JP3636752B2

JP3636752B2 - Floor foundation structure

Info

Publication number: JP3636752B2
Application number: JP30666494A
Authority: JP
Inventors: 隆夫佐藤
Original assignee: 株式会社佐藤型鋼製作所
Priority date: 1994-08-12
Filing date: 1994-12-09
Publication date: 2005-04-06
Anticipated expiration: 2020-04-06
Also published as: JPH08105189A

Description

【０００２】
【産業上の利用分野】
【０００３】
本願発明は、建築物における床下地構造に関し、さらに詳しくは中高床タイプの床下地構造に関するものである。
【従来の技術】
【０００４】
例えば、金属製床下地材を用いた床下地構造としては、日本工業規格ＪＩＳＡ６５１９体育館用鋼製床下地材を用いたものが良く知られている。
【０００５】
また、コンピュータルーム等のＯＡフロア用として開発された特殊構造の床下地材も知られている。
【０００６】
さらに、一般住宅用の床下地構造として良く知られているものには、床下スラブ上に木製の大引を配置し、該大引上に交叉して木製の根太を配置し、その上に床材を張設するようにしたものがある。この場合、シロアリ対策を講じる必要があるが、該対策としては大引および根太にシロアリ駆除用の薬品を染み込ませる程度のことしかされていない。
【発明が解決しようとする課題】
【０００７】
ところが、上記した体育館用鋼製床下地材を用いた床下地構造の場合、体育館用に限定されているため、汎用性に欠けるとともに高コストであるため一般に普及しにくいという問題がある。
【０００８】
また、ＯＡフロア用のものは、床下スラブと床材との間に複雑な構造を有する多くの支持部材を介設することとされており、各支持部材と床材との結合部は、床材下面に特殊な加工を施して支持部材の上端を嵌め込む構造とされるところから、構造の複雑化を余儀なくされるとともに、部品点数および加工工数も多くなり、コストアップをまぬがれないという問題がある。また、各支持部材の高さ調整に多くの手間がかかるところから作業性も悪くなる。しかも、ＯＡフロア専用であるため汎用性に欠け、一般に普及しにくいという問題もある。
【０００９】
さらに、木製の大引と根太との組み合わせによる床下地構造を構成する場合、構成自体が複雑となり、組立作業も複雑とならざるを得ないという問題がある。しかも、使用木材に薬品を染み込ませるだけでは、シロアリ対策としては完全ではないという不具合も存する。
【００１０】
なお、一般住宅において、金属製の床下地材が使用されていなかった大きな理由の一つに、構造および施行方法等が複雑なため大工が使用を好まないことが挙げられる。
【００１１】
ところで、床下地の工事中には人の通行が困難になるところから、工事期間が長引くことは他の工事に支障を来す場合が多い。従って、床下地の工事期間は、短ければ短い程よいこととなる。ところが、上記した従来の床下地構造の場合、床下地を構成する各部材を現場で組み立てることしかできないものがほとんどであり、工事期間の短縮が難しいという不具合が存していた。特に、ＯＡフロア等は現場組立しかできなかった。
【００１２】
上記のような事情から、極めて軽量且つ構造が簡単で、特別な技術を要することなく低コストで且つ短い工期で工事できる金属製床下地材を用いた床下地構造への期待が高まっている。
【００１３】
本願発明は、上記の点に鑑みてなされたもので、極めて簡単な構造の床下地材を用いた床下地構造であって、特別な技術を有しない者にも容易に実施でき、しかもコストの大幅な引き下げおよび工期の大幅な短縮を図り得るようにすることを目的とするものである。
【課題を解決するための手段】
【００１４】
請求項１に係る発明の床下地構造は、床材１と床下スラブ２との間に、所定間隔をおいて横置き平行状態で配設された中空な金属製四角筒からなる複数の床下地材３，３・・と、該各床下地材３を前記床下スラブ２に対して支持する複数の支持具４，４・・とを介設した床下地構造において、前記各床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて長手方向に連続するコーナ型接続部５として成形するとともに、前記支持具４を、前記床下地材３の下面３ｂおよび両側面３ｃ，３ｄを抱持すべく断面上向きコ字状に構成され且つ底部中央にネジ穴１１を有する受金具１０と、該受金具１０と前記床下地材３との間に介設される緩衝材１２と、前記ネジ穴１１に螺合されるネジ杆１３と、該ネジ杆１３を回動自在に支持するとともに前記床下スラブ２に固定される金属製基台１４とによって構成し、前記ネジ杆１３の回動操作により前記床下地材３の高さ調整を行い得るようにし且つ前記ネジ杆１３の上下方向中間部に、補強用の金属製中空筒６２を固定したことを特徴としている。
【００１５】
請求項２に係る発明の床下地構造は、床材１と床下スラブ２との間に、所定間隔をおいて横置き平行状態で配設された中空な金属製四角筒からなる複数の床下地材３，３・・と、該各床下地材３を前記床下スラブ２に対して支持する複数の支持具４，４・・とを介設した床下地構造において、前記各床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて長手方向に連続するコーナ型接続部５として成形し、前記支持具４を、前記床下地材３の下面３ｂおよび両側面３ｃ，３ｄを抱持すべく断面上向きコ字状に構成され且つ底部中央にネジ穴１１を有する受金具１０と、該受金具１０と前記床下地材３との間に介設される緩衝材１２と、前記ネジ穴１１に螺合されるネジ杆１３と、該ネジ杆１３を回動自在に支持するとともに前記床下スラブ２に固定される金属製基台１４とによって構成し、前記ネジ杆１３の回動操作により前記床下地材３の高さ調整を行い得るようにするとともに、前記ネジ杆１３を、上部ネジ杆６６および下部ネジ杆６７に分割し且つ該上部ネジ杆６６の下端部と前記下部ネジ杆６７の上端部とを、両者のネジ部６６ａ，６７ａに対してそれぞれ螺合する内ネジ６８ａ，６８ａを上部および下部にそれぞれ有する補強用の金属製ネジ筒６８を介して共回り可能に連結したことを特徴としている。
【００１６】
請求項１および請求項２に係る発明の床下地構造においては、次のような好ましい実施の態様がある。
【００１７】
即ち、前記ネジ杆１３上端を前記床下地材３の下面３ｂを貫通して床下地材３内に臨ましめ且つその上端に回動操作部１７を設ける一方、前記床下地材３の上面３ａに、前記ネジ杆１３上端と対向する位置に作業用穴８を形成するのが床下地材３の高さ調整を容易ならしめる点で好ましく、しかも前記回動操作部１７をドライバーＤの先端を挿入し得る凹溝とするのがドライバー１本で床下地材３の高さ調整を行える点でさらに好ましい。
【００１８】
また、前記床下地材３，３・・相互を、該床下地材３，３・・と直交するフレ止め用のチャンネル３２により連結し、あるいは前記床材１と前記床下地材３，３・・との間に、該床下地材３，３・・と直交する中空な金属製四角筒からなる複数の根太２６，２６・・を介設するのが床下地構造の堅牢性を強化し得る点で好ましく、前記各根太２６の上面２６ａに、長手方向に延び且つ根太２６を固定するためのドライウォールスクリュー２９の頭部２９ａを収容し得る深さを有する収容溝３０を形成するのが根太２６の軽量化および強度増強を図り得るとともに根太２６を固定するためのドライウォールスクリュー２９の頭部２９ａを根太上面２６ａ上に露出させない点で好ましい。
【００１９】
また、前記根太２６を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて長手方向に連続するコーナ型接続部５として成形するのが軽量且つ堅牢で低コストな床下地構造が得られる点で好ましい。
【００２０】
また、前記各根太２６の両側面に、縦方向に延びる複数のビード６１，６１・・を長手方向に所定間隔で形成するのが根太２６の耐荷重性を向上させる点で好ましい。
【００２１】
また、前記各床下地材３の両側面３ｃ，３ｄに、縦方向に延びる複数のビード６０，６０・・を長手方向に所定間隔で形成するのが床下地材３の耐荷重性を向上させる点で好ましい。
【作用】
【００２２】
請求項１に係る発明の床下地構造では、上記手段によって次のような作用が得られる。
【００２３】
即ち、床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて水平方向に連続するコーナ型接続部５として成形するようにしているので、薄肉の金属板Ｐにより床下地材３が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られる。
【００２４】
また、床下スラブ２上に複数の支持具４，４・・により支持された床下地材３，３・・を横置き平行状態で配置し、ネジ杆１３を回動操作するだけで床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出しが容易に行えることとなり、極めて簡単な構成および作業により堅牢な床下地構造が容易に得られることとなる。また、前記ネジ杆１３の上下方向中間部に、補強用の金属製中空筒６２を固定したことにより、金属製中空筒６２によりネジ杆１３の剛性が強化されることとなり、床下地構造の堅牢性向上に寄与する。
【００２５】
請求項２に係る発明の床下地構造では、上記手段によって次のような作用が得られる。
【００２６】
即ち、床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて水平方向に連続するコーナ型接続部５として成形するようにしているので、薄肉の金属板Ｐにより床下地材３が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られる。
【００２７】
また、床下スラブ２上に複数の支持具４，４・・により支持された床下地材３，３・・を横置き平行状態で配置し、ネジ杆１３を回動操作するだけで床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出しが容易に行えることとなり、極めて簡単な構成および作業により堅牢な床下地構造が容易に得られることとなる。また、前記ネジ杆１３を、上部ネジ杆６６および下部ネジ杆６７に分割するとともに、該上部ネジ杆６６の下端部と前記下部ネジ杆６７の上端部とを、両者のネジ部６６ａ，６７ａに対してそれぞれ螺合する内ネジ６８ａ，６８ａを上部および下部にそれぞれ有する補強用の金属製ネジ筒６７を介して共回り可能に連結したことにより、金属製ネジ筒６７によりネジ杆１３の剛性が強化されるとともに金属製ネジ筒６７の長さを変えることにより床下高さを変化させることも可能となり、床下地構造の堅牢性向上と床下高さの異なるものへの対応性向上とに寄与する。
【００２８】
請求項１および請求項２に係る発明の好ましい実施の態様では、次のような作用が得られる。
【００２９】
即ち、前記ネジ杆１３上端を前記床下地材３の下面３ｂを貫通して床下地材３内に臨ましめ且つその上端に回動操作部１７を設ける一方、前記床下地材３の上面３ａに、前記ネジ杆１３上端と対向する位置に作業用穴８を形成すれば、作業用穴８からの回動操作部１７の操作により床下地材３の高さ調整が容易に行え、しかも前記回動操作部１７をドライバーＤの先端を挿入し得る凹溝とすれば、ドライバー１本で床下地材３の高さ調整を行える。
【００３０】
また、前記床下地材３，３・・相互を、該床下地材３と直交するフレ止め用のチャンネル３２により連結し、あるいは前記床材１と前記床下地材３との間に、該床下地材３と直交する中空な金属製四角筒からなる複数の根太２６，２６・・を介設した場合、床下地材３，３・・相互の連結性が強化されるところから、床下地構造の堅牢性が大幅に向上することとなり、この場合において、前記各根太２６の上面２６ａに、長手方向に延び且つ根太２６を固定するためのドライウォールスクリュー２９の頭部２９ａを収容し得る深さを有する収容溝３０を形成すると、根太２６を固定するためのドライウォールスクリュー２９の頭部２９ａが根太上面２６ａから露出しないこととなり、床材１の張設の支障にならない。
【００３１】
また、前記根太２６を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて水平方向に連続するコーナ型接続部５として成形した場合、薄肉の金属板Ｐにより根太２６が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られる。
【００３２】
また、前記各床下地材３の両側面３ｃ，３ｄに、縦方向に延びる複数のビード６０，６０・・を長手方向に所定間隔で形成した場合、床下地材３の耐荷重性が向上することとなり、同一荷重に耐えるものでは薄肉化が図れ、同一肉厚のものでは上下方向荷重に耐える力が増大するためコストの低減が図れる。
【００３３】
また、前記各根太２６の両側面に、縦方向に延びる複数のビード６１，６１・・を長手方向に所定間隔で形成した場合、根太２６の耐荷重性が大幅に向上することとなり、同一荷重に耐えるものでは薄肉化が図れ、同一肉厚のものでは上下方向荷重に耐える力が増大するためコストの低減につながる。
【発明の効果】
【００３４】
請求項１に係る発明の床下地構造によれば、床材１と床下スラブ２との間に、所定間隔をおいて横置き平行状態で配設された中空な金属製四角筒からなる複数の床下地材３，３・・と、該各床下地材３を前記床下スラブ２に対して支持する複数の支持具４，４・・とを介設した床下地構造において、前記床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて水平方向に連続するコーナ型接続部５として成形するようにしているので、薄肉の金属板Ｐにより床下地材３が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られるという効果がある。
【００３５】
また、前記支持具４を、前記床下地材３の下面３ｂおよび両側面３ｃ，３ｄを抱持すべく断面上向きコ字状に構成し且つ底部中央にネジ穴１１を有する受金具１０と、該受金具１０と前記床下地材３との間に介設される緩衝材１２と、前記ネジ穴１１に螺合されるネジ杆１３と、該ネジ杆１３を回動自在に支持するとともに前記床下スラブ２に固定される金属製基台１４とによって構成し、前記ネジ杆１３の回動操作により前記床下地材３の高さ調整を行い得るようにして、床下スラブ２上に複数の支持具４，４・・により支持された床下地材３，３・・を横置き平行状態で配置し、ネジ杆１３を回動操作するだけで床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出しが容易に行えるしているので、極めて簡単な構成および作業により堅牢な床下地構造が得られることとなり、特殊な技術を有しない作業者（例えば、大工）でも簡単且つ低コストで工事できるとともに、床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出し作業も極めて容易となるという効果がある。しかも、特殊な床構造ものだけでなく、一般住宅用等にも採用可能な汎用性を有しているという効果もある。また、前記ネジ杆１３の上下方向中間部に、補強用の金属製中空筒６２を固定したことにより、金属製中空筒６２によりネジ杆１３の剛性が強化されることとなり、床下地構造の堅牢性向上に寄与するという効果もある。
【００３６】
また、金属製の床下地材３を用いているので、シロアリ対策としても極めて有用である。
【００３７】
しかも、床下において床下地材３，３・・相互間に多くの空間が保持されることとなるため、付随工事（例えば、断熱材の敷設、水道工事の配管、電気工事の配線、床暖房の設置等）も極めて簡単に行えるという利点もある。
【００３８】
請求項２に係る発明の床下地構造によれば、床材１と床下スラブ２との間に、所定間隔をおいて横置き平行状態で配設された中空な金属製四角筒からなる複数の床下地材３，３・・と、該各床下地材３を前記床下スラブ２に対して支持する複数の支持具４，４・・とを介設した床下地構造において、前記床下地材３を、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成するとともに、前記金属板Ｐの一方の端部に、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６を設ける一方、前記金属板Ｐの他方の端部に、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７を設け、両者を連続して嵌合圧着せしめて水平方向に連続するコーナ型接続部５として成形するようにしているので、薄肉の金属板Ｐにより床下地材３が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られるという効果がある。
【００３９】
また、前記支持具４を、前記床下地材３の下面３ｂおよび両側面３ｃ，３ｄを抱持すべく断面上向きコ字状に構成し且つ底部中央にネジ穴１１を有する受金具１０と、該受金具１０と前記床下地材３との間に介設される緩衝材１２と、前記ネジ穴１１に螺合されるネジ杆１３と、該ネジ杆１３を回動自在に支持するとともに前記床下スラブ２に固定される金属製基台１４とによって構成し、前記ネジ杆１３の回動操作により前記床下地材３の高さ調整を行い得るようにして、床下スラブ２上に複数の支持具４，４・・により支持された床下地材３，３・・を横置き平行状態で配置し、ネジ杆１３を回動操作するだけで床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出しが容易に行えるしているので、極めて簡単な構成および作業により堅牢な床下地構造が得られることとなり、特殊な技術を有しない作業者（例えば、大工）でも簡単且つ低コストで工事できるとともに、床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出し作業も極めて容易となるという効果がある。しかも、特殊な床構造ものだけでなく、一般住宅用等にも採用可能な汎用性を有しているという効果もある。また、前記ネジ杆１３を、上部ネジ杆６６および下部ネジ杆６７に分割するとともに、該上部ネジ杆６６の下端部と前記下部ネジ杆６７の上端部とを、両者のネジ部６６ａ，６７ａに対してそれぞれ螺合する内ネジ６８ａ，６８ａを上部および下部にそれぞれ有する補強用の金属製ネジ筒６７を介して共回り可能に連結したことにより、金属製ネジ筒６７によりネジ杆１３の剛性が強化されるとともに金属製ネジ筒６７の長さを変えることにより床下高さを変化させることも可能となり、床下地構造の堅牢性向上と床下高さの異なるものへの対応性向上とに寄与するという効果もある。
【００４０】
また、金属製の床下地材３を用いているので、シロアリ対策としても極めて有用である。
【００４１】
しかも、床下において床下地材３，３・・相互間に多くの空間が保持されることとなるため、付随工事（例えば、断熱材の敷設、水道工事の配管、電気工事の配線、床暖房の設置等）も極めて簡単に行えるという利点もある。
【実施例】
【００４２】
以下、添付の図面を参照して、本願発明の幾つかの好適な実施例および参考例を説明する。
【００４３】
参考例１
図１ないし図６には、本願発明の参考例１にかかる床下地構造が示されている。
【００４４】
本参考例の床下地構造は、図１ないし図４に示すように、床材１と床下スラブ（本参考例の場合、コンクリートスラブ）２との間に、所定間隔をおいて横置き平行状態で配設された中空な金属製四角筒からなる複数の床下地材３と、該各床下地材３を前記床下スラブ２に対して支持する複数の支持具４，４・・とを介設することにより構成されている。なお、本参考例の場合、床材１と床下地材３との間には、該床下地材３と直交する根太２６が介設されている。
【００４５】
前記床下地材３は、所定幅に切断された金属板Ｐをその両端がコーナの一点において接するように四角筒状に折曲して構成されており、前記金属板Ｐの一方の端部には、内側に折曲され、さらにその先端部が外側に向かって折曲されてなる逆Ｊ字状折曲部６が設けられ、前記金属板Ｐの他方の端部には、内側に逆Ｕ字状に折曲されてなる逆Ｕ字状折曲部７が設けられ、両者を連続して嵌合圧着せしめて長手方向に連続するコーナ型接続部５として形成されている。そして、この床下地材３は、コーナ型接続部５が下に位置するように配置され、上面３ａが床材１の張設面とされることとなっている。このように構成すると、薄肉の金属板Ｐにより床下地材３が構成できるところから、軽量且つ堅牢で低コストな床下地構造が得られるとともに、床下地材３の上面３ａを有効に使用できるようになる。
【００４６】
前記床下地材３の上面３ａには、複数の作業用穴８，８・・が長手方向に所定間隔をおいて形成されている。該作業用穴８は、後述するネジ杆１３を回動操作するためのドライバーＤが挿入できる程度の開口面積があればよく、その形状は、図示の矩形状の他、適宜なものを選択できる。
【００４７】
また、前記床下地材３の下面３ｂには、後に詳述する支持具４における緩衝材１２の一部（即ち、円筒状凸部１５）を嵌挿するための円形の嵌挿穴９が前記作業用穴８，８・・に対応して形成されている。
【００４８】
前記支持具４は、前記床下地材３の下面３ｂおよび左右両側面３ｃ，３ｄを抱持すべく断面上向きコ字状に構成され且つ底部中央にネジ穴１１を有する受金具１０と、該受金具１０と前記床下地材３との間に介設される緩衝材１２と、前記ネジ穴１１に螺合されるネジ杆１３と、該ネジ杆１３を回動自在に支持するとともに前記床下スラブ２に固定される金属製基台１４とによって構成されている。
【００４９】
前記ネジ穴１１は、前記受金具１０の底部中央から下向きに突設された筒部１０ａの内周面に形成されている。
