JP4043792B2

JP4043792B2 - Free access floor

Info

Publication number: JP4043792B2
Application number: JP2002021886A
Authority: JP
Inventors: 淳彦小林; 拓也石橋
Original assignee: Senqcia Corp
Current assignee: Senqcia Corp
Priority date: 2002-01-30
Filing date: 2002-01-30
Publication date: 2008-02-06
Anticipated expiration: 2022-01-30
Also published as: JP2003221921A

Description

【０００１】
【発明の属する技術分野】
本発明は、フロアパネルを支持脚に固定するフリーアクセスフロアに関するものである。
【０００２】
【従来の技術】
床面に設置した支持脚にフロアパネルの４隅を固定してフリーアクセスフロアを構成しているが、このフロアパネルの固定方法として通常のボルトなどを使用すると固定に時間を要するので、簡易にワンタッチで固定することが望ましい。そのために、特公平５−４６４１８、特開平７−２３３６１８など多くの発明が開示されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、前記特公平５−４６４１８の固定装置は回転による締代が小さいためにパネルの浮き上がりなどの場合の固定に対応し難い欠点がある。また、特開平７−２３３６１８の固定装置は止め具の縦溝と螺旋状傾斜溝にパネル押さえの突起を係合させて固定するものであるが、突起が一か所のためにパネルの４隅が均等に締め付けられないという問題点がある。
【０００４】
これらの点から、さらに締代が大きく、パネルが均等にワンタッチで締め付けられるフリーアクセスフロアが要求されている。
【０００５】
そこで本発明は、上記問題点を解決し、フロアパネルをワンタッチで固定でき、締代が大きく、パネルが均等に締め付けられるフリーアクセスフロアを提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明のフリーアクセスフロアは、大径の頭部と外周に２条以上の螺旋状溝が設けられた小径の柱部とを有するフロアパネル固定部材と、フロアパネルを載置し前記フロアパネル固定部材の柱部の螺旋状溝に係合する２以上の突起が設けられた係合孔を有するフロアパネル支持部材とを備えたフリーアクセスフロアにおいて、前記フロアパネル固定部材の大径の頭部下面に小突起が設けられ、載置されるフロアパネルの固定面に前記小突起に係合する複数の切込みが設けられたことを特徴とするものである。
【０００７】
すなわち、本発明のフリーアクセスフロアは、一般のねじよりねじり角の大きい螺旋状溝と突起を係合させてパネルを固定するので、パネルの着脱の際に固定部材の回転角が小さくてすむ。すなわちワンタッチでパネルの着脱ができる。これにより、締代が大きくできパネルが浮き上がった場合も容易に緊締できる。またパネルの固定の緊締の場合もワンタッチでできるとともに、パネルの取り外しの際に固定部材を緩めると頭部がパネルの面から浮き上がるので容易に固定部材の取り外しができる。さらに、従来の突起が１個の固定部材では固定部材が傾いて４枚のパネルが均等に固定できない場合が生ずるが、本発明では２個以上の突起と２条以上の螺旋状溝を備えているので、傾くことがなく４枚のパネルで構成する固定部を均等に緊締できるという特徴がある。また１個の突起が破損し場合もパネルが外れるようなことがない。ここでフロアパネル支持部材とは、床面に設置される支持脚とフロアパネルを受けて保持する調整台とを含むものをいう。また螺旋状溝とは等ねじり角度の螺旋のみでなく部分的にねじり角度の異なる螺旋状の形状をもいう。
【０００８】
また本発明のフリーアクセスフロアは、大径の頭部と螺旋状切欠が設けられた小径の柱部とを有するフロアパネル固定部材と、フロアパネルを載置し前記フロアパネル固定部材の柱部の螺旋状切欠に係合する係合ピンが設けられた係合孔を有するフロアパネル支持部材とを備えたフリーアクセスフロアにおいて、前記フロアパネル固定部材の大径の頭部下面に小突起が設けられ、載置されるフロアパネルの固定面に前記小突起に係合する複数の切込みが設けられたことを特徴とするものである。
【０００９】
本構成のフリーアクセスフロアも螺旋状溝と係合部を係合させてパネルを緊締するものであるが、本構成は係合孔に突起の代わりに係合ピンを直交して設け、これと固定部材の螺旋状切欠とを係合させて緊締することに特徴がある。このような構成にすると係合孔の突起のような特殊な成形が不要になり工作が容易になるという特徴がある。
【００１０】
また本発明のフリーアクセスフロアは、大径の頭部と柱軸に直交して２以上の突起が設けられた小径の柱部とを有するフロアパネル固定部材と、フロアパネルを載置し前記フロアパネル固定部材の柱部の突起に係合する螺旋状溝を有する円筒部材を内面に設けられた係合孔を有するフロアパネル支持部材とを備えたフリーアクセスフロアにおいて、前記フロアパネル固定部材の大径の頭部下面に小突起が設けられ、載置されるフロアパネルの固定面に前記小突起に係合する複数の切込みが設けられたことを特徴とするものである。
【００１１】
前記螺旋状溝を有する円筒部材は管材から成形してもよいが、該溝形状の切欠を有する板材を巻いて成形することが簡易に螺旋状溝を成形するために望ましい。
【００１２】
本構成は固定部材に突起を設け、係合孔に螺旋状溝を設けて緊締するものである。通常係合孔に螺旋状溝を成形するには工数を要するが、本発明では係合孔の内周に螺旋状溝を有する円筒部材を接着などにより固着することにより成形するので極めて容易である。さらに、この円筒部材を溝形状の切欠を有する板材を巻いて成形することにより一層簡易になる。
【００１３】
さらに本発明のフリーアクセスフロアは、大径の頭部と２条以上の多条雄ねじが設けられた小径の柱部とを有するフロアパネル固定部材と、フロアパネルを載置し前記フロアパネル固定部材の多条雄ねじに螺合する雌ねじ孔が設けられた係合孔を有するフロアパネル支持部材とを備えたフリーアクセスフロアにおいて、前記フロアパネル固定部材の大径の頭部下面に小突起が設けられ、載置されるフロアパネルの固定面に前記小突起に係合する複数の切込みが設けられたことを特徴とするものである。
【００１４】
