【０００１】
【発明の属する技術分野】
本発明は、円弧状扉の開閉機構の技術に係わり、更に詳しくは、垂直円弧状側壁を有する仕切区画またはエレベータの籠等の円弧状側壁に開口する出入口の壁面に沿って円周方向に移動する、片開き式または両開き或いは伸縮開閉式などの円弧状扉開閉機構の構造に関するものである。
【０００２】
【従来の技術】
円弧状扉は、円筒形の籠を有するエレベータ等にその採用例が知られている。その開閉機構の先行技術に関しては、円筒形エレベータの籠の天井に突出する中心軸の上端に、アームの基端側を水平回動自在に支持し、このアームの先端側は、側壁に開口する出入口の片開き式円弧状扉の上端に固着するとともに、該アームの中間部にリンク部材の一端を回動可能に連結し且つ該リンク部材の他端をモータに取り付けたクランクに連結して、このクランクの回転をリンク部材を介しアームに伝え、扉が籠の側壁円弧面に沿って円周方向に移動する様に構成した機構が知られている（例えば、特許文献１参照。）。また、円筒形エレベータの籠の側壁に開口する出入口に２枚構成からなる伸縮開閉式円弧状扉を設けた場合の扉開閉機構の例としては、円弧状扉の円弧中心即ち籠の中心の上部に、２本のアームのそれぞれの基端側を水平回動自在に支持し、この各アームの先端を２枚の円弧状扉の上端にそれぞれ取り付けるとともに、該各アーム中間部の互いに異なる半径位置にリンク部材の一端を回動可能にそれぞれ連結し、且つ該各リンク部材の他端をモータの軸端に取り付けたクランクの先端部と中間部にそれぞれ連結し、このクランクの回転をリンク部材を介しアームに伝え、２枚の伸縮開閉式扉が籠の側壁の円弧面に沿って円周方向に連動して伸縮開閉するように構成した機構が知られている（例えば、特許文献２参照。）。
【０００３】
【特許文献１】
特開昭５６−１０３０８１号公報（第１図）
【特許文献２】
実公昭４６−３５１４９号公報（第１図）
【０００４】
【発明が解決しようとする課題】
前記従来の円弧状扉の開閉機構はいずれも、円弧状側壁の円弧の中心即ち籠の天井壁の中心から円弧状扉上端に至る長さ固定の長大アームを有し、且つこのアームは、籠中心を支点として円弧状扉との連結部の移動軌跡を臨む大きな扇形域を回動し、且つ該アームの中間部に連結したリンク部材の移動域および該リンク部材に連結したクランクの回動域も大きい。これら各部材の回動域と移動域は、これらの部材との干渉を生じないよう他の機材等の設置を避け、或いは他の機材を設置する場合は相当な制約を伴う。ところがエレベータの籠などでは天井壁上面を各種センサーや制御機器類の設置にも利用し、前記のような広い面積を占有する扉開閉機構は、床面積の小さな住宅用エレベータ等に採用すると大きな障害となるのみならず、上記のような長大なアームは、必要強度と剛性確保のため重量が重くなるとともに開閉駆動モータや扉への負担が大きくなる。従って、大きな籠のエレベータや建造物等の仕切区画で大きな曲率半径の壁面には上記に例示する扉とその開閉機構を設けることは困難である。
【０００５】
また、一般のビル用エレベ−タは、昇降路側乗降口扉と籠出入口扉は開閉モータを各々個別に設けることが多く、必然的に電力消費量も多い。しかし住宅用エレベータなど限られた用途の小規模小型エレベータでは、車椅子での利用に便利なように旋回式エレベータのニーズが高く、小型化と重量軽減とコスト低減と節電と保守費用低減をはかることが極めて重要で、その一環として円弧状の乗降口扉と籠の出入口扉とを狭いスペースで簡単安価な機構で連動開閉させる機構が求められている。
【０００６】
前述の状況に鑑み、本発明が解決しようとするところは、円弧状側壁を有する仕切区画またはエレベータの籠等の円弧状側壁に開口する出入口の壁面に沿って円周方向に移動する、片開き式または両開き或いは伸縮開閉式などの円弧状扉において、円弧状扉の開閉機構を狭いスペースに収めることが可能な扉開閉機構を提供する点にある。また本発明が解決しようとする他の課題は、円弧状出入口扉を有するエレベータの昇降路側乗降口扉の開閉手段を、簡単且つ低コストの機構で且つ設置スペースを必要とせずしかも消費電力が少ない方法で実現する点にある。
【０００７】
【課題を解決するための手段】
前述の課題解決のため、本発明では、側壁の少なくとも一部が垂直円弧状をなし、該円弧状側壁に円弧面に沿って円周方向に移動する円弧状扉を有する出入口を設けてなる仕切区画またはエレベータの籠を形成する一方、円弧状扉の開閉機構は、前記円弧状扉の上端に伸縮アームの一端を回動自在に連結するとともに、前記円弧状扉の円弧面を円周の一部となす円筒の中心線よりも円弧状扉寄りの位置を支点として前記伸縮アームの他端側を前記仕切区画またはエレベータの籠の天井壁上部に左右回動可能に枢止し、且つ該伸縮アームの前記支点部には、前記伸縮アームを回動させる駆動手段を設けて構成した。
【０００８】
上記の扉開閉機構は、扉の開閉に追従してアーム長が変化するため、回動支点を扉側に大きく近づけることが可能となり、アーム回動のために占有する扇状域が大幅に縮小して天井壁上の利用スペースを広くするのみならず、アームの支点位置を出入口開口中心と円弧状扉の円弧面を円周の一部となす円筒の中心線とを通る垂直面から偏心した位置に定めることも可能で、天井壁上に設置する機器の配置スペースを広く確保できる。
【０００９】
出入口扉が２枚構成の片開き式円弧状扉の場合の扉開閉機構場は、前記各円弧状扉の上端にそれぞれ伸縮アームの一端を回動自在に連結するとともに、該各伸縮アーム連結部がそれぞれの扉における扉全開から全閉まで移動する軌跡の中間点と前記円弧状扉の円弧面を円周の一部となす円筒の中心線を通る垂直平面上における前記中心線よりも円弧状扉寄りの位置をそれぞれの支点として、前記各伸縮アームの他端側を前記籠などの仕切区画の天井壁上部に左右回動可能に枢止し、且つ該各伸縮アームの前記支点部には、それぞれの扉全開から全閉までを同方向にほぼ同じ所要時間で回動させる連動駆動手段を設けて構成する。
【００１０】
なお、前記の連動駆動手段は、各伸縮アームの回動支点にそれぞれプーリーまたは歯車を伸縮アームと一体的に取り付けるとともに、この各プーリーまたは各歯車の直径の比率が、扉全開から全閉までの各伸縮アームの回動角度の比率と反比例の関係となる様に設定し、前記各プーリーにはベルトを巻き掛けて、または前記各歯車には両者にアイドル歯車をかみ合わせて、前記ベルトまたはいずれかの歯車に適宜の手段で駆動モータの回転を伝え、前記各伸縮アームがそれぞれの扉全開から全閉までを同方向に同じ行程所要時間で回動するように構成すると都合がよい。
【００１１】
一方、同幅２枚構成の両開き式円弧状扉の場合の扉開閉機構場は、前記各円弧状扉の互いの対向端から等距離の上端にそれぞれ伸縮アームの一端を回動自在に連結するとともに、前記出入口の中央とその前記円弧状扉の円弧面を円周の一部となす円筒の中心線とを通る垂直面に対し対称の位置を支点として前記仕切区画または籠の天井壁上部に前記各伸縮アームの他端側を左右回動可能に枢止し、且つ該各伸縮アームの前記支点部には、同一の１対の歯車の互いの片方をそれぞれ取り付けて互いに対向方向に回転するように噛み合わせ、前記２枚の扉が同速で対向開閉する様に構成する。
【００１２】
円弧状側壁に形成した出入口に１枚以上の構成からなる円弧状扉を有し、該円弧状扉の上端をそれぞれ伸縮アームを介して扉開閉用連動駆動手段に連結した構成からなる籠と、籠の扉と同心の円弧状で且つ同じ配置構成からなる扉を、籠の扉の外側に近接対峙する様にして円周方向に移動可能に昇降路側壁の開口に設置した乗降口とを有してなるエレベータを構成し、このエレベータの乗降口扉の開閉機構は、籠の各扉にその外周に突起を突設する一方、乗降口扉のそれぞれの内周面には、前記籠が着床した際の前記籠の扉の突起と対面する位置に該突起に係合する係合部をそれぞれ設け、前記籠の扉に従動して開閉する構成とする。
【００１３】
【発明の実施の形態】
つぎに本発明の実施の形態を添付図面に基づき更に詳細に説明するが、本発明は、添付図面に示された形態に限定されず特許請求の範囲に記載の要件を満たす実施形態の全てを含むものである。図１は、本発明に係る片開き式円弧状扉の扉開閉機構の実施例を示し、仕切区画天井壁を上から見た部分平面図である。以下同様に、図２は２枚構成の伸縮開閉型片開き式円弧状扉の扉開閉機構の実施例、図３は２枚構成の伸縮開閉型片開き式円弧状扉の扉開閉機構の別の実施例、図４は２枚構成の両開き式円弧状扉の扉開閉機構の実施例を示す。なお、以下に記載する本願発明の実施の形態の説明において、「円弧状側壁またはその側壁と同心円の円弧状扉の円弧面を円周の一部となす円筒の中心、またはその円筒の中心線」を略して単に「円弧中心」または「円弧中心線」とも記載し、「伸縮アーム」を略して単に「アーム」とも記載し、「円弧状扉」を略して単に「扉」とも記載する。
【００１４】
本願請求項１の発明に係る実施形態を図１に示すが、仕切区画１は側壁の一部が垂直円弧状をなし、該円弧状側壁２には円弧面に沿って円周方向に移動可能に支持され円弧状側壁２と同心円の円弧をなす片開き式円弧状扉４を有する出入口３を設けている。この図は仕切区画１の円弧状扉４とその扉開閉機構６を上方から見た部分平面図で、この図と同様の構成は例えば図５〜８に示す旋回式エレベータ４０の籠４６の円弧状出入口扉とその扉開閉機構にも適用が可能である。
