JP4359994B2

JP4359994B2 - Opening and closing body control device

Info

Publication number: JP4359994B2
Application number: JP2000057404A
Authority: JP
Inventors: 幸彦佐々木; 秀和本木
Original assignee: Bunka Shutter Co Ltd
Current assignee: Bunka Shutter Co Ltd
Priority date: 2000-03-02
Filing date: 2000-03-02
Publication date: 2009-11-11
Anticipated expiration: 2020-03-02
Also published as: JP2001248372A

Description

【０００１】
【発明の属する技術分野】
本発明は、開閉体の開閉を制御する開閉体制御装置に係り、特に、外部電源の供給の有無にかかわらず常時開閉体を自然移動制御可能な開閉体制御装置に関する。
【０００２】
【従来の技術】
防火シャッターは、火災発生時などに手動で開閉できるように自動閉鎖装置が設けられている。この自動閉鎖装置は、シャッターの開閉機に連結されたブレーキを解除するクラッチを切断、連結させるものであり、クラッチに連結されたワイヤが壁等まで延出されてなる。
ワイヤの終端には操作レバーが設けられ、操作レバーを操作することにより、クラッチが切断され、ブレーキを解除してシャッターを自重閉鎖することができる。この際、操作レバーを手動操作した際に発生する力を元にして機械的に動作する構成である。
【０００３】
また、この自動閉鎖装置には、上記の操作レバーの手動操作に限らず、防災信号（パルス電圧）などの外部信号の入力に基づき、前記ブレーキを解除させる構成のものもある。
自動閉鎖装置は２タイプあり、ａ）常に力や電源等を与えなければ常にブレーキが働く構成のものと、ｂ）力や電源等を与えなければそのままの状態を維持するものがある。ａ）のタイプのものは、力や電源を与えた期間のみシャッターが自然閉鎖され、力や電源の供給が絶たれると再度その位置でシャッターの停止状態が保持される。ｂ）のタイプのものは、通常ブレーキが働くよう構成されていて、解除するために力や電源が供給されると以降は、力や電源の供給が無くともブレーキ解除状態のままとなる。逆にブレーキ解除されるよう構成されているものもあり、この場合ブレーキをかけるための力や電源が供給されると以降は力や電源の供給が無くともブレーキがかかった状態のままとなる。
【０００４】
【発明が解決しようとする課題】
従来の自動閉鎖装置は、手動操作でシャッターを自然閉鎖させた場合、シャッターは全閉位置まで降下するが、途中停止させたい場合があった。
また、防災信号受信時においても自動閉鎖装置はこの防災信号に基づきシャッターは全閉するまで降下する。上記（ａ）タイプの自動閉鎖装置において防災信号が短い期間だけ出力された場合でも、通常、この期間中でシャッターが全閉するようになっている。
【０００５】
また、シャッターには、開閉時に障害物を感知する障害物感知装置が設けられたものがある。しかしながら、従来は、操作レバーを操作してシャッターを自然閉鎖させた場合、障害物感知装置への動作電源の供給の有無に関わらずシャッターが全閉するよう構成されている。自然降下中における障害物の感知でシャッターを途中停止させたい場合がある。
【０００６】
また、防災信号の入力を受けてシャッターを自動閉鎖させるよう構成した場合においても、障害物感知装置への動作電源の供給の有無に関わらず同様にこの自然閉鎖時における障害物感知機能を活かしたい場合がある。
【０００７】
本発明は、上記課題を解決するためになされたものであり、開閉体を外部電源供給の有無にかかわらず所望する時期に所定の移動指令で自然移動させることができ、また、自然移動させた際においても障害物の感知機能を働かせることができる開閉体制御装置を提供する事を目的としている。
【０００８】
【課題を解決するための手段】
上記目的を達成するため、本発明の請求項１記載の開閉体制御装置は、開閉体１の停止状態を動作用電源の供給に基づき解除して前記開閉体１を自重降下させる連結解除手段１０と、
前記開閉体１の移動開始時及び移動中において、移動に関する制御に電源を必要とする場合、外部からの所定の供給電源と補助電源２１とを所定の条件に基づいて選択して用い、開閉体１を所定方向に移動の指令に基づき前記連結解除手段１０を作動させ前記開閉体１を前記所定方向に自然移動させる制御手段４と、
を備え、
前記外部供給電源に接続される電源回路２０には、前記補助電源２１が設けられ、前記外部供給電源の供給断時に前記補助電源２１に切り替わり、
防災信号を受信待機する通常モード時は、駆動リレーＲ２が非通電状態にあり、リレー接点Ｒ２−２，Ｒ２−３が防災信号の入力端子３０側に切り替わった状態を保持し、この状態で前記防災信号が入力されると、該防災信号の所定電圧が、入力端子３０を介して前記連結解除手段１０に出力され前記開閉体１を自重降下させ、
前記制御手段４には、強制閉鎖指示手段が接続され、該制御手段４は、該強制閉鎖指示手段の操作時に、前記防災信号の入力がなくとも、該防災信号を受信待機する前記通常モードと異なる強制閉鎖モードとなり前記開閉体１を自重降下させ、
且つ、前記強制閉鎖指示手段が操作されると、前記電源回路２０の電源出力が供給されて、前記駆動リレーＲ２が通電状態となり、前記リレー接点Ｒ２−２，Ｒ２−３が切り替わり、前記電源回路２０からの電源が前記連結解除手段１０に出力され前記開閉体１を自重降下させることを特徴とする。
【０００９】
請求項２記載の開閉体制御装置は、請求項１記載の開閉体制御装置において、前記通常モード時は、操作手段３の操作を制御手段４が検知し、前記外部電源ＡＣにより開閉機Ｍを駆動制御して、同操作方向に前記開閉体１を開閉させることを特徴とする。
【００１０】
請求項３記載の開閉体制御装置は、請求項１又は２記載の開閉体制御装置において、前記強制閉鎖指示手段には並列に自己保持用リレー接点Ｒ２−１が設けられており、前記駆動リレーＲ２の通電後は、該自己保持用リレー接点Ｒ２−１が自己保持状態となることを特徴とする。
【００１１】
請求項４記載の開閉体制御装置は、請求項１又は２又は３記載の開閉体制御装置において、前記制御手段４の入力端子３０側に接続される防災信号制御盤２７は、補助電源２８を有し、前記防災信号の受信時に、前記入力端子３０に対して連続的に所定電圧を供給することを特徴とする。
【００１２】
請求項５記載の開閉体制御装置は、請求項１，２，３，４のいずれか１つに記載の開閉体制御装置において、前記強制閉鎖指示手段には、直列に復帰スイッチ３ｅが設けられ、該復帰スイッチ３ｅを操作することにより前記リレー接点Ｒ２−２，Ｒ２−３が切り替わり前記通常モードに復帰することを特徴とする。
【００１３】
請求項６記載の開閉体制御装置は、請求項１，２，３，４，５のいずれか１つに記載の開閉体制御装置において、前記開閉体１の開閉時に障害物を感知する障害物感知手段１５を備え、前記強制閉鎖モードで前記開閉体１を自重降下させた場合に、該障害物感知手段１５にて障害物を感知すると、前記制御手段４は前記開閉体１の降下を停止させることを特徴とする。
【００１４】
請求項７記載の開閉体制御装置は、請求項１，２，３，４，５，６のいずれか１つに記載の開閉体制御装置において、前記強制閉鎖指示手段は、機械的操作である引っ張りを電気的に検知する検知手段を設けたワイヤ９であることを特徴とする。
【００１５】
