JP2005195051A - Valve device - Google Patents

Valve device Download PDF

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JP2005195051A
JP2005195051A JP2003435813A JP2003435813A JP2005195051A JP 2005195051 A JP2005195051 A JP 2005195051A JP 2003435813 A JP2003435813 A JP 2003435813A JP 2003435813 A JP2003435813 A JP 2003435813A JP 2005195051 A JP2005195051 A JP 2005195051A
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valve device
pressing
valve
pressure member
flow path
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JP4305839B2 (en
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Eiji Mihashi
栄治 三橋
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NIIGATA MASONEILAN CO Ltd
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NIIGATA MASONEILAN CO Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve device, of excellent practicability, in which only an axial direction (vertical) load by an elastic element transmitted through a pressure element can be favorably transmitted to a pressure-operated element, and in which a load (force) in a perpendicular direction to the axis (horizontal direction) by the elastic element can be released, so that breakage of the pressure-operated member can be prohibited to improve durability. <P>SOLUTION: In this valve device, a valve element 1 is provided to open/close a passage of fluid for adjusting flow of the fluid. It has an actuation part 2 to actuate the valve element 1. The actuation part 2 comprises a cylinder 3, and the pressure-operated member 4 that slides as actuation fluid is introduced into the cylinder 3. To the pressure-operated member 4, the pressure element 10 to achieve pressure by the elastic element is applied. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、弁装置に関するものである。   The present invention relates to a valve device.

従来、プラント等の流路を通過する流体の流量を調節する弁体が設けられた弁装置は、シリンダー33と、該シリンダー33内の空気室37に導入孔38を通じて空気等の作動流体を導入することで摺動する圧動部材34とから成る作動部32を有し、この圧動部材34の摺動により弁体を作動させ、流路を開閉して流体の流量を調節する構成が一般的であり、この弁装置には、前記空気の押圧力のみでこの圧動部材34を摺動させるタイプと、空気による押圧力及びスプリング等の弾性体35による押圧力を発揮する押圧体40からの押圧力で圧動部材34を摺動させるタイプとがある。   Conventionally, a valve device provided with a valve body that adjusts the flow rate of a fluid passing through a flow path of a plant or the like introduces a working fluid such as air into a cylinder 33 and an air chamber 37 in the cylinder 33 through an introduction hole 38. In general, it has a configuration in which an operating portion 32 including a pressure member 34 that slides is provided, and the valve body is operated by sliding of the pressure member 34 to open and close the flow path to adjust the flow rate of the fluid. The valve device includes a type in which the pressure member 34 is slid only by the air pressing force, and a pressing body 40 that exerts a pressing force by the air and an elastic body 35 such as a spring. There is a type in which the pressure member 34 is slid with the pressing force of.

空気による押圧力及び押圧体40による押圧力で圧動部材34を摺動させるタイプには、図１に図示したように、押圧体40により圧動部材34を常に下方に押圧して弁体により流路を閉塞するように構成し、前記空気室37に空気を導入することで圧動部材34を上方に押圧摺動させて流路を開放するタイプと、図２に図示したように、押圧体40により圧動部材34を常に上方に押圧して流路を開放するように構成し、前記空気室37に空気を導入することで圧動部材34を下方に押圧摺動させて流路を閉塞するタイプとがある。   In the type in which the pressure member 34 is slid by the pressing force by the air and the pressing force by the pressing body 40, the pressing member 40 is always pressed downward by the pressing body 40 as shown in FIG. A type that closes the flow path, introduces air into the air chamber 37, and presses and slides the pressure member 34 upward to open the flow path, as shown in FIG. The body 40 is configured to always press the pressure member 34 upward to open the flow path, and by introducing air into the air chamber 37, the pressure member 34 is pressed and slid downward to form the flow path. There is a type to block.

ところで、この空気による押圧力及び押圧体40による押圧力を利用するタイプは、いずれも押圧体40からの押圧力を良好に圧動部材34に伝達するために、この圧動部材34と押圧体40とはその当接部31が螺合関係等により固定連結されているのが一般的である。   By the way, the type using the pressing force by the air and the pressing force by the pressing body 40 is suitable for transmitting the pressing force from the pressing body 40 to the pressing member 34. In general, the abutting portion 31 is fixedly connected to 40 by a screwing relationship or the like.

