JP3911176B2

JP3911176B2 - Folding container

Info

Publication number: JP3911176B2
Application number: JP2002069064A
Authority: JP
Inventors: 武志荒川
Original assignee: Gifu Plastic Industry Co Ltd
Current assignee: Gifu Plastic Industry Co Ltd
Priority date: 2002-03-13
Filing date: 2002-03-13
Publication date: 2007-05-09
Anticipated expiration: 2022-03-13
Also published as: JP2003267361A

Description

【０００１】
【発明の属する技術分野】
本発明は、折り畳みコンテナ、特に口枠無しのタイプの折り畳みコンテナに関するものである。
【０００２】
【従来の技術】
従来から、矩形状の底板の対向する一対の辺にそれぞれ回動自在に取付けた一対の第１の側板と、対向する他の一対の辺に回動自在に取付けた一対の第２の側板とを、一対の第１の側板を倒した上に一対の第２の側板を倒した状態で折り畳み且つ一対の第２の側板を起立させた後に一対の第１の側板を起立させて箱形状に組み立てる口枠無しの折り畳みコンテナが知られている。
【０００３】
このような折り畳みコンテナにおいては、重量を軽くし且つ合成樹脂材料の使用量を削減したり、あるいは箱状に組み立てた状態における通気性を確保したりするために底板、第１の側板、第２の側板に多数の孔を形成することが行われている。
【０００４】
また、従来の折り畳みコンテナにおいては第１の側板にロック部を横方向に移動自在に設け、第１の側板を回動する際にはロック部を第１の側板内に引き込ませた状態で回動して第１の側板の側端部を先に起立させている第２の側板の内面部の側端に対向させ、この状態でロック部を横方向に突出させる操作を行ってロック部を先に起立させている第２の側板のロック溝に嵌め込んでロックするようにしていた。
【０００５】
ところが、このような従来例においては、ロック部を第１の側板を回動する際に第１の側板内に引き込ませて回動しているのであるが、誤ってロック部が第１の側板から突出した状態で回動すると前述のように先に起立している第２の側板に多数の孔が形成してあるため先に起立させている第２の側板が垂直姿勢でなく、少しでも内側に傾くような姿勢となっていると、ロック部の先端が孔に引っ掛かってスムーズに回動できないという問題があった。また、上記従来例にあっては、第１の側板を回動して起立させた後に、ロックのためにロック部を第１の側板の側端部よりも外側方に突出させる操作を必要として操作が面倒となるものである。
【０００６】
そこで、本発明の発明者は本発明に至る過程で、第１の側板を回動する際に、ロック部を第１の側板よりも外側方に突出させた状態で回動するようなことを考えた。これだと、起立させた後にロック部を外側方に突出させる操作を必要としないが、このように、ロック部を第１の側板よりも外側方に突出させた状態で回動しようとすると、前述のように先に起立している第２の側板に多数の孔が形成してあるため、先に起立させている第２の側板が垂直姿勢でなく、少しでも内側に傾くような姿勢となっていると、ロック部の先端が孔に引っ掛かってスムーズに回動できないという事態が発生し、組み立て、折り畳みがし難いということが判明した。
【０００７】
【発明が解決しようとする課題】
本発明は上記の問題点に鑑みて発明したものであり、第１の側板を回動させる際に先に起立させている多数の孔を設けた第２の側板にロック部が引っ掛かることなく、スムーズに回動でき、また、第１の側板を回動させてロック部をロックさせるに当たって、ロック部を第１の側板から突出させる操作を必要とせず、組み立て作業が容易となる折り畳みコンテナを提供することを課題とするものである。
【０００８】
【課題を解決するための手段】
上記課題を達成するため本発明の折り畳みコンテナは、矩形状の底板１の対向する一対の辺にそれぞれ回動自在に取付けた一対の第１の側板２ａと、対向する他の一対の辺に回動自在に取付けた一対の第２の側板２ｂとを、一対の第１の側板２ａを倒した上に一対の第２の側板２ｂを倒した状態で折り畳み且つ一対の第２の側板２ｂを起立させた後に一対の第１の側板２ａを起立させて箱形状に組み立てる折り畳みコンテナ３であって、第１の側板２ａに側端部から外側方に突出するロック部４を設け、第２の側板２ｂに起立状態で第１の側板２ａに設けたロック部４がはめ込まれるロック受け部５を設け、少なくとも第２の側板２ｂに多数の孔６を形成すると共に、第２の側板２ｂが起立して内側にやや傾いた状態で第１の側板２ａを回動する際に該第１の側板２ａの側端部から外側方に突出するロック部４の先端が描く回動軌跡に対応する第２の側板２ｂの内面部をロック部４の先端が摺接移動可能な摺接案内面７として成ることを特徴とするものである。このような構成とすることで、第１の側板２ａを回動する際に、先に起立させている多数の孔６を形成した第２の側板２ｂが垂直姿勢でなく、内側に傾くような姿勢となって第１の側板２ａの側端部から外側方に突出するロック部４の先端が第２の側板２ｂの内面に当たるような場合が生じてもロック部４の先端が摺接案内面７をガイドとして移動できて孔６に引っ掛かることなくスムーズに回動できることになる。また、第１の側板２ａを回動させてロック部４をロックさせるに当たって、ロック部４を第１の側板２ａから突出させる操作を必要とせず、組み立て作業が容易となるものである。
【０００９】
また、第１の側板２ａの側端部から外側方に突出したロック部４を上下移動自在に設け、第２の側板２ｂの内面の側端部にロック受け部５を突設し、このロック受け部５に突出先端面に上下に開口する突出先端開口部９を有し且つ第２の側板２ｂの内面に沿った方向において上部又は下部に出し入れ用開口部１０を有する縦断面略Ｌ状をしたＬ状溝部１１を形成し、第２の側板２ｂが起立した状態で第１の側板２ａのロック部４をＬ状溝部１１の出し入れ用開口部１０から出し入れ自在とし、ロック部４がＬ状溝部１１内に位置した状態でロック部４が出し入れ用開口部１０に対向する位置に位置した状態がロック解除状態、出し入れ用開口部１０に対向しない位置に位置している状態がロック状態となるように設定することが好ましい。このような構成とすることで、ロック部４のロック受け部５へのロック、ロック解除がいずれもロック部４の上下方向の移動により行えるものであり、これにより、第１の側板２ａを回動して起立させたり倒したりするために第１の側板２ａの上端部を手で掴んだまま、指を上下方向に移動させることでロック部４を上下方向に移動する動作ができるものであって、簡単な操作で第１の側板２ａの上端部を手で掴んで行う回動操作に連続してロック操作ができると共に、第１の側板２ａの上端部を手で掴んだ状態でロック部４を上下方向に移動させてロックを解除させて第１の側板２ａの上端部を手で掴んだまま第１の側板２ａを倒す動作を行うことができるものである。
