JP3825872B2

JP3825872B2 - Double floor support leg and double floor reinforcement and repair method using the same

Info

Publication number: JP3825872B2
Application number: JP10686897A
Authority: JP
Inventors: 金作山下
Original assignee: 有限会社泰成電機工業; 山下義明
Priority date: 1997-04-10
Filing date: 1997-04-10
Publication date: 2006-09-27
Anticipated expiration: 2017-04-10
Also published as: JPH10280645A

Description

【０００１】
【発明の属する技術分野】
本発明は、二重床用支持脚及びそれを用いた二重床の補強・補修方法に関し、さらに詳しくは、集合住宅等の各種建物において既存の基礎床面との間に空間を形成して二重床を構築した乾式二重床において、既設の二重床を補強もしくは補修する際に特に有利に用いることができる支持脚及びそれを用いた施工方法に関する。
【０００２】
【従来の技術】
基礎床上に弾性台座を介して立設された支持脚群によって複数の床パネル（床下地パネル）を所定の高さレベルに支持して二重床の床下地を形成し、その上に捨張り材を介し又は介さずに床仕上材を敷設した床構造は、乾式二重床構造と呼ばれ、集合住宅や体育施設等に多く採用されている。
例えば、特開平４−８５４５３号には、下端に弾性台座を有する床レベル調整可能な支持脚を床下地パネルの四隅に取り付けたパネルユニットをコンクリートスラブ等の基礎床上に載置し、さらにそのパネルユニット上に捨張り材を配設すると共に、その捨張り材上に床仕上材を配設したものが開示されている。
一方、特開平３−１７３４８号や実開平４−１１６５３７号には、下端にゴム台座が回動自在に装着された棒状脚部と該棒状脚部の上端部に上下調節可能に装着された支持部材とからなるユニット支持脚群と、定尺長方形及び／又は正方形の床パネル群とを組み合わせて用い、基礎床の床面上に上記ユニット支持脚を所定ピッチで配置し、所定の間隙を介して配置した床パネルをその縁部の所定の位置で上記ユニット支持脚により支持して床下地を形成する乾式二重床の施工方法が開示されている。
【０００３】
従来のユニット支持脚の一例は、例えば図１４に示すとおりであり、ゴム等の弾性材料からなる接床基台１０４と、該基台１０４に回動自在に立設された支持ボルト１０３からなる脚部材１０２と、外周下部に横方向に突設された環状の支持部１０７を有するレベル調整用ナット１０６が支持板１０８に穿設された挿入孔１０９に嵌合して取り付けられた支持部材とから構成される。このようにして支持板１０８の挿入孔１０９に嵌合されたレベル調整用ナット１０６に脚部材１０２の支持ボルト１０３がねじ込まれてユニット支持脚１０１が組み立てられる。なお、支持板１０８の上面には挿入孔１０９を除く全面に粘着シート１１０が貼着され、また支持ボルト１０３の頂端面にはマイナス溝１０５が設けられており、該溝１０５にドライバー等の回転用工具の先端を嵌め込んで支持ボルト１０３を回転させることにより、施工の際には床パネルからの荷重が支持板１０８を介してレベル調整用ナット１０６に付加されてその回転が抑制されているため、レベル調整用ナット１０６が上下動し、支持板１０８により支持されている床パネル１１４の床面レベルを調整することができる。
【０００４】
以上のようにして組み立てられたユニット支持脚１０１を用いて二重床を構築する場合の施工例は、例えば図１５に示すように、まず部屋壁又は間仕切１１２の所定の高さに沿って際根太１１３（又は根太ユニット）を設け、その上に床パネル１１４の一辺を支持する。際根太１１３に接しない床パネル１１４の他の縁部は、所定のピッチ（Ｐ）で基礎床（コンクリートスラブ）１１１上に配置したユニット支持脚１０１に片持たせの状態で載せて取り付ける。ユニット支持脚１０１と床パネル１１４の取付は、ユニット支持脚１０１の支持板１０８上面に貼着した粘着シート１１０等を介して行い、床パネル敷設時に床パネル１１４を粘着シート１１０に圧着して仮固定しておく。ユニット支持脚１０１の支持板１０８の挿入孔１０９は床パネル１１４の縁部から露出した状態とし、この挿入孔１０９を通してドライバー等により支持ボルト１０３を回し、床パネル１１４のレベル（又は支持板１０８の上面位）を調節する。
【０００５】
隣合う床パネルも同様に、既に設置したユニット支持脚１０１上へ床パネル１１４のレベル調整ができる所定の間隙（Ｗ）を開けて載せ、同様に他のユニット支持脚１０１を配置して取り付ける。このような作業を床パネルごと繰り返し、床パネルを所定面積施工した後、床面レベルを調整する。このようにして全体的に床パネルを水平に敷設した後、床パネル１１４からユニット支持脚１０１の支持板１０８に対して釘打ちし、床パネル１１４をユニット支持脚１０１に固定する。その後、必要に応じてユニット支持脚１０１の支持ボルト１０３上端部とレベル調整用ナット１０６を接着固定した後、床パネル１１４の上に捨張り合板１１５を敷設するか、あるいは隣接する床パネル間の間隙を覆うように粘着テープを貼着した後、ＣＦシート、絨毯、畳、木質フロアー材（フローリング仕上げ）等の床仕上材（図示せず）を敷設し、床仕上施工を完了する。
【０００６】
【発明が解決しようとする課題】
以上のようにして、歩行感の良好な二重床が構築される。ところで、二重床施工後、ピアノ等の重量物の載置によりその部分に撓みもしくは床下がり等が発生し、また、それに起因して床鳴りを生ずることがある。そのため、二重床完工後、重量物の載置箇所の補強が必要になる。
さらに、間仕切や柱の立つ位置の変更や、頻繁に使用する場所（入口、廊下等）、子供たちがあばれたりする場所、体育館等の特に強度が必要な場所等では、二重床完工後に、例えば図１６に示すように既設の支持脚の間にさらに補強用支持脚１０１ｘを設置することが必要になる。また、支持脚の不揃いによる調整直しや、床下の配線や配管等の改修のために明けた孔部分の補修も必要となる場合がある。
【０００７】
このような二重床の補強・補修を行う場合、一般に床仕上材を剥がし、図１７に示すように、補強したい箇所の床パネル１１４ｘに補強用ユニット支持脚１０１ｘの支持板１０８ｘより大きな孔１１６を明け、補強用ユニット支持脚１０１ｘを少なくとも２本用い、その支持板１０８ｘの挿入孔１０９ｘが床パネル１１４ｘの孔１１６の縁部から露出した状態に設置し、支持板１０８ｘのレベル調整を行ってその上面略半分で床パネル１１４ｘの孔１１６の縁部を支持させた後、床パネル１１４ｘと同一の材料から形成した上記孔１１６と略同一寸法の埋め戻し板１１７を孔１１６に嵌め込み、その後、床仕上材を再度施工していた。
そのため、補強・補修作業が非常に煩瑣で時間を要するものとなっており、また、床仕上材及び床パネルに大きな孔を明けるため、仕上面が目立って外観的に劣ると共に、材料に無駄を生じ、さらに補強用ユニット支持脚を複数本使用しなければならず、補強・補修作業の施工費も高くなってしまうという問題があった。
【０００８】
また、従来の乾式二重床構造では、間仕切の下には必ず補強支持脚を入れることになっている。間仕切設置に先立って予め二重床構造を全体的に施工する床先行工法の場合、実際の施工では、コンクリートスラブ等の基礎床面に間仕切設置箇所の墨を打ち、その部分に補強支持脚を配置しながら施工しなければならない。しかしながら、コンクリートスラブ面は埃等で汚れており、墨が打ちずらいばかりでなく、墨を打ち間違うと、床が出来上がった後に間仕切の下に補強支持脚が設置されておらず、床下がりや床鳴りといった問題が発生することが生じた。それを補修するためには、床を剥がして補強支持脚を入れなければならなかった。そのような理由からも、床先行工法を施工するにはある程度の知識と経験を積んだ職人でなければ施工できず、このことが床先行工法の普及を妨げる一因になっていた。
【０００９】
さらに最近では、住宅のフリープラン（決まった間取りではなく、入居する人が自分にあった間取りを行い施工する）化やリフォームで間取りを変更するケースが数多く出てきている。間仕切先行工法では、この場合、床をすべて取り払わないと間仕切を移動することができず、たいへんな工事となってしまう。この時に床先行工法だと、床がそのままの状態で間仕切だけ移動することができ、改修の時間や改修費の低減になるという利点が得られる。しかしながら、前記したように、これまでは間仕切の下に補強支持脚を入れることが簡単にできなかったため、部屋を広くする（間仕切を取り払う）ことしかできないという問題があった。
【００１０】
従って本発明の目的は、二重床の補強・補修の必要な箇所に比較的小さな孔を明けることによって作業性良く補強・補修できる二重床用支持脚及びそれを用いた二重床の補強・補修方法を提供することにある。
さらに本発明の目的は、材料損失を最小限に抑え、また支持脚の使用本数が少なくても安定した強度の高い補強・補修を作業性良く比較的低コストで行うことができる二重床の補強・補修方法及びそれに有利に用いることができる二重床用支持脚を提供することにある。
本発明の他の目的は、二重床施工後に床上から任意の位置に補強支持脚を設置することが可能であり、従って、二重床施工後に床パネル上に間仕切位置の墨出しを行い、熟練工でなくても床先行工法により簡単に補強支持脚を施工でき、それによって間仕切をどの位置にも配置することができ、また間仕切の追加にも容易に対応可能な二重床用支持脚及びそれを用いた二重床の施工方法を提供することにある。
【００１１】
【課題を解決するための手段】
前記目的を達成するために、本発明によれば、脚体と；上部に横方向に収縮及び拡張可能な、あるいは拡張可能な中空部が形成され、かつ、該中空部の外側面所定位置にその上部よりも下部が横方向に拡張する段差部が形成されており、上記脚体の上部に高さ調整自在に装着される支持部材と；該支持部材の上記中空部内に嵌挿される嵌め込み部材とからなることを特徴とする二重床用支持脚が提供される。
