JP3903253B2

JP3903253B2 - Transport folding container

Info

Publication number: JP3903253B2
Application number: JP2002295611A
Authority: JP
Inventors: 康雄佐藤; 哲朗堤; 友紀佐藤
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2002-10-09
Filing date: 2002-10-09
Publication date: 2007-04-11
Anticipated expiration: 2022-10-09
Also published as: JP2004131105A

Description

【０００１】
【発明が属する技術分野】
本発明は、種々の部品や、部品を収めたトレイ、ケース等を収納し、フォークリフト等で運搬し、不使用時には折畳み可能となる輸送用折畳コンテナの改良に関する。
【０００２】
【従来の技術】
従来より、金属製の格子によって形成される折畳可能な輸送用折畳コンテナは一般的によく知られており、例えば、特開平６−５６１９０号に開示される発明、即ち、底枠上に対して折畳み自在な左右一対の側枠並びに前後の枠を有し、前後の枠と側枠との隣接縁部のいずれか一方に直角状の折り曲げ部を形成し、組立時にコーナー部を避けて前後の枠と側枠の連結を行うべく構成した折畳自在なコンテナ(以下、先行技術１という。)や、実開平５−１９１９３号に開示される発明、即ち、台枠と、この台枠の上面に取付けた格子状底板と、該底板の周縁部に立設する格子状の前後部両壁体及び格子状の左右両側壁体とを備えたコンテナにおいて、前記壁体のうち少なくとも一つの壁体に、該壁体の高さ方向中間位置から底板に至る下半部が開口する開口部を形成するとともに。該開口部の上端部に、前記開口部を開閉する扉体を回動自在に支持し、かつ、この扉体を前記開口部の閉鎖位置で係合及び離脱可能にロックするロック手段を設けた輸送用折畳コンテナ（以下、先行技術２という。）等が公知である。
【０００３】
【発明が解決しようとする課題】
上記先行技術１に係る輸送用折畳コンテナは、折畳状態で積載する際の、上段に積載されたコンテナが下段のコンテナに対してずれることを防止しようとするものであるが、全水平方向に対するズレを防止するものでなく、左右方向のみに対して行うものであり、その一方で、実際に生ずるコンテナのズレは、様々な方向からの外力により生ずるものであることから、確実にズレを防止するには到底至らないものであった。
【０００４】
また、一方で、先行技術２に係る輸送用折畳コンテナにおいては、左格子板及び右格子板(4)は、その下端に設けたＵ字環を係合穴に挿入する構成のものであり、該Ｕ字環は、常に重力によって、抜脱する方向の負荷がかかっていることから、輸送用折畳コンテナの使用中に、当該輸送用折畳コンテナを傾ける必要が生じた場合、作業者の操作等によって左格子板若しくは右格子板が底格子板から持ち上がって外れ、内容物をこぼしたり、破損することがあった。
【０００５】
本発明は以上の事情に鑑みてなされたものであり、折畳んで積載する際における上段に積み上げられたコンテナと下段のコンテナが相対的に全水平方向にずれることがなく、安定して積重ねを行うことができ、折畳容易であるとともに使用時には不用意に格子板が外れることもなく、更には折畳まれた状態から使用時の組立を極めて容易とすることができる優れた輸送用折畳コンテナを提供することを、課題とするものである。
【０００６】
【課題を解決するための手段】
四隅に脚部(60)を備えた基枠(6)と、該基枠(6)上面に取付けた底格子板(1)と、該底格子板(1)の前後端を回動軸として連結される前格子板(2)及び後格子板(5)と、該後格子板(5)の左右側端を回動軸として連結される左格子板(3)及び右格子板(4)とからなり、該左格子板(3)及び右格子板(4)の自由端を前記前格子板(2)の両側端に一致させることにより箱状体とし、左格子板 (3) 及び右格子板 (4) の下端には、前方若しくは後方へ爪を延設してなる鉤部 (30)(40) を設け、左格子板 (3) 及び右格子板 (4) が、後格子板 (5) に対して上方にスライド可能な連結体によって連結されるとともに、該左格子板 (3) 及び右格子板 (4) が前後方向に移動することで、底格子板 (1) を形成する金属製線材と、前記鉤部 (30)(40) とが係脱可能に係止して、左格子板 (3) 及び右格子板 (4) の持ち上がりを防止する輸送用折畳コンテナにおいて、前格子板(2)及び後格子板(5)の下端部を内側へ折曲若しくは湾曲して夫々曲底部(20)(50)を形成するとともに、脚部(60)の最大幅を格子の単位幅寸法より小さくしたことにより、折畳み積載する際に、下側のコンテナにおける前記曲底部(20)(50)の格子に上側のコンテナの各脚部(60)の踵部(65)が嵌り込み、前記曲底部(20)(50)の格子の三辺を構成する金属製線材(90)(91)(92)によって前記上側コンテナの各脚部(60)を保持し、全水平方向へのずれを防止したことを特徴とする輸送用折畳コンテナを、課題を解決するための手段とする。
【０００７】
また、上記輸送用折畳コンテナの構成につき、基枠 (6) に対して平面視斜めに交叉するように、底格子板 (1) の下側四隅位置には、前記基枠 (6) の端部及び底格子板 (1) の金属製線材に対して案内枠 (7) を固着した輸送用折畳コンテナを、解決するための手段とするものである。
【０００８】
【発明の効果】
本発明に係る輸送用折畳コンテナによれば、左格子板及び右格子板の下端には、前方若しくは後方へ延設された鉤部を設けるとともに、左格子板及び右格子板が、上方及び前後方向に移動することにより、底格子板の格子と、前記鉤部とが係脱可能に係止し、左格子板及び右格子板の持ち上がりを防止することができ、当該左格子板及び右格子板が不用意に外れることがないものとすることができる。
【０００９】
また、同構成により、折畳時においては、左格子板及び右格子板を前方若しくは後方に移動させて、上に持ち上げることで、容易に当該左格子板及び右格子板を底格子板から取外すことができるとともに、鉤部が底格子板と接触しない状態で左格子板及び右格子板を折畳むことができることから、後格子板を後方へ倒すことなく、簡単に当該輸送用折畳コンテナを折畳むことができる。
【００１０】
更に、後格子板の下端部を折曲して曲底部を設けるとともに、左格子板及び右格子板の後側最下端に格子の枡を形成しないものとしたことにより、折畳操作時に、後格子板に対して垂直に起立する曲底部と、左格子板及び右格子板とが接触することを防止し、より円滑に折畳操作を行うことができる。
【００１１】
また、前格子板及び後格子板の下端部を内側へ折曲若しくは湾曲して夫々曲底部を形成するとともに、脚部の最大幅を格子の単位幅寸法より小さくして、折畳み積載する際に、積載時における下段のコンテナの前記曲底部に、積み上げられた上段のコンテナの各脚部が嵌り込む構成とした場合には、脚部に対して、前後方向及び左右のうち内側の一方向の計三方向に格子を構成する金属製線材が配置され、ズレを防止するストッパーとして機能し、左右のうち外側方向へは、他の脚部における内側方向の金属製線材がストッパーとして機能することから、積載時における上段に積み上げられたコンテナと下段のコンテナが相対的に全水平方向にずれることがなく、安定して積重ねを行うことができる。
【００１２】
【発明の実施の形態及び実施例】
