【０００１】
【発明の属する技術分野】
本発明は、住宅等の建築物の気密構造に関し、特に、外周柱と床下地との取り合い部における気密構造に関するものである。
【０００２】
【従来の技術】
近年、住宅には、計画的な換気による住宅の快適性の向上や、断熱性の向上による省エネルギー化を図るために、住宅の気密性が求められるようになってきている。一般に気密住宅とは、気密性能を表す相当隙間面積が床面積１平方メートル当たり５平方センチメートル以下のものをいい、これを達成するために、住宅の内部空間全体を気密面で囲うように気密工法が施工される。
【０００３】
住宅の気密を確保するために気密工事を施す箇所の１つとして、床下地と柱との取り合い部がある。該取り合い部においては、床下地と柱とが干渉するため、床下地を切り欠いて柱を納めることが多く、このような床下地と柱との間の隙間を密封することにより気密を確保する。図１１は、床下地と柱との取り合い部における従来の気密構造の一例を示す概略斜視図であり、本気密構造７０は、図に示すように、床下地７１上に互いに直交する方向に立設された断熱内壁枠７２と、添柱７３とにより形成される入隅部に、気密シートコーナー７４と帯状の気密テープ７５とを配設したものである。（特許文献１参照）
【０００４】
図１２は、前記気密シートコーナー７４の構成を示す平面図であり、気密シートコーナー７４は、床下地７１と密着する正方形の底部７６の一角を添柱７３の形状に沿って切り欠き、該切欠き７７の周縁に添柱７３と密着する立上がり部７８が設けられた形状となっている。また、気密シートコーナー７４の底部７６の裏側面、及び立上がり部７８における切欠き７７側面には、図示しない両面テープが貼り付けられている。
【０００５】
本気密構造７０では、まず、気密シートコーナー７４の底部７６を床下地７１に、また、立上がり部７８を添柱７３にそれぞれ密着させ、前記両面テープを用いて、気密シートコーナー７４を床下地７１と添柱７３の接続部に貼り付ける。次に、床下地７１と断熱内壁枠７２の接続部に沿って、前記気密テープ７５をＬ型に折り曲げて貼り付ける。この時、気密テープ７５の端部を気密シートコーナー７４に重ね合わせる。これにより、入隅部において、床下地７１と添柱７３との接続部に生じる隙間を密封し、気密を確保することが可能となっている。
【０００６】
ところで、住宅等の木造建築物の建設においては、地震等で水平方向への力が加わることによって建築物が変形することを防止するために、床組における胴差や床梁が交差する隅角部に、斜め方向に火打梁が設けられるのが一般的である。しかし、近年、現場作業の合理化・省力化を図るべく、床下地として十分な強度を有する構造用合板等を用い、該構造用合板等を床組に打ち付けることによって水平方向への強度を確保して、火打梁を省略する工法が多く用いられている。
【０００７】
この場合、床下地を床組に打ち付けるために、床下地を、胴差または床梁の上部まで張り延ばす必要がある。図１３は、床梁７９または胴差８０の上部まで張り延ばされた床下地７１を示す図であり、図に示すように、床下地７１と建物の外周柱８１との取り合い部Ａ，Ｂ，Ｃにおいて、床下地７１が外周柱８１に干渉することを回避するために、床下地７１には外周柱８１の形状に合わせた切欠部８２が設けられている。
【０００８】
前記取り合い部Ａ，Ｂ，Ｃにおいては、床下地７１の切欠部８２と外周柱８１との間の隙間を密封して気密を確保する必要がある。図１４は、取り合い部Ａへの前記気密構造７０の適用を示す概略斜視図である。この場合、まず、床下地７１に密着する底面８３と、外周柱８１に密着する立上がり面８４とを有する気密シートコーナー８５を、床下地７１と外周柱８１の接続部を密封して張り付ける。次に、前記気密テープ７５を、床下地７１と外周柱８１の接続部、及び外周柱８１と胴差８０の接続部に沿って張り付け、気密テープ７５の端部を気密シートコーナー８５に重ね合わせる。この時、床下地７１が胴差８０の上部まで張り延ばされたことにより、床下地７１の上面と胴差８０の上面との間には、図に示すように、床下地７１の厚み分だけ段差８６が生じているために、この段差８６に沿って気密テープ７５を貼り付ける必要がある。従って、段差８６の形状に合わせて気密テープ７５を複雑に折り曲げたり、切り込みを入れる等して気密テープ７５を貼り付けている。
【０００９】
【特許文献１】
特開２００１−２０７５５９号公報
【００１０】
【発明が解決しようとする課題】
しかし、床下地７１と外周柱８１との取り合い部Ａ，Ｂ，Ｃにおいて前記気密構造７０を適用した場合、前記段差８６に沿って気密テープ７５を貼り付ける必要があるために、気密テープ７５を複雑に折り曲げたり、切り込みを入れる等して貼り付けても、ピンホールが生じやすく、前記取り合い部Ａ，Ｂ，Ｃにおける気密を完全には確保できないという問題がある。また、作業現場において、各取り合い部Ａ，Ｂ，Ｃの形状等に合わせて気密テープ７５を複雑に加工することは、手間と時間を要するという問題もある。
【００１１】
本発明は、このような問題に鑑みてなされたものであり、住宅等の建設に際し、床下地を、床梁または胴差の上部まで張り延ばした場合において、床下地と外周柱との取り合い部の気密を、完全かつ容易に確保することができる手段を提供することを目的とする。
【００１２】
【課題を解決するための手段】
本発明は、床梁又は胴差に外周柱が立設され、床下地が、その端縁に形成された切欠部に前記外周柱を納めるようにして、前記床梁又は胴差の上部にまで張り延ばされてなる床下地と外周柱との取り合い部における気密構造であって、前記外周柱の屋内側と嵌合する切欠部が形成された底部と、該底部の切欠部周縁から起立した起立部とを備えてなる第１気密部材が、前記底部が前記床下地の切欠部周縁の上面に密着し、且つ前記起立部が前記外周柱の側面に密着するように配置され、各々の一端が同一平面となるように前記床下地の厚み方向に２段に設けられた上段部及び下段部と、該上段部及び下段部を連接する段差部と、該上段部及び下段部の一端から起立した起立部とを備えてなる第２気密部材が、前記上段部が前記床下地の切欠部周縁の上面に密着し、前記下段部が前記床梁又は胴差の上面に密着し、前記段差部が前記床下地の側面に密着し、且つ、前記起立部が前記外周柱の側面に密着するようにして、前記第１気密部材の両端部分と重ね合わさるように１対配置されてなるものである。
