【書類名】 明細書
【発明の名称】 紙製引起し箱
【特許請求の範囲】
【請求項１】 ４辺Ａ〜Ｄを備える四角形の箱底部１１、及び前記４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介してそれぞれ連接される側壁を有する紙製引起し箱であって、
前記折り目ａ１、ｃ１を介して連接される一方側の対向する前記側壁は、組立状態では箱の外側壁となる外壁部Ａ１、Ｃ１とこれに折り目ａ２、ｃ２を介して連結される内壁部Ａ２、Ｃ２を備え、
隣り合う前記側壁の側端に折り目１２、１３を介して連結され、前記箱底部１１の角部ａ〜ｄに基端を発する内折り目１４がそれぞれ設けられ、組立状態では、前記外壁部Ａ１と内壁部Ａ２との間、及び前記外壁部Ｃ１と内壁部Ｃ２との間に折り込まれる側板連結片Ｅ１〜Ｈ１を備え、
また、前記内壁部Ａ２、Ｃ２の両側部には突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ備えると共に、前記折り目ｂ１、ｄ１を介して連結される他方側の対向する前記側壁の両端部に、組立時に該突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６がそれぞれ嵌入して止まる掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６を設け、
更に、前記他方側の側壁を前記箱底部１１に当接した平面状態から、全部の前記側壁を引き起し、前記突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ前記掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に嵌入させて組み立てることを特徴とする紙製引起し箱。
【請求項２】 ４辺Ａ〜Ｄを備える四角形の箱底部１１、及び前記４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介してそれぞれ連接される側壁を有する紙製引起し箱であって、
前記折り目ａ１、ｃ１を介して連接される一方側の対向する前記側壁は、組立状態では箱の外側壁となる外壁部Ａ１、Ｃ１とこれに折り目ａ２、ｃ２を介して連結される内壁部Ａ２、Ｃ２を備え、
隣り合う前記側壁の側端に折り目１２、１３を介して連結され、前記箱底部１１の角部ａ〜ｄに基端を発する内折り目１４がそれぞれ設けられ、組立状態では、前記外壁部Ａ１と内壁部Ａ２との間、及び前記外壁部Ｃ１と内壁部Ｃ２との間に折り込まれる側板連結片Ｅ１〜Ｈ１を備え、
しかも、前記内壁部Ａ２、Ｃ２の横幅は前記辺Ａ、Ｃより僅少の範囲で狭くなって、その中央部には、切り目ａ４、ａ５及びｃ４、ｃ５が左右対称に均等配置され、表面側は前記外壁部Ａ１、Ｃ１に接合される接合部Ａ７、Ｃ７がそれぞれ形成されていると共に、前記内壁部Ａ２、Ｃ２には、前記外壁部Ａ１、Ｃ１の連結部分の両端部ａ９、ａ１０及びｃ９、ｃ１０から、前記切り目ａ４、ａ５及びｃ４、ｃ５に向かい、組立状態では平面状となる折り目ａ１３、ａ１４及びｃ１３、ｃ１４が形成され、
また、前記内壁部Ａ２、Ｃ２の両側部には突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ備えると共に、前記折り目ｂ１、ｄ１を介して連結される他方側の対向する前記側壁の両端部に、組立時に該突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６がそれぞれ嵌入して止まる掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６を設け、
更に、前記他方側の側壁を前記箱底部１１に当接した平面状態から、全部の前記側壁を引き起し、前記突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ前記掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に嵌入させて組み立てることを特徴とする紙製引起し箱。
【請求項３】 請求項１及び２のいずれか１項に記載の紙製引起し箱において、前記折り目ａ２、ｃ２は二重線折り目であることを特徴とする紙製引起し箱。
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】
本発明は、平面状に折り畳んで搬送や保管をすることができ、使用にあっては簡単な操作で全体を組み立てることができる箱本体（即ち、下箱）及びこれに被せる上箱（蓋箱）に適用できる紙製引起し箱に関する。
【０００２】
【従来の技術】
従来、菓子箱は箱本体とその上に被せる上箱とからなって、立体的であるので、保管及び搬送の場合に嵩張るという問題があった。
そこで、本出願人は、先に実開昭６４−３５８２０号公報の記載において、四角形の箱底の周辺に折り曲げ可能な内壁部と外壁部とからなる側壁を設けると共に、隣り合う外壁部を折り曲げ可能な側板連結片で連結し、更に、対向する内壁部の両側に三角状の折り曲げ部を設けると共に、その内側を外壁部に接合した紙製引起し箱を提案した。この紙製引起し箱を使用することによって、紙製引起し箱を平面状に折り畳めて保管、搬送ができ、更に使用する場合には、簡単な操作で周囲の内壁部及び外壁部を引き起こして、箱として使用できるようになっていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、前記公報記載の紙製引起し箱においては、最終の組立の段階で、側板連結片をそれぞれ対向する内壁部と外壁部の間に挟んで、内壁部の両側の三角状の折り曲げ部を固定するのに、感圧式接着剤を使用していたので、感圧式接着剤が新しいうちは支障がないが、古くなると接着剤が働かず、組立ができない場合があるという問題があった。
【０００４】
ここで、両面テープを使用することも考えられるが、接合する折り曲げ部は裏側であるので、組立時に保護テープを剥がすのが面倒であり、更には不用意に接着剤を働かせると、組み立てた紙製引起し箱が歪むという問題があった。
【０００５】
また、前記公報記載の紙製引起し箱においては、箱底の周辺に折り曲げ可能に連結されている外壁部及びその外側に連結されている内壁部の連結折り曲げ線は一本であったので、使用する紙が薄い場合には良いが、少し厚くなると折り曲げ難く、更には、接着剤を使用しないで組み立てる場合には、最終的に内壁部の折り曲げ部分を掛止する必要があるが、外壁部と内壁部との間に隙間がないので、処置に困るという問題が発生した。
本発明はかかる事情に鑑みてなされたもので、搬送や保管時は偏平に形成し、使用時に、接着剤等を主体として用いることなく組立が可能な紙製引起し箱を提供することを目的とする。
【０００６】
【課題を解決するための手段】
前記目的に沿う請求項１記載の紙製引起し箱は、４辺Ａ〜Ｄを備える四角形の箱底部１１、及び前記４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介してそれぞれ連接される側壁を有する紙製引起し箱であって、
前記折り目ａ１、ｃ１を介して連接される一方側の対向する前記側壁は、組立状態では箱の外側壁となる外壁部Ａ１、Ｃ１とこれに折り目ａ２、ｃ２を介して連結される内壁部Ａ２、Ｃ２を備え、
隣り合う前記側壁の側端に折り目１２、１３を介して連結され、前記箱底部１１の角部ａ〜ｄに基端を発する内折り目１４がそれぞれ設けられ、組立状態では、前記外壁部Ａ１と内壁部Ａ２との間、及び前記外壁部Ｃ１と内壁部Ｃ２との間に折り込まれる側板連結片Ｅ１〜Ｈ１を備え、
また、前記内壁部Ａ２、Ｃ２の両側部には突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ備えると共に、前記折り目ｂ１、ｄ１を介して連結される他方側の対向する前記側壁の両端部に、組立時に該突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６がそれぞれ嵌入して止まる掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６を設け、
更に、前記他方側の側壁を前記箱底部１１に当接した平面状態から、全部の前記側壁を引き起し、前記突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ前記掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に嵌入させて組み立てている。
【０００７】
また、請求項２記載の紙製引起し箱は、４辺Ａ〜Ｄを備える四角形の箱底部１１、及び前記４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介してそれぞれ連接される側壁を有する紙製引起し箱であって、
前記折り目ａ１、ｃ１を介して連接される一方側の対向する前記側壁は、組立状態では箱の外側壁となる外壁部Ａ１、Ｃ１とこれに折り目ａ２、ｃ２を介して連結される内壁部Ａ２、Ｃ２を備え、
隣り合う前記側壁の側端に折り目１２、１３を介して連結され、前記箱底部１１の角部ａ〜ｄに基端を発する内折り目１４がそれぞれ設けられ、組立状態では、前記外壁部Ａ１と内壁部Ａ２との間、及び前記外壁部Ｃ１と内壁部Ｃ２との間に折り込まれる側板連結片Ｅ１〜Ｈ１を備え、
しかも、前記内壁部Ａ２、Ｃ２の横幅は前記辺Ａ、Ｃより僅少の範囲で狭くなって、その中央部には、切り目ａ４、ａ５及びｃ４、ｃ５が左右対称に均等配置され、表面側は前記外壁部Ａ１、Ｃ１に接合される接合部Ａ７、Ｃ７がそれぞれ形成されていると共に、前記内壁部Ａ２、Ｃ２には、前記外壁部Ａ１、Ｃ１の連結部分の両端部ａ９、ａ１０及びｃ９、ｃ１０から、前記切り目ａ４、ａ５及びｃ４、ｃ５に向かい、組立状態では平面状となる折り目ａ１３、ａ１４及びｃ１３、ｃ１４が形成され、
また、前記内壁部Ａ２、Ｃ２の両側部には突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ備えると共に、前記折り目ｂ１、ｄ１を介して連結される他方側の対向する前記側壁の両端部に、組立時に該突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６がそれぞれ嵌入して止まる掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６を設け、
更に、前記他方側の側壁を前記箱底部１１に当接した平面状態から、全部の前記側壁を引き起し、前記突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６をそれぞれ前記掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に嵌入させて組み立てている。
