JP2004027747A

JP2004027747A - Extension construction method for purlin

Info

Publication number: JP2004027747A
Application number: JP2002188941A
Authority: JP
Inventors: Yuji Ueda; 上田　祐史; Yukinobu Koide; 小出　幸伸; Kazuo Nakahara; 中原　和夫; Hiroshi Kamiya; 上谷　博; Toshihiro Horie; 堀江　寿弘
Original assignee: Sekisui House Ltd
Current assignee: Sekisui House Ltd
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2004-01-29
Anticipated expiration: 2022-06-28
Also published as: JP3831872B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extension construction method for a purlin enabling reduction of labor, cost, and waste in extension construction work of a house. <P>SOLUTION: A purlin receiver connection part 4 is fixed to a purlin receiver fitting 2 by tightening the purlin receiver fitting 2 and the purlin receiver connection part 4 by a tightening device 200 using a purlin extension fitting 2 having the purlin receiver connection part 4 provided on a purlin receiver fitting 103 provided on an existing hip rafter beam 101 positioned at a boundary of the existing house and an extension part and a purlin connection part 5 forming substantially 90 degrees for the purlin receiver connection part 4. The purlin connection part 5 and an end part 3 of a new purlin 1 are tightened by the tightening device 200 to install the new purlin 1 on extension of the existing purlin 100. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、住宅の増築時の増築工事に際し、既存住宅の小屋組を全面解体することなく母屋を延長することができる母屋の延長工法に関する。
【０００２】
【従来の技術】
寄棟造りの住宅の桁側面に増築すると、増築後では増築前と比べて、棟高さが高くなったり、棟方向が変わったりして、小屋組架構全体が変わることが多い（図１参照）。
【０００３】
このような場合であって、増築部の新規母屋を既存住宅の既存母屋と同一面に配置する場合には、既存住宅の増築部側の母屋の設置方向を略９０°変更する必要が生じる。このため、従来は、既存住宅の小屋組を全面的に解体し、かつ、既存母屋を全て撤去して、新しい小屋組及びこれに対応した新規母屋を施工し直していた。
【０００４】
【発明が解決しようとする課題】
しかしながら、既存住宅の小屋組を全面的に解体し、かつ、既存母屋を全て撤去して、新しい小屋組及びこれに対応した新規母屋を施工し直すので、多くの時間と労力を要し、施工期間が長くなるだけでなく、作業性が悪いという問題点があった。
【０００５】
更に、既存住宅の小屋組を全面的に解体し、かつ、既存母屋を全て撤去することにより、多量の産業廃棄物が発生し、これを運搬して処理するために、費用がかかるという問題点があった。
【０００６】
更にまた、多くの場合は、増築工事中であっても顧客が既存住宅の住宅内で生活を営むため、短期間で増築工事を終了することが望ましいが、施工期間の長期化に伴い顧客に不便を強いる期間が長くなり、顧客の負担が大きくなるという問題点があった。
【０００７】
本発明は、上記課題に鑑みてなされたものであり、住宅の増築工事において、施工の省力化、コストダウン及び廃棄物の削減を図る母屋の延長工法を提供することを目的とする。
【０００８】
【課題を解決するための手段】
前記目的を達成するためになされた本発明の請求項１に記載の母屋の延長工法は、住宅の増築工事の際に既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規母屋を既存住宅の既存母屋と略同一面に配置する母屋の延長工法であって、既存住宅と増築部の境界に位置する既存隅木梁に設置された母屋受け金具に設置される母屋受け接続部と該母屋受け接続部と略９０°をなす母屋接続部とを有する母屋延長金具を用い、前記母屋受け金具と前記母屋受け接続部とを締結具で締結することにより、前記母屋受け金具に前記母屋受け接続部を固定し、前記母屋接続部と前記新規母屋の端部とを締結具で締結することにより、前記新規母屋を前記既存母屋の延長上に設置することを特徴とするものである。
【０００９】
【発明の実施の形態】
以下、本発明の実施の形態について図面に基づいて説明する。本発明の第１の実施形態の母屋の延長工法は、図１に示すように、既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規軒先母屋１を既存住宅の既存軒先母屋１００と略同一面に配置するものであって、図２に示すように、既存住宅と増築部の境界に位置する既存隅木梁１０１（図示せず）の軒先部に設けられた既存軒先梁１０２の先端に設置された軒先母屋受け金具１０３に軒先母屋延長金具２を固定し、該軒先母屋受け金具２に新規軒先母屋１の端部３を接続することにより、新規軒先母屋１を既存軒先母屋１００の延長上に設置することにより行う。なお、本各実施の形態に示す既存隅木梁１０１及び既存軒先梁１０２は、２本のＣ型鋼をボルト締めで締結したものであって、既存大棟の端部から軒先の出隅に向って４５°の方向へ持ち出すように設けられている（図１参照）。
【００１０】
既存軒先母屋１００は、図３に示すように、先端を所定の形状に形成した長尺の木角材であり、端部を既存軒先梁１０２の先端に設けられた軒先母屋受け金具１０３にボルトナットから構成される締結具２００で締結して固定されることにより既存軒先梁１０２に設置されている（図１参照）。
【００１１】
