JP4035295B2

JP4035295B2 - Primary assembly of paper folding box

Info

Publication number: JP4035295B2
Application number: JP2001113909A
Authority: JP
Inventors: 丈八小野
Original assignee: 有限会社ジェイ・パック
Priority date: 2001-04-12
Filing date: 2001-04-12
Publication date: 2008-01-16
Anticipated expiration: 2021-04-12
Also published as: JP2002308249A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、段ボールからなって野菜や果物の梱包に用いられる紙製折込み箱の一次組立品に関する。
【０００２】
【従来の技術】
従来より、例えば、野菜や果物の梱包には、段ボールからなる紙製折込み箱が用いられていた。作物の収穫前に紙製折込み箱を組み立てた状態で保管しておくと邪魔になるが、展開状態から組み立てるのは手間がかかる。このため、紙製折込み箱を平板状に折り畳んだ一次組立品の状態で保管しておき、必要なときに必要な数だけ組立てた組立完成品を使用していた。
例えば、図８に示すように、従来例に係る紙製折込み箱１１０は、矩形の箱底部１１１と、箱底部１１１の前後及び左右に第１の折り目１１２、１１３及び第２の折り目１１４、１１５を介してそれぞれ連接し、各々対向配置された第１の外壁部１１６、１１７及び第２の外壁部１１８、１１９と、第１、第２の外壁部１１６〜１１９の外側に幅狭の第１の二重折り目１２０、１２１及び第２の二重折り目１２２、１２３を介してそれぞれ連接する第１の内壁部１２４、１２５及び第２の内壁部１２６、１２７とを有し、隣接する第１、第２の外壁部１１６〜１１９を側板連結片１３２〜１３５で接続していた。
【０００３】
側板連結片１３２〜１３５と第１の外壁部１１６、１１７の間には、第３の折り目１２８〜１３１が形成され、側板連結片１３２〜１３５と第２の外壁部１１８、１１９の間には、第４の折り目１６２〜１６５が形成されている。また、側板連結片１３２〜１３５は、箱底部１１１の角部を起点とする斜め折り目１３６〜１３９によって、斜め折り目１３６〜１３９より第１の外壁部１１６、１１７側に形成された折曲げ片１４０〜１４３と、斜め折り目１３６〜１３９より第２の外壁部１１８、１１９側に形成された接着片１４４〜１４７とをそれぞれ備えていた。また、第１の内壁部１２４の前側及び第１の内壁部１２５の後側には、矩形の接着部１５２ａ、１５３ａが設けられ、第２の内壁部１２６の左側及び第２の内壁部１２７の右側には、箱底当接部１５４ａ、１５５ａが設けられていた。さらに、第１の内壁部１２４、１２５のそれぞれ両側には、角部整形片１５０〜１５３が設けられ、さらに第１の内壁部１２４の両側端部の前側、及び第１の内壁部１２５の両側端部の後側には、切欠き１５４〜１５７がそれぞれ形成され、第２の内壁部１２６、１２７の両側には、切欠き１５４〜１５７に対応して掛合可能な掛止片１５８〜１６１がそれぞれ設けられている。
【０００４】
一次組立品を製造するときには、まず、接着部１５２ａ、１５３ａ及び接着片１４４〜１４７に接着剤を塗布する。次いで、第１の内壁部１２４、１２５を第１の二重折り目１２０、１２１で折曲げて第１の外壁部１１６、１１７に重合させ、接着部１５２ａ、１５３ａを箱底部１１１にそれぞれ接着する。次に、第１の外壁部１１６、１１７及び側板連結片１３２〜１３５を第１の折り目１１２、１１３及び第４の折り目１６２〜１６５から折り畳んで箱底部１１１に重合させ、また、接着片１４４〜１４７を第２の外壁部１１８、１１９にそれぞれ接着する。
紙製折込み箱１１０は、この状態で積層して梱包され、ユーザー宛に出荷されていた。
【０００５】
一次組立品の紙製折込み箱１１０を組立完成品にするときには、図９に示すように、第２の外壁部１１８、１１９を第２の折り目１１４、１１５から折り曲げる。このとき、第２の外壁部１１８、１１９には接着片１４４〜１４７が接着されているので、斜め折り目１３６〜１３９、第３の折り目１２８〜１３１、及び第１の折り目１１２、１１３が屈曲しながら第１の外壁部１１６、１１７及び第１の内壁部１２４、１２５が立ち上がり、接着片１４４〜１４７と折曲げ片１４０〜１４３が重合する。次に、第２の内壁部１２６、１２７を第２の二重折り目１２２、１２３から折り畳んで、接着片１４４〜１４７、折曲げ片１４０〜１４３、及び角部整形片１５０〜１５３を、第２の外壁部１１８、１１９との間に挟んで配置する。そして、各掛止片１５８〜１６１を対応する各切欠き１５４〜１５７に掛合させる。このようにして組立完成品を組立て、使用することができた。
【０００６】
【発明が解決しようとする課題】
しかしながら、前記従来の紙製折込み箱１１０には、以下のような問題があった。
図１０（Ａ）、（Ｂ）に示すように、第２の外壁部１１８、１１９と第２の内壁部１２６、１２７との間には、接着片１４４〜１４７、折曲げ片１４０〜１４３、及び角部整形片１５０〜１５３が挟まれて配置されているが、各折曲げ片１４０〜１４３は、斜め折り目１３６〜１３９で屈曲して各接着片１４４〜１４７に折り畳まれて、すなわち１８０度回動して配置されている。紙製折込み箱１１０は厚みの厚い段ボールからなっているので、各折曲げ片１４０〜１４３には反発力が加わり、回動して各接着片１４４〜１４７から離反しようとする。このため、組立完成品となった紙製折込み箱１１０は、それぞれの角部に隙間１６６が発生し、切欠き１５４〜１５７と掛止片１５８〜１６１の掛合部分が外れ易くなり、また、外観性が損なわれていた。
さらに、一次組立品から組立完成品を組み立てるときには、ユーザー側が現場で手作業によって組み立てる場合が多いが、第２の内壁部１２６、１２７を第２の二重折り目１２２、１２３で折り畳むのには大きな力が必要で、多数の紙製折込み箱１１０を短時間で組み立てることが困難であった。
また、接着片１４４〜１４７は、第４の折り目１６２〜１６５で屈曲して折り畳まれて第２の外壁部１１８、１１９に接着されているので、それぞれの接着面には、剥がれようとする方向に力が加わっており、使用する接着剤の強度を必要以上に強くしなければならなかった。
本発明はかかる事情に鑑みてなされたもので、角部を確実に接続できると共に、組立完成品を容易に組み立てることができ、接着部分に加わる力を小さくできる紙製折込み箱の一次組立品を提供することを目的とする。
【０００７】
【課題を解決するための手段】
前記目的に沿う本発明に係る紙製折込み箱の一次組立品は、矩形の箱底部１１と、箱底部１１の前後及び左右に第１の折り目１２、１３及び第２の折り目１４、１５を介してそれぞれ連接し、各々対向配置された第１の外壁部１６、１７及び第２の外壁部１８、１９と、第１、第２の外壁部１６〜１９の外側に幅狭の第１の二重折り目２０、２１及び第２の二重折り目２２、２３を介してそれぞれ連接する第１の内壁部２４、２５及び第２の内壁部２６、２７とを有する紙製折込み箱の一次組立品であって、
