JP3573720B2

JP3573720B2 - Cardboard pallets

Info

Publication number: JP3573720B2
Application number: JP2001070451A
Authority: JP
Inventors: 滋章伊藤; 克也大澤
Original assignee: 浅野段ボール株式会社
Priority date: 2001-03-13
Filing date: 2001-03-13
Publication date: 2004-10-06
Anticipated expiration: 2021-03-13
Also published as: JP2002274538A

Description

【０００１】
【発明の属する技術分野】
本発明は、段ボール製パレットに関するものである。
【０００２】
【従来の技術】
従来の段ボール製パレットは、多数枚の段ボールを接着剤で積層一体した桁材の複数本を所要間隔をおいて平行に配置してこれらの上下面に直接デッキ材を接着固定したものが普通であった。
【０００３】
【発明が解決しようとする課題】
ところが、このような従来のものにあっては、桁材間におけるデッキ面に荷重を受けた場合にデッキ材が歪み損傷する虞があり、また、多数枚の段ボールを接着剤で積層一体した桁材は製造に手数を要するうえ重量が重くなる問題があった。
【０００４】
【課題を解決するための手段】
前記の課題を解決するためになされた本発明の段ボール製パレットは、段ボールよりなる桁材の複数本を主材として組立てられたベース材の上面に段ボールよりなるデッキ材を接着固定した段ボール製パレットであって、前記したベース材として、上面に横梁材係合用の凹欠部を配設してある四角筒状の桁材を所要の間隔をおいて配置して、これら桁材を前記した凹欠部に部分的に係合させて直交方向に配置した段ボールよりなる複数本の横梁材により格子状に連結することにより、上面が各桁材と横梁材による水平なデッキ支持面に形成されるとともに、横梁材の下面が各桁材間から挿入されるフォーク爪の支持面に形成されたものを用いたものとし、また、前記四角筒状の桁材は、上板部の左右両側下方に折曲線を介して外側脚板部を連設するとともに該外側脚板部の下端に内向きの折曲線を介して前記上板部の略半分幅の底板部を連設してその先端に折曲線を介して上向きの補助脚板部を立設し、この桁本体の上部には前記上板部と外側脚板部と補助脚板部の上部を部分的に切欠した凹欠部を所要の間隔をおいて複数個設けた段ボール素板を前記した各折曲線より折曲して四角筒状にまとめたものとして、かつ、前記凹欠部の上部先端縁には折曲線を介して舌片が連設されていてこの舌片に設けた切欠部により補助脚板部を挟持させるとともに、上板部にはスリット孔が設けて、このスリット孔から連結板を挿入して該連結板に設けた切込部に補助脚板部を挟持させ、また、前記連結板を中央の２条の折曲線により切欠部を設けた２枚の連結片部を折り返して形成したものであって、さらに、前記四角筒状の桁材を形成する段ボール素板を、中央に間隔をおいて折曲線を設けてその間に上板部を形成し、該折曲線から外側箇所に折曲線を設けて折曲線と折曲線との間に外側脚板部を形成し、該折曲線から前記上板部の半分幅の箇所に折曲線を設けて前記上板部の半分幅の底板部を形成し、該折曲線の外側に折曲線により脚板本体部と折返脚板部とよりなる２枚構造とする補助脚板部を形成し、また、前記外側脚板部には四角状の抜き孔をその一側孔縁部を前記折曲線に合致させて所要の間隔をおいて複数個設け、対向する外側脚板部に設けた両抜き孔の端部同士間の上板部に折曲線を設け、対向する折曲線と折曲線との中間部に前記抜き孔と連通させた切断線又は抜き取り部を形成して折曲線と切断線との間に形成される舌片に切断線の先端中央から切欠部を設け、また、上板部に連結板挿入用の横方向にスリットを所要間隔をもって複数個設けて、また、前記折曲線 ) により脚板本体部と折返脚板部とより二重構造とする補助脚板部に折曲線を中心に前記抜き孔に対応させて二倍幅の抜き孔を穿設して折り返し時に凹欠部形成用の切欠段部を形成するものとし、さらに、補助脚板部には折曲線を中心に前記にスリットに対応させて折り返し時に連結板の頭部を嵌合させる切欠部形成用の横長孔を形成したものとしたことを特徴とするものを請求項１に係る発明とする。
【０００５】
そして、前記した請求項１に係る発明における段ボールよりなるベース材の横梁材として、桁材の凹欠部に対応する幅と高さを有するように１枚の段ボール素板を断面形状が扁平な四角形となるように折曲線より巻回して積層重合して形成したものを用いたものを請求項２に係る発明とする。
【０００６】
【０００７】
【発明の実施の形態】
次に、本発明の好ましい実施の形態を図面に基づき説明する。
１は段ボールよりなる四角筒状の桁材１０の複数本を主材として組立てられたベース材であって、本発明に係る段ボール製パレットはこのベース材１の上面に段ボールよりなるデッキ材３を接着固定して構成されている。前記したベース材１は上面に横梁材係合用の凹欠部１５を配設してある四角筒状の桁材１０の複数本を所要の間隔をおいて平行に配置し、これら桁材１を前記した凹欠部１５に部分的に係合接着して直交方向に配置した段ボールよりなる複数本の横梁材２により格子状に連結することによって、上面が各桁材１と横梁材２による水平なデッキ支持面に形成されるとともに、横梁材２の下面が各桁材１０、１０間から挿入されるフォーク爪の支持面に形成されたものとしてあり、このベース材１の上面の水平なデッキ支持面に段ボールよりなるデッキ材３を接着固定してある。
【０００８】
このように構成された段ボール製パレットは、複数本の桁材１０と横梁材２とにより組み込まれた格子状のベース材１の上面に各桁材１と横梁材２とによって形成された水平なデッキ支持面にデッキ材３を接着固定したものであるから、平面荷重及び桁間荷重は勿論のこと集中荷重にも対応できる充分な強度を持つものである。また、デッキ材３上に重量物をのせてフォークリフトにより運ぶ際に桁材１０、１０間に挿入されるフォーク爪は、デッキ材３の下面に直接接触することなく、横梁材２の下面を支えることとなるので、デッキ材３が歪んで積載荷物が落下する虞も無いものである。さらに、横梁材２が桁材１０の凹欠部１５に係合されたうえ接着固定されているので、横梁材２の位置決めも容易なうえ強固に連結できて製作が容易なものものである。
【０００９】
前記した桁材１は、図２に示すように、上板部１１の左右両側下方に折曲線１１ａ、１１ａを介して外側脚板部１２、１２を連設するとともに、外側脚板部１２、１２の下端に内向きに折曲線１２ａ、１２ａを介して前記上板部１１の半分幅の底板部１３、１３を連設し、また、両底板部１３、１３の先端縁上方には折曲線１３ａ、１３ａを介して補助脚板部１４、１４を立設して四角筒状とし、さらにこのような四角筒状体の上部には前記上板部１１と外側脚板部１２、１２と補助脚板部１４、１４の上部を一部切欠した凹欠部１５を所要の間隔をおいて実施例では４個設けてある。また、凹欠部１５の上部先端縁には舌片１５１を折曲して連設してこの舌片１５１に設けた切欠部１５２により前記補助脚板部１４、１４を挟持させるとともに、上板部１１にスリット１１１を設けてこのスリット１１１から連結板４を挿入して該連結板４に設けた切欠部４１により補助脚板部１４、１４を挟持させて嵌合させることにより両補助脚板部１４、１４が分離することなく一体に連結させてまとめあげている。なお、スリット１１１は図示のように上板部１１の全幅にわたり設けてあり、連結板４の両端面が外側脚板部１２、１２の内壁面と当接して四角筒状の桁材１０の保形性を高めるものとしている。
