JP2004332267A - Winding shaft structure of opening-closing device - Google Patents

Winding shaft structure of opening-closing device Download PDF

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Publication number
JP2004332267A
JP2004332267A JP2003126467A JP2003126467A JP2004332267A JP 2004332267 A JP2004332267 A JP 2004332267A JP 2003126467 A JP2003126467 A JP 2003126467A JP 2003126467 A JP2003126467 A JP 2003126467A JP 2004332267 A JP2004332267 A JP 2004332267A
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Japan
Prior art keywords
opening
winding shaft
closing body
closing
thickness direction
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JP2003126467A
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JP4141313B2 (en
Inventor
Norio Ishikura
則夫 石倉
Toshiyuki Ohashi
利幸 大橋
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Bunka Shutter Co Ltd
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Bunka Shutter Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding shaft structure of an opening-closing device capable of restraining vibration in the thickness direction of an opening-closing body caused by winding-delivering operation of a winding shaft. <P>SOLUTION: This winding shaft structure of the opening-closing device has the opening-closing body 10 having a recessed part in the opening-closing body width direction on at least one surface, and the winding shaft 20 capable of winding or delivering the opening-closing body 10; winds or delivers the opening-closing body 10 by the winding shaft 20 in a state of turning the recessed part 11a to the winding shaft 20 side; and supports the winding shaft 20, so as to reciprocatingly slowly move in the opening-closing body thickness direction, by the vibration in the opening-closing body thickness direction in the opening-closing body 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、開閉動作する開閉体を巻取り軸に巻回するようにしたシャッター装置等の開閉装置の巻取り軸構造に関するものである。
【0002】
【従来の技術】
従来、この種の巻取り軸構造には、例えば図8に示すように、複数のスラット111を連接してなる開閉体110と、該開閉体110を巻き取ったり繰出したりする巻取り軸120と、該巻取り軸120の下方側で開閉体110を上下の開閉方向へ導くガイドレール130とを具備したものがある(例えば、特許文献1の第6図参照)。
【0003】
上記従来技術によれば、図8(a)に示すように、巻取り軸120に接触したスラット111の開閉体開閉方向の略中心が、巻取り軸120の水平方向中心線に略一致または近接した状態と、図8(b)に示すように、巻取り軸120に接触したスラット111の開閉体開閉方向の端部が、巻取り軸120の水平方向中心線に略一致または近接した状態とでは、巻取り軸120の略水平方向中心線上における巻取り軸120外周面と、複数のスラット111における吊り下げ状になっている部分の外面との距離が異なる。この距離は、例えば、図8(a)に示す状態では寸法h1となり、図8(b)に示す状態では寸法h2となり、h1の方がh2よりも小さくなる。
したがって、上記従来技術では、巻取り軸120により開閉体110が巻取られたり繰出されたりすると、上下方向へ開閉動作する開閉体110が、おおよそ前記h1と前記h2との差の幅の開閉体厚さ方向の振動を発生する場合があった。
この場合、前記振動は開閉体110の下部側にも伝達するため、開閉体110は、開閉動作中、上下方向にわたって波打つようにして振動を生じることになる。
そのため、開閉体110は、上下方向へ開閉動作しながら、該開閉体110の幅方向の端部側を、ガイドレール130の内面に対して、当接及び摺接させる。したがって、開閉体110の端部側やガイドレール130における当接及び摺接による摩擦抵抗等が大きくなったり、上記波打つような振動に起因して騒音を発生したりするおそれがあった。
特に、図8に示す開閉装置が、開閉体の下端側を手や引出具等で上げ下げするタイプの開閉装置である場合には、上記振動に起因して大きな開閉力を要するようになる上、開閉体を強く引出そうとした際等に、上記振動がより大きく発生する傾向にあった。
【0004】
また、従来の開閉装置の巻取り軸構造には、特許文献2に記載された発明のように、揺動リンク機構を用いて巻取り軸をガイドレールの上方側延長線に対して接近離間するように支持するとともに、その巻取り軸を螺子機構により前記接近離間する方向へ強制的に移動させるようにした巻取装置がある。
この従来技術によれば、開閉体が巻取り軸に巻き取られる際には、その巻取り動作に伴って、巻取り軸を前記螺子機構によりガイドレールの上方側延長線から離間する方向へ移動させ、開閉体が巻取り軸から繰出される際には、その繰出し動作に伴って、巻取り軸を前記螺子機構によりガイドレールの上方側延長線に接近する方向へ移動させる。
したがって、この従来技術では、巻取り軸に巻かれた開閉体の巻径の大小に拘わらずに、開閉体が前記上方側延長線に沿った上下方向へ開閉動作することになるため、開閉体の幅方向端部側とガイドレールの内面との当接や摺接等を軽減することができる。
【0005】
しかしながら、上記後者の従来技術においても、上記前者の従来技術と同様に、巻取り軸の略水平方向中心線上において、巻取り軸の外周面とスラット外面との距離が変化するため、この現象に起因して、開閉体の上下方向にわたる上記波打ち振動を発生するおそれがあった。
【0006】
【特許文献1】
実開平2−68099号公報(第6図参照)
【特許文献2】
特開2000−145325号公報
【0007】
【発明が解決しようとする課題】
本発明は上記従来事情に鑑みてなされたものであり、その課題とする処は、巻取り軸の巻取り繰出し動作に伴う開閉体厚さ方向の振動を抑制することができる開閉装置の巻取り軸構造を提供することにある。
【0008】
【課題を解決するための手段】
上記課題を解決するために第一の発明は、少なくとも一方の面に開閉体幅方向にわたる凹部を有する開閉体と、該開閉体を巻取り又は繰出し可能な巻取り軸とを備え、前記凹部を前記巻取り軸側へ向けた状態で、前記開閉体を前記巻取り軸により巻取り又は繰出すようにした開閉装置の巻取り軸構造において、前記巻取り軸を、前記開閉体における開閉体厚さ方向の振動によって、同開閉体厚さ方向へ自在に往復微動するように支持したことを特徴とする開閉装置の巻取り軸構造。
【0009】
ここで、本発明における開閉装置の巻取り軸構造とは、空間を仕切ったり開放したりする開閉体を、巻取り軸によって巻取ったり繰出したりする開閉装置における巻取り軸構造を意味し、開閉体が開動作のみを行う態様や、開閉体が閉動作のみを行う態様、開閉体が開動作と閉動作との双方を行う態様等を含む。
【0010】
上記開閉体は、少なくとも一方の面に開閉体幅方向にわたって形成された凹部を、上記巻取り軸に巻回された状態で上記巻取り軸側へ向けるように形成している開閉体であればよい。
尚、上記凹部には、該凹部の底面が閉鎖された態様と、該凹部の底面が貫通された態様との双方が含まれる。すなわち、該凹部の底面が閉鎖された態様の具体例としては、縦断面略凹状のスラットやパネルを複数連接してなる開閉体が挙げられる。また、該凹部の底面が貫通された態様の具体例としては、複数のパイプ材を所定間隔置きに開閉方向に連設してなる態様が挙げられる。
また、上記凹部には、上記開閉体の表面側に形成される凹部と同開閉体の裏面側に形成される凹部との双方を含む。例えば、上記開閉体が複数の縦断面凹状のスラットを連接してなる態様であった場合、上記凹部は、開閉体裏面側の各スラットの凹状部分であってもよいし、開閉体表面側において連接方向に隣り合うスラット間に形成される凹状部分であってもよい。尚、後者の場合、上記開閉体は、その表面側を巻取り軸へ向けて巻回することになる(このことについて当業者間では外巻きと称される場合がある。)。
また、上記開閉体は、前記凹部を、少なくとも巻取り軸に巻回される部位に配置していればよく、例えば、上記巻取り軸に巻回される部位に部分的に前記スラットや、縦断面略凹状のパネル、前記パイプ等を単数若しくは複数配設し、他の部位をシート状部材等の他の部材とした開閉体であってもよい。
【0011】
尚、上記開閉体幅方向とは、上記開閉体の開閉方向と略直交する方向であって、上記開閉体の厚さ方向ではない方向を意味し、以下に記載される同様の表現の箇所も同じ意味とする。
また、上記開閉体厚さ方向とは、上記巻取り軸から繰出された状態の開閉体の厚さ方向であって、上記開閉体幅方向に略直交し且つ開閉体開閉方向にも略直交する方向を意味し、以下に記載される同様の表現の箇所も同じ意味とする。
また、上記開閉体の開閉方向とは、上記開閉体が開閉動作する方向を意味し、以下に記載される同様の表現の箇所も同じ意味とする。
【0012】
また、上記巻取り軸とは、上記開閉体を巻取ったり繰出したりする構造のものであればよく、この巻取り軸には、回動可能に支持された軸本体を備え、回動する該軸本体に上記開閉体を巻取ったり該軸本体から上記開閉体を繰出したりするようにした態様、回動しないように支持された軸本体と、該軸本体の周囲で回動するように支持された略筒状等の回動体とを備え、回動する前記回動体に上記開閉体を巻取ったり前記回動体から上記開閉体を繰出したりするようにした態様等を含む。
また、この巻取り軸は、上記開閉体を巻取る動作と上記開閉体を繰出す動作との内、一方の動作のみを行う態様であってもよいし、双方の動作を行う態様であってもよい。
また、上記「前記巻取り軸を、前記開閉体の開閉体厚さ方向の振動によって同開閉体厚さ方向へ自在に往復微動するように支持した」とは、上記往復微動のための駆動源を備えず、上記開閉体の開閉体厚さ方向の振動によって、上記巻取り軸を開閉体厚さ方向に自在に往復微動するようにした構成であればよい。
【0013】
なお、上記往復微動とは、上記巻取り軸が、上記開閉体の開閉体厚さ方向の振動の幅と同程度または該振動の幅よりも小さい幅で、開閉体厚さ方向へ往復運動する際の動きを意味する。
【0014】
