JP3796907B2

JP3796907B2 - Flip-up gate

Info

Publication number: JP3796907B2
Application number: JP15048297A
Authority: JP
Inventors: 賢治福入; 浩史山本
Original assignee: Oiles Eco Corp
Current assignee: Oiles Eco Corp
Priority date: 1997-05-22
Filing date: 1997-05-22
Publication date: 2006-07-12
Anticipated expiration: 2017-05-22
Also published as: JPH10317855A

Description

【０００１】
【発明の属する技術分野】
本発明は、車庫等の出入口に用いて好適な跳ね上げ式門扉に関する。
【０００２】
【発明が解決しようとする課題】
この種の門扉としては、特開平７−２７９５６４号公報等に記載のような、支柱と、一端で支柱に回動自在に支持されたアームと、アームの他端に取り付けられた扉と、この扉及びアームの自重に抗して扉の跳ね上げ方向に弾性力をアームに付与するコイルばね及びガススプリングからなる弾性力付与手段とを具備したものが知られている。
【０００３】
上記公報記載の類いの跳ね上げ式門扉は、コイルばねとガススプリングとによって、アーム及び扉のそれぞれの自重に抗するような弾性的な跳ね上げ力をアームに付与して、手動による開扉を容易にしているが、開扉に際して扉にかける手動力が大きい場合には、弾性的な跳ね上げ力に加えてこの大きな手動力がアームに加わるため、アームが勢いよく回動されることとなり、アームがストッパ等に激突して、不快な騒音を発し、扉の寿命を縮めたりする虞がある。また、手動による閉扉の際にも、同じく大きな手動力を扉にかけると、同様な不都合が生じる虞がある。
【０００４】
そこで、本出願人は、先に、支柱と、一端で支柱に垂直面内で回動自在に支持されたアーム手段と、アーム手段の他端に取り付けられた扉と、この扉及びアーム手段の自重に抗して扉の跳ね上げ方向に弾性力をアーム手段に付与する弾性力付与手段と、開閉扉によるアーム手段の回動において当該回動に抗する粘性剪断抵抗力を、アーム手段に付与する粘性剪断抵抗力付与手段とを具備した跳ね上げ式門扉を提案した。
【０００５】
提案に係る跳ね上げ式門扉は、扉にかける手動力が通常より大きい場合においても、アーム手段及び扉に急激な回動を生じさせることなしに、スムーズに扉を開閉することができ、アーム手段の激突による不快音の発生をなくし得、寿命を長くし得る等の初期の目的を十分に達成し得るものである。
【０００６】
しかしながら、かかる跳ね上げ式門扉では、開閉扉のいずれの動作においても粘性剪断抵抗力付与手段を作動させるようにしているため、開扉動作において比較的大きな操作力を必要とし、そして、特に、弾性力付与手段にガススプリングを使用した場合等では、冬期にはこのガススプリングによる扉の跳ね上げ方向の弾性的な回動力が小さくなるため、開扉動作において更に大きな操作力が必要となる虞が生じる。
【０００７】
また、提案の跳ね上げ式門扉では、閉扉動作において完全開扉から直ちに粘性剪断抵抗力付与手段が作動するために、閉扉動作の初期に比較的大きな操作力を必要とする。
【０００８】
本発明は、前記諸点に鑑みてなされたものであって、その目的とするところは、先の提案に係る跳ね上げ式門扉による効果を維持して、更に、小さな操作力でもって開扉を軽く行うことができ、例えば、弾性力付与手段にガススプリングを使用した場合等でも、冬期に開扉のために大きな操作力を必要とするような事態をなくし得る跳ね上げ式門扉を提供することにある。
【０００９】
本発明の他の目的とするところは、上記目的を達成し得て、加えて、閉扉に際しても、小さな操作力でもってそれを開始することができる跳ね上げ式門扉を提供することにある。
【００１０】
【課題を解決するための手段】
本発明の跳ね上げ式門扉は、支柱と、一端で支柱に垂直面内で回動自在に支持されたアーム手段と、アーム手段の他端に取り付けられた扉と、この扉及びアーム手段の自重に抗して扉の跳ね上げ方向の弾性的な回動力をアーム手段に付与する弾性力付与手段と、伝達された一方の方向の回転においては当該回転に抗する粘性剪断抵抗力を発生し、伝達された他方の方向の回転においては当該回転に抗する粘性剪断抵抗力を発生しないように、粘性剪断抵抗力を選択的に発生する手段と、この粘性剪断抵抗力を選択的に発生する手段に、開扉動作において少なくとも微小開扉から途中開扉までは、アーム手段の回動を他方の方向の回転として伝達し、閉扉動作において少なくとも途中閉扉からは、アーム手段の回動を一方の方向の回転として伝達すると共に、粘性剪断抵抗力を選択的に発生する手段において発生された粘性剪断抵抗力を、アーム手段の回動に対する抵抗力としてアーム手段に伝達する伝達手段とを具備している。
【００１１】
本発明において、粘性剪断抵抗力を選択的に発生する手段（以下、選択発生手段という）は、粘性剪断抵抗力を発生する粘性剪断抵抗力発生手段と、伝達された一方の方向の回転においては粘性剪断抵抗力発生手段を作動させる一方、伝達された他方の方向の回転においては粘性剪断抵抗力発生手段を非作動にさせる一方向クラッチとを具備している。ここで、粘性剪断抵抗力発生手段は、ケーシングと、このケーシング内に、ケーシングに対して相対的に回転自在に収容されて、ケーシングと協同してケーシング内に隙間を形成する隙間形成体と、この隙間形成体とケーシングとの間の隙間に充填された粘性体と、隙間形成体が固着されて、ケーシングに対して相対的に回転自在に配された軸とを具備しており、一方向クラッチは、軸及びケーシングのうちのいずれか一方と支柱との間に介在されている。
【００１２】
隙間形成体は、板体を具備しており、この板体には、好ましい一つの例では、同心状に複数の突起が形成されており、この場合、ケーシングには、突起を受容する凹所が同心状に形成されている。なお、隙間形成体としては、上記のものに限定されず、円柱体又は円筒体を具備して構成されてもよい。
【００１３】
本発明では、アーム手段の回動をケーシングに伝達するように、伝達手段を当該ケーシングに連結し、一方向クラッチを軸と支柱との間に介在してもよく、また、これらに代えて、アーム手段の回動を軸に伝達するように、伝達手段を当該軸に連結し、一方向クラッチをケーシングと支柱との間に介在してもよい。
【００１４】
本発明の伝達手段は、選択発生手段に、開扉動作における少なくとも途中開扉後の完全開扉手前から完全開扉まで及び閉扉動作における途中閉扉から完全閉扉までは、アーム手段の回動を一方の方向の回転として伝達するように、構成されており、ここで、伝達手段は、選択発生手段に、開扉動作における完全閉扉から微小開扉まで及び途中開扉から完全開扉手前まで並びに閉扉動作における途中閉扉までは、アーム手段の回動を伝達しないように、構成されていてもよい。
【００１５】
また本発明の伝達手段は、一端が、アーム手段に、他端が、選択発生手段にそれぞれ回動自在に連結された連結棒を具備している。連結棒の他端は、選択発生手段に、回動自在に加えて、更に、直動自在に連結されていてもよく、ここで、選択発生手段に形成された長孔と、この長孔に挿通された連結ピンとにより、連結棒の他端を選択発生手段に回動かつ直動自在に連結しても、これに代えて又はこれと共に、連結棒の他端に形成された長孔と、この長孔に挿通された連結ピンとにより、連結棒の他端を選択発生手段に回動かつ直動自在に連結してもよい。更に、連結棒の他端を、上記のように、長孔及びこの長孔に挿通された連結ピンにより選択発生手段に回動かつ直動自在に連結する代わりに又はこれと共に、連結棒の一端を、長孔及びこの長孔に挿通された連結ピンによりアーム手段に回動かつ直動自在に連結してもよい。
【００１６】
本発明の伝達手段は、選択発生手段において発生された粘性剪断抵抗力に基づくアーム手段の回動に対する抵抗力を、閉扉動作において徐々に増大してアーム手段に伝達するように、構成されている。
【００１７】
なお、本発明の第一の目的を達成するためには、伝達手段として、歯車機構を用いても、スプロケットホイールとスプロケットホイールに掛け渡されたチェーンとを具備した巻き掛け伝達機構を用いてもよく、更には、選択発生手段とアーム手段とを共通軸で連結して、この共通軸を伝達手段としてもよい。
【００１８】
本発明では弾性力付与手段は、同心に配された一対のコイルばねを具備しており、この一対のコイルばねは、互いにその弾性係数が異なっている。
【００１９】
【発明の実施の形態】
次に本発明及び本発明の実施の形態を、図に示す好ましい実施例に基づいて更に詳細に説明する。なお、本発明はこれら実施例に何等限定されないのである。
【００２０】
【実施例】
図１から図５において、本例の跳ね上げ式門扉１は、立設された一対の支柱２及び３と、一端４及び５で支柱２及び３のそれぞれに垂直面内で回動自在、すなわちＲ１及びＲ２方向に回動自在に支持された一対のアーム手段６及び７と、アーム手段６及び７のそれぞれの他端８及び９に取り付けられた扉１０と、扉１０及びアーム手段６及び７の自重に抗して扉１０の跳ね上げ方向に弾性力をアーム手段６及び７のそれぞれに付与する弾性力付与手段１１及び１２と、伝達された一方の方向Ｒ３の回転においては当該回転に抗する粘性剪断抵抗力を発生し、伝達された他方の方向Ｒ４の回転においては当該回転に抗する粘性剪断抵抗力を発生しないようにされた選択発生手段１３及び１４と、選択発生手段１３及び１４に、開扉動作において少なくとも微小開扉から途中開扉までは、アーム手段６及び７の回動を他方の方向Ｒ４の回転として伝達し、閉扉動作において少なくとも途中閉扉からは、アーム手段６及び７の回動を一方の方向Ｒ３の回転として伝達すると共に、選択発生手段１３及び１４において発生された粘性剪断抵抗力を、アーム手段６及び７の回動に対する抵抗力としてアーム手段６及び７に伝達する伝達手段１５及び１６とを具備している。
【００２１】
本例では、支柱２側に、弾性力付与手段１１、選択発生手段１３及び伝達手段１５が、支柱３側に、弾性力付与手段１２、選択発生手段１４及び伝達手段１６がそれぞれ設けられているが、支柱２及び３側のうちいずれか一方にのみに弾性力付与手段、選択発生手段及び伝達手段を設けて構成してもよく、また、支柱２側には、弾性力付与手段と選択発生手段及び伝達手段とのうちいずれか一方を、支柱３側には、弾性力付与手段と選択発生手段及び伝達手段とのうちいずれか他方をそれぞれ設けて構成してもよい。以下、支柱２側について説明し、支柱３側は、同様に構成されているので説明を省略する。
【００２２】
支柱２は本例では中空体からなり、この中空体の中に、弾性力付与手段１１、選択発生手段１３及び伝達手段１５が収容されている。支柱２には、完全開扉を規定するストッパ１７が取り付けられている。
【００２３】
アーム手段６は、断面矩形状のアーム部材２１と、一端２２にアーム部材２１の一端４が嵌着された軸２３とを具備しており、軸２３は、支柱２に回転自在に支持されており、これによりアーム手段６は、一端４で支柱２にＲ１及びＲ２方向に回動自在に支持されている。本例では、アーム手段６は、一本のみのアーム部材２１を具備して構成されているが、これに代えて、特開平７−２７９５６４号公報に記載のような複数本のアーム部材を具備して構成されてもよい。なお、扉１０とアーム部材２１との間には、補強部材２４が取り付けられている。
【００２４】
本例の扉１０は、目隠し用の多数の横格子２５が取り付けられたものであるが、これに限定されず、縦格子を取り付けたもの等その他のものであってもよい。
【００２５】
弾性力付与手段１１は、軸２３に固着されたカム板３１と、カム板３１にピン３２を介してピストンロッド３３の一端３４が回動自在に連結され、シリンダ３５の下端３６が、支柱２に取り付けられたブラケット３７にピン３８を介して回動自在に連結されたガススプリング３９と、カム板３１にピン４０を介して一端４１が連結され、中間４２がカム板３１のカム縁４３に当接して曲げ案内され、他端４４にピン４５を介して回動自在に連結された連結具４６を有したチェーン４７と、それぞれの一端５１及び５２が連結具４６の孔５３に引っ掛けられ、それぞれの他端５４及び５５が、支柱２に取り付けられたブラケット５６に取り付けられた連結具５７の孔５８に引っ掛けられた一対のコイルばね５９及び６０とを具備しており、同心に配された一対のコイルばね５９及び６０は、互いにその弾性係数が異なるものからなっている。カム縁４３は、軸２３の回転中心を中心とした円弧縁６１と、円弧縁６１に連続した直線縁６２とを具備している。なお、カム板３１には、ストッパ１７に当接して、それ以上の回転ができないようにして、完全開扉を規定する当接部６３が形成されている。
【００２６】
連結具５７は、ねじ部６５を有しており、ねじ部６５にばね力調整用のナット６６が螺合されて、ブラケット５６に取り付けられており、ナット６６のねじ部６５への螺合量を変えることにより、コイルばね５９及び６０によって生起される弾性力を調整することができる。また、本例では、弾性力付与手段１１が一対のコイルばね５９及び６０を具備しているため、大部分の跳ね上げ力を一方のコイルばね５９に担当させ、他方のコイルばね６０を微調整用として用いることができる。ガススプリング３９並びにコイルばね５９及び６０は、それぞれの弾性力によって、図２において時計回りの方向（Ｒ１方向）にカム板３１を回転させるようになっている。
【００２７】
選択発生手段１３は、粘性剪断抵抗力を発生する粘性剪断抵抗力発生手段６５と、伝達された一方の方向Ｒ３の回転においては粘性剪断抵抗力発生手段６５を作動させる一方、伝達された他方の方向Ｒ４の回転においては粘性剪断抵抗力発生手段６５を非作動にさせる一方向クラッチ６６とを具備している。
【００２８】
粘性剪断抵抗力発生手段６５は、ケーシング７１と、ケーシング７１内に、ケーシング７１に対して相対的にＲ３及びＲ４方向の両方向に回転自在に収容されて、ケーシング７１と協同してケーシング７１内に隙間７２を形成する隙間形成体７３と、隙間形成体７３とケーシング７１との間の隙間７２に充填されたシリコンオイル等の流体からなる粘性体７４と、隙間形成体７３が固着されて、ケーシング７１に対して相対的にＲ３及びＲ４方向の両方向に回転自在に配された軸８１とを具備している。ケーシング７１は、対称に形成された二つの半割部材７６及び７７からなり、リベット７８等によりこれらが一体化されて形成されている。隙間形成体７３は、対向して両面に段部７９が形成された円盤状の板体８０を具備しており、各段部７９には、粘性体７４の漏出を防止するシールリング８２が設けられている。粘性剪断抵抗力発生手段６５は、隙間形成体７３の板体８０のケーシング７１内でのＲ３又はＲ４方向の回転により、粘性体７４に粘性剪断抵抗力を発生させる。
【００２９】
一方向クラッチ６６は、本例では、一方では、支柱２に支持されており、他方では、軸８１を支持して、軸８１と支柱２との間に介在されており、軸８１のＲ４方向の回転では、支柱２に対して当該軸８１のＲ４方向の回転を許容して、支柱２に対して軸８１をＲ４方向に空転させ、軸８１のＲ３方向の回転では、支柱２に対して当該軸８１のＲ３方向の回転を禁止して、支柱２に対して軸８１がＲ３方向に回転しないように固定する。このようにして、軸８１の一端８２側は、一方向クラッチ６６を介して支柱２に支持されており、軸８１の他端８３側は、軸受８４を介して支柱２にＲ３及びＲ４方向の両方向に関して回転自在に支持されている。
【００３０】
一方向クラッチ６６は、ケーシング７１に回転された一方の方向Ｒ３の回転においては、支柱２に対して軸８１がＲ３方向に回転しないように固定する結果、ケーシング７１と軸８１に固定された板体８０との間にＲ３方向の相対回転を生じさせて、これにより、粘性体７４に粘性剪断抵抗力を発生させるように粘性剪断抵抗力発生手段６５を作動させる一方、ケーシング７１に伝達された他方の方向Ｒ４の回転においては、支柱２に対して軸８１を空転可能し、粘性体７４を介してケーシング７１のＲ４方向の回転と共に軸８１をＲ４方向に回転可能とする結果、ケーシング７１と軸８１に固定された板体８０との間に相対回転を生じさせなくし、これにより、粘性体７４に粘性剪断抵抗力を発生させないように粘性剪断抵抗力発生手段６５を非作動にさせる。
