JP4189911B2 - Airtight structure of seat shutter - Google Patents

Airtight structure of seat shutter Download PDF

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Publication number
JP4189911B2
JP4189911B2 JP2003157562A JP2003157562A JP4189911B2 JP 4189911 B2 JP4189911 B2 JP 4189911B2 JP 2003157562 A JP2003157562 A JP 2003157562A JP 2003157562 A JP2003157562 A JP 2003157562A JP 4189911 B2 JP4189911 B2 JP 4189911B2
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seat
guide
sheet
closing member
posture
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JP2004360238A5 (en
JP2004360238A (en
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昭夫 小松
久雄 村上
好明 堀江
雄志 藤井
仁行 足立
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小松電機産業株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、工場や倉庫等建物の出入口や間仕切り部分等に設置されるシートシャッタの気密構造に関する。
【0002】
【従来の技術】
従来、建物の出入口や間仕切り部分の開口部等に設置されるシートシャッタは、可撓性を有するシャッタ用シートをシートドラムに巻き取り繰り出し可能に設け、シートの両側に設けたガイド片を左右のガイド部材(支柱)に沿わせて昇降(進退作動)させることによって開閉を行う。またガイド片は支柱内に形成されたガイドレール内に移動自在に収容し、シートを挿入して移動させるガイドレールのシート路(溝)をできるだけ小巾に形成することにより、支柱の内側と外側の通風空間を遮蔽状となし、シートと支柱の前後方向の気密を保持する構成にしている。(例えば、参考文献1参照。)
【0003】
そして、このシートシャッタは、シートが耐風圧以上の風圧や人や通過体等の接当により前後方向に強く押動され許容値を越える負荷を受けた場合に、ガイド片が横方向に押動しガイドレールのシート路を拡開させて抜け出すことにより、押動されたシートの局部又は全体をガイド部材から外して、接当による負荷を逃がす構成になっている。
【0004】
【特許文献1】
特開2001−207756公報(第3頁、第3図)
【0005】
【発明が解決しようとする課題】
上記公報で示されるような構成のシートシャッタは、シートの両側を上下移動可能に支持するガイドレールのシート路を小巾に形成することにより、シートとシート路で形成される間隙(通風空間)を小さくし気密を保持する構造にしているので、シートが強い風を受けた場合にシートとシート路の小間隙からガイドレール内に入り、該ガイドレール内で回り込んでシートの後側に入ることになる。また小巾に形成されたシート路は、シートが開閉作動するとき移動するシートの側部と強く摺接するので、シート開閉時に大きな作動抵抗を伴うと共に、シートの局部的な損耗を生じ易い等の欠点がある。
【0006】
さらにシート路とシートの接触抵抗を少なくし気密構造にするためには、支柱の構造が複雑になると共に加工精度を要しコスト高になる等の問題がある。
そして、シートが風等によって前後方向に強く押動されて外れるとき、ガイド片はシート路を無理に押し広げて抜け出るので、ガイドレールとガイド片の接触面を損傷し易い欠点があり、また外れたシートを元の繰出待機姿勢に復帰させるとき、最下部のガイド片をガイド部材のシート路内に無理に押し込むための煩雑な作業を要する等の問題がある。
【0007】
【課題を解決するための手段】
上記従来の問題点を解消するための本発明によるシートシャッタの気密構造は、第1に、可撓性を有するシート2の両側に沿って設けた抜け止め用のガイド片10を、左右のガイド部材3に形成したシート路11内に沿って案内移動し開閉作動させるシートシャッタ1において、前記シート路11に沿ってシート2の表面に接離自在に支持した閉鎖部材15を設け、該閉鎖部材15を駆動部55によりシート2を押接する閉鎖姿勢と、シート2から離間せしめてガイド部材3を案内移動させる案内姿勢とに切り換え可能に構成し、ガイド部材3に設けたシートガイド面20と閉鎖部材15の間でシート路11を形成し、案内姿勢から閉鎖姿勢に切り換えられた閉鎖部材15により、シートガイド面20の内端側のコーナー部21との間でシート2を押接することを特徴としている。
【0008】
第2に、駆動部55と閉鎖部材15との間に、駆動部55の駆動力を所定の伝達力で閉鎖部材15側に伝動する融通作動機構56を介設したことを特徴としている。
【0009】
に、ガイド部材3のシートガイド面20と閉鎖部材15の内面で、ガイド片10の抜け止め規制をして案内すると共に、閉鎖部材15をガイド片10による許容値以上の押動によって開放姿勢に切り換え可能に構成したことを特徴としている。
【0010】
に、閉鎖部材15をシートガイド面20に対し遠近調節させる調節機構57によって、案内姿勢におけるシート路11の巾を調節可能に構成したことを特徴としている。
【0011】
に、閉鎖部材15をガイド部材3内に設けた支持軸59に揺動可能に支持すると共に、トルクリッミッタ機構を備えた融通作動機構56の作動片80によって閉鎖部材15の他側を押動し、閉鎖部材15を支持軸59を支点に案内姿勢から閉鎖姿勢に切り換え可能に構成したことを特徴としている。
【0012】
【発明の実施の形態】
本発明の一実施形態を図面に基づいて説明する。図1,図2で示す符号1は、建物の出入口に設置されるシートシャッタである。このシートシャッタ1のフレームは、シャッタ用シートとしてのシート2の左右を支持し上下方向の移動を案内するガイド部材としての支柱(サイドフレーム)3と、左右の支柱3の上部に設置したシートケース4と、該シートケース4の内部にシート2を進退作動する開閉機構としての繰出装置5を収容した構成となっている。
【0013】
この実施形態の繰出装置5は、シート2を巻き取り繰り出しする進退作動方式のシートドラムとしている。またシートドラム5に巻き付けられるシート2は、左右の支柱3によって縦方向の両側辺を移動自在に支持され、シートドラム5の正逆回転によって昇降動作し出入口の開閉を行う。
またシートケース4は、建物の出入口の上部両側に取付固定されるケース枠4aの上部に載置した状態で取付支持される。このケース枠4aは左右の支持枠4bの前後を前カバー4cと後カバー4dで接続し、前カバー4cの後端と後カバー4dの間にシート2を通過させる通過間隙を形成している。
【0014】
以下シートシャッタ1の各部の構成について説明する。先ず図1で示すようにシートケース4は、下部面を開放した角筒状のカバー枠6の両側に端板6a,6aを着脱自在に嵌め込み固定し、両者間に中空円筒状のシートドラム5を軸支している。右方の端板6aは、円柱状の駆動モータ7をシートドラム5内に挿入した状態で取付ネジによって固着している。またモータ軸に設けた取付板8の外周を巻取ドラム5の内面と連結している。
【0015】
左方の端板6aは、シートドラム5の左端部を連結する取付板8aの支軸8bを回転可能に設けている。この構成により駆動モータ7が正逆回転すると、シートドラム5は巻き付けたシート2の繰り出し下降と巻き上げ上昇を行い、出入口の開閉動作をする。
尚、駆動モータ7の回転作動は従来のものと同様に、図示しない操作スイッチによる手動操作指令、並びに通過体を検知する検知部に基づく検知指令等によって制御盤を介して行なわれる。
【0016】
上記シート2は合成樹脂材製で可撓性等を有する長方形状の幕体からなり、上端(基部側)をシートドラム5の周面に軸芯方向(横方向)に取付固定され、シート本体2aの両側縁に耐摩耗性を有する別部材からなる帯状の縁部シート2bが貼着され、この縁部シート2bに後述する形状のガイド片10を所定の間隔を有して複数突設している。
このガイド片10は支柱3に形成されるシート路11を介し支柱3内に移動自在に挿入され、上下方向にスライド移動するとき、シート2の両側の抜け止め移動をスムースに行なうように案内する。
【0017】
この際縁部シート2bは該縁部シート2bの外縁より内側に舌片状となる帯代Lを有してガイド片10を設けることにより、縁部シート2bの外縁にガイド片10を設けない自由端となる縁帯部2cを形成している。
この構成により例えば縁部シート2bにガイド片10を高周波ウェルダー溶着等の接合手段によって突設加工する際に、縁帯部2cの内部応力によってシート素材の変形を抑制することができる。また後述するように支柱3から外れたシート2を巻き上げて支柱3に導入復帰させるとき、縁帯部2cを支柱3に摺接せしめガイド片10と支柱3との直接的な接当を防止する。さらに、縁帯部2cの自由端は支柱3内で奥側の壁面に対し摺接或いは近接させて設けることもでき、この場合には縁帯部2cと壁面との隙間を少なくしこの部の機密性を向上させることができる。尚、図示例のような支柱3では、該支柱3内に図3の点線で示すような補助壁3aを設け縁帯部2cの端部に近接せしめた構成にしてもよい。
【0018】
またシート2は左右の支柱3間でその下端に、シート2が最下降した閉じ状態において、地面或いは床面等(以下床面と言う)に気密性を有して接地する接地部12を設けている。この接地部12にはシート2を下方に向けて重力で付勢するウェイト部と、シート2が下降した際に通過体や障害物等(接当物)との接当を検知する接当センサ機構13を備えている。
そして、シート2が下降し接地部12が接当物に接触し、接当センサ機構13が接当物との所定値以上の接触圧を検知したとき、検知信号を図示しないアンテナ(受信機)を介し制御盤に伝え、該制御盤が駆動モータ7に逆転指令を出し、これによりシートドラム5がシート2を巻き取り上昇(退動)させる構成となっている。
【0019】
