JP4510215B2

JP4510215B2 - Steel pulling connection structure

Info

Publication number: JP4510215B2
Application number: JP2000077515A
Authority: JP
Inventors: 敬司山本; 薫上新
Original assignee: Nippon Steel Nisshin Co Ltd
Current assignee: Nippon Steel Nisshin Co Ltd
Priority date: 1999-03-23
Filing date: 2000-03-21
Publication date: 2010-07-21
Anticipated expiration: 2020-03-21
Also published as: JP2000336899A

Description

【０００１】
【産業上の利用分野】
本発明は、住宅等の建物下部の構築に使用される鋼製大引きの連結構造に関する。
【０００２】
【従来の技術】
住宅を始めとする建物では、コンクリート基礎に床パネルを差し渡した床構造が採用されている。たとえば、図１に示すようにコンクリート等が打設された地盤ＧＬからコンクリート製基礎１を立設し、隣接するコンクリート製基礎１，１の間に床パネル２を差し渡す。床パネル２は、束金物３で支持された大引き４に釘，ビス等の固定金具で固定される。
大引き４としては、従来から使用されてきた木材に替えて鋼製大引きが使用され始めている。鋼製大引きは、乾燥収縮による反り，捻り等の変形が生じ易い木製大引きの欠点を解消し、寸法安定性に優れている。
【０００３】
束金物に対する鋼製大引きの取付けを容易にするため、特開平９−２１７４５２号公報では、鋼製大引きの側面に係合凹部を設け、該係合凹部に引っ掛る係合片を備えた束金物が紹介されている。
この束金物は、設置板３ａから起立した支持ボルト３ｂにターンバックル３ｃを介して受け金具３ｄが固着されている（図２ａ）。受け金具３ｄには、鋼製大引き６が入る収容空間３ｅをあけて両側に起立片３ｆが設けられ、起立片３ｆの一部に切込みを入れて収容空間３ｅ側に突出する係止片３ｇとしている。束金物３に連結される鋼製大引き６には、係止片３ｇに噛み合う係合突起６ａが下部両側から突出している。
束金物３に鋼製大引き６を連結するとき、鋼製大引き６を上方から束金物３の収容空間３ｅに押し込むと（図２ｂ）、起立片３ｆが弾性変形して両側に開き、係合突起６ａが係止片３ｇを乗り越えた時点で起立片３ｆが弾性復元する。その結果、係止片３ｇと係合突起６ａとが噛み合い、鋼製大引き６が束金物３に連結される。
【０００４】
【発明が解決しようとする課題】
しかし、図２の方式による噛合いでは、起立片３ｆから収容空間３ｅ側に突出する係止片３ｇの弾性変形が係合力に使用されるだけであるため、連結強度の弱い継手構造になる。また、起立片３ｆが外側に開くとき収容空間３ｅの底部３ｈが上反りに変形するため、連結強度に有効な弾性復元力が一層弱くなる。更には、収容空間３ｅ内を鋼製大引き６が長手方向にずれることに対する拘束力もあまり期待できない。
【０００５】
【課題を解決するための手段】
本発明は、このような問題を解消すべく案出されたものであり、鋼製大引きと束金物とを強固に、しかもワンタッチ方式で連結する構造を採用することにより、堅固な床構造を作業性良く構築することを目的とする。本発明は、その目的を達成するため、根太が載置される鋼製大引きを連結する構造であり、地盤から起立する支持ボルトの上端に固着された板状基部を含む大引き受け板と、大引き受け板に固着され又は大引き受け板の両側を折り曲げて形成したバネ部とを有し、バネ部は板状基部に固着される取付け部よりも実効幅の狭い弾性変形部を介して鋭角的に折れ曲がった係止辺及び案内辺が上部に形成された束金物と、下辺と、バネ部の案内辺と同じ傾斜角度で下辺の一側から立ち上がった被案内辺と、被案内辺から屈曲し、バネ部の係止辺に面接触する係合辺と、下辺の他側又は係合辺から上方に延びる側壁辺とを有し、ほぼ矩形状の中空断面をもつ鋼製大引きとを備え、鋼製大引きが大引き受け板の上方から押し下げられることにより、バネ部の係止辺と鋼製大引きの係合辺が面接触状態で噛み合うことを特徴とする。
【０００６】
底部に長手方向に延びる開口部を設けた形状の鋼製大引きも使用できる。開口部のある鋼製大引きに対しては、開口部に嵌まり込む拘束突起を大引き受け板に設けた束金物を使用することが好ましいが、拘束突起のない束金物も使用可能である。拘束突起の両側立上り部には、開口部に両側から臨む鋼製大引きのリブが嵌まり込む切欠きを形成することができる。上からの荷重に対して鋼製大引きの被案内辺がへたるような大きな弾性変形は、鋼製大引きとの接触によりバネ部が広がった後で鋼製大引きの被案内辺に面接触する支持辺を板状基部の両側から被案内辺と同じ傾斜角度で立ち上げることにより防止できる。また、板状基部の両側中央部から垂直上方に伸びた板状支持アームを備え、板状支持アームの上部が折り曲げられて、鋼製大引きの上面及び側壁辺にそれぞれ内側から接触する支持辺及び当接面が形成されている束金物を使用するとき、鋼製大引きコーナー部の変形が防止される。
