JPS63115979A - Electrically operated proportional control valve - Google Patents
Electrically operated proportional control valveInfo
- Publication number
- JPS63115979A JPS63115979A JP26131386A JP26131386A JPS63115979A JP S63115979 A JPS63115979 A JP S63115979A JP 26131386 A JP26131386 A JP 26131386A JP 26131386 A JP26131386 A JP 26131386A JP S63115979 A JPS63115979 A JP S63115979A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- stem
- valve seat
- proportional control
- valve stem
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000001141 propulsive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はモータの回転子と一体に構成された弁軸の回転
をねじ作用により直進運動に変換し弁座と弁の間の隙間
を変化させることにより流量を制御する電動式比例制御
弁に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention converts the rotation of a valve shaft, which is integrated with a motor rotor, into linear motion by screw action, thereby changing the gap between the valve seat and the valve. This invention relates to an electric proportional control valve that controls the flow rate.
従来の技術
従来より、モータの回転そのものを機械的に停止させる
構造を弁内に内蔵する電動式比例制御弁がある。2. Description of the Related Art Conventionally, there has been an electric proportional control valve that has a built-in structure for mechanically stopping the rotation of a motor itself.
以下図面を参照しながら、上述したような従来の電動式
比例制御弁について説明する。The conventional electric proportional control valve as described above will be described below with reference to the drawings.
第６図および第６図は従来の電動式比例制御弁を示すも
のである。第５図において、１は弁軸、２は弁座である
。３は前記弁軸１の先端に一体的に形成される弁、４は
前記弁３の後方に一体的に形成されるおねじである。6 and 6 show a conventional electric proportional control valve. In FIG. 5, 1 is a valve stem, and 2 is a valve seat. 3 is a valve integrally formed at the tip of the valve shaft 1, and 4 is a male thread integrally formed at the rear of the valve 3.
６は前記おねじの後方に一体的に形成されるスペーサ、
６は前記スペーサ６により一体的に深持される永久磁石
で、１８は前記弁軸１の後端に一体的に形成される軸受
端である。７は弁本体で８はめねじである。９は中心に
前記めねじ８を切った推進軸受で、前記おねじ４とはめ
あわされる。6 is a spacer integrally formed behind the male screw;
6 is a permanent magnet that is integrally supported by the spacer 6, and 18 is a bearing end that is integrally formed at the rear end of the valve shaft 1. 7 is the valve body and 8 is a female thread. 9 is a propulsion bearing having the female thread 8 cut in the center, and is fitted with the male thread 4.
１ｏは非磁性体からなるケースで、１４は前記ケース１
ｏに固定される軸受で、前記軸受端１８とはめあわされ
る。１１は固定子コイルで、前記永久磁石６に対応する
位置に固定される。１２および１３は流体の出入口であ
る。１６および１６は止めビンで、前記弁軸１上におね
じ４の両端部より少し離れた位置に固定される。１７は
丸形ビン状のストッパーで、前記止めどン１５および止
めどン１６の回転を制限している。第６図において、１
９は前記推進軸受９にほられた固定穴で、前記ストッパ
ー１７を貫通して固定している。1o is a case made of non-magnetic material, 14 is the case 1
A bearing fixed to the bearing end 18 is fitted to the bearing end 18. A stator coil 11 is fixed at a position corresponding to the permanent magnet 6. 12 and 13 are fluid inlets and outlets. Reference numerals 16 and 16 are stop pins, which are fixed on the valve shaft 1 at a position slightly apart from both ends of the screw 4. Reference numeral 17 denotes a round bottle-shaped stopper, which restricts the rotation of the stopper 15 and the stopper 16. In Figure 6, 1
Reference numeral 9 denotes a fixing hole formed in the propulsion bearing 9, which passes through the stopper 17 and is fixed therein.
以上のように構成された電動式比例制御弁について、以
下その動作について説明する。The operation of the electric proportional control valve configured as above will be described below.