さらに、このシートシャッタ1は、シート2が下降接地した際に、シート2の前後即ち支柱3の外側と内側の通風間隔での風の吹き抜けを防止し、建物内への外気の侵入及び内気の外部への漏出を阻止する気密構造を備えている。この実施形態における気密構造は、シートケース4側に設けた上部閉鎖部材14,14と、支柱3に設けた側部閉鎖部材15によって構成される。
これによりシートシャッタ1は、接地部12の接地状態において上部閉鎖部材14と側部の閉鎖部材15によって、シート2の前後方向の通気を遮断し気密性の向上を図ることができる。
【0020】
またシートシャッタ1は車等の通過体がシート2に衝突した場合に、シート2が前後方向に強く押動されることに伴い、ガイド片10をシート路11から引き抜き離脱させることにより、シート2及び関連構成部材の破損を防止する構成となっている。
そして、支柱3から外れた状態にあるシート2の復帰作動を行うシート復帰構造を、支柱3とシートケース4との間に設け、シート2を単に上昇作動させるだけで元の繰り出し待機姿勢に自動的に復帰させる構成を備えている。
【0021】
以下各部の詳細な構成について説明する。先ず支柱3は図3で示されるように、分割形成された前後一対の支柱フレーム16,17を組み合わせ取付ネジ18によって接合した状態で、方形状断面となる周壁を形成し、且つ周壁の両端面の間にシート2を移動させるフレームシート路19を縦方向の溝状となるように開口形成し、該フレームシート路19内に後述する構成からなるシート路11を設けている。
即ち、前側の支柱フレーム16は周壁から内側に折り曲げた面で、フレームシート路19の前側(図面下側)をなすシートガイド面20を形成し、このシートガイド面20は内側端部にコーナー部21を形成して前側に屈曲せしめ、ガイド片10の抜け止め案内を行なうガイド片規制面22を形成している。(図4,図5)
【0022】
後側の支柱フレーム17は、周壁から内側に屈曲形成した面でフレームシート路19の後側のシートガイド面23を形成し、該シートガイド面23は前記シートガイド面20より短くし、その端部側に閉鎖部材15を近接状態で配置することにより、閉鎖部材15の後述するシール部61をシートガイド面20及びコーナー部21に対向する位置に設けている。
【0023】
この閉鎖部材15はシートガイド面20に対向せしめ、後述する位置決め手段によって、シート2を開閉移動させる際の案内姿勢に支持され、閉鎖部材15とシートガイド面20との間にシート路11を形成する。このシート路11は、前記フレームシート路19より巾狭で、且つガイド片10の厚さより巾狭となし、シート路11内でシート2の前後方向の揺れ移動を規制し上下方向の移動を自由にすると共に、シートガイド面23とシール部61の内面によってガイド片10の抜け止めを規制した案内移動を可能とする。
【0024】
これにより左右の支柱3,3のシート路11,11内にシート2の両側とガイド片10を挿入した状態で、シート2を横方向の移動を規制して弛みを防止した案内移動を行う。
また上記案内姿勢において閉鎖部材15は、シート2が風又は接当物によって前後方向に強く押動され許容値を越える負荷を受けた場合に、ガイド片10の引抜き方向(横方向)の押動により、閉鎖部材15をシート路11を拡開させる方向に退避作動せしめてガイド片10の規制を解除し、シート2の側部を支柱3から抜け出させ過負荷を受けた部位を外すことができる。
【0025】
一方、支柱フレーム17の周壁の他側面は前側に向けて屈曲形成され、支柱フレーム16の前壁をなす中途部で取付ネジ18によって接合された仕切壁25を形成し、この仕切壁25によって支柱3の内部にシート移動室26と調整室27を左右に遮断した状態で区画形成する。
また前後のシートガイド面20とシートガイド面23の上端部は拡開状となる斜面を形成し、フレームシート路19の上部に上向き漏斗状になる案内面を設け、シート2が最上昇した位置(図6)の下降待機姿勢(繰出待機姿勢)から下降するとき、シート2とガイド片10を上記案内面によって支柱3内へスムーズに導入する。
【0026】
そして、上記のように構成された支柱3の上部には、支柱3から外れたシート2がシートドラム5によって巻き上げられるとき、該シート2を繰出待機姿勢に修正復帰させるシート復帰構造を設けている。図2,図5で示すようにシート復帰構造は、シートドラム5の繰出し側に近接させて設けたシートガイド30と、支柱3の上部との間に導入間隙31を形成し、該導入間隙31から外れたシート2を巻き上げによって導入し、左右のシートガイド30内を通過させて元の繰出待機姿勢に修正し復帰させる。
【0027】
前記シートガイド30は、図5〜図7で示すように前後一対の案内部32,33によってシート2を前後方向に挟持した態様で、支柱3のガイド部11内に向けて案内する案内路35を、シートドラム5の繰出し側で下向きの接線方向となるように構成している。
この案内部32,33はシートケース4側に取付固定される平面視で箱型ケース状の案内枠36の内部に支持され、該案内枠36内に案内路35に通じガイド片10を移動させるガイド片通路37を形成している。
【0028】
また図示例の案内部32,33は正面視でブロック状の山形状をなす頂部にガイドローラ39を設け、その上下にガイド片10をガイド片通路37側に誘導する案内面40をそれぞれ形成している。また案内部32,33の対向する平坦面には図示しない小球状のガイドボールを設け、シート2の表面を滑らかに案内するようにしている。
一方、案内枠36のシート2側の側面にはシート2の最上昇位置を位置決め規制する規制部材(ストッパ受け)41,41を取付固定している。この規制部材41,41は両者の対向面で縁部シート2bを通過させる通過間隙を形成し、また左右のシートガイド30に設けた規制部材41,41の下面で、接地部12の両側に設けた係止片(ストッパ)42をそれぞれ接当させシート2のそれ以上の上昇移動を規制し、この規制負荷によって駆動モータ7が停止する。
【0029】
次に図1,図5を参照しシート2の接地部構造について説明する。この接地部12は、シート2の下端に中空筒状の袋部2dを形成し、袋部2d内にシート下端の通直性を維持させると共にウェイト部を構成する角筒状の芯材43を収容している。また接地部12内にはシート2の下部及び側部が接当物に接当した場合に、この接当を検知する接当センサ機構13を設置している。そして、これらの外側から可撓性を有する接地カバー44で覆い、袋部2dと接当センサ機構13等の保護及び接地した際の床面との気密性の向上を図るようにしている。
【0030】
また芯材43は両端内に前後一対の係止片42,42に形成した取付部45を挿入し取付ネジによって着脱可能に取付固定している。そして、係止片42,42の内側面でシート2の一部即ち縁部シート2bを前後から密着状に挟持した状態で、複数の取付ネジ46によって共締め固定している。これにより芯材43を係止片42を介しシート2の剛性を利用し袋部2d内に位置決め固定し横方向の移動や回転を防止すると共に、係止片42をシート2に対し安定よく取付支持している。また係止片42が規制部材41に接当したときシート2の最上昇位置の位置決めを行なうと共に、この状態で駆動モータ7を所定時間だけ巻き取り方向に回転させると、シート2の巻き締めを行なうことができ、巻き取り径の修正や巻き取り姿勢の修正等も簡単に行うことができる。
【0031】
次に図3,図4,図6を参照しガイド片10について説明する。ガイド片10はシート2の両側縁に沿って所定の間隔を有して複数突設される。このガイド片10は、正面視において進退方向(シート2の移動方向)に長い方形状又は楕円形状とし、側面視で半円弧状又は三角形状の山形突起となし、進退方向に山形の裾野をなす下り斜面のガイド斜面を山形の頂部ガイド面から略対称形状に形成している。また平断面視において頂部ガイド面の内側にシート2と略直交状に起立せしめた内側ガイド面50と、頂部ガイド面の中途部から他側に向けて下向き斜面になる外側ガイド斜面51を形成している。この構成によりシート2の表面にプラスチック材によって突設したガイド片10は、斜面端に至る程徐々に肉薄となり可撓性を有する。
【0032】
これによりシート2がシートドラム5で巻き取り繰り出しされたり、図2,図5の点線で示すように、シート外れが修正される場合のように一側に大きく撓むとき、ガイド片10の斜面端は自身が有する可撓性によって、上記撓み方向に追随し弾力的に撓むことができる。従って、従来のもののように駒型ブロック状の硬いガイド片とシートの接合端で両者の剥離を生じたりすることなく、また屈曲の繰り返しに伴う応力集中と疲労による早期の亀裂や損耗を抑制できる。
一方、側面視で山形をなす内側ガイド面50は、剛性を有した滑動面でガイド片規制面22と閉鎖部材15に摺接案内されるので、シート2の両側の抜け止めを防止した移動をスムース行うことができる。
【0033】
次に、図1,図2を参照しシートケース4に設置される上部の気密構造について説明する。この上部の気密構造は、上部閉鎖部材14,14をプラスチック材又はゴム材によって形成された可撓性を有する板状体となし、左右のシートガイド30,30の前後間に跨がる長さに形成している。
一方シートケース4は、その下部において前後の横板フレーム52,53を一体的に横設している。そして、横板フレーム52,53に前後の上部閉鎖部材14,14の基部をそれぞれ取付固定し、その自由端となる先端部をシート2の前後表面に摺接可能に押接している。これによりシートケース4はシート2を昇降通過せしめる下側の通風空間を機密性を有し遮蔽することができ、またシート2の昇降移動を妨げない。
【0034】
次に、図3,図4,図8において側部の気密構造について説明する。この側部の気密構造は、支柱3に沿ってシート2をシート路11の案内姿勢から、図4で示すようにシート2を押接してシート路11を閉鎖する閉鎖部材15と、シート2が下降接地した閉じ状態において、閉鎖部材15を案内姿勢から閉鎖姿勢に切換作動せしめる駆動部55と、閉鎖部材15と駆動部55との間に設置され、閉鎖姿勢にある閉鎖部材15を所定値以上の外力によって融通作動することができる融通作動機構56と、閉鎖部材15の案内姿勢を位置決め調節してシート路11の巾を設定する調節機構57とから構成している。
【0035】
図3で示すように閉鎖部材15は、仕切壁25の略中央部に沿って設けた支持軸59を支点に揺動回動可能に支持される閉鎖板60と、フレームシート路19を横断する方向に折り曲げた閉鎖板60の先端部に取付固定したシール部61とからなる。このシール部61は可撓性を有する断面U字状の帯状シール部材としているが、閉鎖板60の先端部でシート2を直接的に押接することもできる。
