JP4526842B2 - Valve drive unit with manual operation mechanism - Google Patents

Valve drive unit with manual operation mechanism Download PDF

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JP4526842B2
JP4526842B2 JP2004068548A JP2004068548A JP4526842B2 JP 4526842 B2 JP4526842 B2 JP 4526842B2 JP 2004068548 A JP2004068548 A JP 2004068548A JP 2004068548 A JP2004068548 A JP 2004068548A JP 4526842 B2 JP4526842 B2 JP 4526842B2
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manual operation
shaft
handle
manual
hole
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JP2005256936A (en
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泰夫 薬袋
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Kitz Corp
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Description

本発明は手動操作機構付きバルブ用駆動装置に関し、特に、弁体の開閉操作を手動で行う場合に、軽い操作力で円滑に行い得る手動操作機構付きバルブ用駆動装置に関する。 The present invention relates to a manually operated mechanism valved drive device, in particular, when the opening and closing operation of the valve body manually, smoothly relates manual operating mechanism with valve driving apparatus capable of performing a light operation force.

ボールバルブやバタフライバルブには、電動や空油圧等のアクチュエータを接続して、弁体であるボールやジスクを自動的に回転させて流路の開閉又は流量制御を行う、いわゆる自動弁が普及しており、電動アクチュエータの場合、モータの回転力は歯車減速機構を介して大きな駆動力に変換した上で、弁体に接続された弁棒に伝達するようにしている。このアクチュエータには、停電時やメンテナンス時に手動によって弁体の開閉操作を行えるように手動操作機構を設けている(例えば、特許文献1又は2参照。)。   For ball valves and butterfly valves, so-called automatic valves are widely used, which are connected to actuators such as electric or pneumatic hydraulics to automatically rotate the ball or disk, which is the valve body, to open / close the flow path or control the flow rate. In the case of an electric actuator, the rotational force of the motor is converted into a large driving force via a gear reduction mechanism and then transmitted to a valve rod connected to the valve element. The actuator is provided with a manual operation mechanism so that the valve body can be manually opened and closed during a power failure or maintenance (see, for example, Patent Document 1 or 2).

例えば、特許第2787402号公報(特許文献1)に記載の弁駆動用アクチュエータは、電動操作時には、モータの駆動力が減速歯車列を介してクラッチギヤに伝達され、さらにウォーム軸及びウォーム歯車を介して弁棒を回転することにより、弁体を自動で開閉操作する一方、手動操作時には、クラッチギヤを上記減速歯車列から切り離した上で、ハンドルの操作力をクラッチギヤに伝達し、ウォーム軸及びウォーム歯車を介して弁棒を回転することにより、弁体を手動で開閉操作するようにしている。   For example, in the valve drive actuator described in Japanese Patent No. 2787402 (Patent Document 1), during electric operation, the driving force of the motor is transmitted to the clutch gear via the reduction gear train, and further via the worm shaft and worm gear. By rotating the valve stem, the valve body is automatically opened and closed.At the time of manual operation, the clutch gear is disconnected from the reduction gear train, and the operating force of the handle is transmitted to the clutch gear. The valve element is manually opened and closed by rotating the valve stem via the worm gear.

また、実開平6−59677号公報(特許文献2)に記載の電動バルブは、電動操作時にはモータの駆動力が減速機を介してウォーム及びウォームホイールに伝達されて弁駆動軸を回転することにより、ボール弁体を自動で開閉作動する一方、手動操作時にはウォームの軸の先端部に手動ハンドルや六角レンチを取り付け、手動ハンドル等の操作力をウォーム及びウォームホイールを介して弁棒を回転することにより、ボール弁体を手動で開閉操作するようにしている。手動操作が必要な際に手動ハンドル等を装着する構造なので、電動操作時はアクチュエータの外方に手動ハンドルが突出することなく、コンパクトなアクチュエータが得られる。
特許第2787402号公報 実開平6−59677号公報
Further, in the electric valve described in Japanese Utility Model Publication No. 6-59677 (Patent Document 2), during the electric operation, the driving force of the motor is transmitted to the worm and the worm wheel via the speed reducer to rotate the valve driving shaft. The ball valve body automatically opens and closes, and at the time of manual operation, a manual handle or hexagon wrench is attached to the tip of the worm shaft, and the operating force of the manual handle is rotated through the worm and worm wheel. Thus, the ball valve body is manually opened and closed. Since the structure is such that a manual handle or the like is attached when manual operation is required, a compact actuator can be obtained without the manual handle protruding outward from the actuator during electric operation.
Japanese Patent No. 2787402 Japanese Utility Model Publication No. 6-59677

しかしながら、上記いずれのアクチュエータも、ウォームギヤ等の減速機構を介して弁体を操作するようにしており、減速機構の摩擦抵抗によって弁体を中間開度にて保持することができるが、この摩擦抵抗力は弁体を流体圧に抗して中間開度で保持するために高いものとなっていることから、手動操作時にもこの摩擦抵抗力に抗してバルブを操作しなければならず、手動操作力が大きいものとなっていた。   However, in any of the above actuators, the valve body is operated via a speed reduction mechanism such as a worm gear, and the valve body can be held at an intermediate opening degree by the friction resistance of the speed reduction mechanism. Since the force is high to hold the valve body against the fluid pressure at an intermediate opening, the valve must be operated against this frictional resistance even during manual operation. The operating force was great.

手動操作力を大きくするために、アクチュエータに付設する手動操作ハンドルの径を大きくしてもよいが、この場合、手動操作ハンドルがアクチュエータの外方に大きく突出してしまう。一方、手動操作の都度、手動操作ハンドルをアクチュエータに取り付けるようにしてもよいが、手動操作ハンドルの形状は各メーカによって異なっており、紛失した場合にはアクチュエータの手動操作が困難になるおそれがある。   In order to increase the manual operation force, the diameter of the manual operation handle attached to the actuator may be increased. However, in this case, the manual operation handle protrudes outward from the actuator. On the other hand, the manual operation handle may be attached to the actuator each time manual operation is performed, but the shape of the manual operation handle differs depending on the manufacturer, and if it is lost, manual operation of the actuator may be difficult. .

本発明は、上記の課題点に鑑み、鋭意研究の結果開発に至ったものであり、その目的とするところは、停電時やメンテナンス時などにおいて、弁体の手動操作を軽い操作力で円滑に行い得ることができ、手動操作ハンドルを付設した場合であっても、装置全体をコンパクト化することができる操作性に優れた手動操作機構付きバルブ用駆動装置と手動操作ハンドルを提供することにある。   The present invention has been developed as a result of diligent research in view of the above-mentioned problems, and the purpose of the present invention is to smoothly perform manual operation of the valve body with a light operating force during a power failure or maintenance. The present invention is to provide a valve operating device with a manual operation mechanism and a manual operation handle that are excellent in operability and can be made compact even when a manual operation handle is attached. .

上記の目的を達成するため、請求項1に係る発明は、電動モータ、減速機構や手動操作軸等の内部構成部品をカバー本体に内蔵したバルブ用駆動装置であって、前記手動操作軸をカバー本体の上部に突出させ、この突出部位に手動用の円形状ハンドル本体を軸着し、このハンドル本体の軸着位置より偏芯した位置に、前記手動操作軸の軸芯に対して平行に上面から下方へ向けて六角孔を形成し、この六角孔にL形の六角レンチを着脱させ、前記六角孔に装着した六角レンチを回転させてハンドル本体を手動操作可能とした手動操作機構付きバルブ用駆動装置である。 In order to achieve the above object, an invention according to claim 1 is a valve drive device in which internal components such as an electric motor, a speed reduction mechanism, and a manual operation shaft are built in a cover body, and covers the manual operation shaft . Projected to the upper part of the main body, a circular handle main body for manual operation is pivotally attached to the projecting portion , and the upper surface is parallel to the axis of the manual operation shaft at a position eccentric from the axial attachment position of the handle main body. For valves with a manual operation mechanism that forms a hexagonal hole from the bottom, attaches and detaches an L-shaped hexagon wrench to the hexagonal hole, and rotates the hexagon wrench attached to the hexagonal hole to enable manual operation of the handle body. It is a drive device.

