JP3730572B2

JP3730572B2 - Eave back ventilation member

Info

Publication number: JP3730572B2
Application number: JP2002003065A
Authority: JP
Inventors: 浩二佐藤; 辰次金田; 貴浩和泉; 康光小野崎; 將揮川元
Original assignee: Nihon Kagaku Sangyo Co Ltd; Sekisui House Ltd
Current assignee: Nihon Kagaku Sangyo Co Ltd; Sekisui House Ltd
Priority date: 2002-01-10
Filing date: 2002-01-10
Publication date: 2006-01-05
Anticipated expiration: 2022-01-10
Also published as: JP2003206577A

Description

【０００１】
【発明の属する技術分野】
本発明は小屋裏に通気させるために天井部の壁、鼻隠し、天井板等の所謂天井に取付けられる通気部材に係り、特に錆の発生が少なく二次加工が容易で、かつ防火性を具備した軒裏通気部材に関するものである。
【０００２】
【従来の技術】
従来、建物に於いて、建物寿命の向上を図る為に天井に軒裏通気部材を設置し、小屋裏に通気を図る工法を採用している例がある。
【０００３】
また、このように通気部材を介して小屋裏に通気を図った場合には、火災時にこの通気材を通って火災や熱風等が簡単に侵入する問題があった。従って、従来も例えば、特開平６−７３８２８号公報（第１公知技術)、特開平６−２６４５５３号公報（第２公知技術)、特開平７−４２２９９号公報（第３公知技術)、特開平９−１０５２００号公報（第４公知技術）等に例示するように、天井に取付けられる軒裏通気部材内に形成された換気通路内に不燃性体積膨張材を装着して構成した技術が開発されている。
【０００４】
【発明が解決しようとする課題】
然るに、前述の第１公知技術乃至第４公知技術に於いては、いずれも換気通路内に不燃性体積膨張材が装着されているので、火災時に火災や熱風が該換気通路内に侵入し始めると、高温度によって不燃性体積膨張材が膨張して換気通路を閉鎖するので、火災が小屋裏に侵入することを防ぐことが出来る効果を有していたが、しかし、これ等の公知に於いては、夫々後述のような問題があった。
【０００５】
即ち、前記第１公知技術乃至第２公知技術に係る技術に於いては、軒裏通気部材を構成する材料が、火災時に熱気や火災に充分に耐える高温溶融点を持った材料、例えばスチール、ステンレス等の材料で製作する必要があった。
【０００６】
しかし、軒裏通気部材をスチール、ステンレス等の材料で形成した場合には、火災時に熱気、火災等に耐えることは可能であるが、軒裏通気部材に防虫、防鳥を可能とするための細かいスリット穴よりなる換気穴を穿設した場合には、このスリット穴の小口部分から錆が発生する問題があった。
【０００７】
また、軒裏通気部材をスチール、ステンレス等の高融点材料で形成した場合には、工場或は建築現場で軒裏通気部材を所定寸法に切断する等の二次加工をする場合には、二次加工が難しい等の問題があった。
【０００８】
さらに、第２公知技術の如く、天井板の小口面に不燃性体積膨張材を装着して構成する構造も知られているが、この技術に於いては、天井板の小口面に取付けた不燃性体積膨張材が外部に露出してしまい、体裁が悪く意匠上好ましくない問題があった。また、この問題を解決するために、天井板の小口面の周りに見切り材を装着する技術も公知であるが、この場合には別に用意した見切り材を取付けなければならず、材料費と施工の手間がかかり、コスト高になる問題があった。
【０００９】
かつ、前述の問題点を改善するために、前述の第４公知技術が開発されている。この第４公知技術は、前記スチール、ステンレス等の材料で形成した軒裏通気部材の欠点を改善するために、アルミニウム材を用いて軒裏通気部材を形成した技術である。
【００１０】
しかし、この第４公知技術に於いては、アルミニウム材を用いて軒裏通気部材を形成するので、錆の問題及び二次加工の問題は解決することは出来るが、アルミニウム材は、比較的低温でも軒裏通気部材が溶解して型がくずれるので、１．軒裏通気部材の一部に放熱部を設けなければならないので材料が無駄になりコスト高になる、２．軒裏通気部材の設計が困難になる、３．前述のような放熱部が突出しているので、建築物等の納まりが複雑になる等の問題があった。
【００１１】
本発明に係る軒裏通気部材は、前述の従来の多くの問題点に鑑み開発された全く新しい技術であって、特に軒裏通気部材を二次加工が容易で、かつ錆の発生の問題のないアルミニウム材或はプラスチック材で形成し、かつ火災時に火炎や熱気で軒裏通気部材が変形した場合にも、この軒裏通気部材に取付けられていた不燃性体積膨張材を軒裏通気部材の立上り部の両側に膨張させることによって、天井に設けた小屋裏に通気させるための通気路を不燃性体積膨張材で完全に閉鎖して火炎や熱気が小屋裏に侵入することを防止するようにした全く新しい軒裏通気部材の技術を提供するものである。
【００１２】
【課題を解決するための手段】