軒先母屋受け金具１０３は、図３に示すように、中央部で略９０°の角度をなして折れ曲がり、両端部に貫通孔１０４ａが穿設された山形プレート１０４と、該山形プレート１０４の折曲部１０５の入隅に一方の縁辺が固着された略長方形の接続プレート１０６とを有している。軒先母屋受け金具１０３の既存軒先梁１０２への固定は、接続プレート１０６の他方を既存軒先梁１０２の先端から、既存軒先梁１０２の２本のＣ型鋼の間に挿入し、接続プレート１０６の他方を既存軒先梁１０２の先端にボルト締めで固定することにより行う。
【００１２】
既存軒先母屋１００の軒先母屋受け金具１０３への固定は、図２に示すように、既存軒先母屋１００の先端と増築部側の既存軒先母屋１０７の先端とが略合致するように、軒先母屋受け金具１０３の山形プレート１０４の両外側面に既存軒先母屋１００の端部と増築部側の既存軒先母屋１０７の端部とをそれぞれあてがい、締結具２００で締結して固定することにより行う。これにより、既存軒先母屋１００と増築部側の既存軒先母屋１０７とが同一面に、かつ、略９０°の角度をなして既存軒先梁１０２の先端部に配置される。
【００１３】
新規軒先母屋１は、図３に示す既存軒先母屋１００と同様に、先端を所定の形状に形成した長尺の木角材であって、端部３には貫通孔３ａが穿設されている（図５参照）。
【００１４】
軒先母屋延長金具２は、図３に示すように、両端部に貫通孔４ａ、５ａが穿設された１枚のプレートを中央部で捻るようにして略９０°の角度をなすように折り曲げて形成し、その一方を軒先母屋受け接続部４、その他方を軒先母屋接続部５としたものである。
【００１５】
軒先母屋延長金具２の軒先母屋受け金具１０３への固定は、図４に示すように、軒先母屋受け金具１０３の山形プレート１０４の増築部側の側面に軒先母屋延長金具２の軒先母屋受け接続部４の側面を軒先母屋受け金具１０３の折曲部１０５と軒先母屋延長金具２の折曲部６とが略合致するようにあてがい、軒先母屋受け金具１０３の山形プレート１０４の貫通孔１０４ａと軒先母屋延長金具２の軒先母屋受け接続部４の貫通孔４ａとを締結具２００で締結することにより行う。これにより、図５に示すように、軒先母屋延長金具２の軒先母屋接続部５と軒先母屋受け金具１０３の山形プレート１０４の既存軒先母屋１００側の側面とが略同一面に、かつ、一直線上に配置される。
【００１６】
新規軒先母屋１の端部３の軒先母屋延長金具２への接続は、図５に示すように、軒先母屋延長金具２を軒先母屋受け金具１０３に固定した後、既存軒先母屋１００の先端と新規軒先母屋１の先端とが略合致するように、軒先母屋延長金具２の軒先母屋接続部５に新規軒先母屋１の端部３をあてがい、該新規軒先母屋１の端部３の貫通孔３ａと軒先母屋延長金具２の軒先母屋接続部５の貫通孔５ａとを締結具２００で締結することにより行う。これにより、図２に示すように、新規軒先母屋１が既存軒先母屋１００の延長上に設置される。
【００１７】
以上により、図１に示すように、既存住宅の増築部側の母屋の設置方向が略９０°変更されて、新規軒先母屋１が既存軒先母屋１００と同一面に配置される、即ち、既存軒先母屋１００が増築部側へ延長されたこととなる。
【００１８】
次に、本発明の第２の実施形態の母屋の延長工法は、図１に示すように、既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規第１母屋１０を既存住宅の既存第１母屋１１０と同一面に配置するものであって、図６に示すように、既存軒先梁１０２の既存隅木梁１００（図示せず）の方の端部に設置された第１母屋受け金具１１１に第１母屋延長金具１１を固定し、該第１母屋延長金具１１に新規第１母屋１０の端部１２を接続することにより、新規第１母屋１０を既存第１母屋１１０の延長上に設置することにより行う。新規第１母屋１０は、長尺の木角材であって、端部１２には貫通孔１２ａが穿設されている（図１０参照）。
【００１９】
既存第１母屋１１０は、既存軒先母屋１００と同様の構成であって、図６に示すように、端部を既存軒先梁１０２の所定位置に設けられた第１母屋受け金具１１１に締結具２００で締結して固定されることにより、既存軒先１００の１段上に設置されている（図１参照）。
【００２０】
第１母屋受け金具１１１は、図７に示すように、斜辺が長辺に対して略４５°の角度をなす略台形の平部１１２と、該平部１１２の長辺から略９０°の角度をなして上向きに立ち上がり、端部に貫通孔１１３ａが穿設された第１母屋受け部１１３とを有している。第１母屋受け金具１１１の既存軒先梁１０２への固定は溶接により行われ、２個の第１母屋受け金具１１１は、各第１母屋受け部１１３が既存軒先梁１０２の長軸線Ｌに対して対称となるように、即ち、第１母屋受け部１１３どうしが略９０°の角度をなすように、既存軒先梁１０２の両側面に設けられている。
【００２１】
既存第１母屋１１０の第１母屋受け金具１１１への固定は、図６に示すように、
既存第１母屋１１０の先端を既存軒先梁１０２の増築部側面に当接させ、既存第１母屋１１０の端部を第１母屋受け金具１１１の平部１１２に載置し、第１母屋受け金具１１１の第１母屋受け部１１３に締結具２００で締結することにより行う。これにより、既存第１母屋１１０と増築部側の既存第１母屋１１４とが同一面に、かつ、略９０°の角度をなして既存軒先梁１０２に配置される。
【００２２】
第１母屋延長金具１１は、図８に示すように、斜辺が長辺に対して略４５°の角度をなす略台形の蓋部１３と、該蓋部１３の短辺から略９０°の角度をなして下向きに垂れ下がり、下隅角部に貫通孔１４ａが穿設された第１母屋受け接続部１４とを有する第１母屋受け接続部材１５と、斜辺が長辺に対して略４５°の角度をなす略台形の底部１６と、該底部１６の短辺から略９０°の角度をなして上向きに立ち上がり、上隅角部に貫通孔１７ａが穿設された第１母屋接続部１７とを有する第１母屋接続部材１８と、略長方形の添え部１９と、蓋部１３の斜辺と対向する縁辺及び第１母屋受け接続部１４の縁辺に固着された略長方形の補強部２０とを有しており、添え部１９の表面に底部１６の斜辺及び第１母屋接続部１７の縁辺及び蓋部１３の斜辺を固着することにより形成したものである。
【００２３】
第１母屋延長金具１１の増築部側の第１母屋受け金具１１１への固定は、図９に示すように、第１母屋延長金具１１の第１母屋受け接続部材１５を第１母屋受け金具１１１の第１母屋受け部１１３に上方から被せて、第１母屋受け金具１１１の第１母屋受け部１１３の平部１１２側面に第１母屋延長金具１１の第１母屋受け接続部材１５の第１母屋受け接続部１４をあてがうとともに、既存軒先梁１０２の増築部側面に第１母屋延長金具１１の添え部１９の裏面をあてがい、第１母屋受け金具１１の第１母屋受け部１１３に第１母屋延長金具１１の第１母屋受け接続部１４を締結具（図示せず）で締結して固定することにより行う。
【００２４】
このとき、第１母屋延長金具１１の第１母屋受け接続部材１５の折曲部の長さを、第１母屋受け金具１１１の第１母屋受け部１１３の上縁辺と略等しくしておくと、第１母屋延長金具１１を第１母屋受け金具１１１に固定したときに、第１母屋延長金具１１の第１母屋受け接続部材１５が、既存軒先梁１０２と第１母屋延長金具１１の補強部２０とで挟まれた状態となるので、第１母屋延長金具１１を第１母屋受け金具１１１に安定良く設置することができる（図１０参照）。
【００２５】
これにより、図１０に示すように、第１母屋延長金具１１の第１母屋接続部材１８の折曲部２１は、既存第１母屋１１０の方の第１母屋受け金具１１１の折曲部１１５と略同一面に、かつ、その延長線上に配置される。
【００２６】