図１は本発明の実施例１に係る輸送用折畳コンテナを示す斜視図、図２は同実施例１に係る輸送用折畳コンテナの底格子板及び基枠の取付状態を示す斜視図、図３は同実施例１に係る輸送用折畳コンテナの分解状態を示す斜視図、図４は同実施例１に係る輸送用折畳コンテナの後格子板と、左右格子板とを連結する状態を示す斜視図、図５は同実施例１に係る輸送用折畳コンテナの底格子板と後格子板とを取付ける状態を示す斜視図、図６は図５の部分拡大説明図、図７は底格子板に前格子板を取付ける状態を示す斜視図、図８は実施例１に係る輸送用折畳コンテナを積載する状態を示す斜視図、図９は同積載した状態を示す説明図、図１０は図９の部分拡大説明図、図１１は実施例１に係る折畳状態の各格子板のみの関係を示す簡略図、図１２は図１１の折畳状態から前格子板を展開した状態を示す各格子板のみの関係を示す簡略図、図１３は図１２の状態から後格子板、左格子板、右格子板を展開した状態を示す各格子板のみの関係を示す簡略図、図１４は図１３の状態から左格子板及び右格子板を上方へスライドさせた状態を示す各格子板のみの関係を示す簡略図、図１５は図１４の状態から、左格子板及び右格子板を相互に略平行とした状態を示す各格子板のみの関係を示す簡略図、図１６は図１５の状態から左格子板及び右格子板を底格子板へ下した状態を示す各格子板のみの関係を示す簡略図、図１７は図１６の状態から左格子板及び右格子板を後方へスライドさせた状態を示す説明図、図１８は図１７の状態から前格子板の上部格子板を起こし、組立が完成した状態を示す簡略図、図１９は底格子板の金属製線材と、左格子板の鉤部との係合関係を示す説明図、図２０は後格子板及び右格子板の連結部を示す拡大断面説明図、図２１は右格子板を後方へスライドさせた状態における後格子板及び右格子板の連結部を示す拡大断面説明図、図２２は本発明の実施例２に係る輸送用折畳コンテナの組立状態を示す斜視図、図２３は同実施例２に係る輸送用折畳コンテナの左格子板、後格子板、右格子板を連結した状態を示す斜視図である。
【００１３】
本発明の実施例１に係る輸送用折畳コンテナは、図１乃至図６に示すように、長手方向に連続する溝６４を形成した外枠６１を二本平行して左右に配置し、該二本の外枠６１の間に相互に平行する三本の内枠６２を架橋し、更に、外枠６１の端部近傍の下面に脚部６０を設けて構成した基枠６と、該基枠６の上部に溶着される底格子板１と、該底格子板１の前後端を回動軸として夫々金属製薄板を巻いた形状とした連結金具８ａで連結される前格子板２及び後格子板５と、後格子板５の左右側端を回動軸として連結金具８ｂで連結される左格子板３及び右格子板４とからなるものである。
【００１４】
製造時においては、図４に示すように、連結された左格子板３、後格子板５、右格子板４を順次底格子板１に取り付け、図７に示すように、該左格子板３及び右格子板４の自由端を前記前格子板２の両側端に一致させることにより箱状体とした構成を有するものであり、図６にも示すように、基枠６に対して平面視斜めに交叉するように、底格子板１の下側四隅位置には、前記基枠６の端部及び底格子板１の金属製線材に対して案内枠７を固着し、また、外枠６１の四隅下部には、脚部６０が固着された構成である。尚、底格子板１、前格子板２、後格子板５、右格子板４、左格子板３は、いずれも、金属製線材の格子で形成される板状体である。
【００１５】
前格子板２は、上部格子板２４の下端と下部格子板２５の上端をコイルバネ２１及び連結金具８ｃで連結し、該コイルバネ２１を軸として下部格子板２５に対して上部格子板２４が回動するものとし、上部格子板２４及び下部格子板２５の左右には、左格子板３及び右格子板４の前側縁部の中央部及び上部に設けられたＵ字環３１ａ、４１ａとともに当該前格子板２を固定するためのロック装置２２が取付けられている。該ロック装置２２は、格子からなる輸送用折畳コンテナにおいて一般的に使用されるもので、前格子板２を固定するためのロック杆２３と該ロック杆２３に一体に取付けられる把持部と、把持部を固定するための固定手段とを備え、左格子板３及び右格子板４の前記Ｕ字環３１ａ、４１ａを前格子板２の格子内に通した後、ロック装置２２のロック杆２３を前記Ｕ字環３１ａ、４１ａに通し、該ロック杆２３の把持部を固定手段により固定することにより、前格子板２を左格子板３及び右格子板４と連結状態で保持するものである。Ｕ字環３１ａ、４１ａは、前格子板２の格子内に通す際に、該Ｕ字環３１ａ、４１ａを構成する金属製線材の側面と前格子板２の格子を構成する金属製線材の側面とが接触することにより、当該金属製線材相互の反発弾性力及び摩擦抵抗によって、Ｕ字環３１ａ、４１ａと前格子板２の格子とを固定するものである。
【００１６】
また、前記前格子板２における下部格子板２５の下端側は後方向へ直角に折曲した曲底部２０を形成しており、当該折曲により組立時に後格子板５が底格子板１上で容易に垂直に起立できるものとしている。該前格子板２は、図６に示すように、前記最下端部の金属製線材９４を、底格子板１における最も前側の縁部位置となる金属製線材１０ではなく、縁部位置よりも内側となる金属製線材１１に対して、連結金具８ａを用いて、回動可能に連結している。
【００１７】
後格子板５においても、詳細な図示は省略するが、前記前格子板２と同様に、その下端側を前側へ直角に折曲して曲底部５０を形成した構成としており、その最下端部の金属製線材を、底格子板１における最も後側の縁部位置となる金属製線材ではなく、縁部位置よりも内側となる金属製線材に対して、連結金具８ａを用いて、回動可能に連結している。
【００１８】
このように底格子板１の縁部より内側の金属製線材に対して、前格子板２及び後格子板５を取付けることによって、曲底部２０が底格子板１上に当接することが、前格子板２及び後格子板５が垂直に起立する状態とすることができる。
【００１９】
左格子板３及び右格子板４は、前記したように、当該左格子板３及び右格子板４の前側縁部の中央部及び上部に、前格子板２との連結を目的としてＵ字環３１ａ、４１ａを設けるとともに、左格子板(3)及び右格子板(4)の下端には、金属製線材によって後向きに爪を形成した鉤部３０、４０を形成しており、該鉤部３０、４０の根元は前記左格子板３及び右格子板４に固着したものとしている。
【００２０】
即ち、左格子板３及び右格子板４の下端に設けられる連結手段として、Ｕ字環３１ａ、４１ａには、常に重力によって抜脱する方向の負荷がかかっており、Ｕ字環３１ａ、４１ａに対して接触する金属製線材の弾性反発力及び摩擦抵抗による係止力では十分に固定する事ができず、当該輸送用折畳コンテナの使用中に、作業者の操作等によって左格子板３若しくは右格子板４が底格子板１から持ち上がって外れ、内容物を溢したり破損する虞があることから、これを排除するものであり、本発明においては、左格子板３及び右格子板４の下端部に固着され、且つ底格子板１の金属製線材に係止可能な鉤部３０、４０と、該鉤部３０、４０を係脱するための左格子板３及び右格子板４の移動機構を具備することによって当該輸送用折畳コンテナの使用時に左格子板３若しくは右格子板４が底格子板１から不用意に外れないものとしている。
【００２１】
左格子板３及び右格子板４の移動機構は、後格子板５がその下端部を軸として前側へ僅かに倒れるように回動することと、後格子板５に対して、左格子板３及び右格子板４が上方にスライドすることの組合わせによるものである。
【００２２】
当該左格子板３及び右格子板４の上下方向のスライドは、単位格子寸法よりも長さ寸法の小さい連結金具８ｂを用いることによって可能とするものであり、通常状態では連結金具８ｂは、重力によりその下端が緯線となる金属製線材の上側面に当接する位置にあり、該連結金具８ｂの上端には金属製線材は当接していないが、連結金具８ｂの上端が一つ上側の緯線となる金属製線材に当接する位置まで、左格子板３若しくは右格子板４を持ち上げることができ、これに併せて、後格子板５を前方へ倒すように回動操作することにより、左格子板３及び右格子板４の鉤部３０、４０を移動させることができる。このようにして、鉤部３０、４０を外枠６１の溝６４内であって、且つ底格子板１の格子間となる位置に差し込み、後格子板５の曲底部５０を底格子板１上に当接させるように回動操作を元に戻すと、図７に示すように、後格子板５が底格子板１に対して垂直になるとともに、前記左格子板３及び右格子板４の鉤部３０、４０が、底格子板１の左右方向に設けられた金属製線材に係止する構成である。