本発明に係る軒裏通気部材は、前述の問題点を根本的に改善した技術であって、その第１発明の要旨は、小屋裏に通気させるために天井に取付けられている通気部材であって、該通気部材の立上り部の両面に不燃性体積膨張材が取付けられて構成されていることを特徴とした軒裏通気部材である。
【００１３】
前述の第１発明に於いては、通気部材の立上り部の両面に不燃性体積膨張材が取付けて構成されているので、火災時には通気部材の立上り部の両側に不燃性体積膨張材を膨張させることが出来る。従って、火災時の高温度によって通気部材が溶融して変形或は落下した場合にも、通気部材の立上り部の両側に設けられた不燃性体積膨張材が天井に設けられた通気用の通路を完全に閉鎖するので、火炎、熱気等が小屋裏に侵入することを防止出来る。
【００１４】
本発明に係る軒裏通気部材の第２発明の要旨は、前記通気部材が錆の発生の少なく、かつ二次加工が容易なアルミニウム材或はプラスチック材で構成されていることを特徴とした第１発明の軒裏通気部材である。
【００１５】
前述の第２発明に於いては、通気部材をアルミニウム材或はプラスチック材で構成したので、通気部材の所定位置に防虫、防鳥等を目的とした細かいスリット穴を穿設した場合にも、スリット穴の小口部分に錆が発生することを防止出来る。かつ通気部材をアルミニウム材或はプラスチック材で構成した場合には、現場等に於ける二次加工を容易にすることが出来る。
【００１６】
本発明に係る軒裏通気部材の第３発明の要旨は、前記通気部材の立上り部の片面或は両面の所定位置に突起部を設けて構成したことを特徴とした第１発明或は第２発明の軒裏通気部材。
【００１７】
前述の第３発明に於いては、通気部材の立上り部の片面或は両面の所定位置に突起部を設けて構成したので、通気部材が火災時の高温度で溶融して、特に下部水平部等が変形或は落下しても、膨張した不燃性体積膨張材は、この突起部によって支持されるので、落下する心配がない。
【００１８】
【発明の実施の形態】
図により本発明に係る軒裏通気部材の一実施例を具体的に説明すると、図１は本発明に係る第１実施例の軒裏通気部材の要部を示す斜視図、図２は図１の軒裏通気部材を天井に取付けた状態の縦断面図、図３は火災時に不燃性体積膨張材が発泡した状態の縦断面図、図４は図１の軒裏通気部材を傾斜のある天井に取付けた状態の縦断面図である。
【００１９】
図５は本発明に係る第２実施例の軒裏通気部材の要部を示す斜視図、図６は図５の軒裏通気部材を天井に取付けた状態の縦断面図、図７は図５の軒裏通気部材を傾斜のある天井に取付けた状態の縦断面図である。
【００２０】
図８は本発明に係る第３実施例の軒裏通気部材の要部を示す斜視断面図、図９は第３実施例の他例の軒裏通気部材の要部を示す斜視断面図である。
【００２１】
図１０は本発明に係る第４実施例の軒裏通気部材の要部を示す斜視断面図、図１１は第４実施例の他例の軒裏通気部材の要部を示す斜視断面図である。
【００２２】
図１２は本発明に係る第５実施例の軒裏通気部材の要部を示す斜視図、図１３は図１２の軒裏通気部材を天井に取付けた状態の縦断面図、図１４は図１３に於ける不燃性体積膨張材が膨張した状態の縦断面図、図１５は図１２の軒裏通気部材を傾斜した天井に取付けた状態の縦断面図である。
【００２３】
図１６は本発明の第６実施例の軒裏通気部材の縦断面図、図１７は図１６の状態の不燃性体積膨張材が発泡した状態の説明図である。
【００２４】
図１乃至図４により本発明に係る第１実施例の軒裏通気部材を説明すると次の通りである。１はアルミニウム材を用いて構成された通気部材であって、上部水平部２と立上り部３と下部水平部４とによって断面がほぼコ字状に形成されている。
【００２５】
上部水平部２には複数の換気穴５が穿設されている。下部水平部４にはスリット状の複数の換気穴６が穿設され、かつその先端縁は上方に湾曲されて水切片４ｄを形成している。前記立上り部３はイナズマ状にジグザグ折りされており、かつその内面及び外面に夫々不燃性体積膨張材７が取付けられている。この立上り部３はジグザグ折りせずに、単なる平面で形成することも可能である。
【００２６】
前記不燃性体積膨張材７は、膨張性グラファイト系の防炎、防煙用のシール材で形成されており、熱風温度が１５０〜１７０℃で約１０倍に膨張する性質を有している。本発明の前述の通気部材１はその内部に換気通路８が形成されており、下部の換気穴６より換気通路８に吸入された空気が上部の換気穴５に通気し得るように構成されている。
【００２７】
前述の本発明に係る通気部材１を天井に取付けるに当たっては、例えば図２或は図４に示す如く、軒天井板９と外壁１０との間に形成された小屋裏１１への通気用の通路１２内に挿入した後で、通気部材１の上部水平部２をネジ１３で軒天井下地１４に固定することによって取付けることが出来る。
【００２８】
前記図２の場合は軒天井板９が水平になっている例であり、図４の場合は軒天井板９が傾斜している例である。従って、図２の場合には、通気部材１の立上り部３のほぼ全体を外壁１０に当接することが出来、図４の場合には、通気部材１の立上り部３の下部のみを外壁１０に当接することが出来る。
【００２９】
本発明に係る前述の第１実施例に於いて火災が発生した際には、図３に例示するように、小屋裏１１への通気用の通路１２内に火炎や熱風が侵入して温度が１５０〜１７０℃に達すると、通気部材１の立上り部３の両面に取付けられた不燃性体積膨張材７が直ちに膨張して、通路１２を全面的に閉鎖するので、火炎や熱風が小屋裏１１に侵入することを完全に防止することが出来る。
【００３０】
