JPS6025023Y2 - Rotary valve drive mechanism - Google Patents
Rotary valve drive mechanismInfo
- Publication number
- JPS6025023Y2 JPS6025023Y2 JP10830580U JP10830580U JPS6025023Y2 JP S6025023 Y2 JPS6025023 Y2 JP S6025023Y2 JP 10830580 U JP10830580 U JP 10830580U JP 10830580 U JP10830580 U JP 10830580U JP S6025023 Y2 JPS6025023 Y2 JP S6025023Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve shaft
- valve
- lever
- shaft support
- ring
- 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
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Description
【考案の詳細な説明】
(1)考案の目的
(産業上の利用分野)
この考案はバタフライ弁等回転弁の駆動機構に関するも
のである。[Detailed Description of the Invention] (1) Purpose of the Invention (Field of Industrial Application) This invention relates to a drive mechanism for a rotary valve such as a butterfly valve.
(従来技術と解決すべき課題)
バタフライ弁などの回転弁を、とくに手動で駆動するた
め、たとえば、弁外に突出した弁軸端にウオームギヤを
固定し、これとかみ合うウオームに取着したバンドルを
回動するように構成したもの、弁軸端に手動用のレバー
を固するとともに、弁軸側にもうけた鋸歯状部材に弾性
的に常時係合する係合爪を対向させ、前記レバーの操作
時に該爪を鋸歯状部材から弾性に抗して抜脱させてレバ
ーを回動させるようにしたものなどが従来からひろく実
用されている。(Prior art and problems to be solved) In order to manually drive a rotary valve such as a butterfly valve, for example, a worm gear is fixed to the end of the valve shaft that protrudes outside the valve, and a bundle attached to a worm that meshes with the worm gear is attached. A manual lever is fixed at the end of the valve shaft, and an engaging pawl that is elastically engaged at all times with a serrated member provided on the valve shaft side is opposed, so that the lever can be operated. Conventionally, devices have been widely used in which the lever is rotated by removing the pawl from the serrated member against elasticity.
さらに、近来たとえば、特開昭53−12802@公報
などにみられるように、弁本体の突状の弁軸支持部内に
、ポリウレタンなどの有弾性合成樹脂からなるスリーブ
を固装し、この内部に弁軸ならびに操作用バンドルを装
着し、弁軸外面およびスリーブ内面を適宜の形状に形成
して、該スリーブの弾性を利用して弁開閉操作をおこな
うようなものも提案されている。Furthermore, in recent years, for example, as seen in Japanese Patent Application Laid-Open No. 53-12802@, a sleeve made of elastic synthetic resin such as polyurethane is fixed inside the protruding valve shaft support part of the valve body. It has also been proposed that a valve stem and an operating bundle are attached, the outer surface of the valve stem and the inner surface of the sleeve are formed into appropriate shapes, and the valve is opened and closed using the elasticity of the sleeve.
このような駆動機構、たとえば、ウオームとウオームギ
ヤを用いるものは、一見してわかるように弁に対して駆
動部分の大きさが大きすぎて外観がこのましくなく、こ
のような感じは弁が小さいほど著しい。This type of drive mechanism, for example, one that uses a worm and worm gear, has an undesirable appearance because the size of the drive part is too large compared to the valve, as you can see at first glance, and this feeling is because the valve is small. It's quite remarkable.
また前記後者のものは可動部分が曝露されているので環
境の影響を受けやすく、部品点数も多くなるなどコスト
面の難点をまぬかれなかった。In addition, the latter type has exposed moving parts, so it is easily affected by the environment, and the number of parts increases, making it difficult to avoid costs.
