JP4440445B2

JP4440445B2 - Double floor structure

Info

Publication number: JP4440445B2
Application number: JP2000271794A
Authority: JP
Inventors: 昭八清水
Original assignee: Mirai Industry Co Ltd
Current assignee: Mirai Industry Co Ltd
Priority date: 2000-09-07
Filing date: 2000-09-07
Publication date: 2010-03-24
Anticipated expiration: 2020-09-07
Also published as: JP2002081194A; TW513506B

Description

【０００１】
【発明の属する技術分野】
この発明は、建築物内の基礎床上に配設される複数本の根太材と、それら根太材上に架設支持される床パネルとにより形成される二重床構造に関するものである。
【０００２】
【従来の技術】
従来よりコンピュータルーム等においては、各コンピュータに接続された多数の配線や各コンピュータに対する電源を確保するためのケーブルが床下に収納配線されている。そして、床面には前記ケーブルに接続されたコンセントが設置され、そのコンセントに各コンピュータのプラグが接続されて電源が供給されるようになっている。ケーブルを床下に収納配線するための床構造としては、基礎床と、その基礎床面上に配設された複数本の根太材上に架設される床パネルとよりなる二重床構造が知られている。そして、基礎床と床パネルとの間に形成される配設空間に前記配線、ケーブル又は配管材を配設可能になっている。
【０００３】
前記二重床構造としては特許第２８１９３９０号に開示される構成のものが知られている。この二重床構造において使用される根太材は、複数の支持脚と、それら支持脚に支持される長尺状をなす支持部とよりなり、支持部の長さ方向に延びる両側縁部には上方に突出する突条が形成されている。一方、床パネルには下面に前記突条が嵌合可能な係合部が形成されている。
【０００４】
そして、基礎床面上に複数の根太材を所定間隔をおいて互いに平行をなすように配設し、一つの根太材の突条に床パネルの一方の係合部を係合し、隣接する根太材の突条に他方の係合部を係合して根太材上に床パネルを架設支持する。続けて複数の床パネルを根太材上に架設支持させることにより、根太材により基礎床面より所定高さ上方位置に複数の床パネルが配設され、それら床パネルと基礎床との間に配設空間が形成されるようになっている。
【０００５】
【発明が解決しようとする課題】
ところが、上記従来の二重床構造によれば、床パネルは根太材又は基礎床に対して固定されていない。そのため、例えば地震、その他の振動等により床パネルが根太材から浮き上がってしまい、床パネルのがたつきやそれに伴う騒音の発生という問題があった。また、前記コンセントに差し込まれたプラグを抜くためにそのプラグを上方へ引っ張ったとき、床パネルが浮き上がってしまうとともに、コンセントに接続されたケーブル等が損傷を受けるおそれがあるという問題があった。
【０００６】
この発明は、このような従来技術に存在する問題点に着目してなされたものである。その目的とするところは、床パネルの上方への浮き上がりを防止して配設することができる二重床構造を提供することにある。
【０００７】
【課題を解決するための手段】
上記の目的を達成するために、請求項１に記載の発明の二重床構造は、建築物内の基礎床上に間隔をおいて平行に配設された複数本の根太材間に床パネルを架設した状態で支持させて、前記基礎床と床パネルとの間に配線又は配管材を配設可能とする配設空間を形成する二重床構造であって、前記床パネルは複数本の根太材上に配設される第１架設位置と、同第１架設位置から前記根太材の長さ方向に対して直交する方向へ移動されて根太材上に架設支持される第２架設位置とを水平移動可能に形成されるとともに、前記第２架設位置における上方への浮き上がりを防止すべく当該根太材の側部に形成された被係合部に係合可能な係合部を備え、前記第２架設位置にある床パネルの第１架設位置への移動を防止すべく当該床パネルを根太材に位置決めする位置決め部材を備えたものである。
【０００８】
請求項２に記載の発明の二重床構造は、請求項１に記載の発明において、前記位置決め部材は第２架設位置にある床パネルの上方から同床パネル及び根太材に当接するように設けられるものである。
【０００９】
請求項３に記載の発明の二重床構造は、請求項２に記載の発明において、前記位置決め部材は第２架設位置にある床パネルと、根太材との間に形成される隙間に配設されるものである。
【００１０】
請求項４に記載の発明の二重床構造は、請求項３に記載の発明において、前記隙間は、根太材の前記被係合部とは異なる側部と、床パネルとの間に形成されるものである。
【００１１】
請求項５に記載の発明の二重床構造は、請求項３又は請求項４に記載の発明において、前記床パネルには前記位置決め部材を挿通可能とする挿通孔が形成され、床パネルが第２架設位置にある状態において前記挿通孔から前記隙間に位置決め部材が挿通可能に形成されているものである。
【００１２】
請求項６に記載の発明の二重床構造は、請求項５に記載の発明において、前記床パネルは板材を相対向するように折り曲げて溝が形成されているとともに、その溝に前記挿通孔が形成されているものである。
【００１３】
請求項７に記載の発明の二重床構造は、請求項１〜請求項６のいずれか一項に記載の発明において、前記位置決め部材を床パネルから抜脱して床パネルの根太材に対する位置決めを解除した状態において、根太材の長さ方向に直交する方向へ延びて隣接する床パネル同士は互いに干渉することなく第２架設位置から第１架設位置まで移動して床パネルを根太材上から取り外し可能とするために、前記第２架設位置で隣接する床パネル同士の間には間隙が形成されているものである。
【００１４】
請求項８に記載の発明の二重床構造は、請求項７に記載の発明において、前記間隙の間隔は床パネル上に配設される仕上材が、沈み込んで同仕上材上の歩行の妨げとならない大きさに形成されているものである。
【００１５】
請求項９に記載の発明の二重床構造は、請求項１〜請求項８のいずれか一項に記載の発明において、前記被係合部は根太材の長さ方向に沿って延びる側部に突設された支持突部により形成され、前記係合部は床パネルの第１架設位置から第２架設位置への移動により、前記支持突部の下面に当接して第２架設位置にある床パネルの上方への浮き上がりを防止するように形成されているものである。
【００１６】
請求項１０に記載の発明の二重床構造は、請求項１〜請求項９のいずれか一項に記載の発明において、前記床パネルは少なくとも３つの根太材上に架設支持されているものである。
【００１７】
【発明の実施の形態】
以下、この発明をビル内の二重床構造に具体化した一実施形態を、図面に基づいて詳細に説明する。
【００１８】
図１に示すように、二重床構造は建築物としてのビル内の基礎床１１面上に間隔をおいて平行に配設された複数本の長尺状の根太材１２と、各根太材１２上に架設支持される複数の第１及び第２床パネル１３ａ，１３ｂとよりなるものである。そして、前記基礎床１１と第１及び第２床パネル１３ａ，１３ｂとの間に配線又は配管材を配設可能とする配設空間が形成されている。
【００１９】
まず、前記根太材１２について説明すると、図２に示すように、根太材１２は４つの金属材料製の支持脚１４と、各支持脚１４に支持される合成樹脂材料製の支持体１５と、各支持体１５の両側に取付支持される一対の金属材料製のＣ型鋼１６とより構成されている。図３に示すように、前記各支持脚１４はそれぞれ平面四角形状をなす接地板１４ａを備え、各接地板１４ａ上にはそれぞれボルト体１４ｂが立設されている。各ボルト体１４ｂにはそれぞれナット体１４ｃが螺合されているとともに、各ナット体１４ｃの上面にはそれぞれワッシャ１４ｄが支持され、それらワッシャ１４ｄを介してナット体１４ｃ上に前記支持体１５が支持されるようになっている。
【００２０】
ここで前記支持体１５について説明すると、各支持体１５はそれぞれ略直方体状をなし、その両長辺側の外面下部には支持体１５の長さ方向に沿って外方へ突出する支持片１５ａが形成されている。各支持体１５の中央部には支持体１５の上下方向へ貫通する貫通孔１５ｂが形成されている。また、各支持体１５の長さ方向の一端側には、それぞれ前記貫通孔１５ｂから支持体１５を上下方向に貫通する状態で前記一端側へ延びるスリット１５ｃが形成され、そのスリット１５ｃの幅が縮まった分だけ貫通孔１５ｂの内径を縮めることができるようになっている。各支持体１５には、同支持体１５の横方向に貫通する取付孔１５ｄが２箇所に形成され、一方の取付孔１５ｄは前記スリット１５ｃを貫通している。また、図３に破線で示すように、支持体１５の一側面において、一方の取付孔１５ｄに対応する位置にはナット１５ｆが埋設されている。
【００２１】
図２に示すように、各支持体１５の両支持片１５ａ上にはそれぞれＣ型鋼１６が支持されているとともに、一方のＣ型鋼１６から各取付孔１５ｄに対してビス１５ｅがそれぞれ挿通され、両ビス１５ｅは支持体１５及び他方のＣ型鋼１６を貫通している。一方のビス１５ｅは支持体１５に埋設されたナット１５ｆ螺合され、他方のビス１５ｅには、他方のＣ型鋼１６の外面からナット１５ｆが螺合されている。そして、その他方のビス１５ｅとナット１５ｆとによりＣ型鋼１６が挟持されるとともに、支持体１５の両側に取付支持されている。
【００２２】
従って、図２に示すように、根太材１２は４つの支持体１５の貫通孔１５ｂ内にボルト体１４ｂが嵌入されて、支持体１５に支持脚１４が取り付けられている。図５に示すように、各支持脚１４のナット体１４ｃ上にはワッシャ１４ｄを介して支持体１５が支持されて両Ｃ型鋼１６が支持脚１４に支持されている。前記一方のビス１５ｅのナット１５ｆに対する螺合量が少なく各貫通孔１５ｂが縮径されていない状態（非縮径状態）において、貫通孔１５ｂ内をボルト体１４ｂを上下にスライド移動させることができ、Ｃ型鋼１６の支持脚１４に対する位置を調節することができるようになっている。
【００２３】
一方、貫通孔１５ｂの前記非縮径状態において、一方のナット１５ｆに対してビス１５ｅを螺進させることによりスリット１５ｃ、即ち貫通孔１５ｂをスリット１５ｃの幅分だけ縮径させて貫通孔１５ｂの内周面によりボルト体１４ｂの上部外周面を挟持して支持体１５、即ち両Ｃ型鋼１６をボルト体１４ｂの所定位置に位置決めできるようになっている。図２に示すように、根太材１２の両側面において、両Ｃ型鋼１６の長さ方向に沿って連続して延びる上下両縁部により、それぞれ根太材１２の側方へ突出する被係合部としての支持突部１７が形成され、上面には消音パッキン１８が接合されている。
【００２４】
次いで、各床パネル１３ａ，１３ｂについて説明すると、図１に示すように、各種床パネル１３ａ，１３ｂはその長さ方向への長さに依存して第１床パネル１３ａと第２床パネル１３ｂの２種類に設定されている。図４（ａ）、（ｂ）に示すように、第１及び第２床パネル１３ａ，１３ｂ（図４では第１床パネル１３ａのみ図示）は長方形状をなす金属板の長辺側の両側縁を長さ方向に沿って折り曲げ、さらに、長さ方向へ延びる中心線に沿った部分を互いに相対向して凹溝１９ａを形成するように折り曲げて、各折り曲げ部分に折り曲げ片１９を形成して構成されている。そして、各折り曲げ片１９により第１及び第２床パネル１３ａ，１３ｂに所要の剛性を付与している。
【００２５】
図４（ｂ）に示すように、第１床パネル１３ａの各折り曲げ片１９の互いに相対向する一端縁｛図４（ｂ）では左端縁｝及びその一端縁から長さ方向に沿って所定間隔をおいた３箇所には、それぞれ第１床パネル１３ａの一端側へ突出する係合部としての係合片２０が切り欠き形成されている。各折り曲げ片１９の中央３箇所の各係合片２０の先端縁と相対向する折り曲げ片１９との間には根太材１２上面が通過可能な切り欠き溝１９ｃが形成されている。また、各係合片２０と第１床パネル１３ａの裏面との間には、それぞれ前記支持突部１７が係合可能な係合溝２１が形成されている。第２床パネル１３ｂの各折り曲げ片１９の互いに相対向する一端縁及び中央部にはそれぞれ前記係合片２０及び係合溝２１が形成され、中央部には切り欠き溝１９ｃが形成されている。
【００２６】
第１及び第２床パネル１３ａ，１３ｂの他端部にはそれぞれ係止片１９ｄが形成され、根太材１２の上面に係止可能になっている。図４（ａ）に示すように、第１及び第２床パネル１３ａ，１３ｂの各凹溝１９ａに係合片２０及び切り欠き溝１９ｃが切り欠き形成されることにより、第１床パネル１３ａの凹溝１９ａに沿った中央３箇所にはそれぞれ位置決め部材が挿通可能な挿通孔１９ｂが形成され、第２床パネル１３ｂの凹溝１９ａの中央１箇所には挿通孔１９ｂが形成されている。
【００２７】
そして、図１に示すように、複数本の根太材１２を一定間隔をおいて互いに平行をなすように基礎床１１上に配設し、各床パネル１３ａ，１３ｂの各切り欠き溝１９ｃを根太材１２上面を通過させて根太材１２の上面に各床パネル１３ａ，１３ｂの裏面及び係止片１９ｄを支持させる。その支持状態において、第１又は第２床パネル１３ａ，１３ｂはその長さ方向が各根太材１２の長さ方向に対して直交するように根太材１２上に配設され、第１床パネル１３ａと第２床パネル１３ｂとはそれぞれ長さ方向に沿って隣接する状態で配設されるようになっている。
【００２８】
その配設状態において、根太材１２間に第１又は第２床パネル１３ａ，１３ｂが架設されるとともに、根太材１２の上面に各床パネル１３ａ，１３ｂが支持されて第１架設位置に配置されるようになっている。なお、第１架設位置にある第１床パネル１３ａと第２床パネル１３ｂの相対向する端部間には５ｍｍの間隙２５が形成され、両床パネル１３ａ，１３ｂが互いに干渉しないようになっている。
【００２９】
さらに、図７に２点鎖線に示す第１架設位置から第１又は第２床パネル１３ａ，１３ｂを根太材１２の長さ方向に対して直交する方向、即ち各床パネル１３ａ，１３ｂの一端側方向へ各根太材１２上を水平移動させることができるようになっている。すると、図７に実線で示すように、根太材１２の一側面側の支持突部１７に各係合溝２１が係合するとともに、支持突部１７の下面が係合片２０の上面に係合して第１又は第２床パネル１３ａ，１３ｂが前記第１架設位置とは別位置の第２架設位置に架設支持されるようになっている。このときも、第１及び第２床パネル１３ａ，１３ｂの相対向する端部間には５ｍｍの間隙２５が形成され、両床パネル１３ａ，１３ｂが互いに干渉しないようになっている。なお、第１床パネル１３ａが第１架設位置にあり、第２床パネル１３ｂが第２架設位置にあるとき、第１床パネル１３ａと第２床パネル１３ｂの相対向する端部間には１ｃｍの間隙２５が形成されている。
【００３０】
第２架設位置にある第１又は第２床パネル１３ａ，１３ｂの各挿通孔１９ｂからは、根太材１２の一側面側の支持突部１７とは異なる側部、即ち他側面側のＣ型鋼１６と各切り欠き溝１９ｃ内側縁との間に形成される隙間２３に位置決め部材としてのくさび２２が配設されるようになっている。そして、前記くさび２２は隙間２３内において、他側面側のＣ型鋼１６と各切り欠き溝１９ｃ内側縁とに当接するようになっている。
【００３１】
図１及び図７に示すように、前記くさび２２は金属材料又は合成樹脂材料により厚みが前記凹溝１９ａの間隔とほぼ同じに形成されている。くさび２２の下端部には前記隙間２３に嵌合可能な嵌合片２２ａが突設され、その嵌合片２２ａの一側面上部には凹溝１９ａの内底面に係止可能な係止凸部２２ｂが形成されている。さらに、係止凸部２２ｂの一側面上部には係止凸部２２ｂより外方へ突設する突片２２ｃが形成され、くさび２２の他側面は直線状に形成されている。
【００３２】
次いで、二重床構造の施工方法について以下に記載する。
さて、図１に示すように、ビルの基礎床１１面上に複数本の根太材１２を接合し、図示しない水平器等を使用してＣ型鋼１６上面が水平をなすようＣ型鋼１６の高さを調節し所定位置に位置決めする。
【００３３】
続いて、図１及び図６に示すように、基礎床１１上に配置された根太材１２に第１床パネル１３ａを第１架設位置に配置し、続いて、第１床パネル１３ａの長さ方向に沿って第２床パネル１３ｂを配置し、第１架設位置に配置する。このとき、第１床パネル１３ａと第２床パネル１３ｂとの間には間隙２５が形成され、両床パネル１３ａ，１３ｂが互いに干渉しない。
【００３４】
次に、図１及び図７に２点鎖線で示すように、第１架設位置にある第１及び第２床パネル１３ａ，１３ｂをそれぞれ基礎床１１の他端（図１では左端）側方向へ根太材１２上を水平移動させる。すると、図７に実線で示すように、第１及び第２床パネル１３ａ，１３ｂがそれぞれ第２架設位置に配置される。このとき、１本の根太材１２の支持突部１７に対して両床パネル１３ａ，１３ｂの幅方向に沿って３箇所で係合し、それと同時に、第１床パネル１３ａの３箇所の挿通孔１９ｂに隙間２３が形成され、第２床パネル１３ｂの中央１箇所の挿通孔１９ｂに隙間２３が形成される。このときも、第１床パネル１３ａと第２床パネル１３ｂとの間には間隙２５が形成され、両床パネル１３ａ，１３ｂが互いに干渉しない。
【００３５】
次いで、図８に示すように、各床パネル１３ａ，１３ｂの上方からくさび２２を前記挿通孔１９ｂを通過させて隙間２３に嵌合片２２ａを嵌合するとともに、係止凸部２２ｂの下面を凹溝１９ａの内底面上に当接させてくさび２２を凹溝１９ａ内に収容する。すると、くさび２２の他側面と根太材１２の他側面側のＣ型鋼１６とが当接するとともに、嵌合片２２ａと切り欠き溝１９ｃの内側縁とが当接して根太材１２の切り欠き溝１９ｃ内での横方向への移動が規制される。従って、根太材１２上の第２架設位置に架設支持された第１及び第２床パネル１３ａ，１３ｂが根太材１２に対して上方及び側方へ移動するのが規制されるとともに、根太材１２上でのがたつきが防止される。このとき、図１に示すように、根太材１２の長さ方向に沿って隣接する第１及び第２床パネル１３ａ，１３ｂ同士は、各端面位置がずれるように交互に配置される。従って、基礎床１１面の一端に設置された根太材１２側から第１又は第２床パネル１３ａ，１３ｂの長さ方向に外力が作用したとき、その外力が各床パネル１３ａ，１３ｂに分配して作用して全ての根太材１２に作用する。
【００３６】
最後に、複数枚の第１及び第２床パネル１３ａ，１３ｂを根太材１２上全体に配設し、図８に示すように、それら床パネル１３ａ、１３ｂ上に仕上材２４を配置して基礎床１１と第１及び第２床パネル１３ａ，１３ｂとにより二重床構造が構成される。このとき、図１に示すように、第１床パネル１３ａは等間隔をおいて５本の根太材１２に支持され、第２床パネル１３ｂは等間隔をおいて３本の根太材１２に支持されている。さらに、第１及び第２床パネル１３ａ，１３ｂには長さ方向に沿った３箇所の折り曲げ片１９により所要の剛性が付与されている。従って、第１及び第２床パネル１３ａ，１３ｂ上の人や載置されたものの荷重により各床パネル１３ａ，１３ｂの変形等が防止される。そして、基礎床１１と床パネル１３との間にケーブル等の配線又は鞘管等の配管材が配設可能な配設空間が形成される。このとき、前記間隙２５の間隔は仕上材２４上の歩行の妨げにならない程度（５ｍｍ）に設定されている。
【００３７】
一度形成された二重床の配設空間に配線としてのケーブルを配線する際、まず、凹溝１９ａの上方から各くさび２２の突片２２ｃに指を係止してくさび２２を上方へ引き抜く。そして、各嵌合片２２ａと隙間２３との嵌合状態を解除してくさび２２をそれぞれ隙間２３から抜脱し、第１又は第２床パネル１３ａ，１３ｂの根太材１２に対する固定状態を解除する。次いで、第２架設位置にある第１又は第２床パネル１３ａ，１３ｂを他端側方向へ水平移動させる。すると、前記隙間２３分だけ第１又は第２床パネル１３ａ，１３ｂは他端側へ移動して支持突部１７と各係合片２０との係合状態が解除されるとともに、第１又は第２床パネル１３ａ，１３ｂが第１架設位置に配置される。
【００３８】
このとき、各床パネル１３ａ，１３ｂの長さ方向に沿って隣接する第１床パネル１３ａと第２床パネル１３ｂとの間には１ｃｍの間隙２５が形成される。そして、その間隙２５に指を挿入して第１又は第２床パネル１３ａ，１３ｂを持ち上げることができ、第１又は第２床パネル１３ａ，１３ｂの根太材１２からの取り外しが容易に行われる。続いて、ケーブルを配設空間に配線した後、上記と同様に第１又は第２床パネル１３ａ，１３ｂを根太材１２に固定する。その結果、二重床の床下にケーブルが配線される。
【００３９】
前記の実施形態によって発揮される効果について、以下に記載する。