上記構成の好ましい態様として、第二の発明では、上記巻取り軸の端部側を支持する支持部材と、上記往復微動の際の移動抵抗を軽減する移動補助手段とを備え、前記支持部材は、上記開閉体厚さ方向へ延設された案内部を有し、前記移動補助手段を介して前記案内部に導かれることで、上記往復微動するように支持されていることを特徴とする。
【0015】
ここで、上記移動補助手段とは、上記巻取り軸が上記往復微動する際の移動抵抗を軽減する構成、すなわち、上記巻取り軸が上記往復微動する際に、上記巻取り軸の端部側と上記案内部との間に発生する摩擦等の抵抗を軽減するものであればよい。
この移動補助手段の好ましい具体例としては、上記移動抵抗を特に小さくできるものとして、一方の部材と他方の部材との間で転動することで該一方の部材を該他方の部材に対して移動させる転動部材、例えば車輪やローラー等が挙げられる。また、この移動補助手段の他例としては、一方の部材に突条を設け、他方の部材を前記突条の長手方向に摺接させることで、一方の部材と他方の部材との間の摩擦抵抗を小さくしするようにした技術的手段とすることも可能である。
そして、この移動補助手段は、例えば、上記巻取り軸の端部側に装着されて、上記案内部に接触するようにしてもよいし、上記案内部に装着されて、上記巻取り軸に接触するようにしてもよい。更に他例としては、上記移動補助手段を上記巻取り軸の端部側と上記案内部との双方に装着し、これら双方の移動補助手段が互いに接触し合うようにしたものであってもよい。
【0016】
また、上記支持部材は、上記巻取り軸を上記往復微動させるための案内部を有する部材であって、躯体側の部材や部位に固定された部材である。
上記支持部材の案内部は、上記巻取り軸の端部側を、上記移動補助部材を介して支持するとともに上記開閉体厚さ方向へ導くように形成され、具体的には、上記開閉体厚さ方向へ延びる平面や縁等によって構成すればよい。
また、上記案内部の長さは、少なくとも上記巻取り軸が上記開閉体厚さ方向へ上記往復微動可能な長さに、設定されていればよい。
【0017】
更に、第三の発明では、上記移動補助手段は、上記案内部を開閉体開閉方向の両側から挟むように、上記巻取り軸の端部側に複数取付けられていることを特徴とする。
【0018】
すなわち、この第三の発明によれば、複数の移動補助手段は、上記案内部を開閉体開閉方向の両側から挟むようにして配置され、上記案内部に対して開閉体厚さ方向へ往復微動することになる。
したがって、この第三の発明において、上記移動補助手段は、上記案内部を開閉体開閉方向の両側から挟むようにして、少なくとも二つ以上設けられる。
【0019】
更に、第四の発明では、上記両側の上記移動補助手段の内、少なくとも一方側の移動補助手段は、上記巻取り軸の軸心に対して偏心した位置であって、上記案内部と上記巻取り軸の繰出し回転方向に当接する位置に、配置されていることを特徴とする。
【0020】
ここで、上記繰出し回転方向とは、上記巻取り軸が上記開閉体を繰出す際に外周面を回転させる方向を意味する。
【0021】
更に、第五の発明では、上記移動補助手段は、上記巻取り軸の端部側に取付けられ、上記案内部は、上記移動補助手段を開閉体開閉方向の両側から挟むようにして、略平行に二箇所配置されていることを特徴とする。
【0022】
すなわち、この第五の発明によれば、二つの上記案内部は、開閉体開閉方向に所定間隔を置いて、略平行に二つ配設され、これら二つの案内部間に、上記移動補助手段が配置される。
【0023】
更に、第六の発明によれば、上記移動補助手段と上記案内部とは、断面略凹凸状に係合するように、それぞれ形成されていることを特徴とする。
【0024】
ここで、上記「断面略凹凸状に係合するように」とは、上記移動補助手段と上記案内部との内の一方に凹状の係合部が形成され、他方の部材に前記係合部と係合可能な凸状の被係合部が形成されていることを意味する。そして、この第六の発明は、前記係合部と前記被係合部との係合状態を維持しながら、上記巻取り軸を上記案内部に沿って往復微動させる。
【0025】
更に、第七の発明では、上記開閉体を開閉方向へ案内するガイドレールを備え、上記案内部は、上記開閉体が巻取られたり繰出されたりする際に上記巻取り軸に作用する略水平方向の力によって、上記巻取り軸を上記開閉体厚さ方向へ移動可能な長さの略水平状に形成されていることを特微とする。
【0026】
ここで、上記略水平方向の力とは、上記開閉体が上記巻取り軸に巻取られる際に、上記巻取り軸が上記ガイドレールの巻取り軸側延長線から離れようとする力と、上記開閉体が上記巻取り軸から繰出される際に、上記巻取り軸が前記巻取り軸側延長線に近付こうとする力との双方の力を意味する。
また、上記「上記巻取り軸を上記開閉体厚さ方向へ移動可能な長さ」とは、上記案内部の長さを、上記巻取り軸を上記ガイドレールの巻取り軸側延長線から離れる方向、又は上記巻取り軸が前記巻取り軸側延長線に近付く方向へ、略連続的に移動可能な長さに設定していることを意味する。この構成によれば、上記巻取り軸は、上記往復微動しながら、上記開閉体が巻取られたり繰出されたりする際に上記巻取り軸に作用する略水平方向の力によって上記開閉体厚さ方向へ移動することになる。
【0027】
更に、第八の発明によれば、上記支持部材に、上記巻取り軸側の部材に当接することで上記巻取り軸の開閉体厚さ方向への移動を規制する規制部を設けたことを特徴とする。
【0028】
ここで、上記巻取り軸側の部材とは、上記巻取り軸と一体的に移動する部材であればよく、具体例としては、上記巻取り軸に取付けられた上記移動補助部材や、上記巻取り軸を構成する軸本体、上記巻取り軸に取付けられたブラケット等が挙げられる。
また、上記規制部とは、上記巻取り軸が開閉体厚さ方向へ移動した際に、その移動中の巻取り軸に当接することで、移動量を規制する部材である。
この規制部の態様には、上記巻取り軸の軸心がガイドレールの巻取り軸側延長線から離れる方向へ移動するのを規制する態様と、上記巻取り軸の軸心がガイドレールの巻取り軸側延長線に近付く方向へ移動するのを規制する態様とがあり、それら双方の態様の内、一方のみを設けてよいし双方を設けてもよい。
また、この規制部の具体例としては、開閉体厚さ方向へ移動した際の上記巻取り軸側の部材に当接するように上記支持部材に設けられたリブや、突起、ボルト、リベット、その他の部材等が挙げられる。
【0029】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
本実施の形態による開閉装置の巻取り軸構造の一例は、住宅やビル、倉庫、工場などの構築・構造物の開口部分や、構築・構造物の内部に配設され、前記開口部分を開閉したり、構築・構造物内部の空間を仕切ったり開放したりする所謂シャッター装置における巻取り軸構造、特に開閉体の閉鎖方向の端部側を手や引出具等で上げ下げするタイプのシャッター装置に適した巻取り軸構造として説明する。
【0030】
この巻取り軸構造を備えた開閉装置1は、開閉動作可能な開閉体10と、該開閉体10を巻取ったり繰出したりする巻取り軸20と、巻取り軸20の両端面に取付けられた二つの移動補助手段30,30と、該巻取り軸20をその両端側の各々において前記移動補助手段30,30を介して支持する支持部材40と、巻取り軸20の下方側で開閉体10の幅方向の両端側の各々を開閉方向(図2乃至4における上下方向)へ案内するガイドレール50とを具備し、前記巻取り軸20を、前記開閉体10の開閉体厚さ方向(図2乃至4における略水平方向)の振動によって同開閉体厚さ方向へ自在に往復微動させる。
【0031】
開閉体10は、複数のスラット11を、隣接するスラット11,11間で折曲げられるように連接してなる。
各スラット11は、所定厚さの金属板を曲げ加工してなり、平坦部とその上下端部のカール部とからなる縦断面略凹状で、且つ開閉体幅方向(図2乃至4における奥行き方向)にわたる平面視略長尺矩形状に形成されている。
そして、上記構成の開閉体10は、各スラット11の内面側の凹部11aを巻取り軸20側へ向けて、巻取り軸20により巻き取られたり繰出されたりする。
【0032】
巻取り軸20は、後述する支持部材40によって回動不能に支持された軸本体21の外周に、略筒状のドラム22を回動自在に支持するとともに、軸本体21とドラム22との間における軸本体21の周囲に、コイルバネ23(図1参照)を巻回している。このコイルバネ23は、軸本体21に対してドラム22を巻取り方向(図2によれば時計方向)へ回転させるように、一端部を軸本体21に止着するとともに他端をドラム22に止着している。
【0033】
上記構成によれば、開閉体10が閉鎖される際、巻取り軸20に巻回されている開閉体10が手や引出具等で引出されることで、ドラム22がコイルバネ23による巻取り回転方向の付勢に抗して逆方向(図2によれば反時計方向)へ回転する。
また、開閉体10が開放される際には、開閉体10の閉鎖方向の端部側を手や引出具等で引き上げる力が、ドラム22をコイルバネ23の付勢により巻取り回転方向へ回転しようとする力により補助される。
【0034】
また、上記巻取り軸20における軸本体21の端面には、後述する移動補助手段30,30を支持する支持ブラケット24が固定されている。
この支持ブラケット24は、断面略コ字状の固定部24aの両端に、断面略横向きL字状の支持部24b,24bを一体に具備してなる。
前記固定部24aは、軸本体21の端部に挿入され、ボルト及びナットや、リベット等の止着手段、及びスペーサー等を用いて軸本体21に対して固定される。
前記各支持部24bは、後述する支持部材40側の端面に、移動補助手段30を軸支している。
【0035】
各移動補助手段30は、一方の部材と他方の部材との間で転動することにより一方の部材を他方の部材に対してスムーズに移動させる転動部材であればよく、本実施の形態の好ましい一例によれば、支持ブラケット24の支持部24bに貫通固定された軸部31と、該軸部31との間にベアリング等を介して回動自在に軸支されたローラー部材32とからなり、ローラー部材32の外周面を、後述する支持部材40に沿ってスムーズに転動させる。
【0036】
そして、上記構成の各移動補助手段30は、巻取り軸20の軸心に対して偏心した位置であって、後述する案内部41bと巻取り軸20の繰出し回転方向に当接する位置に配置されて、支持ブラケット24の各支持部24bに取付けられている。
【0037】
すなわち、図2に示す一例によれば、上側の移動補助手段30は、巻取り軸20の軸心に対して左斜め上方に偏心した位置であって、その直下の案内部41bに対して、巻取り軸20の前記繰出し回転方向(図2によれば反時計方向)へ当接した位置に配置されている。
また、同図示例によれば、下側の移動補助手段30は、巻取り軸20の軸心に対して右斜め下方に偏心した位置であって、その直上の案内部41bに対して、巻取り軸20の前記繰出し回転方向(図2によれば反時計方向)へ当接した位置に配置されている。
【0038】
上記移動補助手段30の配置によれば、例えば開閉体10が強く引出された際等に、巻取り軸20の軸本体21に上記繰出し回転方向の力が作用したとしても、二つの移動補助手段30,30がそれぞれ案内部41bに当接することで、前記力に対抗する。
【0039】
また、上下の移動補助手段30,30は、案内部41b,41bを開閉体開閉方向(図示例によれば上下方向)の両側から挟むようにして配置しているため、仮に巻取り軸20に開閉体開閉方向の力が作用したとしても、案内部41b,41bに対して安定した接触を維持する。
【0040】
また、支持部材40の構成について詳細に説明すれば、この支持部材40は、同形状の二つの枠部材41,41を、上下左右が逆向きとなるように、上下方向に接合させて構成されている。
【0041】
各枠部材41は、開閉体開閉方向の一端側と他端側とに略平行な二つの案内部41a,41bを有する縦断面略コ字状に形成されている。
【0042】
前記一端側の案内部41aは、巻取り軸20を開閉体厚さ方向へ略連続的に移動可能な長さの平坦状かつ水平状に延設され、図示例によれば、巻取り軸20におけるドラム22の外径の約半分の長さ又は約半分よりも若干長い長さに形成されている。
【0043】
また、前記他端側の案内部41bは、前記案内部41aの開閉体厚さ方向の一端側に、規制部41b1を有する形状に形成されている。
【0044】
この規制部41b1は、移動した際の上記移動補助手段30に当接することで、移動補助手段30の移動を規制するように、傾斜状に曲げ形成された部位である。
【0045】
そして、上記構成の二つの枠部材41,41は、前記案内部41b,41b同士を背中合わせ状に接合して、収納ケース等の躯体側部材60に、ボルト及びナットや、リベット等の止着手段70により固定される。
