JP3589862B2

JP3589862B2 - Screen device

Info

Publication number: JP3589862B2
Application number: JP15258498A
Authority: JP
Inventors: 和生竹野
Original assignee: Bunka Shutter Co Ltd
Current assignee: Bunka Shutter Co Ltd
Priority date: 1998-06-02
Filing date: 1998-06-02
Publication date: 2004-11-17
Anticipated expiration: 2018-06-02
Also published as: JPH11343784A

Description

【０００１】
【発明の属する技術分野】
本発明はスクリーン装置に係り、たとえば、建物、主として工場等の出入口を遮蔽して工場内への風及び塵埃等の侵入を防止する仕切用スクリーン、建物内の温度を保持する仕切用スクリーン、または、建物内の所定の位置を防火区画として遮蔽し火災時に煙りの拡散と延焼を防止するものに関する。
【０００２】
【従来の技術】
従来、この種のスクリーン装置、たとえば、建築基準法により鋼製防火・防炎シャッターの使用が定められている箇所には非鋼製の防火・防炎用の不燃性シート体を有する耐火スクリーン装置が使用されるようになっている。
【０００３】
この種の耐火スクリーン装置は、建築基準法により鋼製防火・防炎シャッターと同様に耐火性及び気密性が求められ、たとえば、図１０及び図１１に示すように、被遮蔽部ａの両側部に相対して固定された上下方向のガイドレールｂを設け、この両側部のガイドレールｂ間にこの両側部のガイドレールｂ間の被遮蔽部ａを遮蔽する不燃性生地にて形成された不燃性シート体ｃを昇降自在に設け、この不燃性シート体ｃの下端部に前記被遮蔽部ａの床面ｄに着床する着床板ｅを設ける構成が採られている。
【０００４】
そして、前記両側部のガイドレールｂに沿って不燃性シート体ｃを下降することにより、この不燃性シート体ｃの下端部の着床板ｅが被遮蔽部ａの床面ｄに着床され、この不燃性シート体ｃ及びこの不燃性シート体ｃの下端部の着床板ｅにて被遮蔽部ａが気密に遮蔽されるようになっている。
【０００５】
【発明が解決しようとする課題】
前記図１０及び図１１に示す耐火スクリーン装置では、不燃性シート体ｃ及び着床板ｅにて被遮蔽部ａを遮蔽した状態で、この不燃性シート体ｃが火災熱により加熱されて上方に向かって熱収縮すると、この不燃性シート体ｃにて床面ｄに着床した状態の着床板ｅが持ち上げられ、この着床板ｅと床面ｄとの間に隙間ｆが生じて気密性が損なわれることがある。また、不燃性シート体ｃが熱風によって煽られその圧力によって不燃性シート体ｃが押圧されると、この不燃性シート体ｃが押圧方向に向かって撓んで引き上げられ、この不燃性シート体ｃにて床面ｄに着床した状態の着床板ｅが持ち上げられ、この着床板ｅと床面ｄとの間に隙間ｆが生じて気密性が損なわれることがある、という問題がある。
【０００６】
本発明は、このような課題に鑑みてなされたもので、シート体が熱風等の風によって煽られその圧力によって押圧されても、このシート体の下端部と床面との間に隙間が生じることを防止でき、したがって、被遮蔽部の遮蔽時に十分に気密性を保持できるスクリーン装置を提供することを目的とするものである。
【０００７】
【課題を解決するための手段】
請求項１記載のスクリーン装置は、被遮蔽部の両側部に相対して固定され互いに対向して挿入口を上下方向に形成したガイドレールと、この両側部のガイドレールの挿入口に幅方向の両側端部をそれぞれ挿入して昇降自在に設けられ下降時に前記被遮蔽部を遮蔽するシート体と、このシート体の下端部に設けられ前記被遮蔽部の床面に着床する着床体と、を具備し、前記着床体は、前記シート体の下端部に沿って下方に向かって突設され前記被遮蔽部の床面に着床時に偏平状に変形して着床し前記シート体の下端部と前記床面との間を閉塞する中空閉塞体と、前記シート体の下端部に沿って設けられた棒状錘と、前記中空閉塞体の両面部に位置して前記棒状錘にそれぞれ回動自在に設けられ前記被遮蔽部の床面に着床時に前記棒状錘を中心に互いに広がる反対方向に向かって開回動して着床する板状錘と、を有するスクリーン装置であって、前記中空閉塞体は、両側端部に前記ガイドレールの挿入口内に昇降自在に挿入する挿入部を有し、前記被遮蔽部の床面に向かう下降時には前記シート体の下端部から下方に向かって垂れ下がり前後方向から二つ折りに折り曲げられて下方に向かって突出した偏平状に変形した状態で下降するものである。
【０００８】
そして、被遮蔽部を遮蔽する場合はシート体を下降することにより、このシート体は幅方向の両側端部が両側部のガイドレールの挿入口に沿って、着床体の両側端部が両側部のガイドレールの挿入口に沿ってそれぞれ下降され、かつ、この着床体の重量によりシート体がスムーズに下降される。このとき、着床体は中空閉塞体の両面部の板状錘が自重により棒状錘を中心に閉回動して両面から中空閉塞体を挟んで吊り下げられた状態で下降される。
【０００９】
また、シート体の下降で着床体の両面部の板状錘の下端部及び中空閉塞体の下端部が床面に着床され、さらに、このシート体が下降されることにより、この着床体の棒状錘の重量により中空閉塞体及び両面部の板状錘が上方から押圧される。
【００１０】
そして、中空閉塞体が互いに反対方向に向かって突出して床面との接触面を大きくして上下に二つ折りに折り曲げられて偏平状に変形された状態で着床されるとともに、両面部の板状錘が棒状錘を中心に床面に着床したまま床面に沿って互いに広がる反対方向に向かって大きく開回動される。
【００１１】
したがって、偏平状に変形されて着床した中空閉塞体にてシート体の下端部と床面との間が確実に気密に閉塞され、この中空閉塞体の両面部に位置して互いに反対方向に向かって大きく開回動されて着床した板状錘にてシート体の下端部と床面との間が更に確実に気密に閉塞される。
【００１２】
そして、偏平状に変形されて着床した中空閉塞体及び互いに反対方向に向かって大きく開回動されて着床した板状錘は、棒状錘の重量により上方からそれぞれ押圧されることにより、シート体の下端部と床面との間に熱風等が流出入する隙間が生じることを防止される。そうして、このシート体及び着床体にて被遮蔽部の一方側から他方側に向かって熱風等が流出入することが防止される。
【００１３】
つぎに、シート体及び着床体にて被遮蔽部を気密に遮蔽した状態で、シート体が熱風等の風により煽られた圧力により押圧方向に向かって撓もうとするときは、着床体の棒状錘及び両面部の板状錘の重量によりシート体が簡単には引き上げられないが、その熱風等の風の圧力によりシート体が押圧方向に向かって撓んで引き上げられた場合は、そのシート体の引上げ量に応じてシート体の下端部にて棒状錘が引き上げられるとともに、この棒状錘にて中空閉塞体及び両面部の板状錘がそれぞれ引き上げられる。
【００１４】
このとき、中空閉塞体は床面との接触面を大きくして上下に二つ折りに折り曲げられて偏平状に変形された状態で着床されていることにより、この中空閉塞体が偏平状に変形された状態から二つ折りの上部に位置する折重ね部分が引き上げられてシート体の引上げ量に対応し、すなわち、二つ折りの上部に位置する折重ね部分が引き上げられてシート体の引上げ量を吸収し、この中空閉塞体の二つ折りの下部に位置して床面に着床した着床部分が引き上げられることを防止され、この中空閉塞体の二つ折りの下部に位置して床面に着床した着床部分が引き続き床面に着床され続ける。
【００１５】
また、両面部の板状錘は互いに反対方向に向かって大きく開回動されていることにより、この両面部の板状錘が大きく開回動された状態から引き上げられながら棒状錘を中心に中空閉塞体を介して床面に着床したまま床面に沿って互いに接近する方向に向かって閉回動されてシート体の引上げ量に対応し、この両面部の板状錘が引き続き床面に着床され続ける。
【００１６】
したがって、シート体が熱風等の風により煽られた圧力により押圧方向に向かって撓んで引き上げられても、そのシート体の引上げ量に中空閉塞体及び両面部の板状錘がそれぞれ床面に着床したまま対応し、この中空閉塞体及び両面部の板状錘にてシート体の下端部と床面との間に隙間が生じることを防止してこれらの間を気密に閉塞した閉塞状態が確実に保持される。
【００１７】
請求項２記載のスクリーン装置は、請求項１記載のスクリーン装置において、シート体は、下端部に棒状錘を挿通する中空筒状部を有し、この中空筒状部は、両面部に間隔をおいて複数の挿入孔をそれぞれ有し、板状錘は、前記各挿入孔から前記中空筒状部内に突出して前記棒状錘を挿通する複数の環状突部をそれぞれ有する、ものである。
【００１８】
そして、シート体の下端部の中空筒状部の各挿入孔に板状錘の各環状突部をそれぞれ挿入し、この板状錘の各環状突部をそれぞれ中空筒状部内に突出し、この中空筒状部内及び中空筒状部内に突出された各環状突部内に棒状錘を挿通することにより、シート体の下端部の両面部に板状錘がそれぞれ回動自在に簡単に取り付けられる。
【００１９】
請求項３記載のスクリーン装置は、請求項１または２記載のスクリーン装置において、中空閉塞体及び中空筒状部は、シート体を折り返してそれぞれ形成し、中空閉塞体は、前記中空筒状部の下端部に沿って下方に向かって突設されている、ものである。
【００２０】