まずモータの固定子コイル１１に所定量の通電をすると
永久磁石６および前記永久磁石６と一体的に形成された
スペーサ６が回転し、おねじ４とめねじ８のねじ作用に
よシ弁軸１は回転しなから閉弁方向あるいは開弁方向に
移動し、あらかじめ設定された弁軸位置で止めどン１５
あるいは止めビン１６とストッパー１７が接触して弁軸
の直進運動が停止させられる。前記弁軸位置は、たとえ
ば弁３が弁座２に密着して閉弁された状態においては弁
３はモータの回転子５，６により回転させられながら弁
座２におしつけられるので、弁３と弁座２の間に強いね
じ込み摩擦力が発生し、次の開弁運動が不能になるとい
ったことを避けるよう、弁３と弁座２間にきわめてわず
かな隙間があるように設定される。そのため、流量Ｑお
よび弁開度δとの関係は第４図のようになり、全閉状態
でもＱｏの流量が流れる。止めどン１６は閉弁方向運動
を停止、止めどン１６は開弁方向運動を停止するときに
はたらくものである。ここで、ビン状のストッパー１７
は推進軸受９面上に等角度で複数個はった固定穴１９の
うちの１ケ所に選択的に挿入することによって、ねじピ
ッチ内での軸方向の止め位置バラツキを少なくするよう
調整される。First, when a predetermined amount of current is applied to the stator coil 11 of the motor, the permanent magnet 6 and the spacer 6 formed integrally with the permanent magnet 6 rotate, and the valve shaft 1 is rotated by the screw action of the male screw 4 and the female screw 8. does not rotate, but moves in the valve closing direction or valve opening direction, and stops at the preset valve shaft position.
Alternatively, the stop pin 16 and the stopper 17 come into contact with each other, and the linear movement of the valve stem is stopped. For example, when the valve 3 is in close contact with the valve seat 2 and closed, the valve 3 is forced onto the valve seat 2 while being rotated by the rotors 5 and 6 of the motor. In order to avoid a situation where a strong threaded friction force is generated between the valve seats 2 and the next valve opening movement becomes impossible, a very small gap is set between the valve 3 and the valve seat 2. Therefore, the relationship between the flow rate Q and the valve opening degree δ is as shown in FIG. 4, and a flow rate of Qo flows even in the fully closed state. The stopper 16 functions to stop the movement in the valve closing direction, and the stopper 16 functions to stop the movement in the valve opening direction. Here, a bottle-shaped stopper 17
is selectively inserted into one of the plurality of fixing holes 19 formed at equal angles on the surface of the propulsion bearing 9, and adjusted to reduce variations in the axial stop position within the screw pitch. .
発明が解決しようとする問題点
しかしながら上記のような構成では、閉弁時に弁３と弁
座２間にわずかな隙間ができ、かつ機械的にモータの回
転運動を停止させるので、次のような欠点を有していた
。Problems to be Solved by the Invention However, with the above configuration, a small gap is created between the valve 3 and the valve seat 2 when the valve is closed, and the rotational movement of the motor is mechanically stopped. It had drawbacks.
（イ）閉弁状態にしても、弁３と弁座２の間のわずかな
隙間から流量が漏れる。(a) Even when the valve is closed, the flow rate leaks from the small gap between the valve 3 and the valve seat 2.
（ロ）止めビン１５．１６とストッパ１７の部品加工精
度、組付精度に高いレベルが要求され、したがって高価
となる。(b) A high level of accuracy is required in the processing and assembly of the stopper pins 15, 16 and the stopper 17, which results in high costs.
（ハ）ストッパ１７の挿入位置が複数個の固定穴１９か
らの選択のため、軸方向停止位置のバラツキ縮少に限度
がある。(c) Since the insertion position of the stopper 17 is selected from a plurality of fixing holes 19, there is a limit to reducing the variation in the axial stop position.
本発明は上記欠点に鑑み、弁の最大直径を弁座の開口部
直径よりも短かくし、弁軸の直径を弁座の直径よりも長
くし、閉弁時には、弁軸が弁座に密接することにより、
弁と弁座の間に強いねじ込み摩擦力が働く前に弁軸の直
進運動そのものを停止させ、かつ流量が漏れない電動式
比例制御弁を提供するものである。In view of the above drawbacks, the present invention makes the maximum diameter of the valve shorter than the opening diameter of the valve seat, and the diameter of the valve stem is made longer than the diameter of the valve seat, so that the valve stem is in close contact with the valve seat when the valve is closed. By this,
To provide an electric proportional control valve which stops the linear movement of a valve shaft itself before a strong screw friction force acts between the valve and a valve seat, and prevents flow leakage.
