JP4361249B2

JP4361249B2 - Packaging container

Info

Publication number: JP4361249B2
Application number: JP2002228600A
Authority: JP
Inventors: 豊浦山; 雅史江口
Original assignee: ダイセルパックシステムズ株式会社
Priority date: 2002-08-06
Filing date: 2002-08-06
Publication date: 2009-11-11
Anticipated expiration: 2022-08-06
Also published as: JP2004067153A

Description

【０００１】
【発明の属する技術分野】
本発明は、簡単な操作でスムーズに容器本体と蓋体とを嵌合できる食品（菓子などを含む）などを収容するのに適した包装容器に関する。
【０００２】
【従来の技術】
菓子などの食品を収容する包装容器の１つとして、プラスチック製の容器本体と蓋体とがヒンジを介して一体化された容器などが用いられている。このような容器では、容器本体と蓋体との閉止作業を容易にするため、容器本体と蓋体とをスムーズに嵌合及び閉止できることが要求される。
【０００３】
図４は、従来の包装容器の一例を示す部分断面図であり、図５は、図４の包装容器の部分切欠斜視図である。この包装容器は、プラスチックシートを成形することにより形成されており、容器本体３２と蓋体３３とがヒンジ部３４を介して連結されている。容器本体３２は、収容凹部３５を有しており、この収容凹部は、底壁３６と、この底壁の周縁部から外方に傾斜して形成された側壁３７と、この傾斜側壁３７の上縁から側方に延び、かつ周縁部に形成された頂面３８を有する断面コ字状の凸部３９を有し、この凸部の外壁４０には凹状被嵌合部４３が形成されている。蓋体３３は、容器本体３２の収容凹部３５に対応する膨出部４４を有しており、この膨出部は、天壁４５と、この天壁の周縁部に外方に傾斜して形成された傾斜側壁４６と、前記容器本体３２の凸部３９に対応して傾斜側壁４６の周縁部に形成された断面Ｌ字状の折曲部４７とを有している。前記折曲部４７の壁面５０には前記容器本体３２の被嵌合部４３に対して嵌合可能な凸状嵌合部５２が形成されている。ヒンジ部３４の一方の端部には、第１の平坦部５３を介して蓋体３３の嵌合部５２に延びる第１の延出部５４が形成され、他方の端部には第２の平坦部５５を介して、容器本体３２の被嵌合部４３に延びる第２の延出部５６が形成されており、蓋体３３側の第１の平坦部５３と容器本体３２側の第２の平坦部５５とは高さが同レベルである。
【０００４】
このような容器では容器本体３２に対して、閉じ方向に蓋体３３を回動させて、嵌合部と被嵌合部とを嵌合させることができる。しかし、図５に示すように、容器本体３２に対する蓋体３３の閉じ動作に伴って、第１の平坦部５３と第２の平坦部５５とが接触した状態で、ヒンジ部３４に蓋体３３方向への引張り力が作用するため、嵌合部と被嵌合部とが位置ずれし、簡便かつ緊密に嵌合させるのが困難となる。
【０００５】
また、実用新案登録第２５９７９２３号公報には、前記のような一体型の容器において、ヒンジの容器本体側のヒンジ部有効長を蓋体側のヒンジ部有効長よりも短くすることにより、容器本体に形成された嵌合部と蓋体に形成された嵌合部とを互いに嵌合させて、１動作で閉止、包装することができる閉止嵌合容器が開示されている。
【０００６】
図６は、このような従来の包装容器の一例を示す部分断面図であり、図７は、図６の包装容器の部分切欠斜視図である。この包装容器は、プラスチックシートを成形することにより形成されており、容器本体６２と蓋体６３とがヒンジ部６４を介して連結されている。容器本体６２は、収容凹部６５を有しており、この収容凹部は、底壁６６と、この底壁の周縁部から外方に傾斜して形成された側壁６７と、この傾斜側壁６７の上縁から側方に延び、かつ周縁部に形成された頂面６８を有する断面コ字状の凸部６９を備えており、この凸部の外壁７０には凹状被嵌合部７３が形成されている。蓋体６３は、容器本体６２の収容凹部６５に対応する膨出部７４を有しており、この膨出部は、天壁７５と、この天壁の周縁部に外方に傾斜して形成された傾斜側壁７６と、前記容器本体６２の凸部６９に対応して傾斜側壁７６の周縁部に形成された断面Ｌ字状の折曲部７７とを有している。前記折曲部７７の壁面８０には前記容器本体６２の被嵌合部７３に対して嵌合可能な凸状嵌合部８２が形成されている。ヒンジ部６４の一方の端部には、第１の平坦部８３を介して蓋体６３の嵌合部８２に延びる第１の延出部８４が形成され、他方の端部には第２の平坦部８５を介して、容器本体６２の被嵌合部７３に延びる第２の延出部８６が形成されており、蓋体６３側の第１の平坦部８３が容器本体６２側の第２の平坦部８５より高さがｄ２だけ高くなっている。
【０００７】
このような容器では容器本体６２に対して、閉じ方向に蓋体６３を回動させて、嵌合部と被嵌合部とを嵌合させることができる。しかし、図７に示すように、容器本体６２に対する蓋体６３の閉じ動作に伴って、蓋体６３側のヒンジ部６４が上方に持ち上げられてヒンジ部６４が拡径し、嵌合部と被嵌合部とが位置ずれするとともに、収容物（特に流動物）がヒンジ部６４から漏れ易く、また逆にヒンジ部６４からほこりなどの異物が入り易くなる虞がある。また、容器本体側のヒンジ部有効長を蓋体側のヒンジ部有効長よりも短くしているため、容器本体と蓋体とが非平行状態に見え、デザイン性に劣る。
【０００８】
実開昭４９−３８６０３号公報では、蓋体と本体とで構成され、一部が連結部によって連結されている嵌合可能な容器において、本体の外周縁部と、蓋体の外周縁部と、本体及び連結部間の接続縁部とが同一平面上になるように形成され、蓋体の外周縁部の内側には立上がり部が、その内側には段部がそれぞれ形成され、蓋体の外周縁部のうち連結部に接続する接続縁部が前記段部と同一平面に形成された容器が開示されている。この容器では、本体側の接続縁部に比べて、蓋体側の接続縁部の高さが段部の分だけ低くなっている。実開昭６１−６６１０５号公報には、本体と被蓋とを蝶番で連結したフードパックにおいて、前記蝶番が本体側の幅が広く彎曲部が大きい蝶番と被蓋側の幅が狭く、彎曲面が小さい蝶番との２段の蝶番であり、被蓋の蝶番と接する縁以外の３辺の縁を延長して本体の周側縁が没入するように折り曲げられたパックが開示されている。しかし、これらの容器では、本体と蓋体とを一動作でスムーズに嵌合できない。また、後者のフードパックでは、蝶番部の断面が大きくなり、収容物が漏れたり、異物が侵入する虞がある。
【０００９】
【発明が解決しようとする課題】
従って、本発明の目的は、容器の外観を損なうことなく、１つの閉じ動作で容器本体の開口部を蓋体で閉止できる包装容器を提供することにある。
【００１０】
本発明の他の目的は、簡単な操作でスムーズに嵌合及び閉止できる包装容器を提供することにある。
【００１１】
【課題を解決するための手段】
