JP3554915B2

JP3554915B2 - Door hinge

Info

Publication number: JP3554915B2
Application number: JP18846798A
Authority: JP
Inventors: 正人関口
Original assignee: ＹｋｋＡｐ株式会社
Priority date: 1998-07-03
Filing date: 1998-07-03
Publication date: 2004-08-18
Anticipated expiration: 2018-07-03
Also published as: JP2000017929A

Description

【０００１】
【発明の属する技術分野】
本発明は、木質扉を取付開口枠に開閉自在に取付ける扉用蝶番に関する。
【０００２】
【従来の技術】
扉用蝶番は上部蝶番と下部蝶番を備え、上部蝶番の一方の扉羽根を扉上部、他方の扉羽根を取付開口枠の上部にそれぞれ取付け、下部蝶番の一方の扉羽根を扉下部、他方の扉羽根を取付開口枠の下部にそれぞれ取付ける。
【０００３】
【発明が解決しようとする課題】
木質扉の蝶番取付けは施工現場で施工作業者が扉羽根を扉、取付開口枠に木ねじで直接取付けるのが一般的である。このように木ねじで取付ける場合に木ねじが曲がってねじ込まれたり、ねじ込みトルクが高いために木ねじが空回りすることがあり、その蝶番の取付け強度が施工作業者の技量によって異なることがあり、扉の重量をささえ長期の開閉に耐えられる十分な取付強度とするには熟練した施工作業者が慎重に木ねじをねじ込むので、その施工が面倒である。
【０００４】
また、蝶番取替え等で扉にねじ込んである木ねじを１度抜き、再度同じところにねじ込んだ時に木ねじが扉に十分に食いつかず取付強度が低いので、異なるところにねじ込む必要がある。
木ねじを異なるところにねじ込むには蝶番の位置を変えることになり、その作業が大変である。
【０００５】
また、扉を取付開口枠に取付けるには、上部蝶番、下部蝶番の他方の扉羽根を取付開口枠にそれぞれ取付け、この状態で扉を持って上部蝶番、下部蝶番の一方の扉羽根を扉吊元側端面の上部、下部にそれぞれ取付けてある。
このようにして扉を取付ける場合に誤まって扉を上下反対として取付けることがあり、その場合には扉を外して再度取付けし直すので、その作業が面倒である。
【０００６】
そこで、本発明は前述の課題を解決できるようにした扉用蝶番を提供することを目的とする。
【０００７】
【課題を解決するための手段】
第１の発明は、上部蝶番１０と、この上部蝶番１０の一方の扉羽根１１に取付けられ孔２５を有する上部金具２０と、扉７０の上部寄りに取付けられ取付用ねじ孔３３を有する金属製の上部固定ベース３０と、下部蝶番４０と、この下部蝶番４０の一方の扉羽根４１に取付けられ孔５５を有する下部金具５０と、扉７０の下部寄りに取付けられ取付用ねじ孔６３を有する金属製の下部固定ベース６０を備え、
前記上部金具２０の孔２５から取付用ねじ８１を上部固定ベース３０の取付用ねじ孔３３にねじ込んで上部金具２０を上部固定ベース３０に取付け、前記下部金具５０の孔５５から取付用ねじ８１を下部固定ベース６０の取付用ねじ孔６３にねじ込んで下部金具５０を下部固定ベース６０に取付けるようにし、
前記上部金具２０と上部固定ベース３０の一方における上下方向中央部よりも一方にずれた位置で、かつ左右中央部よりも一方にずれた位置に１つの突起を設け、前記上部金具２０と上部固定ベース３０の他方における上部寄りで、かつ左右一方寄り位置に第１穴３４、下寄りでかつ左右他方寄り位置に第２穴３５をそれぞれ形成し、この第１穴３５、第２穴３６は前記突起が嵌まり合う大きさで、前記上部金具２０を左右反転することで突起が第１穴３５と第２穴３６の一方に嵌まり合うように構成し、
前記下部金具５０と下部固定ベース６０の一方における上下方向中央部よりも他方にずれた位置で、かつ左右中央部よりも一方にずれた位置に１つの突起を設け、前記下部金具５０と下部固定ベース６０の他方における上部寄りで、かつ左右他方寄り位置に第１穴６４、下寄りでかつ左右一方寄り位置に第２穴６５をそれぞれ形成し、この第１穴６４、第２穴６５は前記突起が嵌まり合う大きさで、前記下部金具５０を左右反転することで突起が第１穴６４と第２穴６５の一方に嵌まり合うように構成したことを特徴とする扉用蝶番である。
【０００８】
第２の発明は、第１の発明において、前記各突起をフランジを有するピンとし、前記各穴はフランジよりも大きく、かつ穴と連続してフランジよりも小さくピンよりも大きな長孔を有するものとした扉用蝶番である。
【００１１】
【作用】
第１の発明によれば、扉７０に取付けた金属製の上部固定ベース３０の取付用ねじ孔３３に取付用ねじ８１をねじ込んで上部蝶番１０の一方の扉羽根１１に取付けた上部金具２０を扉７０に取付けるし、扉７０に取付けた金属製の下部固定ベース６０の取付用ねじ孔６３に取付用ねじ８１をねじ込んで下部蝶番４０の一方の扉羽根４１に取付けた下部金具５０を扉７０に取付けるので、上部蝶番１０、下部蝶番４０を扉７０に取付ける取付用ねじ８１を熟練者でなくとも簡単に正しくねじ込むことができる。
これにより、上部蝶番、下部蝶番を扉に簡単で、しかも十分な取付強度として取付けでき、施工が容易である。
【００１２】
また、取付用ねじ８１を１度抜き、再度ねじ込んだ時にも十分に食いつき十分な取付強度が得られる。
これによって、蝶番取替え等しても十分な取付強度で取付けできる。
【００１３】
また、上部金具２０と上部固定ベース３０の一方に設けた突起と下部金具５０の下部固定ベース６０の一方に設けた突起は、上下方向の位置が相違するし、上部金具２０と上部固定ベース３０の他方に形成した第１穴３４、第２穴３５と下部金具５０と下部固定ベース６０の他方に設けた第１穴６４、第２穴６５は、左右方向の位置が相違しているから、上部金具２０を下部固定ベース６０に取付けようとすると突起と第１穴、第２穴が嵌まり合うことがないし、下部金具５０を上部固定ベース３０に取付けようとすると突起と第１穴、第２穴が嵌まり合うことがない。
したがって、上部金具２０を下部固定ベース６０に取付けできないし、下部金具５０を上部固定ベース３０に取付けできない。
これによって、上部蝶番１０、下部蝶番４０を取付開口枠に取付けると共に、この一方の扉羽根１１，４１に上部金具２０、下部金具５０を取付け、扉７０に上部固定ベース３０、下部固定ベース６０を取付けた状態で、扉７０を取付ける時に扉７０を誤まって上下反対に取付けることを未然に防止できる。