【００１０】
このようにベース材１の主材となる四角筒状の桁材１０はその中央に設けた補助脚板部１４、１４が底板部１３、１３の先端縁上方に折曲線１３ａ、１３ａを介して連設されたものであるから、別材を組み込み形成する必要がなくて製造が容易であり、また、補助脚板部１４、１４は舌片１５１に設けた切込部１５２と連結板４に設けた切込部４１とにより一体に連結されているので、荷重を受けても開拡する虞のないものとしてあり、補助脚板部１４、１４同士を接着材により接着固定する場合において、両補助脚板部１４、１４を強固に当接させて確実に接着固定させることができるものである。
【００１１】
また、この桁材１０は図３に示すような打ち抜き加工した四角状の段ボール素板を折曲して製造するものである。即ち、この段ボール素板は中央に間隔をおいて折曲線１１ａ、１１ａを設けてその間に上板部１１を形成し、該折曲線１１ａ、１１ａから外側箇所に折曲線１２ａ、１２ａを設けて折曲線１１ａと折曲線１２ａとの間に外側脚板部１２、１２を形成し、該折曲線１２ａ、１２ａから前記上板部１１の半分幅の箇所に折曲線１３ａ、１３ａを設けて前記上板部１１の半分幅の底板部１３、１３を形成し、該折曲線１３ａ、１３ａの外側に折曲線１４ａ、１４ａにより脚板本体部１４１と折返脚板部１４２とよりなる２枚構造とする補助脚板部１４、１４を形成している。なお、折曲線１４ａ、１４ａの所要箇所を太線で示したとおり切断として容易に折り返し可能としている。
【００１２】
さらに、前記外側脚板部１２、１２には四角状の抜き孔１２１、１２１をその一側孔縁部１２２を前記折曲線１１ａ、１１ａに合致させて所要の間隔をおいて複数個即ち４個宛設け、対向する外側脚板部１２、１２に設けた両抜き孔１２１、１２１の端部同士間の上板部１１に折曲線１５１ａを設け、対向する折曲線１５１ａと折曲線１５１ａとの中間部に前記抜き孔１２１と連通させた切断線１５３又は抜き取り部１５４を形成して折曲線１５１ａと切断線１５３との間に形成される舌片１５１に切断線１５３の先端中央から切欠部１５２を設け、さらに、上板部１１に連結板４挿入用の横方向にスリット１１１を所要間隔をもって複数個即ち４個設けている。
【００１３】
また、前記折曲線１４ａ、１４ａにより脚板本体部１４１と折返脚板部１４２とより二重構造とする補助脚板部１４、１４に折曲線１４ａを中心に前記抜き孔１２１に対応させて二倍幅の抜き孔１４４を穿設して折り返し時に凹欠部１５形成用の切欠段部１５ａを形成するものとし、さらに、補助脚板部１４、１４には折曲線１４ａを中心に前記にスリット１１１対応させて折り返し時に連結板４の頭部４ａを嵌合させる切欠部形成用の横長孔１４５を形成している。
【００１４】
そして、このように打ち抜き加工した段ボール素板を、図４に示すように、先ず両端部の折返脚板部１４２を脚板本体部１４１の内面側に折り重なるように折曲線１４ａを介して３６０°折曲させて先端に抜き孔１４４により切欠段部１５ａを形成するとともに横長孔１４５により切欠部を形成した二重構造の補助脚板部１４を形成する。次に、図５に示すように折曲線１３ａを介して補助脚板部１４を底板部１３から内向きに９０°折曲させるとともに底板部１３を折曲線１２ａを介して外側脚板部１２から内向きに９０°折曲させて、外側脚板部１２を折曲線１１ａを介して上板部１１から内向きに９０°折曲させて、該外側脚板部１２を上板部１１の両側に下方に形成するとともに上板部１１に対向させて底板部１３、１３を形成してに前記底板部１３、１３から内向きに９０°折曲させた補助脚板部１４、１４同士を当接させて該補助脚板部１４、１４の先端面により上板部１１を支持させて図６に示すような中央に上下方向の補助脚板部１４を設けた四角筒状の桁材１０とされる。
【００１５】
その後、この桁材１０の上板部１１の各舌片１５１を下方に向け９０°折曲させて、切断線１５３先端中央から設けた切欠部１５２を設けた舌片１５１にあっては該切欠部１５２により補助脚板部１４、１４の切欠段部１５ａの基端上部を挟持して該切欠段部１５ａと前記両外側脚板部１２の抜き孔１２１により凹欠部１５を設けた桁材１として、図７に示すように上板部１１に設けたスリット１１１から連結板４を挿入して該連結板４の頭部４ａを補助脚板部１４、１４の上部に横長孔１４５を折り返して形成した切欠部１４６に嵌合させたうえ該連結板４の下端に設けた該切欠部４１に補助脚板部１４、１４を挟持させて前記舌片１５１の切欠部１５２と共に両補助脚板部１４、１４同士を一体とさせる。
【００１６】
【００１７】
このようにして得られた桁材１０はその複数本を等間隔に配置しておき、隣合う各桁材１の凹欠部１５に一部を係合させた状態として横梁材２を直交方向に配置し、該横梁材２の上面部２１を桁材１０の上板部１１と同一面として係合接着することにより固定して格子状のベース材１とし、このベース材１の各桁材１０の上板部１１及び各横梁材２の上面部２１により形成される水平なデッキ支持面に段ボールよりなるデッキ材３を接着固定することによって段ボール製パレットとすればよいものである。
【００１８】
また、前記した連結板４は、図７及び図８に示すように、中央の２条の折曲線４１ａ、４１ａにより切欠部４１を設けた２枚の連結片部４２を折り返して形成して折返箇所の弾発力で前記挿入孔１１１からデッキ３を接着固定する組立前にあっても抜け出ることのないようにしている。
【００１９】
さらに、段ボールよりなる横梁材２は、前記した桁材１０の凹欠部１５に対応する幅と高さを有するように１枚の段ボール素板をその断面形状が扁平な四角形となるように折曲線より巻回して積層重合して形成したものであって、図示するものは図９に示すように、芯板部２０１の側縁に切込線入りの折曲線２０１ａを介して折返板部２０２を連設するとともに、該折返板部２０２から順次折曲線２０２ａを介して重合板部２０２を連設した段ボール素板を、断面形状が扁平な四角状となるように巻回して積層重合して形成することが製造が容易で好ましいが、多数の段ボール切断片を桁材１０の凹欠部１５に対応する幅と高さを有するように接着材で一体としたものであってもよい。
【００２０】
【発明の効果】
本発明は前記した実施例による説明から明らかなように、桁材と横梁材とを桁材の凹欠部において組み込んで上面が各桁材と横梁材の上面による水平なデッキ支持面に形成するとともに、横梁材の下面が各桁材間から挿入されるフォーク爪の支持面に形成された格子状のベース材とし、このベース材の水平なデッキ支持面にデッキ材を接着固定したものであるから、デッキ面に重量物をのせられた場合にもデッキ材が歪むことが無く、また、フォーク爪はデッキ材の下面に直接接触することがなく強度的に優れた横梁材の下面を支えることとなるので、デッキ材は強い強度を必要とせず、しかも、桁材は打ち抜き加工した１枚の段ボール素板を折曲すればよいので、多数枚の段ボールを接着剤で積層一体した桁材を使用したものに比べて製造に手数を要しないうえに接着剤の使用量も少なくできて安価に製造できるものである。また、段ボールよりなる四角筒状の桁材の内部に補助脚板部を立設してあるものは、上下方向の荷重がこの桁材の外側脚板部のみならず補助脚板部と外側脚板部の双方により支えられることとなるので、桁材の強度はより優れたものとなって耐久性の点で一層好ましいものとなる。
従って、本発明は従来の段ボール製パレットの問題点を解決したものとして業界にもたらす益大なものである。
【図面の簡単な説明】