上記構成によれば、連結解除手段の連結解除により開閉体は自然移動すなわち自重降下する。この連結解除手段は、制御手段あるいは外部からの所定の供給電源を動作用電源とし電源供給により直ちに開閉体を自重降下させる。制御手段は、開閉体の移動制御に電源が必要なとき外部からの所定の供給電源と補助電源を選択して用い連結解除手段と障害物感知手段にそれぞれ供給する。これにより、外部電源の停電時であっても開閉体を自重降下制御でき、降下移動期間中に障害物感知を機能できる。
【００１６】
【発明の実施の形態】
図１は、本発明の開閉体制御装置を示す構成図である。本実施形態では開閉体として防火機能を有するシャッターの例を用いて説明する。
出入口等に設けられるシャッター１は、開閉機Ｍの駆動に連動して上下方向に開閉自在である。
【００１７】
通常時におけるシャッター１の開閉は、壁等に設けられた操作手段３の各スイッチ（開ＳＷ３ａ、閉ＳＷ３ｂ、停ＳＷ３ｃ）を操作することにより、制御手段４がこの操作を検知し、外部電源ＡＣにより開閉機Ｍを駆動制御して、同操作方向にシャッター１を開閉させる。
【００１８】
このシャッター１には、防火機能として火災時等に開閉機Ｍを電気的に駆動させずとも、シャッター１の自重で出入口を閉鎖させる機能を有している。
この機能は、ブレーキ機構６と、連結解除手段１０によって構成されている。
【００１９】
図２は、開閉機Ｍ部分の拡大図である。
シャッター１は、開閉機Ｍの回転軸の回転により開閉（昇降）する。開閉機Ｍの側部には、回転軸にブレーキ機構６が連結されている。ブレーキ機構６は、回転軸の回転を停止、開放（切断、連結）するクラッチ７を備えている。このクラッチ７は、ブレーキ開放レバー８の動作により切断、連結される。
【００２０】
このブレーキ開放レバー８は、ワイヤ９の一端に連結されており、ワイヤ９の他端は壁等まで延出されている。
火災時等には、ワイヤ９の他端を引っ張ることにより、この力でクラッチ７を切断して開閉機Ｍの回転軸を自由にでき、シャッター１の自重でシャッター１を自重降下させ出入口を閉鎖させることができる。この際、外部電源ＡＣの供給の有無に関わらず、シャッター１を閉鎖させることができる。
【００２１】
連結解除手段１０は、外部から制御信号（例えばＤＣ２４Ｖの防災信号）が入力されたとき、この防災信号に連動してシャッター１を閉鎖させるために設けられる。この連結解除手段１０は前述したタイプ（ａ）の自動閉鎖装置で構成されており、ブレーキ開放レバー８が引っ張り操作された間、及び防災信号が入力された間のみブレーキを解除する構成となっている。
防災信号が入力されると、この防災信号（の電圧）によって連結解除手段１０は解除ピン１１を突出駆動させる。解除ピン１１は、突出によってブレーキ機構６のブレーキ開放レバー８の一端（係合ピン８ａ）に接触し、クラッチ７を切断するようになっている。
これにより、火災時等に防災信号を受けると、この防災信号に連動してシャッター１を閉鎖させる。この際、外部電源ＡＣの供給の有無に関わらず、防災信号を受信することによってシャッター１を閉鎖させることができる。
【００２２】
図１に戻り全体構成を説明する。このシャッター１には障害物感知手段１５が設けられている。
障害物感知手段１５は、例えばシャッター１の下端部（座板）１ｂに設けられ、障害物接触時にスイッチが切り替わる感知スイッチ１５ａと、感知スイッチ１５ａの感知状態を検出する検出部１５ｂで構成されている。感知スイッチ１５ａと検出部１５ｂの間は、接続線を用いた配線や、光等を媒体とした送受信部を備えた無線通信の構成で互いに接続される。検出部１５ｂは受信した感知信号を連結解除手段１０、及び制御手段４に出力し、連結解除手段１０はこの感知信号受信時には、解除ピン１１を待避させクラッチ７を連結する。
【００２３】
制御手段４はこの感知信号に基づき開閉機Ｍへの電源供給を遮断しシャッター１を停止させる。
この障害物感知手段１５に送受信部を設けた構成においては、座板側に設けられる送信部は電池等で駆動するようになっている。なお、感知スイッチ１５ａは、上記構成の他、シャッター１のガイドレールに沿って上下に設けられたテーブスイッチで構成し、シャッター１には障害物接触時に差動片がテープスイッチを押圧する構成としてもよい。この他、出入口に光センサを設けて障害物を検知する構成にもできる。
【００２４】
この制御手段４には、前記操作手段３の他の機能の操作スイッチとして、強制閉鎖スイッチ（ＳＷ）３ｄが接続される。制御手段４は、この強制閉鎖ＳＷ３ｄの操作時には、通常時（防災信号を受信待機する通常モード）と異なる強制閉鎖モードでシャッター１を自重降下させる。
この強制閉鎖ＳＷ３ｄは、シャッターを自重降下させる強制閉鎖指示手段を構成している。
【００２５】
図３は、制御手段４の内部構成を示す回路図である。この回路は、強制閉鎖モードに関連する連結解除手段１０に関与する構成のみ記載されており、開閉機Ｍの駆動等他の制御回路は図示は省略している。
外部電源ＡＣは、電源回路２０で整流されて駆動回路２５側に出力される。電源回路２０内部には、補助電源２１が設けられており、切替回路２２によって外部電源ＡＣの供給断時に補助電源２１に切り替わるよう構成されている。
【００２６】
切替回路２２は、外部電源ＡＣの供給時に通電状態となる駆動リレーＲ１と、この駆動リレーＲ１の通電期間中は外部電源ＡＣ側に切り替わった状態を保持し、外部電源ＡＣの供給断時に補助電源２１側に切り替わる２つのリレー接点Ｒ１−１、Ｒ１−２からなる。
補助電源２１は、外部電源ＡＣの供給期間中に充電される２次電池によって構成されており、この補助電源２１は外部電源ＡＣの切断直後から容量に対応した所定時間の間、駆動回路２５に電源を供給することができる。
【００２７】
駆動回路２５は、電源回路２０から供給された電源（ＤＶ２４Ｖ）が駆動リレーＲ２、及び強制閉鎖用ＳＷ３ｄに接続されている。強制閉鎖用ＳＷ３ｄは常開接点であるため、通常時は、駆動リレーＲ２が非通電状態にある。
対応して、通常状態においてリレー接点Ｒ２−２、Ｒ２−３は防災信号の入力端子３０側に切り替わった状態が保持されている。この状態で防災信号が入力されると、防災信号が入力端子３０〜出力端子３１を介して連結解除手段１０に出力される（シャッター１が自重降下する）ようになっている。
【００２８】
一方、火災発生等で強制閉鎖用ＳＷ３ｄが操作されると、駆動リレーＲ２が通電状態となり、リレー接点Ｒ２−２、Ｒ２−３が切り替わり、電源回路２０からの電源が連結解除手段１０に出力され、シャッター１を自重降下させることができる。
強制閉鎖用ＳＷ３ｄには並列に自己保持用リレー接点Ｒ２−１が設けられており、駆動リレーＲ２の通電後は、この自己保持用リレー接点Ｒ２−１が自己保持状態となり、強制閉鎖用ＳＷ３ｄの操作が解除されても連結解除手段１０への電源供給が継続され、シャッター１を全閉するまで継続できるようになっている。
【００２９】
防災信号制御盤２７は、内部に補助電源２８を有し、防災信号の受信時に、入力端子３０に対して連続的に所定電圧を供給する。
この補助電源２８は、通常状態において外部電源を蓄電する２次電池等で構成され、前記電源回路２０に設けられた補助電源２１と同様の構成であり、この補助電源２１を用いる構成にもできる。
【００３０】
また、強制閉鎖用ＳＷ３ｄには、直列に常閉接点の復帰ＳＷ３ｅが設けられている。シャッター１の全閉後に復帰ＳＷ３ｅを操作することにより、駆動リレーＲ２に対する電源回路２０側からの通電状態を切断し、リレー接点Ｒ２−２，Ｒ２−３を切り替えて通常状態（防災信号の入力待機状態）に復帰させることができる。
【００３１】