本発明者らは、前記課題を達成するため鋭意検討した結果、容器本体と蓋体とがヒンジ部で連結された包装容器において、ヒンジ部の縦方向の断面において、ヒンジ部と蓋体との間に形成された平坦部に対して、ヒンジ部と容器本体との間に形成された傾斜部の上端の高さを高くすることにより、１つの閉じ動作で容器本体のコーナー部の被嵌合部に対して、蓋体のコーナー部の嵌合部を簡便かつスムーズに嵌合させることができることを見出し、本発明を完成した。
【００１２】
すなわち、本発明の包装容器は、コーナー部に被嵌合部が形成された容器本体と、この容器本体の開口部を開閉可能であり、かつコーナー部に前記容器本体の被嵌合部に対して嵌合可能な嵌合部が形成された蓋体と、前記容器本体と蓋体とを連結するヒンジ部とで構成されている。そして、前記ヒンジ部の一方の縁部から第１の平坦部を介して前記蓋体の嵌合部に延びる第１の延出部と、他方の縁部から傾斜部を介して前記容器本体の被嵌合部に延びる第２の延出部とを備えており、前記蓋体が開いた状態で、前記容器本体の底面及び前記蓋体の天面を同一面又は平行に位置させたとき、前記ヒンジ部の縦方向の断面において、前記第１の平坦部よりも前記傾斜部の上端の高さが高い。そのため、傾斜部が余裕部として機能し、蓋体の閉じ動作（外方側での嵌合動作）に伴って、第１の平坦部が傾斜部に向かって回動するとともにヒンジ部側で被嵌合部に対して嵌合部が嵌合し、外方側の被嵌合部と嵌合部とで嵌合する。従って、１つの閉じ動作（ワンタッチ動作）により容器本体と蓋体とをそれぞれのコーナー部で嵌合できる。さらに、前記容器本体の底面と前記蓋体の天面とを同一面又は平行に位置させることができるので、外観を損ねることもない。さらには、前記容器本体及び蓋体において、ヒンジ部側のコーナー部に被嵌合部及び嵌合部がそれぞれ形成され、ヒンジ部に対して外方側のコーナー部又はヒンジ部に対して対向する外側部に被嵌合部及び嵌合部がそれぞれ形成されている。前記ヒンジ部側のコーナー部はアール状に形成されており、このアール状コーナー部の両端から延びる垂線の交点を中心とし、この交点からヒンジ部へ延ばした垂線の角度を０°としたとき、ヒンジ部側の嵌合部が、アール状コーナー部のうち、角度０〜６０°（例えば、０〜４５°）の範囲に形成されている。このような範囲にヒンジ部側の嵌合部を形成することによりヒンジ部側の嵌合部と被嵌合部との嵌合を容易にでき、外方側の嵌合部と被嵌合部とを嵌合させるという１つの閉じ動作で、ヒンジ部側の嵌合部と被嵌合部とをより円滑に嵌合できる。
【００１３】
前記縦方向の断面において、傾斜部の上端は、第１の平坦部に比べて０．５〜４ｍｍ高くてもよく、前記蓋体が開いた状態で、前記容器本体の底面及び前記蓋体の天面を同一面又は平行に位置させたとき、傾斜部の角度は１〜６０°であってもよい。蓋体が開いた状態で、容器本体の底面及び前記蓋体の天面を同一面又は平行に位置させたとき、傾斜部の断面は直線状又は上方に湾曲した曲線状であってもよい。
【００１４】
前記容器本体は、収容凹部と、この収容凹部の側壁の上縁から側方に延び、かつ周縁部に形成された断面コ字状の凸部と、この凸部の外壁の周縁部から側方に延びるフランジと、前記凸部の外壁に形成された凹状被嵌合部とで構成してもよく、蓋体は、天壁と、この天壁の周縁部から延びる側壁と、この側壁の周縁部に形成され、かつ前記容器本体の凸部に対応する断面Ｌ字状の折曲部と、この折曲部の周縁部から側方に延びるフランジとで構成してもよい。前記折曲部は、前記容器本体の凸部の頂面に対応し、かつ前記蓋体の側壁から側方に延びる第２の平坦部と、前記容器本体の凸部の外壁に対応し、かつ前記第２の平坦部の周縁部から延びる壁部とを有していてもよい。このような前記折曲部の壁部に凸状嵌合部が形成されている包装容器において、ヒンジ部の縦方向の断面において、傾斜部全体の高さは、前記容器本体側のフランジ又は第２の延出部よりも低くてもよい。
【００１５】
前記容器本体及び蓋体において、ヒンジ部側のコーナー部に被嵌合部及び嵌合部をそれぞれ形成し、ヒンジ部に対して外方側のコーナー部に被嵌合部及び嵌合部をそれぞれ形成し、前記外方側の被嵌合部に対して嵌合部を嵌合させる閉じ動作に伴って、前記ヒンジ部側の被嵌合部に対して、嵌合部は嵌合可能であってもよい。容器本体に対する蓋体の閉じ動作に伴って、第１の平坦部と傾斜部とが少なくとも部分的に接触してもよく、第１の延出部と第２の延出部とが接触可能であってもよい。
【００１６】
前記包装容器は、ヒンジ部に対して外方側のコーナー部がアール状に形成され、このアール状コーナー部に被嵌合部及び嵌合部がそれぞれ形成されていてもよい。
【００１７】
なお、本明細書において、「被嵌合部」と「嵌合部」とは相対的な用語であり、互いに嵌合可能である限り、容器本体に嵌合部を形成し、蓋体に被嵌合部を形成してもよい。
【００１８】
【発明の実施の形態】
以下、添付図面を参照しつつ、本発明をさらに詳細に説明する。
【００１９】
図１は、本発明の包装容器の一例を示す概略斜視図であり、図２は、図１の要部断面図であり、図３は、図２において、蓋体を閉じた状態での要部切欠斜視図である。
【００２０】
包装容器１は、プラスチックシートを成形することにより平面方形状に形成されており、食品などの収容物を収容するためのプラスチック製容器本体２と、この容器本体２の開口部を開閉可能であるプラスチック製蓋体３と、前記容器本体２と蓋体３とを連結するプラスチック製ヒンジ部４とで構成されている。容器本体２及び蓋体３は、それぞれ平面形状が方形状（この例では長方形状）に形成されている。
【００２１】
前記容器本体２は、収容凹部５を有しており、この収容凹部は、底壁6aと、この底壁6aの周縁部に形成された側壁７とで構成されている。前記容器本体２は、さらに前記側壁７の上縁から側方に延び、かつ周縁部に形成された頂面８を有する断面コ字状の凸部９と、この凸部９の外壁１０の周縁部から側方に延びるフランジ１１とを有している。
【００２２】
前記容器本体２の開口部を開閉可能な蓋体３は、前記収容凹部５に対応して形成された膨出部１４を備えており、この膨出部は、天壁15aと、この天壁15aの周縁部から延びる側壁１６とで構成されている。前記側壁１６の周縁部には、前記容器本体２の凸部９に対応して形成された断面Ｌ字状の折曲部１７が形成され、この折曲部の周縁部には、この周縁部から側方に延びるフランジ１８が形成されている。
【００２３】
前記折曲部１７は、前記容器本体２の凸部９を囲撓又は覆うことができ、凸部９に対して接触可能であってもよい。すなわち、前記折曲部１７は、前記容器本体２の凸部９の頂面８に対応し、かつ前記側壁１６から側方に延びる平坦部（第２の平坦部）１９と、前記容器本体２の凸部９の外壁１０に対応し、かつ前記第２の平坦部１９の周縁部から延びる壁部２０とを有している。
【００２４】
前記ヒンジ部４は、縦方向の断面において、湾曲した凹状の形状を有している。また、蓋体３の開閉動作を容易にするため、ヒンジ部４の幅は容器１の外縁近くで湾曲して、狭まっている。そのため、収容物の漏れを防いで、外部からの異物の侵入を防止できる。
【００２５】
前記容器本体２は、アール状コーナー部１２において、凸部９の外壁１０に、被嵌合部（凹状被嵌合部）１３を備えており、前記蓋体３は、アール状コーナー部２１において、折曲部１７の壁部２０に、前記容器本体２の被嵌合部１３に対して嵌合可能な嵌合部（凸状嵌合部）２２を備えている。