請求項2に係る発明は、前記ハンドル本体の軸着部位には、手動操作軸の頂部に形成した切欠面部(例えば、二面部)を嵌合する係合孔を形成し、この係合孔に前記切欠面部を部分的に係合させる係合突部を形成した手動操作機構付きバルブ用駆動装置である。 According to a second aspect of the present invention, an engagement hole for fitting a notch surface portion (for example, two surface portions) formed on the top portion of the manual operation shaft is formed in the shaft attachment portion of the handle body. It is a valve drive device with a manual operation mechanism in which an engagement protrusion for partially engaging the notch surface portion is formed.

請求項1に係る発明によると、停電時やメンテナンス時などの電力供給停止時において、手動操作トルクが重い場合、ハンドル本体の軸着位置より偏芯した位置に六角孔を設け、この六角孔六角レンチを着脱させ、この六角レンチでハンドル本体を回転操作することで、軽い操作力で、かつ、限られたスペース内でも弁体の開閉操作を容易に行うことができる手動操作機構付きバルブ用駆動装置を提供することが可能となる。さらに、手動操作ハンドルのみで操作する場合に比して、軽い操作力で手動操作を行うことができると共に、六角レンチを、六角孔に対して角度を変えて適宜の状態で装着することができるので、狭いスペースや暗い場所などのように操作し難い環境条件下においても容易に手動作業を行うことができるAccording to the invention of claim 1, at the time of stoppage of power supply, such as during power failure or maintenance, if manual operation torque is heavy, the hexagonal hole provided at a position eccentric from the shaft fixing position of the handle body, to the hexagonal hole For valves with a manual operation mechanism that can be easily opened and closed even in a limited space by attaching and removing a hexagon wrench and rotating the handle body with this hexagon wrench . A drive device can be provided. Furthermore, compared with the case of operating with only the manual operation handle , the manual operation can be performed with a light operation force, and the hexagon wrench can be mounted in an appropriate state by changing the angle with respect to the hexagon hole. Therefore, the manual operation can be easily performed even under an environmental condition that is difficult to operate such as a narrow space or a dark place .

請求項2に係る発明によると、手動操作時に所定の回転トルク以上に過剰なトルクが発生した場合、手動操作軸の切欠面部によって、ハンドル本体の係合孔に形成した係合突部を破断させる構造とすることで、手動操作時の過剰なトルクが駆動装置の内部構成部品に伝達されることを防ぎ、これら部品を確実に保護することが可能となる。さらに、破損したハンドルを交換するのみで修理が完了するので、作業性、経済性にも優れた手動操作機構付きバルブ用駆動装置を提供することが可能となる。   According to the second aspect of the present invention, when an excessive torque exceeding a predetermined rotational torque is generated during the manual operation, the engagement protrusion formed in the engagement hole of the handle body is broken by the notch surface portion of the manual operation shaft. By adopting a structure, it is possible to prevent excessive torque during manual operation from being transmitted to the internal components of the drive device, and to reliably protect these components. Furthermore, since the repair is completed only by replacing the damaged handle, it is possible to provide a valve drive device with a manual operation mechanism that is excellent in workability and economy.

更に、着脱孔は、孔径の異なる六角孔で、この六角孔に対応する六角レンチを用いることにより、さらに作業性を向上させ、汎用性に優れた手動操作ハンドルを提供することが可能となり、特に、一般の各種の六角レンチを選択して、六角孔に装着できるため、作業性はもとより経済性にも優れたバルブの手動操作ハンドルを得ることができる。 Furthermore , the attachment / detachment hole is a hexagonal hole with a different hole diameter. By using a hexagonal wrench corresponding to this hexagonal hole, it becomes possible to further improve the workability and provide a versatile manual operation handle. Since various general hexagonal wrench can be selected and installed in the hexagonal hole, it is possible to obtain a valve manual operation handle that is excellent in workability and economical efficiency.

本発明における手動操作機構付きバルブ用駆動装置とバルブの手動操作ハンドルの実施形態を図面に基づいて説明する。
本発明は、電動モータ、減速機構や手動操作軸の内部構成部品をカバー本体に内蔵したバルブ用駆動装置であって、前記手動操作軸の上端部(本例では、突出部位)に手動用のハンドル本体を固着し、このハンドル本体の固着位置より偏芯した位置に着脱部を設け、この着脱部に操作部材を着脱させ、この操作部材でハンドル本体を手動操作可能としており、停電時やメンテナンス時などの電力供給停止時であって、手動操作トルクが重い場合には、前記操作部材でハンドル本体を手動操作することで、弁体の開閉操作を簡単に行い得ることを特徴としている。以下に、一例として内接噛合遊星歯車減速機構を内蔵したバルブ用駆動装置に適用して説明する。
An embodiment of a valve drive device with a manual operation mechanism and a manual operation handle of a valve according to the present invention will be described based on the drawings.
The present invention is a valve drive device in which internal components of an electric motor, a speed reduction mechanism, and a manual operation shaft are built in a cover body, and a manual drive shaft is provided on an upper end portion (a protruding portion in this example) of the manual operation shaft. The handle body is fixed, and an attaching / detaching portion is provided at a position eccentric from the fixing position of the handle body, and an operating member is attached to and detached from the attaching / detaching portion so that the handle body can be manually operated. When the power supply is stopped, such as when the manual operation torque is heavy, the valve body can be easily opened and closed by manually operating the handle body with the operation member. In the following, description will be made by applying the present invention to a valve drive device incorporating an intermeshing planetary gear reduction mechanism as an example.

図1は、本発明の手動操作機構付きバルブ用駆動装置の一例を示した断面図であり、図2は、図1における一部省略平面図である。図1及び図2に示すように、本例における手動操作機構付きバルブ用駆動装置1(以下、本装置1という)は、カバー本体2と、該カバー本体2内に配設された電動モータ3と、該電動モータ3の回転軸に設けたピニオンギヤ4と噛合する中間歯車5と、該中間歯車5と噛合する歯車であって、出力軸と同軸上に配設された入力歯車6と、前記電動モータ3からの回転力を中間歯車5、入力歯車6を介して伝達される内接噛合遊星歯車減速機構7と、該歯車減速機構7を介して減速された回転力により回転する出力軸8と、該出力軸8の上部に延設した制御軸9に設けたカム部材10と、該カム部材10によりオン・オフ操作される弁開度検出部材11、及び手動操作機構12とからなり、後述する手動操作機構12は、前記入力歯車6と噛合したギヤ部13を有する手動基軸14と、前記カバー本体2に形成された挿通孔2aにより上下動自在に支持された手動操作軸15と、該手動操作軸15の上端部に設けた、本例ではアルミダイカスト製の手動操作ハンドル16とから構成されている。なお、本例における手動操作機構12は一例であり、その構造は本例に限定されるものではない。   FIG. 1 is a sectional view showing an example of a valve drive device with a manual operation mechanism according to the present invention, and FIG. 2 is a partially omitted plan view of FIG. As shown in FIGS. 1 and 2, the valve drive device 1 with a manual operation mechanism (hereinafter referred to as the present device 1) in this example includes a cover body 2 and an electric motor 3 disposed in the cover body 2. An intermediate gear 5 that meshes with a pinion gear 4 provided on the rotation shaft of the electric motor 3, a gear that meshes with the intermediate gear 5, and an input gear 6 that is arranged coaxially with an output shaft, An intermeshing planetary gear reduction mechanism 7 that transmits the rotational force from the electric motor 3 through the intermediate gear 5 and the input gear 6, and an output shaft 8 that is rotated by the rotational force decelerated through the gear reduction mechanism 7. And a cam member 10 provided on a control shaft 9 extending above the output shaft 8, a valve opening degree detection member 11 that is turned on and off by the cam member 10, and a manual operation mechanism 12. A manual operation mechanism 12 described later meshes with the input gear 6. A manual base shaft 14 having a gear portion 13, a manual operation shaft 15 supported by an insertion hole 2 a formed in the cover body 2 so as to be movable up and down, and an upper end portion of the manual operation shaft 15. In this case, it is composed of a manual operation handle 16 made of aluminum die casting. In addition, the manual operation mechanism 12 in this example is an example, and the structure is not limited to this example.