【００１５】
なお、円弧状扉４の支持構造については、図１では図示しないが、図６〜８に例示す旋回式エレベータ４０の籠４６の出入口扉４９，４９ａと同様に構成すればよい。即ち、図６から８において、旋回式エレベータ４０の籠４６は、円弧状の前後壁４８，４８の各出入口３，３それぞれの上方には円弧壁に沿って取り付けた円弧状上部案内レール５０と、下方には円弧壁に沿って取り付けた円弧状下部案内レール５１とを有し、円弧状出入口扉４９，４９ａはこの両案内レール５０，５１に沿って円周方向に移動可能に支持する。その支持構造は種々の方式が選択できるが、例えば図７のように、円弧状出入口扉４９，４９ａの上端部には前記上部案内レール５０に沿って転動可能なフックローラー５２を円弧に沿って複数取り付ける一方、下端部には前記下部案内レール５１に形成した円弧状溝に嵌合して円弧方向に移動可能に支持する（図８参照）。なお、前記円弧状扉４，４９，４９ａの支持に関しては、以下に記載する本願発明に係る他の各実施形態においても同様の構造を採用可能で、２枚構成の伸縮開閉式円弧状扉の場合には、上部と下部の案内レールは図６などに示すようにそれぞれ２列構成にすればよい。
【００１６】
円弧状扉４の開閉機構６は、円弧状扉４上端の扉閉側の側端寄りに伸縮アーム７の一端を連結ピン８で回動自在に連結するとともに、出入口３のほぼ中心と円弧状側壁２の円弧中心とを結ぶ直線上の円弧中心よりも円弧状扉４寄りの位置を支点として伸縮アーム７の他端側を仕切区画１の天井壁５上部に左右回動可能に枢止し、且つ伸縮アーム７の前記支点部（回動支点）９には、プーリー１２を伸縮アーム７と一体的に回転するように取り付ける一方、プーリー１２近傍の仕切区画１の天井壁５上面に出力軸端にプーリー１２を取り付けた駆動モータ１４を設置し、この駆動モータ１４のプーリー１２と前記伸縮アーム７の支点部９のプーリー１２とにベルト１３を巻き掛けて駆動モータ１４の回転で伸縮アーム７を回動するように構成している。駆動モータ１４については、種々の型式を適宜選択可能だが、通常は電動機を用い、必要に応じ適宜の減速機を介在し、その出力軸端にプーリー１２を固着して構成する。
【００１７】
上記構成からなる扉開閉機構６においては、伸縮アーム７の回動支点９を円弧状側壁２の円弧中心よりも大幅に円弧状扉４側に寄せている。従って、駆動モータ１４で伸縮アーム７を矢印Ａの方向に回動させると円弧状扉４が矢印Ｂの方向に開き、その動作に伴い伸縮アーム７の回動支点９から扉への連結部８までの距離が変化するが、円弧状扉４が開閉する際の伸縮アーム７の回動支点９と連結部８との間の距離の変化に合わせて伸縮アーム７がその長さを自動的に変えて追従する。つまり、扉開閉機構６を円弧状扉４に近い位置に寄せて設置することが可能となり、それによって、仕切区画１の天井壁５の上部に自由に利用できるスペースを広く確保し、且つ重量の重い長大アームを回動させる必要がなく、扉開閉駆動モータ１４や円弧状扉４への負担を軽減することが可能である。
【００１８】
伸縮アーム７は、直線状のロッド部７ｂとこのロッド部を長手方向に進退自在に支持する鞘部７ａとを有し、且つその一端には円弧状扉４に回動自在に連結する連結ピン８等の適宜の連結手段を設け、他端側には仕切区画１の天井壁５上部に水平回動可能に枢止して回転力を伝達するための垂直の支軸１０または回動可能な支持手段を設けた基本構成からなるが、伸縮アーム７は、上記機能を有する適宜の市販部品を組み合わせて構成することも可能である。この伸縮アーム７は、円弧状扉４の上端部に一端を連結ピン８で水平回動可能に連結するとともに、基端側を仕切区画１の天井壁２上部に支軸１０で水平回動可能に支持し、支軸１０には伸縮アーム７と一体的に回転するようにプーリー１２を取り付ける。
【００１９】
伸縮アーム７の円弧状扉４への連結位置は、円弧状扉４の上端の適宜の位置でよく、また、伸縮アーム７の回動支点９となる枢止位置は、伸縮アーム７の円弧状扉４への連結部８の扉全開から全閉までの移動軌跡のほぼ中間と円弧状側壁２の円弧中心とを結ぶ直線上に設定すればよい。但し、伸縮アーム７は、円弧状扉４の開閉に伴う回転半径の変化に追従して長さが変化可能なため、回動支点９は上記の直線上から偏心した位置に設定することも可能である。
【００２０】
ベルト１３とプーリー１２については、例えば、内周面に突起を等間隔配置した通称タイミングベルト等と、このベルト内周面の突起が嵌合する凹部を周面に等間隔に形成したプーリーとで構成するほか、ローラーチェーンとスプロケットまたは歯車とピニオンからなる伝動機構など適宜の伝動手段に代えてもよい。
【００２１】
上記説明において、伸縮アーム７の基本構成と、円弧状扉４上端部への連結構造と、仕切区画１の天井壁５上部への取付構造と回動支点９を円弧中心よりも円弧状扉４側に寄せることの位置関係、並びに伸縮アーム７を用いることによる作用効果（即ち、仕切区画天井壁上部の自由に利用できるスペースを広く確保できる効果と、短い伸縮アームで回動する事に伴う駆動モータ１４や円弧状扉４への負担軽減効果など）については、以下に順次記載する本願発明の別の実施形態においても同様である。ただし、伸縮アーム７の支点部９に取り付けるプーリー１２については、以下に記載の各実施形態の説明のように、これを歯車に代える場合もある。また、上記説明において、伸縮アーム７を回動する伝動手段としてのベルト１３とプーリー１２を他の伝動手段に置き代えることについても、以下に順次記載する本願発明の別の実施形態について同様である。そして、駆動モータ１４の構成についても、以下に順次記載する本願発明の別の実施形態において同様である。従って以下に記載する説明では、これらの同様の構成または同様の構造からなる部分に関して重複説明は省略する。
【００２２】
つぎに、図２は、本願請求項２の発明に係る実施形態を示し、仕切区画１の側壁の一部が垂直円弧状をなし、該円弧状側壁２に円弧面に沿って円周方向に伸縮移動可能に支持され円弧状側壁２と同心円の円弧をなすほぼ同幅２枚構成の片開き式円弧状扉２０，２１を有する出入口３を設けてなる仕切区画１の円弧状扉２０，２１の開閉機構６ａを上方から見た部分平面図で、同様の構成を有する円弧状エレベータの籠の円弧状扉とその開閉機構にも適用が可能である。
【００２３】
この扉開閉機構６ａは、各円弧状扉２０，２１のそれぞれの上端部の戸袋（開いた円弧状扉が位置する場所）とは反対側の側端寄りに伸縮アーム２２，２３のそれぞれの一端を回動自在に連結するとともに、伸縮アーム２２，２３の連結部２３ａ，２３ａが扉全開から全閉まで移動するそれぞれの軌跡の中間点と前記円弧状側壁２の円弧中心線を結ぶ各垂直平面上における前記中心線よりも円弧状扉２０，２１寄りの位置をそれぞれの支点として、伸縮アーム２２，２３のそれぞれの他端側を仕切区画１の天井壁５上部に左右回動可能に枢止し、且つ各伸縮アーム２２，２３の支点部（回動支点２２ｂ，２３ｂ）には、それぞれプーリー２４，２４を伸縮アーム２２，２３と一体的に回転するように取り付ける一方、プーリー２４，２４近傍の仕切区画１の天井壁５上部に出力軸端にプーリー２４を取り付けた駆動モータ１４を設置し、この駆動モータ１４のプーリー２４と前記伸縮アーム２２，２３の回動支点２２ｂ，２３ｂのプーリー２４，２４とにベルト２５を巻き掛けて、駆動モータ１４の回転により、伸縮アーム２２，２３をそれぞれの扉全開から全閉までを同方向にほぼ同じ所要時間で連動して回動させる連動駆動手段２６を構成している。
【００２４】
上記において、ほぼ同幅２枚構成からなる伸縮開閉片開き式円弧状扉２０，２１の連動駆動手段２６は、扉閉端側の第１扉２０と戸袋側の第２扉２１にそれぞれ連結された伸縮アーム２２，２３は、それぞれの扉の全開から全閉までの全行程の回動角度がほぼ等しく且つ全行程の伸縮アーム２２，２３のどの回動角度においてもそれぞれの伸縮アーム２２，２３の長さがほぼ２対１の比になる点をそれぞれの回動支点２２ｂ，２３ｂとして枢止され、且つ伸縮アーム２２，２３の回動支点２２ｂ，２３ｂに一体的回転可能に取り付けられたそれぞれのプーリー２４，２４は、互いに同じ直径に設定している。このことによって、第１扉２０の開閉速度に対し第２扉２１の開閉速度は全行程を通じてほぼ２対１の速度比でほぼ同じ所要時間で連動開閉する。
【００２５】
また、ベルト２５とプーリー２４に関しては、スリップにより互いの回転位相に狂いが生じないようにするため、前述の例のように、通称タイミングベルトを用いた伝動機構のほか、ローラーチェーンを用いた伝動機構、歯車とその歯車に噛み合うアイドル歯車を介しピニオンで駆動する歯車伝動機構など適宜の方式が選択可能である。
【００２６】
つぎに、図３は、本願請求項３の発明に係る実施形態を示し、仕切区画１の側壁の一部が垂直円弧状をなし、該円弧状側壁２に図２に示すものと同様な構成の円弧状側壁２と同心円の円弧をなす円弧状扉２０，２１とその開閉用伸縮アーム２２，２３を設け、伸縮アーム２２，２３の連動駆動手段２６ａを図２とは別の形態で構成している。図３は円弧状扉２０，２１の扉開閉機構６ｂを上方から見た部分平面図で、同様の構成を有する旋回エレベータの籠の円弧状扉とその開閉機構にも適用が可能である。
【００２７】