そして、中空閉塞体及び中空筒状部はシート体を折り返してそれぞれ形成することにより、中空閉塞体及び中空筒状部はシート体の下端部に一体に中空閉塞体及び中空筒状部として簡単に形成され、この中空筒状部内に挿入した棒状錘が十分に保護される。
【００２１】
請求項４記載のスクリーン装置は、請求項１または２記載のスクリーン装置において、板状錘は、この板状錘の下端部に床面に着床する円弧状の着床部を有する、ものである。
【００２２】
そして、板状錘は棒状錘を中心に開閉回動されるが、このとき、板状錘の円弧状の着床部が床面に沿ってスムーズに開閉移動される。
【００２３】
請求項５記載のスクリーン装置は、請求項１乃至３のいずれかに記載のスクリーン装置において、シート体は、中空筒状部の上方に位置してシート体の両面部に設けられ被遮蔽部の床面に着床時に板状錘を介して互いに反対方向に向かって拡開して着床するシート片をそれぞれ有する、ものである。
【００２４】
そして、被遮蔽部の床面に着床時に両面部のシート片が板状錘を介して互いに反対方向に向かって拡開して着床することにより、この両面部のシート片にて両面部の板状錘及び中空閉塞体がそれぞれ両面側から被覆され、かつ、板状錘の各環状突部を挿入した中空筒状部の両面部の各挿入孔がそれぞれ両面側から被覆される。したがって、シート体の下端部と被遮蔽部の床面との間が更に確実に気密に閉塞される。
【００２５】
【発明の実施の形態】
以下、本発明の一実施の形態を図面を参照して説明する。
【００２６】
１は被遮蔽部２の相対する両側壁部にそれぞれ相対して垂直状に固定された上下方向の左右のガイドレールで、この左右のガイドレール１は互いに対向して上下方向の挿入口３を開口して断面略コ字形状に形成されている。前記挿入口３は、図示しないが前記ガイドレール１の内側板部にそれぞれ形成され、その開口縁部に相対して形成された上下方向の案内片をそれぞれ有している。前記被遮蔽部２とは建物、たとえば、工場等の出入口、非常口及び通路等の開口部及び防火・防炎上の防火区画として遮蔽する必要がある箇所の開口部を意味している。
【００２７】
また、前記被遮蔽部２の天井壁部４に前記左右のガイドレール１の上端部がそれぞれ挿入固定され、この天井壁部４には前記左右のガイドレール１の挿入口３及び前記被遮蔽部２の下面に連通して開口した後述するシート体及び着床体が上下動する上下方向の案内通路５が形成されている。また、前記案内通路５の上方に位置して前記天井壁部４にボックス６が固定され、このボックス６は下端部に前記案内通路５に連通して開口した左右方向の開口部７を有している。
【００２８】
また、前記ボックス６内には左右方向の巻取ドラム８を有する巻取軸９が回転自在に軸架され、この巻取軸９の一端部にはこの巻取軸９を駆動回転する回転輪１０が固着されている。また、前記ボックス６内に正逆転可能なモータ１１が固定され、このモータ１１の出力軸１２に前記回転輪１０に対向する位置に駆動輪１３が固着され、この駆動輪１３と前記回転輪１０との間には無端回行体１４が回行自在に懸架されている。前記前記モータ１１は後述する着床体が前記被遮蔽部２の床面１５に着床する着床位置に合わせて設定された所定の回転数の回転で自動的に停止されるようになっている。
【００２９】
つぎに、１６は前記被遮蔽部２を遮蔽する昇降自在のシート体としての不燃性シート体で、この不燃性シート体１６は、前記巻取ドラム８に上端部が固着されて巻き戻し自在に巻き付けられ、幅方向の両側端部に前記左右のガイドレール１の挿入口３に昇降自在に挿入した挿入部１７をそれぞれ有するとともに、この不燃性シート体１６の下端部に中空筒状部１８を有して構成されている。
【００３０】
また、前記中空筒状部１８は、前記不燃性シート体１６の下端部に沿って両側端部を開口した挿通孔１９を有し、この中空筒状部１８は、両面部（前記被遮蔽部２の正面視前後方向）に所定の間隔をおいて対向して略矩形状の複数の挿入孔２０をそれぞれ有して形成されている。そして、前記中空筒状部１８は、前記不燃性シート体１６の挿入部１７の両縁部に両端部を有して形成されている。
【００３１】
つぎに、２１は前記不燃性シート体１６の下端部に設けられ前記被遮蔽部２の床面１５に着床する着床体としての不燃性着床体で、この不燃性着床体２１は、前記不燃性シート体１６の下端部の前記中空筒状部１８に沿って下方に向かって突設され前記被遮蔽部２の床面１５に着床時に偏平状に変形して着床し前記不燃性シート体１６の下端部と前記床面１５との間を閉塞する中空閉塞体２２と、前記不燃性シート体１６の下端部に沿って形成された前記中空筒状部１８の挿通孔１９に挿通される棒状錘２３と、前記中空閉塞体２２の両面部に位置して前記棒状錘２３にそれぞれ回動自在に設けられ前記被遮蔽部２の床面１５に着床時に前記棒状錘２３を中心に互いに広がる反対方向に向かって開回動して着床する前後一対の板状錘２４と、を有して構成されている。
【００３２】
前記中空閉塞体２２は、前記被遮蔽部２の床面１５に向かう下降時は前記中空筒状部１８の下端部から下方に向かって垂れ下がり前後方向から二つ折りに折り曲げられて下方に向かって突出した偏平状に変形可能で、前記被遮蔽部２の床面１５に着床時は上下方向から二つ折りに折り曲げられて前記床面１５に沿うように偏平状に変形可能な形態に形成されている。しかして、前記中空閉塞体２２は、両側端部に開口した袋状体２５にて形成され、この袋状体２５の両側端部は前記左右のガイドレール１の挿入口３内に昇降自在に挿入する挿入部２６として形成されている。
【００３３】
前記棒状錘２３は、前記中空筒状部１８と略同長の長さを有する金属製の丸棒２７にて形成されている。
【００３４】
前記一対の板状錘２４は、前記左右のガイドレール１の挿入口３内に挿入せずにこの挿入口３の開口面に対向して近接する両端部２８を有して横長矩形状に形成され、この一対の板状錘２４の上端部に前記中空筒状部１８の両面部の各挿入孔２０から前記挿通孔１９内に突出して前記棒状錘２３を挿通する通孔２９を形成した複数の環状突部３０をそれぞれ有し、この一対の板状錘２４の下端部に前記床面１５に着床する床面１５側に突出した円弧状の着床部３１をそれぞれ有して形成されている。そして、前記一対の板状錘２４は、ステンレス等の意匠性が高く見栄えのよい金属板３２にてそれぞれ形成されている。
【００３５】
そして、前記不燃性シート体１６に前記中空筒状部１８を形成する位置をこの不燃性シート体１６の下端部として、この不燃性シート体１６の下端部に前記中空筒状部１８が形成され、この不燃性シート体１６の下端部の中空筒状部１８の下端部に沿って前記中空閉塞体２２が形成されている。
【００３６】
しかして、前記中空筒状部１８及び前記中空閉塞体２２は、前記不燃性シート体１６を上方に向かって折り返すとともに、この折返しシート部３３の上端部３４及びこの上端部３４の下方に位置して前記中空筒状部１８を形成する部分を残して不燃性シート体１６に重合し、かつ、この上下の重合部を不燃性縫着糸等にて縫着する等の手段によりそれぞれ固定してそれぞれ両端部を開口して形成されている。前記不燃性シート体１６は、たとえば、ガラスクロス、シリカクロス等からなる不燃性生地にて形成されている。
【００３７】
そして、不燃性シート体１６の下端部の中空筒状部１８の各挿入孔２０に両面部の一対の板状錘２４の各環状突部３０をそれぞれ挿入し、この一対の板状錘２４の各環状突部３０をそれぞれ中空筒状部１８内に突出し、この中空筒状部１８内及び中空筒状部１８内に突出された各環状突部３０の通孔２９内に棒状錘２３を挿通することにより、不燃性シート体１６の下端部の両面部に一対の板状錘２４がそれぞれ簡単に取り付けられ、かつ、この一対の板状錘２４が棒状錘２３を中心に開閉回動自在に取り付けられている。
【００３８】
つぎに、前記実施の形態の作用を説明する。
【００３９】
非火災時等の通常時は不燃性シート体１６が巻き上げられて上昇され、この不燃性シート体１６の下端部の不燃性着床体２１が左右のガイドレール１の上端部で天井壁部４の案内通路５内に収納状態に位置されている。
【００４０】
このとき、不燃性着床体２１の両面部の板状錘２４は自重により棒状錘２３を中心に閉回動して中空閉塞体２２を前後方向から押圧して下方に向かって突出した偏平状に変形した状態に挟持して案内通路５内に位置されている。
【００４１】
そして、偏平状に変形されて挟持された状態の中空閉塞体２２の下端部は両面部の板状錘２４の下端部より上方に位置し、かつ、この両面部の板状錘２４は下端部に互いに反対方向に向かって彎曲した着床部３１を有することにより、この両面部の板状錘２４にて中空閉塞体２２の下端部が見え難いとともに、この両面部の板状錘２４の下端部の着床部３１にて天井壁部４の案内通路５の下面を閉塞する状態でこの着床部３１が案内通路５の下面に位置されている。
【００４２】
したがって、非火災時等の通常時は案内通路５内に不燃性着床体２１が収納された状態では全体的には中空閉塞体２２の下端部が見え難いとともに、案内通路５の下面を閉塞する状態となり見栄えがよく、この両面部の板状錘２４をステンレスなどの意匠性の高い材料にて形成することにより、更に見栄えがよくなり、案内通路５の下面が開口している見苦しさが防止され、人の通路等として外観性が保たれている。
【００４３】
つぎに、被遮蔽部２を遮蔽する際、たとえば、被遮蔽部２を遮蔽する火災時に火災信号によりモータ１１が作動されると、このモータ１１からの出力により巻取軸９が不燃性シート体１６を巻き戻す方向に駆動回転され、この巻取軸９の巻取ドラム８から不燃性シート体１６が順次巻き戻され、この不燃性シート体１６の下端部の不燃性着床体２１が天井壁部４の案内通路５から下降される。
【００４４】
