JP3894677B2

JP3894677B2 - Plastic pallet

Info

Publication number: JP3894677B2
Application number: JP35765198A
Authority: JP
Inventors: 潤朗杉原
Original assignee: Dainippon Ink and Chemicals Co Ltd
Current assignee: DIC Corp
Priority date: 1998-12-16
Filing date: 1998-12-16
Publication date: 2007-03-22
Anticipated expiration: 2018-12-16
Also published as: JP2000177735A

Description

【０００１】
【発明が属する技術分野】
本発明は、種々の物品を運搬する際に好適に使用することができる一体成形合成樹脂製パレットに関する。
【０００２】
【従来の技術】
種々の物品を運搬する際に使用される合成樹脂製パレットに於いて、例えば実公平７−５２０１８号公報には、フォーク挿入孔の入口付近の強度を向上させる為に、隅部の筒状桁と中間部の筒状桁との間で表面部に縦横に交差したリブを設けるとともに隅部の筒状桁及び中間部の筒状桁に沿って補強縁を設けた合成樹脂製パレットが知られている。
【０００３】
しかし、かかる補強縁を有するパレットは、該補強縁が比較的小さいため強度が十分でない。また、該補強縁が交差リブの全面に形成されると埃が溜まり易く、しかも水洗いの際に穴が開いていないため水はけが悪いという問題がある。
【０００４】
【発明が解決しようとする課題】
本発明は、軽量のパレットであっても、フォーク挿入孔の入口付近の強度を更に向上させ、しかも埃の溜まりが無く水洗いの際に水はけがよい一体成形合成樹脂製パレットを提供する。
【０００５】
【課題を解決するための手段】
本発明は、表面部材と、裏面部材と、該表面部材及び該裏面部材を連結する隅部に形成された隅部の筒状桁と、周辺の中間部に形成された中間部の筒状桁と、中央部に形成された中央部の筒状桁とが一体に成形されるとともに、筒状桁の間にフォーク挿入孔が井の字状に形成された一体成形合成樹脂製パレットに於いて、
（１）該隅部の筒状桁と該中間部の筒状桁との間の表面部材には、フォーク挿入方向に延びた複数の縦リブとフォーク挿入方向と直交する方向に延びた複数の横リブとが形成され、
（２）該複数の縦リブと該複数の横リブとによる区画部分は開口とされ、
（３）該隅部の筒状桁及び該中間部の筒状桁に接する該区画部分の下面部には、開口部がフォーク挿入孔側に向いたコの字状の補強リブが、該隅部の筒状桁及び該中間部の筒状桁に連結して形成され、
（４）該コの字状の補強リブは、桁縁板状補強部とリブ縁板状補強部からなり、
（５）該桁縁板状補強部は該リブ縁板状補強部より幅広とされており、
且つ
（６）該コの字状の補強リブの下面部は、該縦リブ及び該横リブの下面部と面一とされている
ことを特徴とする一体成形合成樹脂製パレットに関する。
【０００６】
さらに、上述した一体成形合成樹脂製パレットにおいて、該桁縁板状補強部の幅が、該区画部分のフォーク挿入方向に対して直交する方向の全幅に対して、３０〜４０％とされている。
【０００７】
また、上述した一体成形合成樹脂製パレットにおいて、該コの字状の補強リブの開口部の平面視したときの面積が、該区画部分の平面視したときの面積に対して、２０〜４０％とされている。
【０００８】
【発明の実施の形態】
以下、図面に従い本発明に係わる一体成形合成樹脂製パレットの好適な実施の形態について説明する。
【０００９】
図１は本発明に係わる合成樹脂製パレットの実施の一形態を示す平面図であり、図２は図１に示した一体成形合成樹脂製パレットの底面図であり、図３は図１に示した一体成形合成樹脂製パレットの正面図であり、図４は図１に示した一体成形合成樹脂製パレットの側面図であり、図５は図１に於ける線Ａ−Ａに沿った断面図であり、図６は図１に於ける線Ｂ−Ｂに沿った断面図及び部分拡大図であり、図７は図１に於ける線Ｃ−Ｃに沿った断面図であり、図８は図１に示した一体成形合成樹脂製パレットの一部破断部分斜視図であり、また図９は縦リブと横リブとによる区画部分にコの字状の補強リブが形成されていることを示す図１の一体成形合成樹脂製パレットの部分平面図である。