第１の外壁部１６、１７の両側端部には、第３の折り目２８〜３１を介して側板連結片３２〜３５がそれぞれ設けられ、
側板連結片３２〜３５は、箱底部１１の角部を起点とする斜め折り目３６〜３９によって、斜め折り目３６〜３９より基側に形成された折曲げ片４０〜４３と、斜め折り目３６〜３９より先側に形成された接着片４４〜４７とをそれぞれ備え、
第１の内壁部２４、２５は、第１の二重折り目２０、２１で折り畳まれてそれぞれ第１の外壁部１６、１７に重合し、さらに重合する第１の外壁部１６、１７及び第１の内壁部２４、２５からなる第１の側壁部４８、４９は、第１の折り目１２、１３で折り畳まれて箱底部１１に重合し、しかも接着片４４〜４７は、斜め折り目３６〜３９で折り畳まれて折曲げ片４０〜４３と重合した状態で第２の外壁部１８、１９に接着され、第２の内壁部２６、２７は、第２の二重折り目２２、２３で折り畳まれて第２の外壁部１８、１９に重合して平板状とし、組立完成時には、接着片４４〜４７と折曲げ片４０〜４３は、実質的に同一平面を形成し、
しかも、該一次組立品にあっては、第２の折り目１４、１５及び第３の折り目２８〜３１には予め折ぐせが付与され、更に平板状となっている。
【０００８】
折り畳むとは、折り目部分を中心にその両側部分を相対的に実質的に１８０度回動させることをいう。このとき、両側部分は重合する場合もあるが、少しの隙間を有して実質的に平行に配置される場合もある。二重折り目とは、少しの間隔をあけて平行に設けられた２本の折り目のことをいう。
一次組立時において、箱底部と第２の外壁部は、展開時と同じ同一平面上に配置され、第１の外壁部と折曲げ片は、折り畳まれて、すなわち展開時の裏返しの状態で配置される。接着片は、折り畳まれて、折曲げ片に重合するので、展開状態における裏側部を、第２の外壁部の表側部に接着する。
紙製折込み箱の組立完成時においては、第１、第２の外壁部を箱底部に対して立設するので、接着片と折曲げ片は、折り畳み状態から広げられて、同一平面上に配置される。従って、第１、第２の外壁部は、第１の外壁部との間が実質的に直角に折曲げられた折曲げ片、及び折曲げ片と同一面上に配置された接着片を介して接続されるので、組立完成時に第１、第２の外壁部を外側に広げようとする力が小さくなり、角部を確実に接続でき、接着部分に加わる力が小さくなり、組立が容易で、かつ使用時に変形しにくくなっている。
また、組立完成時には、４カ所の二重折り目はそれぞれ折り畳まれた状態で第１、第２の内壁部を第１、第２の外壁部に重合するが、第１、第２の内壁部を一次組立品の状態で折り畳んでいるので、組立完成時の作業を容易にして、短時間で確実に組み立てることができる。
なお、第１の内壁部と第１の外壁部は、接着して固定することが好ましい。接着は、第１の内壁部と第１の外壁部を直接接着することができ、また、第１の内壁部の外側に箱底当接片を連接しておき、該箱底当接片を箱底部に接着することも可能である。
【０００９】
ここで、第１の内壁部２４、２５の両側端部に、組立完成時において折曲げ片４０〜４３と共に第２の外壁部１８、１９及び第２の内壁部２６、２７の間に配置される角部整形片５０〜５３を設けることも可能である。
組立完成時には、第２の外壁部と第２の内壁部は、側板連結片を挟んだ位置にそれぞれ配置されるが、二重折り目の幅が広い場合には、１枚の側板連結片だけでは第２の外壁部及び第２の内壁部の位置決めを同時に行うことができない。角部整形片を設けることによって、組立時に側板連結片と角部整形片を、第２の外壁部と第２の内壁部にそれぞれ内側から当接させて支持し、位置決めを確実に行って変形を防止することができる。
【００１０】
また、第１の内壁部２４、２５の両側端部の外側に切欠き５４〜５７をそれぞれ形成し、第２の内壁部２６、２７に、組立完成時に切欠き５４〜５７に掛合する掛止片５８〜６１をそれぞれ形成することも可能である。外側とは、前側の第１の内壁部２４の前側、及び後側の第１の内壁部２５の後側をいう。かかる構成によって、組立完成時に隣接する第１、第２の内壁部を確実に固定することができ、紙製折込み箱の強度を増すと共に外観をよくすることができる。
なお、本発明に係る紙製折込み箱の一次組立品の前後及び左右の方向は逆に配置した場合にも当然適用される。
【００１１】
【発明の実施の形態】
続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態について説明し、本発明の理解に供する。
図１に示すように、本発明の一実施の形態に係る紙製折込み箱の一次組立品（以下、単に紙製折込み箱という）１０は、例えば、段ボールからなって、平板状の一次組立品の状態で出荷され、ユーザーが使用時に組み立てて野菜や果物を収納し、出荷するときに用いることができる。
紙製折込み箱１０は、横長矩形の箱底部１１と、箱底部１１の前後及び左右に第１の折り目１２、１３及び第２の折り目１４、１５を介してそれぞれ連接し、各々対向配置された第１の外壁部１６、１７及び第２の外壁部１８、１９と、第１、第２の外壁部１６〜１９の外側に幅狭の第１の二重折り目２０、２１及び第２の二重折り目２２、２３を介してそれぞれ連接する第１の内壁部２４、２５及び第２の内壁部２６、２７とを有している。以下、詳しく説明する。
【００１２】
第１、第２の折り目１２〜１５は、通常１本に形成されるが、二重折り目にして折曲げ時の抵抗を小さくすることも可能である。
第１、第２の外壁部１６〜１９は矩形に形成され、第１の外壁部１６、１７の長手方向長さは箱底部１１の左右長さと、第２の外壁部１８、１９の長手方向長さは箱底部１１の前後長さと実質的に同じ長さに形成されている。
第１の外壁部１６、１７の両側端部には、第３の折り目２８〜３１を介して側板連結片３２〜３５がそれぞれ設けられている。側板連結片３２〜３５には、箱底部１１の角部を起点として、第３の折り目２８〜３１に対して例えば、４５度の方向に形成された斜め折り目３６〜３９が形成されている。そして、斜め折り目３６〜３９より基側に折曲げ片４０〜４３を形成し、斜め折り目３６〜３９より先側に接着片４４〜４７を形成している。
【００１３】
次に、側板連結片３２〜３５の形状について説明するが、側板連結片３２〜３５は実質的に同一形状に形成されているため、ここでは、側板連結片３２についてのみ説明する。側板連結片３２に形成された斜め折り目３６の長さは、第１の外壁部１６及び第２の外壁部１８に接続する仮想矩形６６の対角線より短く形成され、側板連結片３２の折曲げ片４０は、斜め折り目３６と、第３の折り目２８と、斜め折り目３６の外側端及び第３の折り目２８の外側端を結ぶ直線とによって囲まれる三角形状に形成されている。また、接着片４４は、仮想矩形６６の左辺と、仮想矩形６６の底辺（後側辺）と、斜め折り目３６と、斜め折り目３６の外側端から底辺に平行に左側に引いた直線で囲まれた台形状に形成されている。第２の外壁部１８と接着片４４は、カッターによる切れ目６７によって分離されている。なお、他の接着片４５〜４７と第２の外壁部１８、１９との間も切れ目６８〜７０によって分離されている。