しかしながら、この圧動部材34と押圧体40とが固定連結されている場合、弾性体35によって生じる圧動部材34を摺動させるのに必要な縦方向荷重（力）だけでなく、横方向荷重（力）までもが押圧体40から伝達されてしまい、この横方向荷重は圧動部材34とシリンダ33との間に作用するため、この圧動部材34（特にシリンダ33との間に設けられる気密保持用のシール部材36）を損傷し、前記空気室37の気密性が損なわれやすく、また、圧動部材34の良好な摺動が阻害されるという問題が生じ得る。   However, when the pressure member 34 and the pressing body 40 are fixedly connected, not only the longitudinal load (force) necessary to slide the pressure member 34 generated by the elastic body 35 but also the lateral load Even the (force) is transmitted from the pressing body 40, and this lateral load acts between the pressure member 34 and the cylinder 33. Therefore, the force is provided between the pressure member 34 (especially between the cylinder 33). The sealing member 36) for maintaining the airtightness may be damaged, the airtightness of the air chamber 37 may be easily lost, and the problem that the sliding of the pressure member 34 is hindered may occur.

本発明は、上述の問題点を解決したもので、押圧体と圧動部材とを固定連結せず、単に当接せしめることで、押圧体を介して伝達される弾性体による縦方向荷重のみを良好に圧動部材に伝達すると共に、弾性体による横方向荷重を逃がすことができ、圧動部材の破損を阻止して耐久性を向上させることができる極めて実用性に秀れた弁装置を提供するものである。   The present invention solves the above-described problems, and only presses the longitudinal load by the elastic body transmitted through the pressing body by simply bringing the pressing body and the pressure member into contact without being fixedly connected. Providing a valve device with excellent practicality that can transmit to the pressure member well, release the lateral load due to the elastic body, prevent damage to the pressure member and improve durability To do.

添付図面を参照して本発明の要旨を説明する。   The gist of the present invention will be described with reference to the accompanying drawings.

流体が通過する流路を開閉して該流体の流量を調節する弁体１が設けられた弁装置であって、前記弁体１を作動させる作動部２を有し、この作動部２は、シリンダー３と該シリンダー３内に作動流体を導入することで摺動する圧動部材４とから成り、前記圧動部材４には弾性体５により押圧力を発揮する押圧体10が当接せしめられていることを特徴とする弁装置に係るものである。   The valve device is provided with a valve body 1 that opens and closes a flow path through which a fluid passes to adjust the flow rate of the fluid, and includes an operation unit 2 that operates the valve body 1. It comprises a cylinder 3 and a pressure member 4 that slides by introducing a working fluid into the cylinder 3, and a pressing body 10 that exerts a pressing force is brought into contact with the pressure member 4 by an elastic body 5. The present invention relates to a valve device.

また、請求項１記載の弁装置において、圧動部材４と押圧体10とは分離された構成であることを特徴とする弁装置に係るものである。   The valve device according to claim 1, wherein the pressure member 4 and the pressing body 10 are separated from each other.

また、請求項１，２いずれか１項記載の弁装置において、圧動部材４と押圧体10との当接は、該押圧体10の軸方向と直交方向に微動可能な当接であることを特徴とする弁装置に係るものである。   Further, in the valve device according to any one of claims 1 and 2, the contact between the pressure member 4 and the pressing body 10 is a contact that can be finely moved in a direction orthogonal to the axial direction of the pressing body 10. It concerns on the valve apparatus characterized by these.

また、請求項１〜３いずれか１項記載の弁装置において、弁体１により流路が閉塞されている状態において、シリンダー３内に作動流体を導入し、該作動流体圧が弾性体５の弾性力に打ち勝った場合、弁体１により流路が開放されることを特徴とする弁装置に係るものである。   Further, in the valve device according to any one of claims 1 to 3, in a state where the flow path is closed by the valve body 1, the working fluid is introduced into the cylinder 3, and the working fluid pressure is reduced by the elastic body 5. When the elastic force is overcome, the flow path is opened by the valve body 1.

また、請求項１〜３いずれか１項記載の弁装置において、弁体１により流路が開放されている状態において、シリンダー３内に作動流体を導入し、該作動流体圧が弾性体５の弾性力に打ち勝った場合、弁体１により流路が閉塞されることを特徴とする弁装置に係るものである。   Further, in the valve device according to any one of claims 1 to 3, in a state where the flow path is opened by the valve body 1, the working fluid is introduced into the cylinder 3, and the working fluid pressure is reduced by the elastic body 5. When the elastic force is overcome, the flow path is closed by the valve body 1.