上記の連結解除手段１０には、障害物感知手段１５の検知部１５ｂが設けられている。即ち、この検知部１５ｂを動作させるための電源は、前記制御手段４を介して外部電源ＡＣあるいは防災信号によって常時得られるようになっている。これにより、外部電源ＡＣの供給の有無、及び防災信号受信時、さらには、強制閉鎖ＳＷ３ｄの押下後等、全てのシャッター１開閉時に障害物感知を行えるようになる。詳細は省略するが、感知部１５ａが障害物を感知し、検知部１５ｂがこの感知信号を受信すると制御手段４は、所定の障害物感知時制御を実行する。少なくとも開閉中のシャッター１を途中停止させるべく、開閉機Ｍを停止制御させる（同時にブレーキ機構６のブレーキを働かせてもよい）。
なお、この検知部１５ｂは連結解除手段１０内部に設けるに限らず、動作用電源を制御手段４の出力端子３１から得る構成として連結解除手段１０の外部に設ける構成としてもよい。
【００３２】
次に、上記構成によるシャッター１の強制閉鎖にかかる動作を図４，図５のフローチャートを用いて説明する。
制御手段４は、外部電源ＡＣの供給の有無を判断する（Ｓ１）。外部電源ＡＣが供給されている状態（Ｓ１−ＮＯ）においては、電源回路２０の整流子２から駆動リレーＲ１への電源供給が継続した状態にある。この際、リレー接点Ｒ１−１は外部電源ＡＣ側に切り替わった状態が保持され、電源回路は外部電源ＡＣに基づき所定電圧（ＤＣ２４Ｖ）を駆動回路２５側に供給する（Ｓ３）。
【００３３】
一方、外部電源ＡＣが停電等で供給が断たれた状態になると（Ｓ１−ＹＥＳ）、整流子２から駆動リレーＲ１への電源供給が絶たれ、リレー接点Ｒ１−１は補助電源２１側に切り替わり、補助電源２１から上記所定電圧を駆動回路２５側に供給する（Ｓ２）。
以上のように、外部電源ＡＣの供給の有無に関わらず、駆動回路２５側には所定電源が連続して供給される。
【００３４】
この状態で、外部からの防災信号を受信待機状態にあり、制御手段４は操作スイッチ３の操作に基づきシャッター１を通常モードで開閉制御する。
即ち、駆動回路２５は、強制閉鎖ＳＷ３ｄが操作されない状態において駆動リレーＲ２が通電しておらず、リレー接点Ｒ２−２、Ｒ２−３は入力端子３０，出力端子３１間を接続する状態に保持されており、防災信号の待機状態にある。
【００３５】
そして、火災などで外部から防災信号が入力された場合には（Ｓ４−ＹＥＳ）、防災信号が出力端子３１から出力される。これにより連結解除手段１０、及び障害物感知手段１５の検知部１５ｂに防災信号の所定電圧が入力される。
防災信号の入力により、連結解除手段１０は、解除ピン１１を突出させブレーキを解除してシャッター１を自重降下させて出入口を閉鎖する（Ｓ５，Ｓ６−ＮＯ，Ｓ７）。
【００３６】
シャッター１の自重降下時に、シャッター１が障害物に接触した場合には（Ｓ６−ＹＥＳ）、障害物感知手段１５は検出部１５ｂに入力した感知信号に基づき、制御手段４にシャッター１を停止させる停止信号を出力する。この際、連結解除手段１０は、解除ピン１１を待避しクラッチ７を連結させるとともに、ブレーキをかける。制御手段４は、停止信号の入力に基づき開閉機Ｍに供給する電源を切断しシャッター１を直ちに停止させる（Ｓ８）。
なお、検出部１５ｂは制御手段４における開閉機Ｍを駆動するための電源供給ラインの一部を直接切断すべくリレー接点を介在させる等の回路構成にする事もできる。
【００３７】
このように、防災信号の入力でシャッター１が自重降下する場合においても、障害物感知手段１５による障害物を感知できるようになる。
この後、出入口における障害物感知状態が解除されると（Ｓ９−ＹＥＳ）、障害物感知手段１５は障害物の非感知状態に復帰し、連結解除手段１０は解除ピン１１を突出させクラッチを連結解除してシャッター１を再降下させる（Ｓ１０）。この後、障害物が感知されない場合（Ｓ６−ＮＯ）、全閉まで降下すれば（Ｓ７ーＹＥＳ）、終了する。
シャッター１の全閉状態は、後述するようなリミットスイッチなどの下限位置検出手段を用いて検知する構成としてもよい。
障害物が感知されない状態（Ｓ６−ＮＯ）が所定時間経過することを監視してシャッター１が全閉と判断し、自動的に連結解除手段１０への電源供給を遮断して解除ピン１１を待避させクラッチ７を連結させる初期状態に復帰させる事もできる。
【００３８】
上記装置は、防災信号の入力がなくとも強制閉鎖ＳＷ３ｄの操作によってシャッター１を自重降下させることができる。
通常モードで防災信号が入力されていない状態（Ｓ４−ＮＯ）において、強制閉鎖ＳＷ３ｄが操作されると（Ｓ１１）、電源回路２０からの駆動電源が出力端子から連結解除手段１０に供給され、シャッター１が自重降下する（Ｓ１２）。
【００３９】
即ち、駆動リレーＲ２に電源回路２０の電源出力が供給されて、リレー接点Ｒ２−１が閉じ、強制閉鎖ＳＷ３ｄと並列なリレー接点Ｒ２−１は駆動リレーＲ２の通電状態を自己保持する。
同時に、リレー接点Ｒ２−２，Ｒ２−３が切り替わり、電源回路２０（外部電源ＡＣあるいは補助電源２１）の電源電圧が出力端子３１から連結解除手段１０、及び障害物感知手段１５の検知部１５ｂに供給される。
【００４０】
連結解除手段１０は、電源回路２０からの電源に基づき、解除ピン１１を突出させブレーキを解除してシャッター１を自重降下させて出入口を閉鎖する（Ｓ１３，Ｓ１４−ＮＯ，Ｓ１５）。
【００４１】
シャッター１の自重降下時に、シャッター１が障害物に接触した場合には（Ｓ１４−ＹＥＳ）、障害物感知手段１５は検出部１５ｂに入力した感知信号に基づき、制御手段４にシャッター１を停止させる停止信号を出力する。この際、連結解除手段１０は、解除ピン１１を待避しクラッチ７を連結させるとともに、ブレーキをかける。制御手段４は、停止信号の入力に基づき開閉機Ｍに供給する電源を切断しシャッター１を直ちに停止させる（Ｓ１６）。
このように、強制閉鎖ＳＷ３ｄを操作してシャッター１を自重降下させた場合においても、障害物感知手段１５による障害物を感知できるようになる。
【００４２】
この後、出入口における障害物感知状態が解除されると（Ｓ１７ーＹＥＳ）、復帰ＳＷ３ｅの操作で通常状態への復帰が可能となる。この復帰ＳＷ３ｅを操作すると（Ｓ１８−ＹＥＳ）、連結解除手段１０を通常状態に復帰させることができる（Ｓ１９）。
この復帰については、連結解除手段１０への電源供給状態を継続状態のままとしても良い他、図示のように、特定キーの押下などで連結解除手段１０への電源供給を遮断してもよい。電源遮断は、例えば復帰ＳＷ３ｄの操作で駆動リレーＲ２への通電状態が解除され、リレー接点Ｒ２−１による自己保持状態が解除され、リレー接点Ｒ２−２、Ｒ２−３が切り替わり出力端子３１は入力端子３０に接続されて電源回路２０からの電源を遮断する。これにより、連結解除手段１０は防災信号の受信待機状態に復帰する。
【００４３】
この後、障害物が感知されない場合（Ｓ１４−ＮＯ）、全閉まで降下すれば（Ｓ１５ーＹＥＳ）、終了する。このシャッター１の全閉は、後述する下限位置検出手段を用いて検知する構成としてもよい。なお、Ｓ１８での復帰操作がなされずとも、障害物が感知されない状態（Ｓ１４−ＮＯ）が所定時間経過することを監視してシャッター１が全閉と判断し、自動的に連結解除手段１０への電源供給を遮断して解除ピン１１を待避させクラッチ７を連結させる初期状態に復帰させる事もできる。
【００４４】
上述した制御手段４は、開閉体の移動開始時及び移動中において、移動に関する制御に電源を必要とする場合、外部からの所定の供給電源と補助電源とを所定の条件に基づいて選択して用いる構成とした。この移動に関する制御とは、移動開始、停止、再開、反転等の制御である。また、電源選択の具体例を説明する。１．外部から所定の供給電源（上記実施形態の説明では防災信号）が入力されればこの電力を少なくとも制御開始時に用いるが、強制閉鎖ＳＷ押下時等、外部から所定の電源の供給がない状態においては補助電源を選択する。
