JP4326354B2 - Plastic pallet - Google Patents

Plastic pallet Download PDF

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JP4326354B2
JP4326354B2 JP2004015197A JP2004015197A JP4326354B2 JP 4326354 B2 JP4326354 B2 JP 4326354B2 JP 2004015197 A JP2004015197 A JP 2004015197A JP 2004015197 A JP2004015197 A JP 2004015197A JP 4326354 B2 JP4326354 B2 JP 4326354B2
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girder
corner
rib
synthetic resin
connecting rib
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JP2005206200A (en
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宏司 大崎
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Sanko Co Ltd
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Sanko Co Ltd
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Description

本発明は、物品の運搬、移送、保管等に使用される合成樹脂製パレットに関するものである。 The present invention relates to a synthetic resin pallet used for transportation, transfer, storage and the like of articles.

従来、上部デッキと下面デッキの四隅を連結する隅桁と、上部デッキと下面デッキの各辺部の中間を連結する中間桁と、上部デッキと下面デッキの中央部を連結する中央桁とを有するとともに、隅桁の下端部と中間桁の下端部とは、隅桁・中間桁連結桟部により連結されており、また、中間桁の下端部と中央桁の下端部とは、中間桁・中央桁連結桟部により連結されている合成樹脂製パレットが、一例として、特許文献１に開示されている。
特開２００３−１７０９３８号公報 Conventionally, it has a corner girder that connects the four corners of the upper deck and the lower deck, an intermediate girder that connects the middle of each side of the upper deck and the lower deck, and a central girder that connects the center of the upper deck and the lower deck. In addition, the lower end of the corner girder and the lower end of the intermediate girder are connected by a corner girder / intermediate girder connecting beam, and the lower end of the intermediate girder and the lower end of the central girder are intermediate girder / center. As an example, a pallet made of synthetic resin connected by a girder connecting bar is disclosed in Patent Document 1.
JP 2003-170938 A

上述した隅桁の下端部と中間桁の下端部とを連結する隅桁・中間桁連結桟部は、互いに対向する隅桁の壁面と中間桁の側面とを連結する複数の連結リブと、該連結リブと直交するとともに各連結リブを連結する交差リブとにより構成されているが、隅桁・中間桁連結桟部の強度や剛性が十分でないために、所定の間隔で配設された倉庫の棚やコンベヤ等に、合成樹脂製パレットを載置した際に、隅桁・中間桁連結桟部が下方に湾曲するという問題があった。 The above-mentioned corner girder / intermediate girder connecting beam connecting the lower end of the corner girder and the lower end of the intermediate girder includes a plurality of connecting ribs that connect the wall surfaces of the opposite corner girder and the side surface of the intermediate girder, It is composed of intersecting ribs that are orthogonal to the connecting ribs and connect the connecting ribs. However, because the strength and rigidity of the corner beam / intermediate beam connecting beam portions are not sufficient, When synthetic resin pallets are placed on shelves, conveyors, etc., there has been a problem that the corner beam / intermediate beam connecting beam bends downward.

本発明の目的は、合成樹脂製パレットの重量の増加を抑えつつ、上述した従来の合成樹脂製パレットが有する課題を解決することにある。 The objective of this invention is solving the subject which the conventional synthetic resin pallet mentioned above has, suppressing the increase in the weight of the synthetic resin pallet.

本発明は、上述した目的を達成するために、上部デッキと下部デッキとが、隅桁と中間桁と中央桁とにより連結されているとともに、隅桁の下端部と中間桁の下端部とが、隅桁・中間桁下部連結桟部により連結されており、また、中間桁の下端部と中央桁の下端部とが、中間桁・中央桁下部連結桟部により連結されており、更に、互いに直交する一対の隅桁・中間桁下部連結桟部と互いに直交する一対の中間桁・中央桁下部連結桟部とにより囲まれた開口部が形成されている合成樹脂製パレットにおいて、前記隅桁・中間桁下部連結桟部を構成する、フォーク挿通通路の入口側に位置する連結リブと前記開口部側に位置する連結リブとの間に配置されている連結リブの長さ方向に対して垂直な断面形状が、略Ｔ字状に形成されており、且つ、前記略Ｔ字状の連結リブの長さ方向中央部領域に位置する垂直部のみに、肉厚部を形成したものである。 In the present invention, in order to achieve the above-described object, the upper deck and the lower deck are connected by a corner beam, an intermediate beam, and a central beam, and the lower end portion of the corner beam and the lower end portion of the intermediate beam are connected. The lower part of the intermediate girder and the middle girder are connected by the lower girder of the middle girder and the middle girder. In a synthetic resin pallet in which an opening surrounded by a pair of orthogonal corner girders and intermediate girder lower connecting bars and a pair of intermediate girders and middle girder lower connecting bars orthogonal to each other is formed, Perpendicular to the length direction of the connecting ribs that are arranged between the connecting ribs that are located on the inlet side of the fork insertion passage and the connecting ribs that are located on the opening side, which constitute the lower girder connecting link part The cross-sectional shape is substantially T-shaped, and Only in the vertical portion positioned on the central longitudinal region of the serial substantially T-shaped connecting rib is obtained by forming a thick portion.