【００２３】
また、左格子板３及び右格子板４における鉤部３０、４０と底格子板１の金属製線材とを係合させるために、前記左格子板及び右格子板を前後方向へスライドさせるために、後格子板の金属製線材と、右格子板若しくは左格子板の金属製線材を連結した状態で、図２０に示すように連結金具内に隙間（いわゆる「遊び」）を形成するものとして、左格子板３及び右格子板４が前方へスライドされると、図２１に示すように、前記隙間の分だけ後格子板の金属製線材と、右格子板若しくは右格子板の金属製線材とが近づく距離だけ、スライド距離を得ることができる。
【００２４】
尚、本実施例１においては、これに加えて、左格子板３及び右格子板４の下端にも底格子板１との連結を目的としてＵ字環３１ｂ、４１ｂを設けている。
【００２５】
また、左格子板３及び右格子板４のいずれにおいても、後側最下端となる部分には金属製線材による桝目を形成しないものとしている。当該構成とすることにより、各格子板相互の撓み等により、後格子板５の曲底部５０と、左格子板３及び右格子板４との接触により折畳操作を円滑に行えなくなることを防止するためである。
【００２６】
以上の構成を有する本発明の実施例１について、図１１乃至図１８の格子板相互の関係のみを示した簡略図、及び図１９の鉤部４０と底格子板との関係を示した説明図を用いて、使用時における折畳状態からの輸送用折畳コンテナの組立を説明する。
【００２７】
先ず、図１１に示す折畳まれた輸送用折畳コンテナにおける前格子板２の上部格子板２４を前側で倒した状態として前格子板２を起こす。図１２に示すように前格子板２は、下端に曲底部２０が形成されているため、底格子板１上に起立した状態が保持される。
【００２８】
次いで、相互に連結された後格子板５、左格子板３、右格子板４を図１３に示すように起こし、その状態から、図１４に示すように、左格子板３及び右格子板４を上へスライドさせる。
【００２９】
ここで、図１９に右格子板における鉤部４０と底格子板との関係を示すように、左格子板３及び右格子板４の下端に設けたＵ字環３１ｂ、４１ｂと鉤部３０、４０を、外枠６１の溝６４上に位置する底格子板１の左右端側の格子内を通じて前記溝内に挿入すべく、図１５に示すように、下方へ左格子板３及び右格子板４を下ろし、次いで、前記左格子板３及び右格子板４を図１６に示すように後方にスライドさせながら、底格子板１の金属製線材に前記鉤部３０、４０を係止させる。
【００３０】
最後に前格子板２の上部格子板２４を起こすとともに、前格子板２の左右縁部に設けたロック装置２２と、左格子板３及び右格子板４の前側端部の中央部及び上部に設けられたＵ字環３１ａ、４１ａとを連結する。
【００３１】
組立てられた当該輸送用折畳コンテナの折畳作業は、上記手順の逆によって、行うことができる。即ち、組立てた輸送用折畳コンテナを折畳む作業は、先ず、前格子板２の左右縁部に設けたロック装置２２と、左格子板３及び右格子板４の前側端部の中央部及び上部に設けられたＵ字環３１ａ、４１ａとを取外し、上部格子板を前方へ折畳み、次いで、左格子板３及び右格子板４を前方へスライドさせて金属製線材と鉤部３０、４０との係合を解いた上で、上方に前記左格子板３及び右格子板４を持ち上げることにより、底格子板１から左格子板３及び右格子板４を取外す。
【００３２】
そして、左格子板３及び右格子板４を後格子板５に前方から重合した後、当該後格子板、左格子板及び右格子板を前方へ倒して折畳み、最後に、前格子板を後方へ倒して折畳むものである。従って、後格子板を後方へ傾斜させることもなく、簡単に折畳むことができる。
【００３３】
尚、底格子板１の下部に設けた案内枠７は、フォークリフトの先端を当該輸送用折畳コンテナの各脚部６０の間に差し込む際に、フォークリフトの先端が直接脚に当たらず、脚部６０の間に案内することで、脚部６０の変形を防止するためのものである。
【００３４】
また、前格子板２及び後格子板５の下端部を内側へ折曲して夫々曲底部２０、５０を形成するとともに、脚部６０の最大幅を格子の単位幅寸法より小さくしている。
【００３５】
脚部６０は、図１０にも示すように、その下端部は、接地に適した平面状の踵部６５と、該踵部６５に連続して窪んだ掛止部６６とを備えており、図８及び図９に示すように、折畳み積載する際に、積載時における下段のコンテナの前記曲底部２０、５０に、積み上げられた上段のコンテナの各脚部６０の踵部６５が嵌り込む構成とした場合には、脚部６０に対して、左右方向及び前後のうち内側の一方向の計三方向に格子を構成する前格子板２又は後格子板３の金属製線材９０、９１、９２が配置されることとなり、ズレを防止するストッパーとして機能することとなる。
【００３６】
尚、脚部６０に対して格子が配置されない外側方向へは、他の脚部６０における内側方向の金属製線材９０がストッパーとして機能することとなることから、結局、積載時における上段に積み上げられたコンテナと下段のコンテナが相対的に全水平方向にずれることがなく、安定して積重ねを行うことができることとなる。
【００３７】
また、本実施例１においては、折畳時に、左格子板３及び右格子４の上に載置した際に、後格子板５の曲底部５０を前記左格子板及び右格子板の積重ね高さ寸法より小さくすることにより、後格子板５が前記左格子板３及び右格子板４の上に載置された状態で接地面に対して水平とすることができ、これによって、複数の折畳状態の当該輸送用折畳コンテナを、前後左右の向きを同一方向に揃えて、安定して積重ねることができる。
【００３８】
尚、本発明においては、実施例１における鉤部３０、４０をＵ字環３１ｂ、４１ｂと、またＵ字環３１ｂ、４１ｂを鉤部３０、４０として、夫々の配置を入れ替えることもできる。
【００３９】
次に、本発明の実施例２に係る輸送用折畳コンテナは、図２２及び図２３に示すように、基本構成及び組立、使用方法において、実施例１と同様のものであり、左格子板３及び右格子板４の下端の構成が相違するものである。即ち、当該実施例２に係る輸送用折畳コンテナは、図２３に示すように、実施例１における左格子板３及び右格子板４の下端に設けたＵ字環３１ｂ、４１ｂに代えて、鉤部３０、４０を取付けた構成としたものである。
【００４０】
また、図２２及び２３に示すように、本実施例２に係る輸送用折畳コンテナの前格子板２及び後格子板５における曲底部２０、５０に、当該前格子板２及び後格子板５の捩れを防止するための補強線材２６、５１を溶接している。
【００４１】
本実施例２に係る輸送用折畳コンテナは、当該構成によって、合計四箇所で、底格子板１の金属製線材に前記鉤部３０、４０を係止させることとなることから、前記実施例１における種々の効果に加えて、左格子板３及び右格子板４の持ち上がり防止機能を、より一層、向上させることができ、更に優れた輸送用折畳コンテナとすることができる。
【００４２】
尚、本発明における連結体としては、上記実施例１及び２に開示した金属製部材によって形成される連結金具８ａ、８ｂ、８ｃの他、合成樹脂製の環体を使用することもできる。
【００４３】
また、曲底部２０、５０は、前格子板２若しくは後格子板５を折曲して形成するほか、湾曲して設けることもできる。本実施例１及び２のように折曲により曲底部２０、５０を形成する場合は、底格子板１に対して起立した前記前格子板２若しくは後格子板５が不用意に倒れ難い点において、優れたものとすることができる。
【図面の簡単な説明】
【図１】本発明の実施例１に係る輸送用折畳コンテナを示す斜視図である。
【図２】本発明の実施例１に係る輸送用折畳コンテナの底格子板及び基枠の取付状態を示す斜視図である。
【図３】本発明の実施例１に係る輸送用折畳コンテナの分解状態を示す斜視図である。
【図４】本発明の実施例１に係る輸送用折畳コンテナの後格子板と、左右格子板とを連結する状態を示す斜視図である。