この実施例の伸縮アームの連動駆動手段２６ａは、各円弧状扉２０，２１に連結した伸縮アーム２２，２３の回動支点位置２２ｃ，２３ｃが、それぞれの伸縮アーム２２，２３の円弧状扉２０，２１への連結部２２ａ，２３ａの扉全開から全閉までの移動軌跡の中間点と円弧の中心線とを結ぶ垂直平面上に設定するが、前述の図２の場合と異なり、各伸縮アーム２２，２３の回動支点２２ｃ，２３ｃの位置を、扉全開から全閉までのそれぞれの全行程における各伸縮アーム２２，２３それぞれの回動角度が互いに一致しない位置に定める場合に適用する。
【００２８】
この伸縮アームの連動駆動手段２６ａは、各伸縮アーム２２，２３の回動支点２２ｃ，２３ｃには伸縮アーム２２，２３と一体的に回転する歯車２７，２７ａをそれぞれ取り付けるとともに、互いの歯車２７，２７ａの直径の比率が円弧状扉２０，２１の全開から全閉までの各伸縮アーム２２，２３の回動角度の比率と反比例の関係となる様に設定し、各歯車２７，２７ａには両者に噛み合うアイドル歯車２７ｂを介在させ、このアイドル歯車２７ｂにはこれと一体的に回転するプーリー２７ｃを取り付ける一方、駆動モータ１４の出力軸端のプーリー２４とアイドル歯車２７ｂに取り付けたプーリー２７ｃとの間にベルト２８を巻き掛けて駆動モータ１４の回転を伸縮アーム２２，２３に伝えるように構成している。
【００２９】
この実施例の伸縮アーム２２，２３の連動駆動手段２６ａは、伸縮アーム２，２３のそれぞれの全回動角度とそれぞれの歯車２７，２７ａの直径を上記の関係に設定して両歯車２７，２７ａにアイドル歯車２７ｂを噛み合わせたことにより、各伸縮アームは互いに同方向に且つ各扉のそれぞれの全開から全閉までの全行程をほぼ同じ所要時間で回動する。即ち、この場合も前記の実施例と同様、扉閉側の第１扉２０と戸袋側の第２扉２１のそれぞれの開閉速度を２対１の速度比に設定してほぼ同じ所要時間で連動開閉することができる。
【００３０】
この場合の伸縮アーム２２，２３の駆動手段として、図示の例では、アイドル歯車２７ｂの軸にアイドル歯車２７ｂと一体的に回転するプーリー２７ｃを取り付けるとともに、出力軸端にプーリー２７ｃを取り付けた駆動モータ１４を仕切区画１の天井壁５上部に設置し、両プーリー２７ｃ，２７ｃにベルト２８を巻き掛けて駆動モータ１４で回動するように構成している。アイドル歯車２７ｂ側のプーリー２７ｃは、アイドル歯車２７ｂに限らず他の歯車２７または２７ａの軸に取り付けてもよく、また、このプーリー２７ｃとベルト２８は、前述のように他の適宜の伝動手段に代えてもよい。
【００３１】
つぎに、図４は、本願請求項４の発明に係る実施形態を示し、側壁の一部が垂直円弧状をなし、該円弧状側壁２に円弧面に沿って円周方向に移動可能に支持し円弧状側壁２と同心円の円弧をなすほぼ同幅２枚構成の両開き式円弧状扉３０，３０ａを有する出入口３を設けてなる仕切区画１の扉開閉機構６ｃを上方から見た部分平面図で、同様の構成を有する旋回式エレベータの籠の円弧状扉とその開閉機構にも適用が可能である。
【００３２】
この扉開閉機構６ｃは、各円弧状扉３０，３０ａの互いの対向端から等距離の上端部にそれぞれ伸縮アーム３２，３２ａの一端を水平方向に回動自在に連結するとともに、その他端側を出入口３の中央とその円弧面の中心線とを結ぶ垂直面に対し左右対称位置を回動支点３３，３３ａとして仕切区画１の天井壁５上部に左右回動可能に枢止し、且つ各伸縮アーム３２，３２ａの回動支点３３，３３ａには、同一の１対の歯車３４，３４の互いの片方をそれぞれ取り付けて互いに対向方向に回転するように噛み合わせた構成の連動駆動手段３１を有する。
【００３３】
なおこの場合の連動駆動手段３１は、歯車３４，３４のいずれか一方にプーリー３４ａを歯車３４と一体的に回転するように取り付けるとともに、このプーリー３４ａと駆動モータ１４の出力軸端に取り付けたプーリー３４ａとの間にベルト３５を巻き掛けて駆動モータ１４で伸縮アーム３２，３２ａを駆動するように構成している。但し、図示の例とは異なり、歯車３４，３４のいずれか一方にピニオンを直接噛み合わせるてこのピニオンを駆動モータで直接的に或いはベルトまたはチェーン等を介し間接的に回転させる構成としてもよい。
【００３４】
この扉開閉機構６ｃは、上記のように構成したことにより２枚の扉を同速で対向方向に開閉することができる。また、伸縮アーム３２，３２ａの伸縮作用により回動支点位置を円弧状側壁２の円弧中心よりも円弧状扉３０，３０ａ寄りに設定可能である。そのため前述の各発明の実施形態と同様に、天井壁５上部の自由な利用スペースを広く確保することが可能ある。
【００３５】
つぎに、図５〜８は、本願請求項５の発明に係る実施形態を示し、円弧状レール５０，５１に支持された円弧状出入口扉４９，４９ａとこれと同心円の円弧をなす円弧状レール４４，４４ａに支持された円弧状乗降口扉４３，４３ａとを有する旋回式エレベータ４０の、籠４６の出入口扉４９，４９ａに従動して開閉する乗降口扉４３，４３ａの扉開閉機構５３の一例を上方から見た部分平面図である。図示の部分は、旋回式エレベータ４０の昇降路４１内の籠４６が、籠４６の出入口扉４９，４９ａと昇降路４１の乗降口扉４３，４３ａが対面して着床した状態を上から見た状態で示す。なお、出入口扉４９，４９ａの扉開閉機構５３は、一例として、前述の図２の扉開閉機構６ａと同じ機構を採用した場合を示す。なお、図６には図５の扉開閉機構５３を備えた旋回式エレベータ４０を、昇降路４１の上方から見た平面を示し、図７には図６の旋回式エレベータ４０の籠４６の出入口を支持枠４６ａの左右方向に向け、左方から見た籠の正面を示し、更に図８には図６の旋回式エレベータ４０の籠４６を支持枠４６ａの背面から見た側面を示している。
【００３６】
図において、籠４６の出入口扉４９，４９ａの扉開閉機構５３は、籠の前後壁即ち垂直の円弧状側壁４８部に円弧方向に伸縮開閉可能に支持されたほぼ同幅２枚構成の片開き式の円弧状出入口扉４９，４９ａを有する出入口を設け、この出入口扉４９，４９ａは、前述の図２に対する説明のように、上端部をそれぞれ伸縮アーム２２，２３を介し籠４６の天井４７上部に設置した扉開閉駆動モータ１４に連結した構成からなる扉開閉機構５３を有している。一方、昇降路４１の乗降口側４２は、籠４６の出入口扉４９，４９と同心の円弧状で且つ同じ枚数の同じ配置構成からなる乗降口扉４３，４３ａを籠４６の出入口扉４９，４９ａの外側に近接対峙する様にして円周方向に移動可能に昇降路４１の側壁乗降口４２に支持して構成している。籠４６の各出入口扉４９，４９ａには外周に突起５４をそれぞれ突設する一方、乗降口扉４３，４３ａのそれぞれの内周面には、籠４６が着床した際の籠４６の出入口扉４９，４９ａの突起５４と対面する位置に各突起５４に係合する係合部材４５をそれぞれ設け、各乗降口扉４３，４３ａが籠４６の出入口扉４９，４９ａにそれぞれ従動して開閉するように構成している。
【００３７】
上記係合部材４５の構造を詳しく説明すると、係合部材４５は、適宜の間隔で垂直に対向する対向側面を有するとともに、その対向側面間は出入口扉４９，４９ａの突起５４が自由に昇降方向に通過可能で、且つ、出入口扉４９，４９ａが左右に開閉する際には突起５４が係合部材４５の対向側面の片方に当接するように構成されている。これにより、籠４６が停止階に着床して籠の出入口扉４９，４９ａが開閉する際には、出入口扉４９，４９ａの各突起５４が乗降口扉４３，４３ａの各係合部材４５の対向側面の片方に当接して乗降口扉４３，４３ａを従動開閉することができる。なお、この係合部材４５への乗降口扉の突起５４の出入りと通過を円滑にする手段として、図示は省略するが係合部材４５の前記対向側面の片面または両面にはローラーを配設してもよい。
【００３８】
図示は省略するが上記の例以外に、籠４６の出入口扉４９，４９ａが１枚構成の片開き式の場合、または２枚の扉が対向開閉する両開き式扉の場合、その他これらに準ずるいずれの形態でもよい。そして乗降口扉は、籠の出入口扉と同心の円弧状で且つ同じ枚数同じ配置構成にするとともに、籠の出入口扉に近接対峙する様にして円周方向に移動可能に昇降路４１の側壁の乗降口４２に支持して構成し、且つ、籠の出入口扉のそれぞれの外周には突起を突設する一方、乗降口扉のそれぞれの内周面には、前述の説明と同様の構造と機能を有する係合部材を同様の要領で設ける。この構成により、乗降口扉は籠の出入口扉に従動して開閉させることができる。
【００３９】
住宅用など小規模のエレベータにおいては、昇降路スペースを狭くして且つ車椅子での利用に便利なように旋回式エレベータを採用し、乗降口と籠の出入口の幅を広く確保し、且つ極力軽量で電力消費の少ない設計にする必要がある。旋回式エレベータは殆どの場合、籠の出入口を円弧状の垂直壁とし昇降路の乗降口扉も円弧状にする。従って、上記の様に、籠の円弧状出入口扉の開閉機構で乗降口の円弧状扉を従動開閉させる機構を旋回式エレベータに採用すると、扉開閉用駆動モータを個別に設けるよりも昇降路を狭く設計でき、更に駆動モータの数が減ることで電力効率が向上し節電され、また、伸縮アームを用いる扉開閉機構は簡単且つ小型軽量の機構で広い設置面積や作動域をとらず、籠の天井壁上部の自由に利用できるスペースを広く確保することができ、しかも低価格のエレベータを提供することが可能となる。
【００４０】