（１）第２架設位置に配置された第１及び第２床パネル１３ａ，１３ｂの係合片２０と支持突部１７との係合により第１及び第２床パネル１３ａ，１３ｂの上方への移動を規制することができ、くさび２２により第１及び第２床パネル１３ａ，１３ｂの側方への移動を規制することができる。従って、根太材１２上に架設支持された第１及び第２床パネル１３ａ，１３ｂの根太材１２上でのがたつきやそれによる騒音の発生を防止することができる。
【００４０】
（２）各床パネル１３ａ，１３ｂにコンセントが設置され、そのコンセントに差し込まれたプラグを上方へ引っ張ったとき、基礎床１１に固定された根太材１２の支持突部１７の下面に係合片２０の上面が係合する。そのため、プラグ及びコンセントと一緒に各床パネル１３ａ，１３ｂが浮き上がるのを防止することができ、その浮き上がりによりケーブルが損傷を受けたりするおそれをなくすことができる。
【００４１】
（３）くさび２２は、突片２２ｃに指を係止して上方へ引っ張ることにより容易に抜脱することができるため、第１及び第２床パネル１３ａ，１３ｂの根太材１２に対する固定状態を容易に解除することができる。従って、例えばビスにより各床パネル１３ａ，１３ｂが根太材１２に固定され、そのビスを抜き取る作業が必要な従来と異なり、配設空間へのケーブル等の配設作業を容易に行うことができる。
【００４２】
（４）隙間２３に嵌合片２２ａを嵌合することにより第１及び第２床パネル１３ａ，１３ｂを根太材１２上に固定することができる。従って、ビスを第１及び第２床パネル１３ａ，１３ｂから根太材１２にねじ込んで固定する場合と異なり、第１及び第２床パネル１３ａ，１３ｂの根太材１２への固定作業を容易に行うことができる。
【００４３】
（５）第１及び第２床パネル１３ａ，１３ｂの幅方向の相対向する位置には３箇所に係合片２０及び係合溝２１が形成されているため、１本の根太材１２の支持突部１７に対して３箇所で係合する。従って、１本の根太材１２の支持突部１７に対して１箇所で係合している場合と比較して、第１及び第２床パネル１３ａ，１３ｂの移動を確実に規制することができる。
【００４４】
（６）支持突部１７は根太材１２の両側面に長さ方向に沿って連続して延びて形成されている。そのため、支持突部１７が間隔をおいて形成されている場合と異なり、係合片２０さらには係合溝２１を支持突部１７に位置合わせする必要がない。従って、根太材１２に対する各床パネル１３ａ，１３ｂの配設作業を容易に行うことができる。
【００４５】
（７）支持突部１７は根太材１２の長さ方向に沿った両側面に形成されているため、係合片２０を根太材１２のいずれの方向からも支持突部１７に係合させることができる。従って、第１架設位置から第２架設位置への水平移動方向を考慮せずに各床パネル１３ａ，１３ｂを根太材１２上に架設支持させることができ、その架設支持作業を速やかに行うことができる。
【００４６】
（８）根太材１２の長さ方向に沿って隣接する第１床パネル１３ａ又は第２床パネル１３ｂ同士は各端部が同一直線上に位置しないように交互に配置されている。そのため、第１又は第２床パネル１３ａ，１３ｂの長さ方向に外力が作用したとき、その外力を分配して根太材１２が全体的に倒れたりするおそれをなくすことができる。
【００４７】
（９）第１床パネル１３ａは長さ方向に沿って支持突部１７と４箇所で係合し、第２床パネル１３ｂは支持突部１７と２箇所で係合する。そのため、各床パネル１３ａ，１３ｂが支持突部１７と１箇所で係合する場合と異なり、上方への浮き上がりを効果的に防止することができる。
【００４８】
（１０）第２架設位置にある第１又は第２床パネル１３ａ，１３ｂの切り欠き溝１９ｃの内端縁と根太材１２のＣ型鋼１６との間に形成される隙間２３にくさび２２が嵌合される。そのため、隙間２３が形成されず、くさび２２を根太材１２に直接打ち込む場合と異なり、第１及び第２床パネル１３ａ，１３ｂの施工作業の簡易化を図ることができる。
【００４９】
（１１）根太材１２の一側面側において、係合片２０と支持突部１７とが係合し、他側面側において、隙間２３にくさび２２が打ち込まれるため、根太材１２はくさび２２を介して切り欠き溝１９ｃの相対向する内側面に挟持される。そのため、根太材１２の切り欠き溝１９ｃ内での側方への移動を確実に防止することができ、第１及び第２床パネル１３ａ，１３ｂががたつくのを防止することができる。
【００５０】
（１２）第１及び第２床パネル１３ａ，１３ｂにはそれぞれ挿通孔１９ｂが形成されている。そのため、第１及び第２床パネル１３ａ，１３ｂの施工現場において、くさび２２挿通のための孔を形成する手間を省略することができ、二重床の施工作業の簡易化を図ることができる。また、各床パネル１３ａ，１３ｂに挿通孔１９ｂが形成されず、第１及び第２床パネル１３ａ，１３ｂを貫通させて根太材１２にくさび２２を打ち込む場合と異なり二重床の施工作業を容易に行うことができる。
【００５１】
（１３）凹溝１９ａにより第１及び第２床パネル１３ａ，１３ｂにくさび２２を収容可能な深さが形成され、各床パネル１３ａ，１３ｂ上面からくさび２２が突出するのを防止することができる。
【００５２】
（１４）第１又は第２床パネル１３ａ，１３ｂを第１架設位置へ配置したとき、根太材１２の長さ方向に直交する方向に沿って配置された第１及び第２床パネル１３ａ，１３ｂの端部間には１ｃｍの間隙２５が形成されるため、その間隙２５に指を挿入して第１又は第２床パネル１３ａ，１３ｂの根太材１２上への配設及び根太材１２からの取り外し作業を容易に行うことができる。従って、ケーブルの配設空間への配線作業の短時間化を図ることができる。
【００５３】
（１５）同様に、間隙２５の間隔は歩行の妨げとならない程度に設定されているため、第１及び第２床パネル１３ａ，１３ｂ上の歩行を容易に行うことができ、ケーブル等の配線作業を円滑に行うことができる。
【００５４】
（１６）第１床パネル１３ａは等間隔をおいた５本の根太材１２上に架設支持され、第２床パネル１３ｂは３本の根太材１２上に架設支持される。さらに、各床パネル１３ａ，１３ｂには３箇所の折り曲げ片１９により所要の剛性が付与されている。そのため、各床パネル１３ａ，１３ｂ上に重いものが載置されてもその荷重を確実に支持することができ、二重床構造の強度を確保することができる。
【００５５】
なお、本実施形態は、次のように変更して具体化することも可能である。
・実施形態では、根太材１２の両側面に支持突部１７を形成したが、根太材１２のいずれか一側面に支持突部１７を形成してもよい。また、実施形態では根太材１２の長さ方向に沿って支持突部１７を形成したが、支持突部１７を根太材１２の長さ方向に沿った所定又は任意の間隔をおいた位置に形成してもよい。
【００５６】
・実施形態では第１床パネル１３ａに４箇所に係合片２０を形成したが、４箇所未満又は５箇所以上係合片２０を形成し、係合片２０に対応するように根太材１２の配設量を変更してもよい。
【００５７】
・根太材１２の長さ方向に沿って隣接する第１床パネル１３ａ又は第２床パネル１３ｂ同士を各端部が同一直線上に位置するように配置してもよい。
・２本の根太材１２間に架設される長さを有する床パネルを使用してもよく、４本又は６本以上の根太材１２間に架設される長さを有する床パネルを使用してもよい。
【００５８】
・第１又は第２床パネル１３ａ，１３ｂの両側縁のうち少なくともいずれか一方の折り曲げ片１９を省略し、各床パネル１３ａ，１３ｂの幅方向に位置する係合片２０及び係合溝２１を２箇所又は１箇所に形成してもよい。
【００５９】
・第１床パネル１３ａと第２床パネル１３ｂとがそれぞれ長さ方向に沿って隣接し、第１架設位置又は第２架設位置にあるとき、両床パネル１３ａ，１３ｂの端部同士の間隙２５の間隔を５ｍｍ未満又は５ｍｍ以上に設定してもよく、間隙２５を省略してもよい。又は、第１床パネル１３ａ又は第２床パネル１３ｂが第１架設位置にあり、他方が第２架設位置にあるとき、両床パネル１３ａ，１３ｂの端部同士の間隙２５の間隔を１ｍｍ未満又は１ｍｍ以上に設定してもよく、間隙２５を省略してもよい。
【００６０】
・実施形態では、Ｃ型鋼１６の上部側の支持突部１７に係合片２０を係合させたが、各折り曲げ片１９を実施形態より長く下方へ折り曲げ、係合片２０を上下２段に形成し、上下両側の支持突部１７が係合可能に形成してもよい。
【００６１】
・第１又は第２床パネル１３ａ，１３ｂが第２架設位置に配置されたとき、Ｃ型鋼１６の上部側の支持突部１７に係合片２０が係合するとともに、下部側の支持突部１７上面に係合片２０の下端面が当接するよう係合片２０の上下方向への長さ又はＣ型鋼１６の上下の支持突部１７の間隔を調整してもよい。このように構成した場合、第１及び第２床パネル１３ａ，１３ｂの上下移動を規制することができるとともに、各床パネル１３ａ，１３ｂを安定した状態で支持することができる。
【００６２】
・実施形態では根太材１２の長さ方向に対して直交して配設される第１床パネル１３ａ又は第２床パネル１３ｂのいずれか一方を第１架設位置へ水平移動させたが、第一及び第２床パネル１３ａ，１３ｂを第１架設位置へ水平移動させて根太材１２から取り外してもよい。
【００６３】
・第１又は第２床パネル１３ａ，１３ｂにおいて、その長さ方向に延びる中心線に沿った部分以外に凹溝１９ａを１箇所又は２箇所以上形成してもよい。凹溝１９ａを２箇所以上形成した場合、くさび２２を打ち込む箇所を多数にして第１又は第２床パネル１３ａ，１３ｂを根太材１２に強固に固定することができる。
【００６４】
・第１及び第２床パネル１３ａ，１３ｂの凹溝１９ａ以外の部分に挿通孔１９ｂを形成して、係合片２０と支持突部１７との係合部分の反対側以外の位置にくさび２２を打ち込んでもよい。又は凹溝１９ａを省略して、挿通孔１９ｂのみを形成してもよい。
【００６５】
・第１又は第２床パネル１３ａ，１３ｂを第２架設位置に配置したとき、根太材１２の一対のＣ型鋼１６間に形成されている溝に対応するように第１及び第２床パネル１３ａ，１３ｂに透孔を形成し、その透孔から前記溝又はＣ型鋼１６上面にくさび２２を打ち込んで各床パネル１３ａ，１３ｂを根太材１２に固定してもよい。
【００６６】
・第２架設位置にある第１又は第２床パネル１３ａ，１３ｂの他端側に形成された係止片１９ｄの端縁と、その係止片１９ｄを支持している根太材１２のＣ型鋼１６間の溝との間に形成される隙間２３に位置決め部材としての杭又は支持体１５間の長さに対応する板材を打ち込む。そして、Ｃ型鋼１６と第１又は第２床パネル１３ａ，１３ｂの係止片１９ｄの端縁と杭又は板材に当接させて第１又は第２床パネル１３ａ，１３ｂ第１架設位置への移動を規制してもよい。
【００６７】
・図９（ａ）に示すようなくさび２２を使用してもよい。このくさび２２は厚みが前記凹溝１９ａの間隔とほぼ同じに形成されている。くさび２２の下端部には前記嵌合片２２ａが突設され、くさび２２の一側縁には前記係止凸部２２ｂが形成されている。くさび２２の中央部の両側には係止凹所２２ｄが形成されている。また、隙間２３に嵌合片２２ａを嵌合した状態において、図９（ｂ）に示す専用の取り外し工具２６を使用することによりくさび２２を取り外すことができるようになっている。この取り外し工具２６は金属板により形成され、その中央部分に切り込みを入れるとともに、その切り込み部分の基端部を中心に先端側を外方へ折り曲げて弾性片２６ａを形成する。この弾性片２６ａは前記係止凹所２２ｄに係止可能に形成されている。
【００６８】
そして、図１０（ａ）に示すように、隙間２３に嵌合されたくさび２２の一側面と凹溝１９ａとの間に、取り外し工具２６を、前記弾性片２６ａの基端部側から差し込むと、弾性片２６ａは取り外し工具２６側へ弾性変形して取り外し工具２６の差込を許容する。さらに、取り外し工具２６を差し込むと、弾性片２６ａが外方へ弾性変形して係止凹所２２ｄに係止する。図１０（ｂ）に示すように、この係止状態で取り外し工具２６を上方へ引き抜くと、取り外し工具２６とともに、くさび２２が上方へ引き抜かれて隙間２３から取り外すことができる。
【００６９】
従って、取り外し工具２６を使用することにより隙間２３からの取り外し作業を容易に行うことができる。また、くさび２２を専用の取り外し工具２６を使用して取り外すため、一般の工具を使用してくさび２２が取り外せる場合と異なり、誰でもくさび２２を取り外せてしまうといった不具合をなくすことができる。さらに、係止凹所２２ｄの形状を変更することにより、その係止凹所２２ｄに対応した弾性片２６ａを備えた取り外し工具２６を使用した場合のみくさび２２を取り外すことができず、誰でもくさび２２を取り外せてしまうといった不具合をなくすことができる。
【００７０】
・第１床パネル１３ａの中央の３箇所の隙間２３に対してくさび２２を打ち込んだが、中央の隙間２３のうち少なくともいずれか１箇所にくさび２２を打ち込んでもよい。各切り欠き溝１９ｃの両内側縁から係合片２０を形成して、第１又は第２床パネル１３ａ，１３ｂをそれぞれ両端側へ移動可能に形成してもよい。くさび２２を嵌合片２２ａのみを形成した四角板状に形成して、係止凸部２２ｂ及び突片２２ｃを省略してもよい。
【００７１】
・実施形態ではビル内における二重床構造に具体化したが、一戸建て住宅、工場、集合住宅等の二重床構造に具体化してもよい。
さらに、前記実施形態より把握できる技術的思想について以下に記載する。
【００７２】
・前記床パネルには長さ方向に沿って複数箇所に係合部が形成されている請求項１〜請求項１０のいずれか一項に記載の二重床構造。このように構成した場合、床パネルの複数の係合部に対して複数の根太材の被係合部が係合して床パネルの上方への浮き上がりを効果的に防止することができる。
【００７３】
・前記根太材の長さ方向に沿って隣接して配設される床パネル同士はその端面位置がずれるように交互に配置される請求項１〜請求項１０のいずれか一項に記載の二重床構造。このように構成した場合、床パネルの長さ方向に外力が作用したとき、その外力を各床パネルに分配して基礎床上に配設された根太材が全体的に倒れたりするおそれをなくすことができる。
【００７４】
・前記係合部は、１つの根太材の長さ方向に連続して延びる被係合部に対して複数箇所で係合すべく複数箇所に形成されている請求項１〜請求項１０のいずれか一項に記載の二重床構造。このように構成した場合、１つの根太材の被係合部に対して係合部が１箇所で係合している場合と比較して、床パネルの根太材上での移動を確実に規制することができる。
【００７５】
・前記被係合部は根太材の長さ方向に沿って連続して延びるとともに、根太材の両側面に形成されている請求項１〜請求項１０のいずれか一項に記載の二重床構造。このように構成した場合、係合部をいずれの方向からも被係合部に係合させることができる。従って、第１架設位置から第２架設位置への水平移動方向を考慮せずに床パネルを根太材上に架設支持させることができ、その架設支持作業を速やかに行うことができる。
【００７６】
【発明の効果】
以上詳述したように、この発明によれば、次のような効果を奏する。
請求項１に記載の発明の二重床構造によれば、床パネルの上方への浮き上がりを防止して配設することができる。
【００７７】
請求項２に記載の発明の二重床構造によれば、請求項１に記載の発明の効果に加え、位置決め部材による床パネルの位置決め作業を容易に行うことができる。請求項３に記載の発明の二重床構造によれば、請求項２に記載の発明の効果に加え、隙間が形成されず床パネルから根太材に位置決め部材を直接打ち込む場合と異なり、床パネルの位置決め作業の簡易化を図ることができる。
【００７８】
請求項４に記載の発明の二重床構造によれば、請求項３に記載の発明の効果に加え、床パネルの第２架設位置から第１架設位置への移動を効果的に防止することができる。
【００７９】
請求項５に記載の発明の二重床構造によれば、請求項３又は請求項４に記載の発明の効果に加え、床パネルに位置決め部材を直接打ち込む場合と異なり、床パネルの位置決め作業の簡易化を図ることができる。
【００８０】
請求項６に記載の発明の二重床構造によれば、請求項５に記載の発明の効果に加え、溝に位置決め部材を収容することができ、床パネル上面から位置決め部材が突出するのを防止することができる。
【００８１】
請求項７に記載の発明の二重床構造によれば、請求項１〜請求項６のいずれか一項に記載の発明の効果に加えて、間隙に指を挿入することができ、床パネルの根太材に対する配置作業及び取外作業を容易に行うことができるとともに、配線又は配管材の配設空間への配線作業の短時間化を図ることができる。
【００８２】
請求項８に記載の発明の二重床構造によれば、請求項７に記載の発明の効果に加えて、床パネル上の歩行を容易に行うことができ、配線又は配管材の配設空間への配線作業を円滑に行うことができる。
【００８３】
請求項９に記載の発明の二重床構造によれば、請求項１〜請求項８のいずれか一項に記載の発明の効果に加えて、床パネルの上方への移動を効果的に規制することができる。
【００８４】
請求項１０に記載の発明の二重床構造によれば、請求項１〜請求項９のいずれか一項に記載の発明の効果に加えて、２本の根太材間に架設支持される場合と比較して、床パネルを安定して支持することができ、床パネル上に人や重いものが載置されても確実に支持することができる。
【図面の簡単な説明】
【図１】実施形態の二重床構造を示す分解斜視図。
【図２】実施形態の根太材を示す斜視図。
【図３】実施形態の根太材を示す分解斜視図。
【図４】（ａ）は実施形態の第１及び第２床パネルを示す斜視図、（ｂ）は第１床パネルを示す側面図。
【図５】根太材上に第１又は第２床パネルを配置する状態の部分側面図。
【図６】根太材に係止溝を係止させた状態を示す部分側面図。
【図７】第１又は第２床パネルを第２架設位置へ配置した部分側面図。
【図８】くさびを打ち込んだ状態を示す部分破断側面図。
【図９】（ａ）は別例のくさびを示す斜視図、（ｂ）は取り外し工具を示す斜視図。
【図１０】（ａ）は取り外し工具を凹溝内に挿入した状態を示す断面図、（ｂ）は取り外し工具とともに、くさびを引き抜いた状態を示す断面図。
【符号の説明】
１１…基礎床、１２…根太材、１３ａ…第１床パネル、１３ｂ…第２床パネル、１７…被係合部としての支持突部、１９ａ…凹溝、１９ｂ…挿通孔、２０…係合部としての係合片、２２…位置決め部材としてのくさび、２３…隙間、２４…仕上材、２５…間隙。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double floor structure formed by a plurality of joists arranged on a foundation floor in a building and floor panels installed and supported on the joists.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a computer room or the like, a large number of wires connected to each computer and cables for securing a power source for each computer are stored and wired under the floor. An outlet connected to the cable is installed on the floor, and a plug of each computer is connected to the outlet to supply power. As a floor structure for storing and wiring cables under the floor, a double floor structure comprising a foundation floor and a floor panel constructed on a plurality of joists arranged on the foundation floor surface is known. ing. And the said wiring, a cable, or a piping material can be arrange | positioned in the arrangement | positioning space formed between a foundation floor and a floor panel.
[0003]