【０００７】
【実施の形態】
本発明で使用する束金物１０は、たとえば図３（ａ）に示すように支持ボルト１１の上端に大引き受け板１２を溶接等で固着し、大引き受け板１２で鋼製大引き２０を支持する。支持ボルト１１としては、従来と同様にターンバックル等の高さ調節機構を備えたものが使用される。大引き受け板１２の両側は、下方に折れ曲った屈曲部１２ａ，１２ｂになっている。屈曲部１２ａ，１２ｂよりも内側は、鋼製大引き２０の着座部１２ｃ（板状基部）となる。着座部１２ｃに、一方の屈曲部１２ａから他方の屈曲部１２ｂに延びる複数の補強ビード１２ｄを形成しても良い。屈曲部１２ａ，１２ｂと着座部１２ｃとの間の角度α（図３ｂ）は、鈍角に設定されている。屈曲部１２ａ，１２ｂの側面には、板バネ１３がリベット１４等で固着される。屈曲部１２ａ，１２ｂと着座部１２ｃとの間の角度αが鈍角になっているので、板バネ１３は、図３（ｂ）に示すように上しぼまりの状態で屈曲部１２ａ，１２ｂに固着される。なお、板バネ１３に替え、大引き受け板１２の両端部に曲げ加工で成形したバネ部を使用することもできる。
【０００８】
板バネ１３は、屈曲部１２ａ，１２ｂに固着される取付け部１３ａから弾性変形部１３ｂが上方に延び、弾性変形部１３ｂの上部に係止部１３ｃが形成されている。取付け部１３ａ及び係止部１３ｃは屈曲部１２ａ，１２ｂとほぼ同じ幅をもち、弾性変形部１３ｂは幅狭になっている。これにより、板バネ１３を拡げる力が加わったとき、板バネ１３は、専ら弾性変形部１３ｂが取付け部１３ａを起点として側方に弾性変形する。
係止部１３ｃは、弾性変形部１３ｂから折れ曲った係止辺１３ｄをもち、係止辺１３ｄの上部が逆方向に折れ曲った案内辺１３ｅになっている。弾性変形部１３ｂと係止辺１３ｄとの間の角度βは、着座部１２ｃの中央部に向けて係止辺１３ｄを下向きに傾斜させるためα未満に設定されている。係止辺１３ｄと案内辺１３ｅとの間の角度γは、案内辺１３ｅが上広りになるように鋭角に設定されている。
【０００９】
鋼製大引き２０は、鋼板を所定形状に成形して溶接又はカシメ接合することにより作製されたほぼ矩形状の中空筒体である。鋼製大引き２０の底面は、大引き受け板１２の着座部１２ｃ上に載置される着座辺２１（下辺）になる。着座辺２１の両側、すなわち中空筒体の角部は、斜めに成形された被案内辺２２になっている。被案内辺２２の高さは、着座部１２ｃから係止辺１３ｄまでの高さにほぼ等しく設定されている。着座辺２１と被案内辺２２との間の角度は、着座部１２ｃと案内辺１３ｅとの間の角度（α−β＋γ）よりも小さくすることが好ましい。これにより、鋼製大引き２０を一対の板バネ１３，１３の間に押し込んだとき、被案内辺２２は、板バネ１３，１３を押し広げながら案内辺１３ｅに案内されて下方に移動する。
【００１０】
被案内辺２２の上部は、中空筒体の中心側に折れ曲った係合辺２３になっている。係合辺２３は、係止状態にある係止辺１３ｄを面接触させるため、着座部１２ｃと係止辺１３ｄとの間の角度（α−β）に等しい角度で傾斜させている。
係合辺２３の内側端部から側壁辺２４が上方に延びている。側壁辺２４と着座辺２１との間の角度は直角に設定される。側壁辺２４の上部には必要に応じて張出し部２５が設けられ、中空筒体の上面が根太（図示せず）配置用の上辺２６になっている。
鋼製大引き２０を図３（ａ）に矢印で示すように板バネ１３，１３の間に上方から押し込むと、被案内辺２２，２２で案内辺１３ｅ，１３ｅを押し広げながら着座辺２１が下降する。着座部１２ｃに着座辺２１が達したとき、係止部１３ｃ，１３ｃの先端部が被案内辺２２，２２を乗り越える。その結果、板バネ１３，１３が互いに狭まる方向に弾性復元し、図３（ｃ）に示すように係合辺２３に面接触状態で係止辺１３ｄが噛み合う。これにより、束金物１０に鋼製大引き２０が強固に連結される。連結手順としては、地盤ＧＬに立設した束金物１０に鋼製大引き２０を嵌め込むことも可能であるが、ターンバックル等の高さ調整機能を備えた束金物１０を予め鋼製大引き２０に嵌め込み、地盤ＧＬに立設する方式が作業性に優れている。
束金物１０と鋼製大引き２０との接触状態は、両者の接触面の何れか一方又は双方、すなわち着座部１２ｃ，係止辺１３ｄ，着座辺２１，係合片２３等に緩衝材１２ｋ（図７）を貼り付け、又は予め樹脂塗装した鋼板で束金物１０及び／又は鋼製大引き２０を造ることにより一層向上する。緩衝材の貼付けは、金属的な接触音を防止する上でも有効である。
【００１１】
鋼製大引き２０を係止する力は、板バネ１３の弾撥力による。板バネ１３の弾撥力は、取付け部１３ａ側から弾性変形部１３ｂが弾性変形する力によって生じるものであり、図２で説明した係止片３ｇの弾性変形による場合に比較して格段に大きい。しかも、弾性変形部１３ｂに比較して係止部１３ｃが長くなっているため、弾性変形は弾性変形部１３ｂに集中し、係止部１３ｃの弾性変形が抑えられる。これによっても、係止辺１３ｄ，１３ｄと係合辺２３，２３とが着座部１２ｃの中央側に向けて下向きに傾斜して強固に噛み合い、束金物１０に連結された鋼製大引き２０が上方向に引き抜かれることなく、長手方向のズレも防止される。なお、束金物１０から鋼製大引き２０を取り外すときは、鋼製大引き２０から側方に突出している案内辺１３ｅを側方に押し広げて係止辺１３ｄと係合辺２３との噛合いを解除することにより、束金物１０から鋼製大引き２０が分離される。