新規第１母屋１０の端部１２の第１母屋延長金具１１への接続は、図１０に示すように、第１母屋延長金具１１を第１母屋受け金具１１１に固定した後、第１母屋延長金具１１の第１母屋接続部材１８に新規第１母屋１０の端部１２を載置し、該新規第１母屋１０の端部１２の貫通孔１２ａと第１母屋延長金具１１の第１母屋接続部１７の貫通孔１７ａとを締結具２００で締結することにより行う。これにより、図６に示すように、新規第１母屋１０が既存第１母屋１１０の延長上に設置される。
【００２７】
以上により、図１に示すように、既存住宅の増築部側の母屋の設置方向が略９０°変更されて、新規第１母屋１０が既存第１母屋１１０と同一面に配置される、即ち、既存第１母屋１１０が増築部側へ延長されたこととなる。
【００２８】
次に、本発明の第３の実施形態の母屋の延長工法は、図１に示すように、既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規第２母屋３０を既存住宅の既存第２母屋１２０と同一面に配置するものであって、図１１に示すように、既存隅木梁１０１と既存軒先梁１０２との接続部近傍に設置された第２母屋受け金具１２１に第２母屋延長金具３１を固定し、該第２母屋延長金具３１に新規第２母屋３０の端部３２を接続することにより、新規第２母屋３０を既存第２母屋１２０の延長上に設置することにより行う。新規第２母屋３０は、長尺の木角材であって、端部３２には貫通孔３２ａが穿設されている（図１５参照）。
【００２９】
既存第２母屋１２０は、既存軒先母屋１００及び既存第１母屋１１０と同様の構成であって、図１１に示すように、端部を既存隅木梁１０１の既存軒先梁１０１との接続部近傍に設けられた第２母屋受け金具１２１に締結具２００で締結して固定されることにより、既存軒先母屋１００の２段上に設置されている（図１参照）。
【００３０】
第２母屋受け金具１２１は、図１２に示すように、互いに略９０°をなす２つの縁辺を有する略六角形の平部１２２と、該各平部１２２の縁辺からそれぞれ略９０°をなして上向きに立ち上がり、上端部に貫通孔１２３ａが穿設された第２母屋受け部１２３とを有している。第２母屋受け金具１２１の既存隅木梁１０１への固定は溶接により行われ、第２母屋受け金具１２１の２個の第２母屋受け部１２３が互いに既存隅木梁１０１の長軸線Ｌに対して対称となるように既存隅木梁１０１の上面に設けられている。
【００３１】
既存第２母屋１２０の第２母屋受け金具１２１への固定は、図１１に示すように、、既存第２母屋１２０の先端と増築部側の既存第２母屋１２４の先端とが略合致するように、既存第２母屋１２０の端部及び増築部側の既存第２母屋１２４の端部をそれぞれ第２母屋受け金具１２１の平部１２２に載置するとともに、各第２母屋受け部１２３に締結具２００で締結して固定することにより行う。これにより、既存第２母屋１２０と増築部側の既存第２母屋１２４とが同一面に、かつ、略９０°の角度をなして既存隅木梁１０１に配置される。
【００３２】
第２母屋延長金具３１は、図１３に示すように、第２の実施形態の第１母屋延長金具１１と同様の構成であり、蓋部３３と貫通孔３４ａが穿設された第２母屋受け接続部３４とを有する第２母屋受け接続部材３５と、底部３６と貫通孔３７ａが穿設された第２母屋接続部３７とを有する第２母屋接続部材３８と、添え部３９と、補強部４０とを有しており、添え部３９の表面に底部３６の斜辺、第２母屋接続部３４の縁辺及び蓋部３３の斜辺を固着することにより形成したものである。
【００３３】
第２母屋延長金具３１の第２母屋受け金具１２１への固定においても、図１４に示すように、第２の実施形態と同様であり、第２母屋延長金具３１の第２母屋受け接続部材３５を第２母屋受け金具１２１の第２母屋受け部１２３に上方から被せて、第２母屋受け金具１２１の第２母屋受け部１２３に第２母屋延長金具３１の第２母屋受け接続部３４を締結具（図示せず）で締結して固定することにより行う。
【００３４】
このとき、第２母屋延長金具３１の第２母屋受け接続部材３５の折曲部の長さを、第２母屋延長金具３１を第２母屋受け金具１２１に固定したときの添え部３９から第２母屋受け部１２３の既存隅木梁１０１と対向する縁辺までの距離と略等しくしておくと、第２母屋延長金具３１を第２母屋受け金具１２１に固定したときに、第２母屋延長金具３１の第２母屋受け接続部材３５が、第２母屋延長金具３１の添え部４０と補強部４０とで挟まれた状態となるので、第２母屋延長金具３１を第２母屋受け金具１２１に安定良く設置することができる（図１５参照）。
【００３５】
これにより、図１５に示すように、第２母屋延長金具３１の第２母屋接続部材３８の折曲部４１が既存第２母屋１２０の方の折曲部１２５と略同一面に、かつ、その延長線上に配置される。
【００３６】
新規第２母屋３０の端部３２の第２母屋延長金具３１への接続は、図１５に示すように、第２母屋延長金具３１を第２母屋受け金具１２１に固定した後、第２母屋延長金具３１の第２母屋接続部材３８に新規第２母屋３０の端部３２を載置し、該新規第２母屋３０の端部３２の貫通孔３２ａと第２母屋延長金具３１の第２母屋接続部３７の貫通孔３７ａとを締結具２００で締結することにより行う。これにより、図１１に示すように、新規第２母屋３０が既存第２母屋１２０の延長上に設置される。
【００３７】
以上により、図１に示すように、既存住宅の増築部側の母屋の設置方向が略９０°変更されて、新規第２母屋３０が既存第２母屋１２０と同一面に配置される、即ち、既存第１母屋１２０が増築部側へ延長されたこととなる。
【００３８】
次に、本発明の第４の実施形態の母屋の延長工法は、図１に示すように、既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規一般母屋５０を既存住宅の既存一般母屋１３０と同一面に配置するものであって、図１６に示すように、既存隅木梁１０１に設置された一般母屋受け金具１３１に一般母屋延長金具５１を固定し、該一般母屋延長金具５１に新規一般母屋５０の端部５２を接続することにより、新規一般母屋５０を既存一般母屋１３０の延長上に設置することにより行う。なお、新規一般母屋５０は、長尺の木角材であって、端部５２には貫通孔５２ａが穿設されている（図２０参照）。
【００３９】
既存一般母屋１３０は、既存軒先母屋１００、既存第１母屋１１０及び既存第２母屋１２０と同様の構成であって、図１６に示すように、端部を既存隅木梁１０１に設けられた一般母屋受け金具１３１に締結具２００で締結して固定されることにより、既存軒先母屋１００の３段以上に設置されている（図１参照）。
【００４０】
一般母屋受け金具１３１は、図１７に示すように、第３の実施形態の第２母屋受け金具１２１と同様の構成であり、互いに略９０°をなす２つの縁辺を有する略六角形の平部１３２と、該各平部１３２の縁辺からそれぞれ略９０°をなして上向きに立ち上がり、上端部に貫通孔１３３ａが穿設された一般母屋受け部１３３とを有している。一般母屋受け金具１３１の既存隅木梁１０１への固定は溶接により行われ、一般母屋受け金具１３１の２個の一般母屋受け部１３３が互いに既存隅木梁１０１の長軸線Ｌに対して対称となるように既存隅木梁１０１の上面に設けられている。
【００４１】
既存一般母屋１３０の一般母屋受け金具１３１への固定も、図１６に示すように、第３の実施形態と同様に、既存一般母屋１３０の端部及び増築部側の既存一般母屋１３４の端部をそれぞれ一般母屋受け金具１３１の平部１３２に載置するとともに、各一般母屋受け部１３３に締結具２００で締結して固定することにより行う。これにより、既存一般母屋１３０と増築部側の既存一般母屋１３４とが同一面に、かつ、略９０°の角度をなして既存隅木梁１０１に配置される。