【００３１】
伝達手段１５は、連結棒８６を具備しており、連結棒８６の一端８７は、連結ピン８８を介してカム板３１に回動自在に連結されており、連結棒８６の他端８９は、連結ピン９０を介して選択発生手段１３のケーシング７１に回動自在に連結されている。アーム部材２１が回動されると、アーム部材２１が固着された軸２３が回転され、これにより軸２３に固着されたカム板３１が回転される結果、連結棒８６は、カム板３１の回転をケーシング７１に伝達するようになっている。このように本例では、連結棒８６の一端８７は、連結ピン８８及びカム板３１を介してアーム手段６に回動自在に連結されている。
【００３２】
連結棒８６は、後述するように、アーム部材２１の一定範囲のＲ１方向の回動では、アーム部材２１のこの回動をケーシング７１に、当該ケーシング７１をＲ４方向に回転させるように伝達し、アーム部材２１の他の一定範囲のＲ１方向の回動では、アーム部材２１のこの回動をケーシング７１に、当該ケーシング７１をＲ３方向に回転させるように伝達し、アーム部材２１の一定範囲のＲ２方向の回動では、アーム部材２１のこの回動をケーシング７１に、当該ケーシング７１をＲ３方向に回転させるように伝達し、アーム部材２１の他の一定範囲のＲ２方向の回動では、アーム部材２１のこの回動をケーシング７１に、当該ケーシング７１をＲ４方向に回転させるように伝達する。また、連結棒８６は、選択発生手段１３において発生されてケーシング７１に現出する粘性剪断抵抗力をアーム部材２１の回動に対する抵抗力としてアーム部材２１に伝達する。
【００３３】
また本例では、連結棒８６の他端８９には、連結ピン９０が挿通された長孔１０２が形成されており、連結棒８６の他端８９は、連結棒８６自体に形成された長孔１０２と、長孔１０２に挿通された連結ピン９０とにより、選択発生手段１３のケーシング７１に回動かつＡ及びＢ方向に直動自在に連結されている。
【００３４】
なお、本例では、連結ピン８８と９０とは、連結棒８６が存在しないとした場合、すなわち、ケーシング７１がカム板３１の回転にしたがって回転されないとした場合において、完全閉扉から途中開扉（本例では、開扉角度６７°）までは、カム板３１のＲ１方向の回転で、連結ピン８８が連結ピン９０に接近、すなわち、連結ピン８８と連結ピン９０との間の距離が短くなり、途中開扉から完全開扉までは、カム板３１のＲ１方向の回転で、連結ピン８８が連結ピン９０から離反、すなわち、連結ピン８８と連結ピン９０との間の距離が長くなるような位置関係をもって、設けられている。
【００３５】
以上の跳ね上げ式門扉１では、手動により扉１０が持ち上げられると、アーム部材２１が上方にＲ１方向に回動され、これと共にカム板３１も同様に回転される。この回転において、コイルばね５９及び６０の弾性引っ張り力及びガススプリング３９の空気弾性伸張力により、扉１０等の自重が適宜打ち消されて、手動開扉が困難なく行えるようになっている。一方、閉扉の場合も同様であって、手動による扉１０への少しの下降力の付加により、アーム部材２１が下方にＲ２方向に回動され、これと共にカム板３１も同様に回転され、これと共にコイルばね５９及び６０の引っ張り力及びガススプリング３９の伸張力の作用で、容易に閉扉することができる。
【００３６】
更に、跳ね上げ式門扉１では、開扉において、初期のカム板３１のＲ１方向の回転（本例では、完全閉扉から微小開扉角度８°まで）での連結ピン８８を連結ピン９０に近づける移動と連結棒８６のケーシング７１側に向かうＡ方向の移動とは、長孔１０２の一端１００からその他端１０１への連結ピン９０の相対的な移動を生起させるだけであって、連結棒８６を介してのアーム部材２１のＲ１方向の回動は、ケーシング７１に伝達されず、したがって、粘性剪断抵抗力発生手段６５からの粘性剪断抵抗力なしに開扉を行うことができる。
【００３７】
連結ピン９０の長孔１０２の他端１０１への当接後、更に、アーム部材２１のＲ１方向の回動が続行されると、アーム部材２１のＲ１方向の回動は、連結棒８６を介してケーシング７１に伝達されて、ケーシング７１がＲ４方向に回転される。ケーシング７１のＲ４方向の回転は、粘性体７４を介して軸８１に伝達される。ここで、軸８１は、一方向クラッチ６６を介して支柱２に対して空転可能に支持されているため、粘性体７４を介して軸８１に伝達されたケーシング７１のＲ４方向の回転は、軸８１を同じくＲ４方向に回転させる結果、軸８１に固定された板体８０とケーシング７１との間に相対回転が生じなく、したがって、粘性剪断抵抗力発生手段６５からの粘性剪断抵抗力なしに更なる開扉を行うことができる。
【００３８】
更に、アーム部材２１のＲ１方向の回動が続行されて、完全開扉手前（本例では、開扉角度６７°）を過ぎると、カム板３１のＲ１方向の回転は、前記とは逆に、連結ピン８８を連結ピン９０から遠ざけるようになる。この結果、連結棒８６は、ケーシング７１から離れるようにＢ方向に移動されて、連結ピン９０に長孔１０２の他端１０１からその一端１００への相対的な移動を生起させる。連結ピン９０の長孔１０２の他端１０１から一端１００への相対的な移動では、アーム部材２１のＲ１方向の回動は、連結棒８６を介してケーシング７１に伝達されず、したがって、この回動中もまた、粘性剪断抵抗力発生手段６５からの粘性剪断抵抗力なしに開扉を行うことができる。
【００３９】
開扉において、連結ピン９０の長孔１０２の一端１００への当接（本例では、開扉角度９１．９°）後は、カム板３１のＲ１方向の回転は、連結棒８６を介してケーシング７１に伝達されて、前記とは逆に、ケーシング７１をＲ３方向に回転させる。ケーシング７１のＲ３方向の回転は、粘性体７４を介して軸８１に伝達される。ここで、Ｒ３方向の回転に対しては、軸８１が一方向クラッチ６６により回転しないようにされているため、軸８１に固定された板体８０とケーシング７１との間に相対回転が生じ、これにより、粘性体７４が粘性剪断されて、この粘性剪断に相当して粘性剪断抵抗力がケーシング７１に現出して、この粘性剪断抵抗力は、連結棒８６を介してアーム部材２１のＲ２方向の回動に制動を加える。
【００４０】
図６に示すように、完全開扉（本例では、開扉角度９３°）になると、カム板３１の当接部６３がストッパ１７に当接して、アーム部材２１のＲ１方向の回動を禁止する。
【００４１】
このように本例では、伝達手段１５は、選択発生手段１３に、開扉動作における完全閉扉（開扉角度０°）から微小開扉（開扉角度８°）まで及び途中開扉（開扉角度６７°）から完全開扉手前（開扉角度９１．９°）までは、アーム手段６の回動を伝達しないようにし、開扉動作における途中開扉（開扉角度６７°）後の完全開扉手前（開扉角度９１．９°）から完全開扉（開扉角度９３°）までは、アーム手段６の回動Ｒ１を一方の方向Ｒ３の回転として伝達するように、構成されている。したがって、跳ね上げ式門扉１では、開扉動作において、粘性剪断抵抗力発生手段６５からの粘性剪断抵抗力によって開扉動作が困難になるというような不都合がなく、例えば、冬期にガススプリング３９による扉の跳ね上げ方向の弾性的な回動力が小さくなっても、比較的小さな操作力でもって開扉を行い得、しかも、当接部６３のストッパ１７への当接手前で、アーム部材２１の回動に制動が与えられるため、当接部６３のストッパ１７への激突を避けることができる。
【００４２】
一方、閉扉において跳ね上げ式門扉１では、図６に示す完全開扉から手動により扉１０が持ち下げられると、アーム部材２１が下方にＲ２方向に回動され、これと共にカム板３１も同様に回転される。この回転において、完全開扉からカム板３１のＲ２方向の回転（本例では、開扉角度４０．５°まで）での連結ピン８８を連結ピン９０に近づけ、その後、連結ピン８８を連結ピン９０から遠ざける移動と、ケーシング７１側に向かいその後ケーシング７１側から離れるＡ及びＢ方向の連結棒８６の移動とは、連結ピン９０を長孔１０２の一端１００からその他端１０１へのまたその逆の相対的な移動を生起させるだけであって、連結棒８６を介してのアーム部材２１のＲ２方向の回動は、ケーシング７１に伝達されず、したがって、粘性剪断抵抗力発生手段６５からの粘性剪断抵抗力なしに閉扉を行うことができる。
【００４３】
連結ピン９０の長孔の他端１００への当接（本例では、開扉角度４０．５°）後、更に、アーム部材２１のＲ２方向の回動が続行されると、アーム部材２１のＲ２方向の回動は、連結棒８６を介してケーシング７１に伝達されて、ケーシング７１がＲ３方向に回転される。ケーシング７１のＲ３方向の回転は、粘性体７４を介して軸８１に伝達される。ここで、軸８１は、一方向クラッチ６６を介して支柱２に対してＲ３方向に回転されないように支持されているため、軸８１に固定された板体８０とケーシング７１との間に相対回転が生じ、したがって、粘性体７４が粘性剪断されて、この粘性剪断に相当して粘性剪断抵抗力がケーシング７１に現出して、この粘性剪断抵抗力は、連結棒８６を介してアーム部材２１のＲ２方向の回動に制動を加える。この制動は、図２に示す完全閉扉になるまでアーム部材２１のＲ２方向の回動に対して加えられる。
【００４４】
このように本例では、伝達手段１５は、選択発生手段１３に、閉扉動作における完全開扉（開扉角度９３°）から途中閉扉（開扉角度４０．５°）までは、アーム手段６の回動を伝達せず、途中閉扉（開扉角度４０．５°）から完全閉扉（開扉角度０°）までは、アーム手段６の回転を一方の方向Ｒ３の回転として伝達するように、構成されている。したがって、閉扉に際しても、小さな操作力でもってそれを開始することができ、しかも、閉扉途中からゆっくりと閉扉し得て、完全閉扉において地面等への激突を避けることができる。
【００４５】
なお本例では、連結ピン８８の中心と連結ピン９０の中心とを結ぶ線１１１と、連結ピン９０の中心と軸８１の中心とを結ぶ線１１２との交差角Θを、途中閉扉（開扉角度４０．５°）から完全閉扉に至るにしたがって増大させて、完全閉扉においてほぼ９０°となり、ここで回転トルクが最大となるようにして、而して、選択発生手段１３において発生された粘性剪断抵抗力がアーム手段６の回動に対する抵抗力であって閉扉動作において徐々に増大する抵抗力として伝達手段１５を介してアーム手段６に伝達されるように、伝達手段１５を構成している。したがって、これによっても、閉扉途中からゆっくりと閉扉し得て、完全閉扉において地面等への激突を避けることができる。
【００４６】
また、跳ね上げ式門扉１では、粘性剪断抵抗力発生手段６５を用いているため、コイルばね５９及び６０の弾性引っ張り力及びガススプリング３９の空気弾性伸張力の微妙なバランスが崩れても、これにそれほど影響されることなく、スムーズな開扉及び閉扉を得ることができる。また、扉１０に加える持ち上げ力又は引き下げ力が比較的大きく、アーム部材２１が急激に回動されようとした場合、板体８０のケーシング７１内での相対回転がより速くなろうとする結果、粘性体７４により生じる粘性剪断抵抗力が大きくなり、この大きな粘性剪断抵抗力をアーム部材２１に付与するため、実質的にアーム部材２１には、回動速度に比例した制動力が働き、扉１０が急激に回動して、地面又はストッパに激突して、不快な騒音を発するような事態を避けることができる。
【００４７】
なお、前記に代えて又は前記と共に、選択発生手段１３のケーシング７１に長孔を形成し、この長孔とこの長孔に挿通された連結ピン９０とにより、連結棒８６の他端８９を選択発生手段１３に回動かつ直動自在に連結してもよい。また、軸８１にアーム部材２１の回転を伝達するように、連結棒８６を軸８１に連結し、一方向クラッチ６６をケーシング７１と支柱２との間に介在してもよい。
【００４８】
上記の例では、凹凸のない板体８０で隙間形成体７３を構成したが、これに代えて、図７に示すように、板体８０の両面に同心状に複数の突起９１を形成してもよく、この場合、ケーシング７１には、当該突起を受容する凹所９２を同心状に形成するとよく、このような突起９１を有する隙間形成体７３と、凹所９２を有するケーシング７１との間の隙間７２に、粘性体７４を充填して、前記と同様に作動させてもよい。
【００４９】
また、長孔１０２を形成することなしに、連結棒８６の他端８９をケーシング７１に連結ピン９０によって回動自在にのみ連結してもよく、更に、長孔１０２による作用を必要としない場合には、伝達手段１５としては、連結棒８６に代えて、無端チェーン及びこの無端チェーンが掛け回されたスプロケットホイールとを具備した巻き掛け伝動機構又は複数の互いに噛み合った歯車を具備した歯車機構から構成してもよく、更には、アーム手段６の回動を隙間形成体７３に直接伝達する共通軸から構成してもよい。
【００５０】
【発明の効果】
以上のように本発明によれば、扉にかける手動力が通常より大きい場合においても、アーム手段及び扉に急激な回動を生じさせることなしに、スムーズに扉を開閉することができ、アーム手段の激突による不快音の発生をなくし得、寿命を長くすることができる上に、更に、小さな操作力でもって開扉を軽く行うことができ、例えば、弾性力付与手段にガススプリングを使用した場合等でも、冬期に開扉のために大きな操作力を必要とするような事態をなくし得、加えて、閉扉に際しても、小さな操作力でもってそれを開始することができる。
【図面の簡単な説明】
【図１】本発明の好ましい一実施例の斜視図である。
【図２】図１に示す実施例の完全閉扉の支柱上部の側面説明図である。
【図３】図１に示す実施例の支柱下部の側面説明図である。
【図４】図１に示す実施例の支柱上部の正面説明図である。
【図５】図１に示す実施例の粘性剪断抵抗力付与手段の平面断面説明図である。
【図６】図１に示す実施例の完全開扉の支柱上部の側面説明図である。
【図７】図１に示す実施例に適用し得る他の粘性剪断抵抗力付与手段の平面断面説明図である。
【符号の説明】
１跳ね上げ式門扉
２支柱
６アーム手段
１０扉
１１弾性力付与手段
１３選択発生手段
１５伝達手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flip-up gate suitable for use in an entrance of a garage or the like.
[0002]
[Problems to be solved by the invention]
As this type of gate, as described in Japanese Patent Application Laid-Open No. 7-279564, etc., a support, an arm rotatably supported by the support at one end, a door attached to the other end of the arm, 2. Description of the Related Art There is known a device provided with an elastic force applying means including a coil spring and a gas spring that applies an elastic force to an arm in the direction in which the door is flipped up against its own weight.
[0003]
