JP4909122B2 - Switchgear - Google Patents

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JP4909122B2
JP4909122B2 JP2007043863A JP2007043863A JP4909122B2 JP 4909122 B2 JP4909122 B2 JP 4909122B2 JP 2007043863 A JP2007043863 A JP 2007043863A JP 2007043863 A JP2007043863 A JP 2007043863A JP 4909122 B2 JP4909122 B2 JP 4909122B2
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opening
closing
string
shaft
winding
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JP2008208546A (en
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則夫 石倉
利幸 大橋
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Bunka Shutter Co Ltd
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Bunka Shutter Co Ltd
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Description

本発明は、閉鎖動作中の開閉体が障害物に接触した際に、該開閉体の閉鎖動作を停止するようにした開閉装置に関し、特に防火シャッター装置として好適な開閉装置に関する。   The present invention relates to an opening / closing device adapted to stop the closing operation of the opening / closing body when the opening / closing body during the closing operation comes into contact with an obstacle, and more particularly to an opening / closing device suitable as a fire shutter device.

従来、この種の発明には、例えば特許文献１に記載されたもののように、閉鎖動作中の開閉体（シャッターカーテン２）が、その閉鎖方向側の障害物に当接した際に、該開閉体の下端の可動座板（下座板１０１）を障害物からの押圧力により相対的に上昇させ、その可動座板の上昇を感知部（マイクロスイッチ１０５）により感知し、この感知信号をコード（１１ａ〜１１ｃ）により制御装置（８）へ送信し、該制御装置（８）からの制御信号によって開閉機（７）のブレーキ機構を作動させて、前記開閉体（シャッターカーテン２）の閉鎖動作を停止するようにしたものがある。   Conventionally, in this type of invention, when the opening / closing body (shutter curtain 2) during the closing operation is in contact with an obstacle on the closing direction, such as that described in Patent Document 1, for example, The movable seat plate (lower seat plate 101) at the lower end of the body is relatively raised by the pressing force from the obstacle, and the rise of the movable seat plate is sensed by the sensing unit (micro switch 105), and this sensing signal is coded. (11a to 11c) is transmitted to the control device (8), and the brake mechanism of the switch (7) is actuated by the control signal from the control device (8) to close the opening / closing body (shutter curtain 2). There is something to stop.

前記開閉機（７）におけるブレーキ機構の構造を詳細に説明すれば、例えば特許文献２に記載されたもののように、電磁ソレノイド（電磁クラッチ１７）を非通電状態にした場合には、ブレーキドラム（４）が制動スプリング（１６）の付勢力によりブレーキシュー（２）に当接し、駆動軸（電動機軸１）の回転が制動された状態となる。
また、前記電磁ソレノイド（電磁クラッチ１７）を通電状態にすれば、該電磁ソレノイドの磁力に吸引されてブレーキドラム（４）がブレーキシュー（２）から離れるため、駆動軸（電動機軸１）が回転自在な状態となる。 The structure of the brake mechanism in the opening / closing machine (7) will be described in detail. When the electromagnetic solenoid (electromagnetic clutch 17) is in a non-energized state, for example, as described in Patent Document 2, the brake drum ( 4) comes into contact with the brake shoe (2) by the urging force of the brake spring (16), and the rotation of the drive shaft (motor shaft 1) is braked.
When the electromagnetic solenoid (electromagnetic clutch 17) is energized, the brake drum (4) is separated from the brake shoe (2) by being attracted by the magnetic force of the electromagnetic solenoid, so that the drive shaft (motor shaft 1) rotates. It becomes a free state.

したがって、例えば、特許文献１に記載された開閉装置に特許文献２に記載された開閉機を具備した場合には、電磁ソレノイド（電磁クラッチ１７）を通電状態にすることで、開閉体（シャッターカーテン２）を自重降下させることができ、また、その自重降下中に、開閉体（シャッターカーテン２）が障害物に当接した際には、電磁ソレノイド（電磁クラッチ１７）を非通電にすれば、開閉体（シャッターカーテン２）の閉鎖動作を停止することができる。   Therefore, for example, when the opening / closing apparatus described in Patent Document 1 is equipped with the switch described in Patent Document 2, the electromagnetic solenoid (electromagnetic clutch 17) is energized to open / close the shutter (shutter curtain). 2) can be lowered by its own weight, and when the opening / closing body (shutter curtain 2) comes into contact with an obstacle during its own weight drop, if the electromagnetic solenoid (electromagnetic clutch 17) is deenergized, The closing operation of the opening / closing body (shutter curtain 2) can be stopped.

しかしながら、前記のような構成では、可動座板（下座板１０１）の上昇を感知する感知部（マイクロスイッチ１０５）、及びコード（１１ａ〜１１ｃ）を収納する構造（固定プーリ１８ａ，可動プーリ１８ｂ，フラットバー２０等）が複雑でコストの高騰を招き易い。   However, in the configuration as described above, a structure (fixed pulley 18a, movable pulley 18b) that houses a sensing unit (micro switch 105) that senses the rise of the movable seat plate (lower seat plate 101) and cords (11a to 11c). , Flat bar 20 etc.) is complicated and is likely to cause an increase in cost.

また、上記開閉装置を例えば防火シャッター装置として用いる場合には、火災等に起因する停電が発生した際にも、電磁ソレノイド（電磁クラッチ１７）を通電状態にして開閉体（シャッターカーテン２）を自重降下できるように、バッテリーを具備している。
しかし、このような構成であっても、メンテナンス不良等に起因して前記バッテリーの電力が十分に得られない場合等には、電磁ソレノイド（電磁クラッチ１７）の通電状態を維持できないので、開閉体（シャッターカーテン２）を自重降下させることができなかったり、自重降下中の開閉体を途中停止させてしまったり等するおそれがある。
特開２００４−３０８２２２号公報 実開平０１−１１８０８４号公報 Further, when the opening / closing device is used as a fire shutter device, for example, even when a power failure caused by a fire or the like occurs, the electromagnetic solenoid (electromagnetic clutch 17) is energized and the opening / closing body (shutter curtain 2) is self-weighted. It is equipped with a battery so that it can descend.
However, even in such a configuration, the energization state of the electromagnetic solenoid (electromagnetic clutch 17) cannot be maintained when the power of the battery cannot be sufficiently obtained due to poor maintenance or the like. There is a possibility that the (shutter curtain 2) cannot be lowered by its own weight, or the opening / closing body under its own weight is stopped halfway.
JP 2004-308222 A Japanese Utility Model Publication No. 01-118084

本発明は上記従来事情に鑑みてなされたものであり、その課題とする処は、電源不良等の影響を受け難い構造でもって、開閉体の閉鎖動作を障害物との接触により停止することができる開閉装置を提供することにある。   The present invention has been made in view of the above-described conventional circumstances, and the problem is that the closing operation of the opening / closing body is stopped by contact with an obstacle with a structure that is hardly affected by a power failure or the like. An object of the present invention is to provide a switchgear that can be used.

上記課題を解決するために第一の発明は、スライドしながら閉鎖動作可能な開閉体本体と、該開閉体本体の閉鎖方向端部に接続されて該開閉体本体に相対して開放方向へ移動可能な可動座板と、前記開閉体本体の閉鎖動作を制動したり該制動状態を解除したりするブレーキ機構とを備えた開閉装置において、前記開閉体本体の開放方向側の不動部位に回動可能に支持された軸体と、該軸体の周囲に回動可能に支持された巻取体と、前記軸体に対する前記巻取体の繰り出し方向の回転に抵抗を与えるロータリーダンパー手段と、該巻取体を前記軸体に対し巻き取り方向へ付勢する付勢手段と、該巻取体の外周部に一端側が巻かれるとともに、その他端側が前記可動座板の開放方向への移動に伴って張力を緩めるように前記開閉体本体又は前記可動座板に止着された第一紐状部材と、前記巻取体の繰り出し方向の回転に伴って引っ張られるように前記軸体の外周部に一端側が止着されるとともに他端側が前記ブレーキ装置に対し操作可能に連絡された第二紐状部材とを具備し、前記可動座板の前記開閉体本体に相対する開放方向への移動により、前記第一紐状部材を前記巻取体に巻戻して前記第二紐状部材の張力を低下させ、その張力の低下により、前記ブレーキ機構を解除状態から制動状態にするようにしたことを特徴とする。   In order to solve the above-mentioned problems, a first invention includes an opening / closing body main body that can be closed while sliding, and is connected to an end of the opening / closing body main body in a closing direction and moves in an opening direction relative to the opening / closing body body An opening / closing device comprising a movable seat plate and a brake mechanism that brakes or releases the closing state of the opening / closing body main body, and rotates to a stationary part on the opening direction side of the opening / closing body body A shaft body that is supported, a winding body that is rotatably supported around the shaft body, a rotary damper means that provides resistance to rotation of the winding body in the unwinding direction with respect to the shaft body, and An urging means for urging the winding body with respect to the shaft body in the winding direction, and one end side is wound around the outer peripheral portion of the winding body, and the other end side is associated with the movement of the movable seat plate in the opening direction. The opening / closing body or the movable body so as to relax the tension. A first string-like member fixed to the seat plate, and one end side is fixed to the outer peripheral portion of the shaft body so as to be pulled along with rotation of the winding body in the extending direction, and the other end side is the brake device A second string member that is operatively communicated with the movable seat plate, and the first string member is wound around the winding body by moving the movable seat plate in an opening direction relative to the opening / closing body body. The second string-like member is returned to reduce the tension, and the brake mechanism is changed from the released state to the braked state by the decrease in the tension.