【０００８】
請求項３記載の紙製引起し箱は、請求項１及び２のいずれか１項に記載の紙製引起し箱において、前記折り目ａ２、ｃ２は二重線折り目である。
【０００９】
【００１０】
【００１１】
【００１２】
【００１３】
【００１４】
【００１５】
【００１６】
【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き説明し、本発明の理解に供する。
【００１７】
（第１の実施の形態）
まず、図１を参照して、展開状態の本発明の第１の実施の形態に係る紙製引起し箱について説明する。なお、本実施の形態に係る紙製引起し箱は手で組み立てるのに適した構造を有する。
第１の実施の形態に係る紙製引起し箱１０は、紙の厚みが０．３〜１．２ｍｍの表面が化粧用の薄紙で覆われたボール紙（コートボール）からなり、４辺Ａ〜Ｄを備える四角形の箱底部１１と、４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介してそれぞれ連接される外壁部Ａ１〜Ｄ１と、外壁部Ａ１〜Ｄ１の外辺に二重線折り目ａ２〜ｄ２を介してそれぞれ連結される内壁部Ａ２〜Ｄ２と、内壁部Ａ２、Ｃ２の外側に更に折り目ａ３、ｃ３を介して連結される箱底当接片Ａ５、Ａ６、Ｃ５、Ｃ６とから主として構成されていて、それぞれの外壁部Ａ１〜Ｄ１と内壁部Ａ２〜Ｄ２とにより二重の側壁を形成するようになっている。以下、詳細に説明する。なお、図中の破線は折り目を、外形線以外の実線は切り目又は切り込みを表すものとする。
【００１８】
箱底部１１は紙製引起し箱１０の底部を構成する４辺Ａ〜Ｄを備える四角形状（長方形又は正方形）としている。
外壁部Ａ１〜Ｄ１は箱底部１１の４辺Ａ〜Ｄに、幅が１．５〜２．５ｍｍ（この実施の形態では２ｍｍ）の折り目ａ１〜ｄ１を介してそれぞれ連接され、組立状態では箱の外側壁となる。外壁部Ａ１〜Ｄ１の外辺には、幅が１．５〜２．５ｍｍ（この実施の形態では２ｍｍ）の二重線折り目ａ２〜ｄ２を介して、それぞれ組立状態で箱の内側壁となる内壁部Ａ２〜Ｄ２が連結されている。また、隣り合う外壁部Ａ１〜Ｄ１の側端には折り目１２、１３を介して側板連結片Ｅ１〜Ｈ１が連結されている。側板連結片Ｅ１〜Ｈ１には、箱底部１１の角部ａ〜ｄに基端を発する内折り目１４がそれぞれ設けられており、組立状態では、側板連結片Ｅ１〜Ｈ１は外壁部Ａ１と内壁部Ａ２との間、及び外壁部Ｃ１と内壁部Ｃ２との間に折り込まれるようになっている。
【００１９】
内壁部Ａ２、Ｃ２は長方形状からなり、外壁部Ａ１、Ｃ１の外側に二重線折り目ａ２、ｃ２を介して連結され、しかも外側中央部には左右対称に均等配置された切り目ａ４、ａ５及びｃ４、ｃ５によって分離された箱底当接片Ａ５、Ａ６、Ｃ５、Ｃ６が連結されている。しかも、内壁部Ａ２、Ｃ２の横幅は辺Ａ、Ｃより僅少の範囲で狭くなっており、その中央部には、切り目ａ４、ａ５及びｃ４、ｃ５が更に内側まで延長され、その表面側は、組立て時に、外壁部Ａ１、Ｃ１に接着剤（例えば、感圧式接着剤）、両面テープが塗布又は設けられている接合部Ａ７、Ｃ７がそれぞれ形成されている。接合部Ａ７、Ｃ７は、内壁部Ａ２、Ｃ２に折り目ａ１７、ａ１８及びｃ１７、ｃ１８を介して連結されていて、接合部Ａ７、Ｃ７の幅は、内壁部Ａ２、Ｃ２の幅の１／５以下で１／１０以上となっている。この幅が１／５を超えると内壁部Ａ２、Ｃ２の折り畳みが困難となり、一方、１／１０未満では所定の接合力が得られない。また、接合部Ａ７、Ｃ７は、内壁部Ａ２、Ｃ２に折り目ａ１７、ａ１８及びｃ１７、ｃ１８を介して連結されているので、その製作が容易となる他、隙間を有して設けられた外壁部Ａ１、Ｃ１に無理なく接合することができる。
【００２０】
また、内壁部Ａ２、Ｃ２には、外壁部Ａ１、Ｃ１の連結部分の両端部ａ９、ａ１０及びｃ９、ｃ１０から、折り目ａ３、ｃ３と切り目ａ４、ａ５及びｃ４、ｃ５との各交点ａ１１、ａ１２及びｃ１１、ｃ１２に向かっている折り目ａ１３、ａ１４及びｃ１３、ｃ１４が形成されていて、折り目ａ１３、ａ１４及びｃ１３、ｃ１４は組立状態では平面状となるようになっている。
さらに、内壁部Ａ２、Ｃ２の外側両側部にはそれぞれ小さな四角形状の突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６が備えられており、突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６の突出長は紙厚の１〜４倍程度である。この突出長の範囲で、突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６を、掛合穴Ｂ５、Ｂ６、Ｄ５、Ｄ６に容易かつ確実に掛合できるからである。
内壁部Ｂ２、Ｄ２は長方形状からなり、展開状態では外壁部Ｂ１、Ｄ１の外側にそれぞれ二重線折り目ｂ２、ｄ２を介して連結されており、内壁部Ｂ２、Ｄ２の両側には折り目ｂ３、ｄ３を介して略三角形状の折り込み片Ｂ３、Ｂ４及びＤ３、Ｄ４が連結されていて、折り込み片Ｂ３、Ｂ４及びＤ３、Ｄ４は組立状態では外壁部Ａ１と内壁部Ａ２との間、及び外壁部Ｃ１と内壁部Ｃ２との間に折り込まれるようになっている。
【００２１】
箱底部１１の４辺Ａ〜Ｄに折り目ａ１〜ｄ１を介して外壁部Ａ１〜Ｄ１が、また外壁部Ａ１〜Ｄ１に二重線折り目ａ２〜ｄ２を介して内壁部Ａ２〜Ｄ２がそれぞれ連接されているので、折り畳まれた外壁部Ａ１〜Ｄ１と内壁部Ａ２〜Ｄ２との間に隙間が形成される。
内壁部Ｂ２、Ｄ２の両端部には、組立時に突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６がそれぞれ嵌入して止まる掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６が形成されていて、掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６は、内壁部Ｂ２、Ｄ２の外側両端から、突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６の紙厚の程度の幅で切り込みｂ９、ｂ１０及びｄ９、ｄ１０が形成されると共に、その端部が折り目ｂ３、ｄ３に向かう短い切り込みｂ１１、ｂ１２及びｄ１１、ｄ１２が形成されている。
【００２２】
箱底当接片Ａ５、Ａ６、Ｃ５、Ｃ６は内壁部Ａ２、Ｃ２の外側に折り目ａ３、ｃ３を介して連結されており、組立時に箱底部１１に当接するようになっている。
また、前記内壁部Ｂ２、Ｄ２の更に外側に、箱底当接片Ｂ７、Ｄ７が折り目ｂ８、ｄ８を介して設けられている。この箱底当接片Ｂ７、Ｄ７の幅は、前記した箱底当接片Ａ５、Ａ６、Ｃ５、Ｃ６の幅と略同一となっている。
【００２３】
展開状態で以上の構成となった紙製引起し箱１０の工場での一次組立の方法の一例について、図１〜図３を参照しながら説明する。
それぞれの箱底当接片Ｂ７、Ｄ７が外側に設けられている内壁部Ｂ２、Ｄ２を二重線折り目ｂ２、ｄ２を介して内側に１８０度折り曲げて、外壁部Ｂ１、Ｄ１に重ねる。この場合、内壁部Ｂ２、Ｄ２の両側に設けられている折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４は、側板連結片Ｅ１〜Ｈ１に重なることになる。次に、外壁部Ｂ１、Ｄ１を折り目ｂ１、ｄ１を介して内側に１８０度折り曲げる。
【００２４】
この状態で、内壁部Ａ２、Ｃ２を二重線折り目ａ２、ｃ２を介して内側に１８０度曲げて、接合部Ａ７、Ｃ７を外壁部Ａ１、Ｃ１の内側に接合する。この場合、内壁部Ａ２、Ｃ２と、外壁部Ａ１、Ｃ１が平行になるように、折り目ａ１７、ａ１８、ｃ１７、ｃ１８を利用して、接合部Ａ７、Ｃ７の接合位置を二重線折り目ａ２、ｃ２側にする。図２にこの状態を示しており、紙製引起し箱１０は平面状に保持されるので、嵩張らず、搬送が容易であるという特徴がある。
【００２５】
なお、紙製引起し箱１０を円滑に組み立てる必要性から、折り目ａ１３、ａ１４、及びｃ１３、ｃ１４については、外側に十分な折り目癖を付けておくか、１８０度折り返しておくのが好ましい。図３は、理解を容易にするため、外壁部Ｂ１、Ｄ１を９０度曲げた状態で、外壁部Ｃ１、内壁部Ｃ２を開いた状態の紙製引起し箱１０を示している。
【００２６】
この平面状に折り畳まれた紙製引起し箱１０を使用状態の箱に組み立てる手順について、図４及び図５を参照して説明する。
図４（ａ）の状態にある紙製引起し箱１０において、対となる外壁部Ｂ１、Ｄ１を、図４（ｂ）及び図５に示すように、矢印Ｐ、Ｑのように徐々に引き起こすと、側板連結片Ｅ１〜Ｈ１が、外壁部Ａ１、Ｃ１と内壁部Ａ２、Ｃ２の間に折り込まれているので、外壁部Ａ１、Ｃ１が連動して起き上がる。この場合、内壁部Ａ２、Ｃ２の左右対称に形成された斜めの折り目ａ１３、ａ１４、ｃ１３、ｃ１４によって、内壁部Ａ２、Ｃ２の両側部Ａ１７、Ａ１８、Ｃ１７、Ｃ１８が図５に示すように、上方に折れ曲がり、この状態で、外壁部Ａ１、Ｃ１を箱底部１１に対して直角状態に立てる。これによって、側板連結片Ｅ１〜Ｈ１及び折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４は、外壁部Ａ１、Ｃ１に当接状態で外壁部Ａ１、Ｃ１と内壁部Ａ２、Ｃ２の間に折り込まれることになる。
【００２７】
その後、図４（ｃ）に示すように、両方の手の平で、外壁部Ａ１、Ｃ１を挟んで、立ち上がるまで押し立てる。
ここで、折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４が内壁部Ｂ２、Ｄ２に対して直角に曲がると、切り込みｂ９、ｂ１０、ｄ９、ｄ１０と、短い切り込みｂ１１、ｂ１２、ｄ１１、ｄ１２によって形成される突出短片も、折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４と同時に曲がり、内壁部Ｂ２、Ｄ２のこの部分に、掛合穴Ｂ５、Ｂ６、Ｄ５、Ｄ６が形成されることになる。なお、図６の左上に示す詳細図には、内壁部Ａ２の一部を切り欠いた状態の矢印Ｓから見た状態の掛合穴Ｄ６を示している。
【００２８】
以上のようにして紙製引起し箱１０を、略組み立てた状態で、図４（ｄ）に示すように、押し立てた手を、そのまま、親指で手前の内壁部Ａ２、Ｃ２につけて、押し曲げられた両側部Ａ１７、Ｃ１８の突出部Ａ１５、Ｃ１６を内壁部Ｄ２の掛合穴Ｄ６、Ｄ５に嵌合する。
次に、図４（ｅ）に示すように、残された反対側の押し曲げられた両側部Ａ１８、Ｃ１７の突出部Ａ１６、Ｃ１５を内壁部Ｂ２の掛合穴Ｂ５、Ｂ６に嵌合し、組立が完成する。
【００２９】