２．外部から所定の供給電源の供給が途中で途絶えた場合には、補助電源に切り替える。この場合、開閉体が全閉あるいは全開に至るまで外部から所定の供給電源の供給が途絶えなければ、結果的に補助電源には切り替えない。
３．閉鎖の所定の中間位置で時間経過まで（例えば、通常は障害物に接触しないと思われる位置まで）は外部から所定の供給電源を用い、その後は外部から所定の供給電源の供給の有無にかかわらず補助電源に切り替える。
４．閉鎖の開始は外部から所定の供給電源の電力で行い、その後直ぐに補助電源に切り替えて全閉等の終了までは補助電源を用いる。
５．外部信号（外部からの所定の供給電源の場合、あるいは制御用信号の場合）は単に電源切り替えのタイミングとして用い、信号検出、閉鎖開始から全閉までは補助電源を用いる。
６．外部から所定の供給電源の供給状態（電圧値や電流値）を監視する手段を設け、監視している電圧値や電流値が低下したとき、外部から所定の供給電源が途絶えたと判断して補助電源に切り替える。
【００４５】
また、上記説明では、連結解除手段１０の作動によるシャッター１の自重降下は、防災信号、あるいは電源回路２０からの電源供給に基づき電気的制御で実行される構成としたが、これに限らず、前述したワイヤ９の他端を引っ張る機械的操作によっても自重降下させることができる。また、シャッター１が電気的制御で自重降下している最中にワイヤ９の引っ張りを戻せばシャッター１を直ちに途中停止させることもできる。
【００４６】
このワイヤ９を用いた自重降下の操作は、前述した強制閉鎖ＳＷ３ｄの操作と同様に、シャッターを自重降下させる強制閉鎖指示手段の他の例である。したがって、ワイヤ９の引っ張りを電気的に検知する検知手段を設けてワイヤ９の引っ張りを検知したときには強制閉鎖ＳＷ３ｄが操作されたと同じ状態を生成する構成としても良い。
この場合、図３に示す回路上での具体例としては、強制閉鎖ＳＷ３ｄと並列にリレー接点（常開）を設け、ワイヤ９の引っ張りが検知手段で検知されたときにこの並列リレー接点を閉じる構成とすればよい。
【００４７】
また、防災信号に基づきシャッター１を自重降下させた後においても、復帰ＳＷ３ｅによる復帰操作で連結解除手段１０を復帰させることもできる。この場合、Ｓ９においてシャッター１の自重降下後、一旦、強制閉鎖ＳＷ３ｄを操作して連結解除手段１０に対し電源回路２０側からの電源を供給させた後、復帰ＳＷ３ｅを操作して行えば、Ｓ１７記載の同様の動作で連結解除手段１０を復帰させることができる。
【００４８】
また、図示しないがシャッター１の閉鎖状態を検知する下限位置検出手段を設ける構成としてもよい。シャッター１の下限位置を検出する事により、障害物感知手段１５の感知が障害物、あるいは床面のいずれであるかを判別でき、上記Ｓ７，Ｓ１５における終了状態を判断できるようになる。
この下限位置検出手段は、例えばガイドレールの下部間に設けたリミットＳＷ、一対の投受光センサ、開閉機Ｍの回転数カウントによるシャッター１の移動位置検出などによってシャッター１の下限位置を検出する。
上記構成によれば、シャッター１の下部（座板）が床面に着地すれば、障害物感知状態ではないと判断でき、同時に連結解除手段１０を自動復帰できるようになる。
【００４９】
上記実施形態では、防災信号が単パルスなど短時間のみ供給される構成を前提として防災信号制御盤２７（補助電源２８）を用いる構成としたが、防災信号が連続的に供給される構成においては、防災信号制御盤２７の構成は不要であり、防災信号の信号線を直接制御手段４の入力端子３０に直接接続すればよい。
【００５０】
ところで、上記実施形態において、シャッター１は自重降下で自然閉鎖する構成であるため、この自然閉鎖に関して開閉機Ｍは何ら関与していない。したがって、本発明では開閉機Ｍを用いずシャッター１を自然閉鎖させるだけの構成にすることもできる。
一方、本発明の障害物感知手段１５にて障害物が感知された際にシャッター１を開放方向に反転駆動する場合や、防災信号を受けて定期的に降下訓練したり、設置時に全開状態にする必要が有る場合等には、開閉機Ｍを用いる構成としても良い。
【００５１】
上記の実施形態では、開閉体として昇降する防火シャッターを例に説明したが、本発明はこれに限らず通常のシャッターや、横開きシャッターにも適用できる。また、シャッターに限らず、スライディングドア等に適用しても同様の作用効果を得ることができる。さらに、昇降式のシャッターで自重降下（閉鎖）する例を説明したが、付勢手段を備えたドアなどで閉鎖側に付勢された構成では連結解除手段１０の連結解除動作でこのドアを閉鎖限度位置まで自然閉鎖させることができるようになる。同様に開放側に付勢されている場合には連結解除動作で開放側へ自然開放させることができる。
自然開放させる他の開閉体の例としては、通常時は上方で吊って全閉状態を保っているが、所定の信号を受信すると、吊った状態を解除して自重落下で開放させるものがある。
【００５２】
【発明の効果】
本発明によれば、連結解除手段に対する動作用電源を外部からの所定の供給電源あるいは補助電源のいずれかから常時供給可能に構成したので、開閉体を直ちに自重降下できるようになる。
また、障害物感知装置を設けた構成により、開閉体の自重降下時に障害物を感知できるようになる。また、障害物感知装置に対して補助電源から動作用の電源を供給することにより、開閉体の降下時に外部電源の供給の有無にかかわらず障害物を感知できるようになる。
また、強制閉鎖指示手段を設けて、通常時は外部から所定の供給電源を入力待機し強制閉鎖指示手段を用いた自重降下指示時には、外部からの供給電源の供給状態にかかわらず、動作用電源を連結解除手段に供給する構成とすれば、指示した任意の時期に開閉体を強制的に自重降下できるようになる。
また、外部からの供給電源の供給状態そのものを監視せずとも、強制閉鎖指示手段の自重降下の指示で商用電源あるいは補助電源を連結解除手段に供給して開閉体を自重降下させる事もできるようになる。
また、開閉体の駆動手段を設けて開閉体の自重降下時に障害物感知したときには開閉体を反転移動させることができるようになる。
また、外部から所定の信号が入力されると、動作用の電源を補助電源に切り替える構成にして、補助電源を用いて開閉体を自重降下できるようになる。
【図面の簡単な説明】
【図１】本発明の開閉体制御装置の全体構成を示す図。
【図２】開閉機の部分拡大図。
【図３】制御手段の内部構成を示す回路図。
【図４】自動閉鎖の動作を示すフローチャート（その１）。
【図５】自動閉鎖の動作を示すフローチャート（その２）。
【符号の説明】
１…開閉体（シャッター）、３…操作手段、３ｄ…強制閉鎖ＳＷ、３ｅ…復帰ＳＷ、４…制御手段、６…ブレーキ機構、８…ブレーキ開放レバー、９…ワイヤ、１０…連結解除手段、１１…解除ピン、１５…障害物感知手段、１５ａ…感知スイッチ、１５ｂ…検出部、２０…電源回路、２１…補助電源、２２…切替回路、２５…駆動回路、２７…防災信号制御盤、２８…補助電源、３０…（防災信号）入力端子、３１…出力端子、Ｍ…開閉機。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing body control device that controls the opening / closing of an opening / closing body, and more particularly, to an opening / closing body control device capable of controlling natural movement of an opening / closing body regardless of whether external power is supplied.