【００２６】
より詳細には、容器本体２及び蓋体３において、ヒンジ部４側のコーナー部12a,12b,21a,21bには、被嵌合部13a,13b及び嵌合部22a,22bがそれぞれ形成され、ヒンジ部４に対して外方側のコーナー部12c,12d,21c,21dには、被嵌合部13c,13d及び嵌合部22c,22dがそれぞれ形成されている。
【００２７】
蓋体３のうち、ヒンジ部４側のコーナー部において、容器本体２の凸部９と接触することなく、容器本体２への蓋体３の閉じ動作を容易にするため、凸状嵌合部22a,22bはヒンジ部４側に形成されており、蓋体３の側部（ヒンジ部４に隣接する側部）には、凸状嵌合部が実質的に形成されていない。すなわち、ヒンジ部４側のコーナー部において、凸状嵌合部を容器の側部に形成すると、ワンタッチ嵌合に大きな力を必要とする。図１の例では、アール状コーナー部において、前記ヒンジ部４側の被嵌合部及び嵌合部は、前記アール状コーナー部の両端から延びる垂線の交点を中心とし、この交点からヒンジ部４へ延ばした垂線の角度を０°としたとき、角度０〜４５°の領域に凸状嵌合部22a,22bが形成されている。
【００２８】
また、ヒンジ部３に対して対向する辺（外方側）のコーナー部では、嵌合強度を高めるため、嵌合部22c,22d及び被嵌合部13c,13dは、コーナー部全体にわたって湾曲して形成されている。
【００２９】
前記蓋体３のうち、ヒンジ部４側のコーナー部12a,12b,21a,21bには、前記ヒンジ部４の一方の端部から平坦部（第１の平坦部）２３を介して前記蓋体３の嵌合部22a,22bに延びる第１の延出部２４が形成され、容器本体のうちヒンジ部４の他方の端部から傾斜部２５を介して前記容器本体２の被嵌合部13a,13bに延びる第２の延出部２６とが形成されている。前記第１の延出部２４は、第１の平坦部２３からほぼ直交する方向に延び、凸状嵌合部22a,22bに至っている。また、前記傾斜部２５は、開放状態において、ヒンジ部４から容器本体の開口部に向かって、斜め上方に延びており、第２の延出部２６は傾斜部２５の上端から第１の延出部２４とほぼ平行に上方に延び、凹状被嵌合部13a,13bに至っている。
【００３０】
そして、前記蓋体３が開いた状態において、前記容器本体２の底面6b及び前記蓋体３の天面15bを同一面又は平行に位置させたとき、前記ヒンジ部４の縦方向の断面において、前記第１の平坦部２３よりも前記傾斜部２５の上端の高さが高くなっている。図１及び図２の例では、傾斜部２５の上端は、蓋体３側の第１の平坦部２３に比べて、０．５〜３ｍｍ程度高くなっている。また、前記蓋体３が開いた状態において、前記容器本体２の底面6b及び前記蓋体３の天面15bを同一面又は平行に位置させたとき、上記底面６ｂ又は天面15bを基準として、傾斜部２５の角度は１０〜４５°程度である。
【００３１】
なお、把持性を高め、蓋体３を容器本体２から外すための嵌合解除操作を容易にするため、ヒンジ部４に対して外方側のコーナーの縁部27,28には、エンボス加工などの粗面加工が施されている。
【００３２】
このような容器では、縦方向の断面において、容器本体側の傾斜部の上端の高さを第１の平坦部の高さより高くすることにより、蓋体の閉じ動作に伴って、ヒンジ部が変形しても、傾斜部と第１の平坦部とを効率よく接触でき、ヒンジ部に対して外方側の被嵌合部とこの被嵌合部に対応する嵌合部との嵌合のみならず、ヒンジ部側の被嵌合部及び嵌合部までもスムーズに嵌合させることができる。すなわち、容器本体２への蓋体３の閉じ動作に伴って、前記外方側の被嵌合部13c,13dと、嵌合部22c,22dとの嵌合に先だって、ヒンジ部側の被嵌合部13a,13bと嵌合部22a,22bとをそれぞれ嵌合可能である。そのため、前記外方側の被嵌合部13c,13dに対する嵌合部22c,22dの嵌合動作に伴って、前記ヒンジ部側の被嵌合部13a,13bに対して、嵌合部22a,22bを嵌合可能である。また、容器本体２に対する蓋体３の閉じ動作に伴って、第１の平坦部23と傾斜部25とは接触可能であり、第１の延出部24と第２の延出部26とも接触可能である。
【００３３】
また、ヒンジ部４の縦方向の断面において、前記容器本体２側のフランジ１１又は第２の延出部２６より傾斜部２５の高さは低くなっている。
【００３４】
本発明において、傾斜部上端と第１の平坦部との高低差は前記範囲に限定されず、例えば、傾斜部の上端は、第１の平坦部に比べて、０．５〜４ｍｍ、好ましくは１〜３．５ｍｍ、さらに好ましくは１．５〜３ｍｍ程度高くしてもよい。
【００３５】
傾斜部の断面形状は、特に制限されず、蓋体が開いた状態で、前記容器本体の底面及び前記蓋体の天面を同一面又は平行に位置させたとき、図２に示すように直線状であってもよく、湾曲した曲線状（上方に湾曲した曲線状など）に傾斜していてもよい。傾斜部の傾きは、前記範囲に限定されず、前記蓋体が開いた状態で、前記容器本体の底面及び前記蓋体の天面を同一面又は平行に位置させたとき、例えば、１〜６０°、好ましくは２〜５０°（例えば、５〜５０°）、さらに好ましくは２〜４８°（１０〜４８°）、特に１５〜４５°程度であってもよい。なお、傾斜部の断面形状が湾曲した曲線状である場合、傾斜部の傾きとは、傾斜部の下端と上端とを結ぶ直線の傾きとして表わすことができる。
【００３６】
容器本体に対する蓋体の閉じ動作に伴って、容器本体側の傾斜部と第１の平坦部とは少なくとも一部が接触可能であってもよく、全面で接触させてもよい。
【００３７】
前記傾斜部は、容器本体側のフランジの延長部として構成してもよく、前記第１の平坦部は、蓋体側のフランジの延長として構成してもよい。従って、容器本体において、傾斜部と第２の延出部との間には、フランジが形成されていてもよく、傾斜部とフランジとが一体化されていてもよい。同様に、蓋体において、平坦部と第１の延出部との間には、フランジが形成されていてもよく、前記第１の平坦部とフランジとが一体化されていてもよい。
【００３８】
このような容器本体及び蓋体が連結されている一体型容器において、容器本体に対する蓋体の閉じ動作に伴って、外方側の嵌合部及び被嵌合部よりも、ヒンジ部側の嵌合部及び被嵌合部が早く嵌合する必要がある。この嵌合操作において、ヒンジ部側のコーナー部全体に凸状嵌合部を形成すると、嵌合に対する抵抗が生じ易い。そのため、前記コーナー部において、少なくともヒンジ部側の嵌合部は、ヒンジ部側に隣接する側部よりもヒンジ部側に形成することにより、外方側での嵌合に先立って、ヒンジ部側での嵌合を円滑に行うことができ、主に外方側の嵌合を利用して閉じ動作を行うだけで、ヒンジ部側での嵌合をもスムーズに行うことができる。
【００３９】
ヒンジ部側の嵌合部は、コーナー部（アール状コーナー部など）のうち、ヒンジ部側に形成すればよく、特に前記範囲に限定されず、前記コーナー部の両端から延びる垂線の交点を中心とし、この交点からヒンジ部４へ延ばした垂線の角度を０°としたとき、０〜６０°（例えば、５〜６０°）、好ましくは１０〜６０°、さらに好ましくは１０〜５０°程度の範囲、特に４５°以下（１０〜４５°程度）の範囲に形成できる。
【００４０】