【００５０】
前記緩衝材１２は、硬質合成ゴム等により前記受金具１０と同形状に構成されており、その底部中央には、前記ネジ穴１１に対応しネジ穴１１より若干大径の貫通穴１６を有する円筒状凸部１５が一体に形成されている。この円筒状凸部１５は、緩衝材１２の取付時に前記床下地材３の下面３ｂに形成された嵌挿穴９に嵌挿され、緩衝材１２の移動を規制するとともに、ネジ杆１３と床下地材３（具体的には、ネジ杆貫通部）との摩擦を回避して床キシミを防止する。
【００５１】
前記ネジ杆１３は前記ネジ穴１１に螺合され、その上端は、前記緩衝材１２における円筒状凸部１５の貫通穴１６を介して（換言すれば、床下地材３の下面３ｂを貫通して）前記床下地材３内に臨ましめられている。そして、このネジ杆１３の上端面には凹溝１７が形成されている。該凹溝１７は、ドライバーＤの先端が挿入されるものであり、ネジ杆１３を回動させるための回動操作部として作用する。なお、回動操作部としては、本実施例の凹溝の他、回動工具の種類に対応して各種形状のもの（例えば、ネジ杆１３の上端に形成された多角形部等）が採用可能である。
【００５２】
一方、前記ネジ杆１３の下端には、該ネジ杆１３を螺合するネジ穴１９を有する金属製の円筒体１８が螺着されており、該円筒体１８はネジ杆１３に対して回り止めピン２０により共回り可能に結合されている。なお、ネジ杆１３と円筒体１８とは他の結合手段により共回り可能に結合してもよく、またネジ杆１３の下端に円形ボスを一体に形成してもよい。
【００５３】
前記金属製基台１４は、矩形状を呈しており、その中央には、前記ネジ杆１３下端の円筒体１８を回動可能に収容し得る円形収容部２２を床下スラブ２との間に形成する円形突部２１が一体に突設されている。なお、該円形突部２１の中央には前記ネジ杆１３を嵌挿するための貫通孔２３が形成されている。なお、金属製基台１４の形状は、矩形に限定されず、丸形等とすることもできる。符号２４，２５は前記ネジ杆１３に螺着されるナットで、ナット２４は前記受金具１０の筒部１０ａ下端に当接されて受金具１０の移動を阻止し、ナット２５は前記円形突部２１の上面に当接される。
【００５４】
図面中、２７は受金具１０を緩衝材１２とともに床下地材３に結合するためのドライウォールスクリュー、２８は金属製基台１４を床下スラブ２に結合するためのコンクリートピン、５９はドライウォールスクリュー２７を挿通するための穴である。
【００５５】
次に、図２および図３を参照して、本参考例における支持具４の組み立て手順を説明する。
【００５６】
まず、図３に示すように、ネジ杆１３の下端に円筒体１８を螺着後、回り止めピン２０により共回り可能に結合し、その状態のネジ杆１３を金属製基台１４の円形突部２１における貫通孔２３に下方から挿通して、円筒体１８を円形突部２１内の円形収容部２２内に収容し、その後ナット２５をネジ杆１３に上方から螺合して金属製基台１４とネジ杆１３とを結合させる。しかる後、図２に示すように、ネジ杆１３の上方からナット２４を螺合させた状態で、受金具１０のネジ穴１１にネジ杆１３を螺合させて緩衝材１２の貫通穴１６を貫通させることにより支持具４の組立が完了する。なお、受金具１０および緩衝材１２は、床下地材３の所定位置にドライウォールスクリュー２７により予め取り付けられる。
【００５７】
さらに、前記根太２６は、該床下地材３，３・・相互の連結性を強化するためのものであり、前記床下地材３と同様な構成の中空な金属製四角筒により構成されているが、床下地材３と同等もしくはサイズの小さなものとされている。そして、該根太２６の上面２６ａには、根太２６を床下地材３に固定するためのドライウォールスクリュー２９の頭部２９ａを収容し得る深さの収容溝３０，３０が長手方向に連続して形成されている。このようにしたことにより、ドライウォールスクリュー２９の頭部２９ａが、根太上面２６ａから露出しないこととなり、床材１を根太上面２６ａに張設する際の支障とならない。なお、前記収容溝は１本だけ形成する場合もある。符号３１は根太４２と床下地材３との間に介設緩衝板である。
【００５８】
次に、本参考例にかかる床下地構造の組立手順を説明する。
【００５９】
まず、床下地材３の所定位置（即ち、嵌挿穴９，９・・に対応する位置）に対して緩衝材１２とともに受金具１０をドライウォールスクリュー２７によって予め取り付けておき、次に所定の手続きにより組み立てられた支持具４（即ち、ネジ杆１３と金属製基台１４）のネジ杆１３を受金具１０のネジ穴１１にねじ込んで準備を完了する（図６参照）。この時、ナット２４，２５は緩められている。
【００６０】
しかる後、床下地材３の両端に位置する支持具４，４を床下スラブ２に対してコンクリートピン２８により固定した後、中間部分の支持具４，４・・を調節してコンクリートピン２８で順次固定していく。次いで、床下地材３の上面３ａに形成された作業用穴８からドライバーＤにより床下地材３が水平になるように微調整を行い、ナット２４，２５を締め付けて固定する。この高さ調整は、図５に示すように、床下地材３の作業用穴８から挿入したドライバーＤの先端をネジ杆１３上端面の凹溝１７に挿入してネジ杆１３を回動操作することにより行われる。つまり、ドライバーＤ１本で高さ調整が行えるのである。
【００６１】
上記のような施工を複数の床下地材３，３・・に対して行うことにより複数の床下地材３，３・・が平行に配置されることとなる。しかる後、前記床下地材３，３・・上に、緩衝板３１を介して根太２６，２６・・を直交するようにドライウォールスクリュー２９，２９・・を用いて固定していけば、床下地構造が完成する。
【００６２】
上記のようにして得られた床下地構造は、極めて簡単な構成および作業により完成できるとともに、堅牢且つ低コストなものとなる。特殊な技術を有しない作業者（例えば、大工）でも簡単且つ低コストで工事できるとともに、床材１の張設面（換言すれば、床下地材３の上面３ａ）の水平出し作業も極めて容易となるしかも特殊な技術を有しない作業者（例えば、大工）でも簡単に工事できる。しかも、特殊な床構造のものだけでなく、一般住宅用等にも採用可能な汎用性を有している。
【００６３】
また、金属製の床下地材３を用いているので、シロアリ対策としても極めて有用である。
【００６４】
しかも、床下において床下地材３，３・・相互間に多くの空間が保持されることとなるため、付随工事（例えば、断熱材の敷設、水道工事の配管、電気工事の配線、床暖房の設置等）も極めて簡単に行える。
【００６５】
参考例２
図７および図８には、本願発明の参考例２にかかる床下地構造が示されている。
【００６６】
本参考例の場合、床下地材３，３・・相互の連結性を強化するために、実施例１の根太２６に代えて、該各床下地材３，３・・相互を、該床下地材，３，３・と・直交するフレ止め用のチャンネル３２により連結するようにしている。
【００６７】
次に、前記床下地材３とチャンネル３２との連結構造について説明する。
【００６８】
前記床下地材３の左右側面３ｃ，３ｄの中央部には、前記チャンネル３２を嵌合するためのチャンネル嵌合溝３４を一端側に有する切欠開口３３および該切欠開口３３と対向する切欠開口３５がそれぞれ形成されている。
【００６９】
前記切欠開口３３は、その一端側に形成され且つチャンネル３２の縦幅とほぼ同じ幅（即ち、嵌合されたチャンネル３２の縦方向移動が許容されない幅）を有するチャンネル嵌合溝３４と、該チャンネル嵌合溝３４に連続し且つチャンネル嵌合溝３４の縦幅より大きくしかもチャンネル３２を横向きから縦向きに姿勢変更可能な開口面積を有する矩形開口部３６とからなっている。なお、前記チャンネル嵌合溝３４の深さはチャンネル３２の高さより稍深くするのが、チャンネル３２の製作誤差に対応するために望ましい。
【００７０】
一方、前記切欠開口３５は、前記切欠開口３３におけるチャンネル嵌合溝３４の底面３４ａと同一線上に位置する底面３５ａの上下端から床下地材３の長手方向に延びる係止口縁３７，３７を有しており、該係止口縁３７，３７は、前記チャンネル嵌合溝３４の縦幅より大きな間隔で対峙し且つ切欠開口底面３５ａに近づくに従って相対幅が狭くなるテーパ形状とされている。また、この係止口縁３７，３７の反底面側には、後述する規制金具３８における内向き凸片４１，４１を挿入するための幅広開口部３９が形成されている。該幅広開口部３９の横幅は前記切欠開口３３の矩形開口部３６のそれより大きくされている。
【００７１】
前記規制金具３８は、前記チャンネル嵌合溝３４に嵌合位置決めされた状態のチャンネル３２の端面に対して押圧力を作用させて該チャンネル３２の水平方向移動を規制するものであり、一端側にチャンネル３２に当接される当接面４０ａを有する矩形状の規制金具主体４０と、該規制金具主体４０の上下の一部を前記当接面４０ａより反当接面側に寄った位置において内向きに切り起こしてなる内向き凸片４１，４１と、前記規制金具主体４０の反当接面側端部から前記内向き凸片４１，４１と反対の方向に直角に屈曲された操作部４２とを有している。前記内向き凸片４１，４１は、前記係止口縁３７，３７内面への係合と規制金具主体４０の係止口縁３７，３７外面への係合との挟着力によって係止口縁３７，３７への規制金具３８の係止が得られることとなっている。
【００７２】
また、前記操作部４２は、規制金具３８を係止口縁３７，３７に係止させる際に作業者が手指により押圧操作し易くするためのものである。なお、前記内向き凸片４１，４１の形成位置と係止口縁３７，３７の長さとは、規制金具３８における規制金具主体４０の当接面４０ａがチャンネル３２の端面に当接された状態において両者が係合状態を保持し得るように設定されることは勿論である。
【００７３】
また、前記切欠開口３５の反チャンネル嵌合溝側端部には、前記規制金具３８の操作部４２に対して押圧力を作用させて該規制金具３８の水平方向移動を規制するストッパー４３が一体に設けられている。該ストッパー４３は、前記切欠開口３５の反チャンネル嵌合溝側端部の隅部から中央部に向かって延びる舌状片とされ、前記規制金具３８の取付前には床下地材３の外面と面一状態を保持され、前記規制金具３８の取付後においては適宜個所から外向き直角方向に屈曲されて規制金具３８の操作部４２に対して押圧力を作用し得るものとされている。そして、前記ストッパー４３の操作部４２と対向する面は、その自由端から固定端側に向かって操作部４２側に傾斜するテーパ面４３ａとされている。なお、ストッパー４３の固定端側と係止口縁３７との間には、規制金具３８における内向き凸片４１，４１が挿入できるだけの間隔が形成されることは勿論である。
【００７４】
このようにすると、規制金具３８の取付後に屈曲させるだけでストッパー４３による規制力付与が得られ、規制金具３８の取付時には邪魔にならない。しかも、ストッパー４３と規制金具３８とが接している位置を屈曲位置とすることができ、チャンネル３２および規制金具３８に製作誤差があってもそれに対応して屈曲位置が決められることとなり、ストッパー４３による規制力付与がより確実に得られる。
【００７５】
上記のようにして、床下地材３，３・・相互をチャンネル３２で強固に連結すると、床下地材３，３・・相互の連結性が強固に得られることとなり、極めて堅牢な床下地構造が得られることとなる。
【００７６】
なお、本参考例の場合、床下地材３，３・・の上に直交する根太２６を介することなく直接床材１が張設される。その他の構成および作用効果は参考例１と同様なので重複を避けて説明を省略する。
【００７７】
実施例１
図９には、本願発明の実施例１にかかる床下地構造が示されている。
【００７８】
本実施例の場合、参考例１の床下地構造（図１ないし図４に示すもの）において、床下地材３の両側面３ｃ，３ｄおよび根太２６の両側面には、縦方向に延びる複数のビード６０，６０・・および６１，６１・・が長手方向に所定間隔でそれぞれ形成されている。これらのビード６０，６０・・および６１，６１・・は、床下地材３および根太２６の全域に亙って長手方向にほぼ等間隔で形成されている。このように構成したことにより、床下地材３および根太２６の耐荷重性が大幅に向上することとなり、同一荷重に耐えるものでは薄肉化が図れ、同一肉厚のものでは上下方向荷重に耐える力が増大するため、コスト低減につながる。
【００７９】
また、本実施例の場合、参考例１の床下地構造（図１ないし図４に示すもの）において、ネジ杆１３の上下方向中間部には、補強用の金属製中空筒６２が固定されている。本実施例においては、該金属製中空筒６２は、前記ネジ杆１３より大径の大径筒部６２ａと、該大径筒部６２ａの上下両端に一体形成された前記ネジ杆１３とほぼ同径の小径筒部６２ｂ，６２ｂとからなっており、該小径筒部６２ｂ，６２ｂの上下両端を前記ネジ杆１３に螺着されたナット６３，６４により締め上げて固定されている。なお、金属製中空筒６２の固定方法としては、本実施例の方法の他、溶接による固定等の他の方法を採用する場合もある。また、本実施例の場合、根太２６と床材１との間には、床材１の張設を容易ならしめるための捨貼材６５が介設されているが、該捨貼材６５は省略してもよい。
【００８０】
上記のように構成したことにより、金属製中空筒６２によりネジ杆１３の剛性が強化されることとなり、床下地構造の堅牢性向上が向上する。即ち、床下高さを高くしても十分に堅牢性が確保できることとなる。
【００８１】
なお、根太２６に代えて床下地材３，３・・相互をチャンネル３０により連結する場合もあり、その場合には、床下地材３のビード６０，６０・・は、切欠開口３１，３３が形成される部位を避けて長手方向に等間隔で形成される。その他の構成および作用効果は参考例１と同様なので重複を避けて説明を省略する。
【００８２】
実施例２
図１０には、本願発明の実施例２にかかる床下地構造が示されている。
【００８３】
本実施例の場合、参考例１の床下地構造（図１ないし図４に示すもの）において、床下地材３の両側面３ｃ，３ｄおよび根太２６の両側面には、縦方向に延びる複数のビード６０，６０・・および６１，６１・・が長手方向に所定間隔でそれぞれ形成されている。これらのビード６０，６０・・および６１，６１・・は、床下地材３および根太２６の全域に亙って長手方向にほぼ等間隔で形成されている。このように構成したことにより、床下地材３および根太２６の耐荷重性が大幅に向上することとなり、同一荷重に耐えるものでは薄肉化が図れ、同一肉厚のものでは上下方向荷重に耐える力が増大するため、コスト低減につながる。
【００８４】
また、本実施例の場合、参考例１の床下地構造（図１ないし図４に示すもの）において、ネジ杆１３は、上部ネジ杆６６および下部ネジ杆６７に分割されており、該上部ネジ杆６６の下端部と前記下部ネジ杆６７の上端部とは、両者のネジ部６６ａ，６７ａに対してそれぞれ螺合する内ネジ６８ａ，６８ａを上部および下部にそれぞれ有する補強用の金属製ネジ筒６８を介して共回り可能に連結されている。該金属製ネジ筒６８は、ネジ杆１３より大径の大径筒部６８ｂと、該大径筒部６８ｂの上下両端に一体形成され且つ前記内ネジ６８ａ，６８ａを有する前記ネジ杆１３とほぼ同径の小径筒部６８ｃ，６８ｃとからなっており、該小径筒部６８ｃ，６８ｃの上下両端を前記ネジ杆１３に螺着されたナット６３，６４により締め上げて固定されている。また、本実施例の場合、根太２６と床材１との間には、床材１の張設を容易ならしめるための捨貼材６５が介設されているが、該捨貼材６５は省略してもよい。
【００８５】
上記のように構成したことにより、金属製ネジ筒６８によりネジ杆１３の剛性が強化されることとなり、床下地構造の堅牢性向上が向上する。即ち、床下高さを高くしても十分に堅牢性が確保できることとなる。また、金属製ネジ筒６８の長さを変えることにより床下高さを変化させることも可能となり、床下高さの異なるものへの対応性向上に寄与する。
【００８６】
なお、根太２６に代えて床下地材３，３・・相互をチャンネル３０により連結する場合もあり、その場合には、床下地材３のビード６０，６０・・は、切欠開口３１，３３が形成される部位を避けて長手方向に等間隔で形成される。その他の構成および作用効果は参考例１と同様なので重複を避けて説明を省略する。
【００８７】
本願発明は、上記各実施例の構成に限定されるものではなく、発明の要旨を逸脱しない範囲において適宜設計変更可能なことは勿論である。
【図面の簡単な説明】
【００８８】
【図１】本願発明の参考例１にかかる床下地構造の要部を示す断面図である。
【図２】本願発明の参考例１にかかる床下地構造における床下地材と支持具上部との分解斜視図である。
【図３】本願発明の参考例１にかかる床下地構造における支持具下部の分解斜視図である。
【図４】本願発明の参考例１にかかる床下地構造の要部を示す側面図である。
【図５】本願発明の参考例１にかかる床下地構造における床下地材の高さ調整状態を示す断面図である。
【図６】本願発明の参考例１にかかる床下地構造における床下地材の配設手順を示す側面図である。
【図７】本願発明の参考例２にかかる床下地構造の要部を示す部分側面図である。
【図８】本願発明の参考例２にかかる床下地構造における床下地材とチャンネルとの連結状態を示す斜視図である。
【図９】本願発明の実施例１にかかる床下地構造の要部を示す断面図である。
【図１０】本願発明の実施例２にかかる床下地構造の要部を示す断面図である。
【符号の説明】
【００８９】
１は床材、２は床下スラブ、３は床下地材、３ａは上面、３ｂは下面、３ｃ，３ｄは側面、４は支持具、５はコーナ型接続部、６は逆Ｊ字状折曲部、７は逆Ｕ字状折曲部、８は作業用穴、９は嵌挿穴、１０は受金具、１１はネジ穴、１２は緩衝材、１３はネジ杆、１４は金属製基台、１７は回動操作部（凹溝）、２６は根太、２６ａは上面、２９はドライウォールスクリュー、２９ａは頭部、３０は収容溝、３１は緩衝板、３２はチャンネル、６０，６１はビード、６２は金属製中空筒、６６は上部ネジ杆、６６ａはネジ部、６７は下部ネジ杆、６７ａはネジ部、６８は金属製ネジ筒、６８ａは内ネジ、Ｄはドライバー、Ｐは金属板。[0002]
[Industrial application fields]
[0003]
  The present invention relates to a floor foundation structure in a building, and more particularly to a middle and high floor type floor foundation structure.
[Prior art]
[0004]
  For example, as a floor base structure using a metal floor base material, one using a Japanese industrial standard JIS A6519 steel floor base material for gymnasiums is well known.
[0005]
  Further, a floor base material having a special structure developed for an OA floor such as a computer room is also known.
[0006]
  Further, what is well known as a floor foundation structure for a general house is that a wooden jack is placed on the underfloor slab, a wooden joist is placed on the jack, and a floor is placed on the wooden joist. There is something that stretches the material. In this case, it is necessary to take countermeasures against termites, but as countermeasures, only measures to immerse chemicals for termite extermination in Daiki and jota.
[Problems to be solved by the invention]
[0007]
  However, in the case of the floor base structure using the steel floor base material for gymnasium described above, there is a problem that since it is limited to the gymnasium, it lacks versatility and is generally difficult to spread because of its high cost.
[0008]
  In addition, for the OA floor, many support members having a complicated structure are interposed between the under-floor slab and the floor material, and the connecting portion between each support member and the floor material is a floor. Since the bottom surface of the material is specially processed to fit the upper end of the support member, the structure becomes complicated, the number of parts and the number of processing steps increase, and there is a problem that costs cannot be increased. is there. Moreover, workability also deteriorates because it takes a lot of time to adjust the height of each support member. In addition, since it is exclusively for the OA floor, there is a problem that it is not versatile and generally difficult to spread.
