JP3941534B2

JP3941534B2 - Ground connection structure for floor panel and support

Info

Publication number: JP3941534B2
Application number: JP2002032284A
Authority: JP
Inventors: 修平田; 誠也浅木; 政利西沢
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-02-08
Filing date: 2002-02-08
Publication date: 2007-07-04
Anticipated expiration: 2022-02-08
Also published as: JP2003232125A

Description

【０００１】
【発明の属する技術分野】
本発明は、二重床システムのフロアパネルと支柱とに設けるアース接続構造に関するものである。
【０００２】
【従来の技術】
近年、建物の床下地の上面に支柱を配置すると共に、この支柱にフロアパネルを載置して、床下地とフロアパネルとの間に配線用の隙間を形成する二重床システムが良く用いられており、以下に説明する。
【０００３】
フロアパネル１は、図１７に示すように、平面視正方形状をした金属製の板状の部材で、外表面には非導電性の塗装が施されるものである。そして、フロアパネル１の四つの角部の下面はそれぞれ支柱２に載置されるものである。
【０００４】
支柱２は、オフィスの床下地の上面に配置されると共にフロアパネル１が載置されて床下地とフロアパネル１との間に配線用の隙間を形成する金属製もので、上端部にフロアパネル１が載置される受け部２３が設けられる。
【０００５】
ところで、このようにして支柱２にフロアパネル１を載置する二重床システムにおいては、従来より後述するコーナーロックねじ６３によってフロアパネル１と支柱２とを電気的に導通させてアース接続を構成するものである。
【０００６】
フロアパネル１には、四つの角部にそれぞれ孔を穿孔してコーナーロックプラグを取り付けることで貫通孔６２が形成してあり、貫通孔６２にはコーナーロックねじ６３が挿通されるものである。そして、フロアパネル１を支柱２に載置した際この貫通孔６２が形成された角部の下面はそれぞれ支柱２の受け部２３の上方に位置するものである。
【０００７】
受け部２３は支柱２の上端部に設けられるもので、フロアパネル１が載置された際にフロアパネル１の貫通孔６２と連通するようにねじ孔６４が穿設してある。また、コーナーロックねじ６３は、図１９に示すように、フロアパネル１の外表面に施される塗装を剥離する剥離部Ｈが突設された金属製のもので、このコーナーロックねじ６３を支柱２に載置されたフロアパネル１の貫通孔６２の上方より挿通し、支柱２の受け部２３のねじ孔６４に螺着することで、コーナーロックねじ６３を介してフロアパネル１と支柱２とを電気的に導通させるものである。
【０００８】
しかしながら、このようにコーナーロックねじ６３を用いるフロアパネル１と支柱２のアース接続構造では、支柱２にフロアパネル１を載置した後、即ち現場施工においてコーナーロックねじ６３を取り付けるものであり、このコーナーロックねじ６３や締め付けに用いる工具等の現場への搬入品の点数が増加するだけでなく、現場での施工工数も増加するという問題があるものであった。
【０００９】
また、幾度もフロアパネル１を支柱２に載置し直す場合、何度もコーナーロックねじ６３を着脱することによる支柱２の受け部２３のねじ孔６４の緩みによって電気的導通が不確実になってしまうと共に、コーナーロックねじ６３のねじ孔６４への締め付けトルクの変動によって電気的導通の抵抗値にばらつきが生じるといった問題もあるものであった。
【００１０】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、その目的とするところは、コーナーロックねじを用いることによる施工現場への搬入品の点数，施工工数の増加等が生じてしまうことのないフロアパネルと支柱のアース接続構造を提供することを課題とするものである。
【００１１】
【課題を解決するための手段】
上記課題を解決するために本発明に係るフロアパネルと支柱のアース接続構造は、外表面に非導電性の塗装が施される金属製のフロアパネル１と、該フロアパネル１の縁鍔部１３の角部Ｃを支持する金属製の支柱２とに設けるフロアパネル１と支柱２のアース接続構造であって、支柱２に、平面視正方形状の略板状をした受け部本体２４と、受け部本体２４の上面を四つの略正方形の区画に分割するように該上面に突設されて前記それぞれの区画に配置されるフロアパネル１の縁鍔部１３の角部Ｃが載置される平面視略十字状をした立設部２５とからなる受け部２３を形成し、フロアパネル１の縁鍔部１３の角部Ｃ近傍の下面１ｃにパネル側導通部３としての非塗装部分を形成し、フロアパネル１の縁鍔部１３の角部Ｃが載置される支柱２に前記パネル側導通部３と電気的に導通可能な支柱側導通部を形成し、フロアパネル１のパネル側導通部３と支柱２の支柱側導通部との間に、フロアパネル１と支柱２とを電気的に導通させるためにパネル側導通部３に取り付ける金属製のねじ部材４及び、ねじ部材４と支柱側導通部とに当接して弾性を有すると共に立設部２５が挿通される平面視略十字状をした挿通孔５４が穿孔されて受け部本体２４の立設部２５を立設していない部分であるパネル載置部２４ｂに載置される導電性部材５（５ｃ）とを設けて成ることを特徴とするものである。このような構成とすることで、フロアパネル１と支柱２とをアース接続するのにコーナーロックねじ６３のようなアース部材を現場で施工する必要がなくなり、現場施工で要する部品（部材や工具）点数，施工工数の低減が図られるものである。特に、フロアパネル１を支柱２に載置するという基本的な作業を行うだけで、簡単に電気的な導通が得られるようになるものである。また、コーナーロックねじ６３の締め付けトルクの変動によって電気的導通の抵抗値にばらつきが生じることもないものである。また、導電性部材５ｃをねじ部材４で取り付けることなく、その挿通孔５４に支柱２の立設部２５を挿通させて支柱２の受け部本体２４のパネル載置部２４ｂに載置するだけで取り付け可能となって施工が容易であり、また、フロアパネル１の下面１ｃに取り付けたねじ部材４を支柱２の受け部２３に載置した導電性部材５ｃの上にフロアパネル１の自重で圧接することができる。
【００２０】
また、ねじ部材４をタッピングねじ等の掘削ねじ４ｂで構成すると共に、該掘削ねじ４ｂにフロアパネル１の塗装を剥離する塗装剥離部を設けることが好ましい。このような構成とすることで、ナット４２を用いたりねじ孔１５を形成したりすることなくねじ部材４をフロアパネル１の角部Ｃ近傍の外表面に取り付けると共にパネル側導通部３を形成することができる。
【００２９】
【発明の実施の形態】
以下、本発明について添付図面に基づいて説明する。まず、本発明のフロアパネル１と支柱２のアース接続構造を適用する二重床システムのフロアパネル１と支柱２とについて説明する。
【００３０】
フロアパネル１は、平面視正方形状をした板状のもので、トップ板１１とボトム板１２とで外殻が構成される。（図１，図２，図８，図１５等参照）トップ板１１は、平面視正方形状をした金属製の板状の部材で、上面がフロアパネル１の上面１ａとなるものである。ボトム板１２は、平面視正方形状をした上方に開口する大略箱状の部材で、開口縁からは外方に向けて外郭がトップ板１１の外郭とほぼ同じであるフランジ状部が連設してあり、このボトム板１２のフランジ状部とトップ板１１とを平面視で外郭が重なるように溶接する。このようにトップ板１１とボトム板１２とを溶接してフロアパネル１の外殻を構成するもので、上述したようにトップ板１１の上面がフロアパネル１の上面１ａとなると共に、ボトム板１２の側面，下面がそれぞれフロアパネル１の側面１ｂ，下面１ｃとなる。また、フロアパネル１の下面１ｃには、図１５（ｂ）に示すように、ボトム板１２を屈曲させて球面状凹部１４が複数形成してある。
【００３１】
そして、このように構成されるフロアパネル１の外殻には内部に充填材７としてのモルタルを充填するもので、これによってフロアパネル１が形成され、更に、フロアパネル１の外表面（即ち、上面１ａと側面１ｂと下面１ｃ及び、後述する縁鍔部１３の上下面）には、錆び止め等のための非導電性の塗料による塗装が施されるものである。なお、図１等に示すように、フロアパネル１の四つの角部Ｃにはそれぞれ、充填材７を充填する前にトップ板１１とボトム板１２とに平面視においてほぼ重なるように孔を穿孔してこの孔にコーナーロックプラグ６１を取り付けることで貫通孔６２が形成してあり、後述するコーナーロックねじ６３を挿通可能としてある。
