JPH11310237A - Synthetic resin pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make deformation and breakage hardly occur even though a fork collides with shock resistance heightened by a method wherein the thickness of side wall is made thicker, the distance between each of crosswise reinforcing ribs is made narrower and partition walls are provided lengthwise and crosswise at the inside of support parts at areas near fork insertion ports. SOLUTION: The thickness of side wall is made thicker respectively at opening edge parts 7a and 9a on slanted or curved surface and external parts 7b and 9b than at interior parts 7c and 9c of side walls facing a fork insertion port 10 of a support 7 and a middle support 9 of a deck board 3. While the distance between each of crosswise reinforcing ribs 31 is made narrower at positions between an end edge rib 31a and adjoining opening edge ribs 31 than at positions L between each of crosswise reinforcing ribs 31, 31 at the central part, lengthwise reinforcing ribs 33a, being in parallel with lengthwise reinforcing ribs 33, are provided between the end edge rib 31a and the opening edge rib 31b. Furthermore, crosswise partition walls 35, 37 and lengthwise partition walls 39, 40 that intersect the crosswise partition walls approximately at a right angle are provided at the inside at both ends of the support 7 and the middle support 9.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、荷物の保管、運
搬の際に使用するフォークリフト用の合成樹脂製パレッ
トに係り、特にフォークリフトのフォークに対する衝撃
性に優れた合成樹脂製パレットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin pallet for a forklift used for storing and transporting luggage, and more particularly to a synthetic resin pallet excellent in impact on a fork of a forklift.

【０００２】[0002]

【従来の技術】従来、荷物の保管、運搬用の合成樹脂製
パレットは、耐腐食性、耐汚染性に優れており広く使用
されている。この種パレットは、上部デッキボードと下
部デッキボードとをその両端部及び中間部に配設した中
空構造の支柱部で連結し、支柱部と上下デッキボードで
囲まれた空間部をフォークリフトのフォークを差し込む
フォーク差込口としている。2. Description of the Related Art Conventionally, synthetic resin pallets for storing and transporting luggage have been widely used because of their excellent corrosion resistance and contamination resistance. This kind of pallet connects the upper deck board and the lower deck board with the pillars of the hollow structure arranged at both ends and the intermediate part, and the space surrounded by the pillars and the upper and lower deck boards is used for the fork of the forklift. It has a fork insertion slot.

【０００３】上記構成のフォーク差込口におけるデッキ
ボード及び支柱部は、荷物を載置したときに高荷重を受
けるばかりでなく、フォークリフトによる荷役作業中に
フォークの接触及び衝撃を受けるものである。合成樹脂
製パレットは、木製パレットに比較してフォークの衝撃
に対して破損し易いという問題がある。そこで、合成樹
脂製パレットにおいてはフォークの衝撃に対して高い強
度を持たせるためのリブ構造が提案されている。例え
ば、支柱部を補強したパレットとして、特開平９−１７
５５３４号公報、特開平４−２４２５４０号公報などに
記載のパレットがある。[0003] The deck board and the strut portion in the fork insertion port having the above structure not only receive a high load when a load is placed, but also receive a fork contact and an impact during a cargo handling operation by a forklift. Synthetic resin pallets have a problem that they are more easily damaged by a fork impact than wooden pallets. Therefore, a rib structure has been proposed for a synthetic resin pallet to have high strength against impact of a fork. For example, a pallet with reinforced support columns has been disclosed in
There is a pallet described in JP-A-5534 and JP-A-4-242540.

【０００４】[0004]