The kind of flip-up type gate described in the above publication is provided with a coil spring and a gas spring to apply an elastic spring-up force against the respective weights of the arm and the door to the arm. However, when the manual force applied to the door is large when the door is opened, this large manual force is applied to the arm in addition to the elastic flip-up force, so the arm is pivoted vigorously. There is a risk that the arm may collide with a stopper or the like, generating unpleasant noise and shortening the service life of the door. In addition, when manually closing the door, if a large manual force is applied to the door, the same inconvenience may occur.
[0004]
Therefore, the applicant of the present invention firstly, a support, arm means supported at one end so as to be rotatable in a vertical plane, a door attached to the other end of the arm means, and the door and arm means. An elastic force applying means for applying an elastic force to the arm means in the direction of raising the door against its own weight, and a viscous shear resistance force against the rotation in the rotation of the arm means by the opening / closing door is applied to the arm means. A flip-up type gate with a viscous shear resistance applying means was proposed.
[0005]
The flip-up type gate according to the proposal can open and close the door smoothly without causing abrupt rotation of the arm means and the door even when the manual force applied to the door is larger than usual. The generation of an unpleasant noise due to the clash of the first can be eliminated, and the initial purpose such as a longer life can be sufficiently achieved.
[0006]
However, in such a flip-up type gate, since the viscous shear resistance applying means is operated in any operation of the open / close door, a relatively large operating force is required in the opening operation, and in particular, the elastic When a gas spring is used as the force applying means, the elastic turning force of the gas spring in the spring-up direction by the gas spring is reduced in winter, so that a larger operating force may be required for the opening operation. Arise.
[0007]
Further, in the proposed flip-up type gate, since the viscous shear resistance applying means operates immediately after the door is fully opened in the closing operation, a relatively large operating force is required at the initial stage of the closing operation.
[0008]
The present invention has been made in view of the above-mentioned points. The object of the present invention is to maintain the effect of the flip-up type gate according to the previous proposal, and further, lightly open the door with a small operation force. For example, even when a gas spring is used as an elastic force applying means, a flip-up gate that can eliminate a situation where a large operating force is required for opening the door in winter is provided. is there.
[0009]
Another object of the present invention is to provide a flip-up type gate which can achieve the above-mentioned object and which can be started with a small operating force even when the door is closed.
[0010]
[Means for Solving the Problems]
The flip-up type gate of the present invention includes a support, arm means supported at one end so as to be rotatable in a vertical plane, a door attached to the other end of the arm means, and the weight of the door and arm means. An elastic force imparting means for imparting an elastic turning force in the direction in which the door is flipped up against the arm means, and a viscous shear resistance force that resists the rotation in the transmitted rotation in one direction, Means for selectively generating viscous shear resistance force and means for selectively generating this viscous shear resistance force so as not to generate the viscous shear resistance force against the rotation in the transmitted rotation in the other direction In addition, the rotation of the arm means is transmitted as rotation in the other direction at least from the minute opening to the middle opening in the door opening operation, and the rotation of the arm means is transmitted in one direction from at least the middle closing in the door closing operation. As the rotation of While, the viscous shearing resistance generated in the means for selectively generating a viscous shear resistance, and a transmission means for transmitting the arm means as resistance to rotation of the arm means.
[0011]
In the present invention, the means for selectively generating the viscous shear resistance force (hereinafter referred to as the selection generation means) includes the viscous shear resistance generation means for generating the viscous shear resistance force and the transmitted rotation in one direction. A one-way clutch that operates the viscous shear resistance generating means while deactivating the viscous shear resistance generating means in the transmitted rotation in the other direction. Here, the viscous shear resistance generating means is a casing and a gap forming body that is accommodated in the casing so as to be rotatable relative to the casing, and forms a gap in the casing in cooperation with the casing, A viscous body filled in a gap between the gap forming body and the casing, and a shaft to which the gap forming body is fixed and rotatably arranged relative to the casing. The clutch is interposed between one of the shaft and the casing and the support column.
[0012]
The gap forming body includes a plate body. In a preferable example, the gap body has a plurality of concentric projections. In this case, the casing is a recess for receiving the projections. Are formed concentrically. In addition, as a clearance gap formation body, it is not limited to said thing, You may comprise and comprise a cylindrical body or a cylindrical body.
[0013]
In the present invention, the transmission means may be connected to the casing so that the rotation of the arm means is transmitted to the casing, and a one-way clutch may be interposed between the shaft and the support column. The transmission means may be connected to the shaft so that the rotation of the arm means is transmitted to the shaft, and a one-way clutch may be interposed between the casing and the support column.
[0014]
The transmission means according to the present invention allows the selection generating means to rotate the arm means from at least halfway before the opening of the door during the opening operation to the complete opening and from the halfway closing to the complete closing during the closing operation. The transmission means is configured to transmit to the selection generation means from the fully closed door to the minute door in the opening operation and from the halfway open door to the fully opened door and the closed door. You may be comprised so that rotation of an arm means may not be transmitted to the halfway door in operation | movement.
[0015]