そして、この不燃性シート体１６は、この不燃性シート体１６の両挿入部１７及び不燃性着床体２１の棒状錘２３を有する中空筒状部１８の両端部並びに中空閉塞体２２の両端部の両挿入部２６がそれぞれ左右のガイドレール１の挿入口３に案内されて下降され、かつ、この不燃性シート体１６の下端部に設けた不燃性着床体２１の棒状錘２３及び両面部の板状錘２４の重量によりスムーズにかつ迅速に下降される。
【００４５】
このとき、不燃性着床体２１は天井壁部４の案内通路５に収納された状態のまま、すなわち、不燃性着床体２１は中空閉塞体２２の両面部の板状錘２４が自重により棒状錘２３を中心に閉回動して両面から中空閉塞体２２を挟持して吊り下げられた状態で下降される。
【００４６】
また、不燃性シート体１６の下降によりこの不燃性着床体２１の中空閉塞体２２及び一対の板状錘２４が被遮蔽部２の床面１５に着床してこの不燃性着床体２１が所定の位置まで下降されるとともに、モータ１１が設定された所定の回転数を回転して停止する。
【００４７】
すなわち、不燃性シート体１６の下降で不燃性着床体２１の両面部の板状錘２４の下端部及び中空閉塞体２２の下端部が床面１５に着床され、さらに、この不燃性シート体１６が下降されることにより、この不燃性着床体２１の棒状錘２３の重量により中空閉塞体２２及び両面部の板状錘２４が上方から押圧される。
【００４８】
そして、中空閉塞体２２が互いに反対方向に向かって突出して床面１５との接触面を大きくして上下に二つ折りに折り曲げられて偏平状に変形された状態で着床され、すなわち、中空閉塞体２２が床面１５に板状に変形して着床した着床板部２２ａと、この着床板部２２ａの上部に板状に変形して折り重なった重合板部２２ｂとの二つ折りに折り曲げられて偏平状に変形された状態で着床されるとともに、両面部の板状錘２４が棒状錘２３を中心に床面１５に着床したまま床面１５に沿って互いに広がる反対方向に向かって大きく開回動されるとともに、モータ１１が設定された所定の回転数を回転して停止する。
【００４９】
このとき、両面部の板状錘２４はこの板状錘２４の下端部に床面１５に着床する円弧状の着床部３１を有することにより、この両面部の板状錘２４は円弧状の着床部３１にて床面１５に沿ってそれぞれ互いに広がる反対方向に向かってスムーズに開回動される。そして、この両面部の板状錘２４は円弧状の着床部３１を床面１５に着床したまま二つ折りに折り曲げられた中空閉塞体２２の上部の重合板部２２ｂ上に重なる状態に大きく開回動される。
【００５０】
したがって、偏平状に変形されて床面１５に着床した中空閉塞体２２にて不燃性シート体１６の下端部と床面１５との間が確実に気密に閉塞され、この中空閉塞体２２の両面部に位置して互いに反対方向に向かって大きく拡開回動されて床面１５に着床された両面部の板状錘２１にて不燃性シート体１６の下端部と床面１５との間が更に確実に気密に閉塞される。
【００５１】
そして、偏平状に変形されて着床した中空閉塞体２２及び互いに反対方向に向かって大きく拡開回動されて着床した両面部の板状錘２４は、棒状錘２３の重量により上方からそれぞれ押圧されることにより、不燃性シート体１６の下端部と床面１５との間に熱風等の風が流出入する隙間が生じることを防止される。そうして、この不燃性シート体１６及び不燃性着床体２１にて被遮蔽部２の一方側から他方側に向かって熱風等の風が流出入することが防止され、熱風等の煙りの拡散と延焼が防止される。
【００５２】
つぎに、不燃性シート体１６及び不燃性着床体２１にて被遮蔽部２を気密に遮蔽した状態で、不燃性シート体１６が熱風等の風により煽られた圧力により押圧方向に向かって撓もうとしたり、不燃性シート体１６が熱風等により熱収縮するときは、不燃性着床体２１の棒状錘２３及び両面部の板状錘２４の重量により不燃性シート体１６が簡単には引き上げられないが、その熱風等の圧力により不燃性シート体１６が押圧方向に向かって撓んで引き上げられたり、不燃性シート体１６が熱風等により熱収縮して引き上げられた場合は、その不燃性シート体１６の引上げ量に応じて不燃性シート体１６の下端部にて棒状錘２３が引き上げられるとともに、この棒状錘２３にて中空閉塞体２２及び両面部の板状錘２４がそれぞれ引き上げられる。
【００５３】
このとき、中空閉塞体２２は床面１５との接触面を大きくして上下に二つ折りに折り曲げられて偏平状に変形された状態で着床されていることにより、すなわち、中空閉塞体２２が床面１５に板状に変形して着床した着床板部２２ａと、この着床板部２２ａの上部に板状に変形して折り重なった重合板部２２ｂとの二つ折りに折り曲げられて偏平状に変形された状態で着床されていることにより、この中空閉塞体２２が偏平状に変形された状態から二つ折りの上部に位置する重合板部２２ｂが着床板部２２ａから引き上げられて不燃性シート体１６の引上げ量に対応する。
【００５４】
すなわち、床面１５に着床板部２２ａが着床したままの状態でこの着床板部２２ａから重合板部２２ｂが引き上げられて不燃性シート体１６の引上げ量が吸収され、この中空閉塞体２２の二つ折りの下部に位置して床面１５に着床した着床板部２２ａが引き上げられることを防止され、この中空閉塞体の二つ折りの下部に位置して床面１５に着床した着床板部２２ａが引き続き床面１５に着床され続ける。
【００５５】
また、両面部の板状錘２４は互いに反対方向に向かって大きく拡開回動されていることにより、この両面部の板状錘２４が大きく拡開回動された状態から引き上げられながら棒状錘２３を中心に中空閉塞体２２を介して床面１５に着床したまま床面１５に沿って互いに接近する方向に向かって閉回動されて不燃性シート体１６の引上げ量に対応し、この両面部の板状錘２４が引き続き床面１５に着床され続ける。
【００５６】
このとき、両面部の板状錘２４はこの板状錘２４の下端部に床面１５に着床する円弧状の着床部３１を有することにより、この両面部の板状錘２４は棒状錘２３を中心に円弧状の着床部３１にて床面１５に沿ってそれぞれ互いに接近する方向に向かってスムーズに閉回動される。
【００５７】
したがって、不燃性シート体１６が熱風等により煽られた圧力により押圧方向に向かって撓んで引き上げられたり、不燃性シート体１６が熱風等により熱収縮して引き上げられることがあっても、その不燃性シート体１６の引上げ量に中空閉塞体２２及び両面部の板状錘２４がそれぞれ床面１５に着床したまま対応し、この中空閉塞体２２及び両面部の板状錘２４にて不燃性シート体１６の下端部と床面１５との間に隙間が生じることを防止してこれらの間を気密に閉塞した閉塞状態が引き続き確実に保持される。
【００５８】
つぎに、図８及び図９に示す実施の形態は、前記実施の形態において、不燃性シート体１６は中空筒状部１８の上方に位置して不燃性シート体１６の両面部に被遮蔽部２の床面１５に着床時に両面部の板状錘２４を介して互いに反対方向に向かって拡開して着床するシート片としての不燃性シート片３５をそれぞれ設けたものである。
【００５９】
前記両面部の不燃性シート片３５は、前記不燃性シート体１６に沿って横長矩形状にそれぞれ形成され、その上端部が前記不燃性シート体１６の両面部の取り付け位置に不燃性縫着糸等にてそれぞれ一体に固定され、その下端部を前記被遮蔽部２の床面１５に着床する着床部３６としてそれぞれ形成されている。
【００６０】
そして、前記両面部の不燃性シート片３５の着床部３６は、天井壁部４の案内通路５内に収容時は両面部の板状錘２４の円弧状の着床部３１の互いに反対方向に向かって突出した突出端部３７にて僅かに拡開した状態に支持され、かつ、この両面部の不燃性シート片３５の着床部３６にて両面部の板状錘２４の突出端部３７と案内通路５との間が更に閉塞されて案内通路５の下面の見栄えが更によくなり、被遮蔽部２の床面１５に着床時は突出端部３７に案内されて床面１５に沿って互いに反対方向に向かって拡開移動されるようになっている。
【００６１】
前記両面部の不燃性シート片３５は前記不燃性シート体１６と同じ不燃性材料にて形成されている。その他の構成は前記実施の形態の場合と同様であるから前記実施の形態と同一構成については前記実施の形態に用いた符号を記入してそれらの説明を省略する。
【００６２】
このように構成することにより、被遮蔽部２の遮蔽時は中空閉塞体２２及び両面部の板状錘２４は前記実施の形態の場合と同様に作動して被遮蔽部２の床面１５に着床されるが、このとき、両面部の不燃性シート片３５の着床部３６が両面部の板状錘２４の突出端部３７に案内されて被遮蔽部２の床面１５に着床されるとともに、この両面部の板状錘２４が両面部の板状錘２４を介して互いに広がる反対方向に向かって拡開移動される。
【００６３】
そして、この両面部の不燃性シート片３５にて大きく拡開回動して着床された両面部の板状錘２４及び偏平状に変形した着床した中空閉塞体２２がそれぞれ両面側から被覆され、かつ、両面部の板状錘２４の各環状突部３０を挿入した中空筒状部１８の両面部の各挿入孔２０がそれぞれ両面側から被覆される。したがって、不燃性シート体１６の下端部と被遮蔽部２の床面１５との間が更に確実に気密に閉塞される。
【００６４】
前記各実施の形態では、不燃性シート体１６及び不燃性着床体２１を用いた耐火スクリーン装置並びに、不燃性シート体１６、不燃性着床体２１及び不燃性シート片３５を用いた耐火スクリーン装置について説明したが、これに限らず、建物、たとえば、工場等の出入口を遮蔽して工場内への風及び塵埃等の侵入を防止する仕切用スクリーン装置、または建物内の温度を保持する仕切用スクリーン装置として用いてもよい。この場合は、シート体１６、着床体２１、及びシート片３５は、特に不燃性である必要がない。