[0009]
  Furthermore, when a floor base structure is formed by a combination of wooden pulling and joists, there is a problem that the configuration itself is complicated and the assembly work must be complicated. In addition, there is also a problem that simply immersing chemicals in the wood used is not perfect as a termite countermeasure.
[0010]
  One of the main reasons why metal floor base materials were not used in ordinary houses is that carpenters do not like the use because of their complicated structure and enforcement method.
[0011]
  By the way, since it is difficult for people to pass during the construction of the floor base, prolonging the construction period often disturbs other constructions. Accordingly, the shorter the floor construction period, the better. However, in the case of the conventional floor base structure described above, most of the members constituting the floor base can only be assembled on site, and there is a problem that it is difficult to shorten the construction period. In particular, OA floors could only be assembled on site.
[0012]
  Under the circumstances as described above, there is an increasing expectation for a floor base structure using a metal floor base material that is extremely lightweight and has a simple structure, requires no special technique, and can be constructed at a low cost and in a short construction period.
[0013]
  The present invention has been made in view of the above points, and is a floor base structure using a floor base material having a very simple structure, which can be easily implemented by a person who does not have a special technique, and has a low cost. The purpose is to make it possible to greatly reduce the construction period and the construction period.
[Means for Solving the Problems]
[0014]
  The floor foundation structure of the invention according to claim 1 is a plurality of floor foundations composed of hollow metal square cylinders arranged in a horizontal and parallel state at a predetermined interval between a floor material 1 and an underfloor slab 2. In the floor base structure in which the materials 3, 3,... And a plurality of supports 4, 4,... Supporting the respective floor base materials 3 with respect to the underfloor slab 2 are provided.Each floor base material 3 is formed by bending a metal plate P cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P In addition, an inverted J-shaped bent portion 6 is provided which is bent inwardly and further has its tip end bent outwardly, while the other end of the metal plate P has an inverted U-shape inwardly. Are provided with an inverted U-shaped bent portion 7 that is bent to form a corner-type connecting portion 5 that is continuously fitted and pressure-bonded to be continuous in the longitudinal direction.A bracket 10 having a U-shaped cross section and a screw hole 11 in the center of the bottom to hold the support 4 on the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and the bracket 10 and a buffer material 12 interposed between the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and the underfloor slab 2. The floor base material 3 can be adjusted in height by a turning operation of the screw rod 13 and is reinforced at the middle portion in the vertical direction of the screw rod 13. The metal hollow cylinder 62 for use is fixed.
[0015]
  The floor foundation structure of the invention according to claim 2 is a plurality of floor foundations composed of hollow metal square cylinders arranged in a horizontal and parallel state at a predetermined interval between the floor material 1 and the underfloor slab 2. In the floor base structure in which the materials 3, 3,... And a plurality of supports 4, 4,... Supporting the respective floor base materials 3 with respect to the underfloor slab 2 are provided.Each floor base material 3 is formed by bending a metal plate P cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P In addition, an inverted J-shaped bent portion 6 is provided which is bent inwardly and further has its tip end bent outwardly, while the other end of the metal plate P has an inverted U-shape inwardly. Bent to The reverse U-shaped bent portion 7 is provided, and both are continuously fitted and crimped to form a corner type connecting portion 5 continuous in the longitudinal direction,A bracket 10 having a U-shaped cross section and a screw hole 11 in the center of the bottom to hold the support 4 on the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and the bracket 10 and a buffer material 12 interposed between the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and the underfloor slab 2. And the height of the floor base material 3 can be adjusted by rotating the screw rod 13, and the screw rod 13 is connected to the upper screw rod 66. The inner screws 68a and 68a are divided into upper and lower screw rods 67, and the lower ends of the upper screw rods 66 and the upper ends of the lower screw rods 67 are respectively screwed into the screw portions 66a and 67a. And reinforcing metal at the bottom Is characterized in that linked co-rotation can be via the screw cylinder 68.
[0016]
  In the floor foundation structure of the invention according to claims 1 and 2, there are the following preferred embodiments.
[0017]
  In other words, the upper end of the screw base 13 passes through the lower surface 3 b of the floor base material 3 and faces the floor base material 3, and the rotation operation portion 17 is provided at the upper end, while the upper surface 3 a of the floor base material 3 is provided. In addition, it is preferable to form the working hole 8 at a position opposite to the upper end of the screw rod 13 from the viewpoint of facilitating the height adjustment of the floor base material 3. It is more preferable to use a recessed groove that can be inserted in that the height of the floor base material 3 can be adjusted with a single screwdriver.
[0018]
  Further, the floor base materials 3, 3... Are connected to each other by a channel 32 for anti-fretting perpendicular to the floor base materials 3, 3, or the floor material 1 and the floor base materials 3, 3. Interposing a plurality of joists 26, 26... Made of a hollow metal square tube orthogonal to the floor base material 3, 3... Can enhance the robustness of the floor base structure. It is preferable at this point, and it is preferable to form a receiving groove 30 extending in the longitudinal direction and having a depth capable of receiving the head 29a of the dry wall screw 29 for fixing the joist 26 on the upper surface 26a of each joist 26. It is preferable in that the weight 26 can be reduced in weight and the strength can be increased, and the head 29a of the dry wall screw 29 for fixing the joist 26 is not exposed on the joist upper surface 26a.
[0019]
  Also beforeRootThe thick plate 26 is formed by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact with one point of a corner, and is folded inward at one end of the metal plate P. While being provided with an inverted J-shaped bent portion 6 that is bent and further bent outward, the other end of the metal plate P is bent in an inverted U-shape on the inside. It is possible to obtain a lightweight, robust and low-cost floor base structure by providing an inverted U-shaped bent portion 7 and continuously fitting and crimping both to form a corner-type connecting portion 5 continuous in the longitudinal direction. This is preferable.
[0020]
  In addition, it is preferable that a plurality of beads 61, 61,... Extending in the longitudinal direction are formed on both side surfaces of each joist 26 at predetermined intervals in the longitudinal direction from the viewpoint of improving the load resistance of the joist 26.
[0021]
  In addition, it is possible to improve the load resistance of the floor base material 3 by forming a plurality of beads 60, 60... Extending in the longitudinal direction at predetermined intervals on both side surfaces 3 c and 3 d of the floor base material 3. This is preferable.
[Action]
[0022]
  In the floor foundation structure of the invention according to claim 1, the following action is obtained by the above means.
[0023]
  That is,The floor base material 3 is formed by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P, An inverted J-shaped bent portion 6 is provided, which is bent at the tip and further bent outward. On the other hand, the other end of the metal plate P is provided with an inverted U-shaped bent portion 7 which is bent in an inverted U shape on the inner side, and both are continuously fitted and crimped in the horizontal direction. Since it is formed as a continuous corner-type connecting portion 5, the floor base material 3 can be constituted by the thin metal plate P, so that a light, robust and low-cost floor base structure can be obtained.
[0024]
  Also,The floor base material 3, 3,... Supported by a plurality of support tools 4, 4,... Are placed in a horizontal state on the slab 2 under the floor, and the floor material 1 can be tensioned only by rotating the screw rod 13. The installation surface (in other words, the upper surface 3a of the floor base material 3) can be easily leveled, and a robust floor base structure can be easily obtained with an extremely simple configuration and operation. Further, by fixing the reinforcing metal hollow cylinder 62 to the middle portion of the screw rod 13 in the vertical direction, the rigidity of the screw rod 13 is strengthened by the metal hollow tube 62, so that the floor base structure is robust. Contributes to improved performance.