【００１０】
【発明の実施の形態】
以下本発明の実施形態につき説明する。
【００１１】
本発明の折り畳みコンテナ３は、図１乃至図６に示すように、合成樹脂製の矩形状の底板１の対向する一対の辺にそれぞれ一対の第１の側板２ａを回動自在に取付け、対向する他の一対の辺に一対の第２の側板２ｂを回動自在に取付けてあり、一対の第１の側板２ａを倒した上に一対の第２の側板２ｂを倒した状態で折り畳み且つ一対の第２の側板２ｂを起立させた後に一対の第１の側板２ａを起立させて箱形状に組み立てるようになっている。
【００１２】
折り畳みコンテナ３は重量を軽くし且つ合成樹脂材料の使用量を削減したり、あるいは箱状に組み立てた状態における通気性を確保したりするために底板１、一対の第１の側板２ａ、一対の第２の側板２ｂには略全面にわたって多数の孔６が形成してある。
【００１３】
折り畳みコンテナ３は底板１が長方形をしていて折り畳んだ際に平面視長方形となり且つ箱状に組み立てた際に平面視長方形の箱となるタイプのものと、底板１が正方形をしていて折り畳んだ際に平面視正方形となり且つ箱状に組み立てた際に平面視正方形の箱となるタイプのものとがあり、本発明においては上記いずれのタイプの折り畳みコンテナであってもよいものであるが、添付図面には底板１が長方形をしている実施形態を示している。以下、底板１が長方形の場合を例として説明する。そして、以下の説明においては、第１の側板２ａを短辺側の側板とし、第２の側板２ｂを長辺側の側板として説明する。もちろん、本発明においては第１の側板２ａが長辺側の側板、第２の側板２ｂが短辺側の側板であってもよい。
【００１４】
合成樹脂製の長方形状の底板１の対向する短辺側の辺には第１の側板２ａである短辺側の側板が回動自在に取付けてあり、また、底板１の対向する長辺側の辺には第２の側板２ｂである長辺側の側板が回動自在に取付けてある。
【００１５】
短辺側の側板である第１の側板２ａは図６に示すように、上下方向の長さが底板１の長辺側の長さの１／２以下の長さとなっていて、回動して折り畳んだ場合、対となった第１の側板２ａ同士が重複しないようになっている。また、添付図面の実施形態では長辺側の側板である第２の側板２ｂは図４に示すように、上下方向の長さが底板１の短辺側の長さの１／２以下の長さとなっていて、回動して折り畳んだ場合、対となった第２の側板２ｂ同士が重複しないようになっている。
【００１６】
第１の側板２ａ、第２の側板２ｂはいずれも下端部を図９、図１０に示すように、横軸部１２ａ、１２ｂにより底板１に回動自在に取付けてある。
【００１７】
ここで、対となった第１の側板２ａの底板１への各枢支部分の高さ位置（横軸部１２ａ、１２ａの高さ位置）は同じ高さ位置となっている。また、対となった第２の側板２ｂの底板１への各枢支部分の高さ位置（横軸部１２ｂ、１２ｂの高さ位置）は同じ高さ位置となっている。そして、第１の側板２ａの底板１への枢支位置（横軸部１２ａ、１２ｂの高さ位置）と第２の側板２ｂの底板１への枢支部分の高さ位置（横軸部１２ａ、１２ａの高さ位置）とは高さを違わせてあり、第１の側板２ａの枢支部分の高さ位置よりも第２の側板２ｂの枢支部分の高さ位置を高くしてあり、折り畳むに当たっては、先に底板１の上に第１の側板２ａを折り畳み、次に、後から第２の側板２ｂを折り畳んで一対の第１の側板２ａの上に一対の第２の側板２ｂを重ねるようになっている。
【００１８】
添付図面に示す実施形態においては、底板１の上面部の一方の一対の対向する辺には立ち上がり突部１３ａが設けてあり、他方の一対の対向する辺には立ち上がり突部１３ｂが設けてあり、立ち上がり突部１３ａよりも立ち上がり突部１３ｂの方が高さが高いものである。この立ち上がり突部１３ａ部分において上記第１の側板２ａを横軸部１２ａにより軸支してあり、立ち上がり突部１３ｂ部分において上記第２の側板２ｂを横軸部１２ｂにより軸支してある。
【００１９】
ここで、添付図面に示す実施形態においては、折り畳み時に先に倒す一対の第１の側板２ａは倒した状態で第１の側板２ａ同士が重ならず且つ該第１の側板２ａを底板１に対して略平行に当接又は該第１の側板２ａと底板１とが僅かな小隙間を介して対向するように設定してある。このように構成することで、折り畳んだ状態における折り畳みコンテナ３の嵩を低くすることができるものである。
【００２０】
第１の側板２ａ、第２の側板２ｂにはそれぞれ上部の中央に把持孔３５、３６が設けてある。
【００２１】
第１の側板２ａの両側の外面部には第１の側板２ａの面と直交する方向に突出した嵌め込み突部１４が上下方向に複数個突設してある。
【００２２】
また、第１の側板２ａの上端部にはロック部４が設けてあり、ロック部４は第１の側板２ａの両端面部から外側方に突出している。第１の側板２ａの外面部の上端部には横方向に長い凹所１５が設けてある。第１の側板２ａの凹所１５の両側のリブ１７には凹所１５の上下巾とほぼ同じ長さの孔１８が形成してあり、また、複数個の嵌め込み突部１４のうち上記孔１８に対向する嵌め込み突部１４には上記孔１８に対応して同じ上下長さの孔１９が形成してある。また、リブ１７の突出先端には第１の側板２ａの面に平行に外面片２６が形成してあり、この外面片２６に窓２７が設けてあり、窓２７の側縁と外面片２６の側端縁との間が抜け止め片２８となっている。
【００２３】
ロック部４は図１２乃至図１６に示すようなもので、係止用開口２０を有する連結部２１と、連結部２１に横方向に連設した抜け止め溝２２を有する抜け止め部２３と、抜け止め部２３から側方に連設したロック棒部２４とで構成してある。
【００２４】
また、ロック操作部材１６は横方向に長尺となったもので、両端部に係止突起部２５が設けてあり、長手方向の中央部に指掛用凹部１６ａが形成してある。
【００２５】
そして、ロック部４をロック棒部２４を先にして凹所１５内から両側のリブ１７の孔１８にそれぞれ差し込んで孔１９を貫通してロック部４のロック棒部２４の先端部を第１の側板２ａの外側面から外側方に突出させ、この状態で抜け止め溝２２が抜け止め片２８に嵌め込まれてロック部４は孔１８、１９に沿って上下移動はできるが横方向にずれないようになっている。
【００２６】
上記のようにして第１の側板２ａの上端部両側に外側方に突出させ且つ上下移動自在にロック部４を取付け、この状態で、凹所１５にロック操作部材１６を配置し、ロック操作部材１６の両端部の係止部２０をそれぞれロック部４の係止用開口２０に係止することでロック操作部材１６の両端部にロック部４を連結するものである。
【００２７】
ロック操作部材１６は凹所１５よりも上下巾が狭くて凹所１５内で上下移動自在となっており、このため、ロック操作部材１６を上方方向に移動操作することで両側に連結したロック部４を上下方向に移動することができるようになっている。ここで、ロック部４乃至ロック操作部材１６は上方又は下方のいずれかに向けてばね２９によりばね力を付勢してあり、添付図面に示す実施形態ではロック部４に一体に板状をしたばね２９を形成し、ばね２９の先端を凹所１５の下面に押し当てることでロック部４を上方に弾性的に押し上げている。したがって、ロック部４と連結されたロック操作部材１６も上方に押し上げられている。