【００３２】
フロアパネル１は、上述したようにトップ板１１とボトム板１２とを溶接して外殻が構成されるが、ボトム板１２のフランジ状部とこの部分に溶接されているトップ板１１の周縁部とでフロアパネル１の縁鍔部１３が形成してある。縁鍔部１３は、フロアパネル１の周縁に形成される平面視ロ字状をしたもので、フロアパネル１の四つの角部Ｃ、即ち縁鍔部１３の四つの角部が支柱２に載置されるものである。
【００３３】
支柱２は、オフィスの床下地の上面に配置されると共に上端部にフロアパネル１が載置されることで床下地とフロアパネル１との間に配線用の隙間を形成するもので、台座部２１と柱脚部２２と受け部２３とで主体が構成される。（図１，図９，図１４，図１７等参照）
台座部２１は、図９等に示すように、床下地の上面に直接載置される金属製の板状の部材で、上面の中央部より上方に向けて柱脚部２２が突設される。柱脚部２２は、本実施形態では金属製のボルト２２ａ，ナット２２ｂで構成されるもので、ボルト２２ａの下端部を台座部２１に固定して台座部２１より上方に突出させると共にボルト２２ａの上端部にナット２２ｂを螺着し、ナット２２ｂの上面に後述する受け部２３を載置固定するものである。柱脚部２２をこのように構成してあるので、ナット２２ｂを回転してボルト２２ａへの螺着位置を変えることで、ナット２２ｂで載置する受け部２３の床下地の上面からの高さ（即ちフロアパネル１の床下地の上面からの高さ）を調整することができる。
【００３４】
受け部２３は、図１，図９に示すように、いずれも金属製の平面視正方形状の略板状をした受け部本体２４と、平面視略十字状をした立設部２５とで構成されるものである。受け部本体２４は、下面に上記柱脚部２２のナット２２ｂの上面に載置される柱脚載置部２４ａが形成してあり、また、受け部本体２４の上面には上記平面視略十字状をした立設部２５を突設すると共に、上面の立設部２５が突設されていない部分をパネル載置部２４ｂとしてある。立設部２５は、平面視正方形状の受け部本体２４の上面を四つのほぼ正方形の区画に分割するように受け部本体２４の上面に一体に設けてあり、これによって分割された受け部本体２４の上面のそれぞれの区画がフロアパネル１のボトム板１２の下面１ｃの角部Ｃが載置されるか又は隙間を介して配置されるパネル載置部２４ｂとなるものである。また、立設部２５の上端面は、フロアパネル１の縁鍔部１３の下面が載置される鍔載置部２５ａとなるものであり、一つの受け部２３でフロアパネル１の四つの角部Ｃを載置可能としてある。なお、本実施形態では、受け部本体２４のパネル載置部２４ｂがフロアパネル１の下面１ｃ（即ちボトム板１２の下面）に当接して支持するものではなく、縁鍔部１３の下面を立設部２５の鍔載置部２５ａ上にラバー２６を介して載置してフロアパネル１を支持するものである。また、なお、このような受け部２３には、図９に示すように、受け部本体２４に形成されるパネル載置部２４ｂにそれぞれコーナーロックねじ６３が螺着されるねじ孔６４が穿設してあり、この受け部２３のパネル載置部２４ｂにフロアパネル１のボトム板１２の下面１ｃの角部Ｃが配置された際、フロアパネル１の上面１ａ側よりコーナーロックプラグ６１の貫通孔６２に挿通したコーナーロックねじ６３を支柱２のパネル載置部２４ｂのねじ孔６４に螺着することで、フロアパネル１を支柱２に確実に固定したりフロアパネル１と支柱２とを電気的に導通したりすることができる。
【００３５】
このような支柱２は、図１４に示すように、オフィスビルやコンピュータビル等のオフィスの床下地の上面に載置するもので、この載置した支柱２にフロアパネル１を載置して床下地とフロアパネルとの間に配線用の隙間を形成するものである。なお、図中９はカーペットを示す。
【００３６】
上述したようなフロアパネル１と支柱２とに設ける本発明のアース接続構造の一実施形態について、図１及び図２に基づいて説明する。
【００３７】
本実施形態のアース接続構造は、フロアパネル１の角部Ｃ近傍の外表面にパネル側導通部３を形成すると共に支柱２に支柱側導通部を形成し、パネル側導通部３に導電性部材５ａを金属製のねじ部材４にて取り付けて導電性部材５ａを支柱側導通部に当接させることで、フロアパネル１と支柱２とをアース接続するものである。
【００３８】
パネル側導通部３は、図１に示すように、フロアパネル１の側面１ｂ（即ちボトム板１２の側面）に形成するもので、フロアパネル１の外表面に非導電性の塗料が塗装されない非塗装部分を形成して電気的導通（electrical continuity）を可能とする導通部とするものである。このパネル側導通部３としての非塗装部分を形成するには、フロアパネル１の製造の段階において、トップ板１１とボトム板１２とを溶接する前にフロアパネル１の四つの角部Ｃ近傍の側面１ｂに貫通孔（特に図示せず）をそれぞれ穿孔し、この貫通孔にねじ部材４として外周に雄ねじが刻設されたボルト４ａを外側より挿通すると共にこのボルト４ａと螺合するナット４２をボトム板１２の内側よりボルト４ａに螺着し、その後でトップ板１１とボトム板１２とを溶接し、ボルト４ａの頭部４１をフロアパネル１の角部Ｃ近傍の外表面に取着してこの部分をマスキングした状態でフロアパネル１の外表面に塗装を施すものである。このようにすることで、ねじ部材４の頭部４１をフロアパネル１の外表面に取着してマスキングして塗装するだけでこの頭部４１と同面積の非塗装部分を容易に形成することができる。
【００３９】
支柱２には、支柱側導通部が形成されるものであるが、本実施形態においては、支柱２を構成する台座部２１，柱脚部２２，受け部２３はいずれも金属製である上に、支柱２の外表面に非導電性の塗料等は塗装されないため、パネル側導通部３のような非塗装部分を特に形成することなく支柱２全体を支柱側導通部とすることができる。そして、この支柱２とフロアパネル１とを電気的に導通させるため、フロアパネル１の四つの角部Ｃに形成したパネル側導通部３には導電性部材５ａがそれぞれ取り付けられる。
【００４０】
導電性部材５ａは、図２（ｂ）に示すように、導電性を有する平板状の部材を二か所で屈曲させて、パネル側取着片５１とこれより一体に連設される側面視略へ字状をした支柱当接片５２とを形成したもので、ばね用りん青銅等の金属で成形される。パネル側取着片５１には、ねじ部材４が挿通される取着用切欠孔５１ａが穿設してある。この導電性部材５ａは、フロアパネル１と支柱２との間の隙間に合わせてこれらの両方に弾圧するように弾性変形するものである。
【００４１】
この導電性部材５ａをパネル側導通部３に取り付けるには、上述したようにねじ部材４としてのボルト４ａとナット４２を螺着した後トップ板１１とボトム板１２とを溶接してフロアパネル１の外殻を構成し、この内部に充填材７としてのモルタルを充填してナット４２を固定し、この状態でボルト４ａを回転させてナット４２に螺着してあるボルト４ａを外すかあるいは緩め、導電性部材５ａのパネル側取着片５１に穿設した取着用切欠孔５１ａにボルト４ａを挿通し、再度ボルト４ａをナット４２に螺着してボルト４ａの頭部４１とフロアパネル１のパネル側導通部３とで導電性部材５ａのパネル側取着片５１を挟着することで行うものである。なおこの時、ナット４２は円形よりも六角形等の多角形状をしたものの方がモルタルによって固定される効果が大きい。
【００４２】
そして、このように導電性部材５ａを取り付けたフロアパネル１を支柱２に載置することで、図１に示すように、導電性部材５ａの支柱当接片５２が支柱側導通部に当接してフロアパネル１と支柱２とが電気的に導通される。
【００４３】
以上のような構成によれば、パネル側導通部３と支柱側導通部との間に金属製のねじ部材４及び導電性部材５ａを設けてフロアパネル１と支柱２とをアース接続したことで、コーナーロックねじ６３のようなアース部材を現場で施工する必要がなくなり、現場で施工する際に要するコーナーロックねじ６３のような部材やこれを取り付けるための工具の点数、施工の工数の低減が図られるものである。特に、フロアパネル１を支柱２に載置するという基本的な作業を行うだけで、簡単に電気的な導通が得られるようになるものである。
【００４４】
また、幾度もフロアパネル１を支柱２に載置し直す時でも、コーナーロックねじ６３を用いるものの場合のように何度もコーナーロックねじ６３を着脱することによる支柱２の受け部２３のねじ孔６４の緩みによって電気的導通が不確実になることがないと共に、コーナーロックねじ６３のねじ孔６４への締め付けトルクの変動によって電気的導通の抵抗値にばらつきが生じることもないものである。
【００４５】