図3は、手動操作ハンドルの拡大断面図であり、図4は、図3に示す手動操作ハンドルの底面図である。図3及び図4に示すように、前記ハンドル本体16(本例では、円形状の回転操作ハンドル)の軸着部位には、手動操作軸15の頂部に形成された切欠面部15a(本例では、二面部)を嵌合する係合孔16aを形成しており、この係合孔16aには切欠面部15aを係合させる係合突部16bを一体に形成している。本例では、断面略三角形の係合突部16bを4つ形成しており、各係合突部16bは、切欠面部(二面部)15と、その上部で且つ各二面部における4つの軸方向縁15e付近で部分的に係合するようにしている。   FIG. 3 is an enlarged cross-sectional view of the manual operation handle, and FIG. 4 is a bottom view of the manual operation handle shown in FIG. As shown in FIGS. 3 and 4, a notch surface portion 15 a (in this example) formed on the top of the manual operation shaft 15 is attached to a shaft attachment portion of the handle body 16 (in this example, a circular rotary operation handle). , The two surface portions) are formed, and an engagement protrusion 16b for engaging the notch surface portion 15a is formed integrally with the engagement hole 16a. In this example, four engagement protrusions 16b having a substantially triangular cross section are formed, and each engagement protrusion 16b includes a notch surface portion (two surface portions) 15 and four axial directions on the two surface portions. It is designed to partially engage in the vicinity of the edge 15e.

手動操作時において、手動操作ハンドル16に適切な操作トルクが加わっている場合には、上記切欠面部15と係合突部16bとの係合により、手動操作ハンドル16によって手動操作軸15を介して弁体Vを回転することができる。一方、手動操作ハンドル16に過剰な操作トルクが加えられた場合、例えば、弁体Vが全閉又は全開状態にあるにもかかわらず、更に回転操作した場合には、手動操作軸15の切欠面部15aによって、ハンドル本体16の係合孔16aに形成された係合突部16bを破断させる構造であり、手動操作時の過剰なトルクの伝達による内部構成部品、例えば、減速機構の各歯車や、手動操作軸、弁体Vの開度を規制するストッパ機構の破損を確実に防止する。なお、本実施形態では、切欠面部15aとして二面部を採用して説明するが、勿論、一面部などでもよく、例えば、一面部を採用する場合には、切欠面側に係合突部16bを2つ形成するとよい。このように、係合突部16bの形成される位置や、形状、個数は実施に応じて任意であり、過剰なトルクの伝達を確実に防止する構造であればよい。本実施形態では、この過剰トルクの伝達を防止する構造を採用して説明するが、勿論、この構造を採用しなくてもよい。   When an appropriate operation torque is applied to the manual operation handle 16 at the time of manual operation, the manual operation handle 16 passes the manual operation shaft 15 through the engagement of the notch surface portion 15 and the engagement protrusion 16b. The valve body V can be rotated. On the other hand, when an excessive operation torque is applied to the manual operation handle 16, for example, when the valve body V is fully closed or fully opened but further rotated, the notch surface portion of the manual operation shaft 15 is provided. 15a is a structure in which the engagement protrusion 16b formed in the engagement hole 16a of the handle body 16 is broken, and internal components due to excessive torque transmission during manual operation, for example, each gear of the reduction mechanism, The manual operation shaft and the stopper mechanism for regulating the opening degree of the valve body V are reliably prevented from being damaged. In the present embodiment, the description will be made by adopting a two-surface portion as the notch surface portion 15a, but of course, it may be a one-surface portion. Two may be formed. As described above, the position, shape, and number of the engagement protrusions 16b are arbitrary depending on the implementation, and any structure that reliably prevents excessive torque transmission may be used. In the present embodiment, the structure that prevents the transmission of excess torque will be described. Of course, this structure may not be used.

円形状のハンドル本体16には、軸芯位置より偏位した位置に、適宜の孔径を有する大小2つの着脱孔16c,16cを形成している。手動操作時において、特に手動操作トルクが重く、手動操作ハンドル16のみでは弁体Vの開閉操作が困難な場合に、前記いずれかの着脱孔16c,16cに、適宜の操作部材Dを装着して手動操作ハンドル16を回転操作することで、弁体Vの開閉操作を容易に行い得る。本例では前記着脱孔16c,16cは孔径の異なる六角孔であり、前記操作部材Dには市販の六角レンチを適用して説明するが、これに限定するものではなく、適宜の孔径を有する1つ又は複数の着脱孔16cを設けてもよく、複数設ける場合にはその偏位位置をそれぞれ異ならせてもよく、また、着脱孔16cの形状をそれぞれ異ならせてもよい。とりわけ、複数設ける場合の着脱孔16c,16cは、それぞれ異なるサイズの六角レンチDに対応するよう形成することにより、予め特定サイズの六角レンチDを用意しておく必要がなく、手持ちの六角レンチDを用いて、直ちに手動操作を行うことができる。   The circular handle body 16 is formed with two large and small detachable holes 16c, 16c having appropriate hole diameters at positions displaced from the axial center position. When manual operation torque is particularly heavy during manual operation and it is difficult to open and close the valve body V with only the manual operation handle 16, an appropriate operation member D is mounted in one of the attachment / detachment holes 16c and 16c. The valve body V can be easily opened and closed by rotating the manual operation handle 16. In this example, the attaching / detaching holes 16c and 16c are hexagonal holes having different hole diameters, and a commercially available hexagonal wrench is applied to the operation member D. However, the present invention is not limited to this, and 1 having an appropriate hole diameter. One or a plurality of attachment / detachment holes 16c may be provided. When a plurality of attachment / detachment holes 16c are provided, the displacement positions may be different from each other, and the shapes of the attachment / detachment holes 16c may be different from each other. In particular, the mounting holes 16c and 16c in the case of providing a plurality are formed so as to correspond to different sizes of hexagonal wrench D, so that it is not necessary to prepare a hexagonal wrench D of a specific size in advance, and a handheld hexagonal wrench D The manual operation can be performed immediately using the.

前記着脱孔16cはハンドル本体16の上面から下方へ形成されており、手動操作軸15の軸芯に対して平行となっている。従って、軸方向に所定長さを有することで、装着した六角レンチDを確実に支持することができ、着脱孔16cに生ずる応力を分散させることで、着脱孔16cを破損させることなく、手動による操作力を確実に手動操作軸15に伝達することができる。なお、図中16dは外周面に連続凹凸を形成した環状把持部であり、図中16eは縮径部である。この縮径部16eの孔部により、例えば、手動操作ハンドル16を取り付けたバルブ用駆動装置が屋外で使用される場合であっても、着脱孔16c内に雨水等が溜まるのを防いでいる。   The attachment / detachment hole 16 c is formed downward from the upper surface of the handle body 16 and is parallel to the axis of the manual operation shaft 15. Therefore, by having a predetermined length in the axial direction, the attached hexagon wrench D can be reliably supported, and by dispersing the stress generated in the attachment / detachment hole 16c, the attachment / detachment hole 16c is not damaged and is manually performed. The operating force can be reliably transmitted to the manual operation shaft 15. In addition, 16d in the figure is an annular gripping part in which continuous irregularities are formed on the outer peripheral surface, and 16e in the figure is a reduced diameter part. For example, even when the valve drive device to which the manual operation handle 16 is attached is used outdoors, the hole portion of the reduced diameter portion 16e prevents rainwater or the like from accumulating in the attachment / detachment hole 16c.

