JP4195772B2 - Plastic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pallet on which various articles are placed for transportation or storage.
[0002]
[Prior art]
Conventionally, in order to protect seals and barcodes attached to the side wall of the pallet, a synthetic resin pallet is known which has a protruding portion that protrudes horizontally from the periphery of the edge of the front deck board and the back deck board. ing.
[0003]
[Problems to be solved by the invention]
Conventionally, as shown in FIG. 6, the upper deck board 1 and the lower deck board 2 are provided, and the upper deck board 1 and the lower deck board 2 are formed with a cylindrical corner girder 3 formed at the corners. A synthetic resin pallet p connected by a cylindrical intermediate beam 4 formed between the corner beams 3 and a cylindrical central beam 5 formed at the center is known. The edges of the upper deck board 1 and the lower deck board 2 are used to protect seals and bar codes attached to the outer surface 3a of the corner beam 3 and the outer surface 4a of the intermediate beam 4 of the plastic pallet P. Projection portions 1a and 2a projecting in the horizontal direction are formed from the periphery of the portion, and the outer surface 3a of the corner beam 3 and the outer surface 4a of the intermediate beam 4 are formed on the inner side from the edges of the upper deck board 1 and the lower deck board 2 There is known a synthetic resin pallet P which is configured to be retracted into a wall. Reference numeral 6 denotes a fork insertion hole formed between the corner beam 3 and the intermediate beam 4 and between the intermediate beam 4 and the central beam 5.
[0004]
As shown in FIG. 7, when two of the above-described conventional synthetic resin pallets are juxtaposed, for example, the right synthetic resin pallet p is a synthetic resin pallet p ′ positioned on the left side. (In addition, a dash (') is attached to the synthetic resin pallet located on the left side and its constituent parts.) And formed on the lower deck board 2 of the right synthetic resin pallet p. The projected portion 2a may run on the projected portion 2a ′ formed on the lower deck board 2 ′ of the left synthetic resin pallet p ′. In this state, when the left synthetic resin pallet p ′ is lifted by a forklift, the right synthetic resin pallet p ′ is formed by the protrusion 2a ′ formed on the lower deck board 2 ′ of the left synthetic resin pallet p ′. When one end of the pallet p is lifted and inclined, and the article is placed on the right synthetic resin pallet p, the article falls or the synthetic resin pallet is placed on the right synthetic resin pallet p. When the stacks are stacked, there is a problem that the stacked synthetic resin pallets collapse and fall.
[0005]
In order to solve the above-described problem, as shown in FIGS. 6 and 8, the synthetic resin pallets are placed between the outer corners 3 b of the corner beam 3 and close to the outer corners 3 b. In order to prevent the protrusions 1a and 2a from overlapping, a synthetic resin pallet P provided with a vertical ridge 7 is known. Here, r is a known rib formed on the back surface of the upper deck board 1 or the lower deck board 2, the corner beam 3, the intermediate beam 4, and the central beam 5.
[0006]
By the way, after placing an article such as a plastic bottle on a synthetic resin pallet, the synthetic resin pallet is packed with a belt-like stretch film together with the article (for example, Utility Model Registration No. 2520455). In this case, the belt-like stretch film at the beginning of winding is a protrusion 1a formed on the upper deck board 1 of the above-described synthetic resin pallet p, particularly a protrusion located near the outer corner 3b of the corner beam 3. The belt-shaped stretch film wound around the part 1a and caught on the synthetic resin pallet or the article moves upward and does not come off from the synthetic resin pallet p. When a pair of vertical protrusions 7 are provided close to the vicinity of the outer corner 3b of the beam 3, the distance between the vertical protrusions 7 is narrow, so that the protrusions positioned between the vertical protrusions 7 of the corner beam 3 are narrow. There was a problem that the band-shaped stretch film wound around the synthetic resin pallet or article was moved upward and detached from the synthetic resin pallet p, because the band-shaped stretch film was sufficiently prevented from biting into the part 1a. .
[0007]
Further, in the conventional synthetic resin pallet, as shown in FIG. 8, the above-described vertical protrusion 7 is formed by increasing the thickness of the peripheral wall 3 c of the cylindrical corner beam 3. Therefore, in the cooling process when the synthetic resin pallet is manufactured by injection molding, there is a problem that so-called sink deformation occurs in the thick portion where the vertical protrusions 7 are formed.