【００６５】
また、前記各実施の形態では、被遮蔽部２は不燃性シート体１６にて遮蔽する場合について説明をしたが、これに限らず、被遮蔽部２は、たとえば、短冊板状の複数のスラット材または短冊板状の複数のパネル材をそれぞれ並設して一連に構成された不燃性のシャッターカーテンと、このシャッターカーテンの下端部に連設された不燃性シート体１６とにより全体としてシート状に一連に構成された不燃性のシート体にて遮蔽するようにしてもよい。このときも、前記各実施の形態の場合と同様に不燃性シート体１６の下端部に被遮蔽部２の床面１５に着床する不燃性着床体２１を設ける。
【００６６】
この場合も、不燃性シート体１６、不燃性のシャッターカーテン及び不燃性シート片３５は、たとえば、工場等の出入口を遮蔽して工場等への風及び塵埃等の侵入を防止する仕切用スクリーン装置、または建物内の温度を保持する仕切用スクリーン装置として用いてもよく、この際、シート体１６、シャッターカーテン及びシート片３５は、特に不燃性である必要がない。
【００６７】
このように、被遮蔽部２を遮蔽する部材は建物内の所定の位置を防火区画として遮蔽し火災時に煙りの拡散と延焼を防止する目的の場合は、シート体１６、シャッターカーテン及びシート片は不燃性材料にて形成し、また、工場等の出入口を遮蔽して工場等への風及び塵埃等の侵入を防止及び建物内の温度を保持するように出入口を気密に仕切を目的の場合は、シート体１６、シャッターカーテン及びシート片は特に不燃性材料にて形成することなく気密性の高い材料にて形成するとよい。
【００６８】
【発明の効果】
請求項１の発明によれば、着床体は、シート体の下端部に沿って下方に向かって突設され被遮蔽部の床面に着床時に偏平状に変形して着床し前記シート体の下端部と前記床面との間を閉塞する中空閉塞体と、前記シート体の下端部に沿って設けられた棒状錘と、前記中空閉塞体の両面部に位置して前記棒状錘にそれぞれ回動自在に設けられ前記被遮蔽部の床面に着床時に前記棒状錘を中心に互いに広がる反対方向に向かって開回動して着床する板状錘とを有するので、シート体にて被遮蔽部を遮蔽した状態でこのシート体が熱風等の風によって煽られその圧力によって押圧されても、着床体にてシート体の下端部と床面との間に熱風等の風が流出入する隙間が生じることを防止してこれらの間を気密に閉塞した閉塞状態を確実に保持でき、したがって、被遮蔽部の遮蔽時に十分に気密性を保持できる。
【００６９】
請求項２の発明によれば、請求項１の発明の効果に加え、シート体の下端部の中空筒状部の各挿入孔に板状錘の各環状突部をそれぞれ挿入し、この板状錘の各環状突部をそれぞれ中空筒状部内に突出し、この中空筒状部内及び中空筒状部内に突出された各環状突部内に棒状錘を挿通することにより、シート体の下端部の両面部に板状錘をそれぞれ回動自在に簡単に取り付けることができ、シート体に対する板状錘の組み付け操作が容易であり、棒状錘を板状錘の回動中心軸に兼用したので、部品点数が少なく構成も簡単である。
【００７０】
請求項３の発明によれば、請求項１または２の発明の効果に加え、中空閉塞体及び中空筒状部はシート体を折り返してそれぞれ形成したので、中空閉塞体及び中空筒状部はシート体の下端部に一体に中空閉塞体及び中空筒状部としてそれぞれ簡単に形成でき、この中空筒状部内に挿入した棒状錘を十分に保護できる。
【００７１】
請求項４の発明によれば、請求項１または２の発明の効果に加え、板状錘は棒状錘を中心に開閉回動できるが、このとき、板状錘は下端部にこの円弧状の着床部を有するので、この着床部が床面に沿ってスムーズに移動することにより板状錘を円滑に開閉移動できる。
【００７２】
請求項５の発明によれば、請求項１乃至３のいずれかの発明の効果に加え、被遮蔽部の床面に着床時に両面部のシート片が板状錘を介して互いに反対方向に向かって拡開して着床し、この両面部のシート片にて両面部の板状錘及び中空閉塞体をそれぞれ両面側から被覆でき、かつ、板状錘の各環状突部を挿入した中空筒状部の両面部の各挿入孔をそれぞれ両面側から被覆でき、したがって、シート体の下端部と被遮蔽部の床面との間を更に確実に気密に閉塞できる。
【図面の簡単な説明】
【図１】本発明の実施の形態を示すスクリーン装置の一部の斜視図である。
【図２】同上スクリーン装置の正面図である。
【図３】同上側面図である。
【図４】同上天井壁部内に着床体を収容した状態の断面図である。
【図５】同上床面上に降下した状態を示す着床体の断面図である。
【図６】同上シート体の下端部と床面との間を閉塞した状態を示す着床体の断面図である。
【図７】同上シート体が煽られる等により多少引き上げられた状態を示す着床体の断面図である。
【図８】他の実施の形態を示すシート体の下端部と床面との間を閉塞した状態を示す着床体の断面図である。
【図９】同上同上天井壁部内に着床体を収容した状態の断面図である。
【図１０】先行技術を示す耐火スクリーン装置の一部の正面図である。
【図１１】同上側面図である。
【符号の説明】
１ガイドレール
２被遮蔽部
３挿入口
１５床面
１６シート体
１８中空筒状部
２０挿入孔
２１着床体
２２中空閉塞体
２３棒状錘
２４板状錘
３０環状突部
３１着床部
３５シート片[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a screen device, for example, a building, a screen for partitioning mainly to block entrances and exits of factories and the like to prevent the intrusion of wind and dust into the factory, a partitioning screen for maintaining the temperature in the building, or The present invention relates to a device for shielding a predetermined position in a building as a fire prevention compartment to prevent the spread of smoke and the spread of fire in a fire.
[0002]
[Prior art]
Conventionally, a screen device of this kind, for example, a fire-resistant screen device having a non-steel fire- and flame-proof noncombustible sheet at a place where the use of a steel fire / flame-proof shutter is specified by the Building Standards Law. Is to be used.
[0003]
This type of fireproof screen device is required to have fire resistance and airtightness in the same manner as a steel fireproof / flameproof shutter according to the Building Standards Law. For example, as shown in FIG. 10 and FIG. A vertical guide rail b fixed to the front side is provided, and a non-combustible material formed of noncombustible fabric is interposed between the guide rails b on both sides to shield the shielded portion a between the guide rails b on both sides. The non-combustible sheet member c is provided so as to be able to move up and down, and a flooring plate e for landing on the floor surface d of the shielded portion a is provided at the lower end of the non-combustible sheet member c.
[0004]
Then, by descending the non-combustible sheet c along the guide rails b on both sides, the landing plate e at the lower end of the non-combustible sheet c is landed on the floor d of the shielded portion a, The non-combustible sheet c and the floor plate e at the lower end of the non-combustible sheet c are adapted to hermetically shield the shielded portion a.