本発明の第１実施例の場合には、前述のように通気部材１の立上り部３の両面に設けた不燃性体積膨張材７が夫々膨張するので、アルミニウム材で構成した通気部材１が図３に例示したように高温度で溶融して形状がくずれても、両側の不燃性体積膨張材７で通路１２を全面的に閉鎖するので、何ら影響なく火炎、熱風等が通路１２内に侵入することを防止出来る。
【００３１】
従って、前述の第１実施例を実施した場合には、二次加工が容易で、かつ錆の発生する心配がないアルミニウム材を用いて通気部材１を構成することが出来る。また、前述の従来の第４公知技術のように、通気部材１の所定位置に熱を放出するための特殊な加工を施す必要もない。さらに、前述の実施例では通気部材１をアルミニウム材で構成したが、二次加工が容易で、かつ錆の発生の心配のないプラスチック材で構成することも可能である。
【００３２】
図５乃至図７により本発明に係る第２実施例の軒裏通気部材を説明すると次の通りである。この第２実施例の軒裏通気部材と前述の第１実施例の軒裏通気部材との差異は、通気部材の内部に前述の換気通路８が有るか無いかの違いである。
【００３３】
即ち、第２実施例の場合の通気部材１５には、換気通路が存在せず、この場合の通気部材１５は、特に図６及び図７によって明らかな如く、巾広の通気用の通路１２のほぼ中央部に取付けられて使用されている。従って、通気部材１５の立上り部１５ｂと外壁１０との間に換気通路１６が形成されるように構成されている。この通気部材１５もアルミニウム材或はプラスチック材で構成されている。
【００３４】
前述の第２実施例の場合にも、第１実施例と同様に、通気部材１５を通路１２の中に取付けることによって使用することが出来る。そして、火災が発生した場合には、立上り部１５ｂの両面に夫々取付けられた不燃性体積膨張材７が膨張して通路１２を閉鎖するので、火災や熱風が通路１２を通って小屋裏に侵入することを防止出来る。
【００３５】
図８及び図９に示す第３実施例の場合には、通気部材１７、１８を、前述の通気部材１、１５のように断面コ字状に折曲げることなく、その通気部材１７、１８の先端部をほぼＬ状或はＴ状に折曲げて構成した場合の実施例である。これ等の通気部材１７、１８もアルミニウム材或はプラスチック材で構成されている。
【００３６】
この第３実施例の通気部材１７、１８の場合にも、その立上がり部１７ａ、１８ａの両面に不燃性体積膨張材７を取付けており、かつ下部水平部１７ｂ、１８ｂのみにスリット状の換気穴６が穿設されて構成されている。図中１９は鼻隠し板、２０は鼻隠し下地、２１は屋根である。
【００３７】
図１０及び図１１に示す第４実施例は、いずれも軒天井板９の中間部に通気用の通路１２を形成し、この通路１２内にアルミニウム材或はプラスチック材で構成された通気部材２２、２３を挿入して取付けることによって構成されている。該通気部材２２は前記通気部材１７とほぼ同じ形状を有しており、通気部材２３は、断面形状がほぼ逆Ｕ字形に形成されており、その通気部材２３の天面部２３ａにスリット状の換気穴６が穿設されている。
【００３８】
図１２乃至図１５に示す第５実施例は、前述の第１実施例乃至第４実施例と基本的構成を異にする発明である。即ち、第５実施例の場合には、前述の実施例のように、通気部材１、１５、１７、１８、２２、２３のように、その立上り部の両面に不燃性体積膨張材７を夫々取付けて構成するのではなく、通気部材の片面のみに不燃性体積膨張材７を取付けて構成し、この不燃性体積膨張材７が加熱された時に、該立上り部の両面側に膨張させて、通気用の通路１２を閉鎖することが出来るようにした構造である。
【００３９】
第５実施例を具体的に説明すると、第５実施例の通気部材２４は、その全体の構成が前記第１実施例の通気部材１とほぼ同じ構造を有しているが、その立上り部２４ａに比較的径の大きい複数の穴が並列して穿設されており、かつ該立上り部２４ａの片面のみに不燃性体積膨張材７が取付けられて構成されている。
【００４０】
前述のように構成された通気部材２４を使用した場合には、火炎、熱気等が通路１２内に侵入して不燃性体積膨張材７が膨張し始めると、不燃性体積膨張材７は取付けられた立上り部２４ａの片面のみならず、前記複数の穴２５を介して立上り部２４ａの反対面側にも膨張して突出するので、これによって、通路１２を不燃性体積膨張材７によって完全に閉鎖し、小屋裏１１に火炎、熱気等が侵入することを防止することが出来る。
【００４１】
従って、通気部材２４を二次加工が容易で、かつ錆の発生の心配のないアルミニウム材或はプラスチック材で構成した場合にも、この通気部材２４が、例えば図１４に示す如く、高温度で溶融して形状をくずした場合にも、膨張された不燃性体積膨張材７で通路１２を安定した状態で完全に閉鎖することが出来る。
【００４２】
本発明に於いては、図１６(ａ）、(ｂ）及び図１７(ａ）、(ｂ）に示す如く、通気部材１の立上り部３の両面の所定位置に突起部２５を起立突設することも可能である。この場合には、火災時に通気部材１の立上り部３及び下部水平部４が溶融して変形或は落下した場合にも、膨張した不燃性体積膨張材７が、この突起部２５によって支持されるので、通気部材１より落下する心配がない。この突起部２５は、片面に設けること（例えば第５実施例の場合）も可能である。
【００４３】
【発明の効果】