【図５】本発明の実施例１に係る輸送用折畳コンテナの底格子板(1)と後格子板とを取付ける状態を示す斜視図である。
【図６】本発明の実施例１に係る図５の部分拡大説明図である。
【図７】本発明の実施例１に係る底格子板に前格子板を取付ける状態を示す斜視図である。
【図８】本発明の実施例１に係る輸送用折畳コンテナの積載前の状態を示す斜視図である。
【図９】本発明の実施例１に係る輸送用折畳コンテナを積載した状態を示す説明図である。
【図１０】本発明の実施例１に係る輸送用折畳コンテナの脚部を示す拡大説明図である。
【図１１】本発明の実施例１に係る輸送用折畳コンテナの折畳状態の各格子板の関係を示す簡略図である。
【図１２】本発明実施例１の前格子板を展開した状態における各格子板の関係を示す簡略図である。
【図１３】本発明実施例１の後格子板、左格子板、右格子板を展開した状態における各格子板の関係を示す簡略図である。
【図１４】本発明実施例１の左格子板及び右格子板を上方へスライドさせた状態における各格子板の関係を示す簡略図である。
【図１５】本発明実施例１の左格子板及び右格子板を相互に略平行とした状態における各格子板の関係を示す簡略図である。
【図１６】本発明実施例１の左格子板及び右格子板を底格子板へ下ろした状態における各格子板の関係を示す簡略図である。
【図１７】本発明実施例１の左格子板及び右格子板を後方へスライドさせた状態における各格子板の関係を示す簡略図である。
【図１８】本発明実施例１の上部格子板を起こして組立が完成した状態を示す各格子板の関係を示す簡略図である。
【図１９】底格子板の金属製線材と、左格子板の鉤部との係合関係を示す拡大説明図である。
【図２０】後格子板及び右格子板の連結部を示す拡大断面説明図である。
【図２１】右格子板を後方へスライドさせた状態における後格子板及び右格子板の連結部を示す拡大断面説明図である。
【図２２】本発明の実施例２に係る輸送用折畳コンテナの組立状態を示す斜視図である。
【図２３】本発明の実施例２に係る輸送用折畳コンテナの左格子板、後格子板、右格子板を連結した状態を示す斜視図である。
【符号の説明】
１底格子板
１０金属製線材
１１金属製線材
２前格子板
２０曲底部
２１コイルバネ
２２ロック装置
２３ロック杆
２４上部格子板
２５下部格子板
２６補強線材
３左格子板
３０鉤部
３１ａＵ字環
３１ｂＵ字環
４右格子板
４０鉤部
４１ａＵ字環
４１ｂＵ字環
５後格子板
５０曲底部
５１補強線材
６基枠
６０脚部
６１外枠
６２内枠
６４溝
６５踵部
６６掛止部
７案内枠
８ａ連結金具
８ｂ連結金具
８ｃ連結金具
９０金属製線材
９１金属製線材
９２金属製線材
９４金属製線材[0001]
[Technical field to which the invention belongs]
The present invention relates to an improvement in a folding container for transporting various components, trays, cases and the like containing the components, transported by a forklift or the like, and foldable when not in use.
[0002]
[Prior art]
Conventionally, foldable transport folding containers formed by metal grids are generally well known, for example, the invention disclosed in Japanese Patent Laid-Open No. 6-56190, ie on the bottom frame It has a pair of left and right side frames that can be folded and a front and rear frame, and a right-angled bent part is formed at one of the adjacent edges of the front and rear frame and the side frame, avoiding the corner part during assembly. A foldable container (hereinafter referred to as Prior Art 1) configured to connect the front and rear frames and the side frames, the invention disclosed in Japanese Utility Model Laid-Open No. 5-19193, that is, the underframe and the underframe A container having a grid-like bottom plate attached to the upper surface of the base plate, a grid-like front and rear wall both standing on the peripheral edge of the bottom plate, and a grid-like left and right side wall, and at least one of the walls The lower half of the wall from the intermediate position in the height direction of the wall to the bottom plate And forming an opening for the mouth. At the upper end of the opening, there is provided a locking means for rotatably supporting a door body that opens and closes the opening, and for locking the door so that it can be engaged and detached at a closed position of the opening. A folding container for transportation (hereinafter referred to as Prior Art 2) and the like are known.
[0003]
[Problems to be solved by the invention]
The folding container for transport according to the above prior art 1 is intended to prevent the container loaded in the upper stage from being displaced with respect to the container in the lower stage when loaded in the folded state. This is not to prevent misalignment, but only to the left and right direction. On the other hand, the actual misalignment of the container is caused by external forces from various directions. It was impossible to prevent.