【００４２】
一般母屋延長金具５１は、図１８に示すように、斜辺が長辺に対して略４５°の角度をなし、上隅角部に貫通孔５３ａが穿設された略台形の一般母屋受け接続部５３と、略長方形状の底部５４と、該底部５４の長辺から略９０°の角度をなして上向きに立ち上がり、上隅角部に貫通孔５５ａが穿設された斜辺が長辺に対して略４５°の角度をなす略台形の一般母屋接続部５５とを有する一般母屋接続部材５６と、一般母屋受け接続部５６の斜辺と対向する縁辺に固着された補強部５７とを有しており、一般母屋受け接続部５３の斜辺と一般母屋接続部５５の斜辺とを略合致させて固着することにより形成したものである。
【００４３】
一般母屋延長金具５１の一般母屋受け金具１３１への固定は、図１９に示すように、一般母屋受け金具１３１の増築部側の一般母屋受け部１３３の平部１３２側面に一般母屋延長金具５１の一般母屋受け接続部５３をあてがい、一般母屋受け金具１３１の一般母屋受け部１３３に一般母屋延長金具５１の一般母屋受け接続部５３を締結具（図示せず）で締結して固定することにより行う。
【００４４】
このとき、一般母屋延長金具５１の一般母屋受け接続部５３の上縁辺の長さを、一般母屋延長金具５１を一般母屋受け金具１３１に固定したときに、一般母屋受け接続部５３の斜辺が既存一般母屋１３０の先端に当接する長さとしておくと、一般母屋延長金具５１の補強部５７に一般母屋受け金具１３１の一般母屋受け部１３３の既存隅木梁１０１と対向する縁辺が当接することとなり、一般母屋延長金具５１の一般母屋受け接続部５３が、既存一般母屋１３０と一般母屋延長金具５１の補強部５７とで挟まれた状態となるので、一般母屋延長金具５１を一般母屋受け金具１３１に安定良く設置することができる（図２０参照）。
【００４５】
これにより、図２０に示すように、一般母屋延長金具５１の一般母屋接続部材５６の折曲部５８が一般母屋受け金具１３１の既存般母屋１３０の方の折曲部１３５と略同一面に、かつ、その延長線上に配置される。
【００４６】
新規一般母屋５０の端部５２の一般母屋延長金具５１への接続は、図２０に示すように、一般母屋延長金具５１を一般母屋受け金具１３１に固定した後、一般母屋延長金具５１の一般母屋接続部材５６に新規一般母屋５０の端部５２を載置し、該新規一般母屋５０の端部５２の貫通孔５２ａと一般母屋延長金具５１の一般母屋接続部５５の貫通孔５５ａとを締結具２００で締結することにより行う。これにより、図１６に示すように、新規一般母屋５０が既存一般母屋１３０の延長上に設置される。
【００４７】
以上により、図１に示すように、既存住宅の増築部側の母屋の設置方向が略９０°変更されて、新規一般母屋５０が既存一般母屋１３０と同一面に配置される、即ち、既存一般母屋１３０が増築部側へ延長されたこととなる。
【００４８】
【発明の効果】
以上説明したように、本発明の請求項１に記載の母屋の延長工法は、既存住宅と増築部の境界に位置する既存隅木梁に設置された母屋受け金具に設置される母屋受け接続部と該母屋受け接続部と略９０°をなす母屋接続部とを有する母屋延長金具を用い、母屋受け金具と母屋受け接続部とを締結具で締結することにより、母屋受け金具に母屋受け接続部を固定し、母屋接続部と新規母屋の端部とを締結具で締結することにより、新規母屋を既存母屋の延長上に設置するので、既存住宅の小屋組を全面的に解体し、既存住宅の既存母屋を全て撤去することなく、既存住宅の増築部側の母屋の設置方向を略９０°変更して増築部の新規母屋を既存住宅の既存母屋と略同一面に配置することができるという利点がある。
【００４９】
このため、施工期間を短縮することができるだけでなく、労力を削減しながら作業性を向上させることができるという利点がある。
【００５０】
更に、既存住宅の小屋組を全面的に解体しないので、産業廃棄物の発生量を減少させることができるだけでなく、これを運搬して処理するための費用を削減することができるという利点がある。
【００５１】
そして、施工期間の短縮化により顧客に不便を強いる期間が短くなり、顧客の負担を軽減させることができるという利点がある。
【００５２】
即ち、本発明の母屋の延長工法によれば、住宅の増築工事において、施工の省力化、コストダウン及び廃棄物の削減を図ることができるという利点がある。
【図面の簡単な説明】
【図１】本発明の実施の形態に係る小屋組全体の概略を示す平面図である。
【図２】本発明の第１の実施形態を示す平面図である。
【図３】軒先母屋受け金具及び軒先母屋延長金具を示す斜視図である。
【図４】軒先母屋延長金具の軒先母屋受け金具への固定手順を示す説明図である。
【図５】新規軒先母屋の軒先母屋延長金具への接続手順を示す説明図である。
【図６】本発明の第２の実施形態を示す平面図である。
【図７】第１母屋受け金具を示す平面図である。
【図８】第１母屋延長金具を示す斜視図である。
【図９】第１母屋延長金具の第１母屋受け金具への固定手順を示す説明図である。
【図１０】新規第１母屋の第１母屋延長金具への接続手順を示す説明図である。
【図１１】本発明の第３の実施形態を示す平面図である。
【図１２】第２母屋受け金具を示す平面図である。
【図１３】第２母屋延長金具を示す斜視図である。
【図１４】第２母屋延長金具の第２母屋受け金具への固定手順を示す説明図である。
【図１５】新規第２母屋の第２母屋延長金具への接続手順を示す説明図である。
【図１６】本発明の第４の実施形態を示す平面図である。
【図１７】一般母屋受け金具を示す平面図である。
【図１８】一般母屋延長金具を示す斜視図である。
【図１９】一般母屋延長金具の一般母屋受け金具への固定手順を示す説明図である。
【図２０】新規一般母屋の一般母屋延長金具への接続手順を示す説明図である。
【符号の説明】
１，１０，３０，５０　新規母屋
２，１１，３１，５１　母屋延長金具
４，１４，３４，５３　母屋受け接続部
５，１７，３７，５５　母屋接続部
１００，１１０，１２０，１３０　既存母屋
１０１　既存隅木梁
１０３，１１１，１２１，１３１　母屋受け金具
２００　締結具[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an extension method of a main building that can extend a main building without completely disassembling a hut set of an existing house at the time of extension work when expanding a house.
[0002]
[Prior art]
When an extension is added to the girder side of a house with a built-in ridge, the whole hut frame structure often changes after the extension compared to before the extension because the ridge height or ridge direction changes (see Fig. 1). .