また、導電性部材５ａをねじ部材４にてフロアパネル１のパネル側導通部３に取り付け、導電性部材５ａを弾性変形させて支柱側導通部に弾圧したことで、導電性部材５ａがフロアパネル１のパネル側導通部３と支柱側導通部とに確実に当接するものである。
【００４６】
また、パネル側導通部３をフロアパネル１の側面１ｂに形成したことで、パネル側導通部３に取り付けられるねじ部材４が歩行者がフロアパネル１を踏むことによる繰り返し垂直負荷によって緩むのを防止することができると共に、複数のフロアパネル１を積段した状態でねじ部材４を取り付けることができて作業性が向上するものである。
【００４７】
また、ねじ部材４としてのボルト４ａをフロアパネル１の外側よりフロアパネル１の内側に配設してあるナット４２に螺着し、ボルト４ａの頭部４１をフロアパネル１の外表面に取着してマスキングした状態でフロアパネル１の外表面に塗装を施して、パネル側導通部３としての非塗装部分をマスキングした部分に形成したことで、フロアパネル１と支柱２とをアース接続すると共にマスキング部材ともなるねじ部材４を容易にフロアパネル１の角部Ｃ近傍の外表面に取着することができて、フロアパネル１の製造工程や現場でのアース接続の施工工数を低減することができる。
【００４８】
また、なお、本実施形態ではフロアパネル１の四つの角部Ｃ全てにパネル側導通部３としての非塗装部分を形成したが、三か所以下であっても少なくとも一か所に形成してあれば電気的導通を得ることは可能である。しかしながらこの場合にあっては、フロアパネル１の配置に制限が加わるものであるため、パネル側導通部３としての非塗装部分はフロアパネル１の四つの角部Ｃ全てに形成することが好ましい。
【００４９】
次に、本発明の他の実施形態について、図３に基づいて説明する。本実施形態は、図１及び図２に示す上実施形態と基本的に同じであるため、主に異なる部分についてのみ説明する。
【００５０】
本実施形態は、上実施形態においてフロアパネル１の側面１ｂに貫通孔を穿孔してねじ部材４としてのボルト４ａを外側より挿通すると共にナット４２をボトム板１２の内側よりボルト４ａに螺着するところを、ねじ部材４としてのボルト４ａと螺合するねじ孔１５をフロアパネル１に形成してこのねじ孔１５にボルト４ａを外側より螺着するようにしたものである。
【００５１】
これは、パネル側導通部３としての非塗装部分を形成するにあたり、フロアパネル１の製造の段階において、トップ板１１とボトム板１２とを溶接する前にフロアパネル１の四つの角部Ｃ近傍の側面１ｂにそれぞれ、図３に示すように、ねじ部材４としての外周に雄ねじが刻設されたボルト４ａと螺合するねじ孔１５を穿設し、このねじ孔１５に前記ねじ部材４としてのボルト４ａを外側より螺着し、その後でトップ板１１とボトム板１２とを溶接し、ボルト４ａの頭部４１をフロアパネル１の角部Ｃ近傍の外表面に取着してこの部分をマスキングした状態でフロアパネル１の外表面に塗装を施すものである。
【００５２】
以上のような構成によれば、マスキング部材として用いるねじ部材４を容易にフロアパネル１の角部Ｃ近傍の外表面に取着することができて、フロアパネル１の製造工程や現場でのアース接続の施工工数を更に低減することができる。
【００５３】
次に、本発明の更に他の実施形態について、図４乃至図６に基づいて説明する。本実施形態は、図１及び図２や、図３に示す上実施形態と基本的に同じであるため、主に異なる部分についてのみ説明する。
【００５４】
本実施形態は、上実施形態のようにフロアパネル１の外表面にねじ部材４を取着してマスキングした状態でフロアパネル１の外表面に塗装を施してマスキングした部分をパネル側導通部３としての非塗装部分とするものではなく、ねじ部材４としての掘削ねじ４ｂで外表面に塗装が施されたフロアパネル１に掘削螺入し、この掘削ねじ４ｂとフロアパネル１とで導電性部材５ｂを挟着し、導電性部材５ｂに設けた塗装剥離部でフロアパネル１の塗装を剥離してパネル側導通部３としての非塗装部分を形成するものである。
【００５５】
ねじ部材４としての掘削ねじ４ｂには、一般によく用いられるタッピングねじを用いるが、特にこれに限定されないものである。
【００５６】
また、導電性部材５ｂは、図４乃至図６に示すように、上実施形態で用いるもの（図１乃至図３参照）に加えて、フロアパネル１に取り付ける際にフロアパネル１のボトム板１２の下面１ｃに当接することでねじ部材４と共に回転してしまうのを防止する規制部５３がパネル側取着片５１の下端より一体に連設してあると共に、パネル側取着片５１のフロアパネル１との当接面にフロアパネル１の塗装を剥離する塗装剥離部（特に図示せず）が形成してある。
【００５７】
塗装剥離部は、フロアパネル１の外表面に施してある塗装を剥離する突起として形成されるもので、パネル側取着片５１の取着用切欠孔５１ａに掘削ねじ４ｂを挿通して掘削ねじ４ｂをフロアパネル１の側面１ｂ（即ちボトム板１２の側面）に掘削螺入していき、掘削ねじ４ｂによってパネル側取着片５１がフロアパネル１の外表面に圧接され、パネル側取着片５１が掘削ねじ４ｂの回転等の動きと同じように若干左右へ回転，揺動した際に、塗装剥離部の突起がフロアパネル１の外表面の塗装を剥離してパネル側導通部３としての非塗装部分を形成するものである。
【００５８】
以上のような構成によれば、ナット４２を用いたりねじ孔１５を形成したりすることなくねじ部材４をフロアパネル１の角部Ｃ近傍の外表面に取り付けることができると共に、ねじ部材４でフロアパネル１の外表面をマスキングすることなく塗装後にパネル側導通部３を形成することができる。
【００５９】
次に、本発明の更に他の実施形態について、図７乃至図１０に基づいて説明する。本実施形態は、図１及び図２や、図３や、図４乃至図６に示す上実施形態と異なる部分についてのみ説明する。
【００６０】
本実施形態は、上実施形態のようにフロアパネル１の角部Ｃ近傍の側面１ｂにねじ部材４にて導電性部材５ｂを取り付けるものではなく、フロアパネル１の角部Ｃ近傍の下面１ｃにねじ部材４を取り付けると共に、導電性部材５ｃを支柱２のフロアパネル１が載置される部分に取り付けるものである。
【００６１】
ねじ部材４としての掘削ねじ４ｂには、一般によく用いられるタッピングねじを用いるが、特にこれに限定されないものである。さらに本実施形態では、掘削ねじ４ｂにフロアパネル１の塗装を剥離する塗装剥離部（特に図示せず）が設けてある。これは、掘削ねじ４ｂの頭部４１のフロアパネル１との当接面にフロアパネル１の塗装を剥離する突起として形成されるもので、掘削ねじ４ｂをフロアパネル１に掘削螺入して掘削ねじ４ｂの頭部４１がフロアパネル１の外表面に圧接された際、塗装剥離部の突起がフロアパネル１の外表面の塗装を剥離してパネル側導通部３としての非塗装部分を形成するものである。このようなねじ部材４は、図８に示すように、フロアパネル１（即ちボトム板１２）の角部Ｃ近傍の下面１ｃの支柱２のパネル載置部２４ｂに配置される部分に取り付けられる。
【００６２】
支柱２に載置される導電性部材５ｃは、本実施形態においては図９，図１０等に示すような略板状のもので、支柱２の受け部２３の立設部２５が挿通される平面視略十字状をした挿通孔５４が穿孔されると共に、受け部本体２４のパネル載置部２４ｂのねじ孔６４に対応する貫通孔５５が穿孔され、受け部本体２４のパネル載置部２４ｂに当接する下面に向けて弾性脚部５６が設けられる。
【００６３】
このような導電性部材５ｃを支柱２の立設部２５を挿通孔５４に挿通して受け部本体２４のパネル載置部２４ｂに載置し、下面１ｃにねじ部材４を取り付けたフロアパネル１を支柱２の受け部２３に載置することで、図７に示すように、支柱２に当接する導電性部材５ｃとフロアパネル１のパネル側導通部３に取り付けられたねじ部材４とが当接し、支柱２とフロアパネル１とを電気的に導通させることができる。
【００６４】
以上のような構成によれば、導電性部材５ｃをねじ部材４で取り付けることなく取り付け可能となって施工が容易となるものである。
【００６５】
また、ねじ部材４をフロアパネル１の下面１ｃに取り付けてパネル側導通部３をフロアパネル１の下面１ｃに形成すると共に、支柱２の受け部２３に載置した導電性部材５ｃの上にフロアパネル１を載置してあり、弾性脚部５６だけでなく略板状をした導電性部材５ｃ本体も弾性を有して弾性変形するため、フロアパネル１に取り付けられるねじ部材４をフロアパネル１の自重で導電性部材５ｃに圧接することができる。
【００６６】
また、ねじ部材４としての掘削ねじ４ｂに塗装剥離部を設けたことで、ナット４２を用いたりねじ孔１５を形成したりすることなくねじ部材４をフロアパネル１の角部Ｃ近傍の外表面に取り付けることができ、これと同時にパネル側導通部３を形成することができる。