二重床の補強・補修の必要な箇所に必要最小限の孔を明けて補強を行う好適な態様においては、上記脚体は、接床基台と、該接床基台に回動自在に立設され、少なくとも上部にねじ部を有する脚部材とからなり、上記支持部材の下部が上記脚部材のねじ部に螺合されており、かつ、上記接床基台の最も大きな箇所が上記中空部の大きさ以下の外形寸法を有する。
【００１２】
さらに好適な具体的態様においては、前記支持部材の中空部が軸線方向に複数本のスリットが形成された略円筒状に形成されていると共に、前記嵌め込み部材が、上記支持部材の中空部の内部形状と略等しい外形を有し、かつ、軸線方向の中心貫通孔を有する略円筒状に形成されている。また、上記嵌め込み部材の外周面所定位置に、上記支持部材の中空部に形成されたスリット内に挿入される突出部を形成することが好ましい。
さらに作業性を良くするために、上記支持部材の中空部外周面に環状に１本又は複数本の溝部を形成することもできる。なお、脚部材を回して上記支持部材のレベル調整を行えるようにするためには、脚部材の上方に向いている面に回転用工具を係合させるための係合部を形成することが好ましい。
【００１３】
さらに本発明によれば、前記のような支持脚を用いた二重床の補強・補修方法も提供される。その方法は、既設の二重床を補強もしくは補修する方法であって、既設の二重床の補強もしくは補修したい箇所に、使用する支持脚の支持部材上部の外形寸法と略等しい大きさの孔を明ける工程、該孔に前記支持脚の脚体と支持部材の組立体を挿入する工程、その支持部材の高さを二重床の上記孔の下縁部が支持部材の段差部で支持されるように調整する工程、上記支持部材の中空部に嵌め込み部材を嵌挿する工程、及び接着剤を注入して支持部材と二重床の孔部側面、嵌め込み部材及び脚体の上部とを固着する工程を含むことを特徴としている。
既設の二重床に床仕上材が施工されており、このような二重床に孔を明けた場合には、さらに上記孔部上部に補修材で床仕上材に応じた化粧仕上げを施す。
【００１４】
【発明の実施の形態】
本発明に係る二重床用支持脚は、脚体の上部に高さ調整自在に装着された床パネル支持用の支持部材の上部に、横方向に収縮及び拡張可能な、あるいは拡張可能な中空部が形成され、かつ、該中空部の外側面所定位置にその上部よりも下部が横方向に拡張する段差部が形成されている。従って、例えば既設の二重床（もしくは床パネル）の補強しようとする位置に上記中空部の外形寸法と同じ大きさの孔を明けた後、上記中空部を押し縮めて該中空部の外側面所定位置に突設された上記段差部の外形寸法が上記二重床の孔よりも小さくなるようにすることにより（あるいは既にこのように収縮した状態に中空部が形成されている場合にはそのまま）、支持脚を上方から二重床の孔を通して設置することができる。設置後、中空部に加えられていた押圧力を解除することにより、中空部はその弾性により元の状態（外形寸法）まで復帰するので（中空部が既に収縮した状態に形成されている場合には、レベル調整後に嵌め込み部材を中空部内に嵌め込んで拡張することにより）、二重床の孔にぴったりと嵌め込まれた状態となる。この状態では、上記段差部は中空部の外形寸法（二重床の孔部寸法）よりも大きいため、段差部で二重床の孔の縁部を支持し得る状態となる。その後、上記支持部材の高さを二重床の床面レベルに応じた所定の高さ位置に調整した後、上記二重床の孔から接着剤を注入すると共に上記支持部材の中空部に嵌め込み部材を嵌挿することにより、支持部材と二重床の孔部側面、嵌め込み部材及び脚体の上部を固着することができる。
【００１５】
すなわち、本発明の二重床用支持脚は、既設の二重床（もしくは床パネル）に形成した孔を通して上方から設置できるようにしたことを特徴としている。
従来のユニット支持脚では、全て床パネルの下方から設置するように構成されており、そのため、既設の二重床を補強もしくは補修する際には、その部分に大きな孔を形成し、該孔及びその埋め戻し板の対向する縁部の少なくとも２箇所にユニット支持脚を配設する必要があった。
これに対して、本発明の二重床用支持脚を用いた場合、二重床の補強・補修の必要な箇所に支持脚の中空部の外形寸法に対応する必要最小限の孔を明ければよく、また支持脚もその部分では１本だけ使用し、上記孔を通して上方から設置する。従って、材料損失を最小限に抑え、また支持脚の使用本数が少なくても安定した強度の高い補強・補修を作業性良く比較的低コストで行うことができる。さらに、従来の補強・補修方法では床パネルに大きな孔を明ける必要上、補強箇所の位置に制限を受けるが、本発明の二重床用支持脚を用いた場合にはこのような制限を殆ど受けることはなく、補強箇所（設置箇所）の自由度が上がる。
【００１６】
【実施例】
以下、添付図面に示す好適な実施例を説明しつつ、本発明についてさらに具体的に説明する。
図１乃至図３は本発明の二重床用支持脚の一実施例を示しており、図１はその分解斜視図、図２は接床基台と脚部材の取付態様を示す部分断面図、図３は接床基台の底面を示している。
支持脚１は、接床基台２１と該接床基台に回動自在に立設された脚部材（支持ボルト）２５とからなる脚体２と、円筒状下部３５にナット３７が嵌合される支持部材３と、該支持部材の上部中空部３１内に嵌挿される嵌め込み部材４とから構成されている。
【００１７】
接床基台（弾性台座）２１は、ゴム、合成樹脂等の比較的硬質、低反撥弾性の弾性材料から作製されて、コンクリートスラブ等の基礎床の床面にジャストフィットし、かつ防振の機能を果たすようにされている。そして、その上面中央部には、図２に示すように、支持ボルト２５の基端丸棒部２７を挿入するための非貫通の中央孔２２が形成されている。また、接床基台２１の下面には、図３に示すように、同心円状に複数（図示の例では４本）の環状突起２３が突設され、基礎床面との設置面積を小さく、しかも適度の弾性（沈み込み）を確保して防振・遮音性能をさらに向上させるように構成されている。なお、このような突起は形成しなくても構わず、あるいは、少なくとも３個以上、好ましくは４個の略半球状の突起、円筒状突起など任意の形状に形成することもできる。但し、突起を設ける場合、接床基台に対して荷重が伝達される支持脚軸心上には突起を形成しないことが好ましい。何故ならば、支持脚軸心上の接床基台下面に突起を形成した場合、下面を平坦にした場合と殆ど同じ床衝撃音レベルの低減しか得られないからである。
【００１８】
一方、金属製の支持ボルト２５は、下端から上方に所定距離離間した位置外周面に側方に突出する環状のフランジ部２６が一体に設けられ、かつフランジ部より上部にはねじ部が形成され、またフランジ部２６より下方の基端部２７は円形断面の丸棒部に形成されており、該基端丸棒部２７の下端には膨出部２８が形成されている。また支持ボルト２５の頂端面にはドライバー、電動ドライバー等の回転用工具の先端を係合させるための係合部を構成する溝部２９（図示の例ではマイナス溝であるが、プラス溝や角型凹陥部であってもよい）が形成されている。そして、支持ボルト２５の基端丸棒部２７を上記接床基台２１の中央孔２２にワッシャ２４を介して嵌挿することにより、支持ボルト２５はフランジ部２６を支持部として接床基台２１に回動自在に立設された状態となる。また、支持ボルト２５の基端丸棒部２７の下端には膨出部２８が形成され、一旦支持ボルト２５の基端丸棒部２７が接床基台２１の中央孔２２に嵌挿された後に抜け出難くなるようにされている。なお、基端丸棒部２７の長さは接床基台２１の中央孔２２の深さよりも浅く、その下方に空気室Ｓが形成されるような長さにしてある。このように基端丸棒部２７の下部に空気室Ｓを設けることにより、空気室Ｓがエアークッションとして機能し、防振効果がさらに向上するが、空気室を設けないようにしても構わない。また、接床基台２１の中央孔２２内面にはグリース等の潤滑剤を塗布し、支持ボルト２５の回動が滑らかに行えるようにし、また空気室Ｓを気密状態に封止することが好ましい。
【００１９】
支持部材３は、上部の中空部３１と円筒状下部３５とからなる。中空部３１は、軸線方向に複数本（図示の例では８本）のスリット３２が形成された略円筒状に形成されており、押圧力を加えることにより横方向に収縮自在（さらに、拡張自在）に構成されている。また、上記中空部３１の外周面所定箇所には横方向に拡張する段差部３３が形成され、この段差部３３で床パネルに形成した孔の縁部を支持するように構成されている。段差部３３の外径は、中空部３１の上部を内側に向って収縮させたときに中空部３１上部の元の外径と等しいか僅かに小さくなるような寸法とされている。中空部３１の上端から段差部３３までの距離を床パネルの厚さと同一にすることにより、上記段差部３３で床パネルの孔の縁部を支持した状態では、中空部３１の上端面と床パネル表面が面一の状態となる。さらに、上記中空部３１の段差部３３より上部の外周面には、環状に複数本（図示の例では４本）の溝部３４が形成されている。これらの溝部３４は、接着剤を注入したときに床パネルの孔側面と中空部３１の外周面との間の接着剤流通路及び接着剤溜りとして作用してそれらの間の接合強度の増大に寄与すると共に、例えば上部の溝部３４に糸、紐等を巻き付けて中空部を収縮させる際のガイドとして用いることができる。
【００２０】
一方、支持部材３の円筒状下部３５にはナット３７を嵌合させるための中心貫通孔３６が形成されている。ナット３７の外周面にはローレット加工が施されており、上記円筒状下部３５の中心貫通孔３６に嵌合したときに抜け出ることなくしっかりと嵌合するように構成されていると共に、ローレットの溝部は接着剤浸透路及び接着剤溜りとして作用して接着剤による支持部材３とナット３７の接合強度の増大にも寄与する。また、ナット３７の下端には横方向に拡張する鍔部３８が形成されており、該鍔部３８は支持部材３の下端面を支持するのに供される。
支持部材３とナット３７は、図１に示すように、プラスチック、金属等の硬質、高強度材料から別体に形成することもできるが、金属製ナットとプラスチック製支持部材をインサート成形により一体的に形成することもできる。その場合、ナット３７は必ずしもその外周面にローレット加工を施したものである必要はなく、あるいは爪部など他の接合強度増強手段を形成したものでもよい。
なお、支持部材３と前記接床基台２１の外形寸法関係は、接床基台２１の最も大きな下部外径が支持部材３の前記中空部３１の外径と等しいか若干小さくなるように構成されている。
【００２１】
