JP3592047B2

JP3592047B2 - Unit support leg

Info

Publication number: JP3592047B2
Application number: JP24352297A
Authority: JP
Inventors: 弘明平栗
Original assignee: 有限会社泰成電機工業
Priority date: 1997-08-26
Filing date: 1997-08-26
Publication date: 2004-11-24
Anticipated expiration: 2017-08-26
Also published as: JPH1162181A

Description

【０００１】
【発明の属する技術分野】
本発明は、ユニット支持脚及びそれに用いる支持ボルトに関し、特に戸建住宅や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するのに好適に用いられるユニット支持脚に関する。
【０００２】
【従来の技術】
従来、このような二重床を支持する装置としては、例えば特開平３−１７３４８号や実開平４−１１６５３７号などに、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受け板とからなるユニット支持脚により定尺の長方形及び／又は正方形の床パネルを支持する装置が開示されている。
従来知られているユニット支持脚の一例は図１３に示すとおりであり、ゴム、合成樹脂等の比較的硬質の弾性材料からなる接床基台１０２と、該基台１０２に回動自在に立設された支持ボルト１０４と、外周略中央部に側方に突設された環状の支持部１０９を有するレベル調整用ナット１０８と、中央部に上記レベル調整用ナット１０８の上部が嵌合される挿入孔１１１を有する正方形又は長方形の支持板１１０とから構成されている。
【０００３】
支持ボルト１０４は、下端部に側方に突出する環状の鍔部１０５が一体に設けられ、かつ上部にはネジ部１０６が形成されている。また支持ボルト１０４の頂端面には回転用工具先端を嵌め込むための溝部１０７が形成されている。そして、支持ボルト１０４の下端鍔部１０５を上記接床基台１０２の上方に開口する空洞部１０３に嵌挿することにより、支持ボルト１０４は接床基台１０２に回動自在に立設された状態となる。
一方、支持板１１０の挿入孔１１１上部は面取りされて拡開されている。上記レベル調整用ナット１０８はその支持部１０９が支持板１１０の下面に当接するまで該支持板１１０の挿入孔１１１に嵌合され、次いでその上部を拡開し、支持板挿入孔１１１の面取り部１１２に部分的に埋没させることによって、支持板１１０に強固に取り付けられる。それと共に、レベル調整用ナット１０８の上部には接着剤溜り１１３が形成される。なお、接着剤が流れ易いようにレベル調整用ナット１０８の内周ネジ部又は支持ボルト１０４の外周ネジ部には長手方向に１本又は数本の溝（図示せず）が形成されている。
【０００４】
このようにして支持板１１０の挿入孔１１１に嵌合されたレベル調整用ナット１０８に支持ボルト１０４のネジ部１０６上端部をねじ込むことによって、図１３に示すようにユニット支持脚１０１が組み立てられる。なお、支持板１１０の上面には両面粘着シート１１４が貼着されるか、又は接着層が形成されている。このような構造のユニット支持脚１０１は、支持ボルト１０４の頂端面に設けられた溝部１０７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１０４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１１０を介してレベル調整用ナット１０８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１０８が上下動し、支持板１１０により支持されている床パネルの床面レベルを調整することができる。
【０００５】
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１４に示すように、まず部屋壁又は間仕切１２１の所定の高さに沿って際根太（又は根太ユニット）１２２を設け、その上にパーティクルボード、積層合板、木質繊維板等から作製された床パネル１２３の一辺を支持する。際根太に接しない床パネル１２３の他の縁部は、所定のピッチで基礎床（コンクリートスラブ）１２０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１２３の取付は、ユニット支持脚１０１の支持板１１０上面に貼着した両面粘着シート１１４等を介して行い、床パネル敷設時に床パネル１２３を両面粘着シート１１４に圧着して仮固定しておく。ユニット支持脚１０１の支持板１１０の挿入孔１１１は床パネル１２３の縁部から露出した状態とし、この挿入孔１１１を通してドライバー等により支持ボルト１０４を回し、床パネル１２３のレベル（又は支持板１１０の上面位）を調節する。
【０００６】
隣り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１２３のレベル調整ができる所定の間隙を開けて載せ、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、床面レベルを調整した後、床パネル１２３からユニット支持脚１０１の支持板１１０に対して釘打ちし、床パネル１２３をユニット支持脚１０１に固定し、また接着剤溜り１１３から接着剤を注入し、レベル調整用ナット１０８と支持ボルト１０４との間を接着・固定する。その後、必要に応じて床パネル１２３の上にベニヤ板、木質繊維板等の捨張り材１２４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比較的剛性のある粘着テープを貼着した後、ＣＦシート、絨毯、畳、木質フロアー材等の床仕上げ材（図示せず）を敷設し、作業を完了する。
【０００７】
【発明が解決しようとする課題】
前記したような従来のユニット支持脚１０１の場合、支持ボルト１０４はその下端部の鍔部１０５と共に中実材から一体成形されているため、生産性が悪いと共に、コスト増大の大きな要因となっている。コストの面からは、床高が低い、即ち支持ボルト１０４の長さが短い場合にはそれ程大きな影響はないが、床高の高い二重床を施工する場合など、支持ボルト１０４の長さが長くなる程大きなコストアップの要因となっており、その対策が切実に求められている。
また、前記のようにして組み立てられたユニット支持脚１０１の基礎床１２０への固定は、従来、ユニット支持脚１０１の接床基台１０２の下面に接着剤を一個一個塗布して基礎床１２０の所定箇所に固着する方法が採用されているため、二重床の施工性が悪く、施工時間が長くなると共に施工コストも増大するなどの問題があった。
さらに中実材の支持ボルトを用いた場合、ゴム緩衝性の基台は介在しているものの、階上の床衝撃音や振動が階下に伝わり易く、特に集合住宅等においては遮音・制振効果のより一層の改善が求められている。
【０００８】
従って、本発明の目的は、生産性良くかつ低コストで製造でき、しかも長さが長いにも拘らず充分な強度を有し、特に床高の高い二重床の施工に好適に用いることができる支持ボルト及びそれを用いたユニット支持脚を提供することにある。
さらに本発明の目的は、遮音・制振効果に優れた二重床を作業性、施工性良く構築できる安価なユニット支持脚及びそれに用いる支持ボルトを提供し、もって特に床高の高い二重床の施工コストの低減、工期の短縮化を図ることにある。
【０００９】
【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、接床基台と、該基台に回動自在に立設された支持ボルトと、該支持ボルトの上部に螺合されたレベル調整用ナットを介して高さ調整自在に装着された支持板とからなるユニット支持脚において、上記支持ボルトが、その下端部又は下部に側方に拡張された鍔部が形成され、かつ円筒体本体が所定位置より下部の大径部から上部の該大径部よりも小さな直径の小径部になだらかな傾斜部を介して移行するように成形され、該小径部の少なくとも上部の外周面にネジ部が形成されていると共に頂端部に回転工具用係合部が形成された上下に貫通する中空円筒体から成ることを特徴とするユニット支持脚が提供される。
【００１０】
そして、前記接床基台は、垂直方向の貫通孔を有し、また、該接床基台の下面に上記貫通孔から側面に向けて延在する溝が形成されている。
また、接床基台には、支持ボルトの下端部を収容するための凹部が形成されている。好適には、前記支持ボルトの下端部に鍔部が形成され、接床基台内に該鍔部を受ける凹部が上方に開口するように形成され、該凹部の内壁部が上記貫通孔を囲繞する円筒状に形成されている。
【００１１】