問題点を解決するための手段
この目的を達成するだめに本発明の電動式比例制御弁は
、おねじを有し、かつ先端に連結部を有する弁軸と、弁
軸の先端連結部に滑動自在にはめ合わされる係合部を有
するテーパ状の弁と、閉弁時、弁と密接する弁座と、弁
を弁軸に当接させておくよう付勢し、かつ一端が弁座に
当接するバネから構成されている。Means for Solving the Problems In order to achieve this object, the electric proportional control valve of the present invention has a valve shaft having an external thread and a connecting portion at the tip thereof, and a sliding portion on the connecting portion at the tip of the valve stem. A tapered valve has an engaging part that can be freely fitted together, a valve seat that comes into close contact with the valve when the valve is closed, and a valve seat that biases the valve to keep it in contact with the valve stem and has one end that contacts the valve seat. Consists of springs that touch each other.
作 用
この構成によって、閉弁時にはバネの付勢力によりおね
じを有する弁軸に連結部と係合部によって滑動自在には
め合わされた弁が回転せずに弁座に密接し、弁と弁座の
間に強いねじ込み摩擦力が働かずに弁軸の直進運動その
ものを停止させ、かつ流量が漏れないこととなる。Effect: With this configuration, when the valve is closed, the valve, which is slidably fitted to the male-threaded valve stem by the connecting part and the engaging part, comes into close contact with the valve seat without rotating due to the biasing force of the spring, and the valve and the valve seat are The straight movement of the valve stem itself is stopped without any strong screwing friction force acting during the process, and the flow rate does not leak.
実施例
以下本発明の一実施例について、図面を参照しながら説
明する。EXAMPLE An example of the present invention will be described below with reference to the drawings.
第１図および第２図は本発明の実施例における電動式比
例制御弁の構造を示すものである。第２図において、５
１は弁軸で、４は前記弁軸６１に切られたおねじで、５
２は弁座である。６３は前記弁軸５１の先端連結部１０
１にはめ合わされる係合部１０２を有するテーパ状の弁
で、５４は前記弁５３を前記弁軸５１に当接させるよう
付勢し、かつ一端が前記弁座６２に当接するバネである
。1 and 2 show the structure of an electric proportional control valve in an embodiment of the present invention. In Figure 2, 5
1 is a valve stem, 4 is a male thread cut into the valve stem 61, and 5 is a male thread cut into the valve stem 61.
2 is the valve seat. 63 is the tip connecting portion 10 of the valve shaft 51
1, and 54 is a spring that urges the valve 53 to come into contact with the valve shaft 51 and has one end that comes into contact with the valve seat 62.
５６は前記弁軸５１の後方に一体的に形成されるスペー
サで、６は前記スペーサ６６に一体的に保持される永久
磁石である。了は弁本体で、８ばめねじである。５９は
中心に前記めねじ８を切った推進軸受で、前記おねじ４
とはめあわされる。56 is a spacer integrally formed behind the valve shaft 51, and 6 is a permanent magnet integrally held by the spacer 66. The end is the valve body, which has an 8-fit thread. 59 is a propulsion bearing with the female thread 8 cut in the center, and the male thread 4
It is combined with.
６０は非磁性体からなるケースで、１１は前記永久磁石
ｅに対応する位置に固定された固定子コイルである。１
２および１３は流体の出入口である。60 is a case made of a non-magnetic material, and 11 is a stator coil fixed at a position corresponding to the permanent magnet e. 1
2 and 13 are fluid inlets and outlets.
第１図において６１は弁軸で、４は前記弁軸５１に切ら
れたおねじで、６２は弁座である。６３は前記弁軸５１
の先端連結部１０１にはめ合わされる係合部１０２を有
するテーパ状の弁で、６４は前記弁６３を前記弁軸５１
に当接させるよう付勢し、かつ一端が前記弁座６２に当
接するバネである。In FIG. 1, 61 is a valve stem, 4 is a male thread cut on the valve stem 51, and 62 is a valve seat. 63 is the valve shaft 51
64 is a tapered valve having an engaging part 102 that is fitted into a distal end connecting part 101 of the valve 63.
The valve seat 62 is a spring that is biased to contact the valve seat 62 and has one end that contacts the valve seat 62.
以上のように構成された電動式比例制御弁について、以
下その動作を説明する。The operation of the electric proportional control valve configured as above will be described below.