[0025]
  In the floor foundation structure of the invention according to claim 2, the following action is obtained by the above means.
[0026]
  That is,The floor base material 3 is formed by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P, Is provided with an inverted J-shaped bent portion 6 which is bent to the outside and further bent toward the outside, while the other end of the metal plate P is folded in an inverted U-shape on the inside. Since the bent U-shaped bent portion 7 is provided and both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the horizontal direction, the thin metal plate P Since the floor base material 3 can be configured, a lightweight, robust and low-cost floor base structure can be obtained.
[0027]
  Also,The floor base material 3, 3,... Supported by a plurality of support tools 4, 4,... Are placed in a horizontal state on the slab 2 under the floor, and the floor material 1 can be tensioned only by rotating the screw rod 13. The installation surface (in other words, the upper surface 3a of the floor base material 3) can be easily leveled, and a robust floor base structure can be easily obtained with an extremely simple configuration and operation. Further, the screw rod 13 is divided into an upper screw rod 66 and a lower screw rod 67, and a lower end portion of the upper screw rod 66 and an upper end portion of the lower screw rod 67 are formed into both screw portions 66a and 67a. By connecting the inner screws 68a and 68a, which are respectively screwed to each other, through a reinforcing metal screw cylinder 67 having upper and lower portions, respectively, the metal screw cylinder 67 allows the rigidity of the screw rod 13 to be increased. In addition to being strengthened, it is also possible to change the underfloor height by changing the length of the metal screw cylinder 67, which contributes to improved robustness of the underfloor structure and improved compatibility with different underfloor heights. .
[0028]
  In a preferred embodiment of the invention according to claim 1 and claim 2, the following operation is obtained.
[0029]
  In other words, the upper end of the screw base 13 passes through the lower surface 3 b of the floor base material 3 and faces the floor base material 3, and the rotation operation portion 17 is provided at the upper end, while the upper surface 3 a of the floor base material 3 is provided. Further, if the working hole 8 is formed at a position opposite to the upper end of the screw rod 13, the height of the floor base material 3 can be easily adjusted by the operation of the rotating operation portion 17 from the working hole 8. If the turning operation portion 17 is a concave groove into which the tip of the driver D can be inserted, the height of the floor base material 3 can be adjusted with one screwdriver.
[0030]
  Also,The floor base materials 3, 3... Are connected to each other by a channel 32 for anti-fretting orthogonal to the floor base material 3, or the floor base material 3 is interposed between the floor material 1 and the floor base material 3. When a plurality of joists 26, 26,... Made of hollow metal square cylinders orthogonal to 3 are interposed, floor base materials 3, 3,. In this case, the upper surface 26a of each joist 26 has a depth that extends in the longitudinal direction and can accommodate the head 29a of the dry wall screw 29 for fixing the joist 26. When the accommodation groove 30 is formed, the head portion 29a of the dry wall screw 29 for fixing the joist 26 is not exposed from the joist upper surface 26a, and the floor material 1 is not hindered.
[0031]
  Also beforeRootThick26The metal plate P cut into a predetermined width is bent into a rectangular tube shape so that both ends thereof are in contact with one point of the corner, and is bent inward at one end of the metal plate P. In addition, an inverted J-shaped bent portion 6 is provided, the tip of which is bent outward, while the other end of the metal plate P is bent in an inverted U-shape on the inside. When the reverse U-shaped bent portion 7 is provided, and both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the horizontal direction, a thin metal plate P is used.RootSince the thick 26 can be formed, a light, robust and low-cost floor foundation structure can be obtained.
[0032]
  Further, when a plurality of beads 60, 60,... Extending in the longitudinal direction are formed on both side surfaces 3c, 3d of each floor base material 3 at predetermined intervals in the longitudinal direction, the load resistance of the floor base material 3 is improved. In other words, it is possible to reduce the thickness if the load can withstand the same load, and to reduce the cost because the force that can withstand the vertical load increases if the thickness is the same.
[0033]
  Further, when a plurality of beads 61, 61... Extending in the longitudinal direction are formed on both side surfaces of each joist 26 at a predetermined interval in the longitudinal direction, the load resistance of the joist 26 is greatly improved. If it can withstand the load, the thickness can be reduced, and if it has the same thickness, the force to withstand the vertical load increases, leading to a reduction in cost.
【The invention's effect】
[0034]
  According to the floor foundation structure of the invention according to claim 1, a plurality of hollow square metal tubes that are arranged horizontally in parallel with a predetermined interval between the floor material 1 and the underfloor slab 2. In the floor base structure in which the floor base materials 3, 3... And the plurality of supports 4, 4.The floor base material 3 is configured by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P, While providing an inverted J-shaped bent portion 6 which is bent inward and further bent at the tip thereof toward the outer side, the other end of the metal plate P has an inverted U-shape inward. Since the bent reverse U-shaped bent portion 7 is provided and the both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the horizontal direction, the thin metal plate P Thus, the floor base material 3 can be constructed, so that there is an effect that a light, robust and low-cost floor base structure can be obtained.
[0035]
  Also,The support 4 is configured to have a U-shaped cross-section upward so as to hold the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and a receiving bracket 10 having a screw hole 11 in the center of the bottom, the receiving bracket 10 and a buffer material 12 interposed between the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and the underfloor slab 2. And a plurality of support tools 4 on the underfloor slab 2 so that the height of the floor base material 3 can be adjusted by rotating the screw rod 13. 4. The floor base materials 3, 3,... Supported by 4 ... are arranged in a horizontal state, and the tensioning surface of the floor material 1 (in other words, the floor base material 3 by simply rotating the screw rod 13). The top surface 3a) can be leveled easily. A robust floor foundation structure can be obtained, and even an operator (for example, a carpenter) who does not have a special technique can easily and inexpensively perform the construction, and the floor surface 1 (in other words, the floor foundation material 3). There is an effect that the leveling operation of the upper surface 3a) is extremely easy. Moreover, there is an effect that it has versatility that can be adopted not only for a special floor structure but also for ordinary houses. Further, by fixing the reinforcing metal hollow cylinder 62 to the middle portion of the screw rod 13 in the vertical direction, the rigidity of the screw rod 13 is strengthened by the metal hollow tube 62, so that the floor base structure is robust. There is also an effect that it contributes to the improvement of performance.
[0036]
  Moreover, since the metal floor base material 3 is used, it is extremely useful as a termite countermeasure.
[0037]
  Moreover, since a lot of space is maintained between the floor base materials 3 and 3 under the floor, it is necessary to perform ancillary work (for example, laying insulation, piping for waterworks, wiring for electrical work, floor heating) There is also an advantage that installation etc. can be performed very easily.
[0038]
  According to the floor foundation structure of the invention according to claim 2, a plurality of hollow rectangular metal tubes that are arranged in a horizontal state with a predetermined interval between the floor material 1 and the underfloor slab 2. In the floor base structure in which the floor base materials 3, 3... And the plurality of supports 4, 4.The floor base material 3 is configured by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and at one end of the metal plate P, While providing an inverted J-shaped bent portion 6 which is bent inward and further bent at the tip thereof toward the outer side, the other end of the metal plate P has an inverted U-shape inward. Since the bent reverse U-shaped bent portion 7 is provided and the both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the horizontal direction, the thin metal plate P Thus, the floor base material 3 can be constructed, so that there is an effect that a light, robust and low-cost floor base structure can be obtained.