【００６７】
次に、本発明の更に他の実施形態について、図１１乃至図１３に基づいて説明する。本実施形態は、図１及び図２や、図３や、図４乃至図６に示す上実施形態と異なる部分についてのみ説明する。
【００６８】
本実施形態は、図１乃至図６に示す上実施形態のようにフロアパネル１の角部Ｃ近傍の側面１ｂにねじ部材４にて導電性部材５を取り付けるものではなく、フロアパネル１の角部Ｃ近傍の下面１ｃにねじ部材４にて導電性部材５ｄを取り付けるものである。
【００６９】
ねじ部材４としての掘削ねじ４ｂには、一般によく用いられるタッピングねじを用いるが、特にこれに限定されないものである。
【００７０】
また、導電性部材５ｄは、図１乃至図３に示す上実施形態のものと同様にパネル側取着片５１とこれより一体に連設される側面視略へ字状をした支柱当接片５２とで形成される上に、パネル側取着片５１のフロアパネル１との当接面にフロアパネル１の塗装を剥離する塗装剥離部（特に図示せず）が形成してある。
【００７１】
塗装剥離部は、フロアパネル１の外表面に施してある塗装を剥離する突起として形成されるもので、パネル側取着片５１の取着用切欠孔５１ａに掘削ねじ４ｂを挿通して掘削ねじ４ｂをフロアパネル１の下面１ｃ（即ちボトム板１２の下面）に掘削螺入していき、掘削ねじ４ｂによってパネル側取着片５１がフロアパネル１の外表面に圧接された際、パネル側取着片５１の塗装剥離部の突起がフロアパネル１の外表面の塗装を剥離してパネル側導通部３としての非塗装部分を形成するものである。このような導電性部材５ｄ及びねじ部材４は、図１２に示すように、フロアパネル１（即ちボトム板１２）の角部Ｃ近傍の下面１ｃの支柱２に配置される部分に取り付けられる。
【００７２】
このように下面１ｃにねじ部材４にて導電性部材５ｄを取り付けたフロアパネル１を支柱２の受け部２３に載置することで、図１１に示すように、導電性部材５ｄと支柱２とを当接させてフロアパネル１と支柱２とを電気的に導通させることができる。
【００７３】
以上のような構成によれば、ナット４２を用いたりねじ孔１５を形成したりすることなくねじ部材４をフロアパネル１の角部Ｃ近傍の外表面に取り付けることができると共に、ねじ部材４でフロアパネル１の外表面をマスキングすることなく塗装後にパネル側導通部３を形成することができる。また、フロアパネル１の下面１ｃにねじ部材４にて導電性部材５ｄを取り付けたことで、導電性部材５ｄをフロアパネル１の自重で支柱２に圧接することができる。
【００７４】
またこの時、図１３に示すように、ねじ部材４で取り付けられる導電性部材５とフロアパネル１との間に補助部材８を介在させてもよい。補助部材８は、金属等の導電性を有する材料で形成される弾性部材で、ねじ部材４によって導電性部材５とフロアパネル１との間に挟着された際に導電性部材５の支柱当接片５２に圧接するもので、導電性部材５の弾性変形の変形回復を補助するものである。
【００７５】
また、特に図示はしないが、補助部材８を用いる代わりに導電性部材５を２つ重ねて取り付けても補助部材８を取り付けたのと同様の効果が得られるものである。
【００７６】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、外表面に非導電性の塗装が施される金属製のフロアパネルと、該フロアパネルの縁鍔部の角部を支持する金属製の支柱とに設けるフロアパネルと支柱のアース接続構造であって、支柱に、平面視正方形状の略板状をした受け部本体と、受け部本体の上面を四つの略正方形の区画に分割するように該上面に突設されて前記それぞれの区画に配置されるフロアパネルの縁鍔部の角部が載置される平面視略十字状をした立設部とからなる受け部を形成し、フロアパネルの縁鍔部の角部近傍の下面にパネル側導通部としての非塗装部分を形成し、フロアパネルの縁鍔部の角部が載置される支柱に前記パネル側導通部と電気的に導通可能な支柱側導通部を形成し、フロアパネルのパネル側導通部と支柱の支柱側導通部との間に、フロアパネルと支柱とを電気的に導通させるためにパネル側導通部に取り付ける金属製のねじ部材及び、ねじ部材と支柱側導通部とに当接して弾性を有すると共に立設部が挿通される平面視略十字状をした挿通孔が穿孔されて受け部本体の立設部を立設していない部分であるパネル載置部に載置される導電性部材とを設けたので、フロアパネルと支柱とをアース接続するのにコーナーロックねじのようなアース部材を現場で施工する必要がなくなり、現場施工で要する部品（部材や工具）点数，施工工数の低減が図られるものである。特に、フロアパネルを支柱に載置するという基本的な作業を行うだけで、簡単に電気的な導通が得られるようになるものである。また、コーナーロックねじを用いるもののように何度もコーナーロックねじを着脱することによるねじの緩みによって電気的導通が不確実になってしまったり、コーナーロックねじの締め付けトルクの変動によって電気的導通の抵抗値にばらつきが生じてしまうといったこともないものである。また、導電性部材をねじ部材で取り付けることなく、その挿通孔に支柱の立設部を挿通させて支柱の受け部本体のパネル載置部に載置するだけで取り付け可能となって施工が容易であり、また、フロアパネルの下面に取り付けたねじ部材を支柱の受け部に載置した導電性部材の上にフロアパネルの自重で圧接することができる。
【００８５】
また請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、ねじ部材をタッピングねじ等の掘削ねじで構成すると共に、該掘削ねじにフロアパネルの塗装を剥離する塗装剥離部を設けたので、ナットを用いたりねじ孔を形成したりすることなくねじ部材をフロアパネルの角部近傍の外表面に取り付けると共にパネル側導通部を形成することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態の要部断面図である。
【図２】（ａ）は同上の実施形態における導電性部材の取り付け箇所の断面図であり、（ｂ）は導電性部材の正面図である。
【図３】本発明の他の実施形態の要部断面図である。
【図４】本発明の更に他の実施形態の要部断面図である。
【図５】同上の実施形態の要部斜視図である。
【図６】同上の実施形態における導電性部材のフロアパネルへの取り付けについての説明図である。
【図７】本発明の更に他の実施形態の要部断面図である。
【図８】同上の実施形態におけるねじ部材のフロアパネルへの取り付けについての説明図である。
【図９】同上の実施形態における導電性部材の支柱への取り付けについての説明図である。
【図１０】同上の実施形態の導電性部材の断面図である。
【図１１】本発明の更に他の実施形態の要部断面図である。
【図１２】同上の実施形態における導電性部材のフロアパネルへの取り付けについての説明図である。
【図１３】同上の実施形態における補助部材の取り付けについての説明図である。
【図１４】フロアパネル及び支柱からなるシステムフロアの説明図である。
【図１５】ねじ部材と導電性部材のフロアパネルへの取り付け箇所を説明する説明図であり、（ａ）は上方よりフロアパネルを見た斜視図であり、（ｂ）は下方よりフロアパネルを見た斜視図である。
【図１６】ねじ部材のフロアパネルへの取り付け箇所を説明する下面図である。
【図１７】従来のフロアパネルと支柱のアース接続構造を説明する斜視図である。
【図１８】同上の要部断面図である。
【図１９】同上に用いるコーナーロックねじを示し、（ａ）は側面図であり、（ｂ）は平面図である。
【符号の説明】
１フロアパネル
２支柱
３パネル側導通部
４ねじ部材
５導電性部材
Ｃ角部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ground connection structure provided on a floor panel and a column of a double floor system.
[0002]
[Prior art]
In recent years, a double floor system is often used in which a pillar is placed on the upper surface of a floor floor of a building, and a floor panel is placed on the pillar to form a gap for wiring between the floor foundation and the floor panel. This will be explained below.