【００１０】
本発明に係わる一体成形合成樹脂製パレットは、表面部材１と、裏面部材２と、表面部材１及び裏面部材２を連結する隅部に形成された隅部の筒状桁３と、周辺の中間部に形成された中間部の筒状桁４と、中央部に形成された中央部の筒状桁５とが一体に成形されるとともに筒状桁３、４、５の間にフォーク挿入孔６が井の字状に形成されている。
【００１１】
隅部の筒状桁３と中間部の筒状桁４との間に於いて、表面部材１にフォーク挿入方向に延びた縦リブ１１と、フォーク挿入方向と直交する方向に延びた横リブ１２とが形成され、隅部の筒状桁３及び中間部の筒状桁４に沿って下面部が縦リブ１１及び横リブ１２の下面部と面一とされた、コの字状の補強リブ１３が形成されている。かかるコの字状の補強リブ１３は隅部の筒状桁３及び中間部の筒状桁４に接する縦リブ１１と横リブ１２とによる区画部分に開口部がフォーク挿入孔側に向いた状態で隅部の筒状桁３及び中間部の筒状桁４に連結して形成されている。
【００１２】
また、該補強リブ１３は、隅部の筒状桁３及び中間部の筒状桁４と該隅部の筒状桁３及び中間部の筒状桁４に隣接する縦リブ１１との間で横リブ１２の下端に沿って桁縁板状補強部１３ａと連なったリブ縁板状補強部１３ｂとから形成されている。フォーク挿入方向に延びた縦リブ１１は断面がＩ字状で、且つフォーク挿入方向と直交する方向に延びた横リブ１２は断面が逆Ｔ字状となっていてもよい。
【００１３】
桁縁板状補強部１３ａ及びリブ縁板状補強部１３ｂは、厚さを２０乃至５０ｍｍ、幅を３０乃至８０ｍｍとすることが好ましい。かかるリブ縁板状補強部１３ｂの幅は断面が逆Ｔ字状となっている横リブ１２の水平部の部分よりも幅広くなっている。
【００１４】
かかるコの字状の補強リブは隅部の筒状桁３及び中間部の筒状桁４に沿って縦リブ１１と横リブ１２とによる各区画部分に形成されるのが好ましいが、その一部の区画部分には形成されていなくともよい。
【００１５】
本発明のパレットでは、コの字状の補強リブが隅部の筒状桁及び中間部の筒状桁に連結され、各筒状桁から開口部までの該補強リブの幅、例えば図９に示すａが縦リブと横リブとの区画部分のフォークの挿入と垂直方向の全幅、例えば図９のＸに対して３０〜４０％となるようにするのが好ましく、該幅が縦リブと横リブとの区画部分のフォークの挿入と垂直方向の全幅に対して３２〜３７％がより好ましい。各筒状桁から開口部までの該補強リブの幅が上記の範囲であれば適度の強度を与えることができる。
【００１６】
本発明のパレットでは、コの字状の補強リブのフォーク挿入方向の部分、例えば図９に示すｂが縦リブと横リブとの区画部分のフォークの挿入方向の全幅、例えば図９に示すＹに対して好ましくは３５〜７０％、より好ましくは４０〜６５％であり、この範囲であれば適度の強度を与えることができる。
【００１７】
また、本発明のパレットでは、コの字状の補強リブの開口部が筒状桁と縦リブと横リブとで形成される区画部分の２０〜４０％となるようにするのが好ましい。かかる開口部が上記の大きさであると、水洗いをした場合に水はけがよく、しかも埃が溜まりにくく、更にパレットの軽量化に寄与するというメリットをもたらす。
【００１８】
本発明のパレットにおいては、隅部の筒状桁３と中間部の筒状桁４との間に於いて、裏面部２に裏面に縦リブ２１及び横リブ２２が設けられた板状部２３が形成され、該板状部２３の両側縁に沿ってそれぞれ下段板状部２４が形成され、且つ該下段板状部２４上にそれぞれ複数の傾斜リブ２５が形成されているのが好ましい。
【００１９】
隅部の筒状桁３の内部に於いて、表面部材１に前後方向に延びた桟３１ａが形成されるとともに裏面部材２に桟３１ａと上下に重なり合わない位置で同じく前後方向に延びた桟３２ａが形成され、且つ表面部材１に左右方向に延びた桟３１ｂが形成されるとともに裏面部材２に桟３１ｂと上下に重なり合わない位置で同じく左右方向に延びた桟３２ｂが形成されているのがパレットの強度を向上せしめるので好ましい。
【００２０】