【図１】本発明に係る段ボール製パレットの実施の形態を示す分解斜視図である。
【図２】本発明に用いられた桁材の実施の形態を示す斜視図である。
【図３】桁材組立用の段ボール素板を示す平面図である。
【図４】桁材の組立工程を示す斜視図である。
【図５】桁材の組立工程を示す斜視図である。
【図６】桁材の組立工程を示す斜視図である。
【図７】桁材の組立工程を示す斜視図である。
【図８】連結板組立用の段ボール素板を示す平面図である。
【図９】横梁材組立用の段ボール素板を示す平面図である。
【符号の説明】
１ベース材
２横梁材
３デッキ材
４連結板
10 四角筒状の桁材
11 上板部
12 外側脚板部
13 底板部
14 補助脚板部
15 凹欠部
41 切欠部
41a 折曲線
42 連結片部
111 スリット孔
151 舌片
152 切欠部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cardboard palette.
[0002]
[Prior art]
Conventional corrugated cardboard pallets usually consist of a number of corrugated cardboard laminated with an adhesive, a plurality of girder members arranged in parallel at a required interval, and a deck material directly adhered and fixed to the upper and lower surfaces of these. there were.
[0003]
[Problems to be solved by the invention]
However, in such a conventional device, when a load is applied to the deck surface between the girder materials, the deck material may be distorted and damaged, and a girder obtained by laminating and integrating a large number of cardboards with an adhesive. The material has the problem that it takes time and effort to manufacture and becomes heavy.
[0004]
[Means for Solving the Problems]
A corrugated cardboard pallet of the present invention made to solve the above-mentioned problem is a corrugated cardboard pallet in which a deck material made of corrugated cardboard is bonded and fixed to an upper surface of a base material assembled using a plurality of girder members made of corrugated cardboard as a main material. A square tubular girder having a concave notch for engaging a cross beam on the upper surface is disposed at a predetermined interval as the base member, and these girder members are formed as recesses. The upper surface is formed as a horizontal deck support surface by each girder material and the cross beam material by being connected in a lattice shape with a plurality of cross beam materials made of cardboard arranged in the orthogonal direction by partially engaging with the notch. Along with this, the lower surface of the cross beam is formed on the supporting surface of the fork claw inserted from between the respective girder members, and the rectangular tube-shaped girder member is located below the left and right sides of the upper plate portion. Link the outer leg plate through the folding curve At the same time, a bottom plate of approximately half the width of the upper plate is continuously connected to the lower end of the outer leg plate via an inward folding curve, and an upward auxiliary leg plate is erected at the end of the bottom plate via the folding curve. On the upper part of the girder main body, each of the above-mentioned folded corrugated cardboards is provided with a plurality of concave notches, which are partially cut out from the upper plate, the outer leg plate, and the upper part of the auxiliary leg plate at a required interval. The tongue is bent from the curve to form a square tube, and a tongue is connected to the upper end edge of the recess through a bend. A slit hole is provided in the upper plate portion, a connecting plate is inserted from the slit hole, and an auxiliary leg plate portion is held in a notch provided in the connecting plate. in one formed by folding back the connecting