JP3718733B2

JP3718733B2 - Opening and closing device for lid in case

Info

Publication number: JP3718733B2
Application number: JP11686495A
Authority: JP
Inventors: 裕樹小笠原; 次男深沢
Original assignee: Showa Denko KK
Current assignee: Showa Denko KK
Priority date: 1995-05-16
Filing date: 1995-05-16
Publication date: 2005-11-24
Anticipated expiration: 2020-11-24
Also published as: JPH08312228A

Description

【０００１】
【産業上の利用分野】
この発明は、ケースにおける蓋の開閉装置に関する。
【０００２】
【従来の技術】
従来、ケースに外開き式の蓋を取り付けるには、鋼製蝶番が使用されていた。またとくに外観上の凹凸を嫌う場合には、いわゆる通し蝶番を使用していた。そして、これらの蝶番をケース本体あるいは蓋に取り付ける方法としては、ボルト等の固定具を使用する場合と、溶接による場合とがあった。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の前者のボルト等の固定具を使用する方法によれば、蝶番の取付作業に非常に手間がかかり、また後者の溶接による方法によれば、溶接機等の設備を必要とするとともに、高度な溶接技能が必要であり、これらいずれの場合も工数も多くかかるため、製造コストが高くつくという問題があった。また通常、複数の蝶番を使用するので、上記の従来法によれば、いずれの場合も蝶番の回転芯をそろえて、取付精度を出すのが非常に難しく、かつ部品点数が多いために管理が面倒であった。また外観を良くするために、目隠しや塗装など、余分な工数が必要となり、そのうえ、蝶番は鋼製で、個々の重量が重いため、ケース全体の重量が増大するとともに、鋼製蝶番は長期の使用により錆が発生するという問題があった。さらに溶接により蝶番を取り付けた場合には、ケースの構成パネルの外表面板を破損したときの修理にも非常に手間がかかるという問題があった。
【０００４】
この発明の目的は、上記の従来技術の問題を解決し、ケースの蓋の揺動兼取付機構を簡素化し、従来の鋼製蝶番の取付けが全く不要で、蓋の取付工数を削減することができて、取付け作業に手間がかからず、製作コストが安くつき、かつ部品点数が少ないために管理が容易であり、また蓋の全閉時に、蓋の取付部分の外面に凹凸のない円滑な外観を得ることができ、また蓋の取付精度が非常に高く、蓋の開閉をスムーズに行なうことができるとともに、錆の発生がなく、かつ軽量化を果たし得、しかもケース構成パネルの外表面板を破損したときも、修理を簡単に行なうことができる、ケースにおける蓋の開閉装置を提供しようとするにある。
【０００５】
【課題を解決するための手段】
この発明は、上記の目的を達成するために、まず請求項１記載の発明は、ケースの開口部後縁の後壁パネル側枠部材に第１ヒンジ構成部が設けられ、ケースの開口部を覆う蓋の後縁部の側枠部材に第２ヒンジ構成部が設けられ、後壁パネル側枠部材の第１ヒンジ構成部が、該側枠部材より前方にのびる前方張出部と、前方張出部の内側に対向して設けられかつ断面円弧形の案内面を有する案内部とによって構成されて、第１ヒンジ構成部に、前方に向かって開口した開口部を有する第２ヒンジ構成部嵌込み用凹部が形成され、かつ前方張出部の基部寄りに嵌合凸部が設けられるとともに、前方張出部の先端寄り部分の内側に段状凸部が設けられて、段状凸部の後側に断面凹弧状の案内面が設けられ、蓋側枠部材の第２ヒンジ構成部が、後方にのびかつ内側面が断面円弧形の凸面部となされた後方張出部と、後方張出部の先端寄り部分から外方に突出しかつ先端に断面円弧形の端面を有する外方凸部とによって構成されて、第２ヒンジ構成部に、外方に向かって開口した開口部を有する第１ヒンジ構成部一部嵌込み用凹部が設けられるとともに、外方凸部の基部より後方張出部の先端部に至る嵌合凹部が設けられており、ケースの開口部後縁のパネル側枠部材の第１ヒンジ構成部の嵌込み用凹部に、蓋後縁部の側枠部材の第２ヒンジ構成部が嵌め合わせられて、蓋がケース開口部を覆う水平状態にあるときには、第１ヒンジ構成部の凹部内において、第２ヒンジ構成部の後方張出部の凸面部が案内部の断面円弧形の案内面に沿うように当接せしめられるとともに、案内部の基部寄りの嵌合凸部が第２ヒンジ構成部側の嵌合凹部に嵌め入れられ、かつ外方凸部先端の断面円弧形の端面が、第１ヒンジ構成部側の段状凸部に係り合わせられ、ケースの蓋が外側に開くさいには、蓋側枠部材の第２ヒンジ構成部の後方張出部の凸面部が、後壁パネル側枠部材の案内部の案内面に沿って移動するとともに、蓋が、第２ヒンジ構成部の外方凸部の先端を中心として揺動するようになされ、後壁パネル側枠部材 (11) の第１ヒンジ構成部 (12) の断面円弧形の案内面 (14a) を有する案内部 (14) に、これを前方に延長する短い突出部 (20) が設けられていて、該第１ヒンジ構成部 (12) の凹部 (19) の開口部 (18) の幅が、第２ヒンジ構成部 (22) の後方張出部 (23) の先端から外方凸部 (26) の先端までの幅より狭いものとなされており、後壁パネル側枠部材 (11) の第１ヒンジ構成部 (12) の嵌込み用凹部 (19) 内に嵌め入れられた蓋 (3) 側の第２ヒンジ構成部 (22) は、該凹部 (19) より脱出することができず、蓋 (3) はケース (1) より外れないようになされている、ケースにおける蓋の開閉装置を要旨としている。
【０００６】
つぎに、請求項２記載の発明は、ケースの開口部後縁の後壁パネル側枠部材の上縁部に、上方に開口した凹部を有する第１ヒンジ構成部が設けられ、凹部の前壁部の上縁部に後方にのびる係合部が設けられ、該凹部内に開口後側縁より前壁部の基部に至る横断面円弧状の案内面が設けられ、ケースの開口部を覆う蓋後縁部の側枠部材の後端部外側に、後方斜め内向きに曲がった横断面略円弧状の屈曲部と、これの先端部より前向きに折り返えされた折返し状係合部とを有する第２ヒンジ構成部が設けられ、蓋の第２ヒンジ構成部の前向き折返し状係合部が後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れられて、蓋がケース開口部を覆う水平状態にあるときには、前向き折返し状係合部が凹部の開口前側縁部の係合部に係り合わせられ、ケースの蓋が外側に開くさいには、蓋側枠部材の第２ヒンジ構成部の先端が凹部内の横断面円弧状の案内面に案内されるようになされている、ケースにおける蓋の開閉装置を要旨としている。
【０００７】
つぎに、請求項３記載の発明は、ケースの開口部後縁の後壁パネル側枠部材に第１ヒンジ構成部が設けられ、ケースの開口部を覆う蓋の後縁部の側枠部材に第２ヒンジ構成部が設けられ、後壁パネル側枠部材の第１ヒンジ構成部が、該側枠部材より前方にのびる前方張出部と、前方張出部の内側に対向して設けられかつ断面円弧形の案内面を有する案内部とによって構成されて、第１ヒンジ構成部に、前方に向かって開口した開口部を有する第２ヒンジ構成部嵌込み用凹部が形成され、かつ前方張出部の先端寄り部分の内側に段状凸部が設けられて、段状凸部の後側に断面凹弧状の案内面が設けられ、蓋側枠部材の第２ヒンジ構成部が、後方にのびかつ内側面が断面円弧形の凸面部となされた後方張出部と、後方張出部の先端寄り部分から外方に突出しかつ先端に断面円弧形の端面を有する外方凸部とによって構成されて、第２ヒンジ構成部に、外方に向かって開口した開口部を有する第１ヒンジ構成部一部嵌込み用凹部が設けられており、第１ヒンジ構成部の開口部が、第２ヒンジ構成部の後方張出部の先端から外方凸部の先端までの幅と同じ幅か、または若干広い幅を有していて、第２ヒンジ構成部の後方張出部および外方凸部が第１ヒンジ構成部の開口部より出入れ自在となされており、ケースの開口部後縁のパネル側枠部材の第１ヒンジ構成部の嵌込み用凹部に、蓋後縁部の側枠部材の第２ヒンジ構成部が嵌め合わせられて、蓋がケース開口部を覆う水平状態にあるときには、第１ヒンジ構成部の凹部内において、第２ヒンジ構成部の後方張出部の凸面部が案内部の断面円弧形の案内面に沿うように当接せしめられるとともに、外方凸部先端の断面円弧形の端面が、第１ヒンジ構成部側の段状凸部に係り合わせられ、ケースの蓋が外側に開くさいには、蓋側枠部材の第２ヒンジ構成部の後方張出部の凸面部が、後壁パネル側枠部材の案内部の案内面に沿って移動するとともに、蓋が、第２ヒンジ構成部の外方凸部の先端を中心として揺動するようになされ、必要に応じて、蓋の揺動後に、蓋側枠部材の第２ヒンジ構成部が、第１ヒンジ構成部の凹部の開口部より前方に脱出せしめられることにより、蓋が取外し可能となされている、ケースにおける蓋の開閉装置を要旨としている。
【０００８】
【作用】
上記において、請求項１記載のケースにおける蓋の開閉装置によれば、ケースの後壁パネル側枠部材に、蓋を取り付けるには、後壁パネル側枠部材の第１ヒンジ構成部の凹部に、蓋後縁部の側枠部材の第２ヒンジ構成部を、これの一端からスライドさせながら嵌め合わせ、側枠部材の第１ヒンジ構成部の凹部内に、蓋の第２ヒンジ構成部を嵌め入れれば良い。
【０００９】
これによって蓋の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００１０】
また、蓋の側枠部材の第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れて、外方凸部先端の断面円弧形の端面を、第１ヒンジ構成部側の段状凸部に係り合わせるだけで、蓋側の第２ヒンジ構成部の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋の開閉がスムーズである。