さらに本発明によれば、下端部又は下部に側方に拡張された鍔部が形成され、かつ円筒体本体が所定位置より下部の大径部から上部の該大径部よりも小さな直径の小径部になだらかな傾斜部を介して移行するように成形され、該小径部の少なくとも上部の外周面にネジ部が形成されていると共に頂端部に回転工具用係合部が形成された中空円筒体から成るユニット支持脚用支持ボルトが提供される。好適な態様においては、上記回転工具用係合部は、小径部の直径よりも小さな直径の円筒部から成り、該円筒部の頂端面に少なくとも一対の対向する溝部が形成されている。別の好適な態様の回転工具用係合部は、小径部の直径よりも小さな外径寸法の外周部及び／又は内周部が多角形状、好ましくは六角形状の筒部から成る。該筒部の頂端面には、少なくとも一対の対向する溝部を有してもよいし、あるいは有さなくてもよい。
【００１２】
【発明の実施の形態】
本発明に係るユニット支持脚は、支持ボルトとして、下端部又は下部に側方に拡張された鍔部が座屈成形等により一体成形されていると共に、円筒体本体の所定位置より下部が大径部、上部が該大径部よりも小さな直径の小径部から成り、該大径部と小径部の間がなだらかな傾斜部となるように絞り成形され、該小径部の少なくとも上部の外周面にネジ部が形成された中空円筒体（中空パイプ）を用いることを特徴としている。従って、その作製が容易であると共に、長さが長い支持ボルトも低コストで製造でき、特に床高の高い二重床の施工に好適に用いることができる。
【００１３】
ところで、支持ボルトの長さを長くするためには、従来の支持ボルトを中間部で切断し、その間を中空パイプで接続することも考えられる。しかしながら、中空パイプの両端に支持ボルトの上半部及び下半部を接合する場合、接合強度の点から、中空パイプの両端部内周に雌ネジを切り、一旦螺着した後に加締め、溶接等により固着する方法を採用する必要があるが、この方法の場合、支持ボルトの生産性が低下すると共に、中空パイプとボルト部分の接合箇所に応力集中が起こり、この部分で折損する恐れがある。特に、支持ボルトが垂直ではなく若干傾いた状態に立設された場合、上記接合箇所で座屈を生じ易くなる。
これに対して、本発明の支持ボルトのように、中空パイプを素材として一体物として絞り成形により作製した場合、このような問題がなく、長さが長くても充分に高い強度を保持できる。また、二重床の床面荷重に耐える所定の強度を保持するためのコストは、従来の中実材の支持ボルトに比べて低くなる。
【００１４】
また、レベル調整用ナットの雌ネジ部は、規格に従った所定の呼び径にネジ切りされるので、支持ボルトの雄ネジ部もそれに対応した呼び径のものを使用する必要がある。しかしながら、床高さを高く、従って支持ボルトの長さを長くする場合、それに応じて強度的に充分に耐えるものとするために使用する中空パイプの太さを大きくすることが要求される。そのため、下部の太い中空パイプに上部の細い中空パイプを接合することも考えられるが、この場合にも前記したように接合箇所に応力集中が起こり、この部分で折損する恐れがある。このような問題も、本発明に従って絞り成形によって大径部と小径部の間がなだらかな傾斜部となるように一本の中空パイプから作製することにより解決され、種々の設置箇所に応じて支持ボルトに要求される種々の長さに容易に対応可能となる。また、絞り成形により中空パイプ素材の強度も増し、支持ボルトの長さが長くても充分に高い強度を保持できるようになる。なお、絞り成形は下部から上部にかけて何箇所かで段階的に行うこともでき、例えば小径部の下部の大径部を中径部と大径部の二部分に分け、大径部から中径部（小径部から見れば大径部）を経て小径部に至るようにすることもできる。
【００１５】
さらに、前記接床基台は、垂直方向の貫通孔を有し、かつその下面に該貫通孔から側面に向けて延在する溝が形成される。このような接床基台を有するユニット支持脚の場合、レベル調整用ナット上部に形成された接着剤溜りから接着剤を注入すると、接着剤はレベル調整用ナットと支持ボルトとの間に流入してその間を接着・固定するだけでなく、前記支持ボルトの中央貫通孔の中を流下して接床基台の下面に達し、該接床基台の下面に形成されている溝内に浸入して接床基台と基礎床との間も接着・固定する。従って、一回の接着剤注入作業によって、レベル調整用ナットと支持ボルトとの間の接着・固定と、接床基台と基礎床との間、さらには支持ボルトとの間の接着・固定を同時に行うことができ、接着剤注入の作業性が格段に向上する。
また、接床基台の貫通孔とその下面に形成された溝はエア・クッションの役割を果たすので、床に加えられる衝撃を緩和し、遮音・制振効果に優れている。さらにまた、床衝撃音の伝播を防止する効果においては、従来の中実の支持ボルトに比べて本発明のような中空の支持ボルトの方が優れている。
【００１６】
さらに、一旦組み込んだ支持ボルトが接床基台から外れたり、二重床構築後、地震の際の上下振動によって支持ボルトが接床基台から外れて二重床が倒壊する危険性を防止するために、前記支持ボルト及び／又は接床基台に抜け止め用の係合手段を設けることが好ましい。
このような抜け止め用の係合手段としては任意の手段を採用できるが、例えば、前記支持ボルトの下端部に鍔部を形成し、接床基台内に該鍔部を受けかつ掛止する凹部を形成するようにする。また、別の態様としては、円筒状の下端部が残るように支持ボルトの下部に鍔部を形成し、該支持ボルトの下端部が挿入される接床基台の貫通孔を、上方から下方にかけて、支持ボルトの下端部の外径と略等しい内径の小径部と該小径部よりも大きい内径の大径部とからなる貫通孔とし、支持ボルトの下端を拡開して接床基台の上記大径部の小径部近傍に拡開部が位置するようにしたり、あるいは抜け止め用のＥリング等を装着することができる。
【００１７】
【実施例】
以下、添付図面に示す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は、本発明のユニット支持脚の一実施例の接床基台１、該接床基台に回動自在に立設された支持ボルト１０、該支持ボルトの上部に螺合されるレベル調整用ナット２０及び該レベル調整用ナットが装着される支持板３０の組立状態を示している。
【００１８】
接床基台１はゴム、合成樹脂等の比較的硬質の弾性材料から作製されて、コンクリートスラブの基礎床１２０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。接床基台１は、大径の円形基部２と該基部２の略中央部に突設された受け部３とから成り、これらを中心部で貫通する垂直方向の貫通孔４が形成されている。そして、上記受け部３の貫通孔４の周囲には、支持ボルト１０の下端部に形成された鍔部１１を挿入するための環状の凹部５が上方に開口するように形成され、該凹部５の内壁部６は上記貫通孔４を囲繞する円筒状になっている。また、該凹部５の外壁部７の内側上端縁には内側に若干突出した係合部８が形成され、この係合部８は支持ボルト１０の鍔部１１を凹部５内に押え、支持ボルト１０の鍔部１１が凹部５から抜け出ないように作用する。さらに、接床基台１の円形基部２の下面には、上記貫通孔４から側面にかけて延在する複数（図示の例では４個）の溝９が放射状（十文字状）に形成されている。
【００１９】
一方、支持ボルト１０は、中央貫通孔１８を有する金属製中空パイプから作製され、下端部に側方に突出する環状の鍔部１１が座屈成形されていると共に、円筒体本体が下部の大径部１２から上部の該大径部１２よりも小さな直径の小径部１４になだらかな傾斜部１３を介して移行するように絞り成形され、さらに小径部１４の上端部は該小径部１４の直径よりも小さな直径の円筒部にさらに絞り成形されて回転工具用係合部１６が形成されている。また、上記小径部１４の外周面にはネジ部１５が形成されている。なお、支持ボルト１０の上端は床パネル１２３の上面以上に突出しないようにするので、支持ボルト１０の小径部１４の少なくとも上部に、レベル調整用ナット２０の下端から床パネル１２３の上面までの高さＨに概略相当する長さ以上のネジ部１５を形成すれば、充分にレベル調整を行うことができる。
【００２０】
図１に示す回転工具用係合部１６は、図２に示すように、円筒状に絞り成形され、頂端面に対向する一対の溝部１７が形成されたものであり（十文字状に溝部１７を形成してもよい）、該溝部１７にマイナスのドライバーの先端を嵌め込み、支持ボルト１０を回転させるように構成したものであるが、図３に示すように回転工具用係合部１６ａの外周面及び内周面を六角状に絞り成形したり、図４に示すように回転工具用係合部１６ｂの内周面が六角状となるように絞り成形し、六角レンチ等の回転用工具の先端を嵌め込めるようにすることもできる。これらの場合、頂端面の溝部１７は形成しても形成しなくてもよいが、形成した場合には六角レンチとドライバーの両方が使用可能となる。
【００２１】
レベル調整用ナット２０は、図５及び図６に示すように、上記支持ボルト１０のネジ部１５の径と対応する内径の内周ネジ部２２を有する雌ネジ部２１と、該雌ネジ部２１の内径よりも大きな内径の上部の円筒部２４とから成り、該円筒部２４の略中間部に側方に突出する環状の支持部２５が座屈成形により形成されている。また、雌ネジ部２１の内周ネジ部２２には、ネジ山を切断するように軸線方向に１本又は複数本（図示の例では２本）の溝２３が形成されている。なお、図示の例では溝２３は内周ネジ部２２の上端から下方の所定位置までネジ山の一部を切断するように形成されているが、内周ネジ部２２の上端から下端にかけて貫通した溝を形成してもよい。但し、レベル調整用ナット２０内に注入する接着剤のタレを防止するためには、溝の長さを内周ネジ部２２の上端から下端近傍までに止めて、図５に示すような非貫通の溝２３とすることが好ましい。また、レベル調整用ナット２０の溝２３に代えて、あるいはそれに加えて、支持ボルト１０のネジ部１５の上端部に軸線方向に溝を形成してもよい。