まずモータの固定子コイル１１に所定景の通電をすると
ケース６０の内部にある永久磁石ｅおよび前記永久磁石
θと一体的に形成されたスペーサ６６が回転し、おねじ
４と弁本体７に固定された推進軸受５９の中心に切られ
ためねじ８のねじ作用により弁軸５１は回転しなから閉
弁方向あるいは開弁方向に移動する。開弁時にはスペー
サ５６が回転しながらケース６０に当接することにより
弁軸６１の直進運動そのものを停止させ、閉弁時にはバ
ネ５４の付勢力によりおねじ４を有する弁軸５１に連結
部１０１と係合部１０２によって滑動自在にはめ合わさ
れた弁６３が回転せずに弁座５２に密接し、弁５３と弁
座５２の間に強いねじ込み摩擦力が働かずに弁軸５１の
直進運動そのものを停止させ、かつ流量が漏れないよう
にすることができる。ここで、流量Ｑおよび弁開度δと
の関係は第３図のようになり、閉弁状態には流量が零と
なる。また高精度の加工を要する部品の廃止、精度の高
い組付・調整工程の廃止などにともない、極めて安価に
製造することができる。First, when the stator coil 11 of the motor is energized to a predetermined degree, the permanent magnet e inside the case 60 and the spacer 66 formed integrally with the permanent magnet θ rotate and are fixed to the male screw 4 and the valve body 7. Due to the screw action of the internal thread 8 cut in the center of the propulsion bearing 59, the valve shaft 51 does not rotate but moves in the valve closing direction or the valve opening direction. When the valve is opened, the spacer 56 rotates and comes into contact with the case 60, thereby stopping the linear motion of the valve shaft 61. When the valve is closed, the valve shaft 51 having the external thread 4 is engaged with the connecting portion 101 by the biasing force of the spring 54. The valve 63 that is slidably fitted together by the joint 102 does not rotate and comes into close contact with the valve seat 52, and the linear movement of the valve shaft 51 itself is stopped without strong threaded frictional force acting between the valve 53 and the valve seat 52. It is possible to prevent the flow rate from leaking. Here, the relationship between the flow rate Q and the valve opening degree δ is as shown in FIG. 3, and the flow rate is zero in the valve closed state. Furthermore, by eliminating parts that require high-precision machining and eliminating high-precision assembly and adjustment processes, it can be manufactured at an extremely low cost.
発明の効果
以上のように本発明は弁軸の先端連結部に滑動自在には
め合わされる係合部を有するテーパ状の弁と、閉弁時前
記弁と密接する弁座と、前記弁を前記弁軸に当接させて
おくよう付勢し、かつ一端が前記弁座に当接するバネを
設けることにより、弁と弁座の間に強いねじ込み摩擦力
が働かずに弁軸の直進運動そのものを停止させ、かつ流
量が漏れないようにすることができ、また高精度の加工
を要する部品の廃止、精度の高い組付・調整工程の廃止
などにともない、極めて安価に製造することができる。Effects of the Invention As described above, the present invention provides a tapered valve having an engaging portion that is slidably fitted into a connecting portion at the tip of a valve shaft, a valve seat that comes into close contact with the valve when the valve is closed, and By providing a spring that is biased to keep the valve stem in contact and one end of which is in contact with the valve seat, the linear movement of the valve stem itself is prevented without creating a strong threaded friction force between the valve and the valve seat. It can be stopped and the flow rate can be prevented from leaking, and it can be manufactured at an extremely low cost by eliminating parts that require highly accurate machining and eliminating highly accurate assembly and adjustment processes.