【００１３】
これにより、床下地と外周柱との間の隙間を第１気密部材により、床下地の上面及び側面と外周柱との間の隙間を第２気密部材により密封して前記床下地と外周柱との取り合い部における気密を確保することができる。
【００１４】
【発明の実施の形態】
以下、本発明の第１の実施形態に係る床下地と外周柱との取り合い部における気密構造１００について図面に基づいて説明する。本実施形態に係る気密構造１００は、図１３における床下地７１と外周柱８１との取り合い部Ａにおいて施工されるものであり、図１及び図２は、本気密構造１００の構成を示す図であり、図１は概略平面図、図２は屋外側から見た概略斜視図である。なお、図において、従来例に係る気密構造７０と同一の構成については同一の符号を付し、ここでは説明を省略する。図１に示すように、本気密構造１００は、第１気密部材１０１と、左右一対の第２気密部材１０２とが、床下地７１の切欠部８２と外周柱８１との間の隙間Ｄを密封するようにそれぞれ配設され、各第２気密部材１０２が第１気密部材１０１の両端部分にそれぞれ重ね合わされたものである。以下、各構成についてさらに詳細に説明する。
【００１５】
前記第１気密部材１０１は、ポリエチレン等の樹脂からなるシート状の部材を立体成形したものであり、図３及び図４は、前記第１気密部材１０１の構成を示す図であり、図３は斜視図、図４は平面図である。図３及び図４に示すように、前記第１気密部材１０１は、外周柱８１の屋内側と嵌合する切欠部１０３が形成された底部１０４と、該底部１０４の切欠部１０３周縁から立ち上がる起立部１０５とを有してなるものである。また、底部１０４の裏側面、及び起立部１０５の切欠部１０３側面は粘着シールとなっており、粘着面が露出して粘度が低下することを防止するため、図３に示すように、その表面は剥離紙Ｐで覆われている。該第１気密部材１０１が、底部１０４が床下地７１の切欠部８２周縁の上面に、また、起立部１０５が外周柱８１の側面に密着するように配設されることにより、床下地７１と外周柱８１との間の隙間Ｄが上方から密封される。
【００１６】
前記底部１０４は、図４に示すように、矩形の樹脂シートの一部に矩形の切欠部１０３が形成された、平面視が略コの字型の形状のものである。該切欠部１０３の形状は、本気密構造１００により気密を確保すべき取り合い部Ａに配設された外周柱８１の形状に合わせたものであり、外周柱８１の屋内側の形状に応じて適宜変更することができる。一方、底部１０４の切欠部１０３を除いた部分の形状は特に限定されるものではなく、施工の便宜等を考慮した任意の形状とすることができる。また、前記起立部１０５の形状についても、本実施形態の形状に限られず、任意に設計変更が可能である。また、起立部１０５は底部１０４から直立したものとなっており、前記取り合い部Ａにおいて、底部１０４が床下地７１と、起立部１０５が外周柱８１とそれぞれ密着することが可能となっている。なお、底部１０４と起立部１０５とがなす角度は、床下地７１と外周柱８１とがなす角度に応じて適宜変更が可能であることはもちろんである。さらに、第１気密部材１０１の材質は、空気を通過させないものであれば、ポリエチレン以外の樹脂、金属、ステンレス等であってもよい。
【００１７】
前記第２気密部材１０２は、ポリエチレン等の樹脂からなるシート状の部材を立体成形したものであり、図５及び図６は、前記第２気密部材１０２の構成を示す図であり、図５は斜視図、図６は図５においてＸ方向から見た側面図である。図５及び図６に示すように、第２気密部材１０２は、各々の一端が同一平面となるように床下地７１の厚み方向に２段に設けられた上段部１０７及び下段部１０８と、上段部１０７及び下段部１０８の一端から起立した起立部１０９とを備えてなるものである。また、図５に示すように、段差部１０６、上段部１０７、下段部１０８、及び起立部１０９は、床下地７１、床梁７９、胴差８０、または外周柱８１に密着する側の面が粘着シールとなっており、粘着面が露出して粘度が低下することを防止するため、その表面は剥離紙Ｐで覆われている。該第２気密部材１０２が、上段部１０７を床下地７１の切欠部８２周縁の上面に、段差部１０６を床下地７１の側面に、下段部１０８を床梁７９または胴差８０の上面に、起立部１０９を外周柱８１の側面に密着して配設されることにより、床下地７１と外周柱８１との間の隙間Ｄが、上側及び段差側から密封される。なお、第２気密部材１０２の材質は、空気を通過させないものであれば、ポリエチレン以外の樹脂、金属、ステンレス等であってもよい。
【００１８】
前記段差部１０６の高さ寸法は、床下地７１の厚みと略等しくなっており、且つ、段差部１０６と上段部１０７のなす角度、及び段差部１０６と下段部１０８のなす角度はそれぞれ９０°となっている。これにより、上段部１０７と段差部１０６と下段部１０８とが一体となって、床下地７１の上面と、床下地７１の側面と、床梁７９または胴差８０の上面とによって形成される段差Ｇに略合致する形状となっており、第２気密部材１０２を段差Ｇに密着させて配設することが可能となっている。段差部１０６と上段部１０７のなす角度、及び段差部１０６と下段部１０８のなす角度は９０°に限られず、床下地７１の上面と側面とがなす角度、及び、床梁７９または胴差８０と床下地７１の側面とがなす角度に応じて適宜変更が可能である。また、段差部１０６、上段部１０７、及び下段部１０８の形状は、本実施形態では矩形としているが、施工の便宜等を考慮した任意の形状とすることができる。
【００１９】