桁間を連結する下部連結桟部を構成する連結リブの垂直部の長さ方向中央領域に、肉厚部を形成したので、下部連結桟部の強度や剛性を高めることができ、従って、下部連結桟部の湾曲変形を防止することができるとともに、ひいては、合成樹脂製パレットの強度や剛性を向上することができる。 Since the thick part is formed in the central area in the longitudinal direction of the vertical part of the connecting rib that forms the lower connecting beam part that connects between the girders, the strength and rigidity of the lower connecting beam part can be increased. It is possible to prevent the connecting bar portion from being bent and to improve the strength and rigidity of the synthetic resin pallet.

また、桁間を連結する下部連結桟部を構成する連結リブの垂直部の長さ方向中央領域に、肉厚部を形成することにより、下部連結桟部の強度や剛性を高めることができるので、肉厚部以外の連結リブの厚さや該連結リブと交差する交差リブの厚さを薄くすることができ、従って、合成樹脂製パレットの重量の増加を抑えることができる。 In addition, since the thick portion is formed in the central region in the longitudinal direction of the vertical portion of the connecting rib that configures the lower connecting beam portion that connects between the girders, the strength and rigidity of the lower connecting beam portion can be increased. The thickness of the connecting rib other than the thick portion and the thickness of the intersecting rib intersecting with the connecting rib can be reduced, and therefore the increase in the weight of the synthetic resin pallet can be suppressed.

以下に、本発明の実施例について説明するが、本発明の趣旨を越えない限り、何ら、本実施例に限定されるものではない。 Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

合成樹脂製パレットは、上部デッキ１と下部デッキ２の四隅同士を連結する隅桁３と、上部デッキ１と下面デッキ２の各辺部の中間を連結する中間桁４と、上部デッキ１と下面デッキ２の中央部を連結する中央桁５とにより形成されている。 The synthetic resin pallet includes a corner girder 3 that connects the four corners of the upper deck 1 and the lower deck 2, a middle girder 4 that connects the middle of each side of the upper deck 1 and the lower deck 2, and the upper deck 1 and the lower surface. It is formed by a central girder 5 connecting the central part of the deck 2.

隅桁３の下端部と中間桁４の下端部とは、隅桁・中間桁下部連結桟部６により連結されており、また、中間桁４の下端部と中央桁５の下端部とは、中間桁・中央桁下部連結桟部７により連結されている。互いに直交する一対の隅桁・中間桁下部連結桟部６と互いに直交する一対の中間桁・中央桁下部連結桟部７とにより囲まれた領域は、開口部８として形成されている。従って、下部デッキ２は、隅桁３と中間桁４と中央桁５と４本の隅桁・中間桁下部連結桟部６と４本の中間桁・中央桁下部連結桟部７とにより構成されている。また、隅桁３と中間桁４との間及び中間桁４と中央桁５との間には、フォークが挿通可能なフォーク挿通通路９が形成されている。 The lower end of the corner girder 3 and the lower end of the intermediate girder 4 are connected by a corner girder / intermediate girder lower connecting bar 6, and the lower end of the intermediate girder 4 and the lower end of the central girder 5 are The middle girder and the middle girder lower coupling bar 7 are connected. A region surrounded by a pair of corner girder / intermediate girder lower connecting bars 6 orthogonal to each other and a pair of middle girder / middle girder lower connecting bars 7 orthogonal to each other is formed as an opening 8. Accordingly, the lower deck 2 is composed of a corner girder 3, an intermediate girder 4, a central girder 5, and four corner girder / middle girder lower connecting beam 6 and four middle girder / middle girder lower connecting beam 7. ing. Further, a fork insertion passage 9 through which a fork can be inserted is formed between the corner beam 3 and the intermediate beam 4 and between the intermediate beam 4 and the central beam 5.