中間部の筒状桁４の内部に於いて、表面部材１に両側のフォーク挿入孔６方向に延びた桟４１が形成されるとともに裏面部材２に桟４１と上下に重なり合わない位置で同じく両側のフォーク挿入孔６方向に延びた桟４２が形成され、且つ桟４１及び桟４２と直交する仕切板４３が形成されているのがパレットの強度を向上せしめるので好ましい。
【００２１】
中央部の筒状桁５の内部に於いて、表面部材１に左右方向に延びた桟５１ａが形成されるとともに裏面部材２に桟５１ａと上下に重なり合わない位置で同じく左右方向に延びた桟５２ａが形成され、且つ表面部材１に前後の桁壁から前後方向に途中まで延びた桟５１ｂが形成されるとともに裏面部材２に桟５１ｂと上下に重なり合わない位置で同じく前後の桁壁から前後方向に途中まで延びた桟５２ｂが形成されている。中央部の筒状桁５内には、桟５１ａ及び桟５２ａと直交する方向に仕切板５３が形成されているのがパレットの強度を向上せしめるので好ましい。
【００２２】
フォーク挿入孔６が交差する部分に於いて、表面部材１に縦横に交差した桟１４が形成されるとともに裏面部材２に大きな開口部２６が形成されている。
【００２３】
中間部の筒状桁４と中央部の筒状桁５との間に於いて、表面部材１に中間部の筒状桁４と中央部の筒状桁５とを連結する桟１７が形成されるとともに裏面部材２に桟１７と上下に重なり合わない位置で中間部の筒状桁４と中央部の筒状桁５とを連結する桟２７が形成されているのがパレットの強度を向上せしめるので好ましい。裏面部材２に形成された桟２７の内で開口部２６の周辺に位置する桟２７には、板状部２７ａと複数の傾斜リブ２７ｂとが設けられているのがパレットの強度を向上せしめるので好ましい。
【００２４】
合成樹脂製パレットは、ポリエチレン、ポリプロピレン等の合成樹脂によって形成することができ、表面部材１に形成される縦リブ１１、横リブ１２、桁縁板状補強部１３ａ、リブ縁板状補強部１３ｂと、裏面部材２に形成される板状部２３、縦リブ２１、横リブ２２、下段板状部２４、傾斜リブ２５とを除いて空間を介して上下に重なり合うアンダーカット部分が存在しない為、側方から表面部材１に形成される縦リブ１１、横リブ１２、桁縁板状補強部１３ａ、リブ縁板状補強部１３ｂと、裏面部材２に形成される板状部２３、縦リブ２１、横リブ２２、下段板状部２４、傾斜リブ２５との間に入り込む金型ブロックと、合成樹脂製パレットの表側に接触する金型ブロックと、合成樹脂製パレットの裏側に接触する金型ブロックとによって一体に射出成形することができる。
【００２５】
【発明の効果】
本発明に係わる一体成形合成樹脂製パレットは、隅部の筒状桁３と中間部の筒状桁４との間に於いて、表面部材１にフォーク挿入方向に延びた縦リブ１１と、フォーク挿入方向と直交する方向に延びた横リブ１２とが形成され、隅部の筒状桁３及び中間部の筒状桁４に沿って下面部が縦リブ１１及び横リブ１２の下面部と面一とされた補強リブ、即ち桁縁板状補強部１３ａ、且つ隅部の筒状桁３及び中間部の筒状桁４と該隅部の筒状桁３及び中間部の筒状桁４に隣接する縦リブ１１との間で横リブ１２の下端に沿って桁縁板状補強部１３ａと連なったリブ縁板状補強部１３ｂが形成されていることにより、フォーク挿入孔６の入口付近が大きな強度を有している。
【００２６】
また、本発明に係わる一体成形合成樹脂製パレットに於いては、縦リブ１１又は横リブ１２を断面が逆Ｔ字状リブとすることにより、フォーク挿入孔６の入口付近の強度を更に大きくすることができる。
【００２７】
また、本発明に係わる一体成形合成樹脂製パレットに於いては、隅部の筒状桁３と中間部の筒状桁４との間に於いて、裏面部材２に裏面に縦リブ２１及び横リブ２２が設けられた板状部２３を形成することにより、フォーク挿入孔６の入口付近の強度を更に大きくすることができる。
【００２８】
また、本発明に係わる一体成形合成樹脂製パレットに於いては、隅部の筒状桁３と中間部の筒状桁４との間に於いて、裏面部材２に板状部２３を形成するとともに該板状部２３の両側縁に沿って複数の傾斜リブ２５が設けられた下段板状部２４を形成し、且つ開口部２６の周辺に複数の傾斜リブ２７ｂと板状部２７ａとが設けられた桟２７を形成することにより、ハンドリフターの作業が容易である上に、合成樹脂製パレット上に紙袋を載せて多段に積み重ねた際に紙袋が破損することを防止することができる。
【図面の簡単な説明】
【図１】本発明に係わる一体成形合成樹脂製パレットの実施の一形態を示す平面図である。