ここで、上記開閉装置には、開閉体が閉鎖動作のみを行うように用いられる態様（例えば防火シャッター装置等）、開閉体が開放動作と閉鎖動作との双方を行うように用いられる態様等を含む。
また、この開閉装置には、開閉体をその開放方向側の巻取軸によって巻取り、該巻取軸から繰出すようにした態様や、開閉体をその開放方向側の収納部位へ巻き取ることなく収納し、該収納部位から繰出すようにした態様（例えばオーバーヘッドドア等）等を含む。 Here, the above-described opening / closing device includes an aspect in which the opening / closing body is used to perform only the closing operation (for example, a fire shutter device), an aspect in which the opening / closing body is used to perform both the opening operation and the closing operation, and the like. Including.
Further, in this opening / closing device, the opening / closing body is wound by the winding shaft on the opening direction side, and the mode in which the opening / closing body is fed out from the winding shaft, or the opening / closing body is wound on the storage portion on the opening direction side. A mode (for example, an overhead door etc.) etc. which are stored without being stored and fed out from the storage site are included.

また、上記開閉体には、複数のスラットやパイプを開閉方向へ連設してなる態様や、単数もしくは複数のパネルや、シート状物、ネット状物を開閉方向へ設けてなる態様、あるいはスラット、パネル、パイプ、シート状物、ネット状物等を適宜に組み合わせてなる態様等を含む。   The opening / closing body includes an aspect in which a plurality of slats and pipes are continuously provided in the opening / closing direction, an aspect in which one or more panels, a sheet-like object, and a net-like object are provided in the opening / closing direction, or a slat. , A panel, a pipe, a sheet-like material, a net-like material, or the like.

また、上記ブレーキ機構は周知の機構を用いてもよく、このブレーキ機構には、上記開閉体本体を巻き取ったり繰り出したりする巻取軸の回転を制動する態様や、開閉体本体に直接接触して該開閉体本体の閉鎖動作を制動する態様等を含む。   In addition, a known mechanism may be used as the brake mechanism, and the brake mechanism is configured to brake the rotation of the winding shaft that winds or unwinds the opening / closing body, or directly contacts the opening / closing body. And a mode of braking the closing operation of the opening / closing body main body.

また、上記不動部位とは、開閉動作する上記開閉体本体に相対して不動な部位であればよく、この不動部位には、例えば、上記開閉体本体をその開放方向側で収納する収納ケースや、当該開閉装置の設置対象となる構造物等を含む。   The immovable part may be an immovable part relative to the opening / closing body main body that opens and closes. The immovable part includes, for example, a storage case for storing the opening / closing body main body on the opening direction side, In addition, a structure or the like to which the switchgear is installed is included.

また、上記軸体、上記巻取体、及び上記ロータリーダンパー手段は、周知構造のロータリーダンパー装置によって構成することが可能である。このロータリーダンパー装置は、例えば、流体の粘性抵抗により軸体の回転に抵抗を与える構成等とすればよい。
このロータリーダンパー手段は、上記巻取体の繰り出し方向の回転と巻き取り方向の回転との双方に抵抗を付加する態様としてもよいが、好ましくは、上記巻取体の繰り出し方向の回転のみに抵抗を付加し、巻き取り方向の回転には抵抗を付加しない態様、すなわちワンウェイタイプのロータリーダンパー装置等とする。 Further, the shaft body, the winding body, and the rotary damper means can be configured by a rotary damper device having a known structure. For example, the rotary damper device may be configured to provide resistance to rotation of the shaft body by the viscous resistance of the fluid.
The rotary damper means may be configured to add resistance to both the rotation in the unwinding direction and the rotation in the winding direction of the winding body, but preferably resists only the rotation of the winding body in the unwinding direction. And a mode in which no resistance is added to the rotation in the winding direction, that is, a one-way type rotary damper device or the like.

また、第二の発明では、前記ブレーキ機構は、前記開閉体本体の閉鎖動作に連動して回転する出力軸と、付勢部材によって付勢されて前記出力軸に係合するブレーキ軸と、該ブレーキ軸を前記出力軸から離脱するために動かされる操作部とを備え、第二紐状部材の前記他端側を前記操作部に連絡し、前記巻取体の繰り出し方向の回転に伴って上昇する第二紐状部材の張力によって前記操作部を離脱操作方向へ作動させ、同巻取体の巻き取り方向の回転に伴って第二紐状部材の張力が低下した際には前記付勢部材の付勢力によって前記操作部を係合操作方向へ作動させるようにしたことを特徴とする。   In the second invention, the brake mechanism includes an output shaft that rotates in conjunction with a closing operation of the opening / closing body, a brake shaft that is urged by a urging member and engages the output shaft, An operating portion that is moved to disengage the brake shaft from the output shaft, and communicates the other end side of the second string-like member to the operating portion, and ascends as the winding body rotates in the extending direction. The urging member is actuated when the tension of the second string-like member is reduced by the operation of the operating portion in the detaching operation direction by the tension of the second string-like member to be rotated in the take-up direction of the winding body. The operation portion is actuated in the engagement operation direction by the urging force.

また、第三の発明では、前記開閉体本体又は前記可動座板に、前記可動座板と連動して開閉体開放方向へ移動するように滑車部材を支持し、前記第一紐状部材の前記他端側を前記滑車部材の下半部に掛け巻いて前記開閉体本体に止着したことを特徴とする。   Further, in the third invention, a pulley member is supported on the opening / closing body main body or the movable seat plate so as to move in the opening / closing body opening direction in conjunction with the movable seat plate, and the first string-like member The other end side is wrapped around the lower half of the pulley member and fixed to the opening / closing body main body.

ここで、前記「前記可動座板と連動して開閉体開放方向へ移動するように滑車部材を支持し」という構成には、開閉体本体の閉鎖方向側に、可動座板に押圧されて開放方向へ揺動するように揺動部材を設け、該揺動部材に滑車部材を支持するようにした態様や、可動座板に対し滑車部材を回動自在に支持することで、可動座板の開放方向への移動に伴って滑車部材も開放方向へ移動するようにした態様等を含む。   Here, in the configuration of “supporting the pulley member so as to move in the opening / closing body opening direction in conjunction with the movable seat plate”, the opening is pressed by the movable seat plate on the closing direction side of the opening / closing body body. The swing member is provided so as to swing in the direction, and the pulley member is supported by the swing member, or the pulley member is rotatably supported with respect to the movable seat plate. The embodiment includes a mode in which the pulley member also moves in the opening direction along with the movement in the opening direction.

また、第四の発明では、前記開閉体本体には相対的に開放方向へ移動した際の前記可動座板に押圧されて揺動するように開閉体幅方向へわたる揺動部材が支持され、この揺動部材には前記滑車部材が支持されていることを特徴とする。   In the fourth invention, the opening / closing body main body supports a swinging member extending in the opening / closing body width direction so as to be pressed and swinged by the movable seat plate when moved in the opening direction relatively. The swing member is supported by the pulley member.

また、第五の発明では、第二紐状部材を引っ張って該第二紐状部材の弛みを防ぐ引張バネを具備したことを特徴とする。   Further, the fifth invention is characterized in that a tension spring is provided which pulls the second string-like member to prevent the second string-like member from loosening.

また、第六の発明では、上記ブレーキ機構における解除動作に抵抗を与えるダンパー手段が具備されていることを特徴とする。   According to a sixth aspect of the invention, there is provided a damper means for giving resistance to a release operation in the brake mechanism.

なお、本明細書中において「開閉体厚さ方向」とは、閉鎖状態の上記開閉体の厚さ方向を意味する。
また、本明細書中において「開閉体幅方向」とは、上記開閉体の開閉方向と略直交する方向であって、該開閉体の厚さ方向ではない方向を意味する。
また、本明細書中において「開閉体開閉方向」とは、上記開閉体が空間を仕切ったり開放したりするためにスライドする方向を意味する。 In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state.
Further, in this specification, the “opening / closing body width direction” means a direction that is substantially orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body.
Further, in this specification, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides in order to partition or open the space.

本発明は、以上説明したように構成されているので、以下に記載されるような作用効果を奏する。
第一の発明によれば、開閉体本体が閉鎖動作すると、巻取体が第一紐状部材を繰り出しながら回転し、その巻取体の回転力により前記軸体にも同方向への回転力が作用する。そのため、第二紐状部材が軸体の外周部によって引っ張られる。
また、開閉体本体の閉鎖動作中、可動座板が障害物に当接し、可動座板が開閉体本体に相対して開放方向へ移動すると、第一紐状部材の張力が弛み、該第一紐状部材が巻取体に巻き戻される。そして、その際の巻取体の巻き取り方向の回転により、軸体に作用していた前記回転力が解除される。したがって、第二紐状部材の張力が低下し、その張力の低下によってブレーキ機構が解除状態から制動状態に作動する。
よって、電源不良等の影響を受け難い機械的構造でもって、開閉体の閉鎖動作を障害物との接触により停止することができる。 Since the present invention is configured as described above, the following effects can be obtained.
According to the first invention, when the opening / closing body main body is closed, the winding body rotates while feeding the first string-like member, and the rotating force of the winding body also causes the shaft body to rotate in the same direction. Works. Therefore, the second string-like member is pulled by the outer peripheral portion of the shaft body.
Further, during the closing operation of the opening / closing body main body, when the movable seat plate comes into contact with the obstacle and the movable seat plate moves in the opening direction relative to the opening / closing body main body, the tension of the first string-like member loosens, and the first The string-like member is rewound onto the winding body. And the said rotational force which acted on the shaft body is cancelled | released by rotation of the winding body in the winding direction in that case. Therefore, the tension of the second string-like member is reduced, and the brake mechanism is operated from the released state to the braked state by the decrease in the tension.
Therefore, the closing operation of the opening / closing body can be stopped by contact with an obstacle with a mechanical structure that is not easily affected by a power failure or the like.

更に、第二の発明によれば、ブレーキ機構を作動性の良好な具体的態様とすることができる。   Furthermore, according to the second aspect of the invention, the brake mechanism can be set to a specific aspect with good operability.

