JP3546402B2

JP3546402B2 - Joint structure of two cores in frame

Info

Publication number: JP3546402B2
Application number: JP36243699A
Authority: JP
Inventors: 春水長尾
Original assignee: 株式会社長尾木鋼
Priority date: 1999-12-21
Filing date: 1999-12-21
Publication date: 2004-07-28
Anticipated expiration: 2019-12-21
Also published as: JP2001173324A

Description

【０００１】
【発明の属する技術分野】
この発明は、枠体の２芯材の接合方法に関し、さらに詳しくは、芯材を接合して構成された枠体の両面に化粧板を張り合せたフラッシュドアやフラッシュドアに隣接して設置される衝立壁等、あるいはそれに類した壁体等における枠体における２芯材の接合構造及び芯材の製造方法に関する。
【０００２】
【従来の技術】
近年、アルミサッシによる建造物（壁体や扉等）が頻繁に使用されるようになりその需要が増加傾向にある。特に、角パイプ状の芯材を接合して構成された枠体の両面に、化粧板を張り合せて形成されたフラッシュドアあるいはフラッシュドアとセットで配置される衝立壁は、軽量で移動できるため、各事務所等で使用されている。
【０００３】
従来、このフラッシュドアあるいは衝立壁を製造する場合、縦芯材と横芯材とを接合して枠体を構成する際に、縦芯材と横芯材との接合は、ビス止めによって行なわれていた。しかし、フラッシュドアや衝立壁は該枠体の両面に化粧板を張り付けるため、縦芯材と横芯材との前後面とは、接合した後に略同一平面に形成されていなければならない。つまり、化粧板を張り付けたときに、縦芯材と横芯材との前後面が同一平面上にないと、化粧板を張り付けることができなかったり、また無理に張り付けても隙間が生じたりしてその価値が下がるので、縦芯材と横芯材を接合したときの枠体の組立精度は高くなければならなかった。
【０００４】
縦芯材と横芯材とをビス止めで固着する場合、ビスとビス孔には比較的大きな隙間（遊び）があり、精度の高い位置決めは望むことができず、さらに、ビスを締め付けることによる偏加重が縦芯材あるいは横芯材にかかるため、捻じれや位置ずれを起こしやすかった。そのため、縦芯材の側面と横芯材の側面を同一平面上で組み付けることは、手間がかかり作業性を低下させていた。しかも、ビスの締め付けるだけの接合では、組み付けた枠体の強度は高くなく、ビスの緩みのために強度が低下して枠体を変形させることもあった。
【０００５】
また、ビスの孔加工を行なうには、孔明け工具を使用して、孔明けやタップ加工を行なうため、バリが残りやすく縦芯材や横芯材を傷つけ、それによって化粧板まで損傷させてしまうおそれがあった。
【０００６】
また、縦芯材と横芯材とをそれぞれの接合面の周りを溶接で固着する場合、通常、縦芯材と横芯材とは角パイプで形成されているため、溶接材がそれぞれの角パイプの外面に盛り上がることになり、盛り上がった分を削り取らなければならなかった。そのために、縦芯材や横芯材に傷をつけたり、手間をかけたりしていた。
【０００７】
この課題を解決するために、本出願人は、特開平１１−２３９８７３号において、２芯材を押し出し成形で加工してコストを低減させ、２芯材を溶接して接合することによって、組み付け時の作業性を向上させて、しかも堅固で組み付け精度の高い２芯材の接合方法を提案している。
【０００８】
【発明が解決しようとする課題】
しかし、上記の公報に記載されたものは、２芯材を溶接する際に、一方の芯材の接合爪と他方の芯材の本体側面に形成された溝底面とを溶接するように構成されていた。しかし、この２芯材を溶接で接合する場合、例え、第１の芯材と第２の芯材を嵌め込んで組み付けしたとしても、溶接される部位は、お互いの芯材の接合端面部にしか溶接することができなかったため、溶接作業に多くの時間を必要としていた。
【０００９】
第１の芯材と第２の芯材との溶接時間を短縮しようとすれば、第２の芯材の溝底面の第１の芯材の接合爪との接合部辺りに、溶接できる新たな孔を明けて、接合爪と溝底面とを直接溶接しなければならなかった。この溶接用の孔を明けるためには、溝底面に対して直交する方向からドリルを差し込んで行なうことになり、加工工程を増やして生産性を低下させるとともに、ドリル加工での孔明け作業は、手作業で行なうことが多く作業性を低下させていた。しかも、ドリル加工で作業する際に、芯材に傷をつけやすかった。
【００１０】
この発明は、上述の課題を解決するものであり、２芯材を正確に位置決めして接合することによって組み付け作業を容易化し、しかも、２芯材を固着するために一方の芯材と他方の芯材とを直接溶着し、その作業時間を短縮して生産性を向上できる枠体における２芯材の接合構造及び芯材の製造方法を提供することを目的とする。
【００１１】
【課題を解決するための手段】
この発明にかかわる枠体の２芯材の接合構造では、上記の課題を壊滅するために、以下のように構成するものである。即ち
略直交する方向または斜交する方向に配設される第１の芯材と第２の芯材とを接合して枠体を構成するために、
前記第１の芯材には、前記第２の芯材に向かって突出する接合爪が前記第１の芯材の軸心方向に沿って形成され、
前記第２の芯材には、前記接合爪を嵌め込むために前記第１の芯材と対向する面から前記第２の芯材の軸心方向に向かって配設される係合溝と、前記接合爪の側面に係合するために前記接合爪の側面に対向するように配設される接合面と、前記接合面の前記接合爪との接合部辺りで開口される溶着窓と、が形成され、
前記第１の芯材の接合爪が前記第２の芯材の係合溝及び接合面に係合された状態で、前記第１の芯材の接合爪と前記第２の芯材の接合面とが、前記溶着窓から溶着され、
前記第２の芯材の接合面が、前記第２の芯材の軸心方向外周壁より内部に配設される内壁の内部周壁面であるとともに、
前記第２の芯材の内壁には、前記内壁より内方に突起する内方突起部が、前記第２の芯材の軸心方向に沿って形成され、前記第２の芯材の端面から前記内方突起部の端部を削り取るように加工することによって、前記係合溝及び前記接合面及び前記溶着窓が、同時に形成されることを特徴とするものである。
【００１４】
また、この発明にかかわる枠体における芯材の製造方法では、略直交する方向または斜交する方向に配設される第１の芯材と第２の芯材とを接合して枠体を構成するために、