図5は、手動操作ハンドルの他例を示した底面図である。なお、同一部分は同一符号を付して説明する。同図に示すハンドル本体16はアルミダイカスト製であり、上記した過剰トルクの伝達を防止する構造は有していない。図中16fは切欠面部(本例では、二面部)を有した係合孔であり、この係合孔16fに手動操作軸15の頂部に形成された切欠面部15a(本例では、二面部15a)を嵌合させる。連続凹凸を形成した環状把持部16dの内周面には円筒部16gを形成しており、着脱孔16c,16cはこの円柱部16gを肉厚部としてハンドル本体16の上面から下方へ形成され、手動操作軸15の軸芯に対して平行となっている。   FIG. 5 is a bottom view showing another example of the manual operation handle. In addition, the same part attaches | subjects and demonstrates the same code | symbol. The handle main body 16 shown in the figure is made of aluminum die casting and does not have a structure for preventing the transmission of excessive torque. In the figure, 16f is an engagement hole having a notch surface portion (two surface portions in this example), and a notch surface portion 15a (in this example, two surface portions 15a) formed on the top of the manual operation shaft 15 in this engagement hole 16f. ). A cylindrical portion 16g is formed on the inner peripheral surface of the annular gripping portion 16d formed with continuous irregularities, and the attachment / detachment holes 16c, 16c are formed downward from the upper surface of the handle body 16 with the cylindrical portion 16g as a thick portion, It is parallel to the axis of the manual operation shaft 15.

円柱部16gは、ハンドル本体16の環状把持部16dの内周面に接していることに加え、手動操作軸15の上端部位を嵌め入れる筒部16hにもリブ16iを介して支持されているので、円柱部16g、ひいては着脱孔16cの強度が確保されると共に、ハンドル本体16の成形時には、溶融金属や樹脂等の手動操作ハンドル16を成形する材料がリブ16iの形成領域を介して、円柱部16gの形成領域に注入されるので、円柱部16g、ひいては着脱孔16cの成形性が確保される。従って、ハンドル本体16の軸芯位置より偏位した位置に、適宜の孔径を有する1つ又は複数の着脱孔16cを形成しても、その強度や成形性を確保することができる。   Since the cylindrical portion 16g is in contact with the inner peripheral surface of the annular gripping portion 16d of the handle main body 16, it is also supported by the cylindrical portion 16h into which the upper end portion of the manual operation shaft 15 is fitted via the rib 16i. In addition, the strength of the cylindrical portion 16g and eventually the attachment / detachment hole 16c is secured, and at the time of forming the handle main body 16, the material for forming the manual operation handle 16 such as molten metal or resin passes through the formation region of the rib 16i. Since it is injected into the formation region of 16 g, the formability of the cylindrical portion 16 g and eventually the attachment / detachment hole 16 c is ensured. Therefore, even if one or more attachment / detachment holes 16c having an appropriate hole diameter are formed at a position deviated from the axial center position of the handle main body 16, the strength and formability can be ensured.

一方で、着脱孔16cが形成された円柱部16gはリブ16iと共に、筒部16hと環状把持部16dとを支持するリブ群を形成するので、手動操作ハンドル16の強度や成形性、とりわけ、環状把持部16dの強度や成形性を相互に確保することができる。なお、図示するように、着脱孔16c,16cが形成された円柱部16g,16gを含むリブ群を直線位置に2ヶ所設けているが、これに限定するものではなく、例えば、適宜の孔径を有する複数の着脱孔16cを等間隔(例えば、90度毎)に設けて、円柱部16gや環状把持部16dの強度や成形性をより効果的なものとすることもできる。円柱部16gを環状把持部16dやリブ16iで支えない場合には、ハンドル本体16の天板部16jのみで支えることになり、強度も成形性もよくない。なお、本例ではアルミダイカスト製の手動操作ハンドル16の一例を示すものであって、その構造を限定するものではない。   On the other hand, the cylindrical portion 16g in which the attachment / detachment hole 16c is formed, together with the rib 16i, forms a rib group that supports the cylindrical portion 16h and the annular gripping portion 16d. The strength and formability of the gripping portion 16d can be mutually secured. As shown in the figure, two rib groups including the cylindrical portions 16g and 16g in which the detachable holes 16c and 16c are formed are provided at the linear position. However, the present invention is not limited to this, and for example, an appropriate hole diameter is set. The plurality of attachment / detachment holes 16c can be provided at equal intervals (for example, every 90 degrees) to make the strength and formability of the cylindrical portion 16g and the annular gripping portion 16d more effective. When the cylindrical portion 16g is not supported by the annular gripping portion 16d or the rib 16i, it is supported only by the top plate portion 16j of the handle body 16, and the strength and formability are not good. In this example, an example of the manual operation handle 16 made of aluminum die casting is shown, and the structure thereof is not limited.

図6は、電動操作時における本装置の断面図であり、図7は、図6におけるA−A線断面図である。前記手動基軸14の上端部には、平面視六角形状の係止部14aが形成されており、前記手動操作軸15の下部に一体又は別体に形成された円筒部15bの下端部には、平面視十二角形状の嵌合孔15cが形成されている。図6及び図7に示すように、電動操作(自動操作)時においては、前記手動基軸14の係止部14aと、前記手動操作軸15の嵌合孔15cとは嵌合することなく、手動操作軸15の下部に形成された円筒部15b内に手動基軸14が収納され、該手動基軸14は、電動モータ3からの回転力が中間歯車5、入力歯車6を介して伝達され、円筒部15b内で空回りする。   FIG. 6 is a cross-sectional view of the apparatus during an electric operation, and FIG. 7 is a cross-sectional view taken along line AA in FIG. A locking portion 14a having a hexagonal shape in plan view is formed at the upper end portion of the manual base shaft 14, and the lower end portion of the cylindrical portion 15b formed integrally or separately at the lower portion of the manual operation shaft 15 A fitting hole 15c having a dodecagonal shape in plan view is formed. As shown in FIGS. 6 and 7, during the electric operation (automatic operation), the locking portion 14 a of the manual base shaft 14 and the fitting hole 15 c of the manual operation shaft 15 are not fitted and manually operated. A manual base shaft 14 is accommodated in a cylindrical portion 15b formed at the lower portion of the operation shaft 15, and the manual base shaft 14 is transmitted with the rotational force from the electric motor 3 via the intermediate gear 5 and the input gear 6, and the cylindrical portion. It idles within 15b.

図8は、手動操作時における本装置の断面図であり、図9は、図8におけるB−B線断面図である。図8及び図9に示すように、手動操作時においては、手動操作ハンドル16を介して手動操作軸15を引き上げると、前記手動基軸14の係止部14aと、前記手動操作軸15の嵌合孔15cとが嵌合して手動操作が可能となる。なお、本例では平面視六角形状の係止部14a、及び平面視十二角形状の嵌合孔15cとしているが、これに限定するものではなく、確実に嵌合することができる形状のものであればよく、また、他例として、手動操作軸15に係止部(図示しない)を形成し、手動基軸14に嵌合部(図示しない)を形成して嵌合させるようにしてもよい。   FIG. 8 is a cross-sectional view of the apparatus during manual operation, and FIG. 9 is a cross-sectional view taken along line BB in FIG. As shown in FIGS. 8 and 9, during manual operation, when the manual operation shaft 15 is pulled up via the manual operation handle 16, the locking portion 14 a of the manual base shaft 14 and the manual operation shaft 15 are fitted. The hole 15c is fitted to enable manual operation. In addition, in this example, it is set as the latching | locking part 14a of the planar view hexagonal shape, and the fitting hole 15c of the planar view dodecagonal shape, However, It is not limited to this, The thing of the shape which can be fitted reliably Alternatively, as another example, a locking portion (not shown) may be formed on the manual operation shaft 15 and a fitting portion (not shown) may be formed on the manual base shaft 14 to be fitted. .