[0004]
On the other hand, in the folding container for transport according to Prior Art 2, the left lattice plate and the right lattice plate (4) are configured to insert a U-shaped ring provided at the lower end thereof into the engagement hole. Since the U-shaped ring is always subjected to a load in the direction to be pulled out due to gravity, if the transport folding container needs to be tilted during use of the transport folding container, In some cases, the left grid plate or the right grid plate was lifted off the bottom grid plate, and the contents were spilled or damaged.
[0005]
The present invention has been made in view of the above circumstances, and the container stacked in the upper stage and the container in the lower stage in the case of folding and loading are not relatively displaced in the entire horizontal direction, and can be stably stacked. An excellent transport fold that is easy to fold and does not inadvertently come off the grid plate during use, and that makes it extremely easy to assemble from the folded state during use. Providing a container is an issue.
[0006]
[Means for Solving the Problems]
A base frame (6) having legs (60) at four corners, a bottom grid plate (1) attached to the upper surface of the base frame (6), and the front and rear ends of the bottom grid plate (1) as pivot axes The front grid plate (2) and the rear grid plate (5) to be coupled, and the left grid plate (3) and the right grid plate (4) coupled with the left and right side ends of the rear grid plate (5) as pivot axes. The left lattice plate (3) and the right lattice plate (4) and the left lattice plate (3) and the right lattice plate (4) and the left lattice plate (3) and right At the lower end of the lattice plate (4) , there are provided flanges (30) and (40) with claws extending forward or backward, and the left lattice plate (3) and the right lattice plate (4) are the rear lattice plates. (5) and the left lattice plate (3) and the right lattice plate (4) are moved in the front-rear direction to form the bottom lattice plate (1) . anti a metal wire to the hook (30) (40) and is engaged detachably locked, left grid plate (3) and right grid plate lift of (4) In shipping folding container that, the lower end portion inward in bent or curved so as to form respective Kyokusoko portion (20) (50) of the front grid plate (2) and rear grid plate (5), the legs ( The maximum width of 60) is smaller than the unit width dimension of the lattice, so that when folded and loaded, each leg (60) of the upper container is placed on the lattice of the bent bottom (20) (50) in the lower container. The leg portions (60) of the upper container are fitted by the metal wire rods (90), (91), and (92) constituting the three sides of the lattice of the bent bottom portions (20) and (50). A folding container for transportation, which is characterized in that it is held and is prevented from shifting in the entire horizontal direction, is a means for solving the problem.
[0007]
Also, every structure of the shipping foldable container, so as to cross in plan view obliquely to the base frame (6), the lower four corners of the bottom grid plate (1), said base frame (6) A folding container for transportation in which the guide frame (7) is fixed to the metal wire rods of the end and bottom grid plates (1) is used as a means for solving the problem.
[0008]
【The invention's effect】
According to the folding container for transportation according to the present invention, the lower end of the left lattice plate and the right lattice plate is provided with a flange extending forward or rearward, and the left lattice plate and the right lattice plate are arranged upward and downward. By moving in the front-rear direction, the lattice of the bottom lattice plate and the collar portion are detachably locked, and the left lattice plate and the right lattice plate can be prevented from being lifted. It can be assumed that the lattice plate is not accidentally detached.
[0009]
Also, with the same configuration, when folding, the left and right grid plates are easily removed from the bottom grid plate by moving the left and right grid plates forward or backward and lifting them up. In addition, the left and right grid plates can be folded without the buttock coming into contact with the bottom grid plate. Can be folded.
[0010]
Furthermore, the lower end of the rear lattice plate is bent to provide a curved bottom portion, and the lattice ridges are not formed at the lowermost rear end of the left lattice plate and the right lattice plate. It is possible to prevent the bent bottom portion standing upright with respect to the lattice plate from coming into contact with the left lattice plate and the right lattice plate, and to perform the folding operation more smoothly.
[0011]
In addition, when folding and laminating the lower end of the front lattice plate and the rear lattice plate inwardly bent or curved to form the curved bottom portion, respectively, the maximum width of the leg portion is smaller than the unit width dimension of the lattice In the case where each leg portion of the stacked upper container is fitted into the bent bottom portion of the lower container at the time of loading, the inner one of the front and rear direction and the left and right sides of the leg portion The metal wires that make up the grid are arranged in three directions in total, functioning as a stopper to prevent misalignment, and the metal wires in the inner direction at the other legs function as stoppers to the outside of the left and right The containers stacked in the upper stage and the lower container at the time of loading are not relatively displaced in the horizontal direction, and can be stably stacked.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view showing a folding container for transportation according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing a mounting state of a bottom lattice plate and a base frame of the folding container for transportation according to Embodiment 1. 3 is a perspective view showing an exploded state of the transport folding container according to the first embodiment, and FIG. 4 is a state in which the rear lattice plate and the left and right lattice plates are connected to the transport folding container according to the first embodiment. FIG. 5 is a perspective view showing a state in which the bottom lattice plate and the rear lattice plate of the folding container for transportation according to the first embodiment are attached, FIG. 6 is a partially enlarged explanatory view of FIG. 5, and FIG. FIG. 8 is a perspective view illustrating a state in which the front folding plate is attached to the bottom lattice plate, FIG. 8 is a perspective view illustrating a state in which the folding container for transportation according to the first embodiment is loaded, and FIG. 9 is an explanatory diagram illustrating the loaded state. 10 is a partially enlarged explanatory view of FIG. 9, and FIG. 11 is a simplified diagram showing the relationship of only the lattice plates in the folded state according to the first embodiment. 2 is a simplified diagram showing the relationship of each lattice plate showing the state in which the front lattice plate is expanded from the folded state of FIG. 11, and FIG. 13 is the expanded state of the rear lattice plate, the left lattice plate, and the right lattice plate from the state of FIG. FIG. 14 is a simplified diagram showing the relationship between only the lattice plates showing the state of sliding the left lattice plate and the right lattice plate upward from the state of FIG. FIG. 15 is a simplified diagram showing the relationship between only the lattice plates showing the state in which the left lattice plate and the right lattice plate are substantially parallel to each other from the state of FIG. 14, and FIG. FIG. 17 is an explanatory view showing a state in which the left lattice plate and the right lattice plate are slid rearward from the state of FIG. 16, and FIG. 17 is a simplified diagram showing the relationship of each lattice plate showing the state where the lattice plate is lowered to the bottom lattice plate. FIG. 18 shows a state where the assembly is completed by raising the upper lattice plate of the front lattice plate from the state of FIG. FIG. 19 is an explanatory view showing the engagement relationship between the metal wire rod of the bottom lattice plate and the collar portion of the left lattice plate, and FIG. 20 is an enlarged sectional view showing the connecting portion of the rear lattice plate and the right lattice plate. FIG. 21, FIG. 21 is an enlarged cross-sectional explanatory view showing a connecting portion of the rear lattice plate and the right lattice plate in a state where the right lattice plate is slid rearward, and FIG. 22 is a diagram of the transport folding container according to the second embodiment of the present invention. FIG. 23 is a perspective view showing a state in which the left lattice plate, the rear lattice plate, and the right lattice plate of the folding container for transportation according to the second embodiment are connected.
