JP2004353347A

JP2004353347A - Connection mechanism of steel frame member

Info

Publication number: JP2004353347A
Application number: JP2003153360A
Authority: JP
Inventors: Kenji Kogo; 賢司向後
Original assignee: MATSUYAMA KOZAI KK
Current assignee: MATSUYAMA KOZAI KK
Priority date: 2003-05-29
Filing date: 2003-05-29
Publication date: 2004-12-16
Anticipated expiration: 2023-05-29
Also published as: JP3739367B2

Abstract

<P>PROBLEM TO BE SOLVED: To connect a square steel tube on one side with a steel frame member on the other side so as to cross them orthogonally and mutually to obtain high connection strength with satisfactory workability by a comparatively simple configuration. <P>SOLUTION: This connection mechanism is composed of square steel tubes 2, 3 and an L-shaped fitting 7 arranged in their connection part. Screw positioning hole parts 15, 16, 17, 18 restraining moving of a screw part 14 of a bolt 8 to be inserted in the radial direction and screw movable hole parts 19, 20 releasing restraint of screws are integrally provided as screw mounting holes 10, 12 on side faces 11, 13 of the square steel tubes 2, 3. Long holes 21, 22, 23, 24 are formed in each flat plate part 5, 6 of the L-shaped fitting 7. These long holes regulate moving of the screw part 14 of the bolt 8 to be inserted in the radial direction between the screw movable hole parts and the screw positioning hole parts. A nut 9 is screw-fitted in a screw part of a bolt positioned in the screw positioning hole part, thereby connecting the square steel tubes 2, 3 so as to cross orthogonally and mutually. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、鉄骨材の連結機構に係り、特に角形鋼管どうしや、また角形鋼管を他種の鉄骨材と直交させるかたちで連結するための鉄骨材の連結機構に関する。
【０００２】
【従来の技術】
従来より、鉄骨材どうしを垂直に突合わせて連結する機構としては、骨材どうしの接合部位にＬ字形金具を用いる機構が知られている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特許公報，特許第３２０７８１８号（第２−３頁，図１〜図５）
【０００４】
すなわち、この特許文献の連結機構では、水平に配置される一方のリップ溝形鋼の内部（リップの裏側）にＬ字形金具の一方の曲折片を挿入可能に形成するとともに、この一方の曲折片に形成したボルト穴を中心に、リップ溝形鋼の内部側に切り起こし片を突出させ、切り起こし片にナットを装着するものである。
【０００５】
さらに、この連結機構では、上記一方のリップ溝形鋼のリップ溝の上面側に当て板を重ね、この当て板と上記一方の曲折片とでリップを挟持したかたちで上記ナットにボルトを締結する。また、Ｌ字形金具の他方の曲折片には、縦長のボルト穴が形成されており、この縦長のボルト穴を通じて、他方のリップ溝形鋼をＬ字形金具の他方の曲折片に固定することで、当該リップ溝形鋼と他方の鉄骨材とを互いに直交させるかたちで連結するものとなっている。
【０００６】
【発明が解決しようとする課題】
かかる特許文献の連結機構においては、骨材間の接合に例えば溶接等を適用することなくリップ溝形鋼の連結が実現されることになるが、これに代えて、角形鋼管どうしや角形鋼管と他種の鉄骨材とを比較的簡単な構成で、しかも作業性良く連結できる機構を開発することへの要請がある。
【０００７】
また、上述した特許文献の連結機構は、リップ溝形鋼、つまり鉄骨材とＬ字形金具の曲折片とを締結する部分の構造が、実質的に、曲折片上の単一のボルト穴を通じての一組のボルト及びナットによる締結で実現されている。この点に着目すると、ボルトの回転方向（特にボルトの緩む方向）、つまり骨材どうしのねじれ方向における連結力の改善を図れる余地があり、上述した角形鋼管の連結機構を構成する場合においても、上記ねじれ方向の強度を含む全体的な連結強度の向上が求められる。
【０００８】