【００２８】
第２の側板２ｂの内面の側端部には図７に示すように第２の側板２ｂの内面に対して直交する方向に突部３０が突設してあり、この突部３０は平面視段状をしていて、突出長さの短い短突部３１とこの短突部３１よりも第２の側板２ｂの横方向の外方にずれた位置から突出する突出長さの長い端突部３２とで構成してある。
【００２９】
上記突出長さの短い短突部３１の上部にはロック受け部５が形成してあり、ロック受け部５には突出先端面に上下に開口する突出先端開口部９を有し且つ第２の側板２ｂの内面に沿った方向において上部又は下部（添付図面に示す実施形態では下部）に出し入れ用開口部１０を有する縦断面略Ｌ状をしたＬ状溝部１１が設けてある。Ｌ状溝部１１の出し入れ用開口部１０よりも上部の溝は被ロック部３８となっている。この被ロック部３８となる溝の外側壁の外面は傾斜した傾斜導入面３９となっている。この傾斜導入面３９は第２の側板２ｂを先に起立させた状態で第１の側板２ａを回動した際にばね２９で押し上げられた状態のロック部４の回動軌跡上に位置している。
【００３０】
突出長さの長い端突部３２には上下方向に複数個の嵌め込み孔部３４が形成してある。
【００３１】
前述のように折り畳みコンテナ３は重量を軽くし且つ合成樹脂材料の使用量を削減したり、あるいは箱状に組み立てた状態における通気性を確保したりするために底板１、一対の第１の側板２ａ、一対の第２の側板２ｂには略全面にわたって多数の孔６が形成してあるが、ここで本発明においては、第２の側板２ｂが起立した状態で第１の側板２ａを回動する際にロック部４の先端が描く回動軌跡に対応する第２の側板２ｂの内面部にロック部４の先端が摺接移動可能な摺接案内面７を形成してある。
【００３２】
上記のような構成の折り畳みコンテナ３において、折り畳みコンテナ３を箱状に組み立てるに当たっては、第２の側板２ｂの把持孔３６に指先を入れて第２の側板２ｂの上端部を掴んで第２の側板２ｂを回動させて起立させる。次に、第１の側板２ａの把持孔３５に指を入れて第１の側板２ａの上端部を掴んで第１の側板２ａを回動して起立させる。このように第１の側板２ａを回動して起立させるとばね２９で押し上げられた状態のロック部４のロック棒部２４がロック受け部５の傾斜導入面３９に当たるので、この状態で更に第１の側板２ａを回動する力を与えるとロック棒部２４が傾斜導入面３９に沿って下降し、傾斜導入面３９の下方の出し入れ用開口部１０からＬ状溝部１１内に入り、ロック棒部２４がＬ状溝部１１内に入るとばね２９のばね力により上方に押し上げられてＬ状溝部１１内の上部の被ロック部３８に嵌め込まれてロック状態となり、第１の側板２ａが回動できず、起立状態が保持される。この第１の側板２ａを起立させた状態では、更に、第１の側板２ａの両側の外面部に設けた複数の嵌め込み突部１４がそれぞれ、第２の側板２ｂの端突部３２に設けた複数の嵌め込み孔部３４に嵌め込まれ、これにより第２の側板２ａが回動できず、起立状態が保持される。
【００３３】
このようにして折り畳みコンテナ３を図１乃至図３に示すように箱状に組み立てるものである。
【００３４】
一方、箱状に組み立てた折り畳みコンテナ３を折り畳むに当たっては、第１の側板２ａに上下移動自在に取付けたロック操作部材１６の指掛用凹部１６ａに指を掛けてばね２９に抗してロック操作部材１６を下方に下げることでロック部４を下げてロック棒部２４をＬ状溝部１１の下部に位置させて非ロック状態とし、この状態のまま第１の側板２ａの上端部を掴んでを回動させることで、ロック棒部２４が出し入れ用開口部１０から出て第１の側板２ａを回動させることができるものであり、このようにして一対の第１の側板２ａを底板１の上面に重ねるように倒す。次に、一対の第２の側板２ｂの上端部を掴んで回動することで先に倒している一対の第１の側板２ａの上に一対の第２の側板２ｂを重ね、図４乃至図６に示すように折り畳みコンテナ３をコンパクトな状態に折り畳むものである。
【００３５】
ところで、上記のようにして折り畳みコンテナ３の組み立て時、第１の側板２ａを回動する際第２の側板２ｂが垂直姿勢で起立している場合にはロック部４のロック棒部２４の先端は第２の側板２ｂの内面部に当たらないようにあらかじめロック棒部２４の先端の突出位置が設定してあるが、第１の側板２ａを回動する際に先に起立させている第２の側板２ｂが垂直姿勢でなく、内側に傾く場合があったり、あるいは折り畳み時、第１の側板２ａを回動する際に起立させている第２の側板２ｂが垂直姿勢でなく、内側に傾く場合があり、このような場合にはロック部４のロック棒部２４の先端が第２の側板２ｂの内面に当たることになる。そして、第２の側板２ｂには前述のように軽量化、材料節減、通気等の目的で多数の孔６が形成してあるので、ロック棒部２４の先端が孔６に引っ掛かって第１の側板２ａを回動できなくなるおそれがある。そこで、本発明においては、図１、図２、図４、図７、図９、図１１に示すように多数の孔６を形成した第２の側板２ｂに摺接案内面７を形成してある。この摺接案内面７は、第２の側板２ｂが起立した状態で第１の側板２ａを回動する際にロック部４の先端が描く回動軌跡に対応する第２の側板２ｂの内面部に形成されるものであり、多数の孔６を有する第２の側板２ｂの内面部の両側に円弧状をしたロック棒部２４の先端が摺接しても引っ掛からない円弧状領域７ａを形成し、この円弧状領域が摺接案内面７となっている。上記円弧状領域７ａは添付図面においては円弧状をした一点鎖線イ、ロで挟まれた領域である。ここで、一点鎖線イはロック部４を上方に移動させた上限位置におけるロック部４先端（ロック棒部２４の先端）の上端の描く回動軌跡を示し、一点鎖線ロはロック部４を下方に移動させた下限位置におけるロック部４先端（ロック棒部２４の先端）の下端の描く動軌跡を示している。
【００３６】
この摺接案内面７は円弧状領域７ａの全面が孔６のない非孔あき面であってもよく、円弧状領域７ａ内に孔６があるとしてもロック棒部２４の先端が引っ掛からない程度の小さな孔６（つまりロック棒部２４の先端部よりも小さな孔）や、ロック棒部２４の先端部よりも横巾が狭い縦長の孔６があるものでもよく、あるいは、円弧状領域７ａに隣接して位置するロック棒部２４の先端部よりも大きな孔６の一部が円弧状領域７ａ内にかかっている場合において該孔６の円弧状領域７ａにかかった部分がロック棒部２４の先端部よりも小さいものであってもよく、いずれの場合においても、第１の側板２ａのロック棒部２４が回動する際に第２の側板２ｂの内面部の上記摺動案内面７となっている円弧状領域７ａにロック棒部２４の先端部が当たっても摺動案内面７に沿ってガイドされながら支障なく回動できるものであり、これにより第１の側板２ａの回動の際に第２の側板２ｂが少し内側に傾いた状態で起立していてロック棒部２４の先端が多数の孔６を有する第２の側板２ｂに当たったとしてもスムーズに第１の側板２ａを回動することができるものである。
