JP4051272B2

JP4051272B2 - Method for construction around opening at the time of renovation and decorative member around opening for use in construction method

Info

Publication number: JP4051272B2
Application number: JP2002342301A
Authority: JP
Inventors: 康孝辻
Original assignee: Nichiha Corp
Current assignee: Nichiha Corp
Priority date: 2002-11-26
Filing date: 2002-11-26
Publication date: 2008-02-20
Anticipated expiration: 2022-11-26
Also published as: JP2004176350A

Description

【０００１】
【発明の属する技術分野】
本発明は、既存の建物の外壁面に新たな長尺状の外装材を張り付けてリフォームを行う場合における、当該既存の建物の外壁面に形成されている窓部のような開口部の周りに対する施工方法、及び該施工方法に用いる開口部周り化粧部材に関する。
【０００２】
【従来の技術】
従来の開口部の周りに対する施工方法、及び該施工方法に用いる開口部周り化粧部材は、既存の建物の開口部の４周に沿い新たに胴縁を取り付け、そこに、新たな外装材の端面部分を挿入し得る挿入用空間形成部を備えた薄板鋼板を折り曲げ加工してなる化粧部材を、挿入用空間形成部が外側となるようにして固定する。そして、リフォーム用の新たな外装材を、その端面部分を前記の挿入用空間形成部に挿入しながら建物壁面に取り付けていくようにしている（例えば、特許文献１参照）。
【０００３】
また、この種の従来技術として、リフォーム用壁面に対するサッシ窓枠の補修部材は、２つの横方向の補修部材と、２つの縦方向の補修部材とから構成され、縦方向補修部材の取付孔にビスを通して横方向補修部材の筒状部にネジ込むことにより止着している（例えば、特許文献２参照）。
【０００４】
【特許文献１】
特開２００２−１８８２８０号公報（図１）
【特許文献２】
特開２００１−３１７１９３号公報（図８）
【０００５】
【発明が解決しようとする課題】
前者の開口部の周りに対する施工方法、及び該施工方法に用いる開口部周り化粧部材は、シーリング施工を不要にできる等の数々の効果を有するものであるが、化粧部材は４つの部品からなって部品点数が多く、施工作業が多少煩雑であり、さらなる改良が求められていた。また、外装材の端面部分は挿入用空間形成部に挿入されるが、切断端面は切断されて塗装が無くなっており、浸入した雨水が触れることは好ましくない。さらに、後者の補修部材は、補修部材をアルミニウムの押出し材や、硬質プラスチックなどによる一体成形体で形成しており、この補修部材は高価であり、しかも４つの部材から構成され部品点数が多くなると共に、４つの部材を連結するため施工作業が煩雑となって施工コストが高くなっていた。
【０００６】
本発明は、このような問題に鑑みてなされたものであって、その目的とするところは、安価な化粧部材を用いることで施工コストを低減できる開口部の周りに対する施工方法、及び該施工方法に用いる開口部周り化粧部材を提供することにある。また、部品点数が少なく構成が簡単な化粧部材を用いることで施工作業を容易にできる開口部の周りに対する施工方法、及び該施工方法に用いる開口部周り化粧部材を提供することを目的とする。
【０００７】
【課題を解決するための手段】
前記目的を達成すべく、本発明に係る開口部の周りに対する施工方法は、既設の建物の開口部周りの４周に沿い新たに胴縁を取り付ける工程、リフォーム用の外装材の端面部分の基準となる金属板製の化粧部材を、胴縁を利用して当該開口部周りの４周に固定し、新たな開口部を形成する工程、及び、外装材を新たな開口部の周囲の既存の建物壁面に張り付けていく工程、とを少なくとも有し、前記化粧部材は、前記４周のうち、一方の水平辺と左右の垂直辺の３周に沿う直線状部材を連結した連結化粧部材と、他方の水平辺の１周に沿う水平化粧部材との２つの集合体から構成され、前記外装材は、その端面部分が連結化粧部材を基準として張り付けられることを特徴とする。
【０００８】
金属板としては適宜の板材を適用できるが、板金加工が容易な鋼板が好適である。外装材は連結化粧部材を基準として、直接当接するように張り付けてもよく、防水パッキン等を挟んで張り付けてもよい。また、外装材は連結化粧部材と間隙を有して対向するように張り付けられ、この間隙にシーリング材を注入する工程をさらに有するようにすると好適である。
【０００９】
前記のごとく構成された本発明の開口部の周りに対する施工方法は、化粧部材が一方の水平辺と左右の垂直辺の３周を構成する連結化粧部材と、他方の水平辺の１周に沿う水平化粧部材の２つの集合体からなり、２つの部品から構成されるため部品点数を少なくでき、化粧部材の組立ても容易に行えるため施工作業が容易となる。しかも化粧部材は金属板からカットして板金加工により形成されるため、部品のコストを低減でき施工のコストを低減できる。さらに、連結化粧部材の３周部分はシーリング材が注入され、防水性能が向上する。なお、他の1周の水平化粧部材と外装材との間にも、シーリング材を注入するようにすると、さらに防水性能を向上できる。
【００１０】
また、本発明に係る前記施工方法に用いる開口部周り化粧部材は、前記の施工方法に用いる開口部周り化粧部材であって、該化粧部材は、新たな開口部周りの３周を形成する一方の水平辺及び左右の垂直辺の直線状部材を連結した連結化粧部材と、残りの１周を形成する水平化粧部材、との集合体として構成されることことを特徴としている。
【００１１】
このように構成された本発明の開口部周り化粧部材は、開口部周りの４周のうち、連結化粧部材は開口部周りの３周を形成する一方の水平辺及び左右の垂直辺の直線状部材を連結しており、一度に３周に沿って新たな開口部の３辺を形成することができ、残りの１周は水平化粧部材により新たな開口部の１辺を形成することができる。このため、既設の開口部の周りに、新たな開口部を極めて容易に形成することができる。
【００１２】
本発明に係る開口部周り化粧部材の好ましい具体的な態様としては、前記直線状部材は、新たな胴縁への固定面となる基部平坦面と、該基部平坦面の前方側に突出形成され外装材の端面部分の基準となる前方突出面と、該前方突出面の内側に位置する額縁部と、該額縁部から後方に延出し胴縁の内周を覆う内周カバー面とを少なくとも備えることを特徴としている。前方突出面は、例えば外装材の端面部分を直接当接させて基準とすることができ、また間隙を有して対向させて、外装材を張り付けるときの基準とすることができる。