The transmission means of the present invention includes a connecting rod having one end rotatably connected to the arm means and the other end rotatably connected to the selection generating means. The other end of the connecting rod may be connected to the selection generating means in addition to being rotatable, and may be further connected to the selection generating means. Even if the other end of the connecting rod is rotatably and linearly connected to the selection generating means by the inserted connecting pin, instead of or along with this, a long hole formed in the other end of the connecting rod, The other end of the connecting rod may be connected to the selection generating means so as to be rotatable and linearly movable by a connecting pin inserted through the long hole. Furthermore, instead of or together with the other end of the connecting rod connected to the selection generating means by the elongated hole and the connecting pin inserted through the elongated hole, as described above, one end of the connecting rod is provided. May be connected to the arm means by a long hole and a connecting pin inserted through the long hole so as to be rotatable and linearly movable.
[0016]
The transmission means of the present invention is configured to gradually increase the resistance force against the rotation of the arm means based on the viscous shear resistance generated in the selection generation means and transmit the resistance force to the arm means in the closing operation. .
[0017]
In order to achieve the first object of the present invention, a gear mechanism may be used as the transmission means, or a wrapping transmission mechanism including a sprocket wheel and a chain spanned over the sprocket wheel may be used. Furthermore, the selection generating means and the arm means may be connected by a common shaft, and this common shaft may be used as the transmission means.
[0018]
In the present invention, the elastic force applying means includes a pair of concentric coil springs, and the pair of coil springs have different elastic coefficients.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention and the embodiments of the present invention will be described in more detail based on preferred embodiments shown in the drawings. The present invention is not limited to these examples.
[0020]
【Example】
1 to 5, the flip-up type gate 1 of the present example is rotatable in a vertical plane with a pair of upright columns 2 and 3 and one end 4 and 5 at each of the columns 2 and 3. A pair of arm means 6 and 7 supported rotatably in the directions R1 and R2, a door 10 attached to the other end 8 and 9 of each of the arm means 6 and 7, and a door 10 and arm means 6 and 7 The elastic force applying means 11 and 12 for applying an elastic force to each of the arm means 6 and 7 in the spring-up direction of the door 10 against the dead weight of the door 10 and the transmitted rotation in one direction R3 resist the rotation. Selection generating means 13 and 14 and selection generating means 13 and 14 that are configured not to generate a viscous shear resistance force against the rotation in the transmitted rotation in the other direction R4. In the opening operation At least from the minute door to the halfway door, the rotation of the arm means 6 and 7 is transmitted as the rotation in the other direction R4. Transmitting means 15 for transmitting the viscous shear resistance generated in the selection generating means 13 and 14 to the arm means 6 and 7 as resistance to the rotation of the arm means 6 and 7 16.
[0021]
In this example, elastic force applying means 11, selection generating means 13 and transmission means 15 are provided on the support column 2 side, and elastic force applying means 12, selection generating means 14 and transmission device 16 are provided on the support column 3 side. However, the elastic force applying means, the selection generating means, and the transmitting means may be provided only on one of the support pillars 2 and 3 side, and the elastic force applying means and the selective generation may be provided on the support pillar 2 side. Any one of the means and the transmission means may be provided, and any one of the elastic force applying means, the selection generating means, and the transmission means may be provided on the support column 3 side. Hereinafter, the column 2 side will be described, and the column 3 side is configured in the same manner, and the description thereof is omitted.
[0022]
In this example, the support column 2 is formed of a hollow body, and the elastic force applying means 11, the selection generating means 13, and the transmission means 15 are accommodated in the hollow body. A stopper 17 that defines a complete opening is attached to the column 2.
[0023]
The arm means 6 includes an arm member 21 having a rectangular cross section and a shaft 23 in which one end 4 of the arm member 21 is fitted to one end 22, and the shaft 23 is rotatably supported by the column 2. Thus, the arm means 6 is supported at one end 4 on the support column 2 so as to be rotatable in the R1 and R2 directions. In this example, the arm means 6 includes only one arm member 21, but instead includes a plurality of arm members as described in JP-A-7-279564. May be configured. A reinforcing member 24 is attached between the door 10 and the arm member 21.
[0024]
The door 10 of this example is provided with a large number of horizontal grids 25 for blindfolding, but is not limited thereto, and may be other types such as those provided with vertical grids.
[0025]
The elastic force applying means 11 includes a cam plate 31 fixed to a shaft 23, one end 34 of a piston rod 33 is rotatably connected to the cam plate 31 via a pin 32, and a lower end 36 of a cylinder 35 is connected to a column 2. A gas spring 39 is rotatably connected to the bracket 37 attached to the cam plate 31 via a pin 38, one end 41 is connected to the cam plate 31 via a pin 40, and an intermediate 42 is connected to the cam edge 43 of the cam plate 31. A chain 47 having a connector 46 that is bent and guided to contact and is rotatably connected to the other end 44 via a pin 45, and one ends 51 and 52 of the chain 47 are hooked in holes 53 of the connector 46, Each of the other ends 54 and 55 includes a pair of coil springs 59 and 60 hooked in a hole 58 of a connector 57 attached to a bracket 56 attached to the column 2, and is concentric. A pair of coil springs 59 and 60 arranged consists of the modulus of elasticity different from each other. The cam edge 43 includes an arc edge 61 centered on the rotation center of the shaft 23 and a linear edge 62 continuous with the arc edge 61. The cam plate 31 is formed with an abutting portion 63 that abuts against the stopper 17 and prevents further rotation so as to define a complete door opening.
[0026]