ここで、外壁部Ｂ１、Ｄ１と内壁部Ｂ２、Ｄ２は折り目ｂ１、ｄ１及び二重線折り目ｂ２、ｄ２を介して折り曲げられているので、それぞれの外壁部Ｂ１、Ｄ１と内壁部Ｂ２、Ｄ２との間に隙間を有し、これによって、掛合穴Ｂ５、Ｂ６、Ｄ５、Ｄ６の深さが紙厚より十分深くなって、それぞれに対応する突出部Ａ１５、Ａ１６、Ｃ１５、Ｃ１６が十分に嵌入する深さを備えている。更には、図５のように、一旦組み立てた紙製引起し箱１０を、突出部Ａ１５、Ａ１６、Ｃ１５、Ｃ１６の掛合状態を外して平面状にすることもできる。
【００３０】
（第２の実施の形態）
次に、本発明の第２の実施の形態に係る紙製引起し箱２０を図７、図８を参照しながら説明する。なお、前記第１の実施の形態に係る紙製引起し箱１０と基本的に同一の構成要素については同一の番号を付してその詳しい説明を省略し、少し異なる構成要素については、第１の実施の形態に係る紙製引起し箱１０の符号に更に「′」を付けて説明する。
【００３１】
この紙製引起し箱２０においては、厚みが約１．６ｍｍの段ボール紙を使用している。折り目ａ１′〜ｄ１′の幅は２．５〜４ｍｍ（この実施の形態では３ｍｍ）となっており、二重線折り目ａ２′〜ｄ２′の幅が５〜８ｍｍ（この実施の形態では６ｍｍ）となっている。これによって、内壁部Ｂ２、Ｄ２と外壁部Ｂ１、Ｄ１の間に十分な隙間を形成して、突出部Ａ１５、Ａ１６、Ｃ１５、Ｃ１６が十分に嵌入できる掛合穴Ｂ５、Ｂ６、Ｄ５、Ｄ６を形成できる。
また、第２の実施の形態に係る紙製引起し箱２０においては、内壁部Ｂ２、Ｄ２の更に外側に設けた箱底当接片Ｂ７、Ｄ７は省略されているが、設けることは自由である。このように、比較的厚みを有する段ボール紙を用いて、工場での組立にあっても平面状となし、使用するときに簡便に箱に組み立てることが可能な紙製引起し箱を提供できる。
【００３２】
（第３の実施の形態）
次に、本発明の第３の実施の形態に係る紙製引起し箱３０を図９〜図１２を参照しながら説明する。
本実施の形態に係る紙製引起し箱３０は、上記した第１及び第２の実施の形態に係る紙製引起し箱１０、２０と異なり、図示しない箱自動組み立て装置を用いて、展開状態の紙製引起し箱３０を平面状に折り畳まれた状態に組み立て可能な構成を有することを特徴とする。なお、本実施の形態は、紙製引起し箱３０を厚肉の段ボール紙を用いて製造する場合である。
【００３３】
図９の展開図において、四角形の箱底部２１の４辺Ａ２０〜Ｄ２０には、折り目ａ２１〜ｄ２１を介して、組立状態では箱の外側壁となる外壁部Ａ２１〜Ｄ２１が連接されている。
外壁部Ａ２１〜Ｄ２１の外辺には、二重線折り目ａ２２〜ｄ２２を介して、組立状態で箱の内側壁となる内壁部Ａ２２〜Ｄ２２がそれぞれ連接されている。
隣り合う外壁部Ａ２１〜Ｄ２１の側端は折り目２２、２３を具備する側板連結片Ｅ２〜Ｈ２を介して連結され、側板連結片Ｅ２〜Ｈ２の中央部分には箱底部２１の角部ａ２０〜ｄ２０に基端を発する内折り目２４がそれぞれ設けられている。そして、箱の組立状態では、側板連結片Ｅ２〜Ｈ２は、外壁部Ａ２１と内壁部Ａ２２との間、及び外壁部Ｃ２１と内壁部Ｃ２２との間に折り込まれる。
【００３４】
内壁部Ａ２２、Ｃ２２の外側に更に折り目ａ２３、ｃ２３を介して箱底当接片Ａ２４、Ａ２５及びＣ２４、Ｃ２５が連結されており、これらの箱底当接片Ａ２４、Ａ２５及びＣ２４、Ｃ２５は、中央部に左右対称に均等配置された切り目ａ２４、ａ２５及びｃ２４、ｃ２５によって分離されている。
内壁部Ｂ２２、Ｄ２２の両側には、それぞれ折り目ｂ２３、ｂ２４及びｄ２３、ｄ２４を介して折り込み片Ｂ２３、Ｂ２４及びＤ２３、Ｄ２４が連結されており、これらの折り込み片Ｂ２３、Ｂ２４及びＤ２３、Ｄ２４は、組立状態では外壁部Ａ２１と内壁部Ａ２２との間、及び外壁部Ｃ２１と内壁部Ｃ２２との間に折り込まれる。
内壁部Ｂ２２、Ｄ２２の中央部には、切り目ｂ２５、ｂ２６及びｄ２５、ｄ２６が左右対称に設けられ、切り目ｂ２５、ｂ２６間及びｄ２５、ｄ２６間には、それぞれ接合部Ｂ２５、Ｄ２５が形成されている。
【００３５】
内壁部Ａ２２、Ｃ２２の横幅は辺Ａ２０、Ｃ２０より僅少の範囲で狭くなって、その中央部には、切り目ａ２４、ａ２５及びｃ２４、ｃ２５が更に内側まで延長され、先端部の表面側には、箱底部２１の周辺部に接合される接合部Ａ２６、Ｃ２６がそれぞれ形成されている。
内壁部Ａ２２、Ｃ２２には、外壁部Ａ２１、Ｃ２１の連結部分の両端部ａ２６、ａ２７及びｃ２６、ｃ２７から、折り目ａ２３、ｃ２３と切り目ａ２４、ａ２５及びｃ２４、ｃ２５との各交点ａ２８、ａ２９及びｃ２８、ｃ２９に向かい、組立状態では平面状となる折り目ａ３０、ａ３１及びｃ３０、ｃ３１が形成されている。
内壁部Ａ２２、Ｃ２２と箱底当接片Ａ２４、Ａ２５、Ｃ２４、Ｃ２５の両側部には突出部Ａ２７、Ａ２８及びＣ２７、Ｃ２８がそれぞれ連接されており、一方、内壁部Ｂ２２、Ｄ２２の両端部には、箱の組立て時に、これらの突出部Ａ２７、Ａ２８及びＣ２７、Ｃ２８がそれぞれ嵌入して止まる掛合穴Ｂ２６、Ｂ２７及びＤ２６、Ｄ２７が設けられている。
【００３６】
上記した構成において、本実施の形態は、内壁部Ｂ２２、Ｄ２２の中央部にも接合部Ｂ２５、Ｄ２５を形成し、この接合部Ｂ２５、Ｄ２５を外壁部Ｂ２１、Ｄ２１の内面下部に接合又は接着したことを特徴とする。
即ち、後述するように、箱自動組み立て装置を用いて、紙製引起し箱３０を組み立てるに際しては、折り曲げ機を用いて内壁部Ｂ２２、Ｄ２２を二重線折り目ｂ２２、ｄ２２を介して内側に折り曲げて、次の工程へ進む際、紙の保有する反発力でせっかく折り曲げた内壁部Ｂ２２、Ｄ２２を元の状態に復帰しようとする。しかし、本実施の形態では、内壁部Ｂ２２、Ｄ２２の中央部にも接合部Ｂ２５、Ｄ２５を形成し、この接合部Ｂ２５、Ｄ２５によって内壁部Ｂ２２、Ｄ２２を外壁部Ｂ２１、Ｄ２１に強力に接合することができるので、このような心配がなく、スムーズに次の工程に進むことができる。
【００３７】
内壁部Ａ２２、Ｃ２２の中央部において切り目ａ２４、ａ２５及びｃ２４、ｃ２５間に形成される部分の先端部に接合部Ａ２６、Ｃ２６が形成されており、この接合部Ａ２６、Ｃ２６は十分な幅を有すると共に箱底当接片Ａ２４、Ａ２５及びＣ２４、Ｃ２５の外周縁より突出しており、十分な面積を有している。従って、接合部Ａ２６、Ｃ２６を箱底部２１の周辺部に接合することによって十分な接合力を確保できる。
【００３８】
図９に示すように、箱底当接片Ａ２４、Ａ２５及びＣ２４、Ｃ２５の先部に、それぞれ、摘まみ片Ａ２９、Ａ３０及びＣ２９、Ｃ３０が取付けられている。この摘まみ片Ａ２９、Ａ３０及びＣ２９、Ｃ３０によって、後述するように、使用後不要となった紙製引起し箱３０を、容易に、再び平板状に折り畳むことができるので、嵩張らず、コンパクトな形態で再使用のために保管したり、あるいは、再生資源として新聞紙等と共に廃棄可能とすることができる。
【００３９】
第１の実施の形態では、折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４は４５°の直角三角形状となっている。従って、紙製引起し箱３０を展開状態から平板状に組み立てる際に（一次組立）、一部の紙製引起し３０について、折り込み片Ｂ３、Ｂ４、Ｄ３、Ｄ４を４５°まで折り畳んだ際に、それらの１辺が平行直角に外壁部Ａ２１、Ｃ２１に当たり、折り畳みが不可能となるおそれがある。
そこで、本実施の形態では、図９に示すように、折り込み片Ｂ２３、Ｂ２４、Ｄ２３、Ｄ２４の１辺を円弧状に形成することによって、抵抗なく折り畳めるようにしている。
【００４０】
また、図９に示すように、突出部Ａ２７、Ａ２８及びＣ２７、Ｃ２８は内壁部Ａ２２、Ｃ２２のみならず箱底当接片Ａ２４、Ａ２５、Ｃ２４、Ｃ２５の両側部にも連接されており、これらの突出部Ａ２７、Ａ２８及びＣ２７、Ｃ２８は、箱の組立て時に、掛合穴Ｂ２６、Ｂ２７及びＤ２６、Ｄ２７に嵌入して掛合可能に構成されている。
従って、掛合穴Ｂ２６、Ｂ２７及びＤ２６、Ｄ２７の嵌入後の掛合をより確実なものとすることができる。
【００４１】
次に、展開状態で図９及び図１０（ａ）に示す構成を有する紙製引起し箱３０の工場での一次組立の方法の一例について、図１０を参照しながら説明する。
図１０（ｂ）に示すように、内壁部Ｂ２２、Ｄ２２を、それぞれ、図示しない折り曲げ機を用いて、二重線折り目ｂ２２、ｄ２２を介して内側に１８０度折り曲げて、外壁部Ｂ２１、Ｄ２１に重ねると共に、接合部Ｂ２５、Ｄ２５を外壁部Ｂ２１、Ｄ２１の内面に接着する。この場合、内壁部Ｂ２２、Ｄ２２の両側に設けられている折り込み片Ｂ２３、Ｂ２４、Ｄ２３、Ｄ２４は、側板連結片Ｅ２〜Ｈ２に重なることになる。
【００４２】
その後、図１０（ｃ）に示すように、図示しない折り曲げ機を用いて、外壁部Ｂ２１、Ｄ２１と内壁部Ｂ２２、Ｄ２２からなる二重側壁を折り目ｂ２１、ｄ２１を介して内側に１８０°折り曲げる。
この状態を保持しながら、図１０（ｄ）に示すように、図示しない折り曲げ機を用いて、内壁部Ａ２２、Ｃ２２を二重線折り目ａ２２、ｃ２２を介して内側に１８０度曲げて、接合部Ａ２６、Ｃ２７を箱底部２１の周辺部に接合する。
【００４３】
また、この平面状に折り畳まれた紙製引起し箱３０は、第１の実施の形態に係る紙製引起し箱１０と同様にして使用状態の箱に組み立てられる（二次組立）ことになり、図１１に組み立て後の紙製引起し箱３０を示す。
【００４４】
図１２に使用状態に組み立てられた紙製引起し箱３０を平板状の折り畳まれた状態に戻す手順を示す。
この手順について簡単に説明すると、図１２（ａ）に示すように、摘まみ片Ａ２９、Ａ３０、Ｃ２９、Ｃ３０を摘んで、突出部Ａ２７、Ａ２８及びＣ２７、Ｃ２８を掛合穴Ｂ２６、Ｂ２７及びＤ２６、Ｄ２７から引き抜くことによって、掛合を容易に解除することができる。
次に、図１２（ｂ）に示すように、外壁部Ｂ２１、Ｄ２１と内壁部Ｂ２２、Ｄ２２からなる二重側壁を折り目ｂ２１、ｄ２１を介して内側に９０°折り曲げた後、外壁部Ａ２１、Ｃ２１と内壁部Ｃ２２、Ｃ２２からなる二重側壁を折り目ａ２１、ｃ２１に介して外側に９０°折り曲げる。
その後、図１２（ｃ）に示すように、外壁部Ａ２１、Ｃ２１と内壁部Ｃ２２、Ｃ２２からなる二重側壁に上方から押圧力をかけて、図１２（ｄ）に示すように保管及び廃棄に便利なコンパクトな形態にする。
【００４５】
（第４の実施の形態）
次に、本発明の第４の実施の形態に係る紙製引起し箱４０を図１３を参照しながら説明する。
本実施の形態に係る紙製引起し箱４０は、上記した第３の実施の形態に係る紙製引起し箱３０と、以下の構成を除いて、実質的に同一の構成を有するものであり、紙製引起し箱３０と同様に、図示しない箱自動組み立て装置を用いて、展開状態の紙製引起し箱４０を平面状に折り畳まれた状態に組み立て可能な構成を有することを特徴とする。従って、紙製引起し箱３０と同一の構成要素は同一の符号で示す。なお、本実施の形態は、紙製引起し箱４０をボール紙（コートボール）を用いて製造する場合である。