上記の各発明に係るそれぞれの実施形態のいずれの場合も、扉の全開位置と全閉位置で扉開閉用駆動モータを停止させる手段として、図示のように機械的リミットスイッチまたは近接スイッチ、光センサー式スイッチ、ポテンショメータなど適宜の手段を用い、これによって扉の開閉完了を検知しその信号をもとに駆動モータを停止させるように制御器を構成すると都合がよい。その検知手段の一例として、扉開閉検知用の機械的リミットスイッチ１５，１５の取り付け状態を図１〜５にそれぞれ示している。機械的リミットスイッチ１５，１５ローラーレバーの傾きで内部の接点がＯＮ／ＯＦＦするスイッチで、その配置構成はそれぞれの実施例で若干異なるが基本的には各実施例ともほぼ共通している。即ち、伸縮アーム（例えば図２の符号２２など）には回動支点（例えば図２の符号２２ｂなど）から後方に延長する延長部を設け、伸縮アームが扉の全閉と全開の位置に回動した際に、この伸縮アームの回動支点よりも扉（例えば図２の符号２０）側の側面（全閉時）と延長部の側面（全開時）にリミットスイッチ１５，１５のいずれか一方のローラーレバーが当接して作動を検知する様にリミットスイッチ１５，１５の設置位置を設定して扉全開用と全閉用のそれぞれの機械的リミットスイッチを仕切区画１またはエレベータの籠４６の天井壁５（４７）上部に設置している。リミットスイッチの設置個所は、図示の例に限らず伸縮アームの回動支点よりも扉よりの位置にのみ設置してもよい。また、伸縮アームの回動支点に伸縮アームと連動回転するカム板などを取り付け、このカム板などによって作動する様に位置設定したリミットスイッチまたは近接スイッチ或いは光センサー式スイッチを取り付けてもよい。
【００４１】
【発明の効果】
請求項１に係る発明の円弧状扉の開閉機構は、円弧状扉の上端部に伸縮アームを連結し、円弧状扉の円弧面を円周の一部となす円筒の中心線よりも円弧状扉に近い位置にその伸縮アームの回動支点を設け、この伸縮アームの支点部を扉開閉用駆動モータで駆動する構成としたので、円弧状扉の開閉に追従して伸縮アーム長が変化するため回動支点を扉側に大きく近づけることが可能となり、伸縮アーム回動のために占有する扇状域が大幅に縮小され、天井壁上の利用スペースを広く確保でき、更に、伸縮アームを用いたことにより、扉の開閉に追従してアーム長が変化し、伸縮アームの支点位置を出入口開口中心と円弧面の中心とを結ぶ垂直面から偏心した位置に定めることも可能で、天井壁上に設置する機器の配置がし易すくなるといった作用効果がある。
【００４２】
また、請求項２に係る発明の円弧状扉の開閉機構は、円周方向に伸縮移動する２枚構成の片開き式円弧状扉の上端にそれぞれ伸縮アームの一端を回動自在に連結するとともに、該各アームの連結部がそれぞれの扉における扉全開から全閉まで移動する軌跡の中間点と円弧状扉の円弧面を円周の一部となす円筒の中心線とを通る垂直平面上における前記中心線よりも扉寄りの位置をそれぞれの支点として伸縮アームの他端側を天井壁上部に左右回動可能に枢止し、且つ該各伸縮アームの支点部には、それぞれの円弧状扉の扉全開から全閉までを同方向にほぼ同じ所要時間で回動させる連動駆動手段を設けたので、開閉端寄りの円弧状扉と戸袋寄りの円弧状扉とはほぼ２対１の速度比を維持して全開から全閉までの行程をそれぞれ同じ時間で開閉するとともに、円弧状扉の開閉に追従してアーム長が変化するので回動支点を扉側に大きく近づけることが可能となり、且つ戸袋側の扉のアームはアーム回動のために占有する扇状域が大幅に縮小され、天井壁上の利用スペースを広く確保できるといった作用効果がある。
【００４３】
また、請求項３に係る発明の円弧状扉の開閉機構は、前記２枚構成の伸縮開閉式扉における連動駆動手段を、前記各伸縮アームの回動支点にそれぞれプーリーまたは歯車を伸縮アームと一体的に取り付けるとともに、この各プーリーまたは各歯車の直径の比率が、扉全開から全閉までの各伸縮アームの回動角度の比率と反比例の関係となる様に設定し、その両プーリーにはベルトを巻き掛けて、または両歯車には両者にアイドル歯車を噛み合わせて、前記のベルトまたはいずれかの歯車に適宜の手段で駆動モータの回転を伝えるように構成することにより、各円弧状扉をそれぞれの全開から全閉まで同方向に同じ行程所要時間で回動させることが可能となる。即ち、各部材を上記の関係に設定すれば各伸縮アームの支点と円弧状扉への連結部との距離を適宜変更しても、伸縮アームの回動角度域に応じたプーリー径または歯車径に設定することで、各円弧状扉をそれぞれの全開から全閉まで同方向に同じ行程所要時間で回動させる機構を容易に構成することが可能である。
【００４４】
また、請求項４に係る発明の円弧状扉の開閉機構は、同幅２枚構成の両開き式円弧状扉の互いの対向端から等距離の上端にそれぞれ伸縮アームの一端を回動自在に連結するとともに、出入口開口の中央と円弧状扉の円弧面を円周の一部となす円筒の中心線とを通る垂直面に対し対称の位置を支点として天井壁上部に前記各伸縮アームの他端側を左右回動可能に枢止し、且つ伸縮アーム支点部には、同一の１対の歯車の互いの片方をそれぞれ取り付けたので、例えばこの歯車同士を噛み合わせるなどにより互いに対向方向に回転するように構成したので、２枚の円弧状扉を同速で対向して開閉させることが可能である。
【００４５】
また、請求項５に係る発明のエレベータの円弧状乗降口扉の開閉機構は、籠の各円弧状扉の外周に突起を突設する一方、昇降路の乗降口には籠の出入口扉と近接対峙して乗降口扉と同じ配置構成からなる円弧状の乗降口扉を設けそれぞれの内周面には、前記籠が着床した際の前記籠の扉の突起と対面する位置に該突起に係合する係合部をそれぞれ設け、前記籠の扉に従動して開閉するように構成したので、籠の扉の突起が乗降口扉に係合部に係合すると、乗降口扉は籠の扉の開閉機構のモータで籠の扉に従動開閉させることができ、且つ、乗降口扉に専用モータを備えるよりも効率がよく消費電力を節減できる。つまり、乗降口扉開閉機構を、籠側出入口扉に従動して開閉して合理的且つ消費電力が少ない低コストの機構で実現できた。
【図面の簡単な説明】
【図１】本発明に係る片開き式円弧状扉の開閉機構の実施例を示し、仕切区画天井壁を上から見た部分平面図である。
【図２】本発明に係る２枚構成の伸縮開閉型片開き式円弧状扉の開閉機構の実施例を示し、仕切区画天井壁を上から見た部分平面図である。
【図３】本発明に係る２枚構成の伸縮開閉型片開き式円弧状扉の開閉機構の別の実施例を示し、仕切区画天井壁を上から見た部分平面図である。
【図４】本発明に係る２枚構成の両開き式円弧状扉の開閉機構の実施例を示し、仕切区画天井壁を上から見た部分平面図である。
【図５】本発明に係るエレベータの円弧状出入口扉と円弧状乗降口扉との連動開閉機構の実施例を示し、籠の天井壁を上から見た部分平面図である。
【図６】図５の連動開閉機構を備えた旋回式エレベータを、昇降路の上方から籠上面を見た平面図である。
【図７】図６のエレベータの籠の出入口を支持枠の左右方向に向け、左方から見た籠の正面図である。
【図８】図６のエレベータの籠を支持枠の背面から見た側面図である。
【符号の説明】
１ 仕切区画
２ 円弧状側壁
３ 出入口
４ 円弧状扉
５ 天井壁
６，６ａ、６ｂ、６ｃ 扉開閉機構
７ 伸縮アーム
７ａ 鞘部
７ｂ ロッド部
７ｃ 延長部
８ 連結部（連結ピン）
９ 回動支点（支点部）
１０ 支軸
１１ 駆動手段
１２ プーリー
１３ ベルト
１４ 駆動モータ（扉開閉モータ）
１５ リミットスイッチ
２０ 円弧状扉（第１扉）
２１ 円弧状扉（第２扉）
２２ 伸縮アーム
２２ａ 連結部
２２ｂ，２２ｃ 回動支点
２３ 伸縮アーム
２３ａ 連結部
２３ｂ，２３ｃ 回動支点
２４ プーリー
２５ ベルト
２６，２６ａ 連動駆動手段
２７，２７ａ 歯車
２７ｂ アイドル歯車
２７ｃ プーリー
２８ ベルト
３０，３０ａ 円弧状扉
３１ 連動駆動手段
３２，３２ａ 伸縮アーム
３３，３３ａ 回動支点
３４ 歯車
３４ａ プーリー
３５ ベルト
４０ 旋回式エレベータ
４１ 昇降路
４２ 乗降口
４３，４３ａ 乗降口扉
４４，４４ａ 円弧状レール
４５ 係合部材
４６ 籠
４６ａ 支持枠
４７ 天井
４８ 前後壁（円弧状側壁）
４９，４９ａ 出入口扉
５０ 円弧状レール（上部案内レール）
５１ 円弧状レール（下部案内レール）
５２ フックローラー
５３ 扉開閉機構
５４ 突起[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology of an opening / closing mechanism of an arc door, and more specifically, moves in a circumferential direction along a wall surface of an entrance opening to an arc side wall of a partition section having a vertical arc side wall or an elevator cage. The present invention relates to a structure of an arc-shaped door opening / closing mechanism such as a single-opening type, a double-opening type, or a telescopic opening and closing type.