The connector 57 has a screw portion 65, and a nut 66 for adjusting the spring force is screwed to the screw portion 65 and is attached to the bracket 56, and the screwing amount of the nut 66 to the screw portion 65 is fixed. By changing the above, the elastic force generated by the coil springs 59 and 60 can be adjusted. In this example, since the elastic force applying means 11 includes a pair of coil springs 59 and 60, one coil spring 59 is responsible for most of the spring-up force, and the other coil spring 60 is finely adjusted. It can be used for use. The gas spring 39 and the coil springs 59 and 60 rotate the cam plate 31 in the clockwise direction (R1 direction) in FIG. 2 by their respective elastic forces.
[0027]
The selection generating means 13 operates the viscous shear resistance generating means 65 for generating the viscous shear resistance, and operates the viscous shear resistance generating means 65 in the transmitted rotation in one direction R3, while the other transmitted. A one-way clutch 66 that deactivates the viscous shear resistance generating means 65 in rotation in the direction R4 is provided.
[0028]
The viscous shear resistance generating means 65 is accommodated in the casing 71 and the casing 71 so as to be rotatable relative to the casing 71 in both directions R3 and R4, and in cooperation with the casing 71. A gap forming body 73 that forms the gap 72, a viscous body 74 made of a fluid such as silicon oil filled in the gap 72 between the gap forming body 73 and the casing 71, and the gap forming body 73 are fixed, and the casing And a shaft 81 that is rotatably arranged in both the R3 and R4 directions. The casing 71 includes two halved members 76 and 77 formed symmetrically, and these are integrally formed by a rivet 78 or the like. The gap forming body 73 includes a disk-like plate body 80 having stepped portions 79 formed on both sides thereof, and each stepped portion 79 is provided with a seal ring 82 for preventing the viscous body 74 from leaking out. It has been. The viscous shear resistance generating means 65 generates a viscous shear resistance on the viscous body 74 by rotating the plate member 80 of the gap forming body 73 in the R3 or R4 direction within the casing 71.
[0029]
In this example, the one-way clutch 66 is supported on the support column 2 on the one hand, and on the other hand, supports the shaft 81 and is interposed between the shaft 81 and the support column 2. , The shaft 81 is allowed to rotate in the R4 direction with respect to the support column 2, the shaft 81 is idled in the R4 direction with respect to the support column 2, and the rotation of the shaft 81 in the R3 direction is performed with respect to the support column 2. The rotation of the shaft 81 in the R3 direction is prohibited, and the shaft 81 is fixed to the support column 2 so as not to rotate in the R3 direction. In this way, the one end 82 side of the shaft 81 is supported by the support column 2 via the one-way clutch 66, and the other end 83 side of the shaft 81 is connected to the support column 2 via the bearing 84 in the R3 and R4 directions. It is supported rotatably in both directions.
[0030]
The one-way clutch 66 is a plate fixed to the casing 71 and the shaft 81 as a result of fixing the shaft 81 to the support column 2 so as not to rotate in the R3 direction in the rotation in one direction R3 rotated by the casing 71. Relative rotation in the R3 direction is caused between the body 80 and the viscous shearing force generating means 65 to actuate the viscous body 74 to generate the viscous shearing resistance force. In the rotation in the other direction R4, the shaft 81 can be idled with respect to the support column 2, and the shaft 81 can be rotated in the R4 direction together with the rotation of the casing 71 in the R4 direction via the viscous body 74. The viscous shear resistance generating means 6 prevents the relative rotation from occurring between the plate body 80 and the plate 81 fixed to the shaft 81, thereby preventing the viscous body 74 from generating a viscous shear resistance force. To the to the non-operation.
[0031]
The transmission means 15 includes a connecting rod 86. One end 87 of the connecting rod 86 is rotatably connected to the cam plate 31 via a connecting pin 88, and the other end 89 of the connecting rod 86 is It is rotatably connected to the casing 71 of the selection generating means 13 via a connecting pin 90. When the arm member 21 is rotated, the shaft 23 to which the arm member 21 is fixed is rotated. As a result, the cam plate 31 fixed to the shaft 23 is rotated. As a result, the connecting rod 86 rotates the cam plate 31. Is transmitted to the casing 71. Thus, in this example, one end 87 of the connecting rod 86 is rotatably connected to the arm means 6 via the connecting pin 88 and the cam plate 31.
[0032]
As will be described later, the connecting rod 86 transmits the rotation of the arm member 21 to the casing 71 to rotate the casing 71 in the R4 direction when the arm member 21 rotates in the R1 direction within a certain range. In another rotation of the arm member 21 in the R1 direction, the rotation of the arm member 21 is transmitted to the casing 71 so as to rotate the casing 71 in the R3 direction. In the rotation of the direction, this rotation of the arm member 21 is transmitted to the casing 71 so as to rotate the casing 71 in the R3 direction. This rotation of 21 is transmitted to the casing 71 so as to rotate the casing 71 in the R4 direction. The connecting rod 86 transmits the viscous shear resistance generated by the selection generating means 13 and appearing in the casing 71 to the arm member 21 as a resistance force against the rotation of the arm member 21.
[0033]
In this example, a long hole 102 through which the connecting pin 90 is inserted is formed at the other end 89 of the connecting rod 86, and the other end 89 of the connecting rod 86 is a long hole formed in the connecting rod 86 itself. 102 and a connecting pin 90 inserted through the long hole 102 are connected to the casing 71 of the selection generating means 13 so as to be rotatable and linearly movable in the A and B directions.
[0034]
In this example, the connecting pins 88 and 90 are not opened from the fully closed door when the connecting rod 86 is not present, that is, when the casing 71 is not rotated in accordance with the rotation of the cam plate 31. In this example, until the door opening angle 67 °), the rotation of the cam plate 31 in the R1 direction causes the connecting pin 88 to approach the connecting pin 90, that is, the distance between the connecting pin 88 and the connecting pin 90 is shortened. From the middle door to the fully open door, the rotation of the cam plate 31 in the R1 direction causes the connecting pin 88 to move away from the connecting pin 90, that is, the distance between the connecting pin 88 and the connecting pin 90 becomes longer. It is provided with a positional relationship.
[0035]