As the double floor structure, a structure disclosed in Japanese Patent No. 2819390 is known. The joist used in this double floor structure is composed of a plurality of support legs and a long support part supported by these support legs, and on both side edges extending in the length direction of the support part. A protrusion protruding upward is formed. On the other hand, the floor panel is formed with an engaging portion on the lower surface to which the protrusion can be fitted.
[0004]
Then, a plurality of joists are arranged on the foundation floor so as to be parallel to each other at a predetermined interval, and one engaging portion of the floor panel is engaged with and adjacent to the joists of one joist. The floor panel is constructed and supported on the joist member by engaging the other engaging portion with the protrusion of the joist member. Subsequently, by installing and supporting a plurality of floor panels on the joists, the floor panels are provided with a plurality of floor panels at a predetermined height above the foundation floor, and are arranged between these floor panels and the foundation floor. An installation space is formed.
[0005]
[Problems to be solved by the invention]
However, according to the conventional double floor structure, the floor panel is not fixed to the joist or the foundation floor. Therefore, for example, the floor panel is lifted from the joist due to an earthquake, other vibrations, etc., and there is a problem that the floor panel is rattled and noise is generated accordingly. Further, when the plug is pulled upward in order to remove the plug inserted into the outlet, the floor panel is lifted, and there is a problem that the cable connected to the outlet may be damaged.
[0006]
The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a double floor structure that can be disposed while preventing the floor panel from being lifted upward.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the double floor structure of the invention according to claim 1 is characterized in that a floor panel is provided between a plurality of joists arranged in parallel and spaced apart on a foundation floor in a building. A double-floor structure that is supported in an erected state and forms an arrangement space in which wiring or piping material can be arranged between the foundation floor and the floor panel, wherein the floor panel has a plurality of joists A first erection position disposed on the material, and a second erection position that is moved from the first erection position in a direction perpendicular to the length direction of the joist and is supported on the joist. An engaging portion that is formed to be horizontally movable and engageable with an engaged portion formed on a side portion of the joist member to prevent upward lifting at the second erection position; 2 To prevent the floor panel in the installation position from moving to the first installation position, the floor panel is used as a joist Those having a positioning member to fit-decided.
[0008]
A double floor structure according to a second aspect of the present invention is the double floor structure according to the first aspect of the present invention, wherein the positioning member is provided so as to abut against the floor panel and the joist from above the floor panel at the second installation position. It is what
[0009]
The double floor structure according to a third aspect of the present invention is the double-floor structure according to the second aspect, wherein the positioning member is disposed in a gap formed between the floor panel at the second installation position and the joist. It is what is done.
[0010]
A double floor structure according to a fourth aspect of the present invention is the invention according to the third aspect, wherein the gap is formed between a side portion different from the engaged portion of the joists and the floor panel. Is.
[0011]
The double floor structure of the invention according to claim 5 is the invention according to claim 3 or claim 4, wherein the floor panel is formed with an insertion hole through which the positioning member can be inserted. The positioning member is formed so as to be able to be inserted into the gap from the insertion hole in the state of being in the two installation positions.
[0012]
A double floor structure according to a sixth aspect of the present invention is the double-floor structure according to the fifth aspect of the present invention, wherein the floor panel has a groove formed by bending plate members so as to face each other, and the insertion hole is formed in the groove. Is formed.
[0013]
A double floor structure according to a seventh aspect of the invention is the invention according to any one of the first to sixth aspects, wherein the positioning member is removed from the floor panel to position the floor panel with respect to the joist. In the released state, the floor panels extending in the direction perpendicular to the length direction of the joists are moved from the second construction position to the first construction position without interfering with each other, and the floor panels are removed from the joists. In order to make it possible, a gap is formed between floor panels adjacent to each other at the second installation position.
[0014]
The double floor structure according to an eighth aspect of the present invention is the invention according to the seventh aspect, wherein the gap between the gaps of the finishing material disposed on the floor panel is depressed and the walking material on the same finishing material is It is formed in a size that does not interfere.
[0015]
The double floor structure of the invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the engaged part is a side part extending along the length direction of the joist. The engagement portion is in contact with the lower surface of the support projection and is in the second installation position by the movement of the floor panel from the first installation position to the second installation position. It is formed so as to prevent the floor panel from floating upward.
[0016]
The double floor structure of the invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the floor panel is constructed and supported on at least three joists. is there.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a double floor structure in a building will be described in detail with reference to the drawings.
[0018]
As shown in FIG. 1, the double floor structure is composed of a plurality of elongate joists 12 arranged in parallel on the surface of a foundation floor 11 in a building as a building, and each joist. 12 comprises a plurality of first and second floor panels 13a, 13b that are erected and supported on 12. And the arrangement | positioning space which can arrange | position wiring or a piping material between the said foundation floor 11 and the 1st and 2nd floor panels 13a and 13b is formed.
[0019]
First, the joist member 12 will be described. As shown in FIG. 2, the joist member 12 includes four support legs 14 made of a metal material, and a support member 15 made of a synthetic resin material supported by each of the support legs 14. It comprises a pair of metallic C-shaped steels 16 that are attached and supported on both sides of each support 15. As shown in FIG. 3, each of the support legs 14 includes a ground plate 14a having a planar square shape, and a bolt body 14b is erected on each ground plate 14a. A nut body 14c is screwed to each bolt body 14b, and a washer 14d is supported on the top surface of each nut body 14c. The support body 15 is supported on the nut body 14c via the washers 14d. It has come to be.
[0020]
The support 15 will now be described. Each support 15 has a substantially rectangular parallelepiped shape, and support pieces 15a projecting outward along the length direction of the support 15 at the lower portions of the outer surfaces on both long sides. Is formed. A through hole 15 b that penetrates the support 15 in the vertical direction is formed at the center of each support 15. In addition, a slit 15c extending to the one end side in a state of penetrating the support body 15 from the through hole 15b in the vertical direction is formed on one end side in the length direction of each support body 15, and the width of the slit 15c is The inner diameter of the through hole 15b can be reduced by the amount of the reduction. Each support 15 is provided with two attachment holes 15d penetrating in the lateral direction of the support 15, and one attachment hole 15d penetrates the slit 15c. Further, as indicated by a broken line in FIG. 3, a nut 15 f is embedded at a position corresponding to one mounting hole 15 d on one side surface of the support 15.
[0021]
As shown in FIG. 2, C-type steel 16 is supported on both support pieces 15a of each support body 15, and screws 15e are inserted from one C-type steel 16 into each mounting hole 15d. Both screws 15 e penetrate the support 15 and the other C-shaped steel 16. One screw 15e is screwed into a nut 15f embedded in the support 15, and the other screw 15e is screwed into the nut 15f from the outer surface of the other C-shaped steel 16. The C-shaped steel 16 is sandwiched between the other screw 15e and the nut 15f, and is attached and supported on both sides of the support body 15.