【発明が解決しようとする課題】前記公報記載のパレッ
トは、支柱部を中空構造とし、その内部に角部位置から
対角線上に中央部に向かう仕切壁と、フォークの差込方
向に沿い前記仕切壁と交差する仕切壁とを設けたもので
ある。このような構造では支柱部の角部から対角方向へ
の強度を強めることはできるものの、支柱部の直角方向
からの衝撃に対しては必ずしも充分な強度を有するとは
いえなかった。また、前記公報に記載のパレットは、い
ずれも支柱部の強度を向上させるものであるが、デッキ
ボードとの関係については考慮されていない。しかしな
がら、フォークに対する衝撃性を高めるにはデッキボー
ドのリブ構造と支柱部の構造とは互いに関係しており、
両者の関係が重要であることが分かった。そこで、この
発明は、デッキボートとの関係において支柱部の強度を
向上させ、ひいてはパレット全体として高い強度を有す
る合成樹脂製パレットを提供するものである。The pallet described in the above-mentioned publication has a hollow pillar portion, a partition wall inside the pillar portion extending diagonally from the corner portion to the center portion, and the partition wall along the fork insertion direction. A partition wall intersecting with the wall is provided. With such a structure, although the strength in the diagonal direction from the corner of the support portion can be increased, it cannot be said that the support portion necessarily has sufficient strength against an impact from the right angle direction of the support portion. Further, all of the pallets described in the above publications improve the strength of the column portion, but do not consider the relationship with the deck board. However, the rib structure of the deck board and the structure of the strut portion are related to each other in order to increase the impact resistance to the fork,
It turns out that the relationship between them is important. In view of the above, the present invention provides a synthetic resin pallet in which the strength of the support portion is improved in relation to the deck boat, and the pallet as a whole has high strength.

【０００５】[0005]

【課題を解決するための手段】この発明は上記目的を達
成するために次のような構成とした。即ち、この発明の
合成樹脂製パレットは、分割成形した上部品と下部品と
を支柱部の端面において溶着しなるパレットにおいて、
各支柱部を中空構造とするとともに、支柱部の側壁のう
ちフォーク差込口に面する開口縁部を平面において傾斜
面又は湾曲面としてフォーク差込側の外面部とともに肉
厚寸法を内面部よりも大きくし、フォーク差込方向と直
交する方向に設けた上部デッキボードの横補強リブのう
ち端縁リブと前記端縁リブに隣接しかつ平行な開口縁リ
ブの間隔を中央部における横補強リブの間隔よりも狭く
形成し、各支柱部の内部には、フォーク差込側のデッキ
ボードの端面に対して平行な横仕切壁と、前記横仕切壁
に直交する縦仕切壁とを設け、前記開口縁リブと横仕切
壁とは前記支柱部の開口縁部と連結し平面において直線
上に設けたことを特徴とする。前記端縁リブと開口縁リ
ブとの間隔を３０〜７０ｍｍとすることが好ましい。ま
た、前記支柱部内部の横仕切壁と縦仕切壁は、支柱部に
連結する連結部の肉厚を中央部の肉厚よりも大きくする
ことが好ましい。The present invention has the following configuration to achieve the above object. That is, the synthetic resin pallet of the present invention is a pallet in which an upper part and a lower part, which are separately molded, are welded to each other at the end surface of the support.
Each pillar has a hollow structure, and the opening edge of the side wall of the pillar facing the fork insertion port is formed as an inclined surface or a curved surface in a plane with the outer surface of the fork insertion side having a thickness greater than that of the inner surface. The horizontal reinforcing ribs of the upper deck board provided in the direction perpendicular to the fork insertion direction are provided with the edge ribs and the horizontal ribs adjacent to and parallel to the edge ribs at the center. Is formed narrower than the interval of, the inside of each pillar portion, a horizontal partition wall parallel to the end face of the deck board on the fork insertion side, and a vertical partition wall orthogonal to the horizontal partition wall is provided, The opening edge rib and the horizontal partition wall are connected to the opening edge of the support portion and are provided on a straight line in a plane. The distance between the edge ribs and the opening edge ribs is preferably 30 to 70 mm. Further, it is preferable that the horizontal partition wall and the vertical partition wall inside the support portion have a thickness of a connecting portion connected to the support portion larger than a thickness of a central portion.