【００１４】
次に、第１、第２の二重折り目２０〜２３を介して第１、第２の外壁部１６〜１９の外側に連接された第１、第２の内壁部２４〜２７について説明する。
第１、第２の二重折り目２０〜２３のそれぞれ平行な２本の折り目の間には、壁部天板６２〜６５がそれぞれ形成され、各壁部天板６２〜６５の外側の両角部は丸く形成されている。各壁部天板６２〜６５の両端部は、組立完成時に重合する。
第１の内壁部２４、２５は、矩形に形成され、その長手方向長さは、第１の外壁部１６、１７の長手方向長さより短く形成されている。また、第１の内壁部２４の両側端部の後側、及び第１の内壁部２５の両側端部の前側には、先部を丸く形成した角部整形片５０〜５３が設けられている。角部整形片５０〜５３は、第１の内壁部２４、２５を第１の二重折り目２０、２１から折り畳んだときに折曲げ片４０〜４３にそれぞれ重合し、その先部は、折曲げ片４０〜４３の外側に突出しない大きさに形成されている。角部整形片５０〜５３は、組立完成時において折曲げ片４０〜４３と共に第２の外壁部１８、１９及び第２の内壁部２６、２７の間に配置される。また、第１の内壁部２４の両側端部の前側及び第１の内壁部２５の両側端部の後側、すなわちそれぞれ外側には、切欠き５４〜５７がそれぞれ形成されている。
【００１５】
第２の内壁部２６、２７は、第２の二重折り目２２、２３に接続する部分を第２の外壁部１８、１９の長手方向長さよりそれぞれ短く形成し、その長手方向長さを外側端に向かってそれぞれ徐々に拡幅させて形成している。また、第２の内壁部２６の両側端部の左側（外側）及び第２の内壁部２７の両側端部の右側（外側）には、組立完成時に切欠き５４〜５７に掛合する掛止片５８〜６１がそれぞれ形成されている。掛止片５８〜６１を含めた第２の内壁部２６、２７の長手方向長さは、第２の外壁部１８、１９の長手方向長さと実質的に同じにしている。また、第２の内壁部２６、２７の外側には、それぞれ矩形の箱底当接板７１、７２が設けられている。
図２に示すように、第１の内壁部２４、２５は、第１の二重折り目２０、２１で折り畳まれてそれぞれ第１の外壁部１６、１７に重合して接着され、第１の側壁部４８、４９を構成する。
【００１６】
図３に示すように、第１の側壁部４８、４９は、第１の折り目１２、１３で折り畳まれて箱底部１１に重合する。また、接着片４４〜４７は、斜め折り目３６〜３９で折り畳まれて折曲げ片４０〜４３と重合した状態で第２の外壁部１８、１９に接着される。
また、図４に示すように、第２の内壁部２６、２７は、第２の二重折り目２２、２３で折り畳まれて第２の外壁部１８、１９に重合して第２の側壁部７３、７４を形成し、平板状の一次組立品が構成される。
図５、図７に示すように、第２の外壁部１８、１９と第１の側壁部４８、４９を立設させ、第２の内壁部２６、２７の各掛止片５８〜６１を対応する切欠き５４〜５７に掛合させ、組立完成品にする。
図６に示すように、紙製折込み箱１０の組立完成時には、接着片４４〜４７と折曲げ片４０〜４３は、実質的に同一平面を形成する。折曲げ片４０〜４３は、第３の折り目２８〜３１を実質的に直角に曲げているが、斜め折り目３６〜３９を折曲げていないので、第２の外壁部１８、１９を外側に広げる方向に押す力は弱い。従って、組立完成後の紙製折込み箱１０の角部に隙間が生じにくく、掛止片５８〜６１が切欠き５４〜５７から外れることを防止して強度を保持でき、また、紙製折込み箱１０が壊れにくくなると共に、外観を向上させることができる。
【００１７】
次いで、紙製折込み箱１０の製造手順について説明する。
（外形形成工程）
紙製折込み箱１０は、まず、所定の抜き型によって切断され、図１に示す展開状態に形成される。
（折ぐせ付与工程）
第２の折り目１４、１５及び第３の折り目２８〜３１は、一次組立品を製造するときには折曲げられず、ユーザーに出荷されて組立完成品が製作されるときにはじめて折曲げられる。従って、一次組立品を製造するときに予め折ぐせを付与しておくことにより、ユーザーの負担を減らし、組立作業を迅速かつ簡単に行うことができる。
【００１８】
（接着剤塗布工程）
接着剤は、例えば、感圧式のものを展開状態の紙製折込み箱１０を送るローラに転写して塗布することができる。接着剤は、第１の内壁部２４、２５のそれぞれ外側に近い部分の表側の左右に長い矩形範囲と、第１の外壁部１６、１７のそれぞれ内側に近い部分の前記矩形範囲に対応する矩形範囲にそれぞれ塗布する。また、接着片４４〜４７の裏側の略全面の台形範囲と、該台形範囲を、箱底部１１の近接する角部の頂点を中心にそれぞれ隣接する第２の外壁部１８、１９側にそれぞれ９０度回動させたとき、該台形範囲に重合する第２の外壁部１８、１９の表側部分にも接着剤をそれぞれ塗布する。接着剤を展開状態の紙製折込み箱１０の表裏の両面に塗布するので、使用する接着剤は、流れにくい合成糊を使用している。
【００１９】
（第１の側壁部形成工程）
図２に示すように、第１の二重折り目２０、２１を折曲げて、第１の内壁部２４、２５を第１の外壁部１６、１７に重合させ、接着剤を塗布した矩形範囲を当接させ、押圧して接着させる。
（接着片接続工程）
図３に示すように、第１の折り目１２、１３を折曲げて第１の側壁部４８、４９を箱底部１１に当接させる。また、側板連結片３２〜３５を斜め折り目３６〜３９で折り畳み、接着片４４〜４７を折曲げ片４０〜４３に重合させると共に、接着片４４〜４７を第２の外壁部１８、１９の接着剤を塗布した台形範囲に重合させ、接着片４４〜４７を第２の外壁部１８、１９に押圧して接着する。
【００２０】
（第２の側壁部形成工程）
図４に示すように、第２の内壁部２６、２７を第２の二重折り目２２、２３から折曲げて、第２の外壁部１８、１９に隙間をあけた状態で重合させる。このようにして一次組立品を製造することができる。一次組立品は平板状に形成されるので、輸送時に嵩張らず、また、第２の内壁部２６、２７を折曲げているので、コンパクトに形成することができる。
【００２１】
次いで、一次組立品を完成組立品を作製する手順について説明する。
（側壁立設工程）
図５、図７に示すように、第２の内壁部２６、２７を両側の壁部天板６２、６３に載せた状態で、第２の外壁部１８、１９を第２の折り目１４、１５から折曲げると、折曲げ片４０〜４３が斜め折り目３６〜３９を中心に回動して折り畳み状態から広がり、また、第１の側壁部４８、４９が、第３の折り目２８〜３１及び第１の折り目１２、１３を中心に回動して立設する。そして、壁部天板６２、６３に載った状態の第２の内壁部２６、２７を第２の二重折り目２２、２３から再度折り畳んで、各掛止片５８〜６１を対応する切欠き５４〜５７に掛合させ、組立完成品にする。第２の内壁部２６、２７は、外側に向かって徐々に拡幅しているので、組立完成時には、切欠き５４〜５７に確実に掛合してはずれにくくなっている。