このように、パネルの緊締に多条ねじを使用することにより、固定部材の少ない回転でパネルの脱着ができ、かつ締代が大きく取れるので浮き上がったパネルの緊締が容易にできるとともに、取り外しの際に固定部材の飛び出しが大きく取れて取り外しが容易になる。
【００１５】
前記フロアパネル固定部材または円筒部材に設けられた螺旋状溝又は螺旋状切欠は、前記突起または前記係合ピンへの係合開始部分のねじり角が大きく、係合終了部分のねじり角が小さいことが望ましい。前述の特開平７−２３３６１８の固定部材では縦溝と螺旋状傾斜溝に突起を係合させているが、固定部材の締代は突起が螺旋状傾斜溝に噛み込んだ位置から決定されるために締代が大きく取れないため浮上がったパネルの緊締などの場合に問題がある。本発明は突起などに係合が開始する部分のねじり角が大きくされているので、噛み合い始めから固定部材を引き込む力が働き、係合が終了する部分のねじり角が小さくされているので固定部材を回り戻す力が小さく緩みを生ずることがない。このため締代を大きくすることができ前記従来方法の欠点が解消される。なお、係合終了部分のねじり角は０に近い角度にすることができる。
【００１６】
上記本発明のフリーアクセスフロアは、前記フロアパネル固定部材の大径の頭部下面に小突起が設けられ、載置されるフロアパネルの固定面に前記小突起に係合する複数の切込みが設けられることにより、フロアパネルの緊締時にこの小突起と切込みが噛み合うので押さえ部材の緩み防止の効果が大きい。
【００１７】
さらに前記フロアパネル支持部材に弾性材を設置することにより、一層押さえ部材の緩み防止を強固にすることができる。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態を図面により具体的に説明する。
【００１９】
［第１実施形態］
図１は本発明第１実施形態のフロアパネルの固定部材の構成を示す斜視図、図２は図１のＡ−Ａ断面図、図３は図２のＢ視図、図４は固定部材の螺旋状溝の形状を示す展開図である。
【００２０】
これらの図を用いて本発明のフリーアクセスフロアの構造を説明する。本発明のフリーアクセスフロアは、フロアパネル１とフロアパネル固定部材２０とフロアパネル支持部材とを備え、フロアパネル支持部材は調整台１０と支持脚７とから構成されている。調整台１０は円板の台座１１上の中心に固定部材２０の柱部２２の外径が遊合する内径を有する係合孔１３が設けられ、その回りに４つ爪状に４個の受部１２が等角度に配設されている。係合孔１３の入口に柱部２２の螺旋状溝２３に係合する２個の突起１４が設けられている。
【００２１】
調整台１０の係合孔１３の下部のボス１６に軸心を同じくしてねじ孔１６ａが設けられ、床面に配置される支持脚７の基板５に立設された調整ねじ６に螺合されて調整台１０の高さが調整され、図示しない止めねじにより固定されるようになっている。前記台座１１はリブ１１ａにより補強されてボス１６に固定されている。
【００２２】
調整台１０の受部１２には位置決め溝１２ａが設けられ、図示しないパネル下面の位置決め部材に係合するようになっている。また、パネル１の下面に接する部分にゴム、プラスチックなどの弾性体１５が接着されている。これによってパネル１を緊締した際に受部１２との密着がよくがたが生じない。
【００２３】
台座１１の４個の受部の中間に等間隔に４本のノックピン１７が突設され、パネル１の下面に設けられた位置決め孔に挿入されて位置決め溝１２ａとともにパネル１の位置決めをするようになっている。
【００２４】
パネル１の４隅には４枚のパネルで形成する固定孔２と固定面３と座孔４が設けられている。固定部材２０は大径の頭部２１と小径の柱部２２からなる２段円柱をなし、柱部２２の外径は前記固定孔２の径よりやや小さく、頭部２１の外径は座孔４の径よりやや小さく、座孔４の深さよりよりやや低い高さになっている。頭部２１の上面にはドライバ溝２５が設けられている。
【００２５】
固定部材２０の柱部２２の外周には螺旋状溝２３が設けられている。螺旋状溝２３は図４の展開図に示す形状をなし、この溝が係合孔１３の突起１４に係合する。図に示すように螺旋状溝２３は、侵入部２３ａと係合開始部２３ｂと係合終了部２３ｃとからなり、係合開始部２３ｂのねじり角αが大きく、係合終了部２３ｃのねじり角βが小さくされている。このようにねじり角の大きい噛み付きを設けることにより、前記従来の特開平７−２３３６１８の縦溝と螺旋状傾斜溝の形状の固定部材に比して締代を大きくとることができ、浮き上がったパネルを固定することが容易になる。また、係合終了部のねじり角を小さくすることによりパネルの締め力を大きくとることができ、緩みも減少できる。この係合終了部のねじり角は０に近くしてもよい。
【００２６】
また、固定部材２０の頭部２１の下面の４か所に小突起２４が設けられ、フロアパネル１の固定面３に図２及び図５に示すようにこの小突起２４に係合する複数の切込み３ａが放射状に設けられている。
【００２７】
以下、上記第１実施形態の構成のフリーアクセスフロアの操作について説明する。まず、床面に支持脚７の基板５を設置して、調整ねじ６に調整台１０のねじ孔１６ａを螺入して高さを調整し、図示しない止めねじで調整ねじ６とボス１６を固定する。次にフロアパネル１を位置決め溝１２ａとノックピン１７に係合させて調整台１０の上の定位置に置く。そして、固定部材２０の柱部２２を調整台１０上に載置されたパネル１の隅部が形成する固定孔２に挿通させて係合孔１３に挿入し、螺旋状溝２３の侵入部２３ａを突起１４に合わせて固定部材２０を回転してねじ込む。
【００２８】
すると、螺旋状溝２３の係合開始部２３ｂが突起１４に係合して固定部材２０が引き込まれ、突起１４が係合終了部２３ｃにきてパネル１が調整台１０に固定される。このとき、パネル１と調整台１０の間に弾性材１５が介在するので、パネル１は確実に固定される。また、パネルを固定した位置で、固定部材２０の頭部２１の下面の小突起２４がパネルの固定座面の切込み３ａに食い込んで固定部材２０の回り止めをする
【００２９】
このように本発明のフロアパネルの固定部材によれば、固定部材を半回転たらず回転させることによりワンタッチでパネルを固定することがで、また大きなねじり角を有する係合開始部２３ｂが設けられているので、螺旋状溝２３の侵入部２３ａを縦溝にした従来の固定部材に比して大きな締代を得ることができる。そしてパネルと調整台が弾性的に接触し、固定された位置で回り止めされるので固定が緩むことがない。また、取り外しの際に固定部材２０を逆回転すると、固定部材２０がフロアパネルの面から浮き上がるので抜き取りが容易である。