【００１１】
また、第１ヒンジ構成部の前方張出部の基部寄りに嵌合凸部が設けられるとともに、第２ヒンジ構成部の外方凸部の基部より案内部の先端部に至る嵌合凹部が設けられていて、蓋が水平状態にあるときには、第１ヒンジ構成部の凹部内において、第１ヒンジ構成部の案内部の基部寄りの嵌合凸部が第２ヒンジ構成部側の嵌合凹部に嵌め入れられているから、後壁パネル側枠部材側の第１ヒンジ構成部と、蓋側の第２ヒンジ構成部との引っ掛かり部分（係合部分）が大きいので、結合強度が充分に大きいものである。
【００１２】
そして、例えば上記ケースに、物品を入れる場合、水平状態の閉じている蓋を外側に開くと、蓋側枠部材の第２ヒンジ構成部の後方張出部の凸面部が、後壁パネル側枠部材の第１ヒンジ構成部側の案内部の案内面に沿って移動するとともに、蓋が、第２ヒンジ構成部の外方凸部の先端を中心として、さらに詳しくは外方凸部先端の断面円弧形の端面の中心点Ａを中心として揺動し、蓋が後壁パネル側枠部材に対し回転して、ケースの外側に開かれ、物品をケース内に入れることができるものである。またこのとき、蓋の開閉は非常にスムーズである。
【００１３】
また、上記請求項２記載の発明において、ケースの後壁パネル側枠部材に、蓋を取り付けるには、上記請求項１記載の発明の場合と同様に、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に、蓋後縁部の側枠部材の第２ヒンジ構成部の前向き折返し状係合部を、これの一端からスライドさせながら嵌め入れれば良い。これによって蓋の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００１４】
また、このように蓋の第２ヒンジ構成部の前向き折返し状係合部を、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れて、前向き折返し状係合部を凹部の開口前側縁部の係合部に係り合わせるだけで、蓋側の第２ヒンジ構成部の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋の開閉がスムーズである。
【００１５】
そして、上記ケースに、物品を入れる場合、水平状態の閉じている蓋を外側に開くと、蓋が、蓋側枠部材の第２ヒンジ構成部先端の前向き折返し状係合部の前端部を中心として回動するようにして、かつ該第２ヒンジ構成部の先端が、第１ヒンジ構成部の凹部内の横断面円弧状の案内面に案内されて、蓋がケースの外側に開かれ、物品をケース内に入れることができるものである。
【００１６】
また、上記請求項２記載のケースにおける蓋の開閉装置によれば、上記請求項１記載の発明の場合と同様に、ケースの蓋の揺動兼取付機構が簡素化されており、ケースの開口部後縁の後壁パネル側枠部材および蓋後縁部の側枠部材を、共に例えばアルミニウム等の金属あるいは合成樹脂の押出形材製とすることにより、軽量化を果たし得るとともに、錆の発生がない。さらに蓋の取付部分の外面に凹凸のない円滑な外観を得ることができ、蓋の取付け部分の美観を向上し得る。
【００１７】
さらに上記請求項３記載のケースにおける蓋の開閉装置によれば、第１ヒンジ構成部の開口部が、第２ヒンジ構成部の後方張出部の先端から外方凸部の先端までの幅と同じ幅か、または若干広い幅を有していて、第２ヒンジ構成部の後方張出部および外方凸部が、第１ヒンジ構成部の開口部より出入れ自在となされている。
【００１８】
従って、ケースの後壁パネル側枠部材に、蓋を取り付けるには、ケースの上面側に、蓋を配置し、これの第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の嵌込み用凹部内に、前方より嵌め入れれば良く、これによって蓋の取付けをケースの上面側より簡単に行なうことができて、取付工数を大幅に削減することができる。
【００１９】
また、蓋の側枠部材の第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れて、外方凸部先端の断面円弧形の端面を、第１ヒンジ構成部側の段状凸部に係り合わせるだけで、蓋側の第２ヒンジ構成部の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋の開閉がスムーズである。
【００２０】
そして、上記ケースに、物品を入れる場合、水平状態の閉じている蓋を外側に開くと、蓋が後壁パネル側枠部材に対し回転して、ケースの外側に開かれ、物品をケース内に入れることができるものである。またこのときの蓋の開閉は非常にスムーズである。
【００２１】
また、蓋の揺動後、必要に応じて、その第２ヒンジ構成部を、嵌込み用凹部の開口部より前方に脱出せしめることにより、蓋を取り外すことができるので、例えば補修や洗浄のさい蓋の取外しおよび取付け作業が容易であり、ケースの取扱いが容易であるとともに、例えケース構成パネルの外表面板が破損したときにも、修理を簡単に行なうことができる。
【００２２】
なお、上記のように、ケースの蓋の揺動兼取付機構が簡素化され、従来の鋼製蝶番を使用することなく、ケースの開口部後縁の後壁パネル側枠部材および蓋後縁部の側枠部材を、共に例えばアルミニウム等の金属あるいは合成樹脂の押出形材製とすることにより、軽量化を果たし得るとともに、錆の発生がない。さらに従来の鋼製蝶番を使用しないので、蓋の取付部分の外面に凹凸のない円滑な外観を得ることができ、蓋の取付け部分の美観を向上し得る。
【００２３】
【実施例】
つぎに、この発明の実施例を図面に基づいて説明する。
【００２４】
この明細書において、前後、左右は図２を基準とし、前とは図２の左側、後とは同右側をいい、また左右は後方に向かっていうものとする。また、内とはケースの内側を、外とは同外側をいうものとする。
【００２５】
図１〜図４は、この発明の第１実施例を示すものである。
【００２６】
まず図１において、ケース(1) の上面に開口部(2) が設けられていて、この開口部(2) 後縁に蓋(3) が上下方向に揺動自在に取り付けられている。
【００２７】
図２に示すように、蓋(3) は、ケース(1) の開口部(2) 後縁の後壁パネル(10)の側枠部材(11)に設けられた第１ヒンジ構成部(12)と、蓋(3) の後縁部の側枠部材(21)に設けられた第２ヒンジ構成部(22)との組合わせによって構成されたヒンジ部(7) を介してケース(1) に取り付けられている。
【００２８】
ケース(1) の蓋(3) および後壁パネル(10)は、いずれも断熱パネルよりなる芯材(6) の内外両面にアルミニウム製の表面板(4)(5)が張り合わせられ、その側縁部にアルミニウム中空押出形材製の側枠部材が取り付けられたものである。
【００２９】
ここで、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)は、該側枠部材(11)より前方にのびる前方張出部(13)と、前方張出部(13)の内側に対向して設けられかつ断面円弧形の案内面(14a) を有する案内部(14)とによって構成されて、第１ヒンジ構成部(12)に、前方に向かって開口した開口部(18)を有する第２ヒンジ構成部嵌込み用凹部(19)が形成され、かつ前方張出部(13)の基部寄りに嵌合凸部(15)が設けられるとともに、前方張出部(13)の先端寄り部分の内側に段状凸部(16)が設けられて、段状凸部(16)の後側に断面凹弧状の案内面(17)が設けられている。
【００３０】
一方、蓋(3) 後縁部の側枠部材(21)の第２ヒンジ構成部(22)が、後方にのびかつ内側面が断面円弧形の凸面部(24)となされた後方張出部(23)と、後方張出部(23)の先端寄り部分から外方に突出しかつ先端に点Ａを中心とする断面円弧形の端面(27)を有する外方凸部(26)とによって構成されて、第２ヒンジ構成部(22)に、外方に向かって開口した開口部(28)を有する第１ヒンジ構成部一部嵌込み用凹部(29)が設けられるとともに、外方凸部(26)の基部より後方張出部(23)の先端部(23a) に至る嵌合凹部(25)が設けられている。
【００３１】
なお、この実施例では、外方凸部(26)の先端部に横断面略円形の径大の頭部(26a) が設けられており、この頭部(26a) は、蓋(3) が開くさいの軸部となされるものである。
【００３２】
ここで、ケース(1) の後壁パネル側枠部材(11)に、蓋(3) を取り付けるには、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の凹部(19)内に、蓋(3) 後縁部の側枠部材(21)の第２ヒンジ構成部(22)を、これの一端からスライドさせながら嵌め入れれば良く、これによって蓋(3) の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００３３】
また、蓋(3) の側枠部材(21)の第２ヒンジ構成部(22)を、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の凹部(19)内に嵌め入れて、外方凸部(26)先端の断面円弧形の端面(27)を、第１ヒンジ構成部(12)側の段状凸部(16)に係り合わせるだけで、蓋(3) 側の第２ヒンジ構成部(22)の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋(3) の開閉がスムーズである。
【００３４】
図１および図２に示すように、ケース(1) の開口部(2) を覆う蓋(3) が水平状態にあるときには、第１ヒンジ構成部(12)の凹部(19)内において、第２ヒンジ構成部(22)の後方張出部(23)の凸面部(24)が案内部(14)の断面円弧形の案内面(14a) に沿うように当接せしめられるとともに、案内部(14)の基部寄りの嵌合凸部(15)が第２ヒンジ構成部(22)側の嵌合凹部(25)に嵌め入れられ、かつ外方凸部(26)先端の断面円弧形の端面(27)が、第１ヒンジ構成部(12)側の段状凸部(16)に係り合わせられている。従って後壁パネル側枠部材(11)側の第１ヒンジ構成部(12)と、蓋(3) 側の第２ヒンジ構成部(22)との引っ掛かり部分（係合部分）が大きいので、結合強度が充分に大きいものである。