更に、第三の発明によれば、開閉体本体の閉鎖動作中、可動座板が障害物に当接して相対的に開放方向へ移動すると、その可動座板の移動に連動して滑車部材も開放方向へ移動する。その際、第一紐状部材は、動滑車の原理により、滑車部材の移動量の２倍量、巻取体に巻き戻されることになる。よって、第二紐状部材の張力を効果的に低下させて、ブレーキ機構の作動を良好にすることができる。   Further, according to the third invention, during the closing operation of the opening / closing body, when the movable seat plate comes into contact with the obstacle and relatively moves in the opening direction, the pulley member is also interlocked with the movement of the movable seat plate. Move in the opening direction. At that time, the first string-like member is rewound onto the winding body by an amount twice as much as the moving amount of the pulley member according to the principle of the moving pulley. Therefore, the tension | tensile_strength of a 2nd string-like member can be reduced effectively and the action | operation of a brake mechanism can be made favorable.

更に、第四の発明によれば、仮に可動座板の幅方向において部分的に障害物が当接し、可動座板の開閉体幅方向の一方側が偏って開放方向へ移動した場合であっても、その偏って移動した可動座板により、開閉体幅方向へわたる揺動部材を押圧して揺動させるとともに、滑車部材を開放方向へ移動させることができる。   Further, according to the fourth aspect of the invention, even if an obstacle partially contacts in the width direction of the movable seat plate and one side of the movable seat plate in the opening / closing body width direction is biased and moves in the opening direction, The movable seat plate that moves in a biased manner can press and swing the swinging member extending in the opening / closing body width direction, and can move the pulley member in the opening direction.

第五の発明によれば、紐状部材の弛みによりブレーキ機構の作動が遅延したり鈍ったりするようなことを防ぐことができる。   According to the fifth aspect, it is possible to prevent the operation of the brake mechanism from being delayed or dull due to the slack of the string-like member.

第六の発明によれば、ブレーキ機構の復帰動作を、ダンパー手段によって低速に行うことができ、ひいては、自動復帰動作の安全性を向上することができる。   According to the sixth aspect of the invention, the return operation of the brake mechanism can be performed at a low speed by the damper means, and consequently the safety of the automatic return operation can be improved.

以下、本発明の実施の形態を図面に基づいて説明する。
本実施の形態は、住宅やビル、倉庫、工場、地下街、トンネル、車両の荷台等の躯体の開口部分や内部に配設され、前記開口部分を開閉したり、躯体内部の空間を仕切ったり開放したりするシャッター装置として適用可能であり、特に好ましい態様として、火災等の非常時に自動閉鎖されて火炎や煙の蔓延を防ぐ防火シャッター装置に適用した一例について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The present embodiment is arranged in or inside an opening part or inside of a housing such as a house, building, warehouse, factory, underground shopping center, tunnel, vehicle loading platform, etc. As an especially preferred embodiment, an example applied to a fire-proof shutter device that is automatically closed in the event of an emergency such as a fire to prevent the spread of flames and smoke will be described.

開閉装置１は、閉鎖方向端部をスライドさせて開閉動作する開閉体１０と、該開閉体１０の幅方向（図１の左右方向）の端部を囲み開閉方向へ案内するガイドレール２０と、開閉体１０を巻き取ったり繰出したりする巻取装置３０とを備え、もしも障害物Ｘが開閉体１０の開閉経路に存在した場合に、機械的な連動手段Ａとブレーキ機構４２の作動によって、開閉体１０の閉鎖動作を停止する。   The opening / closing device 1 includes an opening / closing body 10 that opens and closes by sliding an end portion in the closing direction, a guide rail 20 that surrounds and guides the opening / closing direction of the opening / closing body 10 in the width direction (left-right direction in FIG. 1), A winding device 30 for winding and unwinding the opening / closing body 10, and if the obstacle X is present in the opening / closing path of the opening / closing body 10, the mechanical interlocking means A and the brake mechanism 42 are operated to open and close The closing operation of the body 10 is stopped.

開閉体１０は、横長略矩形状の金属板を曲げ加工してなる所謂スラット１１ａを、上下に隣接する該スラット１１ａ，１１ａ間で回動するように複数連接することで開閉体本体１１を構成し、該開閉体本体１１の閉鎖方向端部側（図示例によれば下端側）に、縦断面略枠状の接続部材１２を介して、可動座板１３を接続している。   The opening / closing body 10 constitutes the opening / closing body main body 11 by connecting a plurality of so-called slats 11a formed by bending a horizontally-long substantially rectangular metal plate so as to rotate between the vertically adjacent slats 11a, 11a. And the movable seat board 13 is connected to the closing direction end part side (the lower end side according to the illustrated example) of the opening / closing body main body 11 via a connection member 12 having a substantially longitudinal frame shape.

接続部材１２は、下方側からの押圧力により揺動する揺動部材１２ａと、該揺動部材の先端部を受ける受部１２ｂと、該揺動部材１２ａに支持されて回動自在な滑車部材１２ｃとを具備し、上方から挿通された第一紐状部材ａ３の下端側を滑車部材１２ｃの下半部に掛け巻いて、内壁の上面に止着している。   The connecting member 12 includes a swinging member 12a that swings due to a pressing force from below, a receiving portion 12b that receives the tip of the swinging member, and a pulley member that is supported by the swinging member 12a and is rotatable. 12c, the lower end side of the first string-like member a3 inserted from above is wrapped around the lower half of the pulley member 12c, and is fixed to the upper surface of the inner wall.

揺動部材１２ａは、開閉体幅方向のどの位置であっても可動座板１３に対し当接するように、開閉体幅方向の略全長にわたって設けられ、接続部材１２の内壁面に枢支されている。
また、受部１２ｂは、上方へ揺動した際の揺動部材１２ａの先端側を受けるように、接続部材１２の内壁面に配設された突起である。
また、滑車部材１２ｃは、揺動部材１２ａにおける開閉体幅方向の一端側に回動自在に支持された動滑車状の回転体である。 The swing member 12a is provided over substantially the entire length in the opening / closing body width direction so as to abut against the movable seat plate 13 at any position in the opening / closing body width direction, and is pivotally supported by the inner wall surface of the connection member 12. Yes.
The receiving portion 12b is a protrusion disposed on the inner wall surface of the connecting member 12 so as to receive the tip side of the swinging member 12a when swinging upward.
The pulley member 12c is a moving pulley-like rotating body that is rotatably supported on one end side in the opening / closing body width direction of the swinging member 12a.

また、可動座板１３は、開閉体幅方向の略全長にわたって接続部材１２の下方へ突出する部材であり、前記接続部材１２に対し開閉体閉鎖方向へ所定量だけ自在にスライドするように接続されるとともに、揺動部材１２ａを下方から押圧して揺動させるように配設されている（図３（ａ）（ｂ）参照）。   The movable seat plate 13 is a member that protrudes below the connecting member 12 over substantially the entire length in the opening / closing body width direction, and is connected to the connecting member 12 so as to freely slide by a predetermined amount in the opening / closing body closing direction. In addition, the swinging member 12a is disposed so as to be swung by being pressed from below (see FIGS. 3A and 3B).

また、ガイドレール２０は、開閉体１０の幅方向の端部を囲む断面略コ字状の部材であり、開閉体１０によって着座される当接対象部位ｐ（例えば、床面や地面、枠部材等）と巻取装置３０との間にわたって配設されている。   The guide rail 20 is a member having a substantially U-shaped cross section that surrounds an end of the opening / closing body 10 in the width direction, and a contact target portion p (for example, a floor surface, the ground, or a frame member) seated by the opening / closing body 10. Etc.) and the winding device 30.

また、巻取装置３０は、下部側に開閉体１０を出没させるための開口部を形成した収納ケース３１内に、開閉体１０を巻き取ったり繰出したりする巻取軸３２と、該巻取軸３２をチェーン及びスプロケット等の動力伝達手段３３を介して駆動回転させたり制動したりする開閉機４０と、該開閉機４０を解除操作して開閉体１０を自重によって閉鎖動作させる自動閉鎖装置５０とを具備している。   In addition, the winding device 30 includes a winding shaft 32 that winds and unwinds the opening / closing body 10 in a storage case 31 in which an opening for allowing the opening / closing body 10 to appear and retract on the lower side, and the winding shaft. An opening / closing device 40 that rotates and brakes 32 via a power transmission means 33 such as a chain and a sprocket, and an automatic closing device 50 that releases the opening / closing device 40 to close the opening / closing body 10 by its own weight. It has.

開閉機４０は、例えば実開平０１−１１８０８４号公報に示される周知構造の開閉機に対し操作部４２ｆを設けてなる。
この開閉機４０は、図４に示すように、巻取軸３２の動力源となるモータ部４１と、該モータ部４１の回転を制動するブレーキ機構４２とを、ケーシング４３内に備えている。 The opening / closing machine 40 is provided with an operation unit 42f for a well-known opening / closing machine disclosed in, for example, Japanese Utility Model Laid-Open No. 01-118084.
As shown in FIG. 4, the opening / closing machine 40 includes a motor unit 41 serving as a power source for the winding shaft 32 and a brake mechanism 42 that brakes the rotation of the motor unit 41 in a casing 43.

モータ部４１は、直流モータまたは交流モータであり、その回転子４１ａの中心には駆動力及び／又は制動力を出力する出力軸４１ｂが固定され、該出力軸４１ｂの一端側（図３によれば左端側）の回転力を、動力伝達手段３３を介して巻取軸３２へ伝達するように構成してある。また、同出力軸４１ｂの他端側には、ブレーキ機構４２からの制動力を受けるように略円盤状のブレーキシュー４１ｃが固定されている。   The motor unit 41 is a direct current motor or an alternating current motor, and an output shaft 41b that outputs driving force and / or braking force is fixed to the center of the rotor 41a, and one end side of the output shaft 41b (see FIG. 3). In this case, the rotational force on the left end side is transmitted to the take-up shaft 32 via the power transmission means 33. A substantially disc-like brake shoe 41c is fixed to the other end side of the output shaft 41b so as to receive a braking force from the brake mechanism 42.