本発明は、このような課題を解決するためになされたもので、簡易的な構成で作業性良くしかも高い連結強度が得られるように角形鋼管の連結を実現する鉄骨材の連結機構の提供を目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る鉄骨材の連結機構は、挿通されるねじの径方向への移動を拘束する一対のねじ位置決め孔部と、これらねじ位置決め孔部の間に設けれねじの拘束を解放するねじ可動孔部とが、ねじ取付穴として一体的に側面に穿孔された角形鋼管と、他方の平板部に直交する一方の平板部が前記角形鋼管上の前記ねじ取付穴に対向するように配置され、該ねじ取付穴を介して挿通されるねじの径方向への移動を、前記ねじ可動孔部と一方又は他方の前記ねじ位置決め孔部との間に各々規制する一対の長孔が該一方の平板部上に穿孔されたＬ字形金具と、前記角形鋼管上の前記ねじ取付穴と前記Ｌ字形金具上の一方又は他方の前記長孔とをねじ部がそれぞれ挿通する一対のボルトと、前記ねじ取付穴の各ねじ位置決め孔部に各々位置決めされた各ボルトのねじ部とそれぞれ螺合する一対のナットとを具備することを特徴とするものである。
【００１０】
すなわち、本発明は、角形鋼管上のねじ取付穴におけるねじ可動孔部、及びＬ字形金具の一方の平板部上の一対の長孔に各ボルトのねじ部をそれぞれ挿通させ、さらに、例えばねじ取付穴におけるねじ位置決め孔部にねじ部が位置決めされるように個々の長孔内で各ボルトをそれぞれスライドさせ、さらに位置決めされた各ボルトのねじ部にナットをそれぞれ螺合して角形鋼管とＬ字形金具との締結が実現されるものである。
【００１１】
これにより、本発明では、角形鋼管どうしや、また、角形鋼管と他種の鉄骨材とをＬ字形金具を通じて互いを直交させるかたちで連結することができる。したがって、本発明では、孔部へのボルトの挿入作業や位置決め作業等、各構成部材の位置合せを含むこれらの部材の取付けを容易に行うことができ、連結作業の効率化を図ることができる。ここで、角形鋼管とＬ字形金具とを締結する手順としては、角形鋼管上のねじ取付穴におけるねじ可動孔部、及びＬ字形金具の一方の平板部上の一対の長孔に各ボルトのねじ部をそれぞれ挿通させた後、ねじ部にナットを仮止め（半締結状態となる接合）し、さらに各ボルトのねじ部がねじ位置決め孔部へ位置決めされるようにスライドさせた後、ねじ部にナットを本締めする手順を選択するようにしてもよい。
【００１２】
また、本発明では、角形鋼管に穿孔されたねじ位置決め孔部及びねじ可動孔部を有するねじ取付穴と、一方の平板部に一対の長孔が穿孔されたＬ字形金具と、これらを締結するボルト及びナットとからなる簡易的な構成で角形鋼管を連結する機構を構築することができる。
【００１３】
さらに、本発明では、角形鋼管に穿孔された一対のねじ位置決め孔部、及びＬ字形金具の一方の平板部に穿孔された一対の長孔の周縁部を２組のボルト及びナットによる締結、すなわち一対の締結部位で、当該連結機構の締結部分が構成されている。これにより、本発明では、一方の角形鋼管と他方の鉄骨材とのねじれ方向（例えばボルトが緩む方向等）の連結力を高めることができ、構造体全体としての連結強度を向上させることができる。
【００１４】
したがって、本発明の鉄骨材の連結機構によれば、簡易的な構成で作業性良くしかも高い連結強度が得られるように角形鋼管の連結を実現することができる。
【００１５】
ここで、本発明においては、前記角形鋼管の長手方向と前記一対の長孔の長手方向とが各々直交するように、該一対の長孔が前記Ｌ字形金具上の前記一方の平板部に穿孔されることが好ましい。このような向きで長孔を形成することで、角形鋼管における上記ねじれ方向の連結強度を高めることができる。
【００１６】
また、本発明の鉄骨材の連結構造においては、前記一対のナットが、前記Ｌ字形金具の前記一方の平板部と接触する位置で前記一対のボルトのねじ部と各々螺合する構造にすることが望ましい。この場合、角形鋼管の内側からねじ取付穴を介して外側に突出させるように配置したボルトのねじ部に対し、Ｌ字形金具における一方の平板部上の一対の長孔やナットを容易に位置合せして取り付けることができ、これにより、角形鋼管を連結する際の作業性を向上させることができる。
【００１７】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づき説明する。
図１は、本発明の実施形態に係る鉄骨材の連結機構を示す斜視図、図２は、図１の鉄骨材の連結機構を適用し角形鋼管どうしを連結した連結機構を示す斜視図、図３は、図２の連結機構の分解斜視図である。なお、図１ないし図３は、各鉄骨材（角形鋼管）の先端部を破断図で示している。
【００１８】
図１に示すように、この実施形態の鉄骨材の連結機構１は、一方の角形鋼管２と、他方の鉄骨材とを互い直交させるかたちで連結するための機構である。上記他方の鋼管材としては、同種の角形鋼管や、リップ溝形鋼等を始めとする種々の鋼管材を適用することができる。
【００１９】
本実施形態では、図２、図３に示すように、角形鋼管２、３どうしを連結する場合を例示し、以下これを詳細に説明する。同図２、図３では、水平方向に寝かせた姿勢で配置した一方の角形鋼管２と、垂直方向に起立した姿勢で配置した他方の角形鋼管３とを連結した機構を図示している。
【００２０】
すなわち、図１ないし図３に示すように、この実施形態の鉄骨材の連結機構は、角パイプとも称する角形鋼管２、３と、角形鋼管２、３どうしの連結部であるコーナ部分に配置され、互いに直交する平板部５、６からなるＬ字形金具７と、角形鋼管２、３とＬ字形金具７とを締結する複数のボルト８及びナット９とで構成されている。
【００２１】
一方の角形鋼管２には、Ｌ字形金具７の一方の平板部５に対向する側面１１に、ねじ取付穴１０が穿孔されている。また、他方の角形鋼管３には、Ｌ字形金具５の他方の平板部６に対向する側面１３にねじ取付穴１２が穿孔されている。
【００２２】
また、これらねじ取付穴１０、１２は、互いに所定の離間距離をおいて設けられ、挿通されたボルト８のねじ部１４の径方向への移動を拘束する各々一対のねじ位置決め孔部１５、１６及びねじ位置決め孔部１７、１８と、これらねじ位置決め孔部１５、１６どうし、又はねじ位置決め孔部１７、１８どうしをそれぞれ繋ぐように穿孔され、ボルト８の上記拘束をそれぞれ解放するねじ可動孔部１９、２０とからなる。このようなねじ可動孔部とねじ位置決め孔部とからなるねじ取付穴１０、１２は、角形鋼管２、３の各側面１１、１３にそれぞれ一体的に穿孔されている。