[0022]
Therefore, as shown in FIG. 2, in the joist member 12, the bolt body 14 b is fitted into the through holes 15 b of the four support bodies 15, and the support legs 14 are attached to the support body 15. As shown in FIG. 5, a support body 15 is supported on a nut body 14 c of each support leg 14 via a washer 14 d, and both C-shaped steels 16 are supported by the support legs 14. In a state where the screwing amount of the one screw 15e with respect to the nut 15f is small and each through hole 15b is not reduced in diameter (non-reduced diameter state), the bolt body 14b can be slid up and down in the through hole 15b. The position of the C-shaped steel 16 with respect to the support leg 14 can be adjusted.
[0023]
On the other hand, in the non-reduced state of the through hole 15b, the screw 15e is screwed into one nut 15f to reduce the diameter of the slit 15c, that is, the through hole 15b by the width of the slit 15c. The upper outer peripheral surface of the bolt body 14b is sandwiched by the inner peripheral surface so that the support body 15, that is, both C-shaped steels 16 can be positioned at predetermined positions of the bolt body 14b. As shown in FIG. 2, on both side surfaces of the joist member 12, engaged portions projecting to the side of the joist member 12 respectively by upper and lower edges continuously extending along the length direction of both C-shaped steels 16. The support protrusion 17 is formed, and a muffler packing 18 is joined to the upper surface.
[0024]
Next, each floor panel 13a, 13b will be described. As shown in FIG. 1, the various floor panels 13a, 13b depend on the length in the length direction of the first floor panel 13a and the second floor panel 13b. Two types are set. As shown in FIGS. 4A and 4B, the first and second floor panels 13a and 13b (only the first floor panel 13a is shown in FIG. 4) are both side edges on the long side of the rectangular metal plate. Are bent along the length direction, and further, the portions along the center line extending in the length direction are folded so as to form the concave grooves 19a opposite to each other, and a bent piece 19 is formed at each bent portion. It is configured. And the required rigidity is provided to the 1st and 2nd floor panels 13a and 13b by each bending piece 19. FIG.
[0025]
As shown in FIG. 4B, one end edge {the left end edge in FIG. 4B} of each bent piece 19 of the first floor panel 13a and a predetermined distance along the length direction from the one end edge. Engagement pieces 20 serving as engagement portions projecting toward one end side of the first floor panel 13a are cut out at three locations where the first floor panel 13a is provided. A notch groove 19c through which the upper surface of the joist member 12 can pass is formed between the front end edge of each engaging piece 20 at the center of each bent piece 19 and the bent piece 19 facing each other. In addition, an engagement groove 21 is formed between each engagement piece 20 and the back surface of the first floor panel 13a so that the support protrusion 17 can be engaged therewith. The engagement piece 20 and the engagement groove 21 are formed at one end edge and the center part of each bent piece 19 of the second floor panel 13b, respectively, and the notch groove 19c is formed at the center part. .
[0026]
Locking pieces 19d are formed at the other ends of the first and second floor panels 13a and 13b, respectively, and can be locked to the upper surface of the joist member 12. As shown in FIG. 4 (a), the engagement piece 20 and the notch groove 19c are notched in each of the concave grooves 19a of the first and second floor panels 13a and 13b. An insertion hole 19b through which the positioning member can be inserted is formed at three central positions along the concave groove 19a, and an insertion hole 19b is formed at one central position of the concave groove 19a of the second floor panel 13b.
[0027]
Then, as shown in FIG. 1, a plurality of joists 12 are arranged on the foundation floor 11 so as to be parallel to each other at regular intervals, and the notches 19c of the respective floor panels 13a, 13b are formed in the joists. The back surface of each floor panel 13a, 13b and the locking piece 19d are supported on the top surface of the joist member 12 through the top surface of the material 12. In the support state, the first or second floor panel 13a, 13b is disposed on the joist member 12 so that the length direction thereof is orthogonal to the length direction of each joist member 12, and the first floor panel 13a. And the second floor panel 13b are arranged adjacent to each other along the length direction.
[0028]
In the arrangement state, the first or second floor panels 13a and 13b are installed between the joists 12, and the floor panels 13a and 13b are supported on the upper surface of the joists 12 and arranged at the first installation position. It has become so. A gap 25 of 5 mm is formed between the opposite ends of the first floor panel 13a and the second floor panel 13b at the first installation position, so that the floor panels 13a and 13b do not interfere with each other. Yes.
[0029]
Further, the first or second floor panel 13a, 13b is orthogonal to the length direction of the joist 12 from the first installation position shown by the two-dot chain line in FIG. 7, that is, one end side of each floor panel 13a, 13b. It is possible to horizontally move the joists 12 in the direction. Then, as indicated by a solid line in FIG. 7, each engagement groove 21 is engaged with the support protrusion 17 on one side of the joist 12 and the lower surface of the support protrusion 17 is engaged with the upper surface of the engagement piece 20. In combination, the first or second floor panel 13a, 13b is installed and supported at a second installation position different from the first installation position. Also at this time, a gap 25 of 5 mm is formed between the opposing ends of the first and second floor panels 13a and 13b so that the floor panels 13a and 13b do not interfere with each other. When the first floor panel 13a is in the first erection position and the second floor panel 13b is in the second erection position, 1 cm is provided between the opposite ends of the first floor panel 13a and the second floor panel 13b. The gap 25 is formed.
[0030]
From each insertion hole 19b of the 1st or 2nd floor panel 13a, 13b in a 2nd installation position, the side part different from the support protrusion 17 of the side face side of the joist 12, ie, the C-shaped steel 16 of the other side face side And a wedge 22 as a positioning member is disposed in a gap 23 formed between the inner edge of each notch groove 19c. The wedge 22 contacts the C-shaped steel 16 on the other side surface and the inner edge of each notch groove 19c in the gap 23.
[0031]
As shown in FIGS. 1 and 7, the wedge 22 is formed of a metal material or a synthetic resin material so that the thickness thereof is substantially the same as the interval between the concave grooves 19a. A fitting piece 22a that can be fitted into the gap 23 projects from the lower end portion of the wedge 22, and a locking convex portion that can be locked to the inner bottom surface of the groove 19a on one side upper portion of the fitting piece 22a. 22b is formed. Further, a protruding piece 22c protruding outward from the locking projection 22b is formed on one side upper part of the locking projection 22b, and the other side of the wedge 22 is formed in a straight line.
[0032]
Then, it describes below about the construction method of a double floor structure.
Now, as shown in FIG. 1, a plurality of joists 12 are joined on the foundation floor 11 surface of the building, and the height of the C-shaped steel 16 is set so that the upper surface of the C-shaped steel 16 is horizontal by using a leveler (not shown). Adjust the height and position it at a predetermined position.
[0033]
Then, as shown in FIG.1 and FIG.6, the 1st floor panel 13a is arrange | positioned in the 1st installation position in the joist 12 arrange | positioned on the foundation floor 11, and then the length of the 1st floor panel 13a is followed. The 2nd floor panel 13b is arrange | positioned along a direction and arrange | positions in a 1st installation position. At this time, a gap 25 is formed between the first floor panel 13a and the second floor panel 13b, and the floor panels 13a and 13b do not interfere with each other.
[0034]