前記起立部１０９は、図６に示すように、矩形の樹脂シートの隅角部に、前記段差Ｇの形状に合わせて切欠部１１０が形成されたものである。該切欠部１１０の形状は、前記段差Ｇの形状に合わせたものであり、段差Ｇの形状に応じて適宜変更することができる。一方、起立部１０９の切欠部１１０を除いた部分の形状は特に限定されるものではなく、施工の便宜等を考慮した任意の形状とすることができる。また、起立部１０９は、上段部１０７及び下段部１０８から直立したものとなっており、前記取り合い部Ａにおいて、上段部１０７が床下地７１の上面と、下段部１０８が床梁７９または胴差８０の上面と、起立部１０９が外周柱８１の側面とそれぞれ密着することが可能となっている。なお、起立部１０９と上段部１０７及び下段部１０８とがなす角度は、外周柱８１が床下地７１、床梁７９、胴差８０のそれぞれとなす角度に応じて適宜変更が可能であることはもちろんである。
【００２０】
第１気密部材１０１、及び第２気密部材１０２の配設に際しては、まず、第１気密部材１０１の前記剥離紙Ｐを剥がして粘着面を露出させ、第１気密部材１０１の底部１０４が床下地７１の上面に、起立部１０５が外周柱８１に密着するように配置した上で、前記粘着シールにより固定する。次に、第２気密部材１０２の前記剥離紙Ｐを剥がして粘着面を露出させ、第２気密部材１０２の上段部１０７が床下地７１の切欠部８２周縁の上面に、段差部１０６が床下地７１の側面に、下段部１０８が床梁７９または胴差８０の上面に、起立部１０９が外周柱８１の側面に密着するように配置した上で、前記粘着シールを用いて固定する。この時、第１気密部材１０１と第２気密部材１０２とが離間して、前記隙間Ｄが露呈しないように、各第２気密部材１０２を第１気密部材１０１の両端部分にそれぞれ重ね合わせる。これにより、前記隙間Ｄを、第１気密部材１０１によって上側から、また、第２気密部材１０２によって上側及び段差側から密封し、取り合い部Ａの気密を確保することが可能となっている。また、第１気密部材１０１及び第２気密部材１０２を配設する順序は、本実施形態とは逆に、先に第２気密部材１０２、その後に第１気密部材１０１の順に配設することもできる。この場合、第１気密部材１０１の両端部分を各第２気密部材１０２に重ね合わせればよい。
【００２１】
次に、本発明の第２の実施形態に係る床下地７１と外周柱８１との取り合い部における気密構造２００について図面に基づいて説明する。本実施形態に係る気密構造２００は、図１３における床下地７１と外周柱８１との取り合い部Ｂにおいて施工されるものであり、図７は、本気密構造２００を屋内側から見た概略斜視図である。なお、図において、従来例に係る気密構造７０と同一の構成については同一の符号を付し、ここでは説明を省略する。図に示すように、本気密構造２００は、住宅の出隅部において、第１気密部材２０１と、左右一対の第２気密部材２０２とが、床下地７１と外周柱８１との間の隙間Ｄを密封するようにそれぞれ配設され、各第２気密部材２０２が第１気密部材２０１の両端部分にそれぞれ重ね合わされたものである。
【００２２】
図８は、本実施形態に係る第１気密部材２０１の構成を示す斜視図である。図に示すように、第１気密部材２０１は、第１の実施形態に係る第１気密部材１０１を半分にカットして、前記取り合い部Ｂにおいて外周柱８１の屋内側の隅部と嵌合する形状としたものであり、底部２０３と、該底部２０３と略９０°の角度をなして立上がる起立部２０４とを有してなるものである。それ以外の点については、第１の実施形態に係る第１気密部材１０１と同様であり、ここでは説明を省略する。該第１気密部材２０１が、底部２０３を床下地７１の切欠部８２周縁の上面に、また、起立部２０４を外周柱８１の側面に密着して配設されることにより、住宅の出隅部において、床下地７１と外周柱８１との間の隙間Ｄを上側から密封して気密を確保するものである。また、本実施形態に係る前記第２気密部材２０２は、第１の実施形態に係る第２気密部材１０２と同じ材質、形状、構成等を有するものであり、図７においては、第２気密部材１０２と同一の構成に付いては同一の符号を付し、ここでは説明を省略する。
【００２３】
第１気密部材２０１、及び第２気密部材２０２の配設に際しては、第１気密部２０１を、底部２０３が床下地７１の切欠部８２周縁の上面に、また、起立部２０４が外周柱８１の側面に密着するように配設する。それ以外の点については、第１の実施形態と同様である。
【００２４】
次に、本発明の第３の実施形態に係る床下地７１と外周柱８１との取り合い部における気密構造３００について図面に基づいて説明する。本実施形態に係る気密構造３００は、図１３における床下地７１と外周柱８１との取り合い部Ｃにおいて施工されるものであり、図９及び図１０は、本気密構造３００の構成を示す図であり、図９は屋内側から見た概略斜視図、図１０は屋外側から見た概略斜視図である。なお、図において、従来例に係る気密構造７０と同一の構成については同一の符号を付し、ここでは説明を省略する。図に示すように、本気密構造３００は、住宅の入隅部において、第１気密部材３０１ａ，３０１ｂと、左右一対の第２気密部材３０２と、帯状の気密テープ３０３とが、床下地７１と外周柱８１との間の隙間Ｄを密封するようにそれぞれ配設され、各第２気密部材３０２が、第１気密部材３０１ａ，３０１ｂの一端部分にそれぞれ重ね合わされたものである。
【００２５】
前記第１気密部材３０１ａは第１の実施の形態に係る第１気密部材１０１と、前記第１気密部材３０１ｂは第２の実施形態に係る第１気密部材２０１と、また、前記第２気密部材３０２は第１の実施形態に係る第２気密部材１０２と同じ材質、形状、構成等を有するものであり、図９及び図１０において、同一の構成については同一の符号を付し、ここでは説明を省略する。また、前記気密テープ３０３は、例えば、ブチルテープ等の空気を通過させない材質からなるものであって、第１気密部材３０１ａと第１気密部材３０１ｂとの間の隙間Ｄを密封するものである。より詳細に説明するに、前記入隅部において、第１気密部材３０１ａと第１気密部材３０１ｂとをそれぞれ配設した場合、図９に示すように、第１気密部材３０１ａと第１気密部材３０１ｂとが重なりあわず、両者の間に離間部Ｒが生じる場合には、床下地７１と外周柱８１の間の隙間Ｄが露呈された状態となるために、該隙間Ｄを気密テープ３０３によって密封して気密を確保する。離間部Ｒにおける前記隙間Ｄを密封するための手段としては、気密テープ３０３を用いる代わりに、ポリウレタン等のシーリング材を前記隙間Ｄに充填して隙間を塞ぐことも可能である。また、第１気密部材１０１をカットして第１気密部材３０１ｂを作製する際に、第１気密部材１０１の半分より大きめにカットして、第１気密部材３０１ａと第１気密部材３０１ｂとを重ね合わせることにより、離間部Ｒを生じないようにしてもよい。また、第１気密部材３０１ａ、第１気密部材３０１ｂを予め一体のものとして立体成形してもよい。