[0003]
As shown in FIG. 17, the floor panel 1 is a metal plate-like member having a square shape in plan view, and a non-conductive coating is applied to the outer surface. And the lower surfaces of the four corners of the floor panel 1 are respectively placed on the columns 2.
[0004]
The support column 2 is made of metal that is arranged on the upper surface of the floor floor of the office and on which the floor panel 1 is placed to form a gap for wiring between the floor floor and the floor panel 1. A receiving portion 23 on which 1 is placed is provided.
[0005]
By the way, in the double floor system in which the floor panel 1 is placed on the support column 2 in this way, the floor panel 1 and the support column 2 are electrically connected to each other by a corner lock screw 63, which will be described later, to form a ground connection. To do.
[0006]
A through hole 62 is formed in the floor panel 1 by drilling holes at four corners and attaching corner lock plugs, and a corner lock screw 63 is inserted into the through hole 62. When the floor panel 1 is placed on the column 2, the lower surfaces of the corners where the through holes 62 are formed are respectively positioned above the receiving portions 23 of the column 2.
[0007]
The receiving portion 23 is provided at the upper end portion of the column 2 and has a screw hole 64 formed so as to communicate with the through hole 62 of the floor panel 1 when the floor panel 1 is placed. Further, as shown in FIG. 19, the corner lock screw 63 is made of metal with a peeling portion H protruding to peel off the paint applied to the outer surface of the floor panel 1, and the corner lock screw 63 is used as a support column. 2 through the through hole 62 of the floor panel 1 placed on the floor 2 and screwed into the screw hole 64 of the receiving portion 23 of the support column 2, so that the floor panel 1 and the support column 2 are connected via the corner lock screw 63. Is electrically conducted.
[0008]
However, in the ground connection structure of the floor panel 1 and the column 2 using the corner lock screw 63 as described above, the corner lock screw 63 is attached after the floor panel 1 is placed on the column 2, that is, on site construction. There is a problem that not only the number of items brought into the site such as the corner lock screw 63 and tools used for tightening increases, but also the number of construction steps on site increases.
[0009]
Further, when the floor panel 1 is remounted on the support column 2 several times, the electrical conduction becomes uncertain due to the looseness of the screw hole 64 of the receiving portion 23 of the support column 2 by attaching and detaching the corner lock screw 63 many times. In addition, there is a problem in that the resistance value of electrical continuity varies due to fluctuations in the tightening torque of the corner lock screw 63 to the screw hole 64.
[0010]
[Problems to be solved by the invention]
  The present invention has been made in view of the above points, and the purpose thereof is to prevent an increase in the number of articles brought into the construction site, an increase in construction man-hours, etc. by using a corner lock screw. Ground connection between floor panel and columnProvide structureIt is an object to provide.
[0011]
[Means for Solving the Problems]
  In order to solve the above problems, a ground connection structure between a floor panel and a support according to the present invention includes a metal floor panel 1 having a non-conductive coating on the outer surface,Of the edge 13It is a ground connection structure between a floor panel 1 and a column 2 provided on a metal column 2 that supports a corner C,A support body 24 having a square plate shape in plan view and a top surface of the support body 24 are provided on the support 2 so as to be divided into four substantially square sections. Forming a receiving portion 23 composed of a standing portion 25 having a substantially cross shape in plan view on which a corner portion C of the edge flange portion 13 of the floor panel 1 to be placed is placed;Floor panel 1Of the edge 13Near corner CLower surface 1cThe non-painted part as the panel side conducting part 3 is formed on the floor panel 1Of the edge 13A column-side conductive portion that is electrically conductive with the panel-side conductive portion 3 is formed on the column 2 on which the corner portion C is placed, and the panel-side conductive portion 3 of the floor panel 1 and the column-side conductive portion of the column 2 are A metal screw member 4 attached to the panel-side conducting portion 3 to electrically connect the floor panel 1 and the support column 2 between, andScrew member 4Abuts against the column-side conductive partdo itHave elasticityIn addition, an insertion hole 54 having a substantially cross shape in plan view through which the standing portion 25 is inserted is bored and placed on the panel placement portion 24b which is a portion where the standing portion 25 of the receiving portion main body 24 is not raised. RuConductive member 5(5c)And is provided. By adopting such a configuration, it is not necessary to construct a grounding member such as the corner lock screw 63 on the site in order to connect the floor panel 1 and the column 2 to the ground, and parts (members and tools) required for the site construction. The number of points and construction man-hours can be reduced. In particular, electrical continuity can be easily obtained simply by performing the basic operation of placing the floor panel 1 on the support column 2. In addition, the resistance value of electrical continuity does not vary due to fluctuations in the tightening torque of the corner lock screw 63.Further, without attaching the conductive member 5 c with the screw member 4, the standing portion 25 of the support column 2 is inserted into the insertion hole 54 and is mounted on the panel mounting portion 24 b of the receiving portion main body 24 of the support column 2. The mounting is easy and the construction is easy, and the screw member 4 attached to the lower surface 1c of the floor panel 1 is pressed on the conductive member 5c placed on the receiving portion 23 of the column 2 by the weight of the floor panel 1 itself. can do.
[0020]
Further, it is preferable that the screw member 4 is constituted by a drilling screw 4b such as a tapping screw and a paint peeling portion for peeling the coating of the floor panel 1 is provided on the drilling screw 4b. With this configuration, the screw member 4 is attached to the outer surface in the vicinity of the corner C of the floor panel 1 without using the nut 42 or forming the screw hole 15, and the panel-side conducting portion 3 is formed. be able to.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the accompanying drawings. First, the floor panel 1 and the column 2 of the double floor system to which the ground connection structure of the floor panel 1 and the column 2 of the present invention is applied will be described.
[0030]
The floor panel 1 is a plate having a square shape in plan view, and the top plate 11 and the bottom plate 12 constitute an outer shell. (See FIG. 1, FIG. 2, FIG. 8, FIG. 15, etc.) The top plate 11 is a metal plate-like member having a square shape in plan view, and the upper surface is the upper surface 1a of the floor panel 1. The bottom plate 12 is a substantially box-shaped member that opens upward in a square shape in plan view, and has a flange-like portion that is continuously outward from the opening edge and whose outer shape is substantially the same as the outer shape of the top plate 11. The bottom plate 12 and the top plate 11 are welded so that the outlines overlap with each other in plan view. In this way, the top plate 11 and the bottom plate 12 are welded to form the outer shell of the floor panel 1. As described above, the upper surface of the top plate 11 becomes the upper surface 1 a of the floor panel 1 and the bottom plate 12. The side and bottom surfaces of the floor panel 1 are the side surface 1b and the bottom surface 1c of the floor panel 1, respectively. Further, as shown in FIG. 15 (b), a plurality of spherical concave portions 14 are formed on the lower surface 1 c of the floor panel 1 by bending the bottom plate 12.
[0031]
The outer shell of the floor panel 1 thus configured is filled with mortar as the filler 7 inside, thereby forming the floor panel 1, and further, the outer surface of the floor panel 1 (ie, The upper surface 1a, the side surface 1b, the lower surface 1c, and the upper and lower surfaces of the edge flange 13 (to be described later) are coated with a nonconductive paint for preventing rust. As shown in FIG. 1 and the like, the four corners C of the floor panel 1 are each drilled with holes so as to substantially overlap the top plate 11 and the bottom plate 12 in a plan view before filling with the filler 7. A through-hole 62 is formed by attaching a corner lock plug 61 to this hole, and a corner lock screw 63 described later can be inserted.
[0032]
As described above, the floor panel 1 is formed by welding the top plate 11 and the bottom plate 12 to form an outer shell. The flange-like portion of the bottom plate 12 and the peripheral portion of the top plate 11 welded to this portion. The edge flange 13 of the floor panel 1 is formed. The edge portion 13 has a square shape in plan view formed on the periphery of the floor panel 1, and the four corners C of the floor panel 1, that is, the four corner portions of the edge portion 13 are mounted on the column 2. Is to be placed.
[0033]
The column 2 is arranged on the upper surface of the floor base of the office and the floor panel 1 is placed on the upper end to form a gap for wiring between the floor base and the floor panel 1. The main body is composed of 21, the column base portion 22, and the receiving portion 23. (Refer to Fig.1, Fig.9, Fig.14, Fig.17 etc.)