【００３７】
上記した実施形態においては、ロック部４にばね２９により上方に押し上げるばね力を付与し、ロック受け部５に突出先端面に上下に開口する突出先端開口部９を有し且つ第２の側板２ｂの内面に沿った方向において下部に出し入れ用開口部１０を有する縦断面略Ｌ状をしたＬ状溝部１１が設けた例を示したが、上記実施形態とは逆にロック部４にばね２９により下方に押し上げるばね力を付与し、ロック受け部５に突出先端面に上下に開口する突出先端開口部９を有し且つ第２の側板２ｂの内面に沿った方向において上部に出し入れ用開口部１０を有する縦断面略Ｌ状をしたＬ状溝部１１が設けてもよいものであり、この場合にはＬ状溝部１１の出し入れ用開口部１０の下部に被ロック部３８が設けられることになり、この被ロック部３８の外側壁の外面は傾斜した傾斜導入面３９が形成されるものである。
【００３８】
なお、添付図面に示す実施形態では折り畳みコンテナ３の軽量化、材料節減、通気の目的で底板１、第１の側板２ａ、第２の側板２ｂにいずれも多数の孔６を形成した例で説明したが、本発明においては少なくとも第２の側板２ｂに多数の孔６を形成するものであればよく、第１の側板２ａ、第２の側板２ｂに多数の孔６を形成し且つ底板１に孔６を形成しないもの、あるいは第２の側板２ｂ、底板１に多数の孔６を形成し且つ第１の側板２ａに孔６を形成しないもの、あるいは第２の側板２ｂにのみ孔６を形成し且つ底板１及び第１の側板２ａに孔６を形成しないものであってもよいものである。
【００３９】
また、添付図面に示す実施形態においては一対の第２の側板２ｂの内面部の対向部分に内方及び上方に向けて開口する収納物取り出し用凹所４０を設けてあって、折り畳みコンテナ３内に収納した収納物を取り出す際にこの収納物取り出し用凹所４０に指を入れて収納物を容易に取り出すことができるようにしてある。そして添付図面に示す実施形態では収納物取り出し用凹所４０部分に円弧状領域７ａの一部がかかっているが、この収納物取り出し用凹所４０の円弧状領域７ａがかかった部位においてもロック棒部２４の先端が回動時に摺接しても引っ掛からないように円弧状領域７ａ部分は孔６がない面部分となっている。なお、収納物取り出し用凹所４０の内面部の端縁部（両側端部、下端縁部）は傾斜面４０ａとなっていて、ロック棒部２４が引っ掛からないようになっている。
【００４０】
【発明の効果】
本発明の請求項１記載の発明にあっては、上述のように、第１の側板に側端部から外側方に突出するロック部を設け、第２の側板に起立状態で第１の側板に設けたロック部がはめ込まれるロック受け部を設け、少なくとも第２の側板に多数の孔を形成すると共に、第２の側板が起立して内側にやや傾いた状態で第１の側板を回動する際に該第１の側板の側端部から外側方に突出するロック部の先端が描く回動軌跡に対応する第２の側板の内面部をロック部の先端が摺接移動可能な摺接案内面としてあるので、第１の側板を回動する際に、先に起立させている多数の孔を形成した第２の側板が垂直姿勢でなく、少しでも内側に傾くような姿勢となっていても、第１の側板の側端部から外側方に突出するロック部の先端が第２の側板の内面に当たったとしてもロック部の先端が摺接案内面をガイドとして移動できて孔に引っ掛かることなくスムーズに回動でき、少なくとも第２の側板に多数の孔を形成して軽量化、材料節減、通気等を図るようにした折り畳みコンテナにおいて、組み立て、折り畳みが容易に行えるものであり、しかも、ロック部を第１の側板の側端部から突出させてあるので、第１の側板を起立させてロックするに当たって、ロック部を突出させる操作を必要とせず、操作が容易となるものである。
【００４１】
また、請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、第１の側板の側端部から外側方に突出したロック部を上下移動自在に設け、第２の側板の内面の側端部にロック受け部を突設し、このロック受け部に突出先端面に上下に開口する突出先端開口部を有し且つ第２の側板の内面に沿った方向において上部又は下部に出し入れ用開口部を有する縦断面略Ｌ状をしたＬ状溝部を形成し、第２の側板が起立した状態で第１の側板のロック部をＬ状溝部の出し入れ用開口部から出し入れ自在とし、ロック部がＬ状溝部内に位置した状態でロック部が出し入れ用開口部に対向する位置に位置した状態がロック解除状態、出し入れ用開口部に対向しない位置に位置している状態がロック状態となるように設定したので、ロック部のロック受け部へのロック、ロック解除がいずれもロック部の上下方向の移動により行えるものであり、これにより、第１の側板を回動して起立させたり倒したりするために第１の側板の上端部を手で掴んだまま、指を上下方向に移動させることでロック部を上下方向に移動する動作ができるものであって、簡単な操作で第１の側板の上端部を手で掴んで行う回動操作に連続してロック操作ができると共に、第１の側板の上端部を手で掴んだ状態でロック部を上下方向に移動させてロックを解除させて第１の側板の上端部を手で掴んだまま第そのまま第１の側板を倒す動作を行うことができるものである。
【図面の簡単な説明】
【図１】本発明の折り畳みコンテナの斜視図である。
【図２】同上の折り畳みコンテナを箱状に組み立てた状態の正面図である。
【図３】同上の折り畳みコンテナの箱状に組み立てた状態の側面図である。
【図４】同上の折り畳みコンテナを折り畳んだ状態の平面図である。
【図５】同上の折り畳みコンテナの折り畳んだ状態の側面図である。
【図６】同上の折り畳みコンテナの折り畳んだ状態の断面図である。
【図７】同上の折り畳みコンテナにおいて第１の側板を回動している状態を示す斜視図である。
【図８】同上の折り畳みコンテナの第１の側板の要部斜視図である。
【図９】同上の折り畳みコンテナにおいて第１の側板の回動を示す説明図である。
【図１０】同上の折り畳みコンテナにおいて第２の側板の回動を示す説明図である。
【図１１】同上の折り畳みコンテナの第２の側板を示し、（ａ）は正面図であり、（ｂ）は背面図である。
【図１２】同上のロック部が被ロック部にはめ込まれている状態の断面図である。
【図１３】同上のロック部が出し入れ用開口部に対向している状態の断面図である。
【図１４】同上のロック操作部材の両側にロック部を連結した状態の正面図である。
【図１５】同上のロック操作部材を示し、（ａ）は正面図であり、（ｂ）は断面図である。
【図１６】同上のロック部を示し、（ａ）は正面図であり、（ｂ）は断面図である。
【符号の説明】
１底板
２ａ第１の側板
２ｂ第２の側板
３折り畳みコンテナ
４ロック部
５ロック受け部
６孔
７摺接案内面
９突出先端開口部
１０出し入れ用開口部
１１Ｌ状溝部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding container, and more particularly to a folding container without a lip frame.