ヒンジ部側の被嵌合部、並びに外方側の嵌合部及び被嵌合部は、特に制限されず、コーナー部（アール状コーナー部など）の全体に亘って形成でき、前記コーナー部の両端から延びる垂線の交点を中心とし、この交点からヒンジ部４へ延ばした垂線の角度を０°としたとき、例えば、−２０°〜１１０°、好ましくは−１０°〜１００°、さらに好ましくは０〜９０°程度の範囲に形成できる。なお、ヒンジ部側の被嵌合部は、前記ヒンジ部側の嵌合部と同様の範囲でヒンジ部側に形成してもよい。
【００４１】
外方側の嵌合部及び被嵌合部の形状及びサイズは、角度４５°を中心として、対称又は非対称のいずれであってもよい。また、外方側の嵌合部及び被嵌合部は、コーナー部に限らず、容器本体及び蓋体のうち、ヒンジ部に対して対向する外側部に形成してもよい。さらに、容器の形状によっては、容器本体及び蓋体のうち、ヒンジ部側及び外方側にそれぞれ少なくとも１つの嵌合部及び被嵌合部を形成してもよい。
【００４２】
なお、本発明の包装容器は、前記縦方向の断面において、容器本体側の傾斜部の上端の高さを蓋体側の第１の平坦部の高さより高くすればよく、蓋体による容器本体の閉塞操作に伴って、容器本体の被嵌合部と蓋体の嵌合部とをスムーズに嵌合可能である限り、容器本体及び蓋体の各部位の構造および形状は特に制限されない。例えば、前記容器本体及び蓋体の側壁は、傾斜した傾斜壁であってもよい。前記容器本体の側壁は、直線状に傾斜していてもよく、容器本体の外方へ湾曲していてもよい。外方に傾斜している場合、傾斜壁の傾斜角度は、例えば、底壁からの角度２０〜９０°程度、好ましくは３０〜８５°程度、さらに好ましくは３５〜８０°程度の範囲から選択できる。また、蓋体は、前記容器本体の収容凹部を覆うためのカバー部を備えていればよく、このカバー部は、前記膨出部のように外方に膨出している必要はなく、収容物の種類や量などに応じて適当な形状に形成できる。
【００４３】
容器１を傾けても食品などの収容物が位置ずれするのを抑制するため、収容凹部には、収容凹部を複数個に区分けする仕切を設けてもよい。仕切は、食品などの収容物のサイズ又は形状に合わせて形成してもよい。また、同様の目的で、容器本体の底壁及び側壁には、凹溝、リブ、又は突起部などを形成してもよい。凹溝、リブや突起部などは、規則的又はランダムに複数個形成してもよく、それぞれ組合せて形成してもよい。また、突起部は、収容物のずれや移動を防止可能な形状であればよく、三角形状、四角形状（台形状、長方形状など）などの多角形状、半円形状、半楕円形状などの種々の形状の突起部などであってもよい。
【００４４】
容器本体及び蓋体のフランジは、必ずしも必要ではなく、いずれか一方の部材にのみ形成してもよい。嵌合解除操作を容易にするためには、フランジを形成するのが有利である。従って、嵌合解除操作を容易にするため、容器本体及び／又は蓋体の周縁部の一部、例えば、外方側にのみフランジを形成したり、外方側のコーナー部にのみフランジを形成し、つまみとして利用してもよい。
【００４５】
容器本体の外方側のコーナーの縁部において、滑り止め加工（粗面加工）は必ずしも必要ではない。また、容器本体及び蓋体の双方の外方側のコーナーの縁部に滑り止め加工してもよい。
【００４６】
さらに、前記容器本体の被嵌合部に対して前記蓋体の嵌合部は、互いに実質的に対応又は適合した位置およびサイズ（平面形状において）で形成されていればよく、被嵌合部及び嵌合部の形状及び構造も前記嵌合凸部及び嵌合凹部に限らず、種々の形状や構造が採用できる。
【００４７】
容器の平面形状は、ヒンジ部を有する限り、方形状の他、三角形状、五角形状などの多角形状、円形状、楕円形状などであってもよい。
【００４８】
本発明の包装容器において、容器本体、蓋体、ヒンジ部は、それぞれ透明、半透明又は不透明であってもよいが、少なくともプラスチック製蓋体は透明であるのが好ましく、通常、いずれも透明であるのが好ましい。
【００４９】
前記包装容器において、容器本体、蓋体、ヒンジ部は、それぞれ異素材で形成してもよいが、通常は、同一又は同系統の素材で形成でき、例えば、紙（ラミネート紙や撥水紙などを含む）で形成してもよく、プラスチックシートで形成してもよい。包装容器は、通常、プラスチックシートで形成する場合が多く、包装用容器は、射出成形などの方法で成形してもよいが、通常、種々のプラスチックシート（ポリオレフィン系樹脂シート、スチレン系樹脂シート、ハロゲン化ビニル系樹脂シート、ポリエステル系樹脂シートなどの熱可塑性樹脂シートなど）を慣用の方法（真空成形、吹き込み成形、圧空成形、マッチドモールド成形などの熱成形法）で成形加工することにより形成できる。
【００５０】
本発明の包装容器は、種々の収容物、例えば、食品（菓子類も含む）などを収容するための容器として有用である。
【００５１】
【発明の効果】
本発明では、容器本体と蓋体とがヒンジ部で連結された一体型容器において、ヒンジ部を介して形成された容器本体側の傾斜部と蓋体側の第１の平坦部との高さの関係において、前記傾斜部の上端と前記第１の平坦部に対して高くするので、容器の外観を損なうことなく、１つの閉じ動作で容器本体の開口部を蓋体で閉止できる。また、簡単な操作でスムーズに嵌合及び閉止できる。
【図面の簡単な説明】
【図１】図１は本発明の包装容器の一例を示す概略斜視図である。
【図２】図２は図１の包装容器の要部断面図である。
【図３】図３は図１の要部切欠斜視図である。
【図４】図４は、従来の包装容器の一例を示す部分断面図である。
【図５】図５は、図４の包装容器の部分切欠斜視図である。
【図６】図６は、従来の包装容器の他の例を示す部分断面図である。
【図７】図７は、図６の包装容器の部分切欠斜視図である。
【符号の説明】
１…包装容器
２…容器本体
３…蓋体
４…ヒンジ部
６ｂ…容器本体の底面
１３，13a，13b，13c，13d…被嵌合部
15b…蓋体の天面
２２，22a，22b，22c，22d…嵌合部
２３…第１の平坦部
２４…第１の延出部
２５…傾斜部
２６…第２の延出部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging container suitable for housing food (including confectionery) and the like that can smoothly fit a container body and a lid body with a simple operation.
[0002]
[Prior art]
As one of packaging containers for storing food such as confectionery, a container in which a plastic container body and a lid are integrated via a hinge is used. In such a container, in order to facilitate the closing operation between the container body and the lid body, it is required that the container body and the lid body can be smoothly fitted and closed.