【図２】図１に示した一体成形合成樹脂製パレットの底面図である。
【図３】図１に示した一体成形合成樹脂製パレットの正面図である。
【図４】図１に示した一体成形合成樹脂製パレットの側面図である。
【図５】図１に於ける線Ａ−Ａに沿った断面図である。
【図６】図１に於ける線Ｂ−Ｂに沿った断面図及び部分拡大図である。
【図７】図１に於ける線Ｃ−Ｃに沿った断面図である。
【図８】図１に示した一体成形合成樹脂製パレットの一部破断部分斜視図である。
【図９】縦リブと横リブとによる区画部分にコの字状の補強リブが形成されていることを示す図１の一体成形合成樹脂製パレットの部分平面図である。
【符号の説明】
１表面部材
１１縦リブ
１２横リブ
１３補強リブ
１３ａ桁縁板状補強部
１３ｂ横リブ縁板状補強部
１４開口部
２裏面部材
２１縦リブ
２２横リブ
２３板状部
２４下段板状部
２５傾斜リブ
２６開口部
２７桟
２７ａ板状部
２７ｂ傾斜リブ
３隅部の筒状桁
４中間部の筒状桁
５中央部の筒状桁
６フォーク挿入孔[0001]
[Technical field to which the invention belongs]
The present invention relates to an integrally molded synthetic resin pallet that can be suitably used for transporting various articles.
[0002]
[Prior art]
In a plastic pallet used for transporting various articles, for example, Japanese Utility Model Publication No. 7-52018 discloses a cylindrical girder at a corner in order to improve the strength near the entrance of a fork insertion hole. Synthetic resin pallets with ribs crossing the surface in the vertical and horizontal directions on the surface and between the intermediate cylindrical girder and reinforcing edges along the cylindrical girder at the corner and the cylindrical girder at the intermediate part are known. ing.
[0003]
However, a pallet having such a reinforcing edge is not strong enough because the reinforcing edge is relatively small. Further, when the reinforcing edge is formed on the entire surface of the cross rib, there is a problem that dust is easily collected and that water is not drained because a hole is not opened during washing.
[0004]
[Problems to be solved by the invention]
The present invention provides an integrally molded synthetic resin pallet that can further improve the strength near the entrance of the fork insertion hole, even if it is a lightweight pallet, and that is free from dust accumulation and drains when washed with water.