[0005]
[Problems to be solved by the invention]
In the fire-resistant screen device shown in FIGS. 10 and 11, in a state where the shielded portion a is shielded by the non-combustible sheet member c and the flooring plate e, the non-combustible sheet member c is heated by fire heat and directed upward. When the heat shrinks, the non-combustible sheet member c lifts the flooring board e, which has landed on the floor surface d, and a gap f is formed between the flooring board e and the floor surface d, thereby impairing airtightness. May be When the non-combustible sheet c is pushed by hot air and pressed by the pressure, the non-combustible sheet c is bent in the pressing direction and pulled up. Thus, there is a problem that the floor board e in a state of being landed on the floor surface d is lifted, and a gap f is generated between the floor board e and the floor surface d, thereby impairing the airtightness.
[0006]
The present invention has been made in view of such a problem, and a gap is formed between the lower end portion of the sheet member and the floor surface even when the sheet member is pushed by a wind such as hot air and pressed by the pressure. Accordingly, it is an object of the present invention to provide a screen device that can prevent the occurrence of a problem, and can maintain sufficient airtightness when the shielded portion is shielded.
[0007]
[Means for Solving the Problems]
The screen device according to claim 1, wherein a guide rail fixed to both sides of the shielded portion and opposed to each other and formed with an insertion opening in a vertical direction, and a guide rail in the width direction provided on the insertion openings of the guide rails on both sides. A sheet body that is provided so as to be able to move up and down by inserting both side ends, and that shields the shielded part when descending, and a landing body that is provided at the lower end of the sheet body and land on the floor surface of the shielded part. The floor body is projected downward along the lower end of the sheet body, deforms into a flat shape when landing on the floor surface of the shielded part, and landed on the floor. A hollow closing body that closes between the lower end of the sheet and the floor surface, a rod-shaped weight provided along the lower end of the sheet body, and the rod-shaped weight located on both sides of the hollow closing body. The rod-shaped weight is provided rotatably at the time of landing on the floor surface of the shielded portion. It has a plate-like weight for implantation in the dynamic opening times toward the opposite direction spreads have a A screen device, wherein the hollow closing member has an insertion portion at both end portions for vertically ascending insertion into an insertion opening of the guide rail, and a lower end of the sheet member when descending toward the floor surface of the shielded portion. It hangs down from the part downward, is folded in two from the front and rear direction, and descends in a flat deformed state protruding downward Things.
[0008]
When shielding the shielded portion, the sheet body is lowered so that both side edges in the width direction are along the insertion openings of the guide rails on both sides, and both side ends of the landing body are both sides. The seat body is smoothly lowered by the weights of the landing bodies, respectively, along the insertion openings of the guide rails. At this time, the landing body is lowered in a state where the plate-shaped weights on both sides of the hollow closing body are closed and rotated around the rod-shaped weight by their own weight, and are suspended from both sides with the hollow closing body therebetween.
[0009]
In addition, the lower end of the plate-shaped weight and the lower end of the hollow block on both sides of the landing body are landed on the floor surface by the lowering of the sheet body, and the lowering of the sheet body further lowers the floor. The weight of the rod-shaped weight of the body pushes the hollow block and the plate-shaped weights on both sides from above.
[0010]
The hollow closure body projects in the opposite direction to each other, enlarges the contact surface with the floor surface, is folded up and down into two folds, and is landed in a state where it is deformed into a flat shape. The weights are pivotally opened and pivoted in the opposite directions spreading along the floor surface while being placed on the floor centering on the rod-shaped weights.
[0011]
Therefore, the gap between the lower end portion of the sheet member and the floor surface is reliably airtightly closed by the hollow closing body that has been deformed into a flat shape and landed, and is positioned on both sides of the hollow closing body in opposite directions. The gap between the lower end of the sheet member and the floor surface is more reliably hermetically closed by the plate-shaped weight that is greatly opened and rotated toward the floor.
[0012]
Then, the hollow closed body deformed in a flat shape and landed, and the plate-shaped weights that are greatly opened and rotated in the opposite directions to each other and landed are pressed from above by the weight of the rod-shaped weights, and the sheet is pressed. This prevents a gap between the lower end of the body and the floor surface from flowing in and out of hot air or the like. Thus, the flow of hot air or the like from the one side of the shielded portion toward the other side of the shielded portion in the sheet body and the landing body is prevented.
[0013]
Next, in a state where the shielded portion is airtightly shielded by the sheet body and the landing body, when the sheet body is going to bend in the pressing direction due to the pressure of the wind such as hot air, the landing body The sheet body is not easily pulled up due to the weight of the bar-shaped weight and the plate-shaped weights on both sides, but if the sheet body is bent in the pressing direction and pulled up due to the pressure of the wind such as hot air, the sheet The rod-shaped weight is pulled up at the lower end of the sheet body according to the amount of pulling-up of the body, and the hollow closed body and the plate-shaped weights on both sides are pulled up by the rod-shaped weight.
[0014]
At this time, the hollow closing body is deformed into a flat shape because the contact surface with the floor surface is enlarged, and the hollow closing body is bent into two folds up and down and is deformed into a flat shape. From the folded state, the folded portion located at the top of the two folds is pulled up to correspond to the amount of pulling up of the sheet body, that is, the folded portion located at the top of the two folds is pulled up to absorb the pulled up amount of the sheet body Then, the landing part which is located at the lower part of the two-fold of the hollow closure and landed on the floor surface is prevented from being pulled up, and is placed at the lower part of the two-fold of the hollow closure and landed on the floor. The landing portion that has been made is continuously landed on the floor surface.
[0015]
In addition, since the plate-shaped weights on both sides are largely opened and turned in the opposite directions, the plate-shaped weights on both sides are hollowed around the rod-shaped weight while being pulled up from the state in which they are greatly opened and turned. It is closed and rotated in the direction approaching each other along the floor surface while landing on the floor surface via the closing body, and corresponds to the amount of pulling up of the sheet body, and the plate-shaped weights on both sides continue on the floor surface. Continue to be implanted.
[0016]
Therefore, even when the sheet is lifted while being bent in the pressing direction due to the pressure of the wind caused by hot air or the like, the hollow closing member and the plate-shaped weights on both sides are respectively attached to the floor surface by the amount of pulling of the sheet. The closed state in which a gap is formed between the lower end portion of the sheet body and the floor surface by the hollow closing body and the plate-shaped weights on both sides to prevent the gap from being airtightly closed. Retained securely.
[0017]
According to a second aspect of the present invention, in the screen device of the first aspect, the sheet member has a hollow cylindrical portion through which a rod-shaped weight is inserted at a lower end portion, and the hollow cylindrical portion has an interval between both sides. Each of the plate-shaped weights has a plurality of annular projections projecting from the respective insertion holes into the hollow cylindrical portion and penetrating the rod-shaped weight.
[0018]
Then, each annular projection of the plate-shaped weight is inserted into each insertion hole of the hollow cylindrical portion at the lower end of the sheet body, and each annular projection of the plate-shaped weight projects into the hollow cylindrical portion, respectively. By inserting the rod-shaped weight into each of the annular protrusions protruding into the cylindrical portion and the hollow cylindrical portion, the plate-shaped weights can be easily attached to both sides of the lower end of the sheet member in a freely rotatable manner.
[0019]
The screen device according to claim 3 is the screen device according to claim 1 or 2, wherein the hollow closing member and the hollow cylindrical portion are respectively formed by folding a sheet body, and the hollow closing member is formed of the hollow cylindrical portion. And protruding downward along the lower end.
[0020]
Then, the hollow closing member and the hollow cylindrical portion are formed by folding the sheet body, respectively, so that the hollow closing member and the hollow cylindrical portion can be easily formed as a hollow closing member and a hollow cylindrical portion integrally with the lower end portion of the sheet member. The rod-shaped weight formed and inserted into the hollow cylindrical portion is sufficiently protected.
[0021]
According to a fourth aspect of the present invention, there is provided the screen device according to the first or second aspect, wherein the plate-shaped weight has an arc-shaped landing portion on the floor surface at a lower end portion of the plate-shaped weight. is there.
[0022]
The plate-shaped weight is opened and closed about the rod-shaped weight. At this time, the arc-shaped landing portion of the plate-shaped weight is smoothly opened and closed along the floor surface.
[0023]
According to a fifth aspect of the present invention, in the screen device according to any one of the first to third aspects, the sheet member is provided on both sides of the sheet member and located above the hollow cylindrical portion. At the time of landing on the floor surface, there are sheet pieces that spread toward opposite directions via a plate-shaped weight and land.
[0024]
Then, at the time of landing on the floor surface of the shielded portion, the sheet pieces on both sides are spread in the opposite directions via the plate-shaped weight and landed, so that the sheet pieces on both sides are The plate-shaped weight and the hollow closing body are respectively covered from both sides, and the respective insertion holes on both sides of the hollow cylindrical portion into which the respective annular projections of the plate-shaped weight are inserted are covered from both sides. Therefore, the space between the lower end portion of the sheet member and the floor surface of the shielded portion is more reliably hermetically closed.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0026]
Numeral 1 denotes left and right vertical guide rails which are vertically fixed to opposing side walls of the shielded portion 2, respectively. The opening is formed in a substantially U-shaped cross section. Although not shown, the insertion opening 3 is formed in each of the inner plate portions of the guide rail 1, and has a vertical guide piece formed to face an opening edge thereof. The shielded portion 2 refers to an opening of a building, for example, an entrance, an emergency exit, a passage, etc. of a factory or the like, and an opening of a location that needs to be shielded as a fire protection section for fire prevention and flame prevention.