【００１２】
鋼製大引き２０としては、中空筒体に替えて、下方の一部が開いた形状の大引きも使用可能である。たとえば、図４（ａ）に示すように底辺に長手方向に延びた開口部２７をもつ鋼製大引き２０を使用することもできる。開口部２７のある鋼製大引き２０は、鋼板を所定断面形状に成形加工することにより製造できるため、溶接が必要な中空筒体に比較して製造上有利である。また、開口部２７の縁に補強用リブ２８，２８を形成することにより、開口部２７周辺の強度も確保される。
開口部２７を設けた鋼製大引き２０も、図３に示した束金物１０に同様な操作で連結される。しかし、鋼製大引き２０の着座辺２１を板バネ１３，１３の間に嵌め込むとき、開口部２７で左右に分断された着座辺２１Ｒ，２１Ｌが板バネ１３，１３の係止部１３ｃ，１３ｃで押されて内側に変位し、係止辺１３ｄと係合辺２３との噛合いが弱くなる虞がある。
【００１３】
着座辺２１Ｒ，２１Ｌの内側変位は、束金物１０の大引き受け板１２に拘束突起１２ｅ，１２ｅを設けることにより抑制できる。拘束突起１２ｅは、大引き受け板１２の辺部から切り起こされ、開口部２７に嵌まり込む幅をもっている。拘束突起１２ｅは、図４（ｂ）に示すように屈曲部１２ａ，１２ｂに固着した板バネ１３の係止部１３ｃよりも高く設定されている。拘束突起１２ｅは，開口部２７に対する差込みを容易にするため、上端を幅狭にすることが好ましい。拘束突起１２ｅのある束金物１０に鋼製大引き２０を連結する場合、鋼製大引き２０を図４（ａ）に矢印で示すように下降させると、開口部２７に拘束突起１２ｅの上端が進入した後で被案内辺２２が板バネ１３の案内辺１３ｅに接触する。そのため、左右の着座辺２１Ｒ，２１Ｌ（下辺）が拘束突起１２ｅで内側から支持され、係止部１３ｃの押圧による着座辺２１Ｒ，２１Ｌの内側変位が抑制される。その結果、図４（ｃ）に示すように拘束突起１２ｅが鋼製大引き２０の内部に嵌まり込んだ状態で係止辺１３ｄと係合辺２３が噛み合い、束金物１０に鋼製大引き２０が強固に連結される。
【００１４】
リブ２８を拘束突起１２ｅで係止する機構を組み込むことも可能である。この場合、たとえば図５（ａ）に示すように、リブ２８の高さにほぼ等しい切欠き１２ｆを拘束突起１２ｅの立上げ部両側に形成する。鋼製大引き２０を矢印方向に押し下げると、拘束突起１２ｅの傾斜面に沿って開口部２７が広がりながら着座辺２１Ｒ，２１Ｌが拘束突起１２ｅの両側と板バネ１３との間を下降する。リブ２８が切欠き１２ｆに達した時点で、鋼製大引き２０の弾性復元力によって開口部２７が狭まり、図５（ｂ）に示すように切欠き１２ｆにリブ２８が噛み合う。この噛合いにより、鋼製大引き２０の外れ防止と共に、補強リブ２８，着座辺２１，被案内辺２２の変形も防止される。図５（ｃ）は、このようにして束金物１０に取り付けられた鋼製大引き２０を側方から見た図である。
【００１５】
支持辺１２ｇを付けた束金物１０に向けて鋼製大引き２０を押し下げると、被案内辺２２に板バネ１３の案内辺１３ｅが接触して板バネ１３が開く方向に弾性変形する。更に鋼製大引き２０を押し下げると、被案内辺２２が支持辺１２ｇに接触する。この時点からは、剛性の高い支持辺１２ｇ，１２ｇによって開口部２７が狭まる方向の力が着座辺２１Ｒ，２１Ｌに加えられる。しかも、支持辺１２ｇ，１２ｇにより着座辺２１Ｒ，２１Ｌが拘束突起１２ｅに押し付けられ、切欠き１２ｆとリブ２８との噛合いも強固になると共に、連結された鋼製大引き２０の変形も防止される。
【００１６】
束金物１０に鋼製大引き２０を連結した後、下向きの大きな力が鋼製大引き２０に加わると鋼製大引き２０の開口部２７が広がる虞がある。開口部２７の広がりを防止するためには、着座部１２ｃの両側中央部から支持辺１２ｇ，１２ｇを斜め上方に立ち上げる。支持辺１２ｇは、鋼製大引き２０の被案内辺２２とほぼ同じ傾斜角度で着座部１２ｃから立ち上がり，板バネ１３に形成した開口部１３ｆに臨んでいる。開口部１３ｆは、板バネ１３の実効幅を狭くし、板バネ１３の弾性変形を弾性変形部１３ｂに集中させる作用もある。
【００１７】
束金物１０に、鋼製大引き２０の上辺２６を下方から支える機能をもたせることもできる。この場合、たとえば図６に示すように、着座部１２ｃを細長形状とし、着座部１２ｃの両側中央部から板状支持アーム１２ｈ，１２ｈを垂直上方に延ばし、板状支持アーム１２ｈの上部を水平方向に折り曲げて支持面１２ｉ，１２ｉとしている。ただし、図６の着座部１２ｃは図３の着座部１２ｃのように鋼製大引き２０に直接接触することはなく、支持面１２ｉで鋼製大引き２０を内側から支持する。支持面１２ｉの先端を更に下方に折り曲げ、鋼製大引き２０の側壁辺２４に内側から接触する当接部１２ｊ，１２ｊを形成している。当接面１２ｊは、板状支持アーム１２ｈの補強リブとしても働く。支持面１２ｉには、鋼製大引き２０に対する接触状態を向上させ、また振動吸収及び金属音防止のため、適宜の緩衝材１２ｋを貼り付けてもよい。束金物１０には、支持辺１２ｇの両側位置で板バネ１３，１３が固着されている。それぞれの板バネ１３は、一枚の板バネを着座部１２ｃを取り囲む形状に成形することにより作られる。着座部１２ｃの縁部から起立する垂直部１２ｇの上端が鋭角的に折り曲げられた係止部１３ｃとなり、係止部１３ｃが更に鋭角的に折り曲げられて案内辺１３ｅになっている。