piece of the two having a notch by bending lines of two rows of central Further, a corrugated cardboard plate forming the square tubular girder is provided with a fold curve at an interval in the center, an upper plate portion is formed therebetween, and a fold curve is formed from the fold curve to an outer portion. Forming an outer leg plate portion between the folding curves, forming a bottom plate portion having a half width of the upper plate portion by providing a folding curve at a half width of the upper plate portion from the folding curve. An auxiliary leg plate portion having a two-piece structure including a leg plate main body portion and a folded leg plate portion is formed outside the folding curve by a folding curve, and a square hole is formed in the outer leg plate portion at one side hole. A plurality of edges are provided at predetermined intervals so as to match the folding curve, and a folding curve is provided in an upper plate portion between the ends of both punched holes provided in the opposed outer leg plate portions, and a folding curve facing the folding curve is provided. A cutting line or a cut-out portion communicating with the cutout hole is formed at an intermediate portion between the fold curve and the cut line, and formed between the fold curve and the cut line. A notch is provided from the center of the tip of the cutting line on the tongue piece to be cut, and a plurality of slits are provided in the upper plate portion in the transverse direction for connecting plate insertion at a required interval, and the leg plate body portion by the folding curve ). A double-width punched hole is formed in the auxiliary leg plate that has a double structure with the folded-back leg plate in correspondence with the above-mentioned hole centering on the folding curve to form a notch step for forming a concave notch when folded. Further, the auxiliary leg plate portion is formed with a horizontally long hole for forming a cutout portion for fitting the head of the connecting plate at the time of turning back, corresponding to the slit, centering on the folding curve. This is defined as the invention according to claim 1.
[0005]
And, as the cross beam of the base material made of the corrugated cardboard according to the invention according to claim 1, one corrugated cardboard plate having a flat cross section is formed so as to have a width and a height corresponding to the concave notch of the girder material. The present invention according to claim 2 uses what is formed by winding from a folding curve to form a quadrangle and stacking and polymerizing .
[0006]
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a base material assembled by using a plurality of square tubular girder members 10 made of corrugated cardboard as a main material. A corrugated cardboard pallet according to the present invention includes a deck material 3 made of corrugated cardboard on the upper surface of the base material 1. It is configured by bonding and fixing. In the base member 1 described above, a plurality of square tubular girder members 10 each having a recessed portion 15 for engaging a cross beam member on the upper surface are arranged in parallel at a predetermined interval, and these girder members 