[0002]
[Prior art]
2. Description of the Related Art An example of adopting an arc-shaped door in an elevator having a cylindrical basket is known. Regarding the prior art of the opening / closing mechanism, the base end side of the arm is horizontally rotatably supported at the upper end of a central shaft protruding from the ceiling of the cage of the cylindrical elevator, and the tip end side of the arm opens to the side wall. Affixed to the upper end of the one-sided arcuate door at the entrance, one end of the link member is rotatably connected to the middle part of the arm, and the other end of the link member is connected to the crank attached to the motor, A mechanism is known in which the rotation of the crank is transmitted to an arm via a link member so that the door moves in a circumferential direction along an arc surface of a side wall of the basket (for example, see Patent Document 1). Further, as an example of a door opening / closing mechanism provided with a two-piece retractable opening / closing arc-shaped door at an entrance opening to a side wall of a cage of a cylindrical elevator, an arc center of the arc-shaped door, that is, an upper part of the center of the basket. And the base ends of the two arms are horizontally rotatably supported, and the ends of the arms are respectively attached to the upper ends of the two arc-shaped doors, and different radial positions of the intermediate portions of the arms are provided. One end of a link member is rotatably connected to each of the link members, and the other end of each link member is connected to a tip end portion and an intermediate portion of a crank attached to a shaft end of a motor. A mechanism is known in which two telescoping doors are conveyed to an arm via an arm and are extended and contracted in the circumferential direction along the arc surface of the side wall of the basket (see, for example, Patent Document 2). ).
[0003]
[Patent Document 1]
JP-A-56-103081 (FIG. 1)
[Patent Document 2]
Japanese Utility Model Publication No. 46-35149 (FIG. 1)
[0004]
[Problems to be solved by the invention]
Each of the conventional opening / closing mechanisms for an arc-shaped door has a long arm having a fixed length from the center of the arc of the arc-shaped side wall, that is, the center of the ceiling wall of the basket to the upper end of the arc-shaped door. Rotating a large fan-shaped area facing the movement trajectory of the connecting portion with the arc-shaped door with the center as a fulcrum, and moving the link member connected to the intermediate part of the arm and the rotating area of the crank connected to the link member Is also big. The rotation area and the movement area of these members have considerable restrictions when avoiding the installation of other equipment or the like when installing other equipment so as not to cause interference with these members. However, in elevator cages, etc., the upper surface of the ceiling wall is also used for installing various sensors and control equipment, and the door opening and closing mechanism that occupies a large area as described above is a major obstacle if it is adopted for a residential elevator with a small floor area. In addition to the above, the long arm as described above becomes heavy in order to secure necessary strength and rigidity, and also increases the load on the opening / closing drive motor and the door. Therefore, it is difficult to provide the door and the opening / closing mechanism for the above-described example on a wall surface having a large radius of curvature in a partition section of a large cage elevator, a building, or the like.
[0005]
Also, in general elevators for buildings, the hoistway-side entrance doors and the basket entrance doors are often provided with opening / closing motors individually, and the power consumption is inevitably large. However, for small-scale small elevators with limited applications such as residential elevators, there is a strong need for a swivel elevator so that it is convenient for use in a wheelchair, and it is necessary to reduce the size, weight, cost, power saving and maintenance cost. As a part of this, there is a need for a mechanism that opens and closes an arc-shaped entrance / exit door and a basket entrance / exit door in a small space with a simple and inexpensive mechanism.
[0006]
In view of the above situation, the present invention seeks to solve the problem of a one-sided opening that moves in a circumferential direction along a wall surface of an entrance and an exit opening in an arc-shaped side wall such as a partition having an arc-shaped side wall or an elevator cage. An object of the present invention is to provide a door opening / closing mechanism that can accommodate an opening / closing mechanism for an arc-shaped door in a narrow space in an arc-shaped door such as a double-sided, double-opening, or telescopic opening / closing type. Another problem to be solved by the present invention is that the opening / closing means of the hoistway-side entrance / exit door of an elevator having an arc-shaped entrance / exit door is a simple and low-cost mechanism, requires no installation space, and has low power consumption. The point is that it is realized by the method.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention, at least a part of a side wall has a vertical arc shape, and a partition having an entrance having an arc door moving in a circumferential direction along an arc surface is provided on the arc side wall. While forming a section or an elevator cage, the arc-shaped door opening and closing mechanism rotatably connects one end of a telescopic arm to the upper end of the arc-shaped door and connects the arc surface of the arc-shaped door to a circle. The other end side of the telescopic arm is pivotally fixed to the partition wall or the upper part of the ceiling wall of the elevator cage so as to be rotatable left and right around a position closer to the arc-shaped door than the center line of the cylinder forming the part. A drive unit for rotating the telescopic arm is provided at the fulcrum of the arm.
[0008]
In the above door opening and closing mechanism, the arm length changes following the opening and closing of the door, so that the rotation fulcrum can be made much closer to the door side, and the fan-shaped area occupied for the arm rotation is greatly reduced. Not only widen the space used on the ceiling wall, but also the fulcrum position of the arm is eccentric from the vertical plane passing through the center of the entrance opening and the center line of the cylinder that forms the arc surface of the arc door as a part of the circumference. It is also possible to secure a wide space for arranging devices to be installed on the ceiling wall.
[0009]
A door opening / closing mechanism in the case where the entrance door is a single-opening arc-shaped door having a two-piece configuration, comprises connecting one end of a telescopic arm to the upper end of each of the arc-shaped doors in a rotatable manner, and connecting each of the telescopic arm connecting portions. Is more arcuate than the center line on a vertical plane passing through the center point of the trajectory where each door moves from fully open to fully closed and the center line of a cylinder forming a part of the circumference of the arc surface of the arc door. With the position near the door as a fulcrum, the other end side of each of the telescopic arms is pivotably pivoted to the upper part of the ceiling wall of a partition section such as the basket, and the fulcrum part of each of the telescopic arms is And interlocking drive means for rotating the respective doors from fully open to fully closed in the same direction for substantially the same required time is provided.
[0010]
In addition, the interlocking driving means is configured such that a pulley or a gear is integrally attached to the rotation fulcrum of each telescopic arm and the telescopic arm, respectively, and a ratio of a diameter of each pulley or each gear is from a fully opened door to a fully closed door. The pulleys are set so as to be in inverse proportion to the rotation angle ratio of each telescopic arm, a belt is wound around each pulley, or an idle gear is meshed with each of the gears, and the belt or any one It is convenient to transmit the rotation of the drive motor to the gears by appropriate means so that the telescopic arms rotate in the same direction from the full opening to the full closing of the respective doors in the same stroke required time.
[0011]
On the other hand, in the case of a double-opening arcuate door having the same width of two, the door opening / closing mechanism field rotatably connects one end of a telescopic arm to an upper end equidistant from the opposite end of each of the arcuate doors. Along with the center of the entrance and the vertical plane passing through the center line of the cylinder forming a part of the circumference of the arc surface of the arc-shaped door as a fulcrum, at the upper part of the ceiling wall of the partition or basket. The other end of each of the telescopic arms is rotatably pivoted to the left and right, and one of the same pair of gears is attached to the fulcrum of each of the telescopic arms to rotate in opposite directions. The two doors open and close at the same speed.
[0012]
A basket having a configuration in which one or more arc-shaped doors are formed at entrances and exits formed in the arc-shaped side walls, and upper ends of the arc-shaped doors are respectively connected to door opening / closing interlocking driving means via telescopic arms; A door having a concentric arc shape and the same arrangement as the basket door is provided at an opening in the side wall of the hoistway so as to be movable in the circumferential direction so as to be close to and facing the outside of the basket door. The opening / closing mechanism of the elevator doors of this elevator has a projection protruding from the outer periphery of each door of the cage, while the cage is attached to the inner peripheral surface of each door of the elevator door. An engaging portion that engages with the projection is provided at a position facing the projection of the door of the basket when floored, and the opening and closing is performed by following the door of the basket.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiment shown in the accompanying drawings, and all embodiments satisfying the requirements described in the claims are described. Including. FIG. 1 is a partial plan view showing an embodiment of a door opening / closing mechanism for a single-opening arc-shaped door according to the present invention, in which a partition wall ceiling wall is viewed from above. Similarly, FIG. 2 shows an embodiment of a door opening / closing mechanism of a two-piece telescopic opening / closing single-opening arc-shaped door, and FIG. 3 shows another example of a door opening / closing mechanism of a two-piece telescopic opening / closing single-opening arc-shaped door. FIG. 4 shows an embodiment of a door opening / closing mechanism of a two-parted double-opening arcuate door. In the following description of the embodiment of the present invention, "the center of a cylinder which forms a part of the circumference of the arc surface of the arc side wall or the arc surface of the arc door which is concentric with the side wall, or the center line of the cylinder""" And abbreviated as "arc center" or "arc center line", "elastic arm" is abbreviated simply as "arm", and "arc-shaped door" is abbreviated as simply "door".
[0014]
FIG. 1 shows an embodiment according to the invention of claim 1 of the present application. A partition section 1 has a part of a side wall formed in a vertical arc shape, and the arc side wall 2 is movable in a circumferential direction along an arc surface. The doorway 3 is provided with a single-opening arc-shaped door 4 which is supported by the side wall 2 and forms a concentric arc with the arc-shaped side wall 2. This figure is a partial plan view of the arc-shaped door 4 of the partition section 1 and the door opening / closing mechanism 6 as viewed from above, and the same configuration as in this figure is, for example, the circle of the basket 46 of the revolving elevator 40 shown in FIGS. The present invention can also be applied to an arc-shaped entrance door and its door opening / closing mechanism.