本発明に於いては、通気部材の立上り部の両面に不燃性体積膨張材が取付けて構成されているので、火災時には通気部材の立上り部の両側に不燃性体積膨張材を膨張させることが出来る。従って、火災時の高温度によって通気部材が溶融して変形或は落下した場合にも、通気部材の立上り部の両側に設けられた不燃性体積膨張材が天井に設けられた通気用の通路を完全に閉鎖するので、火炎、熱気等が小屋裏に侵入することを防止することが出来る効果を有している。また、通気部材の一部が溶融して落下した場合には、通気部材の受熱面積を著しく小さくすることが出来る効果を有している。
【００４４】
本発明に於いて、通気部材をアルミニウム材或はプラスチック材で構成した場合には、通気部材の所定位置に防虫、防鳥等を目的とした細かいスリット穴を穿設した場合にも、スリット穴の小口部分に錆が発生することを防止出来る効果を有している。かつ通気部材をアルミニウム材或はプラスチック材で構成した場合には、現場等に於ける二次加工を容易にすることが出来る効果も有している。
【００４５】
本発明に於いて、通気部材の立上り部に複数の穴を並列して設けると共に、該立上り部の片面に不燃性体積膨張材を取付けて構成した場合には、火災時には高温度によって膨張する不燃性体積膨張材を、取付けられた立上がり部の片面のみならず、反対側の面にも前記複数の穴を通して膨張させることが出来る効果を有している。
【００４６】
そのために、火災時の高温度によって通気部材が溶融して変形した場合にも、通気部材の立上り部の片側に設けられた不燃性体積膨張材が該立上り部の両側に膨張し、天井に設けられた通気用の通路を完全に閉鎖することが出来、火炎、熱気等が小屋裏に侵入することを防止出来る効果を有している。
【００４７】
また、通気部材の立上り部に突起部を設けた場合には、仮に通気部材の一部が火災の高温によって変形或は落下した場合にも、膨張した不燃性体積膨張材はこの突起部によって支持されるので、通気部材より落下する心配がない。
【００４８】
本発明に於いて、通気部材をアルミニウム材或はプラスチック材で構成した場合には、防虫、防鳥等を目的とした細かいスリット穴の小口部分に錆が発生することを防止出来る効果がある。従って、スリット穴を表側から見える部分に穿設することが出来るため、通気部材の構成を単純にすることが出来、通気部材の設計が容易となり、かつ建築物の様々な納まりに対応することを優先的に検討出来る。
【００４９】
本発明に於いて、アルミニウム材或はプラスチック材で構成した場合には、押出成形の技術を利用すること出来、熱発泡を挿入する溝、水の浸入防止を考慮した通気経路等、組立性、機能性を向上させる方策として、断面形状が複雑化した場合でも、容易に開発出来る効果がある。
【図面の簡単な説明】
【図１】図１は本発明に係る第１実施例の軒裏通気部材の要部を示す斜視図である。
【図２】図２は図１の軒裏通気部材を天井に取付けた状態の縦断面図である。
【図３】図３は火災時に不燃性体積膨張材が発泡した状態の縦断面図である。
【図４】図４は図１の軒裏通気部材を傾斜のある天井に取付けた状態の縦断面図である。
【図５】図５は本発明に係る第２実施例の軒裏通気部材の要部を示す斜視図である。
【図６】図６は図５の軒裏通気部材を天井に取付けた状態の縦断面図である。
【図７】図７は図５の軒裏通気部材を傾斜のある天井に取付けた状態の縦断面図である。
【図８】図８は本発明に係る第３実施例の軒裏通気部材の要部を示す斜視断面図である。
【図９】図９は第３実施例の他例の軒裏通気部材の要部を示す斜視断面図である。
【図１０】図１０は本発明に係る第４実施例の軒裏通気部材の要部を示す斜視断面図である。
【図１１】図１１は第４実施例の他例の軒裏通気部材の要部を示す斜視断面図である。
【図１２】図１２は本発明に係る第５実施例の軒裏通気部材の要部を示す斜視図である。
【図１３】図１３は図１２の軒裏通気部材を天井に取付けた状態の縦断面図である。
【図１４】図１４は図１３に於ける不燃性体積膨張材が膨張した状態の縦断面図である。
【図１５】図１５は図１２の軒裏通気部材を傾斜した天井に取付けた状態の縦断面図である。
【図１６】図１６は本発明の第６実施例の軒裏通気部材の縦断面図である。
【図１７】図１７は図１６の状態の不燃性体積膨張材が発泡した状態の説明図である。
【符号の説明】
１・・・アルミニウム材
２・・・上部水平部
３・・・立上り部
４・・・下部水平部
５・・・換気穴
６・・・換気穴
７・・・不燃性体積膨張材
８・・・換気通路
９・・・軒天井板
１０・・・外壁
１１・・・小屋裏
１２・・・通気用の通路
１３・・・ネジ
１４・・・軒天井板下地
１５・・・通気部材
１６・・・換気通路
１７・・・通気部材
１８・・・通気部材
１９・・・鼻隠し板
２０・・・鼻隠し板下地
２１・・・屋根
２２・・・通気部材
２３・・・通気部材
２４・・・通気部材
２５・・・突起部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ventilation member attached to a so-called ceiling, such as a ceiling wall, a nose cover, a ceiling board, etc., for ventilating the back of a hut, and particularly has low rust generation and easy secondary processing, and has fireproof properties. It is related with the eaves back ventilation member.