カバー本体2に形成された挿通孔2aの内周面には、溝部2b,2cを形成しており、溝部2bに手動操作軸15の外周面に設けた、本例ではC字形状の割りリング17を嵌合させて、電動操作時における手動操作軸15の位置保持をし、溝部2cに手動操作軸15の外周面に設けた割りリング17を嵌合させて、手動操作時における手動操作軸15の位置保持をするようにしている。なお、18はOリングである。   Grooves 2b and 2c are formed on the inner peripheral surface of the insertion hole 2a formed in the cover main body 2, and the C-shaped split ring is provided on the outer peripheral surface of the manual operation shaft 15 in the groove 2b. 17 is fitted to hold the position of the manual operation shaft 15 during electric operation, and the split ring 17 provided on the outer peripheral surface of the manual operation shaft 15 is fitted into the groove portion 2c to manually operate the shaft during manual operation. 15 positions are held. Reference numeral 18 denotes an O-ring.

図6及び図8に示すように、カバー本体2内には、電動モータ3等へ電力供給を行なう電源(図示しない)をオン・オフ操作するインターロックスイッチ(リミットスイッチ)19を配設しており、手動操作軸15の下部外周面に形成された突起部15dにより、インターロックスイッチ19の作動レバー19aが押圧されて作動するように設けている。これにより、手動操作軸15の突起部15dとインターロックスイッチ19の作動レバー19aが離間している手動操作時、及びカバー本体2を取り外した状態においては、電力供給は確実に停止された状態とすることができる。   As shown in FIGS. 6 and 8, an interlock switch (limit switch) 19 for turning on / off a power source (not shown) for supplying power to the electric motor 3 and the like is disposed in the cover body 2. The operating lever 19a of the interlock switch 19 is pressed and operated by a projection 15d formed on the lower outer peripheral surface of the manual operation shaft 15. As a result, during manual operation in which the protrusion 15d of the manual operation shaft 15 and the operation lever 19a of the interlock switch 19 are separated, and in a state where the cover body 2 is removed, the power supply is reliably stopped. can do.

また、カバー本体2は、ボルト等の取付部材(図示しない)を介してベース体1aに装着されており、カバー本体2を取り外す場合、ボルト等の取付部材を取り外した後、カバー本体2を引き上げると、手動操作ハンドル16の下面に形成された空隙部16kにカバー本体2の挿通孔2aの上端部位が嵌り、カバー本体2の引き上げと同時に手動操作軸15が持ち上がり、手動基軸14の係止部14aと手動操作軸15の嵌合孔15cとの嵌合状態が解除され、カバー本体2、手動操作軸15、及び手動操作ハンドル16を同時に取り外すことができる構造となっている。   The cover body 2 is attached to the base body 1a via a mounting member (not shown) such as a bolt. When removing the cover body 2, the cover body 2 is pulled up after removing the mounting member such as a bolt. Then, the upper end portion of the insertion hole 2a of the cover body 2 is fitted into the gap portion 16k formed on the lower surface of the manual operation handle 16, and the manual operation shaft 15 is lifted simultaneously with the lifting of the cover body 2, and the locking portion of the manual base shaft 14 14a and the fitting hole 15c of the manual operation shaft 15 are released, and the cover body 2, the manual operation shaft 15, and the manual operation handle 16 can be removed simultaneously.

従って、手動基軸14の係止部14aと手動操作軸15の嵌合孔15cが嵌合していない電動操作時において、カバー本体2を引き上げた時、手動基軸14の平面視六角形状の係止部14aと手動操作軸15の平面視十二角形状の嵌合孔15cとは嵌合することなく係止状態になるため、通電状態にある電動操作時においては、カバー本体2を取り外すことはできない。前記係止部14aと嵌合部15cを嵌合させるためには、手動での嵌合を行わなければならず、手動操作状態、即ち、電力供給を停止した状態でなければ、カバー本体2を取り外すことはできない構造となっている。   Accordingly, when the cover main body 14 is lifted during electric operation in which the locking portion 14a of the manual base shaft 14 and the fitting hole 15c of the manual operation shaft 15 are not fitted, the hexagonal shape of the manual base shaft 14 is locked in a plan view. The portion 14a and the fitting hole 15c having a dodecagonal shape in plan view of the manual operation shaft 15 are in a locked state without being fitted, so that the cover body 2 can be removed at the time of electric operation in an energized state. Can not. In order to fit the locking portion 14a and the fitting portion 15c, manual fitting must be performed. If the manual operation state, that is, the power supply is not stopped, the cover main body 2 is It has a structure that cannot be removed.

前記カバー本体2を取り付ける場合は、挿通孔2aによって軸心を維持された手動操作軸15の嵌合孔15cと、手動基軸14の係止部14aとを嵌合させた後、ボルト等の取付部材を介してベース体1aに取り付ける。嵌合孔15cと係止部14aとが嵌合せず、手動操作軸15の円筒部15bの下端が手動基軸14の上端に当接している状態の場合には、カバー本体2がベース体1a上に載置されないようにしており、取り付け作業者が嵌合孔15cと係止部14aとが嵌合していないことを視認できるようにしている。また、本例では、制御軸9の上部に樹脂製の弁開度計20を設けており、外側から該弁開度計20を視認可能な透明又は半透明の樹脂製の弁開度計カバー21を設けている。   When the cover body 2 is attached, after fitting the fitting hole 15c of the manual operation shaft 15 whose axial center is maintained by the insertion hole 2a and the locking portion 14a of the manual base shaft 14, attachment of bolts or the like It attaches to the base body 1a via a member. When the fitting hole 15c and the locking portion 14a are not fitted and the lower end of the cylindrical portion 15b of the manual operation shaft 15 is in contact with the upper end of the manual base shaft 14, the cover body 2 is on the base body 1a. The mounting operator can visually recognize that the fitting hole 15c and the locking portion 14a are not fitted. In this example, a resin valve opening meter 20 is provided on the upper portion of the control shaft 9, and a transparent or translucent resin valve opening meter cover that allows the valve opening meter 20 to be visually recognized from the outside. 21 is provided.

次に、本実施形態で採用した内接噛合遊星歯車減速機構7の一例について説明する。
図1に示すように、内接噛合遊星歯車減速機構7は、出力軸8と同軸上に配設されており、その構成は、入力歯車6が挿入固着される偏心体22と、該偏心体22を介して揺動回転可能に設けた外歯歯車23と、ベース体1aなどの固定側に固定され、前記外歯歯車23と内接噛合する内歯歯車24と、前記外歯歯車23の揺動回転から自転回転を取り出して出力軸8に伝える回転伝達機構25と、該回転伝達機構25を介して連結された出力軸8とから構成されている。
Next, an example of the intermeshing planetary gear speed reduction mechanism 7 employed in this embodiment will be described.
As shown in FIG. 1, the intermeshing planetary gear speed reduction mechanism 7 is disposed coaxially with the output shaft 8, and includes an eccentric body 22 into which the input gear 6 is inserted and fixed, and the eccentric body. An external gear 23 provided so as to be able to swing and rotate through 22, an internal gear 24 that is fixed to the fixed side of the base body 1 a and the like and is in mesh with the external gear 23, and the external gear 23. The rotation transmission mechanism 25 takes out the rotation of rotation from the swinging rotation and transmits it to the output shaft 8, and the output shaft 8 connected via the rotation transmission mechanism 25.

前記偏心体22は、出力軸8に対し、ベアリング26を介して相対回転可能に配置されており、図10に示すように、偏心した偏心部22aの中心は出力軸8から偏心量eだけ偏心している。偏心体22の偏心部22a外周部位にはベアリング27を設けており、該ベアリング27を介して外歯歯車23が回転自在に設けられている。外歯歯車23は、外周にトロコイド系歯形23aを有しており、該外歯歯車23と内接噛合する内歯歯車24は、ベース体1aに固定されており、外歯歯車23と相隣接する内周に円弧歯形24aを有している。   The eccentric body 22 is disposed so as to be rotatable relative to the output shaft 8 via a bearing 26. As shown in FIG. 10, the center of the eccentric portion 22a is offset from the output shaft 8 by the amount of eccentricity e. I have a heart. A bearing 27 is provided on the outer peripheral portion of the eccentric portion 22 a of the eccentric body 22, and the external gear 23 is rotatably provided via the bearing 27. The external gear 23 has a trochoidal tooth profile 23 a on the outer periphery, and the internal gear 24 that is in mesh with the external gear 23 is fixed to the base body 1 a and is adjacent to the external gear 23. An arc tooth profile 24a is provided on the inner periphery.