【００２３】
詳述すると、ねじ取付穴１０、１２のねじ可動孔部１９、２０は、それぞれ、角形鋼管２、３の各側面１１、１３に矩形状に穿孔されており、その矩形の孔部の長手方向が、角形鋼管２、３の長手方向と直交するように形成されている。ここで、矩形のねじ可動孔部１９、２０における短手方向及び長手方向のサイズは、ボルト８のねじ部１４の外径部よりも十分に大きいサイズで形成されている。
【００２４】
一方、ねじ位置決め孔部１５、１６及びねじ位置決め孔部１７、１８は、一方の端部がねじ可動孔部１９、２０に繋がるかたちの小判孔形状に形成されている。すなわち、これらねじ位置決め孔部１５、１６及びねじ位置決め孔部１７、１８は、ねじ可動孔部１９、２０を長手方向から挟むようにして穿孔されている。このようなほぼ小判孔形状の各位置決め孔部は、ボルト８のねじ部１４の外径部分と遊嵌するように、その内壁部分（鋼管の端面）が、ねじ部１４の外径部よりも僅かに大きくなるサイズで形成されている。
【００２５】
したがって、ねじ取付穴１０、１２内にねじ部１４が挿通されたボルト８は、それぞれ矩形のねじ可動孔部１９、２０の範囲内では、角形鋼管２、３の長手方向及び短手方向のいずれの方向へも移動（スライド）可能であり、一方、ねじ位置決め孔部１５、１６及びねじ位置決め孔部１７、１８の範囲内では、角形鋼管２、３の長手方向への移動（スライド）が拘束される。
【００２６】
また、Ｌ字形ピースとも称する上記Ｌ字形金具７は、詳細には、一方の平板部５が、角形鋼管２の側面１１のねじ取付穴１０及びその周辺部に対向するように配置されている。さらに、Ｌ字形金具７の他方の平板部６は、角形鋼管３の側面１３のねじ取付穴１２及びその周辺部に対向するように配置されている。ここで、Ｌ字形金具７は、山形鋼で作製したピースであってもよいし、また、鋼板に曲げ加工を施して作製したピース（板曲げピース）であってもよい。
【００２７】
また、Ｌ字形金具７の一方の平板部５には、一対の長孔２１、２２が穿孔され、さらに、Ｌ字形金具７の他方の平板部６には、一対の長孔２３、２４が穿孔されている。これら長孔２１、２２、２３、２４は、各々の幅が、ボルト８のねじ部１４の幅よりも僅かに大きいサイズになる小判孔形状で形成されている。ここで、各々一対の長孔２１、２２及び長孔２３、２４の長手方向は、角形鋼管２、３の長手方向と直交する向きで形成されている。
【００２８】
したがって、Ｌ字形金具７の一方の平板部５上に穿孔された長孔２１、２２は、一方の角形鋼管２のねじ取付穴１０を介して挿通されたボルト８のねじ部１４の径方向への移動（スライド）を、ねじ可動孔部１９と一方のねじ位置決め孔部１５との間、又はねじ可動孔部１９と他方のねじ位置決め孔部１６との間に各々規制する。
【００２９】
また、Ｌ字形金具７の他方の平板部６に穿孔された長孔２３、２４は、他方の角形鋼管３のねじ取付穴１２を介して挿通されたボルト８のねじ部１４の径方向への移動（スライド）を、ねじ可動孔部２０と一方のねじ位置決め孔部１７との間、又はねじ可動孔部２０と他方のねじ位置決め孔部１８との間に各々規制する。
【００３０】
ここで、上記ねじ取付穴１０、１２は、角形鋼管２における長手方向の一方の末端面２５と、角形鋼管３の側面１３の裏側の側面（背面）２６とが、いわゆるほぼ面一（同一面）になる状態で連結されるように、それぞれ角形鋼管２、３の側面１１、１３における一方の端部に設けられている。
【００３１】
また、複数のボルト８は、角形鋼管２、３上のねじ取付穴１０、１２とＬ字形金具７の各平板部５、６上の長孔２１、２２、２３、２４とをねじ部１４がそれぞれ挿通するように配置されている。詳細には、複数のボルト８は、個々のねじ部１４が、ねじ取付穴１０、１２を介して角形鋼管２、３の内側から外側に向かって突出するように取り付けられている。
【００３２】
また、複数のナット９は、角形鋼管２、３上のねじ取付穴１０、１２の各ねじ位置決め孔部１５、１６及びねじ位置決め孔部１７、１８に各々位置決めされた各ボルト８のねじ部１４とそれぞれ螺合する。詳述すると、複数のナット９は、角形鋼管２、３上のねじ位置決め孔部１５、１６、１７、１８の外縁部、及びＬ字形金具７の各平板部５、６上の長孔２１、２２、２３、２４の外縁部を、複数のボルト８の頭部２７との間で挟みつつ、各ボルト８のねじ部１４と各々螺合する。すなわち、ボルト８及びナット９により、角形鋼管２、３とＬ字形金具７の各平板部５、６とが締結され、これにより、角形鋼管２、３どうしは、互いに直交するように連結される。
【００３３】
ここで、ナット９の取付位置について詳述すると、ナット９は、Ｌ字形金具７の各平板部５、６と接触する側（角形鋼管２、３の外側）から取り付けられている。つまり、この構成では、ボルト８のねじ部１４に対し、Ｌ字形金具７の各平板部５、６上の各長孔やナット９を容易に位置合わせすることができ、連結作業を効率良く行うことができる。
【００３４】
このように構成された本実施形態の鉄骨材の連結機構では、例えば、まず角形鋼管２、３上のねじ取付穴１０、１２のねじ可動孔部１９、２０及びＬ字形金具７の各平板部５、６上の各々一対の長孔２１、２２、２３、２４に各ボルト８のねじ部１４を各々挿通させる。次いで、このボルト８のねじ部１４が、ねじ取付穴１０、１２のねじ位置決め孔部１５、１６、１７、１８に位置決めされるように、個々の長孔２１、２２、２３、２４内で各ボルト８を角形鋼管２、３の短手方向における側面１１、１３上の中央部から縁部側に（図３中の矢印Ｙ１、Ｙ２方向）スライドさせる。さらに位置決めされた各ボルト８のねじ部１４にナット９をそれぞれ螺合することで、角形鋼管２、３とＬ字形金具７との締結が実現されるものである。これにより、本実施形態の鉄骨材の連結機構では、角形鋼管２、３どうしをＬ字形金具７を通じて互いを直交させるかたちで連結することができる。
【００３５】
したがって、本実施形態の鉄骨材の連結機構では、各孔部へのボルトの挿入作業や位置決め作業等、各構成部材の位置合せを含むこれらの部材の取付けを容易に行うことができ、連結作業の効率化を図ることができる。
【００３６】