[0013]
As shown in FIGS. 1 to 6, the folding container for transportation according to the first embodiment of the present invention has two outer frames 61 formed with grooves 64 continuous in the longitudinal direction arranged in parallel on the left and right, A base frame 6 constituted by bridging three inner frames 62 parallel to each other between two outer frames 61 and further providing a leg 60 on the lower surface near the end of the outer frame 61; The bottom grid plate 1 welded to the upper part of the frame 6, the front grid plate 2 and the rear grid plate 2 connected by connecting metal fittings 8 a each formed by winding a thin metal plate with the front and rear ends of the bottom grid plate 1 as rotation axes. The grid plate 5 is composed of a left grid plate 3 and a right grid plate 4 which are connected by a connecting metal fitting 8b with the left and right ends of the rear grid plate 5 as rotation axes.
[0014]
At the time of manufacture, as shown in FIG. 4, the connected left lattice plate 3, rear lattice plate 5, and right lattice plate 4 are sequentially attached to the bottom lattice plate 1, and as shown in FIG. The right grid plate 4 has a box-like structure by matching the free ends of the right grid plate 4 with the both side ends of the front grid plate 2, and as shown in FIG. Guide frames 7 are fixed to the ends of the base frame 6 and the metal wire rod of the bottom grid plate 1 at the lower four corner positions of the bottom grid plate 1 so as to cross at an angle. The leg portion 60 is fixed to the lower part of the four corners. The bottom lattice plate 1, the front lattice plate 2, the rear lattice plate 5, the right lattice plate 4, and the left lattice plate 3 are all plate-like bodies formed of a metal wire lattice.
[0015]
The front lattice plate 2 connects the lower end of the upper lattice plate 24 and the upper end of the lower lattice plate 25 with a coil spring 21 and a connecting fitting 8c, and the upper lattice plate 24 rotates with respect to the lower lattice plate 25 about the coil spring 21. The left and right sides of the upper lattice plate 24 and the lower lattice plate 25 are connected to the front lattice together with the U-shaped rings 31a and 41a provided at the center and upper portions of the front side edges of the left lattice plate 3 and the right lattice plate 4, respectively. A locking device 22 for fixing the plate 2 is attached. The lock device 22 is generally used in a folding container made of a lattice, and includes a lock rod 23 for fixing the front lattice plate 2 and a gripping unit attached to the lock rod 23 integrally. Fixing means for fixing the gripping part, and after passing the U-shaped rings 31a and 41a of the left lattice plate 3 and the right lattice plate 4 through the lattice of the front lattice plate 2, the lock rod 23 of the lock device 22 is provided. Is passed through the U-shaped rings 31a and 41a, and the gripping portion of the lock rod 23 is fixed by fixing means, thereby holding the front lattice plate 2 in a connected state with the left lattice plate 3 and the right lattice plate 4. . When the U-shaped rings 31a and 41a are passed through the lattice of the front lattice plate 2, the side surfaces of the metal wire constituting the U-shaped rings 31a and 41a and the side surfaces of the metal wire constituting the lattice of the front lattice plate 2 are used. And the U-rings 31a and 41a and the lattice of the front lattice plate 2 are fixed by the repulsive elastic force and frictional resistance between the metal wires.
[0016]
Further, a lower end side of the lower lattice plate 25 in the front lattice plate 2 forms a bent bottom portion 20 bent at a right angle in the rear direction, and the rear lattice plate 5 is formed on the bottom lattice plate 1 during assembly by the bending. It is assumed that it can stand upright easily. As shown in FIG. 6, the front grid plate 2 is configured such that the lowermost metal wire 94 is not the metal wire 10 that is the frontmost edge position in the bottom grid plate 1 but the edge position. It connects with the metal wire 11 used as inner side so that rotation is possible using the connection metal fitting 8a.
[0017]
Although the detailed illustration of the rear lattice plate 5 is also omitted, like the front lattice plate 2, the lower end side is bent at a right angle to the front side to form a bent bottom portion 50, and the lowermost end portion thereof. The metal wire is rotated by using the connecting metal fitting 8a with respect to the metal wire located inside the edge position, not the metal wire that is the rearmost edge position in the bottom grid plate 1. It is connected as possible.
[0018]
Thus, by attaching the front lattice plate 2 and the rear lattice plate 5 to the metal wire inside the edge of the bottom lattice plate 1, it is possible that the curved bottom portion 20 abuts on the bottom lattice plate 1. The lattice plate 2 and the rear lattice plate 5 can stand vertically.
[0019]
As described above, the left lattice plate 3 and the right lattice plate 4 have a U-shaped ring at the center and upper part of the front side edge of the left lattice plate 3 and the right lattice plate 4 for the purpose of connection with the front lattice plate 2. 31a and 41a are provided, and at the lower ends of the left lattice plate (3) and the right lattice plate (4), flange portions 30 and 40 are formed by forming metal claws backward with a metal wire rod. , 40 is fixed to the left lattice plate 3 and the right lattice plate 4.
[0020]
That is, as connecting means provided at the lower ends of the left lattice plate 3 and the right lattice plate 4, the U-shaped rings 31a and 41a are always loaded in a direction to be pulled out by gravity, and the U-shaped rings 31a and 41a It cannot be fixed sufficiently by the elastic repulsive force of the metal wire that comes into contact with it and the locking force due to frictional resistance, and the left grid plate 3 or the like by the operator's operation or the like during use of the folding container for transportation. The right grid plate 4 is lifted off from the bottom grid plate 1 and the contents may overflow or be damaged, which is excluded. In the present invention, the left grid plate 3 and the right grid plate 4 are excluded. Of the left lattice plate 3 and the right lattice plate 4 to be engaged with and disengaged from the flange portions 30, 40. Folding container for transportation by providing a moving mechanism Left grid plate 3 or the right grid plate 4 is assumed without departing inadvertently from the bottom grid plate 1 during use.
[0021]
The moving mechanism of the left lattice plate 3 and the right lattice plate 4 is such that the rear lattice plate 5 rotates so that the rear lattice plate 5 slightly tilts forward with the lower end portion as an axis, and the left lattice plate 3 with respect to the rear lattice plate 5. And the right lattice plate 4 is slid upward.
[0022]
The sliding of the left lattice plate 3 and the right lattice plate 4 in the vertical direction is made possible by using a connection fitting 8b whose length is smaller than the unit lattice size. The lower end of the connecting metal fitting 8b is in contact with the upper side of the metal wire, and the upper end of the connecting fitting 8b is not in contact with the upper end of the connecting fitting 8b. The left grid plate 3 or the right grid plate 4 can be lifted up to a position where it abuts against the metal wire, and the left grid plate is operated by rotating the rear grid plate 5 so as to tilt forward. 3 and the ribs 30 and 40 of the right lattice plate 4 can be moved. In this way, the flange portions 30 and 40 are inserted into the grooves 64 of the outer frame 61 and into the positions between the lattices of the bottom lattice plate 1, and the bent bottom portion 50 of the rear lattice plate 5 is placed on the bottom lattice plate 1. As shown in FIG. 7, the rear lattice plate 5 becomes perpendicular to the bottom lattice plate 1 and the left lattice plate 3 and the right lattice plate 4 are brought into contact with each other. The collar portions 30 and 40 are configured to be engaged with a metal wire provided in the left-right direction of the bottom grid plate 1.