[0002]
[Prior art]
Conventionally, a pair of first side plates rotatably attached to a pair of opposing sides of a rectangular bottom plate, and a pair of second side plates rotatably attached to another pair of opposing sides Are folded in a state where the pair of first side plates are folded down and the pair of second side plates are folded down, and the pair of second side plates are raised, and then the pair of first side plates are raised to form a box shape. Folding containers without a mouth frame to assemble are known.
[0003]
In such a folding container, the bottom plate, the first side plate, the second plate are used in order to reduce the weight and reduce the amount of the synthetic resin material used or to ensure the air permeability in the assembled state in a box shape. A large number of holes are formed in the side plate.
[0004]
Further, in the conventional folding container, a lock portion is provided on the first side plate so as to be movable in the lateral direction, and when the first side plate is rotated, the lock portion is retracted into the first side plate. The side end of the first side plate is moved to oppose the side end of the inner surface of the second side plate, and the lock portion is protruded laterally in this state. The second side plate that has been erected first is fitted into the lock groove and locked.
[0005]
However, in such a conventional example, when the first side plate is rotated, the lock portion is drawn into the first side plate and rotated, but the lock portion is mistakenly moved to the first side plate. When the second side plate that is raised from the second side plate that has been erected is formed with a number of holes in the second side plate that is erected as described above, the second side plate that is erected first is not in a vertical posture, If the posture is inclined inward, there is a problem that the tip of the lock portion is caught in the hole and cannot be rotated smoothly. Further, in the above conventional example, after the first side plate is turned and raised, an operation for projecting the lock portion outward from the side end portion of the first side plate is required for locking. The operation is troublesome.
[0006]
Therefore, in the course of reaching the present invention, the inventor of the present invention is such that when the first side plate is rotated, the lock portion is rotated outwardly from the first side plate. Thought. If this is the case, an operation to protrude the lock part outward after standing is not required, but when the lock part is protruded outward from the first side plate in this way, Since a number of holes are formed in the second side plate that stands up earlier as described above, the second side plate that stands up first is not in a vertical posture but in a posture that tilts slightly inward. In this case, the tip of the lock portion is caught in the hole and cannot be rotated smoothly, and it has been found that it is difficult to assemble and fold.
[0007]
[Problems to be solved by the invention]
The present invention has been invented in view of the above-described problems, and the lock portion is not caught on the second side plate provided with a number of holes that are first raised when rotating the first side plate. Providing a folding container that can be smoothly rotated and that does not require an operation of projecting the lock portion from the first side plate when the first side plate is rotated to lock the lock portion, and that facilitates assembly work. It is an object to do.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a folding container according to the present invention includes a pair of first side plates 2a rotatably attached to a pair of opposing sides of a rectangular bottom plate 1, and a pair of opposing sides. The pair of second side plates 2b that are movably attached are folded in a state where the pair of second side plates 2b is folded on the pair of first side plates 2a, and the pair of second side plates 2b is raised. A pair of first side plates 2a is raised and assembled into a box shape, and the first side plate 2a is provided with a lock portion 4 projecting outward from the side end portion, and the second side plate 2b is provided with a lock receiving portion 5 into which the lock portion 4 provided on the first side plate 2a is fitted, and at least the second side plate 2b is formed with a plurality of holes 6 and the second side plate 2b is raised. The first side plate 2a is rotated while being slightly inclined inward. When that Projecting outward from the side edge of the first side plate 2a The inner surface portion of the second side plate 2b corresponding to the turning trajectory drawn by the tip of the lock portion 4 is formed as a slidable contact guide surface 7 in which the tip of the lock portion 4 is slidably movable. By adopting such a configuration, when the first side plate 2a is rotated, the second side plate 2b in which the many holes 6 that have been erected first are tilted inward rather than in a vertical posture. Become posture Projects outward from the side edge of the first side plate 2a. Even if the tip of the lock portion 4 hits the inner surface of the second side plate 2b, the tip of the lock portion 4 can move using the sliding contact guide surface 7 as a guide and can smoothly rotate without being caught in the hole 6. Become. Further, when the first side plate 2a is rotated to lock the lock portion 4, an operation for projecting the lock portion 4 from the first side plate 2a is not required, and the assembling work is facilitated.
[0009]
Further, a lock portion 4 protruding outward from the side end portion of the first side plate 2a is provided to be movable up and down, and a lock receiving portion 5 is provided to protrude from the side end portion of the inner surface of the second side plate 2b. The receiving portion 5 has a protruding tip opening 9 that opens up and down on the protruding tip surface, and has a substantially L-shaped longitudinal section having an opening / removal opening 10 in the upper or lower part in the direction along the inner surface of the second side plate 2b. The L-shaped groove portion 11 is formed, and the lock portion 4 of the first side plate 2a can be inserted and removed freely from the opening / removal opening 10 of the L-shaped groove portion 11 in a state where the second side plate 2b stands up. A state where the lock portion 4 is positioned in the groove 11 and facing the opening 10 is in an unlocked state, and a state where the lock portion 4 is not facing the opening 10 is in a locked state. It is preferable to set so. With such a configuration, the lock portion 4 can be locked and unlocked by the movement of the lock portion 4 in the vertical direction, whereby the first side plate 2a is rotated. It is possible to move the lock portion 4 in the vertical direction by moving the finger in the vertical direction while holding the upper end portion of the first side plate 2a with the hand in order to move it up and down. In addition, the locking operation can be performed continuously with the rotation operation performed by grasping the upper end portion of the first side plate 2a with a simple operation and the upper end portion of the first side plate 2a is grasped with the hand. 4 can be moved up and down to release the lock, and the first side plate 2a can be moved down while holding the upper end of the first side plate 2a by hand.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0011]
As shown in FIGS. 1 to 6, the folding container 3 according to the present invention has a pair of first side plates 2a rotatably attached to a pair of opposing sides of a rectangular bottom plate 1 made of synthetic resin. A pair of second side plates 2b is pivotally attached to the other pair of sides, and the pair of first side plates 2a is folded and the pair of second side plates 2b is folded and paired. After the second side plate 2b is erected, the pair of first side plates 2a is erected and assembled into a box shape.
[0012]
The folding container 3 has a bottom plate 1, a pair of first side plates 2 a, a pair of pairs in order to reduce the weight and reduce the amount of synthetic resin material used or to ensure air permeability when assembled in a box shape. A number of holes 6 are formed in the second side plate 2b over substantially the entire surface.
[0013]
The folding container 3 has a rectangular shape when the bottom plate 1 is folded and becomes a rectangular shape in plan view when folded and a rectangular box when viewed from the bottom when assembled into a box shape, and the folding plate 3 is folded when the bottom plate 1 has a square shape. There is a type that becomes a square in a plan view and a square box in a plan view when assembled in a box shape, and in the present invention, any type of folding container may be used. The drawing shows an embodiment in which the bottom plate 1 is rectangular. Hereinafter, a case where the bottom plate 1 is rectangular will be described as an example. In the following description, the first side plate 2a is described as a short side plate, and the second side plate 2b is described as a long side plate. Of course, in the present invention, the first side plate 2a may be a long side plate, and the second side plate 2b may be a short side plate.