【０００６】[0006]

【発明の実施の形態】図１〜図４は、この発明に係る二
方差し型パレットの一例を示す斜視図である。二方差し
型パレット１は、上部デッキボード３と下部デッキボー
ド５の両側端に支柱部７、その中間に中間支柱部９を設
け、前記支柱部と上下デッキボードで囲まれた空間をフ
ォーク差込口１０としている。上記パレット１は、予め
各支柱部の略中央部で水平方向に分割成形した分割面１
１によって上部デッキボードを有する上部品１３と、下
部デッキボードを有する下部品１５とを支柱部の分割面
１１において突き合わせ溶着してなり、前記各支柱部は
中空構造とされている。1 to 4 are perspective views showing an example of a two-way pallet according to the present invention. The two-sided pallet 1 is provided with a pillar 7 at both ends of an upper deck board 3 and a lower deck board 5 and an intermediate pillar 9 in the middle, and a space surrounded by the pillar and the upper and lower deck boards is forked. Entrance 10. The pallet 1 has a divided surface 1 previously formed in a horizontal direction at a substantially central portion of each pillar portion.
1, an upper part 13 having an upper deck board and a lower part 15 having a lower deck board are butted and welded on a divided surface 11 of the pillar part, and each pillar part has a hollow structure.

【０００７】上部デッキボード３は、天板３０と前記天
板３０の下面にフォーク差込方向に対して直交する横補
強リブ３１と、フォーク差込方向に対して平行な縦補強
リブ３３とからなる。縦横に設けた補強リブ３１、３３
で囲まれた部分のフォーク差込口に面する天板３０に
は、内部に侵入した異物や水を排出するために透孔を設
けてもよい。また、下部デッキボード５は、上部デッキ
ボード３とほぼ同様な構成とされており、裏返しても使
用可能とした両面使用型パレットである。従って、以下
の説明では、上部デッキボードの構成について説明し、
下部デッキボードの構成については同一符号を付してそ
の説明は省略する。The upper deck board 3 comprises a top plate 30, horizontal reinforcing ribs 31 orthogonal to the fork insertion direction on the lower surface of the top plate 30, and vertical reinforcing ribs 33 parallel to the fork insertion direction. Become. Reinforcing ribs 31 and 33 provided vertically and horizontally
The top plate 30 facing the fork insertion opening in a portion surrounded by a circle may be provided with a through hole for discharging foreign substances and water that have entered inside. The lower deck board 5 has substantially the same configuration as the upper deck board 3, and is a double-sided pallet that can be used even if it is turned over. Therefore, in the following description, the configuration of the upper deck board will be described,
The same reference numerals are given to the configuration of the lower deck board, and the description is omitted.

【０００８】両端支柱部７、７及び中間支柱部９のフォ
ーク差込口１０に面する側壁のうち、開口縁部７ａ、９
ａは、フォークの差込を容易にするために開口に向かっ
て広がるように平面において傾斜面又は湾曲面とする。
また、前記傾斜面又は湾曲面とされた開口縁部７ａ、９
ａと外面部７ｂ、９ｂの肉厚寸法は、内面部７ｃ、９ｃ
の肉厚寸法よりも大きくする。例えば、内面部７ｃ、９
ｃの肉厚寸法を６〜８ｍｍとすると、開口縁部７ａ、９
ａと外面部７ｂ、９ｂの肉厚寸法は９〜１１ｍｍとす
る。Opening edges 7a, 9 of the side walls facing the fork insertion port 10 of the both-ends supporters 7, 7 and the intermediate supporter 9 are provided.
a is an inclined surface or a curved surface in a plane so as to spread toward the opening to facilitate insertion of the fork.
In addition, the opening edges 7a, 9 formed as the inclined surfaces or the curved surfaces.
a and the outer surface portions 7b, 9b have thicknesses of the inner surface portions 7c, 9c.
Larger than the wall thickness dimension. For example, the inner surface portions 7c, 9
If the thickness of c is 6 to 8 mm, the opening edges 7a, 9
The thickness dimension of the outer surface portions 7b and 9b is 9 to 11 mm.

【０００９】横補強リブ３１のうち、デッキボードのフ
ォーク差込口の開口縁における端縁リブ３１ａと前記端
縁リブ３１ａに隣接しかつ平行な開口縁リブ３１ｂの間
隔は、中央部における横補強リブ３１、３１の間隔Ｌよ
りも狭く形成し、その間隔は３０〜７０ｍｍ、好ましく
は４５〜５５ｍｍとする。また、開口縁リブ３１ｂは、
前記傾斜面又は湾曲面に形成された開口縁部７ａ、９ａ
に平面においてほぼ中央位置で連結している。前記端縁
リブ３１ａと開口縁リブ３１ｂとの間には、前記縦補強
リブ３３と平行な縦補強リブ３３ａが設けられている。In the lateral reinforcing ribs 31, the distance between the edge rib 31a at the opening edge of the fork insertion opening of the deck board and the opening edge rib 31b adjacent to and parallel to the edge rib 31a is determined by the horizontal reinforcing rib at the center. The ribs 31, 31 are formed to be narrower than the interval L, and the interval is 30 to 70 mm, preferably 45 to 55 mm. The opening edge rib 31b is
Opening edges 7a, 9a formed on the inclined surface or the curved surface
At a substantially central position in the plane. A vertical reinforcing rib 33a parallel to the vertical reinforcing rib 33 is provided between the edge rib 31a and the opening edge rib 31b.