したがって、上記規制部41b1は、開閉体厚さ方向の両端側に配置されて移動補助手段30,30の移動距離を制限することになる。
【0046】
そして、上記構成の支持部材40には、上記二つの移動補助手段30,30が係合される。すなわち、図2に示すように、上側の移動補助手段30が、支持部材40における上側の枠部材41内に係合され、下側の移動補助手段30が、持部材40における下側の枠部材41内に係合される。
【0047】
この係合状態において、各枠部材41における上下の案内部41a,41bは、各移動補助手段30を中央に挟むようにして、上下に略平行に位置するため、各移動補助手段30の上下方向への移動を規制して、各移動補助手段30の脱落を防止する。
【0048】
更に、本実施の形態の好ましい一例によれば、上記係合状態において、移動補助手段30の側端面と躯体側部材60側の止着手段70との間の寸法aを、同移動補助手段30の同側端面と支持部材40の案内部41bの端面との間の寸法bよりも小さくすることでも、巻取り軸20が軸方向へ移動して、移動補助手段30,30が支持部材40から脱落するのを防止している(図1参照)。
より具体的に説明すれば、図1において、巻取り軸20が軸方向の右側へ移動したとしても、巻取り軸20の右端側の移動補助手段30,30(図示せず)の側端面を、同右端側の止着手段70(図示せず)に当接させることで、左端側の移動補助手段30,30が支持部材40から軸方向へ抜け出してしまうのを防止している。
【0049】
また、本実施の形態の好ましい一例によれば、上述したように支持部材40に規制部41b1,41b1を設けているため、上記巻取り軸20の移動距離は、必要最小限の距離に制限されることになる。したがって、収納ケース等の躯体側部材60は、開閉体厚さ方向に小型化されている。
【0050】
次に、上記構成の開閉装置1について、その作用効果を詳細に説明する。
上記開閉装置1によれば、巻取り軸20に接触したスラット11の開閉体開閉方向の略中心が、巻取り軸20の水平方向中心線に略一致または近接した状態(図3(a)参照)と、巻取り軸20に接触したスラット11の開閉体開閉方向の端部が、巻取り軸20の水平方向中心線に略一致または近接した状態(図3(b)参照)とでは、巻取り軸20の略水平方向中心線上における巻取り軸20外周面(又は巻取り軸20に巻回された開閉体10であって外側から二層目となる開閉体10の外周面)と、複数のスラット11における吊り下げ状になっている部分の外面との距離が異なる。この距離は、例えば、図3(a)に示す状態では寸法H1となり、図3(b)に示す状態では寸法H2となり、H1の方がH2よりも小さくなる。
【0051】
したがって、巻取り軸20により開閉体10が巻取られたり繰出されたりすると、上下方向へ開閉動作する開閉体10が、おおよそ前記H1と前記H2との差の幅で振動しようとするが、開閉装置1は、前記振動の開閉体厚さ方向(図3における水平方向)の成分により、巻取り軸20を前記開閉体厚さ方向へ往復微動させるため、前記振動が抑制されることになる。
なお、本実施の形態の好ましい一例によれば、前記往復微動の際の移動抵抗を、移動補助手段30によって極力軽減することで、前記振動抑制効果を向上している。
【0052】
また、図4(a)に示すように、開閉体10が巻取り軸20に巻取られると、巻取り軸20周りの開閉体10の巻径が次第に大きくなり、開閉体10の吊り下げられた部分は、ガイドレール50上端側との間において、右斜め下向きの状態となる。
【0053】
すると、吊り下げられた開閉体10と巻取り軸20に巻き取られた開閉体10の外周面との接点Pには、該接点Pよりも下側の開閉体10の重量と、巻取り軸20が該開閉体10を左斜め上方向へ引っ張る力の反力との双方の力により、右斜め下向きの力F1が作用する。
この力F1は、図4(a)に示すように、右向きの力Frの成分と、下向きの力Fdの成分とを含む力である。
【0054】
したがって、巻取り軸20は、上述したように開閉体厚さ方向へ微動しながら、前記右向きの力Frの成分によって右方向へ移動することになり、その移動中、開閉体10における上記接点Pよりも下方側の部位は、ガイドレール50に沿う略直線状に維持される。
【0055】
また、図4(b)に示すように、開閉体10が巻取り軸20から繰出されると、巻取り軸20周りの開閉体10の巻径が次第に小さくなり、開閉体10の吊り下げられた部分は、ガイドレール50上端側との間において、左斜め下向きの状態となる。
【0056】
すると、吊り下げられた開閉体10と巻取り軸20に巻き取られた開閉体10の外周面との接点Pには、該接点Pよりも下側の開閉体10の重量と、巻取り軸20が該開閉体10を右斜め上方向へ引っ張る力の反力との双方の力により、左斜め下向きの力F2が作用する。
この力F2は、図4(b)に示すように、左向きの力Flの成分と、下向きの力Fdの成分とを含む力である。
【0057】
したがって、巻取り軸20は、上述したように開閉体厚さ方向へ微動しながら、前記左向きの力Flの成分によって左方向へ移動することになり、その移動中、開閉体10における上記接点Pよりも下方側の部位は、ガイドレール50の内面に沿う略直線状に維持される。
【0058】
尚、図4(a)及び(b)は、上記作用をわかり易く説明するために、開閉体10の吊り下げられた部分を、極端に傾斜させて図示しているが、実際には、巻径に応じて巻取り軸20が移動するため、その移動中、開閉体10の吊り下げられた部分は、殆どガイドレール50に沿う略直線状に維持されることになる。
【0059】
また、本実施の形態の開閉装置1では、巻取り軸20の移動距離が規制部41b1,41b1により規制されるため、開閉体10が開き切る若干前と、同開閉体10が閉まり切る若干前とに、巻取り軸20の上記移動が停止することになる。
よって、当該開閉装置1によれば、は、巻取り軸20の移動距離が規制されることにより、前記開き切る若干前及び前記閉まり切る若干前の状態を除く開閉体10の開閉動作中に、巻取り軸20を開閉体厚さ方向へ移動させて、開閉体10の幅方向端部とガイドレール50内面との当接及び摺接が低減されることになる。
【0060】
前記開き切る若干前とは、開閉体10の閉鎖方向端部が開放動作中に所定位置に差し掛かった際のことであり、この所定位置は、巻取り軸20に巻取られた開閉体10の外周部におけるガイドレール50側(図4(a)における左方向側)への突出量を、適宜量にするように設定されるのが好ましく、更には、開閉体10の巻取り軸20に吊り下げられた部分の角度を適宜角度とするように設定されるのが好ましい。
すなわち、前記突出量が大きすぎる場合には、巻取られた開閉体10の外周部が該開閉体10及び巻取り軸20を収納する収納ケース等に干渉することが懸念されるため、前記収納ケース等の寸法をガイドレール50側(図4(a)における左方向側)へ大きくする必要が生じてしまう。そこで、開閉体10の閉鎖方向端部が開放動作中に差し掛かる上記所定位置は、前記突出量が前記収納ケース等に干渉しない適宜量となるように設定される。
また、開閉体10の巻取り軸20に吊り下げられた部分の角度が大きすぎる場合には、巻取り軸20の回転抵抗が大きくなりすぎてしまうおそれがある。そこで、上記所定位置は、開閉体10の巻取り軸20に吊り下げられた部分の角度により、前記回転抵抗が大きくなりすぎない程度に設定される。
本実施の形態の好ましい一例である開閉装置1では、前記角度の設定による適宜な前記回転抵抗により、開閉体10を開き切る若干前に減速させるようにしており、そのことにより、開閉体10が開き切った際の衝撃及び騒音を緩和している。
なお、上記所定位置の好ましい一例としては、ガイドレール50の上部側三分の一以内の位置とする。
【0061】
また、前記閉まり切る若干前とは、開閉体10の閉鎖方向端部が閉鎖動作中に所定位置に差し掛かった際のことであり、この場合の所定位置は、開閉体10の巻取り軸20に吊り下げられた部分の角度を適宜角度とするように設定されるのが好ましい。
すなわち、開閉体10の巻取り軸20に吊り下げられた部分の角度が大きすぎる場合には、巻取り軸20の回転抵抗が大きくなりすぎてしまうおそれがある。そこで、上記所定位置は、開閉体10の巻取り軸20に吊り下げられた部分の角度により、前記回転抵抗が大きくなりすぎない程度に設定される。
本実施の形態の好ましい一例である開閉装置1では、前記角度の設定による適宜な前記回転抵抗により、開閉体10を閉まり切る若干前に減速させるようにしており、そのことにより、開閉体10が閉まり切った際の衝撃及び騒音を緩和している。
なお、この場合における前記所定位置の好ましい一例としては、ガイドレール50の下部側三分の一以内の位置とする。
【0062】
したがって、規制部41b1,規制部41b1間の距離は、上述した前者の所定位置および後者の所定位置を考慮して、開閉体10の閉鎖方向端部(図示によれば下端部)がガイドレール50の長さ方向における中央側の少なくとも三分の一の範囲内に位置する際に、巻取り軸20が開閉体厚さ方向へ移動するように設定される。
【0063】
よって、本実施の形態の開閉装置1においては、前記開き切る若干前及び前記閉まり切る若干前における開閉体10の開閉スピードが比較的遅く、開閉体10の厚さ方向の振動も比較的小さいため、開閉体10の幅方向端部とガイドレール50内面との当接及び摺接も比較的少ない。
【0064】
次に、本発明に係わる開閉装置の巻取り軸構造における他の実施の形態について説明する。この他の実施の形態について、上記開閉装置1と略同様の構成部位については、同一の符号を付けることで重複する詳細説明を省略する。
【0065】
図5に示す開閉装置2は、上記構成の開閉装置1に対して、上記移動補助手段30を移動補助手段81に、また上記支持部材40を支持部材82に、それぞれ置換した構成となっている。
【0066】
移動補助手段81は、巻取り軸20の軸本体21の端部側に、ブラケット及びベアリング等を介して回動自在に軸止されたローラー部材であり、開閉体厚さ方向へ複数配設されている。
各移動補助手段81の外周面には、後述する支持部材82のレール82a1と断面略凹凸状に係合させるための、凹部81aが全周にわたって形成されている。
【0067】
支持部材82は、開閉体厚さ方向へ延設された断面略L字状の二つの案内部材82a,82aを、上下で互いに逆向きとなるように、躯体側部材60の表面に止着してなる。
各案内部材82aの内面には、移動補助手段81の案内部材82aと断面略凹凸状に係合する断面略突状のレール82a1が、開閉体厚さ方向にわたって固定され、このレール82a1が、移動補助手段81を開閉開閉体厚さ方向に案内するための案内部となっている。
【0068】
また、双方の案内部材82a,82aにおける開閉体厚さ方向の両端側には、規制部82b,82bが配設されている。
各規制部82bは、双方の案内部材82aを貫通するボルトと、該ボルトの先端に螺合されるナットとからなる。そして、この規制部82bは、前記ボルトを巻取り軸20の軸本体21外周面に当接させることで、巻取り軸20の開閉体厚さ方向への移動を規制する(図6(b)参照)。
【0069】
上記構成の開閉装置2によれば、双方の案内部材82a,82aが移動補助手段81を開閉体開閉方向の両側から挟むようにして略平行に配置されているため、巻取り軸20の軸本体21が支持部材82から脱落するのを防止することができる。しかも、移動補助手段81と各案内部材82aとを断面凹凸状に係合させることで、前記脱落防止をより確実な構成としている。
その上、移動補助手段81が略平行な二箇所の案内部材82a間に複数配置されているため、例えば開閉体10が強く引出された際等に、巻取り軸20に繰出し回転方向の力が作用したとしても、複数の移動補助手段81を上下の案内部材82a,82a間に当接させることで、前記力に対抗する。したがって、巻取り軸20の支持構造を頑強にすることができる。
また、規制部82b,82bは、上記開閉装置1の規制部41b1,41b1同様に、巻取り軸20の移動量を規制することで、当該巻取り軸構造を収納するための収納ケース等を、開閉体厚さ方向に小型化する。
【0070】
尚、上記移動補助手段81を支持部材82に対して断面凹凸状に係合する手段は、上記態様に限定されるものでなく、図7に示す開閉装置3のようにしてもよい。
この開閉装置3によれば、移動補助手段91は、外周面を断面略半円状に形成したローラー部材であり、巻取り軸20の軸本体21の端部側にブラケットやベアリング等を介することで、回動自在に支持され、開閉体幅方向に複数配設されている。