1 are attached. A plurality of cross beams 2 made of corrugated cardboard, which are partially engaged and adhered to the recesses 15 and are connected in a lattice pattern by a plurality of cross beams 2 arranged in an orthogonal direction, so that the upper surface is horizontal by each girder 1 and the cross beams 2. And the lower surface of the cross beam 2 is formed on the support surface of the fork pawl inserted from between the beam members 10 and 10, and the horizontal deck on the upper surface of the base material 1 is formed. A deck material 3 made of cardboard is bonded and fixed to the support surface.
[0008]
The pallet made of corrugated cardboard thus configured has a horizontal shape formed by the girder members 1 and the cross beams 2 on the upper surface of the lattice-like base member 1 incorporated by the plurality of girder members 10 and the cross beams 2. Since the deck material 3 is bonded and fixed to the deck support surface, it has sufficient strength to cope with not only a plane load and a load between girders but also a concentrated load. Further, when a heavy object is placed on the deck member 3 and transported by a forklift, the fork claws inserted between the beam members 10 and 10 support the lower surface of the cross beam member 2 without directly contacting the lower surface of the deck member 3. Therefore, there is no danger that the deck material 3 is distorted and the load is dropped. Furthermore, since the cross beam member 2 is engaged with the recessed portion 15 of the beam member 10 and is adhesively fixed, the positioning of the cross beam member 2 is easy, and the cross beam member 2 can be firmly connected, so that it is easy to manufacture.
[0009]
As shown in FIG. 2, the above-mentioned girder member 1 has outer leg plate portions 12, 12 continuously connected via folding curves 11 a, 11 a below right and left sides of the upper plate portion 11. At the lower end, bottom plates 13, 13 having a half width of the upper plate 11 are continuously provided inwardly through folding curves 12a, 12a. Auxiliary leg plate portions 14 and 14 are erected through 13a to form a square tube, and the upper plate portion 11, the outer leg plate portions 12, 12 and the auxiliary leg plate portion 14, In the embodiment, four concave portions 15 in which the upper part of 14 is partially notched are provided at required intervals. Further, a tongue piece 151 is bent and connected to the upper end edge of the concave notch part 15 so that the auxiliary leg plate parts 14, 14 are sandwiched by a notch part 152 provided in the tongue piece 151 and an upper plate part. 11, a slit 111 is provided, the connecting plate 4 is inserted from the slit 111, and the auxiliary leg plate portions 14, 14 are sandwiched and fitted by the cutout portions 41 provided on the connecting plate 4, whereby the two auxiliary leg plate portions 14 are fitted. 14 are integrally connected without being separated. The slit 111 is provided over the entire width of the upper plate portion 11 as shown in the figure, and both end surfaces of the connecting plate 4 are in contact with the inner wall surfaces of the outer leg plate portions 12, 12 to keep the square tubular girder 10 in shape. It is said to enhance the nature.