【００１３】
この構成によれば、基部平坦面を用いて連結化粧部材を新たな胴縁に固定でき、基部平坦面に連続して突出形成された前方突出面を基準として新たな外装材を当接させ、あるいは間隙を有して対向させて固定することができる。そして、額縁部から後方に延出した内周カバー面で胴縁の内周部を覆うことができ、新たな胴縁の周辺を少ない部品点数で確実に止水することができる。
【００１４】
さらに、本発明に係る開口部周り化粧部材の好ましい具体的な他の態様としては、前記連結化粧部材は、長尺状の部材から新たに形成する開口部周りの寸法に合わせて適切な長さに切断され、前記３周の直線状部材の長さに合わせてＶ字カット等の切込みを形成して、直角に折り曲げられたものであることを特徴としている。この構成によれば、連結化粧部材は長尺材を加工して容易に形成することができ、しかも長尺状の部材を現場で新たな開口部の３周に合わせて切断し、折り曲げる部分に対応して切込みを形成して折り曲げることにより、連結化粧部材を容易に形成することができる。
【００１５】
本発明に係る開口部周り化粧部材の好ましい具体的なさらに他の態様としては、前記水平化粧部材は、水切り面と、該水切り面より後方に延出し新たな胴縁の内周を覆う内周カバー面と、該内周カバー面と直交する下方向に延出して新たな胴縁への固定面となる基部平坦面とを備えることを特徴とする。この構成によれば、新たな開口部の水平の１周に沿って、水平化粧部材を基部平坦面で固定し、基部平坦面に連続する水切り面で雨水が侵入するのを防止でき、内周カバー面で胴縁周辺の止水を行うことができる。
【００１６】
なお、連結化粧部材は、開口部周りの４週全ての辺に沿う直線状部材を連結して形成してもよい。その場合は、下側の水平化粧部材は使用しないで、新たな開口部を形成することができる。
【００１７】
【発明の実施の形態】
以下、本発明の好ましい実施の形態を図面に基づき詳細に説明する。図１は本発明によるリフォーム時における開口部周りの施工方法と該施工方法に用いる開口部周り化粧部材の一実施の形態を説明する一部を破断した斜視図、図２は施工後の開口部周りの垂直方向の要部断面図、図３は施工後の水平方向の要部断面図である。
【００１８】
図１〜３に示す例では、窓枠サッシ５０が外付けサッシとして取り付けてある既設の建物の開口部６０の上辺、左右の側辺、下辺の４周に、本発明による開口部周りの化粧部材１０を取り付け、この化粧部材を基準として既存の外装壁（例えばモルタル壁）Ａの外側に新たなリフォーム用の外装材Ｂを張り付けて建物外壁のリフォームを行っている。
【００１９】
既設の建物の下地材（まぐさ及び窓台）５１や、柱５２などに横胴縁５３や縦胴縁５４が取り付けられ、該胴縁５３，５４を利用してモルタル壁のような外装壁Ａが既存の開口部６０を形成するようにして取り付けられており、該開口部６０の４周に、シーリング材５５やバックアップ材５６を介在して窓枠サッシ５０が取り付けられている。なお、この開口部周りの構成は、既存の開口部周りの一例であって、本発明によるリフォーム時における開口部周りの施工方法は、任意の既存の開口部周りに対して施工することが可能である。
【００２０】
施工に際して、最初に、既存の開口部６０の４周に沿って、適宜の横胴縁３及び縦胴縁４を外装壁Ａに対し釘５あるいはビスを用いて打ち付け固定する。各胴縁３，４の奥行方向の厚さＬ１は、既存の壁面がモルタル壁の場合は３０ｍｍ程度の厚さのものが好ましい。なお、本実施形態では、図１に示すように下方の水平方向の胴縁３と垂直方向の胴縁４とは、１０ｍｍ程度の隙間が設定されて固定されている。このように構成することにより、胴縁の周りに万一雨水等が浸入した場合でも下方に向けて排水することができる。
【００２１】
つぎに、上記のようにして固定した胴縁３，４に対して、本発明による開口部周り化粧部材１０を取り付ける。化粧部材１０は、胴縁３，４により形成された新たな開口部周りの３周を形成する上辺及び左右の側辺の直線状部材を連結した連結化粧部材２０と、残りの１周を形成する水平化粧部材３０、との集合体として２部品で構成され、本実施形態ではガルバニウム鋼板の０．３〜０．４ｍｍ程度の厚さの板材で形成されている。
【００２２】
先ず、図４〜６を参照して化粧部材１０を構成する一方の部材である連結化粧部材２０について詳細に説明する。連結化粧部材２０を形成する長尺状部材２１の詳細を、図４を参照して説明する。長尺状部材２１はガルバニウム鋼板製であり、新たに取り付けた胴縁３，４への固定面となる基部平坦面２２と、該基部平坦面２２の前方側に突出し、新規の外装材Ｂの端面部分の基準となる前方突出面２３と、該前方突出面２３の内側（図では下側）に延出する額縁面２４と、該額縁面２４から後方側に延出する内周カバー面２５を有する。内周カバー面２５の後方側への延出幅は、胴縁３，４の前後方向の幅を覆う幅に設定され、この内周カバー面２５が胴縁３，４の内周を覆って内部への浸水を防止する。
【００２３】
金属板材としてガルバニウム鋼板を板金加工して折り曲げた図５ａに示す長尺状部材２１は、図５ｂに示すように、両端部に直角部２１ａと傾斜部２１ｂとが形成され所定の長さに切断され、連結化粧部材２０の上側左右のコーナー部に当たる部分についてＶ字カットで切込みを入れて、左側辺部材２０Ａ、上辺部材２０Ｂ、及び右側辺部材２０Ｃを有する連結化粧部材２０に形成される。直角部２１ａと傾斜部２１ｂは、後述する水平化粧部材３０の内周カバー面３４と、水切り面３２に対接するものである。この連結化粧部材２０は工場で予め加工しておいてもよいが、現場で開口部６０の内法寸法に合わせて容易にカットして折り曲げることができる特徴を有している。なお、切込みはＶ字カットに限られるものでなく、直角に切込みを入れて重ねるものでもよい。
【００２４】
この製作過程において、Ｖ字カットの角度を中心側を４５度に設定し、外側を４５度より小さい角度に設定することにより、外側に額縁重合片２６を形成している。また、内周カバー面２５のＶ字カット部分の外側を下側に折り曲げてカバー重合片２７を形成している。額縁重合片２６は、上辺部材２０Ｂに対して左側辺部材２０Ａ及び右側辺部材２０Ｃを直角に折り曲げたとき、４５度にカットされた上辺部材２０Ｂの下側に位置してカット部分に隙間が生じるのを防止している。カバー重合片２７は、同様に直角に折り曲げたとき、上辺部材２０Ｂの内周カバー面２５の内側に入り込み、直角状態を保持することができる。
【００２５】
なお、基部平坦面２２に対して前方突出面２３は直角であることが好ましいが、額縁面２４は前方突出面２３に対して直角である必要はなく、鋭角的に曲げたものでもよい。内周カバー面２５は前方突出面２３と平行であることが好ましく、これらは新たに形成される開口部６０Ａの外観意匠性をより向上させるためになされるものであり、その目的を達成する限りにおいて形状や大きさは任意であって、図示のものに限られないことは勿論である。このように、左側辺部材２０Ａ、上辺部材２０Ｂ、及び右側辺部材２０Ｃは、長尺状の部材２１から折り曲げ形成するもので、連続して同じ断面形状のものであり、額縁面２４に連続して後方に延出する内周カバー面２５の奥行は、胴縁３，４の厚さに合わせて設定される。
