JP4097346B2

JP4097346B2 - Folding door deployment method

Info

Publication number: JP4097346B2
Application number: JP04207799A
Authority: JP
Inventors: 一敏渡辺; 良市佐々木
Original assignee: Nitto Kohki Co Ltd
Current assignee: Nitto Kohki Co Ltd
Priority date: 1999-02-19
Filing date: 1999-02-19
Publication date: 2008-06-11
Anticipated expiration: 2019-02-19
Also published as: JP2000240348A

Description

【０００１】
【発明の属する技術分野】
この発明は、複数枚のドアを横並びに連結し、普段は折り畳んで収納しておくととともに、非常時には展開して廊下等の所定の場所を閉鎖する折りドアに係り、特に展開した各ドアのねじれや傾きを防止する折りドアの展開方法に関するものである。
【０００２】
【従来の技術】
普段は（壁側の）戸袋に折り畳んで収納しておくととともに、火災等の非常時には展開して廊下等の所定の場所を閉鎖する防火用折りドアが開発され使用されている。
【０００３】
また、この折りドアには、普段は折り畳んで電磁レリーズで戸袋内に収納しておくために各ドアを互いに結合一体化するとともに、非常時には電磁レリーズにより折り畳み状態から解除されてクローザで展開させようにした各ドアを、（防炎・延焼防止等のために所定の場所、例えば廊下等を閉じるために）結合状態から開放するロック装置が開発され使用されている（このロック装置についての詳細は、実用新案登録第１８７４７５４号公報を参照されたい）。
【０００４】
例えば図６に示すように、このロック装置１０には、第１ドアＡ側のロック部材（図略）と、このロック部材を係合ロックする第２ドアＢ側のフック部材（図略）とを備えている。一方、各ドアは、折り畳まれこのロック装置１０で一体に結合された状態のまま電磁レリーズ１１により第２ドアＢ側が保持されて戸袋１２内にまとめて収納されている。
【０００５】
また、非常時には、先ず、電磁レリーズ１１の作動によって第２ドアＢの保持状態が解除され、第１ドアＡに設けたクローザａの閉扉力で第１ドアＡが（第２ドアＢを折り畳み状態で一体に結合させたまま）戸袋から解放され廊下等を閉じていく方向に展開する。
【０００６】
その後、図７に示すように、第１ドアＡが完全展開する直前において、（例えばロック装置の一部が戸当たりの上枠等に接触する等して）ロック部材とフック部材との係合が解除される。その結果、第２ドアＢに設けたクローザｂの閉扉力により、第２ドアＢが閉鎖動作を始める。このようにして、最終的には、第２ドアＢが完全に展開した図８の状態となり、廊下等を完全に閉鎖することができる。
【０００７】
【発明が解決しようとする課題】
ところで、通常一般に、ドアにあっては、吊元のがた等に起因した傾きが戸先側に多少発生するものであるが、特にこのような折りドアにあっては、その傾きが増幅され、極端な場合にはドアを完全には閉じきれずに防災上大きな問題となることがある。
【０００８】
即ち、これは、例えば図９に示すように、第１ドアＡを完全に展開した後、この第１ドアＡに対して第２ドアＢが特に９０度開いた状態のときには、第１ドアＡの一方の面に第２ドアＢの荷重により大きな捩じれ力が発生している。即ち、同図において、第２ドアＢの自重Ｗがモーメントとして第１ドアＡの上下部には、図示する方向の力Ｆ，Ｆ´が作用するので、第１ドアＡの戸先側は図１０に示すように、大きく傾くことがある。その結果、第２ドアＢの戸先が床面に接触して閉鎖できない虞れがある。ところが、この第１ドアＡの下端側には戸当りがない場合、この傾きを防止することは難しい。
また、このような問題は、設置当初に発生がみられなくとも、長期間使用するにつれて顕著に現れてくる場合もあり、いざというときに役に立たず、大きな火災を招くことも考えられる。
【０００９】
そこで、この発明は、上記した事情に鑑み、折りドアの開扉時（展開）のドアの捩じれを防止することができる折りドアの展開方法を提供することを目的とするものである。
【００１０】
【課題を解決するための手段】