【００１０】前記端縁リブ３１ａの高さは、開口縁リブ
３１ｂのそれよりも低く形成されており、従って、端縁
リブ３１ａと開口縁リブ３１ｂとの間では、縦補強リブ
３３及び縦補強リブ３３ａの下面（フォーク差込口側
面）は、図３に示すように、傾斜面または湾曲面とされ
ている。The height of the edge rib 31a is lower than that of the opening edge rib 31b. Therefore, between the edge rib 31a and the opening edge rib 31b, the vertical reinforcing rib 33 and the vertical reinforcing rib 31a are provided. The lower surface (side surface of the fork insertion port) of the rib 33a is formed as an inclined surface or a curved surface as shown in FIG.

【００１１】さらに、両端支柱部７、７と中間支柱部９
の両端内部（フォーク差込側）には、デッキボードの側
面に対してほぼ平行な横仕切壁３５、３７と前記横仕切
壁３５、３７とほぼ直角に交わる縦仕切壁３９、４０と
が設けられている。前記横仕切壁３５、３７は、図４に
示すように、平面において開口縁リブ３１ｂとほぼ直線
上に形成されており、その高さは支柱部の高さと同じで
ある。両端支柱部７、７は、横仕切壁３５と縦仕切壁３
９によって隔壁状に仕切られており、中間支柱部９は横
仕切壁３７と縦仕切壁４０によって隔壁状に仕切られて
いる。Further, both end support portions 7, 7 and an intermediate support portion 9
Inside the both ends (fork insertion side), horizontal partition walls 35, 37 substantially parallel to the side surface of the deck board, and vertical partition walls 39, 40 intersecting the horizontal partition walls 35, 37 substantially at right angles are provided. Have been. As shown in FIG. 4, the horizontal partition walls 35 and 37 are formed substantially linearly with the opening edge rib 31b in a plane, and the height thereof is the same as the height of the support portion. Both end support parts 7, 7 are composed of a horizontal partition wall 35 and a vertical partition wall 3.
The intermediate support 9 is partitioned by a horizontal partition wall 37 and a vertical partition wall 40 into a partition wall shape.

【００１２】前記横仕切壁３５、３７は、傾斜面又は湾
曲面に形成された開口縁部７ａ、９ａのほぼ中央に位置
し、横仕切壁３５、３７が開口縁リブ３１ｂと直線上に
一体に形成することによって、開口縁部７ａ、９ａの部
分では略十字状構造となるとともに、縦仕切壁３９、４
０が連続していることによって、フォークが差込方向と
平行に衝突し、あるいは斜め方向から衝突しても変形や
破損することなく衝撃性に優れた構造とすることができ
る。しかも、フォークが衝突する開口縁部７ａ、９ａと
外面部７ｂ、９ｂの肉厚寸法は、内面部７ｃ、９ｃの肉
厚寸法よりも大きく形成したから、前記略十字状構造と
相まって一層衝撃に耐える高い強度を有することにな
る。The horizontal partition walls 35, 37 are located substantially at the center of the opening edges 7a, 9a formed on the inclined surface or the curved surface, and the horizontal partition walls 35, 37 are linearly integrated with the opening edge rib 31b. , The opening edge portions 7a and 9a have a substantially cross-shaped structure, and the vertical partition walls 39, 4
Since the 0s are continuous, even if the fork collides in parallel with the insertion direction or collides from an oblique direction, a structure excellent in impact resistance can be obtained without deformation or breakage. Moreover, the thickness of the opening edges 7a, 9a and the outer surfaces 7b, 9b against which the fork collides is formed larger than the thickness of the inner surfaces 7c, 9c. It will have high strength to withstand.