[0003]
4 is a partial cross-sectional view showing an example of a conventional packaging container, and FIG. 5 is a partially cutaway perspective view of the packaging container of FIG. The packaging container is formed by molding a plastic sheet, and the container main body 32 and the lid 33 are connected via a hinge part 34. The container main body 32 has an accommodation recess 35, and the accommodation recess is formed on the bottom wall 36, a side wall 37 that is inclined outward from the peripheral edge of the bottom wall, and the upper side of the inclination side wall 37. A convex portion 39 having a U-shaped cross section extending laterally from the edge and having a top surface 38 formed at the peripheral portion is formed, and a concave fitting portion 43 is formed on the outer wall 40 of the convex portion. . The lid 33 has a bulging portion 44 corresponding to the housing recess 35 of the container main body 32, and this bulging portion is formed on the top wall 45 and the peripheral portion of the top wall so as to be inclined outward. And a bent portion 47 having an L-shaped cross section formed on the peripheral edge of the inclined side wall 46 corresponding to the convex portion 39 of the container main body 32. A convex fitting portion 52 that can be fitted to the fitted portion 43 of the container main body 32 is formed on the wall surface 50 of the bent portion 47. A first extending portion 54 extending to the fitting portion 52 of the lid body 33 via the first flat portion 53 is formed at one end portion of the hinge portion 34, and a second extending portion is formed at the other end portion. A second extending portion 56 extending to the fitted portion 43 of the container main body 32 is formed via the flat portion 55, and the first flat portion 53 on the lid 33 side and the second flat portion 53 on the container main body 32 side are formed. The height of the flat portion 55 is the same level.
[0004]
In such a container, the lid 33 can be rotated in the closing direction with respect to the container body 32 so that the fitting portion and the fitted portion can be fitted. However, as shown in FIG. 5, with the closing operation of the lid 33 with respect to the container body 32, the lid 33 is attached to the hinge portion 34 in a state where the first flat portion 53 and the second flat portion 55 are in contact with each other. Since the pulling force in the direction acts, the fitting portion and the fitted portion are displaced from each other, and it is difficult to make the fitting simple and tight.
[0005]
In addition, in the utility model registration No. 2597923, in the integrated container as described above, the hinge part effective length on the container body side of the hinge is made shorter than the hinge part effective length on the lid side, thereby A closed fitting container is disclosed in which the formed fitting portion and the fitting portion formed on the lid are fitted to each other, and can be closed and packaged in one operation.
[0006]
FIG. 6 is a partial sectional view showing an example of such a conventional packaging container, and FIG. 7 is a partially cutaway perspective view of the packaging container of FIG. This packaging container is formed by molding a plastic sheet, and the container main body 62 and the lid 63 are connected via a hinge part 64. The container main body 62 has an accommodating recess 65, which accommodates a bottom wall 66, a side wall 67 that is inclined outward from the peripheral edge of the bottom wall, and an upper side of the inclined side wall 67. A convex portion 69 having a U-shaped cross-section having a top surface 68 extending from the edge to the side and having a peripheral surface is provided, and a concave fitting portion 73 is formed on the outer wall 70 of the convex portion. Yes. The lid 63 has a bulging portion 74 corresponding to the housing recess 65 of the container main body 62, and this bulging portion is formed to be inclined outward on the top wall 75 and the peripheral edge of the top wall. And a bent portion 77 having an L-shaped cross section formed at the peripheral edge of the inclined side wall 76 corresponding to the convex portion 69 of the container main body 62. A convex fitting portion 82 that can be fitted to the fitted portion 73 of the container main body 62 is formed on the wall surface 80 of the bent portion 77. A first extending portion 84 extending to the fitting portion 82 of the lid body 63 via the first flat portion 83 is formed at one end portion of the hinge portion 64, and a second extending portion is formed at the other end portion. A second extending portion 86 extending to the fitted portion 73 of the container main body 62 is formed via the flat portion 85, and the first flat portion 83 on the lid 63 side is the second extending portion on the container main body 62 side. The height of the flat portion 85 is higher by d2.
[0007]
In such a container, the lid 63 can be rotated in the closing direction with respect to the container body 62 so that the fitting portion and the fitted portion can be fitted. However, as shown in FIG. 7, with the closing operation of the lid 63 with respect to the container body 62, the hinge 64 on the lid 63 side is lifted upward, the hinge 64 expands in diameter, and the fitting portion and the covered portion are covered. There is a possibility that the fitting part is displaced, and the contained material (particularly fluid) is likely to leak from the hinge part 64, and conversely, foreign matters such as dust can easily enter from the hinge part 64. Further, since the effective length of the hinge portion on the container body side is shorter than the effective length of the hinge portion on the lid body side, the container main body and the lid body appear to be in a non-parallel state, resulting in poor design.
[0008]
In Japanese Utility Model Laid-Open No. 49-38603, in a fitable container that is configured by a lid and a main body, and a part thereof is connected by a connecting portion, an outer peripheral edge of the main body, an outer peripheral edge of the lid, The connecting edge between the main body and the connecting portion is formed on the same plane, the rising portion is formed on the inner side of the outer peripheral edge of the lid, and the step portion is formed on the inner side thereof. A container is disclosed in which a connection edge portion connected to a connecting portion of the outer peripheral edge portion is formed in the same plane as the stepped portion. In this container, the height of the connection edge on the lid side is lower by the amount of the step than the connection edge on the main body side. Japanese Utility Model Laid-Open No. 61-66105 discloses a food pack in which a main body and a cover are connected by a hinge, wherein the hinge has a large width on the main body side and a large bent portion, and a narrow width on the cover side. Is a two-stage hinge with a small hinge, and a pack is disclosed that is bent so that the edges on the three sides other than the edge in contact with the hinge of the lid are extended and the peripheral edge of the main body is immersed. However, in these containers, the main body and the lid cannot be smoothly fitted in one operation. Further, in the latter food pack, the hinge section has a large cross section, and there is a risk that the contents may leak or foreign matter may enter.
[0009]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a packaging container that can close an opening of a container body with a lid by one closing operation without impairing the appearance of the container.
[0010]
Another object of the present invention is to provide a packaging container that can be smoothly fitted and closed by a simple operation.
[0011]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above-mentioned problems, the present inventors have found that in the packaging container in which the container main body and the lid body are connected by the hinge portion, in the longitudinal section of the hinge portion, the hinge portion and the lid body. The corner portion of the container body is fitted by one closing operation by increasing the height of the upper end of the inclined portion formed between the hinge part and the container body with respect to the flat part formed therebetween. It was found that the fitting part of the corner part of the lid can be easily and smoothly fitted to the part, and the present invention has been completed.