また、本実施形態の鉄骨材の連結構造では、角形鋼管２、３に穿孔されたねじ位置決め孔部及びねじ可動孔部を有するねじ取付穴１０、１２と、各平板部５、６に各々一対の長孔が穿孔されたＬ字形金具７と、これらを締結するボルト８及びナット９とからなる簡易的な構成で角形鋼管２、３どうしを連結する機構を構築することができる。
【００３７】
さらに、本実施形態の鉄骨材の連結機構では、角形鋼管２、３に各々穿孔された一対のねじ位置決め孔部、及びＬ字形金具の各平板部に穿孔された一対の長孔の周縁部が、２組のボルト及びナットにより締結されるので、当該連結機構の締結部分が一対の締結部位で構成されていることになる。これにより、本実施形態の連結機構によれば、角形鋼管２、３どうしのねじれ方向（例えばボルトが緩む方向等）の連結力を高めることができ、構造体全体としての連結強度を向上させることができる。
【００３８】
なお、本発明を上記実施の形態により具体的に説明したが、本発明はこの実施形態にのみ限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。例えば、上記ボルト８とナット９との取り付けを上記実施形態と逆の配置にしてもよい。すなわち、複数のボルト８を、ねじ取付穴１０、１２を介して角形鋼管２、３の外側から内側に向かって突出するように挿通させ、ナット９を角形鋼管２、３の内側面と接触する側（側面１１、１３の各裏側面）から取り付けるようにしてもよい。
【００３９】
また、上記実施形態では、角形鋼管２、３の長手方向に対し、各々一対の長孔２１、２２、２３、２４が、自身の長手方向を直交させるようにして、Ｌ字形金具７の各平板部５、６上に穿孔されていたが、これに代えて、角形鋼管２、３の長手方向に対し、上記長孔を斜めに傾けて穿孔してもよい。この場合、これら長孔の向き及び位置に対応するように、ねじ位置決め孔部及びねじ可動孔部を有するねじ取付穴１０、１２の形状及び位置を適宜変更することが望ましい。
【００４０】
また、地震の発生等により、外来振動が、本実施形態の連結機構に加わってしまう場合等を考慮して、例えばＬ字形金具７の平板部５、６上の長孔２１、２２、２３、２４の周縁部と各ナット９との間に、緩衝部材として例えばスプリングワッシャ等を介在させるようにしてもよい。
【００４１】
また、上記実施形態では、角形鋼管どうしを連結する機構であったが、これに代えて一方の角形鋼管を他種の鉄骨材に連結するようにしてもよい。例えば、図４は、角形鋼管２とリップ溝形鋼３５とを連結する機構の一例を示すものである。この連結機構は、例えばＬ字形金具３２の他方の平板部６にリップ溝形鋼３５の上部側（リップ溝の形成面に対向する背面側）を対向させるようにして構成されている。詳述すると、この連結機構は、同図４に示すように、他方の平板部６の中央部分に単一のねじ挿通孔３１が形成されたＬ字形金具３２を適用するとともに、このねじ挿通孔３１対応するねじ挿通孔３３がリップ溝の形成面に対向する背面３４に形成されたリップ溝形鋼３５を適用すること等で実現されている。
【００４２】
【発明の効果】
以上説明したように、本発明の鉄骨材の連結機構によれば、比較的簡単な構成で、角形鋼管どうしや、また角形鋼管と他種の鉄骨材との連結を実現するとともに、その連結作業の効率化を図ることができ、しかも高い連結強度を得ることができる。
【図面の簡単な説明】
【図１】本発明の実施形態に係る鉄骨材の連結機構を示す斜視図である。
【図２】図１の鉄骨材の連結機構を適用した、角形鋼管どうしを連結する機構を示す斜視図である。
【図３】図２に示す連結機構の分解斜視図である。
【図４】図３の機構と構造の異なる他の連結機構を示す分解斜視図である。
【符号の説明】
１…鉄骨材の連結機構、２，３…角形鋼管、５，６…Ｌ字形金具の平板部、７，３２…Ｌ字形金具、８…ボルト、９…ナット、１０，１２…ねじ取付穴、１１，１３…角形鋼管の側面、１４…ボルトのねじ部、１５，１６，１７，１８…ねじ位置決め孔部、１９，２０…ねじ可動孔部、２１，２２，２３，２４…長孔、３５…リップ溝形鋼。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel frame connection mechanism, and more particularly, to a steel frame connection mechanism for connecting rectangular steel pipes or a rectangular steel pipe so as to be orthogonal to other types of steel frames.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a mechanism that uses L-shaped metal fittings at a joint portion between aggregates is known as a mechanism for vertically connecting steel aggregates (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Patent Gazette, Japanese Patent No. 3207818 (page 2-3, FIGS. 1 to 5)
[0004]
That is, in the connecting mechanism of this patent document, one bent piece of the L-shaped metal fitting is formed so as to be insertable inside one lip channel steel (back side of the lip) arranged horizontally, and this one bent piece. With the bolt hole formed in the center, the cut and raised piece is protruded to the inner side of the lip channel steel, and a nut is attached to the cut and raised piece.