【００４６】
図１３に示すように、内壁部Ｂ２２、Ｄ２２の更に外側には、箱底当接片Ｂ２８、Ｄ２８が折り目ｂ２７、ｄ２７を介して連接されている。また、箱底当接片Ｂ２８、Ｄ２８の両側には折り目ｂ２７、ｄ２７と直交する方向に伸延する切り目ｂ２８、ｂ２９、ｄ２８、ｄ２９が設けられている。また、箱底当接片Ｂ２８、Ｄ２８の両側端と切り目ｂ２８、ｂ２９、ｄ２８、ｄ２９の間には折り目ｂ３０〜ｂ３３、ｄ３０〜３３が設けられており、折り目ｂ３０、ｂ３２及びｄ３０、ｄ３２の外側には接合部Ｂ２９、Ｂ３０、Ｄ２９、Ｄ３０が設けられており、これらの接合部Ｂ２９、Ｂ３０、Ｄ２９、Ｄ３０は箱底部２１の周辺部に接着される。
かかる箱底当接片２８、Ｄ２８によって、箱底部２１の周囲を補強できると共に、内壁部Ａ２２〜Ｄ２２と箱底部２１の繋がり状態の外観性を向上することができる。
【００４７】
【発明の効果】
請求項１〜３記載の紙製引起し箱は、最終的な組立の段階で接着剤を使用することがなく、内壁部Ａ２、Ｃ２の両側部に設けられた突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６を、折り目ｂ１、ｄ１を介して連結される側壁の両端部にそれぞれ形成される掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に嵌入して止めるようになっているので、組立が極めて簡単である。
更には、従来の紙製引起し箱では困難であった、一旦組み立てた後の紙製引起し箱を更に元の状態の平面状にすることも簡便にできるので、一旦使用された紙製引起し箱の再使用も可能となった。
【００４８】
特に、請求項３記載の紙製引起し箱は、箱底部１１の周囲に連結される外壁部Ａ１、Ｃ１と、外壁部Ａ１、Ｃ１にそれぞれ連結される内壁部Ａ２、Ｃ２の曲げが、それぞれ折り目ａ１、ｃ１及び二重線折り目である折り目ａ２、ｃ２を介して連接されているので、組み立てた外壁部Ａ１、Ｃ１と内壁部Ａ２、Ｃ２との間に隙間が形成される。これによって、掛合穴Ｂ５、Ｂ６及びＤ５、Ｄ６に深さが形成されるので、突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６を十分に長くして、突出部Ａ１５、Ａ１６及びＣ１５、Ｃ１６の掛かり状態を向上させて、丈夫な紙製引起し箱を提供できる。
【００４９】
【００５０】
【００５１】
【００５２】
【００５３】
【００５４】
【００５５】
【００５６】
【００５７】
【図面の簡単な説明】
【図１】
本発明の第１の実施の形態に係る紙製引起し箱の展開図である。
【図２】
同紙製引起し箱の出荷状態の斜視図である。
【図３】
同紙製引起し箱の組立説明図である。
【図４】
同紙製引起し箱の組立手順の説明図である。
【図５】
同紙製引起し箱の組立手順の拡大説明図である。
【図６】
同紙製引起し箱を組立てた状態の斜視図である。
【図７】
本発明の第２の実施の形態に係る紙製引起し箱の展開図である。
【図８】
同紙製引起し箱の組立説明図である。
【図９】
本発明の第３の実施の形態に係る紙製引起し箱の展開図である。
【図１０】
同紙製引起し箱の組立手順の説明図である。
【図１１】
同紙製引起し箱の組立てた状態の説明図である。
【図１２】
同紙製引起し箱の折り畳み手順の説明図である。
【図１３】
本発明の第４の実施の形態に係る紙製引起し箱の展開図である。
【符号の説明】
１０：紙製引起し箱、１１：箱底部、１２：折り目、１３：折り目、１４：内折り目、２０：紙製引起し箱、２１：箱底部、２２：折り目、２３：折り目、２４：内折り目、３０：紙製引起し箱、４０：紙製引起し箱、Ａ〜Ｄ：辺、Ａ１〜Ｄ１：外壁部、Ａ２〜Ｄ２：内壁部、Ａ５、Ａ６：箱底当接片、Ａ７：接合部、Ａ１５、Ａ１６：突出部、Ａ１７、Ａ１８：側部、Ａ２０：辺、Ａ２１：外壁部、Ａ２２：内壁部、Ａ２４：箱底当接片、Ａ２５：箱底当接片、Ａ２６：接合部、Ａ２７：突出部、Ａ２８：突出部、Ａ２９：摘まみ片、Ａ３０：摘まみ片、ａ〜ｄ：角部、ａ１〜ｄ１：折り目、ａ１′〜ｄ１′：折り目、ａ２〜ｄ２：二重線折り目、ａ２′〜ｄ２′：二重線折り目、ａ３：折り目、ａ４、ａ５：切り目、ａ９、ａ１０：端部、ａ１１、ａ１２：交点、ａ１３、ａ１４：折り目、ａ１７、ａ１８：折り目、ａ２０：角部、ａ２１：折り目、ａ２２：二重線折り目、ａ２３：折り目、ａ２４：切り目、ａ２５：切り目、ａ２６：端部、ａ２７：端部、ａ２８：交点、ａ２９：交点、ａ３０：折り目、ａ３１：折り目、Ｂ３、Ｂ４：折り込み片、Ｂ５、Ｂ６：掛合穴、Ｂ７：箱底当接片、Ｂ２０：辺、Ｂ２１：外壁部、Ｂ２２：内壁部、Ｂ２３：折り込み片、Ｂ２４：折り込み片、Ｂ２５：接合部、Ｂ２６：掛合穴、Ｂ２７：掛合穴、Ｂ２８：箱底当接片、Ｂ２９：接合部、Ｂ３０：接合部、ｂ３、ｂ８：折り目、ｂ９〜ｂ１２：切り込み、ｂ２０：角部、ｂ２１：折り目、ｂ２２：二重線折り目、ｂ２３：折り目、ｂ２４：折り目、ｂ２５：切り目、ｂ２６：切り目、ｂ２７：折り目、ｂ２８：切り目、ｂ２９：切り目、ｂ３０：折り目、ｂ３１：折り目、ｂ３２：折り目、ｂ３３：折り目、Ｃ５、Ｃ６：箱底当接片、Ｃ７：接合部、Ｃ１５、Ｃ１６：突出部、Ｃ１７、Ｃ１８：側部、Ｃ２０：辺、Ｃ２１：外壁部、Ｃ２２：内壁部、Ｃ２４：箱底当接片、Ｃ２５：箱底当接片、Ｃ２６：接合部、Ｃ２７：突出部、Ｃ２８：突出部、Ｃ２９：摘まみ片、Ｃ３０：摘まみ片、ｃ３：折り目、ｃ４、ｃ５：切り目、ｃ９、ｃ１０：端部、ｃ１１、ｃ１２：交点、ｃ１３、ｃ１４：折り目、ｃ１７、ｃ１８：折り目、ｃ２０：角部、ｃ２１：折り目、ｃ２２：二重線折り目、ｃ２３：折り目、ｃ２４：切り目、ｃ２５：切り目、ｃ２６：端部、ｃ２７：端部、ｃ２８：交点、ｃ２９：交点、ｃ３０：折り目、ｃ３１：折り目、Ｄ３、Ｄ４：折り込み片、Ｄ５、Ｄ６：掛合穴、Ｄ７：箱底当接片、Ｄ２０：辺、Ｄ２１：外壁部、Ｄ２２：内壁部、Ｄ２３：折り込み片、Ｄ２４：折り込み片、Ｄ２５：接合部、Ｄ２６：掛合穴、Ｄ２７：掛合穴、Ｄ２８：箱底当接片、Ｄ２９：接合部、Ｄ３０：接合部、ｄ３、ｄ８：折り目、ｄ９〜ｄ１２：切り込み、ｄ２０：角部、ｄ２１：折り目、ｄ２２：二重線折り目、ｄ２３：折り目、ｄ２４：折り目、ｄ２５：切り目、ｄ２６：切り目、ｄ２７：折り目、ｄ２８：切り目、ｄ２９：切り目、ｄ３０：折り目、ｄ３１：折り目、ｄ３２：折り目、ｄ３３：折り目、Ｅ１〜Ｈ１：側板連結片、Ｅ２〜Ｈ２：側板連結片
[Document name] Statement
[Name of invention] Paper lift-up box
[Claims]
[Claim 1] A rectangular box bottom 11 having four sides A to D, andOn the four sides A to Dfolda1 to d1 are connected to each otherA paper pull-out box having side walls,
The opposing side walls on one side connected via the folds a1, c1 include outer wall portions A1, C1 that become the outer walls of the box in an assembled state, and inner wall portions A2, C2 that are connected thereto via folds a2, c2,
The adjacentside wallThe side panel connecting pieces E1 to H1 are connected to the side edges of the outer wall portion A1 and the inner wall portion A2 via folds 12 and 13, and inner folds 14 are formed at the corners a to d of the box bottom 11, respectively, and in the assembled state, the side panel connecting pieces E1 to H1 are folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.Equipped with
Furthermore, the inner wall portions A2 and C2 are provided on both sides with protrusions A15, A16 and C15, C16, respectively,The other opposing side wall connected via the folds b1 and d1At both ends ofDuring assemblyproviding engagement holes B5, B6 and D5, D6 into which the protrusions A15, A16 and C15, C16 are fitted and stopped, respectively;
Furthermore, the aboveThe other side wallFrom the flat state in which it is in contact with the box bottom 11,side walland assembling the paper pull-up box by fitting the protrusions A15, A16 and C15, C16 into the latch holes B5, B6 and D5, D6, respectively.
[Claims2】 A rectangular box bottom 11 having four sides A to D, andOn the four sides A to Dfolda1 to d1 are connected to each otherA paper pull-out box having side walls,
The opposing side walls on one side connected via the folds a1, c1 include outer wall portions A1, C1 that become the outer walls of the box in an assembled state, and inner wall portions A2, C2 that are connected thereto via folds a2, c2,