【００３５】
そして、上記ケース(1) に物品を入れる場合、水平状態の閉じている蓋(3) を、図３および図４に示すように、上方に持ち上げると、蓋(3) 側枠部材(21)の第２ヒンジ構成部(22)の後方張出部(23)の凸面部(24)が、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)側の案内部(14)内側の断面円弧形の案内面(14a) に沿って移動するとともに、蓋(3) が、第２ヒンジ構成部(22)の外方凸部(26)先端の断面円弧形の端面(27)の中心点Ａを中心として揺動し、蓋(3) が後壁パネル側枠部材(11)に対し回転して、ケース(1) の外側に開かれ、物品をケース(1) 内に入れることができる。またこのとき、蓋(3) の開閉は非常にスムーズである。
【００３６】
なお、この第１実施例の蓋(3) は、ケース(1) より外れないようになされている。すなわち、図２に示すように、ケース(1) の開口部(2) 後縁の後壁パネル側枠部材(11)の第１ヒンジ構成部(12)において、断面円弧形の案内面(14a) を有する案内部(14)に、これを前方に延長する短い突出部(20)が設けられていて、該第１ヒンジ構成部(12)の凹部(19)の開口部(18)の幅が、第２ヒンジ構成部(22)の後方張出部(23)の先端から外方凸部(26)の先端までの幅より狭いものとなされており、従って後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の嵌込み用凹部(19)内に嵌め入れられた蓋(3) 側の第２ヒンジ構成部(22)は、該凹部(19)より脱出することができず、蓋(3) はケース(1) より外れない。
【００３７】
なお、上記のように、ケース(1) の内開き蓋(3) の揺動兼取付機構が簡素化され、かつケース(1) の開口部(2) 後縁の後壁パネル側枠部材(11)および蓋(3) 後縁部の側枠部材(21)を、共にアルミニウム押出形材製としているため、軽量化を果たし得るとともに、錆の発生がない。また内開き蓋(3) の取付部分のケース(1) の外面に凹凸が無く、円滑な外観を得ることができ、蓋(3) の取付け部分の美観を向上し得るものである。
【００３８】
つぎに、図５と図６は、この発明の第２実施例を示すものである。ここで、上記第１実施例の場合と異なる点は、つぎ通りである。
【００３９】
まず図５に示すように、ケース(1) の開口部(2) 後縁の後壁パネルのアルミニウム中空押出形材製側枠部材(31)の上縁部に、上方に開口した凹部(33)を有する第１ヒンジ構成部(32)が設けられ、凹部(33)の前壁部(34)の上縁部に後方にのびる係合部(35)が設けられ、該凹部(33)内に開口後側縁より前壁部(34)の基部に至る横断面円弧状の案内面(36)が設けられている。
【００４０】
一方、蓋(3) 後縁部の側枠部材(41)の後壁部(41a) の外側縁部に、後方斜め内向きに曲がった横断面略円弧状の屈曲部(43)と、これの先端部より前向きに折り返えされた折返し状係合部(44)とを有する第２ヒンジ構成部(42)が設けられている。ここで、横断面略円弧状の屈曲部(43)は、後壁パネル側枠部材(31)の第１ヒンジ構成部(32)における横断面円弧状の案内面(36)と略同じ曲率半径を有している。
【００４１】
また、蓋(3) 後縁部の側枠部材(41)の後壁部(41a) の内側縁部には、ストッパとしての後方凸部(40)が設けられている。
【００４２】
ここで、ケース(1) の後壁パネル側枠部材(31)に、蓋(3) を取り付けるには、上記第２実施例の場合と同様に、後壁パネル側枠部材(31)の第１ヒンジ構成部(32)の凹部(33)内に、蓋(3) 後縁部の側枠部材(41)の第２ヒンジ構成部(42)の前向き折返し状係合部(44)を、これの一端からスライドさせながら嵌め入れれば良い。これによって蓋(3) の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００４３】
また、このように蓋(3) の第２ヒンジ構成部(42)の前向き折返し状係合部(44)を、後壁パネル側枠部材(31)の第１ヒンジ構成部(32)の凹部(33)内に嵌め入れて、前向き折返し状係合部(44)を凹部(33)の開口前側縁部の係合部(35)に係り合わせるだけで、蓋(3) 側の第２ヒンジ構成部(42)の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋(3) の開閉がスムーズである。
【００４４】
図１および図５に示すように、ケース(1) の開口部(2) を覆う蓋(3) が水平状態にあるときには、蓋(3) の第２ヒンジ構成部(42)の前向き折返し状係合部(44)が後壁パネル側枠部材(31)の凹部(33)内に嵌め入れられて、該折返し状係合部(44)が凹部(33)の開口前側縁部の係合部(35)に係り合わせられている。またこのとき、ストッパとしての後方凸部(40)の先端が、ケース(1) の開口部(2) 後縁すなわち後壁パネル側枠部材(31)の第１ヒンジ構成部(32)の前壁部(34)の前面に当接せしめられている。
【００４５】
そして、上記ケース(1) に、物品を入れる場合、水平状態の閉じている蓋(3) を、図３および図６に示すように、上方に持ち上げると、蓋(3) が蓋側枠部材(41)の第２ヒンジ構成部(21)先端の前向き折返し状係合部(44)の前端部を中心として回動するようにして、かつ該第２ヒンジ構成部(42)の先端が、第１ヒンジ構成部(32)の凹部(33)内の横断面円弧状の案内面(36)に案内されて、蓋(3) がケース(1) の外側に開かれ、物品をケース(1) 内に入れることができ、またこのときの蓋(3) の開閉は非常にスムーズである。
【００４６】
つぎに、図７〜９は、この発明の第３実施例を示すものである。ここで、上記第１実施例の場合と異なる主な点は、蓋(3) がケース(1) より外れるようになされている点にある。
【００４７】
すなわち、この第３実施例では、図７に示すように、ケース(1) の開口部(2) 後縁の後壁パネル側枠部材(11)の第１ヒンジ構成部(12)において、案内部(14)を前方に延長する上記第１実施例の場合のような短い突出部(20)が設けられておらず、第１ヒンジ構成部(12)の開口部(18)が、第２ヒンジ構成部(22)の後方張出部(23)の先端から外方凸部(26)の先端までの幅と同じ幅か、または若干広い幅を有するものとなされ、第２ヒンジ構成部(22)の後方張出部(23)および外方凸部(26)が第１ヒンジ構成部(12)の開口部(18)より出入れ自在となされている。
【００４８】
従って、ケース(1) の開口部(2) 後縁の後壁パネル側枠部材(11)に、蓋(3) を取り付ける場合は、ケース(1) の前面側に、蓋(3) を配置し、これの第２ヒンジ構成部(22)を、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の嵌込み用凹部(19)内に、前方より嵌め入れれば良く、これによって蓋(3) の取付けをケース(1) の前面側より簡単に行なうことができて、取付工数を大幅に削減することができる。
【００４９】
また、蓋(3) の側枠部材(21)の第２ヒンジ構成部(22)を、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の凹部(19)内に嵌め入れて、外方凸部(26)先端の断面円弧形の端面(27)を、第１ヒンジ構成部(11)側の段状凸部(16)に係り合わせるだけで、蓋(3) 側の第２ヒンジ構成部(22)の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋(3) の開閉がスムーズとなる。
【００５０】
図１と図７に示すように、ケース(1) の開口部(2) を覆う蓋(3) が水平状態にあるときには、蓋側枠部材(21)のヒンジ構成部(22)が、後壁パネル側枠部材(11)の第１ヒンジ構成部(12)の凹部(19)内に嵌め込まれて、第２ヒンジ構成部(22)の外方凸部(26)先端の断面円弧形の端面(27)が、第１ヒンジ構成部(12)の段状凸部(16)に係り合わせられている。
【００５１】
そして、上記ケース(1) に物品を入れる場合、水平状態の閉じている蓋(3) を、図３および図８に示すように、上方に持ち上げると、蓋(3) が後壁パネル側枠部材(11)に対し回転して、ケース(1) の外側に開かれ、物品をケース(1) 内に入れることができ、またこのときの蓋(3) の開閉は非常にスムーズである。
【００５２】
また、蓋(3) の揺動後、必要に応じて、図９に示すように、蓋(3) 側の第２ヒンジ構成部(22)を、ケース(1) の第１ヒンジ構成部(12)側の凹部(19)の開口部(18)より前方に脱出せしめることにより、蓋(3) を簡単に取り外すことができるので、例えば補修や洗浄のさい、蓋(3) の取外しおよび取付け作業が簡単であり、ケース(1) の取扱いが容易である。
【００５３】
なお、上記第２実施例と第３実施例のその他の点は、前記第１実施例の場合と同様であるので、図面において同一のものには同一の符号を付した。
【００５４】
また、第１ヒンジ構成部(12)を有する後壁パネル側枠部材(11)および第２ヒンジ構成部(22)を有する蓋側枠部材(21)は、通常アルミニウム中空押出形材製であるが、これに限らず、その他の金属あるいは硬質合成樹脂などの押出形材によりつくられていても良い。
【００５５】