また、支持部材92は、断面略コ字状に形成され、その上片部の内面と下片部の内面とに、それぞれ移動補助手段91と断面略凹凸状に係合して、移動補助手段91を開閉体厚さ方向へ案内する断面略凹状の案内部92aを形成しており、躯体側部材60に固定されている。
【0071】
この開閉装置3は、支持部材を一体の部材から構成することで、構造をより簡素化した好ましい態様である。なお、この開閉装置3では、規制部を図示していないが、上記開閉装置2同様の規制部82b,82bを上下の案内部92a,92aに貫通装着すればよい。また、巻取り軸20を開閉体10が全開及び全閉するまで移動させるように、両案内部92a,92aの開閉体厚さ方向の長さを設定し、規制部を備えない態様とすることも可能である。
【0072】
尚、図5及び図7は、巻取り軸20のドラム22及びコイルバネ23、開閉体10を省略することで、図示を明瞭にしているが、これらの部材は、上記開閉装置1と略同様にして設けられている。
【0073】
【発明の効果】
本発明は、以上説明したように構成されているので、以下に記載されるような作用効果を奏する。
第一の発明によれば、巻取り軸により開閉体を巻取ったり繰出したりする際、開閉体の凹部と巻取り軸の外周面との接触により、開閉体が厚さ方向へ振動しようとするが、その振動の開閉体厚さ方向の成分により、巻取り軸が開閉体厚さ方向へ微動するため、開閉体の前記振動を抑制することができる。
したがって、巻取り軸の巻取り繰出し動作に伴う開閉体厚さ方向の振動を抑制することができ、ひいては、前記振動に起因する開閉体やガイドレール等の騒音、及び開閉体の開閉力等を軽減することができる。
【0074】
更に、第二の発明によれば、移動補助手段により巻取り軸の移動抵抗が軽減されるため、開閉体の厚さ方向の振動に、巻取り軸の微動を追従させ易い。したがって、巻取り繰出し動作に伴う開閉体厚さ方向の振動を、より軽減することができる。
【0075】
更に、第三の発明によれば、巻取り軸の端部側の複数の移動補助手段が、案内部に対して開閉体開閉方向へ移動しないように配置されるため、仮に巻取り軸に開閉体開閉方向の力が作用したとしても、案内部に対する安定した接触を維持する。したがった、巻取り軸の端部側及び移動補助手段が案内部から脱落してしまうのを防止することができる。
【0076】
更に、第四の発明によれば、例えば開閉体が強く引出された際等に、巻取り軸に繰出し回転方向の力が作用したとしても、移動補助手段が案内部に当接することで、前記力に対抗する。したがって、巻取り軸の支持構造を頑強にすることができる。
【0077】
更に、第五の発明によれば、開閉体開閉方向に並ぶ略平行な二箇所の案内部によって移動補助手段を挟むようにしているため、簡素な構造によって移動補助手段と案内部との安定した接触を維持できる上、開閉体開閉方向の振動等によって巻取り軸の端部側及び移動補助手段が案内部から脱落するのを防止することができる。
【0078】
更に、第六の発明によれば、断面略凹凸状の係合により、移動補助手段が案内部から脱落するのを防止することができる。
【0079】
更に、第七の発明によれば、開閉体が巻取られる際、巻取り軸の軸心は、巻取られた開閉体の巻径が大きくなるに伴って、開閉体厚さ方向へ微動しながら、ガイドレールの巻取り軸側延長線から離れる方向へ移動する。また、開閉体が繰出される際には、巻取り軸の軸心は、巻取られた開閉体の巻径が小さくなるに伴って、開閉体厚さ方向へ微動しながら、ガイドレールの巻取り軸側延長線に近付く方向へ移動する。
したがって、簡素な構造でもって、開閉体におけるガイドレールよりも巻取り軸側の部位を、巻径の大小に応じて、ガイドレールの延長線に沿った略直線状に維持することができ、ひいては、開閉体の表裏面とガイドレールの上端側との摺接を少なくして、開閉体及びガイドレールの騒音及び開閉体の開閉力をより低減することができる。
【0080】
更に、第八の発明によれば、規制部により巻取り軸の開閉体厚さ方向への移動幅が規制されるため、当該巻取り軸構造の開閉体厚さ方向の最大寸法を必要最小限の寸法にすることができ、ひいては当該巻取り軸構造を収納する収納ケース等における開閉体厚さ方向の最大寸法を小さくすることができる。
しかも、規制部により開閉体の吊り下げられた部分を適当な角度とすることができるため、該角度により生じる巻取り軸の回転抵抗によって、開閉体10を、開き切る若干前及び閉まり切る若干前に減速させることができ、ひいては、開閉体が開き切った際や閉まり切った際における衝撃及び騒音を緩和することができる。
【図面の簡単な説明】
【図1】本発明に係わる開閉装置の巻取り軸構造の一例を示す正面図であり、要部を切欠して示している。
【図2】図1における(II)−(II)線断面図。
【図3】同開閉装置の巻取り軸構造の作用を示す模式図。
【図4】同開閉装置の巻取り軸構造の作用を示す模式図。
【図5】本発明に係わる開閉装置の巻取り軸構造の他例を示す正面図。
【図6】図4における(VI)−(VI)線断面図。
【図7】本発明に係わる開閉装置の巻取り軸構造の他例を示す正面図。
【図8】従来の開閉装置の巻取り軸構造の一例を示す模式図。
【符号の説明】
10:開閉体
11a:凹部
20:巻取り軸
30:移動補助手段
40:支持部材
41:枠部材
41b:案内部
41b1:規制部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a winding shaft structure of an opening / closing device such as a shutter device in which an opening / closing body that opens and closes is wound around a winding shaft.
[0002]
[Prior art]
Conventionally, this type of winding shaft structure includes, as shown in FIG. 8, for example, an opening / closing body 110 formed by connecting a plurality of slats 111, and a winding shaft 120 that winds and unwinds the opening / closing body 110. And a guide rail 130 that guides the opening / closing body 110 in the vertical opening / closing direction below the winding shaft 120 (for example, see FIG. 6 of Patent Document 1).
[0003]
According to the related art, as shown in FIG. 8A, the approximate center of the opening and closing direction of the opening and closing body of the slat 111 in contact with the winding shaft 120 substantially coincides with or is close to the horizontal center line of the winding shaft 120. 8B, and a state in which the end of the slat 111 in contact with the take-up shaft 120 in the opening / closing direction of the opening / closing body is substantially coincident with or close to the horizontal center line of the take-up shaft 120, as shown in FIG. In this case, the distance between the outer peripheral surface of the winding shaft 120 on the substantially horizontal center line of the winding shaft 120 and the outer surface of the suspended portion of the plurality of slats 111 is different. This distance is, for example, a dimension h1 in the state shown in FIG. 8A, a dimension h2 in the state shown in FIG. 8B, and h1 is smaller than h2.
Therefore, in the above-described conventional technology, when the opening / closing body 110 is wound up or unwound by the winding shaft 120, the opening / closing body 110 that opens and closes in the vertical direction has an opening / closing body having a width approximately equal to the difference between h1 and h2. In some cases, vibration in the thickness direction was generated.
In this case, since the vibration is also transmitted to the lower side of the opening / closing body 110, the opening / closing body 110 vibrates in a wavy manner in the vertical direction during the opening / closing operation.
Therefore, the opening / closing member 110 makes the widthwise end of the opening / closing member 110 abut and slide against the inner surface of the guide rail 130 while opening and closing in the vertical direction. Therefore, there is a possibility that the frictional resistance or the like due to the contact or sliding contact with the end portion of the opening / closing body 110 or the guide rail 130 may increase, or noise may be generated due to the wavy vibration.
In particular, when the opening and closing device shown in FIG. 8 is a type of opening and closing device that raises and lowers the lower end side of the opening and closing body with a hand or a drawer, a large opening and closing force is required due to the vibration. When the opening / closing member is strongly pulled out, the above-mentioned vibration tends to occur more.