また、前述の合成樹脂スリーブを用いるようなものも、
弁開閉時に変形するスリーブは、弁本体などを構成する
金属のような剛性材料に比してはるかに強度が小さいの
で、弁開閉ごとにスリーブにあたえる変形、たわみなど
による摩耗、疲労がおおきく、長期にわたって安定して
作動させることが困難であり、さらに、摩損した場合に
は弁全体を交換する必要があるので、ランニングコスト
のアツツプが、側倒の弁自体のコスト低減効果を相殺す
る欠点をまぬかれなかった。In addition, those using the synthetic resin sleeve mentioned above,
The sleeve, which deforms when the valve is opened and closed, has much lower strength than the rigid material such as metal that makes up the valve body, so the sleeve is subject to significant wear and fatigue due to deformation and deflection each time the valve is opened and closed. It is difficult to operate stably over a long period of time, and the entire valve must be replaced if it wears out, so the increased running costs outweigh the cost reduction effect of the side-tiling valve itself. It didn't get wet.
この考案は以上のような現状にかんがみてなされたもの
であって、操作レバーと回転弁の弁軸端との結合部分に
、弁軸の長さ方向にも、半径方向にも比較的小さいスペ
ース内に有弾性の合成樹脂からなるロックリングを配し
、その変形を利用して弁の開閉をおこなうにあたり、そ
の変形がなるべく広範囲に分散されるようにしてロック
リング材の耐久性を向上させ、とくに付加機構を用いる
ことなく弁の全開、全閉位置規制をおこなえるようにし
、さらに、全体を密閉構造とし、しかも分解組立ても容
易で長期にわたって安定した動作が得られ、保守が簡単
でコストダウンに資するところの大きい回転弁の駆動機
構を提供することを目的とするものである。This idea was devised in view of the current situation as described above, and requires a relatively small space in the lengthwise and radial direction of the valve shaft at the joint between the operating lever and the end of the valve shaft of the rotary valve. A lock ring made of elastic synthetic resin is placed inside, and the deformation is used to open and close the valve, and the durability of the lock ring material is improved by dispersing the deformation as widely as possible. In particular, it is possible to regulate the fully open and fully closed positions of the valve without using any additional mechanism, and the entire structure is sealed, and it is easy to disassemble and assemble, providing stable operation over a long period of time, making maintenance easy and reducing costs. The object of the present invention is to provide a drive mechanism for a rotary valve that is of great help.
(2)考案の構成
(課題を解決する技術手段、その作用)
上記の目的を遠戚するために、この考案においては、弁
本体側弁軸支持突部内に、適度の弾性をそなえかつ内部
に方形の貫通孔を形成した合成樹脂製ロックリングを固
設し、前記貫通孔内に、弁軸端に係止したレバーの端部
を位置させるとともにレバ一端部を不回動状に装着し、
かつ前記口゛ンクリングの貫通孔の対角線方向に一致す
る方向に長軸を有する断面はぼ楕円形状にしかもその周
面が前記貫通孔の各壁面にそれぞれ当接するように構威
し・、前記ロックリングの1組の対壁面外側に空所を、
また前記構成部分上部には密閉機構をもうけてなるもの
である。(2) Structure of the device (technical means for solving the problem and its function) In order to achieve the above-mentioned purpose, in this device, the valve shaft supporting protrusion on the valve body side is provided with appropriate elasticity and internally. A synthetic resin lock ring having a rectangular through hole is fixedly installed, and an end of a lever that is locked to the end of the valve shaft is positioned in the through hole, and one end of the lever is installed in a non-rotatable manner.
and the cross section of the lock ring having a long axis in a direction coinciding with the diagonal direction of the through hole is configured to be approximately elliptical, and the peripheral surface thereof is in contact with each wall surface of the through hole, respectively. Create a void on the outside of one set of rings facing the opposite wall.
Further, a sealing mechanism is provided on the upper part of the component.
このように構成することによって、弁開閉時におけるロ
ックリングの変形はひと組の対壁面の全体にわたって生
ずるので耐久性が向上するばかりでなく、弁の全開、全
閉位置の規制に付加機構を必要としないので其の構威が
簡単になる。With this configuration, the deformation of the lock ring occurs over the entire set of facing walls when the valve is opened and closed, which not only improves durability, but also requires an additional mechanism to regulate the fully open and fully closed positions of the valve. Since it is not necessary, its structure becomes simple.