Next, as shown by a two-dot chain line in FIGS. 1 and 7, the first and second floor panels 13 a and 13 b at the first installation position are respectively directed toward the other end (left end in FIG. 1) side of the foundation floor 11. The top of the joist 12 is moved horizontally. Then, as shown by a solid line in FIG. 7, the first and second floor panels 13a and 13b are respectively disposed at the second installation positions. At this time, it engages with the support protrusion 17 of one joist 12 at three places along the width direction of both floor panels 13a, 13b, and at the same time, three insertion holes of the first floor panel 13a. A gap 23 is formed in 19b, and a gap 23 is formed in one insertion hole 19b in the center of the second floor panel 13b. Also at this time, a gap 25 is formed between the first floor panel 13a and the second floor panel 13b, and the floor panels 13a and 13b do not interfere with each other.
[0035]
Next, as shown in FIG. 8, the wedges 22 are passed through the insertion holes 19b from above the floor panels 13a and 13b to fit the fitting pieces 22a into the gaps 23, and the lower surfaces of the locking projections 22b are fitted. The wedge 22 is accommodated in the concave groove 19a in contact with the inner bottom surface of the concave groove 19a. Then, the other side surface of the wedge 22 and the C-shaped steel 16 on the other side surface of the joist 12 are brought into contact with each other, and the fitting piece 22a and the inner edge of the notch groove 19c are brought into contact with each other so that the notched groove 19c of the joist member 12 is obtained. Movement in the lateral direction is restricted. Accordingly, the first and second floor panels 13a and 13b installed and supported at the second installation position on the joist 12 are restricted from moving upward and laterally with respect to the joist 12 and the joist 12 Shaking on the top is prevented. At this time, as shown in FIG. 1, the first and second floor panels 13 a and 13 b adjacent to each other along the length direction of the joist 12 are alternately arranged so that the positions of the end faces are shifted. Accordingly, when an external force is applied in the length direction of the first or second floor panel 13a, 13b from the joist 12 installed on one end of the foundation floor 11, the external force is distributed to the floor panels 13a, 13b. Acting on all the joists 12.
[0036]
Finally, a plurality of first and second floor panels 13a, 13b are arranged on the entire joist 12 and a finishing material 24 is arranged on the floor panels 13a, 13b as shown in FIG. The floor 11 and the first and second floor panels 13a and 13b constitute a double floor structure. At this time, as shown in FIG. 1, the first floor panel 13a is supported by five joists 12 at equal intervals, and the second floor panel 13b is supported by three joists 12 at equal intervals. Has been. Furthermore, required rigidity is provided to the first and second floor panels 13a and 13b by three bent pieces 19 along the length direction. Therefore, deformation of each floor panel 13a, 13b or the like is prevented by a load of a person on the first and second floor panels 13a, 13b or a placed one. And the arrangement | positioning space in which wiring materials, such as a cable, or piping materials, such as a sheath tube, can be arrange | positioned between the foundation floor 11 and the floor panel 13 is formed. At this time, the interval of the gap 25 is set to such an extent that it does not hinder walking on the finishing material 24 (5 mm).
[0037]
When wiring a cable as a wiring in the double floor arrangement space once formed, first, a finger is engaged with the protruding piece 22c of each wedge 22 from above the concave groove 19a, and the wedge 22 is pulled upward. And the fitting state of each fitting piece 22a and the clearance gap 23 is cancelled | released, the wedge 22 is each extracted from the clearance gap 23, and the fixed state with respect to the joist 12 of the 1st or 2nd floor panel 13a, 13b is cancelled | released. Subsequently, the 1st or 2nd floor panel 13a, 13b in a 2nd installation position is horizontally moved to the other end side direction. Then, the first or second floor panel 13a, 13b moves to the other end side by the gap 23, the engagement state between the support protrusion 17 and each engagement piece 20 is released, and the first or second Two floor panels 13a and 13b are arranged at the first installation position.
[0038]
At this time, a 1 cm gap 25 is formed between the first floor panel 13a and the second floor panel 13b adjacent to each other along the length direction of the floor panels 13a and 13b. The first or second floor panel 13a, 13b can be lifted by inserting a finger into the gap 25, and the first or second floor panel 13a, 13b can be easily detached from the joist member 12. Subsequently, after the cables are wired in the arrangement space, the first or second floor panels 13a and 13b are fixed to the joist 12 in the same manner as described above. As a result, the cable is routed under the double floor.
[0039]
The effects exhibited by the above embodiment will be described below.
(1) Upward of the first and second floor panels 13a and 13b due to the engagement of the engagement pieces 20 of the first and second floor panels 13a and 13b arranged at the second installation position with the support protrusions 17. The movement can be restricted, and the wedge 22 can restrict the lateral movement of the first and second floor panels 13a and 13b. Therefore, it is possible to prevent the first and second floor panels 13a and 13b installed and supported on the joist 12 from rattling on the joist 12 and the generation of noise due thereto.
[0040]
(2) When an outlet is installed on each floor panel 13a, 13b and a plug inserted into the outlet is pulled upward, an engagement piece is formed on the lower surface of the support projection 17 of the joist 12 fixed to the foundation floor 11. The top surface of 20 engages. Therefore, it is possible to prevent the floor panels 13a and 13b from being lifted together with the plug and the outlet, and it is possible to eliminate the possibility that the cable is damaged due to the lift.
[0041]
(3) Since the wedge 22 can be easily removed by locking the finger to the protruding piece 22c and pulling upward, the fixed state of the first and second floor panels 13a, 13b with respect to the joist 12 is maintained. It can be released easily. Therefore, for example, unlike the conventional case where the floor panels 13a and 13b are fixed to the joist member 12 with screws and the operation of extracting the screws is required, the operation of arranging cables and the like in the installation space can be easily performed.
[0042]
(4) By fitting the fitting piece 22 a into the gap 23, the first and second floor panels 13 a and 13 b can be fixed on the joist 12. Accordingly, unlike the case where screws are screwed and fixed to the joist member 12 from the first and second floor panels 13a and 13b, the first and second floor panels 13a and 13b can be easily fixed to the joist member 12. Can do.
[0043]
(5) Since the engagement pieces 20 and the engagement grooves 21 are formed at three positions at the positions in the width direction of the first and second floor panels 13a and 13b that are opposed to each other, the single joist 12 is supported. The protrusion 17 is engaged at three positions. Therefore, the movement of the first and second floor panels 13a and 13b can be reliably restricted as compared with the case where the support protrusion 17 of one joist member 12 is engaged at one place. .
[0044]
(6) The support protrusions 17 are formed on both side surfaces of the joist member 12 so as to extend continuously along the length direction. Therefore, unlike the case where the support protrusions 17 are formed at intervals, it is not necessary to align the engagement pieces 20 and the engagement grooves 21 with the support protrusions 17. Therefore, it is possible to easily arrange the floor panels 13a and 13b on the joist member 12.
[0045]
(7) Since the support protrusions 17 are formed on both side surfaces along the length direction of the joist member 12, the engaging piece 20 is engaged with the support protrusion 17 from any direction of the joist member 12. Can do. Therefore, the floor panels 13a and 13b can be installed and supported on the joist member 12 without considering the horizontal movement direction from the first installation position to the second installation position, and the installation support work can be performed quickly. it can.
[0046]
(8) The first floor panels 13a or the second floor panels 13b adjacent to each other along the length direction of the joists 12 are alternately arranged so that the ends are not located on the same straight line. Therefore, when an external force is applied in the length direction of the first or second floor panel 13a, 13b, the external force can be distributed to eliminate the possibility that the joist member 12 will fall overall.
[0047]