以上、本発明に係る実施の形態について説明してきたが、本発明は、前記実施の形態に限定されるものではなく、例えば、前記実施の形態においては、接着剤の塗布を両方の接着面に対して行っているが、片面でもよい。また、糊以外に両面テープ等の他の接着手段を用いることも可能である。
さらに、本実施の形態においては、厚みの厚い段ボールを用いた場合について説明したが、コートボール紙や厚みの薄いＥフルート等の段ボールを用いた場合には、紙製折込み箱１０を、以下のように変形して用いることもできる。
すなわち、前記実施の形態では、第１の内壁部２４、２５を第１の外壁部１６、１７にそれぞれ直接接着していたが、第１の内壁部のそれぞれ外側端に図示しない接着片を連接して形成し、この部分を箱底部に接着することも可能である。かかる構成によって、第１の外壁部及び第１の内壁部を平行に配置して形成することも可能になり、外観を向上させることができる。
【００２２】
【発明の効果】
請求項１〜３記載の紙製折込み箱の一次組立品においては、接着片を、斜め折り目で折り畳んで折曲げ片と重合した状態で、第２の外壁部に接着し、組立完成時に接着片と折曲げ片が同一平面を形成するので、第１、第２の外壁部を外側に広げようとする力を小さくでき、組立を容易にして使用時に変形しにくくすることが可能である。
また、第１、第２の内壁部を一次組立品の状態で折り畳んでいるので、組立完成時の作業を容易にして、短時間で確実に組み立てることができる。
特に、請求項２記載の紙製折込み箱の一次組立品においては、角部整形片を設けるので、組立時に側板連結片と角部整形片を第２の外壁部と第２の内壁部に内側からそれぞれ当接させて支持し、位置決めを確実に行って変形を防止することができる。
そして、請求項３記載の紙製折込み箱の一次組立品においては、第１、第２の内壁部の両側端部に互いに掛合する切欠き及び掛止片をそれぞれ形成するので、組立完成時に隣接する第１、第２の内壁部を確実に固定することができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係る紙製折込み箱の一次組立品の展開図である。
【図２】同紙製折込み箱の一次組立品の組立状態を示す平面図である。
【図３】同紙製折込み箱の一次組立品の組立状態を示す平面図である。
【図４】同紙製折込み箱の一次組立品の平面図である。
【図５】同紙製折込み箱の一次組立品からの組立状態を示す斜視図である。
【図６】同紙製折込み箱の組立完成品の部分平断面図である。
【図７】同紙製折込み箱の組立完成品の斜視図である。
【図８】従来例に係る紙製折込み箱の展開図である。
【図９】同紙製折込み箱の組立状態を示す斜視図である。
【図１０】（Ａ）、（Ｂ）は、それぞれ同紙製折込み箱の組立完成品の部分平断面図である。
【符号の説明】
１０：紙製折込み箱の一次組立品、１１：箱底部、１２、１３：第１の折り目、１４、１５：第２の折り目、１６、１７：第１の外壁部、１８、１９：第２の外壁部、２０、２１：第１の二重折り目、２２、２３：第２の二重折り目、２４、２５：第１の内壁部、２６、２７：第２の内壁部、２８〜３１：第３の折り目、３２〜３５：側板連結片、３６〜３９：斜め折り目、４０〜４３：折曲げ片、４４〜４７：接着片、４８、４９：第１の側壁部、５０〜５３：角部整形片、５４〜５７：切欠き、５８〜６１：掛止片、６２〜６５：壁部天板、６６：仮想矩形、６７〜７０：切れ目、７１、７２：箱底当接板、７３、７４：第２の側壁部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a primary assembly of a paper folding box made of cardboard and used for packaging vegetables and fruits.
[0002]
[Prior art]
Conventionally, for example, a paper folding box made of cardboard has been used for packing vegetables and fruits. Although storing paper folded boxes in an assembled state before harvesting crops is an obstacle, it takes time to assemble them from the unfolded state. For this reason, a paper folded box is stored in a state of a primary assembly folded in a flat plate shape, and an assembled product obtained by assembling as many as necessary is used.
For example, as shown in FIG. 8, a paper folding box 110 according to a conventional example includes a rectangular box bottom 111, first folds 112, 113 and second folds 114, 115 on the front, back, left and right of the box bottom 111. The first outer wall portions 116 and 117 and the second outer wall portions 118 and 119 that are connected to each other through the first and second outer wall portions 116 and 119, respectively, and the first outer wall portions 116 to 119 having a narrow width outside the first outer wall portions 116 to 119. The first inner wall portions 124 and 125 and the second inner wall portions 126 and 127 connected through the double fold lines 120 and 121 and the second double fold lines 122 and 123, respectively. The second outer wall portions 116 to 119 are connected by the side plate connecting pieces 132 to 135.