【００１４】
また、上部金具２０、下部金具５０を左右反転して取付けできるので、扉７０に上部蝶番１０、下部蝶番４０を左右勝手違いに取付けでき、扉７０を取付開口枠に押し、引き、左右勝手違いに取付けできる。
【００１５】
第２の発明によれば、フランジを穴に挿入して長孔に沿って左右に移動することで上部金具２０、下部金具５０が上部固定ベース３０、下部固定ベース６０に仮支持されるので、上部金具２０、下部金具５０を手で押えなくとも取付用ねじ８１を取付用ねじ孔３３，６３にねじ込むことができ、その作業が容易である。
【００１６】
【発明の実施の形態】
図１に示すように、上部蝶番１０と上部金具２０と金属製の上部固定ベース３０及び下部蝶番４０と下部金具５０と金属製の下部固定ベース６０で扉用蝶番を形成している。扉７０は木質扉で、その吊元側端面７１の上部寄りに上部凹陥部７２が形成され、下部寄りに下部凹陥部７３が形成してある。
【００１７】
前記上部蝶番１０は一方の扉羽根１１と図示しない他方の扉羽根を図示しない軸で揺動自在に連結してある。
前記一方の扉羽根１１の上下寄りに左右方向に長い取付用長孔１２が形成され、上下中間の左右中間に開口窓１３が形成され、上下中間の左右一端寄りに左右方向に長い調整用長孔１４が形成してある。この実施の形態では調整用長孔１４は一方の扉羽根１１の一端面に開口している。
【００１８】
前記上部金具２０は横板２１と縦板２２で断面Ｌ字形状で、その横板２１の上下寄りに取付用ねじ孔２３が形成され、上下中間に調整用ねじ孔２４が形成され、上下端近くには孔２５が形成してある。前記横板２１の裏面の一部分に突起、例えばフランジ２６を有するピン２７が設けてある。前記縦板２２に扉羽根挿通用の開口部２８が形成してある。
【００１９】
前記上部固定ベース３０は矩形板状で、その上下中間には調整用ねじが挿入する孔、例えば左右方向に長い長孔３１が形成してある。上部固定ベース３０の上下寄りに固定用孔３２がそれぞれ形成され、上下端近くに取付用ねじ孔３３がそれぞれ形成してある。上部固定ベース３０における長孔３１を境とした上下寄りには第１穴３４、第２穴３５が形成してあり、第１穴３４は左右一方寄りで、かつ左右他方に向う第１長孔３６が連続して形成してある。この第１長孔３６は第１穴３４の径よりも幅狭である。
前記第２穴３５は左右他方寄りで、かつ左右一方に向う第２長孔３７が連続して形成してある。この第２長孔３７は第２穴３５の径よりも幅狭である。
【００２０】
前記扉７０の上部凹陥部７２は上部固定ベース３０の平面形状とほぼ同一で、扉７０の表裏面に切欠部７４でそれぞれ開口している。上部凹陥部７２の上下方向中間に調整用ねじが突出する中間凹部７５、ピン２７が突出する上下寄りの凹部７６、取付用ねじが突出する上下端近くの凹部７７がそれぞれ形成してある。前記中間凹部７５、上下寄りの凹部７６は左右方向に長い凹部である。
【００２１】
上部固定ベース３０は扉７０の上部凹陥部７２に挿入され、固定用孔３２から木ネジ８０を扉７０の吊元側端面７１にねじ込んで強固に固定される。これによって、上部固定ベース３０の長孔３１が中間凹部７５に合致し、第１穴３４、第１長孔３６が上方寄りの凹部７６に合致し、第２穴３５、第２長孔３７が下方寄りの凹部７６に合致し、取付用ねじ孔３３が上下端近くの凹部７７に合致する。
【００２２】
上部金具２０は上部固定ベース３０に重ね合せ、孔２５から取付用ねじ８１を取付用ねじ孔３３にねじ込んで取付けられる。この時上部金具２０のピン２７が第１穴３４又は第２穴３５に嵌まり合う。例えば上部金具２０の縦板２２が扉７０の左側寄りとなるように取付ければピン２７は第１穴３４に嵌まり合う。上部金具２０の縦板２２が扉７０の右側寄りとなるように左右反転して取付けるとピン２７は第２穴３５に嵌まり合う。
【００２３】
すなわち、上部金具２０のピン２７は上下方向中央部よりも一方にずれた位置で、かつ左右中央部よりも一方にずれた位置に形成してあるので、左右反転することでピン２７が第１穴３４、第２穴３５の一方に嵌まり合う。このようであるから上部蝶番１０を左右勝手違いに取付けできる。
【００２４】
また、ピン２７が第１穴３４又は第２穴３５に嵌まり合うとフランジ２６が第１穴３４、第２穴３５よりも突出し、ピン２７は第１長孔３６、第２長孔３７に沿って左右方向に移動可能であるから、上部金具２０を左右方向に若干移動することでフランジ２６が上部固定ベース３０の裏面に接して外れないように仮支持される。すなわち、第１穴３４、第２穴３５はフランジ２６よりも若干大径で、第１長孔３６、第２長孔３７の幅はピン２７の径よりも大きく、フランジ２６の径よりも小さい。
【００２５】
前記上部蝶番１０の一方の扉羽根１１は扉羽根挿通用の開口部２８内に左右移動自在に挿通され、この一方の扉羽根１１は開口部２８と接する部分を支点として前後に揺動可能に支持される。固定用長孔１２から固定用ねじ８２を固定用ねじ孔２３にねじ込むと共に、調整用長孔１４から調整用ねじ８３を調整用ねじ孔２４にねじ込んで一方の扉羽根１１を上部金具２０に取付ける。
【００２６】
前記一方の扉羽根１１の開口窓１３の左右中間に上部金具２０の縦板２２が位置し、この開口窓１３の左右一方側部分と縦板２２との間に矩形状の第１の空間部１５を形成し、開口部１３の左右他方側部分と縦板２２との間に矩形状の第２の空間部１６を形成する。
【００２７】
固定用ねじ８２を弛めて第１の空間部１５にドライバー等の工具を挿入して回転することで縦板２２と開口窓１３の左右一端開口縁に接することによって一方の扉羽根１１が上部金具２０に対して図２に示すように左右一方（矢印Ａ方向）に移動する。固定用ねじ８２を弛めて第２の空間部１６に前述と同様の工具を挿入して回転することで縦板２２と開口窓１３の左右他端開口縁に接することによって一方の扉羽根１１が上部金具２０に対して図２に示すように左右他方（矢印Ｂ方向）に移動する。
【００２８】
このようであるから、ドライバー等の工具を片手で持って回転することで一方の扉羽根１１を上部金具２０に対して左右に移動でき、その操作が容易であるから、扉の建付け調整作業が容易である。
【００２９】
また、調整用ねじ８３を締付けると一方の扉羽根１１は縦板２２の開口部２８との接触部を支点として図３に矢印Ｃで示すように扉７０の吊元側端面７１に接近する方向（前後一側方）に揺動し、調整用ねじ８３を弛めると一方の扉羽根１１は図３に矢印Ｄで示すように扉７０の吊元側端面７１と離れる方向（前後他側方）に揺動する。これによって扉羽根１１の上部金具２０への前後取付角度を変えることができる。