なお、上記実施例においては、ケース(1) の上面に開口部(2) が設けられて、開口部(2) を覆う蓋(3) が上下方向に揺動自在となされているが、これに限定されず、その他、ケース(1) の正面、背面あるいは左右両面のうち一側面に開口部(2) が設けられ、この開口部(2) を覆うように蓋(3) がケース(1) に対して揺動自在に取り付けられていても良い。
【００５６】
【発明の効果】
この発明によるケースにおける蓋の開閉装置は、上述のように、請求項１〜３記載のいずれの発明によっても、ケースの蓋の揺動兼取付機構を簡素化し、従来の鋼製蝶番の取付けが全く不要で、蓋の取付工数を削減することができて、取付け作業に手間がかからず、製作コストが安くつき、かつ部品点数が少ないために管理が容易であり、しかも蓋の全閉時に、蓋の取付部分の外面に凹凸のない円滑な外観を得ることができ、また錆の発生がなく、かつ軽量化を果たし得る。
【００５７】
また請求項１記載の発明によれば、ケースの後壁パネル側枠部材に、蓋を取り付けるには、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に、蓋後縁部の側枠部材の第２ヒンジ構成部を、これの一端からスライドさせながら嵌め入れれば良く、これによって蓋の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００５８】
また、蓋の側枠部材の第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れて、外方凸部先端の断面円弧形の端面を、第１ヒンジ構成部側の段状凸部に係り合わせるだけで、蓋側の第２ヒンジ構成部の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋の開閉がスムーズである。
【００５９】
さらに、第１ヒンジ構成部の前方張出部の基部寄りに嵌合凸部が設けられるとともに、第２ヒンジ構成部の外方凸部の基部より後方張出部の先端部に至る嵌合凹部が設けられていて、蓋が水平状態にあるときには、第１ヒンジ構成部の凹部内において、第１ヒンジ構成部の案内部の基部寄りの嵌合凸部が第２ヒンジ構成部側の嵌合凹部に嵌め入れられているから、後壁パネル側枠部材側の第１ヒンジ構成部と、蓋側の第２ヒンジ構成部との引っ掛かり部分（係合部分）が大きいので、結合強度が充分に大きいものである。
【００６０】
また請求項２記載の発明によれば、ケースの後壁パネル側枠部材に、蓋を取り付けるには、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に、蓋後縁部の側枠部材の第２ヒンジ構成部の前向き折返し状係合部を、これの一端からスライドさせながら嵌め入れれば良く、これによって蓋の取付けを、簡単な組合わせ作業により確実に行なうことができ、取付工数を大幅に削減することができる。
【００６１】
また、このように蓋の第２ヒンジ構成部の前向き折返し状係合部を、後壁パネル側枠部材の第１ヒンジ構成部の凹部内に嵌め入れて、前向き折返し状係合部を凹部の開口前側縁部の係合部に係り合わせるだけで、蓋側の第２ヒンジ構成部の回転芯が一定のものとなり、取付精度を確実に出すことができ、蓋の開閉がスムーズである。
【００６２】
そして、とくに請求項３記載の発明によれば、ケースの後壁パネル側枠部材の第１ヒンジ構成部の開口部が、蓋の側枠部材の第２ヒンジ構成部の後方張出部の先端から外方凸部の先端までの幅と同じ幅か、または若干広い幅を有していて、第２ヒンジ構成部の後方張出部および外方凸部が第１ヒンジ構成部の開口部より出入れ自在となされているから、ケースの後壁パネル側枠部材に、蓋を取り付けるには、ケースの前面側に、蓋を配置し、これの第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の嵌込み用凹部内に、前方より嵌め入れれば良く、これによって蓋の取付けをケースの前面側より簡単に行なうことができて、取付工数を大幅に削減することができる。
【００６３】
また、ケースの蓋を外側に開いた後、必要に応じて、その第２ヒンジ構成部を、後壁パネル側枠部材の第１ヒンジ構成部の嵌込み用凹部の開口部より前方に脱出せしめることにより、蓋を取り外すことができるので、例えば補修や洗浄のさい蓋の取外しおよび取付け作業が容易であり、ケースの取扱いが容易であるとともに、例えケース構成パネルの外表面板が破損したときにも、修理を簡単に行なうことができるという効果を奏する。
【図面の簡単な説明】
【図１】ケースの概略斜視図で、蓋が閉じた状態を示している。
【図２】この発明の第１実施例のケースの蓋取付部分の拡大垂直断面図で、蓋が閉じた状態を示している。
【図３】ケースの概略斜視図で、蓋が外側に開いた状態を示している。
【図４】この発明の第１実施例のケースの蓋取付部分の拡大垂直断面図で、蓋が外側に開いた状態を示している。
【図５】この発明の第２実施例のケースの蓋取付部分の拡大垂直断面図で、蓋が閉じた状態を示している。
【図６】同拡大垂直断面図で、蓋が外側に開いた状態を示している。
【図７】この発明の第３実施例のケースの蓋取付部分の拡大垂直断面図で、蓋が閉じた状態を示している。
【図８】同拡大垂直断面図で、蓋が外側に開いた状態を示している。
【図９】同拡大垂直断面図で、ケースより蓋を取り外した状態を示している。
【符号の説明】
１ケース
２開口部
３蓋
７ヒンジ部
１０後壁パネル
１１後壁パネル側枠部材
１２第１ヒンジ構成部
１３前方張出部
１４案内部
１４ａ断面円弧形の案内面
１５嵌合凸部
１６段状凸部
１７断面凹弧状の案内面
１８開口部
１９第２ヒンジ構成部嵌込み用凹部
２０短い突出部
２１蓋側枠部材
２２第２ヒンジ構成部
２３後方張出部
２３ａ先端部
２４断面円弧形の凸面部
２５嵌合凹部
２６外方凸部
２７断面円弧形の端面
２８開口部
２９第１ヒンジ構成部一部嵌込み用凹部
３１後壁パネル側枠部材
３２第１ヒンジ構成部
３３凹部
３４前壁部
３５係合部
３６横断面円弧状の案内面
４１蓋側枠部材
４２第２ヒンジ構成部
４３横断面略円弧状の屈曲部
４４折返し状係合部[0001]
[Industrial application fields]
  The present invention relates to a lid opening / closing device in a case.
[0002]
[Prior art]
  Conventionally, a steel hinge has been used to attach an open-type lid to a case. In addition, a so-called through hinge was used particularly when the irregularities on the appearance were disliked. And as a method of attaching these hinges to the case body or the lid, there are a case where a fixing tool such as a bolt is used and a case where welding is performed.
[0003]
[Problems to be solved by the invention]
  However, according to the above-described conventional method of using a fixing tool such as a bolt, the installation work of the hinge is very troublesome.HeelsIn addition, the latter welding method requires equipment such as a welding machine, and requires advanced welding skills.HeelsTherefore, there is a problem that the manufacturing cost is high. Also, since a plurality of hinges are usually used, according to the conventional method described above, it is very difficult to adjust the hinge rotation cores in each case, and it is very difficult to obtain the mounting accuracy, and the number of parts is high. It was troublesome. In order to improve the appearance, extra man-hours such as blindfolding and painting are required. In addition, the hinges are made of steel and the individual weights are heavy, so the weight of the entire case increases and the steel hinges are long-lasting. There was a problem that rust was generated by use. In addition, when hinges are attached by welding, it is very troublesome to repair when the outer surface plate of the case panel is damaged.HeelsThere was a problem that.