【００１３】また、横仕切壁３５、３７及び縦仕切壁３
９、４０は、支柱部の側壁に連結する連結部３５ａ、３
９ａ、３７ａ、４０ａの肉厚Ｔを中央部３５ｂ、３９
ｂ、３７ｂ、４０ｂの肉厚ｔよりも厚く形成する。この
ように連結部３５ａ、３９ａ、３７ａ、４０ａの肉厚Ｔ
を厚肉とすることによって強度を高めることができると
ともに、中央部３５ｂ、３９ｂ、３７ｂ、４０ｂの肉厚
ｔを薄肉に形成することによってパレット全体の軽量化
を図り、さらに弾力化による衝撃吸収を高めることがで
きる。Further, the horizontal partition walls 35 and 37 and the vertical partition wall 3
9, 40 are connecting portions 35a, 3 connected to the side wall of the support portion.
The thickness T of 9a, 37a, 40a is adjusted to the central portions 35b, 39.
It is formed thicker than the thickness t of b, 37b, 40b. Thus, the thickness T of the connecting portions 35a, 39a, 37a, 40a
The thickness of the central portion 35b, 39b, 37b, and 40b can be increased by increasing the thickness of the pallet, and the thickness of the central portion 35b, 39b, 37b, and 40b can be reduced to reduce the weight of the entire pallet, and furthermore, to absorb impact by elasticity. Can be enhanced.

【００１４】また、前記パレット１の上端縁及び下端縁
には、各支柱部の外面よりもわずかに水平方向に突出し
た突出部１７によって縁取られている。このように、パ
レットの周縁を水平方向に突出した突出部１７で縁取る
ことによって、パレットを立てた状態で保管運搬し、あ
るいは地面を引きずっても支柱部の外面が地面と接触し
ないから支柱部が損傷することがない。The upper and lower edges of the pallet 1 are bordered by projecting portions 17 slightly projecting horizontally from the outer surfaces of the columns. In this way, the periphery of the pallet is bordered by the projecting portion 17 projecting in the horizontal direction, so that the pallet can be stored and transported in an upright state, or even if the ground is dragged, the outer surface of the pillar does not come into contact with the ground. Is not damaged.

【００１５】上記実施形態では二方差し型の両面使用パ
レットについて説明したが、片面使用のパレットでもよ
いのは勿論、四方差し型パレットでもよい。また、下部
デッキボードの構成は必ずしも上記実施形態に限定され
るものではない。In the above embodiment, a two-sided pallet for use on both sides has been described. However, a pallet for single-sided use may be used, and a four-sided pallet may be used. Further, the configuration of the lower deck board is not necessarily limited to the above embodiment.

【００１６】[0016]

【発明の効果】この発明に係る合成樹脂製パレットは、
デッキボードの横補強リブのうち端縁リブと開口縁リブ
の間隔を中央部よりも狭め、支柱部のフォーク差込側の
外面部とフォーク差込口の開口縁部との肉厚を厚くする
ばかりでなく、支柱内部の横仕切壁とデッキボードの開
口縁リブとを平面において直線上に設け、さらに直交す
る縦仕切壁を設ける構成によって、耐衝撃性に優れた構
造となり、フォークが衝突しても容易に変形したり破損
したりすることがない。The synthetic resin pallet according to the present invention
In the horizontal reinforcing ribs of the deck board, the distance between the edge ribs and the opening edge ribs is made narrower than the center portion, and the thickness of the outer surface of the support portion on the fork insertion side and the thickness of the opening edge of the fork insertion opening are increased. Not only that, the horizontal partition wall inside the column and the opening edge rib of the deck board are provided on a straight line in a plane, and furthermore, the vertical partition wall is provided orthogonally, resulting in a structure with excellent impact resistance, and the fork collides. However, it is not easily deformed or damaged.

【図面の簡単な説明】[Brief description of the drawings]

【図１】この発明の実施形態におけるパレットの正面図
である。FIG. 1 is a front view of a pallet according to an embodiment of the present invention.

【図２】同じくパレットの斜視図である。FIG. 2 is a perspective view of the pallet.