図示例の支持軸59は、閉鎖部材15の長手方向の複数箇所を仕切壁25に対して取付支持する蝶番部の軸を示しており、この支持軸59に嵌挿したスプリング62によって、閉鎖板60を前記閉鎖姿勢から案内姿勢及びシート路11を大きく開放する開放姿勢(退避回動)方向に付勢している。そして、閉鎖板60の基部には、調節機構57の調節片63に形成した台形状の斜面に接当せしめる接当片65を屈曲形成している。
【0036】
調節機構57は台形状の調節片63の底面に脚部63aを突設し、該脚部63aを仕切壁25に穿設した長孔66内に嵌挿し、脚部63aに形成したネジ孔に調節ネジ67を螺挿している。この調節ネジ67は仕切壁25の裏側に取付固定したコ字状のブラケット69の通孔に遊嵌させ、その頭部を支柱フレーム16に穿設した孔70に臨ませている。これによりドライバーを孔70から差し込んで調節ネジ67を回動操作することができる。尚、孔70の大きさは調節ネジ67の頭部より小径としてその抜止めを行なうと共に、調節ネジ67の頭部を介装する支柱フレーム16の内面とブラケット69との間隔は、調節ネジ67の回動時に頭部を殆ど移動させることのない隙間にしている。
またブラケット69と脚部63aの間には緩み止め用の圧縮スプリング71を介装している。
【0037】
この構成により調節ネジ67を回動すると、調節片63は圧縮スプリング71に抗して長孔66内を移動し接当片65に近接し、この位置で接当片65をスプリング62の付勢力に抗して支持し、シール部61の先端をシートガイド面20に接近させシート路11の間隔を狭めることができる。また調節ネジ67を逆転すると、調節片63を離間方向に移動せしめシール部61をシートガイド面20から遠ざけ、シート路11を拡開した位置に位置決めすることができる。
【0038】
またアッシー状に構成した調節機構57は、支柱方向に所定の間隔有して複数設置され、長い閉鎖部材15の全長を均等に位置決め支持している。
従って、閉鎖部材15を調節機構57によってシートガイド面20に対し遠近調節し、シート路11の巾を調節可能に構成したことにより、シート路11は各構成部品の製作誤差や組み付け誤差に対応し簡単に設定できると共に、ガイド片10の形状や大きさ等に対応しシート2の外れ方向の許容値を設定し、且つ閉鎖部材15の案内姿勢におけるシート2のスムースな移動を可能にする。
【0039】
次に、図3,図8,図9,図10を参照し閉鎖部材15の駆動部55及び融通作動機構56について説明する。融通作動機構56を駆動する駆動部55は、後述する態様で制御回転される開閉駆動モータ72と、開閉駆動モータ72に接続されて減速回転出力する減速機73とからなり、取付ブラケット75を介して仕切壁25に着脱可能に取付固定される。
減速機73はその出力軸76に融通作動機構56の駆動体77を取付固定し、作動体(従動体)78を該駆動体77から突設したボス部に遊嵌し軸心方向の位置決めをして取付支持している。上記作動体78はその他端に継ぎ手部79を介し、後述する他の作動片80を複数設けた作動杆90を連結している。
【0040】
そして、駆動体77及び作動体78は互いに対向する円板面で軸心を中心とする同一円周に、在来手段からなるトルクリッミッタ機構を構成し、駆動体77から作動体78へ回転動力を伝動させる構成にしている。即ち、駆動体77の円周には90度の位相を異ならせた直径方向で、対をなすクラッチ用のボール91をスプリング93によって付勢支持している。一方作動体78の円周には上記ボール91を係脱可能に係合させる円錐凹穴状のボール穴92を近接させて複数穿設している。
【0041】
この際ボール穴92が周方向で穿設される穴位置は、直径方向で対になるボール91,91がボール穴92,92に係合したとき、他方で対になるボール91,91がそれぞれ相隣るボール穴92の間の平坦面に乗り上げる状態となるように位置させている。これにより融通作動機構56は対になる2個のボール91で伝動し、駆動体77と作動体78に相対的なズレが生ずると、他方で対になるボール91,91がスプリング93の付勢力によって次位のボール穴92,92に速やかに係合し、所定の伝達力で伝動せしめることになる。
【0042】
図示例の作動体78は、その外周に滑らかなカム状突起面を形成し、前記作動杆90に設けたものと同様な作動片80を構成している。そして、各作動片80は開閉駆動モータ72の正転に伴い案内姿勢にある閉鎖部材15の閉鎖板60の背面をカム状突起面で滑らかに押接し、閉鎖部材15を図3の点線及び図4の実線で示す閉鎖姿勢に切り換えることができる。また開閉駆動モータ72の逆転に伴い作動片80は後退回動し、閉鎖部材15の押接を解除して支柱フレーム17の内側壁に接当するまで退避作動する。これに伴いスプリング62の付勢力によって閉鎖部材15は、接当片65が調節片63に接当する位置まで復帰し、元の巾のシート路11を形成した案内姿勢にされる。
【0043】
この際、トルクリッミッタ機構を介して閉鎖部材15の切り換え作動を行なう融通作動機構56は、作動片80が閉鎖部材15を閉鎖姿勢にした状態、及び作動片80が支柱フレーム17に接当した状態で、開閉駆動モータ72が同方向にそれ以上に回転したとしても、ボール91とボール穴92の設定値以上の負荷が掛かったときトルクリッミッタ機構の働きによって、作動片80に対する伝動を解除するので、開閉駆動モータ72並びに各構成部材に過負荷を与えることなく故障等のトラブルを防止することができる。
【0044】
従って、開閉駆動モータ72の回転制御は、例えばシートドラム5の駆動モータ7が正転しシート2の閉じ作動が完了されたことを検知して、開閉駆動モータ72を作動せしめると共に、タイマー設定によって開閉駆動モータ72を正転させることで閉鎖部材15を閉鎖姿勢に切り換え、次いで駆動モータ7が逆転作動されると同時に開閉駆動モータ72を逆転し、且つタイマー設定により回転停止させて、閉鎖部材15を案内姿勢に確実に切り換えることができる等、閉鎖部材15の姿勢切り換えを簡単な回転制御手段によって行うことができる。
【0045】
以上のように構成されたシートシャッタ1は、シートドラム5が繰出待機姿勢から、駆動モータ7の回転によってシート2を繰り出して進動させると、シート2の両側辺がシートガイド30の案内路35,ガイド片通路37を移動し導入間隙31を介し支柱3に挿入される。次いでシート2はガイド片10と共にガイド部11内を移動し、接地部12とウェイト部の重量が付勢されて下降し、接地部12が接地した閉じ状態において停止する。
このときシートシャッタ1は、シート2の両側が支柱3に支持された状態で、上部閉鎖部材14,14をシート2の上方を気密にしていること、及びシート2の両側を閉鎖部材15によって側部を気密にしていること、並びに接地部12が床面に接地することによって、シート2の前後方向の通気を遮断しシートシャッタ1の気密性を保持することができる。
【0046】
このときガイド部材3のシートガイド面20と閉鎖部材15で形成するシート路11で案内されるシート2は、シートガイド面20の内端側のコーナー部21で支持した状態で、閉鎖部材15の先端がコーナー部21の内側寄りを押接した閉鎖姿勢とされ、コーナー部21と閉鎖部材15の先端で挟持されたシート2のガイド片10側はコーナー部21に沿って屈曲され、シート2の表面に皺や弛みがあっても伸ばされることになり、屈曲されたシート2の表面とコーナー部21の機密性を高めることができ、またシート2の両側の張り支持をしかっりと固定的に行うことができる。
【0047】
そして、シート2が接当物と接当したり強風によって前後方向に強く押動され許容値を越える負荷を受けた場合に、ガイド片10の横方向の許容値以上の押動によって、閉鎖部材15を支持軸59を支点に該閉鎖部材15を回動並びに撓ませて退避作動し、シート路11を拡開した開放姿勢にするから、ガイド部11によるシート2の横方向の支持を解除して、押動されたシート2の局部又は全体を支柱3から外し、押動による負荷を逃がすことができる。
この後、図2の点線で示すように支柱3から外れた状態にあるシート部分は、前記シート復帰構造によってシート2を単に上昇作動させるだけの簡単な操作によって、導入間隙31から導入し左右のシートガイド30内を通過させて元の繰出待機姿勢に自動的に修正復帰させるので、シートシャッタ1を長時間休止させることなく連続的な使用を可能にすることができる。
【0048】
また支柱3のシート路11に沿って設けた閉鎖部材15は、シート2の表面を接離自在に押接するように支持され、駆動部55から融通作動機構56のトルクリッミッタ機構を備えた作動片80によって、所定の伝達力で押接方向に作動されるので、閉鎖部材15がシート2から離間した案内姿勢からシート2を押接した閉鎖姿勢に切り換えた状態で、開閉駆動モータ72が暫時回転されても該開閉駆動モータ72及び関連部材に無理をさせることがない。
また閉鎖姿勢に切り換えられた閉鎖部材15は、その閉鎖姿勢を開閉駆動モータ72の停止状態においても作動片80によって維持されると共に、閉鎖部材15がガイド片10の押動によって開放姿勢になるとき、作動片80は所定値以上の閉鎖部材15の押動によって退避作動するから、開閉駆動モータ72を無理に逆転させることがない。
【0049】
尚、図示例のシートシャッタ1は、シート2を進退作動させる繰出装置5を、シート2を巻き取り収納する筒状のシートドラムにしたが、この方式に限定することなく、例えばシート2を直線的に進退作動させる駆動機構を備えた繰出装置とし、支柱3に相当するガイド部材を傾斜姿勢で設置した構成にもすることができる。
またガイド部材となる支柱3は、内部にガイド片10の前後面(頂部ガイド面)を案内摺接するガイドレールを形成することなく、シート2の案内移動を案内姿勢における閉鎖部材15とシートガイド面20によって直接的に行なう簡潔な構成にしたが、従来の支柱のように内部にガイドレールを設けたものに対しても、該ガイドレールのシート路に対面させてシート路11を設けることにより実施することができる。
【0050】
【発明の効果】
以上のように構成した本発明のシートシャッタの気密構造は、次のような効果を奏する。
シートの側辺とガイド片を案内移動する左右のガイド部材のシート路に沿って、シートの表面を押接する閉鎖部材を接離自在に支持し、この閉鎖部材を駆動部から融通作動機構を介し所定の伝達力で作動させる構成にしたことにより、閉鎖部材がシートから離間した案内姿勢からシートを押接する閉鎖姿勢の切り換えをスムースに行うと共に、融通作動機構によって閉鎖姿勢に切り換えた閉鎖部材及び駆動部等に対し無理な負荷を与えることなく、閉鎖部材の閉鎖姿勢を維持することができる。