[0004]
  The object of the present invention is to solve the above-mentioned problems of the prior art, simplify the swinging and mounting mechanism of the case lid, eliminate the need for mounting a conventional steel hinge, and reduce the number of steps for mounting the lid. Can be installedHeelsIn addition, the manufacturing cost is low and the number of parts is small, so management is easy, and when the lid is fully closed, a smooth appearance without irregularities can be obtained on the outer surface of the lid mounting portion. The mounting accuracy of the cover is very high, the lid can be opened and closed smoothly, no rust is generated, and the weight can be reduced. An object of the present invention is to provide a lid opening and closing device in a case.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, in the first aspect of the present invention, the first hinge component is provided on the rear wall panel side frame member of the rear edge of the opening of the case, and the opening of the case is provided. A second hinge component is provided on the side frame member of the rear edge of the cover to be covered, and the first hinge component of the rear wall panel side frame member extends forward from the side frame member, and the front tension member A second hinge component having an opening that opens toward the front in the first hinge component, the guide unit having a guide surface having an arcuate cross-section provided facing the inside of the protruding portion A recessed portion for fitting is formed, and a fitting convex portion is provided near the base of the front overhanging portion, and a stepped convex portion is provided inside the portion near the tip of the front overhanging portion. A guide surface having a concave arc-shaped cross section is provided on the rear side, and the second hinge component of the lid side frame member is rearward A rear projecting portion whose inner side surface is a convex surface portion having an arc-shaped cross section, and an outer convex portion projecting outward from a portion closer to the tip of the rear projecting portion and having an end surface having an arc-shaped cross section at the tip. The second hinge component is provided with a recess for partly fitting the first hinge component having an opening that opens outward, and the rear projecting part from the base of the outer convex part And a second hinge of the side frame member of the lid rear edge portion in the fitting concave portion of the first hinge component of the panel side frame member of the rear edge of the opening of the case. When the constituent parts are fitted together and the lid is in a horizontal state covering the case opening, the convex part of the rear projecting part of the second hinge constituent part is the sectional circle of the guide part in the concave part of the first hinge constituent part. Abutting along the arc-shaped guide surface and close to the base of the guide The joint convex portion is fitted into the fitting concave portion on the second hinge constituent portion side, and the end surface of the outer convex portion at the end of the circular arc section is engaged with the step convex portion on the first hinge constituent portion side, When the case lid is opened outward, the convex portion of the rear projecting portion of the second hinge component of the lid side frame member moves along the guide surface of the guide portion of the rear wall panel side frame member, The lid is configured to swing around the tip of the outward projection of the second hinge component., Rear wall panel side frame member (11) 1st hinge component (12) Guide surface with arc-shaped cross section (14a) Guide part with (14) Short projection that extends forward (20) The first hinge component (12) Recess in (19) Opening (18) The width of the second hinge component (twenty two) The rear overhanging part (twenty three) Projection outward from tip (26) The rear wall panel side frame member is narrower than the width to the tip of (11) 1st hinge component (12) Recesses for fitting (19) Lid fitted inside (3) Side second hinge component (twenty two) Is the recess (19) Can not escape more, the lid (3) Is the case (1) To prevent it from coming offThe gist of the lid opening and closing device in the case.
[0006]
  Next, the invention according to claim 2 is provided such that a first hinge constituting portion having a concave portion opened upward is provided at an upper edge portion of the rear wall panel side frame member of the rear edge of the opening portion of the case, and the front wall of the concave portion is provided. A lid that covers the opening of the case is provided with an engaging portion extending rearward at the upper edge of the portion, and a guide surface having an arc-shaped cross section extending from the rear edge of the opening to the base of the front wall in the recess. On the outer side of the rear end portion of the side frame member at the rear edge portion, a bent portion having a substantially arc-shaped cross section that is bent backward and inward, and a folded engagement portion that is turned forward from the front end portion thereof. A second hinge constituent part is provided, a forward folded engaging part of the second hinge constituent part of the lid is fitted into a recess of the first hinge constituent part of the rear wall panel side frame member, and the lid opens the case When it is in a horizontal state covering the part, the forward folded engaging part is engaged with the engaging part of the opening front side edge of the recess. When the case lid is opened to the outside, the tip of the second hinge component of the lid side frame member is guided by a guide surface having an arc-shaped cross section in the recess. The gist is a switchgear.
[0007]
  Next, in the invention according to claim 3, the first hinge constituting portion is provided on the rear wall panel side frame member of the rear edge of the opening of the case, and the side frame member of the rear edge of the lid that covers the opening of the case is provided. A second hinge constituent part is provided, the first hinge constituent part of the rear wall panel side frame member is provided facing the front overhanging part extending forward from the side frame member and the inside of the front overhanging part; And a guide part having a guide surface having an arcuate cross section, wherein the first hinge constituent part has a second hinge constituent part fitting recess having an opening opened forward, and the front tensioning A step-like convex portion is provided inside the portion near the tip of the protruding portion, a guide surface having a cross-sectional concave arc shape is provided on the rear side of the step-like convex portion, and the second hinge component portion of the lid side frame member A rear projecting part with a convex surface part with an arc-shaped cross section on the inner surface and an outer part from the rear end part of the rear projecting part The first hinge constituent part is partially fitted into the second hinge constituent part, which has an outwardly projecting part having an end surface projecting at the tip and having an arcuate end surface at the tip. And the opening of the first hinge component has the same width as the width from the tip of the rear overhanging portion of the second hinge component to the tip of the outward projection, or a slightly wider width. And the rear projecting portion and the outward projecting portion of the second hinge constituent portion can be freely inserted and removed from the opening portion of the first hinge constituent portion, and the panel side frame member at the rear edge of the opening portion of the case When the second hinge constituent part of the side frame member at the rear edge of the lid is fitted in the fitting concave part of the first hinge constituent part, and the lid is in a horizontal state covering the case opening, the first hinge constituent part The convex surface portion of the rear overhanging portion of the second hinge component portion is the cross-sectional circle of the guide portion. The end surface of the outer convex portion is engaged with the stepped convex portion on the first hinge component side, and the case lid is on the outside. When opening, the convex surface portion of the rear projecting portion of the second hinge constituting portion of the lid side frame member moves along the guide surface of the guide portion of the rear wall panel side frame member, and the lid is moved to the second hinge. The second hinge component of the lid-side frame member is moved to the recess of the first hinge component after the lid is rocked, if necessary. The gist of the lid opening / closing device in the case is that the lid can be removed by being allowed to escape forward from the opening.
[0008]
[Action]
  In the above, according to the lid opening and closing device in the case according to claim 1, in order to attach the lid to the rear wall panel side frame member of the case, in the concave portion of the first hinge component of the rear wall panel side frame member, The second hinge constituent part of the side frame member at the rear edge of the lid is fitted while sliding from one end thereof, and the second hinge constituent part of the lid is inserted into the recess of the first hinge constituent part of the side frame member.ItIt ’s fine.
[0009]
  Accordingly, the lid can be securely attached by a simple combination work, and the number of attachment steps can be greatly reduced.
[0010]
  Further, the second hinge component of the side frame member of the lid is fitted into the recess of the first hinge component of the rear wall panel side frame member, and the end surface of the cross-section arc shape at the tip of the outer convex part is By simply engaging the stepped convex portion on the one hinge component side, the rotation center of the second hinge component portion on the lid side is constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly. .
[0011]
  In addition, a fitting convex part is provided near the base part of the front projecting part of the first hinge constituent part, and a fitting concave part extending from the base part of the outer convex part of the second hinge constituent part to the tip part of the guide part is provided. When the lid is in a horizontal state, the fitting convex part near the base part of the guide part of the first hinge constituent part becomes the fitting concave part on the second hinge constituent part side in the concave part of the first hinge constituent part. Since it is fitted, the hook portion (engagement portion) between the first hinge component on the rear wall panel side frame member side and the second hinge component on the lid side is large, so that the coupling strength is sufficiently large It is.
[0012]
  For example, when putting an article into the case, when the closed lid in the horizontal state is opened outward, the convex portion of the rear projecting portion of the second hinge component of the lid side frame member becomes the rear wall panel side frame. The member moves along the guide surface of the guide portion on the first hinge component portion side of the member, and the lid is more specifically a cross section of the tip of the outer convex portion centering on the tip of the outer convex portion of the second hinge component portion. It swings about the center point A of the arc-shaped end face, the lid rotates with respect to the rear wall panel side frame member, is opened to the outside of the case, and the article can be put in the case. At this time, the opening and closing of the lid is very smooth.
[0013]
  Further, in the invention according to claim 2, in order to attach the lid to the rear wall panel side frame member of the case, as in the case of the invention according to claim 1, the first hinge of the rear wall panel side frame member is used. Fit the forward-turned engaging portion of the second hinge constituent portion of the side frame member at the rear edge of the lid into the concave portion of the constituent portion while sliding from one end of this.ItIt ’s fine. Accordingly, the lid can be securely attached by a simple combination work, and the number of attachment steps can be greatly reduced.
[0014]
  Also, the forward folded engagement portion of the second hinge component of the lid is thus fitted into the recess of the first hinge component of the rear wall panel side frame member, and the forward folded engagement portion is By simply engaging with the engaging portion at the front edge of the opening, the rotational center of the second hinge component on the lid side becomes constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly.
[0015]
  When the article is put into the case, when the horizontally closed lid is opened to the outside, the lid is centered on the front end portion of the forward folded engagement portion at the tip of the second hinge component portion of the lid side frame member. And the tip of the second hinge component is guided by a guide surface having an arc-shaped cross section in the recess of the first hinge component, and the lid is opened to the outside of the case. Can be put in the case.
[0016]
  Further, according to the lid opening / closing device in the case described in claim 2, as in the case of the invention described in claim 1, the swinging and mounting mechanism of the case lid is simplified, and the case opening By making both the rear wall panel side frame member of the rear edge and the side frame member of the lid rear edge made of a metal or synthetic resin extruded material such as aluminum, the weight can be reduced and rust is generated. There is no. Furthermore, a smooth appearance without unevenness can be obtained on the outer surface of the lid mounting portion, and the aesthetic appearance of the lid mounting portion can be improved.
[0017]
  Furthermore, according to the lid opening / closing device in the case according to claim 3, the opening of the first hinge component has a width from the tip of the rear projecting portion of the second hinge component to the tip of the outward convex portion. They have the same width or a slightly wider width, and the rear projecting portion and the outward convex portion of the second hinge constituent portion can be freely inserted and removed from the opening of the first hinge constituent portion.