[0003]
In such a case, when the new main building of the extension is located on the same plane as the existing main building of the existing house, it is necessary to change the installation direction of the main building on the extension section side of the existing house by approximately 90 °. For this reason, conventionally, the hut group of the existing house was completely dismantled, all the existing trusses were removed, and a new hut group and a new main building corresponding thereto were reconstructed.
[0004]
[Problems to be solved by the invention]
However, the existing house hut was completely dismantled, and all existing trusses were removed, and a new hut and a corresponding new truss were rebuilt, requiring a lot of time and labor. There is a problem that not only the period becomes long but also the workability is poor.
[0005]
Furthermore, the complete dismantling of the huts of existing houses and the removal of all existing main buildings generate a large amount of industrial waste, which is costly to transport and dispose of. was there.
[0006]
Furthermore, in many cases, it is desirable that the extension work be completed in a short period of time because the customer lives in the existing house even during the extension work. There has been a problem that the period of inconvenience is prolonged and the burden on the customer is increased.
[0007]
The present invention has been made in view of the above-mentioned problems, and has as its object to provide a method for extending a purlin that aims to save labor, reduce costs, and reduce waste in extension work of a house.
[0008]
[Means for Solving the Problems]
According to the extension method of a purlin according to claim 1 of the present invention which has been made to achieve the above object, the extension direction of the purlin on the side of the extension section of the existing house is changed by approximately 90 ° when the extension of the house is carried out. This is a method of extending the main building that places the new main building on the same plane as the existing main building of the existing house. The main building is installed on the main building receiving bracket installed on the existing corner beam located at the boundary between the existing house and the extension. By using a purlin extension fitting having a receiving connection part and a purlin connection part forming an angle of about 90 ° with the purlin receiving connection part, the purlin receiving fitting and the purlin receiving connection part are fastened with fasteners, whereby the purlin receiving part is formed. The new purlin is installed on an extension of the existing purlin by fixing the purlin receiving connection part to a metal fitting and fastening the purlin connection part and an end of the new purlin with a fastener. Things.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the extension method of the main building according to the first embodiment of the present invention changes the installation direction of the main building on the side of the extension of the existing house by approximately 90 °, and replaces the new eaves main building 1 of the extension with the existing house. 2 is located on the same plane as the existing eaves main house 100, and is provided at the eaves of an existing corner beam 101 (not shown) located at the boundary between the existing house and the extension as shown in FIG. The eaves purlin extension fitting 2 is fixed to the eaves purlin receiving fitting 103 installed at the tip of the existing eaves beam 102, and the end 3 of the new eaves purlin 1 is connected to the eaves purlin receiving fitting 2, whereby the new eaves purlin 1 is connected. Is installed on an extension of the existing eaves purlin 100. In addition, the existing corner beam 101 and the existing eaves beam 102 shown in each of the embodiments are two C-shaped steels fastened by bolts, and extend from the end of the existing large building toward the corner of the eaves. It is provided so as to be taken out in a direction of 45 ° (see FIG. 1).
[0010]
As shown in FIG. 3, the existing eaves purlin 100 is a long wooden timber having a tip formed in a predetermined shape, and an end of the eaves purlin 100 is provided with bolts and nuts on eaves purlin receiving fittings 103 provided at the end of the existing eaves beam 102. Is installed on the existing eaves beam 102 by being fastened and fixed by a fastener 200 composed of (see FIG. 1).
[0011]
As shown in FIG. 3, the eaves front purlin receiving bracket 103 is bent at an angle of about 90 ° at the center, and a chevron plate 104 having through holes 104 a formed at both ends, and a bend of the chevron plate 104. A substantially rectangular connection plate 106 having one edge fixed to the inside corner of the portion 105 is provided. The fixing of the eaves purlin receiving bracket 103 to the existing eaves beam 102 is performed by inserting the other end of the connection plate 106 from the tip of the existing eaves beam 102 between the two C-shaped steels of the existing eaves beam 102, Is fixed to the tip of the existing eaves beam 102 by bolting.
[0012]
As shown in FIG. 2, the fixing of the existing eaves purlin 100 to the eaves purlin receiving fitting 103 is performed such that the tip of the existing eaves purlin 100 substantially matches the tip of the existing eaves purlin 107 on the extension side. The end of the existing eaves purlin 100 and the end of the existing eaves purlin 107 on the extension side are respectively applied to both outer surfaces of the angled plate 104 of the metal fitting 103, and are fastened and fastened with the fastener 200. As a result, the existing eaves main house 100 and the existing eaves main house 107 on the extension part side are arranged on the same plane and at an end of the existing eaves front beam 102 at an angle of about 90 °.
[0013]
The new eaves purlin 1 is, like the existing eaves purlin 100 shown in FIG. 3, a long wooden timber having a tip formed in a predetermined shape, and a through hole 3 a is formed in the end 3 ( (See FIG. 5).
[0014]
As shown in FIG. 3, the eaves purlin extension metal fitting 2 is formed by twisting a single plate having through holes 4a, 5a formed at both ends at a central portion so as to form an angle of about 90 °. One of them is an eaves front purlin connection section 4, and the other is an eaves front purlin connection section 5.
[0015]
As shown in FIG. 4, the eaves truss extension fitting 2 is fixed to the eaves truss reception fitting 103, as shown in FIG. The side surface 4 is applied so that the bent part 105 of the eaves purlin receiving fitting 103 and the bent part 6 of the eaves purlin extension fitting 2 substantially match, and the through hole 104a of the chevron plate 104 of the eaves purlin receiving fitting 103 and the eaves purlin. This is performed by fastening the through-hole 4a of the eaves front purlin receiving connection portion 4 of the extension metal fitting 2 with the fastener 200. As a result, as shown in FIG. 5, the eaves purlin connecting portion 5 of the eaves purlin extension fitting 2 and the side surface of the chevron plate 104 of the eaves purlin receiving fitting 103 on the side of the existing eaves purlin 100 are substantially flush with each other. Placed in
[0016]
As shown in FIG. 5, the end 3 of the new eaves purlin 1 is connected to the eaves purlin extension fitting 2 by fixing the eaves purlin extension fitting 2 to the eaves purlin receiving fitting 103, and then connecting the tip of the existing eaves purlin 100 with a new one. The end 3 of the new eaves purlin 1 is applied to the eaves purlin connecting part 5 of the eaves purlin extension fitting 2 so that the tip of the eaves purlin 1 is substantially aligned with the through hole 3a of the end 3 of the new eaves purlin 1. This is performed by fastening the through hole 5 a of the eaves front purlin connecting portion 5 of the eaves front purlin extension fitting 2 with the fastener 200. Thereby, as shown in FIG. 2, the new eaves purlin 1 is installed on the extension of the existing eaves purlin 100.
[0017]
As described above, as shown in FIG. 1, the installation direction of the main house on the extension part side of the existing house is changed by approximately 90 °, and the new eaves main house 1 is arranged on the same plane as the existing eaves main house 100, that is, the existing eaves main house 100 is arranged. The main building 100 has been extended to the extension unit side.