【0051】
またガイド部材のシートガイド面と閉鎖部材の間でシート路を形成し、閉鎖部材によってシートをシートガイド面の内端側のコーナー部との間で押接することにより、閉鎖部材の閉鎖姿勢において、シートガイド面のコーナー部と閉鎖部材の先端で挟持されたシート部分を屈曲させるので、屈曲されたシートの表面とコーナー部の機密性を高めてシートの両側の張り支持を行うことができる。
【0052】
またガイド部材のシートガイド面と閉鎖部材の内面で、ガイド片の抜け止め規制をして案内すると共に、閉鎖部材をガイド片の許容値以上の押動によって開放姿勢に切り換え可能にしたことにより、シートの案内移動を案内姿勢における閉鎖部材とシートガイド面によって直接的に行なうので、従来のもののようにガイド部材内にガイド片を案内移動させるガイドレールを設けることなく、ガイド部材の構造を製作し易い簡潔で廉価な構成にすることができる。またシートが許容値以上に押動されたとき融通作動機構の伝達力に抗しガイド片が閉鎖部材を開放姿勢に切り換えるので、ガイド片及びガイド部材等の損傷を防止しガイド部材からシートを外すことができる。
【0053】
そして、閉鎖部材を調節機構によってシートガイド面に対し遠近調節し、シート路の巾を調節できるようにしたことにより、シート路は構成部品や組み付け誤差及びガイド片の形状や大きさ等に対応し、閉鎖部材を調節しシート路の巾を簡単に設定することができ、またシート及びガイド片の移動をスムースに行うことができる。
【0054】
さらに、閉鎖部材をガイド部材内に設けた支持軸に揺動可能に支持すると共に、閉鎖部材の他側を融通作動機構のトルクリッミッタ機構を備えた作動片によって、案内姿勢から閉鎖姿勢に切り換え可能にしたことにより、支持軸から離れた位置で作動片によって閉鎖部材を作動し、シートを閉鎖部材によって確実に押接し閉鎖姿勢における機密性を高めると共に、作動片を介して閉鎖部材の閉鎖姿勢を支持することができる。
【図面の簡単な説明】
【図1】 本発明を備えたシートシャッタの正断面図である。
【図2】 図1の側断面図である。
【図3】 図1の支柱及び閉鎖部材等の構成を示す平断面図である。
【図4】 図3のシート路の構成とシートの作用を示す拡大平断面図である。
【図5】 シートガイド及び支柱とシートの構成を示す斜視図である。
【図6】 シートガイドと接地部の構成を示す正断面図である。
【図7】 図6の平断面図である。
【図8】 気密構造の構成を示す破断斜視図である。
【図9】 駆動部及び融通作動機構の構成を示す断面図である。
【図10】 図9のトルクリッミッタ機構を示す正面図である。
【符号の説明】
1 シートシャッタ
2 シート(シャッタ)
3 支柱(ガイド部材)
4 シートケース
5 シートドラム(繰出装置)
10 ガイド片
11 シート路
15 閉鎖部材
20 シートガイド面
21 コーナー部
30 シートガイド
31 導入間隙
56 融通作動機構
57 調節機構
59 支持軸
60 閉鎖板
61 シール部
72 開閉駆動モータ
73 減速機
80 作動片
90 作動杆
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an airtight structure of a seat shutter installed at an entrance / exit of a building such as a factory or a warehouse.
[0002]
[Prior art]
Conventionally, a sheet shutter installed at a doorway of a building, an opening of a partition, or the like is provided so that a flexible shutter sheet can be wound around a sheet drum, and guide pieces provided on both sides of the sheet are provided on both sides. Opening and closing is performed by moving up and down (advancing and retracting) along the guide member (support). Also, the guide piece is movably accommodated in a guide rail formed in the support column, and the seat path (groove) of the guide rail to which the seat is inserted and moved is formed as narrow as possible, so that the inside and outside of the support column The ventilation space is made in a shielding shape so that the seat and the column are kept airtight in the front-rear direction. (For example, see Reference Document 1.)
[0003]
This seat shutter is designed to push the guide piece in the lateral direction when the seat is strongly pushed in the front-rear direction due to wind pressure exceeding the wind resistance or contact with a person or a passing body, and receives a load exceeding the allowable value. Then, the seat path of the guide rail is expanded and pulled out, so that the local part or the whole of the pushed seat is removed from the guide member, and the load caused by the contact is released.
[0004]
[Patent Document 1]
JP 2001-207756 A (page 3, FIG. 3)
[0005]
[Problems to be solved by the invention]
A seat shutter having a configuration as shown in the above publication has a gap (ventilation space) formed between the seat and the seat path by forming the seat path of the guide rail that supports both sides of the seat so as to be vertically movable. Since the seat is kept small and airtight, the seat enters the guide rail through a small gap between the seat and the seat path when the seat is subjected to strong wind, and then enters the guide rail and enters the rear side of the seat. It will be. In addition, since the sheet path formed in a small width is in strong sliding contact with the side part of the moving sheet when the sheet is opened and closed, there is a large operating resistance when the sheet is opened and closed, and local wear of the sheet is likely to occur. There are drawbacks.
[0006]
Further, in order to reduce the contact resistance between the seat path and the seat and to make the structure airtight, there are problems that the structure of the support becomes complicated and that processing accuracy is required and the cost is increased.
And when the seat is pushed strongly in the front-rear direction by the wind or the like, the guide piece forcibly spreads out the seat path and comes out, so there is a drawback that the contact surface between the guide rail and the guide piece is likely to be damaged. When returning the returned sheet to the original feeding standby posture, there is a problem that a complicated operation for forcibly pushing the lowermost guide piece into the sheet path of the guide member is required.