嵌め込み部材４は、プラスチック、ゴム等適宜の材料から形成されており、前記支持部材３の円筒状下部３５の中心貫通孔３６と略等しい大きさの中心貫通孔４２が軸線方向に形成された円筒状本体４１の外周面には、前記支持部材３のスリット３２と対応する位置に円周方向に所定の間隔で、スリット３２の幅と等しいか僅かに小さい幅の複数（図示の例ではスリットと同数の８個）の突出部４３が形成されている。嵌め込み部材４は、上記円筒状本体４１の外径が支持部材３の中空部３１の内径と略同一（好ましくは等しいか僅かに大きい）であり、また各突出部４３の高さが中空部３１の各スリット３２に挿入されたときに中空部３１の挿入位置の外周と略同一（好ましくは等しいか僅かに小さい）となるような外形寸法を有する。上記突出部４３は注入する接着剤の支持部材外周面からの垂れを防止するためのものであり、その上面が支持部材３の段差部３３より上部に位置する必要があるが、このような接着剤の垂れが問題とならない場合、接着剤の粘性が高くて垂れ難い場合、あるいはさらに中空部３１内に接着剤を注入した後に嵌め込み部材４を中空部３１内に嵌め込む工程順序を採用する場合には、必ずしも上記突出部を設ける必要はない。
【００２２】
図４及び図５は、前記図１乃至図３に示す本発明の二重床用支持脚１の組立体の床パネル１１４への取付態様を示しており、図４は上方から見た支持脚の平面図、図５は部分断面側面図である。
施工に際しては、まず、既設の床パネル１１４の補強しようとする位置にドリル等で支持部材３の中空部３１の外径に等しい径の孔１１８を明ける。次いで、支持部材３の中心貫通孔３６に嵌合されたナット３７を脚体２の支持ボルト２５上部に螺合して組み立て、段差部３３の高さが既設の床パネル１１４の下面よりも若干低くなるような高さ関係に予め調整されたものを、図６に示すように、支持部材３の中空部３１上部を指で押し縮め、あるいは中空部３１外周面に形成された上部の溝部３４に糸や紐（図示せず）を巻き付けて締める。それによって支持部材３の中空部３１はその上部が図６に示すように収縮し、それと共に段差部３３も収縮して中空部３１の外径（床パネル１１４の孔１１８の径）と等しいか僅かに小さい外径寸法となるので、上記組立体を上方から床パネル１１４の孔１１８を通して挿入し、図６に示すように基礎床１１１上に設置する。支持部材３の中空部３１上部から指を離し、あるいは巻き付けて締めていた糸や紐を解くと、中空部３１はその弾性により元の外径まで復帰し、中空部３１の外周面が床パネル１１４の孔１１８に嵌まり込んだ状態となる。
【００２３】
その後、床パネル１１４の上方から中空部３１を通してドライバー等の回転用工具の先端を支持ボルト２５の頂端面の溝部２９に嵌め合わせ、支持ボルト２５を回して支持部材３の高さを調整し、図５に示すように、段差部３３で床パネル１１４の孔１１８の下縁部が支持された状態とする。この状態で、中空部３１の内部に接着剤を注入した後、嵌め込み部材４を嵌挿するか、あるいは嵌め込み部材４を中空部３１内に嵌挿した後、嵌め込み部材４の中心貫通孔４２及び支持部材３の中空部３１のスリット３２に接着剤を注入する。それによって、支持部材３と嵌め込み部材４との間及び脚体２の上部（支持ボルト２５の上部）との間が固着される。また、接着剤は支持部材３のスリット３２から中空部３１の外周面に形成された溝部３４に浸透し、支持部材３と床パネル１１４の孔１１８の周側面との間も強固に接合する。このようにして、図５に示すような状態で支持脚１が組み立てられ、その設置箇所の床パネル１１４の部分の支持が補強される。
【００２４】
本発明の二重床用支持脚は、床パネル１１４の敷設後に前記図４乃至図６に示すように補強することもできるし、あるいは床パネル敷設前に、敷設しようとする床パネルの補強位置に予め取り付けておくための支持脚として用いることもできるが、床仕上材まで施工した二重床の施工後（例えば、集合住宅の場合には入居後）に支持脚を補強位置に取り付け、補強するために好適に用いることができる。この場合、従来のように床仕上材を剥がすことなく、二重床にそのまま孔を明けて取り付けることができる。
すなわち、例えば図７に示すように床パネル１１４の上に床仕上材１１９が敷設されている場合、これらを貫通する孔１１８ａを明け、この孔１１８ａに前記図４乃至図６に関して説明した施工方法と同様にして支持脚１を取り付けた後、床仕上材１１９と同じか又は類似の材質の補修仕上材１２０で孔１１８ａの部分に化粧仕上げを行う。
【００２５】
図８及び図９は本発明の二重床用支持脚の別の実施例を示している。
この実施例の支持脚１ａの場合、前記した実施例と同様に、脚体２ａ、支持部材３ａ及び嵌め込み部材４ａから構成されているが、前記実施例と大きく異なる点は、支持部材３ａの円筒状下部３５ａの中心貫通孔３６ａに雌ねじ部が形成され、ナットが嵌合されていない点、及び嵌め込み部材４ａの中心貫通孔４２ａを有する円筒状本体４１ａの外周面に突出部が形成されていない点である。支持部材３ａの上部が、軸線方向に複数のスリット３２ａが形成された中空部３１ａに形成され、その外周面所定位置に横方向に拡張する段差部３３ａが形成されていることは、前記実施例と同様である。また、中空部３１ａの上半部外周面には、断面ジクザグ状の溝部３４ａが形成されている。さらに、支持ボルト２５ａと接床基台２１ａの取付態様も前記図２に示すものと同様であるが、本実施例のように支持ボルト２５ａのフランジ部２６ａと接床基台２１ａとの間にワッシャを介在させないようにしてもよい。このような場合、フランジ部２６ａを少し大きく形成することが好ましい。なお、支持部材３ａの段差部３３ａと接床基台２１ａの外形寸法関係などは前記実施例の場合と同様である。
【００２６】
図１０は本発明の二重床用支持脚のさらに別の実施例を示している。
この実施例の支持脚１ｂの場合、脚体２ｂの脚部材２５ｂが中空状に形成されている。すなわち、金属、プラスチック等から作製された脚部材２５ｂは、略中央部の補強円板部５１を境に、下方の円筒部５２と上方の内周に雌ねじ部５４が形成された円筒ねじ部５３とからなり、上記補強円板部５１の上面には回転工具係合用の溝部２９ｂが形成されている。また、ゴム等の弾性材料から作製された接床基台２１ｂの上面略中央部には、上記脚部材２５ｂの円筒部５２の内径と等しい径の円形突出部（円柱部）５０が突設されている。この円形突出部５０は、上記脚部材２５ｂをワッシャ２４ｂを介して接床基台２１ｂに立設する際に円筒部５２に嵌まり込み、脚部材２５ｂを接床基台２１ｂ上に垂直に立設でき、かつ垂直状態のまま回すことができるようにするためのガイドとして機能する。
【００２７】
一方、支持部材３ｂは、中心貫通孔３６ｂを有する円筒状下部３５ｂの外周面に前記脚部材２５ｂの円筒ねじ部５３と螺合する雄ねじ部３９が形成されている点を除けば、スリット３２ｂや段差部３３ｂ、溝部３４ｂを形成した中空部３１ｂの構造は前記図１に示す実施例の場合と同様である。また、嵌め込み部材４の構造は図１に示すものと同じである。さらに、支持部材３ｂの段差部３３ｂと接床基台２１ｂの外形寸法関係なども前記図１に示す実施例の場合と同様である。この実施例の支持脚１ｂの場合、図１０に示すように、床パネル１１４の孔１１８を通して設置し、取り付けた後、嵌め込み部材４の中心貫通孔４２及び支持部材３ｂの円筒状下部３５ｂの中心貫通孔３６ｂを通してドライバー等の回転用工具の先端を上方から挿入し、脚部材２５ｂの補強円板部５１に形成された溝部２９ｂに嵌め合わせ、脚部材２５ｂを回すことによって支持部材３ｂの高さ調整を行うことができる。
【００２８】
図１１及び図１２は本発明の二重床用支持脚のさらに他の実施例を示している。
この実施例の支持脚１ｃの場合、脚体２ｃの脚部材２５ｃが中空状に形成されていることは前記図１０に示す実施例と同様であるが、金属、プラスチック等から作製された脚部材２５ｃの下端部近傍に設けられた補強円板部５１ｃを境に、下方の円筒部５２ｃと上方の内周に雌ねじ部５４ｃが形成された円筒ねじ部５３ｃとからなり、上記下方の円筒部５２ｃに接床基台２１ｃの上面略中央部に突設された円形突出部５０ｃが隙間なく回動自在に嵌め込まれ、ゴム等の弾性材料から作製された接床基台２１ｃの上面全体で荷重を受けるように構成されている。また、上記補強円板部５１ｃの上面には六角レンチ等の回転工具係合用の六角状凹部２９ｃが形成されている。一方、上方の円筒ねじ部５３ｃの上端には上方に向って拡開する面取部５５が形成され、支持部材３ｃの外周面を伝って垂れる接着剤を受けるように構成されている。
【００２９】
一方、支持部材３ｃは、中心貫通孔３６ｃを有する円筒状下部３５ｃの外周面に前記脚部材２５ｃの円筒ねじ部５３ｃと螺合する雄ねじ部３９ｃが形成されている点、及び上部がスリット３２ｃや段差部３３ｃを形成した中空部３１ｃである点は前記図１０に示す実施例の場合と同様であるが、本実施例の場合、円筒状下部３５ｃの長さが長く形成され、かつ、上部が幅広の細長い三角形状のスリット３２ｃの下底５６が外側に向って下がるように傾斜している点で前記図１０に示す実施例とは異なる。このようにスリット３２ｃの長さを長くし、かつその下底５６を外側に傾斜させることにより、中空部３１ｃの柔軟性が増し、また中空部３１ｃ内に注入された接着剤はスリット３２ｃの下底５６を通って下方に流れ、脚部材２５ｃの上端の面取部５５を介して支持部材３ｃの雄ねじ部３９ｃと円筒ねじ部５３ｃの雌ねじ部５４ｃの螺合部に浸透し、これらを接合する。従って、本実施例の場合、中空部３１ｃ内に嵌挿する嵌め込み部材（図示せず）の外周面に突出部を設ける必要はない。なお、支持部材３ｃの段差部３３ｃと接床基台２１ｃ及び脚部材２５ｃとの外径寸法関係や支持部材３ｃの高さ調整方法などは前記図１０に示す実施例の場合と同様である。
【００３０】
図１３は本発明の二重床用支持脚のさらに他の実施例を示している。
この実施例の支持脚１ｄの場合、支持部材３ｄの円筒状下部３５ｄが大きな内径を有し、その内周面に雌ねじ部５８が形成されており、一方、脚体２ｄは、脚部材として上記雌ねじ部５８と合致する外周ねじ部を有する金属、プラスチック等から作製された太い支持ボルト２５ｄと、該支持ボルト２５ｄの基端丸棒部２７ｄが嵌め込まれる凹陥部５７が形成されたゴム等の弾性材料製の接床基台２１ｄとからなり、上記支持ボルト２５ｄの頂端面に六角レンチ等の回転工具係合用の六角状凹部２９ｄが形成されている点で、前記図１１及び図１２に示す実施例と異なるが、他の構成は同様である。このような太い支持ボルト２５ｄを用いることにより、支持強度を大きくすることができ、プラスチック製の場合にも充分な強度を確保できる。なお本実施例の場合、支持部材３ｄと前記接床基台２１ｄの外形寸法関係は、支持部材３ｄの円筒状下部３５ｄと接床基台２１ｄの外径が略等しく、これらが支持部材３ｄの中空部３１ｄの外径と等しいか若干小さくなるように構成されている。