[0002]
[Prior art]
Conventionally, in a building, there is an example of adopting a construction method in which an eaves ventilation member is installed on the ceiling and ventilation is provided on the back of the hut in order to improve the lifetime of the building.
[0003]
Further, when ventilation is made in the back of the hut through the ventilation member in this way, there has been a problem that fire, hot air, etc. easily enter through the ventilation member in the event of a fire. Accordingly, conventionally, for example, JP-A-6-73828 (first known technique), JP-A-6-264553 (second known technique), JP-A-7-42299 (third known technique), As exemplified in Japanese Patent Application Laid-Open No. 9-105200 (fourth publicly known technique), a technique in which a noncombustible volume expansion material is mounted in a ventilation passage formed in an eaves ventilation member attached to a ceiling has been developed. ing.
[0004]
[Problems to be solved by the invention]
However, in each of the first to fourth known techniques described above, since a non-combustible volume expansion material is mounted in the ventilation passage, fire or hot air begins to enter the ventilation passage in the event of a fire. The high temperature caused the non-combustible volume expansion material to expand and close the ventilation passage, which had the effect of preventing fires from entering the back of the hut. However, each had the following problems.
[0005]
That is, in the techniques related to the first known technique and the second known technique, the material constituting the eaves back ventilation member is a material having a high temperature melting point that sufficiently resists hot air or fire in the event of a fire, such as steel, It was necessary to manufacture with materials such as stainless steel.
[0006]
However, when the eaves ventilation member is made of a material such as steel or stainless steel, it is possible to withstand hot air, fire, etc. in the event of a fire. When a ventilation hole made of a fine slit hole is drilled, there is a problem that rust is generated from the small edge portion of the slit hole.
[0007]
Also, when the eaves ventilation member is made of a high melting point material such as steel or stainless steel, when performing secondary processing such as cutting the eaves ventilation member to a predetermined dimension at the factory or construction site, There were problems such as difficult next processing.
[0008]
Furthermore, as in the second known technique, a structure is also known in which a nonflammable volume expansion material is attached to the small face of the ceiling board. In this technique, the nonflammable attached to the small face of the ceiling board is known. The expandable volume expandable material is exposed to the outside, and there is a problem that the appearance is poor and the design is not preferable. In addition, in order to solve this problem, a technique for attaching a parting material around the small edge of the ceiling board is also known, but in this case, a parting material prepared separately must be attached, and material costs and construction There was a problem that it took a lot of time and increased costs.
[0009]
And in order to improve the above-mentioned problem, the above-mentioned 4th well-known technique is developed. The fourth publicly known technique is a technique in which an eaves back ventilation member is formed using an aluminum material in order to improve the defect of the eaves back ventilation member formed of the material such as steel or stainless steel.
[0010]
However, in the fourth known technique, since the eaves ventilation member is formed using an aluminum material, the problem of rust and the problem of secondary processing can be solved, but the aluminum material has a relatively low temperature. However, since the back ventilation member melts and the mold breaks down. 1. Since a heat radiating part must be provided in a part of the eaves ventilation member, the material is wasted and the cost is increased. 2. It becomes difficult to design the eaves back ventilation member. Since the heat radiating part as described above protrudes, there is a problem that the housing of the building is complicated.
[0011]
The eaves ventilation member according to the present invention is a completely new technology developed in view of the above-described conventional problems. In particular, the eaves ventilation member is easy to perform secondary processing and has the problem of rusting. Even if the eaves ventilation member is deformed by flame or hot air in the event of a fire, the non-combustible volume expansion material attached to the eaves ventilation member should be removed from the eaves ventilation member. By inflating on both sides of the rising part, the air passage for venting the back of the hut provided on the ceiling is completely closed with a non-combustible volume expansion material to prevent intrusion of flames and hot air into the back of the hut It provides a completely new technology for the eaves ventilation member.
[0012]
[Means for Solving the Problems]
An eaves back ventilation member according to the present invention is a technology that fundamentally improves the above-mentioned problems, and the gist of the first invention is a ventilation member attached to a ceiling in order to ventilate the back of a hut. In addition, the eaves back ventilation member is characterized in that a non-combustible volume expansion material is attached to both surfaces of the rising portion of the ventilation member.
[0013]
In the first invention described above, since the non-combustible volume expansion material is attached to both surfaces of the rising portion of the ventilation member, the non-flammable volume expansion material is expanded on both sides of the rising portion of the ventilation member in the event of a fire. I can do it. Therefore, even when the ventilation member melts and deforms or falls due to a high temperature at the time of a fire, the incombustible volume expansion material provided on both sides of the rising portion of the ventilation member is provided with a ventilation passage provided on the ceiling. Since it is completely closed, flames, hot air, etc. can be prevented from entering the back of the hut.
[0014]
The gist of the second invention of the eaves back ventilation member according to the present invention is characterized in that the ventilation member is made of an aluminum material or a plastic material which is less likely to generate rust and is easy to perform secondary processing. It is the eaves back ventilation member of 1 invention.
[0015]
In the second invention described above, since the ventilation member is made of an aluminum material or a plastic material, even when a fine slit hole is formed at a predetermined position of the ventilation member for the purpose of preventing insects, birds, etc. It is possible to prevent rust from occurring at the edge of the slit hole. Further, when the ventilation member is made of an aluminum material or a plastic material, secondary processing at the site can be facilitated.