As shown in FIG. 9 and the like, the pedestal portion 21 is a metal plate-like member that is directly placed on the upper surface of the floor base, and the column base portion 22 protrudes upward from the central portion of the upper surface. . In this embodiment, the column base portion 22 is composed of a metal bolt 22a and a nut 22b. The lower end portion of the bolt 22a is fixed to the pedestal portion 21 so as to protrude upward from the pedestal portion 21, and the bolt 22a A nut 22b is screwed to the upper end portion, and a receiving portion 23 described later is placed and fixed on the upper surface of the nut 22b. Since the column base portion 22 is configured in this way, the height of the receiving portion 23 placed by the nut 22b from the upper surface of the floor base is changed by rotating the nut 22b to change the screwing position to the bolt 22a. That is, the height of the floor panel 1 from the upper surface of the floor base can be adjusted.
[0034]
As shown in FIGS. 1 and 9, the receiving portion 23 is composed of a receiving portion main body 24 having a substantially square shape in a plan view made of metal and a standing portion 25 having a substantially cross shape in a plan view. It is what is done. The receiving portion main body 24 has a column base mounting portion 24a mounted on the upper surface of the nut 22b of the column base portion 22 on the lower surface, and the upper surface of the receiving portion main body 24 is substantially cross-shaped in plan view. A portion where the upright standing portion 25 is not projected is provided as a panel mounting portion 24b. The standing portion 25 is integrally provided on the upper surface of the receiving portion main body 24 so as to divide the upper surface of the receiving portion main body 24 having a square shape in plan view into four substantially square sections. Each section of the upper surface of 24 becomes a panel mounting portion 24b on which the corner portion C of the lower surface 1c of the bottom plate 12 of the floor panel 1 is mounted or disposed via a gap. Further, the upper end surface of the standing portion 25 serves as a collar placing portion 25a on which the lower surface of the edge collar portion 13 of the floor panel 1 is placed, and the four corners of the floor panel 1 are formed by one receiving portion 23. Part C can be placed. In the present embodiment, the panel mounting portion 24b of the receiving portion main body 24 is not in contact with and supported by the lower surface 1c of the floor panel 1 (that is, the lower surface of the bottom plate 12). The floor panel 1 is supported by being placed on the saddle placement portion 25a of the installation portion 25 via a rubber 26. Further, as shown in FIG. 9, the receiving portion 23 is provided with screw holes 64 into which the corner lock screws 63 are screwed into the panel mounting portions 24b formed in the receiving portion main body 24, respectively. When the corner portion C of the lower surface 1c of the bottom plate 12 of the floor panel 1 is disposed on the panel mounting portion 24b of the receiving portion 23, the through-holes of the corner lock plug 61 from the upper surface 1a side of the floor panel 1 The corner lock screw 63 inserted through 62 is screwed into the screw hole 64 of the panel mounting portion 24b of the column 2 so that the floor panel 1 is securely fixed to the column 2 or the floor panel 1 and the column 2 are electrically connected. Can be conducted.
[0035]
As shown in FIG. 14, such a support 2 is placed on the upper surface of an under floor of an office such as an office building or a computer building, and the floor panel 1 is placed on the placed support 2 and below the floor. A gap for wiring is formed between the ground and the floor panel. In the figure, 9 indicates a carpet.
[0036]
One embodiment of the ground connection structure of the present invention provided on the floor panel 1 and the column 2 as described above will be described with reference to FIGS.
[0037]
In the ground connection structure of the present embodiment, the panel-side conductive portion 3 is formed on the outer surface near the corner C of the floor panel 1 and the column-side conductive portion is formed on the column 2. The floor panel 1 and the column 2 are connected to the ground by attaching 5a with a metal screw member 4 and bringing the conductive member 5a into contact with the column side conducting portion.
[0038]
As shown in FIG. 1, the panel-side conductive portion 3 is formed on the side surface 1 b of the floor panel 1 (that is, the side surface of the bottom plate 12), and a non-conductive paint is not applied to the outer surface of the floor panel 1. A conductive portion is formed by forming a painted portion and enabling electrical continuity. In order to form the non-painted portion as the panel-side conductive portion 3, in the stage of manufacturing the floor panel 1, before the top plate 11 and the bottom plate 12 are welded, the four corners C of the floor panel 1 are in the vicinity. A through hole (not shown) is drilled in the side surface 1b, and a bolt 42a having a male screw engraved on the outer periphery as a screw member 4 is inserted into the through hole from the outside, and a nut 42 screwed with the bolt 4a is inserted. Screw on the bolt 4a from the inside of the bottom plate 12, then weld the top plate 11 and the bottom plate 12, and attach the head 41 of the bolt 4a to the outer surface near the corner C of the floor panel 1. A coating is applied to the outer surface of the floor panel 1 with this portion masked. By doing in this way, the non-painting part of the same area as this head 41 can be easily formed only by attaching the head 41 of the screw member 4 to the outer surface of the floor panel 1 and masking and painting. Can do.
[0039]
The column 2 is formed with a column-side conductive portion. In the present embodiment, the pedestal 21, the column base 22, and the receiving unit 23 constituting the column 2 are all made of metal. Since the non-conductive paint or the like is not applied to the outer surface of the support column 2, the entire support column 2 can be used as the support-side conductive unit without particularly forming a non-painted portion such as the panel-side conductive unit 3. And in order to electrically connect this support | pillar 2 and the floor panel 1, the electroconductive member 5a is attached to the panel side conduction | electrical_connection part 3 formed in the four corner | angular parts C of the floor panel 1, respectively.
[0040]
As shown in FIG. 2 (b), the conductive member 5a is formed by bending a conductive flat plate member at two locations so as to be integrally connected to the panel-side attachment piece 51. A substantially abbreviated column contact piece 52 is formed, and is formed of a metal such as phosphor bronze for a spring. The panel-side mounting piece 51 has a mounting notch hole 51a through which the screw member 4 is inserted. The conductive member 5a is elastically deformed so as to be elastically pressed to both according to the gap between the floor panel 1 and the support column 2.
[0041]
In order to attach the conductive member 5a to the panel-side conductive portion 3, as described above, the bolt 4a serving as the screw member 4 and the nut 42 are screwed together, and then the top plate 11 and the bottom plate 12 are welded to form the floor panel 1. A mortar as a filler 7 is filled into the outer shell, and the nut 42 is fixed. In this state, the bolt 4a is rotated to remove or loosen the bolt 4a screwed to the nut 42. The bolt 4a is inserted into the mounting notch hole 51a formed in the panel-side mounting piece 51 of the conductive member 5a, and the bolt 4a is screwed to the nut 42 again, so that the head 41 of the bolt 4a and the floor panel 1 are This is performed by sandwiching the panel-side attachment piece 51 of the conductive member 5a with the panel-side conducting portion 3. At this time, the nut 42 having a polygonal shape such as a hexagonal shape has a greater effect of being fixed by the mortar than the circular shape.
[0042]
Then, by placing the floor panel 1 to which the conductive member 5a is attached in this manner on the column 2, as shown in FIG. 1, the column contact piece 52 of the conductive member 5a contacts the column side conducting portion. Thus, the floor panel 1 and the column 2 are electrically connected.
[0043]
According to the configuration as described above, the metal screw member 4 and the conductive member 5a are provided between the panel-side conductive portion 3 and the column-side conductive portion, and the floor panel 1 and the column 2 are grounded. It is no longer necessary to install a grounding member such as the corner lock screw 63 on site, and the number of members and tools for attaching the member such as the corner lock screw 63 required for installation on the site and the number of construction steps can be reduced. It is intended. In particular, electrical continuity can be easily obtained simply by performing the basic operation of placing the floor panel 1 on the support column 2.
[0044]
Further, even when the floor panel 1 is remounted on the support column 2 several times, the screw hole of the receiving portion 23 of the support column 2 can be removed by attaching and detaching the corner lock screw 63 many times as in the case of using the corner lock screw 63. The looseness of 64 does not cause uncertain electrical conduction, and fluctuations in the tightening torque to the screw hole 64 of the corner lock screw 63 do not cause variations in the resistance value of electrical conduction.
[0045]
Further, the conductive member 5a is attached to the panel-side conducting portion 3 of the floor panel 1 with the screw member 4, and the conductive member 5a is elastically deformed and elastically pressed to the support-side conducting portion, so that the conductive member 5a becomes the floor panel. The panel-side conducting portion 3 and the column-side conducting portion 1 are surely brought into contact with each other.
[0046]
Further, by forming the panel-side conductive portion 3 on the side surface 1b of the floor panel 1, the screw member 4 attached to the panel-side conductive portion 3 is prevented from being loosened due to repeated vertical loads caused by the pedestrian stepping on the floor panel 1. In addition, the screw member 4 can be attached in a state where the plurality of floor panels 1 are stacked, so that workability is improved.