【００２６】
また、左側辺部材２０Ａ及び右側辺部材２０Ｃの内周カバー面２５の垂直方向の高さは横方向の上下の胴縁３，３の垂直方向間隔と一致するように設定され、縦胴縁４，４の内周奥行面の全面を覆う形状となっている。上辺部材２０Ｂの内周カバー面２５の水平方向の長さは縦方向の左右の胴縁４，４の水平方向間隔と一致するように設定され、上方の胴縁３の内周奥行面の全面を覆う形状となっている。このように内周カバー面２５が後方に延出して胴縁３，４の内周を一体的に覆うため、胴縁木口を隠すためのＬ型ジョイナー等が不要で部品点数を少なくできると共に施工作業を簡略化することができる。
【００２７】
つぎに、図７，８を参照して化粧部材１０を構成する他方の部材である水平化粧部材３０について詳細に説明する。水平化粧部材３０は連結化粧部材２０と同様に、金属板材としてガルバニウム鋼板から形成された長尺状部材３１より形成する。長尺状部材３１は、前方に向けてやや下方に傾斜する水切り面３２の前端は、下方に鉛直方向に折り曲げられて前面部３３を形成し、該水切り面３２の後端は後方に延出して胴縁３，４の内周を覆う内周カバー面３４を構成し、該内周カバー面３４の後端は１８０度折り曲げられて前方に延出してから鉛直方向に折り曲げられて下方向に延出する基部平坦面３５を形成している。
【００２８】
水平化粧部材３０の水平方向長さは、連結化粧部材２０の水平方向長さより大きく形成することが好ましい。このように形成すると、連結化粧部材２０を伝って流れる雨水を確実に排水できる。また、内周カバー面３４は鋼板を折り返して二重に形成されており、施工完了後に手が触れやすい内周カバー面３４の強度を向上させ、かつ、鋼板木口面による怪我を防ぐことができる。
【００２９】
内周カバー面３４の奥行方向の幅は、連結化粧部材２０と同様に胴縁３，４の厚さによって設定される。既存建物の外壁がモルタルの外装壁Ａの場合は厚さが３０mmの胴縁を使用するため奥行は３０mmに設定される。そして、内周カバー面３４の水平方向の長さは、縦方向の左右の胴縁４，４の水平方向間隔と一致するように設定され、下方の胴縁３の上方の内周面を全幅に亘って確実に覆う形状となっている。
【００３０】
水平化粧部材３０の製作過程を図８を参照して説明する。（ａ）は長尺状部材３１を示しており、（ｂ）に２点鎖線で示すように切込みを入れ、（ｃ）の状態となる。このあと、１点鎖線で示すように先ず前面部３３を後方に折り曲げ、次いで水切り面３２を下方に折り曲げたあと、最初に折り曲げた前面部を包むように端部を折り曲げて一体化する。
【００３１】
このように製作された水平化粧部材３０は、（ｅ）に示すように水切り面３２及び前面部３３の両端部は折り曲げられて重ねられ両端垂直面３６，３６が形成され、該両端垂直面と基部平坦面３５との間にはリフォーム用の新規の外装材Ｂが挿入される左右の開口３７，３７が形成されている。この開口の水平方向の幅は新規の外装材Ｂが挿入できる幅、すなわち外装材Ｂの厚さより僅かに大きく設定され、開口の高さは水切り面３２に至るように形成されている。
【００３２】
連結化粧部材２０と水平化粧部材３０とを組み合わせた状態を図９に示す。図９において、上部の連結化粧部材２０と下部の水平化粧部材３０は、内周カバー面３４に直角部２１ａが隙間なく対接し、水切り面３２に傾斜部２１ｂ隙間なく対接している。
【００３３】
前記の如く構成された本実施形態の化粧部材の既存の外装壁Ａへの取り付け操作及び外装材Ｂの施工について以下に説明する。
先ず、図１１に示すように、下方の胴縁３に対して水平化粧部材３０を取り付ける。内周カバー面３４を胴縁３の上面に対接させながら後方に向けて挿入し、基部平坦面３５を胴縁３の前面に当接させ前方より釘６を打って固定する。これにより水平化粧部材３０の内周カバー面３４と基部平坦面３５との直角部分は下方の胴縁３の上面と前面との直角部に密着し、内周カバー面３４が下方の胴縁３の上面を覆って保護する。
【００３４】
つぎに、左側辺部材２０Ａ、上辺部材２０Ｂ、及び右辺部材２０Ｃを連結した連結化粧部材２０を、それぞれの前方突出面２３が外側となるようにして、胴縁３，４の内周縁により形成される開口部周りに、その基部平坦面２２を対接させ、前記胴縁３，４に対して釘６を打ち込んで固定する。この際に、内周カバー面２５が胴縁３，４の内周面に接した状態で前方より挿入して基部平坦面２２を胴縁３，４の前面に対接させ釘打ちで固定する。釘打ちの順番は任意であり、すべてを打ち付け固定することにより、左右の胴縁４，４と上方の胴縁３の内周面は内周カバー面２５に覆われて保護され、止水性及び外観意匠性に富んだ新たな開口部６０Ａが形成される。
連結化粧部材２０と水平化粧部材３０とを、胴縁３，４に取り付けた状態を図１０，１１に示す。
【００３５】
新たに形成された開口部６０Ａに対して、リフォーム用の新たな外装材Ｂを張り付けていく。先ず、水平化粧部材３０の両端の開口３７，３７に外装材Ｂの上辺を挿入させて、外装材Ｂの上端が水切り面３２の下面に当接、あるいは僅かな間隔を有するように釘打ちにより胴縁３と図示していない他の垂直方向に延びる胴縁に固定する。
【００３６】
次いで、外装材Ｂの端面部分を、図２，３に示すように、連結化粧部材２０の前方突出面２３を基準として、前方突出面から間隙Ｓを有して対向するように張り付けていく。このとき、図３に示す片ハットジョイナー４０を左右の側辺部材２０Ａ，２０Ｃに当接させて、胴縁４と外装材Ｂで挟んだ状態で片ハットジョイナー４０に外装材Ｂを当接させると、片ハットジョイナー４０の平板部から突出した湾曲部により容易に水平方向の間隙Ｓが得られる。図２に示すように、上辺部材２０Ｂの上部にはバックアップ材４１で間隙Ｓを形成して、外装材Ｂを張り付ける。そして、連結化粧部材２０の全周に外装材Ｂを順次張り付けたあと、間隙Ｓの上部にシーリング材４２を注入することにより、本発明によるリフォーム時における開口部周り施工は完了する。シーリング材４２は、連結化粧部材２０の３辺に沿う間隙Ｓに注入され、確実に止水する。
【００３７】
なお、図１では外装材Ｂを横張りする態様を示しているが、縦張りであってもよいことは勿論である。また、外装材Ｂを張り付けるとき、連結化粧部材２０の周囲に所定の間隙Ｓを空けて張り付け、この間隙Ｓに後からバックアップ材４１を押し込むようにしてもよい。外装材の張り付けは釘打ちによる例を示したが、固定金具を用いて外装材を張り付けるようにすることもできる。さらに、上辺、左右の側辺の３方の間隙Ｓにバックアップ材４１を押し込んで、シーリング材４２を注入してもよい。
【００３８】