また、請求項１〜５いずれか１項記載の弁装置において、弾性体５は、保持体11に初期弾性力を付与された発条12を内装した構成であり、前記押圧体10はこの発条12の弾性力により圧動部材４に押圧力を作用せしめるように構成されていることを特徴とする弁装置に係るものである。   Further, in the valve device according to any one of claims 1 to 5, the elastic body 5 has a configuration in which a strip 12 in which an initial elastic force is applied to a holding body 11 is incorporated, and the pressing body 10 has the strip 12. The valve device is configured to apply a pressing force to the pressure member 4 by the elastic force.

また、請求項６記載の弁装置において、弾性体５は、その配設方向を反転させることで、弁体１により流路が閉塞されている状態において、シリンダー３内に作動流体を導入し、該作動流体圧が弾性体５の弾性力に打ち勝った場合、弁体１により流路が開放される構成、または、弁体１により流路が開放されている状態において、シリンダー３内に作動流体を導入し、該作動流体圧が弾性体５の弾性力に打ち勝った場合、弁体１により流路が閉塞される構成を作出できるものであることを特徴とする弁装置に係るものである。   Further, in the valve device according to claim 6, the elastic body 5 introduces a working fluid into the cylinder 3 in a state where the flow path is closed by the valve body 1 by reversing the arrangement direction thereof. When the working fluid pressure overcomes the elastic force of the elastic body 5, the working fluid is placed in the cylinder 3 in a configuration in which the flow path is opened by the valve body 1 or the flow path is opened by the valve body 1. When the working fluid pressure overcomes the elastic force of the elastic body 5, a configuration in which the flow path is closed by the valve body 1 can be created.

本発明は上述のように構成したから、押圧体を介して伝達される弾性体による軸方向（縦方向）の荷重（力）のみを良好に圧動部材に伝達すると共に、弾性体による軸と直交する方向（横方向）の荷重（力）を逃がすことができ、圧動部材の破損を阻止して耐久性を向上させることができる極めて実用性に秀れた弁装置となる。   Since the present invention is configured as described above, only the load (force) in the axial direction (vertical direction) by the elastic body transmitted through the pressing body is satisfactorily transmitted to the pressure member, and the shaft by the elastic body It is possible to release a load (force) in an orthogonal direction (lateral direction), and it is possible to prevent damage to the pressure member and to improve durability, thereby providing an extremely practical valve device.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。   An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

本発明は、押圧体10からの押圧力は、押圧体10と圧動部材４とを固定連結せずに単に当接させるだけでも良好に圧動部材４に伝達できることを確認して成されたもので、押圧体10に押圧力を発揮させる弾性体５の弾性力の内、圧動部材４の摺動に必要な縦方向荷重は押圧体10から圧動部材４に良好に伝達され、不要な横方向荷重は、圧動部材４に伝達されず、従って、圧動部材４とシリンダ３との間に荷重（力）が作用せず、よって、圧動部材４やシールの破損を防止できる。   The present invention has been made by confirming that the pressing force from the pressing body 10 can be satisfactorily transmitted to the pressing member 4 simply by abutting the pressing body 10 and the pressing member 4 without fixed connection. Of the elastic force of the elastic body 5 that exerts a pressing force on the pressing body 10, the longitudinal load necessary for the sliding of the pressure member 4 is well transmitted from the pressing body 10 to the pressure member 4 and is unnecessary. The lateral load is not transmitted to the pressure member 4, and therefore, no load (force) is applied between the pressure member 4 and the cylinder 3, thereby preventing damage to the pressure member 4 and the seal. .

従って、本発明は、押圧体10を介して伝達される弾性体５による縦方向荷重のみを良好に圧動部材４に伝達すると共に、この弾性体５による横方向荷重を逃がすことができ、圧動部材４等の破損を阻止して耐久性を向上させることができる極めて実用性に秀れる弁装置となる。   Therefore, according to the present invention, only the longitudinal load by the elastic body 5 transmitted through the pressing body 10 can be satisfactorily transmitted to the pressure member 4, and the lateral load by the elastic body 5 can be released. The valve device is excellent in practicality and can improve the durability by preventing breakage of the moving member 4 and the like.