また、前記回転伝達機構25は、外歯歯車23に形成された複数の内ピン孔23bと、該内ピン孔23b内を遊嵌する内ピン28と、該内ピン28を一体又は別体に形成したピンフランジ29とから構成されており、該ピンフランジ29は、出力軸8に取付固定されている。   The rotation transmission mechanism 25 includes a plurality of inner pin holes 23b formed in the external gear 23, an inner pin 28 loosely fitted in the inner pin hole 23b, and the inner pin 28 integrally or separately. The pin flange 29 is formed and fixed to the output shaft 8.

ベース体1a上に配設された電動モータ3が駆動すると、該電動モータ3の回転軸に設けられたピニオンギヤ4が回転すると共に、該ピニオンギヤ4と噛合する中間歯車5を介して、出力軸8と同軸上に配設された入力歯車6が回転する。該入力歯車6は、出力軸8と同軸上に配設された偏心体22に取付固定されており、入力歯車6に伝達された回転力により、偏心体22が回転する。偏心体22の回転により、外歯歯車23は出力軸8の周りで揺動回転をしようとするが、ベース体1a等の固定側に固定された内歯歯車24によって回転が拘束され、該外歯歯車23は前記内歯歯車24に内接噛合しながら揺動する。   When the electric motor 3 disposed on the base body 1a is driven, the pinion gear 4 provided on the rotating shaft of the electric motor 3 rotates, and the output shaft 8 is connected via the intermediate gear 5 meshing with the pinion gear 4. And the input gear 6 disposed coaxially with each other. The input gear 6 is attached and fixed to an eccentric body 22 disposed coaxially with the output shaft 8, and the eccentric body 22 is rotated by the rotational force transmitted to the input gear 6. Due to the rotation of the eccentric body 22, the external gear 23 tries to swing and rotate around the output shaft 8, but the rotation is restricted by the internal gear 24 fixed to the fixed side of the base body 1a, etc. The toothed gear 23 swings while being in mesh with the internal gear 24.

例えば、外歯歯車23の歯数をN、内歯歯車24の歯数をN+1とすると、歯数差は1となり、偏心体22の1回転毎に外歯歯車23はベース体1a等の固定側に固定された内歯歯車24に対して1歯分ずれることになる。即ち、自転回転が生じる。このことは、偏心体22の1回転が外歯歯車23の−1/Nの回転に減速されたことになる。   For example, if the number of teeth of the external gear 23 is N and the number of teeth of the internal gear 24 is N + 1, the difference in the number of teeth is 1, and the external gear 23 is fixed to the base body 1a and the like every rotation of the eccentric body 22. The internal gear 24 fixed to the side is shifted by one tooth. That is, autorotation occurs. This means that one rotation of the eccentric body 22 is decelerated to a rotation of -1 / N of the external gear 23.

前記外歯歯車23の回転は、該外歯歯車23に形成された内ピン孔23b及び内ピン28の隙間によって揺動成分が吸収され、自転回転が前記内ピン28を介してピンフランジ29へ伝達され、該ピンフランジ29と連結された出力軸8へ伝達される。従って、外歯歯車23の自転回転−1/Nの回転が出力軸8へ伝達されることになり、該出力軸8と連結された弁軸(図示しない)を回転させる。   As for the rotation of the external gear 23, the swing component is absorbed by the gap between the inner pin hole 23 b and the inner pin 28 formed in the external gear 23, and the rotation of rotation is transferred to the pin flange 29 via the inner pin 28. Is transmitted to the output shaft 8 connected to the pin flange 29. Accordingly, the rotation of the external gear 23 is rotated to the output shaft 8 and the valve shaft (not shown) connected to the output shaft 8 is rotated.

このような内接噛合遊星歯車減速機構7は、コンパクトな構造で高減速比が得られることから、本実施形態における上記歯車減速機構7を用いた手動操作機構付きバルブ用駆動装置は、弁体を中間開度で保持する必要のある流量制御用バルブ(例えば、バタフライバルブ)に好適な駆動装置である。更に、中間開度での弁体保持性を向上させるには、上記歯車減速機構7における各部品間の接触摩擦係数を高くすればよいが、この場合、入力歯車6に与える回転トルクを大きくしなければならないため、駆動装置を手動操作する際には、大きい手動操作力が必要となる。   Since such an intermeshing planetary gear reduction mechanism 7 has a compact structure and a high reduction ratio, the valve drive device with a manual operation mechanism using the gear reduction mechanism 7 in the present embodiment is a valve body. Is a drive device suitable for a flow rate control valve (for example, a butterfly valve) that needs to be held at an intermediate opening. Further, in order to improve the valve body retention at the intermediate opening, the coefficient of contact friction between the components in the gear reduction mechanism 7 may be increased. In this case, the rotational torque applied to the input gear 6 is increased. Therefore, when manually operating the drive device, a large manual operation force is required.

次に、上記の実施形態の作用を説明する。
本発明の手動操作機構付きバルブ用駆動装置1は、電動操作時においては、前記手動基軸14の係止部14aと、前記手動操作軸15の嵌合孔15cとは嵌合することなく、手動操作軸15の下部に形成された円筒部15b内に収納された手動基軸14は、電動モータ3からの回転力が伝達され円筒部15b内を空回りするが、手動操作軸15、手動操作ハンドル16には回転力が伝達されないので不用意に回転することがなく、操作上、作業上の安全性を確保することができる。電動操作時は、電動モータ3からの回転力を内接噛合遊星歯車減速機構7を介して出力軸8に伝達することにより、出力軸8に接続された弁体Vを開閉操作する。
Next, the operation of the above embodiment will be described.
The valve drive device 1 with a manual operation mechanism of the present invention can be operated manually without engaging the engaging portion 14a of the manual base shaft 14 and the fitting hole 15c of the manual operation shaft 15 during electric operation. The manual base shaft 14 accommodated in the cylindrical portion 15b formed at the lower portion of the operation shaft 15 is rotated by the rotational force from the electric motor 3 and idles in the cylindrical portion 15b. Since no rotational force is transmitted to the, there is no inadvertent rotation, and operational safety can be ensured. During the electric operation, the rotational force from the electric motor 3 is transmitted to the output shaft 8 via the intermeshing planetary gear reduction mechanism 7, thereby opening and closing the valve body V connected to the output shaft 8.

手動操作にする場合は、手動操作ハンドル16を介して手動操作軸15を引き上げるとその引き上げに連動して、押圧状態(電源オン)にあった手動操作軸15の突起部15dと、インターロックスイッチ19の作動レバー19aとが離間して押圧状態が解除され、電源からの電力供給が停止(電源オフ)されると共に、前記手動基軸14の係止部14aと、前記手動操作軸15の嵌合孔15cとが嵌合して手動操作が可能となる。これにより、手動操作軸15の回転力を内接噛合遊星歯車減速機構7を介して出力軸8に伝達可能となり、出力軸8に接続された弁体Vを開閉操作する。従って、直ちに手動による弁体Vの開閉操作を行うことができる。   In the case of manual operation, when the manual operation shaft 15 is pulled up via the manual operation handle 16, the protrusion 15d of the manual operation shaft 15 in the pressed state (power-on) and the interlock switch are interlocked with the pulling up. 19 is released from the operating lever 19a, the power supply from the power source is stopped (power off), and the locking portion 14a of the manual base shaft 14 and the manual operation shaft 15 are fitted. The hole 15c is fitted to enable manual operation. As a result, the rotational force of the manual operation shaft 15 can be transmitted to the output shaft 8 via the intermeshing planetary gear reduction mechanism 7 and the valve body V connected to the output shaft 8 is opened and closed. Therefore, it is possible to immediately open and close the valve body V manually.