【００３０】
［第２実施形態］
次に本発明の第２実施形態について説明する。図６は第２実施形態の固定部材の上面図、図７は図６のＣ−Ｃ断面図である。図において調整台１０１は第１実施形態と近似するので同一部分は同記号を使用し、第１実施形態と異なる部分について説明する。
【００３１】
調整台１０１は円板の台座１１上の中心に係合孔１３１が設けられ、その回りに４個の受部１２が配設されることは第１実施形態と同じである。係合孔１３１は固定部材２０１の柱部２２１の外径が遊合する内径を有し、係合孔１３１に軸線に直交して柱部２２１の螺旋状切欠２３１に係合する係合ピン１４１が設けられている。
【００３２】
固定部材２０１は大径の頭部２１１と小径の柱部２２１からなり、頭部２１１の下面に２個の小突起２４１が設けられ上面にドライバ溝２５１が設けられている。そして、フロアパネル１の固定面３にこの小突起２４１に係合する複数の切込み３ａが放射状に設けられている点は第１実施形態に近似している。固定部材２０１の柱部２２１は螺旋状溝を形成するように切欠かれた二股爪状の切欠２３１になって、この螺旋状切欠２３１が係合孔１３１の係合ピン１４１に係合する形状をなしている。
【００３３】
以下、上記第２実施形態の構成のフロアパネルの固定部材の操作について説明する。床面に基板５を設置してフロアパネル１を調整台１０の上に置くまでの操作は第１実施形態と同様である。次に固定部材２０１の柱部２２１を調整台１０上に載置されたパネル１の隅部が形成する固定孔２に挿通させて係合孔１３１に挿入し、二股爪の螺旋状切欠２３１を係合ピン１４１に合わせ固定部材２０１を回転させてねじ込む。
【００３４】
こうすると、螺旋状切欠２３１が係合ピン１４１に係合して固定部材２０１が引き込まれパネル１が調整台１０１に固定される。このように本実施形態のフロアパネルの固定部材によれば、固定部材を半回転たらず回転させることによりワンタッチでパネルを固定することができる。また、パネルを固定した位置で、固定部材２０１の小突起２４１がパネルの固定面の切込み３ａにより回り止めされ、固定部材２０１を逆回転するとフロアパネルの面から浮き上がり抜き取りが容易であることも第１実施形態と同様の効果がある。
【００３５】
本第２実施形態によれば、第１実施形態の係合孔１３の突起１４の成形のような特殊加工を要せず、係合ピン１４１を挿入するだけでよいので加工が容易であるという利点がある。
【００３６】
［第３実施形態］
次に本発明の第３実施形態について説明する。図１０は第３実施形態の固定部材の断面図、図１１は螺旋状溝を有する円筒部材の斜視図、図１２は図１１の展開図である。第３実施形態も他の実施形態と近似する部分は同記号を使用し異なる部分について説明する。
【００３７】
調整台１０３は円板の台座１１上の中心に係合孔１３３が設けられ、その回りに受部１２が配設されている。係合孔１３３には螺旋状溝を有する円筒部材１４３が内挿されて接着剤などで固着され、その内周に螺旋状溝１４３ａを形成している。
【００３８】
螺旋状溝を有する円筒部材１４３は、図１２の展開図に示すような２条の螺旋状溝を形成する切欠１４３ａが設けられた板材を図１１に示すように巻いて円筒状に成形されている。そして、この円筒部材１４３が係合孔１３３の内面に接着剤などで接着される。こうすることにより螺旋状溝の成形が他の加工法より簡易かつ安価にできる。
【００３９】
固定部材２０３は大径の頭部２１３と小径の柱部２２３からなる２段円柱をなし、柱部２２３の先端部に前記螺旋状溝１４３ａに係合する２個の突起２３３が設けられている。そして、頭部２１３の下面に小突起が設けられ、フロアパネルの固定面にこの小突起に係合する複数の切込みが放射状に設けられている点は第１、第２実施形態と同じであるが、図示を省略する。
【００４０】
本第３実施形態の構成のフロアパネルの固定部材の操作も、フロアパネル１を調整台１０の上に置き、固定部材２０３の柱部２２３をパネル１の固定孔２に挿通して、固定部材２０３の突起２３３を調整台１０３の螺旋状溝１４３ａに係合させ、固定部材２０３を回転させてねじ込むことによりパネル１を固定する。これにより、前記他の実施形態と同様な効果が得られてフロアパネルの固定の脱着が容易である。本実施形態は、特殊な加工を要しないので、構造が簡単で安価に製造できる特徴がある。
【００４１】
［第４実施形態］
次に本発明の第４実施形態について説明する。図８は第４実施形態の固定部材と調整台の断面図、図９は第４実施形態の固定部材の詳細図である。図において調整台１０２も前記他の実施形態と近似するので同一部分は同記号を使用し異なる部分について説明する。
【００４２】
調整台１０２は、円板の台座１１上の中心に固定部材２０２の多条雄ねじ２３２に螺合する多条ねじ孔１３２が設けられ、その回りに４個の受部１２が配設されている。本実施形態では多条ねじを２条ねじとしたが３条又は４条ねじとしてもよい。
【００４３】
固定部材２０２は大径の頭部２１２と調整台１０２の多条ねじ孔１３２に螺合する多条雄ねじ２３２からなっている。また、多条雄ねじ２３２の側面を図９に示すように平面部２３２ａに削り取っておくと、ねじ込み抵抗を少なくすることができる。その他、固定部材２０２の頭部２１２の下面の小突起、ドライバ溝２５２、及びフロアパネルの固定面の複数の切込みが放射状など第３実施形態と同じであるが、図示の詳細を省略する。
【００４４】
以下、上記第４実施形態の構成のフロアパネルの固定部材の操作について説明する。フロアパネル１を調整台１０の上に置き、固定部材２０２の多条雄ねじ２３２をパネル１の固定孔２に挿通して、多条雄ねじ２３２を調整台１０２の多条ねじ孔１３２に螺合させ固定部材２０２を回転させてねじ込む。こうすると、多条ねじであるので少ない回転で締代が大きく、前記第１、第２実施形態と同様な効果が得られてフロアパネルの固定の脱着が容易である。
【００４５】
以上述べたように、本発明実施形態のフリーアクセスフロアは、パネルを支持する調整台の係合孔に２以上の突起を設け、この突起を固定部材の２条以上の螺旋状溝に係合させてパネルの固定面を緊締して固定するので、固定部材の小さい回転角、すなわちワンタッチでパネルの着脱ができ、締代が大きくパネルが浮き上がっている場合も容易に緊締できる。
【００４６】
また、パネルの取り外しの際に、固定部材を緩めると頭部がパネルの面から浮き上がるので容易に固定部材の取り外しができる。さらに、本発明は２以上の突起と２条以上の螺旋状溝を係合させるので、突起が１個の固定部材のように固定部材が傾いて４枚のパネルが均等に固定できないようなことがなく４枚の固定部が均等に緊締され、また１個の突起が破損し場合もパネルが外れるようなことがないという特徴がある。