隅桁３の下端部と中間桁４の下端部とを連結する隅桁・中間桁下部連結桟部６は、互いに対向する隅桁３の壁面３ａと中間桁４の側面４ａとを連結する複数の連結リブ６ａと、該連結リブ６ａと直交するとともに各連結リブ６ａを連結する交差リブ６ｂとにより形成されている。連結リブ６ａの長さ方向に対して垂直な断面形状は、略Ｔ字状に形成されており、同様に、交差リブ６ｂの長さ方向に対して垂直な断形状も、略Ｔ字状に形成されている。 A corner girder / intermediate girder lower connecting frame 6 that couples the lower end of the corner girder 3 and the lower end of the intermediate girder 4 is a plurality of connecting the wall surface 3a of the corner girder 3 and the side surface 4a of the intermediate girder 4 that face each other. The connecting rib 6a and the intersecting rib 6b that is orthogonal to the connecting rib 6a and connects the connecting ribs 6a. The cross-sectional shape perpendicular to the length direction of the connecting rib 6a is formed in a substantially T shape. Similarly, the cut shape perpendicular to the length direction of the intersecting rib 6b is also formed in a substantially T shape. Is formed.

なお、フォーク挿通通路９の入口側に位置する連結リブ６ａ１及び下部デッキ２の開口部８側に位置する連結リブ６ａ２の高さを、他の連結リブ６ａの高さより低く形成することにより、隅桁・中間桁下部連結桟部６のフォーク挿通通路９の入口側及び開口部８側に、傾斜部を形成することもできる。このように、隅桁・中間桁下部連結桟部６のフォーク挿通通路９の入口側及び開口部８側に、傾斜部を形成することにより、ハンドフォークリフトの車輪の隅桁・中間桁下部連結桟部６への乗り越えが容易になる。 The height of the connecting rib 6a1 positioned on the inlet side of the fork insertion passage 9 and the connecting rib 6a2 positioned on the opening 8 side of the lower deck 2 is lower than the height of the other connecting ribs 6a. It is also possible to form inclined portions on the entrance side and the opening 8 side of the fork insertion passage 9 of the beam / intermediate beam lower connecting bar portion 6. In this way, by forming the inclined portions on the entrance side and the opening 8 side of the fork insertion passage 9 of the corner beam / intermediate beam lower connecting beam portion 6, the corner beam / intermediate beam lower connecting beam of the hand forklift wheel is formed. It is easy to get over the section 6.

隅桁・中間桁下部連結桟部６を構成する所定の連結リブ６ａの垂直部６ａ’の長さ方向中央領域には、所定の長さに亘たって、肉厚部６ａ３が形成されている。本実施例には、フォーク挿通通路９の入口側に位置する連結リブ６ａ１と下部デッキ２の開口部８側に位置する連結リブ６ａ２との間に配置されている全ての連結リブ６ａの長さ方向中央領域に、肉厚部６ａ３が形成されている例が示されているが、フォーク挿通通路９の入口側に位置する連結リブ６ａ１と下部デッキ２の開口部８側に位置する連結リブ６ａ２との間に配置されている連結リブ６ａの全ての連結リブ６ａの長手方向中央領域に、肉厚部６ａ３する必要は必ずしもない。また、フォーク挿通通路９の入口側に位置する連結リブ６ａ１と下部デッキ２の開口部８側に位置する連結リブ６ａ２にも、その長手方向中央領域に、肉厚部を形成することもできる。 A thick portion 6a3 is formed over a predetermined length in the central region in the longitudinal direction of the vertical portion 6a 'of the predetermined connecting rib 6a constituting the corner beam / intermediate beam lower connecting bar portion 6. In this embodiment, the lengths of all the connecting ribs 6a arranged between the connecting rib 6a1 located on the inlet side of the fork insertion passage 9 and the connecting rib 6a2 located on the opening 8 side of the lower deck 2 are used. Although an example in which the thick portion 6a3 is formed in the central region in the direction is shown, the connecting rib 6a1 located on the inlet side of the fork insertion passage 9 and the connecting rib 6a2 located on the opening 8 side of the lower deck 2 are shown. It is not always necessary to provide the thick portion 6a3 in the central region in the longitudinal direction of all the connecting ribs 6a of the connecting ribs 6a disposed between the two. Further, a thick portion can also be formed in the central region in the longitudinal direction of the connecting rib 6a1 positioned on the inlet side of the fork insertion passage 9 and the connecting rib 6a2 positioned on the opening 8 side of the lower deck 2.