[0005]
[Means for Solving the Problems]
The present invention includes a surface member, and the bottom member, a tubular girder corner portion formed in a corner portion connecting the surface member and the rear surface member, an intermediate portion formed in an intermediate portion of the peripheral of the tubular spar, with a tubular girder of the central portion which is formed in the central portion is integrally formed, the fork insertion holes made integrally molded synthetic resin formed into shaped well between the tubular digit In the palette
(1) A plurality of vertical ribs extending in the fork insertion direction and a plurality of vertical ribs extending in the direction perpendicular to the fork insertion direction are formed on the surface member between the cylindrical girders at the corners and the cylindrical girders at the intermediate portion. A lateral rib is formed ,
(2) A partition portion formed by the plurality of vertical ribs and the plurality of horizontal ribs is an opening,
(3) A U-shaped reinforcing rib whose opening is directed to the fork insertion hole side is provided on the bottom surface of the partition portion in contact with the cylindrical girder at the corner and the cylindrical girder at the intermediate portion. It is formed by connecting to the cylindrical girder of the part and the cylindrical girder of the intermediate part,
(4) The U-shaped reinforcing rib comprises a girder plate-shaped reinforcing portion and a rib-edged plate-shaped reinforcing portion,
(5) The girder plate-like reinforcing portion is wider than the rib-edge plate-like reinforcing portion,
and
(6) The present invention relates to an integrally molded synthetic resin pallet characterized in that the lower surface portion of the U-shaped reinforcing rib is flush with the lower surface portions of the vertical and horizontal ribs .
[0006]
Furthermore, in the integrally molded synthetic resin pallet described above, the width of the spar-plate reinforcing portion is 30 to 40% with respect to the entire width of the partition portion in the direction orthogonal to the fork insertion direction. .
[0007]
Moreover, in the integrally molded synthetic resin pallet described above, the area of the opening of the U-shaped reinforcing rib when viewed in plan is 20 to 40% with respect to the area of the partition portion when viewed in plan. It is said that.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an integrally molded synthetic resin pallet according to the present invention will be described with reference to the drawings.
[0009]
1 is a plan view showing an embodiment of a synthetic resin pallet according to the present invention, FIG. 2 is a bottom view of the integrally molded synthetic resin pallet shown in FIG. 1, and FIG. 3 is shown in FIG. 4 is a front view of the integrally molded synthetic resin pallet, FIG. 4 is a side view of the integrally molded synthetic resin pallet shown in FIG. 1, and FIG. 5 is a cross-sectional view taken along line AA in FIG. 6 is a sectional view and a partially enlarged view taken along the line BB in FIG. 1, FIG. 7 is a sectional view taken along the line CC in FIG. 1, and FIG. FIG. 9 is a partially broken partial perspective view of the integrally molded synthetic resin pallet shown in FIG. 1, and FIG. 9 shows that U-shaped reinforcing ribs are formed in the sections formed by vertical ribs and horizontal ribs. FIG. 2 is a partial plan view of the integrally molded synthetic resin pallet of FIG. 1.
[0010]
Integrally molded synthetic resin pallet according to the present invention, the surface member 1, a back member (2), a tubular girder 3 corners formed in a corner portion connecting the surface member 1 and the back surface member (2) The intermediate cylindrical girder 4 formed in the peripheral middle part and the central cylindrical girder 5 formed in the central part are integrally formed and between the cylindrical girder 3, 4, 5 A fork insertion hole 6 is formed in a well shape.
[0011]
In between the cylindrical digit 4 of the tubular beam (3) and the intermediate portion of the corner portion, and the vertical ribs 11 extending in the fork insertion direction in the surface member 1, the transverse ribs extending in a direction perpendicular to a fork insertion direction The U-shaped reinforcement is formed so that the lower surface portion is flush with the lower surface portions of the vertical rib 11 and the horizontal rib 12 along the cylindrical beam 3 at the corner and the cylindrical beam 4 at the middle. Ribs 13 are formed. The U-shaped reinforcing rib 13 is in a state where the opening portion is directed to the fork insertion hole side in a partition portion formed by the vertical rib 11 and the horizontal rib 12 that are in contact with the cylindrical beam 3 at the corner and the cylindrical beam 4 at the intermediate portion. The cylindrical girder 3 at the corner and the cylindrical girder 4 at the middle are connected to each other.