【００２６】
第１気密部材３０１ａ，３０１ｂ、第２気密部材３０２、及び気密テープ３０３の配設に際しては、まず、第１気密部材３０１ａを、底部１０４が床下地７１の切欠部８２周縁の上面に、起立部１０５が外周柱８１の側面に密着するように配置して、図示しない前記粘着シールにより固定する。同様に、第１気密部材３０２ｂを、底部２０３が床下地７１の切欠部８２周縁に、起立部２０４が外周柱８１の側面に密着するように配置して、図示しない前記粘着シールにより固定する。次に、左右一対の第２気密部材３０２を、第１の実施形態と同様にして配設する。このとき、一方の第２気密部材３０２を第１気密部材３０１ａの一端部分に重ね合わせ、他方の第２気密部材３０２を第１気密部材３０１ｂの一端部分に重ね合わせる。最後に、気密テープ３０３をＬ型に折り曲げて、前記離間部Ｒにおける前記隙間Ｄを密封して貼り付ける。この時、気密テープ３０３と、第１気密部材３０１ａ，３０１ｂとが離間して隙間Ｄが露呈しないように、気密テープ３０３の一方の端部を第１気密部材３０１ａに重ね合わせ、他方の端部を第１気密部材３０１ｂに重ね合わせる。また、各部材を配設する順序は本実施形態の順序に限られず、例えば、先に気密テープ３０３を配設して、その後に第１気密部材３０１ａ，３０１ｂを配設することもできる。この場合、第１気密部材３０１ａ，３０１ｂを気密テープ３０３の端部にそれぞれ重ね合わせればよい。
【００２７】
【発明の効果】
以上説明したように、本発明に係る床下地と外周柱との取り合い部における気密構造によれば、床梁又は胴差に外周柱が立設され、床下地が、その端縁に形成された切欠部に前記外周柱を納めるようにして、前記床梁又は胴差の上部にまで張り延ばされてなる床下地と外周柱との取り合い部において、前記外周柱の屋内側と嵌合する切欠部が形成された底部と、該底部の切欠部周縁から起立した起立部とを備えてなる第１気密部材が、前記底部が前記床下地の切欠部周縁の上面に密着し、且つ前記起立部が前記外周柱の側面に密着するように配置され、各々の一端が同一平面となるように前記床下地の厚み方向に２段に設けられた上段部及び下段部と、該上段部及び下段部を連接する段差部と、該上段部及び下段部の一端から起立した起立部とを備えてなる第２気密部材が、前記上段部が前記床下地の切欠部周縁の上面に密着し、前記下段部が前記床梁又は胴差の上面に密着し、前記段差部が前記床下地の側面に密着し、且つ、前記起立部が前記外周柱の側面に密着するようにして、前記第１気密部材の両端部分と重ね合わさるように１対配置されることにより、床下地と外周柱との間の隙間を完全に密封することができ、相当隙間面積が床面積１平方メートル当たり２平方センチメートル以下の高気密住宅の建設が可能となる。
【００２８】
また、作業現場において、各取り合い部の形状等に合わせて気密テープを複雑に加工する作業が不要となり、気密部材を貼り付けるだけの容易な作業を行うだけで、床下地と外周柱との取り合い部における気密を確保することが可能となる。これにより、作業精度の向上、省力化、及び施工期間の短縮を図ることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態に係る気密構造１００を示す正面図である。
【図２】本発明の第１の実施形態に係る気密構造１００を屋外側から見た概略斜視図である。
【図３】本発明の第１の実施形態に係る第１気密部材１０１を示す斜視図である。
【図４】本発明の第１の実施形態に係る第１気密部材１０１を示す平面図である。
【図５】本発明の第１の実施形態に係る第２気密部材１０２を示す斜視図である。
【図６】本発明の第１の実施形態に係る第２気密部材１０２を示す側面図である。
【図７】本発明の第２の実施形態に係る気密構造２００を屋内側から見た概略斜視図である。
【図８】本発明の第２の実施形態に係る第１気密部材２０１を示す斜視図である。
【図９】本発明の第３の実施形態に係る気密構造３００を屋内側から見た概略斜視図である。
【図１０】本発明の第３の実施形態に係る気密構造３００を屋外側から見た概略斜視図である。
【図１１】床下地と柱との取り合い部における従来の気密構造７０を示す概略斜視図である。
【図１２】従来例に係る気密シートコーナー７４を示す平面図である。
【図１３】胴差８０または床梁７９の上部まで張り延ばされた床下地７１を示す図である。
【図１４】図１１における取り合い部Ａへの気密構造７０の適用を示す概略斜視図である。
【符号の説明】
７１ 床下地
７９ 床梁
８０ 胴差
８１ 外周柱
８２ 切欠部（床下地）
１００，２００，３００ 気密構造
１０１，２０１，３０１ａ，３０１ｂ 第１気密部材
１０３ 切欠部（第１気密部材）
１０４，２０３ 底部
１０５，２０４ 起立部（第１気密部材）
１０６ 段差部
１０７ 上段部
１０８ 下段部
１０９ 起立部（第２気密部材）
Ａ，Ｂ，Ｃ 取り合い部
Ｄ 隙間[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an airtight structure of a building such as a house, and more particularly, to an airtight structure of a joint between an outer peripheral column and a floor substrate.