上記目的を達成するため本発明は、第１ドア（Ａ）側のロック部材と、このロック部材を係合ロックする第２ドア（Ｂ）側のフック部材とでロック装置を構成し、各ドア（Ａ）（Ｂ）は、折り畳まれこのロック装置で一体に結合された状態のまま電磁レリーズにより第２ドア（Ｂ）側が保持されて戸袋内にまとめて収納され、非常時には、電磁レリーズの作動によって第２ドア（Ｂ）の保持状態が解除され、第１ドア（Ａ）に設けたクローザの閉扉力で第１ドア（Ａ）が第２ドア（Ｂ）を折り畳み状態で一体に結合させたまま戸袋から解放され廊下を閉じていく方向に展開し、その後、第１ドア（Ａ）が完全展開する直前において、ロック装置が作動してロック部材とフック部材との係合が解除され、その結果、第２ドア（Ｂ）に設けたクローザの閉扉力により、第２ドア（Ｂ）が閉鎖動作を始め、最終的には、第２ドア（Ｂ）が完全に展開した状態において、廊下を閉鎖することができるようにした折りドアの展開方法において、折り畳み時に第１ドア（Ａ）のハウジング（２）に収納されたストップ部材（１）を第２ドア（Ｂ）に設けたホールド部材（３）で降下するのを防止するように保持し、第１ドア（Ａ）が閉じた後、第２ドア（Ｂ）側が展開し始めて第２ドア（Ｂ）側が第１ドア（Ａ）側から離間することによりホールド部材（３）がストップ部材（１）から離間してストップ部材（１）が降下して廊下の床面に楔状に当接し、第１ドア（Ａ）を保持させた後に第２ドア（Ｂ）がさらに展開して廊下を閉鎖するようにした。
【００１１】
【発明の実施の形態】
以下、この発明の好適な実施例について添付図面を参照しながら説明する。
図１はこの発明に係るストッパー装置と折りドア（第１ドアＡ及び第２ドアＢからなるが、３枚以上で構成してもよい）の捩じれ防止方法を示すものである。
この発明に係る捩じれ防止方法は、第１ステップＳ１から第５ステップＳ５で構成される折りドアによる廊下（通路等でもよい）閉鎖動作のうち、特に第３ステップＳ３及び第４ステップＳ４において適用されている。
【００１２】
第１ステップＳ１では、火災等の異常事態が発生すると、これを検知した電磁レリーズが作動し、戸袋での第２ドアＢ側の保持動作を解除する。
第２ステップＳ２では、第１ステップＳ１において電磁レリーズによる第２ドアＢ側の解放により、この第２ドアＢ側及びこの第２ドアＢ側と一体に結合されている第１ドアＡが戸袋から抜け出して一体に展開する。この状態までは、図２に示すように、ストップ部材（ストッパー装置）１が第１ドアＡ側のハウジング２に収納されている。
【００１３】
第３ステップＳ３では、第１ドアＡ側が９０度回転して完全に展開し終わる（従来例での図７参照）と、ロック装置が始動して第１ドアＡ側及び第２ドアＢ側の結合状態が解除される。これにより、第２ドアＢ側が展開を始める。
第４ステップＳ４では、第２ドアＢ側が展開し始めると、この第２ドアＢ側が第１ドアＡ側から離間することにより、図３に示すように、第２ドアＢ側のホールド部材３がストップ部材１から離間するから、第１ドアＡ側からストップ部材１が降下して床面Ｆに楔状に当接し、突っかい棒のように作用して第１ドアＡ側の捩じれを防止する。これにより、特に図４に示すように第２ドアＢ側が第１ドアＡ側から９０度開いた状態の場合に、大きな捩じれ力が第１ドアＡ側に作用しても、このストップ部材１がこれを阻止する。
なお、本発明でもロック装置、クローザ、電磁レリーズについては、図６ないし図８に示す従来例と同様のものが設けられている（図４では符号を付していないが）。
【００１４】
なお、この実施例において、各ドアを折り畳んで元の戸袋に戻すときには、ここで説明したことと逆の動作が自動的に行われ、降下していたストップ部材１が第１ドアＡ側の元のハウジング２内に戻る。
またこの実施例では、ストップ部材が床面に楔状に当接させる構成としたが、これに限定されるものではなく、例えば床面に一部穿設した孔にストップ部材が嵌入する構成としてもよい。この場合、ストップ部材はばね等により常時下方に向けて弾性力を付勢されていてもよく、普段の平常時には例えば図５に示すようにストップ部材１´を側方からホールド部材３´で押さえこみ、降下動作を阻止する。
【００１５】
【発明の効果】
以上説明してきたようにこの発明によれば、ドアが展開するときには、吊元側ドア（例えば第１ドア及び第２ドアの２枚のドアからなる場合には、第１ドアＡ側）と吊先側ドア（同様に、第２ドアＢ側）との結合状態の解除動作に連動して吊元側ドア（第１ドアＡ側）において床面側にストップ部材が突出し、このストップ部材が床面と吊元側ドア（第１ドアＡ側）との間に楔状に当接して突張り、吊先側ドア（第２ドアＢ側）による側圧に対抗して吊元側ドア（第１ドアＡ側）のねじれや傾きを防止する。そして、長期間に亙たりドアの傾きを防止することができ、ひいては防火ドアとして信頼性の高いものを提供することができる。
【図面の簡単な説明】
【図１】この発明の捩じれ防止方法を適用した折りドアの展開動作を示すフローチャート。
【図２】この発明に係る捩じれ防止方法を示す説明図。
【図３】同説明図。
【図４】この発明の捩じれ防止方法が作用するドアの展開動作を示す説明図。
【図５】他の捩じれ防止方法を示す説明図。
【図６】折りドアの展開動作を示す説明図。
【図７】同説明図。
【図８】同説明図。