【００３０】
前記下部蝶番４０は一方の扉羽根４１と図示しない他方の扉羽根を図示しない軸で揺動自在に連結してある。
前記一方の扉羽根４１の上下寄りに左右方向に長い取付用長孔４２が形成され、上下中間の左右中間に開口窓４３が形成され、上下中間の左右一端寄りに左右方向に長い調整用長孔４４が形成してある。この実施の形態では調整用長孔４４は一方の扉羽根４１の一端面に開口している。つまり、下部蝶番４０の一方の扉羽根４１は上部蝶番１０の一方の扉羽根１１と同一形状である。
【００３１】
前記下部金具５０は横板５１と縦板５２で断面Ｌ字形状で、その横板５１の上下寄りに取付用ねじ孔５３が形成され、上下中間に調整用ねじ孔５４が形成され、上下端近くには孔５５が形成してある。前記横板２１の裏面の一部分に突起、例えばフランジ５６を有するピン５７が設けてある。前記縦板５２に扉羽根挿通用の開口部５８が形成してある。つまり、下部金具５０は上部金具２０と同一形状で突起（ピン５７）の取付け位置が相違する。
【００３２】
前記下部固定ベース６０は矩形板状で、その上下中間には調整用ねじが挿入する孔、例えば左右方向に長い長孔６１が形成してある。下部固定ベース６０の上下寄りに固定用孔６２がそれぞれ形成され、上下端近くに取付用ねじ孔６３がそれぞれ形成してある。下部固定ベース６０における長孔６１を境とした上下寄りには第１穴６４、第２穴６５が形成してあり、第１穴６４は左右他方寄りで、かつ左右一方に向う第１長孔６６が連続して形成してある。この第１長孔６６は第１穴６４の径よりも幅狭である。
前記第２穴６５は左右一方寄りで、かつ左右他方に向う第２長孔６７が連続して形成してある。この第２長孔６７は第２穴６５の径よりも幅狭である。つまり、下部固定ベース６０は上部固定ベース３０と同一形状で、第１穴６４と第２穴６５の位置が左右反対となっている。
【００３３】
前記扉７０の下部凹陥部７３は下部固定ベース６０の平面形状とほぼ同一で、扉７０の表裏面に切欠部７４でそれぞれ開口している。下部凹陥部７３の上下方向中間に調整用ねじが突出する中間凹部７５、ピン５７が突出する上下寄りの凹部７６、取付用ねじが突出する上下端近くの凹部７７がそれぞれ形成してある。前記中間凹部７５、上下寄りの凹部７６は左右方向に長い凹部である。つまり、下部凹陥部７３は上部凹陥部７２と同一形状である。
【００３４】
下部固定ベース６０は扉７０の下部凹陥部７３に挿入され、固定用孔６２から木ネジ８０を扉７０の吊元側端面７１にねじ込んで強固に固定される。これによって、下部固定ベース６０の長孔６１が中間凹部７５に合致し、第１穴６４、第１長孔６６が上方寄りの凹部７６に合致し、第２穴６５、第２長孔６７が下方寄りの凹部７６に合致し、取付用ねじ孔６３が上下端近くの凹部７７に合致する。つまり、下部固定ベース６０は上部固定ベース３０と同様に下部凹陥部７３に取付けられる。
【００３５】
下部金具５０は下部固定ベース６０に重ね合せ、孔５５から取付用ねじ８１を取付用ねじ孔６３にねじ込んで取付けられる。この時下部金具５０のピン５７が第１穴６４又は第２穴６５に嵌まり合う。例えば下部金具５０の縦板５２が扉７０の左側寄りとなるように取付ければピン５７は第２穴６５に嵌まり合う。下部金具５０の縦板５２が扉７０の右側寄りとなるように左右反転して取付けるとピン５７は第１穴６４に嵌まり合う。
【００３６】
すなわち、下部金具５０のピン５７は上下方向中央部よりも他方にずれた位置で、かつ左右中央部よりも一方にずれた位置に形成してあるので、左右反転することでピン５７が第１穴６４、第２穴６５の一方に嵌まり合う。このようであるから下部蝶番４０を左右勝手違いに取付けできる。
【００３７】
また、ピン５７のフランジ５６で下部金具５０を下部固定ベース６０に仮保持できる。
また、下部蝶番４０の一方の扉羽根４１は下部金具５０に上部蝶番１０の一方の扉羽根１１と上部金具２０と同様に固定用ねじ８２、調整用ねじ８３で取付けられるから、一方の扉羽根４１を左右方向に移動したり、前後取付角度を変えることができる。
【００３８】
また、上部金具２０のピン２７と下部金具５０のピン５７は上下方向中央部を境として反対位置であるし、上部固定ベース３０の第１穴３４と下部固定ベース６０の第１穴６４は左右方向に反対位置で、かつ上部固定ベース３０の第２穴３５と下部固定ベース６０の第２穴６５は左右方向に反対であるから、図４のように上部金具２０を下部固定ベース６０に取付けようとするとピン２７（フランジ２６）が下部固定ベース６０の第１穴６４、第２穴６５に嵌まり込まないので取付けできない。図５のように下部金具５０を上部固定ベース３０に取付けようとするとピン５７（フランジ５６）が上部固定ベース３０の第１穴３４、第２穴３５に嵌まり込まないので取付けできない。このことは左右勝手違いに取付ける場合でも同様である。
【００３９】
このようであるから、扉製造工場において扉７０の上部凹陥部７２に上部固定ベース３０、下部凹陥部７３に下部固定ベース６０をそれぞれ誤まりなく正しく取付ける。
施工現場において上部蝶番１０、下部蝶番４０の他方の扉羽根を取付開口枠の上下にそれぞれ取付け、上部蝶番１０の一方の扉羽根１１に上部金具２０をセットし、下部蝶番４０の一方の扉羽根４１に下部金具５０をセットする。
【００４０】
そして、扉７０の上部固定ベース３０に上部金具２０、下部固定ベース６０に下部金具５０を取付けることで、扉７０を誤まって上下反対に取付けることを未然に防止できる。
【００４１】
前記上部金具２０に第１穴３４、第２穴３５を形成し、上部固定ベース３０にピン２７を取付け、下部金具５０に第１穴６４、第２穴６５を形成し、下部固定ベース６０にピン５７を取付けても良い。
【００４２】
【発明の効果】
請求項１に係る発明によれば、扉７０に取付けた金属製の上部固定ベース３０の取付用ねじ孔３３に取付用ねじ８１をねじ込んで上部蝶番１０の一方の扉羽根１１に取付けた上部金具２０を扉７０に取付けるし、扉７０に取付けた金属製の下部固定ベース６０の取付用ねじ孔６３に取付用ねじ８１をねじ込んで下部蝶番４０の一方の扉羽根４１に取付けた下部金具５０を扉７０に取付けるので、上部蝶番１０、下部蝶番４０を扉７０に取付ける取付用ねじ８１を熟練者でなくとも簡単に正しくねじ込むことができる。