手動操作時において、特に手動操作トルクが重い場合には、手動操作ハンドル16の着脱孔16cに、本例では市販の六角レンチDを装着し、この六角レンチDを把持して回転操作する。図11に示すように、着脱孔16cは手動操作ハンドル16の固着位置より偏芯した位置(偏位距離t)に形成されているので、同図中(a)で示すように、手動操作ハンドル16の中心(手動操作軸15の軸芯)と着脱孔16cを結ぶ延長線上に六角レンチDの把持部を一致させて装着した場合、六角レンチDを介して手動操作を行う際の回転モーメントは、中心からの偏位距離tと六角レンチDの把持位置との距離に基づいたものとなるので、手動操作ハンドル16のみで操作する場合に比べて、軽い操作力で手動操作を行うことができる。すなわち、同図中(a)において、手動操作ハンドル16のみで操作する場合には、環状把持部16dの最小径rに基づく回転モーメントとなるのに対し、六角レンチDの端部を把持して操作する場合には、手動操作ハンドル16の中心から六角レンチDの端部までの実質上の長さ(突出量)La(La>r>t)に基づく回転モーメントにより、軽い操作力で弁体Vの手動開閉を行うことができる。   During manual operation, particularly when the manual operation torque is heavy, a commercially available hexagon wrench D is mounted in the attachment / detachment hole 16c of the manual operation handle 16, and the hexagon wrench D is gripped and rotated. As shown in FIG. 11, since the attachment / detachment hole 16c is formed at a position (deviation distance t) that is eccentric from the fixing position of the manual operation handle 16, the manual operation handle is shown in FIG. When the gripping part of the hexagon wrench D is mounted on the extended line connecting the center of 16 (the axis of the manual operation shaft 15) and the attachment / detachment hole 16c, the rotational moment when performing manual operation via the hexagon wrench D is Since it is based on the distance between the deviation distance t from the center and the holding position of the hexagon wrench D, manual operation can be performed with a lighter operating force than when operating only with the manual operation handle 16. . That is, in FIG. 9A, when the operation is performed only with the manual operation handle 16, the rotational moment is based on the minimum diameter r of the annular gripping portion 16d, while the end of the hexagon wrench D is gripped. In the case of operation, the valve element is operated with a light operating force by a rotational moment based on a substantial length (projection amount) La (La> r> t) from the center of the manual operation handle 16 to the end of the hexagon wrench D. V can be manually opened and closed.

同図中(a)〜(c)に示すように、六角レンチDは着脱孔16cに対して適宜状態で装着することができる。同図中(b)において、手動操作ハンドル16の中心(手動操作軸15の軸芯)から六角レンチDの端部までの実質上の長さ(突出量)Lbは、同図中(a)における手動操作ハンドル16の中心(手動操作軸15の軸芯)から六角レンチDの端部までの実質上の長さ(突出量)Laより六角レンチDが手動操作ハンドル16の平面領域に投影される長さ分短いものとなるので、手動操作に必要なスペースを小さくすることができる。(b)において手動操作を行う際の回転モーメントは、(a)に比して小さくなるものの、Lb>rの関係を有していることから、手動操作ハンドル16のみで操作する場合よりも軽い操作力で手動操作を行うことができる。   As shown to (a)-(c) in the figure, the hexagon wrench D can be suitably mounted | worn with respect to the attachment / detachment hole 16c. In FIG. 8B, the substantial length (projection amount) Lb from the center of the manual operation handle 16 (the axis of the manual operation shaft 15) to the end of the hexagon wrench D is shown in FIG. The hexagon wrench D is projected onto the plane area of the manual operation handle 16 from the substantial length (projection amount) La from the center of the manual operation handle 16 (the axis of the manual operation shaft 15) to the end of the hexagon wrench D. Therefore, the space required for manual operation can be reduced. Although the rotational moment when performing manual operation in (b) is smaller than that in (a), it has a relationship of Lb> r, so it is lighter than when operating with only the manual operation handle 16. Manual operation can be performed with operating force.

また、バルブ用駆動装置に手動操作ハンドル16を付設する場合であっても、弁体Vの開閉に必要な最大操作力は、六角レンチDを装着した際の回転モーメントに基づいて得ればよいことから、ハンドル本体16の径を必要最小限の大きさに抑えることができるので、装置本体の大きさをコンパクト化することができる。バルブ用駆動装置1の取り付けスペースが狭い場合には、上記したように、六角レンチDを着脱孔16cに対して適宜状態で装着することにより、手動操作ハンドル16の中心(手動操作軸15の軸芯)から六角レンチDの端部までの実質上の長さ(突出量)を短くすることができ、取り付けスペースが狭い場合にも十分に対応することができる。   Even when the manual operation handle 16 is attached to the valve drive device, the maximum operation force required to open and close the valve body V may be obtained based on the rotational moment when the hexagon wrench D is attached. As a result, the diameter of the handle main body 16 can be reduced to the minimum necessary size, so that the size of the apparatus main body can be made compact. When the mounting space for the valve drive device 1 is small, as described above, the hexagon wrench D is attached to the attachment / detachment hole 16c in an appropriate state, so that the center of the manual operation handle 16 (the axis of the manual operation shaft 15) The substantial length (projection amount) from the core) to the end of the hexagon wrench D can be shortened, and it is possible to sufficiently cope with a case where the installation space is narrow.

手動操作時において、特に手動操作トルクが重い場合には、手動操作ハンドル16の着脱孔16cに六角レンチDを装着し、この六角レンチDを把持して回転操作するのであるが、既に弁体Vが全閉又は全開状態にあるにもかかわらず、更に回転操作した場合には、その荷重により係合突部16bが破断して手動操作軸15と手動操作ハンドル16との係合状態が適正に維持されなくなり、この状態において回転操作は行えず、従って、それ以降、過剰なトルクが加えられることはない。   During manual operation, particularly when the manual operation torque is heavy, a hexagon wrench D is attached to the attachment / detachment hole 16c of the manual operation handle 16, and the hexagon wrench D is gripped and rotated. If the rotation is further performed in spite of the fully closed or fully open state, the engagement protrusion 16b is broken by the load, and the engagement state between the manual operation shaft 15 and the manual operation handle 16 is properly set. In this state, the rotation operation cannot be performed, so that no excessive torque is applied thereafter.

駆動装置内に出力軸8を所定角度内に回転制御するためのストッパ機構を設けている場合、このストッパ機構に過剰なトルクが伝達されると、これら内部構成部品の破損を引き起こすことになるが、上記したように、本発明の手動操作ハンドル16を用いることで、手動操作時の過剰なトルクがストッパ機構をはじめ、内部構成部品に伝達されることはなく、これらの部品を確実に保護することができる。また、破損した手動操作ハンドル16を交換するのみで修理が完了し、再び手動操作ハンドル16による手動操作を行うことができるので、手動操作ハンドル16以外の部品(例えば、ピン等)を用いたり、取り外したりする必要なく、過剰なトルクの伝達を防ぎ、作業性、経済性にも優れた手動操作機構付きバルブ用駆動装置を実現することができる。   When a stopper mechanism for controlling the rotation of the output shaft 8 within a predetermined angle is provided in the driving device, if excessive torque is transmitted to the stopper mechanism, these internal components may be damaged. As described above, by using the manual operation handle 16 of the present invention, excessive torque during manual operation is not transmitted to internal components such as the stopper mechanism, and these components are reliably protected. be able to. Further, the repair can be completed simply by exchanging the damaged manual operation handle 16, and the manual operation by the manual operation handle 16 can be performed again. Therefore, parts other than the manual operation handle 16 (for example, pins) can be used. Without having to be removed, it is possible to realize a valve drive device with a manual operation mechanism that prevents excessive torque transmission and is excellent in workability and economy.