このようにして、施工された本実施形態の施工構造では、前方突出面２３と外装材Ｂの端面との間はシーリング材４２で確実に漏水が防止され、シーリング材４２に沿って流れる雨水は下部の水平化粧部材３０の水切り面３２を伝って前方側に誘導されて内部に浸入することはない。また、上部の連結化粧部材２０の内側に降り込んだ雨水は、連結化粧部材の内周カバー面２５を伝って胴縁の内部に浸入することは防止される。そして、水平化粧部材３０の水切り面３２に沿って前方に誘導され、外装材Ｂの内部に漏水することが防止される。
【００３９】
本発明の他の実施形態を図１２に基づき詳細に説明する。図１２は本発明に係る化粧部材の他の実施形態の断面図である。なお、この実施形態は前記した実施形態においては既存壁がモルタルであったのに対し、既存壁がサイディング張りの場合に使用するもので、胴縁の奥行方向の厚さが異なることを特徴とする。そして、他の実質的に同等の構成については同じ符号を付して詳細な説明は省略する。
【００４０】
図１２において、既存壁がサイディング張りの場合、胴縁３Ａ，４Ａ（３Ａのみ図示）は奥行方向の厚さＬ２が小さいものを使用するため、連結化粧部材２０は内周カバー面２５ａの奥行が厚さＬ２に合わせて小さく設定されている。また、水平化粧部材３０も内周カバー面３４ａの奥行も、厚さＬ２に合わせて小さく設定されている。例えば、前記の実施形態では胴縁３，４の厚さは３０ｍｍ程度のものが使用されるが、図１２に示す実施形態では胴縁３，４の厚さは１８ｍｍ程度のものが使用され、内周カバー面２５ａ，３４ａの奥行は１８ｍｍに合わせて小さいものが使用されている。
【００４１】
この実施形態においても、奥行の小さい内周カバー面２５ａ，３４ａは胴縁３，４の内周面を確実に覆うことができるため、別のＬ型ジョイナー等を使用して胴縁３，４の内周面を覆う必要がなく、部品点数を少なくでき、化粧部材１０の取り付け作業を簡略化することができる。
【００４２】
以上、本発明の一実施形態について詳述したが、本発明は、前記の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の精神を逸脱しない範囲で、種々の設計変更を行うことができるものである。例えば、化粧部材の胴縁への固定は、最初に水平化粧部材を固定し、次いで連結化粧部材を固定する例を説明したが、これに限られるものでなく先ず連結化粧部材を固定し、次いで連結化粧部材の下端に対接させて水平化粧部材を固定するように順序を変えてもよい。
【００４３】
また、水平化粧部材の開口と新規の外壁板との対接部分にはシーリング材を注入してさらに防水性を向上させてもよく、連結化粧部材と水平化粧部材の対接部分のコーナー部にもシーリング材を塗布するようにしてもよい。さらに、連結化粧部材の立ち下がり面と水平化粧部材の内周カバー面との対接部分にもシーリング材を塗布するようにしてもよい。化粧部材を形成する金属板としては、鋼板の他に銅板やトタン板、アルミ板、ステンレス鋼板等、適宜の板材を使用することができる。
【００４４】
化粧部材は、上辺と左右の側辺の連続する３周を形成する連結化粧部材と、下辺を形成する水平化粧部材から構成する例を示したが、下辺と左右の側辺の連続する３周を形成する連続化粧部材と、上辺を形成する水平化粧部材、との集合体としてから構成するものでもよい。
【００４５】
【発明の効果】
以上の説明から理解できるように、本発明によるリフォーム時における開口部周り施工方法によれば、新たな外装材Ｂを取り付けることにより、既存の外壁は完全に隠蔽することができ、かつ、新たな開口部周りでの外装材の端面部分は化粧部材の前方突出面とシーリングされて覆われることとなり、外部に露出することはない。そのために、新たな外装材の端面が雨水に曝されることはなく、また、建物内部に雨水が浸入することもない。新たな開口部周り外側に現れるのは、金属板からなる化粧部材の外側面のみであり、リフォーム時における開口部周りを低コストで施工することができる。
【００４６】
また、本発明によれば、リフォーム時での化粧部材の取り付け作業は容易であり、かつ、確実な固定が得られる。また、既存の開口部と新たな開口部との間での所要の止水性も確保される。さらに、化粧部材は、水平辺及び左右の垂直辺を連結した連結化粧部材と水平化粧部材の集合体として構成されているので、種々の異なった寸法の開口部に対しても、連結化粧部材の折り曲げ長さを変えると共に水平化粧部材の長さを変えることで、容易にかつ適切にリフォーム施工をすることができる。
【図面の簡単な説明】
【図１】本発明によるリフォーム時における開口部周りの施工方法と該施工方法に用いる開口部周り化粧部材の一実施の形態を説明する一部を破断した斜視図。
【図２】施工後の開口部周りの垂直方向の要部断面図。
【図３】施工後の開口部周りの水平方向の要部断面図。
【図４】化粧部材を構成する一部材である連結化粧部材を形成する長尺状部材を示す斜視図。
【図５】図４に示す長尺状部材より連結化粧部材を製作する過程を示す斜視図。
【図６】図５に連続する連結化粧部材を製作する過程を示す斜視図。
【図７】化粧部材を構成する他の部材である水平化粧部材を形成する長尺状部材を示す斜視図。
【図８】図７に示す長尺状部材より水平化粧部材を製作する過程を示す斜視図。
【図９】図６（ｂ）に示す連結化粧部材と、図８（ｅ）に示す水平化粧部材とを組み合わせた状態の化粧部材の斜視図。
【図１０】連結化粧部材と水平化粧部材とを胴縁に取り付けた状態の正面図。
【図１１】図１０のＡ−Ａ線に沿う一部を省略した要部断面図。
【図１２】化粧部材の他の実施形態を示す、図１１に相当する要部断面図。
【符号の説明】
１０…化粧部材、２０…連結化粧部材、２０Ａ…左側辺部材、２０Ｂ…上辺部材、２０Ｃ…右側辺部材、２１…長尺状部材、２２…基部平坦面、２３…前方突出面、２４…額縁面、２５，２５ａ…内周カバー面、３０…水平化粧部材、３１…長尺状部材、３２…水切り面、３４，３４ａ…内周カバー面、３５…基部平坦面、３７…開口、４２…シーリング材、５０…既存の窓枠サッシ、６０…既存の開口部、６０Ａ…新たに形成される開口部、Ａ…既存の外装壁面、Ｂ…リフォームされる新規な外装材、Ｓ…間隙[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the periphery of an opening such as a window formed on the outer wall surface of the existing building when renovating by attaching a new elongated exterior material to the outer wall surface of the existing building. The present invention relates to a construction method and a decorative member around an opening used in the construction method.