これにより、上部蝶番、下部蝶番を扉に簡単で、しかも十分な取付強度として取付けでき、施工が容易である。
【００４３】
また、取付用ねじ８１を１度抜き、再度ねじ込んだ時にも十分に食いつき十分な取付強度が得られる。
これによって、蝶番取替え等しても十分な取付強度で取付けできる。
【００４４】
また、上部金具２０と上部固定ベース３０の一方に設けた突起と下部金具５０の下部固定ベース６０の一方に設けた突起は、上下方向の位置が相違するし、上部金具２０と上部固定ベース３０の他方に形成した第１穴３４、第２穴３５と下部金具５０と下部固定ベース６０の他方に設けた第１穴６４、第２穴６５は、左右方向の位置が相違しているから、上部金具２０を下部固定ベース６０に取付けようとすると突起と第１穴、第２穴が嵌まり合うことがないし、下部金具５０を上部固定ベース３０に取付けようとすると突起と第１穴、第２穴が嵌まり合うことがない。
したがって、上部金具２０を下部固定ベース６０に取付けできないし、下部金具５０を上部固定ベース３０に取付けできない。
これによって、上部蝶番１０、下部蝶番４０を取付開口枠に取付けると共に、この一方の扉羽根１１，４１に上部金具２０、下部金具５０を取付け、扉７０に上部固定ベース３０、下部固定ベース６０を取付けた状態で、扉７０を取付ける時に扉７０を誤まって上下反対に取付けることを未然に防止できる。
【００４５】
また、上部金具２０、下部金具５０を左右反転して取付けできるので、扉７０に上部蝶番１０、下部蝶番４０を左右勝手違いに取付けでき、扉７０を取付開口枠に押し、引き、左右勝手違いに取付けできる。
【００４６】
請求項２に係る発明によれば、フランジを穴に挿入して長孔に沿って左右に移動することで上部金具２０、下部金具５０が上部固定ベース３０、下部固定ベース６０に仮支持されるので、上部金具２０、下部金具５０を手で押えなくとも取付用ねじ８１を取付用ねじ孔３３，６３にねじ込むことができ、その作業が容易である。
【図面の簡単な説明】
【図１】本発明の実施の形態を示す分解斜視図である。
【図２】上部蝶番の取付状態の平面図である。
【図３】図２のＥ−Ｅ断面図である。
【図４】上部金具を下部固定ベースに取付けた状態の平面図である。
【図５】下部金具を上部固定ベースに取付けた状態の平面図である。
【符号の説明】
１０…上部蝶番、１１…一方の扉羽根、２０…上部金具、２５…孔、２６…フランジ、２７…ピン（突起）、３０…上部固定ベース、３３…取付用ねじ孔、３４…第１穴、３５…第２穴、３６…第１長孔、３７…第２長孔、４０…下部蝶番、４１…一方の扉羽根、５０…上部金具、５５…孔、５６…フランジ、５７…ピン（突起）、６０…下部固定ベース、６３…取付用ねじ孔、６４…第１穴、６５…第２穴、６６…第１長孔、６７…第２長孔、７０…扉、７２…上部凹陥部、７３…下部凹陥部、８０…木ねじ、８１…取付用ねじ、８２…固定用ねじ、８３…調整用ねじ。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door hinge for attaching a wooden door to an installation opening frame so as to be freely opened and closed.
[0002]
[Prior art]
The door hinge has an upper hinge and a lower hinge.One door blade of the upper hinge is attached to the upper part of the door, the other door is attached to the upper part of the mounting opening frame, and one door blade of the lower hinge is attached to the lower part of the door and the other. Attach the door blades to the lower part of the mounting frame.
[0003]
[Problems to be solved by the invention]
It is common for a wooden worker to attach a hinge to a wooden door at a construction site by directly attaching a door blade to a door and a mounting screw with a wood screw. When installing with wood screws in this way, the wood screws may be bent and screwed in, or the wood screws may run idle due to high screwing torque, and the installation strength of the hinge may differ depending on the skill of the construction worker, and the weight of the door In order to provide sufficient mounting strength to withstand long-term opening and closing, a skilled construction worker carefully screws a wood screw, which is troublesome to perform.
[0004]
In addition, when the wood screw screwed into the door is removed once due to hinge replacement or the like, and the screw is screwed again to the same place, the wood screw does not bite into the door sufficiently and the mounting strength is low, so it is necessary to screw it into a different place.