[0007]
[Means for Solving the Problems]
The airtight structure of the sheet shutter according to the present invention for solving the above-described conventional problems is, firstly, that the guide pieces 10 for retaining the stopper provided along the both sides of the flexible sheet 2 are provided on the left and right guides. In the seat shutter 1 that is guided and moved along the seat path 11 formed in the member 3 to be opened and closed, a closing member 15 that is slidably supported on the surface of the seat 2 is provided along the seat path 11, and the closing member 15 is configured to be switchable between a closed posture in which the seat 2 is pressed against the drive unit 55 and a guide posture in which the guide member 3 is guided and moved away from the seat 2. The sheet path 11 is formed between the sheet guide surface 20 provided on the guide member 3 and the closing member 15, and the corner portion on the inner end side of the sheet guide surface 20 is formed by the closing member 15 switched from the guiding posture to the closing posture. The sheet 2 is pressed against 21 It is characterized by that.
[0008]
Secondly, an interchangeable operation mechanism 56 is provided between the drive unit 55 and the closing member 15 to transmit the driving force of the driving unit 55 to the closing member 15 side with a predetermined transmission force.
[0009]
First 3 In addition, the guide member 10 is guided by the seat guide surface 20 of the guide member 3 and the inner surface of the closing member 15 so as to prevent the guide piece 10 from coming off. It is characterized in that it can be switched.
[0010]
First 4 In addition, the width of the seat path 11 in the guiding posture can be adjusted by an adjusting mechanism 57 that adjusts the distance of the closing member 15 with respect to the seat guide surface 20.
[0011]
First 5 In addition, the closing member 15 is swingably supported on a support shaft 59 provided in the guide member 3, and the other side of the closing member 15 is pushed by the operating piece 80 of the interchangeable operating mechanism 56 having a torque limiter mechanism. The closing member 15 is configured to be switchable from the guiding posture to the closing posture with the support shaft 59 as a fulcrum.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 shown in FIGS. 1 and 2 is a sheet shutter installed at the entrance of the building. The frame of the seat shutter 1 includes a support (side frame) 3 as a guide member that supports the left and right sides of the seat 2 as a shutter seat and guides the movement in the vertical direction, and a seat case installed on top of the left and right supports 3. 4 and a feeding device 5 serving as an opening / closing mechanism for moving the seat 2 back and forth inside the seat case 4.
[0013]
The feeding device 5 of this embodiment is an advancing / retracting type seat drum that winds and feeds the sheet 2. The sheet 2 wound around the seat drum 5 is supported by the left and right support columns 3 so as to be movable on both sides in the vertical direction, and is moved up and down by forward and reverse rotation of the seat drum 5 to open and close the entrance / exit.
The seat case 4 is mounted and supported in a state of being placed on the upper part of the case frame 4a that is mounted and fixed on both sides of the upper part of the entrance of the building. The case frame 4a connects the front and rear of the left and right support frames 4b with a front cover 4c and a rear cover 4d, and forms a passage gap through which the sheet 2 passes between the rear end of the front cover 4c and the rear cover 4d.
[0014]
Hereinafter, the configuration of each part of the sheet shutter 1 will be described. First, as shown in FIG. 1, in the seat case 4, end plates 6a and 6a are detachably fitted and fixed to both sides of a rectangular tube-like cover frame 6 having an open lower surface, and a hollow cylindrical seat drum 5 is interposed therebetween. Is supported. The right end plate 6 a is fixed by a mounting screw in a state where the columnar drive motor 7 is inserted into the seat drum 5. The outer periphery of the mounting plate 8 provided on the motor shaft is connected to the inner surface of the winding drum 5.
[0015]
The left end plate 6 a is rotatably provided with a support shaft 8 b of a mounting plate 8 a that connects the left end portion of the seat drum 5. With this configuration, when the drive motor 7 rotates in the forward and reverse directions, the sheet drum 5 performs the lowering and lifting of the wound sheet 2 and opens / closes the entrance / exit.
The rotational operation of the drive motor 7 is performed via the control panel by a manual operation command by an operation switch (not shown) and a detection command based on a detection unit for detecting a passing body, as in the conventional case.
[0016]
The sheet 2 is made of a synthetic resin material and has a rectangular curtain body having flexibility and the like. The upper end (base side) is attached and fixed to the peripheral surface of the sheet drum 5 in the axial direction (lateral direction). A strip-shaped edge sheet 2b made of another member having wear resistance is attached to both side edges of 2a, and a plurality of guide pieces 10 having a shape to be described later are provided on the edge sheet 2b with a predetermined interval. ing.
This guide piece 10 is movably inserted into the support column 3 through a sheet path 11 formed in the support column 3, and guides the smooth movement of the both sides of the seat 2 when it slides up and down. .
[0017]
At this time, the edge sheet 2b has a band margin L in the form of a tongue piece inside the outer edge of the edge sheet 2b, and the guide piece 10 is provided, so that the guide piece 10 is not provided on the outer edge of the edge sheet 2b. The edge band part 2c used as a free end is formed.
With this configuration, for example, when the guide piece 10 is projected on the edge sheet 2b by a joining means such as high-frequency welder welding, the deformation of the sheet material can be suppressed by the internal stress of the edge band 2c. Further, as will be described later, when the sheet 2 removed from the support 3 is rolled up and returned to the support 3, the edge band portion 2 c is brought into sliding contact with the support 3 to prevent direct contact between the guide piece 10 and the support 3. . Furthermore, the free end of the edge band portion 2c can be provided in sliding contact with or close to the inner wall surface in the column 3, and in this case, the gap between the edge band portion 2c and the wall surface is reduced. Confidentiality can be improved. In addition, in the support | pillar 3 like the example of illustration, you may make it the structure which provided the auxiliary wall 3a as shown by the dotted line of FIG. 3 in this support | pillar 3, and was made to adjoin to the edge part of the edge band part 2c.
[0018]
Further, the seat 2 is provided with a grounding portion 12 between the left and right support columns 3 at the lower end thereof, which is airtight to the ground or the floor surface (hereinafter referred to as the floor surface) in the closed state where the seat 2 is lowered. ing. The grounding portion 12 has a weight portion that urges the seat 2 downward by gravity, and a contact sensor that detects contact with a passing body or an obstacle (contact object) when the seat 2 is lowered. A mechanism 13 is provided.
Then, when the seat 2 descends and the grounding part 12 comes into contact with the contact object, and the contact sensor mechanism 13 detects a contact pressure higher than a predetermined value with the contact object, an antenna (receiver) (not shown) receives a detection signal. The control panel issues a reverse rotation command to the drive motor 7, whereby the sheet drum 5 winds up (retreats) the sheet 2.
[0019]
Further, the seat shutter 1 prevents the wind from blowing through the front and rear of the seat 2, that is, between the outside and the inside of the support column 3, when the seat 2 is lowered to the ground. It has an airtight structure that prevents leakage to the outside. The airtight structure in this embodiment is constituted by upper closing members 14 and 14 provided on the seat case 4 side and side closing members 15 provided on the support column 3.
As a result, the seat shutter 1 can improve airtightness by blocking the ventilation of the seat 2 in the front-rear direction by the upper closing member 14 and the side closing member 15 in the grounding state of the grounding portion 12.
[0020]
In addition, when the passing body such as a car collides with the seat 2, the seat shutter 1 is pulled out and removed from the seat path 11 as the seat 2 is strongly pushed in the front-rear direction. And it is the structure which prevents the failure | damage of a related structural member.
Then, a seat return structure for returning the seat 2 that has been detached from the support 3 is provided between the support 3 and the seat case 4, and the seat 2 is simply lifted to automatically return to the original delivery standby posture. It is equipped with the structure which returns automatically.
[0021]
The detailed configuration of each part will be described below. First, as shown in FIG. 3, the support column 3 forms a peripheral wall having a rectangular cross section in a state in which a pair of front and rear support frame frames 16 and 17 joined together by a combination mounting screw 18 and both end surfaces of the peripheral wall. A frame seat path 19 for moving the seat 2 is formed so as to have a longitudinal groove shape, and a seat path 11 having a configuration described later is provided in the frame seat path 19.
That is, the front support frame 16 is a surface bent inward from the peripheral wall to form a seat guide surface 20 that forms the front side (lower side of the drawing) of the frame seat path 19, and this seat guide surface 20 has a corner portion at the inner end. 21 is formed and bent forward to form a guide piece restricting surface 22 for guiding the guide piece 10 to prevent it from coming off. (Figs. 4 and 5)
[0022]
The rear strut frame 17 forms a seat guide surface 23 on the rear side of the frame seat path 19 with a surface bent inward from the peripheral wall, and the seat guide surface 23 is shorter than the seat guide surface 20 and has an end thereof. By disposing the closing member 15 in the proximity state on the part side, a seal portion 61 described later of the closing member 15 is provided at a position facing the sheet guide surface 20 and the corner portion 21.
[0023]
The closing member 15 is opposed to the sheet guide surface 20 and is supported in a guiding posture when the seat 2 is opened and closed by positioning means described later, and a sheet path 11 is formed between the closing member 15 and the sheet guide surface 20. To do. The seat path 11 is narrower than the frame seat path 19 and is narrower than the thickness of the guide piece 10. The seat path 11 restricts the swinging movement of the seat 2 in the front-rear direction within the seat path 11 and freely moves up and down. In addition, the guide movement in which the guide piece 10 is prevented from coming off by the sheet guide surface 23 and the inner surface of the seal portion 61 is enabled.