【００４７】
また、前記固定部材の螺旋状溝は、突起との係合開始部のねじり角を大きく、係合終了部のねじり角を小さくすることにより、縦溝と螺旋状溝との係合に比して固定部材の締代が大きく取れ、緩みを生ずることもない。
【００４８】
また、固定部材の頭部の下面に小突起を設け、フロアパネルの固定面に切込みを設けて、緊締時にこの小突起と切込みが噛み合うようにすれば固定部材の緩みを防止することができる。さらに調整台の受部に弾性材を装着することにより、一層固定部材の緩み防止を強固にすることができる。
【００４９】
また本発明のフリーアクセスフロアは、前記調整台の係合孔に直交した係合ピンを設け、固定部材の螺旋状切欠をこの係合ピンに係合させてパネルの固定面を緊締してパネルを固定してもよい。こうすれば加工が簡単で上記と同様の効果が得られる。
【００５０】
さらに本発明のフリーアクセスフロアは、調整台の係合孔内周に螺旋状溝を有する円筒部材を固着して２条以上の螺旋溝を形成させ、固定部材に設けられた突起をこの螺旋状溝に係合させてパネルの固定面を緊締して固定するようにしてもよい。この場合、螺旋状溝を有する円筒部材は管材から成形してもよいが、該溝形状の切欠を有する板材を巻いて成形することが簡易に螺旋状溝を成形するために望ましい。
【００５１】
このように係合孔の内周に螺旋状溝を有する円筒部材を接着などにより固着するようにすれば、螺旋状溝の成形に工数を要しないで成形が極めて容易であり、これによっても上記と同様の効果が得られる。
【００５２】
また本発明のフリーアクセスフロアは、前記調整台の係合孔に２以上の多条の雌ねじを設けて、この雌ねじに固定部材の多条雄ねじに螺合してパネルの固定面を緊締して固定するようにしてもよい。これによっても上記と同様の効果が得られる。
【００５３】
【発明の効果】
以上説明したように本発明のフロアパネルは、ワンタッチでフロアパネルの着脱ができ、簡易にパネル４隅が均等に固定されるので、フロアパネル設置工事が容易になりコスト低減が可能になる。
【図面の簡単な説明】
【図１】本発明第１実施形態のフリーアクセスフロアの斜視図
【図２】図１のＡ−Ａ断面図
【図３】図２のＢ視図
【図４】本発明第１実施形態の固定部材の螺旋状溝の展開図
【図５】本発明実施形態のフロアパネルの固定面の切込みの詳細を示す図
【図６】本発明第２実施形態のフリーアクセスフロアの上面図
【図７】図６のＣ−Ｃ断面図
【図８】本発明第３実施形態のフリーアクセスフロアの断面図
【図９】本発明第３実施形態の固定部材の詳細図
【図１０】本発明第４実施形態のフリーアクセスフロアの断面図
【図１１】本発明第４実施形態の螺旋状溝を有する円筒体の斜視図
【図１２】図１１の円筒体の展開図
【符号の説明】
１フロアパネル、２固定孔、３固定面、３ａ切込み、４座孔、５基板、６調整ねじ、７支持脚、１０調整台、１１台座、１２受部、１３係合孔、１４突起、１５弾性材、１６ボス、１７ノックピン、２０固定部材、２１頭部、２２柱部、２３螺旋状溝、２４小突起、２５ドライバ溝、１３１係合孔、１４１係合ピン、２０１固定部材、２１１頭部、２２１柱部、２３１螺旋状溝、２４１小突起、２５１ドライバ溝、１３２多条雌ねじ、２０２固定部材、２１２頭部、２３２多条雄ねじ、２４２小突起、２５２ドライバ溝、１３３係合孔、１４３円筒体、２０３固定部材、２１３頭部、２２３柱部、２３３突起[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a free access floor for fixing a floor panel to a support leg.
[0002]
[Prior art]
The free access floor is configured by fixing the four corners of the floor panel to the support legs installed on the floor surface, but it takes time to fix if using normal bolts etc. as a fixing method of this floor panel, so it is easy It is desirable to fix with one touch. Therefore, many inventions such as Japanese Patent Publication No. 5-46418 and Japanese Patent Laid-Open No. 7-233618 have been disclosed.
[0003]
[Problems to be solved by the invention]
However, the fixing device of the above Japanese Patent Publication No. 5-46418 has a drawback that it is difficult to cope with fixing in the case of floating of the panel or the like because the tightening allowance due to rotation is small. In addition, the fixing device disclosed in Japanese Patent Laid-Open No. 7-233618 is one in which a protrusion of a panel presser is engaged with and fixed to a longitudinal groove and a spiral inclined groove of a stopper. There is a problem that cannot be tightened evenly.
[0004]
In view of these points, there is a demand for a free access floor in which the tightening allowance is larger and the panels can be tightened evenly with one touch.