Screwing a wood screw into a different place would require changing the position of the hinge, which would be a difficult task.
[0005]
Also, to attach the door to the mounting opening frame, attach the other door blades of the upper hinge and the lower hinge to the mounting opening frame respectively, and hold the door in this state and hang one door blade of the upper hinge and the lower hinge to the door. It is attached to the upper and lower parts of the original end face, respectively.
When the door is mounted in this manner, the door may be erroneously mounted upside down. In such a case, the door is removed and reinstalled, which is troublesome.
[0006]
Then, an object of the present invention is to provide a hinge for a door which can solve the above-mentioned subject.
[0007]
[Means for Solving the Problems]
The first invention is made of a metal having an upper hinge 10, an upper fitting 20 attached to one door blade 11 of the upper hinge 10 and having a hole 25, and a mounting screw hole 33 attached to an upper portion of a door 70. Metal having an upper fixed base 30, a lower hinge 40, a lower fitting 50 attached to one of the door blades 41 of the lower hinge 40 and having a hole 55, and a mounting screw hole 63 attached to a lower portion of the door 70. A lower fixed base 60 made of
The mounting screw 81 is screwed into the mounting screw hole 33 of the upper fixing base 30 from the hole 25 of the upper metal fitting 20 to attach the upper metal fitting 20 to the upper fixing base 30, and the mounting screw 81 is inserted from the hole 55 of the lower metal fitting 50. The lower metal fitting 50 is screwed into the mounting screw hole 63 of the lower fixed base 60 so that the lower metal fitting 50 is mounted on the lower fixed base 60 .
One projection is provided at one of the upper bracket 20 and the upper fixing base 30 at a position shifted from the central portion in the vertical direction and at a position shifted to one side from the left and right central portions, and is fixed to the upper metal member 20 and the upper portion. A first hole 34 is formed on the other side of the base 30 near the upper side and on the left and right side, and a second hole 35 is formed on the lower side and on the other side on the left and right sides. The first hole 35 and the second hole 36 are The upper fitting 20 is configured to be fitted into one of the first hole 35 and the second hole 36 by inverting the upper metal fitting 20 to the right and left with a size that allows the protrusion to be fitted.
One projection is provided at one of the lower metal fitting 50 and the lower fixing base 60 at a position shifted from the center in the vertical direction to the other and at a position shifted from the left and right center to one side, and fixed to the lower metal fitting 50 and the lower fixing base. A first hole 64 is formed on the other side of the base 60 near the upper part and on the left and right side, and a second hole 65 is formed on the lower side and one side on the left and right side. The first hole 64 and the second hole 65 are formed as described above. A hinge for a door, wherein the projection is fitted in one of the first hole 64 and the second hole 65 by turning the lower metal fitting 50 left and right in a size that the projection fits. .
[0008]
According to a second aspect of the present invention, in the first aspect, each of the projections is a pin having a flange, and each of the holes has an elongated hole that is larger than the flange, is smaller than the flange, and is smaller than the flange. Door hinge.
[0011]
[Operation]
According to the first invention, the upper metal fitting 20 attached to the one door blade 11 of the upper hinge 10 by screwing the mounting screw 81 into the mounting screw hole 33 of the metal upper fixed base 30 mounted to the door 70 is attached. The lower metal fitting 50 attached to the door 70 and screwed into the mounting screw hole 63 of the metal lower fixed base 60 attached to the door 70 and attached to one door blade 41 of the lower hinge 40 is attached to the door 70. Therefore, the mounting screws 81 for mounting the upper hinge 10 and the lower hinge 40 to the door 70 can be easily and correctly screwed even by a non-expert.
Thereby, the upper hinge and the lower hinge can be easily attached to the door with sufficient attachment strength, and the construction is easy.
[0012]
Also, when the mounting screw 81 is unscrewed once and screwed again, sufficient biting can be achieved and sufficient mounting strength can be obtained.
As a result, even if the hinge is replaced, it can be mounted with sufficient mounting strength.
[0013]
Also, the protrusions provided on one of the upper fitting 20 and the upper fixed base 30 and the protrusions provided on one of the lower fixed bases 60 of the lower fitting 50 are different in the vertical position, and the upper fitting 20 and the upper fixed base 30 are different. The first hole 34 and the second hole 35 formed in the other of the first and second holes 35 and the first hole 64 and the second hole 65 provided in the other of the lower fitting base 60 and the lower fixing base 60 have different positions in the left-right direction. When the upper fitting 20 is to be attached to the lower fixed base 60, the projection and the first hole and the second hole do not fit together. When the lower fitting 50 is to be attached to the upper fixed base 30, the projection and the first hole and the second hole are not fitted. No two holes fit together.
Therefore, the upper fitting 20 cannot be attached to the lower fixed base 60, and the lower fitting 50 cannot be attached to the upper fixed base 30.
As a result, the upper hinge 10 and the lower hinge 40 are attached to the attachment opening frame, the upper metal fittings 20 and the lower metal fittings 50 are attached to the door blades 11 and 41, and the upper fixed base 30 and the lower fixed base 60 are attached to the door 70. It is possible to prevent the door 70 from being erroneously mounted upside down when the door 70 is mounted in the mounted state.
[0014]
In addition, since the upper bracket 20 and the lower bracket 50 can be inverted right and left and attached, the upper hinge 10 and the lower hinge 40 can be attached to the door 70 with different right and left. Can be mounted on
[0015]
According to the second invention , the upper metal fitting 20 and the lower metal fitting 50 are temporarily supported by the upper fixed base 30 and the lower fixed base 60 by inserting the flange into the hole and moving left and right along the elongated hole. The mounting screw 81 can be screwed into the mounting screw holes 33, 63 without manually pressing the upper metal fitting 20 and the lower metal fitting 50, and the work is easy.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, a hinge for a door is formed by an upper hinge 10, an upper fitting 20, a metal upper fixing base 30, and a lower hinge 40, a lower fitting 50, and a metal lower fixing base 60. The door 70 is a wooden door, in which an upper concave portion 72 is formed near an upper end of a hanging side end surface 71 and a lower concave portion 73 is formed near a lower portion.
[0017]
The upper hinge 10 has one door blade 11 and the other door blade (not shown) swingably connected to each other by a shaft (not shown).