【００３１】
以上、本発明の二重床用支持脚及びそれを用いた二重床の補強・補修方法の好適な実施例について説明したが、本発明は前記した実施例に限定されるものではなく、種々の設計変更が可能である。例えば、支持部材の中空部に形成するスリットは、図１に示すような細長い長方形状や、図１２に示すような上部が幅広の細長い三角形状だけでなく、例えば半楕円形状など任意の形状にすることができる。支持部材の中空部は、取付時にその段差部の外形寸法が床パネルに形成した孔を通過できる大きさであり、その後拡張して段差部で床パネルの孔の下縁部を支持できるように構成されればよい。従って、例えば中空部を予めその上部が収縮した上部開口部を有する略樽状に成形し、かつ軸線方向に複数本の切れ目を設けたものとすることもできる。この場合、嵌め込み部材を嵌挿して中空部を押し拡げ、このようにして拡張された段差部で床パネルの孔の下縁部を支持する。また、嵌め込み部材を押し込んで中空部を押し拡げた時、床パネルの孔周面に中空部を押し付けるような寸法関係にすることもできる。また、脚部材の構造も従来公知の種々の構造を採用でき、例えば接床基台の中央孔を貫通孔とすることもでき、さらに、接床基台、支持部材、嵌め込み部材の形状も多角形など任意の形状とすることもできる。
【００３２】
【発明の効果】
以上のように、本発明の二重床用支持脚及びそれを用いた二重床の補強・補修方法によれば、既設の二重床に形成した孔を通して上方から設置できるように構成されているため、二重床の補強・補修の必要な箇所に支持脚の中空部の外形寸法に対応する必要最小限の孔を明ければよく、また支持脚もその部分では１本だけ使用すればよく、従って、材料損失を最小限に抑え、また支持脚の使用本数が少なくても安定した強度の高い補強・補修を作業性良く低コストで行うことができ、また補強箇所の外観もそれほど損なわれることはない。さらに従来の補強・補修方法では大きな孔を明ける必要上、補強箇所の位置に制限を受けるが、本発明の二重床用支持脚を用いた場合にはこのような制限を殆ど受けることはなく、補強箇所（設置箇所）の自由度が上がる。
さらに本発明によれば、二重床施工後に床上から任意の位置に補強支持脚を設置することが可能であり、従って、二重床施工後に床パネル上に間仕切位置の墨出しを行うことができるため、墨打ちを行い易く、熟練工でなくても床先行工法により簡単に補強支持脚を施工できる。その結果、改修時間や改修費を低減することができるという利点が得られると共に、間仕切をどの位置にも配置することができ、また間仕切の追加にも容易に対応できるという利点が得られる。
【図面の簡単な説明】
【図１】本発明の二重床用支持脚の一実施例を示す分解斜視図である。
【図２】図１に示す支持脚の接床基台と脚部材の取付態様を示す部分断面図である。
【図３】図１及び図２に示す接床基台の底面図である。
【図４】図１に示す支持脚を床パネルに取り付けた状態で上方から見た支持脚の平面図である。
【図５】図１に示す支持脚を床パネルに取り付けた状態の図４のＡ−Ａ線矢視部分断面図である。
【図６】図１に示す支持脚を、支持部材上部の中空部を収縮した状態で、床パネルの孔部を通して設置した状態を示す部分断面側面図である。
【図７】図１に示す支持脚を床仕上げを施した二重床に取り付けた状態を示す部分断面側面図である。
【図８】本発明の別の実施例の支持脚を床パネルに取り付けた状態で上方から見た支持脚の平面図である。
【図９】本発明の別の実施例の支持脚を床パネルに取り付けた状態の図８のＢ−Ｂ線矢視部分断面側面図である。
【図１０】本発明のさらに別の実施例の支持脚を床パネルに取り付けた状態の部分断面側面図である。
【図１１】本発明の他の実施例の支持脚の平面図である。
【図１２】図１１に示す本発明の他の実施例の支持脚のＣ−Ｃ線矢視部分断面側面図である。
【図１３】本発明のさらに他の実施例の支持脚の部分断面側面図である。
【図１４】従来のユニット支持脚の一例の分解斜視図である。
【図１５】従来の二重床の施工例を示す部分破断斜視図である。
【図１６】二重床の補強位置を説明するためのユニット支持脚と床パネルの配置形態例の部分平面図である。
【図１７】従来のユニット支持脚による補強例を説明するための部分平面図である。
【符号の説明】
１，１ａ，１ｂ，１ｃ，１ｄ二重床用支持脚
２，２ａ，２ｂ，２ｃ，２ｄ脚体
３，３ａ，３ｂ，３ｃ，３ｄ支持部材
４，４ａ嵌め込み部材
２１，２１ａ，２１ｂ，２１ｃ，２１ｄ接床基台
２５，２５ａ，２５ｂ，２５ｃ，２５ｄ脚部材（支持ボルト）
２９，２９ａ，２９ｂ，２９ｃ，２９ｄ溝部
３１，３１ａ，３１ｂ，３１ｃ，３１ｄ中空部
３２，３２ａ，３２ｂ，３２ｃ，３２ｄスリット
３３，３３ａ，３３ｂ，３３ｃ，３３ｄ段差部
３４，３４ａ，３４ｂ溝部
３５，３５ａ，３５ｂ，３５ｃ，３５ｄ円筒状下部
３７ナット
４３突出部
１０１，１０１ｘユニット支持脚
１１１基礎床（コンクリートスラブ）
１１４，１１４ｘ床パネル
１１６，１１８，１１８ａ孔
１１９床仕上材
１２０補修仕上材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support floor for a double floor and a method for reinforcing / repairing a double floor using the same, and more specifically, a space is formed between an existing foundation floor surface in various buildings such as an apartment house. The present invention relates to a support leg that can be used particularly advantageously when reinforcing or repairing an existing double floor in a dry double floor constructed with a double floor, and a construction method using the same.
[0002]
[Prior art]
A plurality of floor panels (floor base panels) are supported at a predetermined height level by supporting legs standing on the foundation floor via elastic pedestals to form a double floor floor base, and then disposed on it. A floor structure in which a floor finishing material is laid with or without a material is called a dry double floor structure, and is often used in housing complexes and physical education facilities.
For example, in Japanese Patent Laid-Open No. 4-85453, a panel unit in which floor level-adjustable support legs having an elastic pedestal at the lower end are mounted on four corners of a floor base panel is placed on a foundation floor such as a concrete slab, and the panel A disposing material is provided on the unit, and a flooring material is disposed on the disposing material.
On the other hand, in JP-A-3-17348 and JP-A-4-116537, a rod-like leg portion having a rubber pedestal rotatably attached to the lower end and a support attached to the upper end portion of the rod-like leg portion so as to be vertically adjustable. A unit support leg group consisting of members and a fixed rectangular and / or square floor panel group are used in combination, and the unit support legs are arranged at a predetermined pitch on the floor surface of the foundation floor, with a predetermined gap interposed therebetween. A construction method for a dry double floor is disclosed in which a floor panel is formed by supporting a floor panel placed in a predetermined position on an edge of the floor panel with the unit support legs.