[0014]
A side plate on the short side, which is the first side plate 2a, is pivotally attached to the opposite short side of the rectangular bottom plate 1 made of synthetic resin. A side plate on the long side which is the second side plate 2b is rotatably attached to the side.
[0015]
As shown in FIG. 6, the first side plate 2 a that is the side plate on the short side has a vertical length that is ½ or less of the length on the long side of the bottom plate 1, and rotates. When folded, the paired first side plates 2a do not overlap each other. Further, in the embodiment of the accompanying drawings, the second side plate 2b, which is a long side plate, has a length in the vertical direction that is ½ or less of the short side length of the bottom plate 1 as shown in FIG. In this case, when the second side plate 2b is turned and folded, the paired second side plates 2b do not overlap each other.
[0016]
As shown in FIGS. 9 and 10, the first side plate 2a and the second side plate 2b are both rotatably attached to the bottom plate 1 by horizontal shaft portions 12a and 12b.
[0017]
Here, the height position of each pivotal support part to the bottom plate 1 of the paired first side plate 2a (the height position of the horizontal shaft portions 12a, 12a) is the same height position. Moreover, the height position (height position of the horizontal-axis parts 12b and 12b) of each pivot part to the baseplate 1 of the 2nd side plate 2b used as a pair is the same height position. Then, the pivot position of the first side plate 2a to the bottom plate 1 (the height position of the horizontal shaft portions 12a and 12b) and the height position of the pivot portion of the second side plate 2b to the bottom plate 1 (the horizontal shaft portion 12a). The height position of the second side plate 2b is made higher than the height position of the first side plate 2a than the height position of the first side plate 2a. In folding, the first side plate 2a is first folded on the bottom plate 1, and then the second side plate 2b is folded later to form a pair of second side plates 2b on the pair of first side plates 2a. Are supposed to be stacked.
[0018]
In the embodiment shown in the accompanying drawings, one pair of opposing sides of the upper surface of the bottom plate 1 is provided with a rising protrusion 13a, and the other pair of opposing sides is provided with a rising protrusion 13b. The rising protrusion 13b is higher than the rising protrusion 13a. The first side plate 2a is pivotally supported by the horizontal shaft portion 12a at the rising protrusion 13a, and the second side plate 2b is pivotally supported by the horizontal shaft portion 12b at the rising protrusion 13b.
[0019]
Here, in the embodiment shown in the attached drawings, the pair of first side plates 2a that are tilted first when folded are in a state where the first side plates 2a do not overlap with each other and the first side plates 2a are placed on the bottom plate 1. The first side plate 2a and the bottom plate 1 are set so as to contact each other substantially in parallel with each other with a small gap therebetween. By comprising in this way, the volume of the folding container 3 in the folded state can be made low.
[0020]
The first side plate 2a and the second side plate 2b are respectively provided with gripping holes 35 and 36 in the center of the upper part.
[0021]
A plurality of fitting protrusions 14 projecting in a direction perpendicular to the surface of the first side plate 2a project in the vertical direction on the outer surface portions on both sides of the first side plate 2a.
[0022]
Moreover, the lock part 4 is provided in the upper end part of the 1st side plate 2a, and the lock part 4 protrudes outward from the both end surface parts of the 1st side plate 2a. A laterally long recess 15 is provided at the upper end of the outer surface of the first side plate 2a. The ribs 17 on both sides of the recess 15 of the first side plate 2 a are formed with holes 18 having a length substantially the same as the vertical width of the recess 15, and the holes 18 among the plurality of fitting protrusions 14. In the fitting protrusion 14 facing the hole 18, a hole 19 having the same vertical length is formed corresponding to the hole 18. An outer surface piece 26 is formed at the projecting tip of the rib 17 in parallel with the surface of the first side plate 2 a, and a window 27 is provided on the outer surface piece 26. A retaining piece 28 is provided between the side edges.
[0023]
The lock portion 4 is as shown in FIGS. 12 to 16, and includes a connecting portion 21 having a locking opening 20, a retaining portion 23 having a retaining groove 22 continuously provided in the connecting portion 21 in the lateral direction, The lock rod portion 24 is provided side by side from the retaining portion 23.
[0024]
The lock operation member 16 is elongated in the lateral direction, and is provided with locking projections 25 at both ends and a finger hooking recess 16a at the center in the longitudinal direction.
[0025]
Then, the lock portion 4 is inserted into the holes 18 of the ribs 17 on both sides from the inside of the recess 15 with the lock rod portion 24 first, and passes through the holes 19 so that the tip end portion of the lock rod portion 24 of the lock portion 4 is the first. In this state, the retaining groove 22 is fitted into the retaining piece 28 so that the lock portion 4 can move up and down along the holes 18 and 19 but does not shift laterally. It is like that.
[0026]
As described above, the lock portion 4 is attached to both sides of the upper end portion of the first side plate 2a so as to protrude outward and move up and down. In this state, the lock operation member 16 is disposed in the recess 15, and the lock operation member is arranged. The lock portions 4 at both ends of the lock 16 are locked to the lock openings 4 of the lock portion 4 to connect the lock portions 4 to both ends of the lock operation member 16.
[0027]
The lock operation member 16 has a narrower vertical width than the recess 15 and can be moved up and down in the recess 15. For this reason, the lock operation member 16 is operated to move the lock operation member 16 in the upward direction so as to be connected to both sides. 4 can be moved up and down. Here, the lock portion 4 to the lock operation member 16 are urged by a spring 29 toward the upper side or the lower side, and in the embodiment shown in the accompanying drawings, the lock portion 4 is integrally formed in a plate shape. The spring 29 is formed, and the lock portion 4 is elastically pushed upward by pressing the tip of the spring 29 against the lower surface of the recess 15. Therefore, the lock operation member 16 connected to the lock portion 4 is also pushed upward.
[0028]
As shown in FIG. 7, a protrusion 30 is provided at a side end portion of the inner surface of the second side plate 2b in a direction orthogonal to the inner surface of the second side plate 2b. A short protrusion 31 with a short protrusion length and an end protrusion with a long protrusion length that protrudes from the laterally shifted position of the second side plate 2b with respect to the short protrusion 31. 32.
[0029]
A lock receiving portion 5 is formed on an upper portion of the short protruding portion 31 having a short protruding length, and the lock receiving portion 5 has a protruding tip opening portion 9 that opens up and down on the protruding tip surface, and a second one. In the direction along the inner surface of the side plate 2b, there is provided an L-shaped groove portion 11 having an approximately L-shaped longitudinal section having an opening / removal portion 10 at the upper or lower portion (lower portion in the embodiment shown in the accompanying drawings). The upper groove of the L-shaped groove 11 than the opening / removal opening 10 is a locked portion 38. The outer surface of the outer wall of the groove serving as the locked portion 38 is an inclined introduction surface 39 that is inclined. The inclined introduction surface 39 is positioned on the rotation locus of the lock portion 4 that is pushed up by the spring 29 when the first side plate 2a is rotated with the second side plate 2b raised up first. Yes.
[0030]
A plurality of fitting holes 34 are formed in the end protrusion 32 having a long protrusion length in the vertical direction.