An elongate mounting hole 12 is formed in the left and right direction near the upper and lower sides of the one door blade 11, an opening window 13 is formed in the left and right middle of the upper and lower middle, and an adjustment length is formed in the left and right direction near the left and right ends of the upper and lower middle. A hole 14 is formed. In this embodiment, the adjustment slot 14 is open at one end face of one of the door blades 11.
[0018]
The upper bracket 20 has a horizontal plate 21 and a vertical plate 22 and has an L-shaped cross section. A mounting screw hole 23 is formed near the upper and lower sides of the horizontal plate 21, and an adjusting screw hole 24 is formed in the middle between the upper and lower sides. A hole 25 is formed nearby. A protrusion, for example, a pin 27 having a flange 26 is provided on a part of the back surface of the horizontal plate 21. The vertical plate 22 has an opening 28 for inserting a door blade.
[0019]
The upper fixing base 30 has a rectangular plate shape, and a hole into which an adjusting screw is inserted, for example, a long hole 31 long in the left-right direction is formed in the upper and lower middle. A fixing hole 32 is formed near the top and bottom of the upper fixing base 30, and a mounting screw hole 33 is formed near the upper and lower ends. A first hole 34 and a second hole 35 are formed in the upper fixed base 30 at the upper and lower sides of the elongated hole 31 as a boundary. 36 are formed continuously. This first elongated hole 36 is narrower than the diameter of the first hole 34.
The second hole 35 is formed with a second elongated hole 37 which is located on the other side of the left and right sides and is directed to one of the left and right sides. This second long hole 37 is narrower than the diameter of the second hole 35.
[0020]
The upper concave portion 72 of the door 70 has substantially the same planar shape as the upper fixed base 30, and is opened at the front and back surfaces of the door 70 by cutouts 74. An intermediate concave portion 75 from which the adjusting screw protrudes, an upper concave portion 76 from which the pin 27 protrudes, and a concave portion 77 near the upper and lower ends from which the mounting screw protrudes are formed at the middle of the upper concave portion 72 in the vertical direction. The intermediate concave portion 75 and the concave portion 76 closer to the top and bottom are concave portions that are long in the left-right direction.
[0021]
The upper fixing base 30 is inserted into the upper concave portion 72 of the door 70, and a wooden screw 80 is screwed into the hanging side end surface 71 of the door 70 from the fixing hole 32 to be firmly fixed. Thereby, the long hole 31 of the upper fixed base 30 matches the middle concave portion 75, the first hole 34 and the first long hole 36 match the concave portion 76 on the upper side, and the second hole 35 and the second long hole 37 match. The mounting screw hole 33 matches the concave portion 77 near the upper and lower ends.
[0022]
The upper fitting 20 is attached to the upper fixing base 30 by screwing a mounting screw 81 from the hole 25 into the mounting screw hole 33. At this time, the pin 27 of the upper metal fitting 20 is fitted into the first hole 34 or the second hole 35. For example, if the vertical plate 22 of the upper bracket 20 is mounted so as to be closer to the left side of the door 70, the pin 27 fits into the first hole 34. If the vertical plate 22 of the upper metal fitting 20 is mounted to be inverted right and left so as to be closer to the right side of the door 70, the pin 27 fits into the second hole 35.
[0023]
That is, since the pin 27 of the upper bracket 20 is formed at a position deviated to one side from the center in the vertical direction and at a position deviated to one side from the center at the left and right, the pin 27 is turned left and right to make the first It fits into one of the hole 34 and the second hole 35. Because of this, the upper hinge 10 can be attached to the left and right sides.
[0024]
When the pin 27 is fitted into the first hole 34 or the second hole 35, the flange 26 projects beyond the first hole 34 and the second hole 35, and the pin 27 is inserted into the first long hole 36 and the second long hole 37. The upper bracket 20 is temporarily supported so as to be in contact with the back surface of the upper fixed base 30 by being slightly moved in the left-right direction so as not to come off. That is, the first hole 34 and the second hole 35 have a slightly larger diameter than the flange 26, and the width of the first long hole 36 and the second long hole 37 is larger than the diameter of the pin 27 and smaller than the diameter of the flange 26. .
[0025]
One door blade 11 of the upper hinge 10 is slidably inserted into the opening 28 for inserting the door blade so that the door hinge 11 can swing back and forth around a portion contacting the opening 28 as a fulcrum. Supported. A fixing screw 82 is screwed into the fixing screw hole 23 from the fixing long hole 12, and an adjusting screw 83 is screwed into the adjusting screw hole 24 from the adjusting long hole 14 to attach one door blade 11 to the upper bracket 20. .
[0026]
A vertical plate 22 of the upper fitting 20 is located at the left and right middle of the opening window 13 of the one door blade 11, and a rectangular first space portion is provided between the left and right side portions of the opening window 13 and the vertical plate 22. 15 is formed, and a second rectangular space 16 is formed between the left and right sides of the opening 13 and the vertical plate 22.
[0027]
By loosening the fixing screw 82 and inserting a tool such as a screwdriver into the first space portion 15 and rotating the first space portion 15, one of the door blades 11 is brought into contact with the vertical plate 22 and the opening edge of one of the left and right ends of the opening window 13. As shown in FIG. 2, the bracket 20 moves to the left or right (in the direction of arrow A) with respect to the bracket 20. By loosening the fixing screw 82 and inserting the same tool as described above into the second space 16 and rotating it, it comes into contact with the vertical plate 22 and the opening edges of the left and right ends of the opening window 13 so that one of the door blades 11 Move to the left and right (in the direction of arrow B) with respect to the upper bracket 20 as shown in FIG.
[0028]
As described above, one of the door blades 11 can be moved right and left with respect to the upper bracket 20 by rotating a tool such as a driver with one hand, and the operation is easy. Is easy.
[0029]
When the adjusting screw 83 is tightened, the one door blade 11 approaches the hanging side end surface 71 of the door 70 as shown by the arrow C in FIG. 3 with the contact portion of the vertical plate 22 in contact with the opening 28 as a fulcrum. When one of the door blades 11 swings (one side in the front and rear direction) and the adjusting screw 83 is loosened, one door blade 11 is separated from the hanging side end surface 71 of the door 70 as shown by an arrow D in FIG. Rocks. Thereby, the front and rear mounting angles of the door blade 11 to the upper bracket 20 can be changed.
[0030]
The lower hinge 40 has one door blade 41 and the other door blade (not shown) swingably connected to each other by a shaft (not shown).