(9) The first floor panel 13a is engaged with the support projection 17 at four locations along the length direction, and the second floor panel 13b is engaged with the support projection 17 at two locations. Therefore, unlike the case where each floor panel 13a, 13b is engaged with the support protrusion 17 at one place, it is possible to effectively prevent the floor panel 13a, 13b from being lifted upward.
[0048]
(10) The wedge 22 fits into the gap 23 formed between the inner edge of the notch groove 19c of the first or second floor panel 13a, 13b at the second installation position and the C-shaped steel 16 of the joist member 12. Combined. Therefore, the gap 23 is not formed, and the construction work of the first and second floor panels 13a and 13b can be simplified unlike the case where the wedge 22 is driven directly into the joist 12.
[0049]
(11) Since the engagement piece 20 and the support protrusion 17 are engaged with each other on one side surface of the joist member 12 and the wedge 22 is driven into the gap 23 on the other side surface, the joist member 12 passes through the wedge 22. And is held between the opposed inner surfaces of the notch groove 19c. Therefore, it is possible to reliably prevent the joist member 12 from moving laterally within the notch groove 19c, and to prevent the first and second floor panels 13a and 13b from rattling.
[0050]
(12) An insertion hole 19b is formed in each of the first and second floor panels 13a and 13b. Therefore, in the construction site of the 1st and 2nd floor panels 13a and 13b, the effort which forms the hole for wedge 22 penetration can be omitted, and simplification of the construction work of a double floor can be aimed at. Also, the insertion holes 19b are not formed in the floor panels 13a and 13b, and unlike the case where the wedges 22 are driven into the joists 12 through the first and second floor panels 13a and 13b, the construction work of the double floor is easy. Can be done.
[0051]
(13) The depth which can accommodate the wedge 22 in the first and second floor panels 13a and 13b is formed by the concave groove 19a, and the wedge 22 can be prevented from protruding from the upper surface of each floor panel 13a and 13b. .
[0052]
(14) When the first or second floor panels 13a and 13b are arranged at the first installation position, the first and second floor panels 13a and 13b arranged along the direction orthogonal to the length direction of the joist member 12. Since a 1 cm gap 25 is formed between the end portions of the first and second floors, a finger is inserted into the gap 25 to dispose the first or second floor panel 13a, 13b on the joist 12 and from the joist 12 Removal work can be performed easily. Therefore, it is possible to shorten the wiring work to the cable installation space.
[0053]
(15) Similarly, since the gap 25 is set so as not to interfere with walking, walking on the first and second floor panels 13a and 13b can be easily performed, and wiring work such as cables is performed. Can be performed smoothly.
[0054]
(16) The first floor panel 13a is installed and supported on five joists 12 that are equally spaced, and the second floor panel 13b is installed and supported on the three joists 12. Furthermore, required rigidity is given to each floor panel 13a, 13b by the bending piece 19 of three places. Therefore, even if a heavy object is placed on each floor panel 13a, 13b, the load can be reliably supported, and the strength of the double floor structure can be ensured.
[0055]
In addition, this embodiment can also be changed and embodied as follows.
In the embodiment, the support protrusions 17 are formed on both side surfaces of the joist member 12, but the support protrusions 17 may be formed on any one side surface of the joist member 12. Further, in the embodiment, the support protrusions 17 are formed along the length direction of the joist member 12. However, the support protrusions 17 are formed at predetermined or arbitrary positions along the length direction of the joist member 12. May be.
[0056]
In the embodiment, the engagement pieces 20 are formed at four locations on the first floor panel 13a. The arrangement amount may be changed.
[0057]
-You may arrange | position the 1st floor panel 13a or 2nd floor panel 13b adjacent along the length direction of the joist 12 so that each edge part may be located on the same straight line.
-A floor panel having a length constructed between two joists 12 may be used, or a floor panel having a length constructed between four or six joists 12 may be used. Also good.
[0058]
-The bending piece 19 of at least one of the both side edges of the first or second floor panel 13a, 13b is omitted, and the engagement piece 20 and the engagement groove 21 positioned in the width direction of each floor panel 13a, 13b are provided. You may form in two places or one place.
[0059]
When the first floor panel 13a and the second floor panel 13b are adjacent to each other along the length direction and are at the first installation position or the second installation position, the gap 25 between the end portions of both floor panels 13a and 13b May be set to less than 5 mm or 5 mm or more, and the gap 25 may be omitted. Alternatively, when the first floor panel 13a or the second floor panel 13b is in the first installation position and the other is in the second installation position, the gap 25 between the ends of the floor panels 13a and 13b is less than 1 mm or It may be set to 1 mm or more, and the gap 25 may be omitted.
[0060]
In the embodiment, the engagement pieces 20 are engaged with the support protrusions 17 on the upper side of the C-shaped steel 16, but the bent pieces 19 are bent downward longer than in the embodiment, and the engagement pieces 20 are arranged in two upper and lower stages. It may be formed so that the upper and lower support protrusions 17 can be engaged.
[0061]
When the first or second floor panel 13a, 13b is disposed at the second installation position, the engagement piece 20 is engaged with the upper support protrusion 17 of the C-shaped steel 16, and the lower support protrusion. 17 The length in the vertical direction of the engagement piece 20 or the interval between the upper and lower support protrusions 17 of the C-shaped steel 16 may be adjusted so that the lower end surface of the engagement piece 20 contacts the upper surface. When comprised in this way, while being able to control the up-and-down movement of the 1st and 2nd floor panels 13a and 13b, each floor panel 13a and 13b can be supported in the stable state.
[0062]
In the embodiment, either one of the first floor panel 13a and the second floor panel 13b arranged orthogonal to the length direction of the joist 12 is horizontally moved to the first installation position. Alternatively, the second floor panels 13a and 13b may be removed from the joist 12 by horizontally moving to the first installation position.
[0063]
-In the 1st or 2nd floor panel 13a, 13b, you may form the ditch | groove 19a in 1 place or 2 places or more other than the part along the centerline extended in the length direction. When two or more concave grooves 19a are formed, the first or second floor panels 13a and 13b can be firmly fixed to the joist member 12 by increasing the number of places where the wedges 22 are driven.
[0064]
An insertion hole 19b is formed in a portion other than the concave groove 19a of the first and second floor panels 13a and 13b, and the wedge 22 is located at a position other than the opposite side of the engagement portion between the engagement piece 20 and the support protrusion 17. You may type in. Alternatively, the concave groove 19a may be omitted and only the insertion hole 19b may be formed.
[0065]
-When the 1st or 2nd floor panel 13a, 13b is arrange | positioned in the 2nd installation position, the 1st and 2nd floor panel 13a so that it may respond | correspond to the groove | channel formed between a pair of C-shaped steel 16 of the joist material 12 , 13 b may be formed, and the wedges 22 may be driven into the grooves or the upper surface of the C-shaped steel 16 from the through holes to fix the floor panels 13 a, 13 b to the joists 12.
[0066]
-C type steel of the joist 12 which supports the edge of the locking piece 19d formed in the other end side of the 1st or 2nd floor panel 13a, 13b in a 2nd installation position, and the locking piece 19d A pile as a positioning member or a plate material corresponding to the length between the support bodies 15 is driven into a gap 23 formed between the grooves 16. Then, the C-shaped steel 16 and the edge of the locking piece 19d of the first or second floor panel 13a, 13b are brought into contact with the pile or plate material and moved to the first installation position of the first or second floor panel 13a, 13b. May be regulated.
[0067]