前記第１の芯材には、前記第２の芯材に向かって突出する接合爪が前記第１の芯材の軸心方向に沿って形成され、
前記第２の芯材には、前記接合爪を嵌め込むために前記第１の芯材と対向する面から前記第２の芯材の軸心方向に向かって配設される係合溝と、前記接合爪の側面に係合するために前記接合爪の側面に対向するように配設される接合面と、前記接合面の前記接合爪との接合部辺りで開口される溶着窓と、が形成される枠体における芯材の製造方法であって、
前記第２の芯材の接合面が、前記第２の芯材の軸心方向外周壁より内部に配設される内壁の内部周壁面であるとともに、
前記第２の芯材の内壁には、前記接合面より内方に突起する内方突起部が、前記第２の芯材の軸心方向に沿って形成され、
前記第２の芯材の端部から軸心方向に向かって、前記内方突起部の端部を削り取るように加工することによって、前記係合溝および前記接合面及び前記溶着窓が、同時に形成されることを特徴とするものである。
【００１５】
【発明の実施の形態】
以下、この発明の一実施の形態を図面に基づいて説明する。
【００１６】
本形態の枠体における２芯材の接合構造の説明では、主に、フラッシュドアの縦芯材と横芯材を接合する構造について述べるものであるが、特に限定するものではなく、フラッシュドアとセットで使用する衝立壁、あるいはより大きな構造体にも適用できるものである。
【００１７】
フラッシュドアＤは、例えば、図１〜２に示すように、外枠体２と内枠体３とで構成される枠体１と、枠体１内に挿入されるガラス窓５と、枠体１の両側から枠体１を挟むように張り付けられる化粧板７と、を有して構成されている。外枠体２は、図３に示すように、縦芯材１０の側面端部と横芯材２０の軸心方向の両端面とを接合して形成され、内枠体３は、後述の中間縦芯材と中間横芯材とを接合して形成されている。
【００１８】
外枠体２を構成する縦芯材１０は、図３及び図４に示すように、アルミニウム製あるいはスチール製の角パイプ状に押し出し成形で長尺状に形成され、四角形で形成されたパイプ本体１１と、パイプ本体１１の横芯材２０に対向する側面から横芯材２０側に向かって突出する２本の接合爪１３と、を有している。各接合爪１３は板状でパイプ本体１１の軸心方向に沿って全域にわたって形成されている。
【００１９】
外枠体２を構成する横芯材２０は、図３及び図５〜８に示すように、アルミニウム製あるいはスチール製の角パイプ状に押し出し成形で形成され、略四角状のパイプ本体２１と、パイプ本体２１の両側面を内方に向かって凹状に形成する凹状溝（内壁）２３とを有している。凹状溝２３はパイプ本体２１の軸心方向に沿って全域にわたって形成されている。
【００２０】
さらに、横芯材２０には、縦芯材１０と対向する端部に前述の縦芯材１０の接合爪１３を嵌め込むための係合溝２５が２本蟻溝状に形成され、凹状溝２３の縦芯材１０と対向する端部に、端面から四角形の溶接窓２７が係合溝２５とほぼ同一長さで形成されている。
【００２１】
凹状溝２３の内周壁面２３ａには、凹状溝２３の内周壁面２３ａよりないほうに突起する内方突起部２９が、横芯材２０の軸心方向に沿って形成されている。内方突起部２９の軸心方向の両端部は、係合溝２５の加工時に同時に加工される接合面２４が形成される（詳細は、後述の製造方法で説明する）ことになる。この接合面２４は、凹状溝２３の内周壁面２３ａと一致することもあり、また、内周壁面２３ａより僅かに切り込まれた位置で形成されることもある。なお、内方突起部２９の外側底面２９ａは、凹状溝２３の内周壁面２３ａとほぼ一致するか、あるいは内周壁面２３ａより内方に突起するように形成することが望ましい。
【００２２】
係合溝２５の外側面２５ａは、凹状溝２３の接合面２４（または内周壁面２３ａ）とほぼ同一平面上にあり、縦芯材１０の接合爪１３が係合溝２５に嵌め込まれたときに、接合爪１３の外側面が凹状溝２３の接合面２４（または内周壁面２３ａ）に当接する位置になる。
【００２３】
なお、横芯材２０に形成される係合溝２５と溶接窓２７は横芯材２０の両端部に形成されて、それぞれ縦芯材１０に接合される。
【００２４】
この横芯材２０の製造方法は、まず、凹状溝２３を含むパイプ本体２１を押し出し成形で加工する。図５〜６に示すように押し出し成形された状態では、凹状溝２３の内周壁面２３ａに形成される内方突起部２９は凹状溝２３の全域にわたって形成されている。
【００２５】
次に、押し出し成形されたパイプ本体２１の両端から、パイプ本体２１の軸心方向に沿って、厚みが、縦芯材１０の接合爪１３の幅とほぼ同一寸法の刃具で切込を入れる。この際、刃具を、内方突起部２９の底面２９ａを削り取るような位置にセットし、パイプ本体２１の上面２１ａと下面２１ｂとを同時に所定寸法（縦芯材１０の接合爪１３の長さ以上）まで切り込むと、図７〜８に示すように、パイプ本体２１の上面２１ａと下面２１ｂには、縦芯材１０の接合爪１３を係合する係合溝２５が形成され、削り取られた内方突起部２９の跡は、凹状溝２３の開口部となって現われる。この開口部が溶接窓２７として形成される。また、溶接窓２７の周りの内周壁面には接合面２４が形成される。なお、この切り込み加工は、例えば、のこ盤やフライス盤等の機械で行えばよい。
【００２６】
従って、刃具によって削り取られた溶接窓２７の周りの接合面２４と、パイプ本体２１の上面及び下面の係合溝２５の外側面２５ａは、同時加工で行なわれるため、同一平面を形成することになる。そのため、縦芯材１０の接合爪１３を横芯材２０の係合溝２５に嵌め込むと、接合爪１３の側面は溶接窓２７の周りの接合面２４に当接することになる。
【００２７】
上記のように、係合溝２５と同時に溶接窓２７を形成すれば、その後において、ドリル等の工具で、凹状溝２３に直交する方向から、手間のかかる孔明け作業を行なう必要がなく、作業性を向上することができる。
【００２８】
上記のような縦芯材１０と横芯材２０で構成された外枠体２は、縦芯材１０の接合爪１３に、横芯材２０の端部に形成される係合溝２５を嵌め込んで組み付けると、正面視における前後面は、縦芯材１０及び横芯材２０共にほぼ同一平面上に形成される。しかも、縦芯材１０の接合爪１３の外側面は、横芯材２０の溶接窓２７を塞ぐとともに、前述のように接合面２４（凹状溝２３の内周壁面２３ａ）にほぼ当接する。この状態で、溶接窓２７から接合爪１３に向かって溶接作業を行なう。溶接作業によってその周辺が盛り上がることになっても凹状溝２３内に納まるため、溶接部を削り取る必要はない。
【００２９】
従って、このように接合された縦芯材１０と横芯材２０は、加工手順を効率よく行なえることと、接合面の面積が多く、また、縦芯材１０と横芯材２０との溶接面積も多いので堅固で組み付け精度の良い結合を行なうことができる。
【００３０】
内枠体３は、外枠体２の縦芯材１０に接合する中間横芯材、あるいは外枠体２の横芯材２０に接合する中間縦芯材、または、各中間横芯材や中間縦芯材に接合する各中間縦芯材や中間横芯材（または斜め芯材）で構成され、図９に示すようなフラッシュドアの場合では、それぞれの中間縦芯材と中間横芯材２０との形状が異なっている。
【００３１】
例えば、図９においては、外枠の縦芯材１０に接合する中間横芯材３１には、上下に中間縦芯材３２、３３が接合されている。この中間横芯材３１は、図１０（ａ）に示すような断面形状となっている。
【００３２】
つまり、コ字状に形成された２個の外壁３１１、３１１を向かい合うように配置して、その中間部に外壁３１１、３１１に直交するように、２個の内壁３１２、３１２を並設してそれぞれの外壁３１１，３１１に連接するように配置している。それぞれの内壁３１２、３１２には、前述の形態と同様な内方突起部３１３、３１３がそれぞれ向かい合うように形成され、それぞれの外壁３１１、３１１には外方に向かって並設する２個の接合爪３１４、３１４が形成されている。
【００３３】
それぞれの接合爪３１４、３１４の外面３１４ａ、３１４ａと、それぞれの内壁３１２、３１２の内部周壁面３１２ａ、３１２ａと、それぞれの内方突起部３１３、３１３の凹部底面３１３ａ、３１３ａとは、ほぼ同一平面にあるように形成されている。
【００３４】
そして、押し出し成形された中間横芯材３１の軸心方向の両端部は、図１０（ｂ）に示すように、前述の製造方法と同様に、後加工によって係合溝３１５、３１５と接合面３１６、３１６と溶接窓３１７、３１７が形成され、接合爪３１４、３１４の両端部には、係合溝３１５の加工とともに切欠部３１４ｂ、３１４ｂが形成されることになる。
【００３５】
外枠体２の縦芯材１０と中間横芯材３１との溶接は、中間横芯材３１の溶接窓３１７周辺だけでなく外壁３１１上面と縦芯材１０の接合爪１３及び外壁３１１の下面と縦芯材１０の接合爪１３を接合するように行なえば、さらに強固に結合することが可能となる。
【００３６】
また、中間横芯材３１の接合爪３１４、３１４を縦芯材１０の接合爪１３、１３より、外側あるいは内側に、接合爪１３の厚み分位置ずれした位置に形成すれば、上述の切欠き部３１４ｂ、３１４ｂは形成されず、中間横芯材３１の接合爪３１４と縦芯材１０の接合爪１３とは重なり合うことになる。この状態でお互いの接合爪どうしを溶接することもできる。
【００３７】
この中間横芯材３１に上方で接合する中間縦芯材３２は、中間縦芯材３２の中間部にさらに中間横芯材が接合しなければ、前述の横芯材２０の断面形状と同形状でも良く、図９のように、中間横芯材３６を接合すれば、中間縦芯材３２の断面形状は、図１１に示すように形成される。
【００３８】
中間縦芯材３２は、ほぼ四角形状のパイプ本体３２１に縦方向に沿って対向する面に凹状溝３２２、３２２が形成されている。中間縦芯材３２の中間横芯材３６と対向する面に、並設する２個の接合爪３２３、３２３が形成されている。さらに凹状溝３２２、３２２の内壁の内周壁面３２２ａ、３２２ａには、凹状溝３２２、３２２の内周壁面３２２ａ、３２２ａより内方に突起する底面３２４ａ、３２４ａを有する内方突起部３２４，３２４が、中間縦芯材３２の軸心方向に沿って形成されている。
【００３９】
そして、前述と同様に、押し出し成形された中間縦芯材３２の両端部に係合溝を形成するための後加工を行なうことによって、係合溝、接合面、溶接窓及び接合爪の切欠部が、同時加工で中間縦芯材３２の両端部に形成される。
【００４０】
中間横芯材３１の下面側に接合する中間縦芯材３３には、中間部に中間横芯材が接合されないため、前述の図３に示すような横芯材２０と同様な断面形状及び端面形状のものが使用されている。
【００４１】
中間縦芯材３２の他方の端面側に接合する中間横芯材３４（及び中間縦芯材３３の他方の端面側に接合する中間横芯材３５）は、例えば、図１２のような断面形状に形成され、お互いに接合爪を内方に向けて対向するように取り付けられている。
【００４２】
つまり、大径部３４２（３５２）と内壁を形成する小径部３４３（３５３）とを有する段付のパイプ本体３４１（３５１）の小径部３４３（３５３）側の端面には、コ字形の外壁３４４（３５４）が内側に向かって一体的に形成され、小径部３４３（３５３）の中央部には両壁から内方に突出する凹状突起部３４５、３４５（３５５、３５５）が形成されている。さらに、大径部３４２（３５２）側の端面には２本の接合爪３４６、３４６（３５６、３５６）が外方に突出するように形成されている。
【００４３】
大径部３４２（３５２）とコ字形の外壁３４４（３５４）との外径は、ほぼ同一寸法に形成され、凹状突起部３４５、３４５（３５５、３５５）と接合爪３４６、３４６（３５６、３５６）とは、ほぼ同一幅に形成されている。
【００４４】
そして、この中間横芯材３４（３５）においても、押し出し成形後に両端部を後加工して、係合溝、接合面、溶接窓が形成される。
【００４５】
中間縦芯材３２と外枠体２の縦芯材１０とに接合する中間横芯材３６には、中間部に中間縦芯材が接合されないため、中間縦芯材３３と同様の形状でもよく、また例えば、図１３に示すような形状でもよい。この形態では、２個の角パイプ間３６２、３６２に段付の内壁３６３、３６３が一体的に形成されたパイプ本体３６１は、中間部を３室に分割している。そして、内壁３６３、３６３の小径部が内方突起部３６４、３６４として形成されている。従って、押し出し成形されたパイプ本体３６１は、後加工によって、パイプ本体３６１の両端部に上述の形態と同様の係合溝、接合面及び溶接窓が同時に形成されることになる。
【００４６】
外枠体２の縦芯材１０と中間横芯材３１とを、斜め方向に配置して両端で接合する斜め芯材３７は、図１４に示すように、断面形状が横芯材１０（図５参照）と同様なものが使用されている。つまり、凹状溝３７２、内方突起部３７３が形成されたパイプ本体３７１を押し出し成形によって加工した後、両端部に後加工を行なって係合溝３７４、接合面３７５、溶接窓３７６を形成し、その後、両端部に所定の角度で傾斜面３７７を形成する。
【００４７】
上記のように、内枠体３の一形態は、各断面形状を有する各中間縦芯材及び各中間横芯材を接合して構成されている。それぞれの中間縦芯材や中間横芯材は、図９に示すように配置するものでなくても、中間部に接合される中間縦芯材や中間横芯材の配置状態によって、適宜、その断面形状を選択すればよい。
【００４８】
また、フラッシュドアＤに、ガラス窓がないものでも適用できることはもちろんである。
【００４９】
また、中間芯材の断面形状は上記に限らず、例えば、図１５に示すものであってもよい。この中間芯材３８は、パイプ本体３８１の凹状溝３８２の内周壁面に形成される内方突起部３８３、３８３の他に、パイプ本体３８１から外方に突出する接合爪３８５、３８５にも、それぞれ内方に突出する内方突起部３８６、３８６が形成されている。この中間芯材３８は、中間芯材３８の接合爪３８５，３８５の内壁面に中間縦芯材あるいは中間横芯材の接合爪を重ね合わせて接合するものに好適である。中間芯材３８の内方突起部３８６、３８６の両端部を切削して溶接窓を形成した後、接合される中間縦芯材あるいは中間横芯材の接合爪を重ね合わせた後、溶接窓から溶接すれば、さらに強固に接合できる。
【００５０】
また、図１６に示すように、パイプ本体３９１に形成する接合爪３９５を、パイプ本体３８１の外周壁面の延長線上に形成するようにしてもよい。さらに接合爪は２本に限らず１本でもよく、３本以上でもよい。
【００５１】
【発明の効果】
上記のように、本発明によれば、枠体における２芯材の接合構造は、第１の芯材が第２の芯材に向かって突出する接合爪を有し、第２の芯材が第１の芯材の接合爪を嵌め込むための係合溝と、前記接合爪の側面に係合する接合面とを有し、さらに第２の芯材の端部に開口された溶着窓を有して、第１の芯材と第２の芯材とを溶着できるように構成されている。
【００５２】
第１の芯材と第２の芯材とは、第１の芯材の接合爪を第２の芯材の両端部に形成された係合溝に嵌め込むことによって、捩れて組み付けられることはなく、容易に、第１の芯材と第２の芯材との表面を同一面に形成することができる。また、枠体を構成するために第２の芯材の両側から第１の芯材を組み付ければ、組み付けた時点で、強固な接合を行なうことができる。しかも、第１の芯材と第２の芯材を組み付けた後に、第１の芯材の接合爪の外面と第２の芯材の接合面とを溶着窓から溶着によって固着するため、枠体は、極めて強固な接合で構成されることになる。
【００５３】
また、溶着作業を第２の芯材の両端部に開口された溶着窓から行なうことができるため、第１の芯材と第２の芯材とを係合させた後で、容易に溶着作業を行なうことができ作業性を向上することができる。
【００５４】
また、第２の芯材の接合面が、第２の芯材の外周壁面から内方に向かって形成された内壁の内部周壁面であれば、溶着窓の周りで溶着しても、溶着する際に形成される盛り上がり部分が外周壁面より外方に突出することがないため、削り取り処理を別途行なう必要がない。そのために、枠体を傷つけることなく、また、削り粉を枠体に付着させることもない。しかも削り取り処理作業を行なわないために作業性の向上につながる。
【００５５】
また、第２の芯材の両端部に形成する接合面及び溶着窓は、前記係合溝を加工すると同時に加工されるので、前記係合溝に嵌め込まれる第１の芯材の接合爪と、前記接合面とは同一平面上に形成される。従って、第２の芯材の係合溝に嵌め込まれた前記第１の芯材の接合爪は、第２の芯材の係合溝の外面と接合面との内周壁面に同時に当接することによって、第１の芯材と第２の芯材とは捩ることなく精度良く組み付けられる。しかも係合溝の加工と同時に溶着窓を加工できることは、溶着窓を、ドリル等の工具で新たに加工する工程を除くことができるので、無駄な作業を行なうことなく作業性を向上することが可能となる。
【００５６】
また、この発明にかかわる枠体における芯材の製造方法は、接合爪を有する第１の芯材に接合する第２の芯材の製造に関するものであり、内方突起部を有する第２の芯材は押し出し成形で形成され、その後、前記第２の芯材の両端部から、前記内方突起部を削り取るように加工することによって、前記係合溝と前記接合面及び前記溶着窓とを、同時に形成するようにしている。
【００５７】
従って、この芯材の製造方法によれば、第１の芯材と第２の芯材とをビス止めによる接合ではなく、お互いに嵌め合わせて接合するために、極めて容易に組み付け作業を行なえるとともに、組み付け後に、溶着窓から溶着作業を行なうことができ、作業性を向上できるとともに、極めて堅固に接合できる。
【００５８】
しかも、第２の芯材の接合面が、係合溝と同時に加工できるので、第１の芯材の接合爪は、第２の芯材の係合溝と接合面と同一平面上で接触することができ、組み付け精度を向上できる。さらに、溶着窓が同時加工で形成できるため、新たな後加工を施す必要がなく、作業性を向上して生産性を上げることができる。
【図面の簡単な説明】
【図１】フラッシュドアの一形態を示す簡略正面図
【図２】図１における一部平面図
【図３】本発明の一形態の縦芯材と横芯材との接合状態を示す一部拡大斜視図
【図４】同縦芯材を示す平面断面図
【図５】同押し出し成形直後の横芯材を示す断面図
【図６】同図５のVI矢視図
【図７】同係合溝形成後の横芯材を示す断面図
【図８】同図７のVIII矢視図
【図９】フラッシュドアの別の形態の枠体を示す正面図
【図１０】図９における中間横芯材３１を示す説明図
【図１１】同中間縦芯材３２を示す断面図
【図１２】同中間縦芯材３４（または３５）を示す断面図
【図１３】同中間横芯材３６を示す断面図
【図１４】同斜め芯材３７を示す一部斜視図
【図１５】同中間芯材の別の形態を示す断面図
【図１６】同中間芯材のさらに別の形態を示す断面図
【符号の説明】
Ｄ…フラッシュドア
１…枠体
２…外枠体
３…内枠体
１０…縦芯材（第１の芯材）
１３…接合爪
２０…横芯材（第２の芯材）
２３ａ…内周壁面
２４…接合面
２５…係合溝
２７…溶接窓（溶着窓）
２９…内方突起部 [0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of joining two core members of a frame, and more particularly, to a method of joining a core member to a flash door in which decorative plates are attached to both sides of a frame body and a flash door or a door adjacent to the flash door. The present invention relates to a joint structure of a two-core member in a frame body of a partition wall or the like or a similar wall body and a method of manufacturing a core member.
[0002]
[Prior art]
In recent years, buildings (walls, doors, and the like) made of aluminum sashes have been frequently used, and the demand for them has been increasing. In particular, a flash door formed by bonding a decorative panel to both sides of a frame body formed by joining square pipe-shaped core materials, or a partition wall arranged in a set with the flash door is lightweight and can be moved. , Used in each office.
[0003]
Conventionally, when manufacturing a flash door or a partition wall, when a vertical core material and a horizontal core material are joined to form a frame, the vertical core material and the horizontal core material are joined with screws. I was However, since the flash doors and the partition walls have decorative panels attached to both sides of the frame, the front and rear surfaces of the vertical core member and the horizontal core member must be formed on substantially the same plane after joining. In other words, if the front and rear surfaces of the vertical core material and the horizontal core material are not on the same plane when the decorative panel is attached, the decorative panel cannot be attached, or a gap may occur even if it is forcibly attached. Therefore, the assembly accuracy of the frame when the vertical core material and the horizontal core material are joined must be high.
[0004]
When fixing the vertical core material and the horizontal core material with screws, there is a relatively large gap (play) between the screw and the screw hole, and high-precision positioning cannot be expected. Since the partial load is applied to the vertical core material or the horizontal core material, twisting and displacement are likely to occur. Therefore, assembling the side surface of the vertical core member and the side surface of the horizontal core member on the same plane is troublesome and reduces workability. In addition, the strength of the assembled frame is not high when the screws are joined only by tightening, and the strength is reduced due to the loosening of the screws, and the frame may be deformed.
[0005]
In addition, in order to drill holes in screws, a drilling tool is used for drilling and tapping, so burrs are likely to remain and damage the vertical and horizontal cores, thereby damaging the decorative board. There was a risk.
[0006]
In addition, when the vertical core material and the horizontal core material are fixed to each other around the joint surface by welding, the vertical core material and the horizontal core material are usually formed of square pipes, so that the welding material is The swell was on the outside of the pipe, and the swell had to be cut off. For this reason, the vertical core material and the horizontal core material have been damaged or troublesome.
[0007]
In order to solve this problem, the applicant of the present invention disclosed in Japanese Patent Application Laid-Open No. H11-239873, the cost was reduced by extruding a two-core material by extrusion, and the two-core material was welded and joined. Has been proposed to improve the workability of the above-mentioned method, and furthermore, a method of joining a two-core material that is firm and has high assembling accuracy.
[0008]
[Problems to be solved by the invention]
However, what is described in the above-mentioned publication is configured such that, when welding two core materials, a joint claw of one core material and a groove bottom surface formed on a side surface of a body of the other core material are welded. I was However, when the two core members are joined by welding, even if the first core member and the second core member are fitted and assembled, the portions to be welded are located at the joint end surfaces of the respective core members. Since only welding was possible, much time was required for the welding operation.
[0009]
In order to reduce the welding time between the first core material and the second core material, a new welding that can be welded to the vicinity of the joint between the bottom surface of the groove of the second core material and the joining claw of the first core material is made. A hole had to be drilled and the joint claw and the groove bottom had to be directly welded. In order to drill this hole for welding, a drill must be inserted from a direction perpendicular to the bottom of the groove, which increases the number of processing steps and reduces productivity. It is often done manually, which reduces workability. Moreover, when working with drilling, it was easy to damage the core material.
[0010]
The present invention has been made to solve the above-mentioned problem, and facilitates the assembling work by accurately positioning and joining the two core members, and furthermore, one core member and the other core member for fixing the two core members. An object of the present invention is to provide a joint structure of two core members in a frame body capable of directly welding the core member, shortening the operation time and improving productivity, and a method of manufacturing the core member.
[0011]
[Means for Solving the Problems]
The joint structure of the two-core member of the frame according to the present invention has the following configuration in order to eliminate the above-mentioned problem. That is, in order to form a frame by joining a first core material and a second core material arranged in a direction substantially orthogonal to or oblique to the first core material,
A joining claw projecting toward the second core is formed on the first core along an axial direction of the first core.
An engagement groove provided in the second core member from an opposite surface to the first core member in an axial direction of the second core member to fit the joining claw; A joining surface arranged to face the side surface of the joining claw to engage with the side surface of the joining claw, and a welding window opened around a joining portion of the joining surface with the joining claw, Formed,
The joint surface of the first core material and the joint surface of the second core material in a state where the joint claws of the first core material are engaged with the engagement grooves and the joint surface of the second core material. Are welded from the welding window,
The joining surface of the second core is an inner peripheral wall of an inner wall disposed inside the outer peripheral wall in the axial direction of the second core,
On the inner wall of the second core, an inwardly protruding portion projecting inward from the inner wall is formed along the axial direction of the second core, and the inner projection is formed from an end face of the second core. The engagement groove, the joining surface, and the welding window are formed at the same time by processing so as to cut off the end of the inward projection.
[0014]
In the method for manufacturing a core material in a frame according to the present invention, the first core and the second core provided in a direction substantially orthogonal to or oblique to each other are joined to form the frame. To do
A joining claw projecting toward the second core is formed on the first core along an axial direction of the first core.
An engagement groove provided in the second core member from an opposite surface to the first core member in an axial direction of the second core member to fit the joining claw; A joining surface arranged to face the side surface of the joining claw to engage with the side surface of the joining claw, and a welding window opened around a joining portion of the joining surface with the joining claw, A method for manufacturing a core material in a frame to be formed,
The joining surface of the second core is an inner peripheral wall of an inner wall disposed inside the outer peripheral wall in the axial direction of the second core,
On the inner wall of the second core, an inward projection projecting inward from the joint surface is formed along an axial direction of the second core.
The engagement groove, the joint surface, and the welding window are simultaneously formed by processing the end of the inward protrusion to be cut away from the end of the second core material in the axial direction. It is characterized by being performed.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0016]
In the description of the joint structure of the two-core material in the frame of the present embodiment, a structure in which the vertical core material and the horizontal core material of the flash door are joined is mainly described. It can be applied to a partition wall used in a set or a larger structure.
[0017]
The flash door D includes, for example, a frame 1 composed of an outer frame 2 and an inner frame 3, a glass window 5 inserted into the frame 1, and a frame, as shown in FIGS. 1 and a decorative plate 7 attached to both sides of the frame 1 so as to sandwich the frame 1 therebetween. As shown in FIG. 3, the outer frame 2 is formed by joining the side end portions of the vertical core member 10 and both end surfaces of the horizontal core member 20 in the axial direction. It is formed by joining a vertical core material and an intermediate horizontal core material.
[0018]
As shown in FIGS. 3 and 4, the vertical core member 10 constituting the outer frame body 2 is formed in a rectangular shape by extruding into a square pipe made of aluminum or steel, and is formed in a long shape. 11 and two joining claws 13 projecting from the side of the pipe body 11 facing the horizontal core 20 toward the horizontal core 20. Each joining claw 13 is plate-shaped and formed over the entire area along the axial direction of the pipe body 11.
[0019]
As shown in FIGS. 3 and 5 to 8, the horizontal core member 20 forming the outer frame body 2 is formed by extrusion into a square pipe made of aluminum or steel, and has a substantially square pipe main body 21. It has a concave groove (inner wall) 23 for forming both side surfaces of the pipe main body 21 in a concave shape toward the inside. The concave groove 23 is formed over the entire area along the axial direction of the pipe body 21.
[0020]
Further, the horizontal core member 20 has two dovetail-shaped engagement grooves 25 for fitting the joining claws 13 of the vertical core member 10 at an end facing the vertical core member 10, and has a concave groove. A rectangular welding window 27 is formed at an end portion of the 23 facing the vertical core member 10 from the end surface so as to have substantially the same length as the engaging groove 25.
[0021]
On the inner peripheral wall surface 23 a of the concave groove 23, an inward projection 29 is formed along the axial direction of the horizontal core member 20, which protrudes from the inner peripheral wall surface 23 a of the concave groove 23. At both ends in the axial direction of the inwardly projecting portion 29, a joint surface 24 that is simultaneously processed when the engaging groove 25 is processed is formed (details will be described later in a manufacturing method). The joining surface 24 may coincide with the inner peripheral wall surface 23a of the concave groove 23, or may be formed at a position slightly cut from the inner peripheral wall surface 23a. It is desirable that the outer bottom surface 29a of the inner projection 29 be formed so as to substantially coincide with the inner peripheral wall surface 23a of the concave groove 23 or to project inward from the inner peripheral wall surface 23a.
[0022]
The outer surface 25a of the engagement groove 25 is substantially flush with the joint surface 24 (or the inner peripheral wall surface 23a) of the concave groove 23, and when the joint claw 13 of the vertical core member 10 is fitted into the engagement groove 25. Then, the outer surface of the joining claw 13 comes to a position where it comes into contact with the joining surface 24 (or the inner peripheral wall surface 23a) of the concave groove 23.
[0023]
The engagement groove 25 and the welding window 27 formed in the horizontal core 20 are formed at both ends of the horizontal core 20, and are respectively joined to the vertical core 10.
[0024]
In the method of manufacturing the horizontal core member 20, first, the pipe body 21 including the concave groove 23 is processed by extrusion. As shown in FIGS. 5 and 6, in an extruded state, the inward projection 29 formed on the inner peripheral wall surface 23 a of the concave groove 23 is formed over the entire area of the concave groove 23.
[0025]
Next, cuts are made from both ends of the extruded pipe body 21 along the axial direction of the pipe body 21 with a cutting tool having a thickness substantially equal to the width of the joining claw 13 of the vertical core member 10. At this time, the cutting tool is set at a position where the bottom surface 29a of the inward projection 29 is scraped off, and the upper surface 21a and the lower surface 21b of the pipe main body 21 are simultaneously set to a predetermined size (not less than the length of the joining claw 13 of the vertical core member 10). 7), an engagement groove 25 is formed in the upper surface 21a and the lower surface 21b of the pipe main body 21 to engage the joining claw 13 of the vertical core member 10, and the cut-out portion is formed as shown in FIGS . The trace of the projection 29 appears as an opening of the concave groove 23. This opening is formed as a welding window 27. A joining surface 24 is formed on the inner peripheral wall surface around the welding window 27. The cutting may be performed by a machine such as a sawing machine or a milling machine.
[0026]
Therefore, since the joint surface 24 around the welding window 27 cut off by the cutting tool and the outer surface 25a of the engagement groove 25 on the upper surface and the lower surface of the pipe main body 21 are simultaneously processed, the same plane is formed. Become. Therefore, when the joining claw 13 of the vertical core member 10 is fitted into the engagement groove 25 of the horizontal core member 20, the side surface of the joining claw 13 comes into contact with the joining surface 24 around the welding window 27.
[0027]
As described above, if the welding window 27 is formed at the same time as the engagement groove 25, it is not necessary to perform a laborious drilling operation from a direction orthogonal to the concave groove 23 with a tool such as a drill. Performance can be improved.
[0028]
The outer frame body 2 composed of the vertical core member 10 and the horizontal core member 20 as described above is fitted with the engagement groove 25 formed at the end of the horizontal core member 20 to the joining claw 13 of the vertical core member 10. When assembled, the front and rear surfaces in the front view are formed on substantially the same plane with both the vertical core member 10 and the horizontal core member 20. Moreover, the outer surface of the joining claw 13 of the vertical core member 10 closes the welding window 27 of the horizontal core member 20 and substantially abuts the joining surface 24 (the inner peripheral wall surface 23a of the concave groove 23) as described above. In this state, welding work is performed from the welding window 27 toward the joining claw 13. Even if the periphery thereof rises due to the welding operation, it is accommodated in the concave groove 23, so that it is not necessary to cut off the welded portion.
[0029]
Therefore, the vertical core member 10 and the horizontal core member 20 joined in this manner can perform the processing procedure efficiently, have a large joint surface area, and weld the vertical core member 10 and the horizontal core member 20. Since the area is large, it is possible to perform a firm connection with good assembling accuracy.
[0030]
The inner frame body 3 is an intermediate horizontal core material bonded to the vertical core material 10 of the outer frame body 2, an intermediate vertical core material bonded to the horizontal core material 20 of the outer frame body 2, or each intermediate horizontal core material or intermediate material. The flash door as shown in FIG. 9 is composed of each intermediate vertical core material and intermediate horizontal core material (or diagonal core material) to be joined to the vertical core material. And the shape is different.
[0031]
For example, in FIG. 9, intermediate vertical core members 32 and 33 are vertically bonded to an intermediate horizontal core member 31 bonded to the vertical core member 10 of the outer frame. This intermediate horizontal core member 31 has a cross-sectional shape as shown in FIG.
[0032]
That is, two outer walls 311 and 311 formed in a U-shape are arranged so as to face each other, and two inner walls 312 and 312 are juxtaposed at an intermediate portion thereof so as to be orthogonal to the outer walls 311 and 311. It arrange | positions so that it may connect with each outer wall 311 and 311. Inward protrusions 313, 313 similar to the above-described embodiment are formed on the inner walls 312, 312, respectively, so as to face each other. Claws 314, 314 are formed.
[0033]
The outer surfaces 314a, 314a of the respective joining claws 314, 314, the inner peripheral wall surfaces 312a, 312a of the respective inner walls 312, 312, and the concave bottom surfaces 313a, 313a of the respective inner projections 313, 313 are substantially flush with each other. Is formed.
[0034]
As shown in FIG. 10B, the opposite ends of the extruded intermediate horizontal core member 31 in the axial direction are formed with the engagement grooves 315 and 315 by post-processing in the same manner as in the above-described manufacturing method. 316, 316 and welding windows 317, 317 are formed, and notches 314b, 314b are formed at both ends of the joining claws 314, 314 along with the processing of the engaging groove 315.
[0035]
The welding between the vertical core member 10 of the outer frame body 2 and the intermediate horizontal core member 31 is performed not only in the vicinity of the welding window 317 of the intermediate horizontal core member 31, but also on the upper surface of the outer wall 311 and the joining claws 13 of the vertical core member 10 and the lower surface of the outer wall 311. If the joining is performed so that the joining claw 13 of the vertical core member 10 is joined to the joining member 13, the joining can be further firmly performed.
[0036]
Further, if the joining claws 314, 314 of the intermediate horizontal core member 31 are formed at positions shifted from the joining claws 13, 13 of the vertical core member 10 to the outside or inside by the thickness of the joining claw 13, the above-described notch can be obtained. The portions 314b and 314b are not formed, and the joining claws 314 of the intermediate horizontal core member 31 and the joining claws 13 of the vertical core member 10 overlap. In this state, the joining claws can be welded to each other.
[0037]
The intermediate vertical core member 32 joined to the intermediate horizontal core member 31 at the upper portion has the same shape as the cross-sectional shape of the horizontal core member 20 unless the intermediate horizontal core member is further joined to the intermediate portion of the intermediate vertical core member 32. Alternatively, if the intermediate horizontal core member 36 is joined as shown in FIG. 9, the cross-sectional shape of the intermediate vertical core member 32 is formed as shown in FIG.
[0038]
The intermediate vertical core member 32 has concave grooves 322 and 322 formed on a surface that faces the substantially square pipe main body 321 along the vertical direction. On the surface of the intermediate vertical core member 32 facing the intermediate horizontal core member 36, two joining claws 323 and 323 provided side by side are formed. Further, inner projections 324, 324 having bottom surfaces 324a, 324a projecting inward from the inner peripheral wall surfaces 322a, 322a of the concave grooves 322, 322 are formed on the inner peripheral wall surfaces 322a, 322a of the inner walls of the concave grooves 322, 322. , Are formed along the axial direction of the intermediate vertical core member 32.
[0039]
As described above, by performing post-processing for forming engagement grooves at both ends of the extruded intermediate vertical core member 32, the engagement grooves, the joint surfaces, the welding windows, and the notches of the joint claws are formed. Are formed at both ends of the intermediate vertical core member 32 by simultaneous processing.
[0040]
The intermediate vertical core member 33 joined to the lower surface side of the intermediate horizontal core member 31 has no cross-sectional shape and end face similar to the horizontal core member 20 shown in FIG. Shaped ones are used.
[0041]
The intermediate horizontal core 34 joined to the other end surface side of the intermediate vertical core 32 (and the intermediate horizontal core 35 joined to the other end surface of the intermediate vertical core 33) has, for example, a sectional shape as shown in FIG. And are attached so that the joining claws face each other with the joining claws facing inward.
[0042]
That is, the end surface of the stepped pipe body 341 (351) having the large-diameter portion 342 (352) and the small-diameter portion 343 (353) forming the inner wall is provided with a U-shaped outer wall 344 on the end surface on the small-diameter portion 343 (353) side. (354) are integrally formed toward the inside, and concave projections 345, 345 (355, 355) projecting inward from both walls are formed at the center of the small diameter portion 343 (353). Further, two joining claws 346, 346 (356, 356) are formed on the end surface on the side of the large diameter portion 342 (352) so as to protrude outward.
[0043]
The outer diameters of the large diameter portion 342 (352) and the U-shaped outer wall 344 (354) are formed to have substantially the same dimensions, and the concave protrusions 345, 345 (355, 355) and the joining claws 346, 346 (356, 356) are formed. ) Are formed with substantially the same width.
[0044]
Then, also in the intermediate horizontal core member 34 (35), both ends are post-processed after the extrusion molding, so that an engagement groove, a joint surface, and a welding window are formed.
[0045]
The intermediate vertical core member 36 joined to the intermediate vertical core member 32 and the vertical core member 10 of the outer frame 2 does not have the intermediate vertical core member joined to the intermediate portion, and therefore may have the same shape as the intermediate vertical core member 33. Alternatively, for example, the shape shown in FIG. In this embodiment, a pipe body 361 in which stepped inner walls 363, 363 are integrally formed between two square pipes 362, 362 divides an intermediate portion into three chambers. The small-diameter portions of the inner walls 363, 363 are formed as inner projections 364, 364. Therefore, in the extruded pipe main body 361, the same engagement groove, joint surface, and welding window as in the above-described embodiment are simultaneously formed at both ends of the pipe main body 361 by post-processing.
[0046]
As shown in FIG. 14, the cross-sectional shape of the oblique core material 37 in which the vertical core material 10 and the intermediate horizontal core material 31 of the outer frame 2 are arranged in an oblique direction and joined at both ends is shown in FIG. 5) is used. That is, after the pipe main body 371 on which the concave groove 372 and the inward protrusion 373 are formed is extruded and formed, post-processing is performed on both ends to form the engagement groove 374, the joint surface 375, and the welding window 376. Thereafter, inclined surfaces 377 are formed at both ends at a predetermined angle.
[0047]
As described above, one form of the inner frame 3 is formed by joining each intermediate vertical core material and each intermediate horizontal core material having each cross-sectional shape. Each intermediate vertical core material and intermediate horizontal core material may be appropriately arranged depending on the arrangement state of the intermediate vertical core material and intermediate horizontal core material to be joined to the intermediate portion, even if they are not arranged as shown in FIG. What is necessary is just to select a cross-sectional shape.
[0048]
Further, it is needless to say that the flash door D can be applied even if there is no glass window.
[0049]
Further, the cross-sectional shape of the intermediate core material is not limited to the above, and may be, for example, the shape shown in FIG. The intermediate core 38 is provided not only on the inner protrusions 383 and 383 formed on the inner peripheral wall surface of the concave groove 382 of the pipe body 381, but also on the joining claws 385 and 385 projecting outward from the pipe body 381. Inward projections 386 and 386 are formed to project inward, respectively. This intermediate core member 38 is suitable for joining by joining an intermediate vertical core member or an intermediate horizontal core member to the inner wall surfaces of the joint claws 385 and 385 of the intermediate core member 38. After cutting both ends of the inward protrusions 386 and 386 of the intermediate core member 38 to form a welding window, the joining claws of the intermediate vertical core member or the intermediate horizontal core member to be joined are overlapped, and then the welding window is formed. If it is welded, it can be joined even stronger.
[0050]
Further, as shown in FIG. 16, the joining claw 395 formed on the pipe body 391 may be formed on an extension of the outer peripheral wall surface of the pipe body 381. Furthermore, the number of joining claws is not limited to two, but may be one, or may be three or more.
[0051]
【The invention's effect】
As described above, according to the present invention, the joint structure of the two core members in the frame body has the joining claws in which the first core member projects toward the second core member, and the second core member has A welding window having an engagement groove for fitting the joining claw of the first core material and a joining surface engaging with a side surface of the joining claw, and further having an opening at an end of the second core material. And the first core member and the second core member can be welded.
[0052]
The first core member and the second core member are twisted and assembled by fitting the joining claws of the first core member into engagement grooves formed at both ends of the second core member. In addition, the surfaces of the first core material and the second core material can be easily formed on the same surface. In addition, if the first core material is assembled from both sides of the second core material to form the frame, strong joining can be performed at the time of assembly. In addition, after the first core material and the second core material are assembled, the outer surface of the first core material bonding claw and the second core material bonding surface are fixed by welding from the welding window. Will be composed of extremely strong joints.
[0053]
Further, since the welding operation can be performed from the welding windows opened at both ends of the second core material, the welding operation can be easily performed after the first core material and the second core material are engaged. Can be performed, and workability can be improved.
[0054]
Also, if the joining surface of the second core material is the inner peripheral wall surface of the inner wall formed inward from the outer peripheral wall surface of the second core material, the welding is performed even when welding is performed around the welding window. Since the raised portion formed at this time does not protrude outward from the outer peripheral wall surface, it is not necessary to separately perform a shaving process. Therefore, the frame is not damaged and shavings do not adhere to the frame. In addition, since no shaving processing operation is performed, workability is improved.
[0055]
Further, since the joining surfaces and the welding windows formed at both ends of the second core material are processed at the same time as the processing of the engagement groove, a joining claw of the first core material to be fitted into the engagement groove, The joint surface is formed on the same plane. Therefore, the joining claw of the first core material fitted into the engaging groove of the second core material simultaneously contacts the inner peripheral wall surface between the outer surface and the joining surface of the engaging groove of the second core material. Thereby, the first core material and the second core material can be accurately assembled without being twisted. Furthermore, the fact that the welding window can be processed simultaneously with the processing of the engagement groove can eliminate the step of newly processing the welding window with a tool such as a drill, thereby improving workability without performing unnecessary work. It becomes possible.
[0056]
Further, the method of manufacturing a core material in a frame according to the present invention relates to the manufacture of a second core material joined to a first core material having joining claws, and a second core having an inward projection. The material is formed by extrusion molding, and thereafter, from the both ends of the second core material, by processing so as to scrape the inward projection , the engagement groove and the joining surface and the welding window, They are formed at the same time.
[0057]
Therefore, according to this manufacturing method of the core material, the first core material and the second core material are not joined by screws but are fitted and joined to each other, so that the assembling work can be performed extremely easily. In addition, the welding operation can be performed from the welding window after the assembling, so that the workability can be improved and the connection can be made extremely firmly.
[0058]
In addition, since the joint surface of the second core member can be processed simultaneously with the engagement groove, the joint claw of the first core member comes into contact with the engagement groove of the second core member on the same plane as the joint surface. And assembling accuracy can be improved. Further, since the welding window can be formed by the simultaneous processing, it is not necessary to perform a new post-processing, and the workability can be improved and the productivity can be improved.
[Brief description of the drawings]
FIG. 1 is a simplified front view showing one embodiment of a flash door. FIG. 2 is a partial plan view in FIG. 1. FIG. 3 is a part showing a joined state of a vertical core member and a horizontal core member in one embodiment of the present invention. Enlarged perspective view FIG. 4 is a cross-sectional plan view showing the vertical core material. FIG. 5 is a cross-sectional view showing the horizontal core material immediately after extrusion molding. FIG. 6 is a view taken in the direction of arrow VI in FIG. FIG. 8 is a sectional view showing the horizontal core material after the formation of the mating groove. FIG. 8 is a view taken in the direction of arrow VIII in FIG. 7. FIG. 9 is a front view showing another form of the flash door frame. FIG. FIG. 11 is a cross-sectional view showing the intermediate vertical core material 32. FIG. 12 is a cross-sectional view showing the intermediate vertical core material 34 (or 35). FIG. 14 is a partial perspective view showing the oblique core material 37. FIG. 15 is a cross-sectional view showing another form of the intermediate core material. FIG. 16 is a cross-sectional view showing still another form of the intermediate core material. Figure [Description of the code]
D ... Flash door 1 ... Frame 2 ... Outer frame 3 ... Inner frame 10 ... Vertical core material (first core material)
13 ... joining claw 20 ... horizontal core material (second core material)
23a ... inner peripheral wall surface 24 ... joining surface 25 ... engagement groove 27 ... welding window (welding window)
29 ... Inward projection

Claims

In order to form a frame body by joining a first core material and a second core material arranged in a direction substantially orthogonal to or oblique to the first core material,
A joining claw projecting toward the second core is formed on the first core along an axial direction of the first core.
An engagement groove provided in the second core member from an opposite surface to the first core member in an axial direction of the second core member to fit the joining claw; A joining surface arranged to face the side surface of the joining claw to engage with the side surface of the joining claw, and a welding window opened around a joining portion of the joining surface with the joining claw, Formed,
The joint surface of the first core material and the joint surface of the second core material in a state where the joint claws of the first core material are engaged with the engagement grooves and the joint surface of the second core material. Are welded from the welding window,
The joining surface of the second core is an inner peripheral wall of an inner wall disposed inside the outer peripheral wall in the axial direction of the second core,
On the inner wall of the second core, an inwardly protruding portion projecting inward from the inner wall is formed along the axial direction of the second core, and the inner projection is formed from an end face of the second core. The joining structure of a two-core material in a frame, wherein the engagement groove, the joining surface, and the welding window are formed at the same time by processing so as to cut off the end of the inward projection.

In order to form a frame body by joining a first core material and a second core material arranged in a direction substantially orthogonal to or oblique to the first core material,
A joining claw projecting toward the second core is formed on the first core along an axial direction of the first core.
An engagement groove provided in the second core member from an opposite surface to the first core member in an axial direction of the second core member to fit the joining claw; A joining surface arranged to face the side surface of the joining claw to engage with the side surface of the joining claw, and a welding window opened around a joining portion of the joining surface with the joining claw, A method for manufacturing a core material in a frame to be formed,
The joining surface of the second core is an inner peripheral wall of an inner wall disposed inside the outer peripheral wall in the axial direction of the second core,
On the inner wall of the second core, an inward projection projecting inward from the joint surface is formed along an axial direction of the second core.
The engagement groove, the joining surface, and the welding window are simultaneously formed by processing the end of the inward protrusion from the end of the second core material in the axial direction. A method for producing a core material in a frame body.