[0018]
  Therefore, in order to attach the lid to the rear wall panel side frame member of the case, the lid is arranged on the upper surface side of the case, and the second hinge component of this is replaced with the first hinge component of the rear wall panel side frame member. Fit from the front into the recess for fittingItThus, the lid can be easily attached from the upper surface side of the case, and the number of attachment steps can be greatly reduced.
[0019]
  Further, the second hinge component of the side frame member of the lid is fitted into the recess of the first hinge component of the rear wall panel side frame member, and the end surface of the cross-section arc shape at the tip of the outer convex part is By simply engaging the stepped convex portion on the one hinge component side, the rotation center of the second hinge component portion on the lid side is constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly. .
[0020]
  And when putting an article into the case, when the closed lid in the horizontal state is opened to the outside, the lid rotates with respect to the rear wall panel side frame member and is opened to the outside of the case, and the article is put into the case. It can be put in. At this time, the opening and closing of the lid is very smooth.
[0021]
  In addition, after the lid swings, the lid can be removed by allowing the second hinge component part to escape forward from the opening of the recess for fitting, if necessary. The lid can be easily removed and attached, the case can be easily handled, and even if the outer surface plate of the case component panel is damaged, repair can be easily performed.
[0022]
  In addition, as described above, the swinging and mounting mechanism of the case lid is simplified, and the rear wall panel side frame member and the lid rear edge portion of the case opening rear edge without using a conventional steel hinge. Both of the side frame members can be made lighter by, for example, being made of a metal such as aluminum or an extruded shape of a synthetic resin, and rust is not generated. Furthermore, since a conventional steel hinge is not used, a smooth appearance without irregularities can be obtained on the outer surface of the lid mounting portion, and the aesthetic appearance of the lid mounting portion can be improved.
[0023]
【Example】
  Next, an embodiment of the present invention will be described with reference to the drawings.
[0024]
  In this specification, front and rear, left and right are based on FIG. 2, front is the left side of FIG. 2, and rear is the same right side.GoodAlso, the left and right shall be referred to backward. Further, the inside means the inside of the case, and the outside means the outside.
[0025]
  1 to 4 show a first embodiment of the present invention.
[0026]
  First, in FIG. 1, an opening (2) is provided on the upper surface of the case (1), and a lid (3) is swingably attached to the rear edge of the opening (2) in the vertical direction.
[0027]
  As shown in FIG. 2, the lid (3) has a first hinge component (12) provided on the side frame member (11) of the rear wall panel (10) of the rear wall panel (10) of the opening (2) of the case (1). ) And the second hinge component (22) provided on the side frame member (21) at the rear edge of the lid (3) through the hinge (7). Is attached.
[0028]
  The lid (3) and the rear wall panel (10) of the case (1) are both laminated with the aluminum surface plates (4) and (5) on both the inside and outside of the core material (6) made of a heat insulating panel. A side frame member made of an aluminum hollow extruded profile is attached to the edge.
[0029]
  Here, the first hinge component (12) of the rear wall panel side frame member (11) includes a front overhanging portion (13) extending forward from the side frame member (11) and a front overhanging portion (13). And a guide portion (14) having a guide surface (14a) having an arcuate cross section provided opposite to the inner side of the first opening, and an opening portion opening forward to the first hinge component portion (12) A recess (19) for fitting the second hinge component having (18) is formed, and a fitting protrusion (15) is provided near the base of the front overhanging portion (13), and a front overhanging portion ( A step-like convex portion (16) is provided inside the portion near the tip of 13), and a guide surface (17) having a concave arc-shaped cross section is provided on the rear side of the step-like convex portion (16).
[0030]
  On the other hand, the second hinge constituent part (22) of the side frame member (21) at the rear edge of the lid (3) extends rearward and has a convex part (24) having an arcuate inner surface. And an outwardly projecting portion (26) having an end surface (27) that protrudes outward from a portion near the tip of the rear overhanging portion (23) and has an arcuate cross section centering on point A at the tip. The second hinge component (22) is provided with a recess (29) for partially fitting the first hinge component having an opening (28) opening outward, and the outer A fitting recess (25) is provided that extends from the base of the protrusion (26) to the tip (23a) of the rear overhang (23).
[0031]
  In this embodiment, a large-diameter head (26a) having a substantially circular cross section is provided at the tip of the outward projection (26), and the lid (3) is provided on the head (26a). It is to be used as a shaft for opening.
[0032]
  Here, in order to attach the lid (3) to the rear wall panel side frame member (11) of the case (1), the recess (19) of the first hinge component (12) of the rear wall panel side frame member (11) is provided. ) Insert the second hinge component (22) of the side frame member (21) at the rear edge of the lid (3) while sliding it from one end of the lid (3)ItAs a result, the lid (3) can be securely attached by a simple assembling work, and the number of installation steps can be greatly reduced.
[0033]
  Further, the second hinge component (22) of the side frame member (21) of the lid (3) is fitted into the recess (19) of the first hinge component (12) of the rear wall panel side frame member (11). The lid (3) can be obtained simply by engaging the end surface (27) having a circular arc cross section at the tip of the outer convex portion (26) with the stepped convex portion (16) on the first hinge component (12) side. The rotation center of the second hinge component (22) on the side becomes constant, the mounting accuracy can be ensured, and the lid (3) can be opened and closed smoothly.
[0034]
  As shown in FIGS. 1 and 2, when the lid (3) covering the opening (2) of the case (1) is in a horizontal state, the first hinge component (12) has a first recess in the recess (19). 2 The convex portion (24) of the rear projecting portion (23) of the hinge component (22) is brought into contact with the guide surface (14a) having a circular arc cross section of the guide portion (14). The fitting convex part (15) near the base of (14) is fitted into the fitting concave part (25) on the second hinge component part (22) side, and the outer convex part (26) has a circular arc section at the tip. This end face (27) is engaged with the step-like convex part (16) on the first hinge constituent part (12) side. Therefore, the hook part (engagement part) between the first hinge constituent part (12) on the rear wall panel side frame member (11) side and the second hinge constituent part (22) on the lid (3) side is large. The strength is sufficiently large.
[0035]
  When the article is put into the case (1), when the horizontally closed lid (3) is lifted upward as shown in FIGS. 3 and 4, the lid (3) side frame member (21) The convex part (24) of the rear projecting part (23) of the second hinge constituent part (22) of the second hinge constituent part (22) is the guide part (14) on the first hinge constituent part (12) side of the rear wall panel side frame member (11). While moving along the guide surface (14a) having an arcuate cross section on the inner side, the lid (3) has an end surface with an arcuate cross section (26) at the tip of the outward projection (26) of the second hinge component (22). 27) swings about the center point A, the lid (3) rotates relative to the rear wall panel side frame member (11) and is opened outside the case (1), and the article is placed inside the case (1). Can be put in. At this time, the lid (3) opens and closes very smoothly.
[0036]
  The lid (3) of the first embodiment is designed not to be removed from the case (1). That is, as shown in FIG. 2, in the first hinge constituent part (12) of the opening part (2) of the case (1), the rear wall panel side frame member (11) of the rear edge, 14a) is provided with a short projecting portion (20) extending forward, and the opening (18) of the recess (19) of the first hinge component (12) is provided. The width is narrower than the width from the tip of the rear projecting portion (23) of the second hinge component (22) to the tip of the outward projection (26), and therefore the rear wall panel side frame member ( 11) The second hinge component (22) on the lid (3) side fitted in the fitting recess (19) of the first hinge component (12) escapes from the recess (19). The lid (3) cannot be removed from the case (1).
[0037]
  As described above, the swinging and mounting mechanism of the inner lid (3) of the case (1) is simplified, and the opening (2) of the case (1) is provided on the rear wall panel side frame member ( 11) and lid (3) Since both side frame members (21) at the rear edge are made of extruded aluminum, the weight can be reduced and rust is not generated. Further, the outer surface of the case (1) of the mounting portion of the inner opening lid (3) is not uneven, and a smooth appearance can be obtained, and the appearance of the mounting portion of the lid (3) can be improved.
[0038]
  5 and 6 show a second embodiment of the present invention. Here, the differences from the case of the first embodiment are as follows.
[0039]
  First, as shown in FIG. 5, a recess (33) opened upward is formed on the upper edge of the aluminum hollow extruded profile side frame member (31) of the rear wall panel of the opening (2) of the case (1). ) Having a first hinge component (32), and an engaging portion (35) extending rearward is provided on the upper edge of the front wall (34) of the recess (33). A guide surface (36) having a circular cross section extending from the rear edge of the opening to the base of the front wall (34) is provided.
[0040]
  On the other hand, on the outer edge portion of the rear wall portion (41a) of the side frame member (41) at the rear edge portion of the lid (3), there is a bent portion (43) having a substantially arc-shaped cross section bent rearward and inward A second hinge constituent part (42) having a folded engagement part (44) folded forward from the front end part is provided. Here, the bent portion (43) having a substantially arc-shaped cross section is substantially the same radius of curvature as the guide surface (36) having a cross-sectional arc shape in the first hinge component (32) of the rear wall panel side frame member (31). have.