[0015]
Although not shown in FIG. 1, the support structure of the arc door 4 may be configured in the same manner as the entrance doors 49 and 49 a of the basket 46 of the revolving elevator 40 shown in FIGS. That is, in FIGS. 6 to 8, the cage 46 of the swivel-type elevator 40 includes an arc-shaped upper guide rail 50 attached along the arc wall above each of the entrances 3 of the arc-shaped front and rear walls 48, 48. An arc-shaped lower guide rail 51 attached along an arc wall is provided below the arc-shaped entrance / exit doors 49, 49a. The arc-shaped entrance doors 49, 49a are movably supported in the circumferential direction along the two guide rails 50, 51. Various types of support structures can be selected. For example, as shown in FIG. 7, a hook roller 52 that can roll along the upper guide rail 50 is provided at the upper end of the arc-shaped entrance doors 49, 49a along the arc. On the other hand, the lower end portion is fitted in an arc-shaped groove formed in the lower guide rail 51 and supported so as to be movable in an arc direction (see FIG. 8). Regarding the support of the arc-shaped doors 4, 49, 49a, a similar structure can be adopted in each of the other embodiments according to the present invention described below. In this case, the upper and lower guide rails may be formed in two rows as shown in FIG.
[0016]
The opening / closing mechanism 6 for the arc-shaped door 4 connects one end of the telescopic arm 7 to the upper end of the arc-shaped door 4 near the door closing side with a connecting pin 8 so as to be freely rotatable, and is substantially arc-shaped with the center of the entrance 3. The other end of the telescopic arm 7 is pivotally fixed to the upper part of the ceiling wall 5 of the partitioning section 1 so as to be rotatable left and right with the position closer to the arc door 4 as a fulcrum than the center of the arc on a straight line connecting the arc center of the side wall 2. A pulley 12 is attached to the fulcrum (rotation fulcrum) 9 of the telescopic arm 7 so as to rotate integrally with the telescopic arm 7, and an output shaft is provided on the upper surface of the ceiling wall 5 of the partition section 1 near the pulley 12. A drive motor 14 having a pulley 12 attached to an end thereof is installed. A belt 13 is wound around the pulley 12 of the drive motor 14 and the pulley 12 of the fulcrum 9 of the telescopic arm 7, and the telescopic arm 7 is rotated by the rotation of the drive motor 14. Is configured to rotate There. Various types of drive motors 14 can be selected as appropriate, but usually, a motor is used, a suitable speed reducer is interposed if necessary, and a pulley 12 is fixed to the output shaft end.
[0017]
In the door opening / closing mechanism 6 having the above configuration, the rotation fulcrum 9 of the telescopic arm 7 is moved closer to the arc door 4 than the arc center of the arc side wall 2. Therefore, when the telescopic arm 7 is rotated in the direction of arrow A by the drive motor 14, the arc-shaped door 4 opens in the direction of arrow B, and with the operation, the connecting portion 8 from the rotation fulcrum 9 of the telescopic arm 7 to the door. The telescopic arm 7 automatically adjusts its length according to the change in the distance between the pivot point 9 of the telescopic arm 7 and the connecting portion 8 when the arc-shaped door 4 opens and closes. Change and follow. In other words, the door opening / closing mechanism 6 can be installed at a position close to the arc-shaped door 4, thereby securing a wide free space above the ceiling wall 5 of the partitioning section 1 and reducing the weight. It is not necessary to rotate the heavy and long arm, and the burden on the door opening / closing drive motor 14 and the arc door 4 can be reduced.
[0018]
The telescopic arm 7 has a linear rod part 7b and a sheath part 7a that supports the rod part so as to be able to advance and retreat in the longitudinal direction, and a connecting pin that is rotatably connected to the arc-shaped door 4 at one end. 8 or the like, and a vertical support shaft 10 for transmitting a rotational force by being pivotally mounted on the upper end of the ceiling wall 5 of the partitioning section 1 on the other end side and transmitting a rotational force, or a rotatable rotatable member. Although it has a basic configuration provided with a support means, the telescopic arm 7 can also be configured by combining appropriate commercially available parts having the above functions. The telescopic arm 7 has one end connected to the upper end of the arc-shaped door 4 so as to be horizontally rotatable with a connecting pin 8, and the base end side is horizontally rotatable with the support shaft 10 above the ceiling wall 2 of the partitioning section 1. , And a pulley 12 is attached to the support shaft 10 so as to rotate integrally with the telescopic arm 7.
[0019]
The connecting position of the telescopic arm 7 to the arc-shaped door 4 may be an appropriate position at the upper end of the arc-shaped door 4, and the pivoting position serving as the rotation fulcrum 9 of the telescopic arm 7 is the arc-shaped position of the telescopic arm 7. What is necessary is just to set it on the straight line which connects the substantially middle of the movement locus of the connection part 8 to the door 4 from the door fully open to the door fully closed, and the arc center of the arc-shaped side wall 2. However, since the length of the telescopic arm 7 can be changed in accordance with a change in the radius of rotation caused by the opening and closing of the arc-shaped door 4, the rotation fulcrum 9 can be set at a position eccentric from the straight line. It is.
[0020]
As for the belt 13 and the pulley 12, for example, a so-called timing belt or the like in which protrusions are arranged at equal intervals on the inner peripheral surface, and a pulley in which concave portions in which the protrusions on the inner peripheral surface of the belt fit are formed at equal intervals on the peripheral surface. In addition to the configuration, an appropriate transmission means such as a transmission mechanism including a roller chain and a sprocket or a gear and a pinion may be used.
[0021]
In the above description, the basic structure of the telescopic arm 7, the connection structure to the upper end of the arc-shaped door 4, the mounting structure of the partition section 1 above the ceiling wall 5, and the rotation fulcrum 9 make the arc-shaped door 4 more than the center of the arc. The effect of using the telescopic arm 7 and the effect of using the telescopic arm 7 (that is, the effect of securing a wide free space above the ceiling wall of the partitioning section, and the driving caused by the rotation with the short telescopic arm) The effect of reducing the load on the motor 14 and the arc-shaped door 4 is the same in other embodiments of the present invention which will be sequentially described below. However, the pulley 12 attached to the fulcrum 9 of the telescopic arm 7 may be replaced with a gear as described in each embodiment described below. Further, in the above description, the belt 13 and the pulley 12 as the transmission means for rotating the telescopic arm 7 are replaced with another transmission means, which is the same as another embodiment of the present invention which will be sequentially described below. . The same applies to the configuration of the drive motor 14 in another embodiment of the present invention described below in order. Therefore, in the following description, a duplicate description of these parts having the same configuration or similar structure will be omitted.
[0022]
Next, FIG. 2 shows an embodiment according to the invention of claim 2 of the present application, in which a part of the side wall of the partition section 1 forms a vertical arc shape, and the arc side wall 2 is formed in a circumferential direction along an arc surface. The arc-shaped doors 20, 21 of the partition section 1 provided with the entrance 3 having two single-opening arc-shaped doors 20, 21 of approximately the same width, which are supported so as to be able to expand and contract and are concentric with the arc-shaped side wall 2. In a partial plan view of the opening / closing mechanism 6a viewed from above, the present invention can be applied to an arc door of a cage of an arc elevator having a similar configuration and its opening / closing mechanism.
[0023]
The door opening / closing mechanism 6a includes one end of each of the telescopic arms 22 and 23 near the side end opposite to the door pocket (where the open arc door is located) at the upper end of each of the arc doors 20 and 21. And a vertical plane connecting an intermediate point of each trajectory where the connecting portions 23a and 23a of the telescopic arms 22 and 23 move from fully open to fully closed and an arc center line of the arc side wall 2. With the positions closer to the arc-shaped doors 20 and 21 than the center line above as the fulcrum, the other end of each of the telescopic arms 22 and 23 is rotatably pivoted to the upper part of the ceiling wall 5 of the partitioning section 1. Pulleys 24, 24 are attached to the fulcrum portions (rotation fulcrums 22b, 23b) of the telescopic arms 22, 23, respectively, so as to rotate integrally with the telescopic arms 22, 23, while the pulleys 24, 24 are in the vicinity. A drive motor 14 having a pulley 24 attached to the output shaft end is installed above the ceiling wall 5 of the partition section 1, and the pulley 24 of the drive motor 14 and the pulleys 24 of the fulcrum 22 b, 23 b of the telescopic arms 22, 23 are provided. A belt 25 is wound around the belt 24 and the drive motor 14 rotates the telescopic arms 22 and 23 from the full opening to the full closing of the respective doors in the same direction in substantially the same required time to rotate in conjunction with each other. Is composed.
[0024]
In the above description, the interlocking drive means 26 of the telescopic open / close single-opening arc-shaped doors 20 and 21 having substantially the same two widths is connected to the first door 20 on the door closed end side and the second door 21 on the door pocket side, respectively. The telescopic arms 22 and 23 have substantially the same rotation angle in the entire stroke from full opening to full closing of each door, and have the respective telescopic arms 22 and 23 at any rotation angle of the telescopic arms 22 and 23 in the full stroke. Are fixed as pivot points 22b and 23b, respectively, at a point where the lengths thereof are approximately 2: 1, and are attached to the pivot points 22b and 23b of the telescopic arms 22 and 23 so as to be integrally rotatable. Pulleys 24, 24 are set to the same diameter as each other. Thus, the opening / closing speed of the second door 21 is interlocked with the opening / closing speed of the first door 20 at substantially the same required time at a speed ratio of approximately 2: 1 throughout the entire stroke.
[0025]
The belt 25 and the pulley 24 have a transmission mechanism using a so-called timing belt as well as a transmission mechanism using a roller chain, as described above, in order to prevent the rotation phases of the belt 25 and the pulley 24 from being deviated from each other. An appropriate system such as a mechanism, a gear and a gear transmission mechanism driven by a pinion via an idle gear meshing with the gear can be selected.