The adjacentside wallThe side panel connecting pieces E1 to H1 are connected to the side edges of the outer wall portion A1 and the inner wall portion A2 via folds 12 and 13, and inner folds 14 are formed at the corners a to d of the box bottom 11, respectively, and in the assembled state, the side panel connecting pieces E1 to H1 are folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.Equipped with
Moreover, the width of the inner wall portions A2 and C2 is slightly narrower than the sides A and C, and in the center, cuts a4, a5 and c4, c5 areThey are evenly arranged symmetrically,The surface side is formed with joint portions A7, C7 to be joined to the outer wall portions A1, C1, and the inner wall portions A2, C2 are connected to the outer wall portions A1, C1 from both ends a9, a10 and c9, c10.The cuts a4, a5 and c4, c5folds a13, a14 and c13, c14 that become flat in the assembled state,
Furthermore, the inner wall portions A2 and C2 are provided on both sides with protrusions A15, A16 and C15, C16, respectively,The other opposing side wall connected via the folds b1 and d1At both ends ofDuring assemblyproviding engagement holes B5, B6 and D5, D6 into which the protrusions A15, A16 and C15, C16 are fitted and stopped, respectively;
Furthermore, the aboveThe other side wallFrom the flat state in which it is in contact with the box bottom 11,side walland assembling the paper pull-up box by fitting the protrusions A15, A16 and C15, C16 into the latch holes B5, B6 and D5, D6, respectively.
[Claims3】 In the paper pull-out box according to any one of claims 1 and 2, the folds a2 and c2 are double-line folds.A paper lift-up box characterized by:
[Detailed description of the invention]
【0001】
[Technical field to which the invention belongs]
The present invention relates to a paper pull-out box that can be folded flat for transportation and storage, and can be assembled as a whole with simple operations when in use, and can be used as a box body (i.e., bottom box) and an upper box (lid box) that covers it.
【0002】
[Prior art]
Traditionally, confectionery boxes were three-dimensional, consisting of a main box and an upper box that covered it, which made them bulky when storing and transporting.
The applicant previously proposed a paper pull-up box in Japanese Utility Model Application Publication No. 64-35820, which had a rectangular box bottom with side walls consisting of bendable inner and outer wall sections around the periphery, with adjacent outer wall sections connected by bendable side panel connecting pieces, and further had triangular bends on both sides of opposing inner wall sections, the insides of which were joined to the outer wall sections. Using this paper pull-up box, the box could be folded flat for storage and transport, and when in use, the surrounding inner and outer wall sections could be easily raised to use as a box.
【0003】
[Problem the invention aims to solve]
However, in the paper pull-out box described in the above publication, pressure-sensitive adhesive was used to sandwich the side panel connecting pieces between the opposing inner and outer wall portions during the final assembly stage, and to secure the triangular folded portions on both sides of the inner wall portion.While there was no problem when the pressure-sensitive adhesive was new, as it became older the adhesive would no longer work, making assembly impossible.
【0004】
It is possible to use double-sided tape here, but since the folded parts to be joined are on the back side, it would be a hassle to peel off the protective tape during assembly, and there is also the problem that if the adhesive is used carelessly, the assembled paper box could become distorted.
【0005】
Furthermore, in the paper pull-up box described in the above publication, there was only one connecting fold line between the outer wall portion that was foldably connected to the periphery of the box bottom and the inner wall portion that was connected to the outside of that.This was fine when the paper used was thin, but when the paper was slightly thicker it became difficult to fold.Furthermore, when assembling without using adhesive, it was necessary to finally fasten the folded part of the inner wall portion, but since there was no gap between the outer and inner wall portions, it was difficult to deal with this problem.
The present invention was made in consideration of these circumstances, and aims to provide a paper pull-out box that can be formed flat for transportation and storage, and can be assembled when in use without using adhesives or other materials as the main material.