In the flip-up gate 1 described above, when the door 10 is manually lifted, the arm member 21 is rotated upward in the R1 direction, and the cam plate 31 is similarly rotated. In this rotation, due to the elastic pulling force of the coil springs 59 and 60 and the air elastic extension force of the gas spring 39, the dead weight of the door 10 and the like is appropriately canceled, and the manual opening can be performed without difficulty. On the other hand, the same applies to the case of closing the door. When a slight downward force is manually applied to the door 10, the arm member 21 is rotated downward in the R2 direction, and the cam plate 31 is also rotated in the same manner. In addition, the door can be easily closed by the action of the pulling force of the coil springs 59 and 60 and the extension force of the gas spring 39.
[0036]
Further, in the flip-up type gate 1, when the door is opened, the connecting pin 88 is moved closer to the connecting pin 90 when the initial cam plate 31 is rotated in the R1 direction (in this example, from a completely closed door to a minute opening angle of 8 °). The movement and the movement of the connecting rod 86 in the A direction toward the casing 71 only cause a relative movement of the connecting pin 90 from one end 100 to the other end 101 of the long hole 102. Thus, the rotation of the arm member 21 in the R1 direction is not transmitted to the casing 71, and therefore the door can be opened without the viscous shear resistance force from the viscous shear resistance force generation means 65.
[0037]
When the rotation of the arm member 21 in the R1 direction is continued after the contact of the connecting pin 90 with the other end 101 of the long hole 102, the rotation of the arm member 21 in the R1 direction is performed via the connecting rod 86. Is transmitted to the casing 71, and the casing 71 is rotated in the R4 direction. The rotation of the casing 71 in the R4 direction is transmitted to the shaft 81 via the viscous body 74. Here, since the shaft 81 is supported so as to be idle with respect to the support column 2 via the one-way clutch 66, the rotation in the R4 direction of the casing 71 transmitted to the shaft 81 via the viscous body 74 is As a result of rotating 81 in the R4 direction as well, relative rotation does not occur between the plate body 80 fixed to the shaft 81 and the casing 71, and therefore, there is no viscous shear resistance force from the viscous shear resistance generation means 65. Can be opened.
[0038]
Further, when the rotation of the arm member 21 in the R1 direction is continued and the front of the door is completely opened (in this example, the opening angle is 67 °), the rotation of the cam plate 31 in the R1 direction is opposite to the above. The connection pin 88 is moved away from the connection pin 90. As a result, the connecting rod 86 is moved in the B direction away from the casing 71, causing the connecting pin 90 to move relative to the one end 100 from the other end 101 of the long hole 102. In the relative movement of the long hole 102 of the connecting pin 90 from the other end 101 to the one end 100, the rotation of the arm member 21 in the R1 direction is not transmitted to the casing 71 via the connecting rod 86. During the movement, the door can be opened without the viscous shear resistance force from the viscous shear resistance generation means 65.
[0039]
When the door is opened, the cam plate 31 rotates in the R1 direction via the connecting rod 86 after the contact of the connecting pin 90 with the one end 100 of the elongated hole 102 (in this example, the door opening angle 91.9 °). Contrary to the above, the casing 71 is rotated in the R3 direction by being transmitted to the casing 71. The rotation of the casing 71 in the R3 direction is transmitted to the shaft 81 via the viscous body 74. Here, since the shaft 81 is prevented from rotating by the one-way clutch 66 with respect to the rotation in the R3 direction, a relative rotation occurs between the plate body 80 fixed to the shaft 81 and the casing 71, As a result, the viscous body 74 is subjected to viscous shear, and a viscous shear resistance corresponding to the viscous shear appears in the casing 71, and this viscous shear resistance is applied to the arm member 21 in the R2 direction via the connecting rod 86. Braking is applied to the rotation.
[0040]
As shown in FIG. 6, when the door is completely opened (in this example, the door opening angle is 93 °), the abutting portion 63 of the cam plate 31 abuts against the stopper 17 and the arm member 21 rotates in the R1 direction. Ban.
[0041]
In this way, in this example, the transmission means 15 causes the selection generation means 13 to open from the fully closed door (opening angle 0 °) to the minute opening (opening angle 8 °) and halfway open (opening door). From the angle 67 °) to just before the door is fully opened (door opening angle 91.9 °), the rotation of the arm means 6 is not transmitted, and after the door is opened halfway (door opening angle 67 °) during the opening operation. From before opening the door (opening angle 91.9 °) to fully opening (opening angle 93 °), the rotation R1 of the arm means 6 is transmitted as rotation in one direction R3. . Therefore, in the flip-up type gate 1, there is no inconvenience that the opening operation becomes difficult due to the viscous shear resistance force from the viscous shear resistance generating means 65 in the opening operation. Even if the elastic rotational force in the direction in which the door is flipped up is small, the door can be opened with a relatively small operating force, and the arm member 21 can be opened before the contact of the contact portion 63 with the stopper 17. Since braking is applied to the rotation, a collision of the contact portion 63 with the stopper 17 can be avoided.
[0042]
On the other hand, in the flip-up type gate 1 in the closed state, when the door 10 is manually lowered from the fully opened door shown in FIG. 6, the arm member 21 is rotated downward in the R2 direction, and the cam plate 31 is similarly moved. It is rotated. In this rotation, the connecting pin 88 in the rotation of the cam plate 31 in the R2 direction (in this example, up to the door opening angle of 40.5 °) is brought close to the connecting pin 90, and then the connecting pin 88 is connected to the connecting pin. The movement away from 90 and the movement of the connecting rod 86 in the A and B directions toward the casing 71 and then away from the casing 71 are the reverse of the connecting pin 90 from one end 100 of the long hole 102 to the other end 101. The rotation of the arm member 21 through the connecting rod 86 in the R2 direction is not transmitted to the casing 71, and thus the viscous shear from the viscous shear resistance generation means 65 is caused. The door can be closed without resistance.
[0043]