また、ブレーキ機構４２は、上記出力軸４１ｂに対し略直線状に並ぶように配置されたブレーキ軸４２ａと、該ブレーキ軸４２ａにおけるモータ部４１側に固定されて前記ブレーキシュー４１ｃに対し離脱可能に当接したブレーキドラム４２ｂと、該ブレーキドラム４２ｂをモータ部４１方向（図３によれば左方向）へ付勢するコイルスプリング４２ｃと、該コイルスプリング４２ｃの付勢力に抗してブレーキドラム４２ｂを吸引する電磁ソレノイド４２ｄと、同コイルスプリング４２ｃの付勢力に抗して手動でブレーキドラム４２ｂをブレーキシュー４１ｃから離間させるためのレバー部材４２ｅとを具備している。   The brake mechanism 42 is fixed to the brake shaft 42a arranged on the output shaft 41b in a substantially straight line, and is fixed to the motor portion 41 side of the brake shaft 42a so as to be detachable from the brake shoe 41c. The abutting brake drum 42b, a coil spring 42c that urges the brake drum 42b in the direction of the motor unit 41 (leftward according to FIG. 3), and the brake drum 42b against the urging force of the coil spring 42c. An electromagnetic solenoid 42d for suction and a lever member 42e for manually separating the brake drum 42b from the brake shoe 41c against the urging force of the coil spring 42c are provided.

ブレーキ軸４２ａは、適宜な回転抵抗を有する状態で回転可能であって、且つ軸方向へ所定量移動するように支持されている。   The brake shaft 42a can be rotated with an appropriate rotational resistance and is supported so as to move a predetermined amount in the axial direction.

また、ブレーキドラム４２ｂは、モータ部４１側のブレーキシュー４１ｃに対し当接したり離間したりする略円筒状に構成され、その外周に巻かれたチェーン４２ｇからの回転力により回転するように支持されるとともに、その回転が、ケーシング４３側の周知の回転抑制手段４２ｈから受ける抵抗によって抑制されるようになっている。
なお、チェーン４２ｇは、開閉体１０を手動で開閉できるように具備されているが、必要に応じて省くことも可能である。 The brake drum 42b is formed in a substantially cylindrical shape that comes into contact with or separates from the brake shoe 41c on the motor unit 41 side, and is supported so as to be rotated by a rotational force from a chain 42g wound around the outer periphery thereof. At the same time, the rotation is suppressed by the resistance received from the known rotation suppressing means 42h on the casing 43 side.
The chain 42g is provided so that the opening / closing body 10 can be manually opened / closed, but may be omitted if necessary.

また、レバー部材４２ｅは、一端側に作用する揺動力によって、ブレーキ軸４２ａを開閉機４０から引き離すように構成された略杆状の部材である。
より詳細に説明すれば、このレバー部材４２ｅは、ブレーキ軸４２ａを貫通させた板状部材からなり、ブレーキ軸４２ａと交差して一方へ突出する上側レバー部４２ｅ１と、その逆方向へ突出する下側レバー部４２ｅ２とから一体に構成されている。
上側レバー部４２ｅ１のブレーキ軸４２ａ側は、略く字状に曲げられることで上側支点部４２ｅ１ａが構成されている。同様にして、下側レバー部４２ｅ２のブレーキ軸４２ａ側も、略く字状に曲げられることで、下側支点部４２ｅ２ａが構成されている。 The lever member 42e is a substantially bowl-shaped member configured to pull the brake shaft 42a away from the switch 40 by a swinging force acting on one end side.
More specifically, the lever member 42e is composed of a plate-like member that penetrates the brake shaft 42a. The lever member 42e intersects the brake shaft 42a and protrudes in one direction, and the lower lever portion 42e projects in the opposite direction. It is comprised integrally with the side lever part 42e2.
On the brake shaft 42a side of the upper lever portion 42e1, an upper fulcrum portion 42e1a is configured by being bent into a substantially square shape. Similarly, the lower fulcrum portion 42e2a is configured by bending the lower lever portion 42e2 on the brake shaft 42a side into a substantially square shape.

上記レバー部材４２ｅによれば、例えば上側レバー部４２ｅ１の上端側が図示の右方向へ押された場合には、下側支点部４２ｅ２ａを支点にしたレバー部材４２ｅの揺動により、ブレーキ軸４２ａが反モータ部４１方向（図４の右方向）へ移動する。
また、同上側レバー部４２ｅ１の上端側が図示の左方向へ引かれた場合には、上側支点部４２ｅ１ａを支点とした上側レバー部４２ｅ１の揺動により、ブレーキ軸４２ａが右方向へ移動する。
また、下側レバー部４２ｅ２の下端側が右方向へ引かれた場合には、上側支点部４２ｅ１ａを支点とした下側レバー部４２ｅ２の揺動により、ブレーキ軸４２ａが右方向へ移動する。
また、下側レバー部４２ｅ２が左方向へ引かれた場合も、下側支点部４２ｅ２ａを支点とした下側レバー部４２ｅ２の揺動によりブレーキ軸４２ａが右方向へ移動する。 According to the lever member 42e, for example, when the upper end side of the upper lever portion 42e1 is pushed rightward in the drawing, the brake shaft 42a is counteracted by the swinging of the lever member 42e with the lower fulcrum portion 42e2a as a fulcrum. It moves in the direction of the motor unit 41 (right direction in FIG. 4).
Further, when the upper end side of the upper lever portion 42e1 is pulled leftward in the drawing, the brake shaft 42a moves rightward by the swinging of the upper lever portion 42e1 with the upper fulcrum portion 42e1a as a fulcrum.
Further, when the lower end side of the lower lever portion 42e2 is pulled rightward, the brake shaft 42a moves rightward by the swinging of the lower lever portion 42e2 with the upper fulcrum portion 42e1a as a fulcrum.
Even when the lower lever portion 42e2 is pulled leftward, the brake shaft 42a moves rightward by the swinging of the lower lever portion 42e2 with the lower fulcrum portion 42e2a as a fulcrum.

すなわち、上側レバー部４２ｅ１と下側レバー部４２ｅ２との内の何れかが、左右のどちら側に揺動した場合であっても、ブレーキ軸４２ａが右方向へ引かれて移動し、ブレーキ軸４２ａと一体的なブレーキドラム４２ｂがブレーキシュー４１ｃから離れ、ブレーキシュー４１ｃ及び出力軸４１ｂに作用していた制動力が解除されるようになっている。
なお、図４は、自動閉鎖装置５０が作動する前、つまりブレーキ解除する前の初期状態（制動状態）を示している。 That is, regardless of which of the upper lever portion 42e1 and the lower lever portion 42e2 swings to the left or right, the brake shaft 42a is pulled and moved to the right, and the brake shaft 42a The brake drum 42b integrated with the brake shoe 41c is separated from the brake shoe 41c, and the braking force acting on the brake shoe 41c and the output shaft 41b is released.
FIG. 4 shows an initial state (braking state) before the automatic closing device 50 operates, that is, before the brake is released.

また、上記構成の開閉機４０において、上記上側レバー部４２ｅ１の揺動端側には、該上側レバー部４２ｅ１を上方へ延設するようにして、操作部４２ｆが固定されている。この操作部４２ｆは、例えばボルト等からなる略棒状の部材である。   In the opening / closing device 40 having the above-described configuration, the operation portion 42f is fixed to the swing end side of the upper lever portion 42e1 so that the upper lever portion 42e1 extends upward. The operation unit 42f is a substantially rod-shaped member made of, for example, a bolt.

また、自動閉鎖装置５０は、開閉機４０のケーシング４３に固定されたケーシング５１内に、一端側を操作部４２ｆ方向（図４の右方向）へ突出させるとともに操作部４２ｆの揺動方向に沿ってスライドするように支持された押圧作動部材５２と、該押圧作動部材５２を操作部４２ｆ方向へスライドさせるモータ５３と、押圧作動部材５２の操作部４２ｆ方向へのスライドを逆方向への運動に変換するリンク部材５４とを具備している。   Further, the automatic closing device 50 has one end projecting in the direction of the operation portion 42f (right direction in FIG. 4) in the casing 51 fixed to the casing 43 of the opening / closing device 40 and along the swinging direction of the operation portion 42f. A pressing operation member 52 supported so as to slide, a motor 53 that slides the pressing operation member 52 in the direction of the operation portion 42f, and a slide operation of the pressing operation member 52 in the operation portion 42f direction in a reverse direction. And a link member 54 for conversion.

押圧作動部材５２は、上方を向く略凹凸状のラック部５２ａを有する。
モータ５３は、直流または交流の回転式電動機であり、その出力軸には、前記ラック部５２ａと噛み合うピニオン部５３ａを固定している。
リンク部材５４は、一端側に前記ラック部５２ａを枢支するとともに他端側に後述する第二紐状部材ａ３を枢支し、これら枢支箇所間の略中央部がケーシング５１に対し回動自在に支持されている。 The pressing operation member 52 has a substantially uneven rack portion 52a facing upward.
The motor 53 is a direct current or alternating current rotary electric motor, and a pinion portion 53a that meshes with the rack portion 52a is fixed to an output shaft thereof.
The link member 54 pivotally supports the rack portion 52a on one end side, and pivotally supports a second string-like member a3, which will be described later, on the other end side. It is supported freely.

上記構成の自動閉鎖装置５０によれば、図示しない制御部からモータ５３へ電力が供給され、ピニオン部５３ａが一方向（図４によれば反時計方向）へ回転すると、押圧作動部材５２が操作部４２ｆ方向へスライドするとともに、リンク部材５４他端側の逆方向へ揺動する。   According to the automatic closing device 50 configured as described above, when the electric power is supplied from the control unit (not shown) to the motor 53 and the pinion unit 53a rotates in one direction (counterclockwise according to FIG. 4), the pressing operation member 52 is operated. It slides in the direction of the part 42f and swings in the reverse direction on the other end side of the link member 54.