[0023]
Further, in order to slide the left and right grid plates in the front-rear direction in order to engage the flanges 30 and 40 of the left and right grid plates 3 and 4 with the metal wire rod of the bottom grid plate 1. In the state where the metal wire of the rear lattice plate and the metal wire of the right lattice plate or the left lattice plate are connected, a gap (so-called “play”) is formed in the connection fitting as shown in FIG. When the left lattice plate 3 and the right lattice plate 4 are slid forward, as shown in FIG. 21, the metal wire rod of the rear lattice plate and the metal wire rod of the right lattice plate or the right lattice plate as much as the gap. The slide distance can be obtained only by the distance that approaches.
[0024]
In the first embodiment, in addition to this, U-shaped rings 31 b and 41 b are also provided at the lower ends of the left lattice plate 3 and the right lattice plate 4 for the purpose of connection to the bottom lattice plate 1.
[0025]
Further, in both the left lattice plate 3 and the right lattice plate 4, a grid made of a metal wire material is not formed in a portion that becomes the lowermost lower end of the rear side. By adopting such a configuration, it is possible to prevent the folding operation from being smoothly performed by the contact between the bent bottom portion 50 of the rear lattice plate 5 and the left lattice plate 3 and the right lattice plate 4 due to mutual bending of the respective lattice plates. It is to do.
[0026]
About Example 1 of the present invention having the above-described configuration, a simplified diagram showing only the mutual relationship between the lattice plates of FIGS. 11 to 18, and an explanatory diagram showing the relationship between the flange 40 and the bottom lattice plate of FIG. The assembly of the folding container for transport from the folded state at the time of use is demonstrated using FIG.
[0027]
First, the front grid plate 2 is raised with the upper grid plate 24 of the front grid plate 2 in the folded shipping container shown in FIG. As shown in FIG. 12, the front grid plate 2 has a bent bottom portion 20 formed at the lower end, so that the front grid plate 2 is kept standing on the bottom grid plate 1.
[0028]
Next, the rear lattice plate 5, the left lattice plate 3, and the right lattice plate 4 connected to each other are raised as shown in FIG. 13, and from that state, as shown in FIG. 14, the left lattice plate 3 and the right lattice plate 4 are raised. Slide up.
[0029]
Here, as shown in FIG. 19, the U-shaped rings 31 b and 41 b provided on the lower ends of the left lattice plate 3 and the right lattice plate 4, and the collar portion 30, as shown in FIG. As shown in FIG. 15, the left lattice plate 3 and the right lattice plate are moved downward to insert 40 into the groove through the lattice on the left and right end sides of the bottom lattice plate 1 positioned on the groove 64 of the outer frame 61. 4 is then lowered, and the left and right grid plates 3 and 4 are slid rearward as shown in FIG. 16, and the flanges 30 and 40 are locked to the metal wire rod of the bottom grid plate 1.
[0030]
Finally, the upper lattice plate 24 of the front lattice plate 2 is raised, the locking device 22 provided at the left and right edge portions of the front lattice plate 2, and the center and upper portions of the front side end portions of the left lattice plate 3 and the right lattice plate 4. The provided U-shaped rings 31a and 41a are connected.
[0031]
The folding operation of the assembled folding container for transportation can be performed by reversing the above procedure. That is, the operation of folding the assembled transport folding container is performed by firstly locking devices 22 provided at the left and right edge portions of the front lattice plate 2, the center portion of the front end portions of the left lattice plate 3 and the right lattice plate 4, and Remove the U-shaped rings 31a and 41a provided on the upper part, fold the upper lattice plate forward, and then slide the left lattice plate 3 and the right lattice plate 4 forward to make the metal wire rods and the collars 30 and 40 The left lattice plate 3 and the right lattice plate 4 are removed from the bottom lattice plate 1 by lifting the left lattice plate 3 and the right lattice plate 4 upward.
[0032]
Then, after superposing the left lattice plate 3 and the right lattice plate 4 on the rear lattice plate 5 from the front, the rear lattice plate, the left lattice plate and the right lattice plate are folded forward, and finally the front lattice plate is moved backward. Fold and fold. Therefore, the rear lattice plate can be easily folded without tilting backward.
[0033]
The guide frame 7 provided at the lower part of the bottom grid plate 1 has a leg portion that does not directly hit the leg when the tip of the forklift is inserted between the leg portions 60 of the folding container for transportation. It is for preventing the leg part 60 from being deformed by being guided between the two parts.
[0034]
Further, the lower end portions of the front lattice plate 2 and the rear lattice plate 5 are bent inward to form curved bottom portions 20 and 50, respectively, and the maximum width of the leg portion 60 is made smaller than the unit width dimension of the lattice.
[0035]
As shown in FIG. 10, the lower end portion of the leg portion 60 includes a flat flange portion 65 suitable for grounding, and a latching portion 66 that is recessed continuously from the flange portion 65. As shown in FIG. 8 and FIG. 9, when folding and loading, the flange portions 65 of the leg portions 60 of the stacked upper container are fitted into the bent bottom portions 20 and 50 of the lower container at the time of loading. In this case, the metal wires 90, 91, 92 of the front lattice plate 2 or the rear lattice plate 3 constituting the lattice in a total of three directions, that is, one of the inner side of the left and right direction and the front and rear direction with respect to the leg portion 60. Will be arranged, and will function as a stopper to prevent displacement.
[0036]
In addition, since the metal wire 90 in the inner direction of the other leg portions 60 functions as a stopper in the outer direction where the grid is not disposed with respect to the leg portions 60, the legs 60 are eventually stacked in the upper stage at the time of loading. Therefore, the stacked containers can be stably stacked without causing the horizontal containers and the lower containers to be displaced relative to each other in the horizontal direction.
[0037]
Further, in the first embodiment, when the folding is placed on the left lattice plate 3 and the right lattice 4 during folding, the bent bottom portion 50 of the rear lattice plate 5 is stacked on the left lattice plate and the right lattice plate. By making the size smaller than the height dimension, the rear grid plate 5 can be made horizontal with respect to the ground plane in a state where it is placed on the left grid plate 3 and the right grid plate 4. The folded containers for transportation in the tatami state can be stably stacked with the front, rear, left and right directions aligned in the same direction.
[0038]
In addition, in this invention, the arrangement | positioning can also be replaced by making the collar parts 30 and 40 in Example 1 into the U-shaped rings 31b and 41b, and making the U-shaped rings 31b and 41b into the collar parts 30 and 40, respectively.
[0039]
Next, as shown in FIGS. 22 and 23, the folding container for transportation according to the second embodiment of the present invention is the same as that of the first embodiment in the basic configuration, assembly, and usage, and the left lattice plate. 3 and the structure of the lower end of the right lattice board 4 are different. That is, as shown in FIG. 23, the folding container according to the second embodiment is replaced with the U-shaped rings 31b and 41b provided at the lower ends of the left lattice plate 3 and the right lattice plate 4 in the first embodiment. In this configuration, the flange portions 30 and 40 are attached.