[0002]
[Prior art]
The fire shutter is provided with an automatic closing device so that it can be manually opened and closed in the event of a fire. This automatic closing device disconnects and connects a clutch for releasing a brake connected to a shutter opening / closing device, and a wire connected to the clutch extends to a wall or the like.
An operation lever is provided at the end of the wire, and by operating the operation lever, the clutch is disengaged, the brake can be released, and the shutter can be closed by its own weight. At this time, the operation is mechanically performed based on the force generated when the operation lever is manually operated.
[0003]
In addition, the automatic closing device is not limited to the manual operation of the operation lever, but may be configured to release the brake based on the input of an external signal such as a disaster prevention signal (pulse voltage).
There are two types of automatic closing devices: a) one in which the brake always operates unless power or power is applied, and b) one that maintains the state as it is unless power or power is applied. In the case of the type a), the shutter is naturally closed only during a period in which force or power is applied, and when the supply of power or power is cut off, the shutter is stopped again at that position. The type b) is normally configured to operate the brake, and when a force or power is supplied to release the brake, the brake remains released even if no force or power is supplied. On the contrary, some brakes are configured to be released. In this case, when a force or power for applying the brake is supplied, the brake is applied even if no force or power is supplied.
[0004]
[Problems to be solved by the invention]
In the conventional automatic closing device, when the shutter is naturally closed by manual operation, the shutter is lowered to the fully closed position, but there is a case where it is desired to stop the shutter halfway.
Even when the disaster prevention signal is received, the automatic closing device descends based on the disaster prevention signal until the shutter is fully closed. Even when the disaster prevention signal is output for a short period in the automatic closing device of type (a), the shutter is normally fully closed during this period.
[0005]
Some shutters are provided with an obstacle sensing device that senses obstacles during opening and closing. However, conventionally, when the operation lever is operated to naturally close the shutter, the shutter is fully closed regardless of whether the operation power is supplied to the obstacle sensing device. You may want to stop the shutter halfway by detecting an obstacle during natural descent.
[0006]
In addition, even when the shutter is automatically closed in response to the input of a disaster prevention signal, we want to make use of this obstacle detection function during natural closure, regardless of whether or not operating power is supplied to the obstacle detection device. There is a case.
[0007]
The present invention has been made to solve the above-described problem, and the opening / closing body can be naturally moved with a predetermined movement command at a desired time regardless of whether external power is supplied or not. An object of the present invention is to provide an opening / closing body control device capable of operating an obstacle sensing function.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the opening / closing body control device according to claim 1 of the present invention is a connection release means 10 for releasing the opening / closing body 1 by its own weight by releasing the stop state of the opening / closing body 1 based on the supply of operating power. When,
When power is required for control related to movement at the start of movement of the opening / closing body 1 and during movement, a predetermined supply power from the outside and the auxiliary power supply 21 are selected based on predetermined conditions and used. Control means 4 for actuating the connection release means 10 based on a command to move 1 in a predetermined direction and moving the opening / closing body 1 naturally in the predetermined direction;
With
The power supply circuit 20 connected to the external power supply is provided with the auxiliary power supply 21, and switches to the auxiliary power supply 21 when the supply of the external power supply is interrupted.
In the normal mode for receiving and receiving the disaster prevention signal, the drive relay R2 is in a non-energized state, and the relay contacts R2-2 and R2-3 are switched to the input terminal 30 side of the disaster prevention signal. When the disaster prevention signal is input, a predetermined voltage of the disaster prevention signal is output to the connection release means 10 through the input terminal 30 and the opening / closing body 1 is lowered by its own weight,
The control means 4 is connected to a forced closing instruction means, and the control means 4 is configured to receive the disaster prevention signal and wait for receiving the disaster prevention signal when the forced closing instruction means is not operated. It becomes a different forced closing mode, the weight of the opening and closing body 1 is lowered,
When the forced closing instruction means is operated, the power output of the power circuit 20 is supplied, the drive relay R2 is energized, the relay contacts R2-2 and R2-3 are switched, and the power circuit The power supply from 20 is output to the connection release means 10, and the opening / closing body 1 is lowered by its own weight.
[0009]
The opening / closing body control device according to claim 2 is the opening / closing body control device according to claim 1, wherein the control means 4 detects the operation of the operation means 3 in the normal mode, and the switch M is controlled by the external power source AC. The opening / closing body 1 is opened and closed in the same operation direction by driving control.
[0010]
The opening / closing body control device according to claim 3 is the opening / closing body control device according to claim 1 or 2, wherein a self-holding relay contact R2-1 is provided in parallel to the forced closing instruction means, and the drive relay After energization of R2, the self-holding relay contact R2-1 is in a self-holding state.
[0011]
The switch control device according to claim 4 is the switch control device according to claim 1, 2 or 3, wherein the disaster prevention signal control panel 27 connected to the input terminal 30 side of the control means 4 has an auxiliary power supply 28. And a predetermined voltage is continuously supplied to the input terminal 30 when the disaster prevention signal is received.
[0012]
The opening / closing body control device according to claim 5 is the opening / closing body control device according to any one of claims 1, 2, 3 and 4, wherein the forced closing instruction means is provided with a return switch 3e in series. By operating the return switch 3e, the relay contacts R2-2 and R2-3 are switched to return to the normal mode.
[0013]
The opening / closing body control device according to claim 6 is the opening / closing body control device according to any one of claims 1, 2, 3, 4, 5, wherein the obstacle senses an obstacle when the opening / closing body 1 is opened / closed. When the obstruction sensing means 15 senses an obstacle when the opening / closing body 1 is lowered by its own weight in the forced closing mode, the control means 4 stops the descent of the opening / closing body 1. It is characterized by making it.
[0014]
The opening / closing body control device according to claim 7 is the opening / closing body control device according to any one of claims 1, 2, 3, 4, 5 and 6, wherein the forced closing instruction means is a mechanical operation. The wire 9 is provided with detection means for electrically detecting tension.
[0015]
According to the above configuration, the opening / closing body naturally moves, that is, falls under its own weight due to the release of the connection release means. The connection release means uses the predetermined power supply from the control means or the outside as an operation power supply, and immediately lowers the weight of the opening / closing body by the power supply. The control means selects and uses predetermined external power supply and auxiliary power from the outside when power is required for movement control of the opening and closing body, and supplies the selected power supply and auxiliary power supply to the connection release means and the obstacle sensing means, respectively. As a result, the open / close body can be controlled by its own weight descent even during a power failure of the external power supply, and obstacle sensing can function during the descent movement period.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a configuration diagram showing an opening / closing body control device of the present invention. In this embodiment, an example of a shutter having a fire prevention function as an opening / closing body will be described.
The shutter 1 provided at the doorway or the like can be opened and closed in the vertical direction in conjunction with the driving of the opening and closing machine M.
[0017]
The shutter 1 is normally opened and closed by operating each switch (open SW 3a, closed SW 3b, stop SW 3c) of the operation means 3 provided on the wall or the like, and the control means 4 detects this operation, and the external power supply AC The opening / closing machine M is driven and controlled to open and close the shutter 1 in the same operation direction.
[0018]
The shutter 1 has a function of closing the entrance / exit by the dead weight of the shutter 1 without electrically driving the opening / closing machine M in a fire or the like as a fire prevention function.
This function is constituted by the brake mechanism 6 and the connection release means 10.
[0019]
FIG. 2 is an enlarged view of the switch M portion.
The shutter 1 is opened / closed (lifted / lowered) by the rotation of the rotary shaft of the opening / closing machine M. A brake mechanism 6 is connected to a rotating shaft at a side portion of the opening / closing machine M. The brake mechanism 6 includes a clutch 7 that stops and releases (disconnects and connects) the rotation of the rotating shaft. The clutch 7 is disconnected and connected by the operation of the brake release lever 8.