【００２２】
上記レベル調整用ナット２０の支持板３０への取付けは従来通りでよい。すなわち、パーティクルボード、木質繊維板、木材等から作製された正方形又は長方形の支持板３０の挿入孔３１上部は面取りされて拡開され、挿入孔３１を除く支持板３０の上面全面には粘着層３３が形成されている。上記レベル調整用ナット２０はその支持部２５が支持板３０の下面に当接するまで該支持板３０の挿入孔３１に嵌合され、次いでその上部を拡開することにより、あるいはさらに支持板挿入孔３１の面取り部３２に部分的に埋没させることによって、支持板３０に強固に取り付けられる。それと共に、レベル調整用ナット２０の上部には接着剤溜り３４が形成される。なお、支持ボルト１０の上端部の回転工具用係合部１６は、小径部１４よりも小さな直径となるように絞り成形せず、図１１に示す従来の回転工具用係合部の場合と同様に単に頂端面に溝部を形成するだけでもよいが、図１に示すように絞り成形によって回転工具用係合部１６の外形寸法を小径部１４の直径よりも小さくした方が、接着剤溜り３４がより大きな空間となり、接着剤注入作業が容易となるので好ましい。また、図１及び図５に示すように、レベル調整用ナット２０の円筒部２４の内径を雌ネジ部２１の内径よりも大きくすることにより、注入した接着剤が支持ボルト１０のネジ部１５とレベル調整用ナット２０の雌ネジ部２１の螺合部にスムーズに浸透し易くなるので好ましい。
【００２３】
上記のように支持板３０に装着されたレベル調整用ナット２０の雌ネジ部２１を、下端鍔部１１が接床基台１の凹部５内に回動自在に嵌め込まれた支持ボルト１０の小径部１４上部に螺合することにより、図１に示すようにユニット支持脚が組み立てられている。
このようにして組み立てられた本発明のユニット支持脚を用い、その支持板３０によって床パネル１２３を支持した状態に床パネルの敷設を行う二重床の施工方法は、図１３及び図１４を参照して説明した従来の施工方法と同様であり、その説明は省略する。但し、本発明のユニット支持脚を用いた場合、後述するように、一回の接着剤注入作業により、レベル調整用ナット２０と支持ボルト１０との間の接着・固定だけでなく、接床基台１と基礎床１２０との間、さらには支持ボルト１０との間も接着・固定できる。なお、接床基台１の下面に形成された溝９の長さは、必ずしも貫通孔４から円形基部２の側面に至る長さとしないでも、その途中までの長さとしても接着剤が溝に侵入するので、接床基台１と基礎床１２０との間の接着・固定は可能となる。但し、溝の長さによっては接着・固定力が弱くなる。
【００２４】
図７及び図８はレベル調整用ナットの他の変形例を示し、この実施例のレベル調整用ナット２０ａの場合、雌ネジ部２１ａの下端部に側方に突出する環状の支持部２５ａが一体成形され、また、雌ネジ部２１ａの上部に内径が雌ネジ部２１ａの内径よりも大きく外径が同一の円筒部２４ａが形成されている点において、前記図５及び図６に示すレベル調整用ナット２０と異なる。このような態様においても、レベル調整用ナット２０ａの上部により大きな空間の接着剤溜りを形成することができる。なお、雌ネジ部２１ａの内周ネジ部２２ａの上端から下方所定位置まで軸線方向に１本又は複数本（図示の例では２本）の溝２３ａを形成する点、及び支持板への装着態様は、図１及び図５に示す実施例と同様である。
【００２５】
図９及び図１０は、本発明のユニット支持脚の別の実施例を示し、図９は支持ボルト下部と接床基台の取付状態、図１０は接床基台の斜視図を示している。
この実施例の場合、接床基台１ａの円形基部２ａの下面に貫通孔４ａから側面にかけて延在する４個の溝９ａが放射状（十文字状）に形成されていることは前記した実施例と同様であるが、受け部３ａの上部に内側に折曲した複数（図示の例では４個）の係合部８ａが突設され、該係合部８ａの内側に支持ボルト１０ａの鍔部１１ａを受ける凹部５ａが形成されている点において前記した実施例とは異なる。
この実施例の場合、支持ボルト１０ａの大径部１２ａの下端部が座屈成形されて下端に鍔部１１ａが形成され、この鍔部１１ａを上記接床基台１ａの凹部５ａに挿入、配座させることにより、支持ボルト１０ａが接床基台１ａに回動自在に立設されると共に、上記係合部８ａにより支持ボルト１０ａの接床基台１ａからの抜けが防止される。
【００２６】
図１１は、本発明のユニット支持脚の他の実施例の支持ボルト下部と接床基台の取付状態を示している。
この実施例においては、接床基台１ｂの受け部３ｂに形成された支持ボルト１０ｂの外径と略等しい内径の貫通孔４ｂの下部に、該貫通孔４ｂよりも大きい内径の凹部（貫通孔大径部）５ｂが形成され、貫通孔４ｂの下部に段差部が形成されるように構成されている。なお、接床基台１ｂの円形基部２ｂの下面に、上記凹部５ｂから側面にかけて延在する複数（図示の例では４個）の溝９ｂが放射状（十文字状）に形成されていることは、前記実施例と同様である。
一方、支持ボルト１０ｂは、中央貫通孔１８ｂを有する中空パイプから作製され、大径部１２ｂの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鍔部１１ｂが座屈成形され、接床基台１ｂに対する荷重受面が大きくなるように構成されている。そして、支持ボルト１０ｂの基端部１９ｂをワッシャ４０を介して上記接床基台１ｂの貫通孔４ｂに嵌挿し、基端部１９ｂ下端を拡開することにより、支持ボルト１０ｂは鍔部１１ｂを支持部として接床基台１ｂに回動自在に立設された状態となり、また拡開された基端部１９ｂ下端が基台１ｂの貫通孔４ｂ下部の凹部５ｂとの間の段差部に掛止されるため、接床基台１ｂからの支持ボルト１０ｂの抜けが防止される。
【００２７】
図１２は、本発明のユニット支持脚のさらに他の実施例の接床基台と支持ボルト下部の取付状態を示している。図１２に示すユニット支持脚は、接床基台１ｃの受け部３ｃに形成された貫通孔４ｃの下部に該貫通孔４ｃよりも大きい内径の凹部５ｃが形成され、また接床基台１ｃの円形基部２ｃの下面に、上記凹部５ｃから側面にかけて延在する複数（図示の例では４個）の溝９ｃが放射状に形成されている点において前記図１１に示す実施例と同じである。
一方、支持ボルト１０ｃは、大径部１２ｃの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鍔部１１ｃが座屈成形されている点は前記図１１に示す実施例と同じであるが、基端部１９ｃの先端部にＥリング４２を嵌め込むためのリング状溝４１が形成されている点において前記図１１に示す実施例と異なる。
この実施例の場合、支持ボルト１０ｃの基端部１９ｃを接床基台１ｃの貫通孔４ｃ内に挿入した後、リング状溝４１にＥリング４２を嵌め込むことにより、接床基台１ｃから支持ボルト１０ｃが抜け出ることが防止される。なお、支持ボルトの抜け止め手段としては、前記実施例のような手段に限定されることはなく、各種の手段が採用可能である。
【００２８】
前記いずれの実施例においても、支持ボルト１０，１０ａ，１０ｂ，１０ｃの中央貫通孔１８，１８ａ，１８ｂ，１８ｃと接床基台１，１ａ，１ｂ，１ｃの貫通孔４，４ａ，４ｂ，４ｃは連通しており、また接床基台１，１ａ，１ｂ，１ｃの貫通孔４，４ａ，４ｂ，４ｃと下面に形成された溝９，９ａ，９ｂ，９ｃも連通しているので、このようなユニット支持脚を用いて前記従来技術で説明したように床パネルの敷設及び床面レベルの調整を行った後、レベル調整用ナット上部に形成された接着剤溜り３４から接着剤を注入すると、接着剤はレベル調整用ナット２０，２０ａと支持ボルト１０，１０ａ，１０ｂ，１０ｃとの間に流入し、かつレベル調整用ナット２０，２０ａの溝２３，２３ａに浸透してそれらの螺合部を接着・固定するだけでなく、前記支持ボルト１０，１０ａ，１０ｂ，１０ｃの中央貫通孔１８，１８ａ，１８ｂ，１８ｃの中を流下して接床基台１，１ａ，１ｂ，１ｃの下面に達し、該接床基台１，１ａ，１ｂ，１ｃの下面に形成されている溝９，９ａ，９ｂ，９ｃ内に浸入して接床基台と基礎床との間、さらには接床基台と支持ボルトの間も接着・固定する。従って、一回の接着剤注入作業によって、レベル調整用ナットと支持ボルトとの間の接着・固定と、接床基台と基礎床及び支持ボルトとの間の接着・固定を同時に行うことができ、接着剤注入の作業性が格段に向上する。
また、接床基台１，１ａ，１ｂ，１ｃの貫通孔４，４ａ，４ｂ，４ｃとその下面に形成された溝９，９ａ，９ｂ，９ｃはエア・クッションの役割を果たすので、基礎床１２０に加えられる衝撃を緩和し、遮音・制振効果に優れている。
【００２９】
以上、本発明の好適な実施例について説明したが、本発明は前記実施例に限定されるものではなく、各種設計変更が可能である。