[0003]
An example of a conventional unit support leg is as shown in FIG. 14, for example, and includes a floor-contact base 104 made of an elastic material such as rubber and a support bolt 103 that is rotatably erected on the base 104. A leg member 102, and a support member attached by fitting a level adjusting nut 106 having an annular support portion 107 projecting laterally at the lower outer periphery into an insertion hole 109 formed in the support plate 108; Consists of In this manner, the unit support leg 101 is assembled by screwing the support bolt 103 of the leg member 102 into the level adjusting nut 106 fitted in the insertion hole 109 of the support plate 108. An adhesive sheet 110 is attached to the entire top surface of the support plate 108 except for the insertion hole 109, and a minus groove 105 is provided on the top end surface of the support bolt 103. A rotation of a driver or the like is provided in the groove 105. By rotating the support bolt 103 by fitting the tip of the tool for use, a load from the floor panel is applied to the level adjustment nut 106 via the support plate 108 during construction, and the rotation is suppressed. Therefore, the level adjusting nut 106 moves up and down, and the floor level of the floor panel 114 supported by the support plate 108 can be adjusted.
[0004]
As shown in FIG. 15, for example, when constructing a double floor using the unit support legs 101 assembled as described above, first, along the predetermined height of the room wall or the partition 112, the construction example is as follows. A joist 113 (or joist unit) is provided, and one side of the floor panel 114 is supported thereon. The other edge of the floor panel 114 that does not contact the joist 113 is mounted and mounted in a cantilevered manner on the unit support legs 101 arranged on the foundation floor (concrete slab) 111 at a predetermined pitch (P). The unit support leg 101 and the floor panel 114 are attached via an adhesive sheet 110 or the like attached to the upper surface of the support plate 108 of the unit support leg 101, and the floor panel 114 is pressure-bonded to the adhesive sheet 110 when the floor panel is laid. Keep it fixed. The insertion hole 109 of the support plate 108 of the unit support leg 101 is exposed from the edge of the floor panel 114, and the support bolt 103 is turned by a screwdriver or the like through the insertion hole 109, so that the level of the floor panel 114 (or the support plate 108 Adjust the top position.
[0005]
Similarly, adjacent floor panels are mounted on the already installed unit support legs 101 with a predetermined gap (W) that allows the level of the floor panel 114 to be adjusted, and the other unit support legs 101 are similarly arranged and attached. Such work is repeated for each floor panel, and after the floor panel is constructed to a predetermined area, the floor level is adjusted. After the floor panel is laid horizontally in this way, the floor panel 114 is fixed to the unit support leg 101 by nailing from the floor panel 114 to the support plate 108 of the unit support leg 101. Thereafter, if necessary, the upper ends of the support bolts 103 of the unit support legs 101 and the level adjusting nut 106 are bonded and fixed, and then a plywood 115 is laid on the floor panel 114 or between adjacent floor panels. After sticking the adhesive tape so as to cover the gap, floor finishing materials (not shown) such as CF sheets, carpets, tatami mats, and wooden floor materials (flooring finish) are laid to complete the floor finishing construction.
[0006]
[Problems to be solved by the invention]
As described above, a double floor having a good walking feeling is constructed. By the way, after construction of a double floor, the placement of a heavy object such as a piano may cause the portion to bend or fall down, and may cause floor noise. Therefore, after the double floor is completed, it is necessary to reinforce the place where heavy objects are placed.
In addition, in places where partitions or pillars stand up, frequently used places (entrances, corridors, etc.), where children are exposed, places where particularly strong strength is required, such as gymnasiums, For example, as shown in FIG. 16, it is necessary to further install a reinforcing support leg 101x between the existing support legs. In addition, it may be necessary to re-adjust due to uneven support legs, or to repair the holes that have been opened for repair of wiring and piping under the floor.
[0007]
When reinforcing and repairing such a double floor, generally, the floor finishing material is peeled off, and as shown in FIG. 17, a hole 116 larger than the support plate 108x of the reinforcing unit support leg 101x is formed in the floor panel 114x at the location to be reinforced. And use at least two reinforcing unit support legs 101x, with the insertion hole 109x of the support plate 108x exposed from the edge of the hole 116 of the floor panel 114x, and adjust the level of the support plate 108x. After supporting the edge of the hole 116 of the floor panel 114x with its upper surface approximately half, the backfill plate 117 having the same dimensions as the hole 116 formed from the same material as the floor panel 114x is fitted into the hole 116, and then The floor finish was being applied again.
For this reason, the reinforcement and repair work is very cumbersome and time-consuming, and because the floor finishing material and floor panel are made with large holes, the finished surface is conspicuous and the appearance is inferior, and the material is wasted. In addition, there is a problem in that a plurality of reinforcing unit support legs must be used, and the construction cost for the reinforcement and repair work is increased.
[0008]
In the conventional dry double floor structure, reinforcing support legs are always placed under the partition. In the case of the floor advance construction method in which the double floor structure is preliminarily constructed prior to the installation of the partition, in the actual construction, the ink is applied to the foundation floor surface of the concrete slab, etc., and the reinforcing support legs are applied to that portion. Construction must be done while placing. However, the concrete slab surface is dirty with dust, etc., and not only is it hard to strike the ink, but if you make a mistake in the ink, the reinforcing support legs are not installed under the partition after the floor is completed, Problems such as flooring occurred. To repair it, the floor had to be peeled off and reinforcing support legs had to be inserted. For this reason, in order to construct the pre-floor construction method, it can only be carried out by craftsmen with a certain level of knowledge and experience. This has been one of the factors that hinder the spread of the pre-floor construction method.
[0009]
More recently, there have been many cases where the floor plan is changed by changing to a free plan for a house (instead of a fixed floor plan, the occupant will make a floor plan that suits him / her). In this case, in the case of the partition prior construction method, the partition cannot be moved unless all the floor is removed. At this time, with the floor advance construction method, it is possible to move only the partition with the floor as it is, and there is an advantage that the time and cost for the repair are reduced. However, as described above, there has been a problem that the room can only be widened (the partition is removed) because it has not been easy to put the reinforcing support leg under the partition so far.
[0010]
Accordingly, an object of the present invention is to provide a double floor support leg which can be reinforced and repaired with good workability by making a relatively small hole at a place where the double floor needs to be reinforced and repaired, and reinforcement of the double floor using the same.・ To provide repair methods.
Furthermore, the object of the present invention is to provide a double floor that can minimize material loss, and can provide stable and strong reinforcement / repair with good workability and relatively low cost even if the number of supporting legs is small. An object of the present invention is to provide a reinforcement / repair method and a double-floor support leg that can be used advantageously.
Another object of the present invention is that it is possible to install a reinforcing support leg at an arbitrary position from the floor after the double floor construction. Therefore, after the double floor construction, the partition position is marked on the floor panel, Even if you are not a skilled worker, you can easily construct the reinforcement support legs by the floor advance construction method, so that the partition can be placed at any position, and the addition of the partition can be easily handled, It is in providing the construction method of the double floor using it.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a leg and a hollow part that can be contracted and expanded in the lateral direction or expandable are formed in the upper part, and an outer surface of the hollow part is formed at a predetermined position. The lower part than the upper part A step portion that extends in the lateral direction is formed, and includes a support member that is mounted on the upper portion of the leg body so as to be adjustable in height; and a fitting member that is inserted into the hollow portion of the support member. A double floor support leg is provided.
In a preferred embodiment in which reinforcement is performed by forming a minimum number of holes in a place where reinforcement / repair of the double floor is necessary, the leg body is rotatable to the floor contact base and the floor contact base. A leg member having a screw part at least at the upper part, the lower part of the support member being screwed into the screw part of the leg member, and the largest part of the floor contact base being the hollow part It has an outer dimension less than the size of the part.
[0012]
In a more preferred specific embodiment, the hollow portion of the support member is formed in a substantially cylindrical shape having a plurality of slits formed in the axial direction, and the fitting member is disposed inside the hollow portion of the support member. It has an outer shape substantially equal to the shape, and is formed in a substantially cylindrical shape having a central through hole in the axial direction. Moreover, it is preferable to form the protrusion part inserted in the slit formed in the hollow part of the said supporting member in the outer peripheral surface predetermined position of the said fitting member.
In order to further improve workability, one or a plurality of groove portions can be formed in an annular shape on the outer peripheral surface of the hollow portion of the support member. In order to turn the leg member so that the level of the support member can be adjusted, it is preferable to form an engaging portion for engaging the rotary tool on the surface facing upward of the leg member. .
[0013]
Furthermore, according to the present invention, there is also provided a method for reinforcing and repairing a double floor using the support legs as described above. The method is a method of reinforcing or repairing an existing double floor, and a hole having a size approximately equal to the outer dimension of the upper portion of the support member of the support leg to be used is provided at a place where the existing double floor is to be reinforced or repaired. The step of inserting the assembly of the leg of the support leg and the support member into the hole, and the lower edge of the hole of the double floor is supported by the step portion of the support member. Adjusting, the step of inserting the fitting member into the hollow portion of the support member, and injecting the adhesive to fix the support member and the side surface of the hole of the double floor, the fitting member and the upper part of the leg. It is characterized by including the process to perform.
When a floor finishing material is constructed on an existing double floor, and a hole is made in such a double floor, a makeup finish corresponding to the floor finishing material is applied to the upper portion of the hole with a repair material.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The double floor support leg according to the present invention is a hollow that can be contracted and expanded in the lateral direction or expandable on the upper part of the support member for supporting the floor panel that is mounted on the upper part of the leg so as to be adjustable in height. Part is formed, and the outer surface of the hollow part is at a predetermined position. The lower part than the upper part A stepped portion extending in the lateral direction is formed. Therefore, for example, after making a hole having the same size as the outer dimension of the hollow portion at a position where the existing double floor (or floor panel) is to be reinforced, the outer surface of the hollow portion is compressed by shrinking the hollow portion. By making the outer dimension of the stepped portion projecting at a predetermined position smaller than the hole of the double floor (or if the hollow portion is already formed in such a contracted state, it remains as it is. ), The support legs can be installed from above through the holes in the double floor. After the installation, by releasing the pressing force applied to the hollow part, the hollow part returns to its original state (outer dimensions) due to its elasticity (when the hollow part is already in a contracted state) Is fitted into the hole in the double floor by fitting and expanding the fitting member into the hollow portion after level adjustment). In this state, since the stepped portion is larger than the outer dimension of the hollow portion (the hole size of the double floor), the stepped portion can support the edge of the hole of the double floor. Then, after adjusting the height of the support member to a predetermined height position according to the floor level of the double floor, the adhesive is injected from the hole of the double floor and fitted into the hollow portion of the support member. By inserting the member, the support member and the side surface of the hole of the double floor, the fitting member, and the upper part of the leg can be fixed.