[0026]
Next, FIG. 3 shows an embodiment according to the invention of claim 3 of the present application, in which a part of the side wall of the partition section 1 forms a vertical arc shape, and the arc side wall 2 has the same configuration as that shown in FIG. 2 are provided with arc-shaped doors 20 and 21 which form concentric arcs with the arc-shaped side wall 2 and the telescopic arms 22 and 23 for opening and closing the doors. The interlocking drive means 26a for the telescopic arms 22 and 23 is formed in a form different from that of FIG. ing. FIG. 3 is a partial plan view of the door opening / closing mechanism 6b of the arc-shaped doors 20 and 21 as viewed from above, and can be applied to the arc-shaped door of a turning elevator cage having the same configuration and its opening / closing mechanism.
[0027]
The interlocking driving means 26a of the telescopic arm of this embodiment is configured such that the pivotal support points 22c, 23c of the telescopic arms 22, 23 connected to the respective arc-shaped doors 20, 21 are different from the arc-shaped doors 20 of the telescopic arms 22, 23. , 21 are set on a vertical plane connecting the midpoint of the movement trajectory from the fully opened to fully closed doors of the connecting portions 22a, 23a to the center line of the circular arc. However, unlike the case of FIG. The present invention is applied to a case where the positions of the rotation fulcrums 22c and 23c of the expansion arms 22 and 23 are set to positions where the rotation angles of the telescopic arms 22 and 23 do not coincide with each other in the respective full strokes from full opening to full closing of the door.
[0028]
The interlocking drive means 26a of the telescopic arm is provided with gears 27, 27a which rotate integrally with the telescopic arms 22, 23 at pivot points 22c, 23c of the telescopic arms 22, 23, respectively. The ratio of the diameter of 27a is set to be inversely proportional to the ratio of the rotation angles of the telescopic arms 22, 23 from the fully opened to the fully closed arc-shaped doors 20, 21. A pulley 27c that rotates integrally with the idle gear 27b is attached to the idle gear 27b, and between the pulley 24 at the output shaft end of the drive motor 14 and the pulley 27c attached to the idle gear 27b. A belt 28 is wound around the arm and the rotation of the drive motor 14 is transmitted to the telescopic arms 22 and 23.
[0029]
The interlocking driving means 26a of the telescopic arms 22 and 23 of this embodiment sets the total rotation angle of the telescopic arms 2 and 23 and the diameter of the gears 27 and 27a in the above-described relationship, and sets the two gears 27 and 27a. The telescopic arms rotate in the same direction with each other and on the entire stroke from full opening to full closing of each door in substantially the same required time. That is, also in this case, as in the above-described embodiment, the opening and closing speeds of the first door 20 on the door closed side and the second door 21 on the door pocket side are set to a speed ratio of 2 to 1 and linked in substantially the same required time. Can be opened and closed.
[0030]
In the illustrated example, as a driving means for the telescopic arms 22 and 23 in this case, a pulley 27c that rotates integrally with the idle gear 27b is attached to a shaft of the idle gear 27b, and a pulley 27c is attached to the output shaft end. 14 is installed above the ceiling wall 5 of the partitioning section 1, the belt 28 is wound around both pulleys 27 c, 27 c and the drive motor 14 turns. The pulley 27c on the side of the idle gear 27b may be attached not only to the idle gear 27b but also to the shaft of another gear 27 or 27a, and the pulley 27c and the belt 28 may be connected to other appropriate transmission means as described above. It may be replaced.
[0031]
Next, FIG. 4 shows an embodiment according to the invention of claim 4 of the present application, in which a part of the side wall has a vertical arc shape and is supported on the arc side wall 2 so as to be movable in a circumferential direction along an arc surface. FIG. 2 is a partial plan view of the door opening / closing mechanism 6c of the partition 1 provided with the entrance 3 having the double-opening arc-shaped doors 30 and 30a of substantially the same width and forming two concentric arcs with the arc-shaped side wall 2 as viewed from above. Thus, the present invention can be applied to an arc-shaped door of a swing elevator cage having a similar configuration and its opening / closing mechanism.
[0032]
The door opening / closing mechanism 6c connects one end of each of the telescopic arms 32, 32a to the upper end of each of the arc-shaped doors 30, 30a equidistant from the opposing end of each other so as to be rotatable in the horizontal direction, and connects the other end thereof. Left and right pivots are pivotally supported on the upper part of the ceiling wall 5 of the partitioning section 1 as pivot points 33 and 33a at right and left symmetric positions with respect to a vertical plane connecting the center of the entrance 3 and the center line of the arc surface thereof. The pivotal support points 33, 33a of the arms 32, 32a have an interlocking drive means 31 having a structure in which one of the same pair of gears 34, 34 is attached to each other and engaged so as to rotate in opposite directions to each other. .
[0033]
In this case, the interlocking driving means 31 includes a pulley 34a attached to one of the gears 34, 34 so as to rotate integrally with the gear 34, and a pulley attached to the pulley 34a and the output shaft end of the drive motor 14. The retractable arms 32 and 32a are configured to be driven by the drive motor 14 with the belt 35 wound around the belt 34a. However, unlike the illustrated example, a configuration may be employed in which a pinion is directly engaged with one of the gears 34 and 34 and the pinion is rotated directly by a drive motor or indirectly via a belt or a chain.
[0034]
The door opening / closing mechanism 6c can open and close the two doors at the same speed in the opposite direction due to the above configuration. Further, the rotation fulcrum position can be set closer to the arc door 30, 30a than the arc center of the arc side wall 2 by the expansion and contraction of the telescopic arms 32, 32a. Therefore, similarly to the above-described embodiments of the invention, it is possible to secure a wide free use space above the ceiling wall 5.
[0035]
Next, FIGS. 5 to 8 show an embodiment according to the invention of claim 5 of the present application, in which arc-shaped entrance doors 49, 49a supported by arc-shaped rails 50, 51 and arc-shaped rails forming concentric arcs with them. The door opening / closing mechanism 53 of the entrance / exit doors 43, 43a of the revolving elevator 40 having the arcuate entrance / exit doors 43, 43a supported by the 44, 44a and opening / closing following the entrance / exit doors 49, 49a of the basket 46. It is the partial top view which looked at an example from the upper part. The part shown in the figure is a top view of a state in which the basket 46 in the hoistway 41 of the revolving elevator 40 has landed with the entrance doors 49, 49a of the cage 46 facing the entrance doors 43, 43a of the hoistway 41. It is shown in a state where it is set. Note that the door opening / closing mechanism 53 of the entrance doors 49, 49a shows, as an example, the case where the same mechanism as the above-described door opening / closing mechanism 6a of FIG. 2 is adopted. 6 shows a plan view of the swivel elevator 40 provided with the door opening / closing mechanism 53 of FIG. 5 as viewed from above the hoistway 41. FIG. 7 shows the entrance of the basket 46 of the swivel elevator 40 of FIG. Is shown in the left and right direction of the support frame 46a, and shows the front of the basket viewed from the left. FIG. 8 shows a side view of the basket 46 of the swivel elevator 40 of FIG. 6 viewed from the back of the support frame 46a. .
[0036]
In the figure, a door opening / closing mechanism 53 of the entrance / exit doors 49, 49a of the basket 46 is a one-way opening of approximately two widths, which is supported on the front and rear walls of the basket, that is, the vertical arc-shaped side wall 48 so as to be able to expand and contract in the arc direction. An entrance having arcuate entrance / exit doors 49, 49a is provided. The entrance doors 49, 49a have their upper ends at the upper part of the ceiling 47 of the basket 46 via the telescopic arms 22, 23 as described with reference to FIG. And a door opening / closing mechanism 53 configured to be connected to the door opening / closing drive motor 14 installed in the vehicle. On the other hand, the entrance / exit side 42 of the hoistway 41 is connected to the entrance / exit doors 49, 49a of the cage 46 by the same number of the same arrangement configuration as the entrance / exit doors 43, 43a of a circular shape concentric with the entrance doors 49, 49 of the cage 46. And is supported by the side wall entrance / exit 42 of the hoistway 41 so as to be movable in the circumferential direction so as to face the outside of the vehicle. Each of the entrance doors 49, 49a of the basket 46 is provided with a projection 54 on the outer periphery thereof, while the entrance door of the basket 46 when the cage 46 has landed is provided on the inner peripheral surface of each of the entrance doors 43, 43a. Engaging members 45 are provided at positions facing the projections 49, 49a so as to be engaged with the projections 54, respectively, so that the doors 43, 43a are respectively opened and closed by following the doors 49, 49a of the basket 46, respectively. It is composed.
[0037]
The structure of the engaging member 45 will be described in detail. The engaging member 45 has opposing side surfaces vertically facing each other at appropriate intervals, and the protrusions 54 of the entrance doors 49, 49a freely move up and down between the opposing side surfaces. When the doors 49, 49 a open and close, the projection 54 abuts on one of the opposing side surfaces of the engaging member 45. Thereby, when the basket 46 is landed on the stop floor and the entrance doors 49, 49a of the basket are opened and closed, the projections 54 of the entrance doors 49, 49a are engaged with the engaging members 45 of the entrance doors 43, 43a. The entrance doors 43, 43a can be driven to open and close by contacting one of the opposing side surfaces. As a means for facilitating the entrance and exit of the projection 54 of the entrance door to and from the engagement member 45, a roller is disposed on one or both of the opposed side surfaces of the engagement member 45, although not shown. You may.
[0038]
Although illustration is omitted, in addition to the above example, in the case where the entrance doors 49 and 49a of the basket 46 are of a single-opening type, or in the case of a double-opening type in which two doors are opened and closed in a facing manner, any other equivalent thereto is used. May be used. The entrance door has a circular arc concentric with the entrance door of the basket and has the same number and the same arrangement, and is movable in the circumferential direction so as to be close to and facing the entrance door of the basket. The structure is supported by the entrance / exit 42, and a projection is provided on the outer periphery of each of the entrance doors of the basket, while the inner peripheral surface of each of the entrance / exit doors has the same structure and function as described above. Are provided in a similar manner. With this configuration, the entrance door can be opened and closed by following the entrance door of the basket.