また、連動手段Ａは、開閉体１０の開放方向側の不動部位である収納ケース３１に対し回動可能に支持された軸体ａ１と、該軸体ａ１の周囲に回動可能に支持された巻取体ａ２と、前記軸体ａ１に対する前記巻取体ａ２の繰り出し方向の回転に抵抗を与えるロータリーダンパー手段（図示せず）と、該巻取体ａ２を前記軸体ａ１に対し巻き取り方向へ付勢する付勢手段（図示せず）と、該巻取体ａ２の外周部に一端側が巻かれるとともに、その他端側が可動座板１３の開放方向への移動に伴って張力を緩めるように揺動部材１２ａ及び滑車部材１２ｃを介して前記開閉体本体１１下端の接続部材１２に止着された第一紐状部材ａ３と、前記巻取体ａ２の繰り出し方向の回転に伴って引っ張られるように前記軸体ａ２の外周部に一端側が止着されるとともに他端側が自動閉鎖装置５０を介してブレーキ機構４２の操作部４２ｆに対し操作可能に連絡された第二紐状部材ａ４とを具備している。
そして、この連動手段Ａは、可動座板１３の開閉体本体１１に相対する開放方向への移動により、第一紐状部材ａ３を第二紐状部材ａ２に巻戻して第二紐状部材ａ４の張力を低下させ、その張力の低下により、ブレーキ機構４２を解除状態から制動状態にする。 Further, the interlocking means A is supported so as to be rotatable around the shaft body a1 and the shaft body a1 that is rotatably supported with respect to the storage case 31 that is a stationary part on the opening direction side of the opening / closing body 10. Winding body a2, rotary damper means (not shown) for giving resistance to rotation of the winding body a2 with respect to the shaft body a1, and winding direction of the winding body a2 with respect to the shaft body a1 One end side is wound around the outer peripheral portion of the winding body a2 and the other end side is loosened as the movable seat plate 13 moves in the opening direction. The first string-like member a3 fastened to the connecting member 12 at the lower end of the opening / closing body main body 11 via the swinging member 12a and the pulley member 12c, and the winding body a2 are pulled in accordance with the rotation in the feeding direction. One end side is fixed to the outer peripheral portion of the shaft body a2. Rutotomoni other end is provided with a second string member a4 which is operative communication with respect to the operation section 42f of the brake mechanism 42 through the self-closing device 50.
Then, the interlocking means A rewinds the first string-like member a3 to the second string-like member a2 by the movement of the movable seat plate 13 in the opening direction relative to the opening / closing body main body 11, and the second string-like member a4. The brake mechanism 42 is changed from the released state to the braked state by reducing the tension.

前記ロータリーダンパー装置としては、軸体と、該軸体の周りに支持されて回転する回転体とを備え、該回転体の一方向への回転に対し流体摩擦等による抵抗を与えるようにした所謂ワンウェイタイプのロータリーダンパー装置が用いられる。
また、前記付勢手段としては、例えばゼンマイバネや、コイルスプリング等が用いられる。 The rotary damper device includes a shaft body and a rotating body that is supported around the shaft body and rotates, so-called rotation resistance in one direction is imparted with resistance by fluid friction or the like. A one-way type rotary damper device is used.
As the biasing means, for example, a spring or a coil spring is used.

すなわち、本実施の形態では、前記ロータリーダンパー装置の軸体を図示の軸体ａ１として用いるとともに、前記ロータリーダンパー装置の回転体を図示の巻取体ａ２として用いることで、巻取体ａ２における繰り出し回転方向（図２における反時計方向）の回転に抵抗を与え、また、軸体ａ１と巻取体ａ２間に設けられる図示しない付勢手段によって、巻取体ａ２を巻き取り回転方向へ付勢している。
前記付勢手段の付勢力は、揺動部材１２ａ及び滑車部材１２ｃを強制的に上方へ揺動させてしまうことのないように、適宜に設定されている。 That is, in this embodiment, the shaft body of the rotary damper device is used as the shaft body a1 shown in the drawing, and the rotating body of the rotary damper device is used as the winding body a2 shown in the drawing, so that the winding body a2 is fed out. A resistance is given to rotation in the rotation direction (counterclockwise in FIG. 2), and the winding body a2 is biased in the winding rotation direction by a biasing means (not shown) provided between the shaft body a1 and the winding body a2. is doing.
The urging force of the urging means is appropriately set so as not to forcefully swing the swing member 12a and the pulley member 12c upward.

また、軸体ａ１は、その外周に、第二紐状部材ａ４を止着するための止着突起ａ１１と、当該軸体ａ１の回転を規制するための規制突起ａ１２とを、一体的に具備している。
止着突起ａ１１は、巻取体ａ２の繰り出し方向の回転に伴う軸体ａ１の回転により第二紐状部材ａ４を引っ張るように、第二紐状部材ａ４の一端側に止着されている。
また、規制突起ａ１２は、図示例によれば、軸体ａ１の外周において止着突起ａ１１に対し１８０度逆側に配置され、回転規制部材３１ａに当接することで、巻取体ａ２の巻き取り回転に伴う軸体ａ１の回転量（図示例によれば時計方向の回転量）を規制している。前記回転規制部材３１ａは、収納ケース３１等の不動部位に固定された部材であればよく、図示例によれば略角材状の部材としている。 Further, the shaft body a1 is integrally provided with a fastening projection a11 for fastening the second string-like member a4 and a regulation projection a12 for regulating the rotation of the shaft body a1 on the outer periphery thereof. is doing.
The fixing protrusion a11 is fixed to one end side of the second string member a4 so as to pull the second string member a4 by the rotation of the shaft body a1 accompanying the rotation of the winding body a2.
Further, according to the illustrated example, the restricting protrusion a12 is disposed 180 degrees opposite to the fixing protrusion a11 on the outer periphery of the shaft body a1, and comes into contact with the rotation restricting member 31a, thereby winding the take-up body a2. The amount of rotation of the shaft body a1 accompanying the rotation (the amount of rotation in the clockwise direction in the illustrated example) is regulated. The rotation restricting member 31a may be a member fixed to a stationary part such as the storage case 31 and is a substantially square member according to the illustrated example.

なお、規制突起ａ１２と回転規制部材３１ａにより軸体ａ１の回転量を規制する構成は、軸体ａ１が巻取体ａ２の巻き取り方向（図示の時計方向）へ回転して第二紐状部材ａ４の張力がなくなる寸前で、軸体ａ１の回転を規制することが好ましい。また、前記のように軸体ａ１の回転量を規制する構成は、図示例に限定されず、他の構造としてもよい。   The configuration in which the rotation amount of the shaft body a1 is regulated by the regulating projection a12 and the rotation regulating member 31a is such that the shaft body a1 rotates in the winding direction (clockwise direction in the drawing) of the winding body a2 and the second string-like member. It is preferable to restrict the rotation of the shaft body a1 just before the a4 tension disappears. Moreover, the structure which controls the rotation amount of the shaft body a1 as described above is not limited to the illustrated example, and may have another structure.

また、第一紐状部材ａ３は、本実施の形態の好ましい一例によれば金属製ワイヤーとしているが、可撓性を有する長尺状の部材であればよく、他例としては、帯状物や、鎖状物、紐等とすることも可能である。更に、この第一紐状部材ａ３の他例としては、導電性の材料とし、電線としての作用を兼ね備えた構成としてもよい。
この紐状部材ａ３の一端側は、巻取体ａ２の外周面に止着されて巻き取られ、その他端側は、滑車部材１２ｃの下半部に掛け巻かれて接続部材１２の上端面に止着されている Further, the first string-like member a3 is a metal wire according to a preferred example of the present embodiment, but may be a long member having flexibility. It is also possible to use a chain, a string or the like. Furthermore, as another example of the first string-like member a3, a conductive material may be used, which also serves as an electric wire.
One end of the string-like member a3 is fastened to the outer peripheral surface of the winding body a2, and the other end is wound around the lower half of the pulley member 12c and is wound on the upper end surface of the connecting member 12. Fastened

また、第二紐状部材ａ４は、紐状体ａ４１と、該紐状体ａ４１の中途部分に設けられた引張りバネａ４２とから構成され、その一端側が自動閉鎖装置５０のリンク部材５４上端側に止着されるとともに、他端側が軸体ａ１の止着突起ａ１１に止着されている。
紐状体ａ４１は、前記第一紐状部材ａ３と略同様に可撓性を有する長尺状の部材であればよく、好ましくは金属製ワイヤーとされる。
引張バネａ４２は、第二紐状部材ａ４の弛みを解消する程度の引張力に設定されている。より詳細に説明すれば、この引張りバネａ４２の引張力は、図２（ａ）の状態で第二紐状部材ａ４の弛みを解消した状態で、ブレーキ機構４２を解除操作する力（すなわちコイルスプリング４２ｃの付勢力）よりもやや小さくなるように設定されている。
つまり、図２（ａ）から図２（ｂ）の状態へ移行したり、図２（ｂ）の状態を維持するには、第二紐状部材ａ４（詳細には紐状体ａ４１及び引張バネａ４２）による引張力を、ブレーキ機構４２を解除操作する力（すなわちコイルスプリング４２ｃの付勢力）よりも、大きくする必要があるが、このようになるのは、例えば、第二紐状部材ａ４が軸体ａ１の止着突起ａ１１に引っ張られることに伴う引張バネａ４２の伸びによる付勢力の増加によるものであればよい。
なお、図示例によれば、紐状体ａ４１の中途箇所を切断して、その間に引張バネａ４２を介在する構成としているが、紐状体ａ４１の一方の端部に引張バネａ４２を接続した構成としてもよい。
また、引張バネａ４２は、第二紐状部材ａ４の弛みを許容できれば、省略することも可能である。 The second string-like member a4 is composed of a string-like body a41 and a tension spring a42 provided in the middle part of the string-like body a41, one end side of which is on the upper end side of the link member 54 of the automatic closing device 50. While being fixed, the other end is fixed to the fixing protrusion a11 of the shaft body a1.
The string-like body a41 may be a long member having flexibility in the same manner as the first string-like member a3, and is preferably a metal wire.
The tension spring a42 is set to a tensile force that can eliminate the slack of the second string-like member a4. More specifically, the tension force of the tension spring a42 is a force (that is, a coil spring) for releasing the brake mechanism 42 in a state where the slack of the second string-like member a4 is eliminated in the state of FIG. The biasing force of 42c is set to be slightly smaller.
That is, in order to shift from the state of FIG. 2A to the state of FIG. 2B or to maintain the state of FIG. 2B, the second string-like member a4 (specifically, the string-like body a41 and the tension spring) The tension force by a42) needs to be larger than the force for releasing the brake mechanism 42 (that is, the urging force of the coil spring 42c). This is because, for example, the second string-like member a4 has What is necessary is just to be due to an increase in the urging force due to the extension of the tension spring a42 that is caused by being pulled by the fastening protrusion a11 of the shaft body a1.
In addition, according to the example of illustration, it is set as the structure which cut | disconnects the middle part of the string-like body a41, and interposes the tension spring a42 in the meantime, The structure which connected the tension spring a42 to one edge part of the string-like body a41 It is good.
Further, the tension spring a42 can be omitted as long as the slack of the second string-like member a4 can be allowed.