[0005]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a free access floor that solves the above-described problems, can fix a floor panel with a single touch, has a large tightening allowance, and can be tightened evenly.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a free access floor according to the present invention includes a floor panel fixing member having a large-diameter head and a small-diameter column having two or more spiral grooves on the outer periphery, and a floor panel. in the free access floor comprising a floor panel support member having an engaging hole which is provided a mounting and the floor panel pillar portion spiral groove 2 or more projections that engage the of the fixing member, the floor panel fixed A small protrusion is provided on the lower surface of the large-diameter head of the member, and a plurality of cuts that engage with the small protrusion are provided on the fixed surface of the floor panel to be placed .
[0007]
That is, in the free access floor of the present invention, the panel is fixed by engaging the spiral groove having a larger torsion angle than that of a general screw and the projection, so that the rotation angle of the fixing member can be reduced when the panel is attached or detached. That is, the panel can be attached and detached with one touch. As a result, the tightening margin can be increased and the panel can be easily tightened even when the panel is lifted. In addition, the panel can be fastened with a single touch, and when the panel is removed, the fixing member can be loosened so that the head can be lifted off the surface of the panel so that the panel can be easily removed. Furthermore, the conventional fixing member with one protrusion may cause the fixing member to be tilted and the four panels cannot be fixed uniformly. In the present invention, however, two or more protrusions and two or more spiral grooves are provided. Therefore, there is a feature that the fixing portion constituted by four panels can be tightened evenly without tilting. Further, the panel is not detached even when one protrusion is damaged. Here, the floor panel support member includes a support leg installed on the floor and an adjustment base that receives and holds the floor panel. The spiral groove means not only a spiral having an equal twist angle but also a spiral shape having a partially different twist angle.
[0008]
Further, the free access floor of the present invention includes a floor panel fixing member having a large-diameter head and a small-diameter pillar portion provided with a spiral notch, and a floor panel is placed on the floor panel fixing member. In a free access floor comprising a floor panel support member having an engagement hole provided with an engagement pin that engages with a spiral notch, a small protrusion is provided on the lower surface of the large-diameter head of the floor panel fixing member. The fixed surface of the floor panel to be placed is provided with a plurality of cuts that engage with the small protrusions .
[0009]
The free access floor of this configuration is also for tightening the panel by engaging the spiral groove and the engaging portion, but this configuration is provided with an engaging pin orthogonal to the engaging hole instead of the projection, It is characterized in that it is tightened by engaging with the helical notch of the fixing member. With such a configuration, there is a feature that a special molding such as the projection of the engagement hole is not required and the work is facilitated.
[0010]
The free access floor according to the present invention includes a floor panel fixing member having a large-diameter head and a small-diameter column portion provided with two or more protrusions orthogonal to the column axis, and the floor panel is placed on the floor. In a free access floor having a cylindrical member having a spiral groove that engages with a protrusion of a column portion of the panel fixing member and a floor panel support member having an engagement hole provided on the inner surface, the floor panel fixing member is large. A small protrusion is provided on the lower surface of the head having a diameter, and a plurality of cuts that engage with the small protrusion are provided on a fixed surface of the floor panel to be placed .
[0011]
The cylindrical member having the spiral groove may be formed from a tube material, but it is desirable to wind and form a plate material having the groove-shaped notch in order to easily form the spiral groove.
[0012]
In this configuration, the fixing member is provided with a protrusion, and the engagement hole is provided with a spiral groove to be tightened. Usually, it takes man-hours to form the spiral groove in the engagement hole, but in the present invention, it is very easy because the cylindrical member having the spiral groove is fixed to the inner periphery of the engagement hole by bonding or the like. . Further, this cylindrical member is further simplified by winding and forming a plate material having a groove-shaped notch.
[0013]
Furthermore, the free access floor of the present invention includes a floor panel fixing member having a large-diameter head and a small-diameter column portion provided with two or more multi-threaded male screws, and the floor panel fixing member placed on the floor panel. And a floor panel support member having an engagement hole provided with a female screw hole to be screwed into the multi-thread male screw, a small protrusion is provided on the lower surface of the large-diameter head of the floor panel fixing member. The fixed surface of the floor panel to be placed is provided with a plurality of cuts that engage with the small protrusions .
[0014]
In this way, by using a multi-threaded screw for tightening the panel, the panel can be attached and detached with a small number of rotations of the fixing member, and the tightening allowance can be increased so that the panel that has been lifted can be easily tightened. The protrusion of the fixing member can be greatly removed, and the removal becomes easy.
[0015]
The spiral groove or spiral notch provided in the floor panel fixing member or the cylindrical member has a large twist angle at the engagement start portion with respect to the protrusion or the engagement pin, and a small twist angle at the engagement end portion. Is desirable. In the fixing member disclosed in Japanese Patent Laid-Open No. 7-233618, the protrusion is engaged with the longitudinal groove and the spiral inclined groove, but the fastening allowance of the fixing member is determined from the position where the protrusion is engaged with the spiral inclined groove. However, there is a problem in the case of tightening the lifted panel because the allowance is not large. In the present invention, since the torsion angle of the portion where the engagement starts to the protrusion or the like is increased, the force for pulling the fixing member from the beginning of the engagement works, and the torsion angle of the portion where the engagement ends is reduced, so the fixing member The force to turn back is small and does not cause looseness. For this reason, the tightening margin can be increased, and the disadvantages of the conventional method are eliminated. The torsion angle at the engagement end portion can be set to an angle close to zero.
[0016]
In the free access floor of the present invention, a small protrusion is provided on the bottom surface of the large-diameter head of the floor panel fixing member, and a plurality of cuts that engage with the small protrusion are provided on the fixed surface of the floor panel to be placed. As a result, when the floor panel is tightened, the small protrusion and the cut are engaged with each other, so that the effect of preventing the holding member from loosening is great.
[0017]
Further, by installing an elastic material on the floor panel support member, it is possible to further strengthen the prevention of loosening of the pressing member.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
[0019]
[First Embodiment]
1 is a perspective view showing the structure of a fixing member for a floor panel according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, FIG. 3 is a view in FIG. It is an expanded view which shows the shape of a spiral groove.