(実施例の説明)
第1図はこの考案による駆動機構を示す断面図であって
、弁本体と一体でこれから外方にのびている弁軸支持突
部1内中空部には、弁板などの弁内回転部材に取り付け
た弁軸3の端部多角形状部31が位置している。(Description of Embodiment) Fig. 1 is a cross-sectional view showing the drive mechanism according to this invention, in which a valve plate, etc. An end polygonal portion 31 of the valve shaft 3 attached to the internal rotating member of the valve is located.
該多角形状部31は操作レバー2の端部にもうけた同形
の孔に挿入された両者は回動力向に一体的に形成しであ
る。The polygonal portion 31 is inserted into a hole of the same shape formed at the end of the operating lever 2, and both are integrally formed in the rotational direction.
前記弁軸支持突部内の中空部は比較的的大径の孔となっ
ており、前記弁軸端部22の外周面と弁軸支持突部内周
面とのあいだにほぼ環状の空所が形成されており、ここ
に後述ロックリング5が配されている。The hollow portion in the valve shaft support protrusion is a hole with a relatively large diameter, and a substantially annular space is formed between the outer peripheral surface of the valve shaft end portion 22 and the inner peripheral surface of the valve shaft support projection. A lock ring 5, which will be described later, is arranged here.
前記レバー2には大径部21が形成されておりその直径
はほぼ前記弁軸支持部のそれにひとしくなっている。A large diameter portion 21 is formed in the lever 2, and its diameter is approximately equal to that of the valve shaft support portion.
大径部21の下方には、弁軸支持突部2の段部に対応す
る段部が形成されていて、これら両段部の間に半径方向
断面がほぼL字状に形成されたブツシュ6が配設されて
いる。A step portion corresponding to the step portion of the valve shaft support protrusion 2 is formed below the large diameter portion 21, and a bush 6 having a substantially L-shaped radial cross section is formed between these step portions. is installed.
前記弁軸支持突部の頂面と前記レバー2の大径部21下
面とのあいだにはO−リング7が配されている。An O-ring 7 is disposed between the top surface of the valve shaft support projection and the lower surface of the large diameter portion 21 of the lever 2.
弁軸支持突部1の上部外面には少なくとも2個程度、こ
のましくは4個程度の突部(図にはそのうちの2個11
.12が示しである)が形成してあり、これに第3図に
示すようなカバーリング4の、対応する孔41.42・
・・・・・が係合してカバーリング4を固定している。There are at least two, preferably four, protrusions on the upper outer surface of the valve stem support protrusion 1 (two of them 11 are shown in the figure).
.. 12) are formed, and corresponding holes 41, 42 and 42 are formed in the cover ring 4 as shown in FIG.
... are engaged to fix the cover ring 4.
カバーリングは上部開口43と肩部44とを有しており
、これをレバ一端から挿入して第1図にし・めすように
装着固定する。The cover ring has an upper opening 43 and a shoulder portion 44, and is inserted into the cover ring from one end of the lever and fitted and fixed in a female manner as shown in FIG.
前記肩部44と大径部21とを係合させ、開口41.4
2等と突部11.12等とを係合させて、肩部44と開
口41間の距離を適当に定めることによって、カバーリ
ング4を大径部21に強固に密着させることができる。The shoulder portion 44 and the large diameter portion 21 are engaged to open the opening 41.4.
By engaging the protrusions 11, 12, etc. and appropriately determining the distance between the shoulder 44 and the opening 41, the cover ring 4 can be firmly attached to the large diameter portion 21.
レバ一端22外周面とこれに対応する弁軸支持突部1と
の間の環状空間には適度の可とう性を有する合成樹脂の
ロックリング5が配設されている。A lock ring 5 made of synthetic resin having appropriate flexibility is disposed in an annular space between the outer peripheral surface of the lever end 22 and the corresponding valve shaft support protrusion 1.
ロックリング5は弁軸軸線方向には前記ブツシュ6の下
方いっばいに前記環状空間内に位置しており、その断面
形状は第2図にしめすように構威しである。The lock ring 5 is located within the annular space below the bush 6 in the direction of the valve shaft axis, and its cross-sectional shape is as shown in FIG.