本実施例においては、隅桁・中間桁下部連結桟部６を構成する連結リブ６ａの中央は、所定の交差リブ６ｂにより連結されており、この中央の交差リブ６ｂ（以下、単に、中央交差リブと称し、符号６ｂ１を付す。）と連結リブ６ａとにより形成される十字路に位置する連結リブ６ａに、中央交差リブ６ｂ１を挟んで対称になるように、肉厚部６ａ３が形成されている。 In the present embodiment, the center of the connecting rib 6a constituting the corner beam / intermediate beam lower connecting beam portion 6 is connected by a predetermined intersecting rib 6b, and this center intersecting rib 6b (hereinafter simply referred to as center intersecting). A thick portion 6a3 is formed on the connecting rib 6a located on the cross road formed by the connecting rib 6a and the connecting rib 6a. .

上述したように、隅桁・中間桁下部連結桟部６を構成する連結リブ６ａの垂直部６ａ’の長さ方向中央領域に、肉厚部６ａ３を形成することにより、隅桁・中間桁下部連結桟部６の強度や剛性を高めることができ、従って、隅桁・中間桁下部連結桟部６の湾曲変形を防止することができるとともに、ひいては、合成樹脂製パレットの強度や剛性を向上することができる。 As described above, by forming the thick portion 6a3 in the central region in the longitudinal direction of the vertical portion 6a 'of the connecting rib 6a constituting the corner beam / intermediate beam lower connecting beam portion 6, the lower portion of the corner beam / intermediate beam The strength and rigidity of the connecting beam portion 6 can be increased. Therefore, the corner beam and the intermediate beam lower connecting beam portion 6 can be prevented from being bent and deformed, and the strength and rigidity of the synthetic resin pallet are improved. be able to.

また、隅桁・中間桁下部連結桟部６を構成する連結リブ６ａの垂直部６ａ’の長さ方向中央領域に、肉厚部６ａ３を形成することにより、隅桁・中間桁下部連結桟部６の強度や剛性を高めることができるので、肉厚部６ａ３以外の連結リブ６ａの厚さや交差リブ６ｂの厚さを薄くすることができ、従って、合成樹脂製パレットの重量の増加を抑えることができる。 Further, the thicker portion 6a3 is formed in the central region in the longitudinal direction of the vertical portion 6a 'of the connecting rib 6a constituting the corner beam / intermediate beam lower connecting beam portion 6, thereby forming the corner beam / intermediate beam lower connecting beam portion. 6 can be increased in strength and rigidity, so that the thickness of the connecting rib 6a other than the thick portion 6a3 and the thickness of the intersecting rib 6b can be reduced, and therefore the increase in the weight of the synthetic resin pallet can be suppressed. Can do.

中間桁・中央桁下部連結桟部７も、上述した隅桁・中間桁下部連結桟部６と同様に、互いに対向する中間桁４の壁面４ａと中央桁５の側面５ａとを連結する複数の連結リブ７ａと、該連結リブ７ａと直交するとともに各連結リブ７ａを連結する交差リブ７ｂとにより形成することができる。この場合には、連結リブ７ａの垂直部の長さ方向中央領域に、上述した隅桁・中間桁下部連結桟部６を形成する連結リブ６ａの垂直部６ａ’の長さ方向中央領域に形成された肉厚部６ａ３と同様の肉厚部を形成することができる。 Similarly to the above-described corner girder / intermediate girder lower connecting beam part 6, the intermediate girder / middle girder lower connecting beam part 7 also includes a plurality of wall surfaces 4a of the intermediate girder 4 and the side surface 5a of the central girder 5 that face each other. It can be formed by the connecting rib 7a and the intersecting rib 7b that is orthogonal to the connecting rib 7a and connects the connecting ribs 7a. In this case, the connecting rib 7a is formed in the central region in the longitudinal direction of the vertical portion 6a ′ of the connecting rib 6a that forms the corner beam / intermediate beam lower connecting beam portion 6 in the central region in the longitudinal direction of the vertical portion. A thick part similar to the thick part 6a3 thus formed can be formed.

上述したように、中間桁・中央桁下部連結桟部７を形成する連結リブ７ａの垂直部の長さ方向中央領域に、肉厚部を形成することにより、中間桁・中央桁下部連結桟部７の強度や剛性を高めることができ、従って、中間桁・中央桁下部連結桟部７の湾曲変形を防止することができるとともに、ひいては、合成樹脂製パレットの強度や剛性を向上することができる。 As described above, by forming a thick portion in the central region in the longitudinal direction of the vertical portion of the connecting rib 7a that forms the intermediate girder / center girder lower connecting beam portion 7, the intermediate girder / center girder lower connecting beam portion is formed. The strength and rigidity of the pallet 7 can be increased. Therefore, the middle beam / center girder lower connecting bar portion 7 can be prevented from being bent and deformed, and the strength and rigidity of the synthetic resin pallet can be improved. .