[0020]
The structure of the free access floor of this invention is demonstrated using these figures. The free access floor of the present invention includes a floor panel 1, a floor panel fixing member 20, and a floor panel support member, and the floor panel support member includes an adjustment base 10 and support legs 7. The adjustment base 10 is provided with an engagement hole 13 having an inner diameter in which the outer diameter of the column portion 22 of the fixing member 20 is loosely arranged at the center on the base 11 of the disk, and four receiving holes in the form of four claws are provided around the hole 13. The parts 12 are arranged at an equal angle. Two protrusions 14 that engage with the spiral groove 23 of the column portion 22 are provided at the entrance of the engagement hole 13.
[0021]
A screw hole 16a is provided in the boss 16 below the engagement hole 13 of the adjustment base 10 with the same axial center, and is screwed into the adjustment screw 6 standing on the substrate 5 of the support leg 7 arranged on the floor surface. Thus, the height of the adjusting table 10 is adjusted and fixed by a set screw (not shown). The pedestal 11 is reinforced by ribs 11 a and fixed to the boss 16.
[0022]
The receiving portion 12 of the adjustment base 10 is provided with a positioning groove 12a so as to be engaged with a positioning member (not shown) on the lower surface of the panel. In addition, an elastic body 15 such as rubber or plastic is bonded to a portion in contact with the lower surface of the panel 1. As a result, when the panel 1 is tightened, the close contact with the receiving portion 12 does not occur.
[0023]
Four knock pins 17 are projected at equal intervals in the middle of the four receiving portions of the pedestal 11 and are inserted into positioning holes provided on the lower surface of the panel 1 so that the panel 1 is positioned together with the positioning grooves 12a. It has become.
[0024]
At the four corners of the panel 1, there are provided a fixing hole 2, a fixing surface 3 and a seat hole 4 formed by four panels. The fixing member 20 is a two-stage cylinder composed of a large-diameter head portion 21 and a small-diameter column portion 22. The outer diameter of the column portion 22 is slightly smaller than the diameter of the fixing hole 2, and the outer diameter of the head portion 21 is a seat hole. The height is slightly smaller than the diameter of 4 and slightly lower than the depth of the seat hole 4. A driver groove 25 is provided on the upper surface of the head 21.
[0025]
A spiral groove 23 is provided on the outer periphery of the column portion 22 of the fixing member 20. The spiral groove 23 has a shape shown in the developed view of FIG. 4, and this groove engages with the protrusion 14 of the engagement hole 13. As shown in the figure, the spiral groove 23 includes an intrusion portion 23a, an engagement start portion 23b, and an engagement end portion 23c. The torsion angle α of the engagement start portion 23b is large, and the torsion angle of the engagement end portion 23c. β is reduced. By providing the engagement with a large torsion angle in this way, it is possible to increase the tightening margin as compared with the conventional fixing member in the shape of the vertical groove and the spiral inclined groove of Japanese Patent Application Laid-Open No. 7-233618. It becomes easy to fix. Further, by reducing the torsion angle of the engagement end portion, it is possible to increase the panel tightening force and to reduce the looseness. The torsion angle of the engagement end portion may be close to zero.
[0026]
In addition, small projections 24 are provided at four locations on the lower surface of the head 21 of the fixing member 20, and a plurality of engagements are made on the fixing surface 3 of the floor panel 1 as shown in FIGS. 2 and 5. The cuts 3a are provided radially.
[0027]
Hereinafter, the operation of the free access floor having the configuration of the first embodiment will be described. First, the substrate 5 of the support leg 7 is installed on the floor surface, the screw hole 16a of the adjustment base 10 is screwed into the adjustment screw 6, the height is adjusted, and the adjustment screw 6 and the boss 16 are attached with a set screw (not shown). Fix it. Next, the floor panel 1 is engaged with the positioning groove 12 a and the knock pin 17 and placed at a fixed position on the adjustment table 10. Then, the column portion 22 of the fixing member 20 is inserted into the engagement hole 13 through the fixing hole 2 formed by the corner portion of the panel 1 placed on the adjustment table 10, and the intruding portion 23 a of the spiral groove 23 is inserted. The fixing member 20 is rotated and screwed in accordance with the protrusion 14.
[0028]
Then, the engagement start portion 23 b of the spiral groove 23 engages with the protrusion 14 and the fixing member 20 is drawn, and the protrusion 14 comes to the engagement end portion 23 c and the panel 1 is fixed to the adjustment base 10. At this time, since the elastic material 15 is interposed between the panel 1 and the adjusting table 10, the panel 1 is fixed securely. Further, at the position where the panel is fixed, the small protrusion 24 on the lower surface of the head 21 of the fixing member 20 bites into the notch 3a on the fixing seat surface of the panel to prevent the fixing member 20 from rotating.
Thus, according to the fixing member of the floor panel of the present invention, the panel can be fixed with one touch by rotating the fixing member without rotating it halfway, and the engagement start portion 23b having a large torsion angle is provided. Therefore, a larger fastening allowance can be obtained as compared with a conventional fixing member in which the intrusion portion 23a of the spiral groove 23 is a vertical groove. And since a panel and an adjustment stand contact elastically and are prevented from rotating in the fixed position, fixation does not loosen. Further, when the fixing member 20 is reversely rotated during the removal, the fixing member 20 is lifted from the surface of the floor panel, so that the extraction is easy.
[0030]
[Second Embodiment]
Next, a second embodiment of the present invention will be described. 6 is a top view of the fixing member of the second embodiment, and FIG. 7 is a cross-sectional view taken along the line CC of FIG. In the figure, the adjustment base 101 is similar to that of the first embodiment, so the same parts are denoted by the same symbols, and different parts from the first embodiment will be described.
[0031]
The adjustment base 101 is provided with an engagement hole 131 at the center on the base 11 of the disk, and the four receiving portions 12 are disposed around it, as in the first embodiment. The engagement hole 131 has an inner diameter where the outer diameter of the column portion 221 of the fixing member 201 is loosely engaged, and the engagement pin 141 engages with the engagement hole 131 and the spiral notch 231 of the column portion 221 perpendicular to the axis. Is provided.
[0032]
The fixing member 201 includes a large-diameter head portion 211 and a small-diameter column portion 221. Two small protrusions 241 are provided on the lower surface of the head portion 211 , and a driver groove 251 is provided on the upper surface . And the point by which the several cut 3a engaged with this small protrusion 241 is radially provided in the fixed surface 3 of the floor panel 1 is similar to 1st Embodiment. The column portion 221 of the fixing member 201 is a forked claw-shaped notch 231 that is notched so as to form a spiral groove, and the spiral notch 231 has a shape that engages with the engagement pin 141 of the engagement hole 131. There is no.