[0010]
In this manner, the square tubular girder member 10 which is the main member of the base member 1 has the auxiliary leg plate portions 14, 14 provided at the center thereof connected to the upper end edges of the bottom plate portions 13, 13 via folding curves 13a, 13a. Since it is provided, there is no need to incorporate and form a separate material, and the manufacture is easy. Further, the auxiliary leg plate portions 14 are provided on the cutout portion 152 provided on the tongue piece 151 and the connecting plate 4. Since they are integrally connected to the notch portion 41, there is no danger that they will expand even if a load is applied. When the auxiliary leg plate portions 14 and 14 are bonded and fixed with an adhesive, the two auxiliary leg plate portions are used. 14, 14 can be firmly brought into contact with each other to securely adhere and fix them.
[0011]
Further, this girder material 10 is manufactured by bending a square corrugated cardboard plate that has been punched as shown in FIG. That is, this corrugated cardboard is provided with folding curves 11a, 11a at an interval in the center, forming an upper plate portion 11 between them, and providing folding curves 12a, 12a outside the folding curves 11a, 11a. The outer leg plate portions 12 are formed between the curved line 11a and the curved line 12a, and the curved line 13a is provided at a half width of the upper plate portion 11 from the curved line 12a. Auxiliary leg plate portion 14 which has bottom plate portions 13 and 13 having a half width of 11 and is formed of a leg plate main portion 141 and a folded leg plate portion 142 by folding lines 14a and 14a outside folding lines 13a and 13a. , 14 are formed. Note that you are easily foldable as cutting as shown fold line 14a, a required portion of 14a by a thick line.
[0012]
Further, the outer leg plate portions 12, 12 have a plurality of squared holes 121, 121 of which one side edge 122 is aligned with the folding curves 11a, 11a at a required interval, that is, a plurality of four holes. A bent curve 151a is provided in the upper plate portion 11 between the ends of both the holes 121, 121 provided in the opposed outer leg plate portions 12, 12, and an intermediate portion between the opposed bent curve 151a and the bent curve 151a. A notch 152 is formed from the center of the tip of the cutting line 153 in a tongue piece 151 formed between the fold curve 151a and the cutting line 153 by forming a cutting line 153 or a cutout 154 communicating with the punching hole 121, Furthermore, a plurality of slits 111, that is, four slits 111 are provided in the upper plate portion 11 at a required interval in the horizontal direction for inserting the connecting plate 4.
[0013]
Further, the auxiliary leg plate portions 14, 14 having a double structure with the leg plate body portion 141 and the folded leg plate portion 142 by the folding curves 14a, 14a have double widths corresponding to the cutout holes 121 around the folding curve 14a. A cutout step 15a for forming the concave notch 15 is formed at the time of turning back by forming a cutout hole 144. Further, the auxiliary leg plate sections 14, 14 are formed so as to correspond to the slits 111 with the folding curve 14a as a center. A horizontally long hole 145 for forming a notch for fitting the head 4a of the connecting plate 4 at the time of folding is formed.
[0014]
Then, as shown in FIG. 4, the corrugated cardboard blank thus punched out is bent 360 ° via the folding curve 14 a so that the folded leg plate portions 142 at both ends are folded over the inner surface side of the leg plate body portion 141. Then, the auxiliary leg plate portion 14 having a double structure in which the cutout step 15a is formed at the tip by the cutout hole 144 and the cutout portion is formed by the horizontally long hole 145 is formed. Next, as shown in FIG. 5, the auxiliary leg plate portion 14 is bent 90 ° inward from the bottom plate portion 13 through the folding curve 13a, and the bottom plate portion 13 is bent inward from the outer leg plate portion 12 through the folding curve 12a. The outer leg plate 12 is bent 90 ° inward from the upper plate 11 via the folding curve 11a to form the outer leg plate 12 on both sides of the upper plate 11 below. At the same time, the auxiliary leg plate portions 14, 14, which are formed so as to face the upper plate portion 11 to form the bottom plate portions 13, and are bent inward by 90 ° from the bottom plate portions 13, are brought into contact with each other to assist the auxiliary The upper plate portion 11 is supported by the distal end surfaces of the leg plate portions 14, 14 to form a square tubular girder member 10 having a vertical auxiliary leg plate portion 14 provided at the center as shown in FIG.