本発明の具体的な実施例について図面に基づいて説明する。   Specific embodiments of the present invention will be described with reference to the drawings.

図３に図示した本実施例は、流体が通過する流路を開閉して該流体の流量を調節する弁体１が設けられた弁装置であって、前記弁体１を作動させる作動部２を有し、この作動部２は、シリンダー３と該シリンダー３内に作動流体を導入することで摺動する圧動部材４とから成り、前記圧動部材４には弾性体５により押圧力を発揮する押圧体10が当接せしめられているものである。   The embodiment shown in FIG. 3 is a valve device provided with a valve body 1 that opens and closes a flow path through which a fluid passes and adjusts the flow rate of the fluid, and an operating section 2 that operates the valve body 1. The operating portion 2 includes a cylinder 3 and a pressure member 4 that slides by introducing a working fluid into the cylinder 3. The elastic member 5 applies a pressing force to the pressure member 4. The pressing body 10 to be exhibited is brought into contact with the pressing body 10.

各部を具体的に説明する。   Each part will be specifically described.

弁体１には弁杆24が連設され、この弁杆24の端部には圧動部材４である平面視円形状のピストン４（ピストンプレート）の中心部に形成された雌ネジ部４ａと螺合する雄ネジ部24ａが設けられ、該雄ネジ部24ａを前記雌ネジ部４ａに螺合せしめることでこの弁体１は圧動部材４に連結される。   A valve rod 24 is connected to the valve body 1, and a female screw portion 4 a formed at the center of a piston 4 (piston plate) having a circular shape in plan view as a pressure member 4 at an end of the valve rod 24. The valve body 1 is connected to the pressure member 4 by screwing the male screw portion 24a with the female screw portion 4a.

圧動部材４は、ケース８の内周壁に設けられるシリンダー３（シリンダーチューブ）内を摺動するように構成され、圧動部材４により仕切られたケース８内の下側空間は空気室６に設定されている。   The pressure member 4 is configured to slide in a cylinder 3 (cylinder tube) provided on the inner peripheral wall of the case 8, and a lower space in the case 8 partitioned by the pressure member 4 is formed in the air chamber 6. Is set.

また、このシリンダー３には空気導入孔７が設けられ、該空気導入孔７から空気室６に空気が導入されると、前記圧動部材４の一面（下面）が押圧される。   The cylinder 3 is provided with an air introduction hole 7. When air is introduced into the air chamber 6 from the air introduction hole 7, one surface (lower surface) of the pressure member 4 is pressed.

具体的には、シリンダー３は、ケース８の下部に止めネジ23によって固着される下蓋８ａと、ケース８の下部寄りに固着されるセパレータプレート21と、ケース８の周面に設けられる摺動板25とで構成され、ケース８内にして該セパレータプレート21の上方は、このシリンダー３と弾性体５を配設する空間部に設定されている。尚、空気導入孔７はケース８に設けられている。   Specifically, the cylinder 3 includes a lower lid 8 a fixed to the lower portion of the case 8 by a set screw 23, a separator plate 21 fixed to the lower portion of the case 8, and a slide provided on the peripheral surface of the case 8. The upper part of the separator plate 21 in the case 8 is set as a space in which the cylinder 3 and the elastic body 5 are arranged. The air introduction hole 7 is provided in the case 8.

図中符号８ｂは、ケース体８に止めネジ23により固着される上蓋、26はケース８に垂設されたカバーである。   In the figure, reference numeral 8 b denotes an upper lid fixed to the case body 8 with a set screw 23, and 26 denotes a cover suspended from the case 8.

圧動部材４の空気室６内の空気により押圧される一面の反対側の他面（上面）には、該空気による押圧力とは反対向きの押圧力を、弾性体５により作用させる押圧体10が当接せしめられている。この圧動部材４と押圧体10とは一体ではなく、分離された構成で、この押圧体10は、該押圧体10の軸方向と直交方向に微動可能な状態で圧動部材４に当接している。   On the other surface (upper surface) opposite to the one surface pressed by the air in the air chamber 6 of the pressure member 4, a pressing body in which a pressing force opposite to the pressing force by the air is applied by the elastic body 5. 10 is abutted. The pressure member 4 and the pressing body 10 are not integrated but separated from each other, and the pressing body 10 abuts on the pressure member 4 in a state where it can be slightly moved in the direction orthogonal to the axial direction of the pressing body 10. ing.