[0005]
Further, in this connection mechanism, a backing plate is stacked on the upper surface side of the lip groove of the one lip groove shape steel, and a bolt is fastened to the nut in such a manner that the lip is sandwiched between the backing plate and the one bent piece. . The other bent piece of the L-shaped bracket is formed with a vertically long bolt hole, and the other lip groove steel is fixed to the other bent piece of the L-shaped bracket through the vertically long bolt hole. The lip groove steel and the other steel frame are connected in a manner that they are orthogonal to each other.
[0006]
[Problems to be solved by the invention]
In such a connection mechanism of the patent document, the connection of the lip groove steel is realized without applying, for example, welding or the like to the joint between the aggregates. Instead, the square steel pipes and the square steel pipes are connected. There is a need to develop a mechanism that can connect other types of steel frames with a relatively simple structure and good workability.
[0007]
Further, in the above-described connection mechanism of the patent document, the structure of the portion that fastens the lip groove steel, that is, the steel frame and the bent piece of the L-shaped metal fitting, substantially passes through a single bolt hole on the bent piece. It is realized by fastening with a set of bolts and nuts. Focusing on this point, there is room to improve the connection force in the rotation direction of the bolt (particularly the direction in which the bolt is loosened), that is, the torsional direction of the aggregates. Improvement of the overall connection strength including the strength in the twist direction is required.
[0008]
The present invention has been made to solve such a problem, and provides a steel frame connection mechanism that realizes the connection of square steel pipes so as to obtain a high connection strength with a simple structure and good workability. Objective.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a steel frame connection mechanism according to the present invention is provided between a pair of screw positioning holes and a screw positioning hole that restricts the radial movement of the inserted screw. The screw movable hole for releasing the restraint of the screw is a square steel pipe integrally drilled on the side surface as a screw mounting hole, and one flat plate part orthogonal to the other flat plate part is the screw mounting hole on the square steel pipe A pair of screws that are arranged so as to oppose each other and restrict movement in the radial direction of a screw inserted through the screw mounting hole between the screw movable hole portion and one or the other screw positioning hole portion. Are inserted into the L-shaped metal fitting in which the long hole is drilled on the one flat plate portion, the screw mounting hole on the rectangular steel pipe, and one or the other long hole on the L-shaped metal fitting. A pair of bolts and each screw positioning of the screw mounting hole It is characterized in that it comprises a pair of nuts respectively screwed with the screw portion of the bolt are respectively positioned on the parts.
[0010]
That is, according to the present invention, a screw movable hole portion in a screw mounting hole on a square steel pipe and a pair of long holes on one flat plate portion of an L-shaped metal fitting are inserted through the screw portions of each bolt, respectively, for example, screw mounting Each bolt is slid in each elongated hole so that the screw portion is positioned in the screw positioning hole portion in the hole, and a nut is screwed into the screw portion of each positioned bolt, and the square steel pipe and the L-shape The fastening with the metal fitting is realized.
[0011]
Thereby, in this invention, a square steel pipe and a square steel pipe and another kind of steel frame material can be connected through the L-shaped metal fitting mutually orthogonally. Therefore, according to the present invention, it is possible to easily attach these members including the positioning of each component member such as the bolt insertion operation and the positioning operation into the hole, and the connection operation can be made more efficient. . Here, as a procedure for fastening the square steel pipe and the L-shaped metal fitting, the screw movable hole portion in the screw mounting hole on the square steel pipe and the screw of each bolt in the pair of long holes on one flat plate portion of the L-shaped metal fitting. After each part is inserted, the nut is temporarily fixed to the threaded part (joined in a semi-fastened state), and the threaded part of each bolt is slid so that it is positioned in the threaded positioning hole, The procedure for final tightening of the nut may be selected.
[0012]
Moreover, in this invention, the screw attachment hole which has the screw positioning hole part and screw movable hole part which were pierced in the square steel pipe, the L-shaped metal fitting by which one pair of long holes were pierced in one flat plate part, and these are fastened. It is possible to construct a mechanism for connecting square steel pipes with a simple configuration including bolts and nuts.
[0013]
Furthermore, in the present invention, a pair of screw positioning holes drilled in a square steel pipe and a pair of long holes drilled in one flat plate of the L-shaped bracket are fastened by two sets of bolts and nuts, A fastening portion of the coupling mechanism is constituted by a pair of fastening portions. Thereby, in this invention, the connection force of the twist direction (for example, direction where a volt | bolt loosens, etc.) of one square steel pipe and the other steel frame can be raised, and the connection strength as the whole structure can be improved. .