[0018]
Next, in the extension method of the main building according to the second embodiment of the present invention, as shown in FIG. 1, the installation direction of the main building on the extension unit side of the existing house is changed by approximately 90 °, and the new first main building of the expansion unit is changed. 10 is arranged on the same plane as the existing first main house 110 of the existing house, and is installed at the end of the existing eave beam 102 on the side of the existing corner beam 100 (not shown) as shown in FIG. By fixing the first purlin extension fitting 11 to the first purlin receiving bracket 111 and connecting the end portion 12 of the new first purlin 10 to the first purlin extension fitting 11, the new first purlin 10 is connected to the existing first purlin. It is performed by being installed on an extension of the purlin 110. The new first purlin 10 is a long wooden timber, and a through hole 12a is formed in the end 12 (see FIG. 10).
[0019]
The existing first main house 110 has the same configuration as the existing eaves main house 100, and has a fastener 200 attached to a first main house receiving bracket 111 provided at a predetermined position of the existing eaves front beam 102, as shown in FIG. 6. It is installed one step above the existing eaves 100 by being fastened and fixed (see FIG. 1).
[0020]
As shown in FIG. 7, the first purlin receiving bracket 111 has a substantially trapezoidal flat portion 112 whose oblique side forms an angle of approximately 45 ° with the long side, and an angle of approximately 90 ° from the long side of the flat portion 112. And a first purlin receiving portion 113 having a through hole 113a formed at an end thereof. The first purlin receiving bracket 111 is fixed to the existing eave beam 102 by welding, and the two first purlin receiving members 111 are arranged such that each of the first purlin receiving portions 113 is aligned with the long axis L of the existing eave beam 102. The first eaves receiving portions 113 are provided on both side surfaces of the existing eaves beam 102 so that the first purlin receiving portions 113 form an angle of about 90 °.
[0021]
The fixing of the existing first purlin 110 to the first purlin receiving bracket 111 is performed as shown in FIG.
The tip of the existing first purlin 110 is brought into contact with the side of the extension section of the existing eaves beam 102, and the end of the existing first purlin 110 is placed on the flat portion 112 of the first purlin receiving bracket 111, and the first purlin receiving bracket is placed. This is performed by fastening to the first purlin receiving portion 113 of the base 111 with the fastener 200. As a result, the existing first main house 110 and the existing first main house 114 on the extension part side are arranged on the existing eave beam 102 at the same plane and at an angle of about 90 °.
[0022]
As shown in FIG. 8, the first purlin extension metal fitting 11 has a substantially trapezoidal lid 13 whose oblique side forms an angle of about 45 ° with the long side, and an angle of about 90 ° from the short side of the lid 13. A first purlin receiving connection member 15 having a first purlin receiving connection portion 14 that hangs downward and has a through hole 14a formed in a lower corner portion, and an oblique side having an angle of approximately 45 ° with respect to the long side. And a first purlin connection portion 17 that rises upward at an angle of approximately 90 ° from a short side of the bottom portion 16 and has a through hole 17a formed in an upper corner portion. It has a first purlin connecting member 18, a substantially rectangular attachment portion 19, and a substantially rectangular reinforcing portion 20 fixed to an edge of the lid 13 facing the oblique side and an edge of the first purlin receiving connection 14. The oblique side of the bottom 16, the edge of the first purlin connection 17 and the cover 13 It is obtained by forming by fixing the edges.
[0023]
As shown in FIG. 9, the first purlin extension fitting 11 is fixed to the first purlin receiving fitting 111 on the extension side by connecting the first purlin receiving connecting member 15 of the first purlin extension fitting 11 to the first purlin receiving fitting 111. The first purlin receiving portion 113 of the first purlin extension fitting 11 is provided on the side of the flat portion 112 of the first purlin receiving portion 113 of the first purlin receiving portion 111 from above. The receiving connection part 14 is applied, and the back side of the attachment part 19 of the first purlin extension metal fitting 11 is applied to the side of the extension part of the existing eaves beam 102, and the first purlin receiving part 113 of the first purlin receiving metal fitting 11 is extended to the first purlin receiving part 113. This is performed by fastening and fixing the first purlin receiving connection portion 14 of the metal fitting 11 with a fastener (not shown).
[0024]
At this time, if the length of the bent portion of the first purlin receiving connection member 15 of the first purlin extension metal fitting 11 is made substantially equal to the upper edge of the first purlin receiving part 113 of the first purlin receiving metal fitting 111, When the first purlin extension metal fitting 11 is fixed to the first purlin receiving metal fitting 111, the first purlin receiving connection member 15 of the first purlin extending metal fitting 11 is connected to the existing eave beam 102 and the reinforcing portion 20 of the first purlin extending metal fitting 11. Thus, the first purlin extension metal fitting 11 can be stably installed on the first purlin receiving metal fitting 111 (see FIG. 10).
[0025]
Thereby, as shown in FIG. 10, the bent portion 21 of the first purlin connecting member 18 of the first purlin extension metal fitting 11 is connected to the bent portion 115 of the first purlin receiving metal fitting 111 of the existing first purlin 110. They are arranged on substantially the same plane and on an extension thereof.
[0026]
As shown in FIG. 10, the end 12 of the new first purlin 10 is connected to the first purlin extension fitting 11 by fixing the first purlin extension fitting 11 to the first purlin receiving fitting 111 and then extending the first purlin extension. The end portion 12 of the new first purlin 10 is placed on the first purlin connecting member 18 of the metal fitting 11, and the through hole 12 a of the end portion 12 of the new first purlin 10 is connected to the first purlin extension metal fitting 11. This is performed by fastening the through hole 17a of the portion 17 with the fastener 200. Thereby, as shown in FIG. 6, the new first purlin 10 is installed on an extension of the existing first purlin 110.
[0027]
As described above, as shown in FIG. 1, the installation direction of the main building on the extension unit side of the existing house is changed by approximately 90 °, and the new first main building 10 is arranged on the same plane as the existing first main building 110, that is, This means that the existing first main building 110 has been extended to the extension unit side.
[0028]
Next, in the extension method of the purlin according to the third embodiment of the present invention, as shown in FIG. 1, the setting direction of the purlin on the extension part side of the existing house is changed by approximately 90 °, and the new second purlin of the extension part is changed. 30 is arranged on the same plane as the existing second main house 120 of the existing house, and as shown in FIG. 11, the second main house receiving part is installed near the connection between the existing corner beam 101 and the existing eave beam 102. By fixing the second purlin extension metal fitting 31 to the metal fitting 121 and connecting the end 32 of the new second purlin 30 to the second purlin extending metal fitting 31, the new second purlin 30 is extended over the existing second purlin 120. It is carried out by setting it up. The new second purlin 30 is a long wooden timber, and has a through hole 32a at the end 32 (see FIG. 15).
[0029]
The existing second main house 120 has the same configuration as the existing eaves main house 100 and the existing first main house 110. As shown in FIG. 11, the end portion is located near the connection between the existing corner beam 101 and the existing eaves front beam 101. By being fastened and fixed to the provided second purlin receiving fitting 121 with the fastener 200, it is installed two steps above the existing eaves purlin 100 (see FIG. 1).