次に、上記構成の開閉装置１について、その特徴的な作用効果を詳細に説明する（図２及び図３参照）。
先ず、防災信号のない通常状態では、図２（ａ）に示すように、ブレーキ機構４２がコイルスプリング４２ｃの付勢力によって制動状態に維持され、開閉体１０は全開状態で静止している。 Next, the characteristic effect of the switchgear 1 having the above-described configuration will be described in detail (see FIGS. 2 and 3).
First, in a normal state without a disaster prevention signal, as shown in FIG. 2A, the brake mechanism 42 is maintained in a braking state by the urging force of the coil spring 42c, and the opening / closing body 10 is stationary in a fully opened state.

そして、開閉装置１は、防災信号を受けると、図示しない制御部からの電力供給により自動閉鎖装置５０のモータ５３を回転させて、押圧作動部材５２を操作部４２ｆ方向へスライドさせる（図２（ｂ）参照）。
前記モータ５３への電力は、押圧作動部材５２の操作部４２ｆ方向へのスライドが完了すると、モータ５３の電源端子間が電気的に開放状態にされることで遮断される。すなわち、その後の押圧作動部材５２のスライドを、モータ５３によって規制しないようにしている。 When receiving the disaster prevention signal, the opening / closing device 1 rotates the motor 53 of the automatic closing device 50 by power supply from a control unit (not shown) to slide the pressing operation member 52 in the direction of the operation unit 42f (FIG. 2 ( b)).
When the pressing operation member 52 slides in the direction of the operation portion 42f, the electric power to the motor 53 is cut off by electrically opening the power supply terminals of the motor 53. That is, the subsequent slide of the pressing member 52 is not restricted by the motor 53.

押圧作動部材５２が操作部４２ｆ方向へスライドすると、押圧作動部材５２が操作部４２ｆを押圧揺動して解除操作し、開閉機４０の出力軸４１ｂがブレーキ機構４２から開放されて回動自在な状態となり、開閉体１０が自重により巻取軸３２から繰り出されて閉鎖動作をする。
なお、開閉体１０の自重による閉鎖動作は、開閉機４０に設けられた図示しない調速装置により、所定の速度を超えないように調整されている。 When the pressing operation member 52 slides in the direction of the operation portion 42f, the pressing operation member 52 presses and swings the operation portion 42f to release it, and the output shaft 41b of the opening / closing device 40 is released from the brake mechanism 42 and is rotatable. The opening / closing body 10 is drawn out from the take-up shaft 32 by its own weight and performs a closing operation.
Note that the closing operation due to the weight of the opening / closing body 10 is adjusted by a speed control device (not shown) provided in the opening / closing machine 40 so as not to exceed a predetermined speed.

この閉鎖動作中、巻取体ａ２は、第一紐状部材ａ３を繰り出しながら回転する。
そのため、軸体ａ１は、ロータリーダンパー手段を介して巻取体ａ２から回転力を受け、止着突起ａ１１により第二紐状部材ａ４を引っ張る（図３（ａ）参照）。
したがって、モータ５３への電力が遮断された状態であっても、押圧作動部材５２により操作部４２ｆを解除方向へ揺動させた状態が、第二紐状部材ａ４の張力によって維持されることになる。 During the closing operation, the winding body a2 rotates while feeding the first string-like member a3.
Therefore, the shaft body a1 receives a rotational force from the winding body a2 via the rotary damper means, and pulls the second string-like member a4 by the fastening protrusion a11 (see FIG. 3A).
Therefore, even when the power to the motor 53 is interrupted, the state in which the operating portion 42f is swung in the release direction by the pressing operation member 52 is maintained by the tension of the second string member a4. Become.

また、閉鎖動作中の開閉体１０の下端に障害物Ｘが当接した場合には、図３（ｂ）に示すように、接続部材１２に相対して開放方向へ移動した可動座板１３によって揺動部材１２ａが上方へ揺動し、この揺動部材１２ａの揺動に伴って滑車部材１２ｃが上方へ移動する。
したがって、第一紐状部材ａ３は、動滑車の原理により、滑車部材１２ｃの移動量の２倍量、巻取体ａ２に巻き戻されることになる。 Further, when the obstacle X comes into contact with the lower end of the opening / closing body 10 during the closing operation, as shown in FIG. 3B, the movable seat 13 moves in the opening direction relative to the connection member 12. The swing member 12a swings upward, and the pulley member 12c moves upward as the swing member 12a swings.
Therefore, the first string-like member a3 is rewound onto the winding body a2 by an amount twice as much as the moving amount of the pulley member 12c according to the principle of the moving pulley.

よって、巻取体ａ２が急速に巻き取り方向へ回転し、その回転に伴って、軸体ａ１も同回転方向へ回転する。そして、軸体ａ１は、規制突起ａ１２を回転規制部材３１ａに当接させて回転を停止する。
したがって、前記軸体ａ１の回転により第二紐状部材ａ４の張力が低下するため、操作部４２ｆがコイルスプリング４２ｃの付勢力によって元の状態に戻り、ブレーキ機構４２が出力軸４１ｂの回転を拘束した制動状態になる。そのため、巻取軸３２の回転が停止し、開閉体１０の閉鎖動作も停止する。
なお、このときモータ５３へは電力が供給されておらず、モータ５３の作動によってブレーキ機構４２が解除されることなはい。 Therefore, the winding body a2 is rapidly rotated in the winding direction, and the shaft body a1 is also rotated in the same rotation direction with the rotation. Then, the shaft body a1 stops the rotation by bringing the restricting protrusion a12 into contact with the rotation restricting member 31a.
Therefore, since the tension of the second string member a4 is reduced by the rotation of the shaft body a1, the operation portion 42f is returned to the original state by the urging force of the coil spring 42c, and the brake mechanism 42 restrains the rotation of the output shaft 41b. Will be in the braking state. Therefore, the rotation of the winding shaft 32 is stopped, and the closing operation of the opening / closing body 10 is also stopped.
At this time, no electric power is supplied to the motor 53, and the brake mechanism 42 is not released by the operation of the motor 53.

その後、障害物Ｘが取り除かれる等して、可動座板１３が相対的に閉鎖方向（図示の下方）へ移動した場合には、図３に示す（ｂ）状態から（ａ）状態へと、状態が変化することになる。
すなわち、可動座板１３の下降により揺動部材１２ａ及び滑車部材１２ｃも下方へ移動し、その移動量の２倍量、第一紐状部材ａ３が巻取体ａ２から繰り出されることになる。そのため、巻取体ａ２の繰り出し方向の回転に伴って、軸体ａ１も同方向へ回転して第二紐状部材ａ４を引っ張る。
したがって、図３（ａ）に示すように、第二紐状部材ａ４の引張り方向と逆の方向へスライドする押圧作動部材５２より操作部４２ｆが押圧され、ブレーキ機構４２が解除状態になり、開閉体１０の閉鎖動作が再開する。 Thereafter, when the movable seat 13 is relatively moved in the closing direction (downward in the figure), for example, by removing the obstacle X, the state changes from the (b) state to the (a) state shown in FIG. The state will change.
That is, the swinging member 12a and the pulley member 12c are also moved downward by the lowering of the movable seat plate 13, and the first string-like member a3 is fed out of the winding body a2 by twice the amount of movement. Therefore, as the winding body a2 rotates in the feeding direction, the shaft body a1 also rotates in the same direction and pulls the second string-like member a4.
Accordingly, as shown in FIG. 3 (a), the operating portion 42f is pressed by the pressing operation member 52 that slides in the direction opposite to the pulling direction of the second string-like member a4, and the brake mechanism 42 is released, and is opened and closed. The closing operation of the body 10 resumes.

なお、上記実施の形態では、滑車部材１２ｃの回転軸の方向を開閉体幅方向とした、他例としては、滑車部材１２ｃの回転軸の方向を開閉体厚さ方向や、開閉体厚さ方向に傾斜した斜め方向等とすることも可能である。
また、図示例によれば、動滑車として単一の滑車部材１２ｃを具備した構成としているが、他例としては、動滑車の原理が二重、三重、それ以上に作用するように、定滑車を介して動滑車を複数設けた構成とすることも可能である。 In the above embodiment, the direction of the rotation axis of the pulley member 12c is the opening / closing body width direction. As another example, the direction of the rotation axis of the pulley member 12c is the opening / closing body thickness direction or the opening / closing body thickness direction. It is also possible to adopt an oblique direction or the like inclined in the direction.
Further, according to the illustrated example, a single pulley member 12c is provided as a moving pulley. However, as another example, a fixed pulley is used so that the principle of the moving pulley acts double, triple, or more. It is also possible to adopt a configuration in which a plurality of moving pulleys are provided via the.