-You may use the wedge 22 as shown to Fig.9 (a). The wedges 22 are formed to have substantially the same thickness as the interval between the concave grooves 19a. The fitting piece 22 a protrudes from the lower end portion of the wedge 22, and the locking convex portion 22 b is formed at one side edge of the wedge 22. Locking recesses 22 d are formed on both sides of the central portion of the wedge 22. Further, in a state where the fitting piece 22a is fitted in the gap 23, the wedge 22 can be removed by using a dedicated removal tool 26 shown in FIG. 9B. The removal tool 26 is formed of a metal plate, and a cut is made in the central portion thereof, and the distal end side is bent outwardly around the base end portion of the cut portion to form an elastic piece 26a. The elastic piece 26a is formed so as to be locked in the locking recess 22d.
[0068]
Then, as shown in FIG. 10 (a), when the removal tool 26 is inserted between the one side surface of the wedge 22 fitted in the gap 23 and the concave groove 19a from the base end side of the elastic piece 26a. The elastic piece 26a is elastically deformed toward the removal tool 26 and allows the removal tool 26 to be inserted. Furthermore, when the removal tool 26 is inserted, the elastic piece 26a is elastically deformed outward and is locked in the locking recess 22d. As shown in FIG. 10B, when the removal tool 26 is pulled upward in this locked state, the wedge 22 is pulled upward together with the removal tool 26 and can be removed from the gap 23.
[0069]
Therefore, the removal work from the gap 23 can be easily performed by using the removal tool 26. Moreover, since the wedge 22 is removed using the dedicated removal tool 26, unlike the case where the wedge 22 can be removed by using a general tool, it is possible to eliminate the problem that anyone can remove the wedge 22. Furthermore, by changing the shape of the locking recess 22d, the wedge 22 cannot be removed only when the removal tool 26 provided with the elastic piece 26a corresponding to the locking recess 22d is used. The trouble of removing 22 can be eliminated.
[0070]
Although the wedge 22 is driven into the three gaps 23 at the center of the first floor panel 13a, the wedge 22 may be driven into at least one of the central gaps 23. The engagement piece 20 may be formed from both inner edges of each notch groove 19c, and the first or second floor panels 13a and 13b may be formed to be movable to both ends. The wedge 22 may be formed in a square plate shape having only the fitting piece 22a, and the locking projection 22b and the protruding piece 22c may be omitted.
[0071]
In the embodiment, the embodiment is embodied in a double floor structure in a building, but may be embodied in a double floor structure such as a detached house, a factory, an apartment house, or the like.
Further, the technical idea that can be grasped from the embodiment will be described below.
[0072]
The double floor structure according to any one of claims 1 to 10, wherein an engagement portion is formed at a plurality of locations along the length direction of the floor panel. When comprised in this way, the to-be-engaged part of a plurality of joist members can engage with a plurality of engaging parts of a floor panel, and it can prevent effectively the uplift of a floor panel.
[0073]
The floor panels arranged adjacent to each other along the length direction of the joists are alternately arranged so that the end face positions thereof are shifted from each other. Heavy floor structure. When configured in this way, when an external force acts in the length direction of the floor panel, the external force is distributed to each floor panel to eliminate the possibility that the joists placed on the foundation floor will fall down overall. Can do.
[0074]
The engagement portion is formed at a plurality of locations so as to be engaged at a plurality of locations with an engaged portion extending continuously in the length direction of one joist. A double floor structure according to claim 1. When configured in this manner, the movement of the floor panel on the joist member is reliably restricted as compared with the case where the engaging portion is engaged at one place with the engaged member of one joist member. can do.
[0075]
The double floor according to any one of claims 1 to 10, wherein the engaged portion extends continuously along the length direction of the joists and is formed on both side surfaces of the joists. Construction. When comprised in this way, an engaging part can be engaged with an to-be-engaged part from any direction. Therefore, the floor panel can be erected and supported on the joists without considering the horizontal movement direction from the first erection position to the second erection position, and the erection support operation can be performed quickly.
[0076]
【The invention's effect】
As described in detail above, the present invention has the following effects.
According to the double floor structure of the first aspect of the present invention, it is possible to prevent the floor panel from being lifted upward.
[0077]
According to the double floor structure of the invention described in claim 2, in addition to the effect of the invention described in claim 1, the positioning operation of the floor panel by the positioning member can be easily performed. According to the double floor structure of the invention described in claim 3, in addition to the effect of the invention described in claim 2, unlike the case where the positioning member is directly driven from the floor panel to the joist without a gap being formed, the floor panel The positioning work can be simplified.
[0078]
According to the double floor structure of the invention described in claim 4, in addition to the effect of the invention of claim 3, it is possible to effectively prevent the movement of the floor panel from the second installation position to the first installation position. Can do.
[0079]
According to the double floor structure of the invention described in claim 5, in addition to the effects of the invention described in claim 3 or claim 4, unlike the case where the positioning member is directly driven into the floor panel, the floor floor positioning work is performed. Simplification can be achieved.
[0080]
According to the double floor structure of the invention described in claim 6, in addition to the effect of the invention described in claim 5, the positioning member can be accommodated in the groove, and the positioning member protrudes from the upper surface of the floor panel. Can be prevented.
[0081]
According to the double floor structure of the invention described in claim 7, in addition to the effect of the invention described in any one of claims 1 to 6, a finger can be inserted into the gap, and the floor panel It is possible to easily perform the placement work and the removal work on the joist material and shorten the wiring work to the wiring or piping material installation space.
[0082]
According to the double floor structure of the invention described in claim 8, in addition to the effect of the invention described in claim 7, it is possible to easily walk on the floor panel, and to arrange the wiring or piping material. Wiring work can be performed smoothly.
[0083]
According to the double floor structure of the invention according to claim 9, in addition to the effect of the invention according to any one of claims 1 to 8, the upward movement of the floor panel is effectively regulated. can do.
[0084]
According to the double floor structure of the invention of claim 10, in addition to the effect of the invention of any one of claims 1 to 9, in the case of being erected and supported between two joists As compared with the above, the floor panel can be stably supported, and even if a person or a heavy object is placed on the floor panel, the floor panel can be reliably supported.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a double floor structure of an embodiment.
FIG. 2 is a perspective view showing a joist material according to an embodiment.
FIG. 3 is an exploded perspective view showing the joist of the embodiment.
FIG. 4A is a perspective view showing first and second floor panels of the embodiment, and FIG. 4B is a side view showing the first floor panel.
FIG. 5 is a partial side view showing a state in which the first or second floor panel is arranged on the joist.
FIG. 6 is a partial side view showing a state in which a locking groove is locked to a joist.
FIG. 7 is a partial side view in which the first or second floor panel is disposed at the second installation position.
FIG. 8 is a partially broken side view showing a state where a wedge is driven.
9A is a perspective view showing another example of a wedge, and FIG. 9B is a perspective view showing a removal tool.
10A is a cross-sectional view showing a state in which a removal tool is inserted into a concave groove, and FIG. 10B is a cross-sectional view showing a state in which the wedge is pulled out together with the removal tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Base floor, 12 ... joist, 13a ... 1st floor panel, 13b ... 2nd floor panel, 17 ... Supporting protrusion as an engaged part, 19a ... Groove, 19b ... Insertion hole, 20 ... Engagement Engagement piece as part, 22 ... Wedge as positioning member, 23 ... Gap, 24 ... Finishing material, 25 ... Gap.