[0002]
[Prior art]
The conventional construction method around the opening, and the decorative member around the opening used in the construction method, are newly attached to the body edge along the four circumferences of the opening of the existing building, and the end face of the new exterior material there A decorative member formed by bending a thin steel plate having an insertion space forming portion into which a portion can be inserted is fixed so that the insertion space forming portion is on the outside. Then, a new exterior material for renovation is attached to the building wall surface while inserting the end surface portion into the insertion space forming portion (see, for example, Patent Document 1).
[0003]
In addition, as a conventional technique of this type, the repair member for the sash window frame with respect to the wall surface for renovation includes two lateral repair members and two longitudinal repair members, and is provided in the mounting hole of the longitudinal repair member. It is fixed by screwing into the cylindrical part of the lateral repair member through a screw (for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP 2002-188280 A (FIG. 1)
[Patent Document 2]
JP 2001-317193 A (FIG. 8)
[0005]
[Problems to be solved by the invention]
The former construction method for the periphery of the opening and the decorative member around the opening used in the construction method have a number of effects such as making sealing work unnecessary, but the decorative member is composed of four parts. The number of parts is large, construction work is somewhat complicated, and further improvements have been demanded. Moreover, although the end surface part of the exterior material is inserted into the insertion space forming portion, the cut end surface is cut and the paint is lost, and it is not preferable that the rainwater that has entered is touched. Further, in the latter repair member, the repair member is formed of an integrally molded body made of an extruded aluminum material or hard plastic, and this repair member is expensive, and is composed of four members and increases the number of parts. In addition, since the four members are connected, the construction work becomes complicated and the construction cost is high.
[0006]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a construction method around an opening that can reduce construction costs by using an inexpensive decorative member, and the construction method. An object of the present invention is to provide a decorative member around the opening used in the above. Moreover, it aims at providing the construction method with respect to the opening part which can perform construction work easily by using the decorative member with few components, and a simple structure, and the opening surrounding decorative member used for this construction method.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the construction method for the periphery of the opening according to the present invention includes a step of newly attaching a trunk edge along the four circumferences around the opening of an existing building, and a reference for the end surface portion of the exterior material for renovation The metal plate decorative member to be used is fixed to four circumferences around the opening by using the trunk edge, and a new opening is formed, and an exterior material is provided around the new opening. A step of sticking to a building wall surface, and the decorative member is a connected decorative member that connects linear members along three circumferences of one horizontal side and left and right vertical sides of the four circumferences; It is comprised from two aggregates with the horizontal decorative member along one circumference of the other horizontal side, The said exterior material is affixed on the basis of a connection decorative member, It is characterized by the above-mentioned.
[0008]
Although an appropriate plate material can be applied as the metal plate, a steel plate that can be easily processed into a sheet metal is suitable. The exterior material may be attached so as to be in direct contact with the connected decorative member as a reference, or may be attached with a waterproof packing or the like interposed therebetween. Further, it is preferable that the exterior material is pasted so as to face the connected decorative member with a gap, and further includes a step of injecting a sealing material into the gap.
[0009]
In the construction method for the periphery of the opening of the present invention configured as described above, the decorative member is connected to the connected decorative member that forms three laps of one horizontal side and the left and right vertical sides, and the other horizontal side is along one lap. Since it consists of two aggregates of horizontal decorative members, it is composed of two parts, so the number of parts can be reduced, and since the decorative members can be easily assembled, construction work is facilitated. Moreover, since the decorative member is cut from a metal plate and formed by sheet metal processing, the cost of parts can be reduced and the cost of construction can be reduced. Furthermore, the sealing material is injected into the three peripheral portions of the connecting decorative member, and the waterproof performance is improved. It should be noted that the waterproof performance can be further improved by injecting a sealing material between the other one-level horizontal decorative member and the exterior material.
[0010]
Also, the decorative member around the opening used in the construction method according to the present invention is a decorative member around the opening used in the construction method, and the decorative member forms three circumferences around the new opening. It is characterized by comprising as an aggregate of a connecting decorative member that connects linear members of the horizontal side and the right and left vertical sides and a horizontal decorative member that forms the remaining one round.
[0011]
In the thus configured decorative member around the opening of the present invention, of the four circumferences around the opening, the connecting decorative member forms a straight shape with one horizontal side and left and right vertical sides forming three circumferences around the opening. The members are connected, and three sides of the new opening can be formed along three circumferences at a time, and one side of the new opening can be formed by the horizontal decorative member on the remaining one circumference. . For this reason, a new opening can be formed very easily around the existing opening.
[0012]
As a preferable specific aspect of the decorative member around the opening according to the present invention, the linear member is formed so as to protrude to the front side of the base flat surface, which is a fixed surface to the new trunk edge, and the base flat surface. A front projecting surface serving as a reference for the end surface portion of the exterior material, a frame portion positioned inside the front projecting surface, and an inner peripheral cover surface extending rearward from the frame portion and covering the inner periphery of the trunk edge are provided. It is characterized by that. The front projecting surface can be used as a reference, for example, by directly abutting the end surface portion of the exterior material, or can be used as a reference when the exterior material is pasted with a gap therebetween.
[0013]
According to this configuration, the connecting decorative member can be fixed to a new body edge using the base flat surface, and a new exterior material is brought into contact with the front protruding surface formed continuously protruding from the base flat surface, Alternatively, they can be fixed facing each other with a gap. And the inner peripheral part of a trunk edge can be covered with the inner peripheral cover surface extended back from the frame part, and the periphery of a new trunk edge can be reliably stopped with a small number of parts.
[0014]
Furthermore, as another preferable specific aspect of the decorative member around the opening according to the present invention, the connecting decorative member has an appropriate length in accordance with a dimension around the opening newly formed from a long member. It is characterized by being cut at right angles by forming a cut such as a V-shaped cut in accordance with the length of the three-round linear member. According to this configuration, the connecting decorative member can be easily formed by processing a long material, and the long member is cut at the site in accordance with the three circumferences of the new opening and bent at the part to be bent. Corresponding decorative members can be easily formed by forming the corresponding cuts and bending them.
[0015]
According to still another preferred aspect of the decorative member around the opening according to the present invention, the horizontal decorative member includes a draining surface and an inner periphery that extends rearward from the draining surface and covers an inner periphery of a new trunk edge. A cover surface and a base flat surface that extends downward in a direction perpendicular to the inner peripheral cover surface and serves as a fixing surface to a new trunk edge are provided. According to this configuration, the horizontal decorative member is fixed on the base flat surface along one horizontal circumference of the new opening, and rainwater can be prevented from entering through the draining surface continuous to the base flat surface. Water can be stopped around the trunk edge on the cover surface.
[0016]
The connecting decorative member may be formed by connecting linear members along all sides of the opening around the four weeks. In that case, a new opening can be formed without using the lower horizontal decorative member.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view, partially broken, illustrating an embodiment of a construction method around an opening at the time of reforming according to the present invention and a decorative member around the opening used in the construction method, and FIG. 2 is an opening after construction. FIG. 3 is a cross-sectional view of the main part in the horizontal direction after construction, and FIG. 3 is a cross-sectional view of the main part in the horizontal direction after construction.