[0024]
Thus, in a state where both sides of the sheet 2 and the guide piece 10 are inserted into the sheet paths 11 and 11 of the left and right support columns 3 and 3, the sheet 2 is guided and moved in a lateral direction to prevent loosening.
Further, in the above guiding posture, the closing member 15 is pushed in the pulling direction (lateral direction) of the guide piece 10 when the seat 2 is strongly pushed in the front-rear direction by the wind or the contact and receives a load exceeding the allowable value. Thus, the closing member 15 can be retracted in the direction of expanding the seat path 11 to release the restriction of the guide piece 10, and the side portion of the seat 2 can be pulled out of the column 3 to remove the overloaded portion. .
[0025]
On the other hand, the other side surface of the peripheral wall of the column frame 17 is bent toward the front side, and a partition wall 25 joined by a mounting screw 18 is formed in the middle part of the front wall of the column frame 16. 3 is formed in a state where the sheet moving chamber 26 and the adjusting chamber 27 are blocked to the left and right.
Further, upper and lower seat guide surfaces 20 and 23 are formed at the upper ends of the sheet guide surfaces 23 so as to form an expanding slope, and a guide surface having an upward funnel shape is provided on the upper part of the frame seat path 19 so that the seat 2 is at its highest position. When the vehicle descends from the descending standby posture (feed standby posture) shown in FIG. 6, the seat 2 and the guide piece 10 are smoothly introduced into the column 3 by the guide surface.
[0026]
In addition, a sheet return structure is provided on the upper portion of the support column 3 configured as described above so that when the sheet 2 removed from the support column 3 is wound up by the sheet drum 5, the sheet 2 is corrected and returned to the feeding standby posture. . As shown in FIGS. 2 and 5, in the sheet return structure, an introduction gap 31 is formed between the sheet guide 30 provided close to the feeding side of the sheet drum 5 and the upper portion of the support column 3. The sheet 2 that has come off is introduced by being rolled up, passed through the left and right sheet guides 30, corrected to the original feeding standby posture, and returned.
[0027]
As shown in FIGS. 5 to 7, the seat guide 30 is a guide path 35 that guides the seat 2 toward the guide portion 11 of the support column 3 in a mode in which the seat 2 is sandwiched in the front-rear direction by a pair of front and rear guide portions 32 and 33. Is configured to be in a downward tangential direction on the feeding side of the sheet drum 5.
The guide portions 32 and 33 are supported inside a box-shaped case-like guide frame 36 in a plan view attached and fixed to the seat case 4 side, and the guide piece 10 is moved into the guide frame 36 through the guide path 35. A guide piece passage 37 is formed.
[0028]
In the illustrated example, the guide portions 32 and 33 are each provided with a guide roller 39 at the top portion of a block-like mountain shape when viewed from the front, and a guide surface 40 for guiding the guide piece 10 toward the guide piece passage 37 is formed above and below the guide roller 39. ing. Further, small spherical guide balls (not shown) are provided on the opposing flat surfaces of the guide portions 32 and 33 so as to smoothly guide the surface of the seat 2.
On the other hand, on the side surface of the guide frame 36 on the sheet 2 side, restricting members (stopper receivers) 41 and 41 for positioning and restricting the most elevated position of the sheet 2 are attached and fixed. The restricting members 41 and 41 form a passing gap through which the edge sheet 2b passes through the opposing surfaces of the restricting members 41 and 41, and are provided on both sides of the grounding portion 12 on the lower surfaces of the restricting members 41 and 41 provided on the left and right sheet guides 30. Further, the engaging pieces (stoppers) 42 are brought into contact with each other to restrict further upward movement of the sheet 2, and the drive motor 7 is stopped by this restriction load.
[0029]
Next, the grounding portion structure of the seat 2 will be described with reference to FIGS. This grounding portion 12 forms a hollow cylindrical bag portion 2d at the lower end of the sheet 2, and maintains a straightness of the lower end of the sheet in the bag portion 2d and a square cylindrical core material 43 constituting the weight portion. Contained. Further, a contact sensor mechanism 13 for detecting the contact when the lower part and the side part of the sheet 2 contact the contact object is installed in the grounding part 12. The outside is covered with a flexible ground cover 44 to protect the bag portion 2d and the contact sensor mechanism 13 and the like, and to improve the airtightness between the floor surface when grounded.
[0030]
Further, the core member 43 is fixedly detachably attached by inserting attachment portions 45 formed in a pair of front and rear locking pieces 42, 42 in both ends. Then, a part of the sheet 2, that is, the edge sheet 2 b is sandwiched from the front and rear sides on the inner side surfaces of the locking pieces 42, 42 and fixed together by a plurality of mounting screws 46. As a result, the core member 43 is positioned and fixed in the bag portion 2d using the rigidity of the sheet 2 via the locking piece 42 to prevent lateral movement and rotation, and the locking piece 42 is attached to the sheet 2 stably. I support it. Further, when the locking piece 42 comes into contact with the regulating member 41, the highest position of the sheet 2 is positioned, and when the drive motor 7 is rotated in the winding direction for a predetermined time in this state, the sheet 2 is wound. It is possible to correct the winding diameter and the winding posture.
[0031]
Next, the guide piece 10 will be described with reference to FIGS. A plurality of guide pieces 10 are protruded along the both side edges of the sheet 2 with a predetermined interval. The guide piece 10 has a rectangular or elliptical shape that is long in the advancing / retreating direction (moving direction of the seat 2) in the front view, and is formed as a semicircular or triangular chevron in the side view, and has a mountain-shaped skirt in the advancing / retreating direction. The downhill guide slope is formed in a substantially symmetrical shape from the top guide surface of the mountain shape. In addition, an inner guide surface 50 that is erected substantially orthogonally to the seat 2 and an outer guide slope 51 that is a downward slope toward the other side from the middle part of the top guide surface are formed inside the top guide surface in a plan view. ing. With this configuration, the guide piece 10 protruding from the surface of the sheet 2 with a plastic material is gradually thinned toward the end of the slope and has flexibility.
[0032]
As a result, when the sheet 2 is wound and fed out by the sheet drum 5, or when the sheet 2 is largely bent to one side as shown by the dotted line in FIGS. The end can follow the above-described bending direction and bend flexibly by its own flexibility. Therefore, unlike the conventional one, the piece-shaped block-shaped hard guide piece and the sheet are not separated from each other at the joint end, and early cracks and wear due to stress concentration and fatigue due to repeated bending can be suppressed. .
On the other hand, the inner guide surface 50 having a mountain shape when viewed from the side is slidably guided by the guide piece restricting surface 22 and the closing member 15 with a rigid sliding surface, so that the movement preventing the sheet 2 from being prevented from coming off is prevented. Can be done smoothly.
[0033]
Next, an upper airtight structure installed in the seat case 4 will be described with reference to FIGS. In this upper airtight structure, the upper closing members 14 and 14 are made of a flexible plate-like body formed of a plastic material or a rubber material, and the length spans between the front and rear of the left and right seat guides 30 and 30. Is formed.
On the other hand, in the lower part of the seat case 4, front and rear horizontal plate frames 52 and 53 are integrally provided horizontally. Then, the base portions of the front and rear upper closing members 14 and 14 are fixedly attached to the horizontal plate frames 52 and 53, respectively, and the front end portions that are free ends are pressed against the front and rear surfaces of the seat 2 so as to be slidable. As a result, the seat case 4 can confidentially shield the lower ventilation space through which the seat 2 passes up and down, and does not prevent the seat 2 from moving up and down.
[0034]
Next, the airtight structure of the side part will be described with reference to FIGS. The airtight structure of the side portion includes a closing member 15 for closing the seat path 11 by pressing the seat 2 from the guiding posture of the seat path 11 along the support column 3 as shown in FIG. In the closed state with descending ground contact, the drive unit 55 that switches the closing member 15 from the guide posture to the closed posture is installed between the closing member 15 and the drive unit 55, and the closing member 15 in the closed posture is set to a predetermined value or more. And an adjusting mechanism 57 that sets the width of the seat path 11 by adjusting the positioning of the guide posture of the closing member 15.
[0035]
As shown in FIG. 3, the closing member 15 crosses the frame seat path 19 and the closing plate 60 that is supported so as to be able to swing and rotate about a support shaft 59 provided along the substantially central portion of the partition wall 25. It consists of a seal part 61 attached and fixed to the tip of the closing plate 60 bent in the direction. Although the seal portion 61 is a strip-shaped seal member having a U-shaped cross section having flexibility, the sheet 2 can be directly pressed against the front end portion of the closing plate 60.
The support shaft 59 in the illustrated example is a hinge shaft that attaches and supports a plurality of longitudinal positions of the closing member 15 to the partition wall 25, and a closing plate is inserted by a spring 62 inserted into the support shaft 59. 60 is urged from the closed posture to the guide posture and the open posture (retracting rotation) direction that largely opens the seat path 11. A contact piece 65 that is brought into contact with a trapezoidal slope formed on the adjustment piece 63 of the adjustment mechanism 57 is bent at the base of the closing plate 60.