【００１８】
束金物１０に接続される鋼製大引き２０は、鋼板の両側を内側に順次折り曲げることにより、着座辺２１Ｒ，２１Ｌ，被案内辺２２，２２及び係合辺２３，２３を形成している。着座辺２１Ｒ，２１Ｌの間は、板状支持アーム１２ｈが差し込まれる開口部２７となる。このように両側を内側に折り曲げて作製した鋼製大引き２０は、側方に張出し部や突起部がないため、運搬や施工現場での取扱いが容易になる。
図６の例では、束金物１０の板状支持アーム１２ｈ及び支持面１２ｉを鋼製大引き２０の端部開口から鋼製大引き２０の内部に嵌めこみ、束金物１０を鋼製大引き２０の長手方向にスライドさせて、鋼製大引き２０の所定位置に移動する。この段階では、側壁辺２４の内面に当接面１２ｊが当接する（図６ｂ）。
【００１９】
鋼製大引き２０の所定位置に束金物１０を位置決めした後、鋼製大引き２０を押し下げると、被案内辺２２が案内辺１３ｅに接触しながら、着座辺２１Ｒ，２１Ｌが押し広げられる。被案内辺２２が案内辺１３ｅを乗り越えると、弾性復元力で開口部２７が狭まり、係止部１３ｃに係合辺２３が噛み合わされる（図６ｃ）。このとき、鋼製大引き２０の上辺２６に支持辺１２ｉが内側から接触する。すなわち、異物等との接触によって変形しやすい鋼製大引き２０のコーナー部が支持辺１２ｉ及び当接面１２ｊで内側から支持されているため、鋼製大引き２０の変形が防止される。また、支持辺１２ｉと上辺２６との間に緩衝材１２ｋを介在させるとき、上方から鋼製大引き２０に加えられる力や振動が緩衝材１２ｋで吸収されるため、鋼製大引き２０の変形防止が更に効果的になる。
【００２０】
このように束金物１０に強固に連結された鋼製大引き２０に床パネルが配置されるため、堅固な床構造が構築される。しかも、鋼製大引き２０に装着した束金物１０を地盤ＧＬに立設することにより鋼製大引き２０を差し渡すことができるため、作業性も大幅に改善される。
【００２１】
【発明の効果】
以上に説明したように、本発明の連結構造では、束金物のバネ部に形成した係止辺と鋼製大引きの係合辺とを面接触状態で噛み合わせる方式を採用しているので、束金物に鋼製大引きが強固に連結され、上下方向に対する引抜き力や長手方向に沿ったズレに対して抵抗力のある連結構造が得られる。しかも、鋼製大引きを上方から一対の板バネの間に差し込むだけの作業で鋼製大引きが連結されるため、作業性も格段に改善される。このようにして取り付けられた鋼製大引きの上に根太を配置して床パネルを敷くとき、堅固な床構造が容易に構築される。
【図面の簡単な説明】
【図１】床構造の概略図
【図２】束金物に鋼製大引きを連結する従来の構造
【図３】本発明に従って鋼製大引きを束金物に連結する一例を説明する図
【図４】本発明に従って鋼製大引きを束金物に連結する他例を説明する図
【図５】束金物と鋼製大引きとの連結を示す他の例
【図６】束金物と鋼製大引きとの連結を示す他の例
【符号の説明】
１０：束金物１１：支持ボルト１２：大引き受け板１２ａ，ｂ：屈曲部１２ｃ：着座部（板状基部）１２ｄ：補強ビード１２ｅ：拘束突起１２ｆ：切欠き１２ｈ：板状支持アーム１２ｉ：支持面１２ｊ：当接面１３：板バネ１３ａ：取付け部１３ｂ：弾性変形部１３ｃ：係止部１３ｄ：係止辺１３ｅ：案内辺１３ｆ：開口部２０：鋼製大引き２１，２１Ｒ，２１Ｌ：着座辺（下辺）２２：被案内辺２３：係合辺２４：側壁辺２５：張出し部２６：支持辺２７：開口部２８：補強用リブ α：大引き受け板の着座部と屈曲部との間の角度 β：板バネの弾性変形部と係止辺との間の角度 γ：板バネの係止辺と案内辺との間の角度[0001]
[Industrial application fields]
The present invention relates to a steel pulling connecting structure used for construction of a lower part of a building such as a house.
[0002]
[Prior art]
In buildings such as houses, floor structures are adopted in which floor panels are placed on concrete foundations. For example, as shown in FIG. 1, a concrete foundation 1 is erected from a ground GL on which concrete or the like is placed, and a floor panel 2 is passed between adjacent concrete foundations 1 and 1. The floor panel 2 is fixed to a pulling 4 supported by a bundle 3 with a fixing bracket such as a nail or a screw.