[0008]
An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has corner girders, intermediate girders and central girders for connecting the upper deck board and the lower deck board, and the edges of the upper deck board and the lower deck board. In a synthetic resin pallet having a protruding portion that protrudes in the horizontal direction from the periphery, the peripheral wall at a position close to the two fork insertion side corners of the corner beam bulges from the inside to the outside of the corner beam. As a result , the vertical bulges are formed in the corner girders , and the thickness of the vertical bulges is substantially the same as the thickness of the peripheral walls of the corner girders other than the vertical bulges. Is formed.
[0010]
【Example】
Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.
[0011]
Similar to the above-described conventional synthetic resin pallet p, the synthetic resin pallet P of the present invention also has an upper deck board 10 and a lower deck board 20, and the upper deck board 10 and the lower deck board 20 have corners. It is connected by a cylindrical corner girder 30 formed in the part, a cylindrical intermediate girder 40 formed between the corner girder 30, and a cylindrical central girder 50 formed in the central part. The edges of the upper deck board 10 and the lower deck board 20 are used to protect seals and bar codes attached to the outer surface 30a of the corner beam 30 and the outer surface 40a of the intermediate beam 40 of the synthetic resin pallet P. Projection portions 10a and 20a projecting in the horizontal direction are formed from the periphery of the portion, and the outer surface 30a of the corner beam 30 and the outer surface 40a of the intermediate beam 40 are formed from the edges of the upper deck board 10 and the lower deck board 20 to the inner side. Configured to retract. Reference numeral 60 denotes a fork insertion hole formed between the corner beam 30 and the intermediate beam 40 and between the intermediate beam 40 and the central beam 50. The fork insertion hole 60 includes four plastic resin pallets P. Two pieces are formed on each side surface, and a so-called four-way synthetic resin pallet P is formed.
[0012]
The corner girder 30 is formed in a substantially rectangular tube shape having a peripheral wall 30b having a substantially constant thickness t1, and the substantially rectangular tube-shaped corner beam 30 has four corners, that is, the upper deck board 10 and the lower deck. Two corners 31 and 32 located on the diagonal line of the board 20 and two corners 33 and 34 located on the entrance 60a side of the fork insertion hole 60 are provided. Of the two corners 31 and 32 located on the diagonal line of the upper deck board 10 and the lower deck board 20, the corner 32 located on the central girder 50 side is referred to as a central girder side corner, and the other corner. 31 is referred to as the outer corner. The two corners 33 and 34 located on the entrance 60a side of the fork insertion hole 60 are referred to as fork insertion side corners.
[0013]
Reference numeral 70 denotes a vertical bulging ridge having the same function as the vertical ridge 7 for preventing the overlapping of the protruding portions 1a and 2a of the above-described conventional synthetic resin pallets. The vertical bulging strip portion 70 of the present embodiment is not formed by increasing the thickness of the peripheral wall 3c of the corner beam 3 like the conventional vertical ridge 7 described above, and the wall thickness t1 is substantially the same. The peripheral wall 30b of the fixed corner beam 30 is formed to bulge from the inner side of the corner beam 30 to the outer side, so that it is formed into a substantially vertical bulging strip portion. The thickness t2 is formed to have substantially the same thickness as the thickness t1 of the peripheral wall 30b other than the vertical bulge 70. As described above, the vertical protrusion 7 is formed by increasing the thickness of the peripheral wall 3c by making the thickness of the peripheral wall 30b of the corner beam 30 including the vertical bulge 70 substantially constant. As in the case of the conventional corner beam 3, cooling of the manufacturing process of the synthetic resin pallet by injection molding does not cause sink deformation in the thick part, and thus the strength, rigidity and product shape are stable. A synthetic resin pallet can be molded. Note that R is a known rib formed on the back surface of the upper deck board 10 or the lower deck board 20, the corner beam 30, the intermediate beam 40, and the central beam 50.
[0014]
Further, as described above, the vertical bulging strip portion 70 has the corner wall 30b on the outer corner portion 31 side of the corner beam 30 and at the position close to the two fork insertion side corner portions 33 and 34, as described above. Therefore, unlike the conventional pair of narrow vertical ridges 7 formed close to the outer corner 3b of the corner beam 3, The distance between the vertical bulge 70 formed near the fork insertion side corner 33 and the vertical bulge 70 formed near the other fork insertion side 34 is Can be long.