[0018]
In the example shown in FIGS. 1-3, the makeup | decoration around the opening part by this invention is carried out on 4 rounds, the upper side of the opening part 60 of the existing building to which the window frame sash 50 is attached as an external sash, the left and right sides, and the lower side. The member 10 is attached, and the exterior wall of the building is reformed by attaching a new exterior material B for reforming to the outside of the existing exterior wall (for example, mortar wall) A with the decorative member as a reference.
[0019]
A horizontal trunk edge 53 and a vertical trunk edge 54 are attached to a base material (lintel and window stand) 51 of an existing building, a pillar 52, and the like, and an exterior wall such as a mortar wall using the trunk edges 53, 54. A is attached so as to form an existing opening 60, and a window frame sash 50 is attached to the four circumferences of the opening 60 with a sealing material 55 and a backup material 56 interposed therebetween. The configuration around the opening is an example around the existing opening, and the construction method around the opening at the time of reforming according to the present invention can be applied to any existing opening. It is.
[0020]
At the time of construction, first, along the four circumferences of the existing opening 60, appropriate horizontal trunk edges 3 and vertical trunk edges 4 are fixed to the exterior wall A by using nails 5 or screws. When the existing wall surface is a mortar wall, the thickness L1 of each trunk edge 3, 4 in the depth direction is preferably about 30 mm thick. In the present embodiment, as shown in FIG. 1, the lower horizontal barrel edge 3 and the vertical barrel edge 4 are fixed with a gap of about 10 mm. By comprising in this way, even if rain water etc. permeate around a trunk edge, it can drain toward the downward direction.
[0021]
Next, the decorative member 10 around the opening according to the present invention is attached to the trunk edges 3 and 4 fixed as described above. The decorative member 10 is formed with a connected decorative member 20 that connects the linear members on the upper side and the left and right sides that form three circumferences around the new opening formed by the body edges 3 and 4, and the remaining one circumference. The horizontal decorative member 30 is composed of two parts, and in this embodiment is formed of a plate material having a thickness of about 0.3 to 0.4 mm of a galvanium steel plate.
[0022]
First, with reference to FIGS. 4-6, the connection decorative member 20 which is one member which comprises the decorative member 10 is demonstrated in detail. Details of the elongated member 21 forming the connecting decorative member 20 will be described with reference to FIG. The elongate member 21 is made of a galvanium steel plate, protrudes to the front side of the base flat surface 22 to be a fixed surface to the newly attached trunk edges 3, 4, and the new exterior material B A front projecting surface 23 serving as a reference for the end surface portion, a frame surface 24 extending to the inside (lower side in the figure) of the front projecting surface 23, and an inner peripheral cover surface 25 extending rearward from the frame surface 24. Have The width of the inner peripheral cover surface 25 extending to the rear side is set to a width that covers the width of the trunk edges 3 and 4 in the front-rear direction, and the inner peripheral cover surface 25 covers the inner circumference of the trunk edges 3 and 4. Prevent water from entering inside.
[0023]
The long member 21 shown in FIG. 5a, which is formed by bending a galvanium steel plate as a metal plate, is cut into a predetermined length with right-angled portions 21a and inclined portions 21b formed at both ends as shown in FIG. 5b. Then, a portion corresponding to the upper left and right corners of the connecting decorative member 20 is cut with a V-shaped cut to form the connecting decorative member 20 having the left side member 20A, the upper side member 20B, and the right side member 20C. The right angle portion 21 a and the inclined portion 21 b are in contact with an inner peripheral cover surface 34 and a draining surface 32 of the horizontal decorative member 30 described later. The connecting decorative member 20 may be processed in advance at the factory, but has a characteristic that it can be easily cut and bent in accordance with the internal dimensions of the opening 60 at the site. Note that the cutting is not limited to the V-shaped cut, and may be made by cutting at a right angle and overlapping.
[0024]
In this manufacturing process, the frame overlap piece 26 is formed on the outer side by setting the V-cut angle to 45 degrees on the center side and setting the outer side to an angle smaller than 45 degrees. Further, the cover overlapping piece 27 is formed by bending the outside of the V-shaped cut portion of the inner peripheral cover surface 25 downward. When the left side member 20A and the right side member 20C are bent at a right angle with respect to the upper side member 20B, the frame overlap piece 26 is positioned below the upper side member 20B cut at 45 degrees, and a gap is generated in the cut portion. Is preventing. Similarly, when the cover overlap piece 27 is bent at a right angle, the cover overlap piece 27 can enter the inside of the inner peripheral cover surface 25 of the upper side member 20B, and can maintain the right angle state.
[0025]
The front projecting surface 23 is preferably perpendicular to the base flat surface 22, but the frame surface 24 need not be perpendicular to the front projecting surface 23 and may be bent at an acute angle. The inner peripheral cover surface 25 is preferably parallel to the front projecting surface 23, and these are made to further improve the appearance design of the newly formed opening 60A, and as long as the object is achieved. Of course, the shape and size are arbitrary, and are not limited to those shown in the drawings. As described above, the left side member 20A, the upper side member 20B, and the right side member 20C are formed by bending the long member 21 and have the same cross-sectional shape continuously, and are continuous with the frame surface 24. The depth of the inner peripheral cover surface 25 extending rearward is set in accordance with the thickness of the trunk edges 3 and 4.
[0026]
In addition, the vertical height of the inner peripheral cover surface 25 of the left side member 20A and the right side member 20C is set so as to coincide with the vertical interval between the upper and lower trunk edges 3 and 3 in the lateral direction. , 4 covers the entire inner peripheral depth surface. The horizontal length of the inner peripheral cover surface 25 of the upper side member 20B is set so as to coincide with the horizontal interval between the left and right trunk edges 4 and 4, and the entire inner peripheral depth surface of the upper trunk edge 3 is set. It has a shape that covers. In this way, the inner peripheral cover surface 25 extends rearward and integrally covers the inner periphery of the trunk edges 3 and 4, so that an L-shaped joiner or the like for concealing the trunk edge is unnecessary and the number of parts can be reduced. Work can be simplified.
[0027]
Next, the horizontal decorative member 30 which is the other member constituting the decorative member 10 will be described in detail with reference to FIGS. Similarly to the connecting decorative member 20, the horizontal decorative member 30 is formed of a long member 31 formed of a galvanium steel plate as a metal plate material. In the long member 31, the front end of the draining surface 32 inclined slightly downward toward the front is bent downward in the vertical direction to form a front surface portion 33, and the rear end of the draining surface 32 extends rearward. The inner peripheral cover surface 34 that covers the inner periphery of the trunk edges 3 and 4 is configured, and the rear end of the inner peripheral cover surface 34 is bent 180 degrees and extended forward, and then bent vertically and downward. An extending base flat surface 35 is formed.
[0028]
The horizontal length of the horizontal decorative member 30 is preferably formed larger than the horizontal length of the connecting decorative member 20. If it forms in this way, the rain water which flows along the connection decorative member 20 can be drained reliably. In addition, the inner peripheral cover surface 34 is formed in a double shape by folding the steel plate, so that the strength of the inner peripheral cover surface 34 that is easy to touch after completion of construction can be improved, and injuries due to the steel plate end can be prevented. .