As the large pull 4, a steel large pull has begun to be used in place of the conventionally used wood. Steel pulling eliminates the disadvantages of wooden pulling that tend to cause deformation such as warping and twisting due to drying shrinkage, and has excellent dimensional stability.
[0003]
In order to facilitate the attachment of the steel pull to the bundle, JP-A-9-217452 has an engagement recess on the side surface of the steel pull and includes an engagement piece that is caught by the engagement recess. Bundles are introduced.
In this bundle, a receiving metal fitting 3d is fixed to a support bolt 3b erected from an installation plate 3a via a turnbuckle 3c (FIG. 2a). The receiving metal 3d is provided with standing pieces 3f on both sides with an accommodation space 3e into which the steel puller 6 is inserted, and a locking piece 3g protruding into the accommodation space 3e side by cutting a part of the standing piece 3f. It is said. An engagement protrusion 6a that engages with the locking piece 3g protrudes from both sides of the lower portion of the steel puller 6 connected to the bundle 3.
When the steel drawer 6 is connected to the bundle 3, when the steel drawer 6 is pushed into the accommodation space 3 e of the bundle 3 from above (FIG. 2 b), the standing piece 3 f is elastically deformed and opens on both sides. When the mating protrusion 6a gets over the locking piece 3g, the standing piece 3f is elastically restored. As a result, the locking piece 3g and the engaging protrusion 6a are engaged with each other, and the steel pulling 6 is connected to the bundle 3.
[0004]
[Problems to be solved by the invention]
However, in the engagement according to the method of FIG. 2, since the elastic deformation of the locking piece 3g protruding from the upright piece 3f to the accommodation space 3e side is only used for the engagement force, the joint structure has a weak connection strength. Moreover, since the bottom 3h of the accommodation space 3e is deformed upward when the upright piece 3f is opened outward, the elastic restoring force effective for the connection strength is further weakened. Furthermore, the restraining force with respect to the steel large pull 6 being displaced in the longitudinal direction in the accommodation space 3e cannot be expected so much.
[0005]
[Means for Solving the Problems]
The present invention has been devised to solve such a problem, and by adopting a structure in which a steel pulling and a bundle are firmly connected by a one-touch method, a solid floor structure is obtained. The purpose is to build workability. In order to achieve the object, the present invention is a structure for connecting steel pulls on which joists are placed, and a large receiving plate including a plate-like base fixed to the upper end of a support bolt that stands up from the ground, A spring part fixed to the large receiving plate or bent on both sides of the large receiving plate, and the spring part has an acute angle through an elastic deformation part having a narrower effective width than the mounting part fixed to the plate-like base part a bundle hardware locking edges and guide edges are formed on the upper which is bent to a lower side, and the guided side rising from one side of the lower side at the same inclination angle as the guide edge of the spring portion, bent from the guide edge And an engagement side that comes into surface contact with the locking side of the spring part, and a side wall extending upward from the other side of the lower side or the engagement side, and a steel pulling having a substantially rectangular hollow cross section. by steel large pull is depressed from above the large underwriting plate, spring Engagement sides and engagement edges of the steel large pull, characterized in that the meshes in surface contact of the.
[0006]
It is also possible to use a steel pulling with a shape having an opening extending in the longitudinal direction at the bottom. For steel pulling with an opening, it is preferable to use a bundle with a restraining projection fitted into the opening on the large pulling plate, but a bundle with no restraining projection can also be used. At both side rising portions of the restraining projection, a notch can be formed in which the steel pulling ribs facing the opening from both sides are fitted. A large elastic deformation such that the guided side of the steel puller sag with respect to the load from above is caused by the surface of the guided side of the steel puller after the spring has spread by contact with the steel puller. This can be prevented by raising the contacting support side from both sides of the plate-like base at the same inclination angle as the guided side. In addition, a plate-like support arm that extends vertically upward from the center on both sides of the plate-like base, and the upper portion of the plate-like support arm is bent to contact the upper surface and the side wall of the steel puller from the inside respectively. And when using the bundled object in which the contact surface is formed, a deformation | transformation of steel large drawing corner parts is prevented.
[0007]
Embodiment
In the bundle 10 used in the present invention, for example, as shown in FIG. 3A, a large receiving plate 12 is fixed to the upper end of a support bolt 11 by welding or the like, and the steel large drawing 20 is supported by the large receiving plate 12. . As the support bolt 11, one having a height adjusting mechanism such as a turnbuckle is used as in the conventional case. Both sides of the large receiving plate 12 are bent portions 12a and 12b bent downward. The inside of the bent portions 12a and 12b is a seating portion 12c (plate-like base portion ) of the steel large pull 20. A plurality of reinforcing beads 12d extending from one bent portion 12a to the other bent portion 12b may be formed on the seating portion 12c. An angle α (FIG. 3b) between the bent portions 12a and 12b and the seating portion 12c is set to an obtuse angle. A leaf spring 13 is fixed to the side surfaces of the bent portions 12a and 12b with rivets 14 or the like. Since the angle α between the bent portions 12a and 12b and the seating portion 12c is an obtuse angle, the leaf spring 13 is fixed to the bent portions 12a and 12b in an upwardly narrowed state as shown in FIG. Is done. In addition, it replaces with the leaf | plate spring 13, and the spring part shape | molded by the bending process can also be used for the both ends of the large drawing receiving plate 12. FIG.
[0008]
The leaf spring 13 has an elastic deformation portion 13b extending upward from an attachment portion 13a fixed to the bent portions 12a and 12b, and a locking portion 13c is formed above the elastic deformation portion 13b. The attachment portion 13a and the locking portion 13c have substantially the same width as the bent portions 12a and 12b, and the elastic deformation portion 13b is narrow. Thereby, when the force which expands the leaf | plate spring 13 is added, as for the leaf | plate spring 13, only the elastic deformation part 13b elastically deforms to the side starting from the attachment part 13a.