[0030]
As shown in FIG. 12, the second purlin receiving bracket 121 forms a substantially hexagonal flat portion 122 having two edges forming approximately 90 ° with each other, and forms approximately 90 ° from the edge of each flat portion 122. It has a second purlin receiving portion 123 that rises upward and has a through hole 123a formed at the upper end. The fixing of the second purlin receiving member 121 to the existing corner beam 101 is performed by welding, and the two second purlin receiving portions 123 of the second purlin receiving member 121 are mutually symmetrical with respect to the long axis L of the existing corner beam 101. It is provided on the upper surface of the existing corner beam 101 so that
[0031]
As shown in FIG. 11, the fixing of the existing second purlin 120 to the second purlin receiving fitting 121 is performed so that the distal end of the existing second purlin 120 substantially matches the distal end of the existing second purlin 124 on the extension unit side. In addition, the end of the existing second purlin 120 and the end of the existing second purlin 124 on the extension part side are respectively placed on the flat part 122 of the second purlin receiving fitting 121 and fastened to each second purlin receiving part 123. This is performed by fastening and fixing with the tool 200. As a result, the existing second main house 120 and the existing second main house 124 on the extension side are arranged on the existing corner beam 101 at the same plane and at an angle of about 90 °.
[0032]
As shown in FIG. 13, the second purlin extension metal fitting 31 has the same configuration as the first purlin extension metal fitting 11 of the second embodiment, and has a second purlin support in which a lid 33 and a through hole 34 a are formed. A second purlin connection member 38 having a connection part 34, a second purlin connection member 38 having a bottom 36 and a second purlin connection part 37 having a through hole 37 a formed therein, an attachment part 39, and a reinforcing part 40, and is formed by fixing the hypotenuse of the bottom part 36, the edge of the second purlin connection part 34, and the hypotenuse of the lid 33 to the surface of the attachment part 39.
[0033]
The fixing of the second purlin extension metal fitting 31 to the second purlin receiving metal fitting 121 is the same as that of the second embodiment, as shown in FIG. 14, and the second purlin extending metal fitting 31 has the second purlin receiving connecting member 35. Over the second purlin receiving portion 123 of the second purlin receiving bracket 121 from above, and fasten the second purlin receiving connecting portion 34 of the second purlin extension fitting 31 to the second purlin receiving portion 123 of the second purlin receiving bracket 121. This is performed by fastening and fixing with a tool (not shown).
[0034]
At this time, the length of the bent portion of the second purlin extension connecting member 35 of the second purlin extension fitting 31 is set to the second value from the attachment 39 when the second purlin extension fitting 31 is fixed to the second purlin receiving fitting 121. When the distance to the edge of the purlin receiving portion 123 facing the existing corner beam 101 is set to be substantially equal, when the second purlin extension fitting 31 is fixed to the second purlin receiving fitting 121, Since the second purlin receiving connection member 35 is sandwiched between the attachment part 40 and the reinforcing part 40 of the second purlin extension fitting 31, the second purlin extension fitting 31 is stably installed on the second purlin receiving fitting 121. (See FIG. 15).
[0035]
Thereby, as shown in FIG. 15, the bent portion 41 of the second purlin connecting member 38 of the second purlin extension metal fitting 31 is substantially flush with the bent portion 125 of the existing second purlin 120, and It is arranged on the extension line.
[0036]
The connection of the end 32 of the new second purlin 30 to the second purlin extension fitting 31 is performed by fixing the second purlin extension fitting 31 to the second purlin receiving fitting 121 as shown in FIG. The end 32 of the new second purlin 30 is placed on the second purlin connecting member 38 of the metal fitting 31, and the through hole 32 a of the end 32 of the new second purlin 30 is connected to the second purlin extension metal fitting 31. This is performed by fastening the through hole 37a of the portion 37 with the fastener 200. Thereby, as shown in FIG. 11, the new second purlin 30 is installed on an extension of the existing second purlin 120.
[0037]
As described above, as shown in FIG. 1, the installation direction of the main house on the extension unit side of the existing house is changed by approximately 90 °, and the new second main house 30 is arranged on the same plane as the existing second main house 120, that is, This means that the existing first main building 120 has been extended to the extension unit side.
[0038]
Next, in the extension method of the purlin according to the fourth embodiment of the present invention, as shown in FIG. 1, the installation direction of the purlin on the extension part side of the existing house is changed by approximately 90 °, and the new general purlin 50 of the extension part is changed. Is arranged on the same plane as the existing general purlin 130 of the existing house. As shown in FIG. 16, the general purlin extension metal fitting 51 is fixed to the general purlin receiving metal fitting 131 installed on the existing corner beam 101, and By connecting the end 52 of the new general purlin 50 to the general purlin extension metal fitting 51, the new general purlin 50 is installed on an extension of the existing general purlin 130. The new general purlin 50 is a long wooden timber, and a through hole 52a is formed in the end 52 (see FIG. 20).
[0039]
The existing general main building 130 has the same configuration as the existing eaves main building 100, the existing first main building 110, and the existing second main building 120, and has a general main building whose end is provided in the existing corner beam 101 as shown in FIG. 16. By being fastened and fixed to the receiving metal fitting 131 with the fastener 200, it is installed at three or more steps of the existing eaves purlin 100 (see FIG. 1).
[0040]
As shown in FIG. 17, the general purlin receiving bracket 131 has the same configuration as the second purlin receiving bracket 121 of the third embodiment, and has a substantially hexagonal flat portion having two edges forming substantially 90 ° with each other. 132, and a general purlin receiving portion 133 which rises upward at an angle of approximately 90 ° from the edge of each flat portion 132 and has a through hole 133a formed at the upper end. The fixing of the general purlin receiving bracket 131 to the existing corner beam 101 is performed by welding, so that the two general purlin receiving portions 133 of the general purlin receiving bracket 131 are symmetric with respect to the long axis L of the existing corner beam 101. Is provided on the upper surface of the existing corner beam 101.
[0041]
As shown in FIG. 16, similarly to the third embodiment, the fixing of the existing general purlin 130 to the general purlin receiving bracket 131 also includes the end of the existing general purlin 130 and the end of the existing general purlin 134 on the extension unit side. Are respectively placed on the flat portions 132 of the general purlin receiving fittings 131, and are fixed to the general purlin receiving portions 133 by fastening with the fasteners 200. As a result, the existing general purlin 130 and the existing general purlin 134 on the extension part side are arranged on the same corner and at an angle of about 90 ° in the existing corner beam 101.
[0042]
As shown in FIG. 18, the general purlin extension fitting 51 has a substantially trapezoidal general purlin receiving connection portion in which the oblique side forms an angle of approximately 45 ° with the long side and a through hole 53 a is formed in the upper corner. 53, a substantially rectangular bottom portion 54, and an upwardly rising portion forming an angle of approximately 90 ° from the long side of the bottom portion 54, and the oblique side having a through hole 55a formed in the upper corner portion corresponds to the long side. It has a general purlin connecting member 56 having a substantially trapezoidal general purlin connecting portion 55 forming an angle of approximately 45 °, and a reinforcing portion 57 fixed to an edge of the general purlin receiving connecting portion 56 facing the oblique side. It is formed by fixing the oblique side of the general purlin receiving connection portion 53 and the oblique side of the general purlin connecting portion 55 so as to substantially coincide with each other.
