JP4326354B2 - Plastic pallet - Google Patents

Description

The present invention relates to a synthetic resin pallet used for transportation, transfer, storage and the like of articles.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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. .

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.

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.

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.

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. .

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.

FIG. 1 is a perspective view of a synthetic resin pallet according to the present invention. FIG. 2 is a rear perspective view of the synthetic resin pallet of the present invention. FIG. 3 is a partially enlarged back perspective view of the synthetic resin pallet of the present invention. FIG. 4 is a partially enlarged back view of the synthetic resin pallet of the present invention.

Explanation of symbols

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)

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.

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