[0016]
The gist of the third invention of the eaves back ventilation member according to the present invention is the first invention or the second invention, characterized in that a projection is provided at a predetermined position on one or both sides of the rising part of the ventilation member. The eaves back ventilation member of the invention.
[0017]
In the above-mentioned third invention, since the protrusion is provided at a predetermined position on one or both sides of the rising portion of the ventilation member, the ventilation member melts at a high temperature in the event of a fire, and in particular, the lower horizontal portion. Even if they are deformed or dropped, the expanded incombustible volume expansion material is supported by the projections, so there is no fear of dropping.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a main part of an eaves back ventilation member according to the first embodiment of the present invention. FIG. 2 is a perspective view of FIG. 3 is a longitudinal sectional view of the eaves-back ventilation member attached to the ceiling, FIG. 3 is a longitudinal sectional view of a state where the non-combustible volume expansion material is foamed in the event of a fire, and FIG. It is a longitudinal cross-sectional view of the state attached to.
[0019]
FIG. 5 is a perspective view showing an essential part of an eaves back ventilation member of a second embodiment according to the present invention, FIG. 6 is a longitudinal sectional view of the state where the eaves back ventilation member of FIG. 5 is attached to the ceiling, and FIG. It is a longitudinal cross-sectional view of the state which attached the eaves back ventilation member to the sloping ceiling.
[0020]
FIG. 8 is a perspective cross-sectional view showing the main part of the eaves back ventilation member of the third embodiment according to the present invention. FIG. 9 is a perspective cross-sectional view showing the main part of the eaves back ventilation member of another example of the third embodiment. .
[0021]
FIG. 10 is a perspective cross-sectional view showing the main part of the eaves back ventilation member of the fourth embodiment according to the present invention. FIG. 11 is a perspective cross-sectional view showing the main part of the eaves back ventilation member of another example of the fourth embodiment. .
[0022]
12 is a perspective view showing an essential part of an eaves ventilating member of a fifth embodiment according to the present invention, FIG. 13 is a longitudinal sectional view of the eaves ventilating member of FIG. 12 attached to the ceiling, and FIG. FIG. 15 is a longitudinal sectional view of a state in which the non-combustible volume expansion material in FIG. 12 is expanded, and FIG.
[0023]
FIG. 16 is a longitudinal sectional view of an eaves back ventilation member according to a sixth embodiment of the present invention, and FIG. 17 is an explanatory view of a state where the non-combustible volume expansion material in the state of FIG. 16 is foamed.
[0024]
The eaves back ventilation member of the first embodiment according to the present invention will be described with reference to FIGS. Reference numeral 1 denotes a ventilation member made of an aluminum material, and the upper horizontal portion 2, the rising portion 3, and the lower horizontal portion 4 have a substantially U-shaped cross section.
[0025]
A plurality of ventilation holes 5 are formed in the upper horizontal portion 2. A plurality of slit-shaped ventilation holes 6 are formed in the lower horizontal portion 4 and the tip edge thereof is curved upward to form a water slice 4d. The rising portion 3 is zigzag-folded in a zigzag manner, and a noncombustible volume expansion material 7 is attached to the inner surface and the outer surface, respectively. The rising portion 3 can be formed by a simple plane without zigzag folding.
[0026]
The noncombustible volume expansion material 7 is formed of an expandable graphite-based flameproof and smokeproof sealant, and has a property of expanding about 10 times at a hot air temperature of 150 to 170 ° C. The ventilation member 1 of the present invention has a ventilation passage 8 formed therein, and is configured so that air sucked into the ventilation passage 8 from the lower ventilation hole 6 can be vented to the upper ventilation hole 5. Yes.
[0027]
When the ventilation member 1 according to the present invention is attached to the ceiling, for example, as shown in FIG. 2 or FIG. 4, a passage for ventilation to the back of the hut 11 formed between the eaves ceiling plate 9 and the outer wall 10. After being inserted into 12, the upper horizontal part 2 of the ventilation member 1 can be attached by fixing it to the eaves ceiling base 14 with a screw 13.
[0028]
2 is an example in which the eaves ceiling plate 9 is horizontal, and FIG. 4 is an example in which the eaves ceiling plate 9 is inclined. Therefore, in the case of FIG. 2, almost the entire rising portion 3 of the ventilation member 1 can be brought into contact with the outer wall 10. In the case of FIG. 4, only the lower portion of the rising portion 3 of the ventilation member 1 is attached to the outer wall 10. Can abut.
[0029]
When a fire occurs in the first embodiment according to the present invention, as illustrated in FIG. 3, the temperature of the flame or hot air invades into the passage 12 for ventilation to the cabin back 11. When the temperature reaches 150 to 170 ° C., the non-combustible volume expansion material 7 attached to both surfaces of the rising portion 3 of the ventilation member 1 immediately expands to completely close the passage 12, so that a flame or hot air is blown into the hut 11. Can be completely prevented.
[0030]
In the case of the first embodiment of the present invention, as described above, the non-combustible volume expansion material 7 provided on both surfaces of the rising portion 3 of the ventilation member 1 is expanded, so that the ventilation member 1 made of an aluminum material is illustrated. As shown in Fig. 3, even if the shape melts at a high temperature and the shape collapses, the non-combustible volume expansion material 7 on both sides completely closes the passage 12, so that flames, hot air, etc. enter the passage 12 without any influence. Can be prevented.