[0031]
As described above, the folding container 3 has a bottom plate 1 and a pair of first side plates in order to reduce the weight and reduce the amount of synthetic resin material used or to ensure air permeability when assembled in a box shape. 2a, a pair of second side plates 2b are formed with a large number of holes 6 over substantially the entire surface. In the present invention, the first side plate 2a is turned with the second side plate 2b standing up. In this case, a sliding contact guide surface 7 is formed on the inner surface of the second side plate 2b corresponding to the turning trajectory drawn by the distal end of the locking portion 4 so that the distal end of the locking portion 4 can slide.
[0032]
In the folding container 3 configured as described above, when the folding container 3 is assembled into a box shape, a fingertip is inserted into the holding hole 36 of the second side plate 2b and the upper end portion of the second side plate 2b is gripped. The side plate 2b is rotated to stand. Next, a finger is put into the holding hole 35 of the first side plate 2a, the upper end portion of the first side plate 2a is gripped, and the first side plate 2a is rotated to stand. Thus, when the first side plate 2a is rotated and stood up, the lock rod portion 24 of the lock portion 4 pushed up by the spring 29 comes into contact with the inclined introduction surface 39 of the lock receiving portion 5. When a force for rotating the one side plate 2a is applied, the lock rod portion 24 descends along the inclined introduction surface 39 and enters the L-shaped groove portion 11 through the opening / closing opening 10 below the inclined introduction surface 39. When the portion 24 enters the L-shaped groove 11, it is pushed upward by the spring force of the spring 29 and is fitted into the upper locked portion 38 in the L-shaped groove 11 to be locked, and the first side plate 2 a rotates. It cannot be done and the standing state is maintained. In the state where the first side plate 2a is erected, a plurality of fitting projections 14 provided on the outer surface portions on both sides of the first side plate 2a are further provided on the end projections 32 of the second side plate 2b. The second side plate 2a cannot be rotated by being fitted into the plurality of fitting holes 34, and the standing state is maintained.
[0033]
In this way, the folding container 3 is assembled in a box shape as shown in FIGS.
[0034]
On the other hand, when folding the folding container 3 assembled in a box shape, a lock operation is performed against the spring 29 by placing a finger on the finger-engaging recess 16a of the lock operation member 16 attached to the first side plate 2a so as to be movable up and down. By lowering the member 16 downward, the lock portion 4 is lowered and the lock rod portion 24 is positioned at the lower portion of the L-shaped groove portion 11 so as to be in an unlocked state, and in this state, the upper end portion of the first side plate 2a is grasped. By rotating, the lock bar portion 24 can come out of the opening / removal opening 10 and the first side plate 2a can be rotated. In this way, the pair of first side plates 2a is connected to the bottom plate 1. Defeat it so that it overlaps the top surface. Next, the pair of second side plates 2b is stacked on the pair of first side plates 2a that have been tilted first by grasping and rotating the upper ends of the pair of second side plates 2b, and FIGS. As shown in FIG. 6, the folding container 3 is folded into a compact state.
[0035]
By the way, when assembling the folding container 3 as described above, when the second side plate 2b stands upright when the first side plate 2a is rotated, the tip of the lock rod portion 24 of the lock portion 4 Is set in advance so that it does not hit the inner surface portion of the second side plate 2b, but the second side plate 2a is raised first when the first side plate 2a is rotated. The side plate 2b of the first side plate 2b may not be in a vertical posture but may be inclined inward, or when folded, the second side plate 2b that is raised when the first side plate 2a is rotated is not in a vertical posture but is inclined inward. In such a case, the leading end of the lock rod portion 24 of the lock portion 4 hits the inner surface of the second side plate 2b. Since the second side plate 2b is formed with a number of holes 6 for the purpose of weight reduction, material saving, ventilation, etc. as described above, the tip of the lock rod portion 24 is caught in the hole 6 and the first side plate 2b There is a possibility that the side plate 2a cannot be rotated. Therefore, in the present invention, as shown in FIGS. 1, 2, 4, 7, 9, and 11, the sliding contact guide surface 7 is formed on the second side plate 2b in which a large number of holes 6 are formed. is there. This sliding contact guide surface 7 is an inner surface portion of the second side plate 2b corresponding to a turning locus drawn by the tip of the lock portion 4 when the first side plate 2a is turned with the second side plate 2b standing. Forming an arcuate region 7a that does not catch even if the tip of the arcuate lock bar 24 slides on both sides of the inner surface of the second side plate 2b having a large number of holes 6; This arcuate region is the sliding contact guide surface 7. The arc-shaped region 7a is a region sandwiched by arc-shaped alternate long and short dash lines A and B in the accompanying drawings. Here, the alternate long and short dash line A indicates a turning trajectory drawn by the upper end of the lock portion 4 (the distal end of the lock rod portion 24) at the upper limit position where the lock portion 4 is moved upward, and the alternate long and short dash line B indicates the lock portion 4 downward. The movement locus drawn by the lower end of the tip of the lock portion 4 (the tip of the lock rod portion 24) at the lower limit position moved to is shown.
[0036]
The sliding contact guide surface 7 may be a non-perforated surface without the hole 6 in the entire arcuate region 7a, and even if the hole 6 is in the arcuate region 7a, the tip of the lock rod portion 24 is not caught. May have a small hole 6 (that is, a hole smaller than the tip end of the lock rod portion 24), a vertically long hole 6 having a narrower width than the tip end portion of the lock rod portion 24, or in the arc-shaped region 7a. When a part of the hole 6 larger than the tip of the adjacent lock rod portion 24 is in the arcuate region 7a, the portion of the hole 6 that is in the arcuate region 7a is the lock rod portion 24. It may be smaller than the tip portion, and in any case, when the lock bar portion 24 of the first side plate 2a rotates, the sliding guide surface 7 on the inner surface portion of the second side plate 2b The tip of the lock rod 24 is in contact with the circular arc region 7a. Even if the first side plate 2a is rotated, the second side plate 2b is tilted slightly inward when the first side plate 2a is rotated. Even if the tip of the lock rod portion 24 hits the second side plate 2b having a large number of holes 6, the first side plate 2a can be smoothly rotated.
[0037]
In the above-described embodiment, the lock portion 4 is given a spring force that is pushed upward by the spring 29, the lock receiving portion 5 has the protruding tip opening 9 that opens up and down on the protruding tip surface, and the second side plate 2b. Although an example in which the L-shaped groove portion 11 having a substantially L-shaped longitudinal section having the opening / removal opening 10 in the lower portion in the direction along the inner surface of the lock portion 4 is provided is shown in FIG. A spring force that pushes downward is applied, the lock receiving portion 5 has a protruding tip opening 9 that opens up and down on the protruding tip surface, and an opening 10 for taking in and out at the top in the direction along the inner surface of the second side plate 2b. The L-shaped groove portion 11 having a substantially L-shaped longitudinal section may be provided, and in this case, the locked portion 38 is provided below the opening / removal opening 10 of the L-shaped groove portion 11. This locked portion 38 The outer surface of the outer wall are those inclined guide surface 39 which is inclined is formed.