[0020]
The brake release lever 8 is connected to one end of a wire 9 and the other end of the wire 9 extends to a wall or the like.
In the event of a fire, the other end of the wire 9 is pulled, so that the clutch 7 can be disconnected by this force to freely rotate the rotary shaft of the switch M. The shutter 1 is lowered by its own weight, and the entrance is closed. Can be made. At this time, the shutter 1 can be closed regardless of whether or not the external power supply AC is supplied.
[0021]
The connection release means 10 is provided to close the shutter 1 in conjunction with the disaster prevention signal when a control signal (for example, a DC24V disaster prevention signal) is input from the outside. This connection release means 10 is composed of the type (a) automatic closing device described above, and is configured to release the brake only while the brake release lever 8 is pulled and when a disaster prevention signal is input. Yes.
When a disaster prevention signal is input, the connection release means 10 drives the release pin 11 to project by this disaster prevention signal (voltage). The release pin 11 comes into contact with one end (engagement pin 8 a) of the brake release lever 8 of the brake mechanism 6 by the protrusion, and disconnects the clutch 7.
Thereby, if a disaster prevention signal is received at the time of a fire etc., the shutter 1 will be closed in conjunction with this disaster prevention signal. At this time, the shutter 1 can be closed by receiving the disaster prevention signal regardless of whether or not the external power supply AC is supplied.
[0022]
Returning to FIG. 1, the overall configuration will be described. The shutter 1 is provided with obstacle detection means 15.
The obstacle sensing means 15 is provided, for example, at the lower end (seat plate) 1b of the shutter 1, and includes a sensing switch 15a that switches when the obstacle is touched, and a detection unit 15b that detects the sensing state of the sensing switch 15a. Yes. The sensing switch 15a and the detection unit 15b are connected to each other in a wireless communication configuration including a wiring using a connection line and a transmission / reception unit using light or the like as a medium. The detection unit 15b outputs the received sensing signal to the connection release means 10 and the control means 4, and the connection release means 10 retracts the release pin 11 and connects the clutch 7 when receiving this detection signal.
[0023]
Based on this sensing signal, the control means 4 shuts off the power supply to the switch M and stops the shutter 1.
In the configuration in which the obstacle sensing means 15 is provided with a transmission / reception unit, the transmission unit provided on the seat plate side is driven by a battery or the like. In addition to the above configuration, the sensing switch 15a is configured by a tab switch provided up and down along the guide rail of the shutter 1, and the shutter 1 has a configuration in which a differential piece presses the tape switch when an obstacle contacts. Also good. In addition, an optical sensor can be provided at the entrance to detect an obstacle.
[0024]
The control means 4 is connected to a forced closing switch (SW) 3d as an operation switch for other functions of the operation means 3. When the forced closing SW 3d is operated, the control unit 4 lowers the shutter 1 by its own weight in a forced closing mode different from the normal time (normal mode in which the disaster prevention signal is received and waited).
The forced closing SW 3d constitutes a forced closing instruction means for lowering the weight of the shutter.
[0025]
FIG. 3 is a circuit diagram showing the internal configuration of the control means 4. This circuit only describes the configuration related to the connection release means 10 related to the forced closing mode, and other control circuits such as driving of the switch M are not shown.
The external power supply AC is rectified by the power supply circuit 20 and output to the drive circuit 25 side. An auxiliary power supply 21 is provided inside the power supply circuit 20 and is configured to be switched to the auxiliary power supply 21 when the supply of the external power supply AC is interrupted by the switching circuit 22.
[0026]
The switching circuit 22 holds the drive relay R1 that is energized when the external power supply AC is supplied and the state that the drive relay R1 is switched to the external power supply AC during the energization period of the drive relay R1. It consists of two relay contacts R1-1 and R1-2 that switch to the 21 side.
The auxiliary power source 21 is composed of a secondary battery that is charged during the supply period of the external power source AC. The auxiliary power source 21 is connected to the drive circuit 25 for a predetermined time corresponding to the capacity immediately after the external power source AC is disconnected. Power can be supplied.
[0027]
In the drive circuit 25, the power supply (DV 24V) supplied from the power supply circuit 20 is connected to the drive relay R2 and the forced closing SW 3d. Since the forced closing SW 3d is a normally open contact, the drive relay R2 is in a non-energized state at normal times.
Correspondingly, in the normal state, the relay contacts R2-2 and R2-3 are kept switched to the input terminal 30 side of the disaster prevention signal. When a disaster prevention signal is input in this state, the disaster prevention signal is output to the connection release means 10 via the input terminal 30 to the output terminal 31 (the shutter 1 falls by its own weight).
[0028]
On the other hand, when the forced closing SW 3d is operated due to a fire or the like, the drive relay R2 is energized, the relay contacts R2-2 and R2-3 are switched, and the power from the power circuit 20 is output to the connection release means 10. The weight of the shutter 1 can be lowered.
The self-holding relay contact R2-1 is provided in parallel with the forcibly closing SW3d. After the drive relay R2 is energized, the self-holding relay contact R2-1 is in a self-holding state, and the forced closing SW3d Even if the operation is released, the power supply to the connection release means 10 is continued and can be continued until the shutter 1 is fully closed.
[0029]
The disaster prevention signal control panel 27 has an auxiliary power supply 28 inside, and continuously supplies a predetermined voltage to the input terminal 30 when receiving the disaster prevention signal.
The auxiliary power supply 28 is configured by a secondary battery or the like that stores an external power supply in a normal state, and has the same configuration as the auxiliary power supply 21 provided in the power supply circuit 20. The auxiliary power supply 21 can also be configured to use the auxiliary power supply 21. .
[0030]
The forced closing SW 3d is provided with a normally closed contact return SW 3e in series. By operating the return SW 3e after the shutter 1 is fully closed, the energized state from the power supply circuit 20 side to the drive relay R2 is cut off, the relay contacts R2-2 and R2-3 are switched, and the normal state (waiting for input of the disaster prevention signal) State).
[0031]
The connection release means 10 is provided with a detection unit 15 b of the obstacle detection means 15. That is, a power source for operating the detection unit 15b is always obtained by the external power source AC or a disaster prevention signal via the control means 4. This makes it possible to detect obstacles when all shutters 1 are opened and closed, such as when the external power supply AC is supplied and when a disaster prevention signal is received, and further after the forced closing SW 3d is pressed. Although details are omitted, when the sensing unit 15a senses an obstacle and the sensing unit 15b receives this sensing signal, the control unit 4 executes a predetermined obstacle sensing control. In order to stop at least the shutter 1 that is being opened / closed, the opening / closing machine M is controlled to stop (the brake of the brake mechanism 6 may be activated simultaneously).
The detection unit 15 b is not limited to being provided inside the connection release unit 10, but may be configured to be provided outside the connection release unit 10 as a configuration in which the operation power supply is obtained from the output terminal 31 of the control unit 4.
[0032]
Next, the operation | movement concerning the forced closure of the shutter 1 by the said structure is demonstrated using the flowchart of FIG. 4, FIG.
The control means 4 determines whether or not the external power supply AC is supplied (S1). In the state in which the external power supply AC is supplied (S1-NO), the power supply from the commutator 2 of the power supply circuit 20 to the drive relay R1 is in a continuous state. At this time, the relay contact R1-1 is kept switched to the external power supply AC side, and the power supply circuit supplies a predetermined voltage (DC24V) to the drive circuit 25 side based on the external power supply AC (S3).
[0033]
On the other hand, when the external power supply AC is cut off due to a power failure or the like (S1-YES), the power supply from the commutator 2 to the drive relay R1 is cut off, and the relay contact R1-1 is switched to the auxiliary power supply 21 side. Then, the predetermined voltage is supplied from the auxiliary power source 21 to the drive circuit 25 side (S2).
As described above, the predetermined power is continuously supplied to the drive circuit 25 side regardless of whether or not the external power supply AC is supplied.
[0034]
In this state, the disaster prevention signal from the outside is in a standby state, and the control unit 4 controls the opening and closing of the shutter 1 in the normal mode based on the operation of the operation switch 3.