[0041]
  Further, a rear convex portion (40) as a stopper is provided on the inner edge portion of the rear wall portion (41a) of the side frame member (41) at the rear edge portion of the lid (3).
[0042]
  Here, in order to attach the lid (3) to the rear wall panel side frame member (31) of the case (1), the rear wall panel side frame member (31) of the rear wall panel side frame member (31) is attached as in the case of the second embodiment. In the recess (33) of the 1 hinge component (32), the forward folded engagement portion (44) of the second hinge component (42) of the side frame member (41) at the rear edge of the lid (3), Insert it while sliding it from one endItIt ’s fine. As a result, the lid (3) can be securely attached by a simple combination operation, and the number of installation steps can be greatly reduced.
[0043]
  Further, the forward folded engagement portion (44) of the second hinge component (42) of the lid (3) is used as the concave portion of the first hinge component (32) of the rear wall panel side frame member (31). The second hinge on the lid (3) side is simply fitted into the (33) and the forward folded engagement portion (44) is engaged with the engagement portion (35) at the front edge of the opening of the recess (33). The rotating core of the component (42) is constant, the mounting accuracy can be ensured, and the lid (3) can be opened and closed smoothly.
[0044]
  As shown in FIGS. 1 and 5, when the lid (3) covering the opening (2) of the case (1) is in a horizontal state, the second hinge component (42) of the lid (3) is folded forward. The engagement portion (44) is fitted into the recess (33) of the rear wall panel side frame member (31), and the folded engagement portion (44) engages with the front edge of the opening of the recess (33). Part (35). At this time, the tip of the rear convex portion (40) as a stopper is located at the front end of the opening (2) rear edge of the case (1), that is, the first hinge component (32) of the rear wall panel side frame member (31). It is brought into contact with the front surface of the wall (34).
[0045]
  When the article is put into the case (1), the horizontally closed lid (3) is lifted upward as shown in FIGS. 3 and 6, and the lid (3) is moved to the lid side frame member. (41) the second hinge component (21) is pivoted about the front end of the forward folded engagement portion (44) at the tip, and the tip of the second hinge component (42) is The lid (3) is opened to the outside of the case (1) by being guided by the guide surface (36) having an arcuate cross section in the recess (33) of the first hinge component (32), and the article (1) The lid (3) can be opened and closed very smoothly.
[0046]
  7 to 9 show a third embodiment of the present invention. Here, the main difference from the case of the first embodiment is that the lid (3) is detached from the case (1).
[0047]
  That is, in this third embodiment, as shown in FIG. 7, in the first hinge constituent part (12) of the opening part (2) of the case (1) and the rear wall panel side frame member (11) of the rear edge, The short protrusion (20) as in the case of the first embodiment, which extends the portion (14) forward, is not provided, and the opening (18) of the first hinge component (12) The hinge component (22) has the same width as the width from the tip of the rearward projecting portion (23) to the tip of the outward projection (26) or a slightly wider width. The second hinge component ( The rear projecting portion (23) and the outward projecting portion (26) of 22) can be freely inserted and removed from the opening (18) of the first hinge component (12).
[0048]
  Therefore, when attaching the lid (3) to the rear wall panel side frame member (11) of the opening (2) of the case (1), place the lid (3) on the front side of the case (1). Then, the second hinge component (22) is fitted from the front into the fitting recess (19) of the first hinge component (12) of the rear wall panel side frame member (11).ItAs a result, the lid (3) can be easily mounted from the front side of the case (1), and the number of mounting steps can be greatly reduced.
[0049]
  Further, the second hinge component (22) of the side frame member (21) of the lid (3) is fitted into the recess (19) of the first hinge component (12) of the rear wall panel side frame member (11). The lid (3) can be obtained simply by engaging the end surface (27) having a circular arc cross section at the tip of the outer convex portion (26) with the stepped convex portion (16) on the first hinge component (11) side. The rotation center of the second hinge component (22) on the side becomes constant, so that the mounting accuracy can be ensured, and the lid (3) can be opened and closed smoothly.
[0050]
  As shown in FIGS. 1 and 7, when the lid (3) covering the opening (2) of the case (1) is in a horizontal state, the hinge component (22) of the lid side frame member (21) The wall panel side frame member (11) is fitted into the recess (19) of the first hinge component (12), and the outer convex portion (26) of the second hinge component (22) has a circular arc cross section at the tip. This end face (27) is engaged with the step-like convex part (16) of the first hinge constituent part (12).
[0051]
  When the article is put into the case (1), the lid (3) in the horizontal state is lifted upward as shown in FIG. 3 and FIG. Rotating with respect to the member (11), opened to the outside of the case (1), the article can be put into the case (1), and the opening and closing of the lid (3) at this time is very smooth.
[0052]
  Further, after the lid (3) is swung, as shown in FIG. 9, the second hinge component (22) on the lid (3) side is replaced with the first hinge component ( 12) The lid (3) can be easily removed by allowing it to escape forward from the opening (18) of the recess (19) on the side.For example, during repair or cleaning, the lid (3) can be removed and attached. The work is simple and the case (1) is easy to handle.
[0053]
  Since the other points of the second embodiment and the third embodiment are the same as those of the first embodiment, the same components are denoted by the same reference numerals in the drawings.
[0054]
  The rear wall panel side frame member (11) having the first hinge component (12) and the lid side frame member (21) having the second hinge component (22) are usually made of an aluminum hollow extruded shape. However, it is not limited to this, and may be made of an extruded shape such as other metals or hard synthetic resins.
[0055]
  In the above embodiment, the opening (2) is provided on the upper surface of the case (1), and the lid (3) covering the opening (2) is swingable in the vertical direction. In addition, an opening (2) is provided on one side of the front, back, or both left and right sides of the case (1), and the lid (3) covers the case (1) so as to cover the opening (2). ) May be attached so as to be able to swing.
[0056]
【The invention's effect】
  As described above, the lid opening and closing device in the case according to the present invention simplifies the swinging and mounting mechanism of the case lid and allows the conventional steel hinges to be attached. It is not necessary at all and can reduce the installation work of the lid.HeelsIn addition, the manufacturing cost is low and the number of parts is small, so it is easy to manage, and when the lid is fully closed, a smooth appearance with no irregularities can be obtained on the outer surface of the lid mounting part. It is possible to reduce the weight.
[0057]
  According to the first aspect of the present invention, in order to attach the lid to the rear wall panel side frame member of the case, the side of the lid rear edge portion is provided in the recess of the first hinge component of the rear wall panel side frame member. Fit the second hinge component of the frame member while sliding it from one endItThus, the lid can be securely attached by a simple combination operation, and the number of mounting steps can be greatly reduced.
[0058]
  Further, the second hinge component of the side frame member of the lid is fitted into the recess of the first hinge component of the rear wall panel side frame member, and the end surface of the cross-section arc shape at the tip of the outer convex part is By simply engaging the stepped convex portion on the one hinge component side, the rotation center of the second hinge component portion on the lid side is constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly. .
[0059]
  Furthermore, the fitting convex part is provided near the base part of the front projecting part of the first hinge constituent part, and the fitting concave part extending from the base part of the outer convex part of the second hinge constituent part to the tip part of the rear projecting part. When the lid is in a horizontal state, the fitting convex part near the base part of the guide part of the first hinge constituent part is fitted on the second hinge constituent part side in the concave part of the first hinge constituent part. Since it is fitted into the recess, the hooking portion (engagement portion) between the first hinge component on the rear wall panel side frame member side and the second hinge component on the lid side is large, so the coupling strength is sufficient It ’s a big one.
[0060]
  According to the second aspect of the present invention, in order to attach the lid to the rear wall panel side frame member of the case, the lid rear edge side is provided in the recess of the first hinge component of the rear wall panel side frame member. Fitting the forward folded engagement portion of the second hinge component of the frame member while sliding it from one endItThus, the lid can be securely attached by a simple combination operation, and the number of mounting steps can be greatly reduced.
[0061]
  Also, the forward folded engagement portion of the second hinge component of the lid is thus fitted into the recess of the first hinge component of the rear wall panel side frame member, and the forward folded engagement portion is By simply engaging with the engaging portion at the front edge of the opening, the rotational center of the second hinge component on the lid side becomes constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly.
[0062]
  And especially according to invention of Claim 3, the opening part of the 1st hinge structure part of the rear wall panel side frame member of a case is the front-end | tip of the back overhang | projection part of the 2nd hinge structure part of the side frame member of a lid | cover. From the opening of the first hinge constituent part, the rear projecting part and the outer convex part of the second hinge constituent part have a width that is the same as or slightly wider than the width from the outer convex part to the tip of the outer convex part. Since the lid can be attached to the rear wall panel side frame member of the case, the lid is disposed on the front side of the case, and the second hinge component of this case is attached to the rear wall panel side frame. Fit from the front into the recess for fitting in the first hinge component of the memberItThus, the lid can be easily attached from the front side of the case, and the number of attachment steps can be greatly reduced.
[0063]
  Further, after the case lid is opened to the outside, the second hinge component part is allowed to escape forward from the opening of the fitting recess of the first hinge component part of the rear wall panel side frame member as necessary. The lid can be removed, so that, for example, it is easy to remove and install the lid for repair and cleaning, the case is easy to handle, and even when the outer surface plate of the case component panel is damaged. The effect is that repair can be easily performed.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a case showing a state in which a lid is closed.