[0012]
The reinforcing ribs 13 are formed between the cylindrical girders 3 and 4 at the corners and the vertical ribs 11 adjacent to the cylindrical girders 3 at the corners and the cylindrical girders 4 at the middle. A rib edge plate-like reinforcing portion 13b is formed along the lower end of the lateral rib 12 and is connected to the spar edge plate-like reinforcing portion 13a. The longitudinal ribs 11 extending in the fork insertion direction may have an I-shaped cross section, and the lateral ribs 12 extending in the direction perpendicular to the fork insertion direction may have an inverted T-shaped section.
[0013]
The girder plate reinforcement 13a and the rib edge reinforcement 13b preferably have a thickness of 20 to 50 mm and a width of 30 to 80 mm. The width of such a rib edge shaped reinforcing portion 13b is made wider than the portion of the horizontal portion of the transverse ribs 12 in cross section has a inverted T-shape.
[0014]
Such a U-shaped reinforcing rib is preferably formed in each partition portion by the vertical rib 11 and the horizontal rib 12 along the cylindrical girder 3 at the corner and the cylindrical girder 4 at the middle. It does not need to be formed in the partition part of a part.
[0015]
In the pallet of the present invention, the U-shaped reinforcing ribs are connected to the cylindrical girders at the corners and the intermediate cylindrical girders, and the width of the reinforcing ribs from each cylindrical girder to the opening, for example, in FIG. It is preferable that a shown in FIG. 9 is a full width in the vertical direction of the fork inserted into the partition portion between the vertical rib and the horizontal rib, for example, 30 to 40% with respect to X in FIG. More preferably, it is 32 to 37% with respect to the total width in the vertical direction of the fork inserted into the partition portion with the rib. If the width of the reinforcing rib from each cylindrical girder to the opening is in the above range, an appropriate strength can be given.
[0016]
In the pallet of the present invention, the portion in the fork insertion direction of the U-shaped reinforcing rib, for example, b shown in FIG. 9 is the full width in the fork insertion direction of the partition portion of the vertical rib and the horizontal rib, for example, Y shown in FIG. Preferably, it is 35-70%, More preferably, it is 40-65%, and moderate intensity | strength can be given if it is this range.
[0017]
Moreover, in the pallet of this invention, it is preferable that the opening part of a U-shaped reinforcement rib becomes 20 to 40% of the division part formed with a cylindrical girder, a vertical rib, and a horizontal rib. When such an opening has the above-mentioned size, it is advantageous in that it is well drained when washed with water, and dust does not collect easily, and further contributes to weight reduction of the pallet.
[0018]
In the pallet of the present invention, a plate-like portion 23 in which vertical ribs 21 and horizontal ribs 22 are provided on the back surface 2 on the back surface 2 between the cylindrical beam 3 at the corner and the cylindrical beam 4 at the intermediate portion. It is preferable that lower plate-like portions 24 are formed along both side edges of the plate-like portion 23, and a plurality of inclined ribs 25 are formed on the lower plate-like portion 24, respectively.
[0019]
In the inside of the corner portion of the tubular beam (3), extend in the same longitudinal direction at a position not overlapping vertically with the bars 31a to the rear surface member (2) together with the crosspiece 31a that extends in the longitudinal direction in the surface member 1 is formed and bars 32a are formed, and bar 32b similarly extends in the left-right direction at a position not overlapping vertically with the crosspiece 31b on the back surface member (2) together with the crosspiece 31b extending in the lateral direction in the surface member 1 is formed form It is preferable to improve the strength of the pallet.
[0020]
In the interior of the middle portion of the tubular girder 4, at a position where the bar 41 does not overlap vertically on the back member (2) together with the crosspiece 41 extending on both sides of the fork insertion holes 6 direction in the surface member 1 is formed Similarly, it is preferable to form the crosspieces 42 extending in the direction of the fork insertion holes 6 on both sides and to form the crosspieces 41 and the partition plates 43 orthogonal to the crosspieces 42 in order to improve the strength of the pallet.