After the contact of the elongated hole of the connecting pin 90 with the other end 100 (in this example, the door opening angle is 40.5 °), when the rotation of the arm member 21 in the R2 direction is further continued, The rotation in the R2 direction is transmitted to the casing 71 via the connecting rod 86, and the casing 71 is rotated in the R3 direction. The rotation of the casing 71 in the R3 direction is transmitted to the shaft 81 via the viscous body 74. Here, since the shaft 81 is supported so as not to rotate in the R3 direction with respect to the support column 2 via the one-way clutch 66, relative rotation between the plate body 80 fixed to the shaft 81 and the casing 71 is achieved. Therefore, the viscous body 74 is viscous sheared, and a viscous shear resistance force corresponding to the viscous shear appears on the casing 71, and this viscous shear resistance force is applied to the arm member 21 via the connecting rod 86. Braking is applied to the rotation in the R2 direction. This braking is applied to the rotation of the arm member 21 in the R2 direction until the door is completely closed as shown in FIG.
[0044]
Thus, in this example, the transmission means 15 causes the selection generating means 13 to move the arm means 6 from the complete opening (door opening angle 93 °) to the middle closing (door opening angle 40.5 °) in the closing operation. It is configured so that the rotation of the arm means 6 is transmitted as the rotation in one direction R3 from the halfway closing (opening angle 40.5 °) to the complete closing (opening angle 0 °) without transmitting the rotation. Has been. Therefore, even when the door is closed, it can be started with a small operating force, and it can be slowly closed from the middle of the door closing, so that a collision with the ground or the like can be avoided when the door is completely closed.
[0045]
In this example, the crossing angle Θ between the line 111 connecting the center of the connecting pin 88 and the center of the connecting pin 90 and the line 112 connecting the center of the connecting pin 90 and the center of the shaft 81 is determined as a halfway closing (opening of the door). Viscosity generated in the selection generating means 13 is increased so as to increase from the angle 40.5 °) to the complete closing, and is approximately 90 ° at the complete closing, where the rotational torque is maximized. The transmission means 15 is configured such that the shear resistance force is a resistance force against the rotation of the arm means 6 and is transmitted to the arm means 6 via the transmission means 15 as a resistance force that gradually increases in the closing operation. . Therefore, even by this, the door can be closed slowly in the middle of closing, and a collision with the ground or the like can be avoided when the door is completely closed.
[0046]
Further, since the flip-up type gate 1 uses the viscous shear resistance generating means 65, even if the delicate balance between the elastic tensile force of the coil springs 59 and 60 and the air elastic extension force of the gas spring 39 is lost, It is possible to obtain a smooth opening and closing without being greatly affected by. In addition, when the lifting force or the pulling force applied to the door 10 is relatively large and the arm member 21 is about to rotate rapidly, the relative rotation of the plate member 80 within the casing 71 tends to become faster, resulting in viscosity. Since the viscous shear resistance generated by the body 74 is increased and this large viscous shear resistance is applied to the arm member 21, a braking force proportional to the rotational speed substantially acts on the arm member 21, and the door 10 It is possible to avoid a situation in which the abrupt rotation causes a collision with the ground or the stopper and an unpleasant noise is generated.
[0047]
Instead of or together with the above, a long hole is formed in the casing 71 of the selection generating means 13, and the other end 89 of the connecting rod 86 is selected by this long hole and the connecting pin 90 inserted through the long hole. You may connect to the generation | occurrence | production means 13 so that rotation and direct movement are possible. Further, the connecting rod 86 may be connected to the shaft 81 and the one-way clutch 66 may be interposed between the casing 71 and the support column 2 so as to transmit the rotation of the arm member 21 to the shaft 81.
[0048]
In the above example, the gap forming body 73 is configured by the plate body 80 without unevenness, but instead, as shown in FIG. 7, a plurality of protrusions 91 are formed concentrically on both surfaces of the plate body 80. In this case, the casing 71 may be formed concentrically with a recess 92 for receiving the projection. Between the gap forming body 73 having the projection 91 and the casing 71 having the recess 92, The gap 72 may be filled with a viscous body 74 and operated in the same manner as described above.
[0049]
Further, the other end 89 of the connecting rod 86 may be connected to the casing 71 only by the connecting pin 90 without being formed with the long hole 102, and further, the action by the long hole 102 is not required. The transmission means 15 includes, instead of the connecting rod 86, a winding transmission mechanism including an endless chain and a sprocket wheel around which the endless chain is wound, or a gear mechanism including a plurality of meshed gears. Further, it may be configured from a common shaft that directly transmits the rotation of the arm means 6 to the gap forming body 73.
[0050]
【The invention's effect】
As described above, according to the present invention, even when the manual force applied to the door is larger than usual, the door can be smoothly opened and closed without causing abrupt rotation of the arm means and the door. The generation of unpleasant noise due to the collision of the means can be eliminated, the life can be extended, and the door can be opened lightly with a small operating force. For example, a gas spring is used for the elastic force applying means In some cases, it is possible to eliminate a situation where a large operating force is required for opening the door in winter, and in addition, it is possible to start the door closing with a small operating force.
[Brief description of the drawings]
FIG. 1 is a perspective view of a preferred embodiment of the present invention.
FIG. 2 is an explanatory side view of the upper part of the fully-closed column of the embodiment shown in FIG. 1;
FIG. 3 is an explanatory side view of the lower portion of the column of the embodiment shown in FIG. 1;
4 is an explanatory front view of the upper portion of the column of the embodiment shown in FIG. 1; FIG.
FIG. 5 is an explanatory plan view of the viscous shear resistance applying unit of the embodiment shown in FIG. 1;
6 is an explanatory side view of the upper part of the fully-opening column of the embodiment shown in FIG. 1. FIG.
7 is a plan sectional view of another viscous shear resistance applying unit that can be applied to the embodiment shown in FIG. 1. FIG.
[Explanation of symbols]
1 flip-up gate
2 props
6 Arm means
10 doors
11 Elastic force applying means
13 Selection generation means
15 Transmission means