[0003]
Third folds 128 to 131 are formed between the side plate connecting pieces 132 to 135 and the first outer wall portions 116 and 117, and between the side plate connecting pieces 132 to 135 and the second outer wall portions 118 and 119. The fourth fold lines 162 to 165 are formed. Further, the side plate connecting pieces 132 to 135 are bent pieces 140 formed on the first outer wall portions 116 and 117 side of the oblique folds 136 to 139 by oblique folds 136 to 139 starting from the corners of the box bottom 111. And 143 and adhesive pieces 144 to 147 formed on the second outer wall portions 118 and 119 side from the oblique folds 136 to 139, respectively. In addition, rectangular adhesive portions 152 a and 153 a are provided on the front side of the first inner wall portion 124 and the rear side of the first inner wall portion 125, and the left side of the second inner wall portion 126 and the second inner wall portion 127. On the right side, box bottom contact portions 154a and 155a were provided. Further, corner shaping pieces 150 to 153 are provided on both sides of the first inner wall portions 124 and 125, respectively, and further on the front side of the both end portions of the first inner wall portion 124 and on both sides of the first inner wall portion 125. Notches 154 to 157 are formed on the rear side of the end portions, and latching pieces 158 to 161 that can be engaged with the notches 154 to 157 on both sides of the second inner wall portions 126 and 127, respectively. Each is provided.
[0004]
When manufacturing the primary assembly, first, an adhesive is applied to the bonding portions 152a and 153a and the bonding pieces 144 to 147. Next, the first inner wall portions 124 and 125 are bent at the first double folds 120 and 121 to be superposed on the first outer wall portions 116 and 117, and the bonding portions 152a and 153a are bonded to the box bottom portion 111, respectively. Next, the first outer wall portions 116 and 117 and the side plate connecting pieces 132 to 135 are folded from the first folds 112 and 113 and the fourth folds 162 to 165 to be superposed on the box bottom 111, and the adhesive pieces 144 to 147 is bonded to the second outer wall portions 118 and 119, respectively.
The paper folding box 110 is stacked and packed in this state, and shipped to the user.
[0005]
When the paper folding box 110 of the primary assembly is made into an assembled product, the second outer wall portions 118 and 119 are folded from the second fold lines 114 and 115 as shown in FIG. At this time, since the adhesive pieces 144 to 147 are bonded to the second outer wall portions 118 and 119, the oblique folds 136 to 139, the third folds 128 to 131, and the first folds 112 and 113 are bent. However, the first outer wall portions 116 and 117 and the first inner wall portions 124 and 125 rise, and the adhesive pieces 144 to 147 and the bent pieces 140 to 143 are superposed. Next, the second inner wall portions 126 and 127 are folded from the second double fold lines 122 and 123, and the adhesive pieces 144 to 147, the bent pieces 140 to 143, and the corner shaping pieces 150 to 153 are secondly connected. Between the outer wall portions 118 and 119. And each latching piece 158-161 is engaged with each notch 154-157 corresponding. In this way, the assembled finished product could be assembled and used.
[0006]
[Problems to be solved by the invention]
However, the conventional paper folding box 110 has the following problems.
As shown in FIGS. 10A and 10B, between the second outer wall portions 118 and 119 and the second inner wall portions 126 and 127, adhesive pieces 144 to 147, bent pieces 140 to 143, The corner shaping pieces 150 to 153 are sandwiched and arranged, but the bent pieces 140 to 143 are bent at oblique folds 136 to 139 and folded into adhesive pieces 144 to 147, that is, 180 degrees. It is arranged to rotate. Since the paper folding box 110 is made of thick corrugated cardboard, a repulsive force is applied to each of the folded pieces 140 to 143, and the paper folded box 110 is rotated to separate from the adhesive pieces 144 to 147. For this reason, the paper folding box 110 that is an assembled product has gaps 166 at the respective corners, and the engaging portions of the notches 154 to 157 and the engaging pieces 158 to 161 are easily detached, and the appearance is also improved. Sex was impaired.
Furthermore, when assembling a finished assembly from the primary assembly, the user often assembles it manually on site, but it is too large to fold the second inner wall portions 126, 127 with the second double folds 122, 123. It was difficult to assemble a large number of paper folding boxes 110 in a short time.
In addition, since the adhesive pieces 144 to 147 are bent and folded at the fourth fold lines 162 to 165 and bonded to the second outer wall portions 118 and 119, the adhesive surfaces 144 and 147 are peeled off from the respective adhesive surfaces. Therefore, the strength of the adhesive used had to be increased more than necessary.
The present invention has been made in view of such circumstances, and is a primary assembly of a paper folding box that can reliably connect corners, easily assemble an assembled product, and reduce the force applied to the bonded portion. The purpose is to provide.
[0007]
[Means for Solving the Problems]
The primary assembly of the paper folding box according to the present invention that meets the above-mentioned object is a rectangular box bottom 11, and the first folds 12, 13 and the second folds 14, 15 on the front, back, left and right of the box bottom 11. The first outer wall portions 16, 17 and the second outer wall portions 18, 19 that are connected to each other and are opposed to each other, and the first two second narrow wall portions outside the first and second outer wall portions 16-19. A primary assembly of a paper folding box having a first inner wall part 24, 25 and a second inner wall part 26, 27 connected to each other via a double fold line 20, 21 and a second double fold line 22, 23, respectively. There,
Side plate connecting pieces 32 to 35 are provided on both side end portions of the first outer wall portions 16 and 17 via third fold lines 28 to 31, respectively.
The side plate connecting pieces 32 to 35 are bent pieces 40 to 43 formed on the base side from the diagonal folds 36 to 39 by the diagonal folds 36 to 39 starting from the corners of the box bottom 11, and the diagonal folds 36 to 39. Each having adhesive pieces 44 to 47 formed on the further front side,
The first inner wall portions 24 and 25 are folded at the first double fold lines 20 and 21 to overlap the first outer wall portions 16 and 17, respectively, and further overlap the first outer wall portions 16 and 17 and first The first side wall portions 48 and 49 formed of the inner wall portions 24 and 25 are folded at the first folds 12 and 13 and overlapped with the box bottom portion 11, and the adhesive pieces 44 to 47 are oblique folds 36 to 39. The second inner wall portions 26 and 27 are folded by the second double fold lines 22 and 23 and are bonded to the second outer wall portions 18 and 19 in a state of being folded and overlapped with the bent pieces 40 to 43. 2 are superposed on the outer wall portions 18 and 19 to form a flat plate, and when the assembly is completed, the adhesive pieces 44 to 47 and the bent pieces 40 to 43 form substantially the same plane ,
In addition, in the primary assembly, the second fold lines 14 and 15 and the third fold lines 28 to 31 are preliminarily provided with a fold, and further have a flat plate shape.