[0040]
Further, as shown in FIGS. 22 and 23, the front lattice plate 2 and the rear lattice plate 5 are arranged on the bent bottom portions 20 and 50 of the front lattice plate 2 and the rear lattice plate 5 of the folding container for transportation according to the second embodiment. Reinforcing wire rods 26 and 51 for preventing twisting are welded.
[0041]
Since the folding container for transport according to the second embodiment has the configuration, the collar portions 30 and 40 are locked to the metal wire rod of the bottom grid plate 1 at a total of four locations. In addition to the various effects of 1, the lifting prevention function of the left lattice plate 3 and the right lattice plate 4 can be further improved, and a further excellent folding container for transportation can be obtained.
[0042]
In addition, as a connection body in this invention, the ring body made from a synthetic resin can also be used other than the connection metal fittings 8a, 8b, 8c formed by the metal members disclosed in the first and second embodiments.
[0043]
Further, the bent bottom portions 20 and 50 can be formed by bending the front lattice plate 2 or the rear lattice plate 5 as well as being bent. In the case where the bent bottom portions 20 and 50 are formed by bending as in the first and second embodiments, the front lattice plate 2 or the rear lattice plate 5 that stands up with respect to the bottom lattice plate 1 is difficult to fall down carelessly. Can be excellent.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a folding container for transportation according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view showing an attached state of a bottom lattice plate and a base frame of a folding container for transportation according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view showing an exploded state of the folding container for transportation according to Embodiment 1 of the present invention.
FIG. 4 is a perspective view illustrating a state in which the rear lattice plate and the left and right lattice plates are coupled to each other in the transport folding container according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing a state in which a bottom lattice plate (1) and a rear lattice plate of the folding container for transportation according to Embodiment 1 of the present invention are attached.
6 is a partially enlarged explanatory view of FIG. 5 according to Embodiment 1 of the present invention.
FIG. 7 is a perspective view showing a state where a front lattice plate is attached to the bottom lattice plate according to the first embodiment of the present invention.
FIG. 8 is a perspective view showing a state before loading of the folding container for transportation according to Embodiment 1 of the present invention.
FIG. 9 is an explanatory view showing a state in which a folding container for transportation according to Embodiment 1 of the present invention is loaded.
FIG. 10 is an enlarged explanatory view showing legs of the folding container for transportation according to Embodiment 1 of the present invention.
FIG. 11 is a simplified diagram showing the relationship between the lattice plates in the folded state of the transport folding container according to the first embodiment of the present invention.
FIG. 12 is a simplified diagram showing the relationship of each lattice plate in a state where the front lattice plate of Example 1 of the present invention is developed.
FIG. 13 is a simplified diagram showing the relationship of each lattice plate in a state where the rear lattice plate, the left lattice plate, and the right lattice plate of Embodiment 1 of the present invention are developed.
FIG. 14 is a simplified diagram showing the relationship between the lattice plates in a state where the left lattice plate and the right lattice plate of the first embodiment of the present invention are slid upward.
FIG. 15 is a simplified diagram showing the relationship between the respective lattice plates in a state in which the left lattice plate and the right lattice plate of Example 1 of the present invention are substantially parallel to each other.
FIG. 16 is a simplified diagram showing the relationship of the respective lattice plates in a state where the left lattice plate and the right lattice plate of the first embodiment of the present invention are lowered to the bottom lattice plate.
FIG. 17 is a simplified diagram showing the relationship between the lattice plates in a state where the left lattice plate and the right lattice plate of the first embodiment of the present invention are slid rearward.
FIG. 18 is a simplified diagram showing the relationship between each grid plate showing a state where the upper grid plate according to the first embodiment of the present invention is raised and the assembly is completed.
FIG. 19 is an enlarged explanatory view showing an engagement relationship between the metal wire rod of the bottom lattice plate and the flange portion of the left lattice plate.
FIG. 20 is an enlarged cross-sectional explanatory view showing a connecting portion between the rear lattice plate and the right lattice plate.
FIG. 21 is an enlarged cross-sectional explanatory view showing a connecting portion between the rear lattice plate and the right lattice plate in a state in which the right lattice plate is slid rearward.
FIG. 22 is a perspective view showing an assembled state of the folding container for transportation according to Embodiment 2 of the present invention.
FIG. 23 is a perspective view showing a state in which the left lattice plate, the rear lattice plate, and the right lattice plate of the folding container for transportation according to Embodiment 2 of the present invention are connected.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottom lattice board 10 Metal wire material 11 Metal wire material 2 Front lattice board 20 Curved bottom part 21 Coil spring 22 Locking device 23 Lock hook 24 Upper lattice board 25 Lower lattice board 26 Reinforcement wire material 3 Left lattice board 30 Gutter 31a U-shaped ring 31b U-shaped ring 4 right lattice plate 40 collar 41a U-shaped ring 41b U-shaped ring 5 rear lattice plate 50 curved bottom 51 reinforcing wire 6 base frame 60 leg 61 outer frame 62 inner frame 64 groove 65 collar 66 latching portion 7 Guide frame 8a Connecting bracket 8b Connecting bracket 8c Connecting bracket 90 Metal wire 91 Metal wire 92 Metal wire 94 Metal wire

Claims

A base frame (6) having legs (60) at four corners, a bottom grid plate (1) attached to the upper surface of the base frame (6), and the front and rear ends of the bottom grid plate (1) as pivot axes The front grid plate (2) and the rear grid plate (5) to be coupled, and the left grid plate (3) and the right grid plate (4) coupled with the left and right side ends of the rear grid plate (5) as pivot axes. The left lattice plate (3) and the right lattice plate (4) and the left lattice plate (3) and the right lattice plate (4) and the left lattice plate (3) and right At the lower end of the lattice plate (4) , there are provided flanges (30) and (40) with claws extending forward or backward, and the left lattice plate (3) and the right lattice plate (4) are the rear lattice plates. (5) and the left lattice plate (3) and the right lattice plate (4) are moved in the front-rear direction to form the bottom lattice plate (1) . anti a metal wire to the hook (30) (40) and is engaged detachably locked, left grid plate (3) and right grid plate lift of (4) In transport for folding a container that,
The lower end portions of the front lattice plate (2) and the rear lattice plate (5) are bent or curved inward to form curved bottom portions (20) and (50), respectively, and the maximum width of the leg portion (60) is set to the lattice. By making it smaller than the unit width dimension, when folding and loading, the flange (65) of each leg (60) of the upper container fits into the lattice of the bent bottom (20) (50) in the lower container. And hold each leg (60) of the upper container by the metal wire (90) (91) (92) constituting the three sides of the lattice of the bent bottom (20) (50), in all horizontal directions Folding container for transport, characterized by preventing slippage .

At the lower four corner positions of the bottom grid plate (1) so as to cross obliquely with respect to the base frame (6) in plan view, the end of the base frame (6) and the bottom grid plate (1) made of metal The folding container for transportation according to claim 1 , wherein a guide frame (7) is fixed to the wire .