[0015]
Thereafter, each tongue piece 151 of the upper plate portion 11 of the girder member 10 is bent downward by 90 °, and in the tongue piece 151 provided with a notch portion 152 provided from the center of the cutting line 153, the notch portion is provided. As a girder material 1 in which the upper end of the notch step 15a of the auxiliary leg plate portions 14 and 14 is sandwiched by the portion 152, and the notch 15 is provided by the notch step 15a and the cutout hole 121 of both outer leg plate portions 12. As shown in FIG. 7, the connecting plate 4 is inserted from the slit 111 provided in the upper plate portion 11, and the head 4a of the connecting plate 4 is formed by folding the oblong hole 145 above the auxiliary leg plate portions 14, 14. The auxiliary leg plates 14, 14 are fitted to the notch 146 and the notches 41 provided at the lower end of the connecting plate 4 sandwich the auxiliary leg plates 14, 14 together with the notch 152 of the tongue piece 151. Are united.
[0016]
[0017]
A plurality of the beam members 10 obtained in this manner are arranged at equal intervals, and a part of the beam members 10 is engaged with the concave notch 15 of each adjacent beam member 1 and the cross beam member 2 is moved in the orthogonal direction. And the upper surface portion 21 of the cross beam member 2 is fixed to the upper plate portion 11 of the spar member 10 by engaging and bonding the upper surface portion 21 and the lattice member base member 1. The cardboard pallet may be formed by bonding and fixing the deck material 3 made of cardboard to a horizontal deck support surface formed by the upper plate portion 11 and the upper surface portion 21 of each cross beam member 2.
[0018]
Further, as shown in FIGS. 7 and 8, the connecting plate 4 is formed by folding two connecting piece portions 42 provided with the cutout portions 41 by two central folding curves 41a, 41a. The elasticity of the location prevents the deck 3 from coming out even before the assembly where the deck 3 is bonded and fixed through the insertion hole 111 .
[0019]
Further, the cross beam member 2 made of corrugated cardboard is formed by folding a single corrugated cardboard plate so as to have a width and a height corresponding to the recess 15 of the beam member 10 so that the cross-sectional shape thereof becomes a flat square. As shown in FIG. 9, the folded plate portion 202 is formed by winding from the curve and laminated and superimposed, and as shown in FIG. A corrugated cardboard plate in which the overlapping plate portion 202 is continuously connected from the folded plate portion 202 via the folding curve 202a sequentially is wound so that the cross-sectional shape becomes a flat quadrangular shape, and is laminated and polymerized. Although it is preferable to form it easily because it is easy to manufacture, a large number of cut pieces of corrugated cardboard may be integrated with an adhesive so as to have a width and a height corresponding to the recessed portion 15 of the girder material 10.
[0020]
【The invention's effect】
As is clear from the description of the above-described embodiment, the present invention incorporates a girder material and a cross beam material in a concave notch of a girder material and forms an upper surface on a horizontal deck support surface formed by the upper surfaces of the respective girder materials and the cross beam material. In addition, the lower surface of the cross beam material is a lattice-like base material formed on the support surface of the fork claw inserted from between each girder material, and the deck material is bonded and fixed to the horizontal deck support surface of this base material. Therefore, even if a heavy object is placed on the deck surface, the deck material is not distorted, and the fork claws do not directly contact the lower surface of the deck material and support the lower surface of the cross beam material which is excellent in strength Therefore, the deck material does not need strong strength, and the girder material can be obtained by bending a single punched corrugated cardboard plate. Manufactured compared to used Those which can be produced inexpensively made smaller amount of glue on top does not require the trouble. In addition, in the case where the auxiliary leg plate portion is erected inside a square tubular girder made of corrugated cardboard, the load in the vertical direction is not only on the outer leg plate portion of this girder material, but also on both the auxiliary leg plate portion and the outer leg plate portion. Therefore, the strength of the girder material becomes more excellent, which is more preferable in terms of durability.
Accordingly, the present invention is of great benefit to the industry as solving the problems of conventional cardboard pallets.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a cardboard pallet according to the present invention.
FIG. 2 is a perspective view showing an embodiment of a girder used in the present invention.
FIG. 3 is a plan view showing a corrugated board for assembling a girder material.
FIG. 4 is a perspective view showing a process of assembling the beam members.
FIG. 5 is a perspective view showing a step of assembling the beam members.
FIG. 6 is a perspective view showing a step of assembling the beam members.
FIG. 7 is a perspective view showing a step of assembling the beam members.
FIG. 8 is a plan view showing a cardboard blank for assembling a connecting plate.
FIG. 9 is a plan view showing a corrugated board for assembling a cross beam member.