The locking portion 13c has a locking side 13d that is bent from the elastic deformation portion 13b, and an upper portion of the locking side 13d is a guide side 13e that is bent in the opposite direction. The angle β between the elastic deformation portion 13b and the locking side 13d is set to be less than α in order to incline the locking side 13d downward toward the central portion of the seating portion 12c. The angle γ between the locking side 13d and the guide side 13e is set to an acute angle so that the guide side 13e becomes wider.
[0009]
The steel pulling 20 is a substantially rectangular hollow cylinder produced by forming a steel plate into a predetermined shape and welding or crimping. The bottom surface of the steel large pull 20 is a seating side 21 (lower side) placed on the seating portion 12c of the large pull receiving plate 12. Both sides of the seating side 21, that is, the corners of the hollow cylindrical body are guided sides 22 formed obliquely. The height of the guided side 22 is set substantially equal to the height from the seating portion 12c to the locking side 13d. The angle between the seating side 21 and the guided side 22 is preferably smaller than the angle (α−β + γ) between the seating portion 12c and the guide side 13e. Thereby, when the steel pulling 20 is pushed between the pair of leaf springs 13 and 13, the guided side 22 is guided by the guide side 13e while moving the leaf springs 13 and 13 and moves downward.
[0010]
The upper part of the guided side 22 is an engagement side 23 that is bent toward the center of the hollow cylinder. The engaging side 23 is inclined at an angle equal to the angle (α−β) between the seating portion 12c and the locking side 13d in order to bring the locking side 13d in the locked state into surface contact.
A side wall side 24 extends upward from the inner end of the engagement side 23. The angle between the side wall side 24 and the seating side 21 is set to a right angle. An overhang 25 is provided on the upper side of the side wall 24 as necessary, and the upper surface of the hollow cylinder is an upper side 26 for placing joists (not shown).
When the steel pulling 20 is pushed from above between the leaf springs 13 and 13 as indicated by the arrows in FIG. 3A, the seating side 21 is expanded while the guide sides 13e and 13e are expanded by the guided sides 22 and 22. Descend. When the seating side 21 reaches the seating part 12c, the front ends of the locking parts 13c, 13c get over the guided sides 22,22. As a result, the leaf springs 13 and 13 are elastically restored in a narrowing direction, and the engaging side 13d is engaged with the engaging side 23 in a surface contact state as shown in FIG. Thereby, the steel pulling 20 is firmly connected to the bundle 10. As a connecting procedure, it is possible to fit the steel pulling 20 into the bundle 10 standing on the ground GL. However, the bundle 10 having a height adjusting function such as a turnbuckle is previously drawn into the steel pulling. The method of being fitted to 20 and standing on the ground GL is excellent in workability.
The contact state between the bundle 10 and the steel pulling 20 is such that one or both of the contact surfaces, that is, the seating portion 12c, the locking side 13d, the seating side 21, the engagement piece 23, etc. It is further improved by making the bundle 10 and / or the steel pulling 20 with a steel plate to which FIG. Affixing the cushioning material is also effective in preventing metallic contact noise.
[0011]
The force for locking the steel pull 20 is due to the elastic force of the leaf spring 13. The elastic force of the leaf spring 13 is generated by the force of elastic deformation of the elastic deformation portion 13b from the mounting portion 13a side, and is much larger than that due to elastic deformation of the locking piece 3g described in FIG. . Moreover, since the locking portion 13c is longer than the elastic deformation portion 13b, the elastic deformation is concentrated on the elastic deformation portion 13b, and the elastic deformation of the locking portion 13c is suppressed. Also by this, the locking sides 13d and 13d and the engaging sides 23 and 23 are inclined downwardly toward the center side of the seating portion 12c and are firmly meshed with each other, and the steel pulling 20 connected to the bundle 10 is provided. A longitudinal shift is also prevented without being pulled upward. When the steel puller 20 is removed from the bundle 10, the guide side 13 e protruding laterally from the steel puller 20 is pushed sideways to engage the locking side 13 d and the engaging side 23. The steel pulling 20 is separated from the bundled article 10 by releasing the hook.
[0012]
As the steel pulling 20, a pulling with a shape in which a part of the lower part is opened can be used instead of the hollow cylinder. For example, as shown in FIG. 4 (a), it is possible to use a steel pulling 20 having an opening 27 extending in the longitudinal direction on the bottom side. Since the steel pulling 20 with the opening 27 can be manufactured by forming a steel plate into a predetermined cross-sectional shape, it is advantageous in manufacturing compared to a hollow cylinder that requires welding. Further, by forming the reinforcing ribs 28 on the edge of the opening 27, the strength around the opening 27 is also ensured.
The steel pulling 20 provided with the opening 27 is also connected to the bundle 10 shown in FIG. 3 by the same operation. However, when the seating side 21 of the steel puller 20 is fitted between the leaf springs 13 and 13, the seating sides 21R and 21L divided by the opening 27 to the left and right are the locking portions 13c and 13c of the leaf springs 13 and 13, respectively. There is a possibility that the engagement side 13d and the engagement side 23 are weakened by being pushed by 13c and displaced inward.