第１図は本発明の電動式比例制御弁における弁部断面図
、第２図は本発明の電動式比例制御弁の一構成例を示す
縦断側面図、第３図は本発明の電動式比例制御弁の弁開
度−流量特性を示すグラフ、第４図は従来の電動式比例
制御弁の弁υＨ度−流量特性を示すグラフ、第５図は従
来の電動式比例制御弁の一構成例を示す縦断側面図、第
６図は従来の推進軸受の斜視図である。
４・・・・・・おねじ、６・・・・・・磁性体、７・・
・・・・弁本体、８・・・・・・めねじ、１１・・・・
・・固定子コイル、６１・・・・・・弁軸、５２・・・
・・・弁座、５３・・・・・・弁、６４・・・・・・バ
ネ、６５・・・・・・スペーサ、６９・・・・・・推進
軸受、６ｏ・・・・・・ケース、１０１・・・・・・連
結部、１０２・・・・・・係合部。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名４−
′Ｆ−５ねシ
ロンー弁鞠
１０２−一憬合部
第１図
４− ｈｄＷび
６−λ窺・勘本
グー弁木う木
８−めねし
１１−歓予コ１２し
Ｗ−ケース
１０１−餌祁
第３図
第４図
升閲浅δ
第５図
第６図FIG. 1 is a cross-sectional view of the valve portion of the electric proportional control valve of the present invention, FIG. 2 is a longitudinal side view showing an example of the configuration of the electric proportional control valve of the present invention, and FIG. 3 is a cross-sectional view of the electric proportional control valve of the present invention. A graph showing the valve opening degree vs. flow rate characteristic of a control valve. Figure 4 is a graph showing the valve υH degree vs. flow rate characteristic of a conventional electric proportional control valve. Figure 5 is a configuration example of a conventional electric proportional control valve. FIG. 6 is a perspective view of a conventional propulsion bearing. 4...Male thread, 6...Magnetic material, 7...
...Valve body, 8...Female thread, 11...
...Stator coil, 61...Valve shaft, 52...
... Valve seat, 53 ... Valve, 64 ... Spring, 65 ... Spacer, 69 ... Propulsion bearing, 6o ... Case, 101...Connection part, 102...Engagement part. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
'F-5 Neshiron-Benmari 102-Ichigo-join part Fig. 1 4- hdW 6-λKi/Kanmoto Gu Benki Uki 8-Meneshi 11-Kanyoko 12Shi W-Case 101- Figure 3, figure 4, shallow delta, figure 5, figure 6
Claims (1)
した固定子コイルと、前記ケース内に収納したおねじを
有する弁軸と、前記おねじと前記弁軸とを一体的に形成
し、かつ前記固定子コイルへの通電により回転する磁性
体と、前記磁性体を保持し、かつ全開時前記ケース上部
に当接するスペーサから成るモータ回転子と、前記モー
タ回転子の回転を前記弁軸の直進運動に変換するめねじ
を切った推進軸受と、前記弁軸の先端連結部に滑動自在
にはめ合わされる係合部を有するテーパ状の弁と、閉弁
時前記弁と密接する弁座と、前記弁を前記弁軸に当接さ
せておくよう付勢し、かつ一端が前記弁座に当接するバ
ネとを有することを特徴とする電動式比例制御弁。A case made of a non-magnetic material, a stator coil fixed to the outer periphery of the case, a valve stem having a male thread housed in the case, and the male thread and the valve stem are integrally formed, and a motor rotor comprising a magnetic body that rotates when the stator coil is energized, a spacer that holds the magnetic body and comes into contact with the upper part of the case when fully opened, and a motor rotor that controls the rotation of the motor rotor to the valve shaft. a propulsion bearing with a female thread for converting the motion into a straight motion; a tapered valve having an engaging portion that is slidably fitted to a connecting portion at the tip of the valve shaft; and a valve seat that comes into close contact with the valve when the valve is closed; An electric proportional control valve, comprising a spring that biases the valve to keep it in contact with the valve shaft and has one end in contact with the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26131386A JPS63115979A (en) | 1986-10-31 | 1986-10-31 | Electrically operated proportional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26131386A JPS63115979A (en) | 1986-10-31 | 1986-10-31 | Electrically operated proportional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63115979A true JPS63115979A (en) | 1988-05-20 |
Family
ID=17360058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26131386A Pending JPS63115979A (en) | 1986-10-31 | 1986-10-31 | Electrically operated proportional control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63115979A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751851A (en) * | 1980-09-08 | 1982-03-26 | Mitsubishi Rayon Co | Method and apparatus of jacquard electronic circular knitting machine |
| JPS5727485B2 (en) * | 1974-11-30 | 1982-06-10 |
-
1986
- 1986-10-31 JP JP26131386A patent/JPS63115979A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727485B2 (en) * | 1974-11-30 | 1982-06-10 | ||
| JPS5751851A (en) * | 1980-09-08 | 1982-03-26 | Mitsubishi Rayon Co | Method and apparatus of jacquard electronic circular knitting machine |
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