すなわち、内側にほぼ正方形状の貫通孔55を有する角
状となっており、一方の対辺の外側には対応する弁軸支
持突部1の凹部に密着してロックリング5の回動を阻止
する突部51,52が形成されている。That is, it has a rectangular shape with a substantially square through hole 55 on the inside, and the outside of one opposite side tightly fits into the recess of the corresponding valve shaft support protrusion 1 to prevent rotation of the lock ring 5. Projections 51 and 52 are formed.
また前記ロックリングの他方の対辺の外側には前記と同
様の突部をもうけその外面に凹溝53,54をもうけて
前記弁軸支持突部内の円弧状の空所内壁面15に対向せ
しめである。Further, a protrusion similar to the above is provided on the outside of the other opposite side of the lock ring, and concave grooves 53 and 54 are provided on the outer surface of the protrusion to face the inner wall surface 15 of the arc-shaped cavity in the valve shaft support protrusion. .
ロックリング5内の前記方形の貫通孔55内には、第1
図かられかるように、レバ一端部22が挿入しである。In the rectangular through hole 55 in the lock ring 5, a first
As can be seen from the figure, one end 22 of the lever is inserted.
該レバ一端部は、第2図かられかるように、断面はぼ楕
円形状なっておりその長軸方向が貫通孔55の対角線方
向をとったときに、第2図にしめすように、その外周面
が前記方形貫通孔55の内壁面に当接して安定してその
位置を維持するようになっている。As shown in FIG. 2, one end of the lever has a roughly elliptical cross section, and when its long axis direction is diagonal to the through hole 55, its outer periphery extends as shown in FIG. The surface comes into contact with the inner wall surface of the rectangular through hole 55 and stably maintains its position.
シタがって、レバー2、すなわちレバ一端22を図示反
時計方向に回動すると、その長軸端部は凹溝53,54
を有する面を押圧しながら90°回転して第2図と同様
な安定した位置をとり、これにしたがって不図示の、弁
板などの回転部材も全開から全閉へ、またはその逆に回
転する。When the lever 2, that is, the one end 22 of the lever is rotated in the counterclockwise direction shown in the figure, the long axis end thereof is inserted into the grooves 53, 54.
It rotates 90 degrees while pressing the surface having a . .
このとき前記突部51,52の存在によってロックリン
グ5がうごくことはなく、特別のストッパなどを要シな
い。At this time, the lock ring 5 does not move due to the presence of the protrusions 51 and 52, and no special stopper or the like is required.
なお、レバー先端部22の形状は正確な楕円形である必
要はなく楕円形の短軸に相当する部分近傍を方形貫通孔
55の一辺の2分の1程度の半径Rの四分円弧状とし、
長軸に相当する端部を前記半径Rの2分の1程度の半径
rに相当する円弧状として、全体をなめらかな曲線で接
続形成してもよい。Note that the shape of the lever tip 22 does not need to be a precise ellipse, and the vicinity of the portion corresponding to the short axis of the ellipse may be a quarter-circular arc with a radius R that is approximately one-half of one side of the square through-hole 55. ,
The end portion corresponding to the long axis may be formed into a circular arc shape corresponding to a radius r that is approximately half of the radius R, and the entire portion may be connected with a smooth curve.
(3)考案の効果
この考案は以上説明した構成をそなえているから、弁の
弁軸支持突部とレバーとの連結部分の構成をきわめて小
さくすることができ、さらに駆動部分がすべて弁軸の長
手方向にあり、さらに環境に曝露されることがないので
防水、防塵効果が犬である。(3) Effects of the invention Since this invention has the structure explained above, the structure of the connecting part between the valve shaft support projection of the valve and the lever can be made extremely small, and furthermore, all the driving parts are connected to the valve shaft. It is in the longitudinal direction and is not exposed to the environment, so it is waterproof and dustproof.