[0039]
For small-scale elevators such as residential ones, a swivel-type elevator is used to reduce the space of the hoistway and make it easy to use in a wheelchair. It is necessary to design with low power consumption. In most cases, the swivel type elevator has an arc-shaped vertical wall at the entrance of the basket and an arc-shaped entrance door of the hoistway. Therefore, as described above, when a mechanism for opening and closing the arc-shaped door of the entrance / exit by the opening / closing mechanism of the arc-shaped entrance door of the basket is adopted in the revolving-type elevator, the hoistway can be reduced rather than providing a door opening / closing drive motor individually. It can be designed to be narrow, and the number of drive motors can be reduced to improve power efficiency and save power.In addition, the door opening and closing mechanism using the telescopic arm is a simple, compact and lightweight mechanism that does not take up a large installation area or operating area, and A wide free space above the ceiling wall can be secured, and a low-cost elevator can be provided.
[0040]
In any case of each of the embodiments according to the above inventions, as means for stopping the door opening / closing drive motor at the fully open position and the fully closed position of the door, a mechanical limit switch or proximity switch as shown in the drawing, an optical sensor It is convenient to configure the controller so as to detect the completion of opening and closing of the door by using appropriate means such as a type switch and a potentiometer, and to stop the drive motor based on the signal. As an example of the detection means, the mounting state of the mechanical limit switches 15 for opening and closing the door is shown in FIGS. The mechanical limit switches 15 and 15 are switches whose internal contacts are turned ON / OFF by the inclination of the 15 roller lever, and the arrangement is slightly different in each embodiment, but is basically almost common to each embodiment. That is, the telescopic arm (for example, reference numeral 22 in FIG. 2) is provided with an extension extending rearward from the pivot point (for example, reference numeral 22b in FIG. 2), and the telescopic arm is turned to the fully closed and fully open positions of the door. When moved, one of the limit switches 15, 15 is provided on a side surface (when fully closed) of the door (for example, reference numeral 20 in FIG. 2) and a side surface of the extension (when fully open) with respect to the pivot of the telescopic arm. The setting positions of the limit switches 15 and 15 are set such that the roller levers of the doors come into contact with each other to detect the operation, and the mechanical limit switches for fully opening and fully closing the door are set to the partition section 1 or the ceiling of the elevator cage 46. It is installed above the wall 5 (47). The installation location of the limit switch is not limited to the example shown in the figure, and may be installed only at a position closer to the door than the pivot of the telescopic arm. Alternatively, a cam plate or the like that rotates in conjunction with the telescopic arm may be attached to the pivot point of the telescopic arm, and a limit switch, proximity switch, or optical sensor type switch set to operate by the cam plate or the like may be attached.
[0041]
【The invention's effect】
The opening / closing mechanism for an arc-shaped door according to the first aspect of the present invention is configured such that a telescopic arm is connected to the upper end of the arc-shaped door, and the arc surface of the arc-shaped door is more arc-shaped than the center line of the cylinder forming a part of the circumference. A pivot point for the telescopic arm is provided at a position close to the door, and the fulcrum of the telescopic arm is driven by a door opening / closing drive motor. Therefore, the length of the telescopic arm changes following the opening and closing of the arc-shaped door. As a result, it is possible to bring the rotation fulcrum much closer to the door side, the fan-shaped area occupied for the rotation of the telescopic arm is greatly reduced, a wide use space on the ceiling wall can be secured, and furthermore, the telescopic arm is used. As a result, the arm length changes following the opening and closing of the door, and the fulcrum position of the telescopic arm can be set to a position eccentric from the vertical plane connecting the center of the entrance opening and the center of the arc surface, and it is possible to set it on the ceiling wall. It is easier to arrange the equipment to be installed There is a use effect.
[0042]
According to a second aspect of the present invention, there is provided an arc-shaped door opening / closing mechanism, wherein one end of a telescopic arm is rotatably connected to an upper end of a two-piece single-opening arc-shaped door which expands and contracts in a circumferential direction. On a vertical plane passing through the middle point of the trajectory in which the connecting portion of each arm moves from the fully opened to fully closed state of each door and the center line of the cylinder forming a part of the circumference of the arc surface of the arc door. The other end side of the telescopic arm is pivotally pivoted to the upper part of the ceiling wall with the position closer to the door than the center line as a fulcrum, and the fulcrum part of each telescopic arm has a respective arc-shaped door. Since the interlocking drive means for rotating the door from fully open to fully closed in the same direction for substantially the same required time is provided, the speed ratio of the arc-shaped door near the open / close end and the arc-shaped door near the door pocket is almost 2: 1. To open and close the stroke from fully open to fully closed in the same time In addition, since the arm length changes following the opening and closing of the arc-shaped door, it is possible to make the pivot point much closer to the door side, and the arm of the door on the door pocket side occupies for the arm rotation. This has the effect of greatly reducing the size of the space and securing a wide use space on the ceiling wall.
[0043]
According to a third aspect of the present invention, there is provided an arcuate door opening / closing mechanism, wherein an interlocking drive means in the two-piece telescopic door is provided by integrating a pulley or a gear with the telescopic arm at a rotation fulcrum of each telescopic arm. The pulleys and gears are set so that the ratio of the diameter of each pulley or each gear is inversely proportional to the ratio of the rotation angle of each telescopic arm from fully open to fully closed. Each of the arc-shaped doors is configured such that the rotation of the drive motor is transmitted to the belt or one of the gears by an appropriate means by winding the idle gear on both gears. From the full opening to the full closing, it is possible to rotate in the same direction in the same stroke required time. In other words, if each member is set in the above relationship, even if the distance between the fulcrum of each telescopic arm and the connecting portion to the arc-shaped door is appropriately changed, the pulley diameter or the gear diameter according to the rotation angle range of the telescopic arm. , It is possible to easily configure a mechanism for rotating each of the arc-shaped doors from the fully opened state to the fully closed state in the same direction in the same stroke required time.
[0044]
According to a fourth aspect of the present invention, there is provided an opening / closing mechanism for an arc-shaped door, wherein one end of a telescopic arm is rotatably connected to an upper end equidistant from an opposite end of the double-opening arc-shaped door having the same width. And the other end of each of the telescopic arms above the ceiling wall with a position symmetrical with respect to a vertical plane passing through the center of the entrance opening and the center line of the cylinder forming a part of the circumference of the arc surface of the arc door. The left and right sides are pivotably pivoted, and one end of the same pair of gears is attached to the telescopic arm fulcrum, respectively, so that, for example, the gears are rotated in opposite directions by engaging each other. With such a configuration, it is possible to open and close the two arc-shaped doors facing each other at the same speed.
[0045]
According to a fifth aspect of the invention, there is provided an elevator opening / closing door opening / closing mechanism for an elevator, wherein a projection is provided on the outer periphery of each arc-shaped door of the basket, and the entrance / exit door of the basket is close to the entrance / exit door of the hoistway. An arcuate entrance / exit door having the same arrangement as the entrance / exit door is provided to face each other, and on each inner peripheral surface, the projection is provided at a position facing the projection of the cage door when the cage is landed. Each of the engaging portions is provided to engage with each other, and the opening and closing is performed by following the door of the basket. The door of the basket can be driven to open and close by the motor of the door opening / closing mechanism, and power consumption can be reduced more efficiently and efficiently than when a dedicated motor is provided in the entrance door. In other words, the entrance door opening / closing mechanism can be opened and closed by following the basket-side entrance door, and can be realized by a low-cost mechanism that is rational and consumes less power.
[Brief description of the drawings]
FIG. 1 is a partial plan view showing an embodiment of an opening / closing mechanism for a single-opening arc-shaped door according to the present invention, in which a partition wall ceiling wall is viewed from above.
FIG. 2 is a partial plan view showing an embodiment of an opening / closing mechanism of a two-piece stretchable opening / closing single-opening arc-shaped door according to the present invention, in which a partition wall ceiling wall is viewed from above.
FIG. 3 is a partial plan view showing another embodiment of an opening / closing mechanism for a two-piece stretchable opening / closing single-opening arcuate door according to the present invention, in which a partition wall ceiling wall is viewed from above.
FIG. 4 is a partial plan view showing an embodiment of an opening / closing mechanism for a two-parted double-opening arcuate door according to the present invention, in which a partition wall ceiling wall is viewed from above.
FIG. 5 is a partial plan view showing an embodiment of an interlocking opening / closing mechanism of the arc-shaped entrance door and the arc-shaped entrance door of the elevator according to the present invention, and the ceiling wall of the basket is viewed from above.
FIG. 6 is a plan view of a swiveling elevator provided with the interlocking opening / closing mechanism of FIG. 5 when the basket upper surface is viewed from above the hoistway.
7 is a front view of the basket of the elevator of FIG. 6 viewed from the left with the entrance and exit of the basket in the left and right directions of the support frame.
8 is a side view of the elevator cage of FIG. 6 as viewed from the back of a support frame.
[Explanation of symbols]
1 partition section
2 Arc side wall
3 doorway
4 Arc door
5 Ceiling wall
6,6a, 6b, 6c Door opening and closing mechanism
7 Telescopic arm
7a sheath
7b Rod part
7c Extension
8 Connecting part (connecting pin)
9 Rotating fulcrum (fulcrum)
10 spindle
11 Driving means
12 pulley
13 belt
14. Drive motor (door opening / closing motor)
15 Limit switch
20 Arc door (first door)
21 Arc door (2nd door)
22 Telescopic arm
22a Connecting part
22b, 22c pivot point
23 Telescopic arm
23a Connecting part
23b, 23c pivot point
24 pulley
25 belt
26, 26a linked drive means
27,27a gear
27b idle gear
27c pulley
28 belt
30, 30a Arc door
31 Interlocking drive means
32, 32a Telescopic arm
33, 33a pivot point
34 gears
34a pulley
35 belt
40 Swivel elevator
41 hoistway
42 Gate
43, 43a Entry / exit door
44,44a Arc-shaped rail
45 Engaging member
46 basket
46a Support frame
47 ceiling
48 Front and rear wall (arc-shaped side wall)
49,49a Doorway
50 arc-shaped rail (upper guide rail)
51 Arc-shaped rail (lower guide rail)
52 hook roller
53 Door opening and closing mechanism
54 protrusion