この弾性体５は、平面視円形状の保持体11に初期弾性力が付与された発条12（スプリング）を内装した構成で、この発条12の弾性力により押圧体10が圧動部材４に押圧力を付与する。   The elastic body 5 has a configuration in which a spring 12 having an initial elastic force is provided in a holding body 11 having a circular shape in plan view, and the pressing body 10 is pressed against the pressure member 4 by the elastic force of the spring 12. Apply pressure.

具体的には、この保持体11は、上側保持体14と下側保持体15とから成り、この上側保持体14と下側保持体15とで前記発条12を挾持する構成である。   Specifically, the holding body 11 includes an upper holding body 14 and a lower holding body 15, and the upper holding body 14 and the lower holding body 15 sandwich the ridge 12.

押圧体10は、前記上側保持体14に係止される径大部16ａが設けられた上部材16と、下側保持体15に係止される径大部17ａが設けられた下部材17とから成り、該上部材16と下部材17とは螺合せしめられている。   The pressing body 10 includes an upper member 16 provided with a large-diameter portion 16a locked to the upper holding body 14, and a lower member 17 provided with a large-diameter portion 17a locked to the lower holding body 15. The upper member 16 and the lower member 17 are screwed together.

また、前記上側保持体14と下側保持体15には、中央部に前記上部材16と下部材17の径小部16ｂ，17ｂが挿通し且つ径大部16ａ，17ａが挿通しない大きさに設定された挿通孔14ａ，15ａが夫々形成され、この上側保持体14の前記挿通孔14ａの上部開口周縁部に前記上部材16の径大部16ａの下面が係止し、下側保持体15の前記挿通孔15ａの下部開口周縁部に前記下部材17の径大部17ａの上面がスラストベアリング19を介して係止するように構成されている。   Further, the upper holding body 14 and the lower holding body 15 have such a size that the small diameter portions 16b and 17b of the upper member 16 and the lower member 17 are inserted into the central portion and the large diameter portions 16a and 17a are not inserted. The set insertion holes 14a and 15a are respectively formed, and the lower surface of the large-diameter portion 16a of the upper member 16 is engaged with the upper opening peripheral edge of the insertion hole 14a of the upper holding body 14, and the lower holding body 15 The upper surface of the large-diameter portion 17a of the lower member 17 is configured to be locked via a thrust bearing 19 at the lower opening peripheral edge of the insertion hole 15a.

また、前記セパレータプレート21の中央部にも前記挿通孔14ａ，15ａと同様の挿通孔21ａが設けられている。   Further, an insertion hole 21a similar to the insertion holes 14a and 15a is also provided in the central portion of the separator plate 21.

従って、前記発条12を挾持した前記保持体11をセパレータプレート21の上方の空間部に配設し、上側保持体14及び下側保持体15の挿通孔14ａ，15ａに上部材16を夫々挿通し、該上部材16と下部材17とを螺合すると、発条12の弾性力はスラストベアリング19を介して下部材17の径大部17ａに作用し、よって、下部材17には軸方向下向きの押圧力が作用する。   Accordingly, the holding body 11 holding the ridge 12 is disposed in the space above the separator plate 21, and the upper member 16 is inserted into the insertion holes 14a and 15a of the upper holding body 14 and the lower holding body 15, respectively. When the upper member 16 and the lower member 17 are screwed together, the elastic force of the ridge 12 acts on the large-diameter portion 17a of the lower member 17 via the thrust bearing 19, so that the lower member 17 has a downward axial direction. A pressing force acts.

また、上側保持体14の外面は、前記ケース８の内周面と当接係止するように構成され、この上側保持体14の前記挿通孔14ａにはガイドブッシング20が設けられ、この挿通孔14ａを挿通する押圧体10の上部材16の径小部16ｂがこの挿通孔14ａ内を良好に摺動するように構成されている。   Further, the outer surface of the upper holding body 14 is configured to abut and lock with the inner peripheral surface of the case 8, and a guide bushing 20 is provided in the insertion hole 14 a of the upper holding body 14. The small-diameter portion 16b of the upper member 16 of the pressing body 10 that is inserted through 14a is configured to slide well in the insertion hole 14a.