【図９】折りドアに作用する力の向きを示す説明図。
【図１０】従来の折りドアの欠点を示す説明図。
【符号の説明】
１ストップ部材（ストッパー装置）
２ハウジング
３ホールド部材
１０ロック装置
１１電磁レリーズ
１２戸袋
Ａ第１ドア
Ｂ第２ドア
ａ，ｂクローザ[0001]
BACKGROUND OF THE INVENTION
The present invention connects a plurality of doors side by side, with the I usually keep housed folded Ri folding, in an emergency relates to folding door closes a predetermined location, such as a corridor to expand, each in particular expanded the present invention relates in fold how to deploy the door that to prevent the twist and tilt of the door.
[0002]
[Prior art]
It usually along with the idea to storage folded Ri folded in (wall side) of the door pocket, in an emergency such as a fire door folding for the fire to close a predetermined location, such as a corridor to expand has been developed and used.
[0003]
Further, this folding door, usually together with the attached integrated together each door to keep housed in the door pocket in an electromagnetic release folded Ri folding, in an emergency is released from in fold folded state by the electromagnetic release closer A locking device has been developed and used to open each door that has been developed in step 1 from a combined state (to close a predetermined place, for example, a corridor, etc. for preventing fire or spreading fire). For details, see Utility Model Registration No. 1874754).
[0004]
For example, as shown in FIG. 6, the lock device 10 includes a lock member (not shown) on the first door A side and a hook member (not shown) on the second door B side that engages and locks the lock member. It has. On the other hand, the doors are folded and joined together by the locking device 10, and the second door B side is held by the electromagnetic release 11 and stored together in the door pocket 12.
[0005]
In addition, the emergency, first, the holding state of the second door B is released by the operation of the electromagnetic release 11, Ri folded first door A by closing force (the second door B of the closer a provided on the first door A Unfolded in the folded state ( unfolded ) and released in the direction of closing the corridor etc.