[0029]
The width in the depth direction of the inner peripheral cover surface 34 is set by the thickness of the trunk edges 3 and 4, similarly to the connecting decorative member 20. When the outer wall of the existing building is a mortar exterior wall A, the depth is set to 30 mm because a body edge having a thickness of 30 mm is used. The horizontal length of the inner peripheral cover surface 34 is set so as to coincide with the horizontal interval between the left and right trunk edges 4, 4 in the vertical direction. It is the shape which covers reliably over.
[0030]
The manufacturing process of the horizontal decorative member 30 will be described with reference to FIG. (A) has shown the elongate member 31, cut | incised as shown by a dashed-two dotted line in (b), and it will be in the state of (c). Thereafter, as indicated by a one-dot chain line, first, the front surface portion 33 is bent backward, then the draining surface 32 is bent downward, and then the end portion is bent and integrated so as to wrap the first bent front surface portion.
[0031]
The horizontal decorative member 30 manufactured in this way is formed by folding both ends of the draining surface 32 and the front surface portion 33 as shown in (e) to form both end vertical surfaces 36, 36. Between the base flat surface 35, left and right openings 37, 37 into which a new exterior packaging material B for reforming is inserted are formed. The horizontal width of the opening is set to be slightly larger than the width into which the new exterior material B can be inserted, that is, the thickness of the exterior material B, and the height of the opening is formed to reach the draining surface 32.
[0032]
FIG. 9 shows a state where the connecting decorative member 20 and the horizontal decorative member 30 are combined. In FIG. 9, the upper connecting decorative member 20 and the lower horizontal decorative member 30 are in contact with the inner peripheral cover surface 34 with the right-angled portion 21 a without a gap, and with the draining surface 32 with the inclined portion 21 b without a gap.
[0033]
The operation of attaching the decorative member of the present embodiment configured as described above to the existing exterior wall A and the construction of the exterior material B will be described below.
First, as shown in FIG. 11, the horizontal decorative member 30 is attached to the lower trunk edge 3. The inner peripheral cover surface 34 is inserted rearward while being in contact with the upper surface of the trunk edge 3, the base flat surface 35 is brought into contact with the front surface of the trunk edge 3, and the nail 6 is hit from the front and fixed. As a result, the right angle portion between the inner peripheral cover surface 34 and the base flat surface 35 of the horizontal decorative member 30 is in close contact with the right angle portion between the upper surface and the front surface of the lower trunk edge 3, and the inner peripheral cover surface 34 is the lower trunk edge 3. Cover and protect the top surface.
[0034]
Next, the connecting decorative member 20 obtained by connecting the left side member 20A, the upper side member 20B, and the right side member 20C is formed by the inner peripheral edges of the trunk edges 3 and 4, with the respective front projecting surfaces 23 facing outside. The base flat surface 22 is brought into contact with the periphery of the opening, and the nail 6 is driven into and fixed to the trunk edges 3 and 4. At this time, the inner peripheral cover surface 25 is inserted from the front in contact with the inner peripheral surfaces of the trunk edges 3 and 4, and the base flat surface 22 is brought into contact with the front surfaces of the trunk edges 3 and 4 and fixed by nailing. . The order of nailing is arbitrary, and by fixing all the nails, the inner peripheral surfaces of the left and right trunk edges 4 and 4 and the upper trunk edge 3 are covered and protected by the inner peripheral cover surface 25, and the waterstop and A new opening 60A rich in appearance design is formed.
10 and 11 show a state in which the connecting decorative member 20 and the horizontal decorative member 30 are attached to the waist edges 3 and 4.
[0035]
A new exterior material B for renovation is attached to the newly formed opening 60A. First, the upper side of the outer packaging material B is inserted into the openings 37, 37 at both ends of the horizontal decorative member 30, and the upper end of the outer packaging material B is in contact with the lower surface of the draining surface 32 or is nailed so as to have a slight gap. It fixes to the trunk edge 3 and the other trunk edge which extends in the other vertical direction not shown.
[0036]
Next, as shown in FIGS. 2 and 3, the end surface portion of the exterior material B is pasted so as to face the front projecting surface with a gap S on the basis of the front projecting surface 23 of the connecting decorative member 20. At this time, the single hat joiner 40 shown in FIG. 3 is brought into contact with the left and right side members 20A and 20C, and the exterior material B is brought into contact with the single hat joiner 40 in a state of being sandwiched between the trunk edge 4 and the exterior material B. The horizontal gap S can be easily obtained by the curved portion protruding from the flat plate portion of the one-hat joiner 40. As shown in FIG. 2, a gap S is formed by a backup material 41 on the upper side member 20B, and the exterior material B is attached. Then, after the exterior material B is sequentially attached to the entire circumference of the connecting decorative member 20, the sealing material 42 is injected into the upper portion of the gap S, whereby the construction around the opening at the time of the renovation according to the present invention is completed. The sealing material 42 is injected into the gap S along the three sides of the connecting decorative member 20 and reliably stops water.
[0037]
Although FIG. 1 shows an aspect in which the exterior material B is horizontally stretched, it is needless to say that it may be vertically stretched. Further, when the exterior material B is pasted, a predetermined gap S may be provided around the connecting decorative member 20 and the backup material 41 may be pushed into the gap S later. Although an example in which the exterior material is attached by nailing is shown, the exterior material may be attached using a fixing bracket. Furthermore, the sealing material 42 may be injected by pushing the backup material 41 into the gaps S in the three directions of the upper side and the left and right sides.
[0038]
In the construction structure of the present embodiment thus constructed, water leakage is reliably prevented by the sealing material 42 between the front projecting surface 23 and the end surface of the exterior material B, and rainwater flowing along the sealing material 42 It is guided forward through the draining surface 32 of the lower horizontal decorative member 30 and does not enter the interior. Further, rainwater that has entered the inside of the upper connecting decorative member 20 is prevented from entering the inside of the trunk edge along the inner peripheral cover surface 25 of the connecting decorative member. And it guide | induces ahead along the draining surface 32 of the horizontal decorative member 30, and it is prevented that water leaks into the exterior material B inside.
[0039]
Another embodiment of the present invention will be described in detail with reference to FIG. FIG. 12 is a cross-sectional view of another embodiment of the decorative member according to the present invention. In this embodiment, the existing wall is mortar in the above-described embodiment, but the existing wall is used when the siding is stretched, and the thickness of the trunk edge in the depth direction is different. To do. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.
[0040]
In FIG. 12, when the existing wall is siding tension, the body edges 3A, 4A (only 3A is shown) having a thickness L2 in the depth direction is small. It is set to be small according to the thickness L2. Further, the horizontal decorative member 30 and the depth of the inner peripheral cover surface 34a are set to be small in accordance with the thickness L2. For example, in the above-described embodiment, the thickness of the trunk edges 3 and 4 is about 30 mm, but in the embodiment shown in FIG. 12, the thickness of the trunk edges 3 and 4 is about 18 mm. The inner cover surfaces 25a and 34a have a small depth in accordance with 18 mm.