[0012]
That is, the packaging container of the present invention can open and close the container main body in which the fitted portion is formed in the corner portion, and the opening portion of the container main body, and the corner portion with respect to the fitted portion of the container main body. And a lid having a fitting part that can be fitted, and a hinge part that connects the container body and the lid. And the 1st extension part extended from the one edge part of the said hinge part via the 1st flat part to the fitting part of the said cover body, and the said container main body via an inclination part from the other edge part A second extending portion extending to the fitted portion, and with the lid open, when the bottom surface of the container body and the top surface of the lid are positioned on the same plane or in parallel, In the longitudinal section of the hinge portion, the height of the upper end of the inclined portion is higher than that of the first flat portion. Therefore, the inclined portion functions as a margin portion, and the first flat portion rotates toward the inclined portion and is covered on the hinge portion side in accordance with the closing operation (fitting operation on the outer side) of the lid. A fitting part fits with respect to a fitting part, and it fits by the to-be-fitted part and fitting part of an outer side. Therefore, the container main body and the lid can be fitted to each corner by one closing operation (one-touch operation). Furthermore, since the bottom surface of the container body and the top surface of the lid body can be positioned on the same plane or in parallel, the appearance is not impaired.Further, in the container main body and the lid body, a fitted part and a fitting part are formed at the corner part on the hinge part side, respectively, and the outer corner part or the hinge part is opposed to the hinge part. A fitted part and a fitting part are formed on the outer side. The corner part on the hinge part side is formed in a round shape, centering on the intersection of perpendiculars extending from both ends of the rounded corner part, and when the angle of the perpendicular extending from the intersections to the hinge part is 0 °, The fitting part on the hinge part side is formed in an angle range of 0 to 60 ° (for example, 0 to 45 °) in the rounded corner part. By forming the fitting part on the hinge part side in such a range, the fitting part on the hinge part side and the fitting part can be easily fitted, and the fitting part on the outer side and the fitting part can be made. The fitting part on the hinge part side and the fitted part can be fitted more smoothly by one closing operation of fitting the two.
[0013]
In the cross section in the longitudinal direction, the upper end of the inclined portion may be 0.5-4 mm higher than the first flat portion, and the bottom of the container body and the lid of the lid with the lid open. When the top surface is positioned on the same plane or in parallel, the angle of the inclined portion may be 1 to 60 °. When the bottom surface of the container body and the top surface of the lid body are positioned in the same plane or in parallel with the lid body open, the cross section of the inclined portion may be linear or curved upward.
[0014]
The container body includes a receiving recess, a convex portion having a U-shaped cross section formed on the peripheral edge and extending laterally from the upper edge of the side wall of the receiving recess, and a lateral side from the peripheral edge of the outer wall of the convex portion. And a concave mating portion formed on the outer wall of the convex portion. The lid body has a top wall, a side wall extending from the peripheral edge of the top wall, and a peripheral edge of the side wall. A bent portion having an L-shaped cross section corresponding to the convex portion of the container main body and a flange extending laterally from the peripheral edge of the bent portion may be formed. The bent portion corresponds to the top surface of the convex portion of the container body, corresponds to the second flat portion extending laterally from the side wall of the lid, and corresponds to the outer wall of the convex portion of the container body; and You may have a wall part extended from the peripheral part of a said 2nd flat part. In the packaging container in which the convex fitting part is formed on the wall part of the bent part, the height of the entire inclined part in the longitudinal section of the hinge part is the flange on the container main body side or the second part. It may be lower than the two extending portions.
[0015]
In the container main body and the lid body, the fitted portion and the fitting portion are respectively formed in the corner portion on the hinge portion side, and the fitted portion and the fitting portion are respectively provided in the corner portion on the outer side with respect to the hinge portion. The fitting portion can be fitted to the fitting portion on the hinge portion side in accordance with the closing operation of forming and fitting the fitting portion to the fitting portion on the outer side. May be. The first flat part and the inclined part may be at least partially in contact with the closing operation of the lid with respect to the container body, and the first extension part and the second extension part can be in contact with each other. There may be.
[0016]
As for the said packaging container, the corner part of the outer side with respect to a hinge part is formed in a round shape, and the to-be-fitted part and the fitting part may be formed in this rounded corner part, respectively.
[0017]
In this specification, “fitting part” and “fitting part” are relative terms. As long as they can be fitted to each other, a fitting part is formed on the container body, and the lid is covered. A fitting part may be formed.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
[0019]
FIG. 1 is a schematic perspective view showing an example of a packaging container according to the present invention, FIG. 2 is a cross-sectional view of the main part of FIG. 1, and FIG. 3 is a schematic view of FIG. It is a part notch perspective view.
[0020]
The packaging container 1 is formed into a flat rectangular shape by molding a plastic sheet, and can open and close a plastic container body 2 for storing a container such as food and an opening of the container body 2. A plastic lid 3 and a plastic hinge 4 for connecting the container body 2 and the lid 3 are configured. The container body 2 and the lid body 3 are each formed in a square shape (in this example, a rectangular shape) in plan view.
[0021]
The said container main body 2 has the accommodation recessed part 5, and this accommodation recessed part is comprised by the bottom wall 6a and the side wall 7 formed in the peripheral part of this bottom wall 6a. The container body 2 further extends from the upper edge of the side wall 7 to the side, and has a U-shaped convex portion 9 having a top surface 8 formed at the peripheral edge portion, and the peripheral edge of the outer wall 10 of the convex portion 9. And a flange 11 extending laterally from the portion.
[0022]
The lid body 3 capable of opening and closing the opening of the container body 2 includes a bulging portion 14 formed corresponding to the housing recess 5, and the bulging portion includes a ceiling wall 15 a and the ceiling wall. It is comprised by the side wall 16 extended from the peripheral part of 15a. A bent portion 17 having an L-shaped cross section formed corresponding to the convex portion 9 of the container main body 2 is formed on the peripheral portion of the side wall 16, and the peripheral portion of the bent portion includes the peripheral portion. A flange 18 extending from the side to the side is formed.
[0023]
The bent portion 17 may surround or cover the convex portion 9 of the container body 2 and may be able to contact the convex portion 9. That is, the bent portion 17 corresponds to the top surface 8 of the convex portion 9 of the container main body 2 and extends laterally from the side wall 16 and the container main body 2. And a wall portion 20 corresponding to the outer wall 10 of the convex portion 9 and extending from the peripheral edge portion of the second flat portion 19.
[0024]
The hinge portion 4 has a curved concave shape in a longitudinal section. Further, in order to facilitate the opening / closing operation of the lid 3, the width of the hinge portion 4 is curved and narrowed near the outer edge of the container 1. Therefore, it is possible to prevent leakage of the contents and prevent foreign matter from entering from the outside.
[0025]
The container body 2 includes a fitting portion (concave fitting portion) 13 on the outer wall 10 of the convex portion 9 at the round corner portion 12, and the lid 3 is provided at the round corner portion 21. The wall portion 20 of the bent portion 17 includes a fitting portion (convex fitting portion) 22 that can be fitted to the fitted portion 13 of the container body 2.
[0026]
More specifically, in the container body 2 and the lid body 3, the fitted portions 13a, 13b and the fitted portions 22a, 22b are respectively formed in the corner portions 12a, 12b, 21a, 21b on the hinge portion 4 side. The corners 12c, 12d, 21c, 21d on the outer side with respect to the hinge part 4 are formed with fitted parts 13c, 13d and fitting parts 22c, 22d, respectively.
[0027]
In order to facilitate the closing operation of the lid body 3 to the container body 2 without contacting the projection 9 of the container body 2 at the corner part on the hinge part 4 side of the lid body 3, the convex fitting part 22a and 22b are formed in the hinge part 4 side, and the convex fitting part is not substantially formed in the side part (side part adjacent to the hinge part 4) of the cover body 3. FIG. That is, if the convex fitting part is formed on the side part of the container at the corner part on the hinge part 4 side, a large force is required for one-touch fitting. In the example of FIG. 1, in the rounded corner portion, the fitted portion and the fitting portion on the hinge portion 4 side are centered on the intersection of the perpendiculars extending from both ends of the rounded corner portion, and the hinge portion 4 from this intersection. When the angle of the perpendicular extending to 0 is set to 0 °, convex fitting portions 22a and 22b are formed in a region having an angle of 0 to 45 °.
[0028]
In addition, in the corner portion on the side (outside) facing the hinge portion 3, the fitting portions 22c and 22d and the fitted portions 13c and 13d are curved over the entire corner portion in order to increase the fitting strength. Is formed.