FIG. 2 is an enlarged vertical sectional view of a lid mounting portion of a case according to a first embodiment of the present invention, showing a state in which the lid is closed.
FIG. 3 is a schematic perspective view of a case showing a state in which a lid is opened outward.
FIG. 4 is an enlarged vertical sectional view of a lid mounting portion of the case according to the first embodiment of the present invention, showing a state where the lid is opened outward.
FIG. 5 is an enlarged vertical sectional view of a lid mounting portion of a case according to a second embodiment of the present invention, showing a state in which the lid is closed.
FIG. 6 is an enlarged vertical sectional view of the same, showing a state in which a lid is opened outward.
FIG. 7 is an enlarged vertical sectional view of a lid mounting portion of a case according to a third embodiment of the present invention, showing a state in which the lid is closed.
FIG. 8 is an enlarged vertical sectional view of the same, showing a state where a lid is opened outward.
FIG. 9 is an enlarged vertical sectional view showing the state in which the lid is removed from the case.
[Explanation of symbols]
1 case
2 opening
3 lid
7 Hinge part
10 Rear wall panel
11 Rear wall panel side frame member
12 First hinge component
13 Front overhang
14 Guide
14a Guide surface with circular arc cross section
15 Fitting projection
16 Stepped convex part
17 Guide surface with concave arc
18 opening
19 Concave portion for fitting second hinge component
20          Short protrusion
21 Lid side frame member
22 Second hinge component
23 Back overhang
23a Tip
24 Convex surface with arc-shaped cross section
25 Fitting recess
26 outward projection
27 End face of circular arc section
28 opening
29 First hinge component part recessed recess
31 Rear wall panel side frame member
32 First hinge component
33 recess
34 Front wall
35 Engagement part
36 Guide surface with arc-shaped cross section
41 Lid side frame member
42 Second hinge component
43 Bent part with substantially arc-shaped cross section
44 Folding engagement part

Claims

The opening (2) of the case (1) The first hinge component (12) is provided on the rear wall panel side frame member (11) of the rear edge, and the lid (3) covers the opening (2) of the case (1). ) Is provided with a second hinge component (22) on the side frame member (21) at the rear edge, and the first hinge component (12) of the rear wall panel side frame member (11) is connected to the side frame member (21). 11) a front overhanging portion (13) extending forward and a guide portion (14) provided opposite to the inside of the front overhanging portion (13) and having a guide surface (14a) having an arcuate cross section. Thus, the first hinge component (12) is formed with a second hinge component fitting recess (19) having an opening (18) opening forward, and the front overhang (13 ) Is provided near the base of the projection (15), and a stepped convex portion (16) is provided on the inner side of the front protruding portion (13) near the tip, thereby forming a stepped convex portion (16). A guide surface (17) having a concave arc cross section is provided on the rear side, and the second hinge component (22) of the lid side frame member (21) A rear projecting portion (23) that extends rearward and has a convex surface portion (24) whose inner side surface is an arc-shaped cross section, and protrudes outward from the tip end portion of the rear projecting portion (23) and has a cross-sectional circle at the tip A first hinge configuration comprising an outer convex portion (26) having an arcuate end surface (27) and having an opening (28) opening outward in the second hinge configuration portion (22); A recessed part (29) for partly fitting is provided, and a fitting recessed part (25) extending from the base part of the outwardly projecting part (26) to the tip part (23a) of the rearwardly projecting part (23) is provided. The opening (2) of the case (1), the recess (19) for fitting the first hinge component (12) of the panel side frame member (11) at the rear edge, and the lid (3) side of the rear edge When the second hinge constituent part (22) of the frame member (21) is fitted and the lid (3) is in a horizontal state covering the case opening (2), the concave part of the first hinge constituent part (12) ( 19) The convex part (24) of the rear overhang part (23) of the second hinge component part (22) is proposed. The fitting projection (15) near the base of the guide portion (14) is brought into contact with the guide surface (14a) having a circular arc cross section of the portion (14), and the second hinge component (22). An end surface (27) having a circular arc shape at the tip of the outer convex portion (26) is fitted into the fitting concave portion (25) on the side, and a stepped convex portion (16 on the first hinge component (12) side) ) And when the lid (3) of the case (1) opens outward, the convex portion of the rear projection (23) of the second hinge component (22) of the lid side frame member (21) (24) moves along the guide surface (14a) of the guide portion (14) of the rear wall panel side frame member (11), and the lid (3) moves outward of the second hinge component (22). A guide portion that swings around the tip of the convex portion (26 ) and has a guide surface (14a) having an arcuate cross section of the first hinge component (12) of the rear wall panel side frame member (11) . (14), which have short protrusions extending forwardly (20) is provided, the opening of the recess (19) of said first hinge component (12) Width (18), and from the tip of the rear projecting portion of the second hinge component (22) (23) is made as narrower than the width to the tip of the outer projection (26), a rear wall panel side The second hinge constituent part (22) on the side of the lid (3) fitted in the concave part for fitting (19 ) of the first hinge constituent part (12) of the frame member (11) is provided by the concave part (19) . A lid opening / closing device in the case , the lid (3) cannot be removed from the case (1) so that it cannot escape .

The opening (2) of the case (1) is provided at the upper edge of the rear wall panel side frame member (31) of the rear edge with a first hinge component (32) having a recess (33) opened upward, An engaging portion (35) extending rearward is provided at the upper edge portion of the front wall portion (34) of the concave portion (33), and the base portion of the front wall portion (34) is provided in the concave portion (33) from the rear edge of the opening. A guide surface (36) having an arcuate cross section is provided to cover the opening (2) of the case (1) (3) and obliquely rearward of the rear end of the side frame member (41) at the rear edge. A second hinge constituent part (42) having a bent part (43) having a substantially arc-shaped cross section bent inward and a folded engaging part (44) folded forward from the tip part thereof is provided. A forward folded engagement portion (44) of the second hinge component (42) of the lid (3) is provided in the recess (33) of the first hinge component (32) of the rear wall panel side frame member (31). When the lid (3) is in a horizontal state so as to cover the case opening (2). 4) is engaged with the engaging portion (35) of the opening front side edge of the recess (33), and when the lid (3) of the case (1) opens outward, the second side of the lid side frame member (41) The lid opening / closing device in the case, wherein the tip of the two hinge component (42) is guided by a guide surface (36) having an arcuate cross section in the recess (33).

The opening (2) of the case (1) The first hinge component (12) is provided on the rear wall panel side frame member (11) of the rear edge, and the lid (3) covers the opening (2) of the case (1). ) Is provided with a second hinge component (22) on the side frame member (21) at the rear edge, and the first hinge component (12) of the rear wall panel side frame member (11) is connected to the side frame member (21). 11) a front overhanging portion (13) extending forward and a guide portion (14) provided opposite to the inside of the front overhanging portion (13) and having a guide surface (14a) having an arcuate cross section. Thus, the first hinge component (12) is formed with a second hinge component fitting recess (19) having an opening (18) opening forward, and the front overhang (13 ) Is provided on the inner side of the portion near the tip of the step (16), and a guide surface (17) having a concave arc-shaped cross section is provided on the rear side of the stepped protrusion (16). ) The second hinge component (22) extends backward and the inner surface is a convex surface (24) having an arcuate cross section. The projecting part (23) and the outer projecting part (26) having an end surface (27) projecting outward from the tip end part of the rear projecting part (23) and having an arc-shaped end surface (27) at the tip. The second hinge component part (22) is provided with a first hinge component part recess (29) having an opening (28) that opens outward, and the first hinge component part The opening (18) of (12) is the same width as the width from the tip of the rearward projecting portion (23) of the second hinge component (22) to the tip of the outward convex portion (26) or slightly wider It has a width, and the rear projecting portion (23) and the outward projection (26) of the second hinge component (22) can be freely inserted and removed from the opening (18) of the first hinge component (12). In the opening (2) of the case (1), the recess (19) for fitting the first hinge component (12) of the panel side frame member (11) on the rear edge, and the lid (3) The second hinge component (22) of the side frame member (21) is fitted together, and the lid (3) covers the case opening (2). When in the horizontal state, the convex part (24) of the rearward projecting part (23) of the second hinge constituent part (22) is in the concave part (19) of the first hinge constituent part (12). The guide surface (14a) having an arcuate cross section is brought into contact with the guide surface (14a), and the end surface (27) having an arcuate cross section at the tip of the outer convex portion (26) is on the first hinge component (12) side. When the lid (3) of the case (1) is opened outward, the rear hinge of the second hinge component (22) of the lid side frame member (21) The convex surface portion (24) of the portion (23) moves along the guide surface (14a) of the guide portion (14) of the rear wall panel side frame member (11), and the lid (3) has the second hinge configuration. The second hinge structure of the lid side frame member (21) is configured to swing around the tip of the outer convex portion (26) of the portion (22) and, if necessary, after swinging of the lid (3). When the portion (22) is allowed to escape forward from the opening (18) of the recess (19) of the first hinge component (12), (3) have been made detachable, switchgear lid of the case.

The rear wall panel side frame member (11) having the first hinge component (12) and the lid side frame member (21) having the second hinge component (22) are made of an aluminum hollow extruded shape or a hard synthetic resin extrusion. The lid opening / closing device in the case according to any one of claims 1 to 3, which is made of a profile.