[0006]
Then, as shown in FIG. 7, immediately before the first door A is fully deployed (for example, when a part of the locking device comes into contact with the upper frame of the door), the locking member and the hook member are engaged. Is released. As a result, due to the closing force of the closer b provided on the second door B, the second door B starts to close. In this manner, the second door B is finally fully developed as shown in FIG. 8, and the corridor and the like can be completely closed.
[0007]
[Problems to be solved by the invention]
By the way, generally, in a door, an inclination caused by a rattling of a hanging base is somewhat generated on the door end side, but particularly in such a folding door, the inclination is amplified. In extreme cases, the door cannot be completely closed, which may cause a serious problem in disaster prevention.
[0008]
That is, as shown in FIG. 9, for example, when the first door A is completely unfolded and then the second door B is opened 90 degrees with respect to the first door A, the first door A A large torsional force is generated on the one surface by the load of the second door B. That is, in the same figure, the forces F and F ′ in the direction shown in the figure act on the upper and lower portions of the first door A as the moment of the own weight W of the second door B. As shown in FIG. As a result, there is a possibility that the door of the second door B cannot be closed by contacting the floor surface. However, when there is no door stop on the lower end side of the first door A, it is difficult to prevent this inclination.
Moreover, even if such a problem does not occur at the beginning of installation, it may become noticeable as it is used for a long period of time, which is not useful in an emergency and may cause a large fire.
[0009]
Therefore, in view of the above-described circumstances, an object of the present invention is to provide a folding door deployment method that can prevent the door from being twisted when the folding door is opened (deployed).
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a locking device is constituted by a locking member on the first door (A) side and a hook member on the second door (B) side that engages and locks the locking member, and each door (A) and (B) are folded and joined together with this locking device, the second door (B) side is held by the electromagnetic release and stored together in the door pocket. In an emergency, the electromagnetic release is activated. With this, the holding state of the second door (B) is released, and the first door (A) folds the second door (B) together with the closing force of the closer provided on the first door (A). It is released from the door pocket and is deployed in the direction of closing the corridor, and then immediately before the first door (A) is fully deployed, the locking device is activated and the engagement between the locking member and the hook member is released. As a result, the black provided on the second door (B) Due to the closing force of the door, the second door (B) starts to close, and finally the folding door that can close the corridor when the second door (B) is fully deployed. In the unfolding method, the stop member (1) housed in the housing (2) of the first door (A) is prevented from being lowered by the hold member (3) provided on the second door (B) during folding. After the first door (A) is closed, the second door (B) side begins to unfold and the second door (B) side moves away from the first door (A) side, so that the hold member (3) is stopped. The stop member (1) descends away from the member (1) and comes into contact with the floor surface of the hallway in a wedge shape, and after holding the first door (A), the second door (B) further expands and the hallway Was closed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a method for preventing twisting of a stopper device and a folding door (consisting of a first door A and a second door B, but may be composed of three or more) according to the present invention.
The twisting prevention method according to the present invention is applied particularly in the third step S3 and the fourth step S4 in the closing operation of the corridor (which may be a passage or the like) by the folding door constituted by the first step S1 to the fifth step S5. ing.
[0012]
In the first step S1, when the abnormality such as a fire occurs, which the electromagnetic Lely's actuation of detecting, to release the second door B side of the holding operation in the door pocket.
In the second step S2, upon release of the second door side B by electromagnetic Lely's in a first step S1, the second door B side and the second first door A which is coupled to the door B-side integrally with the door pocket Get out of it and unify it. Until this state, as shown in FIG. 2, the stop member (stopper device) 1 is housed in the housing 2 on the first door A side.
[0013]
In the third step S3, when the first door A side is rotated 90 degrees and completely deployed (see FIG. 7 in the conventional example), the locking device is started and the first door A side and the second door B side are started. The combined state is released. Thereby, the 2nd door B side begins to expand | deploy.
In the fourth step S4, the second door B side begins to expand, by the second door side B is between away from the first door A side, as shown in FIG. 3, the hold member 3 of the second door side B prevention There because apart from the stop member 1, a stop member 1 from the first door a side is lowered wedge in contact with the floor surface F, the twisting of the first door a side acts as erect or have bars To do. As a result, even when a large twisting force acts on the first door A side when the second door B side is opened 90 degrees from the first door A side as shown in FIG. Stop this.