[0038]
In the embodiment shown in the accompanying drawings, an example in which a large number of holes 6 are formed in the bottom plate 1, the first side plate 2 a, and the second side plate 2 b for the purpose of reducing the weight of the folding container 3, saving material, and venting. However, in the present invention, it is sufficient that at least the second side plate 2b is formed with a large number of holes 6, and the first side plate 2a and the second side plate 2b are formed with a large number of holes 6 and the bottom plate 1 is formed. No holes 6 are formed, or the second side plate 2b and the bottom plate 1 are formed with many holes 6, and the first side plate 2a is not formed with holes 6, or the holes 6 are formed only on the second side plate 2b. In addition, the hole 6 may not be formed in the bottom plate 1 and the first side plate 2a.
[0039]
Further, in the embodiment shown in the accompanying drawings, a recessed portion 40 for taking out stored items that opens inwardly and upwardly is provided in an opposing portion of the inner surface portion of the pair of second side plates 2b, and the inside of the folding container 3 is provided. When the stored item stored in the container is taken out, the stored item can be easily taken out by putting a finger in the stored item take-out recess 40. In the embodiment shown in the attached drawings, a part of the arc-shaped region 7a is applied to the recessed portion 40 for taking out the stored item. However, the portion taken up by the arc-shaped region 7a of the stored item extracting recess 40 is also locked. The arcuate region 7a portion is a surface portion without the hole 6 so that the rod portion 24 is not caught even if the tip of the rod portion 24 is slidably contacted during rotation. In addition, the edge part (both side edge part, lower end edge part) of the inner surface part of the recessed part 40 for taking out stored goods becomes the inclined surface 40a, and the lock rod part 24 is not caught.
[0040]
【The invention's effect】
In the first aspect of the present invention, as described above, the first side plate is provided with the lock portion that protrudes outward from the side end portion, and the second side plate is in the upright state. A lock receiving part is provided in which the lock part provided in is fitted, and at least the second side plate is formed with a plurality of holes, and the first side plate is rotated with the second side plate standing and slightly inclined inward. When Projecting outward from the side edge of the first side plate Since the inner surface portion of the second side plate corresponding to the rotation trajectory drawn by the tip of the lock portion is used as a sliding contact surface that allows the tip of the lock portion to slide, the first side plate can be turned when the first side plate is turned. Even if the second side plate formed with a large number of holes standing upright is not in a vertical posture but is inclined to the inside as much as possible, Projects outward from the side edge of the first side plate Even if the front end of the lock portion hits the inner surface of the second side plate, the front end of the lock portion can move using the sliding contact guide surface as a guide and can smoothly rotate without being caught in the hole. In a folding container with holes to reduce weight, material saving, ventilation, etc., it can be easily assembled and folded, and the lock part protrudes from the side end of the first side plate. Therefore, when the first side plate is raised and locked, an operation for projecting the lock portion is not required, and the operation is facilitated.
[0041]
In addition to the effect of the invention of the first aspect, the invention described in claim 2 is provided with a lock portion protruding outward from the side end portion of the first side plate so as to be movable up and down. In the direction along the inner surface of the second side plate, a lock receiving portion projects from the side end portion of the inner surface of the second side plate, and the lock receiving portion has a protruding tip opening portion that opens up and down on the protruding tip surface. An L-shaped groove portion having a substantially L-shaped longitudinal section having an opening / removal opening in the upper part or the lower part is formed, and the lock part of the first side plate is lifted from the opening / removal opening of the L-shaped groove part with the second side plate standing A state where the lock part is located in the L-shaped groove and the lock part is located at a position facing the entry / exit opening is in an unlocked state and a position not opposed to the entry / exit opening. Is set to be locked, so lock The lock receiving portion can be locked and unlocked by moving the lock portion in the vertical direction, so that the first side plate can be turned upright to turn the first side plate up and down. The upper part of the first side plate can be moved up and down by moving the finger up and down while holding the upper part of the hand. The lock operation can be performed in succession to the pivoting operation performed in step 1, and the upper end portion of the first side plate is released by moving the lock portion in the vertical direction while grasping the upper end portion of the first side plate by hand. The first side plate can be moved down as it is with the hand held in hand.
[Brief description of the drawings]
FIG. 1 is a perspective view of a folding container according to the present invention.
FIG. 2 is a front view showing a state in which the same folding container is assembled in a box shape.
FIG. 3 is a side view showing a state in which the folding container is assembled in a box shape.
FIG. 4 is a plan view showing a state in which the folding container is folded.
FIG. 5 is a side view showing a folded state of the folding container according to the embodiment.
FIG. 6 is a cross-sectional view of the folded container of the above in a folded state.
FIG. 7 is a perspective view showing a state in which the first side plate is rotated in the folding container same as above.
FIG. 8 is a perspective view of the main part of the first side plate of the folding container of the above.
FIG. 9 is an explanatory view showing the rotation of the first side plate in the folding container.
FIG. 10 is an explanatory view showing the rotation of the second side plate in the folding container.
11A and 11B show a second side plate of the same folding container, in which FIG. 11A is a front view, and FIG. 11B is a rear view.
FIG. 12 is a cross-sectional view showing a state in which the lock part is fitted in the locked part.
FIG. 13 is a cross-sectional view showing a state in which the lock portion of the same is opposed to an opening / closing opening.
FIG. 14 is a front view showing a state in which lock portions are connected to both sides of the lock operation member of the above.
FIGS. 15A and 15B show the locking operation member of the above, where FIG. 15A is a front view and FIG.
16A and 16B show the lock portion of the above, where FIG. 16A is a front view and FIG. 16B is a cross-sectional view.
[Explanation of symbols]
1 Bottom plate
2a First side plate
2b Second side plate
3 Folding container
4 Lock part
5 Lock receiving part
6 holes
7 Sliding contact surface
9 Protruding tip opening
10 Opening / exiting part
11 L-shaped groove

Claims

A pair of first side plates rotatably attached to a pair of opposing sides of the rectangular bottom plate, and a pair of second side plates rotatably attached to another pair of opposing sides A folding container that is folded in a state where the pair of second side plates are folded down after the first side plates are folded, and the pair of second side plates are raised and then the pair of first side plates are erected and assembled into a box shape The first side plate is provided with a lock portion projecting outward from the side end portion, and the second side plate is provided with a lock receiving portion into which the lock portion provided on the first side plate is fitted in an upright state. A number of holes are formed in the second side plate, and when the first side plate is rotated while the second side plate stands up and slightly tilted inward, the second side plate extends outward from the side end of the first side plate. lock the inner surface portion of the second side plate corresponding to the rotational locus of the tip of the locking portion is drawn projecting Folding container tip parts is characterized by comprising a sliding sliding guide surface movable.

A lock portion that protrudes outward from the side end portion of the first side plate is provided so as to be movable up and down, and a lock receiving portion is provided to protrude from the side end portion of the inner surface of the second side plate, and a protruding tip surface projects from the lock receiving portion. An L-shaped groove portion having a substantially L-shaped longitudinal section having a protruding tip opening portion that opens up and down and having an opening for insertion and removal at an upper portion or a lower portion in a direction along the inner surface of the second side plate, The locking portion of the first side plate can be freely inserted and removed from the L-shaped groove opening portion with the side plate standing upright, and the locking portion faces the loading and unloading opening portion while the locking portion is positioned within the L-shaped groove portion. 2. The folding container according to claim 1, wherein the folding container is set so that the state located at the position is the unlocked state, and the state located at the position not facing the opening / closing opening is the locked state.