【0006】
[Means to solve the problem]
The paper pull-out box according to claim 1, which is intended to achieve the above-mentioned purpose, has a rectangular box bottom 11 having four sides A to D., andOn the four sides A to Dfolda1 to d1 are connected to each otherA paper pull-out box having side walls,
The opposing side walls on one side connected via the folds a1, c1 include outer wall portions A1, C1 that become the outer walls of the box in an assembled state, and inner wall portions A2, C2 that are connected thereto via folds a2, c2,
The adjacentside wallThe side panel connecting pieces E1 to H1 are connected to the side edges of the outer wall portion A1 and the inner wall portion A2 via folds 12 and 13, and inner folds 14 are formed at the corners a to d of the box bottom 11, respectively, and in the assembled state, the side panel connecting pieces E1 to H1 are folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.Equipped with
Furthermore, the inner wall portions A2 and C2 are provided on both sides with protrusions A15, A16 and C15, C16, respectively,The other opposing side wall connected via the folds b1 and d1At both ends ofDuring assemblyproviding engagement holes B5, B6 and D5, D6 into which the protrusions A15, A16 and C15, C16 are fitted and stopped, respectively;
Furthermore, the aboveThe other side wallFrom the flat state in which it is in contact with the box bottom 11,side wallare raised, and the protrusions A15, A16 and C15, C16 are fitted into the engaging holes B5, B6 and D5, D6, respectively, for assembly.
【0007】
Also, claims2The paper pull-out box described has a rectangular box bottom 11 with four sides A to D., andOn the four sides A to Dfolda1 to d1 are connected to each otherA paper pull-out box having side walls,
The opposing side walls on one side connected via the folds a1, c1 include outer wall portions A1, C1 that become the outer walls of the box in an assembled state, and inner wall portions A2, C2 that are connected thereto via folds a2, c2,
The adjacentside wallThe side panel connecting pieces E1 to H1 are connected to the side edges of the outer wall portion A1 and the inner wall portion A2 via folds 12 and 13, and inner folds 14 are formed at the corners a to d of the box bottom 11, respectively, and in the assembled state, the side panel connecting pieces E1 to H1 are folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.Equipped with
Moreover, the width of the inner wall portions A2 and C2 is slightly narrower than the sides A and C, and in the center, cuts a4, a5 and c4, c5 areThey are evenly arranged symmetrically,The surface side is formed with joint portions A7, C7 to be joined to the outer wall portions A1, C1, and the inner wall portions A2, C2 are connected to the outer wall portions A1, C1 from both ends a9, a10 and c9, c10.The cuts a4, a5 and c4, c5folds a13, a14 and c13, c14 that become flat in the assembled state,
Furthermore, the inner wall portions A2 and C2 are provided on both sides with protrusions A15, A16 and C15, C16, respectively,The other opposing side wall connected via the folds b1 and d1At both ends ofDuring assemblyproviding engagement holes B5, B6 and D5, D6 into which the protrusions A15, A16 and C15, C16 are fitted and stopped, respectively;
Furthermore, the aboveThe other side wallFrom the flat state in which it is in contact with the box bottom 11,side wallare raised, and the protrusions A15, A16 and C15, C16 are fitted into the engaging holes B5, B6 and D5, D6, respectively, for assembly.
【0008】
Claim3The paper lifting box described isIn the paper pull-out box according to any one of claims 1 and 2, the folds a2 and c2 are double-line folds..
【0009】
【0010】
【0011】
【0012】
【0013】
【0014】
【0015】
【0016】
[Embodiment of the invention]
Next, with reference to the attached drawings, we will explain an embodiment of the present invention to help understand the present invention.
【0017】
(First embodiment)
First, referring to Figure 1, we will explain the paper pull-out box according to the first embodiment of the present invention in an unfolded state. Note that the paper pull-out box according to this embodiment is easy to assemble by hand.toIt has a suitable structure.
The paper pull-out box 10 according to the first embodiment is made of cardboard (coated cardboard) with a thickness of 0.3 to 1.2 mm, the surface of which is covered with decorative tissue paper, and has a rectangular box bottom 11 with four sides A to D, andfoldThe box is primarily composed of outer wall sections A1-D1, each connected via creases a1-d1, inner wall sections A2-D2, each connected to the outer edges of the outer wall sections A1-D1 via double creases a2-d2, and box bottom abutment pieces A5, A6, C5, C6, each connected to the outside of the inner wall sections A2, C2 via creases a3, c3, forming a double side wall. Details are provided below. Note that dashed lines in the figures represent creases, and solid lines other than the outline represent cuts or incisions.
【0018】
The box bottom 11 is quadrilateral (rectangle or square) with four sides A to D that form the bottom of the paper pull-out box 10.
The outer wall portions A1 to D1 are attached to the four sides A to D of the box bottom 11, with a width of 1.5 to 2.5 mm (2 mm in this embodiment).foldThe outer wall portions A1 to D1 are connected to each other via creases a1 to d1, which form the outer walls of the box when assembled. The outer edges of the outer wall portions A1 to D1 are connected to the inner wall portions A2 to D2, which form the inner walls of the box when assembled, via double creases a2 to d2, each 1.5 to 2.5 mm wide (2 mm in this embodiment). Side panel connecting pieces E1 to H1 are connected to the side edges of adjacent outer wall portions A1 to D1 via creases 12 and 13. Each of the side panel connecting pieces E1 to H1 has an inner crease 14 extending from a corner a to d of the box bottom 11, so that when assembled, the side panel connecting pieces E1 to H1 are folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.
【0019】
Inner wall portions A2, C2 are rectangular and connected to the outside of outer wall portions A1, C1 via double fold lines a2, c2. Furthermore, box bottom abutment pieces A5, A6, C5, C6 are connected to the center of the outside, separated by equally spaced symmetrical cuts a4, a5 and c4, c5. Furthermore, the width of inner wall portions A2, C2 is slightly narrower than sides A, C, and cuts a4, a5 and c4, c5 extend further inward at the center. The surface side forms joint portions A7, C7, where adhesive (e.g., pressure-sensitive adhesive) or double-sided tape is applied or provided to outer wall portions A1, C1 during assembly. The joints A7 and C7 are connected to the inner wall portions A2 and C2 via folds a17, a18 and c17, c18, and the widths of the joints A7 and C7 are 1/5 or less and 1/10 or more of the widths of the inner wall portions A2 and C2. If this width exceeds 1/5, folding of the inner wall portions A2 and C2 becomes difficult, while if it is less than 1/10, the required joining strength cannot be obtained. Furthermore, because the joints A7 and C7 are connected to the inner wall portions A2 and C2 via folds a17, a18 and c17, c18, they are easy to manufacture and can be joined smoothly to the outer wall portions A1 and C1, which are provided with gaps.
【0020】
Furthermore, folds a13, a14 and c13, c14 are formed on the inner wall portions A2, C2, extending from both ends a9, a10 and c9, c10 of the connecting portion of the outer wall portions A1, C1 toward the intersections a11, a12 and c11, c12 of the folds a3, c3 and the cuts a4, a5 and c4, c5, respectively, and the folds a13, a14 and c13, c14 are designed to be flat when assembled.
Furthermore, small rectangular protrusions A15, A16 and C15, C16 are provided on both outer sides of the inner wall portions A2, C2, respectively, and the protrusion length of protrusions A15, A16 and C15, C16 is approximately 1 to 4 times the paper thickness. This protrusion length range allows protrusions A15, A16 and C15, C16 to easily and securely engage with engagement holes B5, B6, D5, D6.
The inner wall portions B2 and D2 are rectangular in shape, and when unfolded, they are connected to the outside of the outer wall portions B1 and D1 via double fold lines b2 and d2, respectively. Approximately triangular fold-in pieces B3, B4 and D3, D4 are connected to both sides of the inner wall portions B2 and D2 via fold lines b3 and d3, and when assembled, the fold-in pieces B3, B4 and D3, D4 are adapted to be folded between the outer wall portion A1 and the inner wall portion A2, and between the outer wall portion C1 and the inner wall portion C2.
【0021】
On the four sides A to D of the box bottom 11foldThe outer wall portions A1 to D1 are connected to the outer wall portions A1 to D1 via folds a1 to d1, and the inner wall portions A2 to D2 are connected to the outer wall portions A1 to D1 via double-line folds a2 to d2, so that gaps are formed between the folded outer wall portions A1 to D1 and the inner wall portions A2 to D2.
At both ends of the inner wall portions B2 and D2, engagement holes B5, B6 and D5, D6 are formed into which the protrusions A15, A16 and C15, C16 respectively fit and secure during assembly. The engagement holes B5, B6 and D5, D6 have cuts b9, b10 and d9, d10 formed from both outer ends of the inner wall portions B2 and D2 with widths approximately the same as the paper thickness of the protrusions A15, A16 and C15, C16, as well as short cuts b11, b12 and d11, d12 whose ends extend toward the folds b3, d3.
【0022】
Box bottom abutment pieces A5, A6, C5, and C6 are connected to the outside of the inner wall portions A2 and C2 via folds a3 and c3, and are designed to abut against the box bottom portion 11 when assembled.
Furthermore, box bottom abutment pieces B7 and D7 are provided further outside the inner wall portions B2 and D2 via folds b8 and d8. The width of these box bottom abutment pieces B7 and D7 is approximately the same as the width of the box bottom abutment pieces A5, A6, C5 and C6 described above.
【0023】
An example of a method for primary assembly in a factory of a paper pull-out box 10 configured as described above in its unfolded state will be explained with reference to Figures 1 to 3.
The inner wall sections B2 and D2, on which the box bottom contact pieces B7 and D7 are provided on the outside, are folded inward 180 degrees along the double creases b2 and d2, and overlapped with the outer wall sections B1 and D1. In this case, the fold-in pieces B3, B4, D3, and D4 on both sides of the inner wall sections B2 and D2 overlap with the side panel connecting pieces E1 to H1. Next, the outer wall sections B1 and D1 are folded inward 180 degrees along the double creases b2 and d2, and overlapped with the outer wall sections B1 and D1.foldBend inward 180 degrees via b1 and d1.
【0024】
In this state, the inner wall sections A2 and C2 are bent inward 180 degrees along the double folds a2 and c2, and the joints A7 and C7 are joined to the inside of the outer wall sections A1 and C1. In this case, the folds a17, a18, c17, and c18 are used to position the joints A7 and C7 on the double folds a2 and c2 side so that the inner wall sections A2 and C2 and the outer wall sections A1 and C1 are parallel. Figure 2 shows this state, and the paper pull-out box 10 is maintained flat, making it compact and easy to transport.