[0014]
Therefore, according to the steel frame connection mechanism of the present invention, it is possible to realize the connection of square steel pipes with a simple structure and good workability and high connection strength.
[0015]
Here, in the present invention, the pair of long holes are drilled in the one flat plate portion on the L-shaped metal fitting so that the longitudinal direction of the rectangular steel pipe and the longitudinal direction of the pair of long holes are orthogonal to each other. It is preferred that By forming the long hole in such a direction, the connection strength in the torsional direction in the square steel pipe can be increased.
[0016]
Further, in the steel frame connection structure of the present invention, the pair of nuts are respectively screwed with the screw portions of the pair of bolts at positions where they come into contact with the one flat plate portion of the L-shaped bracket. Is desirable. In this case, a pair of long holes and nuts on one flat plate part of the L-shaped bracket are easily aligned with the screw part of the bolt arranged to protrude outward from the inside of the square steel pipe through the screw mounting hole. Thus, the workability when connecting the square steel pipes can be improved.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a connecting mechanism for steel aggregates according to an embodiment of the present invention, FIG. 2 is a perspective view showing a connecting mechanism in which square steel pipes are connected by applying the connecting mechanism for steel aggregates of FIG. 3 is an exploded perspective view of the coupling mechanism of FIG. 1 to 3 show cut ends of the respective steel frame members (square steel pipes).
[0018]
As shown in FIG. 1, the steel frame connection mechanism 1 of this embodiment is a mechanism for connecting one rectangular steel pipe 2 and the other steel frame in a manner to be orthogonal to each other. As the other steel pipe material, various steel pipe materials such as the same kind of square steel pipe, lip groove steel, and the like can be applied.
[0019]
In this embodiment, as shown in FIG. 2 and FIG. 3, the case where the square steel pipes 2 and 3 are connected is illustrated, and this is demonstrated in detail below. FIGS. 2 and 3 show a mechanism in which one square steel pipe 2 arranged in a horizontal position is connected to the other square steel pipe 3 arranged in a vertical position.
[0020]
That is, as shown in FIGS. 1 to 3, the steel aggregate connection mechanism of this embodiment is disposed at a corner portion which is a connection portion between the square steel pipes 2 and 3, also called square pipes, and the square steel pipes 2 and 3. The L-shaped metal fitting 7 composed of the flat plate portions 5 and 6 orthogonal to each other, and a plurality of bolts 8 and nuts 9 for fastening the square steel pipes 2 and 3 and the L-shaped metal fitting 7 together.
[0021]
One square steel pipe 2 has a screw mounting hole 10 formed in a side surface 11 facing the one flat plate portion 5 of the L-shaped metal fitting 7. The other square steel pipe 3 has a screw mounting hole 12 formed in a side surface 13 of the L-shaped bracket 5 facing the other flat plate portion 6.
[0022]
The screw mounting holes 10 and 12 are provided at a predetermined distance from each other, and each of the pair of screw positioning holes 15 and 16 restrains movement of the threaded portion 14 of the bolt 8 inserted in the radial direction. And the screw positioning hole portions 17 and 18 and the screw movable hole portions which are drilled so as to connect the screw positioning hole portions 15 and 16 or the screw positioning hole portions 17 and 18, respectively, and release the restraint of the bolt 8 respectively. 19 and 20. The screw mounting holes 10 and 12 including the screw movable hole portion and the screw positioning hole portion are integrally drilled in the side surfaces 11 and 13 of the square steel pipes 2 and 3, respectively.
[0023]
More specifically, the screw movable holes 19 and 20 of the screw mounting holes 10 and 12 are respectively formed in a rectangular shape on the side surfaces 11 and 13 of the square steel pipes 2 and 3, and the longitudinal direction of the rectangular holes Is formed so as to be orthogonal to the longitudinal direction of the square steel pipes 2 and 3. Here, the sizes of the rectangular screw movable hole portions 19 and 20 in the short side direction and the long side direction are formed to be sufficiently larger than the outer diameter portion of the screw portion 14 of the bolt 8.
[0024]
On the other hand, the screw positioning holes 15 and 16 and the screw positioning holes 17 and 18 are formed in an oval shape in which one end is connected to the screw movable holes 19 and 20. That is, the screw positioning holes 15 and 16 and the screw positioning holes 17 and 18 are perforated so as to sandwich the screw movable holes 19 and 20 from the longitudinal direction. Each of the positioning holes having a substantially oval shape has an inner wall portion (an end surface of the steel pipe) that is larger than the outer diameter portion of the screw portion 14 so that the outer diameter portion of the screw portion 14 of the bolt 8 is loosely fitted. It is formed with a slightly larger size.
[0025]
Therefore, the bolt 8 having the threaded portion 14 inserted into the screw mounting holes 10 and 12 is within the range of the rectangular screw movable hole portions 19 and 20, respectively, in either the longitudinal direction or the short direction of the rectangular steel pipes 2 and 3. On the other hand, within the range of the screw positioning holes 15 and 16 and the screw positioning holes 17 and 18, the movement (sliding) of the rectangular steel pipes 2 and 3 in the longitudinal direction is restricted. Is done.
[0026]
The L-shaped metal fitting 7, which is also referred to as an L-shaped piece, is arranged in detail so that one flat plate portion 5 faces the screw mounting hole 10 on the side surface 11 of the square steel pipe 2 and its peripheral portion. Furthermore, the other flat plate portion 6 of the L-shaped metal fitting 7 is disposed so as to face the screw mounting hole 12 on the side surface 13 of the rectangular steel pipe 3 and its peripheral portion. Here, the L-shaped metal fitting 7 may be a piece made of angle steel, or may be a piece (plate bending piece) made by bending a steel plate.