That is, in the drive circuit 25, the drive relay R2 is not energized when the forced closing SW 3d is not operated, and the relay contacts R2-2 and R2-3 are held in a state of connecting the input terminal 30 and the output terminal 31. And is on standby for disaster prevention signals.
[0035]
When a disaster prevention signal is input from the outside due to a fire or the like (S4-YES), the disaster prevention signal is output from the output terminal 31. As a result, the predetermined voltage of the disaster prevention signal is input to the connection release unit 10 and the detection unit 15b of the obstacle detection unit 15.
In response to the input of the disaster prevention signal, the connection release means 10 projects the release pin 11 to release the brake, lowers the shutter 1 by its own weight, and closes the entrance (S5, S6-NO, S7).
[0036]
When the shutter 1 comes into contact with an obstacle when the weight of the shutter 1 is lowered (S6-YES), the obstacle sensing unit 15 causes the control unit 4 to stop the shutter 1 based on the sensing signal input to the detection unit 15b. Outputs a stop signal. At this time, the connection release means 10 retracts the release pin 11 to connect the clutch 7 and applies the brake. Based on the input of the stop signal, the control means 4 cuts off the power supplied to the switch M and immediately stops the shutter 1 (S8).
Note that the detection unit 15b may have a circuit configuration in which a relay contact is interposed to directly disconnect a part of the power supply line for driving the switch M in the control unit 4.
[0037]
As described above, even when the shutter 1 falls by its own weight when the disaster prevention signal is input, the obstacle sensing means 15 can sense the obstacle.
Thereafter, when the obstacle sensing state at the doorway is released (S9-YES), the obstacle sensing means 15 returns to the obstacle non-sensing state, and the connection release means 10 projects the release pin 11 to connect the clutch. The shutter 1 is released and the shutter 1 is lowered again (S10). After this, if no obstacle is detected (S6-NO), if it is lowered to the fully closed position (S7-YES), the process ends.
The fully closed state of the shutter 1 may be detected using lower limit position detection means such as a limit switch as will be described later.
It is determined that the shutter 1 is fully closed by monitoring that the obstacle is not detected (S6-NO) for a predetermined time, and the power supply to the disconnection means 10 is automatically shut off and the release pin 11 is saved. It is also possible to return to the initial state in which the clutch 7 is engaged.
[0038]
The above apparatus can drop the shutter 1 by its own weight by operating the forced closing SW 3d without inputting a disaster prevention signal.
When the forced closing SW 3d is operated in the state where the disaster prevention signal is not input in the normal mode (S4-NO) (S11), the driving power from the power circuit 20 is supplied from the output terminal to the disconnection means 10 and the shutter. 1 falls by its own weight (S12).
[0039]
That is, the power output of the power supply circuit 20 is supplied to the drive relay R2, the relay contact R2-1 is closed, and the relay contact R2-1 in parallel with the forced close SW3d self-maintains the energized state of the drive relay R2.
At the same time, the relay contacts R2-2 and R2-3 are switched, and the power supply voltage of the power supply circuit 20 (external power supply AC or auxiliary power supply 21) is transferred from the output terminal 31 to the disconnection means 10 and the detection unit 15b of the obstacle detection means 15. Supplied.
[0040]
Based on the power supply from the power supply circuit 20, the connection release means 10 projects the release pin 11, releases the brake, lowers the shutter 1 by its own weight, and closes the entrance (S13, S14-NO, S15).
[0041]
If the shutter 1 comes into contact with an obstacle when the shutter 1 is lowered (S14-YES), the obstacle sensing means 15 causes the control means 4 to stop the shutter 1 based on the sensing signal input to the detection unit 15b. Outputs a stop signal. At this time, the connection release means 10 retracts the release pin 11 to connect the clutch 7 and applies the brake. Based on the input of the stop signal, the control means 4 cuts off the power supplied to the switch M and immediately stops the shutter 1 (S16).
As described above, even when the forced closing SW 3d is operated and the shutter 1 is lowered by its own weight, the obstacle sensing means 15 can sense the obstacle.
[0042]
Thereafter, when the obstacle sensing state at the doorway is released (S17-YES), it is possible to return to the normal state by operating the return SW 3e. When this return SW 3e is operated (S18-YES), the connection release means 10 can be returned to the normal state (S19).
Regarding this return, the power supply state to the connection release means 10 may be kept in the continuous state, or the power supply to the connection release means 10 may be cut off by pressing a specific key or the like as shown. For example, the power supply to the drive relay R2 is released by operating the return SW 3d, the self-holding state by the relay contact R2-1 is released, the relay contacts R2-2 and R2-3 are switched, and the output terminal 31 is input. The power supply from the power supply circuit 20 is cut off by being connected to the terminal 30. Thereby, the connection cancellation | release means 10 returns to the reception standby state of a disaster prevention signal.
[0043]
After this, if no obstacle is detected (S14-NO), if it is lowered to the fully closed position (S15-YES), the process is terminated. The fully closed state of the shutter 1 may be detected by using a lower limit position detecting means described later. Even if the return operation in S18 is not performed, it is determined that the shutter 1 is fully closed by monitoring that an obstacle is not detected (S14-NO) for a predetermined period of time, and the connection release means 10 is automatically selected. It is also possible to return to the initial state in which the clutch 7 is engaged by cutting off the power supply and retracting the release pin 11.
[0044]
The control means 4 described above selects a predetermined power supply from the outside and an auxiliary power supply based on a predetermined condition when a power supply is required for the movement control at the start and during the movement of the opening / closing body. It was set as the structure used. This movement control is control such as movement start, stop, resumption, and reversal. A specific example of power supply selection will be described. 1. If a predetermined power supply is supplied from the outside (disaster prevention signal in the description of the above embodiment), this power is used at least at the start of control. However, when a predetermined power supply is not supplied from the outside, such as when a forced closing SW is pressed. Select auxiliary power.
2. When the supply of a predetermined power supply from the outside is interrupted, the power supply is switched to an auxiliary power supply. In this case, unless the supply of predetermined supply power is interrupted from the outside until the opening / closing body is fully closed or fully opened, the auxiliary power supply is not switched as a result.
3. Until the passage of time at a predetermined intermediate position of the closure (for example, to a position where it is normally considered that no obstacle is touched), a predetermined power supply is used from the outside, and thereafter, whether or not the predetermined power supply is supplied from the outside. Switch to auxiliary power.
4). The start of closing is performed with the power of a predetermined power supply from the outside, and then the auxiliary power supply is used immediately after switching to the auxiliary power supply until the end of full closure or the like.
5. An external signal (in the case of a predetermined power supply from the outside or in the case of a control signal) is simply used as a power supply switching timing, and an auxiliary power supply is used from the detection of the signal and the start of closing until full closing.
6). A means to monitor the supply status (voltage value and current value) of the specified supply power from outside is provided. When the monitored voltage value or current value decreases, it is determined that the specified supply power supply has been cut off from the outside. Switch to power.
[0045]
Further, in the above description, the weight drop of the shutter 1 due to the operation of the connection release means 10 is configured to be executed by electrical control based on the disaster prevention signal or the power supply from the power supply circuit 20, but not limited thereto, The weight can be lowered by the mechanical operation of pulling the other end of the wire 9 described above. Further, if the pulling of the wire 9 is returned while the weight of the shutter 1 is dropping due to electrical control, the shutter 1 can be stopped immediately.
[0046]
The operation for lowering the own weight using the wire 9 is another example of the forced closing instruction means for lowering the weight of the shutter by the same manner as the operation of the forced closing SW 3d described above. Therefore, a configuration may be adopted in which a detection unit that electrically detects the pulling of the wire 9 is provided to generate the same state as when the forced closing SW 3d is operated when the pulling of the wire 9 is detected.
In this case, as a specific example on the circuit shown in FIG. 3, a relay contact (normally open) is provided in parallel with the forced closing SW 3d, and the parallel relay contact is closed when the pulling of the wire 9 is detected by the detecting means. What is necessary is just composition.
