JPS58106205A - Actuator - Google Patents

Actuator

Info

Publication number
JPS58106205A
JPS58106205A JP20282881A JP20282881A JPS58106205A JP S58106205 A JPS58106205 A JP S58106205A JP 20282881 A JP20282881 A JP 20282881A JP 20282881 A JP20282881 A JP 20282881A JP S58106205 A JPS58106205 A JP S58106205A
Authority
JP
Japan
Prior art keywords
opening
pressure chamber
atmospheric pressure
case
diaphragm
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.)
Granted
Application number
JP20282881A
Other languages
Japanese (ja)
Other versions
JPS6139522B2 (en
Inventor
Yasuhiro Makibayashi
康広 槙林
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.)
Taiho Kogyo Co Ltd
Original Assignee
Taiho Kogyo 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 Taiho Kogyo Co Ltd filed Critical Taiho Kogyo Co Ltd
Priority to JP20282881A priority Critical patent/JPS58106205A/en
Publication of JPS58106205A publication Critical patent/JPS58106205A/en
Publication of JPS6139522B2 publication Critical patent/JPS6139522B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

PURPOSE:To prevent a diaphragm from being damaged on account of intrusion of dust by installing a member for preventing intrusion of dust into an atmospheric pressure chamber from outside, at the opening part into which an operating rod is freely inserted. CONSTITUTION:The opening/closing lever of a gate valve is operated in reciprocating turn, concurrently with rise/lowering of an operating rod 12. Accordingly, even if the operating rod 12 swings, preventive members 16 and 17 slide relatively to a case, in response to said swing, so operation of the operating rod 12 is not suppressed. Further, during operation, an opening 8 having a comparatively large diameter and openings 21 and 22 each having a nearly equal diameter to that of the opening 8 keep air-permeability owing to preventive members 16 and 17, or are closed, keeping the min. gap left, so trouble of intrusion of dust into an atmospheric pressure chamber 6 can be reduced in comparison with a conventional type.

Description

【発明の詳細な説明】 本発明は流体圧力によって作動されるダイアフラムを備
えたアクチェータに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an actuator with a diaphragm operated by fluid pressure.

ダイアフラムを備えた従来一般のアクチェータは、ケー
ス内をｌイアフラムで２室に区画し、一方の室を正圧若
しくは負圧が導入される圧力室、他方の室を大気に開放
した大気圧室としている。Conventional actuators equipped with a diaphragm divide the inside of the case into two chambers, one of which is a pressure chamber into which positive or negative pressure is introduced, and the other is an atmospheric pressure chamber that is open to the atmosphere. There is.

そしてこの種のアクチェータでは、上記大気圧室を大気
に連通させる開口を利用して・この内部に上記ダイアフ
ラムに連結した作動ロッドを遊嵌貫通させるようにして
いるのが普通であり、このように作動ロッドを開口内に
遊嵌貫通させたア久ｔ工−タでは、ダイアフラムの柔軟
性と相まって、例えば被作動部材としてのレバーを往復
回転駆動させる場合のように、作動ロッドに往復動と揺
動とが加わっても、その作動に支障をきたさないという
利点がある。しかしながらその反面、上記開口の縁部と
作動ロッドとの間の間隙が大きくなることから、その間
隙から大気圧室内に塵埃が進入し易くな゛す、その塵埃
がダイアフラムを破損させる虞れがあった。In this type of actuator, the actuating rod connected to the diaphragm is usually loosely inserted through the opening that communicates the atmospheric pressure chamber with the atmosphere. In an actuator in which the actuating rod is loosely inserted into the opening, combined with the flexibility of the diaphragm, the actuating rod is capable of reciprocating and oscillating motion, such as when driving a lever as an actuated member in reciprocating rotation. It has the advantage that even if motion is applied, it does not interfere with its operation. However, on the other hand, since the gap between the edge of the opening and the actuating rod becomes larger, it becomes easier for dust to enter the atmospheric pressure chamber through that gap, and there is a risk that the dust may damage the diaphragm. Ta.

を防止する防止部材を設け、これによりダイアフラムの
破損を防止できるようにしたアクチェータを提供するも
のである。To provide an actuator that is provided with a prevention member that prevents damage to the diaphragm.