[Explanation of symbols]
1 Base material 2 Cross beam 3 Deck material 4 Connecting plate
10 Square tube girder
11 Upper plate
12 Outer leg plate
13 Bottom plate
14 Auxiliary leg plate
15 Notch
41 Notch
41a folding curve
42 connecting piece
111 slit hole
151 Tongue Piece
152 Notch

Claims

A corrugated cardboard pallet in which a deck material (3) made of cardboard is adhered and fixed to an upper surface of a base material (1) assembled using a plurality of corrugated girder materials (10) as a main material. As 1), a square tubular girder (10) having a concave notch (15) for engaging a cross beam on the upper surface is arranged at a required interval, and these girder (10) are The upper surface is connected to each girder member (10) by being connected in a grid by a plurality of cross beams (2) made of corrugated cardboard which are partially engaged with the concave notches (15) and arranged in the orthogonal direction. Formed on the horizontal deck support surface of the cross beam (2), and the lower surface of the cross beam (2) is formed on the support surface of the fork claw inserted between the beam members (10) and (10). In addition, the square tubular girder material (10) has outer leg plate portions (12) and (12) connected via bent curves below right and left sides of the upper plate portion (11), and the outer leg plate is provided. (12), bottom plates (13) and (13) of approximately half the width of the upper plate (11) are connected to each other via an inward bending curve at the lower end of (12), and a bending curve is formed at the tip thereof. upward auxiliary leg plate section via (14), (14) erected to an outer leg plate portion and the upper plate portion to the top of the spars (10) (11) (12), an auxiliary leg plate (12) (14), a corrugated cardboard plate provided with a plurality of concave notches (15), which are partially notched at the upper portions of (14), at predetermined intervals, is bent from each of the above-mentioned folding curves to form a square tubular shape. In addition, a tongue piece (151) is connected to the upper end edge of the concave notch (15) through a folding curve, and the notch (152) provided in the tongue piece (151) is provided. ), The auxiliary leg plate portions (14) and (14) are sandwiched, and the upper plate portion (11) is provided with a slit hole (111), and the connecting plate (4) is inserted through the slit hole (111). The notches (41) provided in the connecting plate (4) hold the auxiliary leg plate portions (14) and (14), and the connecting plate (4) is It is formed by folding two connecting pieces (42) and (42) provided with cutouts (41) according to the fold curves (41a) and (41a) , and further comprises the square tubular shape. The corrugated board forming the beam member (10) is provided with folding curves (11a) and (11a) at intervals in the center to form an upper plate portion (11) therebetween, and the folding curves (11a) and bending line from (11a) on the outer portion (12a), the outer leg plate portion between the folding line provided (12a) and (11a) and fold lines (12a) (12), to form a (12), 該折curve (12a), folding lines at positions of the half width of the upper plate portion from (12a) (11) (13a), the upper plate portion provided (13a) bottom plate portion of the half width of the (11) (13) , (13) , and a two-piece structure comprising a leg plate main body portion (141) and a folded leg plate portion (142) outside of the fold curves (13a) and (13a) by the fold curves (14a) and (14a). The auxiliary leg plate portions (14) and (14) are formed, and the outer leg plate portions (12) and (12) have square holes (121) and (121) at one side edge thereof. (122) above A plurality of holes are provided at predetermined intervals in accordance with the folding curves (11a) and (11a), and the ends of both holes (121) and (121) provided in the opposed outer leg plate portions (12) and (12). the upper plate between the parts to each other (11) folding curve (151a) provided on the opposing fold lines (151a) and said at an intermediate portion between the folding line (151a) vent holes (121) and communicated thereby cutting line ( 153) or a tongue piece (151) formed between the fold curve (151a) and the cutting line (153 ) by forming the extraction part (154) from the center of the tip of the cutting line (153) to the notch (152) In addition, a plurality of slits (111) are provided in the upper plate portion (11) in the horizontal direction for inserting the connecting plate (4 ) at required intervals, and the leg plates are formed by the folding curves (14a) and (14a) . Auxiliary leg plate portions (14) , which have a double structure with the main body portion (141) and the folded leg plate portion (142) , double the (14) corresponding to the hole (121) centering on the folding curve (14a) It shall form concave portion (15) cut-out step portion for forming a (15a) and drilled vent holes (144) of width when folded, further Auxiliary leg plate portion (14), notch for fitting the head (4a) of the connecting plate when folded in correspondence to the slit (111) in the around the folding line (14a) to (14) (4) A pallet made of corrugated cardboard, characterized in that a horizontally long hole (145) for forming is formed .

The cross-sectional shape of one corrugated board is flat so that the cross beam (2) of the base material (1) made of corrugated board has the width and height corresponding to the concave notch (15) of the girder (10). The pallet made of corrugated cardboard according to claim 1, wherein the pallet is formed by winding from a folding curve so as to form a square shape and stacking and polymerizing.