[0015]
As described above, by increasing the distance between the pair of vertical bulging strips 70 formed in the corner beam 30, as shown in FIG. 4, an article such as a plastic bottle is placed on the synthetic resin pallet P. After placing A, when the synthetic resin pallet P is packed together with the article A with the belt-like stretch film F, the belt-like stretch film F at the beginning of winding is a pair of vertical bulging strips 70 of the corner beam 30. The band-shaped stretch film F wound around the synthetic resin pallet P and the article A is moved upward and detached from the synthetic resin pallet P so that the protrusion 10a of the upper deck board 10 located therebetween is sufficiently caught and caught. This can be reliably prevented.
[0016]
In the embodiment described above, a so-called four-way synthetic resin pallet P is shown in which two fork insertion holes 60 are formed on each of the four side surfaces of the synthetic resin pallet P. Naturally, a so-called two-way synthetic resin pallet P in which fork insertion holes 60 are formed only on one opposite side surface as shown in FIG. Can be applied.
[0017]
A two-way synthetic resin pallet P includes an end girder 80 formed along opposite edges of the upper deck board 10 and the lower deck board 20, and an intermediate girder 90 formed between the end girders 80. A fork insertion hole 60 is formed between the end beam 80 and the intermediate beam 90. In the two-way synthetic resin pallet P as well, the vertical bulging strip portion 70 is connected to the peripheral wall 80b near the outer corner of the end girder 80, as in the above-described four-way synthetic resin pallet P. It is formed by bulging from the inside of the beam 80 toward the outside.
[0018]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0019]
The vertical ridge is formed by increasing the thickness of the peripheral wall because the thickness of the vertical ridge is substantially the same as the thickness of the peripheral wall other than the vertical ridge. As in the case of conventional girders, cooling of the manufacturing process of synthetic resin pallets by injection molding does not cause sink deformation in the thick part, and therefore stable synthesis of strength, rigidity and product shape A resin pallet can be formed.
[0020]
The vertical bulging strip is formed by bulging the peripheral wall at the outer corner of the beam and close to the corner on the fork insertion side from the inner side of the beam to the outer side. When packing a resin pallet together with a strip-shaped stretch film, the strip-shaped stretch film at the beginning of winding sufficiently bites into the protruding part of the upper deck board located between the pair of vertical bulging strips of the beam. Therefore, it is possible to reliably prevent the strip-shaped stretch film wound around the synthetic resin pallet or the article from moving upward and coming off from the synthetic resin pallet.
[Brief description of the drawings]
FIG. 1 is a perspective view of a synthetic resin pallet according to the present invention.
FIG. 2 is an enlarged perspective view of the vicinity of a corner beam of the synthetic resin pallet of the present invention.
FIG. 3 is a horizontal sectional view of the vicinity of a corner beam of a synthetic resin pallet according to the present invention.
FIG. 4 is a perspective view showing a state in which the synthetic resin pallet of the present invention and an article placed thereon are wound with a belt-like stretch film.
FIG. 5 is a perspective view of a synthetic resin pallet according to another embodiment of the present invention.
FIG. 6 is a perspective view of a conventional synthetic resin pallet.
FIG. 7 is a partial plan view showing a contact state between conventional synthetic resin pallets.
FIG. 8 is a horizontal sectional view of the vicinity of a corner beam of a conventional synthetic resin pallet.
[Explanation of symbols]
P ... Plastic plastic pallet 10 ... Upper deck board 20 ... Lower deck board 10a, 20a 30 ········ Corner 40 ··············· Intermediate digit (four-way)
50 ············ 70 ···························································································· Intermediate digit (two-way)

Claims (1)

Combining corner girders, middle girders, and center girders that connect the upper deck board and lower deck board, and projections that project horizontally from the periphery of the edges of the upper deck board and lower deck board In the resin pallet, the peripheral wall at a position close to the two fork insertion side corners of the corner beam is bulged from the inside to the outside of the corner beam , so that the vertical bulge portion is formed on the corner beam. It is formed, and the thickness of the vertical bulging ridge is formed to be substantially the same as the thickness of the peripheral wall of the corner girder other than the vertical bulging ridge. palette.

Images