[0033]
Hereinafter, the operation of the fixing member of the floor panel having the configuration of the second embodiment will be described. The operation until the substrate 5 is installed on the floor and the floor panel 1 is placed on the adjustment table 10 is the same as that in the first embodiment. Next, the column portion 221 of the fixing member 201 is inserted into the engaging hole 131 through the fixing hole 2 formed by the corner portion of the panel 1 placed on the adjusting table 10, and the bifurcated claw spiral notch 231 is inserted. The fixing member 201 is rotated in accordance with the engaging pin 141 and screwed.
[0034]
As a result, the spiral notch 231 engages with the engagement pin 141, the fixing member 201 is pulled in, and the panel 1 is fixed to the adjustment base 101. Thus, according to the fixing member of the floor panel of this embodiment, the panel can be fixed with one touch by rotating the fixing member without rotating it halfway. Further, at the position where the panel is fixed, the small protrusion 241 of the fixing member 201 is prevented from rotating by the notch 3a of the fixing surface of the panel, and when the fixing member 201 is rotated in the reverse direction, it is easy to be lifted from the surface of the floor panel. There is an effect similar to that of the first embodiment.
[0035]
According to the second embodiment, special processing such as molding of the projection 14 of the engagement hole 13 of the first embodiment is not required, and it is only necessary to insert the engagement pin 141, so that processing is easy. There are advantages.
[0036]
[Third Embodiment]
Next, a third embodiment of the present invention will be described. FIG. 10 is a sectional view of a fixing member according to the third embodiment, FIG. 11 is a perspective view of a cylindrical member having a spiral groove, and FIG. 12 is a development view of FIG. In the third embodiment, the same symbols are used for portions that are similar to those of the other embodiments, and different portions will be described.
[0037]
The adjustment base 103 is provided with an engagement hole 133 at the center on the base 11 of the disk, and the receiving portion 12 is disposed around the engagement hole 133. A cylindrical member 143 having a spiral groove is inserted into the engagement hole 133 and fixed with an adhesive or the like, and a spiral groove 143a is formed on the inner periphery thereof.
[0038]
A cylindrical member 143 having a spiral groove is formed into a cylindrical shape by winding a plate material provided with notches 143a forming two spiral grooves as shown in the developed view of FIG. 12, as shown in FIG. Yes. The cylindrical member 143 is bonded to the inner surface of the engagement hole 133 with an adhesive or the like. In this way, the helical groove can be formed more easily and cheaply than other processing methods.
[0039]
The fixing member 203 is a two-stage cylinder composed of a large-diameter head portion 213 and a small-diameter column portion 223, and two protrusions 233 that engage with the spiral groove 143a are provided at the tip of the column portion 223. . And the small protrusion is provided in the lower surface of the head 213, and the point which is provided with the several cut | disconnection engaged with this small protrusion radially on the fixed surface of a floor panel is the same as 1st, 2nd embodiment. However, illustration is abbreviate | omitted.
[0040]
In the operation of the fixing member of the floor panel having the configuration of the third embodiment, the floor panel 1 is placed on the adjusting table 10 and the column portion 223 of the fixing member 203 is inserted into the fixing hole 2 of the panel 1 to fix the fixing member. The projection 233 of 203 is engaged with the spiral groove 143a of the adjustment base 103, and the fixing member 203 is rotated and screwed to fix the panel 1. Thereby, the effect similar to the said other embodiment is acquired, and the removal | desorption of fixation of a floor panel is easy. Since this embodiment does not require special processing, the structure is simple and can be manufactured at low cost.
[0041]
[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. FIG. 8 is a cross-sectional view of the fixing member and the adjusting table of the fourth embodiment, and FIG. 9 is a detailed view of the fixing member of the fourth embodiment. In the figure, the adjustment table 102 is also similar to that of the other embodiment, so the same parts will be described using the same symbols and different parts.
[0042]
The adjustment base 102 is provided with a multi-thread screw hole 132 that is screwed into the multi-thread male screw 232 of the fixing member 202 at the center of the disk base 11, and four receiving portions 12 are disposed around the hole. . In the present embodiment, the multi-thread screw is a double thread, but it may be a three- or four-thread.
[0043]
The fixing member 202 includes a large-diameter head 212 and a multi-thread male screw 232 that is screwed into the multi-thread screw hole 132 of the adjustment base 102. Further, if the side surface of the multi-thread male screw 232 is scraped off to the flat portion 232a as shown in FIG. 9, the screwing resistance can be reduced. In addition, the small protrusions on the lower surface of the head 212 of the fixing member 202 , the driver grooves 252 and a plurality of cuts in the fixing surface of the floor panel are the same as in the third embodiment, such as radial shapes, but the details of the illustration are omitted.
[0044]
Hereinafter, operation of the fixing member of the floor panel having the configuration of the fourth embodiment will be described. The floor panel 1 is placed on the adjustment table 10, the multi-thread male screw 232 of the fixing member 202 is inserted into the fixing hole 2 of the panel 1, and the multi-thread male screw 232 is screwed into the multi-thread screw hole 132 of the adjustment table 102. The fixing member 202 is rotated and screwed. In this case, since it is a multi-threaded screw, the tightening margin is large with a small number of rotations, and the same effect as in the first and second embodiments can be obtained, and the floor panel can be easily fixed and detached.
[0045]
As described above, in the free access floor according to the embodiment of the present invention, two or more protrusions are provided in the engagement holes of the adjustment stand that supports the panel, and these protrusions are engaged with two or more spiral grooves of the fixing member. Since the fixing surface of the panel is tightened and fixed, the panel can be attached and detached with a small rotation angle of the fixing member, that is, one-touch, and the panel can be easily tightened even when the panel has a large tightening allowance.
[0046]
Further, when the panel is removed, if the fixing member is loosened, the head is lifted from the surface of the panel, so that the fixing member can be easily removed. Furthermore, since the present invention engages two or more protrusions and two or more spiral grooves, the fixing members are inclined like the one fixing member, and the four panels cannot be fixed uniformly. The four fixing parts are evenly tightened, and the panel does not come off even when one projection is damaged.