[0008]
Folding refers to relatively rotating the both side portions substantially 180 degrees around the fold portion. At this time, both side portions may be superposed, but may be arranged substantially in parallel with a small gap. The double fold refers to two folds provided in parallel with a slight gap.
At the time of primary assembly, the box bottom and the second outer wall are arranged on the same plane as when deployed, and the first outer wall and the folded piece are folded, that is, placed in an inverted state when deployed. Is done. Since the adhesive piece is folded and superposed on the bent piece, the back side part in the unfolded state is adhered to the front side part of the second outer wall part.
When the assembly of the paper folding box is completed, the first and second outer wall portions are erected with respect to the bottom of the box, so that the adhesive piece and the folding piece are expanded from the folded state and arranged on the same plane. Is done. Therefore, the first and second outer wall portions are connected via a bent piece that is bent substantially perpendicularly to the first outer wall portion, and an adhesive piece that is disposed on the same plane as the bent piece. Therefore, when the assembly is completed, the force to expand the first and second outer wall portions is reduced, the corner portions can be connected securely, the force applied to the bonded portion is reduced, and the assembly is easy. And it becomes difficult to be deformed during use.
In addition, when the assembly is completed, the four double folds are respectively folded, and the first and second inner wall portions are superposed on the first and second outer wall portions, but the first and second inner wall portions are overlapped. Since it is folded in the state of the primary assembly, it is possible to easily assemble the assembly in a short time by facilitating the work when the assembly is completed.
Note that the first inner wall portion and the first outer wall portion are preferably bonded and fixed. The first inner wall portion and the first outer wall portion can be directly bonded to each other, and a box bottom abutting piece is connected to the outside of the first inner wall portion, and the box bottom abutting piece is connected to the box bottom portion. It is also possible to adhere to.
[0009]
Here, it is arranged between the second outer wall portions 18 and 19 and the second inner wall portions 26 and 27 together with the bent pieces 40 to 43 at the end of both sides of the first inner wall portions 24 and 25 when the assembly is completed. It is also possible to provide corner shaping pieces 50-53.
When the assembly is completed, the second outer wall portion and the second inner wall portion are respectively arranged at positions sandwiching the side plate connecting pieces. However, when the double fold is wide, only one side plate connecting piece is used. The positioning of the second outer wall portion and the second inner wall portion cannot be performed simultaneously. By providing the corner shaping piece, the side plate connecting piece and the corner shaping piece are supported by being brought into contact with the second outer wall portion and the second inner wall portion from the inside during assembly, and the positioning is reliably performed for deformation. Can be prevented.
[0010]
Further, notches 54 to 57 are respectively formed on the outer sides of both side end portions of the first inner wall portions 24 and 25, and the second inner wall portions 26 and 27 are latched to be engaged with the notches 54 to 57 when the assembly is completed. It is also possible to form the pieces 58 to 61, respectively. The outside refers to the front side of the first inner wall portion 24 on the front side and the rear side of the first inner wall portion 25 on the rear side. With such a configuration, the first and second inner walls adjacent to each other can be securely fixed when the assembly is completed, and the strength of the paper folding box can be increased and the appearance can be improved.
Of course, the present invention can also be applied to the case where the front and rear and left and right directions of the primary assembly of the paper folding box according to the present invention are arranged in reverse.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
As shown in FIG. 1, a paper folding box primary assembly (hereinafter simply referred to as a paper folding box) 10 according to an embodiment of the present invention is composed of, for example, corrugated cardboard and is a flat primary assembly. It can be used when the user assembles at the time of use, stores vegetables and fruits, and ships.
The paper folding box 10 is connected to the horizontally long rectangular box bottom 11 via the first fold lines 12 and 13 and the second fold lines 14 and 15 on the front and rear and the left and right sides of the box bottom section 11, respectively. The first outer wall portions 16 and 17 and the second outer wall portions 18 and 19, and the first double folds 20 and 21 and the second two which are narrow outside the first and second outer wall portions 16 to 19. It has the 1st inner wall parts 24 and 25 and the 2nd inner wall parts 26 and 27 which are connected via the heavy fold lines 22 and 23, respectively. This will be described in detail below.
[0012]
The first and second folds 12 to 15 are usually formed as one, but it is also possible to reduce the resistance at the time of folding by making double folds.
The first and second outer wall portions 16 to 19 are formed in a rectangular shape, and the longitudinal lengths of the first outer wall portions 16 and 17 are the left and right lengths of the box bottom portion 11 and the longitudinal direction of the second outer wall portions 18 and 19. The length is formed to be substantially the same as the front-rear length of the box bottom 11.
Side plate connecting pieces 32 to 35 are provided on both side end portions of the first outer wall portions 16 and 17 via third fold lines 28 to 31, respectively. The side plate connecting pieces 32 to 35 are formed with diagonal folds 36 to 39 formed in the direction of 45 degrees, for example, with respect to the third folds 28 to 31 starting from the corners of the box bottom 11. And the bending pieces 40-43 are formed in the base side from the diagonal folds 36-39, and the adhesive pieces 44-47 are formed in the front side from the diagonal folds 36-39.
[0013]
Next, the shape of the side plate connecting pieces 32 to 35 will be described. Since the side plate connecting pieces 32 to 35 are formed in substantially the same shape, only the side plate connecting piece 32 will be described here. The length of the diagonal fold 36 formed on the side plate connecting piece 32 is shorter than the diagonal line of the virtual rectangle 66 connected to the first outer wall portion 16 and the second outer wall portion 18, and the bent piece of the side plate connecting piece 32 is formed. Reference numeral 40 denotes a triangular shape surrounded by the oblique crease 36, the third crease 28, and a straight line connecting the outer end of the oblique crease 36 and the outer end of the third crease 28. The adhesive piece 44 is surrounded by the left side of the virtual rectangle 66, the bottom side (rear side) of the virtual rectangle 66, the diagonal fold 36, and a straight line drawn to the left from the outer end of the diagonal fold 36 in parallel to the bottom side. It is formed in a trapezoidal shape. The second outer wall portion 18 and the adhesive piece 44 are separated by a cut 67 formed by a cutter. The other adhesive pieces 45 to 47 and the second outer wall portions 18 and 19 are also separated by the cuts 68 to 70.
[0014]
Next, the first and second inner wall portions 24 to 27 connected to the outside of the first and second outer wall portions 16 to 19 through the first and second double fold lines 20 to 23 will be described.
Wall top plates 62 to 65 are formed between two parallel folds of the first and second double folds 20 to 23, respectively, and both outer corners of the wall top plates 62 to 65 are formed. Is formed round. Both end portions of each of the wall top plates 62 to 65 are overlapped when the assembly is completed.