[0036]
The adjustment mechanism 57 has a leg portion 63a protruding from the bottom surface of the trapezoidal adjustment piece 63, and the leg portion 63a is inserted into a long hole 66 formed in the partition wall 25, and is inserted into a screw hole formed in the leg portion 63a. An adjusting screw 67 is screwed. The adjustment screw 67 is loosely fitted into a through-hole of a U-shaped bracket 69 attached and fixed to the back side of the partition wall 25, and its head faces a hole 70 formed in the support frame 16. As a result, the driver can be inserted from the hole 70 and the adjusting screw 67 can be rotated. The size of the hole 70 is smaller than that of the head of the adjusting screw 67 to prevent the hole 70 from being removed, and the distance between the inner surface of the support frame 16 and the bracket 69 that interposes the head of the adjusting screw 67 is set to be the adjusting screw 67. The gap is such that the head is hardly moved during rotation.
A compression spring 71 for preventing loosening is interposed between the bracket 69 and the leg portion 63a.
[0037]
When the adjustment screw 67 is rotated by this configuration, the adjustment piece 63 moves in the long hole 66 against the compression spring 71 and comes close to the contact piece 65, and the contact piece 65 is biased by the spring 62 at this position. Therefore, it is possible to reduce the distance between the sheet paths 11 by bringing the tip of the seal portion 61 closer to the sheet guide surface 20. Further, when the adjustment screw 67 is reversed, the adjustment piece 63 is moved in the separating direction, the seal portion 61 is moved away from the sheet guide surface 20, and the sheet path 11 can be positioned at the expanded position.
[0038]
Further, a plurality of adjustment mechanisms 57 configured in an assembly shape are installed with a predetermined interval in the column direction, and the entire length of the long closing member 15 is positioned and supported uniformly.
Accordingly, the closing member 15 is adjusted with respect to the seat guide surface 20 by the adjusting mechanism 57 so that the width of the seat path 11 can be adjusted, so that the seat path 11 can cope with manufacturing errors and assembly errors of each component. In addition to being able to be set easily, an allowable value in the detaching direction of the seat 2 corresponding to the shape and size of the guide piece 10 is set, and the seat 2 can be smoothly moved in the guiding position of the closing member 15.
[0039]
Next, the drive part 55 and the accommodation operation mechanism 56 of the closing member 15 will be described with reference to FIGS. 3, 8, 9, and 10. The drive unit 55 that drives the accommodation operating mechanism 56 includes an opening / closing drive motor 72 that is controlled and rotated in a manner to be described later, and a speed reducer 73 that is connected to the opening / closing drive motor 72 and outputs a reduced speed rotation. And is detachably attached to the partition wall 25.
The speed reducer 73 attaches and fixes the driving body 77 of the accommodation operating mechanism 56 to the output shaft 76, and loosely fits the operating body (driven body) 78 to a boss projecting from the driving body 77, thereby positioning in the axial direction. And support it. The operating body 78 is connected to an operating rod 90 provided with a plurality of other operating pieces 80 to be described later via a joint portion 79 at the other end.
[0040]
The driving body 77 and the operating body 78 constitute a torque limiter mechanism composed of conventional means on the same circumference centered on the axial center on the disk surfaces facing each other, and rotate from the driving body 77 to the operating body 78. It is configured to transmit power. In other words, a pair of clutch balls 91 are urged and supported by the springs 93 in the diameter direction with a phase difference of 90 degrees around the circumference of the drive body 77. On the other hand, a plurality of conical recessed hole-like ball holes 92 for releasably engaging the balls 91 are provided in the vicinity of the circumference of the operating body 78.
[0041]
At this time, the hole positions where the ball holes 92 are formed in the circumferential direction are such that when the balls 91, 91 that are paired in the diameter direction are engaged with the ball holes 92, 92, They are positioned so as to ride on a flat surface between adjacent ball holes 92. As a result, the accommodation operating mechanism 56 is transmitted by the two balls 91 that are paired, and when a relative displacement occurs between the drive body 77 and the operation body 78, the paired balls 91 and 91 are biased by the spring 93. As a result, the ball holes 92 and 92 of the next rank are quickly engaged and transmitted with a predetermined transmission force.
[0042]
The actuating body 78 in the illustrated example forms a smooth cam-like projecting surface on the outer periphery thereof, and constitutes an actuating piece 80 similar to that provided on the actuating rod 90. Each operating piece 80 smoothly presses the back surface of the closing plate 60 of the closing member 15 in the guiding position with the cam-like projecting surface as the opening / closing drive motor 72 rotates forward. 4 can be switched to the closed posture shown by the solid line. As the opening / closing drive motor 72 rotates in the reverse direction, the operating piece 80 rotates backward, and the retracting operation is performed until the pressing contact of the closing member 15 is released and it comes into contact with the inner wall of the column frame 17. Along with this, the closing member 15 is returned to a position where the contact piece 65 contacts the adjustment piece 63 by the urging force of the spring 62, and is brought into a guide posture in which the seat path 11 having the original width is formed.
[0043]
At this time, in the interchangeable operation mechanism 56 that performs the switching operation of the closing member 15 via the torque limiter mechanism, the operating piece 80 is in the closed posture of the closing member 15, and the operating piece 80 contacts the support frame 17. Even if the opening / closing drive motor 72 rotates further in the same direction in this state, when the load exceeding the set value of the ball 91 and the ball hole 92 is applied, the transmission to the operating piece 80 is released by the action of the torque limiter mechanism. Therefore, troubles such as a failure can be prevented without overloading the opening / closing drive motor 72 and each component.
[0044]
Accordingly, the rotation control of the opening / closing drive motor 72 is performed, for example, by detecting that the drive motor 7 of the seat drum 5 is rotated forward and the closing operation of the seat 2 is completed, and the opening / closing drive motor 72 is operated. The closing member 15 is switched to the closed posture by rotating the opening / closing drive motor 72 forward, and then the opening / closing drive motor 72 is rotated reversely at the same time as the drive motor 7 is reversely operated and stopped by the timer setting. The position of the closing member 15 can be switched by simple rotation control means.
[0045]
In the sheet shutter 1 configured as described above, when the sheet drum 5 is advanced by the rotation of the drive motor 7 from the supply standby posture, the both sides of the sheet 2 are guided by the guide path 35 of the sheet guide 30. The guide piece passage 37 is moved and inserted into the column 3 through the introduction gap 31. Next, the seat 2 moves in the guide portion 11 together with the guide piece 10 and is lowered by the weight of the grounding portion 12 and the weight portion, and stops in the closed state where the grounding portion 12 is grounded.
At this time, the seat shutter 1 is such that the upper closing members 14 and 14 are hermetically sealed above the seat 2 with both sides of the seat 2 being supported by the support column 3, and both sides of the seat 2 are sided by the closing member 15. By making the portion airtight and by the grounding portion 12 being in contact with the floor surface, the air flow in the front-rear direction of the seat 2 can be blocked and the airtightness of the seat shutter 1 can be maintained.
[0046]
At this time, the sheet 2 guided by the sheet path 11 formed by the sheet guide surface 20 of the guide member 3 and the closing member 15 is supported by the corner portion 21 on the inner end side of the sheet guide surface 20, and the closing member 15. The front end is in a closed posture in which the inner side of the corner portion 21 is pressed against, and the guide piece 10 side of the sheet 2 sandwiched between the corner portion 21 and the front end of the closing member 15 is bent along the corner portion 21. Even if there is wrinkles or slack on the surface, it will be stretched, and the confidentiality of the surface of the bent sheet 2 and the corner portion 21 can be improved, and the tension support on both sides of the sheet 2 can be firmly fixed. It can be carried out.
[0047]
When the seat 2 comes into contact with the contact object or is strongly pushed in the front-rear direction by a strong wind and is subjected to a load exceeding the allowable value, the closing member is pressed by the pushing force exceeding the allowable value in the lateral direction of the guide piece 10. 15, the closing member 15 is pivoted and bent with the support shaft 59 as a fulcrum, and the seat path 11 is opened to open, so that the lateral support of the seat 2 by the guide portion 11 is released. Thus, the local part or the whole of the pushed sheet 2 can be removed from the support column 3, and the load caused by the pushing action can be released.
Thereafter, as shown by the dotted lines in FIG. 2, the seat portion that is detached from the column 3 is introduced from the introduction gap 31 by a simple operation of simply raising the seat 2 by the seat return structure. Since the sheet guide 30 is passed through and automatically corrected and returned to the original drawing standby posture, the sheet shutter 1 can be used continuously without pausing for a long time.
[0048]
In addition, the closing member 15 provided along the seat path 11 of the support column 3 is supported so as to press the surface of the seat 2 so as to be able to come into contact with and away from the seat 2, and the operation provided with the torque limiter mechanism of the accommodation operation mechanism 56 from the drive unit 55 Since the piece 80 is actuated in the pressing direction with a predetermined transmission force, the opening / closing drive motor 72 is temporarily moved in a state where the closing member 15 is switched from the guide position separated from the sheet 2 to the closed position pressing the sheet 2. Even if it is rotated, the opening / closing drive motor 72 and related members are not forced.