[0031]
Therefore, when the first embodiment described above is carried out, the ventilation member 1 can be configured using an aluminum material that is easy to perform secondary processing and does not cause rust. Moreover, it is not necessary to perform a special process for releasing heat to a predetermined position of the ventilation member 1 as in the above-described conventional fourth known technique. Furthermore, in the above-described embodiment, the ventilation member 1 is made of an aluminum material. However, the ventilation member 1 can be made of a plastic material that can be easily subjected to secondary processing and does not cause the occurrence of rust.
[0032]
The eaves back ventilation member according to the second embodiment of the present invention will be described with reference to FIGS. The difference between the eaves ventilating member of the second embodiment and the eaves ventilating member of the first embodiment described above is a difference in whether or not the ventilation passage 8 is present inside the vent member.
[0033]
That is, the ventilation member 15 in the case of the second embodiment does not have a ventilation passage. In this case, the ventilation member 15 has a wide ventilation passage 12 as clearly shown in FIGS. It is installed and used at almost the center. Accordingly, the ventilation passage 16 is formed between the rising portion 15 b of the ventilation member 15 and the outer wall 10. The ventilation member 15 is also made of an aluminum material or a plastic material.
[0034]
Similarly to the first embodiment, the second embodiment can be used by mounting the ventilation member 15 in the passage 12. In the event of a fire, the incombustible volume expansion material 7 attached to both surfaces of the rising portion 15b expands and closes the passage 12, so that fire and hot air enter the back of the hut through the passage 12. Can be prevented.
[0035]
In the case of the third embodiment shown in FIGS. 8 and 9, the ventilation members 17, 18 are not folded into a U-shaped cross section like the above-described ventilation members 1, 15. This is an embodiment in which the tip is bent into a substantially L shape or T shape. These ventilation members 17 and 18 are also made of an aluminum material or a plastic material.
[0036]
Also in the case of the ventilation members 17 and 18 of the third embodiment, the incombustible volume expansion material 7 is attached to both surfaces of the rising portions 17a and 18a, and slit-like ventilation holes are formed only in the lower horizontal portions 17b and 18b. 6 is formed by drilling. In the figure, 19 is a nasal cover, 20 is a nasal cover, and 21 is a roof.
[0037]
In the fourth embodiment shown in FIGS. 10 and 11, a ventilation passage 12 is formed in the middle portion of the eaves ceiling plate 9, and a ventilation member 22 made of an aluminum material or a plastic material is formed in the passage 12. , 23 are inserted and attached. The ventilation member 22 has substantially the same shape as the ventilation member 17, and the ventilation member 23 has a substantially inverted U-shaped cross section, and a slit-like ventilation is formed on the top surface portion 23 a of the ventilation member 23. A hole 6 is drilled.
[0038]
The fifth embodiment shown in FIGS. 12 to 15 is an invention having a basic configuration different from that of the first to fourth embodiments. That is, in the case of the fifth embodiment, as in the above-described embodiment, the non-combustible volume expansion material 7 is provided on both surfaces of the rising portion, such as the ventilation members 1, 15, 17, 18, 22, and 23, respectively. Instead of mounting and configuring, the non-combustible volume expansion material 7 is mounted only on one side of the ventilation member, and when the non-combustible volume expansion material 7 is heated, it is expanded on both sides of the rising portion, In this structure, the ventilation passage 12 can be closed.
[0039]
Specifically, the fifth embodiment of the ventilation member 24 of the fifth embodiment has substantially the same structure as the ventilation member 1 of the first embodiment, but its rising portion 24a. A plurality of holes having relatively large diameters are drilled in parallel, and the non-combustible volume expansion material 7 is attached to only one surface of the rising portion 24a.
[0040]
In the case where the ventilation member 24 configured as described above is used, when the nonflammable volume expansion material 7 starts to expand when flame, hot air, etc. enter the passage 12, the nonflammable volume expansion material 7 is attached. Since not only one surface of the rising portion 24a but also the opposite surface side of the rising portion 24a protrudes through the plurality of holes 25, the passage 12 is completely closed by the noncombustible volume expansion material 7. In addition, it is possible to prevent a flame, hot air, etc. from entering the back of the hut 11.
[0041]
Therefore, even when the ventilation member 24 is made of an aluminum material or a plastic material that is easy to perform secondary processing and does not cause the occurrence of rust, the ventilation member 24 is formed at a high temperature as shown in FIG. Even when the shape is lost due to melting, the passage 12 can be completely closed in a stable state by the expanded noncombustible volume expansion material 7.
[0042]
In the present invention, as shown in FIGS. 16 (a), 16 (b) and FIGS. 17 (a), 17 (b), the protruding portions 25 are provided in a protruding manner at predetermined positions on both surfaces of the rising portion 3 of the ventilation member 1. It is also possible to do. In this case, even when the rising portion 3 and the lower horizontal portion 4 of the ventilation member 1 are melted and deformed or dropped in the event of a fire, the expanded noncombustible volume expansion material 7 is supported by the protrusions 25. Therefore, there is no fear of falling from the ventilation member 1. The protrusion 25 can be provided on one side (for example, in the case of the fifth embodiment).
[0043]
【The invention's effect】
In the present invention, since the non-combustible volume expansion material is attached to both surfaces of the rising part of the ventilation member, the non-combustible volume expansion material can be expanded on both sides of the rising part of the ventilation member in the event of a fire. . Therefore, even when the ventilation member melts and deforms or falls due to a high temperature at the time of a fire, the incombustible volume expansion material provided on both sides of the rising portion of the ventilation member is provided with a ventilation passage provided on the ceiling. Since it is completely closed, it has the effect of preventing flames, hot air, etc. from entering the back of the hut. In addition, when a part of the ventilation member is melted and dropped, the heat receiving area of the ventilation member can be remarkably reduced.