【0025】
In order to ensure smooth assembly of the paper pull-up box 10, it is preferable to leave sufficient creases on the outside of the folds a13, a14, and c13, c14, or fold them back 180 degrees. For ease of understanding, Figure 3 shows the paper pull-up box 10 with the outer wall sections B1 and D1 bent 90 degrees and the outer wall section C1 and inner wall section C2 open.
【0026】
The procedure for assembling this flat-folded paper pull-out box 10 into a usable box is explained with reference to Figures 4 and 5.
When the pair of outer wall sections B1, D1 of the paper pull-up box 10 in the state shown in Figure 4(a) are gradually pulled up in the direction of arrows P and Q as shown in Figures 4(b) and 5, the outer wall sections A1, C1 rise in unison because the side panel connecting pieces E1-H1 are folded between the outer wall sections A1, C1 and the inner wall sections A2, C2. In this case, the diagonal folds a13, a14, c13, c14 formed symmetrically on the left and right sides of the inner wall sections A2, C2 cause the side sections A17, A18, C17, C18 of the inner wall sections A2, C2 to bend upward as shown in Figure 5, and in this state, the outer wall sections A1, C1 stand at right angles to the box bottom 11. As a result, the side panel connecting pieces E1 to H1 and the fold-in pieces B3, B4, D3, D4 are folded in between the outer wall portions A1, C1 and the inner wall portions A2, C2 while abutting against the outer wall portions A1, C1.
【0027】
Then, as shown in Figure 4(c), hold the outer wall portions A1 and C1 between the palms of both hands and push them up until they stand up.
Here, when fold-in pieces B3, B4, D3, and D4 bend at right angles to inner wall portions B2 and D2, the protruding short pieces formed by cuts b9, b10, d9, and d10 and short cuts b11, b12, d11, and d12 also bend at the same time as fold-in pieces B3, B4, D3, and D4, forming engagement holes B5, B6, D5, and D6 in this portion of inner wall portions B2 and D2. The detailed view in the upper left of Figure 6 shows engagement hole D6 as viewed from arrow S with a portion of inner wall portion A2 cut away.
【0028】
When the paper pull-up box 10 is roughly assembled as described above, as shown in Figure 4(d), place your upright hands with your thumbs on the inner wall portions A2 and C2 at the front, and fit the protruding portions A15 and C16 of the bent side portions A17 and C18 into the hooking holes D6 and D5 of the inner wall portion D2.
Next, as shown in Figure 4(e), the protrusions A16 and C15 of the remaining opposite pressed-bent side portions A18 and C17 are fitted into the engaging holes B5 and B6 of the inner wall portion B2, completing the assembly.
【0029】
Here, the outer wall sections B1 and D1 and the inner wall sections B2 and D2 areFolds b1, d1 and double line folds b2, d2As the paper is folded through these holes, there is a gap between the outer wall portions B1, D1 and the inner wall portions B2, D2, and as a result, the depth of the latching holes B5, B6, D5, D6 is sufficiently greater than the thickness of the paper, and the corresponding protrusions A15, A16, C15, C16 can be inserted into the holes. Furthermore, as shown in Figure 5, the assembled paper pull-out box 10 can be made flat by releasing the latching of the protrusions A15, A16, C15, C16.
【0030】
(Second embodiment)
Next, a paper pull-out box 20 according to a second embodiment of the present invention will be described with reference to Figures 7 and 8. Components that are essentially the same as those in the paper pull-out box 10 according to the first embodiment will be given the same numbers and detailed descriptions will be omitted, while components that are slightly different will be described with an additional "'" added to the reference numbers of the paper pull-out box 10 according to the first embodiment.
【0031】
This paper pull-out box 20 uses cardboard with a thickness of approximately 1.6 mm.foldThe width of a1' to d1' is 2.5 to 4 mm (3 mm in this embodiment), and the width of the double fold line a2' to d2' is 5 to 8 mm (6 mm in this embodiment), which allows a sufficient gap to be formed between the inner wall portions B2, D2 and the outer wall portions B1, D1, forming the engaging holes B5, B6, D5, D6 into which the protrusions A15, A16, C15, C16 can be fully inserted.
Furthermore, in the paper pull-up box 20 according to the second embodiment, the box bottom abutment pieces B7, D7 provided further outside the inner wall portions B2, D2 are omitted, but they may be provided as an option. In this way, a paper pull-up box can be provided that uses relatively thick corrugated cardboard, remains flat even when assembled in a factory, and can be easily assembled into a box when in use.
【0032】
(Third embodiment)
Next, a paper pull-out box 30 relating to the third embodiment of the present invention will be described with reference to Figures 9 to 12.
The paper pull-up box 30 of this embodiment differs from the paper pull-up boxes 10 and 20 of the first and second embodiments described above in that it has a configuration that allows the paper pull-up box 30 in an unfolded state to be assembled into a flat folded state using an automatic box assembly device (not shown). Note that this embodiment is a case in which the paper pull-up box 30 is manufactured using thick corrugated cardboard.
【0033】
In the developed view of Figure 9, the four sides A20 to D20 of the rectangular box bottom 21 arefoldExternal wall portions A21 to D21, which become the outer walls of the box in the assembled state, are connected via a21 to d21.
The inner wall portions A22 to D22, which become the inner walls of the box when assembled, are connected to the outer edges of the outer wall portions A21 to D21 via double-line folds a22 to d22, respectively.
The side edges of adjacent outer wall portions A21 to D21 are connected via side panel connecting pieces E2 to H2 having folds 22, 23, and the central portions of the side panel connecting pieces E2 to H2 each have an inner fold 24 that originates at the corners a20 to d20 of the box bottom 21. When the box is assembled, the side panel connecting pieces E2 to H2 are folded between the outer wall portion A21 and the inner wall portion A22, and between the outer wall portion C21 and the inner wall portion C22.
【0034】
Box bottom abutment pieces A24, A25 and C24, C25 are further connected to the outside of the inner wall portions A22, C22 via folds a23, c23, and these box bottom abutment pieces A24, A25 and C24, C25 are separated by cuts a24, a25 and c24, c25 which are evenly spaced symmetrically in the center.
Folded pieces B23, B24 and D23, D24 are connected to both sides of the inner wall portions B22, D22 via folds b23, b24 and d23, d24, respectively, and these folded pieces B23, B24 and D23, D24 are folded between the outer wall portion A21 and the inner wall portion A22, and between the outer wall portion C21 and the inner wall portion C22 when assembled.
In the center of the inner wall portions B22 and D22, cuts b25, b26 and d25, d26 are provided symmetrically on the left and right, and joints B25 and D25 are formed between the cuts b25 and b26 and between d25 and d26, respectively.
【0035】
The width of the inner wall portions A22 and C22 is slightly narrower than the sides A20 and C20, and in the center, cuts a24, a25 and c24, c25 extend further inward, and joints A26 and C26 are formed on the surface side of the tip, which are joined to the peripheral portion of the box bottom portion 21.
In the inner wall portions A22 and C22, folds a30, a31 and c30, c31 are formed from both ends a26, a27 and c26, c27 of the connecting portion of the outer wall portions A21 and C21 toward the intersections a28, a29 and c28, c29 of the folds a23, c23 and the cuts a24, a25 and c24, c25, respectively, and these folds become flat when assembled.
Protrusions A27, A28 and C27, C28 are connected to both sides of the inner wall portions A22, C22 and the box bottom abutment pieces A24, A25, C24, C25, respectively, while latching holes B26, B27 and D26, D27 are provided at both ends of the inner wall portions B22, D22, into which these protrusions A27, A28 and C27, C28, respectively, fit and secure when the box is assembled.
【0036】
In the above-mentioned configuration, this embodiment is characterized in that joints B25 and D25 are also formed in the central parts of the inner wall parts B22 and D22, and these joints B25 and D25 are joined or adhered to the lower inner surfaces of the outer wall parts B21 and D21.
That is, as described below, when assembling the paper pull-up box 30 using an automated box assembly device, a folding machine is used to fold the inner wall portions B22, D22 inward along the double creases b22, d22, and when proceeding to the next process, the resilience of the paper attempts to return the folded inner wall portions B22, D22 to their original state. However, in this embodiment, joint portions B25, D25 are also formed in the center of the inner wall portions B22, D22, and these joint portions B25, D25 can firmly join the inner wall portions B22, D22 to the outer wall portions B21, D21, eliminating this concern and allowing for smooth progression to the next process.
【0037】
Joints A26 and C26 are formed at the tip of the portion formed between cuts a24, a25 and c24, c25 in the center of inner wall portions A22 and C22. These joints A26 and C26 have sufficient width and protrude beyond the outer peripheral edges of box bottom abutment pieces A24, A25 and C24, C25, providing sufficient area. Therefore, sufficient joining strength can be ensured by joining joints A26 and C26 to the peripheral portion of box bottom portion 21.
【0038】
As shown in Figure 9, gripping pieces A29, A30 and C29, C30 are attached to the tips of the box bottom contact pieces A24, A25 and C24, C25, respectively. These gripping pieces A29, A30 and C29, C30 allow the paper pull-up box 30, which is no longer needed after use, to be easily folded back into a flat shape, as will be described later. This means that it can be stored in a compact, non-bulky form for reuse, or disposed of as a recyclable resource along with newspapers, etc.
【0039】
In the first embodiment, the folding pieces B3, B4, D3, and D4 are in the shape of a 45° right triangle. Therefore, when assembling the paper pull-up box 30 from an unfolded state into a flat shape (primary assembly), for some paper pull-up boxes 30, when folding the folding pieces B3, B4, D3, and D4 to 45°, one side of each may come into contact with the outer wall portions A21 and C21 at a parallel right angle, making folding impossible.