【図３】フォーク差込口における拡大縦断面図である。FIG. 3 is an enlarged vertical sectional view of a fork insertion opening.

【図４】上部デッキボードの下面を示す拡大横断面図で
ある。FIG. 4 is an enlarged cross-sectional view showing a lower surface of an upper deck board.

【符号の説明】[Explanation of symbols]

１ パレット ３ 上部デッキボード ５ 下部デッキボード ７ 両端支柱部 ９ 中間支柱部 １０ フォーク差込口 １１ 分割面 １３ 上部品 １５ 下部品 １７ 突出部 ３０ 天板 ３１ 横補強リブ ３１ａ 端縁リブ ３１ｂ 開口縁リブ ３３、３３ａ 縦補強リブ ３５、３７ 横仕切壁 ３９、４０ 縦仕切壁 ３５ａ、３７ａ、３９ａ、４０ａ 仕切壁の連結部 ３５ｂ、３７ｂ、３９ｂ、４０ｂ 仕切壁の中央部 DESCRIPTION OF SYMBOLS 1 Pallet 3 Upper deck board 5 Lower deck board 7 Both-ends support part 9 Intermediate support part 10 Fork insertion port 11 Division surface 13 Upper part 15 Lower part 17 Projection part 30 Top plate 31 Lateral reinforcement rib 31a Edge rib 31b Opening edge rib 33, 33a Vertical reinforcing ribs 35, 37 Horizontal partition 39, 40 Vertical partition 35a, 37a, 39a, 40a Connecting part 35b, 37b, 39b, 40b of partition wall Central part of partition wall

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 分割成形した上部品と下部品とを支柱部
の端面において溶着しなるパレットにおいて、各支柱部
を中空構造とするとともに、支柱部の側壁のうちフォー
ク差込口に面する開口縁部を平面において傾斜面又は湾
曲面としてフォーク差込側の外面部とともに肉厚寸法を
内面部よりも大きくし、フォーク差込方向と直交する方
向に設けた上部デッキボードの横補強リブのうち端縁リ
ブと前記端縁リブに隣接しかつ平行な開口縁リブの間隔
を中央部における横補強リブの間隔よりも狭く形成し、
各支柱部の内部には、フォーク差込側のデッキボードの
端面に対して平行な横仕切壁と、前記横仕切壁に直交す
る縦仕切壁とを設け、前記開口縁リブと横仕切壁とは前
記支柱部の開口縁部と連結し平面において直線上に設け
たことを特徴とする合成樹脂製パレット。1. A pallet in which an upper part and a lower part, which are separately formed, are welded to each other at an end face of a column, wherein each column has a hollow structure and an opening of a side wall of the column facing a fork insertion port. The edge portion is a flat surface with an inclined surface or a curved surface, the thickness of which is larger than the inner surface portion together with the outer surface portion on the fork insertion side, and of the lateral reinforcing ribs of the upper deck board provided in a direction orthogonal to the fork insertion direction. The gap between the edge rib and the opening edge rib adjacent to and parallel to the edge rib is formed smaller than the gap between the lateral reinforcing ribs at the center,
Inside each support portion, a horizontal partition wall parallel to the end surface of the deck board on the fork insertion side and a vertical partition wall orthogonal to the horizontal partition wall are provided, and the opening edge rib and the horizontal partition wall are provided. Is a pallet made of synthetic resin, which is connected to an opening edge of the support portion and is provided on a straight line in a plane. 【請求項２】 前記端縁リブと開口縁リブとの間隔を３
０〜７０ｍｍとしたことを特徴とする請求項１記載の合
成樹脂製パレット。2. The distance between the edge rib and the opening edge rib is three.
The synthetic resin pallet according to claim 1, wherein the pallet has a thickness of 0 to 70 mm. 【請求項３】 前記支柱部内部の横仕切壁と縦仕切壁
は、支柱部に連結する連結部の肉厚を中央部の肉厚より
も大きくしたことを特徴とする請求項１または請求項２
記載の合成樹脂製パレット。3. The horizontal partition wall and the vertical partition wall inside the support portion, wherein a thickness of a connecting portion connected to the support portion is larger than a thickness of a central portion. 2
The synthetic resin pallet as described.