[0013]
The inner displacement of the seating sides 21R and 21L can be suppressed by providing the restraining projections 12e and 12e on the large receiving plate 12 of the bundle 10. The restraining protrusion 12 e is cut and raised from the side portion of the large receiving plate 12 and has a width that fits into the opening 27. As shown in FIG. 4B, the restraining protrusion 12e is set higher than the locking portion 13c of the leaf spring 13 fixed to the bent portions 12a and 12b. The restraining protrusion 12e preferably has a narrow upper end in order to facilitate insertion into the opening 27. When the steel puller 20 is connected to the bundle 10 having the restricting protrusions 12e, when the steel puller 20 is lowered as shown by an arrow in FIG. After entering, the guided side 22 contacts the guide side 13 e of the leaf spring 13. Therefore, the left and right seating sides 21R, 21L (lower side) are supported from the inside by the restraining projection 12e, and the inner displacement of the seating sides 21R, 21L due to the pressing of the locking portion 13c is suppressed. As a result, as shown in FIG. 4 (c), the locking side 13 d and the engaging side 23 are engaged with each other in a state where the restraining projection 12 e is fitted inside the steel pulling 20, and the steel pulling is performed on the bundle 10. 20 is firmly connected.
[0014]
It is also possible to incorporate a mechanism for locking the rib 28 with the restraining protrusion 12e. In this case, for example, as shown in FIG. 5A, notches 12f substantially equal to the height of the ribs 28 are formed on both sides of the rising portion of the restricting projection 12e. When the steel pulling 20 is pushed down in the direction of the arrow, the seating sides 21R and 21L descend between the plate springs 13 and both sides of the restricting protrusion 12e while the opening 27 spreads along the inclined surface of the restricting protrusion 12e. When the rib 28 reaches the notch 12f, the opening 27 is narrowed by the elastic restoring force of the steel pulling 20, and the rib 28 meshes with the notch 12f as shown in FIG. 5B. This engagement prevents the steel pulling 20 from coming off and prevents deformation of the reinforcing rib 28, the seating side 21, and the guided side 22. FIG.5 (c) is the figure which looked at the steel pulling 20 attached to the bundled article 10 from the side in this way.
[0015]
When the steel pull 20 is pushed down toward the bundle 10 with the support side 12g, the guide side 13e of the plate spring 13 contacts the guided side 22 and elastically deforms in the direction in which the plate spring 13 opens. When the steel pull 20 is further pushed down, the guided side 22 comes into contact with the support side 12g. From this point of time, a force in the direction in which the opening 27 is narrowed by the highly rigid support sides 12g, 12g is applied to the seating sides 21R, 21L. In addition, the seating sides 21R and 21L are pressed against the restraining projections 12e by the support sides 12g and 12g, the engagement between the notches 12f and the ribs 28 is strengthened, and deformation of the connected steel pulling 20 is also prevented. .
[0016]
After the steel puller 20 is connected to the bundle 10, if a large downward force is applied to the steel puller 20, the opening 27 of the steel puller 20 may spread. In order to prevent the opening 27 from spreading, the support sides 12g and 12g are raised obliquely upward from the center of both sides of the seating portion 12c. The support side 12 g rises from the seating portion 12 c at substantially the same inclination angle as the guided side 22 of the steel pulling 20 and faces the opening 13 f formed in the leaf spring 13. The opening 13f has an effect of narrowing the effective width of the leaf spring 13 and concentrating the elastic deformation of the leaf spring 13 on the elastic deformation portion 13b.
[0017]
The bundle 10 can also have a function of supporting the upper side 26 of the steel draw 20 from below. In this case, for example, as shown in FIG. 6, the seating portion 12c is elongated, the plate-like support arms 12h and 12h are extended vertically upward from the central portions on both sides of the seating portion 12c, and the upper portion of the plate-like support arm 12h is horizontally oriented. The support surfaces 12i and 12i are bent. However, the seating portion 12c in FIG. 6 does not directly contact the steel pullout 20 unlike the seating portion 12c in FIG. 3, and supports the steel pullout 20 from the inside by the support surface 12i. The front end of the support surface 12i is further bent downward to form contact portions 12j and 12j that contact the side wall 24 of the steel pulling 20 from the inside. The contact surface 12j also functions as a reinforcing rib for the plate-like support arm 12h. An appropriate cushioning material 12k may be attached to the support surface 12i in order to improve the contact state with the steel pulling 20 and to absorb vibration and prevent metallic noise. Leaf springs 13 are fixed to the bundle 10 at positions on both sides of the support side 12g. Each leaf spring 13 is made by forming a single leaf spring into a shape surrounding the seating portion 12c. The upper end of the vertical portion 12g that stands up from the edge of the seating portion 12c is a locking portion 13c bent at an acute angle, and the locking portion 13c is further bent at a sharp angle to form a guide side 13e.
[0018]
The steel pulling 20 connected to the bundle 10 forms seating sides 21R, 21L, guided sides 22, 22 and engaging sides 23, 23 by sequentially bending both sides of the steel plate inward. Between the seating sides 21R and 21L is an opening 27 into which the plate-like support arm 12h is inserted. Since the steel pulling 20 produced by bending both sides inward in this way has no overhangs or protrusions on the sides, it can be easily transported and handled on the construction site.
In the example of FIG. 6, the plate-like support arm 12 h and the support surface 12 i of the bundle 10 are fitted into the steel draw 20 from the end opening of the steel draw 20, and the bundle 10 is drawn by the steel draw 20. Is moved to a predetermined position of the steel large pull 20. At this stage, the contact surface 12j contacts the inner surface of the side wall 24 (FIG. 6b).
[0019]
When the bundled article 10 is positioned at a predetermined position of the steel large pull 20 and then the steel large pull 20 is pushed down, the seating sides 21R and 21L are expanded while the guided side 22 is in contact with the guide side 13e. When the guided side 22 gets over the guiding side 13e, the opening 27 is narrowed by the elastic restoring force, and the engaging side 23 is engaged with the locking portion 13c (FIG. 6c). At this time, the support side 12i comes into contact with the upper side 26 of the steel pulling 20 from the inside. That is, since the corner portion of the steel pulling 20 that is easily deformed by contact with a foreign object or the like is supported from the inside by the support side 12i and the contact surface 12j, the deformation of the steel pulling 20 is prevented. Further, when the cushioning material 12k is interposed between the support side 12i and the upper side 26, the force and vibration applied to the steel pulling 20 from above are absorbed by the buffering material 12k. Prevention becomes more effective.