また、前記セパレータプレート21の外面も上述の上側保持体14と同様に、前記ケース８の内周面と当接係止するように構成され、このセパレータプレート21の挿通孔21ａにも前記ガイドブッシング20が設けられ、この挿通孔21ａを挿通する押圧体10の下部材17の径小部17ｂがこの挿通孔21ａ内を良好に摺動するように構成されている。尚、ガイドブッシング20としては、従来用いられていた銅合金に比し摺動性に秀れたＰＴＦＥ（ｐｏｌｙｔｅｔｒａｆｌｕｏｒｏｅｔｈｙｌｅｎｅ）から成るものが採用されている。これにより従来の銅合金から成るガイドブッシングに比しコンパクト化を実現できる。   Further, the outer surface of the separator plate 21 is also configured to abut and engage with the inner peripheral surface of the case 8 in the same manner as the upper holding body 14 described above. The guide bushing is also inserted into the insertion hole 21a of the separator plate 21. 20 is provided, and the small diameter portion 17b of the lower member 17 of the pressing body 10 that is inserted through the insertion hole 21a is configured to slide well in the insertion hole 21a. The guide bushing 20 is made of PTFE (polytetrafluoroethylene), which is superior in slidability as compared to a conventionally used copper alloy. As a result, it is possible to realize a more compact size than a conventional guide bushing made of a copper alloy.

従って、前記弾性体５の発条12により押圧体10に作用せしめられる横方向荷重は、前記押圧体10が圧動部材４と分離されており、更に、この押圧体10が圧動部材４と該押圧体10の軸方向と直交方向に微動可能な状態で当接するように構成されているから、従来のように圧動部材４とシリンダ３との間に作用（集中）することがない。   Accordingly, the lateral load applied to the pressing body 10 by the ridges 12 of the elastic body 5 is such that the pressing body 10 is separated from the pressure member 4, and the pressure body 10 is further separated from the pressure member 4. Since it is configured to abut in a state where it can be finely moved in the direction orthogonal to the axial direction of the pressing body 10, it does not act (concentrate) between the pressure member 4 and the cylinder 3 as in the prior art.

即ち、圧動部材４と摺動板25との間のＯリング22が破損しにくくなり、空気室６の気密性を良好に保つことができると共に、圧動部材４の摺動性が劣悪とならない。   That is, the O-ring 22 between the pressure member 4 and the sliding plate 25 is less likely to be damaged, the airtightness of the air chamber 6 can be kept good, and the slidability of the pressure member 4 is poor. Don't be.

図３は、空気室６に空気が導入されておらず、押圧体10によってのみ圧動部材４が押圧されて弁体１も下方に押圧され、流路を閉塞している状態である。   FIG. 3 shows a state in which no air is introduced into the air chamber 6, the pressure member 4 is pressed only by the pressing body 10, the valve body 1 is also pressed downward, and the flow path is closed.

この図３の状態において、空気導入孔７から空気室６に空気を導入していくと、この空気による押圧力が前記押圧体10に押圧力を付与する弾性体の付勢力（弾性力）に打ち勝って圧動部材４は上方に押圧され、この圧動部材４と連結される弁体１が上方に移動して閉塞していた流路が開放される。   In the state of FIG. 3, when air is introduced into the air chamber 6 from the air introduction hole 7, the pressing force by the air becomes the urging force (elastic force) of the elastic body that applies the pressing force to the pressing body 10. The pressure member 4 is overcome and pressed upward, and the valve body 1 connected to the pressure member 4 moves upward to open the closed channel.

以上のように、本実施例は、押圧体10により前記弁体１を常に下方に押圧して流路を閉塞し、空気による押圧力を前記押圧体10による押圧力より大きくすることで該流路を開放する構成（所謂Ａｉｒ ｔｏ ｏｐｅｎ）であるが、図４に図示したように押圧体10により弁体１を常に上方に押圧して流路を開放し、空気による押圧力を前記押圧体10による押圧力より大きくすることで該流路を閉塞する構成（所謂Ａｉｒ ｔｏ ｃｌｏｓｅ）としても良い。尚、図４は空気室６に空気を導入して流路を閉塞した状態を図示している。   As described above, in this embodiment, the valve body 1 is always pressed downward by the pressing body 10 to close the flow path, and the pressing force by the air is made larger than the pressing force by the pressing body 10. Although the configuration is such that the path is opened (so-called Air to open), as shown in FIG. 4, the valve body 1 is always pressed upward by the pressing body 10 to open the flow path, and the pressing force by air is applied to the pressing body. A configuration (so-called air to close) may be adopted in which the flow path is closed by increasing the pressing force by 10. FIG. 4 illustrates a state in which air is introduced into the air chamber 6 to close the flow path.