[0047]
Further, even after the shutter 1 is lowered by its own weight based on the disaster prevention signal, the connection release means 10 can be returned by the return operation by the return SW 3e. In this case, after the weight of the shutter 1 is lowered in S9, once the forced closing SW3d is operated to supply power from the power supply circuit 20 to the connection release means 10, and then the return SW3e is operated, S17 The connection release means 10 can be returned by the same operation as described.
[0048]
Although not shown, a lower limit position detection unit that detects the closed state of the shutter 1 may be provided. By detecting the lower limit position of the shutter 1, it is possible to determine whether the obstacle sensing means 15 senses an obstacle or a floor surface, and it is possible to judge the end state in S7 and S15.
The lower limit position detection means detects the lower limit position of the shutter 1 by, for example, detecting a movement position of the shutter 1 by a limit SW provided between the lower portions of the guide rail, a pair of light projecting / receiving sensors, and a rotation number count of the switch M.
According to the above configuration, if the lower part (seat plate) of the shutter 1 is landed on the floor surface, it can be determined that the obstacle is not detected, and at the same time, the connection releasing means 10 can be automatically returned.
[0049]
In the above embodiment, the disaster prevention signal control panel 27 (auxiliary power supply 28) is used on the assumption that the disaster prevention signal is supplied only for a short time such as a single pulse. However, in the configuration in which the disaster prevention signal is continuously supplied. The configuration of the disaster prevention signal control panel 27 is not necessary, and the signal line of the disaster prevention signal may be directly connected to the input terminal 30 of the control means 4.
[0050]
By the way, in the said embodiment, since the shutter 1 is the structure closed naturally by dead weight fall, the switch M is not concerned at all about this natural closure. Therefore, in this invention, it can also be set as the structure which does not use the opening-and-closing machine M but only the shutter 1 is closed naturally.
On the other hand, when the obstacle sensing means 15 of the present invention senses an obstacle, the shutter 1 is reversely driven in the opening direction, periodically receives a disaster prevention signal, performs a descent drill, or is fully opened at the time of installation. When there is a need to do this, a configuration using the switch M may be used.
[0051]
In the above embodiment, the fire shutter that moves up and down as the opening / closing body has been described as an example. However, the present invention is not limited to this and can be applied to a normal shutter and a lateral shutter. Further, the same effects can be obtained when the present invention is applied not only to the shutter but also to a sliding door. Furthermore, although an example in which the weight is lowered (closed) by the elevating shutter has been described, in a configuration in which the door is urged to the closing side by a door provided with an urging means, the door is closed by the connection release operation of the connection release means 10. It will be possible to naturally close to the limit position. Similarly, when it is biased to the open side, it can be naturally released to the open side by a connection release operation.
As another example of the opening and closing body that is naturally opened, it is normally hung up and kept in a fully closed state, but when a predetermined signal is received, the hung state is released and opened by its own weight drop. .
[0052]
【The invention's effect】
According to the present invention, since the operation power source for the connection release means can be always supplied from either a predetermined power source or an auxiliary power source from the outside, the opening / closing body can be immediately lowered by its own weight.
Further, the configuration provided with the obstacle sensing device makes it possible to sense the obstacle when the weight of the opening / closing body is lowered. Further, by supplying power for operation from the auxiliary power source to the obstacle sensing device, it becomes possible to sense the obstacle regardless of whether external power is supplied or not when the opening / closing body is lowered.
In addition, a forced closing instruction means is provided, and in normal times a predetermined supply power supply is waited to be input from the outside. When the dead weight is instructed using the forced closing instruction means, the operation power supply is supplied regardless of the supply state of the external power supply. If it is set as the structure which supplies this to a connection cancellation | release means, an opening-and-closing body will be compulsorily able to carry out weight fall at the instructed arbitrary time.
Further, it is possible to supply the commercial power supply or auxiliary power to the disconnection means by the weight drop instruction of the forced closing instruction means, and to lower the weight of the opening / closing body without monitoring the supply state of the external power supply itself. become.
In addition, when the opening / closing body driving means is provided and an obstacle is detected when the weight of the opening / closing body is lowered, the opening / closing body can be reversed.
Further, when a predetermined signal is input from the outside, the operation power source is switched to the auxiliary power source, and the weight of the opening / closing body can be lowered by using the auxiliary power source.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of an opening / closing body control device according to the present invention.
FIG. 2 is a partially enlarged view of the switch.
FIG. 3 is a circuit diagram showing an internal configuration of a control means.
FIG. 4 is a flowchart showing an automatic closing operation (part 1).
FIG. 5 is a flowchart showing the automatic closing operation (part 2).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Opening-closing body (shutter), 3 ... Operation means, 3d ... Forced closing SW, 3e ... Reset SW, 4 ... Control means, 6 ... Brake mechanism, 8 ... Brake release lever, 9 ... Wire, 10 ... Connection release means, DESCRIPTION OF SYMBOLS 11 ... Release pin, 15 ... Obstacle detection means, 15a ... Sensing switch, 15b ... Detection part, 20 ... Power supply circuit, 21 ... Auxiliary power supply, 22 ... Switching circuit, 25 ... Drive circuit, 27 ... Disaster prevention signal control board, 28 ... Auxiliary power supply, 30 ... (disaster prevention signal) input terminal, 31 ... output terminal, M ... switch.

Claims

Connection release means for releasing the stop state of the opening and closing body and lowering the weight of the opening and closing body by supplying power for operation ,
When a power supply is required for the movement control at the start and during the movement of the opening / closing body, a predetermined external power supply and an auxiliary power source are selected and used based on a predetermined condition. and control means for moving in the predetermined direction of the closing member is actuated the connection release means based on a command move in a direction,
Equipped with a,
The power supply circuit connected to the external power supply is provided with the auxiliary power supply, and when the supply of the external power supply is interrupted, the auxiliary power supply is switched to,
In the normal mode for receiving and receiving the disaster prevention signal, the drive relay is in a non-energized state, the relay contact is kept switched to the input terminal side of the disaster prevention signal, and when the disaster prevention signal is input in this state, A predetermined voltage of the disaster prevention signal is output to the connection release means via the input terminal, and the opening / closing body is lowered by its own weight,
The control means is connected to a forced closing instruction means, and the control means is different from the normal mode in which the disaster prevention signal is waited to be received even when the disaster prevention signal is not input when the forced closing instruction means is operated. It becomes a closed mode and lowers the weight of the opening and closing body,
When the forced closing instruction means is operated, the power output of the power supply circuit is supplied, the drive relay is energized, the relay contact is switched, and the power from the power supply circuit is supplied to the disconnection means. An opening / closing body control device that outputs and lowers the weight of the opening / closing body by its own weight .

2. The opening and closing according to claim 1 , wherein in the normal mode, the control means detects the operation of the operating means, and controls the opening and closing of the switch by the external power source to open and close the opening and closing body in the same operation direction. Body control device.

The self-holding relay contact is provided in parallel with the forced closing instruction means, and the self-holding relay contact is in a self-holding state after the drive relay is energized. The opening-closing body control apparatus of description .

The disaster prevention signal control panel connected to the input terminal side of the control means has an auxiliary power supply, and continuously supplies a predetermined voltage to the input terminal when receiving the disaster prevention signal. Item 4. The opening / closing body control device according to item 1 or 2 or 3 .

5. The forced closing instruction means is provided with a return switch in series, and the relay contact is switched to return to the normal mode by operating the return switch. The opening / closing body control apparatus as described in any one .

An obstacle sensing means for sensing an obstacle when the opening and closing body is opened and closed; and when the obstacle sensing means senses an obstacle when the weight of the opening and closing body is lowered in the forced closing mode, the control means The opening / closing body control device according to any one of claims 1, 2, 3, 4 and 5, wherein the lowering of the opening / closing body is stopped .

The said forced closing instruction | indication means is a wire provided with the detection means which electrically detects the tension | pulling which is a mechanical operation, Any one of Claim 1, 2, 3, 4, 5, 6 characterized by the above-mentioned. The opening / closing body control apparatus described in 1 .