the long sides of the body constituting the butterfly valve type control valve and the shape of the outer frame are provided with R so as to be convex outward rather than straight, injection molding is performed. In the subsequent cooling process, inward warping is attempted, but since the rigidity due to the R shape is strong, the inward warping can be reduced and the long side does not contact the valve.

本発明は上述のように構成されているので以下の効果を奏する。すなわち、ボデーの長尺辺および外枠の形状を直線ではなく外側に凸状となるようＲを付けたので、射出成形後の冷却過程において内反りしようとするが、Ｒ形状による剛性が強いため内反りを小さくすることができ長尺辺がバルブに接触することがない。そのため、バルブの円滑な作動が確保され、制御弁の流量制御精度を向上させることができる。   Since this invention is comprised as mentioned above, there exist the following effects. That is, since the long side of the body and the shape of the outer frame are rounded so as to be convex outward rather than straight, they try to warp in the cooling process after injection molding, but the rigidity due to the R shape is strong The inner warp can be reduced, and the long side does not contact the valve. Therefore, the smooth operation of the valve is ensured, and the flow control accuracy of the control valve can be improved.

本発明の望ましい実施形態について図面を参照して説明する。図１は本発明の一実施形態に係る蝶弁式制御弁のボデーの横断面図である。図１において、蝶弁式制御弁１を構成するボデー２の中央に設けられた吸気通路３を横切ってシャフト４が回動可能に軸支されている。シャフト４にはバルブ５がネジ６により固定されている。シャフト４の一端は周知のアクチュエータに連結され、アクチュエータの駆動によりバルブ５とともに回動し吸気通路３を通過する空気量を制御するよう構成されている。吸気通路３は円形でなく長尺辺２ａを有する多角形に形成されている。長尺辺２ａおよびボデー２の外枠２ｂの形状は外側に凸状となるようＲが付けられている。Ｒ（約２０００ｍｍ）の寸法と長尺辺の長さＬ（約１５０ｍｍ）との関係はＲ≒３０００００／Ｌとなっている。なお、Ｒ寸法はボデーが成形後冷却された状態においてバルブ形状に対して最適な隙間が確保されるよう実験的に最適値が求められている。   Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a body of a butterfly valve control valve according to an embodiment of the present invention. In FIG. 1, a shaft 4 is rotatably supported across an intake passage 3 provided at the center of a body 2 constituting the butterfly valve control valve 1. A valve 5 is fixed to the shaft 4 with a screw 6. One end of the shaft 4 is connected to a known actuator, and is configured to control the amount of air passing through the intake passage 3 by rotating with the valve 5 by driving the actuator. The intake passage 3 is not circular but is formed in a polygon having a long side 2a. The long side 2a and the shape of the outer frame 2b of the body 2 are provided with an R so as to be convex outward. The relationship between the dimension of R (about 2000 mm) and the length L of the long side (about 150 mm) is R≈300000 / L. The R dimension has been experimentally determined to be an optimum value so as to ensure an optimal gap with respect to the valve shape when the body is cooled after being molded.

本発明の一実施形態に係る蝶弁式制御弁のボデーの横断面図である。It is a transverse cross section of the body of a butterfly valve type control valve concerning one embodiment of the present invention. 従来の蝶弁式制御弁の横断面図である。It is a cross-sectional view of a conventional butterfly valve type control valve.

符号の説明Explanation of symbols

１ 制御弁
２ ボデー
２ａ 長尺辺
２ｂ 外枠
５ バルブ
1 Control valve 2 Body 2a Long side 2b Outer frame 5 Valve

Claims (2)

円形ではなく長尺辺を有するバルブにより構成される蝶弁式制御弁において、前記蝶弁式制御弁を構成するボデーの長尺辺および外枠の形状を直線ではなく外側に凸状となるようＲを付けたことを特徴とする蝶弁式制御弁。   In a butterfly valve type control valve constituted by a valve having a long side instead of a circle, the shape of the long side and outer frame of the body constituting the butterfly valve type control valve is convex outward rather than a straight line. A butterfly valve-type control valve with an R. 前記Ｒの寸法と前記長尺辺長さＬとの関係をＲ≒３０００００／Ｌとしたことを特徴とする請求項１記載の蝶弁式制御弁。
2. The butterfly valve control valve according to claim 1, wherein a relation between the dimension of R and the long side length L is R≈300000 / L.
JP2008033034A 2008-02-14 2008-02-14 Butterfly type control valve Pending JP2008144768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008033034A JP2008144768A (en) 2008-02-14 2008-02-14 Butterfly type control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008033034A JP2008144768A (en) 2008-02-14 2008-02-14 Butterfly type control valve

Related Parent Applications (1)

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JP2002259417A Division JP2004060630A (en) 2002-07-31 2002-07-31 Butterfly type control valve

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JP2008144768A true JP2008144768A (en) 2008-06-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728158A2 (en) 2012-11-01 2014-05-07 Aisin Seiki Kabushiki Kaisha Air intake control valve
US9121375B2 (en) 2012-11-01 2015-09-01 Aisin Seiki Kabushiki Kaisha Air intake control valve and air intake apparatus
US9683530B2 (en) 2014-03-18 2017-06-20 Aisin Seiki Kabushiki Kaisha Air intake apparatus and manufacturing method of air intake apparatus
US9732666B2 (en) 2014-03-18 2017-08-15 Aisin Seiki Kabushiki Kaisha Intake control valve and intake apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728158A2 (en) 2012-11-01 2014-05-07 Aisin Seiki Kabushiki Kaisha Air intake control valve
US9121375B2 (en) 2012-11-01 2015-09-01 Aisin Seiki Kabushiki Kaisha Air intake control valve and air intake apparatus
US9683530B2 (en) 2014-03-18 2017-06-20 Aisin Seiki Kabushiki Kaisha Air intake apparatus and manufacturing method of air intake apparatus
US9732666B2 (en) 2014-03-18 2017-08-15 Aisin Seiki Kabushiki Kaisha Intake control valve and intake apparatus

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