[0004]
Further, in the conventional winding shaft structure of the opening and closing device, as in the invention described in Patent Document 2, the winding shaft is moved closer to or away from the upper extension line of the guide rail by using a swing link mechanism. There is a winding device which is supported in such a manner that the winding shaft is forcibly moved in the approaching / separating direction by a screw mechanism.
According to this conventional technique, when the opening / closing body is wound on the winding shaft, the winding shaft is moved in a direction away from the upper extension line of the guide rail by the screw mechanism in accordance with the winding operation. Then, when the opening / closing member is fed out from the winding shaft, the winding shaft is moved by the screw mechanism in a direction approaching the upper extension of the guide rail with the feeding operation.
Therefore, in this prior art, the opening / closing body opens and closes in the vertical direction along the upper extension line regardless of the size of the winding diameter of the opening / closing body wound on the winding shaft. Abutment and sliding contact between the end portion in the width direction and the inner surface of the guide rail can be reduced.
[0005]
However, in the latter conventional technique, as in the former conventional technique, the distance between the outer peripheral surface of the winding shaft and the outer surface of the slat changes on the substantially horizontal center line of the winding shaft. For this reason, there is a possibility that the above-mentioned waving vibration is generated in the vertical direction of the opening / closing body.
[0006]
[Patent Document 1]
JP-A-2-68099 (see FIG. 6)
[Patent Document 2]
JP 2000-145325 A
[0007]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and a problem to be solved is a winding of an opening / closing device capable of suppressing vibration in a thickness direction of an opening / closing body due to a winding / unwinding operation of a winding shaft. It is to provide a shaft structure.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, a first invention includes an opening / closing body having a recess extending in the width direction of the opening / closing body on at least one surface, and a winding shaft capable of winding or feeding out the opening / closing body. In a winding shaft structure of an opening / closing device in which the opening / closing body is wound or unwound by the winding shaft in a state facing the winding shaft, the winding shaft has a thickness of the opening / closing body in the opening / closing body. A winding shaft structure of the opening / closing device, which is supported so as to be freely reciprocated finely in the thickness direction of the opening / closing body by vibration in the vertical direction.
[0009]
Here, the winding shaft structure of the opening / closing device in the present invention means a winding shaft structure in the opening / closing device that winds or unwinds the opening / closing body that partitions or opens a space by the winding shaft. It includes a mode in which the body performs only the opening operation, a mode in which the opening and closing body performs only the closing operation, a mode in which the opening and closing body performs both the opening operation and the closing operation, and the like.
[0010]
The opening / closing body is an opening / closing body that is formed so that a concave portion formed on at least one surface over the width direction of the opening / closing body is directed to the winding shaft side while being wound around the winding shaft. Good.
The recess includes both a mode in which the bottom surface of the recess is closed and a mode in which the bottom surface of the recess is penetrated. That is, as a specific example of the mode in which the bottom surface of the concave portion is closed, an opening / closing body formed by connecting a plurality of slats or panels having a substantially concave longitudinal section is connected. In addition, as a specific example of the aspect in which the bottom surface of the concave portion is penetrated, there is an aspect in which a plurality of pipe members are continuously provided at predetermined intervals in the opening and closing direction.
The recess includes both a recess formed on the front side of the opening and closing body and a recess formed on the back side of the opening and closing body. For example, in the case where the opening / closing body has a mode in which a plurality of slats having a concave shape in a longitudinal section are connected, the concave portion may be a concave portion of each slat on the back side of the opening / closing body, or on the front side of the opening / closing body. It may be a concave portion formed between slats adjacent in the connecting direction. In the latter case, the opening / closing body is wound with its front surface side facing the winding shaft (this may be referred to as “outer winding” by those skilled in the art).
In addition, the opening / closing body may have the concave portion disposed at least in a portion wound around the winding shaft. For example, the opening and closing portion may partially include the slat or the longitudinal section in the portion wound around the winding shaft. An opening / closing body may be provided in which one or a plurality of substantially concave panels, the pipes, and the like are provided, and the other part is another member such as a sheet-like member.
[0011]
Note that the opening / closing body width direction is a direction substantially perpendicular to the opening / closing direction of the opening / closing body and means a direction other than the thickness direction of the opening / closing body. Same meaning.
Further, the opening / closing body thickness direction is a thickness direction of the opening / closing body extended from the winding shaft, and is substantially orthogonal to the opening / closing body width direction and substantially orthogonal to the opening / closing body opening / closing direction. It means the direction, and the similar expressions described below have the same meaning.
Further, the opening / closing direction of the opening / closing body refers to a direction in which the opening / closing body opens and closes, and the same expressions described below have the same meaning.
[0012]
Further, the winding shaft may have a structure that winds or unwinds the opening / closing body, and the winding shaft includes a shaft main body that is rotatably supported. A mode in which the opening / closing body is wound on the shaft body or the opening / closing body is extended from the shaft body, a shaft body supported so as not to rotate, and supported so as to rotate around the shaft body. And a rotating body having a substantially cylindrical shape and the like, wherein the opening / closing body is wound around the rotating body or the opening / closing body is extended from the rotating body.
In addition, the winding shaft may perform only one of the operation of winding the opening / closing member and the operation of extending the opening / closing member, or may perform both operations. Is also good.
Further, the phrase "the winding shaft is supported so as to freely reciprocate finely in the thickness direction of the opening / closing body by vibration of the opening / closing body in the thickness direction of the opening / closing body" means a driving source for the fine movement of the reciprocating movement. And the winding shaft may be freely reciprocated finely in the thickness direction of the opening / closing body by the vibration of the opening / closing body in the thickness direction of the opening / closing body.
[0013]
The reciprocating fine movement means that the winding shaft reciprocates in the opening / closing body thickness direction at a width approximately equal to or smaller than the width of vibration of the opening / closing body in the opening / closing body thickness direction. Means the movement when.
[0014]
As a preferred aspect of the above configuration, in the second aspect, the supporting member includes a support member that supports an end portion side of the winding shaft, and a movement assisting unit that reduces a movement resistance at the time of the reciprocating fine movement. A guide portion extending in the thickness direction of the opening / closing body, and being guided by the guide portion via the movement assisting means, to be supported so as to perform the reciprocating fine movement.
[0015]
Here, the movement assisting means is configured to reduce the movement resistance when the winding shaft makes the reciprocating fine movement, that is, when the winding shaft makes the reciprocating fine movement, the end side of the winding shaft is What is necessary is just to reduce the resistance such as friction generated between the guide member and the guide portion.
As a preferred specific example of the movement assisting means, the one member can be moved relative to the other member by rolling between one member and the other member, assuming that the movement resistance can be particularly reduced. Examples of the rolling member include a wheel and a roller. Further, as another example of the movement assisting means, a protrusion is provided on one member and the other member is slid in the longitudinal direction of the protrusion, so that friction between one member and the other member is increased. It is also possible to use technical means for reducing the resistance.
The movement assisting means may be mounted, for example, on the end side of the winding shaft so as to contact the guide portion, or may be mounted on the guide portion and contact the winding shaft. You may make it. As still another example, the movement assisting means may be mounted on both the end side of the winding shaft and the guide portion so that the two movement assisting means are in contact with each other. .
[0016]
Further, the support member is a member having a guide portion for finely reciprocating the winding shaft in the reciprocating manner, and is a member fixed to a member or a part on the skeleton side.
The guide portion of the support member is formed so as to support the end portion side of the winding shaft via the movement assisting member and guide the end portion in the thickness direction of the opening and closing member. What is necessary is just to comprise by the flat surface, edge, etc. which extend in a vertical direction.
Further, the length of the guide portion may be set to at least a length that allows the rewinding shaft to reciprocate finely in the thickness direction of the opening / closing body.
[0017]
Further, in the third invention, a plurality of the movement assisting means are attached to an end portion of the winding shaft so as to sandwich the guide portion from both sides in the opening and closing direction of the opening and closing body.
[0018]
That is, according to the third aspect, the plurality of movement assisting means are arranged so as to sandwich the guide portion from both sides in the opening / closing body opening / closing direction, and finely reciprocate in the opening / closing body thickness direction with respect to the guide portion. become.
Therefore, in the third invention, at least two or more of the movement assisting means are provided so as to sandwich the guide portion from both sides in the opening and closing direction of the opening and closing body.
[0019]
Furthermore, in the fourth invention, at least one of the movement assisting means on the both sides is at a position eccentric to the axis of the winding shaft, and It is characterized in that it is arranged at a position where it comes into contact with the take-out shaft in the feeding rotation direction.
[0020]
Here, the feeding rotation direction means a direction in which the winding shaft rotates the outer peripheral surface when the opening / closing body is fed.
[0021]
Further, in the fifth invention, the movement assisting means is attached to an end portion of the winding shaft, and the guide section is provided in a substantially parallel manner so as to sandwich the movement assisting means from both sides in the opening / closing body opening / closing direction. It is characterized by being arranged in places.
[0022]
That is, according to the fifth aspect, the two guide portions are disposed substantially in parallel at a predetermined interval in the opening / closing body opening / closing direction, and the movement assisting means is provided between the two guide portions. Is arranged.
[0023]
According to a sixth aspect of the present invention, the movement assisting means and the guide portion are formed so as to engage with each other in a substantially uneven shape in cross section.
[0024]
Here, "to engage in a substantially uneven shape in cross section" means that one of the movement assisting means and the guide portion has a concave engaging portion, and the other member has the engaging portion. Means that a protruded engaged portion capable of engaging with is formed. In the sixth aspect, the winding shaft is finely reciprocated along the guide portion while maintaining the engagement state between the engagement portion and the engaged portion.
[0025]
Further, in the seventh invention, a guide rail for guiding the opening / closing body in the opening / closing direction is provided, and the guide portion is substantially horizontal acting on the winding shaft when the opening / closing body is wound or unreeled. It is characterized in that the winding shaft is formed in a substantially horizontal shape such that the winding shaft can be moved in the thickness direction of the opening / closing body by a force in the direction.
[0026]
Here, the force in the substantially horizontal direction is, when the opening / closing body is wound around the winding shaft, a force that causes the winding shaft to move away from a winding shaft side extension of the guide rail, When the opening / closing body is unreeled from the winding shaft, it means both the force of the winding shaft approaching the winding shaft-side extended line and the force of the opening shaft.
Further, the "length that can move the winding shaft in the thickness direction of the opening / closing body" means that the length of the guide portion is separated from the winding shaft side extension line of the guide rail by the winding shaft. Direction or a direction in which the winding shaft approaches the winding shaft-side extended line, which means that the winding shaft is set to a length that can be moved substantially continuously. According to this configuration, the take-up shaft is moved by the substantially horizontal force acting on the take-up shaft when the open-close body is wound or unwound while the reciprocating fine movement is being performed. Will move in that direction.
[0027]
Further, according to the eighth invention, the support member is provided with a restricting portion that restricts movement of the winding shaft in the thickness direction of the opening and closing body by contacting the member on the winding shaft side. Features.