[0002]
[Prior art]
2. Description of the Related Art In recent years, houses have been required to be airtight in order to improve the comfort of the houses by systematic ventilation and to save energy by improving the heat insulation. Generally, an airtight house is one with an equivalent gap area of 5 square centimeters or less per square meter of floor space, which indicates airtight performance. To achieve this, an airtight construction method is used to enclose the entire interior space of the house with an airtight surface. Is done.
[0003]
One of the places where airtight work is performed to secure the airtightness of a house is a joint between a floor base and a pillar. In the connecting portion, since the floor base and the pillar interfere with each other, the floor base is often cut out to accommodate the pillar, and airtightness is secured by sealing the gap between the floor base and the pillar. . FIG. 11 is a schematic perspective view showing an example of a conventional airtight structure in a joint portion between a floor substrate and a pillar. As shown in the figure, the airtight structure 70 stands on a floor substrate 71 in directions perpendicular to each other. An airtight sheet corner 74 and a band-shaped airtight tape 75 are disposed at the corner formed by the provided heat insulating inner wall frame 72 and the auxiliary pillar 73. (See Patent Document 1)
[0004]
FIG. 12 is a plan view showing the configuration of the hermetic sheet corner 74. The hermetic sheet corner 74 is formed by cutting out a corner of a square bottom 76 that is in close contact with the floor substrate 71 along the shape of the supporting column 73. It has a shape in which a rising portion 78 is provided on the periphery of the notch 77 so as to be in close contact with the auxiliary pillar 73. Further, a double-sided tape (not shown) is attached to the back side surface of the bottom portion 76 of the airtight sheet corner 74 and the side surface of the notch 77 in the rising portion 78.
[0005]
In the present airtight structure 70, first, the bottom 76 of the airtight sheet corner 74 is brought into close contact with the floor substrate 71, and the rising portion 78 is brought into close contact with the pillar 73, and the airtight sheet corner 74 is brought into contact with the floor substrate 71 using the double-sided tape. To the connecting portion of the supporting column 73. Next, the hermetic tape 75 is bent into an L-shape along the connecting portion between the floor base 71 and the heat-insulating inner wall frame 72 and attached. At this time, the end of the airtight tape 75 is overlapped with the airtight sheet corner 74. Thereby, in the corner, the gap generated at the connecting portion between the floor base 71 and the auxiliary pillar 73 is sealed, and it is possible to secure airtightness.
[0006]
By the way, in the construction of a wooden building such as a house, in order to prevent the building from being deformed due to a horizontal force applied by an earthquake or the like, a corner at which a body difference or a floor beam intersects in a floor set. It is common that the section is provided with a striking beam in an oblique direction. However, in recent years, in order to rationalize and save labor on-site work, using a structural plywood or the like having sufficient strength as a floor base, and securing the strength in the horizontal direction by striking the structural plywood or the like on a floor set. Therefore, a method of omitting the fire struts is often used.
[0007]
In this case, it is necessary to extend the floor base to the height difference or the upper part of the floor beam in order to strike the floor base against the floor set. FIG. 13 is a view showing the floor base 71 extended to the upper part of the floor beam 79 or the body gap 80. As shown in the figure, the connecting portions A and B between the floor base 71 and the outer peripheral columns 81 of the building are shown. , C, the floor substrate 71 is provided with a cutout 82 adapted to the shape of the peripheral column 81 in order to prevent the floor substrate 71 from interfering with the outer peripheral column 81.
[0008]
In the joints A, B, and C, it is necessary to seal the gap between the notch 82 of the floor substrate 71 and the outer peripheral column 81 to ensure airtightness. FIG. 14 is a schematic perspective view showing the application of the hermetic structure 70 to the joint A. In this case, first, an airtight sheet corner 85 having a bottom surface 83 that is in close contact with the floor base 71 and a rising surface 84 that is in close contact with the outer peripheral column 81 is attached while sealing the connection between the floor substrate 71 and the outer peripheral column 81. Next, the hermetic tape 75 is attached along the connecting portion between the floor base 71 and the outer peripheral column 81 and along the connecting portion between the outer peripheral column 81 and the body difference 80, and the end of the hermetic tape 75 is overlapped on the hermetic sheet corner 85. . At this time, since the floor base 71 has been extended to the upper part of the body gap 80, as shown in FIG. Since only the step 86 is formed, it is necessary to attach the airtight tape 75 along the step 86. Therefore, the airtight tape 75 is attached by bending the airtight tape 75 in a complicated manner or making a cut in accordance with the shape of the step 86.
[0009]
[Patent Document 1]
JP 2001-207559 A
[Problems to be solved by the invention]
However, when the hermetic structure 70 is applied to the joints A, B, and C between the floor substrate 71 and the outer peripheral columns 81, the hermetic tape 75 needs to be adhered along the step 86, so that the hermetic tape 75 is used. Pinholes are liable to be generated even when they are bent and cut in a complicated manner, and there is a problem that airtightness in the joints A, B and C cannot be completely secured. Further, at the work site, complicated processing of the airtight tape 75 in accordance with the shape of each of the joints A, B, and C has a problem that it takes time and effort.
[0011]
The present invention has been made in view of such a problem, and in the case of constructing a house or the like, when the floor foundation is extended to the upper part of the floor beam or the body difference, the joint part between the floor foundation and the outer peripheral column is provided. It is an object of the present invention to provide means capable of completely and easily ensuring the airtightness of a vehicle.
[0012]
[Means for Solving the Problems]
According to the present invention, an outer peripheral column is erected on a floor beam or a trunk, and the floor foundation is arranged so that the outer peripheral column is accommodated in a cutout formed at an edge of the floor pillar or the upper part of the floor beam or the trunk. An airtight structure in a joint portion between the floor base and the outer peripheral pillar that is stretched, and a bottom formed with a cutout portion that fits with the indoor side of the outer peripheral column, and an erect structure that stands from the cutout peripheral edge of the bottom portion. A first hermetic member having an upright portion, the bottom portion being disposed in close contact with the upper surface of the cutout peripheral edge of the floor substrate, and the upright portion being disposed in close contact with the side surface of the outer peripheral column; Are provided in two steps in the thickness direction of the floor base so as to be flush with each other, a step connecting the upper and lower steps, and rising from one end of the upper and lower steps. A second airtight member having a raised portion, wherein the upper portion is a cutout portion of the floor substrate. The lower portion is in close contact with the upper surface of the edge, the lower portion is in close contact with the upper surface of the floor beam or the trunk, the step is in close contact with the side surface of the floor base, and the upright portion is in close contact with the side surface of the outer peripheral column. In this way, a pair is arranged so as to overlap with both end portions of the first airtight member.