この場合、単に本実施例のケース８を内部構造ごと上下反転させて押圧体10の上部材16の径大部16ａと、弁杆24の基端径大部27とを連結するだけでＡｉｒ ｔｏ ｃｌｏｓｅの構成を実現でき、殆どの部品を流用することができる。   In this case, the case 8 of this embodiment is simply turned upside down along with the internal structure, and the large diameter portion 16a of the upper member 16 of the pressing body 10 and the large proximal end portion 27 of the valve rod 24 are simply connected to the Air to A close configuration can be realized, and almost all parts can be used.

本実施例は上述のように構成したから、押圧体10に押圧力を発揮させる弾性体５の弾性力の内、圧動部材４の摺動に必要な縦方向荷重は押圧体10から圧動部材４に良好に伝達され、不要な横方向荷重は圧動部材４に伝達されず、従って、圧動部材４とシリンダ３との間に荷重（力）が作用せず、よって、圧動部材４やＯリング22の破損を防止できる。   Since the present embodiment is configured as described above, the longitudinal load necessary for the sliding of the pressure member 4 out of the elastic force of the elastic body 5 that causes the pressing body 10 to exert a pressing force is compressed from the pressing body 10. The unnecessary lateral load is not transmitted to the pressure member 4 because it is well transmitted to the member 4, and therefore no load (force) acts between the pressure member 4 and the cylinder 3. 4 and O-ring 22 can be prevented from being damaged.

しかも、弾性体５は、保持体11に初期弾性力を付与された発条12を内装した構成であるから、予め初期弾性力を付与せしめることができ、スプリングを現場で組み込む必要がなく、組み込みの際に必要だったスペースをなくしてコンパクト化を実現できる。   In addition, since the elastic body 5 has a structure in which the ridges 12 to which the initial elastic force is applied to the holding body 11 are built in, the initial elastic force can be applied in advance, and it is not necessary to incorporate the spring at the site. It is possible to achieve compactness by eliminating the space required.

また、部品をＡｉｒ ｔｏ ｏｐｅｎの構成及びＡｉｒ ｔｏ ｃｌｏｓｅの構成いずれの構成にも流用することが可能となり、極めて生産性及びコスト性に秀れたものとなる。   In addition, the parts can be used for both the Air to open configuration and the Air to close configuration, which is extremely excellent in productivity and cost.

従って、本実施例は、押圧体を介して伝達される弾性体による軸方向（縦方向）の荷重（力）のみを良好に圧動部材に伝達すると共に、弾性体による軸と直交する方向（横方向）の荷重（力）を逃がすことができ、圧動部材の破損を阻止して耐久性を向上させることができる極めて実用性に秀れた弁装置となる。   Accordingly, in this embodiment, only the load (force) in the axial direction (longitudinal direction) transmitted by the elastic body via the pressing body is satisfactorily transmitted to the pressure member, and the direction orthogonal to the axis by the elastic body ( It is possible to release a load (force) in the lateral direction, and it is possible to prevent damage to the pressure member and to improve durability, thereby providing a highly practical valve device.

従来例の概略説明断面図である。It is a schematic explanatory sectional view of a conventional example. 従来例の概略説明断面図である。It is a schematic explanatory sectional view of a conventional example. 本実施例の概略説明断面図である。It is a schematic explanatory sectional drawing of a present Example. 別例の概略説明断面図である。It is outline explanatory sectional drawing of another example.