[0039]
  Also,The support 4 is configured to have a U-shaped cross-section upward so as to hold the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and a receiving bracket 10 having a screw hole 11 in the center of the bottom, the receiving bracket 10 and a buffer material 12 interposed between the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and the underfloor slab 2. And a plurality of support tools 4 on the underfloor slab 2 so that the height of the floor base material 3 can be adjusted by rotating the screw rod 13. 4. The floor base materials 3, 3,... Supported by 4 ... are arranged in a horizontal state, and the tensioning surface of the floor material 1 (in other words, the floor base material 3 by simply rotating the screw rod 13). The top surface 3a) can be leveled easily. A robust floor foundation structure can be obtained, and even an operator (for example, a carpenter) who does not have a special technique can easily and inexpensively perform the construction, and the floor surface 1 (in other words, the floor foundation material 3). There is an effect that the leveling operation of the upper surface 3a) is extremely easy. Moreover, there is an effect that it has versatility that can be adopted not only for a special floor structure but also for ordinary houses. Further, the screw rod 13 is divided into an upper screw rod 66 and a lower screw rod 67, and a lower end portion of the upper screw rod 66 and an upper end portion of the lower screw rod 67 are formed into both screw portions 66a and 67a. By connecting the inner screws 68a and 68a, which are respectively screwed to each other, through a reinforcing metal screw cylinder 67 having upper and lower portions, respectively, the metal screw cylinder 67 allows the rigidity of the screw rod 13 to be increased. In addition to being strengthened, it is also possible to change the underfloor height by changing the length of the metal screw cylinder 67, which contributes to improved robustness of the underfloor structure and improved compatibility with different underfloor heights. There is also an effect.
[0040]
  Moreover, since the metal floor base material 3 is used, it is extremely useful as a termite countermeasure.
[0041]
  Moreover, since a lot of space is maintained between the floor base materials 3 and 3 under the floor, it is necessary to perform ancillary work (for example, laying insulation, piping for waterworks, wiring for electrical work, floor heating) There is also an advantage that installation etc. can be performed very easily.
【Example】
[0042]
  Hereinafter, some preferred embodiments and reference examples of the present invention will be described with reference to the accompanying drawings.
[0043]
  Reference example 1
  1 to 6 show a floor foundation structure according to Reference Example 1 of the present invention.
[0044]
  As shown in FIGS. 1 to 4, the floor foundation structure of this reference example has a floor material 1 and a floor slab (thisreferenceIn the case of the example, a plurality of floor base materials 3 consisting of hollow metal square tubes arranged in a parallel state with a predetermined interval between them and a concrete slab) 2, and each floor base material 3 It is comprised by interposing several support tool 4,4 ... supported with respect to the said underfloor slab 2. As shown in FIG. In the case of this reference example, a joist 26 orthogonal to the floor base material 3 is interposed between the floor material 1 and the floor base material 3.
[0045]
  The floor base material 3 is formed by bending a metal plate P cut to a predetermined width into a square tube shape so that both ends thereof are in contact with one point of a corner. Is provided with an inverted J-shaped bent portion 6 that is bent inward and further bent at the tip thereof outward, and the other end of the metal plate P has an inverted U-shape inside. An inverted U-shaped bent portion 7 that is bent in a letter shape is provided, and is formed as a corner-type connecting portion 5 that is continuously fitted and crimped together to be continuous in the longitudinal direction. And this floor base material 3 is arrange | positioned so that the corner type | mold connection part 5 may be located below, and the upper surface 3a is used as the extending | stretching surface of the flooring 1. As shown in FIG. If comprised in this way, since the floor base material 3 can be comprised with the thin metal plate P, while being able to obtain the lightweight, robust and low-cost floor base structure, the upper surface 3a of the floor base material 3 can be used effectively. become.
[0046]
  On the upper surface 3a of the floor base material 3, a plurality of work holes 8, 8,... Are formed at predetermined intervals in the longitudinal direction. The working hole 8 only needs to have an opening area enough to allow insertion of a driver D for rotating a screw rod 13 to be described later, and the shape can be selected as appropriate other than the rectangular shape shown in the figure. .
[0047]
  Further, a circular fitting hole 9 for fitting a part of the cushioning material 12 (that is, the cylindrical convex portion 15) in the support 4 described in detail later is formed on the lower surface 3b of the floor base material 3. It is formed corresponding to the working holes 8, 8,.
[0048]
  The support 4 is configured to have a U-shaped cross-section upward to hold the lower surface 3b and the left and right side surfaces 3c, 3d of the floor base material 3, and has a receiving bracket 10 having a screw hole 11 at the bottom center, A cushioning material 12 interposed between the metal fitting 10 and the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and the under-floor slab 2 and a metal base 14 fixed to 2.
[0049]
  The screw hole 11 is formed on the inner peripheral surface of a cylindrical portion 10 a that protrudes downward from the center of the bottom of the metal fitting 10.
[0050]
  The cushioning material 12 is made of hard synthetic rubber or the like and has the same shape as the bracket 10, and has a through hole 16 corresponding to the screw hole 11 and having a slightly larger diameter than the screw hole 11 at the center of the bottom. A cylindrical convex portion 15 is integrally formed. The cylindrical convex portion 15 is inserted into the insertion hole 9 formed in the lower surface 3b of the floor base material 3 when the cushioning material 12 is attached, and restricts the movement of the cushioning material 12 and also includes the screw rod 13 and the underfloor. Friction with the base material 3 (specifically, the screw thread penetrating portion) is avoided to prevent floor scumming.
[0051]
  The screw rod 13 is screwed into the screw hole 11, and the upper end thereof passes through the through hole 16 of the cylindrical convex portion 15 in the cushioning material 12 (in other words, penetrates the lower surface 3 b of the floor base material 3. E) facing the floor base material 3. A concave groove 17 is formed on the upper end surface of the screw rod 13. The concave groove 17 is inserted into the front end of the driver D, and acts as a rotation operation unit for rotating the screw rod 13. In addition to the concave groove of the present embodiment, various types of shapes (for example, a polygonal portion formed at the upper end of the screw rod 13) are employed as the rotation operation unit in accordance with the type of the rotation tool. Is possible.
[0052]
  On the other hand, a metal cylinder 18 having a screw hole 19 for screwing the screw rod 13 is screwed to the lower end of the screw rod 13, and the cylinder 18 is prevented from rotating with respect to the screw rod 13. The pins 20 are coupled so as to be able to rotate together. The screw rod 13 and the cylindrical body 18 may be coupled together by other coupling means, and a circular boss may be integrally formed at the lower end of the screw rod 13.
[0053]
  The metal base 14 has a rectangular shape, and a circular accommodating portion 22 capable of rotatably accommodating the cylindrical body 18 at the lower end of the screw rod 13 is formed between the metal base 14 and the underfloor slab 2. A circular protrusion 21 is integrally projected. A through hole 23 for inserting the screw rod 13 is formed at the center of the circular protrusion 21. The shape of the metal base 14 is not limited to a rectangle, and may be a round shape. Reference numerals 24 and 25 are nuts to be screwed onto the screw rod 13, and the nut 24 is brought into contact with the lower end of the cylindrical portion 10 a of the metal fitting 10 to prevent the metal fitting 10 from moving. 21 is brought into contact with the upper surface of 21.
[0054]
  In the drawing, 27 is a dry wall screw for connecting the metal fitting 10 to the floor base material 3 together with the cushioning material 12, 28 is a concrete pin for connecting the metal base 14 to the underfloor slab 2, 59 is a dry wall screw. 27 is a hole for inserting 27.
[0055]
  Next, with reference to FIG. 2 and FIG. 3, the assembly procedure of the support 4 in this reference example is demonstrated.
[0056]