以下図示実施例について本発明を説明すると、第１図に
おいて、（１）はアッパーケース（２）とロワーケース
（３）とを衝合させて形成したケース、（４）はそのア
ッパーケース（２）とロワーケース（３）とにより外周
部が挟持されて上記ケース（１）内を圧力室（５）と大
気圧室（６）とに区画するダイアフラムで、本実施例で
は上記圧力室（５）を圧力流体導入口（７）を介して図
示しない正圧源に連通させ、また大気圧室（６）はロワ
ーケース（３）に穿設した開口（８）、並びに後に詳述
する開口等を介して大気に連通させている。The present invention will be described below with reference to the illustrated embodiments. In FIG. ) and the lower case (3), the diaphragm divides the inside of the case (1) into a pressure chamber (5) and an atmospheric pressure chamber (6). ) is communicated with a positive pressure source (not shown) via a pressure fluid inlet (7), and the atmospheric pressure chamber (6) is connected to an opening (8) drilled in the lower case (3), as well as openings to be described in detail later. It communicates with the atmosphere through.

上記ダイアフラム（４）の中央部には、その上下両面に
配設した一対のダイアフラムプレート（９）、（ＩＯ）
およびワッシャ（１１）％　（１１）を介して作動ロッ
ド（１２）の一端を連結してあり、この作動ロッド（１
２）の他端は上記開口（８）を遊嵌貫通させて例えばゲ
ートバルブの開閉レバーに連結している。そして上記ロ
ワーケース（３）と下方のダイアフラムプレート（ｌＯ
）との間に圧縮ばね（１３）を弾装して上記作動ロッド
（１２）を上方に附勢し、通常は上方のダイアフラムプ
レート（９）の外周部に形成したストッパＩＩ（１４）
がアッパーケース（２）の内面に当接する位置に保持し
ている。なお、下方のダイアプラムプレート（ｌＯ）の
外周部にも、圧力室（５）に正圧が導入されて作動ロッ
ド（１２）かばね（１３）に抗して作動された際に、ロ
ワーケース（３）の内面に当接してそれ以上の作動ロッ
ド（１２）の下降を阻止するストッパ部（１５）を形成
している。At the center of the diaphragm (4), there are a pair of diaphragm plates (9), (IO) arranged on both the upper and lower sides of the diaphragm (4).
and one end of an actuating rod (12) is connected via a washer (11)% (11).
2) The other end loosely fits through the opening (8) and is connected to, for example, an opening/closing lever of a gate valve. The lower case (3) and the lower diaphragm plate (lO
) is loaded with a compression spring (13) to urge the operating rod (12) upward, and is normally formed on the outer periphery of the upper diaphragm plate (9).
is held in a position where it contacts the inner surface of the upper case (2). In addition, when positive pressure is introduced into the pressure chamber (5) and the operating rod (12) is operated against the spring (13), the lower case ( 3) is formed with a stopper portion (15) that comes into contact with the inner surface of the actuating rod (12) to prevent further descent of the actuating rod (12).

然して本実施例では、上記開口（８）を覆って塵埃の大
気圧室（６）内への進入を防止する２枚の防止部材（１
６Ｌ　（１７）を設けている。各防止部材（１６）、（
１７）はそれぞれ金属、ゴム若しくは合成摺脂、或いは
より好ましくはフェルト等の通気性を有する材料で円板
形に成形されており、その軸部に上記作動ロッド（１２
）を摺動自在に貫通させている。そして一方の防止部材
（１６）の外周部分は、ロワーケース（３）の上記開口
（８）の周囲を大気圧室（６）側に膨出させて形成した
凹陥部（！８）の外表面と、上記ロワーケース（３）に
固定したブラケット（１９）の上面とにより、それらの
表面に沿って防止部材（１６）が滑動し得るように挟持
してあり、また同様に、他方の防止部材（１７）の外局
部分もそのブラケットＣ１９）の下面とプレート（２０
）とにより滑動可能に挟持している。However, in this embodiment, two prevention members (1) are used to cover the opening (8) and prevent dust from entering into the atmospheric pressure chamber (6).
6L (17) is provided. Each prevention member (16), (
Each of the actuating rods (17) is formed into a disc shape from a breathable material such as metal, rubber, synthetic resin, or more preferably felt, and the operating rod (12) is attached to its shaft.
) is slidably penetrated. The outer peripheral portion of one of the prevention members (16) is the outer surface of a concave portion (!8) formed by expanding the periphery of the opening (8) of the lower case (3) toward the atmospheric pressure chamber (6). and the upper surface of the bracket (19) fixed to the lower case (3), the prevention member (16) is held so as to be able to slide along these surfaces, and similarly, the other prevention member (16) The outer part of (17) is also connected to the bottom surface of the bracket C19 and the plate (20).
) is slidably held between the two.