また、中間桁・中央桁下部連結桟部７を形成する連結リブ７ａの垂直部の長さ方向中央領域に、肉厚部を形成することにより、中間桁・中央桁下部連結桟部７の強度や剛性を高めることができるので、肉厚部以外の連結リブ７ａの厚さや交差リブ７ｂの厚さを薄くすることができ、従って、合成樹脂製パレットの重量の増加を抑えることができる。 Further, by forming a thick portion in the longitudinal central region of the vertical portion of the connecting rib 7a that forms the intermediate girder / center girder lower connecting beam portion 7, the strength of the intermediate girder / center girder lower connecting beam portion 7 is increased. Further, since the rigidity can be increased, the thickness of the connecting rib 7a other than the thick portion and the thickness of the intersecting rib 7b can be reduced, and therefore the increase in the weight of the synthetic resin pallet can be suppressed.

図１は、本発明の合成樹脂製パレットの斜視図である。FIG. 1 is a perspective view of a synthetic resin pallet according to the present invention. 図２は、本発明の合成樹脂製パレットの裏面斜視図である。FIG. 2 is a rear perspective view of the synthetic resin pallet of the present invention. 図３は、本発明の合成樹脂製パレットの部分拡大裏面斜視図である。FIG. 3 is a partially enlarged back perspective view of the synthetic resin pallet of the present invention. 図４は、本発明の合成樹脂製パレットの部分拡大裏面図である。FIG. 4 is a partially enlarged back view of the synthetic resin pallet of the present invention.

符号の説明Explanation of symbols

１・・・・・・・・・・・・上部デッキ
２・・・・・・・・・・・・下部デッキ
３・・・・・・・・・・・・・隅桁
４・・・・・・・・・・・・・中間桁
５・・・・・・・・・・・・・中央桁
６・・・・・・・・・・・・・隅桁・中間桁下部連結桟部
６ａ・・・・・・・・・・・・連結リブ
６ｂ・・・・・・・・・・・・交差リブ
６ａ３・・・・・・・・・・・肉厚部
７・・・・・・・・・・・・・中間桁・中央桁下部連結桟部 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Upper Deck 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lower Deck 3 ・ ・ ・ ・ ・ ・ ・ ・ Corner Girder 4 ・ ・ ・·········································· 6 Part 6a ··········· Connecting rib 6b ·········· Intersection rib 6a3 ··············· Thick part 7・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Intermediate girder / central girder lower connecting beam

Claims (1)

上部デッキと下部デッキとが、隅桁と中間桁と中央桁とにより連結されているとともに、隅桁の下端部と中間桁の下端部とが、隅桁・中間桁下部連結桟部により連結されており、また、中間桁の下端部と中央桁の下端部とが、中間桁・中央桁下部連結桟部により連結されており、更に、互いに直交する一対の隅桁・中間桁下部連結桟部と互いに直交する一対の中間桁・中央桁下部連結桟部とにより囲まれた開口部が形成されている合成樹脂製パレットにおいて、前記隅桁・中間桁下部連結桟部を構成する、フォーク挿通通路の入口側に位置する連結リブと前記開口部側に位置する連結リブとの間に配置されている連結リブの長さ方向に対して垂直な断面形状が、略Ｔ字状に形成されており、且つ、前記略Ｔ字状の連結リブの長さ方向中央部領域に位置する垂直部のみに、肉厚部が形成されていることを特徴とする合成樹脂製パレット。 The upper deck and lower deck are connected by a corner girder, middle girder, and center girder, and the lower end of the corner girder and the lower end of the intermediate girder are connected by a corner girder / middle girder lower connecting beam. In addition, the lower end of the intermediate girder and the lower end of the central girder are connected by the intermediate girder / center girder lower connecting beam, and a pair of corner girder / intermediate girder lower connecting beam In the synthetic resin pallet in which an opening surrounded by a pair of intermediate and center girder lower connecting bars perpendicular to each other is formed. The cross-sectional shape perpendicular to the length direction of the connecting rib disposed between the connecting rib located on the inlet side and the connecting rib located on the opening side is formed in a substantially T-shape. , And a central portion in the length direction of the substantially T-shaped connecting rib Located only in the vertical section, the synthetic resin pallet, wherein the thick portion is formed.
JP2004015197A 2004-01-23 2004-01-23 Plastic pallet Expired - Lifetime JP4326354B2 (en)

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JP5216561B2 (en) * 2008-12-10 2013-06-19 三甲株式会社 Plastic pallet
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