[0015]
That is, the double-floor support leg of the present invention is characterized in that it can be installed from above through a hole formed in an existing double floor (or floor panel).
The conventional unit support legs are all configured to be installed from below the floor panel. Therefore, when reinforcing or repairing an existing double floor, a large hole is formed in the portion, and the hole and It was necessary to dispose unit support legs at at least two locations on the opposite edges of the backfill plate.
On the other hand, when the double-floor support leg of the present invention is used, if the minimum necessary hole corresponding to the outer dimension of the hollow portion of the support leg is provided in a place where the double floor needs to be reinforced / repaired, Well, only one support leg is used in that portion, and it is installed from above through the hole. Therefore, the material loss can be minimized, and even if the number of supporting legs is small, stable and strong reinforcement and repair can be performed with good workability and at a relatively low cost. Further, in the conventional reinforcing / repairing method, it is necessary to make a large hole in the floor panel, and thus the position of the reinforcing portion is limited. However, when the support leg for the double floor according to the present invention is used, such a limitation is hardly applied. It will not be received, increasing the degree of freedom of reinforcement points (installation points).
[0016]
【Example】
The present invention will be described more specifically below with reference to the preferred embodiments shown in the accompanying drawings.
FIGS. 1 to 3 show an embodiment of a support leg for a double floor according to the present invention, FIG. 1 is an exploded perspective view thereof, and FIG. 2 is a partial cross-sectional view showing an attachment mode of a floor contact base and a leg member. FIG. 3 shows the bottom surface of the floor contact base.
The support leg 1 includes a leg body 2 including a floor contact base 21 and a leg member (support bolt) 25 that is rotatably provided on the floor contact base, and a nut 37 fitted to a cylindrical lower portion 35. The support member 3 is formed, and the fitting member 4 is inserted into the upper hollow portion 31 of the support member.
[0017]
The floor contact base (elastic pedestal) 21 is made of a relatively hard, low repulsive elastic material such as rubber or synthetic resin, and is just-fitting to the floor surface of a foundation floor such as a concrete slab, and is also anti-vibration. It is supposed to fulfill its function. A non-penetrating central hole 22 for inserting the proximal end round bar portion 27 of the support bolt 25 is formed in the central portion of the upper surface as shown in FIG. In addition, as shown in FIG. 3, a plurality of (four in the illustrated example) annular projections 23 project from the lower surface of the floor-contact base 21 to reduce the installation area with the foundation floor surface. In addition, it is configured to ensure appropriate elasticity (sinking) and further improve the vibration and sound insulation performance. Such protrusions may not be formed, or may be formed in an arbitrary shape such as at least 3 or more, preferably 4 substantially hemispherical protrusions or cylindrical protrusions. However, in the case where the protrusion is provided, it is preferable that the protrusion is not formed on the support leg shaft center to which the load is transmitted to the floor contact base. This is because when the protrusion is formed on the bottom surface of the flooring base on the support leg axis, only the same floor impact sound level reduction as when the bottom surface is made flat can be obtained.
[0018]
On the other hand, the metal support bolt 25 is integrally provided with an annular flange portion 26 projecting laterally on the outer peripheral surface at a position spaced apart from the lower end by a predetermined distance, and a screw portion is formed above the flange portion. Further, the base end portion 27 below the flange portion 26 is formed as a round bar portion having a circular cross section, and a bulging portion 28 is formed at the lower end of the base end round bar portion 27. Further, the top end surface of the support bolt 25 is a groove portion 29 constituting an engaging portion for engaging the tip of a rotating tool such as a screwdriver or an electric screwdriver (in the example shown, a minus groove, but a plus groove or a square shape). It may be a recessed part). Then, by inserting the base end round bar portion 27 of the support bolt 25 into the center hole 22 of the floor contact base 21 via the washer 24, the support bolt 25 uses the flange portion 26 as the support portion and the floor contact base. 21 is in a state of being erected so as to be rotatable. Further, a bulging portion 28 is formed at the lower end of the base end round bar portion 27 of the support bolt 25, and the base end round bar portion 27 of the support bolt 25 is once inserted into the center hole 22 of the floor contact base 21. It is made difficult to get out later. In addition, the length of the base end round bar part 27 is shallower than the depth of the central hole 22 of the floor-contact base 21, and the length of the air chamber S is formed below the depth. By providing the air chamber S in the lower portion of the base end round bar portion 27 in this way, the air chamber S functions as an air cushion and the vibration isolation effect is further improved. However, the air chamber may not be provided. . Further, it is preferable that a lubricant such as grease is applied to the inner surface of the center hole 22 of the floor contact base 21 so that the support bolt 25 can be smoothly rotated, and the air chamber S is sealed in an airtight state. .
[0019]
The support member 3 includes an upper hollow portion 31 and a cylindrical lower portion 35. The hollow portion 31 is formed in a substantially cylindrical shape in which a plurality of (in the illustrated example, eight) slits 32 are formed in the axial direction, and can be contracted in the lateral direction by applying a pressing force (and further expandable). ). Further, a stepped portion 33 extending in the lateral direction is formed at a predetermined position on the outer peripheral surface of the hollow portion 31, and the stepped portion 33 is configured to support the edge of the hole formed in the floor panel. The outer diameter of the stepped portion 33 is set to a dimension that is equal to or slightly smaller than the original outer diameter of the upper portion of the hollow portion 31 when the upper portion of the hollow portion 31 is contracted inward. By making the distance from the upper end of the hollow portion 31 to the stepped portion 33 the same as the thickness of the floor panel, in the state where the edge of the hole of the floor panel is supported by the stepped portion 33, the upper end surface of the hollow portion 31 and the floor The panel surface is flush. Furthermore, a plurality of (in the illustrated example, four) groove portions 34 are formed in an annular shape on the outer peripheral surface of the hollow portion 31 above the stepped portion 33. These groove portions 34 act as an adhesive flow path and an adhesive reservoir between the hole side surface of the floor panel and the outer peripheral surface of the hollow portion 31 when the adhesive is injected to increase the bonding strength between them. For example, it can be used as a guide when the hollow portion is contracted by winding a thread, a string or the like around the upper groove portion 34.
[0020]
On the other hand, a central through hole 36 for fitting a nut 37 is formed in the cylindrical lower portion 35 of the support member 3. The outer peripheral surface of the nut 37 is knurled, and is configured to fit firmly without coming out when fitted into the central through hole 36 of the cylindrical lower portion 35, and the knurled groove portion. Acts as an adhesive penetration path and an adhesive reservoir and contributes to an increase in the bonding strength between the support member 3 and the nut 37 by the adhesive. Also, a flange 38 that extends in the lateral direction is formed at the lower end of the nut 37, and the flange 38 serves to support the lower end surface of the support member 3.
As shown in FIG. 1, the support member 3 and the nut 37 can be formed separately from a hard, high-strength material such as plastic or metal, but the metal nut and the plastic support member are integrated by insert molding. It can also be formed. In that case, the nut 37 does not necessarily have to be knurled on its outer peripheral surface, or may be formed with other joining strength enhancing means such as a claw portion.
The external dimension relationship between the support member 3 and the floor contact base 21 is configured such that the largest lower outer diameter of the floor contact base 21 is equal to or slightly smaller than the outer diameter of the hollow portion 31 of the support member 3. Has been.
[0021]
The fitting member 4 is made of an appropriate material such as plastic or rubber, and is a cylinder in which a central through hole 42 having a size substantially equal to the central through hole 36 of the cylindrical lower portion 35 of the support member 3 is formed in the axial direction. On the outer peripheral surface of the main body 41, a plurality of widths (in the example shown, slits in the example shown) with a width equal to or slightly smaller than the width of the slits 32 at predetermined intervals in the circumferential direction at positions corresponding to the slits 32 of the support member 3. Eight (same number) protrusions 43 are formed. In the fitting member 4, the outer diameter of the cylindrical body 41 is substantially the same (preferably equal to or slightly larger) than the inner diameter of the hollow portion 31 of the support member 3, and the height of each protrusion 43 is the hollow portion 31. The outer dimensions of the hollow portion 31 are substantially the same (preferably equal to or slightly smaller) than the outer periphery of the insertion position of the hollow portion 31. The protrusion 43 is for preventing dripping of the adhesive to be injected from the outer peripheral surface of the support member, and the upper surface thereof needs to be positioned above the step portion 33 of the support member 3. When dripping of the agent does not become a problem, when the viscosity of the adhesive is high and difficult to sag, or when adopting a process sequence of fitting the fitting member 4 into the hollow portion 31 after injecting the adhesive into the hollow portion 31 It is not always necessary to provide the protruding portion.
[0022]
4 and 5 show how the assembly of the double-floor support leg 1 of the present invention shown in FIGS. 1 to 3 is attached to the floor panel 114. FIG. 4 shows the support leg as viewed from above. FIG. 5 is a partial cross-sectional side view.