[0029]
Among the lid 3, the corners 12 a, 12 b, 21 a, 21 b on the hinge part 4 side are covered with the lid through a flat part (first flat part) 23 from one end of the hinge part 4. A first extending portion 24 extending to the three fitting portions 22a and 22b is formed, and the portion to be fitted 13a of the container body 2 from the other end of the hinge portion 4 through the inclined portion 25 of the container body. , 13b and a second extending portion 26 are formed. The first extending portion 24 extends from the first flat portion 23 in a direction substantially perpendicular to the convex fitting portions 22a and 22b. The inclined portion 25 extends obliquely upward from the hinge portion 4 toward the opening of the container body in the open state, and the second extending portion 26 extends from the upper end of the inclined portion 25 to the first extending portion. It extends upward substantially parallel to the protruding portion 24 and reaches the recessed mated portions 13a and 13b.
[0030]
When the bottom surface 6b of the container body 2 and the top surface 15b of the lid body 3 are positioned in the same plane or in parallel with the lid body 3 open, in the longitudinal section of the hinge portion 4, The height of the upper end of the inclined portion 25 is higher than that of the first flat portion 23. In the example of FIGS. 1 and 2, the upper end of the inclined portion 25 is about 0.5 to 3 mm higher than the first flat portion 23 on the lid 3 side. In addition, when the bottom surface 6b of the container body 2 and the top surface 15b of the lid body 3 are positioned on the same surface or in parallel with the lid body 3 open, the bottom surface 6b or the top surface 15b is used as a reference. The angle of the inclined portion 25 is about 10 to 45 °.
[0031]
In addition, in order to improve gripability and to facilitate the fitting release operation for removing the lid 3 from the container body 2, the corner edges 27 and 28 on the outer side with respect to the hinge portion 4 are embossed. The rough surface processing such as is given.
[0032]
In such a container, in the longitudinal cross section, the height of the upper end of the inclined portion on the container body side is made higher than the height of the first flat portion, so that the hinge portion is deformed with the closing operation of the lid. However, the inclined portion and the first flat portion can be efficiently contacted, and only the fitting of the fitted portion on the outer side with respect to the hinge portion and the fitting portion corresponding to the fitted portion is possible. In addition, even the fitted portion and the fitting portion on the hinge portion side can be smoothly fitted. That is, with the closing operation of the lid 3 to the container body 2, the fitting on the hinge part side is performed prior to the fitting between the fitting parts 13c, 13d on the outer side and the fitting parts 22c, 22d. The joining portions 13a and 13b and the fitting portions 22a and 22b can be fitted respectively. Therefore, with the fitting operation of the fitting parts 22c, 22d with respect to the fitted parts 13c, 13d on the outer side, fitting parts 22a, with respect to the fitted parts 13a, 13b on the hinge part side 22b can be fitted. In addition, the first flat portion 23 and the inclined portion 25 can come into contact with the closing operation of the lid body 3 with respect to the container body 2, and the first extending portion 24 and the second extending portion 26 are also in contact with each other. Is possible.
[0033]
Further, in the longitudinal section of the hinge portion 4, the height of the inclined portion 25 is lower than the flange 11 on the container body 2 side or the second extending portion 26.
[0034]
In the present invention, the difference in height between the upper end of the inclined portion and the first flat portion is not limited to the above range. For example, the upper end of the inclined portion is 0.5 to 4 mm, preferably compared to the first flat portion. The height may be increased by about 1 to 3.5 mm, more preferably about 1.5 to 3 mm.
[0035]
The cross-sectional shape of the inclined portion is not particularly limited, and when the bottom surface of the container body and the top surface of the lid body are positioned on the same plane or in parallel with the lid body open, a straight line as shown in FIG. It may be in the shape of a curved line (such as a curved line curved upward). The inclination of the inclined portion is not limited to the above range, and when the bottom surface of the container body and the top surface of the lid body are positioned in the same plane or in parallel with the lid body open, for example, 1 to 60 °, preferably 2 to 50 ° (for example, 5 to 50 °), more preferably 2 to 48 ° (10 to 48 °), particularly about 15 to 45 °. In addition, when the cross-sectional shape of the inclined portion is a curved curve, the inclination of the inclined portion can be expressed as an inclination of a straight line connecting the lower end and the upper end of the inclined portion.
[0036]
Along with the closing operation of the lid with respect to the container body, at least a part of the inclined part on the container body side and the first flat part may be brought into contact with each other, or may be brought into contact with the entire surface.
[0037]
The inclined portion may be configured as an extension of the flange on the container body side, and the first flat portion may be configured as an extension of the flange on the lid side. Therefore, in the container body, a flange may be formed between the inclined portion and the second extending portion, or the inclined portion and the flange may be integrated. Similarly, in the lid, a flange may be formed between the flat portion and the first extension portion, or the first flat portion and the flange may be integrated.
[0038]
In such an integrated container in which the container main body and the lid are connected, the fitting on the hinge part side rather than the fitting part on the outer side and the fitted part is accompanied with the closing operation of the lid with respect to the container main body. The mating part and the fitted part need to be fitted quickly. In this fitting operation, if a convex fitting part is formed in the entire corner part on the hinge part side, resistance to fitting is likely to occur. Therefore, in the corner part, at least the fitting part on the hinge part side is formed closer to the hinge part side than the side part adjacent to the hinge part side, so that the hinge part side is prior to fitting on the outer side. The fitting at the hinge portion side can be smoothly performed only by performing the closing operation mainly using the outer side fitting.
[0039]
The fitting part on the hinge part side may be formed on the hinge part side of the corner part (such as the rounded corner part), and is not particularly limited to the above range, and is centered on the intersection of the perpendiculars extending from both ends of the corner part. When the angle of the perpendicular extending from the intersection to the hinge portion 4 is 0 °, it is 0 to 60 ° (for example, 5 to 60 °), preferably 10 to 60 °, more preferably about 10 to 50 °. It can be formed within a range, particularly 45 ° or less (about 10 to 45 °).
[0040]
The fitting part on the hinge part side and the fitting part and the fitting part on the outer side are not particularly limited, and can be formed over the entire corner part (such as the rounded corner part). When the angle of the perpendicular extending from the intersection to the hinge 4 is 0 °, for example, −20 ° to 110 °, preferably −10 ° to 100 °, more preferably It can be formed in a range of about 0 to 90 °. In addition, you may form the to-be-fitted part by the side of a hinge part in the hinge part side in the same range as the fitting part by the side of the said hinge part.
[0041]
The shapes and sizes of the outer fitting portion and the fitted portion may be either symmetric or asymmetric with an angle of 45 ° as the center. Moreover, you may form an outer side fitting part and a to-be-fitted part not only in a corner part but in the outer side part which opposes a hinge part among a container main body and a cover body. Furthermore, depending on the shape of the container, at least one fitting part and fitted part may be formed on the hinge part side and the outer side of the container main body and the lid body, respectively.
[0042]
In the packaging container of the present invention, in the longitudinal section, the height of the upper end of the inclined portion on the container body side may be higher than the height of the first flat portion on the lid body side. As long as the fitting portion of the container main body and the fitting portion of the lid can be smoothly fitted with the closing operation, the structure and shape of each part of the container main body and the lid are not particularly limited. For example, the container body and the side walls of the lid may be inclined walls. The side wall of the container body may be inclined linearly or may be curved outward of the container body. When inclined outward, the inclination angle of the inclined wall can be selected from the range of, for example, an angle of about 20 to 90 ° from the bottom wall, preferably about 30 to 85 °, and more preferably about 35 to 80 °. . Moreover, the cover body should just be provided with the cover part for covering the accommodation recessed part of the said container main body, and this cover part does not need to bulge outward like the said bulging part. It can be formed in an appropriate shape according to the type and amount of the material.