Therefore, in this embodiment, as shown in Figure 9, one side of the folding pieces B23, B24, D23, and D24 is formed into an arc shape so that they can be folded without resistance.
【0040】
Furthermore, as shown in Figure 9, protrusions A27, A28 and C27, C28 are connected not only to the inner wall portions A22, C22 but also to both sides of the box bottom abutment pieces A24, A25, C24, C25. These protrusions A27, A28 and C27, C28 are connected to the engagement holes B26, B27 and D26, D27 when the box is assembled.toIt is configured to be engageable by fitting.
Therefore, the engagement after insertion into the engagement holes B26, B27 and D26, D27 can be made more reliable.
【0041】
Next, an example of a method for primary assembly in a factory of a paper pull-out box 30 having the configuration shown in Figures 9 and 10(a) in its unfolded state will be described with reference to Figure 10.
As shown in Figure 10(b), the inner wall portions B22, D22 are folded inward 180 degrees along the double creases b22, d22 using a folding machine (not shown) to overlap the outer wall portions B21, D21, and the joints B25, D25 are adhered to the inner surfaces of the outer wall portions B21, D21. In this case, the folded-in pieces B23, B24, D23, D24 on both sides of the inner wall portions B22, D22 overlap the side panel connecting pieces E2 to H2.
【0042】
Then, as shown in Figure 10(c), a folding machine (not shown) is used to create a double side wall consisting of outer wall portions B21, D21 and inner wall portions B22, D22.foldBend inward 180 degrees via b21 and d21.
While maintaining this state, as shown in Figure 10 (d), using a folding machine not shown, the inner wall portions A22 and C22 are bent inward 180 degrees along the double folds a22 and c22, and the joints A26 and C27 are joined to the peripheral portion of the box bottom 21.
【0043】
Furthermore, this flat-folded paper pull-up box 30 is assembled into a box in a usable state (secondary assembly) in the same manner as the paper pull-up box 10 of the first embodiment, and Figure 11 shows the assembled paper pull-up box 30.
【0044】
Figure 12 shows the steps for returning the assembled paper pull-out box 30 to its flat, folded state.
To briefly explain this procedure, as shown in Figure 12 (a), the engagement can be easily released by pinching the gripping pieces A29, A30, C29, C30 and pulling out the protrusions A27, A28 and C27, C28 from the engagement holes B26, B27 and D26, D27.
Next, as shown in Figure 12(b), a double side wall consisting of outer wall portions B21, D21 and inner wall portions B22, D22 isfoldAfter bending the sheet 90° inward via b21 and d21, a double side wall consisting of outer wall portions A21 and C21 and inner wall portions C22 and C22 is formed.foldBend it outward by 90 degrees through a21 and c21.
Then, as shown in Figure 12(c), a pressing force is applied from above to the double side wall consisting of outer wall portions A21, C21 and inner wall portions C22, C22, to form a compact shape that is convenient for storage and disposal, as shown in Figure 12(d).
【0045】
(Fourth embodiment)
Next, a paper pull-out box 40 relating to the fourth embodiment of the present invention will be described with reference to Figure 13.
The paper pull-up box 40 of this embodiment has substantially the same configuration as the paper pull-up box 30 of the third embodiment described above, except for the following configuration. Like the paper pull-up box 30, it is characterized by its configuration, which allows the unfolded paper pull-up box 40 to be assembled into a flat folded state using an automated box assembly device (not shown). Therefore, components that are the same as those in the paper pull-up box 30 are indicated by the same reference numerals. Note that this embodiment is a case in which the paper pull-up box 40 is manufactured using cardboard (coated cardboard).
【0046】
As shown in Figure 13, box bottom contact pieces B28, D28 are connected further outside inner wall portions B22, D22 via folds b27, d27. Furthermore, cuts b28, b29, d28, d29 are provided on both sides of box bottom contact pieces B28, D28, extending in a direction perpendicular to folds b27, d27. Furthermore, folds b30-b33, d30-33 are provided between both side ends of box bottom contact pieces B28, D28 and cuts b28, b29, d28, d29. Joints B29, B30, D29, D30 are provided outside folds b30, b32 and d30, d32, and these joints B29, B30, D29, D30 are adhered to the peripheral portion of box bottom 21.
Such box bottom abutment pieces 28, D28 can reinforce the periphery of the box bottom 21 and improve the appearance of the connection between the inner wall portions A22 to D22 and the box bottom 21.
【0047】
[Effects of the invention]
Claim1-3The paper pull-out box described does not use adhesive in the final assembly stage, and the protrusions A15, A16 and C15, C16 provided on both sides of the inner wall portions A2, C2 areSide walls connected via folds b1 and d1The screws are fitted into engaging holes B5, B6 and D5, D6 formed at both ends of the screws, respectively, and are fastened thereto, making assembly extremely simple.
Furthermore, since the paper pull-up box can be easily restored to its original flat state after it has been assembled, which was difficult with conventional paper pull-up boxes, it is now possible to reuse a paper pull-up box that has been used once.
【0048】
In particular, the paper lift-up box according to claim 3 is, an outer wall portion connected to the periphery of the box bottom portion 11A1, C1and the exterior wallA1, C1Inner wall portions connected toA2, C2The bending ofFolds a1, c1 and double-line folds a2, c2The assembled outer wall section is connected viaA1, C1and inner wallA2, C2This creates a gap between the hook holes B5, B6 and D5, D6, so that the hook holes B5, B6 and D5, D6 can be made deep, and the protrusions A15, A16 and C15, C16 can be made sufficiently long to improve the hooking condition of the protrusions A15, A16 and C15, C16, thereby providing a sturdy paper pull-out box.
【0049】
【0050】
【0051】
【0052】
【0053】
【0054】
【0055】
【0056】
【0057】
[Brief description of the drawing]
[Figure 1]
This is an exploded view of a paper pull-out box relating to the first embodiment of the present invention.
[Figure 2]
This is an oblique view of the paper pull-out box in its shipping state.
[Figure 3]
This is an assembly instruction diagram for the paper pull-out box.
[Figure 4]
This is an explanatory diagram of the assembly procedure for the paper pull-out box.
[Figure 5]
An enlarged explanatory diagram of the assembly procedure for the paper pull-out box.
[Figure 6]
This is an oblique view of the assembled paper pull-out box.
[Figure 7]
This is an exploded view of a paper pull-out box relating to the second embodiment of the present invention.
[Figure 8]
This is an assembly instruction diagram for the paper pull-out box.
[Figure 9]
This is an exploded view of a paper pull-out box relating to the third embodiment of the present invention.
[Figure 10]
This is an explanatory diagram of the assembly procedure for the paper pull-out box.
[Figure 11]
This is an explanatory diagram of the assembled paper pull-out box.
[Figure 12]
This is an explanatory diagram of the folding procedure for the paper pull-out box.
[Figure 13]
This is an exploded view of a paper pull-out box relating to the fourth embodiment of the present invention.
[Symbol explanation]
10: Paper pull-up box, 11: Box bottom, 12: Fold, 13: Fold, 14: Inner fold, 20: Paper pull-up box, 21: Box bottom, 22: Fold, 23: Fold, 24: Inner fold, 30: Paper pull-up box, 40: Paper pull-up box, A-D: Sides, A1-D1: Outer wall, A2-D2: Inner wall, A5, A6: Box Bottom contact piece, A7: Joint part, A15, A16: Projection part, A17, A18: Side part, A20: Side, A21: Outer wall part, A22: Inner wall part, A24: Box bottom contact piece , A25: Box bottom contact piece, A26: Joint part, A27: Projection part, A28: Projection part, A29: Knob piece, A30: Knob piece, a to d: Corner part, a1 to d1:fold, a1′ to d1′:fold, a2 to d2: double line crease, a2' to d2': double line crease, a3: crease, a4, a5: cut, a9, a10: end, a11, a12: intersection, a13, a14: crease, a17, a18: crease, a20: corner, a21:fold, a22: double line crease, a23: crease, a24: cut, a25: cut, a26: edge, a27: edge, a28: intersection, a29: intersection, a30: crease, a31: crease, B3, B4: fold-in piece, B5, B6: hook-in hole, B7: box bottom abutment piece, B20: side, B21: outer wall, B22: inner wall, B23: fold-in piece, B24: fold-in piece, B25: joint, B26: hook-in hole, B27: hook-in hole, B28: box bottom abutment piece, B29: joint, B30: joint, b3, b8: crease, b9 to b12: cut, b20: corner, b21:fold,b22: double line crease, b23: crease, b24: crease, b25: cut, b26: cut, b27: crease, b28: cut, b29: cut, b30: crease, b31: crease, b32: crease, b33: crease, C5, C6: box bottom abutment piece, C7: joint, C15, C16: protrusion, C17, C18: side, C20: edge, C 21: outer wall portion, C22: inner wall portion, C24: box bottom abutment piece, C25: box bottom abutment piece, C26: joint portion, C27: protrusion portion, C28: protrusion portion, C29: gripping piece, C30: gripping piece, c3: fold, c4, c5: cut, c9, c10: end portion, c11, c12: intersection, c13, c14: fold, c17, c18: fold, c20: corner portion, c21:fold, c22: double line crease, c23: crease, c24: cut, c25: cut, c26: edge, c27: edge, c28: intersection, c29: intersection, c30: crease, c31: crease, D3, D4: fold-in piece, D5, D6: hook-in hole, D7: box bottom abutment piece, D20: edge, D21: outer wall portion, D22: inner wall portion, D23: fold-in piece, D24: fold-in piece, D25: joint portion, D26: hook-in hole, D27: hook-in hole, D28: box bottom abutment piece, D29: joint portion, D30: joint portion, d3, d8: crease, d9 to d12: cut, d20: corner portion, d21:fold, d22: Double crease, d23: Crease, d24: Crease, d25: Slit, d26: Slit, d27: Crease, d28: Slit, d29: Slit, d30: Crease, d31: Crease, d32: Crease, d33: Slit, E1-H1: Side panel connecting piece, E2-H2: Side panel connecting piece