  First, as shown in FIG. 3, after the cylindrical body 18 is screwed to the lower end of the screw rod 13, the screw rod 13 in this state is coupled to the circular protrusion of the metal base 14. The cylindrical body 18 is inserted into the through hole 23 in the portion 21 from below, and the cylindrical body 18 is accommodated in the circular accommodating portion 22 in the circular protrusion 21, and then the nut 25 is screwed onto the screw rod 13 from above to form a metal base. 14 and the screw rod 13 are coupled. After that, as shown in FIG. 2, in a state where the nut 24 is screwed from above the screw rod 13, the screw rod 13 is screwed into the screw hole 11 of the bracket 10, and the through hole 16 of the buffer material 12 is formed. By assembling, the assembly of the support 4 is completed. Note that the metal fitting 10 and the buffer material 12 are attached in advance to a predetermined position of the floor base material 3 by the dry wall screw 27.
[0057]
  Further, the joist 26 is for reinforcing the connectivity of the floor base material 3, 3... And is constituted by a hollow metal square tube having the same configuration as the floor base material 3. However, it is assumed to be the same as or smaller in size than the floor base material 3. On the upper surface 26a of the joist 26, receiving grooves 30 and 30 having a depth capable of receiving the head 29a of the dry wall screw 29 for fixing the joist 26 to the floor base material 3 are continuous in the longitudinal direction. Is formed. By doing in this way, head 29a of drywall screw 29 will not be exposed from joist upper surface 26a, and it will not become a hindrance at the time of laying flooring 1 on joist upper surface 26a. Note that only one receiving groove may be formed. Reference numeral 31 denotes an interposed buffer plate between the joist 42 and the floor base material 3.
[0058]
  Next, the procedure for assembling the floor foundation structure according to this reference example will be described.
[0059]
  First, the metal fitting 10 together with the cushioning material 12 is attached in advance to the predetermined position of the floor base material 3 (that is, the position corresponding to the insertion holes 9, 9,. The screw rod 13 of the support 4 (that is, the screw rod 13 and the metal base 14) assembled by the procedure is screwed into the screw hole 11 of the metal fitting 10 to complete the preparation (see FIG. 6). At this time, the nuts 24 and 25 are loosened.
[0060]
  Thereafter, the support members 4 and 4 positioned at both ends of the floor base material 3 are fixed to the under-floor slab 2 by the concrete pins 28, and then the intermediate support members 4, 4. Fix it sequentially. Next, fine adjustment is performed by the driver D so that the floor base material 3 is horizontal from the work hole 8 formed in the upper surface 3a of the floor base material 3, and the nuts 24 and 25 are tightened and fixed. As shown in FIG. 5, this height adjustment is performed by rotating the screw rod 13 by inserting the tip of the driver D inserted from the work hole 8 of the floor base material 3 into the concave groove 17 on the upper end surface of the screw rod 13. Is done. That is, the height can be adjusted with one driver D.
[0061]
  By performing the above construction on the plurality of floor base materials 3, 3,..., The plurality of floor base materials 3, 3,. Thereafter, if the joists 26, 26,... Are fixed to the floor base materials 3, 3,. The geological structure is completed.
[0062]
  The floor foundation structure obtained as described above can be completed with an extremely simple structure and operation, and is robust and low-cost. Workers who do not have special techniques (for example, carpenters) can perform construction easily and at low cost, and the leveling work of the tensioning surface of the flooring 1 (in other words, the upper surface 3a of the floor base material 3) is extremely easy. Moreover, even a worker who does not have special technology (for example, a carpenter) can easily perform the construction. Moreover, it has versatility that can be used not only for special floor structures but also for ordinary houses.
[0063]
  Moreover, since the metal floor base material 3 is used, it is extremely useful as a termite countermeasure.
[0064]
  In addition, since a lot of space is maintained between the floor base materials 3, 3 ... under the floor, it is necessary to carry out incidental work (for example, laying insulation, piping for waterworks, wiring for electrical work, floor heating, etc.) Installation etc.) can be done very easily.
[0065]
  Reference example 2
  7 and 8 show a floor foundation structure according to Reference Example 2 of the present invention.
[0066]
  BookreferenceIn the case of the example, in order to reinforce the mutual connectivity of the floor base materials 3, 3..., The floor base materials 3, 3. 3 and 3 are connected by a channel 32 for anti-fretting which is orthogonal.
[0067]
  Next, a connection structure between the floor base material 3 and the channel 32 will be described.
[0068]
  A cutout opening 33 having a channel fitting groove 34 for fitting the channel 32 on one end side and a cutout opening 35 facing the cutout opening 33 at the center of the left and right side surfaces 3c and 3d of the floor base material 3 are provided. Are formed respectively.
[0069]
  The notch opening 33 is formed at one end thereof and has a channel fitting groove 34 having a width substantially the same as the vertical width of the channel 32 (that is, a width in which the fitted channel 32 is not allowed to move in the vertical direction); The rectangular opening 36 is continuous with the channel fitting groove 34 and is larger than the vertical width of the channel fitting groove 34 and has an opening area capable of changing the posture of the channel 32 from the horizontal direction to the vertical direction. It is preferable that the depth of the channel fitting groove 34 is deeper than the height of the channel 32 in order to cope with manufacturing errors of the channel 32.
[0070]
  On the other hand, the notch opening 35 has locking mouth edges 37, 37 extending in the longitudinal direction of the floor base material 3 from the upper and lower ends of the bottom surface 35 a located on the same line as the bottom surface 34 a of the channel fitting groove 34 in the notch opening 33. The locking mouth edges 37 and 37 are tapered so that they face each other at a larger interval than the vertical width of the channel fitting groove 34 and the relative width becomes narrower toward the notch opening bottom surface 35a. Further, a wide opening 39 for inserting inwardly projecting pieces 41 and 41 in a regulation fitting 38 to be described later is formed on the opposite bottom side of the locking mouth edges 37 and 37. The width of the wide opening 39 is larger than that of the rectangular opening 36 of the notch opening 33.
[0071]
  The restricting bracket 38 restricts the horizontal movement of the channel 32 by applying a pressing force to the end face of the channel 32 in a state of being fitted and positioned in the channel fitting groove 34. A rectangular regulating bracket main body 40 having an abutting surface 40a that abuts against the channel 32, and a part of the upper and lower portions of the regulating bracket main body 40 at a position closer to the side opposite to the abutting surface than the abutting surface 40a. Inwardly convex pieces 41, 41 cut and raised in the direction, and an operation part 42 bent at a right angle in a direction opposite to the inwardly convex pieces 41, 41 from the end portion on the side opposite to the abutment surface of the restriction metal main body 40. And have. The inwardly convex pieces 41, 41 are engaged with the engagement mouth edge 37, 37 by the clamping force between the engagement with the inner surface of the engagement mouth edge 37, 37 and the engagement with the engagement mouth edge 37, 37 of the restricting fitting main body 40. Locking of the restricting metal fitting 38 to 37, 37 is to be obtained.
[0072]
  The operation portion 42 is for facilitating a pressing operation by a finger with the finger when the restriction fitting 38 is locked to the locking mouth edges 37, 37. The position where the inwardly projecting pieces 41 and 41 are formed and the length of the locking mouth edges 37 and 37 are such that the contact surface 40a of the restricting fitting main body 40 of the restricting fitting 38 is in contact with the end face of the channel 32. Of course, it is set so that both can maintain the engaged state.
[0073]
  Further, a stopper 43 for restricting the horizontal movement of the restricting fitting 38 by applying a pressing force to the operation portion 42 of the restricting fitting 38 is integrated with the end portion of the notch opening 35 on the side opposite to the channel fitting groove. Is provided. The stopper 43 is a tongue-shaped piece extending from the corner of the notch opening 35 on the side opposite to the channel fitting groove toward the center, and before the mounting of the regulation fitting 38, the stopper 43 The flat state is maintained, and after the mounting of the restricting metal fitting 38, it can be bent from an appropriate position in a right-angled outward direction so that a pressing force can be applied to the operating portion 42 of the restricting metal fitting 38. The surface of the stopper 43 that faces the operation portion 42 is a tapered surface 43a that is inclined toward the operation portion 42 from the free end toward the fixed end. Needless to say, an interval is formed between the fixed end side of the stopper 43 and the locking mouth edge 37 so that the inwardly projecting pieces 41 and 41 of the restricting fitting 38 can be inserted.
[0074]