The first inner wall portions 24 and 25 are formed in a rectangular shape, and the length in the longitudinal direction thereof is shorter than the length in the longitudinal direction of the first outer wall portions 16 and 17. Further, corner shaping pieces 50 to 53 each having a rounded tip are provided on the rear side of both end portions of the first inner wall portion 24 and on the front side of both end portions of the first inner wall portion 25. . The corner shaping pieces 50 to 53 are superposed on the folding pieces 40 to 43 when the first inner wall portions 24 and 25 are folded from the first double folds 20 and 21, respectively, and the tip portions thereof are bent. It is formed in the size which does not protrude outside the pieces 40-43. The corner shaping pieces 50 to 53 are arranged between the second outer wall portions 18 and 19 and the second inner wall portions 26 and 27 together with the bent pieces 40 to 43 when the assembly is completed. Further, notches 54 to 57 are respectively formed on the front side of both side end portions of the first inner wall portion 24 and the rear side of both side end portions of the first inner wall portion 25, that is, on the outer sides.
[0015]
The second inner wall portions 26 and 27 are formed so that the portions connected to the second double folds 22 and 23 are shorter than the longitudinal lengths of the second outer wall portions 18 and 19, respectively. It is formed by gradually widening each. Further, on the left side (outside) of the both side end portions of the second inner wall portion 26 and the right side (outside) of the both side end portions of the second inner wall portion 27, latching pieces that engage with the notches 54 to 57 when the assembly is completed. 58 to 61 are formed. The longitudinal lengths of the second inner wall portions 26 and 27 including the latching pieces 58 to 61 are substantially the same as the longitudinal lengths of the second outer wall portions 18 and 19. In addition, rectangular box bottom contact plates 71 and 72 are provided outside the second inner wall portions 26 and 27, respectively.
As shown in FIG. 2, the first inner wall portions 24 and 25 are folded at the first double folds 20 and 21 and overlapped and bonded to the first outer wall portions 16 and 17, respectively. Parts 48 and 49 are configured.
[0016]
As shown in FIG. 3, the first side walls 48 and 49 are folded at the first folds 12 and 13 and overlapped with the box bottom 11. The adhesive pieces 44 to 47 are bonded to the second outer wall portions 18 and 19 in a state where the adhesive pieces 44 to 47 are folded at the oblique folds 36 to 39 and overlapped with the bent pieces 40 to 43.
Further, as shown in FIG. 4, the second inner wall portions 26, 27 are folded at the second double fold lines 22, 23 and overlapped with the second outer wall portions 18, 19 to be second sidewall portions 73. , 74 to form a flat primary assembly.
As shown in FIGS. 5 and 7, the second outer wall portions 18 and 19 and the first side wall portions 48 and 49 are erected, and the respective latching pieces 58 to 61 of the second inner wall portions 26 and 27 correspond to each other. Engage with the cutouts 54 to 57 to make an assembled product.
As shown in FIG. 6, when the assembly of the paper folding box 10 is completed, the adhesive pieces 44 to 47 and the bent pieces 40 to 43 form substantially the same plane. The bent pieces 40 to 43 bend the third folds 28 to 31 substantially at right angles, but do not fold the oblique folds 36 to 39, so that the second outer wall portions 18 and 19 are spread outward. The force pushing in the direction is weak. Accordingly, it is difficult for gaps to be formed at the corners of the paper folding box 10 after completion of assembly, the retaining pieces 58 to 61 can be prevented from coming off from the notches 54 to 57, and the strength can be maintained. Also, the paper folding box 10 becomes difficult to break and the appearance can be improved.
[0017]
Next, the manufacturing procedure of the paper folding box 10 will be described.
(Outline forming process)
The paper folding box 10 is first cut by a predetermined punching die and formed in the unfolded state shown in FIG.
(Folding grant process)
The second fold lines 14 and 15 and the third fold lines 28 to 31 are not folded when the primary assembly is manufactured, but are folded only when the assembled product is manufactured after being shipped to the user. Therefore, by providing a fold in advance when manufacturing the primary assembly, it is possible to reduce the burden on the user and perform the assembly work quickly and easily.
[0018]
(Adhesive application process)
For example, a pressure-sensitive adhesive can be transferred and applied to a roller that feeds the folded paper folding box 10. The adhesive has a rectangular range that is long on the left and right sides of the front side of the first inner wall portions 24 and 25, and a rectangular shape corresponding to the rectangular range of the first outer wall portions 16 and 17 near the inside. Apply to each area. Further, the trapezoidal range of the substantially entire surface on the back side of the adhesive pieces 44 to 47 and the trapezoidal range are respectively set on the side of the second outer wall portions 18 and 19 adjacent to each other around the apex of the adjacent corners of the box bottom 11. When rotated, the adhesive is also applied to the front side portions of the second outer wall portions 18 and 19 that overlap in the trapezoidal range. Since the adhesive is applied to both the front and back surfaces of the paper folding box 10 in the unfolded state, the adhesive used is made of a synthetic glue that is difficult to flow.
[0019]
(First side wall forming step)
As shown in FIG. 2, the first double folds 20 and 21 are bent, the first inner wall portions 24 and 25 are polymerized on the first outer wall portions 16 and 17, and a rectangular area where an adhesive is applied is formed. Abut and press to bond.
(Adhesive piece connection process)
As shown in FIG. 3, the first fold lines 12 and 13 are bent so that the first side wall portions 48 and 49 are brought into contact with the box bottom portion 11. Further, the side plate connecting pieces 32 to 35 are folded at the oblique folds 36 to 39, the adhesive pieces 44 to 47 are superposed on the bent pieces 40 to 43, and the adhesive pieces 44 to 47 are bonded to the second outer wall portions 18 and 19. It superposes | polymerizes to the trapezoid range which apply | coated the agent, and the adhesive pieces 44-47 are pressed and bonded to the 2nd outer wall parts 18 and 19. FIG.
[0020]
(Second side wall forming step)
As shown in FIG. 4, the second inner wall portions 26, 27 are folded from the second double fold lines 22, 23, and the second outer wall portions 18, 19 are polymerized with a gap. In this way, a primary assembly can be manufactured. Since the primary assembly is formed in a flat plate shape, it is not bulky during transportation, and the second inner wall portions 26 and 27 are bent, so that the primary assembly can be formed compactly.
[0021]
Next, a procedure for producing a primary assembly and a completed assembly will be described.