[0027]
Also, upper ends of the left and right guide rails 1 are inserted and fixed to a ceiling wall portion 4 of the shielded portion 2, respectively, and the ceiling wall portion 4 has an insertion opening 3 for the left and right guide rails 1 and the shielded portion. A vertical guide passage 5 is formed in which a sheet body and a landing body, which will be described later, open and communicate with the lower surface of the second body 2 to move up and down. In addition, a box 6 is fixed to the ceiling wall portion 4 above the guide passage 5, and the box 6 has a left-right opening 7 communicating with the guide passage 5 at a lower end thereof. ing.
[0028]
A winding shaft 9 having a left-right winding drum 8 is rotatably mounted in the box 6. A rotating wheel for driving and rotating the winding shaft 9 is provided at one end of the winding shaft 9. 10 is fixed. A forward / reverse rotating motor 11 is fixed in the box 6, and a driving wheel 13 is fixed to an output shaft 12 of the motor 11 at a position facing the rotating wheel 10, and the driving wheel 13 and the rotating wheel 10 are fixed. An endless revolving body 14 is suspended between and. The motor 11 is automatically stopped at a predetermined number of rotations set in accordance with a landing position where a landing body, which will be described later, land on the floor surface 15 of the shielded portion 2. I have.
[0029]
Reference numeral 16 denotes a non-combustible sheet member as a vertically movable sheet member for shielding the shielded portion 2. The non-combustible sheet member 16 has an upper end fixed to the winding drum 8 so as to be rewound freely. Each of the non-combustible sheet members 16 has a hollow cylindrical portion 18 at a lower end portion thereof. It is configured to have.
[0030]
Further, the hollow cylindrical portion 18 has an insertion hole 19 whose both ends are opened along the lower end of the non-combustible sheet member 16, and the hollow cylindrical portion 18 has a double-sided portion (the shielded portion). 2 (front-to-rear direction in front view of FIG. 2) at predetermined intervals, each having a plurality of substantially rectangular insertion holes 20. The hollow cylindrical portion 18 has both ends at both edges of the insertion portion 17 of the non-combustible sheet member 16.
[0031]
Next, reference numeral 21 denotes a non-combustible landing body provided at the lower end of the non-combustible sheet member 16 and landed on the floor surface 15 of the shielded portion 2. The lower portion of the non-combustible sheet member 16 projects downward along the hollow cylindrical portion 18 at the lower end thereof, and when it is landed on the floor surface 15 of the shielded portion 2, it deforms into a flat shape when landing on the floor. A hollow closing member 22 for closing between a lower end portion of the non-combustible sheet member 16 and the floor surface 15, and an insertion hole 19 of the hollow cylindrical portion 18 formed along a lower end portion of the non-combustible sheet member 16; And the rod-shaped weights 23, which are rotatably provided on the rod-shaped weights 23 located on both sides of the hollow closing member 22, respectively, when the floor-shaped weights 23 land on the floor surface 15 of the shielded portion 2. A pair of front and rear plate-shaped weights 24 that open and rotate in the opposite directions spreading toward each other around the center, It is configured to include.
[0032]
When the hollow blocker 22 descends toward the floor surface 15 of the shielded portion 2, it hangs downward from the lower end of the hollow cylindrical portion 18, bends in two from the front-rear direction, and projects downward. It can be deformed into a flattened shape, and when it lands on the floor surface 15 of the shielded portion 2, it is folded in two from the up and down direction and is formed into a shape that can be deformed into a flat shape along the floor surface 15. I have. Thus, the hollow closing member 22 is formed by a bag-like body 25 opened at both side ends, and both side ends of the bag-like body 25 are vertically movable into the insertion openings 3 of the left and right guide rails 1. It is formed as an insertion portion 26 to be inserted.
[0033]
The rod-shaped weight 23 is formed by a metal round bar 27 having a length substantially equal to the length of the hollow cylindrical portion 18.
[0034]
The pair of plate-shaped weights 24 are formed in a horizontally-long rectangular shape having both end portions 28 which are not inserted into the insertion openings 3 of the left and right guide rails 1 and are opposed to and close to the opening surfaces of the insertion openings 3. A plurality of through holes 29 are formed at the upper ends of the pair of plate-shaped weights 24 so as to protrude into the insertion holes 19 from the respective insertion holes 20 on both sides of the hollow cylindrical portion 18 and pass through the rod-shaped weights 23. Are formed at the lower ends of the pair of plate-shaped weights 24, each having an arc-shaped landing portion 31 protruding toward the floor surface 15 to land on the floor surface 15. ing. The pair of plate-shaped weights 24 are each formed of a metal plate 32 such as stainless steel which has a high designability and a good appearance.
[0035]
The hollow cylindrical portion 18 is formed at the lower end of the non-combustible sheet 16 with the position where the hollow cylindrical portion 18 is formed on the non-combustible sheet 16 as the lower end of the non-combustible sheet 16. The hollow closure 22 is formed along the lower end of the hollow cylindrical portion 18 at the lower end of the non-combustible sheet 16.
[0036]
Thus, the hollow tubular portion 18 and the hollow closing member 22 fold the non-combustible sheet body 16 upward, and are located at the upper end 34 of the folded sheet portion 33 and below the upper end 34. Then, it is superposed on the non-combustible sheet body 16 except for the portion forming the hollow cylindrical portion 18, and the upper and lower superposed portions are fixed by means of sewing with non-combustible sewing thread or the like. Each is formed with openings at both ends. The non-combustible sheet body 16 is formed of non-combustible cloth made of, for example, glass cloth, silica cloth, or the like.
[0037]
Then, the respective annular projections 30 of the pair of plate-shaped weights 24 on both sides are inserted into the respective insertion holes 20 of the hollow cylindrical portion 18 at the lower end of the non-combustible sheet member 16. Each of the annular projections 30 projects into the hollow cylindrical portion 18, and the rod-shaped weight 23 is inserted into the hollow cylindrical portion 18 and the through hole 29 of each of the annular projections 30 projected into the hollow cylindrical portion 18. By doing so, a pair of plate-shaped weights 24 can be easily attached to both sides of the lower end of the non-combustible sheet member 16, and the pair of plate-shaped weights 24 can be freely opened and closed about the rod-shaped weight 23. Installed.
[0038]
Next, the operation of the above embodiment will be described.
[0039]
In a normal state such as a non-fire situation, the non-combustible sheet body 16 is wound up and lifted, and the non-combustible flooring body 21 at the lower end of the non-combustible sheet body 16 is attached to the ceiling wall 4 at the upper ends of the left and right guide rails 1. Is located in a stored state in the guide passage 5.
[0040]
At this time, the plate-shaped weights 24 on both sides of the non-combustible flooring body 21 are closed and rotated around the rod-shaped weights 23 by their own weight, and press the hollow closing body 22 from the front-rear direction to protrude downward. It is located in the guide passage 5 while being held in a deformed state.
[0041]
The lower end of the hollow closing body 22 in a state of being flattened and sandwiched is located above the lower end of the plate-shaped weight 24 on both sides, and the plate-shaped weight 24 on both sides is a lower end. In this case, the lower end of the hollow closing body 22 is hardly seen by the plate-shaped weights 24 on both sides, and the lower ends of the plate-shaped weights 24 on both sides are formed. The landing portion 31 is located on the lower surface of the guide passage 5 in a state where the lower surface of the guide passage 5 of the ceiling wall portion 4 is closed by the landing portion 31 of the section.
[0042]
Therefore, when the non-combustible flooring body 21 is stored in the guide passage 5 during a normal time such as a non-fire situation, the lower end of the hollow block 22 is hardly visible and the lower surface of the guide passage 5 is closed. By forming the plate-shaped weights 24 on both sides with a material having a high designability such as stainless steel, the appearance is further improved, and the unsightly appearance of the lower surface of the guide passage 5 is reduced. The appearance is maintained as a passage for people.
[0043]
Next, when the shielded portion 2 is shielded, for example, when the motor 11 is operated by a fire signal at the time of a fire that shields the shielded portion 2, the output from the motor 11 causes the winding shaft 9 to move the non-combustible sheet member. The non-combustible sheet 16 is sequentially rewound from the winding drum 8 of the winding shaft 9, and the non-combustible landing body 21 at the lower end of the non-combustible sheet 16 is moved to the ceiling. It is lowered from the guide passage 5 of the wall 4.
[0044]
The non-combustible sheet body 16 includes both ends of the hollow cylindrical portion 18 having both the insertion portions 17 of the non-combustible sheet body 16 and the rod-shaped weight 23 of the non-combustible landing body 21 and both ends of the hollow closed body 22. The two insertion portions 26 are respectively guided by the insertion openings 3 of the left and right guide rails 1 and are lowered, and the rod-shaped weight 23 and both surface portions of the non-combustible landing body 21 provided at the lower end of the non-combustible sheet body 16 Is smoothly and quickly lowered by the weight of the plate-shaped weight 24.