例えばユニット支持脚の支持板と床パネルの仮固定は、支持板上面及び／又は床パネルの下面縁部の所定箇所に、支持板の上面に載置される床パネルの少なくとも横ずれを防止するに充分な固定力を有する保留手段を設けることによって行うことができる。このような保留手段による接合力は、敷設された床パネルの横ずれや転倒等を生ずることなく床パネルをユニット支持脚の支持板上面に確実に固定するには充分であるが、一旦接合された床パネルを支持板から簡単に引き剥すことができる程度のものである。従って、上記保留手段の接合力によってユニット支持脚の支持板上に床パネルを載置、固定した状態に二重床を構築した後であっても、必要に応じて容易に床パネルを剥がし、床下での配線、配管等の交換作業や新設作業等を行うことができる。また、床パネル敷設時に床パネルの位置がずれて配置されたときにも、従来の接着力の強い両面粘着テープを支持板上面に貼着したユニット支持脚を用いた場合にはその配置ずれを直すのが容易ではなかったが、上記保留手段によって固定された場合には、床パネルを支持板から簡単に引き剥すことができるので、床パネルの配置ずれを簡単に直すことができる。このような保留手段による仮固定は、敷設する二重床のフロアー面の一部のみに適用することもできる。
【００３０】
前記保留手段としては、面ファスナーの雄部材（雌部材のパイルに引っ掛けるためのフック状等のエレメントを多数、基材に植設したものなど）と雌部材（雄部材のフックを引っ掛けるためのパイル状のエレメントを多数、基材に植設したものなど）、磁気シート（マグネットプレート）、又は繰返し着脱可能な粘着剤、あるいはこれらの組み合わせを使用できる。
前記繰り返し着脱可能な粘着剤、即ち着脱可能な程度の接着力を有し、しかも、着脱を繰返してもほとんど接着力が失われない接着効果を有する粘着剤としては、例えば、ポスト・イット（商標名、（株）住友スリーエム社製）で使用されている粘着剤を使用できる。
保留手段として面ファスナーを用いる場合、面ファスナーの雄部材及び雌部材のいずれか一方の部材をエレメントが上面となるようにその基材側を支持板上面に固着し、また他方の部材を上記と同様に、支持板上の面ファスナー部材と接する床パネルの下面縁部の所定箇所に固着する。
前記保留手段としてボンド磁石等の磁気シートを使用する場合、前記面ファスナーの場合と同様に、磁極の異なる２枚の磁気シートを支持板上面及び床パネルの下面縁部所定箇所に固着することもできる。
【００３１】
【発明の効果】
以上のように、本発明に係るユニット支持脚は、中空パイプを素材として、下部又は下端部に鍔部を座屈成形すると共に、下部の大径部とその上部の小径部の間がなだらかな傾斜部となるように絞り成形され、小径部の少なくとも上部外周面にネジ部を形成した支持ボルトを用いているため、その作製が容易であると共に、長さが長い支持ボルトも低コストで製造でき、特に床高の高い二重床の施工に好適に用いることができる。また、本発明の支持ボルトは中空パイプを素材として一体物として作製され、かつ大径部と小径部の間がなだらかな傾斜部となるように絞り成形されているため、支持ボルトの長さが長くても充分に高い強度を保持でき、二重床の床面荷重に耐える所定の強度を保持するためのコストは、従来の中実材の支持ボルトに比べて低くなる。しかも、レベル調整用ナットの雌ネジ部のネジ径が規格のものであっても、それに対応した径に支持ボルトの小径部の直径を絞り成形でき、支持ボルトの長さが長くなることによって強度上直径の大きな大径部が要求されても、支持ボルトに要求される種々の長さ及び径に容易に対応可能となる。
【００３２】
また、垂直方向の貫通孔を有し、かつその下面に該貫通孔から側面に向けて延在する溝が形成された接床基台を有するユニット支持脚の場合、レベル調整用ナット上部に形成された接着剤溜りから接着剤を注入する一回の接着剤注入作業によって、レベル調整用ナットと支持ボルトとの間の接着・固定と、接床基台と基礎床及び支持ボルトとの間の接着・固定を同時に行うことができ、接着剤注入の作業性が格段に向上する。また、接床基台の基部を大きくすることにより、基礎床との接着力を大きくできると共に、支持ボルトを安定して立設できる。
さらに、接床基台の貫通孔とその下面に形成された溝はエア・クッションの役割を果たすので、床に加えられる衝撃を緩和し、遮音・制振効果に優れている。さらにまた、本発明のような中空の支持ボルトを用いたユニット支持脚は、従来の中実の支持ボルトを用いたユニット支持脚に比べて、床衝撃音の伝播を防止する効果において優れている。
さらにまた、前記支持ボルトの下端部及び／又は接床基台に抜け止め用の係合手段を設けることにより、耐震性に優れた二重床構造を構築することができる。
【図面の簡単な説明】
【図１】本発明に係るユニット支持脚の一実施例の組立状態を示す部分破断側面図である。
【図２】図１に示す支持ボルトの平面図である。
【図３】支持ボルトの回転工具用係合部の他の実施例を示す平面図である。
【図４】支持ボルトの回転工具用係合部のさらに他の実施例を示す平面図である。
【図５】図１に示すレベル調整用ナットを示す部分破断側面図である。
【図６】図５のＡ−Ａ線矢視断面図である。
【図７】レベル調整用ナットの他の実施例を示す部分破断側面図である。
【図８】図７のＢ−Ｂ線矢視断面図である。
【図９】本発明に係るユニット支持脚の別の実施例の接床基台と支持ボルトの取付部の状態を示す部分破断側面図である。
【図１０】図９に示す接床基台の斜視図である。
【図１１】本発明に係るユニット支持脚の他の実施例の接床基台と支持ボルトの取付部の状態を示す部分破断側面図である。
【図１２】本発明に係るユニット支持脚のさらに他の実施例の接床基台と支持ボルトの取付部の状態を示す部分破断側面図である。
【図１３】従来のユニット支持脚の一例の断面図である。
【図１４】従来のユニット支持脚を用いて二重床の床パネルまで施工した状態を示す破断斜視図である。
【符号の説明】
１，１ａ，１ｂ，１ｃ接床基台
４，４ａ，４ｂ，４ｃ貫通孔
５，５ａ，５ｂ，５ｃ凹部
８，８ａ係合部
９，９ａ，９ｂ，９ｃ溝
１０，１０ａ，１０ｂ，１０ｃ支持ボルト
１１，１１ａ，１１ｂ，１１ｃ鍔部
１２，１２ａ，１２ｂ，１２ｃ大径部
１３傾斜部
１４小径部
１５ネジ部
１６，１６ａ，１６ｂ回転工具用係合部
１７溝部
１８，１８ａ，１８ｂ，１８ｃ中央貫通孔
２０，２０ａレベル調整用ナット
２１，２１ａ雌ネジ部
２４，２４ａ円筒部
２５，２５ａ支持部
３０支持板
３３粘着層
３４接着剤溜り
１０１ユニット支持脚
１０２接床基台
１０８レベル調整用ナット
１１０支持板
１２０基礎床（コンクリートスラブ）
１２３床パネル[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a unit support leg and a support bolt used therefor, and is particularly suitable for forming a space between an existing foundation floor and a double floor in various buildings such as a detached house and an apartment house. Used Unit support leg About.
[0002]
[Prior art]
Conventionally, as a device for supporting such a double floor, for example, Japanese Unexamined Patent Publication No. Hei 3-17348 and Japanese Unexamined Utility Model Publication No. Hei 4-116537 have attached a rod-shaped leg and an upper end of the rod-shaped leg so as to be vertically adjustable. A device for supporting a fixed-size rectangular and / or square floor panel by unit supporting legs comprising a receiving plate is disclosed.
An example of a conventionally known unit supporting leg is as shown in FIG. 13, and a floor base 102 made of a relatively hard elastic material such as rubber or synthetic resin and a rotatably standing upright on the base 102. A supporting bolt 104 provided, a level adjusting nut 108 having an annular supporting portion 109 projecting laterally at a substantially central portion of the outer periphery, and an upper portion of the level adjusting nut 108 is fitted at the central portion. And a square or rectangular support plate 110 having an insertion hole 111.