An elongate mounting hole 42 is formed in the left and right direction near the upper and lower sides of the one door blade 41, an opening window 43 is formed in the left and right middle of the upper and lower middle, and an adjusting length is formed in the left and right direction near the left and right ends of the upper and lower middles. A hole 44 is formed. In this embodiment, the adjusting long hole 44 is opened at one end surface of one door blade 41. That is, one door blade 41 of the lower hinge 40 has the same shape as one door blade 11 of the upper hinge 10.
[0031]
The lower metal fitting 50 has an L-shaped cross section with a horizontal plate 51 and a vertical plate 52, a mounting screw hole 53 is formed near the upper and lower sides of the horizontal plate 51, an adjusting screw hole 54 is formed in the middle between the upper and lower sides, and the upper and lower ends A hole 55 is formed nearby. A projection, for example, a pin 57 having a flange 56 is provided on a part of the rear surface of the horizontal plate 21. The vertical plate 52 has an opening 58 for inserting a door blade. That is, the lower metal fitting 50 has the same shape as the upper metal fitting 20, and the mounting position of the projection (pin 57) is different.
[0032]
The lower fixing base 60 has a rectangular plate shape, and a hole into which an adjusting screw is inserted, for example, a long hole 61 long in the left-right direction is formed in the middle between the upper and lower sides. The fixing holes 62 are formed near the upper and lower ends of the lower fixing base 60, and the mounting screw holes 63 are formed near the upper and lower ends, respectively. A first hole 64 and a second hole 65 are formed in the lower fixed base 60 near the upper and lower sides of the long hole 61, and the first hole 64 is a first long hole that is closer to the other side of the left and right and faces one of the left and right sides. 66 are formed continuously. This first elongated hole 66 is narrower than the diameter of the first hole 64.
The second hole 65 is formed with a second elongate hole 67 extending leftward and rightward and facing the other side. This second long hole 67 is narrower than the diameter of the second hole 65. That is, the lower fixed base 60 has the same shape as the upper fixed base 30, and the positions of the first hole 64 and the second hole 65 are opposite to each other.
[0033]
The lower concave portion 73 of the door 70 has substantially the same planar shape as the lower fixed base 60, and is opened at the front and back surfaces of the door 70 with cutouts 74, respectively. An intermediate concave portion 75 from which the adjusting screw protrudes, an upper concave portion 76 from which the pin 57 protrudes, and a concave portion 77 near the upper and lower ends from which the mounting screw protrudes are formed at the middle of the lower concave portion 73 in the vertical direction. The intermediate concave portion 75 and the concave portion 76 closer to the top and bottom are concave portions that are long in the left-right direction. That is, the lower recess 73 has the same shape as the upper recess 72.
[0034]
The lower fixing base 60 is inserted into the lower recessed portion 73 of the door 70, and a wood screw 80 is screwed into the hanging end face 71 of the door 70 from the fixing hole 62 to be fixed firmly. As a result, the long hole 61 of the lower fixed base 60 matches the intermediate concave portion 75, the first hole 64 and the first long hole 66 match the concave portion 76 on the upper side, and the second hole 65 and the second long hole 67 match. The mounting screw hole 63 matches the concave portion 77 near the upper and lower ends. That is, the lower fixed base 60 is attached to the lower recessed portion 73 similarly to the upper fixed base 30.
[0035]
The lower metal fitting 50 is mounted on the lower fixing base 60 by screwing the mounting screw 81 into the mounting screw hole 63 from the hole 55. At this time, the pin 57 of the lower metal fitting 50 is fitted into the first hole 64 or the second hole 65. For example, if the vertical plate 52 of the lower metal fitting 50 is mounted so as to be closer to the left side of the door 70, the pin 57 fits into the second hole 65. If the vertical plate 52 of the lower metal fitting 50 is mounted left and right inverted so as to be closer to the right side of the door 70, the pin 57 fits into the first hole 64.
[0036]
That is, since the pin 57 of the lower metal fitting 50 is formed at a position shifted from the center in the vertical direction to the other and at a position shifted to one side from the center at the left and right, the pin 57 is turned left and right to make the first It fits into one of the hole 64 and the second hole 65. Because of this, the lower hinge 40 can be attached to the left and right sides.
[0037]
Further, the lower metal fitting 50 can be temporarily held on the lower fixed base 60 by the flange 56 of the pin 57.
Further, one door blade 41 of the lower hinge 40 is attached to the lower metal fitting 50 with the fixing screw 82 and the adjusting screw 83 in the same manner as the one door blade 11 of the upper hinge 10 and the upper metal fitting 20, so that one door blade is provided. 41 can be moved in the left-right direction, and the front-rear mounting angle can be changed.
[0038]
The pin 27 of the upper bracket 20 and the pin 57 of the lower bracket 50 are at opposite positions with respect to the vertical center, and the first hole 34 of the upper fixed base 30 and the first hole 64 of the lower fixed base 60 are left and right. Since the second hole 35 of the upper fixed base 30 and the second hole 65 of the lower fixed base 60 are opposite to each other in the left-right direction, the upper bracket 20 is attached to the lower fixed base 60 as shown in FIG. If this is attempted, the pin 27 (flange 26) will not fit in the first hole 64 and the second hole 65 of the lower fixed base 60, so that it cannot be mounted. When the lower metal fitting 50 is to be mounted on the upper fixed base 30 as shown in FIG. 5, the pin 57 (flange 56) cannot be mounted because the pin 57 (flange 56) does not fit into the first hole 34 and the second hole 35 of the upper fixed base 30. This is the same even when the mounting is performed in a right and left manner.
[0039]
As a result, the upper fixed base 30 and the lower fixed base 60 are correctly and correctly mounted in the upper concave portion 72 and the lower concave portion 73 of the door 70 at the door manufacturing plant, respectively.
At the construction site, the other door blades of the upper hinge 10 and the lower hinge 40 are respectively attached to the upper and lower sides of the mounting opening frame, the upper bracket 20 is set on the one door blade 11 of the upper hinge 10, and one door blade of the lower hinge 40 is installed. The lower bracket 50 is set on 41.
[0040]
By mounting the upper bracket 20 on the upper fixed base 30 of the door 70 and the lower bracket 50 on the lower fixed base 60, it is possible to prevent the door 70 from being erroneously mounted upside down.
[0041]
A first hole 34 and a second hole 35 are formed in the upper metal fitting 20, a pin 27 is attached to the upper fixing base 30, a first hole 64 and a second hole 65 are formed in the lower metal fitting 50, and a lower fixing base 60 is formed. A pin 57 may be attached.