At the time of construction, first, a hole 118 having a diameter equal to the outer diameter of the hollow portion 31 of the support member 3 is opened by a drill or the like at a position where the existing floor panel 114 is to be reinforced. Next, the nut 37 fitted in the center through hole 36 of the support member 3 is assembled by screwing onto the upper part of the support bolt 25 of the leg 2, and the height of the stepped portion 33 is slightly higher than the lower surface of the existing floor panel 114. As shown in FIG. 6, the height of the support member 3 that has been adjusted in advance so as to be lowered is compressed by the upper portion of the hollow portion 31 with a finger, or the upper groove portion 34 formed on the outer peripheral surface of the hollow portion 31. Wrap and tighten a thread or string (not shown). As a result, the upper portion of the hollow portion 31 of the support member 3 contracts as shown in FIG. 6 and the stepped portion 33 also contracts at the same time, so that the outer diameter of the hollow portion 31 (the diameter of the hole 118 of the floor panel 114) is equal. Since the outer diameter is slightly smaller, the assembly is inserted through the hole 118 of the floor panel 114 from above and installed on the foundation floor 111 as shown in FIG. When a finger is released from the upper part of the hollow part 31 of the support member 3 or a thread or string that has been wound and tightened is released, the hollow part 31 returns to its original outer diameter due to its elasticity, and the outer peripheral surface of the hollow part 31 is a floor panel. 114 is fitted into the hole 118.
[0023]
Thereafter, the tip of a rotary tool such as a screwdriver is fitted into the groove 29 on the top end surface of the support bolt 25 from above the floor panel 114 through the hollow portion 31, and the height of the support member 3 is adjusted by turning the support bolt 25. As shown in FIG. 5, the lower edge portion of the hole 118 of the floor panel 114 is supported by the step portion 33. In this state, after injecting the adhesive into the hollow portion 31, the fitting member 4 is inserted or the fitting member 4 is inserted into the hollow portion 31, and then the center through hole 42 of the fitting member 4 and An adhesive is injected into the slit 32 of the hollow portion 31 of the support member 3. Thereby, the space between the support member 3 and the fitting member 4 and the upper portion of the leg 2 (the upper portion of the support bolt 25) are fixed. Further, the adhesive permeates into the groove portion 34 formed on the outer peripheral surface of the hollow portion 31 from the slit 32 of the support member 3, and firmly bonds the support member 3 and the peripheral side surface of the hole 118 of the floor panel 114. Thus, the support leg 1 is assembled in the state shown in FIG. 5, and the support of the floor panel 114 at the installation location is reinforced.
[0024]
The double floor support leg of the present invention can be reinforced as shown in FIGS. 4 to 6 after laying the floor panel 114, or before the floor panel is laid, the reinforcing position of the floor panel to be laid Although it can be used as a support leg for attaching to the floor in advance, the support leg is attached to the reinforcement position after the double floor construction (for example, in the case of an apartment house) after the construction of the floor finish material, and the reinforcement Therefore, it can be suitably used. In this case, it is possible to attach a hole to the double floor as it is without peeling off the floor finishing material as in the prior art.
That is, for example, when the floor finishing material 119 is laid on the floor panel 114 as shown in FIG. 7, a hole 118a penetrating them is formed, and the construction method described with reference to FIGS. After attaching the support legs 1 in the same manner as described above, a decorative finish is performed on the hole 118a with the repair finishing material 120 that is the same as or similar to the floor finishing material 119.
[0025]
8 and 9 show another embodiment of the support leg for the double floor according to the present invention.
In the case of the support leg 1a according to this embodiment, the leg 2a, the support member 3a, and the fitting member 4a are configured in the same manner as in the above-described embodiment. A female threaded portion is formed in the central through hole 36a of the lower portion 35a, no nut is fitted, and no protruding portion is formed on the outer peripheral surface of the cylindrical main body 41a having the central through hole 42a of the fitting member 4a. Is a point. The upper part of the support member 3a is formed in the hollow part 31a in which a plurality of slits 32a are formed in the axial direction, and the step part 33a extending in the lateral direction is formed at a predetermined position on the outer peripheral surface. It is the same. A groove 34a having a zigzag cross section is formed on the outer peripheral surface of the upper half of the hollow portion 31a. Further, the mounting manner of the support bolt 25a and the floor contact base 21a is the same as that shown in FIG. 2, but between the flange portion 26a of the support bolt 25a and the floor contact base 21a as in this embodiment. A washer may not be interposed. In such a case, it is preferable to form the flange portion 26a slightly larger. In addition, the external dimension relationship of the level | step-difference part 33a of the supporting member 3a and the floor-contact base 21a, etc. are the same as that of the case of the said Example.
[0026]
FIG. 10 shows still another embodiment of the double leg support leg of the present invention.
In the case of the support leg 1b of this embodiment, the leg member 25b of the leg 2b is formed in a hollow shape. That is, the leg member 25b made of metal, plastic or the like has a cylindrical portion 52 at the lower portion and a cylindrical screw portion 53 having a female screw portion 54 formed at the upper inner periphery with the reinforcing disc portion 51 at the substantially central portion as a boundary. A groove 29b for engaging the rotary tool is formed on the upper surface of the reinforcing disc portion 51. Further, a circular protrusion (columnar portion) 50 having a diameter equal to the inner diameter of the cylindrical portion 52 of the leg member 25b protrudes from the substantially central portion of the upper surface of the floor-contact base 21b made of an elastic material such as rubber. ing. The circular protrusion 50 is fitted into the cylindrical portion 52 when the leg member 25b is erected on the floor-contact base 21b via the washer 24b, and the leg member 25b stands vertically on the floor-base 21b. It can be installed and functions as a guide for allowing it to rotate in a vertical state.
[0027]
On the other hand, the support member 3b has a slit 32b and a screw 32 except that a male screw part 39 is formed on the outer peripheral surface of the cylindrical lower part 35b having the central through hole 36b. The male screw part 39 engages with the cylindrical screw part 53 of the leg member 25b. The structure of the hollow part 31b in which the step part 33b and the groove part 34b are formed is the same as that of the embodiment shown in FIG. The structure of the fitting member 4 is the same as that shown in FIG. Further, the external dimension relationship between the stepped portion 33b of the support member 3b and the floor contact base 21b is the same as that in the embodiment shown in FIG. In the case of the support leg 1b of this embodiment, as shown in FIG. 10, after being installed and attached through the hole 118 of the floor panel 114, the center through hole 42 of the fitting member 4 and the center of the cylindrical lower part 35b of the support member 3b are installed. The tip of a rotary tool such as a screwdriver is inserted from above through the through hole 36b, fitted into a groove 29b formed in the reinforcing disk portion 51 of the leg member 25b, and the height of the support member 3b is turned by turning the leg member 25b. Adjustments can be made.
[0028]
11 and 12 show still another embodiment of the double-floor support leg of the present invention.
In the case of the support leg 1c of this embodiment, the leg member 25c of the leg 2c is formed in a hollow shape in the same manner as the embodiment shown in FIG. 10, but the leg member made of metal, plastic or the like. The lower cylindrical portion 52c is provided with a lower cylindrical portion 52c and a cylindrical screw portion 53c having a female screw portion 54c formed on the upper inner periphery with a reinforcing disc portion 51c provided near the lower end portion of the lower cylindrical portion 25c. A circular protrusion 50c projecting substantially from the center of the upper surface of the floor contact base 21c is rotatably fitted without a gap, and a load is applied to the entire upper surface of the floor contact base 21c made of an elastic material such as rubber. It is configured to receive. A hexagonal recess 29c for engaging a rotary tool such as a hexagon wrench is formed on the upper surface of the reinforcing disc 51c. On the other hand, a chamfered portion 55 that expands upward is formed at the upper end of the upper cylindrical screw portion 53c, and is configured to receive an adhesive that hangs down along the outer peripheral surface of the support member 3c.
[0029]
On the other hand, the support member 3c has a male screw part 39c that is screwed with the cylindrical screw part 53c of the leg member 25c on the outer peripheral surface of the cylindrical lower part 35c having the central through hole 36c, and the upper part is formed of a slit 32c or The hollow portion 31c formed with the stepped portion 33c is the same as in the embodiment shown in FIG. 10, but in this embodiment, the cylindrical lower portion 35c is formed longer and the upper portion is 10 is different from the embodiment shown in FIG. 10 in that the bottom 56 of the wide and narrow triangular slit 32c is inclined so as to be lowered outward. In this way, by increasing the length of the slit 32c and inclining the lower bottom 56 to the outside, the flexibility of the hollow portion 31c is increased, and the adhesive injected into the hollow portion 31c is below the slit 32c. It flows downward through the bottom 56 and permeates the threaded portion of the male threaded portion 39c of the support member 3c and the female threaded portion 54c of the cylindrical threaded portion 53c via the chamfered portion 55 at the upper end of the leg member 25c, and joins them. . Therefore, in the case of the present embodiment, it is not necessary to provide a protruding portion on the outer peripheral surface of a fitting member (not shown) that is fitted into the hollow portion 31c. The outer diameter dimension relationship between the stepped portion 33c of the support member 3c, the floor contact base 21c, and the leg member 25c, the height adjustment method of the support member 3c, and the like are the same as those in the embodiment shown in FIG.
[0030]
FIG. 13 shows still another embodiment of the double leg support leg of the present invention.
In the case of the support leg 1d of this embodiment, the cylindrical lower portion 35d of the support member 3d has a large inner diameter, and an internal thread portion 58 is formed on the inner peripheral surface thereof. On the other hand, the leg body 2d serves as the leg member. Elasticity of rubber or the like in which a thick support bolt 25d made of metal, plastic or the like having an outer peripheral screw portion matching the female screw portion 58 and a concave portion 57 into which the base end round rod portion 27d of the support bolt 25d is fitted. 11 and 12 in that the hexagonal recess 29d for engaging a rotary tool such as a hexagon wrench is formed on the top end surface of the support bolt 25d. Although different from the example, other configurations are the same. By using such a thick support bolt 25d, the support strength can be increased and sufficient strength can be ensured even in the case of plastic. In the case of the present embodiment, the external dimension relationship between the support member 3d and the floor contact base 21d is such that the outer diameters of the cylindrical lower portion 35d of the support member 3d and the floor contact base 21d are substantially equal. It is configured to be equal to or slightly smaller than the outer diameter of the hollow portion 31d.