Claims

A strut, arm means supported at one end so as to be rotatable in a vertical plane on the strut, a door attached to the other end of the arm means, and a direction in which the door jumps up against its own weight The elastic force applying means for applying the elastic rotational force to the arm means, and in the transmitted rotation in one direction, a viscous shear resistance force that resists the rotation is generated, and in the transmitted rotation in the other direction. The means for selectively generating the viscous shear resistance force and the means for selectively generating the viscous shear resistance force so that the viscous shear resistance force against the rotation is not generated are at least slightly opened in the opening operation. From the door to the halfway opening, the rotation of the arm means is transmitted as rotation in the other direction, and at least from the halfway door opening to the full opening after the halfway opening in the door opening operation and from at least the middle door closing in the door closing operation Complete Until the door is closed, the rotation of the arm means is transmitted as rotation in one direction, and the viscous shear resistance generated in the means for selectively generating the viscous shear resistance is used as the resistance against the rotation of the arm means. A flip-up gate having a transmission means for transmitting to the arm means.

2. The spring-up according to claim 1, wherein the transmission means includes a connecting rod having one end rotatably connected to the arm means and the other end rotatably connected to the means for selectively generating the viscous shear resistance. Ceremonial gate.

The flip-up gate according to claim 2, wherein the other end of the connecting rod is further connected to a means for selectively generating a viscous shear resistance force so as to be further movable.

The other end of the connecting rod is turned to a means for selectively generating a viscous shear resistance force by a long hole formed in the means for selectively generating the viscous shear resistance force and a connection pin inserted through the long hole. 4. The flip-up type gate according to claim 2, wherein the gate is connected so as to be movable and linearly movable.

The other end of the connecting rod can be rotated and linearly moved by means of a long hole formed in the other end of the connecting rod and a connecting pin inserted through the long hole to selectively generate viscous shear resistance. The flip-up gate according to any one of claims 2 to 4, which is connected.

A strut, arm means supported at one end so as to be rotatable in a vertical plane on the strut, a door attached to the other end of the arm means, and a direction in which the door jumps up against its own weight The elastic force applying means for applying the elastic rotational force to the arm means, and in the transmitted rotation in one direction, a viscous shear resistance force that resists the rotation is generated, and in the transmitted rotation in the other direction. The means for selectively generating the viscous shear resistance force and the means for selectively generating the viscous shear resistance force so that the viscous shear resistance force against the rotation is not generated are at least slightly opened in the opening operation. From the door to the middle door, the rotation of the arm means is transmitted as rotation in the other direction, and at the middle of the door closing operation, the rotation of the arm means is transmitted as rotation in one direction, and viscous shearing is performed. resistance Transmitting means for transmitting the viscous shear resistance generated in the means for selectively generating to the arm means as a resistance force against the rotation of the arm means, and one end of the transmission means to the arm means. A flip-up type gate having a connecting rod that is pivotally connected to a means for selectively generating a viscous shear resistance force so that the other end is pivotable and linearly movable.

The other end of the connecting rod is turned to a means for selectively generating a viscous shear resistance force by a long hole formed in the means for selectively generating the viscous shear resistance force and a connecting pin inserted through the long hole. The flip-up type gate according to claim 6, which is connected to be movable and linearly movable.

The other end of the connecting rod can be rotated and linearly moved by means of a long hole formed in the other end of the connecting rod and a connecting pin inserted through the long hole to selectively generate viscous shear resistance. The flip-up gate according to claim 6 or 7, which is connected.

The transmission means is a means for selectively generating a viscous shear resistance force, from at least before halfway opening in the opening operation to completely opening the door, and from the halfway closing to full closing in the closing operation. The flip-up gate according to any one of claims 6 to 8, wherein the flip-up gate is configured to transmit the rotation as a rotation in one direction.

The means for selectively generating the viscous shear resistance force includes a viscous shear resistance force generation means for generating the viscous shear resistance force, and operates the viscous shear resistance force generation means in the transmitted rotation in one direction while transmitting it. The flip-up type gate according to any one of claims 1 to 9, further comprising a one-way clutch that deactivates the viscous shear resistance generating means in the rotation in the other direction.

The viscous shear resistance generating means includes a casing, a gap forming body that is accommodated in the casing so as to be rotatable relative to the casing, and forms a gap in the casing in cooperation with the casing, and the gap formation. A viscous body filled in a gap between the body and the casing, and a shaft to which the gap forming body is fixed and is relatively rotatable with respect to the casing. The flip-up gate according to claim 10, which is interposed between any one of the shaft and the casing and the support column.

The flip-up type according to claim 11, wherein the transmission means is coupled to the casing so as to transmit the rotation of the arm means to the casing, and the one-way clutch is interposed between the shaft and the support column. Gate.

12. The flip-up type according to claim 11, wherein the transmission means is coupled to the shaft so as to transmit the rotation of the arm means to the shaft, and the one-way clutch is interposed between the casing and the support column. Gate.

The gap forming body includes a plate body, the plate body is formed with a plurality of concentric projections, and the casing is formed with concentric recesses for receiving the projections. Item 14. The flip-up gate according to any one of items 11 to 13.

The transmission means is a means for selectively generating a viscous shear resistance force, from the fully closed door to the minute door in the opening operation, from the halfway door to the near-open door, and until the middle door in the closing operation. The flip-up gate according to any one of claims 1 to 14, which is configured not to transmit rotation.

The transmission means converts the viscous shear resistance force generated in the means for selectively generating the viscous shear resistance force as resistance force against the rotation of the arm means and gradually increasing in the closing operation. The flip-up gate according to any one of claims 1 to 15, wherein the flip-up gate is configured to be transmitted to the arm means via the arm means.

17. The spring according to claim 1, wherein the elastic force applying means includes a pair of coil springs arranged concentrically, and the pair of coil springs have different elastic coefficients. Raised gate.