[0043]
As shown in FIG. 19, the fixing of the general purlin extension metal fittings 51 to the general purlin receiving metal fittings 131 is performed on the side of the flat part 132 of the general purlin receiving part 133 on the extension part side of the general purlin receiving metal fittings 131. The general purlin receiving connection portion 53 is applied, and the general purlin receiving connection portion 133 of the general purlin extension metal fitting 51 is fastened to the general purlin receiving portion 133 of the general purlin receiving fitting 131 by fastening with a fastener (not shown). .
[0044]
At this time, when the length of the upper edge of the general purlin extension fitting 51 of the general purlin extension fitting 51 is fixed to the general purlin extension fitting 51 to the general purlin receiving fitting 131, the hypotenuse of the general purlin receiving connection 53 is already existing. If the length of the general purlin 130 is set to be in contact with the tip, the edge of the general purlin receiving bracket 131 facing the existing corner beam 101 of the general purlin receiving part 133 comes into contact with the reinforcing portion 57 of the general purlin extension metal fitting 51, The general purlin extension fitting 51 has the general purlin receiving connection portion 53 sandwiched between the existing general purlin 130 and the reinforcing portion 57 of the general purlin extension metal fitting 51, so that the general purlin extension fitting 51 is connected to the general purlin receiving fitting 131. It can be installed stably (see FIG. 20).
[0045]
As a result, as shown in FIG. 20, the bent part 58 of the general purlin connecting member 56 of the general purlin extension metal fitting 51 is substantially flush with the bent part 135 of the general purlin receiving metal fitting 131 toward the existing general purlin 130. And it is arranged on the extension of that.
[0046]
As shown in FIG. 20, the end 52 of the new general purlin 50 is connected to the general purlin extension metal fitting 51 by fixing the general purlin extension metal fitting 51 to the general purlin receiving metal fitting 131 and then connecting the general purlin extension metal fitting 51 to the general purlin. The end 52 of the new general purlin 50 is placed on the connecting member 56, and the through hole 52 a of the end 52 of the new general purlin 50 and the through hole 55 a of the general purlin connecting part 55 of the general purlin extension fitting 51 are fastened. This is performed by fastening at 200. Thus, as shown in FIG. 16, the new general purlin 50 is installed on an extension of the existing general purlin 130.
[0047]
As described above, as shown in FIG. 1, the installation direction of the main house on the extension part side of the existing house is changed by approximately 90 °, and the new general house 50 is arranged on the same plane as the existing general house 130, that is, the existing general house 130 is arranged. The main building 130 has been extended to the extension unit side.
[0048]
【The invention's effect】
As described above, the extension method of the purlin according to claim 1 of the present invention is characterized in that the purlin receiving connection part is installed on the purlin receiving fitting installed on the existing corner beam located at the boundary between the existing house and the extension part. By using a purlin extension fitting having the purlin receiving connection part and a purlin connection part forming approximately 90 °, the purlin receiving fitting and the purlin receiving connecting part are fastened with fasteners, so that the purlin receiving fitting is connected to the purlin receiving fitting. The new main house is installed on an extension of the existing main house by fixing the main house connection part and the end of the new main house with fasteners. The advantage is that the installation direction of the main building on the extension part side of the existing house can be changed by approximately 90 ° without removing all the existing main building, and the new main building of the extension part can be placed on almost the same plane as the existing main building of the existing house. There is.
[0049]
Therefore, there is an advantage that not only the construction period can be shortened, but also the workability can be improved while reducing the labor.
[0050]
Furthermore, since the hut of an existing house is not completely dismantled, there is an advantage that not only the amount of industrial waste generated can be reduced, but also the cost for transporting and processing the waste can be reduced. .
[0051]
In addition, there is an advantage that the shortening of the construction period shortens the period of inconvenience to the customer, thereby reducing the burden on the customer.
[0052]
That is, according to the extension method of the purlin according to the present invention, there is an advantage that labor can be saved, cost can be reduced, and waste can be reduced in extension work of a house.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing an entire hut assembly according to an embodiment of the present invention.
FIG. 2 is a plan view showing the first embodiment of the present invention.
FIG. 3 is a perspective view showing an eaves front purlin receiving bracket and an eaves front purlin extension bracket.
FIG. 4 is an explanatory diagram showing a procedure for fixing an eaves truss extension fitting to an eaves truss receiving fitting.
FIG. 5 is an explanatory diagram showing a procedure for connecting a new eaves front purlin to an eaves front purlin extension fitting.
FIG. 6 is a plan view showing a second embodiment of the present invention.
FIG. 7 is a plan view showing a first purlin receiving fitting.
FIG. 8 is a perspective view showing a first purlin extension fitting.
FIG. 9 is an explanatory diagram showing a procedure for fixing the first purlin extension metal fitting to the first purlin receiving metal fitting.
FIG. 10 is an explanatory diagram showing a procedure for connecting a new first purlin to a first purlin extension.
FIG. 11 is a plan view showing a third embodiment of the present invention.
FIG. 12 is a plan view showing a second purlin receiving fitting.
FIG. 13 is a perspective view showing a second purlin extension fitting.
FIG. 14 is an explanatory diagram showing a procedure for fixing the second purlin extension metal fitting to the second purlin receiving metal fitting.
FIG. 15 is an explanatory diagram showing a procedure for connecting a new second purlin to a second purlin extension.
FIG. 16 is a plan view showing a fourth embodiment of the present invention.
FIG. 17 is a plan view showing a general purlin receiving fitting.
FIG. 18 is a perspective view showing a general purlin extension fitting.
FIG. 19 is an explanatory view showing a procedure for fixing a general purlin extension bracket to a general purlin receiving bracket.
FIG. 20 is an explanatory diagram showing a procedure for connecting a new general purlin to a general purlin extension.
[Explanation of symbols]
1, 10, 30, 50 New purlins 2, 11, 31, 51 Purlin extension fittings 4, 14, 34, 53 Purlin receiving connection parts 5, 17, 37, 55 Purlin connection parts 100, 110, 120, 130 Existing purlins 101 Existing corner beams 103, 111, 121, 131 Purlin receiving bracket 200 Fastener

Claims

An extension method of a main building in which an installation direction of a main building on the side of an extension of an existing house is changed by approximately 90 ° at the time of an extension of a house and a new main building of the extension is arranged on substantially the same plane as the existing main building of the existing house. ,
A purlin extension fitting having a purlin receiving connection installed on a purlin receiving fitting installed on an existing corner beam located at a boundary between an existing house and an extension part, and a purlin connecting part forming approximately 90 ° with the purlin receiving connection. Use, by fastening the purlin receiving fitting and the purlin receiving connecting part with a fastener, fixing the purlin receiving connecting part to the purlin receiving fitting, fastening the purlin connecting part and the end of the new purlin. A method of extending a purlin, wherein the new purlin is installed on an extension of the existing purlin by fastening with a fastener.