しかもロックリングの壁面の材質、厚みおよび外側凹溝
の大きさを適当に定めることによってロックリングの摩
耗を可及的に小さくすることができる。Moreover, wear of the lock ring can be minimized by appropriately determining the material and thickness of the wall surface of the lock ring and the size of the outer groove.
また、弁の開閉位置を定めるためのストッパなどの手段
をとくに必要とせず、構造がきわめて簡単になりコスト
ダウンに資するところが大である。Furthermore, there is no need for any special means such as a stopper for determining the opening/closing position of the valve, which greatly simplifies the structure and greatly contributes to cost reduction.
第1図は本考案の駆動機構の断面図、第2図はロックリ
ングの横断面図、第3図はカバーリングの斜面図である
。
1・・・・・・弁軸支持突部、2・・・・・・レバー、
3・・・・・・弁軸、4・・・・・・カバーリング、5
・・・・・・ロックリング、6・・・・・・ブツシュ、
7・・・・・・O−リング。FIG. 1 is a sectional view of the drive mechanism of the present invention, FIG. 2 is a cross-sectional view of the lock ring, and FIG. 3 is a perspective view of the cover ring. 1...Valve shaft support protrusion, 2...Lever,
3... Valve stem, 4... Covering, 5
・・・・Lock ring, 6・・・・Butushu,
7...O-ring.
Claims (1)
、これに操作用のレバー2を固定し、前記弁軸支持突部
的中空部に有弾性の合成樹脂からなり、内部に方形の貫
通孔55をもうけたロックリング5を配し前記貫通孔の
一対の対辺の外側に凹溝53,54をもうけるとともに
、前記弁軸端に固定したレバー2の端部22の外周面を
、前記貫通孔55の方向と一致する方向にのびる長軸を
有するほぼ楕円形状に形成してその外周を前記貫通孔5
5の各壁面に当接するように形成し、弁軸軸線方向にみ
てロックリング5、弁軸端22よりも外方において、前
記弁軸支持突部1端面とレバー2の大径部21との間に
O−リング7を配し、該0−IJングを圧接する方向に
、前記大径部21から弁軸支持突部頂部近傍までを被覆
するカバーリング4を配してなる回転弁の駆動機構。A valve shaft end is made to protrude into a hollow part within a valve shaft support projection 1 of a rotary valve, an operating lever 2 is fixed thereto, and the hollow part of the valve shaft support projection 1 is made of elastic synthetic resin, A lock ring 5 having a rectangular through hole 55 inside is arranged, grooves 53 and 54 are formed on the outside of a pair of opposite sides of the through hole, and the outer periphery of the end 22 of the lever 2 fixed to the end of the valve shaft. The surface is formed into a substantially elliptical shape having a long axis extending in a direction coinciding with the direction of the through hole 55, and the outer periphery thereof is
5, and the end surface of the valve shaft support protrusion 1 and the large diameter portion 21 of the lever 2 are formed so as to be in contact with each wall surface of the lever 2, outwardly from the lock ring 5 and the valve shaft end 22 when viewed in the axial direction of the valve shaft. Driving a rotary valve in which an O-ring 7 is disposed between them, and a cover ring 4 covering the area from the large diameter portion 21 to the vicinity of the top of the valve shaft support protrusion is disposed in the direction in which the O-IJ ring is pressed. mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10830580U JPS6025023Y2 (en) | 1980-08-01 | 1980-08-01 | Rotary valve drive mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10830580U JPS6025023Y2 (en) | 1980-08-01 | 1980-08-01 | Rotary valve drive mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5732274U JPS5732274U (en) | 1982-02-19 |
JPS6025023Y2 true JPS6025023Y2 (en) | 1985-07-26 |
Family
ID=29469566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10830580U Expired JPS6025023Y2 (en) | 1980-08-01 | 1980-08-01 | Rotary valve drive mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6025023Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3623214B2 (en) * | 2002-08-29 | 2005-02-23 | ミツワガス機器株式会社 | 180 ° rotating waterproof gas stopper |
-
1980
- 1980-08-01 JP JP10830580U patent/JPS6025023Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5732274U (en) | 1982-02-19 |
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