[0028]
Here, the member on the winding shaft side may be a member that moves integrally with the winding shaft, and specific examples thereof include the movement assisting member attached to the winding shaft and the winding assist member. A shaft main body constituting the take-up shaft, a bracket attached to the take-up shaft, and the like can be given.
The regulating portion is a member that regulates the amount of movement by contacting the moving winding shaft when the winding shaft moves in the thickness direction of the opening / closing body.
The restricting portion includes a mode in which the axis of the winding shaft is restricted from moving in a direction away from an extension of the guide rail on the winding axis side, and a mode in which the axis of the winding shaft is wound on the guide rail. There is a mode of restricting movement in the direction approaching the extension line on the take-up shaft side. Of these two modes, only one or both may be provided.
Further, as a specific example of the restricting portion, a rib provided on the support member so as to abut against the member on the winding shaft side when moving in the thickness direction of the opening / closing body, a protrusion, a bolt, a rivet, and others. And the like.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An example of the winding shaft structure of the opening / closing device according to the present embodiment is provided in an opening of a building / structure such as a house, a building, a warehouse, and a factory, and is disposed inside the building / structure to open and close the opening. Winding shaft structure in a so-called shutter device that separates or opens the space inside the building / structure, especially for a shutter device that raises and lowers the end side in the closing direction of the opening / closing body with a hand or a drawer. A description will be given as a suitable winding shaft structure.
[0030]
The opening / closing device 1 having this winding shaft structure is mounted on an opening / closing body 10 that can be opened and closed, a winding shaft 20 that winds and unwinds the opening / closing body 10, and both end surfaces of the winding shaft 20. Two movement assisting means 30, a support member 40 for supporting the winding shaft 20 via the movement assisting means 30, 30 at each of both ends thereof, and an opening / closing body 10 below the winding shaft 20; And a guide rail 50 for guiding each of both ends in the width direction of the opening and closing direction (up and down direction in FIGS. 2 to 4), and the winding shaft 20 is connected to the opening and closing body thickness direction of the opening and closing body 10 (FIG. By vibrating in the substantially horizontal direction (2 to 4), reciprocating fine movement is freely performed in the thickness direction of the opening and closing body.
[0031]
The opening / closing body 10 is formed by connecting a plurality of slats 11 so that the slats 11 can be bent between adjacent slats 11.
Each of the slats 11 is formed by bending a metal plate having a predetermined thickness, has a substantially concave shape in a vertical cross section including a flat portion and curled portions at upper and lower ends thereof, and has a width direction of the opening / closing body (a depth direction in FIGS. 2 to 4). ) Is formed in a substantially elongated rectangular shape in plan view.
The opening / closing body 10 having the above-described configuration is wound or unwound by the winding shaft 20 with the concave portion 11a on the inner surface side of each slat 11 facing the winding shaft 20 side.
[0032]
The take-up shaft 20 rotatably supports a substantially cylindrical drum 22 on the outer periphery of a shaft main body 21 that is non-rotatably supported by a support member 40 described later, and furthermore, a shaft between the shaft main body 21 and the drum 22. A coil spring 23 (see FIG. 1) is wound around the shaft main body 21 in FIG. The coil spring 23 has one end fixed to the shaft main body 21 and the other end fixed to the drum 22 so as to rotate the drum 22 in the winding direction (clockwise in FIG. 2) with respect to the shaft main body 21. I'm wearing
[0033]
According to the above configuration, when the opening / closing body 10 is closed, the opening / closing body 10 wound around the winding shaft 20 is pulled out with a hand or a pull-out tool, so that the drum 22 is rotated by the coil spring 23. Rotation in the opposite direction (counterclockwise according to FIG. 2) against the bias in the direction.
When the opening / closing body 10 is opened, the force for lifting the end of the opening / closing body 10 in the closing direction with a hand or a pull-out tool will rotate the drum 22 in the winding rotation direction by the bias of the coil spring 23. Assisted by the force.
[0034]
In addition, a support bracket 24 that supports movement assisting means 30, 30 described later is fixed to an end surface of the shaft main body 21 of the winding shaft 20.
The support bracket 24 is integrally provided with support portions 24b, 24b having a substantially L-shaped cross section at both ends of a fixing portion 24a having a substantially U-shaped cross section.
The fixing portion 24a is inserted into the end of the shaft main body 21, and is fixed to the shaft main body 21 using a fastening means such as a bolt and a nut, a rivet, a spacer, or the like.
Each of the support portions 24b supports the movement assisting means 30 on an end surface on the support member 40 side described later.
[0035]
Each movement assisting means 30 may be a rolling member that smoothly moves one member with respect to the other member by rolling between one member and the other member. According to a preferred example, the shaft portion 31 is fixedly penetrated to the support portion 24b of the support bracket 24, and the roller member 32 is rotatably supported between the shaft portion 31 via a bearing or the like. In addition, the outer peripheral surface of the roller member 32 is smoothly rolled along a support member 40 described later.
[0036]
Each of the movement assisting means 30 having the above-described configuration is arranged at a position eccentric with respect to the axis of the winding shaft 20 and at a position where it comes into contact with a guide portion 41b, which will be described later, in the feeding rotation direction of the winding shaft 20. And is attached to each support portion 24b of the support bracket 24.
[0037]
That is, according to the example illustrated in FIG. 2, the upper movement assisting unit 30 is located at a position eccentric to the left and obliquely upward with respect to the axis of the winding shaft 20, The take-up shaft 20 is disposed at a position where the take-up shaft 20 comes into contact with the feed rotation direction (counterclockwise in FIG. 2).
Further, according to the illustrated example, the lower movement assisting means 30 is located at a position eccentric diagonally downward and to the right with respect to the axis of the winding shaft 20, and is wound with respect to the guide portion 41 b immediately above. The take-up shaft 20 is disposed at a position where it comes into contact with the take-out rotation direction (counterclockwise in FIG. 2).
[0038]
According to the arrangement of the movement assisting means 30, even when the force in the feeding rotation direction is applied to the shaft main body 21 of the winding shaft 20 when the opening / closing body 10 is pulled out strongly, for example, the two movement assisting means 30 and 30 respectively oppose the guide portion 41b to oppose the force.
[0039]
Further, since the vertical movement assisting means 30, 30 are arranged so as to sandwich the guide portions 41b, 41b from both sides in the opening / closing body opening / closing direction (vertical direction in the illustrated example), the opening / closing body is temporarily attached to the winding shaft 20. Even if a force in the opening and closing direction acts, stable contact with the guide portions 41b, 41b is maintained.
[0040]
Further, the configuration of the support member 40 will be described in detail. The support member 40 is formed by joining two frame members 41, 41 having the same shape in the vertical direction so that the upper, lower, left, and right directions are opposite. ing.
[0041]
Each frame member 41 is formed in a substantially U-shaped vertical cross-section having two guide portions 41a and 41b substantially parallel to one end and the other end in the opening and closing direction of the opening and closing body.
[0042]
The guide portion 41a on the one end side is extended in a flat and horizontal state with a length capable of moving the winding shaft 20 substantially continuously in the thickness direction of the opening / closing body. The length of the outer diameter of the drum 22 is about half or slightly longer than about half.
[0043]
The guide portion 41b on the other end side is formed in a shape having a restricting portion 41b1 on one end side of the guide portion 41a in the thickness direction of the opening / closing body.
[0044]
The restricting portion 41b1 is a portion which is formed to be inclined so as to restrict the movement of the movement assisting means 30 by contacting the movement assisting means 30 when moving.
[0045]
Then, the two frame members 41, 41 having the above-described configuration join the guide portions 41b, 41b in a back-to-back manner, and are fastened to a frame-side member 60 such as a storage case by bolts and nuts or rivets. 70 fixed.
Therefore, the restricting portions 41b1 are disposed at both ends in the thickness direction of the opening / closing body to limit the moving distance of the movement assisting means 30, 30.
[0046]
The two movement assisting means 30, 30 are engaged with the support member 40 having the above configuration. That is, as shown in FIG. 2, the upper movement assisting means 30 is engaged in the upper frame member 41 of the support member 40, and the lower movement assisting means 30 is engaged with the lower frame member of the holding member 40. 41 are engaged.
[0047]
In this engaged state, the upper and lower guides 41a and 41b of each frame member 41 are positioned substantially parallel to each other vertically so as to sandwich the movement assisting means 30 at the center. The movement is regulated to prevent the movement assisting means 30 from falling off.
[0048]
Further, according to a preferred example of the present embodiment, in the engaged state, the dimension a between the side end surface of the movement assisting means 30 and the fastening means 70 on the skeleton side member 60 side is set to Is smaller than the dimension b between the same side end surface of the support member 40 and the end surface of the guide portion 41b of the support member 40, the winding shaft 20 moves in the axial direction, and the movement assisting means 30, It is prevented from falling off (see FIG. 1).
More specifically, even if the winding shaft 20 moves to the right in the axial direction in FIG. 1, the side end surfaces of the movement assisting means 30, 30 (not shown) on the right end side of the winding shaft 20 are changed. By contacting the fixing means 70 (not shown) on the right end side, the movement assisting means 30 on the left end side is prevented from slipping out of the support member 40 in the axial direction.
[0049]
Further, according to a preferred example of the present embodiment, since the support members 40 are provided with the restricting portions 41b1 and 41b1 as described above, the moving distance of the winding shaft 20 is limited to a minimum necessary distance. Will be. Therefore, the frame-side member 60 such as a storage case is downsized in the thickness direction of the opening / closing body.
[0050]
Next, the operation and effect of the opening and closing device 1 having the above configuration will be described in detail.
According to the opening / closing device 1, the slat 11 in contact with the winding shaft 20 has a substantially center in the opening / closing direction of the opening / closing body substantially coincident with or close to the horizontal center line of the winding shaft 20 (see FIG. 3A). ) And a state in which the end of the slat 11 in the opening and closing direction of the slat 11 in contact with the winding shaft 20 substantially coincides with or is close to the horizontal center line of the winding shaft 20 (see FIG. 3B). An outer peripheral surface of the take-up shaft 20 on the substantially horizontal center line of the take-up shaft 20 (or an outer peripheral surface of the open / close body 10 wound around the take-up shaft 20 and being a second layer from the outside); Of the slat 11 has a different distance from the outer surface of the suspended portion. This distance is, for example, the dimension H1 in the state shown in FIG. 3A, the dimension H2 in the state shown in FIG. 3B, and H1 is smaller than H2.
[0051]
Therefore, when the opening / closing body 10 is wound or unwound by the winding shaft 20, the opening / closing body 10 that opens and closes in the up-down direction is about to vibrate at a width approximately equal to the difference between H1 and H2. The device 1 causes the winding shaft 20 to reciprocate finely in the thickness direction of the opening / closing body by the component of the vibration in the thickness direction of the opening / closing body (horizontal direction in FIG. 3), so that the vibration is suppressed.
According to a preferred example of the present embodiment, the vibration suppression effect is improved by minimizing the movement resistance during the reciprocating fine movement by the movement assisting means 30.
[0052]
Further, as shown in FIG. 4A, when the opening / closing body 10 is wound around the winding shaft 20, the winding diameter of the opening / closing body 10 around the winding shaft 20 gradually increases, and the opening / closing body 10 is suspended. The inclined portion is in a state of being obliquely downward rightward between the upper end side of the guide rail 50.
[0053]
Then, the contact point P between the suspended opening / closing body 10 and the outer peripheral surface of the opening / closing body 10 wound on the winding shaft 20 has the weight of the opening / closing body 10 below the contact P and the winding shaft. A diagonally rightward downward force F1 is exerted by both the reaction force and the reaction force of pulling the opening / closing body 10 diagonally leftward and upward.
As shown in FIG. 4A, the force F1 is a force including a component of a rightward force Fr and a component of a downward force Fd.
[0054]
Accordingly, the winding shaft 20 moves rightward by the component of the rightward force Fr while slightly moving in the opening / closing body thickness direction as described above, and during the movement, the contact point P on the opening / closing body 10 is moved. The lower portion is maintained substantially linear along the guide rail 50.
[0055]
Further, as shown in FIG. 4B, when the opening / closing body 10 is fed out from the winding shaft 20, the winding diameter of the opening / closing body 10 around the winding shaft 20 gradually decreases, and the opening / closing body 10 is suspended. The inclined portion is in a state of being obliquely downward and leftward between the upper end side of the guide rail 50.
[0056]
Then, the contact point P between the suspended opening / closing body 10 and the outer peripheral surface of the opening / closing body 10 wound on the winding shaft 20 has the weight of the opening / closing body 10 below the contact P and the winding shaft. The obliquely downward leftward force F2 acts on both the reaction force of the force that pulls the opening and closing body 10 obliquely upward in the right direction.
The force F2 is a force including a component of the leftward force Fl and a component of the downward force Fd, as shown in FIG. 4B.
[0057]
Accordingly, the winding shaft 20 moves leftward by the component of the leftward force Fl while slightly moving in the opening / closing body thickness direction as described above, and during the movement, the contact point P on the opening / closing body 10 is moved. The lower portion is maintained substantially linear along the inner surface of the guide rail 50.
[0058]
4 (a) and 4 (b) show the suspended portion of the opening / closing body 10 at an extremely inclined angle in order to easily explain the above operation, but actually, the winding diameter Accordingly, the suspended portion of the opening / closing body 10 is maintained substantially in a straight line along the guide rail 50 during the movement.
[0059]
Further, in the opening / closing device 1 of the present embodiment, the moving distance of the winding shaft 20 is regulated by the regulating portions 41b1 and 41b1, so that the opening / closing member 10 is slightly before opening and slightly before the opening / closing member 10 closes. At this time, the movement of the winding shaft 20 stops.
Therefore, according to the opening / closing device 1, the opening / closing operation of the opening / closing body 10 except for the state slightly before opening and the state slightly before closing can be performed by regulating the moving distance of the winding shaft 20. By moving the winding shaft 20 in the thickness direction of the opening / closing body, contact and sliding contact between the width direction end of the opening / closing body 10 and the inner surface of the guide rail 50 are reduced.
[0060]
The slightly before opening is when the end of the opening / closing body 10 in the closing direction approaches a predetermined position during the opening operation, and the predetermined position is the position of the opening / closing body 10 wound around the winding shaft 20. It is preferable that the amount of protrusion of the outer peripheral portion toward the guide rail 50 (to the left in FIG. 4A) is set to an appropriate amount, and furthermore, it is suspended on the winding shaft 20 of the opening / closing body 10. It is preferable that the angle of the lowered portion is set appropriately.
That is, if the amount of protrusion is too large, there is a concern that the outer peripheral portion of the wound opening / closing body 10 may interfere with a storage case or the like that houses the opening / closing body 10 and the winding shaft 20. It is necessary to increase the dimensions of the case and the like toward the guide rail 50 (to the left in FIG. 4A). Therefore, the predetermined position where the end of the opening and closing body 10 in the closing direction approaches during the opening operation is set such that the amount of protrusion is an appropriate amount that does not interfere with the storage case or the like.
If the angle of the portion of the opening / closing body 10 suspended on the winding shaft 20 is too large, the rotational resistance of the winding shaft 20 may be too large. Therefore, the predetermined position is set to such an extent that the rotation resistance does not become too large depending on the angle of the part suspended from the winding shaft 20 of the opening / closing body 10.
In the opening / closing device 1 which is a preferred example of the present embodiment, the opening / closing body 10 is decelerated slightly before the opening of the opening / closing body 10 by the appropriate rotation resistance by the setting of the angle. Shock and noise when fully opened are reduced.
A preferred example of the predetermined position is a position within one third of the upper side of the guide rail 50.
[0061]
In addition, the "slightly before closing" is when the end of the opening / closing body 10 in the closing direction approaches a predetermined position during the closing operation. In this case, the predetermined position is set to the winding shaft 20 of the opening / closing body 10. It is preferable that the angle of the suspended portion is set appropriately.
That is, if the angle of the portion of the opening / closing body 10 suspended on the winding shaft 20 is too large, the rotational resistance of the winding shaft 20 may be too large. Therefore, the predetermined position is set to such an extent that the rotation resistance does not become too large depending on the angle of the part suspended from the winding shaft 20 of the opening / closing body 10.
In the opening / closing device 1 which is a preferred example of the present embodiment, the rotation is decelerated slightly before the closing of the opening / closing body 10 by the appropriate rotation resistance by setting the angle, whereby the opening / closing body 10 Shock and noise when closing is reduced.
In this case, a preferable example of the predetermined position is a position within one third of the lower side of the guide rail 50.
[0062]
Therefore, the distance between the restricting portions 41b1 and 41b1 is determined by taking into account the former predetermined position and the latter predetermined position described above, and the end of the opening / closing body 10 in the closing direction (the lower end in the figure) is the guide rail 50. The winding shaft 20 is set so as to move in the thickness direction of the opening / closing body when located within at least one third of the central side in the length direction.
[0063]
Therefore, in the opening / closing device 1 of the present embodiment, the opening / closing speed of the opening / closing body 10 slightly before the opening and slightly before the closing are relatively slow, and the vibration in the thickness direction of the opening / closing body 10 is relatively small. The contact and sliding contact between the widthwise end of the opening and closing body 10 and the inner surface of the guide rail 50 are relatively small.
[0064]
Next, another embodiment of the winding shaft structure of the opening / closing device according to the present invention will be described. In the other embodiments, components that are substantially the same as those of the opening / closing device 1 are given the same reference numerals, and overlapping detailed description will be omitted.
[0065]
The opening and closing device 2 shown in FIG. 5 has a configuration in which the movement assisting unit 30 is replaced by a movement assisting unit 81 and the support member 40 is replaced by a support member 82 in the opening and closing device 1 having the above configuration. .
[0066]
The movement assisting means 81 is a roller member rotatably fixed to the end side of the shaft main body 21 of the winding shaft 20 via a bracket, a bearing, and the like. ing.
On the outer peripheral surface of each movement assisting means 81, a concave portion 81a for engaging with a rail 82a1 of a support member 82 described later in a substantially uneven shape in cross section is formed over the entire circumference.
[0067]
The support member 82 fastens two guide members 82a, 82a having a substantially L-shaped cross section extending in the thickness direction of the opening / closing body to the surface of the body side member 60 so as to be vertically opposite to each other. It becomes.
On the inner surface of each guide member 82a, a rail 82a1 having a substantially projecting cross section which engages with the guide member 82a of the movement assisting means 81 in a substantially uneven shape in cross section is fixed in the thickness direction of the opening / closing body. It serves as a guide for guiding the auxiliary means 81 in the thickness direction of the opening / closing body.
[0068]
In addition, regulating portions 82b, 82b are disposed on both ends of the guide members 82a, 82a in the opening / closing body thickness direction.
Each regulating portion 82b is composed of a bolt penetrating both guide members 82a, and a nut screwed to the tip of the bolt. The restricting portion 82b restricts the movement of the winding shaft 20 in the thickness direction of the opening / closing body by bringing the bolt into contact with the outer peripheral surface of the shaft main body 21 of the winding shaft 20 (FIG. 6B). reference).
[0069]
According to the opening / closing device 2 having the above-described configuration, since the two guide members 82a, 82a are arranged substantially in parallel so as to sandwich the movement assisting means 81 from both sides in the opening / closing body opening / closing direction, the shaft main body 21 of the winding shaft 20 is formed. It is possible to prevent the support member 82 from dropping off. Moreover, by engaging the movement assisting means 81 and the respective guide members 82a in a concave and convex shape in cross section, the above-mentioned falling prevention is made more reliable.
In addition, since a plurality of the movement assisting means 81 are arranged between the two guide members 82a which are substantially parallel to each other, for example, when the opening / closing body 10 is pulled out strongly, the force in the rotation direction is fed to the winding shaft 20. Even if it acts, the plurality of movement assisting means 81 abut between the upper and lower guide members 82a, 82a to oppose the force. Therefore, the support structure of the winding shaft 20 can be made robust.
Further, similarly to the restricting portions 41b1 and 41b1 of the opening and closing device 1, the restricting portions 82b and 82b restrict the moving amount of the winding shaft 20, thereby forming a storage case or the like for storing the winding shaft structure. Downsizing in the thickness direction of the opening and closing body.
[0070]
The means for engaging the movement assisting means 81 with the support member 82 in an uneven shape in cross section is not limited to the above-described embodiment, and may be the opening and closing device 3 shown in FIG.
According to the opening and closing device 3, the movement assisting means 91 is a roller member having an outer peripheral surface formed in a substantially semicircular cross section, and a bracket, a bearing, or the like is provided on the end side of the shaft main body 21 of the winding shaft 20. , And are rotatably supported, and are arranged in a plurality in the width direction of the opening and closing body.
The support member 92 is formed to have a substantially U-shaped cross section, and engages the movement assisting means 91 with the inner surface of the upper piece and the inner surface of the lower piece in a substantially uneven shape in cross section, respectively. A guide portion 92 a having a substantially concave cross section for guiding the opening 91 in the thickness direction of the opening / closing body is formed, and is fixed to the body side member 60.
[0071]
The opening / closing device 3 is a preferred embodiment in which the structure is further simplified by forming the support member from an integral member. In the opening / closing device 3, the regulating portions are not shown, but the regulating portions 82 b, 82 b similar to the opening / closing device 2 may be inserted through the upper and lower guide portions 92 a, 92 a. In addition, the length of both guide portions 92a, 92a in the thickness direction of the opening / closing body is set so that the winding shaft 20 is moved until the opening / closing body 10 is fully opened and fully closed, so that no regulating portion is provided. Is also possible.
[0072]
5 and 7, the illustration is made clear by omitting the drum 22, the coil spring 23, and the opening / closing body 10 of the winding shaft 20, but these members are substantially the same as those of the opening / closing device 1. It is provided.
[0073]
【The invention's effect】
The present invention is configured as described above, and has the following functions and effects.
According to the first aspect of the present invention, when the opening and closing body is wound or unwound by the winding shaft, the opening and closing body tends to vibrate in the thickness direction due to contact between the concave portion of the opening and closing body and the outer peripheral surface of the winding shaft. However, since the take-up shaft slightly moves in the thickness direction of the opening and closing body due to the component of the vibration in the thickness direction of the opening and closing body, the vibration of the opening and closing body can be suppressed.
Therefore, it is possible to suppress the vibration in the thickness direction of the opening / closing body due to the winding / unwinding operation of the winding shaft, and further reduce the noise of the opening / closing body and the guide rail due to the vibration, and the opening / closing force of the opening / closing body. Can be reduced.
[0074]
Further, according to the second aspect, the movement assisting means reduces the movement resistance of the winding shaft, so that the fine movement of the winding shaft can easily follow the vibration in the thickness direction of the opening / closing body. Therefore, vibration in the thickness direction of the opening / closing body due to the winding / unwinding operation can be further reduced.
[0075]
Further, according to the third invention, since the plurality of movement assisting means on the end side of the winding shaft are arranged so as not to move in the opening / closing body opening / closing direction with respect to the guide portion, the moving assist means is temporarily opened / closed by the winding shaft. Even if a force in the body opening / closing direction acts, stable contact with the guide portion is maintained. Therefore, it is possible to prevent the end side of the winding shaft and the movement assisting means from dropping off from the guide portion.
[0076]
Further, according to the fourth invention, for example, when the opening / closing body is pulled out strongly, even if a force in the feeding rotation direction is applied to the winding shaft, the movement assisting means abuts on the guide portion. Oppose the power. Therefore, the support structure of the winding shaft can be made robust.
[0077]
Furthermore, according to the fifth invention, since the movement assisting means is sandwiched between the two substantially parallel guides arranged in the opening / closing body opening / closing direction, stable contact between the movement assisting means and the guide is achieved by a simple structure. In addition to being able to maintain, it is possible to prevent the end side of the winding shaft and the movement assisting means from dropping off from the guide portion due to vibration in the opening and closing direction of the opening and closing body.
[0078]
Further, according to the sixth aspect, the engagement having a substantially uneven shape in cross section can prevent the movement assisting means from falling off from the guide portion.
[0079]
Further, according to the seventh aspect, when the opening / closing body is wound, the axis of the winding shaft slightly moves in the thickness direction of the opening / closing body as the winding diameter of the wound opening / closing body increases. While moving, the guide rail moves in a direction away from the extension line on the winding shaft side. Also, when the opening / closing body is extended, the axis of the winding shaft is slightly moved in the thickness direction of the opening / closing body as the winding diameter of the wound opening / closing body becomes small, and the winding of the guide rail is performed. Move in the direction approaching the extension on the spindle side.
Therefore, with a simple structure, the portion of the opening / closing body closer to the take-up shaft than the guide rail can be maintained in a substantially straight line along the extension of the guide rail according to the size of the winding diameter. Further, the sliding contact between the front and back surfaces of the opening and closing body and the upper end side of the guide rail is reduced, so that the noise of the opening and closing body and the guide rail and the opening and closing force of the opening and closing body can be further reduced.
[0080]
Furthermore, according to the eighth invention, since the movement width of the take-up shaft in the thickness direction of the opening / closing member is regulated by the regulating portion, the maximum dimension of the take-up shaft structure in the thickness direction of the opening / closing member is minimized. Therefore, the maximum dimension in the thickness direction of the opening / closing body in a storage case or the like that stores the winding shaft structure can be reduced.
In addition, since the hanging portion of the opening / closing body can be set to an appropriate angle by the restricting portion, the opening / closing body 10 is opened slightly before and slightly before closing the opening / closing body 10 due to the rotational resistance of the winding shaft caused by the angle. Thus, it is possible to reduce the impact and noise when the opening / closing body is fully opened or closed.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a winding shaft structure of an opening / closing device according to the present invention, in which main parts are cut away.
FIG. 2 is a sectional view taken along line (II)-(II) in FIG.
FIG. 3 is a schematic view showing the operation of a winding shaft structure of the opening / closing device.
FIG. 4 is a schematic view showing an operation of a winding shaft structure of the opening / closing device.
FIG. 5 is a front view showing another example of the winding shaft structure of the opening / closing device according to the present invention.
FIG. 6 is a sectional view taken along the line (VI)-(VI) in FIG. 4;
FIG. 7 is a front view showing another example of the winding shaft structure of the opening / closing device according to the present invention.
FIG. 8 is a schematic diagram illustrating an example of a winding shaft structure of a conventional opening / closing device.
[Explanation of symbols]
10: Closing body
11a: recess
20: winding shaft
30: movement assisting means
40: Support member
41: Frame member
41b: Guide
41b1: Regulatory Department

Claims (8)

少なくとも一方の面に開閉体幅方向にわたる凹部を有する開閉体と、該開閉体を巻取り又は繰出し可能な巻取り軸とを備え、前記凹部を前記巻取り軸側へ向けた状態で、前記開閉体を前記巻取り軸により巻取り又は繰出すようにした開閉装置の巻取り軸構造において、
前記巻取り軸を、前記開閉体における開閉体厚さ方向の振動によって、同開閉体厚さ方向へ自在に往復微動するように支持したことを特徴とする開閉装置の巻取り軸構造。
An opening / closing body having a recess extending in the width direction of the opening / closing body on at least one surface, and a winding shaft capable of winding or unwinding the opening / closing body, wherein the opening / closing is performed with the recess facing the winding shaft. In a winding shaft structure of an opening / closing device configured to wind or unwind the body by the winding shaft,
A winding shaft structure for an opening / closing device, wherein the winding shaft is supported so as to be freely reciprocated finely in the opening / closing body thickness direction by vibration of the opening / closing body in the opening / closing body thickness direction.
上記巻取り軸の端部側を支持する支持部材と、上記往復微動の際の移動抵抗を軽減する移動補助手段とを備え、
前記支持部材は、上記開閉体厚さ方向へ延設された案内部を有し、前記移動補助手段を介して前記案内部に導かれることで、上記往復微動するように支持されていることを特徴とする請求項1記載の開閉装置の巻取り軸構造。
A support member that supports the end side of the winding shaft, and a movement assisting unit that reduces movement resistance during the reciprocating fine movement,
The support member has a guide portion extending in the thickness direction of the opening / closing body, and is guided by the guide portion via the movement assisting means, so that the support member is supported so as to perform the reciprocating fine movement. The winding shaft structure for a switchgear according to claim 1, wherein:
上記移動補助手段は、上記案内部を開閉体開閉方向の両側から挟むように、上記巻取り軸の端部側に複数取付けられていることを特徴とする請求項1又は2記載の開閉装置の巻取り軸構造。3. The opening / closing device according to claim 1, wherein a plurality of the movement assisting means are attached to an end of the winding shaft so as to sandwich the guide from both sides in the opening / closing direction of the opening / closing body. Winding shaft structure. 上記両側の上記移動補助手段の内、少なくとも一方側の移動補助手段は、上記巻取り軸の軸心に対して偏心した位置であって、上記案内部と上記巻取り軸の繰出し回転方向に当接する位置に、配置されていることを特徴とする請求項3記載の開閉装置の巻取り軸構造。At least one of the movement assisting means on the both sides is at a position eccentric with respect to the axis of the winding shaft, and is located in a direction in which the guide portion and the winding shaft are rotated in the feeding direction. The winding shaft structure for an opening / closing device according to claim 3, wherein the winding shaft structure is arranged at a contact position. 上記移動補助手段は、上記巻取り軸の端部側に取付けられ、上記案内部は、上記移動補助手段を開閉体開閉方向の両側から挟むようにして、略平行に二箇所配置されていることを特徴とする請求項2乃至4何れか1項記載の開閉装置の巻取り軸構造。The movement assisting means is attached to an end of the winding shaft, and the guides are arranged at two substantially parallel positions so as to sandwich the movement assisting means from both sides in the opening and closing direction of the opening and closing body. The winding shaft structure for a switchgear according to any one of claims 2 to 4, wherein 上記移動補助手段と上記案内部とは、断面略凹凸状に係合するように、それぞれ形成されていることを特徴とする請求項2乃至5何れか1項記載の開閉装置の巻取り軸構造。The winding shaft structure for an opening / closing device according to any one of claims 2 to 5, wherein the movement assisting means and the guide portion are formed so as to engage with each other in a substantially uneven shape in cross section. . 上記開閉体を開閉方向へ案内するガイドレールを備え、
上記案内部は、上記開閉体が巻取られたり繰出されたりする際に上記巻取り軸に作用する略水平方向の力によって、上記巻取り軸を上記開閉体厚さ方向へ移動可能な長さの略水平状に形成されていることを特微とする請求項2乃至6何れか1項記載の開閉装置の巻取り軸構造。
A guide rail that guides the opening and closing body in the opening and closing direction is provided,
The guide portion has a length capable of moving the winding shaft in the thickness direction of the opening / closing body by a substantially horizontal force acting on the winding shaft when the opening / closing body is wound or unwound. 7. The winding shaft structure for a switchgear according to claim 2, wherein the winding shaft structure is formed in a substantially horizontal shape.
上記支持部材に、上記巻取り軸側の部材に当接することで上記巻取り軸の開閉体厚さ方向への移動を規制する規制部を設けたことを特徴とする請求項7記載の開閉装置の巻取り軸構造。The opening / closing device according to claim 7, wherein the support member is provided with a regulating portion that regulates movement of the winding shaft in the thickness direction of the opening / closing member by contacting the member on the winding shaft side. Winding shaft structure.
JP2003126467A 2003-05-01 2003-05-01 Winding shaft structure of switchgear Expired - Fee Related JP4141313B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007182690A (en) * 2006-01-06 2007-07-19 Bunka Shutter Co Ltd Winding shaft supporting structure for opening/closing device
JP2007182692A (en) * 2006-01-06 2007-07-19 Bunka Shutter Co Ltd Device for sliding and supporting winding shaft of shutter equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007182690A (en) * 2006-01-06 2007-07-19 Bunka Shutter Co Ltd Winding shaft supporting structure for opening/closing device
JP2007182692A (en) * 2006-01-06 2007-07-19 Bunka Shutter Co Ltd Device for sliding and supporting winding shaft of shutter equipment

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