次に、自動閉鎖装置５０を他の態様のものとした実施の形態について説明する。
図５に示す自動閉鎖装置５０’は、上記自動閉鎖装置５０からモータ５３を省くとともに、ブレーキ機構４２における下側レバー部４２ｅ２下端側の略Ｌ字状に曲げられた部分に、引き手部材４２ｇを吊り下げた構成としている。
引き手部材４２ｇは、図示例によれば可撓性の紐状体の下端に環状部材を止着した構成としているが、ワイヤーや、その他の紐状部材、帯状部材、あるいはレバー部材４２ｅに対し吊持された棒状部材等であってもよい。 Next, an embodiment in which the automatic closing device 50 has another aspect will be described.
The automatic closing device 50 ′ shown in FIG. 5 omits the motor 53 from the automatic closing device 50, and has a pulling member 42g on a portion bent in a substantially L shape on the lower end side of the lower lever portion 42e2 of the brake mechanism 42. The structure is suspended.
According to the illustrated example, the pulling member 42g has a structure in which an annular member is fixed to the lower end of the flexible string-like body. It may be a rod-like member that is suspended.

而して、図５に示す態様によれば、引き手部材４２ｇが下方へ引かれると、開閉機４０内部でブレーキ機構４２が解除状態となり、開閉体１０が自重によって繰り出されることになる。
したがって、巻取体ａ２が第一紐状部材ａ３を繰り出しながら回転し、その回転に伴って軸体ａ１も同方向へ回転し、第二紐状部材ａ４が引っ張られる。
よって、仮に引き手部材４２ｇに対する下方への引張力が開放された後であっても、ブレーキ機構４２の解除状態、及び開閉体１０の自重落下状態を維持することができる。 Thus, according to the embodiment shown in FIG. 5, when the pulling member 42g is pulled downward, the brake mechanism 42 is released in the opening / closing device 40, and the opening / closing body 10 is drawn out by its own weight.
Therefore, the winding body a2 rotates while feeding out the first string-like member a3, and along with the rotation, the shaft body a1 also rotates in the same direction, and the second string-like member a4 is pulled.
Therefore, even after the downward pulling force on the pulling member 42g is released, it is possible to maintain the released state of the brake mechanism 42 and the falling state of the opening / closing body 10 by its own weight.

また、閉鎖動作中の開閉体１０の下端に障害物Ｘが当接した場合には、上述した態様と略同様に、可動座板１３の相対的な開放方向への移動に機械的に連動して、ブレーキ機構４２が解除状態から制動状態になる（図５（ａ）（ｂ）参照）。
後に、障害物Ｘが除去された場合も、上述した態様と略同様に、可動座板１３の相対的な閉鎖方向への移動に機械的に連動して、ブレーキ機構４２が制動状態（図５（ｂ）に示す状態）から解除状態（図５（ａ）に示す状態）になり、開閉体１０の自重による閉鎖動作が再開する。 Further, when the obstacle X comes into contact with the lower end of the opening / closing body 10 during the closing operation, it is mechanically interlocked with the movement of the movable seat plate 13 in the relative opening direction in substantially the same manner as described above. Thus, the brake mechanism 42 changes from the released state to the braked state (see FIGS. 5A and 5B).
Later, when the obstacle X is removed, the brake mechanism 42 is in a braking state (FIG. 5) in a mechanically interlocked manner with the movement of the movable seat plate 13 in the relative closing direction, in substantially the same manner as described above. The state shown in (b)) is changed to the released state (the state shown in FIG. 5A), and the closing operation due to the weight of the opening / closing body 10 is resumed.

また、図６に示す自動閉鎖装置６０は、上述した自動閉鎖装置５０に対し、ブレーキ機構４２の解除動作に抵抗を与えるダンパー手段６１を付加した構成としている。
ダンパー手段６１は、ケーシング５１に固定されたシリンダー６１ａ内に進退可能にピストン６１ｂを備えた周知のダンパー装置であり、ピストン６１ｂに対し気体圧又は液体圧による抵抗を与えることで、ピストン６１ｂの移動抵抗が、後退時（図示における左方向への移動時）よりも前進時に大きくなるようにしている。ピストン６１ｂの先端側はリンク部材５４の下端側に枢支される。 Further, the automatic closing device 60 shown in FIG. 6 has a configuration in which a damper means 61 for adding resistance to the releasing operation of the brake mechanism 42 is added to the automatic closing device 50 described above.
The damper means 61 is a well-known damper device having a piston 61b that can move forward and backward in a cylinder 61a fixed to the casing 51. The damper 61 is moved by moving the piston 61b by applying resistance to the piston 61b by gas pressure or liquid pressure. The resistance is set to be larger when moving forward than when moving backward (when moving in the left direction in the figure). The front end side of the piston 61 b is pivotally supported on the lower end side of the link member 54.

而して、図６に示す自動閉鎖装置６０によれば、開閉体１０の閉鎖方向端部に当接していた障害物Ｘが除去されて、可動座板１３が相対的に閉鎖方向へ移動した場合、すなわち図６の（ａ）状態から（ｂ）状態に変化した場合に、押圧作動部材５２によって操作部４２ｆを解除操作方向へ揺動させる動作を、ダンパー手段６１の抵抗により低速に行うことができ、ひいては、自動復帰動作の安全性を向上することができる。   Thus, according to the automatic closing device 60 shown in FIG. 6, the obstacle X that has been in contact with the end of the opening / closing body 10 in the closing direction is removed, and the movable seat plate 13 moves relatively in the closing direction. In this case, that is, when the state changes from the state (a) to the state (b) in FIG. 6, the operation of swinging the operation portion 42 f in the release operation direction by the pressing operation member 52 is performed at a low speed by the resistance of the damper means 61. As a result, the safety of the automatic return operation can be improved.

なお、ダンパー手段６１は、図６に示す態様に限定されるものでなく、例えば、図７に示す自動閉鎖装置６０’のように、ロータリー式のダンパー手段６２を具備するようにしてもよい。
ダンパー手段６２は、周知構造のワンウェイタイプのロータリーダンパー装置であり、軸体６２ａの一方向（図示例によれば反時計方向）の回転に抵抗を与えるように構成してある。
而して、図７に示す態様によれば、開閉体１０の閉鎖方向端部に当接していた障害物Ｘが除去されて、可動座板１３が相対的に閉鎖方向へ移動した場合、すなわち図７の（ａ）状態から（ｂ）状態に変化した場合に、押圧作動部材５２によって操作部４２ｆを解除操作方向へ揺動させる動作を、ダンパー手段６２の抵抗により低速に行うことができ、ひいては、自動復帰動作の安全性を向上することができる。 Note that the damper means 61 is not limited to the mode shown in FIG. 6 and may be provided with a rotary damper means 62, for example, like an automatic closing device 60 ′ shown in FIG.
The damper means 62 is a one-way type rotary damper device having a well-known structure, and is configured to provide resistance to rotation in one direction (counterclockwise in the illustrated example) of the shaft body 62a.
Thus, according to the embodiment shown in FIG. 7, when the obstacle X that has been in contact with the end of the opening / closing body 10 in the closing direction is removed and the movable seat 13 moves relatively in the closing direction, When the state changes from the state (a) to the state (b) in FIG. 7, the operation of swinging the operation portion 42 f in the release operation direction by the pressing operation member 52 can be performed at a low speed by the resistance of the damper means 62. As a result, the safety of the automatic return operation can be improved.

なお、上記実施の形態によれば、開閉体開放方向へ移動する揺動部材１２ａ及び滑車部材１２ｃによって、第一紐状部材ａ３を緩めて巻取体ａ２に巻き戻すようにしたが、他例としては、第一紐状部材ａ３の下端側を可動座板１３に止着し、可動座板１３の開放方向への移動により第一紐状部材ａ３が緩んで巻取体ａ２に巻き戻されるようにすることも可能である。   In addition, according to the said embodiment, although the 1st string-like member a3 was loosened and rewinded to the winding body a2 by the rocking | fluctuation member 12a and pulley member 12c which move to an opening-and-closing body opening direction, For example, the lower end side of the first string-like member a3 is fixed to the movable seat plate 13, and the first string-like member a3 is loosened by the movement of the movable seat plate 13 in the opening direction and is rewound onto the winding body a2. It is also possible to do so.

また、上記実施の形態によれば、可動座板１３が開放方向へ移動したことを機械的な連動手段Ａのみによって伝達する構成としているが、他例としては、接続部材１２内に接触式または非接触式スイッチを設け、該スイッチを可動座板１３の上昇に伴う揺動部材１２ａの移動により作動させ、該スイッチの出力信号に応じて障害物Ｘを感知し制御動作を行うように、電気制御方式の装置を併設するようにしてもよい。更に、このような構成では、第一紐状部材ａ３及び／又は第二紐状部材ａ４を導電体（具体的には電線等）とし、前記スイッチの出力信号を導電体である前記第一紐状部材ａ３及び／又は第二紐状部材ａ４を介して図示しない制御部へ電気的に伝送するようにしてもよい。   Moreover, according to the said embodiment, it is set as the structure which transmits only the mechanical interlocking means A that the movable seat board 13 moved to the open direction. A non-contact type switch is provided, and the switch is operated by the movement of the swinging member 12a as the movable seat 13 is raised, so that the obstacle X is detected according to the output signal of the switch and the control operation is performed. A control system device may be provided. Further, in such a configuration, the first string-like member a3 and / or the second string-like member a4 is a conductor (specifically, an electric wire or the like), and the output signal of the switch is the conductor. You may make it electrically transmit to the control part which is not shown in figure via the shape member a3 and / or the 2nd string-like member a4.

また、図６及び図７に示す態様は、図２に示す自動閉鎖装置５０に対しダンパー手段６１又は６２を付加した構成としているが、図５に示す自動閉鎖装置５０’に対しても同様にダンパー手段６１又は６２を付加することが可能なのは勿論である。   Moreover, although the aspect shown in FIG.6 and FIG.7 is set as the structure which added the damper means 61 or 62 with respect to the automatic closing apparatus 50 shown in FIG. 2, it is similarly applied also to automatic closing apparatus 50 'shown in FIG. Of course, the damper means 61 or 62 can be added.