[0020]
In this way, the floor panel is arranged on the steel pulling 20 that is firmly connected to the bundle 10, so that a firm floor structure is constructed. In addition, since the bundle 10 attached to the steel pull 20 can be erected on the ground GL, the steel pull 20 can be handed over, so that workability is greatly improved.
[0021]
【The invention's effect】
As described above, the connection structure of the present invention employs a method in which the engagement side formed on the spring portion of the bundle and the engagement side of the steel pulling are engaged in a surface contact state. Steel pulling is firmly connected to the bundle, and a connection structure having resistance to pulling force in the vertical direction and displacement along the longitudinal direction is obtained. In addition, since the steel pulling is connected by simply inserting the steel pulling between the pair of leaf springs from above, the workability is greatly improved. When a joist is placed on the steel pull attached in this way and a floor panel is laid, a firm floor structure is easily constructed.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a floor structure. FIG. 2 is a conventional structure for connecting a steel pull to a bundle. FIG. 3 is a view for explaining an example of connecting a steel pull to a bundle according to the present invention. 4] FIG. 5 is a diagram for explaining another example of connecting a steel drawing to a bundle according to the present invention. [FIG. 5] Another example showing the connection between a bundle and a steel drawing. Another example showing connection with pull [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10: Bundle 11: Support bolt 12: Large receiving plate 12a, b: Bending part 12c: Seating part (plate-like base part) 12d: Reinforcement bead 12e: Restraint protrusion 12f: Notch 12h: Plate-like support arm 12i: Support surface 12j: Contact surface 13: Leaf spring 13a: Mounting portion 13b: Elastic deformation portion 13c: Locking portion 13d: Locking side 13e: Guide side 13f: Opening portion 20: Steel pulling 21, 21R, 21L: Seating side ( Lower side) 22: Guided side 23: Engagement side 24: Side wall side 25: Overhang part 26: Support side 27: Opening part 28: Reinforcing rib α: Angle between the seating part and the bent part of the large receiving plate β: Angle between the elastic deformation portion of the leaf spring and the locking side γ: Angle between the locking side of the leaf spring and the guide side

Claims

地盤から起立する束金物に、根太が載置される鋼製大引きを連結する構造であり、
地盤から起立する支持ボルトの上端に固着された板状基部を含む大引き受け板と、大引き受け板に固着され又は大引き受け板の両側を折り曲げて形成したバネ部とを有し、バネ部は板状基部に固着される取付け部よりも実効幅の狭い弾性変形部を介して鋭角的に折れ曲がった係止辺及び案内辺が上部に形成された束金物と、
下辺と、バネ部の案内辺と同じ傾斜角度で下辺の一側から立ち上がった被案内辺と、被案内辺から屈曲し、バネ部の係止辺に面接触する係合辺と、下辺の他側又は係合辺から上方に延びる側壁辺とを有し、ほぼ矩形状の中空断面をもつ鋼製大引きとを備え、
鋼製大引きが大引き受け板の上方から押し下げられることにより、バネ部の係止辺と鋼製大引きの係合辺が面接触状態で噛み合う鋼製大引きの連結構造。It is a structure that connects steel pulling on which joists are placed to a bundle that stands up from the ground,
A large receiving plate including a plate-like base fixed to the upper end of a support bolt standing up from the ground, and a spring portion fixed to the large receiving plate or formed by bending both sides of the large receiving plate. A bundle formed with a locking side and a guide side bent at an acute angle via an elastically deforming portion having an effective width narrower than the mounting portion fixed to the base , and
A lower side , a guided side rising from one side of the lower side at the same inclination angle as the guide side of the spring part, an engaging side bent from the guided side and in surface contact with the locking side of the spring part, and the other side of the lower side A side wall or a side wall extending upward from the engagement side, and a steel drawstring having a substantially rectangular hollow cross section,
A steel pulling connection structure in which the engaging edge of the spring portion and the engaging edge of the steel pulling are engaged in a surface contact state when the steel pulling is pushed down from above the pulling receiving plate .

鋼製大引きの底部に長手方向に延びる開口部が形成されており、開口部に嵌まり込む拘束突起が束金物の大引き受け板に形成されている請求項１記載の連結構造。 The connection structure according to claim 1, wherein an opening extending in the longitudinal direction is formed at a bottom of the steel large pull, and a restraining projection that fits into the opening is formed on the large pull receiving plate of the bundle.

開口部に両側から臨む鋼製大引きのリブが嵌まり込む切欠きが拘束突起の両側立上り部に形成されている請求項２記載の連結構造。 The connection structure according to claim 2, wherein a notch into which a steel large pulling rib facing the opening from both sides is formed at both side rising portions of the restraining protrusion.

板状基部の両側中央部から垂直上方に伸びた板状支持アームを備え、板状支持アームの上部が折り曲げられて、鋼製大引きの上面及び側壁辺にそれぞれ内側から接触する支持辺及び当接面が形成されている束金物を使用する請求項１〜３何れかに記載の連結構造。 A plate- like support arm is provided that extends vertically upward from the center of both sides of the plate-like base, and the upper portion of the plate-like support arm is bent to contact the upper side and the side of the steel puller from the inside and the contact side. The connection structure according to any one of claims 1 to 3, wherein a bundled object on which a contact surface is formed is used.