なお、上記ブラケット（１９）およびプレート（２０）
は上記開口（８＞と同一線上に同程度の開口（２１）、
（２２）を有していることは勿論である。また防止部材
（１６）、（１７）が通気性を有する場合にはこれらと
作動ロッド（１２）との嵌合を密にできるが、通気性を
有しないときには、作動ロッド（１２）との間に微小の
間隙を形成してこれを大気通路とすることができる。或
いはまた、必要に応じて、ロワーケース（３）の塵埃を
吸込む虞れの少ない位置に補助通気穴（２３）を穿設し
てもよい。In addition, the above bracket (19) and plate (20)
is an opening (21) of the same extent on the same line as the opening (8>),
Of course, it has (22). In addition, when the prevention members (16) and (17) have air permeability, they can be tightly fitted to the actuating rod (12), but when they do not have air permeability, there is a gap between them and the actuating rod (12). A minute gap can be formed in the air and used as an atmospheric passage. Alternatively, if necessary, an auxiliary ventilation hole (23) may be provided in a position where there is little risk of sucking in dust from the lower case (3).

以上の構成を有するため、圧力室（５）に圧力流体を導
入すればばね（１３）に抗して作動ロッド（１２）を降
下させることができ、その圧力室（５）から圧力流体を
排出させれば上記はね（１３）の弾撓力により作動ロッ
ド（１２）を上昇させることができる。そしてこの際、
作動ロッド（１２）が上記ゲートバルブの開閉レバーを
往復回転作動さ−せることによって揺動したとしても、
その揺動に応じて上記防止部材（ｌｏ）、（１７）がケ
ースに対して滑動するので作動ロッド（１２）の作動が
阻害されることはなく、加えてその作動中、比較的大径
の開口（８）およびこれと同程度の開口（２１）、１２
２）は上記防止部材（１６）、（１７）により通剣性を
保って、又は最小限の間隙を残して閉塞されているので
、従来に比して塵埃が大気圧室【６）内に進入する虞れ
が遥かに小さくなる。With the above configuration, when pressure fluid is introduced into the pressure chamber (5), the actuation rod (12) can be lowered against the spring (13), and the pressure fluid is discharged from the pressure chamber (5). By doing so, the actuating rod (12) can be raised by the elastic force of the spring (13). And at this time,
Even if the operating rod (12) is swung by reciprocating the opening/closing lever of the gate valve,
Since the prevention members (lo) and (17) slide relative to the case in accordance with the rocking, the operation of the actuating rod (12) is not obstructed, and in addition, during its operation, the relatively large diameter Opening (8) and equivalent openings (21), 12
2) is closed by the above-mentioned prevention members (16) and (17) while maintaining the passability or leaving a minimum gap, so dust is less likely to enter the atmospheric pressure chamber [6] than in the past. The risk of intrusion is much smaller.

次に、第２図は本発明の他の実施例を示したもので、本
実施例では第１図に示した実施例から防止部材Ｃ１６）
、（１７）およびプレー）−（２θ）を省略し、その代
わりに作動ロッド（１２）に円板形の防止部材（３０）
を固定し、さらにブラケット（１９）の下面に、その防
止部材（３０）のＲＩＭを取巻く円筒部材Ｃ３１）を取
付けている。その他の構成は第１図と異なるところはな
く、第１図と同一の部分には同一の符号を附して示しで
ある。Next, FIG. 2 shows another embodiment of the present invention, and in this embodiment, the prevention member C16) is different from the embodiment shown in FIG.
, (17) and play)-(2θ) are omitted, and instead a disc-shaped prevention member (30) is attached to the actuation rod (12).
is fixed, and furthermore, a cylindrical member C31) surrounding the RIM of the prevention member (30) is attached to the lower surface of the bracket (19). The rest of the structure is the same as that in FIG. 1, and the same parts as in FIG. 1 are denoted by the same reference numerals.