[0003]
The support bolt 104 is provided integrally with an annular flange 105 projecting laterally at a lower end portion, and a screw portion 106 is formed at an upper portion. A groove 107 is formed on the top end surface of the support bolt 104 for fitting the tip of the rotating tool. The lower end flange portion 105 of the support bolt 104 is inserted into the hollow portion 103 opening above the floor base 102 so that the support bolt 104 is rotatably mounted on the floor base 102. State.
On the other hand, the upper part of the insertion hole 111 of the support plate 110 is chamfered and expanded. The level adjusting nut 108 is fitted into the insertion hole 111 of the support plate 110 until the support portion 109 abuts on the lower surface of the support plate 110, and then the upper part thereof is expanded to form a chamfered portion of the support plate insertion hole 111. By being partially buried in 112, it is firmly attached to support plate 110. At the same time, an adhesive reservoir 113 is formed above the level adjusting nut 108. Note that one or several grooves (not shown) are formed in the longitudinal direction on the inner peripheral thread portion of the level adjusting nut 108 or the outer peripheral thread portion of the support bolt 104 so that the adhesive easily flows.
[0004]
By screwing the upper end of the screw portion 106 of the support bolt 104 into the level adjusting nut 108 fitted in the insertion hole 111 of the support plate 110 in this way, the unit support leg 101 is assembled as shown in FIG. Note that a double-sided pressure-sensitive adhesive sheet 114 is attached to the upper surface of the support plate 110 or an adhesive layer is formed. The unit support leg 101 having such a structure is constructed such that the support bolt 104 is rotated by fitting the tip of a rotary tool such as a screwdriver into a groove 107 provided on the top end surface of the support bolt 104 to rotate the support bolt 104. Since the load from the floor panel is applied to the level adjustment nut 108 via the support plate 110 and its rotation is suppressed, the level adjustment nut 108 moves up and down, and the floor panel supported by the support plate 110 Floor level can be adjusted.
[0005]
In the case of constructing a double floor using the unit supporting legs 101 assembled as described above, for example, as shown in FIG. 14, first, along a predetermined height of a room wall or a partition 121, A joist (or joist unit) 122 is provided, on which one side of a floor panel 123 made of a particle board, a laminated plywood, a wood fiber board or the like is supported. The other edge of the floor panel 123 not in contact with the joist is mounted on the unit supporting leg 101 arranged at a predetermined pitch on the base floor (concrete slab) 120 in a state of being held in a cantilever manner. The unit support leg 101 and the floor panel 123 are attached via a double-sided adhesive sheet 114 or the like attached to the upper surface of the support plate 110 of the unit support leg 101, and when the floor panel is laid, the floor panel 123 is pressed against the double-sided adhesive sheet 114. Temporarily fixed. The insertion hole 111 of the support plate 110 of the unit support leg 101 is exposed from the edge of the floor panel 123. The support bolt 104 is turned by a driver or the like through the insertion hole 111, and the level of the floor panel 123 (or the level of the support plate 110) is adjusted. Adjust the top position).
[0006]
Similarly, adjacent floor panels are mounted on the already installed unit supporting legs 101 with a predetermined gap allowing the level of the floor panel 123 to be adjusted, and similarly, the other unit supporting legs 101 are arranged and attached. Such a work is repeated for each floor panel, the floor panel is constructed in a predetermined area, the floor surface level is adjusted, and then the floor panel 123 is nailed to the support plate 110 of the unit support leg 101, so that the floor panel 123 is united. It is fixed to the support leg 101, and an adhesive is injected from an adhesive reservoir 113 to bond and fix between the level adjusting nut 108 and the support bolt 104. Thereafter, if necessary, a piling material 124 such as a plywood or a wood fiber board is laid on the floor panel 123, or a relatively rigid adhesive tape is attached so as to cover a gap between adjacent floor panels. After that, floor finishing materials (not shown) such as CF sheets, carpets, tatami mats, and wooden flooring materials are laid, and the operation is completed.
[0007]
[Problems to be solved by the invention]
In the case of the conventional unit support leg 101 as described above, since the support bolt 104 is integrally formed from a solid material together with the flange 105 at the lower end thereof, the productivity is poor and the cost increases. I have. In terms of cost, when the floor height is low, that is, when the length of the support bolt 104 is short, there is not so much effect. However, when the double floor with a high floor is constructed, the length of the support bolt 104 is small. As the length increases, the cost increases, and countermeasures are urgently required.
In addition, the unit support legs 101 assembled as described above are fixed to the base floor 120 by applying an adhesive to the lower surface of the floor support base 102 of the unit support legs 101 one by one. Since the method of adhering to a predetermined location is employed, there is a problem that the workability of the double floor is poor, the construction time is lengthened, and the construction cost is increased.
Furthermore, when using solid support bolts, the rubber shock-absorbing base is interposed, but floor impact sounds and vibrations on the floor are easily transmitted downstairs. There is a need for further improvement.
[0008]
Therefore, an object of the present invention is to provide a product with good productivity and low cost, and yet have sufficient strength despite its long length, and can be suitably used particularly for construction of a double floor having a high floor height. It is an object of the present invention to provide a support bolt that can be used and a unit support leg using the same.
A further object of the present invention is to provide an inexpensive unit supporting leg and a supporting bolt used therefor, which can construct a double floor excellent in sound insulation and vibration control effect with good workability and workability. The purpose of the present invention is to reduce the construction cost and the construction period.
[0009]
[Means for Solving the Problems]
To achieve the above object, according to the present invention, a floor support base, a support bolt rotatably erected on the base, and a level adjusting nut screwed on an upper portion of the support bolt In a unit support leg comprising a support plate which is mounted so as to be freely adjustable in height, the support bolt has a lower end portion or a lower end formed with a laterally expanded flange portion, and the cylindrical body has a predetermined shape. It is formed so as to transition from a large diameter portion below the position to a small diameter portion having a diameter smaller than the large diameter portion above through a gentle slope, and a screw portion is formed on at least an upper peripheral surface of the small diameter portion. And the engaging part for the rotary tool is formed at the top end Penetrate up and down A unit support leg comprising a hollow cylindrical body is provided.
[0010]
And The floor support has a vertical through-hole, and a groove extending from the through-hole toward the side surface is formed on the lower surface of the floor.
Also The floor base has a recess for accommodating the lower end of the support bolt. Preferably, a flange portion is formed at a lower end portion of the support bolt, and a concave portion for receiving the flange portion is formed in the floor support base so as to open upward, and an inner wall portion of the concave portion surrounds the through hole. It is formed in a cylindrical shape.
[0011]
Further, according to the present invention, a flange portion is formed at a lower end portion or a lower portion, which is laterally expanded, and the cylindrical body has a small diameter having a diameter smaller than a large diameter portion at an upper portion from a large diameter portion below a predetermined position. A hollow cylindrical body that is formed so as to transition to a portion through a gentle inclined portion, has a screw portion formed on at least the outer peripheral surface of the upper portion of the small diameter portion, and has a rotating tool engagement portion formed on the top end portion. And a support bolt for a unit support leg, comprising: In a preferred aspect, the rotary tool engaging portion is formed of a cylindrical portion having a diameter smaller than the diameter of the small diameter portion, and at least a pair of opposed grooves is formed on the top end surface of the cylindrical portion. In another preferred embodiment, the rotary tool engaging portion is formed of a cylindrical portion having a polygonal shape, preferably a hexagonal shape, in the outer peripheral portion and / or the inner peripheral portion having an outer diameter smaller than the diameter of the small diameter portion. The top end surface of the cylindrical portion may or may not have at least a pair of opposed grooves.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
In the unit support leg according to the present invention, a flange extending laterally at a lower end or a lower portion is integrally formed as a support bolt by buckling or the like, and a lower portion of the cylindrical body has a larger diameter than a predetermined position. Part, the upper part is composed of a small diameter part having a diameter smaller than the large diameter part, is drawn and formed so as to form a gentle slope between the large diameter part and the small diameter part, and at least an upper peripheral surface of the small diameter part is formed. It is characterized in that a hollow cylindrical body (hollow pipe) having a thread portion is used. Therefore, it can be easily manufactured and a long supporting bolt can be manufactured at low cost, and it can be suitably used particularly for construction of a double floor having a high floor height.
[0013]
By the way, in order to lengthen the length of the support bolt, it is conceivable to cut the conventional support bolt at an intermediate portion and connect the intermediate portion with a hollow pipe. However, when joining the upper and lower halves of the support bolt to both ends of the hollow pipe, from the viewpoint of joining strength, female threads are cut on the inner circumference of both ends of the hollow pipe, and once screwed, caulked, welded, etc. However, in this method, the productivity of the support bolt is reduced, and stress concentration occurs at the joint between the hollow pipe and the bolt portion, which may cause breakage at this portion. In particular, when the support bolt is erected not vertically but slightly inclined, buckling is likely to occur at the joint.