[0047]
Further, the bolt 4a as the screw member 4 is screwed to the nut 42 disposed inside the floor panel 1 from the outside of the floor panel 1, and the head 41 of the bolt 4a is attached to the outer surface of the floor panel 1. In the masked state, the outer surface of the floor panel 1 is painted, and the non-painted portion as the panel-side conductive portion 3 is formed in the masked portion, so that the floor panel 1 and the column 2 are grounded. The screw member 4 also serving as a masking member can be easily attached to the outer surface in the vicinity of the corner C of the floor panel 1, and the manufacturing process of the floor panel 1 and the ground connection construction man-hour can be reduced. it can.
[0048]
Further, in this embodiment, the non-painted portion as the panel side conductive portion 3 is formed in all four corners C of the floor panel 1, but it is formed in at least one place even if there are three or less. If there is, it is possible to obtain electrical continuity. However, in this case, since the arrangement of the floor panel 1 is limited, it is preferable that the non-painted portion as the panel-side conductive portion 3 is formed at all four corners C of the floor panel 1.
[0049]
Next, another embodiment of the present invention will be described with reference to FIG. Since the present embodiment is basically the same as the upper embodiment shown in FIGS. 1 and 2, only different parts will be mainly described.
[0050]
In this embodiment, a through hole is drilled in the side surface 1b of the floor panel 1 in the above embodiment, and a bolt 4a as a screw member 4 is inserted from the outside, and a nut 42 is screwed to the bolt 4a from the inside of the bottom plate 12. However, a screw hole 15 to be screwed with a bolt 4a as the screw member 4 is formed in the floor panel 1, and the bolt 4a is screwed into the screw hole 15 from the outside.
[0051]
This is because, in forming the non-painted portion as the panel-side conductive portion 3, before the top plate 11 and the bottom plate 12 are welded in the stage of manufacturing the floor panel 1, the vicinity of the four corners C of the floor panel 1 As shown in FIG. 3, each of the side surfaces 1 b is formed with a screw hole 15 that engages with a bolt 4 a that is engraved with a male screw on the outer periphery of the screw member 4. The top plate 11 and the bottom plate 12 are welded from the outside, and then the head 41 of the bolt 4a is attached to the outer surface near the corner C of the floor panel 1 to attach this portion. The outer surface of the floor panel 1 is painted in a masked state.
[0052]
According to the above configuration, the screw member 4 used as the masking member can be easily attached to the outer surface in the vicinity of the corner C of the floor panel 1, and the floor panel 1 manufacturing process and grounding in the field can be performed. Connection man-hours can be further reduced.
[0053]
Next, still another embodiment of the present invention will be described with reference to FIGS. Since this embodiment is basically the same as the above-described embodiment shown in FIGS. 1 and 2 and FIG. 3, only different parts will be mainly described.
[0054]
In the present embodiment, as in the above embodiment, the screw member 4 is attached to the outer surface of the floor panel 1 and masked, and the masked portion of the outer surface of the floor panel 1 is coated and masked. It is not intended to be a non-painted part as a screw, but is screwed into a floor panel 1 whose outer surface is coated with a drilling screw 4b as a screw member 4, and the conductive member is connected with the drilling screw 4b and the floor panel 1 5b is sandwiched, and the paint on the floor panel 1 is peeled off at the paint peeling portion provided on the conductive member 5b to form a non-painted portion as the panel side conducting portion 3.
[0055]
As the excavation screw 4b as the screw member 4, a tapping screw that is generally used is used, but is not particularly limited thereto.
[0056]
Further, as shown in FIGS. 4 to 6, the conductive member 5 b is used in the above embodiment (see FIGS. 1 to 3), and when attached to the floor panel 1, the bottom plate 12 of the floor panel 1 is used. A restricting portion 53 that prevents rotation with the screw member 4 by abutting against the lower surface 1c of the panel side is integrally connected from the lower end of the panel side mounting piece 51, and the floor of the panel side mounting piece 51 A paint peeling portion (not shown) for peeling the paint on the floor panel 1 is formed on the contact surface with the panel 1.
[0057]
The paint peeling portion is formed as a protrusion for peeling the paint applied to the outer surface of the floor panel 1, and the excavation screw 4 b is inserted into the attachment cutout hole 51 a of the panel side attachment piece 51. Is drilled into the side surface 1b of the floor panel 1 (that is, the side surface of the bottom plate 12), and the panel side mounting piece 51 is pressed against the outer surface of the floor panel 1 by the drilling screw 4b. Is slightly rotated to the left and right in the same manner as the movement of the excavating screw 4b, etc., and the protrusion of the paint peeling part peels off the paint on the outer surface of the floor panel 1 and the non-panel side conduction part 3 It forms a painted part.
[0058]
According to the above configuration, the screw member 4 can be attached to the outer surface near the corner portion C of the floor panel 1 without using the nut 42 or forming the screw hole 15. The panel-side conducting portion 3 can be formed after painting without masking the outer surface of the floor panel 1.
[0059]
Next, still another embodiment of the present invention will be described with reference to FIGS. In the present embodiment, only the parts different from those in the upper embodiment shown in FIGS. 1 and 2, FIG. 3, and FIGS. 4 to 6 will be described.
[0060]
In the present embodiment, the conductive member 5b is not attached to the side surface 1b in the vicinity of the corner C of the floor panel 1 with the screw member 4 as in the above embodiment, but the lower surface 1c in the vicinity of the corner C of the floor panel 1 is attached. While attaching the screw member 4, the electroconductive member 5c is attached to the part in which the floor panel 1 of the support | pillar 2 is mounted.
[0061]
As the excavation screw 4b as the screw member 4, a tapping screw that is generally used is used, but is not particularly limited thereto. Furthermore, in this embodiment, the paint stripping part (not shown) for stripping the paint on the floor panel 1 is provided on the excavation screw 4b. This is formed as a protrusion that peels off the paint on the floor panel 1 on the contact surface of the head 41 of the excavating screw 4b with the floor panel 1, and excavating by excavating the excavating screw 4b into the floor panel 1 When the head 41 of the screw 4b is pressed against the outer surface of the floor panel 1, the protrusion of the paint peeling part peels off the paint on the outer surface of the floor panel 1 to form a non-painted part as the panel-side conductive part 3. Is. As shown in FIG. 8, such a screw member 4 is attached to a portion of the floor panel 1 (that is, the bottom plate 12) that is disposed on the panel mounting portion 24 b of the column 2 on the lower surface 1 c in the vicinity of the corner portion C.
[0062]
In this embodiment, the conductive member 5c placed on the support column 2 is substantially plate-shaped as shown in FIGS. 9 and 10 and the like, and the standing portion 25 of the receiving portion 23 of the support column 2 is inserted. An insertion hole 54 having a substantially cross shape in plan view is drilled, and a through hole 55 corresponding to the screw hole 64 of the panel mounting portion 24b of the receiving portion main body 24 is punched, so that the panel mounting portion 24b of the receiving portion main body 24 is formed. The elastic leg part 56 is provided toward the lower surface which contacts.
[0063]
The floor panel 1 in which the conductive member 5c is placed on the panel placing portion 24b of the receiving portion main body 24 through the standing portion 25 of the support column 2 through the insertion hole 54, and the screw member 4 is attached to the lower surface 1c. 7 is placed on the receiving portion 23 of the support 2 so that the conductive member 5c contacting the support 2 and the screw member 4 attached to the panel-side conducting portion 3 of the floor panel 1 are contacted as shown in FIG. The support 2 and the floor panel 1 can be electrically connected to each other.
[0064]
According to the above configuration, the conductive member 5c can be attached without being attached by the screw member 4, and the construction is facilitated.
[0065]
Further, the screw member 4 is attached to the lower surface 1c of the floor panel 1 to form the panel side conductive portion 3 on the lower surface 1c of the floor panel 1, and the floor is placed on the conductive member 5c placed on the receiving portion 23 of the support column 2. Since the panel 1 is mounted and the main body of the conductive member 5c having a substantially plate shape as well as the elastic legs 56 is elastically deformed, the screw member 4 attached to the floor panel 1 is attached to the floor panel 1. It is possible to press the conductive member 5c by its own weight.
[0066]
Further, by providing the paint peeling portion on the excavation screw 4b as the screw member 4, the screw member 4 can be attached to the outer surface near the corner C of the floor panel 1 without using the nut 42 or forming the screw hole 15. At the same time, the panel-side conductive portion 3 can be formed.
[0067]
Next, still another embodiment of the present invention will be described with reference to FIGS. In the present embodiment, only the parts different from those in the upper embodiment shown in FIGS. 1 and 2, FIG. 3, and FIGS. 4 to 6 will be described.