  If it does in this way, the control force provision by the stopper 43 will be obtained only by making it bend after the attachment of the restriction metal 38, and it will not interfere with the attachment of the restriction metal 38. In addition, the position where the stopper 43 and the regulating bracket 38 are in contact with each other can be set as the bending position, and even if there is a manufacturing error in the channel 32 and the regulating bracket 38, the bending position is determined accordingly. It is possible to more reliably obtain the regulatory power given by.
[0075]
  As described above, when the floor base materials 3, 3,... Are firmly connected by the channel 32, the mutual connection between the floor base materials 3, 3,. Will be obtained.
[0076]
  In the case of the present reference example, the floor material 1 is directly stretched on the floor base materials 3, 3,. Other configurations and operational effects are the same as those in Reference Example 1, and thus the description is omitted to avoid duplication.
[0077]
  Example 1
  Figure9Examples of the invention of the present application1The floor foundation structure is shown.
[0078]
  In the case of this example, a reference example1Floor foundation structure (figure1Or figure4)A plurality of beads 60, 60,..., 61, 61,... Extending in the longitudinal direction are formed at predetermined intervals in the longitudinal direction on both side surfaces 3c, 3d of the floor base material 3 and both side surfaces of the joist 26. These beads 60, 60,..., 61, 61,... Are formed at substantially equal intervals in the longitudinal direction over the entire area of the floor base material 3 and the joists 26. With this configuration, the load bearing capacity of the floor base material 3 and the joist 26 is greatly improved, so that a material that can withstand the same load can be made thinner, and a material that has the same thickness can withstand a vertical load. Increases, leading to cost reduction.
[0079]
  In the case of this example, in the floor foundation structure of Reference Example 1 (shown in FIGS. 1 to 4),A reinforcing metal hollow cylinder 62 is fixed to the middle portion of the screw rod 13 in the vertical direction. In the present embodiment, the metal hollow cylinder 62 is substantially the same as the large-diameter cylindrical portion 62a having a larger diameter than the screw rod 13 and the screw rod 13 integrally formed at the upper and lower ends of the large-diameter cylindrical portion 62a. The small-diameter cylindrical portions 62b and 62b are fixed to each other by tightening the upper and lower ends of the small-diameter cylindrical portions 62b and 62b with nuts 63 and 64 screwed to the screw rod 13. In addition, as a fixing method of the metal hollow cylinder 62, other methods such as fixing by welding may be employed in addition to the method of the present embodiment. Further, in the present embodiment, a scraping material 65 is provided between the joist 26 and the floor material 1 for facilitating the tensioning of the floor material 1, but the scraping material 65 is omitted. May be.
[0080]
  By comprising as mentioned above, the rigidity of the screw rod 13 will be strengthened by the metal hollow cylinder 62, and the robustness improvement of a floor foundation structure will improve. That is, even if the height under the floor is increased, sufficient robustness can be secured.
[0081]
  In addition, instead of the joists 26, the floor base materials 3, 3,... May be connected to each other by a channel 30. In this case, the beads 60, 60,. It is formed at equal intervals in the longitudinal direction while avoiding the site to be formed. Other configurations and operational effects are reference examples1The description is omitted to avoid duplication.
[0082]
  Example2
  Figure10Examples of the invention of the present application2The floor foundation structure is shown.
[0083]
  In the case of this example, the floor foundation structure of Reference Example 1 (Fig.1Or figure4)A plurality of beads 60, 60,..., 61, 61,... Extending in the longitudinal direction are formed at predetermined intervals in the longitudinal direction on both side surfaces 3c, 3d of the floor base material 3 and both side surfaces of the joist 26. These beads 60, 60,..., 61, 61,... Are formed at substantially equal intervals in the longitudinal direction over the entire area of the floor base material 3 and the joists 26. With this configuration, the load bearing capacity of the floor base material 3 and the joist 26 is greatly improved, so that a material that can withstand the same load can be made thinner, and a material that has the same thickness can withstand a vertical load. Increases, leading to cost reduction.
[0084]
  In the case of this example, in the floor foundation structure of Reference Example 1 (shown in FIGS. 1 to 4),The screw rod 13 is divided into an upper screw rod 66 and a lower screw rod 67. The lower end portion of the upper screw rod 66 and the upper end portion of the lower screw rod 67 are in relation to the screw portions 66a and 67a of both. They are coupled so as to be able to rotate together through a reinforcing metal screw cylinder 68 having inner screws 68a and 68a that are respectively screwed into the upper and lower portions. The metal screw cylinder 68 is substantially the same as the screw rod 13 integrally formed at the upper and lower ends of the large-diameter cylinder portion 68b and having the inner screws 68a and 68a. The small-diameter cylindrical portions 68c and 68c have the same diameter. The small-diameter cylindrical portions 68c and 68c are fixed by tightening the upper and lower ends of the small-diameter cylindrical portions 68c and 68c with nuts 63 and 64 screwed onto the screw rod 13. Further, in the present embodiment, a scraping material 65 is provided between the joist 26 and the floor material 1 for facilitating the tensioning of the floor material 1, but the scraping material 65 is omitted. May be.
[0085]
  With the above configuration, the rigidity of the screw rod 13 is reinforced by the metal screw cylinder 68, and the improvement in the robustness of the floor foundation structure is improved. That is, even if the height under the floor is increased, sufficient robustness can be secured. Moreover, it becomes possible to change the underfloor height by changing the length of the metal screw cylinder 68, which contributes to an improvement in adaptability to those having different underfloor heights.
[0086]
  In addition, instead of the joists 26, the floor base materials 3, 3,... May be connected to each other by a channel 30. In this case, the beads 60, 60,. It is formed at equal intervals in the longitudinal direction while avoiding the site to be formed. Other configurations and operational effects are reference examples1The description is omitted to avoid duplication.
[0087]
  The invention of the present application is not limited to the configuration of each of the above embodiments, and it is needless to say that the design can be appropriately changed without departing from the gist of the invention.
[Brief description of the drawings]
[0088]
FIG. 1 is a cross-sectional view showing a main part of a floor foundation structure according to Reference Example 1 of the present invention.
FIG. 2 is an exploded perspective view of the floor base material and the upper part of the support in the floor base structure according to Reference Example 1 of the present invention.
FIG. 3 is an exploded perspective view of the lower part of the support in the floor foundation structure according to Reference Example 1 of the present invention.
FIG. 4 is a side view showing a main part of a floor foundation structure according to Reference Example 1 of the present invention.
FIG. 5 is a cross-sectional view showing the height adjustment state of the floor base material in the floor base structure according to Reference Example 1 of the present invention.
FIG. 6 is a side view showing a procedure for disposing a floor base material in the floor base structure according to Reference Example 1 of the present invention.
FIG. 7 is a partial side view showing a main part of a floor foundation structure according to Reference Example 2 of the present invention.
FIG. 8 is a perspective view showing a connection state between a floor base material and a channel in the floor base structure according to Reference Example 2 of the present invention.
FIG. 9 is a cross-sectional view showing the main parts of the floor foundation structure according to Example 1 of the present invention;
FIG. 10 is a cross-sectional view showing a main part of a floor foundation structure according to Embodiment 2 of the present invention;
[Explanation of symbols]
[0089]
  1 is a flooring material, 2 is a floor slab, 3 is a floor base material, 3a is an upper surface, 3b is a lower surface, 3c and 3d are side surfaces, 4 is a support, 5 is a corner-type connecting portion, and 6 is an inverted J-shaped bend. Part, 7 is an inverted U-shaped bent part, 8 is a work hole, 9 is a fitting insertion hole, 10 is a metal fitting, 11 is a screw hole, 12 is a cushioning material, 13 is a screw rod, 14 is a metal base , 17 is a rotation operation part (concave groove), 26 is a joist, 26a is an upper surface, 29 is a dry wall screw, 29a is a head, 30 is a receiving groove, 31 is a buffer plate, 32 is a channel, and 60 and 61 are beads. , 62 is a metal hollow tube, 66 is an upper screw rod, 66a is a screw portion, 67 is a lower screw rod, 67a is a screw portion, 68 is a metal screw tube, 68a is an internal screw, D is a driver, P is a metal plate .