On the other hand, in the case where the hollow pipe is made as an integral body by drawing and forming like the support bolt of the present invention, there is no such a problem, and a sufficiently high strength can be maintained even if the length is long. Further, the cost for maintaining a predetermined strength to withstand the floor load of the double floor is lower than that of a conventional solid support bolt.
[0014]
Further, since the female thread portion of the level adjusting nut is threaded to a predetermined nominal diameter according to the standard, it is necessary to use a male screw portion of the supporting bolt having a nominal diameter corresponding thereto. However, when the floor height is increased, and thus the length of the support bolt is increased, it is necessary to increase the thickness of the hollow pipe used in order to withstand the strength sufficiently. For this reason, it is conceivable to join the upper thin hollow pipe to the lower thick hollow pipe. However, in this case as well, stress concentration occurs at the joint as described above, and there is a risk of breakage at this portion. Such a problem can also be solved by forming a single hollow pipe such that a portion between the large-diameter portion and the small-diameter portion has a gentle slope by drawing according to the present invention, and is supported according to various installation locations. It is possible to easily cope with various lengths required for the bolt. In addition, the strength of the hollow pipe material is increased by drawing, and a sufficiently high strength can be maintained even when the length of the support bolt is long. Note that drawing can be performed stepwise at several points from the lower part to the upper part.For example, the large diameter part at the lower part of the small diameter part is divided into two parts, a medium diameter part and a large diameter part, and the large diameter part to the medium diameter part. It is also possible to reach the small diameter portion via a portion (a large diameter portion as viewed from the small diameter portion).
[0015]
further The floor contact base has a vertical through-hole, and a groove extending from the through-hole toward the side surface is formed on the lower surface thereof. In the case of such a unit supporting leg having a floor base, when an adhesive is injected from an adhesive reservoir formed above the level adjusting nut, the adhesive flows between the level adjusting nut and the support bolt. In addition to bonding and fixing the gap between them, it flows down through the central through hole of the support bolt to reach the lower surface of the floor base, and enters into the groove formed on the lower surface of the floor base. Adhesion and fixation are also made between the floor base and the base floor. Therefore, by a single adhesive injection work, the bonding and fixing between the level adjustment nut and the support bolt, the bonding and fixing between the floor mating base and the base floor, and further, between the support bolt and the support floor are performed. It can be performed at the same time, and the workability of the adhesive injection is significantly improved.
Further, the through hole of the floor contact base and the groove formed on the lower surface thereof serve as an air cushion, so that the impact applied to the floor is reduced, and the sound insulation and vibration damping effects are excellent. Furthermore, the hollow support bolt of the present invention is superior to the conventional solid support bolt in the effect of preventing the propagation of floor impact sound.
[0016]
Furthermore, it is possible to prevent the risk that the installed support bolts will come off from the floor base and that the support bolts will fall off the floor base due to the vertical vibration during the earthquake after the double floor is built, and that the double floor will collapse. For this purpose, it is preferable to provide engaging means for preventing the support bolt and / or the floor contact base from coming off.
Any means can be adopted as such engaging means for retaining. For example, a flange is formed at the lower end of the support bolt, and the flange is received and latched in the floor support base. A recess is formed. Further, as another aspect, a flange portion is formed at a lower portion of the support bolt so that a cylindrical lower end portion remains, and a through hole of a floor base into which the lower end portion of the support bolt is inserted is formed from above to below. To a through hole consisting of a small-diameter portion having an inner diameter substantially equal to the outer diameter of the lower end portion of the support bolt and a large-diameter portion having an inner diameter larger than the small-diameter portion. The widened portion may be located near the small diameter portion of the large diameter portion, or an E-ring or the like for retaining may be attached.
[0017]
【Example】
Hereinafter, the present invention will be described more specifically with reference to the accompanying drawings.
FIG. 1 shows a floor support 1 according to an embodiment of the unit support leg of the present invention, a support bolt 10 rotatably provided on the floor support, and a level screwed on an upper portion of the support bolt. 2 shows an assembled state of an adjustment nut 20 and a support plate 30 to which the level adjustment nut is mounted.
[0018]
The floor base 1 is made of a relatively hard elastic material such as rubber or synthetic resin, and is adapted to just fit to the floor surface of the foundation floor 120 of the concrete slab and to perform the function of vibration isolation. The floor contact base 1 is composed of a large-diameter circular base 2 and a receiving portion 3 protruding from a substantially central portion of the base 2, and a vertical through-hole 4 penetrating these at the center is formed. I have. Around the through hole 4 of the receiving portion 3, an annular concave portion 5 for inserting a flange 11 formed at the lower end of the support bolt 10 is formed so as to open upward. Has a cylindrical shape surrounding the through hole 4. Further, an engaging portion 8 slightly protruding inward is formed at an inner upper end edge of the outer wall portion 7 of the concave portion 5. The engaging portion 8 presses the flange portion 11 of the support bolt 10 into the concave portion 5, and It acts so that the flange part 11 of 10 does not come out of the recessed part 5. Further, a plurality (four in the illustrated example) of grooves 9 extending from the through hole 4 to the side surface are formed radially (cross-shaped) on the lower surface of the circular base 2 of the floor base 1.
[0019]
On the other hand, the support bolt 10 is made of a metal hollow pipe having a central through-hole 18, and has an annular flange 11 buckled at the lower end and a cylindrical main body having a large lower portion. The upper portion of the small diameter portion 14 is formed by drawing from a diameter portion 12 to a small diameter portion 14 having a diameter smaller than the large diameter portion 12 through a gentle slope 13. The rotary tool engaging portion 16 is further formed by drawing on a cylindrical portion having a smaller diameter. A screw portion 15 is formed on the outer peripheral surface of the small diameter portion 14. Since the upper end of the support bolt 10 does not protrude beyond the upper surface of the floor panel 123, the height from the lower end of the level adjusting nut 20 to the upper surface of the floor panel 123 is provided at least above the small diameter portion 14 of the support bolt 10. If the screw portion 15 having a length substantially equal to the length H is formed, the level can be sufficiently adjusted.
[0020]
As shown in FIG. 2, the engaging portion 16 for the rotary tool shown in FIG. 1 is formed by drawing in a cylindrical shape, and is formed with a pair of grooves 17 facing the top end face. It is also possible to insert the tip of a flathead screwdriver into the groove 17 to rotate the support bolt 10. However, as shown in FIG. 3, the outer peripheral surface of the rotary tool engaging portion 16a is formed. And, the inner peripheral surface is drawn and formed into a hexagonal shape, or as shown in FIG. 4, the inner peripheral surface of the rotary tool engaging portion 16b is drawn and formed into a hexagonal shape, and the tip of a rotary tool such as a hexagon wrench is formed. Can be fitted. In these cases, the groove 17 on the top end face may or may not be formed, but if formed, both a hexagon wrench and a screwdriver can be used.
[0021]
As shown in FIGS. 5 and 6, the level adjusting nut 20 includes a female screw portion 21 having an inner peripheral screw portion 22 having an inner diameter corresponding to the diameter of the screw portion 15 of the support bolt 10, and the female screw portion 21. And an upper cylindrical portion 24 having an inner diameter larger than the inner diameter of the cylindrical portion 24. An annular support portion 25 projecting laterally is formed at a substantially intermediate portion of the cylindrical portion 24 by buckling. One or more (two in the illustrated example) grooves 23 are formed in the inner peripheral thread portion 22 of the female thread portion 21 in the axial direction so as to cut the thread. In the illustrated example, the groove 23 is formed so as to cut a part of the screw thread from the upper end of the inner peripheral thread portion 22 to a predetermined position below, but penetrates from the upper end to the lower end of the inner peripheral thread portion 22. A groove may be formed. However, in order to prevent dripping of the adhesive injected into the level adjusting nut 20, the length of the groove is stopped from the upper end to the vicinity of the lower end of the inner peripheral threaded portion 22, and the non-penetration as shown in FIG. The groove 23 is preferably used. Further, instead of or in addition to the groove 23 of the level adjusting nut 20, a groove may be formed in the upper end portion of the screw portion 15 of the support bolt 10 in the axial direction.