[0013]
Thereby, the gap between the floor base and the outer peripheral pillar is sealed by the first airtight member, and the gap between the upper surface and the side surface of the floor base and the outer peripheral pillar is sealed by the second airtight member. The airtightness in the connection part can be secured.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an airtight structure 100 in a joint portion between a floor substrate and an outer peripheral column according to a first embodiment of the present invention will be described with reference to the drawings. The hermetic structure 100 according to the present embodiment is constructed at the joint A between the floor substrate 71 and the outer peripheral column 81 in FIG. 13. FIGS. 1 and 2 are diagrams showing the configuration of the hermetic structure 100. FIG. 1 is a schematic plan view, and FIG. 2 is a schematic perspective view seen from the outdoor side. In the drawings, the same components as those of the hermetic structure 70 according to the conventional example are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 1, in the present airtight structure 100, a first airtight member 101 and a pair of left and right second airtight members 102 seal a gap D between a cutout portion 82 of a floor base 71 and an outer peripheral column 81. The second airtight members 102 are respectively superposed on both end portions of the first airtight member 101. Hereinafter, each configuration will be described in more detail.
[0015]
The first hermetic member 101 is formed by three-dimensionally forming a sheet-like member made of a resin such as polyethylene, and FIGS. 3 and 4 are views showing the configuration of the first hermetic member 101. FIG. FIG. 4 is a perspective view, and FIG. 4 is a plan view. As shown in FIGS. 3 and 4, the first hermetic member 101 has a bottom portion 104 having a cutout portion 103 fitted to the indoor side of the outer peripheral column 81, and an upright standing up from a peripheral edge of the cutout portion 103 of the bottom portion 104. And a unit 105. In addition, the back side surface of the bottom portion 104 and the side surface of the cutout portion 103 of the upright portion 105 are formed with an adhesive seal, and to prevent the adhesive surface from being exposed and reducing the viscosity, as shown in FIG. Are covered with a release paper P. The first airtight member 101 is disposed such that the bottom 104 is in close contact with the upper surface of the notch 82 of the floor substrate 71 and the upright portion 105 is in close contact with the side surface of the outer peripheral column 81, so that the first airtight member 101 is in contact with the floor substrate 71. A gap D between the outer peripheral column 81 is sealed from above.
[0016]
As shown in FIG. 4, the bottom portion 104 has a substantially U-shape in plan view in which a rectangular notch 103 is formed in a part of a rectangular resin sheet. The shape of the notch 103 is adapted to the shape of the outer peripheral column 81 provided in the joint A where airtightness is to be ensured by the present airtight structure 100, and is appropriately determined according to the indoor shape of the outer peripheral column 81. Can be changed. On the other hand, the shape of the bottom portion 104 except for the cutout portion 103 is not particularly limited, and may be an arbitrary shape in consideration of the convenience of construction and the like. Also, the shape of the upright portion 105 is not limited to the shape of the present embodiment, and the design can be arbitrarily changed. Further, the upright portion 105 is upright from the bottom portion 104, so that the bottom portion 104 can be in close contact with the floor base 71 and the upright portion 105 can be in close contact with the outer peripheral column 81 in the connecting portion A. It is needless to say that the angle between the bottom portion 104 and the upright portion 105 can be appropriately changed according to the angle between the floor base 71 and the outer peripheral column 81. Further, the material of the first airtight member 101 may be a resin other than polyethylene, metal, stainless steel, or the like as long as it does not allow air to pass through.
[0017]
The second hermetic member 102 is formed by three-dimensionally molding a sheet-like member made of a resin such as polyethylene, and FIGS. 5 and 6 are diagrams showing a configuration of the second hermetic member 102. FIG. FIG. 6 is a perspective view, and FIG. 6 is a side view seen from the X direction in FIG. As shown in FIGS. 5 and 6, the second hermetic member 102 includes an upper portion 107 and a lower portion 108 provided in two steps in the thickness direction of the floor substrate 71 such that one end of each member is on the same plane. And an upright portion 109 rising from one end of the lower portion 108. Further, as shown in FIG. 5, the step portion 106, the upper portion 107, the lower portion 108, and the upright portion 109 are formed such that the surface on the side in close contact with the floor base 71, the floor beam 79, the body difference 80, or the outer peripheral column 81 is formed. The surface is covered with a release paper P to prevent the adhesive surface from being exposed and the viscosity from being reduced. The second hermetic member 102 includes an upper portion 107 on the upper surface of the periphery of the notch 82 of the floor substrate 71, a step portion 106 on the side surface of the floor substrate 71, and a lower portion 108 on the upper surface of the floor beam 79 or the body difference 80, By arranging the upright portion 109 in close contact with the side surface of the outer peripheral column 81, the gap D between the floor base 71 and the outer peripheral column 81 is sealed from the upper side and the step side. The material of the second airtight member 102 may be a resin other than polyethylene, metal, stainless steel, or the like as long as it does not allow air to pass through.
[0018]
The height of the stepped portion 106 is substantially equal to the thickness of the floor base 71, and the angle formed by the stepped portion 106 and the upper portion 107 and the angle formed by the stepped portion 106 and the lower portion 108 are each 90 °. It has become. As a result, the upper portion 107, the step portion 106, and the lower portion 108 are integrated, and the step formed by the upper surface of the floor substrate 71, the side surface of the floor substrate 71, and the floor beam 79 or the upper surface of the body difference 80. The second airtight member 102 has a shape substantially matching G, and can be disposed in close contact with the step G. The angle formed by the stepped portion 106 and the upper portion 107, and the angle formed by the stepped portion 106 and the lower portion 108 are not limited to 90 °, the angle formed by the upper surface and the side surface of the floor base 71, the floor beam 79 or the body difference 80. It can be changed appropriately according to the angle between the floor base 71 and the side surface. Further, the shape of the step portion 106, the upper portion 107, and the lower portion 108 is rectangular in the present embodiment, but may be any shape in consideration of the convenience of construction and the like.