[0047]
Further, the helical groove of the fixing member is larger than the engagement of the longitudinal groove and the helical groove by increasing the torsion angle of the engagement start portion with the protrusion and decreasing the torsion angle of the engagement end portion. Therefore, the fixing member has a large allowance and does not loosen.
[0048]
Further, if a small protrusion is provided on the lower surface of the head of the fixing member and a notch is provided on the fixing surface of the floor panel so that the small protrusion and the notch engage with each other at the time of tightening, loosening of the fixing member can be prevented. Furthermore, by attaching an elastic material to the receiving part of the adjustment base, it is possible to further strengthen the prevention of loosening of the fixing member.
[0049]
In the free access floor of the present invention, an engagement pin orthogonal to the engagement hole of the adjustment base is provided, and the fixing surface of the panel is tightened by engaging the helical notch of the fixing member with the engagement pin. May be fixed. In this way, processing is simple and the same effect as described above can be obtained.
[0050]
Furthermore, in the free access floor of the present invention, a cylindrical member having a spiral groove is fixed to the inner periphery of the engagement hole of the adjustment base to form two or more spiral grooves, and the protrusion provided on the fixing member is formed in this spiral shape. The fixing surface of the panel may be tightened and fixed by engaging with the groove. In this case, the cylindrical member having the spiral groove may be formed from a tube material, but it is desirable to wind and form the plate member having the groove-shaped notch in order to easily form the spiral groove.
[0051]
If the cylindrical member having the spiral groove is fixed to the inner periphery of the engagement hole in this way by bonding or the like, the formation of the spiral groove is extremely easy without requiring any man-hours. The same effect can be obtained.
[0052]
In the free access floor of the present invention, two or more multi-threaded female screws are provided in the engagement hole of the adjustment base, and the fixing surface of the panel is tightened by screwing the female thread into the multi-threaded male thread of the fixing member. It may be fixed. This also provides the same effects as described above.
[0053]
【The invention's effect】
As described above, the floor panel of the present invention can be attached and detached with a single touch, and the four corners of the panel are simply fixed evenly. Therefore, the floor panel installation work is facilitated and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a free access floor according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. FIG. FIG. 5 is a developed view of the spiral groove of the fixing member. FIG. 5 is a diagram showing details of the cut of the fixing surface of the floor panel of the embodiment of the present invention. FIG. 6 is a top view of the free access floor of the second embodiment of the present invention. 6 is a cross-sectional view taken along the line CC in FIG. 6. FIG. 8 is a cross-sectional view of the free access floor according to the third embodiment of the present invention. FIG. 9 is a detailed view of a fixing member according to the third embodiment of the present invention. FIG. 11 is a perspective view of a cylindrical body having a spiral groove according to a fourth embodiment of the present invention. FIG. 12 is a development view of the cylindrical body of FIG.
DESCRIPTION OF SYMBOLS 1 Floor panel, 2 fixing hole, 3 fixing surface, 3a cutting, 4 seat hole, 5 board | substrate, 6 adjustment screw, 7 support leg, 10 adjustment stand, 11 base, 12 receiving part, 13 engagement hole, 14 protrusion, 15 Elastic material, 16 boss, 17 dowel pin, 20 fixing member, 21 head, 22 pillar, 23 spiral groove, 24 small protrusion, 25 driver groove, 131 engaging hole, 141 engaging pin, 201 fixing member, 211 head Part, 221 pillar part, 231 spiral groove, 241 small protrusion, 251 driver groove, 132 multi-thread female screw, 202 fixing member, 212 head, 232 multi-thread male screw, 242 small protrusion, 252 driver groove, 133 engagement hole, 143 Cylinder, 203 Fixing member, 213 Head, 223 Column, 233 Projection

Claims

A floor panel fixing member having a large-diameter head and a small-diameter pillar portion provided with two or more spiral grooves on the outer periphery, and a spiral groove in the pillar portion of the floor panel fixing member on which the floor panel is placed A floor panel support member having an engagement hole provided with two or more protrusions that engage with the floor panel fixing member, and a small protrusion is provided on the lower surface of the large-diameter head of the floor panel fixing member. A free access floor , wherein a fixed surface of a floor panel to be placed is provided with a plurality of cuts that engage with the small protrusions .

A floor panel fixing member having a large-diameter head and a small-diameter column provided with a spiral notch, and an engagement for placing the floor panel and engaging the spiral notch of the column of the floor panel fixing member In a free access floor provided with a floor panel support member having an engagement hole provided with a pin , a small protrusion is provided on the lower surface of the large-diameter head of the floor panel fixing member, and the floor panel to be placed is fixed. A free access floor , wherein a plurality of cuts for engaging the small protrusions are provided on a surface.

A floor panel fixing member having a large-diameter head and a small-diameter column portion provided with two or more protrusions orthogonal to the column axis, and a floor panel placed on the protrusion of the column portion of the floor panel fixing member In a free access floor comprising a cylindrical member having a helical groove to be engaged and a floor panel support member having an engagement hole provided on the inner surface, a small protrusion is formed on the lower surface of the large-diameter head of the floor panel fixing member. A free access floor , wherein a plurality of cuts that engage with the small protrusions are provided on a fixed surface of a floor panel that is provided and placed .

And the floor panel fixing member having a small diameter pillar portion the head and two or more strips of a multi-strip male screw having a large diameter is provided, and placing the floor panel internal thread to be screwed into the multi-strip external thread of the floor panel fixing member In a free access floor comprising a floor panel support member having an engagement hole provided with a hole, a small protrusion is provided on the lower surface of the large-diameter head of the floor panel fixing member, and the floor panel to be placed is fixed. A free access floor , wherein a plurality of cuts for engaging the small protrusions are provided on a surface.

The free access floor according to claim 3, wherein the cylindrical member having the spiral groove is formed by winding a plate member having the groove-shaped notch.

The spiral groove or spiral notch provided in the floor panel fixing member or the cylindrical member has a large twist angle at the engagement start portion with the protrusion or the engagement pin, and a small twist angle at the engagement end portion. The free access floor according to any one of claims 1 to 3.

The free access floor according to any one of claims 1 to 4, wherein an elastic material is installed on the floor panel support member.