符号の説明Explanation of symbols

１ 弁体
２ 作動部
３ シリンダー
４ 圧動部材
５ 弾性体
10 押圧体
11 保持体
12 発条 DESCRIPTION OF SYMBOLS 1 Valve body 2 Actuating part 3 Cylinder 4 Pressure member 5 Elastic body
10 Pressing body
11 Holder
12

Claims (7)

流体が通過する流路を開閉して該流体の流量を調節する弁体が設けられた弁装置であって、前記弁体を作動させる作動部を有し、この作動部は、シリンダーと該シリンダー内に作動流体を導入することで摺動する圧動部材とから成り、前記圧動部材には弾性体により押圧力を発揮する押圧体が当接せしめられていることを特徴とする弁装置。   A valve device provided with a valve body that opens and closes a flow path through which a fluid passes to adjust a flow rate of the fluid, and has an operation section that operates the valve body, and the operation section includes a cylinder and the cylinder A valve device comprising: a pressure member that slides by introducing a working fluid therein, and a pressing body that exerts a pressing force by an elastic body on the pressure member. 請求項１記載の弁装置において、圧動部材と押圧体とは分離された構成であることを特徴とする弁装置。   The valve device according to claim 1, wherein the pressure member and the pressing body are separated from each other. 請求項１，２いずれか１項記載の弁装置において、圧動部材と押圧体との当接は、該押圧体の軸方向と直交方向に微動可能な当接であることを特徴とする弁装置。   The valve device according to any one of claims 1 and 2, wherein the contact between the pressure member and the pressing body is a contact that can be finely moved in a direction orthogonal to the axial direction of the pressing body. apparatus. 請求項１〜３いずれか１項記載の弁装置において、弁体により流路が閉塞されている状態において、シリンダー内に作動流体を導入し、該作動流体圧が弾性体の弾性力に打ち勝った場合、弁体により流路が開放されることを特徴とする弁装置。   The valve device according to any one of claims 1 to 3, wherein the working fluid is introduced into the cylinder in a state where the flow path is closed by the valve body, and the working fluid pressure overcomes the elastic force of the elastic body. In this case, the flow path is opened by the valve body. 請求項１〜３いずれか１項記載の弁装置において、弁体により流路が開放されている状態において、シリンダー内に作動流体を導入し、該作動流体圧が弾性体の弾性力に打ち勝った場合、弁体により流路が閉塞されることを特徴とする弁装置。   The valve device according to any one of claims 1 to 3, wherein the working fluid is introduced into the cylinder in a state where the flow path is opened by the valve body, and the working fluid pressure overcomes the elastic force of the elastic body. In this case, the valve device is characterized in that the flow path is closed by the valve body. 請求項１〜５いずれか１項記載の弁装置において、弾性体は、保持体に初期弾性力を付与された発条を内装した構成であり、前記押圧体はこの発条の弾性力により圧動部材に押圧力を作用せしめるように構成されていることを特徴とする弁装置。   The valve device according to any one of claims 1 to 5, wherein the elastic body has a structure in which a spring having an initial elastic force applied to the holding body is provided, and the pressing body is a pressure member by the elastic force of the spring. A valve device characterized in that a pressing force is applied to the valve device. 請求項６記載の弁装置において、弾性体は、その配設方向を反転させることで、弁体により流路が閉塞されている状態において、シリンダー内に作動流体を導入し、該作動流体圧が弾性体の弾性力に打ち勝った場合、弁体により流路が開放される構成、または、弁体により流路が開放されている状態において、シリンダー内に作動流体を導入し、該作動流体圧が弾性体の弾性力に打ち勝った場合、弁体により流路が閉塞される構成を作出できるものであることを特徴とする弁装置。
7. The valve device according to claim 6, wherein the elastic body reverses its arrangement direction to introduce the working fluid into the cylinder in a state where the flow path is closed by the valve body, and the working fluid pressure is reduced. When the elastic force of the elastic body is overcome, the working fluid is introduced into the cylinder in a configuration in which the flow path is opened by the valve body or the flow path is opened by the valve body, and the working fluid pressure is A valve device characterized in that when the elastic force of the elastic body is overcome, a configuration in which the flow path is closed by the valve body can be created.
JP2003435813A 2003-12-26 2003-12-26 Valve device Expired - Lifetime JP4305839B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008164009A (en) * 2006-12-27 2008-07-17 Hisaka Works Ltd Pneumatic actuating mechanism and pneumatic actuating valve
JP2010216658A (en) * 2010-06-02 2010-09-30 Hisaka Works Ltd Pneumatic type operating mechanism, and pneumatic type operation valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008164009A (en) * 2006-12-27 2008-07-17 Hisaka Works Ltd Pneumatic actuating mechanism and pneumatic actuating valve
JP2010216658A (en) * 2010-06-02 2010-09-30 Hisaka Works Ltd Pneumatic type operating mechanism, and pneumatic type operation valve

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