(Side wall standing process)
As shown in FIGS. 5 and 7, the second outer wall portions 18 and 19 are placed on the second fold lines 14 and 15 while the second inner wall portions 26 and 27 are placed on the wall top plates 62 and 63 on both sides. When folded from above, the folded pieces 40 to 43 rotate around the oblique folds 36 to 39 to expand from the folded state, and the first side wall portions 48 and 49 have the third folds 28 to 31 and the first folds. The first folds 12 and 13 are rotated around the folds 12 and 13 and are erected. Then, the second inner wall portions 26 and 27 mounted on the wall top plates 62 and 63 are folded again from the second double fold lines 22 and 23, and the respective latching pieces 58 to 61 are correspondingly cut out 54. -57 to make an assembled product. Since the second inner wall portions 26 and 27 are gradually widened toward the outside, the second inner wall portions 26 and 27 are not easily engaged with the notches 54 to 57 when assembled.
As mentioned above, although embodiment which concerns on this invention has been described, this invention is not limited to the said embodiment, For example, in the said embodiment, application | coating of an adhesive agent is applied to both adhesive surfaces. However, it may be single-sided. In addition to the glue, other adhesive means such as a double-sided tape can be used.
Furthermore, in this embodiment, the case where a thick cardboard is used has been described. However, when a cardboard such as a coated cardboard or a thin E flute is used, the paper folding box 10 is It can also be used as modified.
That is, in the above-described embodiment, the first inner wall portions 24 and 25 are directly bonded to the first outer wall portions 16 and 17, respectively, but adhesive pieces (not shown) are connected to the outer ends of the first inner wall portions. It is also possible to form and bond this part to the bottom of the box. With this configuration, it is possible to form the first outer wall portion and the first inner wall portion in parallel with each other, and the appearance can be improved.
[0022]
【The invention's effect】
4. The primary assembly of the paper folding box according to claim 1, wherein the adhesive piece is folded at an oblique crease and bonded to the second outer wall portion in a state of being overlapped with the folded piece, and the adhesive piece is obtained when the assembly is completed. Since the bent pieces form the same plane, it is possible to reduce the force for spreading the first and second outer wall portions outward, to facilitate assembly and to prevent deformation during use.
Further, since the first and second inner wall portions are folded in the state of the primary assembly, it is possible to easily assemble the assembly in a short time by facilitating the work when the assembly is completed.
In particular, in the primary assembly of the paper folding box according to claim 2, since the corner shaping piece is provided, the side plate connecting piece and the corner shaping piece are placed inside the second outer wall portion and the second inner wall portion at the time of assembly. Each can be abutted and supported, and positioning can be reliably performed to prevent deformation.
In the primary assembly of the paper folding box according to claim 3, the notch and the latching piece which are engaged with each other are formed on both side end portions of the first and second inner wall portions, respectively. Thus, the first and second inner wall portions can be reliably fixed.
[Brief description of the drawings]
FIG. 1 is a development view of a primary assembly of a paper folding box according to an embodiment of the present invention.
FIG. 2 is a plan view showing an assembled state of a primary assembly of the paper folding box.
FIG. 3 is a plan view showing an assembled state of the primary assembly of the paper folding box.
FIG. 4 is a plan view of a primary assembly of the paper folding box.
5 is a perspective view showing the assembled state of the primary assembly of newspaper made folding box.
FIG. 6 is a partial cross-sectional view of an assembled product of the paper folding box.
FIG. 7 is a perspective view of an assembled product of the paper folding box.
FIG. 8 is a development view of a paper folding box according to a conventional example.
FIG. 9 is a perspective view showing an assembled state of the paper folding box.
FIGS. 10A and 10B are partial plan sectional views of the assembled product of the same paper folding box. FIG.
[Explanation of symbols]
10: primary assembly of paper folding box, 11: bottom of box, 12, 13: first fold, 14, 15: second fold, 16, 17: first outer wall, 18, 19: second , 20, 21: first double fold, 22, 23: second double fold, 24, 25: first inner wall, 26, 27: second inner wall, 28-31: Third crease, 32-35: side plate connecting piece, 36-39: oblique crease, 40-43: bent piece, 44-47: adhesive piece, 48, 49: first side wall, 50-53: corner Part shaping piece, 54-57: notch, 58-61: latching piece, 62-65: wall top plate, 66: virtual rectangle, 67-70: cut, 71, 72: box bottom contact plate, 73, 74: Second side wall

Claims

A rectangular box bottom 11 is connected to the front and rear and the left and right of the box bottom 11 via first folds 12 and 13 and second folds 14 and 15, respectively, and first outer wall parts 16 and 17 arranged to face each other. And the second outer wall portions 18 and 19 and the first double folds 20 and 21 and the second double folds 22 and 23 which are narrow outside the first and second outer wall portions 16 to 19. A primary assembly of a paper folding box having a first inner wall portion 24, 25 and a second inner wall portion 26, 27 respectively connected to each other ,
Side plate connecting pieces 32 to 35 are provided on both side end portions of the first outer wall portions 16 and 17 via third fold lines 28 to 31, respectively.
The side plate connecting pieces 32 to 35 are bent pieces 40 to 43 formed on the base side from the diagonal folds 36 to 39 by the diagonal folds 36 to 39 starting from the corners of the box bottom 11, and the diagonal folds 36 to 39. Each having adhesive pieces 44 to 47 formed on the further front side,
The first inner wall portions 24 and 25 are folded at the first double fold lines 20 and 21 to overlap the first outer wall portions 16 and 17, respectively, and further overlap the first outer wall portions 16 and 17 and first The first side wall portions 48 and 49 formed of the inner wall portions 24 and 25 are folded at the first folds 12 and 13 and overlapped with the box bottom portion 11, and the adhesive pieces 44 to 47 are oblique folds 36 to 39. The second inner wall portions 26 and 27 are folded by the second double fold lines 22 and 23 and are bonded to the second outer wall portions 18 and 19 in a state of being folded and overlapped with the bent pieces 40 to 43. 2 are superposed on the outer wall portions 18 and 19 to form a flat plate, and when the assembly is completed, the adhesive pieces 44 to 47 and the bent pieces 40 to 43 form substantially the same plane ,
Moreover, in the said primary assembly, flat and since paper folding box beforehand folding habit is characterized that you have been granted to the second fold 14, 15 and a third crease 28 to 31 Primary assembly .

The primary assembly of the paper folding box according to claim 1, wherein the second outer wall portions 18, 19 and the bent portions 40 to 43 are formed on both side ends of the first inner wall portions 24, 25 together with the folded pieces 40-43 when the assembly is completed. A primary assembly of a paper folding box , characterized in that corner shaping pieces 50 to 53 arranged between the second inner wall portions 26 and 27 are provided.

The primary assembly of the paper folding box according to claim 1 or 2 , wherein notches 54 to 57 are respectively formed on both sides of the first inner wall portions 24 and 25, and the second inner wall portion 26, 27 is a primary assembly of a paper folding box , in which latching pieces 58 to 61 are formed to be engaged with the notches 54 to 57 when the assembly is completed.