また、上記実施の形態において、開閉機４０からモータ部４１の回転子４１ａや固定子等を省き（出力軸４１ｂは省かない）、開閉体１０が手動で開放動作され自重により閉鎖動作される構成とすることも可能である。   Moreover, in the said embodiment, the rotor 41a, the stator, etc. of the motor part 41 are excluded from the opening / closing machine 40 (the output shaft 41b is not omitted), and the opening / closing body 10 is manually opened and closed by its own weight. It is also possible.

本発明に係わる開閉装置の一例を示す正面図である。It is a front view which shows an example of the switchgear concerning this invention. 同開閉装置の作動状態を示す模式図であり、（ａ）は開閉体が全開された通常状態を示し、（ｂ）は自動閉鎖装置の作動により開閉体を閉鎖動作させている状態を示す。It is a schematic diagram which shows the operation state of the switchgear, (a) shows the normal state in which the open / close body is fully opened, and (b) shows the state in which the open / close body is closed by the operation of the automatic closing device. 同開閉装置の作動状態を示す模式図であり、（ａ）は開閉体が閉鎖動作している状態を示し、（ｂ）はブレーキ機構が制動状態になり開閉体の自動閉鎖を停止した状態を示す。It is a schematic diagram which shows the operating state of the switchgear, (a) shows the state which the opening / closing body is closing operation, (b) shows the state which stopped the automatic closing of the opening / closing body by the brake mechanism being in a braking state. Show. 同開閉装置に用いられる開閉機及び自動閉鎖装置の一例を示す構造図であり、出力軸を制動した状態を示している。It is structural drawing which shows an example of the switch used for the switchgear, and an automatic closing device, and has shown the state which braked the output shaft. 本発明に係わる開閉装置の他例を示す模式図であり、（ａ）は自動閉鎖装置の作動により開閉体を閉鎖動作させている状態を示し、（ｂ）はブレーキ機構が制動状態になり開閉体の閉鎖動作を停止した状態を示す。It is a schematic diagram which shows the other example of the switchgear concerning this invention, (a) shows the state which is operating the closing mechanism by the action | operation of an automatic closing device, (b) is a brake mechanism in a braking state, and opens and closes The state which stopped the closing operation of the body is shown. 本発明に係わる開閉装置の他例を示す模式図であり、（ａ）はブレーキ機構が制動状態になり開閉体の閉鎖動作を停止した状態を示し、（ｂ）はブレーキ機構の制動状態が解除され開閉体の閉鎖動作を再開した状態を示す。It is a schematic diagram which shows the other examples of the switchgear concerning this invention, (a) shows the state which the brake mechanism became a braking state and stopped the closing operation of an opening-and-closing body, (b) released the braking state of a brake mechanism. The closed state of the opening / closing body is resumed. 本発明に係わる開閉装置の他例を示す模式図であり、（ａ）はブレーキ機構が制動状態になり開閉体の閉鎖動作を停止した状態を示し、（ｂ）はブレーキ機構の制動状態が解除され開閉体の閉鎖動作を再開した状態を示す。It is a schematic diagram which shows the other examples of the switchgear concerning this invention, (a) shows the state which the brake mechanism became a braking state and stopped the closing operation of an opening-and-closing body, (b) released the braking state of a brake mechanism. The closed state of the opening / closing body is resumed.

符号の説明Explanation of symbols

１：開閉装置
１０：開閉体
１１：開閉体本体
１２：接続部材
１２ａ：揺動部材
１２ｃ：滑車部材
１３：可動座板
２０：ガイドレール
４０：開閉機
４２：ブレーキ機構
４２ｆ：操作部
５０，５０’，６０，６０’：自動閉鎖装置
Ａ：連動手段
ａ１：軸体
ａ２：巻取体
ａ３：第一紐状部材
ａ４：第二紐状部材
ａ４２：引張バネ DESCRIPTION OF SYMBOLS 1: Opening and closing device 10: Opening and closing body 11: Opening and closing body main body 12: Connection member 12a: Swing member 12c: Pulley member 13: Movable seat plate 20: Guide rail 40: Opening and closing machine 42: Brake mechanism 42f: Operation part 50, 50 ', 60, 60': Automatic closing device A: Interlocking means a1: Shaft body a2: Winding body a3: First string member a4: Second string member a42: Tension spring

Claims (6)

スライドしながら閉鎖動作可能な開閉体本体と、該開閉体本体の閉鎖方向端部に接続されて該開閉体本体に相対して開放方向へ移動可能な可動座板と、前記開閉体本体の閉鎖動作を制動したり該制動状態を解除したりするブレーキ機構とを備えた開閉装置において、
前記開閉体本体の開放方向側の不動部位に回動可能に支持された軸体と、該軸体の周囲に回動可能に支持された巻取体と、前記軸体に対する前記巻取体の繰り出し方向の回転に抵抗を与えるロータリーダンパー手段と、該巻取体を前記軸体に対し巻き取り方向へ付勢する付勢手段と、該巻取体の外周部に一端側が巻かれるとともに、その他端側が前記可動座板の開放方向への移動に伴って張力を緩めるように前記開閉体本体又は前記可動座板に止着された第一紐状部材と、前記巻取体の繰り出し方向の回転に伴って引っ張られるように前記軸体の外周部に一端側が止着されるとともに他端側が前記ブレーキ装置に対し操作可能に連絡された第二紐状部材とを具備し、
前記可動座板の前記開閉体本体に相対する開放方向への移動により、前記第一紐状部材を前記巻取体に巻戻して前記第二紐状部材の張力を低下させ、その張力の低下により、前記ブレーキ機構を解除状態から制動状態にするようにしたことを特徴とする開閉装置。 An opening / closing body main body that can be closed while sliding, a movable seat plate that is connected to the closing direction end of the opening / closing body main body and is movable in an opening direction relative to the opening / closing body main body, and closing the opening / closing body main body In a switching device provided with a brake mechanism that brakes the operation or releases the braking state,
A shaft body rotatably supported by an immovable portion on the opening direction side of the opening / closing body main body, a winding body rotatably supported around the shaft body, and the winding body with respect to the shaft body Rotary damper means for providing resistance to rotation in the feeding direction, biasing means for biasing the winding body in the winding direction with respect to the shaft body, one end side being wound around the outer peripheral portion of the winding body, and others The first string-like member fixed to the opening / closing body body or the movable seat plate so that the end side loosens the tension along with the movement of the movable seat plate in the opening direction, and rotation of the winding body in the feeding direction A second string-like member having one end side fixed to the outer peripheral portion of the shaft body so as to be pulled along with the other end side operably connected to the brake device;
By moving the movable seat plate in the opening direction relative to the opening / closing body body, the first string-like member is rewound onto the winding body to reduce the tension of the second string-like member, and the tension is reduced. Thus, the opening and closing device is characterized in that the brake mechanism is changed from the released state to the braked state. 前記ブレーキ機構は、前記開閉体本体の閉鎖動作に連動して回転する出力軸と、付勢部材によって付勢されて前記出力軸に係合するブレーキ軸と、該ブレーキ軸を前記出力軸から離脱するために動かされる操作部とを備え、
第二紐状部材の前記他端側を前記操作部に連絡し、前記巻取体の繰り出し方向の回転に伴って上昇する第二紐状部材の張力によって前記操作部を離脱操作方向へ作動させ、同巻取体の巻き取り方向の回転に伴って第二紐状部材の張力が低下した際には前記付勢部材の付勢力によって前記操作部を係合操作方向へ作動させるようにしたことを特徴とする請求項１記載の開閉装置。 The brake mechanism includes an output shaft that rotates in conjunction with the closing operation of the opening / closing body, a brake shaft that is biased by a biasing member to engage the output shaft, and the brake shaft that is detached from the output shaft. And an operation unit that is moved to
The other end side of the second string-like member is connected to the operation part, and the operation part is operated in the detachment operation direction by the tension of the second string-like member that rises as the winding body rotates in the feeding direction. When the tension of the second string-like member decreases with the rotation of the winding body in the winding direction, the operation portion is operated in the engagement operation direction by the urging force of the urging member. The switchgear according to claim 1. 前記開閉体本体又は前記可動座板に、前記可動座板と連動して開閉体開放方向へ移動するように滑車部材を支持し、
前記第一紐状部材の前記他端側を前記滑車部材の下半部に掛け巻いて前記開閉体本体に止着したことを特徴とする請求項１又は２記載の開閉装置。 The pulley member is supported on the opening / closing body main body or the movable seat plate so as to move in the opening / closing body opening direction in conjunction with the movable seat plate,
The opening / closing apparatus according to claim 1 or 2, wherein the other end side of the first string-like member is wound around a lower half of the pulley member and fixed to the opening / closing body main body. 前記開閉体本体には相対的に開放方向へ移動した際の前記可動座板に押圧されて揺動するように開閉体幅方向へわたる揺動部材が支持され、この揺動部材には前記滑車部材が支持されていることを特徴とする請求項３記載の開閉装置。   A swinging member extending in the width direction of the opening / closing body is supported on the opening / closing body main body so as to swing by being pressed by the movable seat plate when moved relative to the opening direction. The switchgear according to claim 3, wherein the member is supported. 第二紐状部材を引っ張って該第二紐状部材の弛みを防ぐ引張バネを具備したことを特徴とする請求項１乃至４何れか１項記載の開閉装置。   The switchgear according to any one of claims 1 to 4, further comprising a tension spring that pulls the second string-like member to prevent the second string-like member from loosening. 上記ブレーキ機構における解除動作に抵抗を与えるダンパー手段が具備されていることを特徴とする請求項１乃至５何れか１項記載の開閉装置。   6. The switchgear according to claim 1, further comprising damper means for providing resistance to a release operation in the brake mechanism.
JP2007043863A 2007-02-23 2007-02-23 Switchgear Active JP4909122B2 (en)

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