[0044]
In the present invention, when the ventilation member is made of an aluminum material or a plastic material, even when a fine slit hole is formed at a predetermined position of the ventilation member for the purpose of preventing insects, birds, etc. It has the effect of preventing the occurrence of rust in the fore edge portion of. In addition, when the ventilation member is made of an aluminum material or a plastic material, there is an effect that the secondary processing at the site can be facilitated.
[0045]
In the present invention, when a plurality of holes are provided in parallel in the rising portion of the ventilation member and a non-combustible volume expansion material is attached to one surface of the rising portion, the non-combustible material expands due to a high temperature during a fire. This has the effect that the porous expandable material can be expanded through the plurality of holes not only on one surface of the rising portion to which it is attached, but also on the opposite surface.
[0046]
Therefore, even when the ventilation member melts and deforms due to a high temperature at the time of a fire, the noncombustible volume expansion material provided on one side of the rising part of the ventilation member expands on both sides of the rising part and is provided on the ceiling. It is possible to completely close the vent passage and prevent the flame, hot air and the like from entering the back of the hut.
[0047]
In addition, when a protrusion is provided at the rising part of the ventilation member, even if a part of the ventilation member is deformed or dropped due to the high temperature of a fire, the expanded noncombustible volume expansion material is supported by this protrusion. Therefore, there is no worry of falling from the ventilation member.
[0048]
In the present invention, when the ventilation member is made of an aluminum material or a plastic material, there is an effect that rust can be prevented from being generated in a small slit hole for the purpose of insect prevention, bird protection and the like. Therefore, since the slit hole can be drilled in the portion that can be seen from the front side, the structure of the ventilation member can be simplified, the design of the ventilation member is facilitated, and it corresponds to various housing of the building. Priority can be considered.
[0049]
In the present invention, when made of aluminum material or plastic material, it is possible to use the technology of extrusion molding, groove for inserting thermal foam, ventilation path considering water intrusion, etc. As a measure for improving functionality, there is an effect that can be easily developed even when the cross-sectional shape is complicated.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of an eaves back ventilation member according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the eaves back ventilation member of FIG. 1 attached to the ceiling.
FIG. 3 is a longitudinal sectional view showing a state where a non-combustible volume expansion material is foamed in a fire.
4 is a longitudinal sectional view showing a state where the eaves back ventilation member of FIG. 1 is attached to an inclined ceiling. FIG.
FIG. 5 is a perspective view showing an essential part of an eaves back ventilation member of a second embodiment according to the present invention.
6 is a longitudinal sectional view showing a state in which the eaves back ventilation member of FIG. 5 is attached to the ceiling.
7 is a longitudinal sectional view showing a state in which the eaves back ventilation member of FIG. 5 is attached to an inclined ceiling. FIG.
FIG. 8 is a perspective sectional view showing an essential part of an eaves back ventilation member according to a third embodiment of the present invention.
FIG. 9 is a perspective sectional view showing a main part of an eaves back ventilation member of another example of the third embodiment.
FIG. 10 is a perspective sectional view showing an essential part of an eaves back ventilation member according to a fourth embodiment of the present invention.
FIG. 11 is a perspective sectional view showing the main part of an eaves back ventilation member of another example of the fourth embodiment.
FIG. 12 is a perspective view showing an essential part of an eaves back ventilation member of a fifth embodiment according to the present invention.
FIG. 13 is a longitudinal sectional view of the eaves back ventilation member of FIG. 12 attached to the ceiling.
FIG. 14 is a longitudinal sectional view of the incombustible volume expansion material in FIG. 13 in an expanded state.
FIG. 15 is a longitudinal sectional view showing a state where the eaves back ventilation member of FIG. 12 is attached to an inclined ceiling.
FIG. 16 is a longitudinal sectional view of an eaves back ventilation member according to a sixth embodiment of the present invention.
FIG. 17 is an explanatory diagram of a state where the non-combustible volumetric expansion material in the state of FIG. 16 is foamed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Aluminum material 2 ... Upper horizontal part 3 ... Rising part 4 ... Lower horizontal part 5 ... Ventilation hole 6 ... Ventilation hole 7 ... Nonflammable volume expansion material 8・ Ventilation passage 9 ・・・ Eave ceiling plate 10 ・・・ Outer wall 11 ・・・ Back of hut 12 ・・・ Ventilation passage 13 ・・・ Screw 14 ・・・ Eave ceiling plate base 15 ・・・ Ventilation member 16 -Ventilation passage 17 ... Ventilation member 18 ... Ventilation member 19 ... Nasal concealment plate 20 ... Nasal concealment plate base 21 ... Roof 22 ... Ventilation member 23 ... Ventilation member 24 ..Ventilation member 25 ... projection

Claims

A ventilation member attached to the ceiling for allowing ventilation to the back of the hut, wherein the non-combustible volume expansion material is attached to both surfaces of the rising portion of the ventilation member. .

2. The eaves-back ventilation member according to claim 1, wherein the ventilation member is made of an aluminum material or a plastic material that is less likely to generate rust and is easy to perform secondary processing.

The eaves back ventilation member according to claim 1 or 2 , wherein a projection is provided at a predetermined position on one or both sides of the rising portion of the ventilation member.