[0068]
In the present embodiment, the conductive member 5 is not attached to the side surface 1b in the vicinity of the corner C of the floor panel 1 with the screw member 4 as in the upper embodiment shown in FIGS. The conductive member 5d is attached to the lower surface 1c in the vicinity of the portion C by the screw member 4.
[0069]
As the excavation screw 4b as the screw member 4, a tapping screw that is generally used is used, but is not particularly limited thereto.
[0070]
In addition, the conductive member 5d is a column abutting piece having a substantially square shape in side view, which is integrally connected to the panel side mounting piece 51, as in the above embodiment shown in FIGS. In addition, a paint peeling portion (not shown) for peeling the paint on the floor panel 1 is formed on the contact surface of the panel-side mounting piece 51 with the floor panel 1.
[0071]
The paint peeling portion is formed as a protrusion for peeling the paint applied to the outer surface of the floor panel 1, and the excavation screw 4 b is inserted into the attachment cutout hole 51 a of the panel side attachment piece 51. Is excavated and screwed into the lower surface 1c of the floor panel 1 (ie, the lower surface of the bottom plate 12), and the panel side attachment piece 51 is pressed against the outer surface of the floor panel 1 by the excavation screw 4b. The projection of the paint peeling portion of the piece 51 peels off the coating on the outer surface of the floor panel 1 to form a non-painted portion as the panel side conductive portion 3. As shown in FIG. 12, the conductive member 5d and the screw member 4 are attached to a portion of the floor panel 1 (that is, the bottom plate 12) that is disposed on the column 2 of the lower surface 1c near the corner C.
[0072]
By placing the floor panel 1 having the conductive member 5d attached to the lower surface 1c with the screw member 4 on the receiving portion 23 of the support column 2 in this manner, as shown in FIG. Can be brought into contact with each other to electrically connect the floor panel 1 and the column 2.
[0073]
According to the above configuration, the screw member 4 can be attached to the outer surface near the corner portion C of the floor panel 1 without using the nut 42 or forming the screw hole 15. The panel-side conducting portion 3 can be formed after painting without masking the outer surface of the floor panel 1. In addition, by attaching the conductive member 5d to the lower surface 1c of the floor panel 1 with the screw member 4, the conductive member 5d can be pressed against the support column 2 by its own weight.
[0074]
At this time, as shown in FIG. 13, an auxiliary member 8 may be interposed between the conductive member 5 attached by the screw member 4 and the floor panel 1. The auxiliary member 8 is an elastic member formed of a conductive material such as a metal, and when the auxiliary member 8 is sandwiched between the conductive member 5 and the floor panel 1 by the screw member 4, It is in pressure contact with the contact piece 52 and assists in recovery of deformation of the elastic deformation of the conductive member 5.
[0075]
Although not shown in particular, even if two conductive members 5 are attached in a stacked manner instead of using the auxiliary member 8, the same effect as that obtained when the auxiliary member 8 is attached can be obtained.
[0076]
【The invention's effect】
  As described above, in the first aspect of the present invention, a metal floor panel having a non-conductive coating on the outer surface, and the floor panelRimIt is a ground connection structure of a floor panel and a column provided on a metal column supporting a corner,A support body having a substantially plate shape with a square shape in plan view and a top surface of the support body are projected on the upper surface so as to be divided into four substantially square sections, and are arranged in the respective sections. Forming a receiving portion composed of an upright portion having a substantially cross shape in plan view on which the corner portion of the edge portion of the floor panel is placed;Floor panelRimNear the cornerBottomA non-painted part as a panel side conductive part is formed on the floor panel.RimA column-side conductive portion that is electrically conductive with the panel-side conductive portion is formed on the column on which the corner is placed, and the floor panel is interposed between the panel-side conductive portion of the floor panel and the column-side conductive portion of the column. A metal screw member attached to the panel-side conducting portion to electrically connect the column and the column; andScrew memberAbuts against the column-side conductive partdo itHave elasticityIn addition, an insertion hole having a substantially cross shape in plan view through which the standing portion is inserted is drilled and placed on the panel placement portion which is a portion where the standing portion of the receiving body is not raised.Since conductive members are provided, it is no longer necessary to install grounding members such as corner lock screws on the site to connect the floor panel and the column to the ground, and the number of parts (members and tools) required for site construction and construction Man-hours can be reduced. In particular, it is possible to easily obtain electrical continuity simply by performing a basic operation of placing the floor panel on a support column. In addition, electrical continuity may become uncertain due to loosening of the screws by attaching and detaching the corner lock screws many times, such as those using corner lock screws, or electrical continuity may be affected by fluctuations in the tightening torque of the corner lock screws. The resistance value does not vary.Also, without attaching the conductive member with a screw member, it is possible to install it simply by inserting the upright part of the column into the insertion hole and placing it on the panel mounting part of the column receiving part body. In addition, the screw member attached to the lower surface of the floor panel can be pressed against the conductive member placed on the receiving portion of the support column by the weight of the floor panel.
[0085]
  And claims2In the described invention, the above claims1In addition to the effects of the described invention, the screw member is constituted by a drilling screw such as a tapping screw and a paint peeling portion for peeling the paint on the floor panel is provided on the drilling screw, so that a nut or a screw hole is formed. Without attaching, the screw member can be attached to the outer surface near the corner of the floor panel and the panel-side conducting portion can be formed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of an embodiment of the present invention.
FIG. 2A is a cross-sectional view of a conductive member attachment location in the embodiment, and FIG. 2B is a front view of the conductive member.
FIG. 3 is a cross-sectional view of a main part of another embodiment of the present invention.
FIG. 4 is a cross-sectional view of a main part of still another embodiment of the present invention.
FIG. 5 is a perspective view of a main part of the embodiment.
FIG. 6 is an explanatory view of attachment of a conductive member to a floor panel in the same embodiment.
FIG. 7 is a sectional view of an essential part of still another embodiment of the present invention.
FIG. 8 is an explanatory diagram of attachment of the screw member to the floor panel in the embodiment described above.
FIG. 9 is an explanatory diagram of attachment of the conductive member to the support in the embodiment.
FIG. 10 is a cross-sectional view of a conductive member according to the embodiment.
FIG. 11 is a cross-sectional view of an essential part of still another embodiment of the present invention.
FIG. 12 is an explanatory diagram of attachment of the conductive member to the floor panel in the embodiment same as above.
FIG. 13 is an explanatory view of attachment of an auxiliary member in the embodiment described above.
FIG. 14 is an explanatory diagram of a system floor including a floor panel and a support column.
FIGS. 15A and 15B are explanatory views for explaining attachment positions of the screw member and the conductive member to the floor panel, wherein FIG. 15A is a perspective view of the floor panel viewed from above, and FIG. FIG.
FIG. 16 is a bottom view for explaining a location where a screw member is attached to a floor panel.
FIG. 17 is a perspective view for explaining a conventional ground connection structure between a floor panel and a column.
FIG. 18 is a cross-sectional view of the main part of the above.
FIG. 19 shows a corner lock screw used in the above, wherein (a) is a side view and (b) is a plan view.
[Explanation of symbols]
1 Floor panel
2 props
3 Panel-side conductive part
4 Screw members
5 Conductive members
C Corner

Claims

A ground connection structure of a floor panel and a column provided on a metal floor panel having a non-conductive coating on an outer surface and a metal column supporting a corner portion of the edge of the floor panel. The support body having a substantially plate shape in a square shape in plan view on the support, and the upper surface of the reception body are projected on the upper surface so as to be divided into four substantially square sections, and are arranged in the respective sections. Forming a receiving part composed of a substantially cross-shaped standing part on which the corner of the edge of the floor panel is placed, and is connected to the lower surface near the corner of the edge of the floor panel. A non-painted part as a part is formed, and a column side conductive part that can be electrically connected to the panel side conductive part is formed on a column on which a corner portion of the edge portion of the floor panel is placed. Place the floor panel and the column between the side conductive part and the column side conductive part of the column. Metallic screw member to be attached to the panel-side conductive portion in order to care continuity and, in plan view substantially cross shape standing portion is inserted together with the elastic and abuts on the screw member and the support-side conductive portion The floor panel and the support column are provided with a conductive member placed on the panel placement portion, which is a portion in which the insertion hole is perforated and the standing portion of the receiving portion main body is not raised . Ground connection structure.

2. The ground connection structure for a floor panel and a column according to claim 1, wherein the screw member is constituted by a drilling screw such as a tapping screw, and is provided with a paint peeling portion for peeling the paint on the floor panel. .