[0019]
As shown in FIG. 6, the upright portion 109 is formed by forming a notch 110 at a corner of a rectangular resin sheet in accordance with the shape of the step G. The shape of the notch 110 is adapted to the shape of the step G, and can be appropriately changed according to the shape of the step G. On the other hand, the shape of the portion excluding the cutout portion 110 of the upright portion 109 is not particularly limited, and may be an arbitrary shape considering the convenience of construction and the like. Further, the upright portion 109 is upright from the upper portion 107 and the lower portion 108. In the connecting portion A, the upper portion 107 is the upper surface of the floor base 71, and the lower portion 108 is the floor beam 79 or the waist. The upper surface of 80 and the upright portion 109 can be in close contact with the side surfaces of the outer peripheral column 81, respectively. Note that the angle formed by the upright portion 109 and the upper portion 107 and the lower portion 108 can be appropriately changed according to the angle formed by the outer peripheral column 81 with the floor base 71, the floor beam 79, and the body difference 80. Of course.
[0020]
When disposing the first hermetic member 101 and the second hermetic member 102, first, the release paper P of the first hermetic member 101 is peeled off to expose the adhesive surface, and the bottom 104 of the first hermetic member 101 is The upright portion 105 is arranged on the upper surface of the base 71 so as to be in close contact with the outer peripheral column 81, and is fixed by the adhesive seal. Next, the release paper P of the second hermetic member 102 is peeled off to expose the adhesive surface. The upper portion 107 of the second hermetic member 102 is on the upper surface of the notch 82 of the floor substrate 71, and the step portion 106 is on the floor substrate. The lower portion 108 is disposed on the upper surface of the floor beam 79 or the body gap 80 on the side surface of the base 71, and the upright portion 109 is disposed so as to be in close contact with the side surface of the outer peripheral column 81, and then fixed using the adhesive seal. At this time, the first hermetic members 101 and the second hermetic members 102 are separated from each other, and the respective second hermetic members 102 are overlapped on both end portions of the first hermetic members 101 so that the gap D is not exposed. Thus, the gap D is sealed from the upper side by the first hermetic member 101, and is sealed from the upper side and the step side by the second hermetic member 102, so that the airtightness of the joint A can be ensured. In addition, the order in which the first hermetic member 101 and the second hermetic member 102 are arranged may be opposite to the present embodiment, in which the second hermetic member 102 is arranged first, and then the first hermetic member 101 is arranged in that order. it can. In this case, both end portions of the first hermetic member 101 may be overlapped with the respective second hermetic members 102.
[0021]
Next, an airtight structure 200 in a joint portion between a floor substrate 71 and an outer peripheral column 81 according to a second embodiment of the present invention will be described with reference to the drawings. The airtight structure 200 according to the present embodiment is constructed at the joint B between the floor substrate 71 and the outer peripheral column 81 in FIG. 13, and FIG. 7 is a schematic perspective view of the airtight structure 200 as viewed from the indoor side. It is. In the drawings, the same components as those of the hermetic structure 70 according to the conventional example are denoted by the same reference numerals, and description thereof will be omitted. As shown in the figure, in the airtight structure 200, a first airtight member 201 and a pair of left and right second airtight members 202 are provided at a protruding corner of a house by a gap D between a floor base 71 and an outer peripheral column 81. Are disposed so as to seal each other, and the second hermetic members 202 are superposed on both end portions of the first hermetic member 201, respectively.
[0022]
FIG. 8 is a perspective view illustrating the configuration of the first airtight member 201 according to the present embodiment. As shown in the figure, the first hermetic member 201 cuts the first hermetic member 101 according to the first embodiment in half, and fits into the indoor corner of the outer peripheral column 81 at the joint B. It has a bottom portion 203 and an upright portion 204 that rises at an angle of approximately 90 ° with the bottom portion 203. Other points are the same as those of the first hermetic member 101 according to the first embodiment, and the description thereof will not be repeated. The first airtight member 201 is disposed such that the bottom portion 203 is disposed on the upper surface of the periphery of the cutout portion 82 of the floor base 71 and the upright portion 204 is disposed on the side surface of the outer peripheral column 81 so as to be close to the corner of the house. In this case, the gap D between the floor substrate 71 and the outer peripheral column 81 is sealed from above to ensure airtightness. Further, the second hermetic member 202 according to the present embodiment has the same material, shape, configuration, and the like as the second hermetic member 102 according to the first embodiment, and in FIG. The same components as those of 102 are denoted by the same reference numerals, and description thereof is omitted here.
[0023]
When disposing the first hermetic member 201 and the second hermetic member 202, the first hermetic portion 201, the bottom portion 203 is provided on the upper surface of the periphery of the cutout portion 82 of the floor base 71, and the upright portion 204 is provided on the outer peripheral column 81. Arrange so as to be in close contact with the side. Other points are the same as those of the first embodiment.
[0024]
Next, an airtight structure 300 in a joint portion between a floor base 71 and an outer peripheral column 81 according to a third embodiment of the present invention will be described with reference to the drawings. The airtight structure 300 according to the present embodiment is constructed at the joint C between the floor substrate 71 and the outer peripheral column 81 in FIG. 13. FIGS. 9 and 10 are diagrams showing the configuration of the airtight structure 300. FIG. 9 is a schematic perspective view seen from the indoor side, and FIG. 10 is a schematic perspective view seen from the outdoor side. In the drawings, the same components as those of the hermetic structure 70 according to the conventional example are denoted by the same reference numerals, and description thereof will be omitted. As shown in the figure, the real airtight structure 300 includes a first airtight member 301a, 301b, a pair of left and right second airtight members 302, and a belt-shaped airtight tape 303 at the corner of the house, Each of the second airtight members 302 is disposed so as to seal the gap D between the outer peripheral column 81 and each of the second airtight members 302 and the first airtight members 301a and 301b.