[0021]
In the cylindrical digit 5 of the central part, likewise extends in horizontal direction at a position not overlapping vertically with the bars 51a to the rear surface member (2) together with the crosspiece 51a extending in the lateral direction in the surface member 1 is formed and bars 52a are formed, and the front and rear surface member (1) from the digit walls also before and after in a position not overlapping vertically with the crosspiece 51b on the back surface member (2) together with the crosspiece 51b extending partway are formed in the longitudinal direction A crosspiece 52b extending partway in the front-rear direction from the girder wall is formed. A partition plate 53 is preferably formed in the cylindrical girder 5 at the center in a direction orthogonal to the crosspiece 51a and the crosspiece 52a in order to improve the strength of the pallet.
[0022]
In the portion where the fork insertion holes 6 intersect, large opening 26 on the rear surface member 2 is formed with bars 14 intersecting lengthwise and crosswise on the surface member 1 is formed.
[0023]
In between the cylindrical digit 5 of the tubular girder 4 and the central portion of the intermediate section, bar 17 for connecting the tubular girder 5 of the tubular girder 4 and the central portion of the intermediate portion in the surface member 1 is formed the strength of the pallet of crosspiece 27 connecting the tubular girder 5 of the tubular girder 4 and the central portion of the intermediate portion at a position not overlapping vertically with the bars 17 on the rear surface member 2 is formed with the Since it improves, it is preferable. The crosspiece 27 located around the opening 26 within the crosspieces 27 formed on the rear surface member (2), of improving the strength of the pallet that the plate-like portion 27a and a plurality of inclined ribs 27b are provided Therefore, it is preferable.
[0024]
Plastic pallets, polyethylene, can be formed of a synthetic resin such as polypropylene, longitudinal ribs 11 formed on the surface member 1, the horizontal ribs 12, digit edge plate reinforcement portion 13a, the rib edge plate reinforcement portion plate-like portion 23 which is formed and 13b, the rear surface member (2), longitudinal ribs 21, lateral ribs 22, the lower plate portion 24, there is no undercut portion overlapping vertically through the space except for the inclined rib 25 Therefore, the vertical ribs 11 formed on the surface member 1 from the side, transverse ribs 12, digit edge plate reinforcement portion 13a, a rib edge shaped reinforcing portion 13b, the plate-like portion 23 formed on the rear surface member (2) , A mold block that enters between the vertical rib 21, the horizontal rib 22, the lower plate-like portion 24, and the inclined rib 25, a mold block that contacts the front side of the synthetic resin pallet, and a back side of the synthetic resin pallet Depending on the mold block It can be injection molded in one piece.
[0025]
【The invention's effect】
Integrally molded synthetic resin pallet according to the present invention, at between the cylindrical beam (3) and the tubular girder 4 in the middle of the corner, the vertical ribs 11 extending in the fork insertion direction in the surface member 1, The horizontal ribs 12 extending in the direction perpendicular to the fork insertion direction are formed, and the lower ribs are formed along the cylindrical girders 3 at the corners and the cylindrical girders 4 at the intermediate portions, and the lower ribs and the lower ribs of the horizontal ribs 12. Reinforced ribs that are flush with each other, that is, the girder plate-shaped reinforcing portion 13a, the cylindrical girder 3 at the corner and the cylindrical girder 4 at the middle, and the cylindrical girder 3 at the corner and the cylindrical girder 4 at the middle. In the vicinity of the entrance of the fork insertion hole 6, the rib edge plate-like reinforcing portion 13 b is formed along the lower end of the lateral rib 12 with the longitudinal rib 11 adjacent to the rib rib plate-like reinforcing portion 13 a. Has great strength.
[0026]
Further, in the integrally molded synthetic resin pallet according to the present invention, the strength of the vicinity of the entrance of the fork insertion hole 6 is further increased by making the vertical rib 11 or the horizontal rib 12 a reverse T-shaped cross section. be able to.
[0027]
Also, at the integrally molded synthetic resin pallet according to the present invention, in between the tubular girder 3 and the tubular girder 4 in the middle of the corner portion, the longitudinal ribs 21 and the rear surface to the rear surface member (2) By forming the plate-like portion 23 provided with the lateral rib 22, the strength in the vicinity of the entrance of the fork insertion hole 6 can be further increased.