[0027]
In addition, a pair of long holes 21 and 22 are perforated in one flat plate portion 5 of the L-shaped bracket 7, and a pair of long holes 23 and 24 are perforated in the other flat plate portion 6 of the L-shaped bracket 7. Has been. These long holes 21, 22, 23, and 24 are formed in an oval hole shape in which each width is slightly larger than the width of the screw portion 14 of the bolt 8. Here, the longitudinal direction of each of the pair of long holes 21 and 22 and the long holes 23 and 24 is formed in a direction orthogonal to the longitudinal direction of the square steel pipes 2 and 3.
[0028]
Therefore, the long holes 21 and 22 drilled on one flat plate portion 5 of the L-shaped metal fitting 7 are in the radial direction of the screw portion 14 of the bolt 8 inserted through the screw mounting hole 10 of one square steel pipe 2. Movement (sliding) is restricted between the screw movable hole 19 and one screw positioning hole 15 or between the screw movable hole 19 and the other screw positioning hole 16.
[0029]
Further, the long holes 23 and 24 drilled in the other flat plate portion 6 of the L-shaped metal fitting 7 are formed in the radial direction of the screw portion 14 of the bolt 8 inserted through the screw mounting hole 12 of the other square steel pipe 3. The movement (slide) is restricted between the screw movable hole 20 and one screw positioning hole 17 or between the screw movable hole 20 and the other screw positioning hole 18.
[0030]
Here, the screw mounting holes 10, 12 are so-called substantially flush (one and the same surface) with one end face 25 in the longitudinal direction of the square steel pipe 2 and the side face (back face) 26 on the back side of the side face 13 of the square steel pipe 3. ) Are provided at one end of the side surfaces 11 and 13 of the square steel pipes 2 and 3, respectively.
[0031]
The plurality of bolts 8 include screw mounting holes 10 and 12 on the square steel pipes 2 and 3 and long holes 21, 22, 23 and 24 on the flat plate parts 5 and 6 of the L-shaped bracket 7. It is arranged so as to be inserted through each. Specifically, the plurality of bolts 8 are attached such that the individual screw portions 14 protrude outward from the inside of the square steel pipes 2 and 3 through the screw attachment holes 10 and 12.
[0032]
Further, the plurality of nuts 9 are screw portions 14 of the bolts 8 positioned in the screw positioning holes 15 and 16 of the screw mounting holes 10 and 12 on the square steel pipes 2 and 3 and the screw positioning holes 17 and 18, respectively. And screwed together. More specifically, the plurality of nuts 9 include outer edge portions of the screw positioning holes 15, 16, 17, 18 on the square steel pipes 2, 3, and long holes 21 on the flat plate portions 5, 6 of the L-shaped bracket 7, The outer edge portions 22, 23, and 24 are screwed into the screw portions 14 of the respective bolts 8 while being sandwiched between the head portions 27 of the plurality of bolts 8. That is, the square steel pipes 2 and 3 and the flat plate portions 5 and 6 of the L-shaped metal fitting 7 are fastened by the bolts 8 and the nuts 9, whereby the square steel pipes 2 and 3 are connected to be orthogonal to each other. .
[0033]
Here, the attachment position of the nut 9 will be described in detail. The nut 9 is attached from the side (outside of the square steel pipes 2 and 3) that contacts the flat plate parts 5 and 6 of the L-shaped metal fitting 7. In other words, in this configuration, the long holes and the nuts 9 on the flat plate portions 5 and 6 of the L-shaped bracket 7 can be easily aligned with the screw portion 14 of the bolt 8, and the connection work is performed efficiently. be able to.
[0034]
In the steel aggregate connection mechanism of the present embodiment configured as described above, for example, first, the screw movable hole portions 19 and 20 of the screw mounting holes 10 and 12 on the square steel pipes 2 and 3 and the flat plate portions of the L-shaped bracket 7. The threaded portions 14 of the respective bolts 8 are respectively inserted into the pair of long holes 21, 22, 23, 24 on the 5, 6. Next, each screw hole 14 of the bolt 8 is positioned in the screw positioning holes 15, 16, 17, 18 of the screw mounting holes 10, 12. The bolt 8 is slid from the center part on the side surfaces 11 and 13 in the short direction of the square steel pipes 2 and 3 to the edge side (in the directions of arrows Y1 and Y2 in FIG. 3). Further, the nuts 9 are screwed into the screw portions 14 of the respective bolts 8 positioned, whereby the square steel pipes 2 and 3 and the L-shaped metal fitting 7 are fastened. Thereby, in the connection mechanism of the steel frame material of this embodiment, the square steel pipes 2 and 3 can be connected through the L-shaped metal fitting 7 so as to be orthogonal to each other.
[0035]
Therefore, in the connection mechanism of the steel frame material of this embodiment, it is possible to easily perform the attachment of these members including the positioning of each component member such as the bolt insertion operation and the positioning operation into each hole. Can be made more efficient.
[0036]
Further, in the steel aggregate connection structure of this embodiment, a pair of screw mounting holes 10 and 12 having screw positioning holes and screw movable holes drilled in the square steel pipes 2 and 3 and a pair of flat plate parts 5 and 6 respectively. The mechanism which connects the square steel pipes 2 and 3 with the simple structure which consists of the L-shaped metal fitting 7 by which this long hole was pierced, and the volt | bolt 8 and nut 9 which fasten these can be constructed | assembled.