[0022]
The level adjustment nut 20 may be attached to the support plate 30 in the same manner as in the related art. That is, the upper portion of the insertion hole 31 of the square or rectangular support plate 30 made of particle board, wood fiber board, wood, or the like is chamfered and expanded, and an adhesive layer is formed on the entire upper surface of the support plate 30 except for the insertion hole 31. 33 are formed. The level adjusting nut 20 is fitted into the insertion hole 31 of the support plate 30 until the support portion 25 abuts on the lower surface of the support plate 30, and then the upper part thereof is expanded, or the support plate insertion hole is further expanded. By being partially buried in the chamfered portion 32 of the base 31, it is firmly attached to the support plate 30. At the same time, an adhesive reservoir 34 is formed above the level adjusting nut 20. The rotary tool engaging portion 16 at the upper end of the support bolt 10 is not drawn so as to have a smaller diameter than the small diameter portion 14, and is similar to the conventional rotary tool engaging portion shown in FIG. The groove may be simply formed on the top end surface. However, as shown in FIG. 1, it is better to make the outer dimension of the rotary tool engaging portion 16 smaller than the diameter of the small diameter portion 14 by drawing, so that the adhesive pool 34 is formed. Is preferable because the space becomes larger and the work of injecting the adhesive becomes easy. Also, as shown in FIGS. 1 and 5, by making the inner diameter of the cylindrical portion 24 of the level adjusting nut 20 larger than the inner diameter of the female screw portion 21, the injected adhesive can be in contact with the screw portion 15 of the support bolt 10. This is preferable because it easily penetrates smoothly into the threaded portion of the female screw portion 21 of the level adjusting nut 20.
[0023]
The small diameter of the support bolt 10 in which the female thread portion 21 of the level adjusting nut 20 mounted on the support plate 30 as described above is rotatably fitted into the recess 5 of the floor base 1 with the lower end flange portion 11. By screwing into the upper part of the part 14, the unit supporting leg is assembled as shown in FIG.
See FIGS. 13 and 14 for the method of constructing a double floor in which the floor panel 123 is laid while the floor panel 123 is supported by the support plate 30 using the unit supporting legs of the present invention assembled in this manner. This is the same as the conventional construction method described above, and the description thereof is omitted. However, when the unit supporting leg of the present invention is used, as described later, not only the bonding and fixing between the level adjusting nut 20 and the supporting bolt 10 but also the Adhesion and fixation between the base 1 and the base floor 120, and also between the support bolts 10 are possible. The length of the groove 9 formed on the lower surface of the floor base 1 is not necessarily the length from the through hole 4 to the side surface of the circular base 2, but even if the length is halfway therethrough, the adhesive is formed in the groove. Since it invades, it is possible to adhere and fix the floor base 1 and the base floor 120 together. However, depending on the length of the groove, the bonding / fixing force is weak.
[0024]
FIGS. 7 and 8 show another modification of the level adjusting nut. In the case of the level adjusting nut 20a of this embodiment, an annular supporting portion 25a protruding laterally is integrally formed at the lower end of the female screw portion 21a. 5 and 6 in that a cylindrical portion 24a having an inner diameter larger than the inner diameter of the female screw portion 21a and having the same outer diameter is formed above the female screw portion 21a. Different from nut 20. Also in such a mode, an adhesive reservoir of a large space can be formed in the upper part of the level adjusting nut 20a. The point where one or more (two in the illustrated example) grooves 23a are formed in the axial direction from the upper end of the inner threaded portion 22a of the female threaded portion 21a to a predetermined lower position, and the mounting state on the support plate Is similar to the embodiment shown in FIGS.
[0025]
9 and 10 show another embodiment of the unit supporting leg of the present invention. FIG. 9 shows a mounting state of the lower part of the support bolt and the floor support base, and FIG. 10 shows a perspective view of the floor support base. .
In the case of this embodiment, four grooves 9a extending from the through hole 4a to the side surface are formed radially (cross-shaped) on the lower surface of the circular base 2a of the floor base 1a. Similarly, a plurality of (four in the illustrated example) engaging portions 8a projecting inward are protruded above the receiving portion 3a, and a flange portion 11a of the support bolt 10a is provided inside the engaging portion 8a. This embodiment differs from the above-described embodiment in that a concave portion 5a for receiving the same is formed.
In the case of this embodiment, the lower end of the large-diameter portion 12a of the support bolt 10a is formed by buckling to form a flange 11a at the lower end, and the flange 11a is inserted into the recess 5a of the floor contact base 1a and arranged. By sitting, the support bolt 10a is rotatably erected on the floor base 1a, and the engaging portion 8a prevents the support bolt 10a from coming off the floor base 1a.
[0026]
FIG. 11 shows a mounting state of the lower part of the support bolt and the floor support base of another embodiment of the unit support leg of the present invention.
In this embodiment, a recess having a larger inner diameter than the through hole 4b (a through hole) is formed below the through hole 4b having an inner diameter substantially equal to the outer diameter of the support bolt 10b formed in the receiving portion 3b of the floor base 1b. A large diameter portion 5b is formed, and a step portion is formed below the through hole 4b. Note that a plurality of (four in the illustrated example) grooves 9b extending from the concave portion 5b to the side surface are formed radially (cross-shaped) on the lower surface of the circular base 2b of the floor base 1b. This is the same as the above embodiment.
On the other hand, the support bolt 10b is made of a hollow pipe having a central through hole 18b, and an annular flange 11b projecting laterally to the outer peripheral surface at a position separated from the lower end of the large diameter portion 12b by a predetermined distance upward is formed by buckling. The load receiving surface with respect to the floor contact base 1b is configured to be large. The base end 19b of the support bolt 10b is inserted into the through-hole 4b of the floor base 1b through the washer 40, and the lower end of the base end 19b is expanded. As a support, it is in a state of being erected on the floor base 1b so as to be freely rotatable, and the lower end of the expanded base end 19b is hooked on a step between the recess 5b below the through hole 4b of the base 1b. Since the support bolt 10b is stopped, the support bolt 10b is prevented from coming off from the floor contact base 1b.
[0027]
FIG. 12 shows an attachment state of a floor support base and a lower portion of a support bolt in still another embodiment of the unit support leg of the present invention. In the unit support leg shown in FIG. 12, a recess 5c having an inner diameter larger than the through hole 4c is formed below the through hole 4c formed in the receiving portion 3c of the floor contact base 1c. This embodiment is the same as the embodiment shown in FIG. 11 in that a plurality of (four in the illustrated example) grooves 9c extending from the concave portion 5c to the side surface are radially formed on the lower surface of the circular base 2c.
On the other hand, the embodiment shown in FIG. 11 is that the support bolt 10c is formed by buckling an annular flange portion 11c projecting laterally on the outer peripheral surface at a position separated from the lower end of the large diameter portion 12c by a predetermined distance upward. 11 is different from the embodiment shown in FIG. 11 in that a ring-shaped groove 41 for fitting the E-ring 42 in the distal end portion of the base end portion 19c is formed.
In the case of this embodiment, after inserting the base end portion 19c of the support bolt 10c into the through hole 4c of the floor support base 1c, the E-ring 42 is fitted into the ring-shaped groove 41, so that the support floor 10c The support bolt 10c is prevented from coming off. The means for retaining the support bolt is not limited to the means described in the above embodiment, and various means can be adopted.
[0028]
In any of the above embodiments, the center through holes 18, 18a, 18b, 18c of the support bolts 10, 10a, 10b, 10c and the through holes 4, 4a, 4b, 4c of the floor mat bases 1, 1a, 1b, 1c. Are communicated with the through holes 4, 4a, 4b, 4c of the floor bases 1, 1a, 1b, 1c and the grooves 9, 9a, 9b, 9c formed on the lower surface. After laying the floor panel and adjusting the floor level as described in the related art using such a unit supporting leg, an adhesive is injected from an adhesive reservoir 34 formed above the level adjusting nut. The adhesive flows between the level adjusting nuts 20 and 20a and the support bolts 10, 10a, 10b and 10c, and penetrates into the grooves 23 and 23a of the level adjusting nuts 20 and 20a and engages with each other. Glue and fix Instead, it flows down through the central through-holes 18, 18a, 18b, 18c of the support bolts 10, 10a, 10b, 10c to reach the lower surfaces of the floor contact bases 1, 1a, 1b, 1c. It penetrates into the grooves 9, 9a, 9b, 9c formed on the lower surface of the bases 1, 1a, 1b, 1c and between the floor base and the base floor, and further between the floor base and the support bolts. Also glue and fix. Therefore, the bonding / fixing between the level adjusting nut and the support bolt and the bonding / fixing between the floor base, the base floor and the support bolt can be performed simultaneously by one adhesive injection operation. In addition, the workability of the injection of the adhesive is remarkably improved.
Further, the through holes 4, 4a, 4b, 4c of the floor bases 1, 1a, 1b, 1c and the grooves 9, 9a, 9b, 9c formed on the lower surface thereof serve as air cushions. The shock applied to the 120 is reduced, and the sound insulation and vibration damping effects are excellent.
[0029]
Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various design changes can be made.