[0041]
Also in this embodiment, since the inner peripheral cover surfaces 25a, 34a having a small depth can reliably cover the inner peripheral surfaces of the trunk edges 3, 4, the trunk edges 3, 4 using another L-shaped joiner or the like. It is not necessary to cover the inner peripheral surface of the cover, the number of parts can be reduced, and the attaching operation of the decorative member 10 can be simplified.
[0042]
Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, although the example in which the horizontal decorative member is first fixed and then the connecting decorative member is fixed has been described for fixing the decorative member to the trunk edge, the present invention is not limited to this. The order may be changed so that the horizontal decorative member is fixed in contact with the lower end of the connecting decorative member.
[0043]
Further, a sealing material may be injected into the contact portion between the opening of the horizontal decorative member and the new outer wall plate to further improve the waterproof property, and at the corner portion of the connecting portion between the connecting decorative member and the horizontal decorative member. Alternatively, a sealing material may be applied. Further, a sealing material may be applied to a contact portion between the falling surface of the connecting decorative member and the inner peripheral cover surface of the horizontal decorative member. As the metal plate forming the decorative member, an appropriate plate material such as a copper plate, a tin plate, an aluminum plate, a stainless steel plate, or the like can be used in addition to the steel plate.
[0044]
Although the decorative member has shown the example comprised from the connection decorative member which forms 3 rounds which an upper side and right and left sides continue, and the horizontal decorative member which forms a lower side, 3 rounds where a lower side and left and right sides continue It may be configured as an aggregate of a continuous decorative member that forms the upper side and a horizontal decorative member that forms the upper side.
[0045]
【The invention's effect】
As can be understood from the above description, according to the construction method around the opening at the time of renovation according to the present invention, by attaching a new exterior material B, the existing outer wall can be completely concealed, and a new The end surface portion of the exterior material around the opening is sealed and covered with the front projecting surface of the decorative member, and is not exposed to the outside. Therefore, the end face of the new exterior material is not exposed to rainwater, and rainwater does not enter the building. Only the outer surface of the decorative member made of a metal plate appears on the outer side around the new opening, and the area around the opening at the time of renovation can be applied at low cost.
[0046]
Moreover, according to this invention, the attachment operation | work of the decorative member at the time of renovation is easy, and reliable fixation is obtained. Moreover, the required water stoppage between the existing opening and the new opening is ensured. Furthermore, since the decorative member is configured as an assembly of the connecting decorative member and the horizontal decorative member in which the horizontal side and the right and left vertical sides are connected, the opening of various different dimensions can be used for the connecting decorative member. By changing the bending length and changing the length of the horizontal decorative member, it is possible to easily and appropriately carry out the renovation work.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view illustrating an embodiment of a construction method around an opening during renovation according to the present invention and an embodiment of a decorative member around the opening used in the construction method.
FIG. 2 is a cross-sectional view of a main part in a vertical direction around an opening after construction.
FIG. 3 is a cross-sectional view of the main part in the horizontal direction around the opening after construction.
FIG. 4 is a perspective view showing a long member forming a connected decorative member which is one member constituting the decorative member.
5 is a perspective view showing a process of manufacturing a connecting decorative member from the long member shown in FIG. 4. FIG.
6 is a perspective view showing a process of manufacturing the continuous connecting decorative member shown in FIG. 5. FIG.
FIG. 7 is a perspective view showing a long member forming a horizontal decorative member, which is another member constituting the decorative member.
8 is a perspective view showing a process of manufacturing a horizontal decorative member from the long member shown in FIG. 7;
9 is a perspective view of a decorative member in a state where the connecting decorative member shown in FIG. 6 (b) is combined with the horizontal decorative member shown in FIG. 8 (e).
FIG. 10 is a front view of a state in which a connecting decorative member and a horizontal decorative member are attached to the trunk edge.
11 is an essential part cross-sectional view in which a part along line AA in FIG. 10 is omitted.
12 is a cross-sectional view of an essential part corresponding to FIG. 11, showing another embodiment of the decorative member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Cosmetic member, 20 ... Connection cosmetic member, 20A ... Left side member, 20B ... Upper side member, 20C ... Right side member, 21 ... Elongate member, 22 ... Base flat surface, 23 ... Front protrusion surface, 24 ... Frame 25, 25a ... inner peripheral cover surface, 30 ... horizontal decorative member, 31 ... elongate member, 32 ... draining surface, 34, 34a ... inner peripheral cover surface, 35 ... base flat surface, 37 ... opening, 42 ... Sealing material, 50 ... existing window frame sash, 60 ... existing opening, 60A ... newly formed opening, A ... existing exterior wall surface, B ... new exterior material to be reformed, S ... gap

Claims

A process of attaching a new rim along the four circumferences around the opening of an existing building, a metal plate decorative member serving as a reference for an end face portion of a renovation exterior material, using the rim of the opening Fixing at around four circumferences, forming a new opening, and pasting the exterior material to an existing building wall around the new opening,
The decorative member is a connected decorative member formed by bending a long member, and the left side member which is a linear member along the upper horizontal side and the left and right vertical sides of the four circumferences, and The upper side member and the right side member are composed of two assemblies of a connected decorative member and a horizontal decorative member having a draining surface along one circumference of the lower horizontal side,
The elongate member includes a base flat surface, a front projecting surface projecting from the front side of the base flat surface, a frame portion positioned inside the front projecting surface, and a rear side from the frame portion. An inner peripheral cover surface that extends,
Attach the horizontal decorative member using the waist edge fixed to the lower horizontal side around the opening, and place the lower end of the left side member and the right side member on the draining surface of the horizontal decorative member, Attach the connecting decorative member using the torso fixed to the three circumferences of the upper horizontal side and the left and right vertical sides,
After pasting the exterior material so that its end face part is opposed to the connected decorative member with a gap,
A method for constructing a periphery of an opening during renovation, further comprising a step of injecting a sealing material into the gap.

An opening portion around the decorative member used in the construction method of claim 1, wherein said opening around the decorative member,
A connected decorative member formed by bending a long member, wherein the left side member, the upper side member, and the right side member are linear members that form three of the four circumferences around the opening. It is configured as an assembly of a member and a horizontal decorative member provided with a draining surface that forms the remaining one round,
The connecting decorative member includes a base flat surface, a front projecting surface projecting from the front side of the base flat surface, a frame portion located inside the front projecting surface, and a rearward extension from the frame portion. opening around the decorative member characterized by inner and a circumferential cover surface that.

The connecting decorative member is cut to an appropriate length according to the dimension around the opening newly formed from the long member, and the left side member, the upper side member, and the right side member, which are linear members of the three circumferences, are cut. The decorative member around the opening according to claim 2, wherein the decorative member is bent by forming a cut in accordance with the length.

The horizontal decorative member includes a draining surface, an inner peripheral cover surface that extends rearward from the draining surface and covers an inner periphery of the new trunk edge, and extends downward in a direction perpendicular to the inner peripheral cover surface. The decorative member around the opening according to claim 2 or 3, further comprising a base flat surface serving as a fixing surface to the trunk edge.