[0037]
Furthermore, in the steel frame connection mechanism of the present embodiment, a pair of screw positioning holes respectively drilled in the square steel pipes 2 and 3 and a peripheral portion of a pair of long holes drilled in each flat plate portion of the L-shaped metal fitting. Since it is fastened by two sets of bolts and nuts, the fastening portion of the connection mechanism is composed of a pair of fastening parts. Thereby, according to the connection mechanism of this embodiment, the connection force of the twist direction (for example, direction where a volt | bolt loosens) of the square steel pipes 2 and 3 can be raised, and the connection strength as the whole structure can be improved. Can do.
[0038]
Although the present invention has been specifically described by the above embodiment, the present invention is not limited to this embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the bolts 8 and nuts 9 may be attached in the reverse arrangement of the above embodiment. That is, a plurality of bolts 8 are inserted through the screw mounting holes 10 and 12 so as to protrude from the outside to the inside of the square steel pipes 2 and 3, and the nut 9 is brought into contact with the inner side surfaces of the square steel pipes 2 and 3. You may make it attach from the side (each back side surface of the side surfaces 11 and 13).
[0039]
Moreover, in the said embodiment, each flat plate of the L-shaped metal fitting 7 is made so that a pair of long holes 21, 22, 23, and 24 may orthogonally cross its longitudinal direction with respect to the longitudinal direction of the square steel pipes 2 and 3, respectively. Although the holes 5 and 6 are perforated, the long holes may be inclined and perforated with respect to the longitudinal direction of the square steel pipes 2 and 3 instead. In this case, it is desirable to appropriately change the shape and position of the screw mounting holes 10 and 12 having the screw positioning hole portion and the screw movable hole portion so as to correspond to the direction and position of the long holes.
[0040]
Considering the case where extraneous vibrations are applied to the coupling mechanism of the present embodiment due to the occurrence of an earthquake or the like, for example, the long holes 21, 22, 23 on the flat plate portions 5, 6 of the L-shaped bracket 7 are provided. For example, a spring washer or the like may be interposed as a buffer member between the peripheral portion of 24 and each nut 9.
[0041]
Moreover, in the said embodiment, although it was the mechanism which connects square steel pipes, it may replace with this and you may make it connect one square steel pipe to another kind of steel frame material. For example, FIG. 4 shows an example of a mechanism for connecting the square steel pipe 2 and the lip groove steel 35. This coupling mechanism is configured, for example, such that the upper side of the lip groove steel 35 (the back side facing the lip groove forming surface) faces the other flat plate portion 6 of the L-shaped metal fitting 32. Specifically, as shown in FIG. 4, this coupling mechanism applies an L-shaped bracket 32 in which a single screw insertion hole 31 is formed in the central portion of the other flat plate portion 6, and this screw insertion hole. 31 is realized by applying a lip groove steel 35 having a corresponding screw insertion hole 33 formed on the back surface 34 facing the lip groove forming surface.
[0042]
【The invention's effect】
As described above, according to the steel aggregate connection mechanism of the present invention, it is possible to connect the square steel pipes or between the square steel pipe and other types of steel aggregates with a relatively simple configuration, and to perform the connection work. Efficiency can be achieved, and high connection strength can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a connecting mechanism of steel aggregates according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a mechanism for connecting square steel pipes to each other, to which the steel frame connection mechanism of FIG. 1 is applied.
3 is an exploded perspective view of the coupling mechanism shown in FIG. 2. FIG.
4 is an exploded perspective view showing another coupling mechanism having a structure different from that of the mechanism of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Steel frame connection mechanism, 2, 3 ... Square steel pipe, 5, 6 ... Flat plate part of L-shaped metal fitting, 7, 32 ... L-shaped metal fitting, 8 ... Bolt, 9 ... Nut, 10, 12 ... Screw mounting hole, DESCRIPTION OF SYMBOLS 11, 13 ... Side surface of a square steel pipe, 14 ... Screw part of a bolt, 15, 16, 17, 18 ... Screw positioning hole part, 19, 20 ... Screw movable hole part, 21, 22, 23, 24 ... Long hole, 35 ... lip channel steel.

Claims

A pair of screw positioning holes that restrain the radial movement of the inserted screw and a screw movable hole that is provided between the screw positioning holes and releases the screw restraint are integrated as a screw mounting hole. A square steel pipe perforated on the side,
One of the flat plate portions orthogonal to the other flat plate portion is disposed so as to face the screw mounting hole on the rectangular steel pipe, and the screw that is inserted through the screw mounting hole is moved in the radial direction. An L-shaped bracket in which a pair of elongated holes that are respectively regulated between the movable hole portion and one or the other screw positioning hole portion are formed on the one flat plate portion;
A pair of bolts through which the screw portions respectively pass through the screw mounting holes on the square steel pipe and the pair of long holes on the one flat plate portion of the L-shaped bracket;
A steel frame connecting mechanism, comprising: a pair of nuts respectively screwed with screw portions of bolts respectively positioned in the screw positioning holes of the screw mounting holes.

The pair of long holes are perforated in the one flat plate portion on the L-shaped metal fitting so that the longitudinal direction of the square steel pipe and the longitudinal direction of the pair of long holes are orthogonal to each other. The steel frame connection mechanism according to claim 1.

3. The steel frame connection structure according to claim 1, wherein the pair of nuts are respectively screwed with threaded portions of the pair of bolts at positions where the nut comes into contact with the one flat plate portion of the L-shaped bracket. .