For example, the temporary fixing of the support plate of the unit support leg and the floor panel is performed at a predetermined position on the upper surface of the support plate and / or the lower edge of the floor panel to prevent at least lateral displacement of the floor panel placed on the upper surface of the support plate. This can be achieved by providing a holding means having a sufficient fixing force. The joining force by such a retaining means is sufficient to securely fix the floor panel to the upper surface of the support plate of the unit supporting leg without causing the laid floor panel to shift sideways or fall down, but once joined. The floor panel can be easily peeled off from the support plate. Therefore, the floor panel is placed on the support plate of the unit support leg by the joining force of the holding means, even after the double floor is constructed in a fixed state, the floor panel is easily peeled off as necessary, It is possible to perform work such as replacement of wiring and pipes under the floor and new construction work. Also, when the floor panels are misaligned when laying the floor panels, the misalignment will still occur if the unit supporting legs with the conventional double-sided adhesive tape with strong adhesive force attached to the upper surface of the support plate are used. Although it was not easy to fix the floor panel, when the floor panel was fixed by the holding means, the floor panel could be easily peeled off from the support plate, so that the misalignment of the floor panel could be easily corrected. Such temporary fixing by the holding means can be applied to only a part of the floor surface of the double floor to be laid.
[0030]
The holding means includes a male member of a hook-and-loop fastener (a plurality of hook-shaped elements for hooking on a pile of a female member, for example, implanted in a base material) and a female member (pile for hooking a hook of a male member). Or a magnetic sheet (magnet plate), a repeatedly removable adhesive, or a combination thereof.
Examples of the adhesive that can be repeatedly attached and detached, that is, an adhesive having an adhesive strength of a detachable degree and an adhesive effect of hardly losing the adhesive force even when the attachment and detachment are repeated are, for example, Post-It (trademark) The adhesive used in the name (Sumitomo 3M) can be used.
When using a hook-and-loop fastener as the retaining means, one of the male member and the female member of the hook-and-loop fastener is fixed on the upper surface of the support plate such that the element is on the upper surface, and the other member is as described above. Similarly, it is fixed to a predetermined portion of the lower surface edge of the floor panel in contact with the surface fastener member on the support plate.
When a magnetic sheet such as a bonded magnet is used as the holding means, two magnetic sheets having different magnetic poles may be fixed to predetermined positions on the upper surface of the support plate and the lower surface edge of the floor panel, as in the case of the surface fastener. it can.
[0031]
【The invention's effect】
As described above, the unit support leg according to the present invention uses a hollow pipe as a material, forms a buckle at the lower or lower end portion, and gently forms a gap between the lower large-diameter portion and the upper small-diameter portion. Since the support bolt is formed by drawing to form an inclined portion and has a threaded portion on at least the upper outer peripheral surface of the small diameter portion, it is easy to manufacture, and a long-length support bolt is also manufactured at low cost. It can be suitably used especially for construction of a double floor having a high floor height. Further, since the support bolt of the present invention is manufactured as an integral body using a hollow pipe as a material, and is drawn and formed so as to have a gentle slope between the large diameter portion and the small diameter portion, the length of the support bolt is reduced. Even if it is long, it can maintain a sufficiently high strength, and the cost of maintaining a predetermined strength that can withstand the floor load of the double floor is lower than that of a conventional solid support bolt. In addition, even if the female thread of the level adjustment nut has a standard thread diameter, the diameter of the small diameter part of the support bolt can be drawn and formed to a corresponding diameter, and the strength of the support bolt is increased by increasing the length of the support bolt Even if a large diameter portion having a large upper diameter is required, it is possible to easily cope with various lengths and diameters required for the support bolt.
[0032]
Further, in the case of a unit supporting leg having a vertical through hole and a floor contact base having a groove formed on the lower surface thereof extending from the through hole to the side surface, the unit supporting leg is formed above the level adjusting nut. Adhesion and fixation between the level adjusting nut and the support bolt, and between the floor mating base, the foundation floor and the support bolt Adhesion and fixation can be performed at the same time, and the workability of the adhesive injection is significantly improved. In addition, by increasing the size of the base of the floor contact base, the adhesive strength with the base floor can be increased, and the support bolt can be stably erected.
Further, since the through hole of the floor base and the groove formed on the lower surface thereof serve as an air cushion, the impact applied to the floor is reduced, and the sound insulation and vibration damping effects are excellent. Still further, the unit supporting leg using the hollow supporting bolt as in the present invention is superior in the effect of preventing the propagation of floor impact sound as compared with the unit supporting leg using the conventional solid supporting bolt. .
Furthermore, by providing engaging means for retaining at the lower end of the support bolt and / or the floor contact base, a double floor structure excellent in earthquake resistance can be constructed.
[Brief description of the drawings]
FIG. 1 is a partially broken side view showing an assembled state of an embodiment of a unit support leg according to the present invention.
FIG. 2 is a plan view of the support bolt shown in FIG.
FIG. 3 is a plan view showing another embodiment of the rotary tool engaging portion of the support bolt.
FIG. 4 is a plan view showing still another embodiment of a rotary tool engaging portion of a support bolt.
FIG. 5 is a partially broken side view showing the level adjusting nut shown in FIG. 1;
FIG. 6 is a sectional view taken along line AA of FIG. 5;
FIG. 7 is a partially broken side view showing another embodiment of the level adjusting nut.
FIG. 8 is a sectional view taken along line BB of FIG. 7;
FIG. 9 is a partially broken side view showing a state of a mounting portion of a floor support base and a support bolt in another embodiment of the unit support leg according to the present invention.
10 is a perspective view of the floor support base shown in FIG. 9;
FIG. 11 is a partially broken side view showing a state of a mounting portion of a floor support base and a support bolt in another embodiment of the unit support leg according to the present invention.
FIG. 12 is a partially broken side view showing a state of a mounting portion of a floor support base and a support bolt in still another embodiment of the unit support leg according to the present invention.
FIG. 13 is a sectional view of an example of a conventional unit supporting leg.
FIG. 14 is a cutaway perspective view showing a state where a double-floor floor panel is constructed using a conventional unit supporting leg.
[Explanation of symbols]
1,1a, 1b, 1c Floor base
4,4a, 4b, 4c Through hole
5,5a, 5b, 5c recess
8,8a engaging part
9, 9a, 9b, 9c groove
10, 10a, 10b, 10c Support bolt
11, 11a, 11b, 11c Flange
12,12a, 12b, 12c Large diameter part
13 Inclined part
14 Small diameter part
15 Screw part
16, 16a, 16b Engaging part for rotary tool
17 Groove
18, 18a, 18b, 18c Central through hole
20, 20a Nut for level adjustment
21, 21a Female thread
24, 24a cylindrical part
25, 25a support
30 Support plate
33 Adhesive layer
34 Adhesive pool
101 Unit support leg
102 floor base
108 Level adjustment nut
110 support plate
120 Foundation floor (concrete slab)
123 floor panel

Claims

A floor support, a support bolt rotatably erected on the base, and a support plate mounted height-adjustably via a level adjustment nut screwed onto the support bolt. In the unit support leg, the support bolt has a flange portion formed at a lower end or a lower portion thereof and expanded laterally, and the cylindrical body has a large-diameter portion lower than a predetermined position and a large-diameter portion above the predetermined position. It is formed so as to transition to a small diameter portion having a smaller diameter through a gentle inclined portion, a screw portion is formed on at least an outer peripheral surface of an upper portion of the small diameter portion, and a rotating tool engagement portion is provided at a top end portion. Ri consists hollow cylinder that penetrates the formed vertically, the contact bed base has a vertical through-hole, extending toward the side from the through hole to the lower surface of該接floor base groove unit supporting legs characterized that you have but formed.

The unit supporting leg according to claim 1 , wherein a recess for accommodating a lower end portion of the support bolt is formed in the floor support base.

A flange portion is formed at a lower end portion of the support bolt, a concave portion for receiving the flange portion is formed in the floor mat base so as to open upward, and an inner wall portion of the concave portion surrounds the through hole. 2. The unit support leg according to claim 1 , wherein the unit support leg is formed at a position where the unit support leg is formed.

It said support bolt the lower end and / or the unit supporting leg according to claim 1 or 2 engaging means is provided for retaining the Seyyuka base of.

The nut for level adjustment is composed of a female screw part having an inner peripheral screw part having an inner diameter corresponding to the screw part diameter of the support bolt, and a cylindrical part having an inner diameter larger than the inner diameter of the female screw part, and the cylindrical part or The unit support leg according to any one of claims 1 to 4 , wherein a support portion protruding laterally is formed on an outer peripheral surface of the female screw portion at a predetermined position.

It said engaging portion rotary tool, than the diameter of the small diameter portion comprises a cylindrical portion of smaller diameter, cylindrical portion at least a pair of opposing grooves unit according to claims 1 to 5 is formed on the apical surface of the Support legs .

The rotating tool engaging portion has an outer peripheral portion and / or an inner peripheral portion having an outer diameter smaller than the diameter of the small diameter portion, and is formed of a polygonal cylindrical portion, and at least a pair of opposed groove portions is formed on a top end surface of the cylindrical portion. The unit support leg according to claim 1 , wherein the unit support leg has or does not have a.