[0045]
At this time, the non-combustible landing body 21 remains housed in the guide passage 5 of the ceiling wall 4, that is, the plate-shaped weights 24 on both sides of the hollow closing body 22 of the non-combustible landing body 21 are owing to their own weight. It is closed and pivoted around the rod-shaped weight 23, and is lowered in a state of being hung with the hollow closing body 22 sandwiched from both sides.
[0046]
Further, when the non-combustible sheet body 16 is lowered, the hollow closing body 22 and the pair of plate-shaped weights 24 of the non-combustible landing body 21 land on the floor surface 15 of the shielded part 2 and the non-combustible landing body 21 Is lowered to a predetermined position, and the motor 11 rotates at a predetermined rotation number and stops.
[0047]
That is, the lower end of the plate-shaped weight 24 and the lower end of the hollow block 22 on both sides of the non-combustible flooring body 21 are landed on the floor surface 15 when the non-combustible sheet body 16 descends. When the body 16 is lowered, the weight of the bar-shaped weight 23 of the non-combustible flooring body 21 presses the hollow closing body 22 and the plate-shaped weight 24 on both sides from above.
[0048]
Then, the hollow closing body 22 projects in the opposite direction to each other, enlarges the contact surface with the floor surface 15, is folded up and down into two folds, and is landed in a flat deformed state. The body 22 is folded into two parts: a flooring plate portion 22a which is deformed into a plate shape on the floor surface 15 and is placed on the floor surface 15; and a superposed plate portion 22b which is deformed into a plate shape and folded on the flooring portion 22a. The floor is deformed in a flat shape and is landed, and the plate-shaped weights 24 on both sides are spread on the floor 15 with the bar-shaped weights 23 being centered on the floor 15 in the opposite directions. At the same time as the opening rotation, the motor 11 rotates at a set predetermined number of rotations and stops.
[0049]
At this time, the plate-shaped weights 24 on both sides have an arc-shaped landing portion 31 that is placed on the floor surface 15 at the lower end of the plate-shaped weight 24, so that the plate-shaped weights 24 on both sides are formed in an arc-shaped. Are smoothly opened and rotated in the opposite directions which spread along the floor surface 15 at the landing portion 31 of the vehicle. Then, the plate-shaped weights 24 on both sides are greatly overlapped on the overlapped plate portion 22b on the upper part of the hollow closure 22 which is folded in two while the arc-shaped landing portion 31 is placed on the floor surface 15. It is pivoted open.
[0050]
Therefore, the gap between the lower end portion of the non-combustible sheet member 16 and the floor surface 15 is reliably airtightly closed by the hollow closing member 22 that has been deformed into a flat shape and has landed on the floor surface 15. The lower end portion of the non-combustible sheet body 16 and the floor surface 15 are positioned by the plate-shaped weights 21 of the both sides positioned on the both surface portions and greatly spread and rotated in opposite directions and landed on the floor surface 15. The gap is more reliably hermetically closed.
[0051]
Then, the hollow obturator 22 deformed into a flat shape and landed and the plate-shaped weights 24 on both sides which are spread and rotated greatly in the opposite directions to each other and landed are respectively separated from above by the weight of the rod-shaped weight 23. By being pressed, the occurrence of a gap between the lower end portion of the non-combustible sheet member 16 and the floor surface 15 through which air such as hot air flows in and out is prevented. In this way, the incombustible sheet body 16 and the incombustible landing body 21 prevent the flow of hot air or the like from flowing from one side of the shielded portion 2 to the other side of the shielded portion 2, thereby preventing smoke such as hot air from flowing. Diffusion and spread of fire are prevented.
[0052]
Next, in a state where the shielded portion 2 is airtightly shielded by the non-combustible sheet member 16 and the non-combustible landing member 21, the non-combustible sheet member 16 is moved in the pressing direction by pressure generated by wind such as hot air. When the non-combustible sheet body 16 tries to bend or thermally contracts due to hot air or the like, the weight of the bar-shaped weight 23 of the non-combustible landing body 21 and the plate-shaped weight 24 on both sides makes the non-combustible sheet body 16 easily. The non-flammable sheet body 16 is not lifted up but is pulled up by bending the non-combustible sheet body 16 in the pressing direction due to the pressure of the hot air or the like, or when the non-combustible sheet body 16 is pulled up by the heat shrinkage by the hot air or the like. The rod-shaped weight 23 is raised at the lower end of the non-combustible sheet 16 in accordance with the amount of lifting of the sheet 16, and the hollow closed body 22 and the plate-shaped weight 24 on both sides are raised by the rod-shaped weight 23.
[0053]
At this time, since the hollow closing body 22 has a large contact surface with the floor surface 15 and is folded in the up-and-down direction to be folded in two, and is landed in a flat deformed state, that is, the hollow closing body 22 A flooring plate portion 22a deformed into a plate shape on the floor surface 15 and landed thereon, and an overlapped plate portion 22b deformed into a plate shape on the flooring portion 22a and folded over are folded in two and flattened. Since the floor is deformed and the landing is performed, the overlapped plate portion 22b located at the upper half of the folded state is pulled up from the landing plate portion 22a from the state in which the hollow closed body 22 is deformed in a flat shape, and the non-combustible sheet It corresponds to the amount of pulling of the body 16.
[0054]
That is, while the landing plate portion 22a is still on the floor surface 15, the overlapped plate portion 22b is pulled up from the landing plate portion 22a to absorb the amount of pulling up of the non-combustible sheet member 16, and The landing plate portion 22a, which is located at the lower part of the fold and which has landed on the floor surface 15, is prevented from being pulled up, and the landing plate portion which is located at the lower part of the fold of the hollow closed body and has landed on the floor surface 15 is prevented. 22a continues to land on the floor surface 15.
[0055]
Further, since the plate-shaped weights 24 on both sides are greatly expanded and turned in the opposite directions, the bar-shaped weights 24 are lifted from the state where the plate-shaped weights 24 on both sides are greatly expanded and turned. With the floor 23 being centered on the floor 15 via the hollow closing member 22, it is closed and rotated along the floor 15 in a direction approaching each other to correspond to the pulling amount of the nonflammable sheet body 16. The plate-shaped weights 24 on both sides continue to land on the floor surface 15.
[0056]
At this time, the plate-shaped weights 24 on both sides have an arc-shaped landing portion 31 that is placed on the floor surface 15 at the lower end of the plate-shaped weight 24, so that the plate-shaped weights 24 on both sides are rod-shaped weights. At the arc-shaped landing section 31 around the center 23, the robot is smoothly closed and rotated along the floor surface 15 in directions approaching each other.
[0057]
Therefore, even if the non-combustible sheet member 16 is flexed and pulled up in the pressing direction due to the pressure of the hot air or the like, or the non-combustible sheet member 16 is thermally contracted by the hot air or the like and pulled up, The hollow closing body 22 and the plate-shaped weights 24 on both sides correspond to the amount of pulling up of the non-conductive sheet body 16 while the hollow closed body 22 and the plate-shaped weights 24 on both sides are incombustible. A gap between the lower end portion of the sheet body 16 and the floor surface 15 is prevented, and the closed state in which the gap is airtightly closed is reliably maintained.
[0058]
Next, in the embodiment shown in FIGS. 8 and 9, in the above-described embodiment, the non-combustible sheet member 16 is located above the hollow cylindrical portion 18 and the shielded portions are provided on both sides of the non-combustible sheet member 16. A non-combustible sheet piece 35 is provided on the second floor surface 15 as a sheet piece that expands in the opposite direction to the floor via the plate-shaped weights 24 on both sides during landing.
[0059]
The non-combustible sheet pieces 35 on both sides are formed in a horizontally long rectangular shape along the non-combustible sheet body 16, and the upper end thereof is provided with a non-combustible sewing thread at a mounting position on both sides of the non-combustible sheet body 16. The lower end portions are respectively formed as landing portions 36 that land on the floor surface 15 of the shielded portion 2.
[0060]
The floors 36 of the non-combustible sheet pieces 35 on both sides are opposite to the arc-shaped floors 31 of the plate-shaped weights 24 on both sides when housed in the guide passage 5 of the ceiling wall 4. Is supported at a slightly expanded state by a protruding end portion 37 protruding toward the front end, and a protruding end portion of the plate-shaped weight 24 on both sides at the landing portion 36 of the non-combustible sheet piece 35 on both sides. The space between 37 and the guide passage 5 is further closed, so that the lower surface of the guide passage 5 has a better appearance, and when landing on the floor surface 15 of the shielded portion 2, it is guided by the protruding end portion 37 and becomes flat on the floor surface 15. Along the opposite directions.
[0061]
The non-combustible sheet pieces 35 on both sides are formed of the same non-combustible material as the non-combustible sheet body 16. Other configurations are the same as those of the above-described embodiment, and therefore, the same components as those of the above-described embodiment are denoted by the same reference numerals used in the above-described embodiment, and the description thereof is omitted.
[0062]
With such a configuration, when the shielded portion 2 is shielded, the hollow closing member 22 and the plate-shaped weights 24 on both sides operate in the same manner as in the above-described embodiment, so that the hollow closed body 22 and the floor weight 15 of the shielded portion 2 are moved. At this time, the landing portions 36 of the non-combustible sheet pieces 35 on both sides are guided by the protruding ends 37 of the plate-shaped weights 24 on both sides, and land on the floor surface 15 of the shielded portion 2. At the same time, the plate-shaped weights 24 on both sides are expanded and moved in the opposite directions to each other via the plate-shaped weights 24 on both sides.