Further, the closing member 15 switched to the closing posture is maintained by the operating piece 80 even when the opening / closing drive motor 72 is stopped, and the closing member 15 is brought into the opening posture by the pushing of the guide piece 10. Since the operating piece 80 is retracted by pushing the closing member 15 beyond a predetermined value, the opening / closing drive motor 72 is not forced to reverse.
[0049]
In the illustrated example of the sheet shutter 1, the feeding device 5 that moves the sheet 2 forward and backward is a cylindrical sheet drum that winds and stores the sheet 2. It is also possible to adopt a configuration in which a guide device corresponding to the support column 3 is installed in an inclined posture as a feeding device provided with a drive mechanism that moves forward and backward.
Further, the column 3 serving as a guide member does not form a guide rail that guides and slides the front and rear surfaces (top guide surfaces) of the guide piece 10 inside, and the closing member 15 and the sheet guide surface in the guide posture to guide and move the seat 2. Although a simple configuration is performed directly by 20, it is implemented by providing a seat path 11 facing the seat path of the guide rail even for a conventional support rail provided with a guide rail inside. can do.
[0050]
【The invention's effect】
The airtight structure of the seat shutter of the present invention configured as described above has the following effects.
A closing member that presses against the surface of the sheet is slidably supported along the sheet path of the left and right guide members that guide and move the side of the sheet and the guide piece, and the closing member is supported from the drive unit via a flexible operation mechanism. With the configuration in which the operation is performed with a predetermined transmission force, the closing member is smoothly switched from the guiding posture separated from the seat to the closing posture in which the seat is pressed, and the closing member and the drive are switched to the closing posture by the flexible operation mechanism. The closing posture of the closing member can be maintained without imposing an excessive load on the part or the like.
[0051]
Further, by forming a sheet path between the sheet guide surface of the guide member and the closing member, and pressing the sheet between the inner edge side corner portion of the sheet guide surface by the closing member, in the closing posture of the closing member, Since the sheet portion sandwiched between the corner portion of the sheet guide surface and the tip of the closing member is bent, the secrecy of the surface of the bent sheet and the corner portion can be enhanced, and tension support on both sides of the sheet can be performed.
[0052]
In addition, the guide member seat guide surface and the inner surface of the closing member are guided to prevent the guide piece from coming off, and the closing member can be switched to the open position by pushing more than the allowable value of the guide piece. Since the guide movement of the seat is directly performed by the closing member and the seat guide surface in the guiding posture, the structure of the guide member can be manufactured without providing a guide rail for guiding and moving the guide piece in the guide member unlike the conventional one. It is possible to make the configuration simple and inexpensive. In addition, when the sheet is pushed beyond the allowable value, the guide piece switches the closing member to the open position against the transmission force of the accommodation mechanism, so that the guide piece and the guide member are prevented from being damaged and the sheet is removed from the guide member. be able to.
[0053]
And by adjusting the distance of the closing member with respect to the seat guide surface by the adjustment mechanism, the width of the seat path can be adjusted, so that the seat path corresponds to the components and assembly errors, the shape and size of the guide piece, etc. The width of the seat path can be easily set by adjusting the closing member, and the seat and the guide piece can be moved smoothly.
[0054]
Further, the closing member is swingably supported on a support shaft provided in the guide member, and the other side of the closing member is switched from the guide posture to the closed posture by an operation piece having a torque actuating mechanism of a flexible operation mechanism. By enabling it, the closing member is operated by the operating piece at a position away from the support shaft, and the seat is securely pressed by the closing member to increase the confidentiality in the closing position, and the closing position of the closing member is set via the operating piece. Can be supported.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a sheet shutter provided with the present invention.
FIG. 2 is a side sectional view of FIG.
3 is a cross-sectional plan view illustrating the configuration of the support column, the closing member, and the like of FIG.
4 is an enlarged plan sectional view showing the configuration of the seat path in FIG. 3 and the operation of the seat.
FIG. 5 is a perspective view illustrating a configuration of a seat guide, a support column, and a seat.
FIG. 6 is a front sectional view showing a configuration of a sheet guide and a grounding portion.
7 is a plan sectional view of FIG. 6. FIG.
FIG. 8 is a cutaway perspective view showing a configuration of an airtight structure.
FIG. 9 is a cross-sectional view showing a configuration of a drive unit and a flexible operation mechanism.
10 is a front view showing the torque limiter mechanism of FIG. 9. FIG.
[Explanation of symbols]
1 Seat shutter
2 Sheet (Shutter)
3 Prop (guide member)
4 seat case
5 Sheet drum (feeding device)
10 Guide pieces
11 Seat path
15 Closing member
20 Seat guide surface
21 Corner
30 sheet guide
31 Introduction gap
56 Flexible operating mechanism
57 Adjustment mechanism
59 Support shaft
60 Closure plate
61 Sealing part
72 Opening and closing drive motor
73 Reducer
80 working pieces
90 Working rod

Claims (5)

可撓性を有するシート(2)の両側に沿って設けた抜け止め用のガイド片(10)を、左右のガイド部材(3)に形成したシート路(11)内に沿って案内移動し開閉作動させるシートシャッタ(1)において、前記シート路(11)に沿ってシート(2)の表面に接離自在に支持した閉鎖部材(15)を設け、該閉鎖部材(15)を駆動部(55)によりシート(2)を押接する閉鎖姿勢と、シート(2)から離間せしめてガイド部材(3)を案内移動させる案内姿勢とに切り換え可能に構成し、ガイド部材(3)に設けたシートガイド面(20)と閉鎖部材(15)の間でシート路(11)を形成し、案内姿勢から閉鎖姿勢に切り換えられた閉鎖部材(15)により、シートガイド面(20)の内端側のコーナー部(21)との間でシート(2)を押接するシートシャッタの気密構造。The guide pieces (10) for preventing slipping provided along both sides of the flexible sheet (2) are guided and moved along the sheet path (11) formed in the left and right guide members (3) to open and close. In the seat shutter (1) to be actuated, a closing member (15) is provided along the seat path (11) to be detachably supported on the surface of the seat (2), and the closing member (15) is provided with a driving unit (55). ) Can be switched between a closed posture in which the sheet (2) is pressed and a guide posture in which the guide member (3) is guided and moved away from the sheet (2), and is provided on the guide member (3). A seat path (11) is formed between the surface (20) and the closing member (15), and a corner on the inner end side of the seat guide surface (20) is formed by the closing member (15) switched from the guiding posture to the closing posture. Part (21) (2) gas-tight structure of the sheet shutter presses against the. 駆動部(55)と閉鎖部材(15)との間に、駆動部(55)の駆動力を所定の伝達力で閉鎖部材(15)側に伝動する融通作動機構(56)を介設した請求項1のシートシャッタの気密構造。  An interfacing mechanism (56) for transmitting the driving force of the driving portion (55) to the closing member (15) side with a predetermined transmission force is interposed between the driving portion (55) and the closing member (15). Item 1. The airtight structure of the sheet shutter of item 1. ガイド部材(3)のシートガイド面(20)と閉鎖部材(15)の内面で、ガイド片(10)の抜け止め規制をして案内すると共に、閉鎖部材(15)をガイド片(10)による許容値以上の押動によって開放姿勢に切り換え可能に構成した請求項1又は2のシートシャッタの気密構造。The sheet guide surface (20) of the guide member (3) and the inner surface of the closing member (15) are guided by restricting the guide piece (10) from coming off, and the closing member (15) is guided by the guide piece (10). 3. The airtight structure of a seat shutter according to claim 1 , wherein the seat shutter can be switched to an open posture by pushing more than an allowable value. 閉鎖部材(15)をシートガイド面(20)に対し遠近調節させる調節機構(57)によって、案内姿勢におけるシート路(11)の巾を調節可能に構成した請求項1又は2又は3のシートシャッタの気密構造。4. The seat shutter according to claim 1, wherein the width of the seat path (11) in the guiding posture is adjustable by an adjusting mechanism (57) for adjusting the distance of the closing member (15) relative to the seat guide surface (20). Airtight structure. 閉鎖部材(15)をガイド部材(3)内に設けた支持軸(59)に揺動可能に支持すると共に、トルクリッミッタ機構を備えた融通作動機構(56)の作動片(80)によって閉鎖部材(15)の他側を押動し、閉鎖部材(15)を支持軸(59)を支点に案内姿勢から閉鎖姿勢に切り換え可能に構成した請求項1又は2又は3又は4のシートシャッタの気密構造。The closing member (15) is swingably supported by a support shaft (59) provided in the guide member (3), and is closed by an operating piece (80) of a flexible operating mechanism (56) having a torque trimming mechanism. The seat shutter according to claim 1, 2 or 3 or 4, wherein the other side of the member (15) is pushed so that the closing member (15) can be switched from the guiding posture to the closing posture with the support shaft (59) as a fulcrum. Airtight structure.
JP2003157562A 2003-06-03 2003-06-03 Airtight structure of seat shutter Expired - Lifetime JP4189911B2 (en)

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JP2003157562A JP4189911B2 (en) 2003-06-03 2003-06-03 Airtight structure of seat shutter

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JP2004360238A5 JP2004360238A5 (en) 2006-06-15
JP4189911B2 true JP4189911B2 (en) 2008-12-03

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