Claims

A floor panel is installed between a plurality of joists arranged in parallel on the foundation floor in the building at intervals, and wiring or piping material is provided between the foundation floor and the floor panel. A double floor structure that forms a disposition space that can be disposed, wherein the floor panel is disposed on a plurality of joists and a first erection position of the joists from the first erection position. To move horizontally in a direction perpendicular to the length direction and to be horizontally supported on a second erection position that is erected and supported on the joists, and to prevent upward lifting at the second erection position An engagement portion that can be engaged with an engaged portion formed on a side portion of the joist,
A double floor structure comprising a positioning member for positioning the floor panel on the joist to prevent the floor panel at the second installation position from moving to the first installation position.

2. The double floor structure according to claim 1, wherein the positioning member is provided so as to contact the floor panel and the joist from above the floor panel at the second installation position.

The double floor structure according to claim 2, wherein the positioning member is disposed in a gap formed between the floor panel at the second installation position and the joist.

The double floor structure according to claim 3, wherein the gap is formed between a side panel different from the engaged part of the joist and a floor panel.

The insertion hole through which the positioning member can be inserted is formed in the floor panel, and the positioning member can be inserted into the gap from the insertion hole in a state where the floor panel is at the second installation position. Or the double floor structure of Claim 4.

The double floor structure according to claim 5, wherein the floor panel has a groove formed by bending plate members so as to face each other, and the insertion hole is formed in the groove.

In a state in which the positioning member is removed from the floor panel and the positioning of the floor panel with respect to the joist is released, the second floor construction extends in a direction perpendicular to the length direction of the joist and does not interfere with each other. A gap is formed between floor panels adjacent to each other at the second installation position so that the floor panel can be removed from the joist bar by moving from the position to the first installation position. Item 7. The double floor structure according to any one of items 6.

The double floor structure according to claim 7, wherein the gap is formed in a size such that a finishing material disposed on a floor panel sinks and does not hinder walking on the finishing material.

The engaged portion is formed by a support protrusion protruding from a side portion extending along the length direction of the joist, and the engaging portion moves from the first erection position of the floor panel to the second erection position. 9. The structure according to claim 1, wherein the floor panel is in contact with the lower surface of the support protrusion to prevent the floor panel located at the second installation position from being lifted upward. Heavy floor structure.

The double floor structure according to any one of claims 1 to 9, wherein the floor panel is installed and supported on at least three joists.