[0031]
As mentioned above, although the suitable Example of the support leg for double floors of this invention and the reinforcement | strengthening / repair method of a double floor using the same was described, this invention is not limited to an above-described Example, Various The design can be changed. For example, the slit formed in the hollow portion of the support member is not limited to an elongated rectangular shape as shown in FIG. 1 or an elongated triangular shape with a wide upper portion as shown in FIG. can do. The hollow part of the support member is sized so that the outer dimension of the stepped part can pass through the hole formed in the floor panel during installation, and can be expanded thereafter to support the lower edge of the hole in the floor panel by the stepped part. What is necessary is just to be comprised. Therefore, for example, the hollow portion may be formed into a substantially barrel shape having an upper opening whose upper portion is contracted in advance, and a plurality of cuts may be provided in the axial direction. In this case, the fitting member is inserted to expand the hollow portion, and the lower edge of the hole in the floor panel is supported by the stepped portion thus expanded. Moreover, when a fitting member is pushed in and a hollow part is pushed and expanded, it can also be set as a dimension relationship which presses a hollow part to the hole peripheral surface of a floor panel. In addition, the structure of the leg member can adopt various conventionally known structures. For example, the center hole of the floor contact base can be a through hole, and the shape of the floor contact base, the support member, and the fitting member can be various. It can also be made into arbitrary shapes, such as a square.
[0032]
【The invention's effect】
As described above, according to the double-floor support leg of the present invention and the double-floor reinforcement / repair method using the same, it is configured to be installed from above through a hole formed in the existing double floor. Therefore, it is only necessary to make the necessary minimum holes corresponding to the external dimensions of the hollow part of the support leg at the place where reinforcement and repair of the double floor are necessary, and only one support leg needs to be used in that part. Therefore, material loss can be minimized, stable and strong reinforcement and repair can be performed with good workability and low cost even if the number of supporting legs is small, and the appearance of the reinforced part is also greatly impaired. There is nothing. Furthermore, in the conventional reinforcement / repair method, the position of the reinforcement point is limited due to the necessity of making a large hole. However, when the support leg for the double floor of the present invention is used, such a limitation is hardly received. , The degree of freedom of reinforcement points (installation points) increases.
Furthermore, according to the present invention, it is possible to install the reinforcing support legs at any position from the floor after the double floor construction, and therefore, the partition position can be marked on the floor panel after the double floor construction. Therefore, it is easy to make inking, and even if it is not a skilled worker, the reinforcement support leg can be easily constructed by the floor advance construction method. As a result, it is possible to obtain the advantage that the repair time and the repair cost can be reduced, the partition can be arranged at any position, and the addition of the partition can be easily handled.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a double floor support leg according to the present invention.
FIG. 2 is a partial cross-sectional view showing a manner of attaching the floor contact base and the leg member of the support leg shown in FIG. 1;
FIG. 3 is a bottom view of the floor contact base shown in FIGS. 1 and 2;
4 is a plan view of the support leg as viewed from above with the support legs shown in FIG. 1 attached to the floor panel. FIG.
5 is a partial cross-sectional view taken along the line AA of FIG. 4 in a state where the support leg shown in FIG. 1 is attached to the floor panel.
6 is a partial cross-sectional side view showing a state in which the support leg shown in FIG. 1 is installed through the hole of the floor panel in a state where the hollow portion of the upper part of the support member is contracted.
7 is a partial cross-sectional side view showing a state in which the support leg shown in FIG. 1 is attached to a double-finished floor. FIG.
FIG. 8 is a plan view of the support leg as viewed from above with the support leg of another embodiment of the present invention attached to the floor panel.
9 is a partial cross-sectional side view taken along the line B-B in FIG. 8 in a state in which the support leg of another embodiment of the present invention is attached to the floor panel.
FIG. 10 is a partial cross-sectional side view of a state in which a support leg according to still another embodiment of the present invention is attached to a floor panel.
FIG. 11 is a plan view of a support leg according to another embodiment of the present invention.
12 is a partial cross-sectional side view taken along the line CC of the support leg of another embodiment of the present invention shown in FIG.
FIG. 13 is a partial cross-sectional side view of a support leg according to still another embodiment of the present invention.
FIG. 14 is an exploded perspective view of an example of a conventional unit support leg.
FIG. 15 is a partially broken perspective view showing a construction example of a conventional double floor.
FIG. 16 is a partial plan view of an arrangement form example of unit support legs and floor panels for explaining a reinforcing position of a double floor.
FIG. 17 is a partial plan view for explaining an example of reinforcement by a conventional unit support leg.
[Explanation of symbols]
1, 1a, 1b, 1c, 1d Double floor support legs
2,2a, 2b, 2c, 2d Leg
3, 3a, 3b, 3c, 3d Support member
4,4a Fitting member
21, 21a, 21b, 21c, 21d
25, 25a, 25b, 25c, 25d Leg member (support bolt)
29, 29a, 29b, 29c, 29d Groove
31, 31a, 31b, 31c, 31d Hollow part
32, 32a, 32b, 32c, 32d Slit
33, 33a, 33b, 33c, 33d Stepped portion
34, 34a, 34b Groove
35, 35a, 35b, 35c, 35d Cylindrical lower part
37 nuts
43 Protrusion
101, 101x unit support legs
111 Foundation floor (concrete slab)
114,114x floor panel
116, 118, 118a hole
119 Flooring material
120 Finishing material for repair

Claims

脚体と；上部に横方向に収縮及び拡張可能な、あるいは拡張可能な中空部が形成され、かつ、該中空部の外側面所定位置にその上部よりも下部が横方向に拡張する段差部が形成されており、上記脚体の上部に高さ調整自在に装着される支持部材と；該支持部材の上記中空部内に嵌挿される嵌め込み部材とからなることを特徴とする二重床用支持脚。A leg part; a hollow part that can be contracted and expanded in the lateral direction or expandable in the upper part, and a step part in which a lower part of the hollow part extends laterally at a predetermined position on the outer surface of the hollow part. A support leg for a double floor, comprising: a support member that is formed and is mounted on the upper portion of the leg body so as to be adjustable in height; and a fitting member that is fitted into the hollow portion of the support member. .

前記脚体が、接床基台と、該接床基台に回動自在に立設され、少なくとも上部にねじ部を有する脚部材とからなり、前記支持部材の下部が上記脚部材のねじ部に螺合されており、かつ、上記接床基台の最も大きな箇所が前記中空部の大きさ以下の外形寸法を有することを特徴とする請求項１に記載の二重床用支持脚。The leg body is composed of a floor contact base and a leg member that is rotatably provided on the floor contact base and has a screw portion at least at an upper portion, and a lower portion of the support member is a screw portion of the leg member. The support leg for double floors according to claim 1, wherein the largest part of the floor contact base has an outer dimension not larger than the size of the hollow part.

前記支持部材の中空部が軸線方向に複数本のスリットが形成された略円筒状に形成されていると共に、前記嵌め込み部材が、上記支持部材の中空部の内部形状と略等しい外形を有し、かつ、軸線方向の中心貫通孔を有する略円筒状に形成されていることを特徴とする請求項１又は２に記載の二重床用支持脚。The hollow portion of the support member is formed in a substantially cylindrical shape in which a plurality of slits are formed in the axial direction, and the fitting member has an outer shape substantially equal to the internal shape of the hollow portion of the support member, The support leg for a double floor according to claim 1 or 2, wherein the support leg is formed in a substantially cylindrical shape having a central through hole in the axial direction.

前記嵌め込み部材の外周面所定位置に、前記支持部材の中空部に形成されたスリット内に挿入される突出部が形成されていることを特徴とする請求項３に記載の二重床用支持脚。The support leg for double floors according to claim 3, wherein a protruding portion to be inserted into a slit formed in a hollow portion of the support member is formed at a predetermined position on the outer peripheral surface of the fitting member. .

前記支持部材の中空部外周面に環状に１本又は複数本の溝部が形成されていることを特徴とする請求項３又は４に記載の二重床用支持脚。5. The double-floor support leg according to claim 3, wherein one or more grooves are annularly formed on the outer peripheral surface of the hollow portion of the support member.

前記脚部材の上方に向いている面に回転用工具を係合させるための係合部が形成されていることを特徴とする請求項２乃至５のいずれか一項に記載の二重床用支持脚。The double floor according to any one of claims 2 to 5, wherein an engaging portion for engaging the rotary tool is formed on a surface of the leg member facing upward. Support leg.

既設の二重床を補強もしくは補修する方法であって、既設の二重床の補強もしくは補修したい箇所に、使用する支持脚の支持部材上部の外形寸法と略等しい大きさの孔を明ける工程、該孔に前記請求項１乃至６のいずれか一項に記載の支持脚の脚体と支持部材の組立体を挿入する工程、その支持部材の高さを二重床の上記孔の下縁部が支持部材の段差部で支持されるように調整する工程、上記支持部材の中空部に嵌め込み部材を嵌挿する工程、及び接着剤を注入して支持部材と二重床の孔部側面、嵌め込み部材及び脚体の上部とを固着する工程を含むことを特徴とする二重床の補強・補修方法。A method of reinforcing or repairing an existing double floor, the step of drilling a hole having a size approximately equal to the outer dimension of the upper support member of a support leg to be used in a place where the existing double floor is to be reinforced or repaired, The step of inserting the assembly of the leg of the support leg and the support member according to any one of claims 1 to 6 into the hole, the height of the support member being the lower edge of the hole of the double floor Adjusting the support member to be supported by the stepped portion of the support member, inserting the fitting member into the hollow portion of the support member, and injecting an adhesive into the side surface of the hole portion of the support member and the double floor, fitting A method for reinforcing / repairing a double floor, comprising a step of fixing a member and an upper part of a leg.

既設の二重床に床仕上材が施工されている場合に、さらに上記孔部上部に補修材で床仕上材に応じた化粧仕上げを施す工程を含むことを特徴とする請求項７に記載の方法。The floor finishing material according to claim 7, further comprising a step of applying a makeup finish according to the floor finishing material with a repair material on the upper portion of the hole when a floor finishing material is applied to an existing double floor. Method.