[0028]
Further, in the integrally molded synthetic resin pallet according to the present invention, at between the cylindrical digit 4 of the tubular beam (3) and the intermediate portion of the corner portion, forming a plate-like portion 23 on the rear surface member (2) In addition, a lower plate-like portion 24 provided with a plurality of inclined ribs 25 is formed along both side edges of the plate-like portion 23, and a plurality of inclined ribs 27 b and plate-like portions 27 a are formed around the opening 26. By forming the provided cross 27, the work of the hand lifter is easy, and it is possible to prevent the paper bags from being damaged when the paper bags are stacked on the synthetic resin pallet and stacked in multiple stages.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of an integrally molded synthetic resin pallet according to the present invention.
FIG. 2 is a bottom view of the integrally molded synthetic resin pallet shown in FIG.
3 is a front view of the integrally molded synthetic resin pallet shown in FIG. 1. FIG.
4 is a side view of the integrally molded synthetic resin pallet shown in FIG. 1. FIG.
FIG. 5 is a cross-sectional view taken along line AA in FIG.
6 is a cross-sectional view and a partially enlarged view taken along line BB in FIG. 1. FIG .
7 is a cross-sectional view taken along line CC in FIG. 1. FIG.
8 is a partially broken partial perspective view of the integrally molded synthetic resin pallet shown in FIG. 1; FIG.
FIG. 9 is a partial plan view of the integrally molded synthetic resin pallet of FIG. 1 showing that a U-shaped reinforcing rib is formed in a partition portion formed by vertical ribs and horizontal ribs.
[Explanation of symbols]
1 surface member 11 longitudinal ribs 12 transverse ribs 13 reinforcing ribs 13a-digit edge shaped reinforcing portion 13b transverse rib edge shaped reinforcing portion 14 opening 2 backside member 21 vertical ribs 22 lateral rib 23 plate-like portion 24 the lower plate-shaped portion 25 Inclined Rib 26 Opening 27 Cross 27a Plate 27b Inclined Rib 3 Cylindrical Girder 4 Intermediate Cylindrical Girder 5 Central Cylindrical Girder 6 Fork Insertion Hole

Claims

And the surface member, and the bottom member, a tubular girder corner portion formed in a corner portion connecting the surface member and the rear surface member, the tubular girder intermediate portion formed in an intermediate portion of the peripheral When, with a tubular girder of the central portion which is formed in a central portion is molded integrally, in the integrally molded synthetic resin pallet fork insertion holes are formed in the shape of a well between the tubular digit ,
(1) A plurality of vertical ribs extending in the fork insertion direction and a plurality of vertical ribs extending in the direction perpendicular to the fork insertion direction are formed on the surface member between the cylindrical girders at the corners and the cylindrical girders at the intermediate portion. A lateral rib is formed,
(2) A partition portion formed by the plurality of vertical ribs and the plurality of horizontal ribs is an opening,
(3) A U-shaped reinforcing rib whose opening is directed to the fork insertion hole side is provided on the bottom surface of the partition portion in contact with the cylindrical girder at the corner and the cylindrical girder at the intermediate portion. It is formed by connecting to the cylindrical girder of the part and the cylindrical girder of the intermediate part,
(4) The U-shaped reinforcing rib comprises a girder plate-shaped reinforcing portion and a rib-edged plate-shaped reinforcing portion,
(5) The girder plate-like reinforcing portion is wider than the rib-edge plate-like reinforcing portion,
and
(6) The integrally molded synthetic resin pallet characterized in that the lower surface portion of the U-shaped reinforcing rib is flush with the lower surface portions of the vertical and horizontal ribs .

2. The integrally molded synthetic resin pallet according to claim 1 , wherein the width of the spar plate-shaped reinforcing portion is 30 to 40% with respect to the entire width of the partition portion in a direction orthogonal to the fork insertion direction .

3. The integral molding according to claim 1, wherein an area of the opening of the U-shaped reinforcing rib when viewed in plan is 20 to 40% with respect to an area of the partition portion when viewed in plan. Synthetic resin pallet.