[0042]
【The invention's effect】
According to the first aspect of the present invention, the upper bracket is attached to one of the door blades 11 of the upper hinge 10 by screwing the mounting screw 81 into the mounting screw hole 33 of the metal upper fixed base 30 mounted to the door 70. 20 is attached to the door 70, and the mounting screw 81 is screwed into the mounting screw hole 63 of the metal lower fixed base 60 attached to the door 70, and the lower metal fitting 50 attached to one door blade 41 of the lower hinge 40 is attached. Since the upper hinge 10 and the lower hinge 40 are attached to the door 70, the attachment screws 81 for attaching the upper hinge 10 and the lower hinge 40 to the door 70 can be easily and correctly screwed even by a non-expert.
Thereby, the upper hinge and the lower hinge can be easily attached to the door with sufficient attachment strength, and the construction is easy.
[0043]
Also, when the mounting screw 81 is unscrewed once and screwed again, sufficient biting can be achieved and sufficient mounting strength can be obtained.
As a result, even if the hinge is replaced, it can be mounted with sufficient mounting strength.
[0044]
Also, the protrusions provided on one of the upper fitting 20 and the upper fixed base 30 and the protrusions provided on one of the lower fixed bases 60 of the lower fitting 50 are different in the vertical position, and the upper fitting 20 and the upper fixed base 30 are different. The first hole 34 and the second hole 35 formed in the other of the first and second holes 35 and the first hole 64 and the second hole 65 provided in the other of the lower fitting base 60 and the lower fixing base 60 have different positions in the left-right direction. When the upper fitting 20 is to be attached to the lower fixed base 60, the projection and the first hole and the second hole do not fit together. When the lower fitting 50 is to be attached to the upper fixed base 30, the projection and the first hole and the second hole are not fitted. No two holes fit together.
Therefore, the upper fitting 20 cannot be attached to the lower fixed base 60, and the lower fitting 50 cannot be attached to the upper fixed base 30.
As a result, the upper hinge 10 and the lower hinge 40 are attached to the attachment opening frame, the upper metal fittings 20 and the lower metal fittings 50 are attached to the door blades 11 and 41, and the upper fixed base 30 and the lower fixed base 60 are attached to the door 70. It is possible to prevent the door 70 from being erroneously mounted upside down when the door 70 is mounted in the mounted state.
[0045]
In addition, since the upper bracket 20 and the lower bracket 50 can be inverted right and left and attached, the upper hinge 10 and the lower hinge 40 can be attached to the door 70 with different right and left. Can be mounted on
[0046]
According to the second aspect of the present invention , the upper metal fitting 20 and the lower metal fitting 50 are temporarily supported by the upper fixed base 30 and the lower fixed base 60 by inserting the flange into the hole and moving left and right along the elongated hole. Therefore, the mounting screw 81 can be screwed into the mounting screw holes 33 and 63 without manually pressing the upper metal fitting 20 and the lower metal fitting 50, and the work is easy.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is a plan view showing a state in which an upper hinge is attached.
FIG. 3 is a sectional view taken along line EE of FIG. 2;
FIG. 4 is a plan view showing a state in which an upper fitting is attached to a lower fixing base.
FIG. 5 is a plan view showing a state in which a lower metal fitting is attached to an upper fixing base.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Upper hinge, 11 ... One door blade, 20 ... Upper bracket, 25 ... Hole, 26 ... Flange, 27 ... Pin (projection), 30 ... Upper fixed base, 33 ... Mounting screw hole, 34 ... 1st hole , 35 ... second hole, 36 ... first long hole, 37 ... second long hole, 40 ... lower hinge, 41 ... one door blade, 50 ... upper metal fitting, 55 ... hole, 56 ... flange, 57 ... pin ( Projection), 60: Lower fixed base, 63: Screw hole for mounting, 64: First hole, 65: Second hole, 66: First elongated hole, 67: Second elongated hole, 70: Door, 72: Upper recess Reference numeral 73: lower recessed portion, 80: wood screw, 81: mounting screw, 82: fixing screw, 83: adjusting screw.

Claims

An upper hinge 20, an upper fitting 20 attached to one of the door blades 11 of the upper hinge 10 and having a hole 25, and a metal upper fixed base 30 attached to an upper portion of the door 70 and having a mounting screw hole 33. , A lower hinge 50 attached to one of the door blades 41 of the lower hinge 40 and having a hole 55, and a metal lower fixing base 60 attached to a lower portion of the door 70 and having a mounting screw hole 63. With
The mounting screw 81 is screwed into the mounting screw hole 33 of the upper fixing base 30 from the hole 25 of the upper metal fitting 20 to attach the upper metal fitting 20 to the upper fixing base 30, and the mounting screw 81 is inserted from the hole 55 of the lower metal fitting 50. The lower metal fitting 50 is screwed into the mounting screw hole 63 of the lower fixed base 60 so that the lower metal fitting 50 is mounted on the lower fixed base 60 .
One projection is provided at one of the upper bracket 20 and the upper fixing base 30 at a position shifted from the central portion in the vertical direction and at a position shifted to one side from the left and right central portions, and is fixed to the upper metal member 20 and the upper portion. A first hole 34 is formed on the other side of the base 30 near the upper side and on the left and right side, and a second hole 35 is formed on the lower side and on the other side on the left and right sides. The first hole 35 and the second hole 36 are The upper fitting 20 is configured to be fitted into one of the first hole 35 and the second hole 36 by inverting the upper metal fitting 20 to the right and left with a size that allows the protrusion to be fitted.
One projection is provided at one of the lower metal fitting 50 and the lower fixing base 60 at a position shifted from the center in the vertical direction to the other and at a position shifted from the left and right center to one side, and fixed to the lower metal fitting 50 and the lower fixing base. A first hole 64 is formed on the other side of the base 60 near the upper part and on the left and right side, and a second hole 65 is formed on the lower side and one side on the left and right side. The first hole 64 and the second hole 65 are formed as described above. A hinge for a door, wherein the projection is fitted in one of the first hole 64 and the second hole 65 by reversing the lower metal fitting 50 to the right and left in a size to fit the projection.

2. The door hinge according to claim 1, wherein each of the projections is a pin having a flange, and each of the holes has an elongated hole which is larger than the flange and is smaller than the flange and is larger than the pin.