このような構成においても、塵埃は直接間ａ（８）から
大気圧室（６）内に吸込まれるものではなく、円筒部材
（３１）内に進入し、さらに防止部材（３０）を迂回し
なければならないので、従来に比してその、′１゛ 塵埃の進入を良好に防止することができる。なお、例え
ば第２図の凹陥部（１８）内に第１図の防止部材（１６
）を設ける等により、第１図、第２図に示す各実施例を
組合せてもよく、そのように構成すれば一層良好に塵埃
の進入を防止することができる。Even in this configuration, dust is not directly sucked into the atmospheric pressure chamber (6) from the space a (8), but enters the cylindrical member (31) and further bypasses the prevention member (30). Therefore, the ingress of dust can be better prevented than in the past. For example, the prevention member (16) shown in FIG. 1 may be placed inside the concave portion (18) shown in FIG.
), the embodiments shown in FIGS. 1 and 2 may be combined, and with such a configuration, it is possible to more effectively prevent dust from entering.

第３図は本発明の受に他の実施例で、本実施例では防止
部材としてのベローズ（４０）を大気圧室（６）内に挿
入し、その一端を作動ロッド（１２）に取付けたカラー
Ｃ４１）に連結するとともに、他端をブラケット（１９
）とこれにねじＣ４２）で取付けたプレート（４３）と
で挟持することにより、上記開口（８）を完全に密封し
たものである。そして大気圧室（６）と大気との連通は
ロワーケース１３）に穿設した孔（４４）、および第４
図に示すように、ロワーケース（３）を成形する際にこ
れに一体に形成した環状通路（４５）と半径方向通路Ｃ
４６）とよりなる迷路とを介して行なうようにしている
。Figure 3 shows another embodiment of the receiver of the present invention; in this embodiment, a bellows (40) as a prevention member is inserted into the atmospheric pressure chamber (6), and one end of the bellows (40) is attached to the operating rod (12). Collar C41) and the other end connected to the bracket (19
) and a plate (43) attached thereto with screws C42), thereby completely sealing the opening (8). The atmospheric pressure chamber (6) communicates with the atmosphere through a hole (44) drilled in the lower case 13) and a fourth
As shown in the figure, an annular passage (45) and a radial passage C are formed integrally with the lower case (3) when molding it.
46) and a maze consisting of the following.

このような構成では、作動ロッド（Ｂ）の揺動を許容す
るための大きな開口（８）を完全に密封し、大気圧室（
６）は塵埃の進入し難い小径の孔（４４）と迷路とを介
して大気に連通させているので、やはり前述の実施例と
同様に良好に塵埃の進入を防止することができる。なお
、主起孔Ｃ４４）はベローズ（４０）に設けてもよく、
また第３図においても、第゛−１図と同−若しくは相当
部分に同一の符号を附している。In such a configuration, the large opening (8) for allowing the swing of the actuating rod (B) is completely sealed, and the atmospheric pressure chamber (
6) is communicated with the atmosphere through the labyrinth and the small-diameter hole (44) through which it is difficult for dust to enter, so that it is possible to prevent dust from entering as well as in the previous embodiment. In addition, the main hole C44) may be provided in the bellows (40),
Also in FIG. 3, the same reference numerals are given to the same or corresponding parts as in FIG. 1.