In the present invention, the locking device, the closer, and the electromagnetic release are the same as those in the conventional example shown in FIGS. 6 to 8 (although not denoted by the reference numerals in FIG. 4).
[0014]
Incidentally, in this embodiment, when returning to the original door pocket by folding each door, here what has been described and reverse operation is performed automatically, based on the stop member 1 which has been lowered is first door A side Return to the housing 2 .
In this embodiment, the stop member is configured to abut on the floor surface in a wedge shape. However, the present invention is not limited to this. For example, the stop member may be inserted into a hole partially drilled in the floor surface. Good. In this case, the stop member may be always urged downward by a spring or the like, and in a normal normal time, for example, as shown in FIG. 5, the stop member 1 'is pressed from the side by the hold member 3'. Prevents dents and descents.
[0015]
【The invention's effect】
As described above, according to the present invention, when the door is unfolded, the suspension side door (for example, the first door A side in the case of the two doors of the first door and the second door) and the suspension are suspended. the front side door (Similarly, a second door side B) in conjunction with the releasing operation of the coupling state between Tsumoto side door stopper flop member projects on the floor side in (first door a side), the stopper up member floor surface and Tsumoto side door brace to contact the wedge between the (first door a side), Tsusaki side door Tsumoto side door against the lateral pressure by the (second door side B) ( The twist and inclination of the first door A side) are prevented . In addition, the door can be prevented from leaning for a long period of time, and as a result, a highly reliable fire door can be provided.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a folding door unfolding operation to which the twisting prevention method of the present invention is applied.
FIG. 2 is an explanatory view showing a twisting prevention method according to the present invention.
FIG. 3 is an explanatory diagram of the same.
FIG. 4 is an explanatory view showing a door unfolding operation on which the twisting preventing method of the present invention operates.
FIG. 5 is an explanatory diagram showing another twisting prevention method.
FIG. 6 is an explanatory view showing a folding door unfolding operation.
FIG. 7 is an explanatory diagram of the same.
FIG. 8 is an explanatory diagram of the same.
FIG. 9 is an explanatory diagram showing the direction of the force acting on the folding door.
FIG. 10 is an explanatory view showing a defect of a conventional folding door.
[Explanation of symbols]
1 Stop member (stopper device)
2 Housing 3 Hold member 10 Lock device 11 Electromagnetic release 12 Door bag A 1st door B 2nd door a, b Closer

Claims

A lock device is constituted by a lock member on the first door (A) side and a hook member on the second door (B) side that engages and locks the lock member, and each door (A) (B) is folded. The second door (B) side is held by the electromagnetic release while being integrally coupled with the lock device, and stored together in the door pocket. In an emergency, the second door (B) is held by the operation of the electromagnetic release. Is released, and the first door (A) is released from the door pocket while the second door (B) is joined together in the folded state by the closing force of the closer provided on the first door (A), and the corridor is closed. Then, immediately before the first door (A) is fully deployed, the locking device is actuated to release the engagement between the lock member and the hook member. As a result, the second door (B) is provided. The second door (B There began closing operation, ultimately, in a state where the second door (B) is fully deployed, the folding method of developing door to be able to close the corridor,
Holding the stop member (1) housed in the housing (2) of the first door (A) during folding so as to prevent the hold member (3) provided on the second door (B) from being lowered ,
After the first door (A) closes the corridor, the second door (B) side begins to unfold and the second door (B) side separates from the first door (A) side, so that the hold member (3) is a stop member. The stop member (1) descends away from (1) and comes into contact with the floor surface of the hallway in a wedge shape, and after holding the first door (A), the second door (B) further expands to pass through the hallway. A folding door unfolding method characterized by being closed.

The stop member (1) is configured to be lifted by a hold member (3) when the second door (B) operates in a direction in which the second door (B) is folded with respect to the first door (A). 1. A method for unfolding a folding door according to 1.