次に、本発明における手動操作機構付きバルブ用駆動装置の他例として、手動操作ハンドルを付設しない場合について説明する。なお、同一部分は同一符号を付して説明する。
図12は、本発明の手動操作機構付きバルブ用駆動装置の他例を示した断面図である。同図に示すように、ハンドルとしての手動操作部は付設せず、カバー本体2内に手動操作軸15に固定した回転体30を内蔵し、この回転体30の中心、即ち手動操作軸15の軸芯から距離tだけ偏位した位置に、孔径の異なる着脱孔(着脱部)30a,30aを形成した構造である。なお、符号12aは回転体30を手動操作軸15に固定するための止めネジであり、回転体30の回転は手動操作軸15を介して弁体Vに伝達される。符号32はカバー本体2の内壁と回転体30との間をシールするOリングである。前記構成によれば、電動操作時には、バルブ用駆動装置の外方への突出部がなく、手動操作時にのみ、カバー本体2からキャップ(図示しない)を取り外して回転体30を露出させ、カバー本体2の開口部31から上記回転体30の着脱孔30aに六角レンチDを装着し、上記実施形態と同様の効果を得る。また、手動操作軸15は別途のクラッチ構造(図示しない)を用いることにより、駆動装置の電動操作時において、モータ(図示しない)や減速機構(図示しない)と切り離すようにしてもよい。
Next, a case where a manual operation handle is not provided will be described as another example of the valve drive device with a manual operation mechanism in the present invention. In addition, the same part attaches | subjects and demonstrates the same code | symbol.
FIG. 12 is a cross-sectional view showing another example of the valve drive device with a manual operation mechanism of the present invention. As shown in the figure, a manual operation section as a handle is not provided, and a rotating body 30 fixed to the manual operation shaft 15 is built in the cover body 2, and the center of the rotating body 30, that is, the manual operation shaft 15 is arranged. In this structure, attachment holes (attachment / detachment portions) 30a and 30a having different hole diameters are formed at positions displaced from the shaft center by a distance t. Reference numeral 12 a denotes a set screw for fixing the rotating body 30 to the manual operation shaft 15. The rotation of the rotating body 30 is transmitted to the valve body V through the manual operation shaft 15. Reference numeral 32 denotes an O-ring that seals between the inner wall of the cover body 2 and the rotating body 30. According to the above configuration, there is no outward projecting portion of the valve drive device at the time of electric operation, and the cap 30 (not shown) is removed from the cover body 2 to expose the rotating body 30 only at the time of manual operation. A hexagon wrench D is attached to the attachment / detachment hole 30a of the rotating body 30 through the two openings 31 to obtain the same effect as in the above embodiment. Further, the manual operation shaft 15 may be separated from a motor (not shown) and a speed reduction mechanism (not shown) by using a separate clutch structure (not shown) when the driving device is electrically operated.

空圧・油圧による駆動装置や手動ギヤのみからなる駆動装置など、あらゆる開閉弁に適用することが可能である。   The present invention can be applied to any on-off valve such as a pneumatic / hydraulic driving device or a driving device including only a manual gear.

本発明の手動操作機構付きバルブ用駆動装置の一例を示した断面図である。It is sectional drawing which showed an example of the drive device for valves with a manual operation mechanism of this invention. 図1における一部省略平面図である。FIG. 2 is a partially omitted plan view in FIG. 1. 手動操作ハンドルの拡大断面図である。It is an expanded sectional view of a manual operation handle. 図3に示す手動操作ハンドルの底面図である。It is a bottom view of the manual operation handle shown in FIG. 手動操作ハンドルの他例を示した底面図である。It is the bottom view which showed the other example of the manual operation handle. 電動操作時における本発明の手動操作機構付きバルブ用駆動装置の断面図である。It is sectional drawing of the drive device for valves with a manual operation mechanism of this invention at the time of electric operation. 図6におけるA−A線断面図である。It is the sectional view on the AA line in FIG. 手動操作時における本発明の手動操作機構付きバルブ用駆動装置の断面図である。It is sectional drawing of the drive device for valves with a manual operation mechanism of this invention at the time of manual operation. 図8におけるB−B線断面図である。It is the BB sectional view taken on the line in FIG. 図1におけるC−C線断面図である。It is CC sectional view taken on the line in FIG. 手動操作ハンドルの作用を示した平面図である。It is the top view which showed the effect | action of a manual operation handle. 本発明の手動操作機構付きバルブ用駆動装置の他例を示した部分拡大断面図である。It is the elements on larger scale which showed the other example of the drive device for valves with a manual operation mechanism of this invention.

符号の説明Explanation of symbols

1 手動操作機構付きバルブ用駆動装置(本装置)
2 カバー本体
3 電動モータ
7 減速機構(内接噛合遊星歯車減速機構)
15 手動操作軸
15a 切欠面部(二面部)
16 手動操作ハンドル
16a,16f 係合孔
16b 係合突部
16c 着脱部(着脱孔)
30 回転体
30a 着脱部(着脱孔)
D 操作部材(六角レンチ)
1 Valve drive device with manual operation mechanism (this device)
2 Cover body 3 Electric motor 7 Reduction mechanism (internal mesh planetary gear reduction mechanism)
15 Manual operation shaft 15a Notched surface (two surfaces)
16 Manual operation handle 16a, 16f Engagement hole 16b Engagement protrusion 16c Detachable part (detachable hole)
30 Rotating body 30a Detachable part (detachable hole)
D Operation member (hexagon wrench)

Claims (2)

電動モータ、減速機構や手動操作軸等の内部構成部品をカバー本体に内蔵したバルブ用駆動装置であって、前記手動操作軸をカバー本体の上部に突出させ、この突出部位に手動用の円形状ハンドル本体を軸着し、このハンドル本体の軸着位置より偏芯した位置に、前記手動操作軸の軸芯に対して平行に上面から下方へ向けて六角孔を形成し、この六角孔にL形の六角レンチを着脱させ、前記六角孔に装着した六角レンチを回転させてハンドル本体を手動操作可能としたことを特徴とする手動操作機構付きバルブ用駆動装置。 A drive device for a valve in which internal components such as an electric motor, a speed reduction mechanism, and a manual operation shaft are built in a cover body. The manual operation shaft protrudes from the upper portion of the cover body, and a manual circular shape is formed on the protruding portion. A handle body is attached to the shaft, and a hexagonal hole is formed at a position eccentric from the shaft attachment position of the handle body in parallel with the axis of the manual operation shaft from the upper surface to the lower side. A valve drive device with a manual operation mechanism , wherein a handle main body can be manually operated by attaching and detaching a hexagonal wrench and rotating a hexagon wrench attached to the hexagonal hole . 前記ハンドル本体の軸着部位には、手動操作軸の頂部に形成した切欠面部を嵌合する係合孔を形成し、この係合孔に前記切欠面部を部分的に係合させる係合突部を形成した請求項1に記載の手動操作機構付きバルブ用駆動装置。 An engagement hole for fitting a notch surface portion formed at the top of the manual operation shaft is formed in the shaft attachment portion of the handle main body, and the engagement protrusion for partially engaging the notch surface portion with the engagement hole. The valve drive device with a manual operation mechanism according to claim 1, wherein:
JP2004068548A 2004-03-11 2004-03-11 Valve drive unit with manual operation mechanism Expired - Lifetime JP4526842B2 (en)

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JP5097347B2 (en) * 2005-12-26 2012-12-12 オリンパスメディカルシステムズ株式会社 Endoscope and endoscope system
JP4986762B2 (en) * 2007-08-03 2012-07-25 アズビル株式会社 Electric actuator
TWI531740B (en) 2010-03-31 2016-05-01 西部電機股份有限公司 Actuator
TWI520475B (en) 2010-04-07 2016-02-01 西部電機股份有限公司 Actuator and method for detecting position using same
JP2012054028A (en) * 2010-08-31 2012-03-15 Panasonic Electric Works Sunx Co Ltd Photoelectric sensor
EP2678709B1 (en) 2011-02-21 2018-03-28 Transrobotics, Inc. System and method for sensing distance and/or movement

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JPS5539471Y2 (en) * 1976-03-23 1980-09-16
JPS5852375U (en) * 1981-10-06 1983-04-09 松下電器産業株式会社 electric valve
JPH039576Y2 (en) * 1985-10-23 1991-03-11
JPH0650452A (en) * 1992-07-28 1994-02-22 Matsushita Electric Works Ltd Manual operating structure of motor opening/closing type valve

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