Claims

Between the floor material (1) and the underfloor slab (2), a plurality of floor base materials (3), (3 And a plurality of supports (4), (4), which support each floor base material (3) with respect to the underfloor slab (2). The floor base material (3) is formed by bending a metal plate (P) cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and the metal plate (P ) Is provided with an inverted J-shaped bent portion (6) which is bent inwardly and further bent at the tip thereof toward the outer side of the metal plate (P). The other end is provided with an inverted U-shaped bent portion (7) which is bent in an inverted U shape on the inner side, and is continuously fitted and crimped to be continuous in the longitudinal direction. Together formed as over Na type connection (5), said support (4) is a bottom (3b) and both sides of the underfloor member (3) (3c), in order to embrace (3d) section A receiving bracket (10) configured in an upward U shape and having a screw hole (11) at the center of the bottom, and a cushioning material (between the receiving bracket (10) and the floor base material (3)) 12), a screw base (13) screwed into the screw hole (11), and a metal base that rotatably supports the screw base (13) and is fixed to the underfloor slab (2) (14), the height of the floor base material (3) can be adjusted by rotating the screw rod (13), and at the middle in the vertical direction of the screw rod (13). Is a floor base structure characterized in that a metal hollow cylinder (62) for reinforcement is fixed.

Between the floor material (1) and the underfloor slab (2), a plurality of floor base materials (3), (3 And a plurality of supports (4), (4), which support each floor base material (3) with respect to the underfloor slab (2). The floor base material (3) is formed by bending a metal plate (P) cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and the metal plate (P ) Is provided with an inverted J-shaped bent portion (6) which is bent inwardly and further bent at the tip thereof toward the outer side of the metal plate (P). The other end is provided with an inverted U-shaped bent portion (7) which is bent in an inverted U shape on the inner side, and is continuously fitted and crimped to be continuous in the longitudinal direction. Together formed as over Na type connection (5), said support (4) is a bottom (3b) and both sides of the underfloor member (3) (3c), in order to embrace (3d) section A receiving bracket (10) configured in an upward U shape and having a screw hole (11) at the center of the bottom, and a cushioning material (between the receiving bracket (10) and the floor base material (3)) 12), a screw base (13) screwed into the screw hole (11), and a metal base that rotatably supports the screw base (13) and is fixed to the underfloor slab (2) (14) and is constituted by, a rotational operation of the screw rod (13) so as to be subjected to height adjustment of the underfloor member (3), said threaded rod (13) has an upper screw rod (66) and a lower screw rod (67), and a lower end portion of the upper screw rod (66) and the lower screw The upper end portion of (67) is a reinforcing metal screw cylinder having inner screws (68a) and (68a) which are respectively screwed into the screw portions (66a) and (67a) of the upper and lower portions, respectively. (68) The floor ground structure characterized by being connected so that it can co-rotate through.

The upper end of the screw rod (13) passes through the lower surface (3b) of the floor base material (3) and faces the floor base material (3), and a rotation operation part (17) is provided at the upper end. The working hole (8) is formed in the upper surface (3a) of the floor base material (3) at a position facing the upper end of the screw rod (13). The floor foundation structure according to any one of claims 1 and 2.

The floor foundation structure according to claim 3, wherein the turning operation part (17) is a concave groove into which a tip of a driver (D) can be inserted.

The floor base materials (3), (3),... Are connected by a channel (32) for anti-fretting perpendicular to the floor base materials (3), (3),. The floor foundation structure according to any one of claims 1 to 4 .

Between the floor material (1) and the floor base material (3), (3),..., A hollow metal square tube orthogonal to the floor base material (3), (3). The floor foundation structure according to any one of claims 1 to 5 , wherein a plurality of joists (26), (26) are interposed.

The upper surface (26a) of each joist (26) extends in the longitudinal direction and has a depth that can accommodate the head (29a) of the dry wall screw (29) for fixing the joist (26). The floor foundation structure according to claim 6, wherein (30) is formed.

Each joist (26) is formed by bending a metal plate (P) cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one point of the corner. One end portion is provided with an inverted J-shaped bent portion (6) which is bent inward and further bent at the tip end portion toward the outer side, and the other end of the metal plate (P) is provided. The end is provided with an inverted U-shaped bent portion (7) which is bent in an inverted U-shape on the inside, and a corner-type connecting portion continuous in the longitudinal direction by continuously fitting and crimping both. The floor foundation structure according to any one of claims 6 and 7 , wherein the floor foundation structure is formed as (5).

Wherein on both sides of each joist (26) has a plurality of beads (61) extending in the longitudinal direction, (61) ... is characterized by being formed at predetermined intervals in the longitudinal direction claim 6 or claim Item 9. The floor foundation structure according to any one of items 8 to 9 .

A plurality of beads (60), (60),... Extending in the longitudinal direction are formed at predetermined intervals in the longitudinal direction on both side surfaces (3c), (3d) of each floor base material (3). The floor foundation structure according to any one of claims 1 to 9 , wherein the floor foundation structure is characterized.