[0025]
The first airtight member 301a is the first airtight member 101 according to the first embodiment, the first airtight member 301b is the first airtight member 201 according to the second embodiment, and the second airtight member. Reference numeral 302 denotes a member having the same material, shape, configuration, and the like as the second hermetic member 102 according to the first embodiment. In FIGS. 9 and 10, the same components are denoted by the same reference numerals, and will be described here. Is omitted. The airtight tape 303 is made of a material that does not allow air to pass, such as a butyl tape, and seals a gap D between the first airtight member 301a and the first airtight member 301b. More specifically, in the case where the first airtight member 301a and the first airtight member 301b are provided at the corners, respectively, as shown in FIG. 9, the first airtight member 301a and the first airtight member 301b are provided. Are not overlapped with each other, and a gap R is formed between them, the gap D between the floor base 71 and the outer peripheral column 81 is exposed, so that the gap D is sealed with the airtight tape 303. To ensure airtightness. As a means for sealing the gap D in the separation portion R, it is possible to fill the gap D with a sealing material such as polyurethane instead of using the airtight tape 303 to close the gap. Further, when the first hermetic member 101 is cut to produce the first hermetic member 301b, the first hermetic member 301a and the first hermetic member 301b are overlapped by being cut to be larger than half of the first hermetic member 101. By combining, the separated portion R may not be generated. Alternatively, the first hermetic member 301a and the first hermetic member 301b may be three-dimensionally formed as an integral unit in advance.
[0026]
When arranging the first hermetic members 301a, 301b, the second hermetic member 302, and the hermetic tape 303, first, the first hermetic member 301a is mounted on the upper surface of the cutout portion 82 of the floor base 71 by the upright portion. 105 is arranged so as to be in close contact with the side surface of the outer peripheral column 81 and fixed by the above-mentioned adhesive seal (not shown). Similarly, the first hermetic member 302b is arranged so that the bottom 203 is in close contact with the periphery of the notch 82 of the floor substrate 71 and the upright portion 204 is in close contact with the side surface of the outer peripheral column 81, and is fixed by the adhesive seal (not shown). Next, a pair of left and right second airtight members 302 is disposed in the same manner as in the first embodiment. At this time, one second hermetic member 302 is overlapped on one end of the first hermetic member 301a, and the other second hermetic member 302 is overlapped on one end of the first hermetic member 301b. Finally, the airtight tape 303 is bent into an L shape, and the gap D in the separation portion R is sealed and attached. At this time, one end of the airtight tape 303 is overlapped with the first airtight member 301a so that the gap D is not exposed because the airtight tape 303 is separated from the first airtight members 301a and 301b, and the other end is provided. Is superimposed on the first airtight member 301b. The order in which the members are arranged is not limited to the order of the present embodiment. For example, the airtight tape 303 may be arranged first, and then the first airtight members 301a and 301b may be arranged. In this case, the first airtight members 301a and 301b may be superimposed on the ends of the airtight tape 303, respectively.
[0027]
【The invention's effect】
As described above, according to the airtight structure in the joint portion between the floor base and the outer peripheral column according to the present invention, the outer peripheral column is erected on the floor beam or trunk difference, and the floor substrate is formed at the edge thereof. A notch that fits with the indoor side of the outer peripheral column at a joint between the floor pillar and the outer peripheral column, which is extended to the upper part of the floor beam or body gap, so as to accommodate the outer peripheral column in the notch portion. A first hermetic member including a bottom having a portion formed thereon and an upright portion rising from the periphery of the notch of the bottom, wherein the bottom is in close contact with an upper surface of the periphery of the notch of the floor substrate, and Are arranged so as to be in close contact with the side surfaces of the outer peripheral column, and upper and lower steps provided in two steps in the thickness direction of the floor base such that one end of each of the upper and lower steps is formed so as to be flush with each other; And a standing portion standing from one end of the upper portion and the lower portion. A second hermetic member comprising: an upper portion in close contact with an upper surface of a notch peripheral edge of the floor substrate; the lower portion in close contact with an upper surface of the floor beam or the body gap; and the step portion having the floor substrate. And the upright portion is in close contact with the side surface of the outer peripheral column, and is disposed in a pair so as to overlap with both end portions of the first hermetic member. Can be completely sealed, and a highly airtight house having an equivalent gap area of 2 square centimeters or less per square meter of floor area can be constructed.
[0028]
Also, at the work site, there is no need to perform complicated processing of the airtight tape according to the shape of each connecting part, etc. It is possible to ensure airtightness in the section. As a result, it is possible to improve work accuracy, save labor, and shorten the construction period.
[Brief description of the drawings]
FIG. 1 is a front view showing an airtight structure 100 according to a first embodiment of the present invention.
FIG. 2 is a schematic perspective view of the airtight structure 100 according to the first embodiment of the present invention as viewed from the outdoor side.
FIG. 3 is a perspective view showing a first airtight member 101 according to the first embodiment of the present invention.
FIG. 4 is a plan view showing a first hermetic member 101 according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing a second hermetic member 102 according to the first embodiment of the present invention.
FIG. 6 is a side view showing a second hermetic member 102 according to the first embodiment of the present invention.
FIG. 7 is a schematic perspective view of an airtight structure 200 according to a second embodiment of the present invention as viewed from the indoor side.
FIG. 8 is a perspective view showing a first airtight member 201 according to a second embodiment of the present invention.
FIG. 9 is a schematic perspective view of an airtight structure 300 according to a third embodiment of the present invention as viewed from the indoor side.
FIG. 10 is a schematic perspective view of an airtight structure 300 according to a third embodiment of the present invention as viewed from the outdoor side.
FIG. 11 is a schematic perspective view showing a conventional hermetic structure 70 at a joint between a floor substrate and a pillar.
FIG. 12 is a plan view showing a hermetic sheet corner 74 according to a conventional example.
FIG. 13 is a view showing a floor base 71 extended to an upper portion of a waist gap 80 or a floor beam 79.
14 is a schematic perspective view showing the application of the airtight structure 70 to the joint A in FIG.
[Explanation of symbols]
71 Floor floor 79 Floor beam 80 Body gap 81 Outer pillar 82 Notch (floor base)
100, 200, 300 Hermetic structure 101, 201, 301a, 301b First hermetic member 103 Notch (first hermetic member)
104, 203 Bottom part 105, 204 Upright part (first airtight member)
106 Step 107 Upper part 108 Lower part 109 Upright part (second airtight member)
A, B, C Joint D