[0043]
In order to suppress the displacement of the contents such as food even when the container 1 is tilted, the accommodation recess may be provided with a partition for dividing the accommodation recess into a plurality of parts. You may form a partition according to the size or shape of things, such as foodstuffs. Moreover, you may form a ditch | groove, a rib, or a projection part in the bottom wall and side wall of a container main body for the same objective. A plurality of concave grooves, ribs, or protrusions may be formed regularly or randomly, or may be formed in combination. Further, the protrusion may have any shape that can prevent the displacement and movement of the contents, and various shapes such as a polygonal shape such as a triangular shape, a quadrangular shape (a trapezoidal shape, a rectangular shape, etc.), a semicircular shape, and a semielliptical shape It may be a protrusion having a shape of
[0044]
The flanges of the container body and the lid are not necessarily required, and may be formed only on one of the members. In order to facilitate the mating release operation, it is advantageous to form a flange. Therefore, in order to facilitate the fitting release operation, a flange is formed only on a part of the peripheral edge of the container body and / or the lid, for example, only on the outer side, or on the corner on the outer side. However, it may be used as a knob.
[0045]
Non-slip processing (rough surface processing) is not necessarily required at the edge of the outer corner of the container body. Moreover, you may carry out the anti-slip process to the edge part of the corner of the outer side of both a container main body and a cover body.
[0046]
Further, the fitting portion of the lid body may be formed at a position and size (in a planar shape) substantially corresponding to or adapted to each other with respect to the fitting portion of the container body. The shape and structure of the fitting portion are not limited to the fitting convex portion and the fitting concave portion, and various shapes and structures can be adopted.
[0047]
The planar shape of the container may be a polygonal shape such as a triangular shape or a pentagonal shape, a circular shape, an elliptical shape or the like as long as it has a hinge portion.
[0048]
In the packaging container of the present invention, the container body, the lid, and the hinge part may be transparent, translucent or opaque, respectively, but at least the plastic lid is preferably transparent, and usually all are transparent. Preferably there is.
[0049]
In the packaging container, the container main body, the lid, and the hinge portion may be formed of different materials, respectively, but can usually be formed of the same or the same material, for example, paper (laminated paper, water repellent paper, etc. Or a plastic sheet. The packaging container is usually formed of a plastic sheet in many cases, and the packaging container may be formed by a method such as injection molding. However, various plastic sheets (polyolefin resin sheet, styrene resin sheet, A thermoplastic resin sheet such as a vinyl halide resin sheet and a polyester resin sheet) can be formed by a conventional method (thermoforming methods such as vacuum forming, blow molding, pressure forming, matched mold forming). .
[0050]
The packaging container of the present invention is useful as a container for storing various items to be stored such as food (including confectionery).
[0051]
【The invention's effect】
In the present invention, in the integrated container in which the container main body and the lid are connected by the hinge portion, the height of the inclined portion on the container main body side formed through the hinge portion and the first flat portion on the lid side is In relation, since the upper end of the inclined portion and the first flat portion are made higher, the opening of the container body can be closed with the lid body by one closing operation without impairing the appearance of the container. Moreover, it can be smoothly fitted and closed by a simple operation.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a packaging container of the present invention.
FIG. 2 is a cross-sectional view of a main part of the packaging container of FIG.
FIG. 3 is a cutaway perspective view of the main part of FIG.
FIG. 4 is a partial cross-sectional view showing an example of a conventional packaging container.
FIG. 5 is a partially cutaway perspective view of the packaging container of FIG. 4;
FIG. 6 is a partial cross-sectional view showing another example of a conventional packaging container.
7 is a partially cutaway perspective view of the packaging container of FIG. 6. FIG.
[Explanation of symbols]
1 ... Packing container
2 ... Container body
3 ... Lid
4 ... Hinge
6b ... bottom of the container body
13, 13a, 13b, 13c, 13d ... mated parts
15b… The top of the lid
22, 22a, 22b, 22c, 22d ... fitting part
23 ... 1st flat part
24 ... 1st extension part
25 ... Inclined part
26 ... second extension part

Claims

A container main body having a fitting portion formed at a corner portion, and a fitting portion that can open and close the opening of the container main body and can be fitted to the fitting portion of the container main body at the corner portion. A container comprising a formed lid body and a hinge portion for connecting the container body and the lid body, wherein one end portion of the hinge portion is connected to the lid body via a first flat portion. A first extending portion extending to the fitting portion; and a second extending portion extending from the other edge portion to the fitted portion of the container body via the inclined portion, and the lid is opened When the bottom surface of the container body and the top surface of the lid body are positioned on the same plane or in parallel with each other, the upper end of the inclined portion is higher than the first flat portion in the longitudinal section of the hinge portion. the height is high rather formed of, in the container body and the lid, the engaged portion at a corner portion of the hinge side and the fitting portion A fitting portion and a fitting portion are respectively formed on a corner portion on the outer side with respect to the hinge portion or on an outer side portion facing the hinge portion, and the corner portion on the hinge portion side is rounded. When the angle of the perpendicular extending from the intersection to the hinge portion is 0 ° centering on the intersection of the perpendicular extending from both ends of the round corner portion, the fitting portion on the hinge portion side is The packaging container currently formed in the range of angle 0-60 degrees among round-shaped corner parts .

In the longitudinal section, the upper end of the inclined portion is 0.5 to 4 mm higher than the first flat portion, and the bottom surface of the container body and the top surface of the lid body are flush with the lid body in the open state. Or the packaging container of Claim 1 whose angle of an inclination part is 1-60 degrees when it is made to locate in parallel.

In a state where the lid is opened, when the top surface of the bottom and the lid of the container body was positioned coplanar or parallel, the cross-section of the inclined portion is curved curved straight or upward claim 1 or 2. The packaging container according to 2 .

The container body extends laterally from the housing recess, the upper edge of the side wall of the housing recess, and has a U-shaped cross section formed at the peripheral edge, and from the peripheral edge of the outer wall of the convex to the side. It is composed of a flange that extends, and a recessed fitting portion formed on the outer wall of the convex portion, and a lid is formed on the top surface, a side wall that extends from the peripheral portion of the top surface, and a peripheral portion of the side wall. And a bent portion having an L-shaped cross section corresponding to the convex portion of the container main body, and a flange extending laterally from the peripheral edge of the bent portion, the bent portion being the container main body. A second flat part corresponding to the top surface of the convex part and extending laterally from the side wall of the lid, and a peripheral part of the second flat part corresponding to the outer wall of the convex part of the container body A packaging container in which a convex fitting part is formed on the wall surface of the bent part, and the vertical part of the hinge part. In the cross section of the direction, the container body side of the flange or the second extending portion packaging container according to any height of the entire inclined portion of lower claims 1-3 than.

With the closing operation to fit the fitting portion with respect to the fitted portion of the outer side, with respect to the fitted portion of the hinge portion side, according to claim 1 the fitting portion can be fitted 4. A packaging container according to any one of 4 above.

With the closing operation of the lid with respect to the container main body, the first flat portion and the inclined portion can be at least partially in contact with each other, and the first extension portion and the second extension portion can be in contact with each other. The packaging container according to claim 4.

The package according to any one of claims 1 to 6, wherein a corner portion on the outer side with respect to the hinge portion is formed in a round shape, and a fitted portion and a fitting portion are formed in the rounded corner portion, respectively. container.