[0063]
Then, the plate-shaped weights 24 on both sides and the flattened and closed hollow closed body 22 deformed in a flat shape are covered with the non-combustible sheet pieces 35 on both sides, respectively. Each of the insertion holes 20 on both sides of the hollow cylindrical portion 18 into which the respective annular projections 30 of the plate-shaped weight 24 on both sides are inserted is covered from both sides. Therefore, the space between the lower end portion of the noncombustible sheet member 16 and the floor surface 15 of the shielded portion 2 is more reliably hermetically closed.
[0064]
In each of the above embodiments, a fire-resistant screen device using the non-combustible sheet member 16 and the non-combustible flooring member 21 and a fire-resistant screen using the non-combustible sheet member 16, the non-combustible flooring member 21, and the non-combustible sheet piece 35 Although the device has been described, the invention is not limited to this, and a screen device for a partition that blocks entrances and exits of a building, for example, a factory, etc. to prevent the invasion of wind and dust, etc., or a partition that maintains the temperature in the building May be used as a screen device. In this case, the sheet body 16, the landing body 21, and the sheet piece 35 do not need to be particularly nonflammable.
[0065]
Further, in each of the above embodiments, the case where the shielded portion 2 is shielded by the non-combustible sheet body 16 has been described. However, the present invention is not limited to this, and the shielded portion 2 may be, for example, a plurality of strip-shaped slats. And a plurality of panel materials in the form of strips are arranged side by side, and a non-combustible shutter curtain formed in a series and a non-combustible sheet body 16 provided continuously at the lower end of the shutter curtain form a sheet. May be shielded by a series of non-combustible sheet members. Also at this time, a non-combustible flooring body 21 is provided at the lower end of the non-combustible sheet body 16 to land on the floor surface 15 of the shielded portion 2 as in the above-described embodiments.
[0066]
Also in this case, the non-combustible sheet member 16, the non-combustible shutter curtain, and the non-combustible sheet piece 35 are used as a partitioning screen device for shielding entrances and exits of factories and the like to prevent entry of wind, dust and the like into factories and the like. Or, it may be used as a partitioning screen device for maintaining the temperature in a building, and in this case, the sheet body 16, the shutter curtain, and the sheet piece 35 do not need to be particularly nonflammable.
[0067]
Thus, in the case where the member for shielding the shielded portion 2 shields a predetermined position in the building as a fire protection section to prevent the spread and spread of smoke in the event of a fire, the sheet member 16, the shutter curtain and the sheet piece may be used. If the purpose is to form a non-combustible material and shield the entrances and exits of factories, etc. to prevent the intrusion of wind and dust into the factories, etc. The sheet member 16, the shutter curtain, and the sheet piece may be formed of a highly airtight material without being formed of a nonflammable material.
[0068]
【The invention's effect】
According to the first aspect of the present invention, the landing body projects downward along the lower end of the sheet body, deforms into a flat shape when landing on the floor surface of the shielded part, and landed on the floor. A hollow closing body for closing between the lower end of the body and the floor surface, a rod-shaped weight provided along the lower end of the sheet body, and the rod-shaped weight located on both sides of the hollow closing body. Each has a plate-shaped weight that is rotatably provided and that opens and rotates in the opposite direction to spread around the rod-shaped weight and spreads around the bar-shaped weight when landing on the floor surface of the shielded portion. Even if this sheet body is fanned by the wind of hot air or the like and pressed by the pressure in a state where the shielded portion is shielded, the wind such as hot air flows between the lower end of the sheet body and the floor surface at the landing body. It is possible to prevent the occurrence of gaps for inflow and outflow, and to reliably maintain the closed state in which the gap between them is hermetically sealed. Therefore, it can be held sufficiently airtight when the shielding of the shielding unit.
[0069]
According to the second aspect of the invention, in addition to the effects of the first aspect, each annular projection of the plate-shaped weight is inserted into each insertion hole of the hollow cylindrical portion at the lower end of the sheet member. Each annular projection of the weight is projected into the hollow cylindrical portion, and the rod-shaped weight is inserted into the hollow cylindrical portion and each annular projection protruded into the hollow cylindrical portion, thereby forming both surfaces of the lower end portion of the sheet body. Each of the plate-shaped weights can be easily attached rotatably to each other, and the operation of assembling the plate-shaped weight to the sheet body is easy, and the rod-shaped weight is also used as the rotation center axis of the plate-shaped weight. The configuration is small and the configuration is simple.
[0070]
According to the third aspect of the invention, in addition to the effects of the first or second aspect, the hollow closing member and the hollow cylindrical portion are formed by folding the sheet body, respectively. The hollow closed body and the hollow cylindrical portion can be easily formed integrally with the lower end of the body, respectively, and the rod-shaped weight inserted into the hollow cylindrical portion can be sufficiently protected.
[0071]
According to the invention of claim 4, in addition to the effect of the invention of claim 1 or 2, the plate-shaped weight can be opened and closed about the rod-shaped weight. Since the landing portion is provided, the landing portion smoothly moves along the floor surface, so that the plate-shaped weight can be smoothly opened and closed.
[0072]
According to the invention of claim 5, in addition to the effect of any of the inventions of claims 1 to 3, the sheet pieces on both sides are placed in opposite directions via the plate-shaped weight when landing on the floor surface of the shielded part. The sheet weights on both sides cover the plate-shaped weight and the hollow blocker on both sides, respectively, and the hollow into which each annular projection of the plate-shaped weight is inserted. Each of the insertion holes on both sides of the cylindrical portion can be covered from both sides, so that the space between the lower end of the sheet member and the floor of the shielded portion can be more reliably airtightly closed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a part of a screen device showing an embodiment of the present invention.
FIG. 2 is a front view of the same screen device.
FIG. 3 is a side view of the same.
FIG. 4 is a cross-sectional view of a state where a landing body is accommodated in the ceiling wall portion.
FIG. 5 is a cross-sectional view of the landing body showing a state of being lowered on the floor surface.
FIG. 6 is a cross-sectional view of the landing body showing a state in which a gap between a lower end portion of the sheet body and a floor surface is closed.
FIG. 7 is a cross-sectional view of the landing body showing a state where the sheet body is slightly lifted up by being lifted or the like.
FIG. 8 is a cross-sectional view of a landing body showing a state in which a space between a lower end portion of a sheet body and a floor surface is closed according to another embodiment.
FIG. 9 is a cross-sectional view of a state where a landing body is accommodated in the ceiling wall portion.
FIG. 10 is a front view of a part of a refractory screen device showing the prior art.
FIG. 11 is a side view of the same.
[Explanation of symbols]
1 Guide rail
2 Covered part
3 insertion slot
15 floor
16 sheet body
18 hollow cylindrical part
20 insertion hole
21 Landing body
22 Hollow closure
23 rod weight
24 plate weight
30 annular protrusion
31 Landing
35 sheet pieces

Claims

A guide rail that is fixed to both sides of the shielded portion and faces each other and has an insertion opening formed in the up and down direction, and both ends in the width direction are inserted into the insertion openings of the guide rails on both sides to move up and down. A sheet body that is freely provided and shields the shielded part when descending, and a flooring body that is provided at a lower end of the sheet body and land on a floor surface of the shielded part,
The landing body is
Protruding downward along the lower end of the sheet body, it is deformed into a flat shape when landing on the floor surface of the shielded part and lands, and the space between the lower end portion of the sheet body and the floor surface is formed. A hollow closing body to close,
A rod-shaped weight provided along the lower end of the sheet body,
The rod-shaped weight is rotatably provided on each of the rod-shaped weights located on both sides of the hollow closed body, and opens and pivots in opposite directions to spread around the rod-shaped weight when they land on the floor surface of the shielded part. And a plate-shaped weight to land on the screen device,
The hollow closing body has an insertion portion that is inserted into the insertion opening of the guide rail so as to be able to move up and down at both end portions, and when descending toward the floor surface of the shielded portion, downward from the lower end portion of the sheet body. A screen device, wherein the screen device descends in a state where it is folded in two from the front and rear direction and is deformed into a flat shape protruding downward .

The sheet body has a hollow cylindrical portion at the lower end portion through which the rod-shaped weight is inserted, and the hollow cylindrical portion has a plurality of insertion holes at intervals on both sides thereof, and the plate-shaped weight is Each having a plurality of annular projections projecting from the insertion hole into the hollow cylindrical portion and penetrating the rod-shaped weight,
The screen device according to claim 1, wherein:

The hollow closing member and the hollow cylindrical portion are formed by folding the sheet body, respectively, and the hollow closing member is protruded downward along the lower end of the hollow cylindrical portion.
3. The screen device according to claim 1, wherein:

The plate-shaped weight has an arc-shaped landing portion to be placed on the floor surface at a lower end portion of the plate-shaped weight,
3. The screen device according to claim 1, wherein:

The sheet body is located above the hollow cylindrical portion and is provided on both sides of the sheet body, and spreads in opposite directions via a plate-shaped weight when landing on the floor surface of the shielded portion. Each having a sheet piece to be
The screen device according to claim 1, wherein: