JP3738016B2

JP3738016B2 - Frame member connection structure

Info

Publication number: JP3738016B2
Application number: JP2003139841A
Authority: JP
Inventors: 英人杉井; 優一郎新田
Original assignee: 株式会社ムラコシ精工
Priority date: 2003-05-19
Filing date: 2003-05-19
Publication date: 2006-01-25
Anticipated expiration: 2023-05-19
Also published as: JP2004339855A

Description

【０００１】
【発明が属する技術分野】
本発明は、家具や建具等に設けられる扉体の枠体を構成するフレーム部材について、それらの隣接するフレーム部材同士を接続する場合の接続構造に関する。
【０００２】
【従来の技術】
従来からのフレーム部材の接続構造としては、隣接するフレーム部材同士を連結部材を介して接続する構造のものが多用されている（例えば、特許文献１参照）。このような構造の代表例を、特許文献１に開示されたもので説明する（図６，７）。
この例では、扉体のフレーム部材として縦枠１００と横枠１０１とを接続する場合、当該縦枠１００と横枠１０１の内部に形成した長手方向の溝１００ａ，１０１ａに、図６に示す枠隅角部接続部材（連結部材）１０２の接続片１０３a，１０３ｂを挿入し、傾斜面板部１０２ａを図７のように両端面間に介在させる。そして、ねじ１０４を縦枠１００及び横枠１０１の外側からねじ込んで固定し、また、傾斜面板部１０２ａの先端部に形成した透孔１０２ｂにもねじ１０４をねじ込んで突き合わせ端部を確実に固定するようにしている。
【０００３】
【特許文献１】
特開平５−１４１１５４号公報（第２〜３頁、図１，３）
【０００４】
【発明が解決しようとする課題】
上記接続構造において、縦枠及び横枠の各溝への枠隅角部接続部材（連結部材）の接続片の挿入は、取付けを容易にする目的から緩やかになっており、したがって、上記接続構造は、縦枠及び横枠と連結部材との間のガタツキの発生が避けられない構造となっている。上記接続構造においては、この特許文献１中にも記載されているように縦枠及び横枠の突き合わせ端面に相対的な位置ずれが生ずることを前提として、かかる位置ずれによって生ずる不具合、即ち、安全性や外観的体裁の不良を防止するべく、縦枠及び横枠を直接当接させないで枠隅角部接続部材を介して当接させる一方、枠隅角部接続部材の最外端面に面取り部位（図６，７中の外面端部１０２ｃ）を設けて対応しているが、安全性の面からはともかく外観的体裁の面からは十分とは言い難い。
【０００５】
本発明の目的は、扉体のフレーム部材において、隣接するフレーム部材同士を直接当接させて接続する構造を採っても、フレーム部材間に生ずるガタツキを抑え、また、フレーム部材間に生ずる位置ずれを抑えることができるフレーム部材の接続構造を提供することにある。
【０００６】
【課題を解決するための手段】
上記課題を解決するために、本発明の請求項１に係るフレーム部材の接続構造は、第１フレーム部材の断面略口型をなす中空内に緩挿される第１連結片と、第２フレーム部材の断面略口型をなす中空内に緩挿される第２連結片とを有する連結部材を介して第１フレーム部材と第２フレーム部材とが直接当接する態様で接続されて扉体の枠体を構成するフレーム部材の接続構造のうちで、第１連結片及び第２連結片の、扉体の裏面側に位置する一方側面に、当該第１連結片及び第２連結片に跨る態様にして突起を設けるか、又は当該第１連結片及び第２連結片のそれぞれに独立して突起を設けるかする一方、第１フレーム部材及び第２フレーム部材の、前記第１連結片及び第２連結片の一方側面と同一側の一方側面にスリット溝をそれぞれ設け、連結部材の第１フレーム部材及び第２フレーム部材への緩挿に伴い上記突起が上記両スリット溝で形成される閉口溝孔、又は各スリット溝の閉口端に係止して第１フレーム部材については第１連結片の緩挿方向及びこれに垂直な方向に対する位置決めがなされ、第２フレーム部材については第２連結片の緩挿方向及びこれに垂直な方向に対する位置決めがなされるようにしたもので、第１フレーム部材及び第２フレーム部材の位置決めが、上述したスリット溝への突起の係止により上記各方向に対し行われるようになっているため、フレーム部材間に生ずるガタツキを抑えることができ、また、フレーム部材間に生ずる位置ずれを抑えることができ、また、位置決めされたところで第１フレーム部材及び第２フレーム部材同士が直接当接する構造にできる。
【０００７】
本発明の請求項２に係るフレーム部材の接続構造において、上記突起を、戸当り部材の取付座をも兼ねるように用いた場合には、戸当り部材の容易な取付が可能となり、また、戸当り部材自体であるようにした場合には、戸当り部材の新たな設置が不要となるので、利便性が向上する。
ここで言う戸当り部材とは、開き戸を閉じたときに扉体が行き過ぎないように、あるいは、扉体が当該扉体の固定枠体に当接して生ずる衝撃を緩和するために当該扉体のフレーム部材に取り付けられる突起物である。
【０００８】
【発明の実施の形態】
本発明の第１の実施の形態に係る接続構造を図１〜３を参照して説明する。
本実施の形態では、４つのフレーム部材で矩形状の枠体を形成し、かかる枠体に窓ガラスが配設された開き戸の扉体Ｗを採り上げ、本接続構造が、この扉体Ｗの枠体を構成するフレーム部材の、隣接するフレーム部材間に用いられる場合について説明する。但し、図１〜３には、本接続構造の一箇所、即ち、扉体Ｗの四隅のうちの一隅のみが描かれている。
扉体Ｗは、矩形状の枠体を構成する第１フレーム部材１と第２フレーム部材２とが連結部材３を介して接続され、しかも、フレーム部材１，２同士が直接当接する態様で接続されている。
【０００９】
第１フレーム部材１は、縦方向に長目の断面略口型をなす中空の横長枠体１ａと、この横長枠体１ａの上面１ａ_１から当該横長枠体１ａの一方側面（こちらが第１フレーム部材１の裏面）１ａ_２とは反対側の他方側面（こちらが第１フレーム部材１の表面）１ａ_３側に張出された略Ｌ字状折曲枠体１ｂとで構成され（図３も参照）、横長枠体１ａの中空部には、後述する連結部材３の第１連結片３ａが緩挿されるようになっており、また、折曲枠体１ｂは、扉体Ｗに配設される窓ガラス（図示せず）保持のための外周枠となっている。
そして、第１フレーム部材１は、その両端が当該第１フレーム部材１の横長枠体１ａの長手方向に対し４５゜で、且つ、当該第１フレーム部材１の上面１ａ_１がその下面１ａ_４に対しオーバハングする態様で切断加工され（この切断加工面を１ｃとする。当該切断加工面１ｃの先端部分は後述するコーナー部材１３が位置できるように長手方向に対して垂直に切り欠かれている。）、この第１フレーム部材１の側面１ａ_２には、当該側面１ａ_２の略中央で、且つ、上記切断加工面１ｃに近接するところに当該切断加工面１ｃに開口する態様でスリット溝４ａが設けられ、このスリット溝４ａの近傍で、当該側面１ａ_２の中央より上面１ａ_１側に位置するところに止めネジ５の挿通孔６ａが設けられている。
【００１０】
ところで、第１フレーム部材１の側面１ａ_２で、その上面１ａ_１の近傍に設けられた断面略Ｃ字状溝１ｄは、後述するダストシール部材８と同様なダストシール部材（図示せず）の取付溝であり、また、第１フレーム部材１の側面１ａ_３で、その下面１ａ_４の近傍に設けられた断面略Ｃ字状溝１ｅ（図３参照）は、窓ガラスの、後述するダストシール部材９と同様なダストシール部材（図示せず）の取付溝である。
【００１１】
第２フレーム部材２は、横方向に長目の断面略口型をなす中空の縦長枠体２ａと、この縦長枠体２ａの上面２ａ_１から当該縦長枠体２ａの一方側面（こちらが第２フレーム部材２の裏面）２ａ_２とは反対側の他方側面（こちらが第２フレーム部材２の表面）２ａ_３側に張出された略Ｌ字状折曲枠体２ｂとで構成され（図３も参照）、縦長枠体２ａの中空部には、後述する連結部材３の第２連結片３ｂが緩挿されるようになっており、また、折曲枠体２ｂは、扉体Ｗに配設される窓ガラス保持のための外周枠となっている。
そして、第２フレーム部材２は、第１フレーム部材１と同様に、その両端が当該第２フレーム部材２の縦長枠体２ａの長手方向に対し４５゜で、且つ、当該第２フレーム部材２の上面２ａ_１がその下面２ａ_４に対しオーバハングする態様で切断加工され（この切断加工面を２ｃとする。当該切断加工面２ｃの先端部分は後述するコーナー部材１３が位置できるように長手方向に対して垂直に切り欠かれている。）、この第２フレーム部材２の側面２ａ_２には、当該側面２ａ_２の略中央で、上記切断加工面２ｃに近傍するところに当該切断加工面２ｃに開口する態様でスリット溝４ｂが設けられ、このスリット溝４ｂの近傍で、当該側面２ａ_２の中央より上面２ａ_１側に位置するところに上述同様の止めネジ５の挿通孔６ｂが設けられている。更に、この第２フレーム部材２には、上記挿通孔６ｂの下方に、扉体Ｗのヒンジ金具（図示せず）の径大な取付穴７が設けられており、径小孔７ａ，７ｂはヒンジ金具を固定するための固定ネジ（図示せず）の挿通孔である。
【００１２】
ところで、第２フレーム部材２の側面２ａ_２で、その上面２ａ_１の近傍に設けられた断面略Ｃ字状溝２ｄは、扉体Ｗのような、例えば観音両開き戸に対し、扉体Ｗと扉体Ｗとの間の隙間を塞ぎ、埃や虫よけのために使用される図３に示すようなダストシール部材８の取付溝であり、このダストシール部材８は、扉体Ｗの第２フレーム部材２で、その隣り合う当該第２フレーム部材２のうちの少なくとも一方に取り付けられる。また、第２フレーム部材２の側面２ａ_３で、その下面２ａ_４の近傍に設けられた断面略Ｃ字状溝２ｅは、窓ガラスと固定枠体の側面２ａ_３との間に埃などが侵入するのを防止する図３に示すようなダストシール部材９の取付溝である。
【００１３】
連結部材３は、第１連結片３ａと第２連結片３ｂとで略Ｌ字型形状をなす薄板状部材であり、第１連結片３ａと第２連結片３ｂとは、図１中の二点鎖線Ａ−Ａ（Ｌ字状折曲部の外部位Ｐと内部位Ｑを結ぶ直線）に対し対称形態をなしている。そして、この連結部材３の一方側面、即ち、第１連結片３ａ及び第２連結片３ｂの一方側面（こちらが連結部材３の裏面）３ａ_１，３ｂ_１には、本実施の形態では第１連結片３ａ及び第２連結片３ｂに跨る態様で、上述した二点鎖線Ａ−Ａに対し対称形態をなす短寸の突起１０が、上記Ｌ字状折曲部の内部位Ｑ寄りに突設されている。かかる突起１０の外周形状は、上記第１フレーム部材１のスリット溝４ａと第２フレーム部材２のスリット溝４ｂとで形成される閉口溝孔の内周形状に等しい。具体的には、上記突起１０の外周形状（＝上記スリット溝４ａ、４ｂで形成される閉口溝孔の内周形状）は、その中心が上記二点鎖線Ａ−Ａ上にあって所定径を有する円と、当該円に接する、第１連結片の緩挿方向に平行な直線及び第２連結片の緩挿方向に平行な直線とで形成される形状をなし、これら両直線の交点が、本実施の形態では二点鎖線Ａ−Ａ上の、上記Ｌ字状折曲部の外部位Ｐ側に位置する形状をなしている。このような突起１０が、後述するように、第１フレーム部材１のスリット溝４ａ及び第２フレーム部材２のスリット溝４ｂに嵌め合わされこれらスリット溝４ａ、４ｂで形成される閉口溝孔に係止すると、第１フレーム部材１及び第２フレーム部材２の位置決めがなされる。
そして、この突起１０は、本実施の形態では、その上面が、例えばゴム部材などで成形された戸当り部材１１の取付座を兼ねており、そのため、当該突起１０には、戸当り部材１１が圧入されるように小孔１０ａが設けられている。尚、突起１０は、本実施の形態では、上記側面３ａ_１，３ｂ_１に一体として突設されているが、別体にして連結部材３に取り付けられるようにしたものであってもよい。また、突起１０が戸当り部材自体であってもよい。
【００１４】
ところで、第１連結片３ａ及び第２連結片３ｂには、突起１０を隔てて止めネジ５のネジ孔１２ａ，１２ｂが、第１フレーム部材１の挿通孔６ａ及び第２フレーム部材２の挿通孔６ｂに対応して設けられている。更に、第１連結片３ａの上面３ａ_２と第２連結片３ｂの上面３ｂ_２との接合部位（上記二点鎖線Ａ−Ａ上の外部位Ｐ側に位置するところ）には、コーナー部材１３が第１連結片３ａ及び第２連結片３ｂのそれぞれの両面から突出する態様で設けられており、かかるコーナー部材１３は、後述のようにして第１フレーム部材１及び第２フレーム部材２が位置決めされたとき、フレーム部材１，２の切欠き面を被覆して安全性を高めるとともに、外観的体裁を整え、また、フレーム部材１，２の溝１ｄ，２ｄに取り付けられるダストシール部材８等のストッパ的な役目を果たすものである。尚、このコーナー部材１３は、製作のし易さから連結部材３と一体に成形するようにしてもよい。また、第１連結片３ａの上面３ａ_２及び第２連結片３ｂの上面３ｂ_２の、各側面３ａ_１，３ｂ_１側に設けられた切欠きは、上記Ｃ字状溝１ｄ，２ｄとの干渉防止のためのものである（図３参照）。
【００１５】
本接続構造を用いた場合のフレーム部材１，２の接続のしかたを説明する。尚、本接続構造は、本実施の形態に係る扉体Ｗの場合、当該扉体Ｗの四隅に用いられるが、ここではその四隅のうちの一隅について説明する。
第１フレーム部材１及び第２フレーム部材２の、溝４ａが設けられている側面１ａ_２及び溝４ｂが設けられている側面２ａ_２と、連結部材３の、突起１０が設けられている側面３ａ_１，３ｂ_１とが同一側になるようにしてから、第１フレーム部材１に対し連結部材３の第１連結片３ａを、また、第２フレーム部材２に対し連結部材３の第２連結片３ｂを緩挿させる。この緩挿に際しては、第１フレーム部材１の横長枠体１ａと第１連結片３ａとの隙間及び第２フレーム部材２の縦長枠体２ａと第２連結片３ｂとの隙間を広めにしてあるので楽に挿入できる。しかるに、この緩挿に伴い、連結部材３の突起１０が、第１フレーム部材１のスリット溝４ａ及び第２フレーム部材２のスリット溝４ｂに嵌め合わされながら、第１フレーム部材１と第２フレーム部材２とが互いに接近する。そして、第１フレーム部材１の切断加工面１ｃと第２フレーム部材２の切断加工面２ｃとが当接した時（この時、上記切断加工面１ｃ，２ｃは、上記二点鎖線Ａ−Ａを含む平面と重なる）に、上記突起１０がこれらスリット溝４ａ及びスリット溝４ｂで形成される閉口溝孔に係止して第１フレーム部材１については第１連結片３ａの緩挿方向及びこれに垂直な方向に対する位置決めがなされ、第２フレーム部材２については第２連結片３ｂの緩挿方向及びこれに垂直な方向に対する位置決めがなされる。これにより、フレーム部材１，２間に生ずるガタツキを抑えることができ、また、フレーム部材１，２間に生ずる位置ずれを抑えることができる。このようにして位置決めがなされた後、各止めネジ５を、挿通孔６ａ，６ｂを通してネジ孔１２ａ，１２ｂに螺着させ、第１フレーム部材１と第２フレーム部材２との接続が完了する。同様にして、残りの三隅についても行えばよい。
【００１６】
ところで、上述した接続のしかたにおいては、第１フレーム部材１に対する第１連結片３ａの緩挿と、第２フレーム部材２に対する第２連結片３ｂの緩挿を同時に行うようなしかたを採ったが、例えば、最初に第１フレーム部材１に第１連結片３ａを緩挿して突起１０の一部をスリット溝４ａに嵌め合わせてから、第２フレーム部材２に第２連結片３ｂを緩挿して突起１０の残りの部分をスリット溝４ａに嵌め合わせ、最終的に突起１０がスリット溝４ａ及びスリット溝４ｂで形成される閉口溝孔に係止して第１フレーム部材１及び第２フレーム部材２の位置決めがなされるようにしてもよいことはもちろんである。
【００１７】
次に、本発明の第２の実施の形態に係る接続構造を図４を参照して説明する。但し、図４において、図１〜３の構成部材と同一の部材には同一番号を付し、その説明は割愛する。また、同図においては、図１〜３の第１フレーム部材１に相当する第１フレーム部材は省略されている。
本接続構造が第１の実施の形態に係る接続構造と異なるところは、上記突起１０に代えて突起２２を用いているため、連結部材３に代えて連結部材２０を用いている点である。また、突起１０から突起２２への変更に対応して、例えば図４に示すように第２フレーム部材２に代えて第２フレーム部材２１を用いている点が異なる。
【００１８】
かかる突起２２は、連結部材２０の第１連結片３ａ及び第２連結片３ｂに跨る態様で、上記二点鎖線Ａ−Ａに対し対称形態をなして、上記Ｌ字状折曲部の内部位Ｑ寄りに突設されている。この突起２２の外周形状（＝後述する第２フレーム部材２１のスリット溝２２ａと第１フレーム部材のスリット溝とで形成される閉口溝孔の内周形状）は、将棋の駒に類似の形状をなし、将棋の駒の鋭角部の頂点に相当する部位が、本実施の形態では二点鎖線Ａ−Ａ上の、連結部材２０におけるＬ字状折曲部の外部位Ｐ側に位置している。
一方、スリット溝２３は、第２フレーム部材２１における側面２ａ_２の略中央で、上記切断加工面２ｃに近傍するところに当該切断加工面２ｃに開口する態様で設けられており、かかるスリット溝２３は、上述のように、当該スリット溝２３と第１フレーム部材のスリット溝とで形成される閉口溝孔の内周形状が突起２２の外周形状に等しくなるように形成されている。
【００１９】
本接続構造を用いた場合の第１フレーム部材及び第２フレーム部材２１の接続のしかたを説明する。
本接続構造においても第１の実施の形態に係る接続構造と全く同様にして、第１フレーム部材に対し連結部材２０の第１連結片３ａを、また、第２フレーム部材２１に対し連結部材２０の第２連結片３ｂを緩挿させる。この緩挿に際しても、上述同様に隙間を広めにしてあるので楽に挿入できる。しかるに、この緩挿に伴い、連結部材２０の突起２２が、第１フレーム部材のスリット溝及び第２フレーム部材２１のスリット溝２３に嵌め合わされながら、第１フレーム部材と第２フレーム部材２１とが互いに接近する。そして、両者が当接した時に、上記突起２２がこれらスリット溝２３等で形成される閉口溝孔に係止して第１フレーム部材については第１連結片３ａの緩挿方向及びこれに垂直な方向に対する位置決めがなされ、第２フレーム部材２１については第２連結片３ｂの緩挿方向及びこれに垂直な方向に対する位置決めがなされる。これにより、第２フレーム部材２１等に生ずるガタツキを抑えることができ、また、第２フレーム部材２１等に生ずる位置ずれを抑えることができる。このようにして位置決めがなされた後、止めネジで固定して第１フレーム部材と第２フレーム部材２１との接続が完了する。本接続構造では、スリット溝２３等に対する突起２２の嵌合がスリット溝２３等の両側壁に案内される態様で行われるので、上記第１の実施の形態に係る接続構造に比べ、上記ガタツキや位置ずれをより確実に抑えることができる。
【００２０】
本接続構造においても、例えば、最初に第１フレーム部材に第１連結片３ａを緩挿して突起２２の一部を第１フレーム部材のスリット溝に嵌め合わせてから、第２フレーム部材２１に第２連結片３ｂを緩挿して突起２２の残りの部分をスリット溝２３に嵌め合わせ、最終的に突起２２がスリット溝２３等で形成される溝孔に係止して第１フレーム部材及び第２フレーム部材２１の位置決めがなされるようにしてもよいことはもちろんである。
【００２１】
次に、本発明の第３の実施の形態に係る接続構造を図５を参照して説明する。但し、図５において、図１〜３の構成部材と同一の部材には同一番号を付し、その説明は割愛する。また、同図においては、図１〜３の第１フレーム部材１に相当する第１フレーム部材は省略されている。
本接続構造が第１の実施の形態に係る接続構造と異なるところは、第１連結片３ａ及び第２連結片３ｂのそれぞれに独立して突起３２ａ，３２ｂを設けているため、連結部材３に代えて連結部材３０を用いている点である。また、このような突起３２ａ，３２ｂへの変更に対応して、例えば図５に示すように第２フレーム部材２に代えて第２フレーム部材３１を用いている点が異なる。
【００２２】
かかる突起３２ａ，３２ｂは、短寸の円筒状部材で、上述のように連結部材３０の第１連結片３ａ及び第２連結片３ｂのそれぞれに独立して、上記二点鎖線Ａ−Ａに対し対称位置で、且つ、上記Ｌ字状折曲部の内部位Ｑ寄りに突設されている。尚、その中心を二点鎖線Ａ−Ａ上にして設けられた小孔３４は、戸当り部材（図示せず）の取付孔である。
一方、スリット溝３３は、第２フレーム部材３１における側面２ａ_２の略中央で、且つ、上記切断加工面２ｃに近傍するところに、当該切断加工面２ｃに開口する態様で第２連結片３ｂの緩挿方向に平行な長円孔溝として設けられている。尚、図示されていないが、第１フレーム部材のスリット溝もまた、第２フレーム部材３１のスリット溝３３と同様な態様の長円孔溝として設けられている。
【００２３】
本接続構造を用いた場合の第１フレーム部材及び第２フレーム部材３１の接続のしかたを説明する。
本接続構造においては、突起３２ａ，３２ｂが、連結部材３０の第１連結片３ａ及び第２連結片３ｂのそれぞれに独立に設けられているので、例えば、最初に、第２フレーム部材３１に対し連結部材３０の第２連結片３ｂを緩挿させる。この緩挿に際しても、上述同様に隙間を広めにしてあるので楽に挿入できる。しかるに、この緩挿に伴い、連結部材３０の突起３２ｂが、第２フレーム部材３１のスリット溝３３に嵌め合わされながら、当該スリット溝３３の閉口端３３ａに当接して係止する。この係止状態に達したときには、第２フレーム部材３１の切断加工面２ｃが連結部材３０の二点鎖線Ａ−Ａを含む当該連結部材３０の側面３ｂ_１に垂直な平面に重なる。次に、第１フレーム部材に対し連結部材３０の第１連結片３ａを緩挿させ、これに伴い連結部材３０の突起３２ａを、第１フレーム部材のスリット溝に嵌め合わせながら当該スリット溝の閉口端に当接させて係止させる。この係止状態のとき、第１フレーム部材の切断加工面が連結部材３０の二点鎖線Ａ−Ａを含む当該連結部材３０の側面３ａ_１に垂直な平面に重なると同時に、第２フレーム部材３１の切断加工面２ｃと第１フレーム部材の切断加工面とが当接する。両者が当接した時に、第１フレーム部材については第１連結片３ａの緩挿方向及びこれに垂直な方向に対する位置決めがなされ、第２フレーム部材３１については第２連結片３ｂの緩挿方向及びこれに垂直な方向に対する位置決めがなされる。これにより、第２フレーム部材３１等に生ずるガタツキを抑えることができ、また、第２フレーム部材３１等に生ずる位置ずれを抑えることができる。このようにして位置決めがなされた後、止めネジで固定して第１フレーム部材と第２フレーム部材３１との接続が完了する。
【００２４】
ところで、上述した接続のしかたに代えて、第１フレーム部材に連結部材３０の第１連結片３ａを緩挿すると同時に、第２フレーム部材３１に連結部材３０の第２連結片３ｂを緩挿して第１フレーム部材と第２フレーム部材３１との接続を行ってよいことは言うまでもない。
【００２５】
【発明の効果】
本発明のフレーム部材の接続構造によれば、第１フレーム部材及び第２フレーム部材の位置決めが、両スリット溝で形成される閉口溝孔への突起の係止により、又は各スリット溝の閉口端への突起の係止により上記各方向に対し行われるために、フレーム部材間に生ずるガタツキを抑えることができ、また、フレーム部材間に生ずる位置ずれを抑えることができ、また、位置決めされたところで第１フレーム部材及び第２フレーム部材同士が直接当接する構造にできる。
【図面の簡単な説明】
【図１】第１の実施の形態に係る接続構造を裏側から見た斜視図である。
【図２】第１の実施の形態に係る接続構造を裏側から見た正面図である。
【図３】第１の実施の形態に係る接続構造を表側から見た斜視図である。
【図４】第２の実施の形態に係る接続構造を裏側から見た分解斜視図である。
【図５】第３の実施の形態に係る接続構造を裏側から見た分解斜視図である。
【図６】従来の接続構造に用いられる枠隅角部接続部材の斜視図である。
【図７】従来の接続構造の側面図である。
【符号の説明】
１第１フレーム部材
２第２フレーム部材
３，２０，３０連結部材
３ａ第１連結片
３ｂ第２連結片
４ａ，４ｂ，２３，３３スリット溝
１０，２２，３２ａ，３２ｂ突起
１１戸当り部材
３３ａ閉口端[0001]
[Technical field to which the invention belongs]
The present invention relates to a connection structure in a case where frame members constituting a frame of a door body provided in furniture, joinery or the like are connected to each other.
[0002]
[Prior art]
As a conventional frame member connection structure, a structure in which adjacent frame members are connected to each other via a connecting member is often used (for example, see Patent Document 1). A typical example of such a structure will be described with reference to the one disclosed in Patent Document 1 (FIGS. 6 and 7).
In this example, when the vertical frame 100 and the horizontal frame 101 are connected as a frame member of the door body, the longitudinal grooves 100a and 101a formed in the vertical frame 100 and the horizontal frame 101 are provided in the frame shown in FIG. The connecting pieces 103a and 103b of the corner connecting member (connecting member) 102 are inserted, and the inclined surface plate 102a is interposed between both end faces as shown in FIG. Then, the screws 104 are fixed by screwing in from the outside of the vertical frame 100 and the horizontal frame 101, and the screws 104 are also screwed into the through holes 102b formed in the front end portion of the inclined surface plate portion 102a to securely fix the butt end portion. I am doing so.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-141154 (pages 2 and 3, FIGS. 1 and 3)
[0004]
[Problems to be solved by the invention]
In the above connection structure, the insertion of the connection piece of the frame corner connection member (coupling member) into each groove of the vertical frame and the horizontal frame is loose for the purpose of facilitating the mounting. Has a structure in which occurrence of rattling between the vertical frame and the horizontal frame and the connecting member is unavoidable. In the above connection structure, as described in Patent Document 1, on the premise that a relative displacement occurs between the end faces of the vertical frame and the horizontal frame, a problem caused by such a displacement, that is, safety In order to prevent defects in appearance and appearance, the vertical and horizontal frames are not brought into direct contact with each other via the frame corner connection member, but the chamfered portion is formed on the outermost end surface of the frame corner connection member. (The outer surface end portion 102c in FIGS. 6 and 7) is provided to cope with this problem, but it is difficult to say from the viewpoint of appearance regardless of safety.
[0005]
The object of the present invention is to suppress the rattling that occurs between the frame members and the positional deviation that occurs between the frame members even if the frame member of the door body has a structure in which adjacent frame members are connected to each other directly. It is in providing the connection structure of the frame member which can suppress this.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a frame member connection structure according to claim 1 of the present invention includes a first connecting piece loosely inserted into a hollow having a substantially mouth-shaped cross section of a first frame member , and a second frame member. The first frame member and the second frame member are connected in such a manner that the first frame member and the second frame member are in direct contact with each other via a connecting member having a second connecting piece loosely inserted into the hollow having a substantially mouth-shaped cross section. of connection structure of the frame members that make up, the first connecting piece and the second connecting piece, on one side located on the back side of the door body, in the manner that spans the first coupling piece and the second connecting piece or providing a protrusion, or while independently for each of the first coupling piece and a second connecting piece either providing a protrusion, of the first frame member and second frame member, the first coupling piece and the second connecting piece while on one side of the side surface on the same side of the slit grooves respectively of When the connecting member is loosely inserted into the first frame member and the second frame member, the projection is locked to the closed groove hole formed by the both slit grooves, or the closed end of each slit groove, and the first frame member The positioning is made in the direction of slow insertion of the first connecting piece and the direction perpendicular thereto, and the second frame member is positioned in the direction of slow insertion of the second connecting piece and the direction perpendicular thereto. Since the positioning of the first frame member and the second frame member is performed in each of the above directions by the locking of the protrusions to the slit grooves, the rattling occurring between the frame members can be suppressed. In addition, it is possible to suppress a positional shift that occurs between the frame members, and the first frame member and the second frame member directly contact each other when positioned. It can be in the structure.
[0007]
In the frame member connection structure according to claim 2 of the present invention, when the projection is used so as to serve also as a mounting seat for the door stop member, the door stop member can be easily attached. When the contact member itself is used, since a new installation of the door contact member is not required, convenience is improved.
The door contact member here means that the door body does not go too far when the hinged door is closed, or in order to reduce the impact caused by the door body coming into contact with the fixed frame body of the door body. It is a protrusion attached to the frame member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A connection structure according to a first embodiment of the present invention will be described with reference to FIGS.
In the present embodiment, a rectangular frame body is formed by four frame members, and the door body W of the hinged door in which the window glass is disposed on the frame body, and this connection structure is the frame of the door body W. The case where the frame member which comprises a body is used between adjacent frame members is demonstrated. However, in FIGS. 1 to 3, only one corner of the connection structure, that is, one of the four corners of the door W is depicted.
The door body W is connected in such a manner that the first frame member 1 and the second frame member 2 constituting the rectangular frame body are connected via the connecting member 3, and the frame members 1 and 2 are in direct contact with each other. Has been.
[0009]
The first frame member 1 includes a hollow Horizontal frame member 1a forming the long-th cross section mouth type longitudinally, one side face of the horizontal frame 1a from the upper surface 1a ₁ of the horizontal frame 1a (the item first the rear surface) 1a ₂ of the frame member 1 is constituted by the opposite side of the other side (substantially L-shaped bent frame 1b which here is issued Zhang the first surface of the frame member 1) 1a ₃ side (FIG. 3 The first connecting piece 3a of the connecting member 3 to be described later is loosely inserted into the hollow portion of the horizontally long frame 1a, and the bent frame 1b is disposed on the door W. This is an outer peripheral frame for holding the window glass (not shown).
The first frame member 1 in the longitudinal direction to 45 ° of the horizontal frame 1a of its ends the first frame member 1, and the upper surface 1a ₁ of the first frame member 1 has on its lower surface 1a ₄ On the other hand, it is cut in an overhanging manner (this cut surface is defined as 1c. The tip portion of the cut surface 1c is cut out perpendicular to the longitudinal direction so that a corner member 13 described later can be positioned. ), the first on the side surface 1a ₂ of the frame member 1, in substantially the center of the side surface 1a _2, and a slit groove 4a in a manner which is open to the cutting face 1c at where near the aforementioned cutting surface 1c is provided, in the vicinity of the slit grooves 4a, through holes 6a of the screw 5 stop at that position to the upper surface 1a ₁ side from the center of the side surface 1a ₂ are provided.
[0010]
By the way, on the side surface 1a ₂ of the first frame member 1, the substantially C-shaped groove 1d in the vicinity of the upper surface 1a ₁ is a mounting groove for a dust seal member (not shown) similar to the dust seal member 8 described later. , and the addition, in the first frame member 1 side 1a _3, the disposed near the lower surface 1a ₄ was substantially C-shaped cross section groove 1e (see FIG. 3) of the window glass, a dust seal member 9 to be described later It is the attachment groove | channel of the same dust seal member (not shown).
[0011]
The second frame member 2 has a hollow vertical frame member 2a constituting the long-th cross section mouth type laterally one side of the longitudinal frame 2a from the upper surface 2a ₁ of the longitudinal frame 2a (the item second the back surface) 2a ₂ of the frame member 2 is composed of the opposite side of the other side (substantially L-shaped bent frame 2b which here is issued Zhang to the second surface of the frame member 2) 2a ₃ side (FIG. 3 The second connecting piece 3b of the connecting member 3 described later is loosely inserted into the hollow portion of the vertically long frame 2a, and the bent frame 2b is disposed on the door W. It is an outer peripheral frame for holding the window glass.
The second frame member 2 has both ends at 45 degrees with respect to the longitudinal direction of the longitudinal frame 2a of the second frame member 2 and the second frame member 2 in the same manner as the first frame member 1. The upper surface 2a ₁ is cut and processed so as to overhang the lower surface 2a ₄ (this cut surface is referred to as 2c. The tip portion of the cut surface 2c is in the longitudinal direction so that a corner member 13 described later can be positioned. are cut out in vertical Te.), the second on the side surface 2a ₂ of the frame member 2, in substantially the center of the side surface 2a _2, opening on the cut surface 2c at the vicinity to the cutting surface 2c slit groove 4b is formed in a manner that, in the vicinity of the slit groove 4b, have insertion holes 6b of the above similar set screw 5 is provided at the position from the center of the side surface 2a ₂ on the upper face 2a ₁ side . Further, the second frame member 2 is provided with a large-diameter mounting hole 7 for a hinge fitting (not shown) of the door W below the insertion hole 6b. The small-diameter holes 7a and 7b are formed as follows. It is an insertion hole of a fixing screw (not shown) for fixing the hinge fitting.
[0012]
Meanwhile, the side 2a ₂ of the second frame member 2, a substantially C-shaped grooves 2d provided in the vicinity of the upper surface 2a _1, such as a door W, to e.g. Guanyin Double swing door, a door W 3 is a mounting groove of the dust seal member 8 as shown in FIG. 3 that closes the gap between the door body W and is used to prevent dust and insects. The dust seal member 8 is a second frame of the door body W. The member 2 is attached to at least one of the adjacent second frame members 2. Further, in the side surface 2a ₃ of the second frame member 2, the substantially C-shaped groove 2e provided in the vicinity of the lower surface 2a ₄ has dust or the like invaded between the window glass and the side surface 2a ₃ of the fixed frame. This is a mounting groove for the dust seal member 9 as shown in FIG.
[0013]
The connecting member 3 is a thin plate-like member having a substantially L-shape formed by the first connecting piece 3a and the second connecting piece 3b. The first connecting piece 3a and the second connecting piece 3b are the same as those shown in FIG. It is symmetrical with respect to the dotted line AA (a straight line connecting the external position P of the L-shaped bent portion and the internal portion Q). Then, one side surface of the connecting member 3, that is, one side surface of the first connecting piece 3a and the second connecting piece 3b (this is the back surface of the connecting member 3) 3a ₁ and 3b ₁ is the _first side in this embodiment. A short protrusion 10 that is symmetrical with respect to the two-dot chain line A-A is provided in a manner straddling the connecting piece 3a and the second connecting piece 3b and protrudes closer to the inner portion Q of the L-shaped bent portion. Has been. The outer peripheral shape of the projection 10 is equal to the inner peripheral shape of the closed groove formed by the slit groove 4 a of the first frame member 1 and the slit groove 4 b of the second frame member 2. Specifically, the outer peripheral shape of the protrusion 10 (= the inner peripheral shape of the closed groove formed by the slit grooves 4a and 4b) is centered on the two-dot chain line AA and has a predetermined diameter. A shape formed by a circle having a straight line parallel to the gentle insertion direction of the first connecting piece and a straight line parallel to the gentle insertion direction of the second connecting piece, which are in contact with the circle, and the intersection of these two straight lines is In the present embodiment, a shape located on the outer side P side of the L-shaped bent portion on the two-dot chain line AA is formed. As will be described later, such a protrusion 10 is fitted into the slit groove 4a of the first frame member 1 and the slit groove 4b of the second frame member 2, and is locked in the closed groove formed by the slit grooves 4a and 4b. Then, the first frame member 1 and the second frame member 2 are positioned.
In this embodiment, the upper surface of the protrusion 10 also serves as a mounting seat for the door stop member 11 formed of, for example, a rubber member. Therefore, the door stop member 11 is provided on the protrusion 10. A small hole 10a is provided so as to be press-fitted. In the present embodiment, the protrusions 10 are integrally provided on the side surfaces 3a ₁ and 3b ₁ in this embodiment. However, the protrusions 10 may be separately attached to the connecting member 3. Further, the protrusion 10 may be a door stop member itself.
[0014]
By the way, the first connecting piece 3a and the second connecting piece 3b are provided with screw holes 12a and 12b of the set screw 5 with a protrusion 10 therebetween, and an insertion hole 6a of the first frame member 1 and an insertion hole of the second frame member 2. 6b is provided. Furthermore, the upper surface 3a ₂ of the first connecting piece 3a to the joint portion between the upper surface 3b ₂ of the second connecting piece 3b (where located outside position P side of the two-dot chain line the A-A), the corner member 13 Are provided so as to protrude from both surfaces of the first connecting piece 3a and the second connecting piece 3b, and the corner member 13 is positioned by the first frame member 1 and the second frame member 2 as described later. When this is done, the cut-out surfaces of the frame members 1 and 2 are covered to enhance safety, and the appearance is adjusted, and a stopper such as a dust seal member 8 attached to the grooves 1d and 2d of the frame members 1 and 2 It plays a role. In addition, you may make it form this corner member 13 integrally with the connection member 3 from the ease of manufacture. Further, the top surface 3b ₂ of the upper surface 3a ₂ and the second connecting pieces 3b of the first connecting piece 3a, the notch provided on each side _3a 1, 3b ₁ side, interference with the C-shaped groove 1d, 2d This is for prevention (see FIG. 3).
[0015]
How to connect the frame members 1 and 2 when this connection structure is used will be described. In the case of the door body W according to the present embodiment, this connection structure is used at the four corners of the door body W. Here, one of the four corners will be described.
The side surface 1a ₂ provided with the groove 4a and the side surface 2a ₂ provided with the groove 4b of the first frame member 1 and the second frame member 2, and the side surface 3a provided with the protrusion 10 of the connecting member 3 ₁ , 3 b ₁ and the first connecting piece 3 a of the connecting member 3 with respect to the first frame member 1, and the second connecting piece of the connecting member 3 with respect to the second frame member 2, so that ₁ and 3 b ₁ are on the same side. 3b is loosely inserted. In this loose insertion, the gap between the horizontally long frame 1a of the first frame member 1 and the first connecting piece 3a and the gap between the vertically long frame 2a of the second frame member 2 and the second connecting piece 3b are widened. So it can be inserted easily. However, with this loose insertion, the projection 10 of the connecting member 3 is fitted into the slit groove 4a of the first frame member 1 and the slit groove 4b of the second frame member 2, while the first frame member 1 and the second frame member. 2 approach each other. When the cutting surface 1c of the first frame member 1 and the cutting surface 2c of the second frame member 2 come into contact with each other (at this time, the cutting surfaces 1c and 2c have the two-dot chain line AA. The projection 10 is engaged with the closed groove formed by the slit groove 4a and the slit groove 4b so that the first frame member 1 is loosely inserted in the direction of the first connecting piece 3a and Positioning is performed in the vertical direction, and the second frame member 2 is positioned in the slow insertion direction of the second connecting piece 3b and the direction perpendicular thereto. Thereby, the play which arises between the frame members 1 and 2 can be suppressed, and the position shift which arises between the frame members 1 and 2 can be suppressed. After positioning is performed in this manner, the set screws 5 are screwed into the screw holes 12a and 12b through the insertion holes 6a and 6b, and the connection between the first frame member 1 and the second frame member 2 is completed. Similarly, the remaining three corners may be performed.
[0016]
By the way, in the connection method mentioned above, the method of performing the slow insertion of the 1st connection piece 3a with respect to the 1st frame member 1 and the slow insertion of the 2nd connection piece 3b with respect to the 2nd frame member 2 was taken simultaneously. For example, the first connecting piece 3a is first loosely inserted into the first frame member 1 and a part of the protrusion 10 is fitted into the slit groove 4a, and then the second connecting piece 3b is loosely inserted into the second frame member 2. The remaining portion of the protrusion 10 is fitted into the slit groove 4a, and finally the protrusion 10 is locked in the closed groove formed by the slit groove 4a and the slit groove 4b, so that the first frame member 1 and the second frame member 2 are engaged. Of course, the positioning may be performed.
[0017]
Next, a connection structure according to a second embodiment of the present invention will be described with reference to FIG. However, in FIG. 4, the same members as those in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted. Moreover, in the same figure, the 1st frame member equivalent to the 1st frame member 1 of FIGS. 1-3 is abbreviate | omitted.
This connection structure is different from the connection structure according to the first embodiment in that the connection member 20 is used instead of the connection member 3 because the protrusion 22 is used instead of the protrusion 10. Further, in response to the change from the protrusion 10 to the protrusion 22, for example, the second frame member 21 is used instead of the second frame member 2 as shown in FIG.
[0018]
The protrusions 22 are symmetrical with respect to the alternate long and two short dashes line A-A in such a manner as to straddle the first connecting piece 3 a and the second connecting piece 3 b of the connecting member 20, so It protrudes near the Q. The outer peripheral shape of the projection 22 (= the inner peripheral shape of the closed groove formed by the slit groove 22a of the second frame member 21 and the slit groove of the first frame member, which will be described later), is similar to the shogi piece. None, the portion corresponding to the apex of the acute angle portion of the shogi piece is located on the external position P side of the L-shaped bent portion of the connecting member 20 on the two-dot chain line AA in the present embodiment.
On the other hand, the slit groove 23 is a substantially center of the side surface 2a ₂ of the second frame member 21 is provided in a manner open to the cut surface 2c at the vicinity to the cutting surface 2c, such slit groove 23 As described above, the inner peripheral shape of the closed groove formed by the slit groove 23 and the slit groove of the first frame member is formed to be equal to the outer peripheral shape of the protrusion 22.
[0019]
How to connect the first frame member and the second frame member 21 when this connection structure is used will be described.
Also in this connection structure, the first connection piece 3a of the connection member 20 is connected to the first frame member and the connection member 20 is connected to the second frame member 21 in exactly the same manner as the connection structure according to the first embodiment. The second connecting piece 3b is loosely inserted. In this loose insertion, the gap is widened as described above, so that it can be inserted easily. However, with this loose insertion, the projection 22 of the connecting member 20 is fitted into the slit groove of the first frame member and the slit groove 23 of the second frame member 21, while the first frame member and the second frame member 21 are fitted together. Approach each other. And when both contact | abut, the said protrusion 22 is latched by the closed slot formed by these slit grooves 23 grade | etc., And about the 1st connection piece 3a about the 1st frame member, and perpendicular | vertical to this The second frame member 21 is positioned in the direction in which the second connecting piece 3b is slowly inserted and in the direction perpendicular thereto. Thereby, the play which arose in the 2nd frame member 21 grade | etc., Can be suppressed, and the position shift which arises in the 2nd frame member 21 grade | etc., Can be suppressed. After the positioning is performed in this manner, the connection between the first frame member and the second frame member 21 is completed by fixing with a set screw. In this connection structure, since the fitting of the protrusions 22 to the slit grooves 23 and the like is performed in a mode guided to both side walls of the slit grooves 23 and the like, the backlash and the backlash are less than those of the connection structure according to the first embodiment. Misalignment can be suppressed more reliably.
[0020]
Also in this connection structure, for example, the first connecting piece 3a is first loosely inserted into the first frame member, and a part of the protrusion 22 is fitted into the slit groove of the first frame member, and then the second frame member 21 is fitted with the second frame member 21. 2 The connecting piece 3b is loosely inserted and the remaining portion of the protrusion 22 is fitted into the slit groove 23, and finally the protrusion 22 is locked in the groove formed by the slit groove 23 or the like, and the first frame member and the second frame Of course, the frame member 21 may be positioned.
[0021]
Next, a connection structure according to a third embodiment of the present invention will be described with reference to FIG. However, in FIG. 5, the same members as those in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted. Moreover, in the same figure, the 1st frame member equivalent to the 1st frame member 1 of FIGS. 1-3 is abbreviate | omitted.
This connection structure is different from the connection structure according to the first embodiment in that the protrusions 32a and 32b are provided independently on the first connection piece 3a and the second connection piece 3b, respectively. Instead, the connection member 30 is used. Further, in response to such changes to the protrusions 32a and 32b, for example, the second frame member 31 is used instead of the second frame member 2 as shown in FIG.
[0022]
The protrusions 32a and 32b are short cylindrical members, and are independent of the first connecting piece 3a and the second connecting piece 3b of the connecting member 30 as described above with respect to the two-dot chain line AA. It is provided in a symmetrical position and near the inner part Q of the L-shaped bent part. In addition, the small hole 34 provided with the center thereof on the two-dot chain line AA is an attachment hole for a door stop member (not shown).
On the other hand, the slit groove 33 is formed at the approximate center of the side surface 2a ₂ of the second frame member 31 and in the form close to the cutting surface 2c so as to open to the cutting surface 2c. It is provided as an oblong hole groove parallel to the gentle insertion direction. Although not shown, the slit groove of the first frame member is also provided as an oblong hole groove having the same mode as the slit groove 33 of the second frame member 31.
[0023]
How to connect the first frame member and the second frame member 31 when this connection structure is used will be described.
In this connection structure, since the protrusions 32a and 32b are independently provided on each of the first connection piece 3a and the second connection piece 3b of the connection member 30, for example, first, the protrusions 32a and 32b are formed on the second frame member 31 first. The second connecting piece 3b of the connecting member 30 is loosely inserted. In this loose insertion, the gap is widened as described above, so that it can be inserted easily. However, with this loose insertion, the protrusion 32b of the connecting member 30 is brought into contact with and locked to the closed end 33a of the slit groove 33 while being fitted into the slit groove 33 of the second frame member 31. When reaching the locking state, overlaps a plane perpendicular to the side surface 3b ₁ of the connecting member 30 cut surface 2c of the second frame member 31 comprises a chain line A-A two points of the connecting member 30. Next, the first connecting piece 3a of the connecting member 30 is loosely inserted into the first frame member, and the projection 32a of the connecting member 30 is fitted into the slit groove of the first frame member. The end is brought into contact with and locked. When the locked state, and at the same time cut surface of the first frame member overlaps with a plane perpendicular to the side surface 3a ₁ of the connecting member 30 comprising a chain line A-A two points of the connecting member 30, the second frame member 31 The cut surface 2c of the first frame member comes into contact with the cut surface of the first frame member. When both are in contact with each other, the first frame member is positioned in the slow insertion direction of the first connection piece 3a and the direction perpendicular thereto, and the second frame member 31 is in the slow insertion direction of the second connection piece 3b and Positioning in a direction perpendicular to this is performed. Thereby, the play which arose in the 2nd frame member 31 grade | etc., Can be suppressed, and the position shift which arises in the 2nd frame member 31 grade | etc., Can be suppressed. After the positioning is performed in this manner, the connection between the first frame member and the second frame member 31 is completed by fixing with a set screw.
[0024]
By the way, it replaces with the connection method mentioned above, and the 1st connection piece 3a of the connection member 30 is loosely inserted in the 1st frame member, and the 2nd connection piece 3b of the connection member 30 is loosely inserted in the 2nd frame member 31 simultaneously. Needless to say, the first frame member and the second frame member 31 may be connected.
[0025]
【The invention's effect】
According to the connection structure of the frame member of the present invention, the positioning of the first frame member and the second frame member is performed by locking the protrusion to the closed groove formed by both slit grooves or the closed end of each slit groove. Since this is performed in the above-mentioned directions by locking the protrusions to the frame, it is possible to suppress rattling between the frame members, and to suppress positional deviation between the frame members. The first frame member and the second frame member can be in direct contact with each other.
[Brief description of the drawings]
FIG. 1 is a perspective view of a connection structure according to a first embodiment viewed from the back side.
FIG. 2 is a front view of the connection structure according to the first embodiment viewed from the back side.
FIG. 3 is a perspective view of the connection structure according to the first embodiment viewed from the front side.
FIG. 4 is an exploded perspective view of a connection structure according to a second embodiment viewed from the back side.
FIG. 5 is an exploded perspective view of a connection structure according to a third embodiment as viewed from the back side.
FIG. 6 is a perspective view of a frame corner connecting member used in a conventional connection structure.
FIG. 7 is a side view of a conventional connection structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st frame member 2 2nd frame members 3, 20, 30 Connection member 3a 1st connection piece 3b 2nd connection piece 4a, 4b, 23, 33 Slit groove 10, 22, 32a, 32b Protrusion 11 Door contact member 33a Closure end

Claims

A first coupling piece which is loosely inserted into the hollow forming the cross section mouth type of the first frame member, a connecting member and a second coupling piece which are loosely inserted into the hollow forming the cross section mouth type of the second frame member a connecting structure of the first frame member and second frame member and the frame members that make up the frame of the connected in abutting manner directly door body via said first connecting piece and the second connecting piece On one side surface that is located on the back side of the door body, a protrusion is formed in a manner straddling the first connection piece and the second connection piece, or independently on each of the first connection piece and the second connection piece. On the other hand, the first frame member and the second frame member are each provided with a slit groove on one side surface on the same side as the one side surface of the first connection piece and the second connection piece, and the first frame member of the connection member. And the protrusion along with the loose insertion into the second frame member Each of the first connecting piece and the second connecting piece of the first frame member and the second frame member are inserted into the closed groove holes formed by the slit grooves or the closed ends of the slit grooves. A frame member connection structure characterized in that positioning in a direction and a direction perpendicular thereto is performed.

2. The frame member connection structure according to claim 1, wherein the protrusion serves as a mounting seat for the door stop member or the door stop member itself.