以上のように、本発明は作動ロッドを遊嵌貫通させた開
口部分に、外部から大気圧室に塵埃が進入するのを防止
する防止部材を設けたものであるから、その塵埃の進入
によって生じるダイアフラムの破損を良好に防止するこ
とができるという効果が得られる。As described above, the present invention is provided with a prevention member that prevents dust from entering the atmospheric pressure chamber from the outside in the opening through which the actuating rod is loosely fitted. The effect is that damage to the diaphragm can be effectively prevented.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す縦断面図、第２図、第
３図はそれぞれ本発明の他の実施例を示す縦断面図、第
４図は第３図のＮ−ＩＶ線に沿う横断面図である。 ′（１）・・ケース　　　　（４）・・ダイアフラム（
５）・・圧力室　　　　（６）・・大気圧室（８）、（
２１）、（２２）・・開口　　（１２）・・作動ロッド
（１６）、（１７）、（３０）、（４０）・・防止部材
特許出願人　　大豊工業株式会−社FIG. 1 is a vertical sectional view showing one embodiment of the present invention, FIGS. 2 and 3 are longitudinal sectional views showing other embodiments of the present invention, and FIG. 4 is taken along the line N-IV in FIG. 3. FIG. '(1)...Case (4)...Diaphragm (
5)...Pressure chamber (6)...Atmospheric pressure chamber (8), (
21), (22)...Opening (12)...Operating rod (16), (17), (30), (40)...Prevention member patent applicant Taiho Kogyo Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] （１）　ケースに外周部を決着されてそのケース内を圧
力室と大気圧室とに区画するダイアフラム、上記ケース
に形成されて大気圧室を大気に連通させる開口、この開
口内に遊嵌貫通されて上記ダイアフラムに連結された作
動ロッドを備えるアクチェータにおいて、上記作動Ｏラ
ドを遊嵌貫通させた開口部分に、外部から上記大気圧室
に塵埃が進入するのを防止する防止部材を設けたことを
特徴とするアクチェータ。(1) A diaphragm whose outer periphery is fixed to the case and divides the inside of the case into a pressure chamber and an atmospheric pressure chamber, an opening formed in the case to communicate the atmospheric pressure chamber with the atmosphere, and a diaphragm that is loosely fitted into the opening. In the actuator including an actuation rod connected to the diaphragm, a prevention member for preventing dust from entering the atmospheric pressure chamber from the outside is provided in the opening through which the actuation O rod is loosely fitted. An actuator featuring: （２）防止部材に作動ロッドが摺動自在に嵌合され、か
つその外周部が、上記作動ロッドの揺動に伴なって滑動
可能にケースに支持されていることを特徴とする特許請
求の範囲第１項記載のアクチェータ。(2) An actuating rod is slidably fitted into the prevention member, and an outer peripheral portion of the actuating rod is supported by a case so as to be slidable as the actuating rod swings. Actuator according to scope 1. （３）　防止部材が作動ロッドに固定されて上記開口を
覆うとともに、この防止部材の周囲に、ケースに取付け
られた筒状部材が設けられていることを特徴とする特許
請求の範囲第１項記載のアクチェータ。(3) A prevention member is fixed to the actuating rod and covers the opening, and a cylindrical member attached to the case is provided around the prevention member. Actuator as described. （４）　防止部材がベローズから成り、このベローズの
一端が作動ロッドに、他端がケ：スにそれぞれ取付けら
れて上記開口を閉塞していることを特徴とする特許請求
の範囲第１項記載のアクチェータ。(4) The prevention member comprises a bellows, and one end of the bellows is attached to the operating rod and the other end is attached to the case to close the opening. actuator.
JP20282881A 1981-12-16 1981-12-16 Actuator Granted JPS58106205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20282881A JPS58106205A (en) 1981-12-16 1981-12-16 Actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20282881A JPS58106205A (en) 1981-12-16 1981-12-16 Actuator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP12119683A Division JPS59103007A (en) 1983-07-04 1983-07-04 Actuater

Publications (2)

Publication Number Publication Date
JPS58106205A true JPS58106205A (en) 1983-06-24
JPS6139522B2 JPS6139522B2 (en) 1986-09-04

Family

ID=16463858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20282881A Granted JPS58106205A (en) 1981-12-16 1981-12-16 Actuator

Country Status (1)

Country Link
JP (1) JPS58106205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0191104U (en) * 1987-12-10 1989-06-15
JPH0491504U (en) * 1990-12-21 1992-08-10
WO2012024039A1 (en) * 2010-08-16 2012-02-23 Fisher Controls International Llc Stem guide apparatus for use with fluid valve actuators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107595U (en) * 1975-02-26 1976-08-27
JPS5462468A (en) * 1977-10-18 1979-05-19 Garrett Corp Actuator
JPS5512003U (en) * 1978-07-07 1980-01-25

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107595U (en) * 1975-02-26 1976-08-27
JPS5462468A (en) * 1977-10-18 1979-05-19 Garrett Corp Actuator
JPS5512003U (en) * 1978-07-07 1980-01-25

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0191104U (en) * 1987-12-10 1989-06-15
JPH0491504U (en) * 1990-12-21 1992-08-10
JPH0734723Y2 (en) * 1990-12-21 1995-08-09 株式会社新亀製作所 Pressure air transfer device from tire wheels
WO2012024039A1 (en) * 2010-08-16 2012-02-23 Fisher Controls International Llc Stem guide apparatus for use with fluid valve actuators
US8955537B2 (en) 2010-08-16 2015-02-17 Fisher Controls International, Llc Stem guide apparatus for use with fluid valve actuators
NO340568B1 (en) * 2010-08-16 2017-05-15 Fisher Controls Int Llc Spindle guide device for use with fluid valve actuators

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JPS6139522B2 (en) 1986-09-04

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