JP3965327B2 - Plastic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pallet formed integrally with a synthetic resin used for transporting, transporting, and storing articles.
[0002]
[Prior art]
Conventionally, corner girders that connect the four corners of the upper deck and lower deck, four middle girders that connect the middle of each side of the upper deck and lower deck, and the middle of the upper deck and lower deck are linked. There is known a synthetic resin pallet made of one central girder and having fork insertion spaces formed between a corner girder and a middle girder and between a middle girder and a middle girder. The corner girder and the intermediate girder are connected by a crosspiece constituted by ribs running vertically and horizontally, and the intermediate girder and the central girder are also constituted by ribs running vertically and horizontally. It is connected with.
[0003]
In addition, in order to prevent the stacked synthetic resin pallets from shifting, a synthetic resin pallet having a non-slip member such as a grommet or a tape attached to the deck surface is known.
[0004]
[Problems to be solved by the invention]
In the conventional synthetic resin pallet described above, the strength and rigidity of the connecting part between the beam part that connects the corner beam and the intermediate beam and the intermediate beam and the central beam and each beam (corner beam, intermediate beam, and central beam). However, there is a problem that the strength and rigidity of the entire synthetic resin pallet are lowered. Further, in the conventional synthetic resin pallet, in order to suppress the decrease in strength and rigidity of the synthetic resin pallet, it is necessary to increase the thickness of the ribs constituting the girders and the crosspieces. There are problems such as an increase in the weight of the pallet made, an increase in manufacturing cost, and a decrease in productivity.
[0005]
In the above-described conventional synthetic resin pallets, in order to prevent the stacked synthetic resin pallets from shifting, anti-slip members such as grommets and tapes are attached to the deck surface. Due to the mounting work of the anti-slip member, there are problems that the manufacturing cost of the synthetic resin pallet increases and the weight of the synthetic resin pallet increases.
[0006]
An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a corner girder, an intermediate girder and a central girder arranged between the corner girder, and the corner girder and the intermediate girder and the intermediate girder and the central girder are connected to each other. In the synthetic resin pallet connected by the portion, a pair of angled protrusions having an inclined surface is disposed on the upper surface of the intermediate beam with a slit interposed therebetween.
[0008]
【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.
[0009]
First, the overall configuration of a synthetic resin pallet integrally formed of synthetic resin will be described with reference to FIGS.
[0010]
1 is a corner girder arranged at the four corners of the synthetic resin pallet, 2 is an intermediate girder arranged at the middle part of the corner girder 1, and 3 is arranged at the central part of the synthetic resin pallet. The central digit.
[0011]
An upper end portion of the corner beam 1 and an upper end portion of the intermediate beam 2 are connected by a later-described corner beam / intermediate beam upper connecting beam 4, and a lower end portion of the corner beam 1 and a lower end portion of the intermediate beam 2 are connected to each other. Are connected by a corner girder / intermediate girder lower coupling bar 5 described later. Further, the upper end portion of the intermediate beam 2 and the upper end portion of the central beam 3 are connected by an intermediate beam / central beam upper connecting beam 6 which will be described later, and the lower edge of the intermediate beam 2 and the lower edge of the central beam 3 are connected. These parts are connected to each other by an intermediate beam / center beam lower connecting beam 7 described later.
[0012]
The areas surrounded by the two substantially crossed corner girders / intermediate girder upper connecting bars 4 and the two middle girders / middle girder upper connecting bars 6 are substantially opposite to each other. The upper girder connecting bar 4 and the upper auxiliary bar 8 that connects the middle girder / center girder upper connecting bar 6 are connected. In the present embodiment, the upper auxiliary beam portion 8 includes an auxiliary beam 8a that connects one of the opposite corner beam / intermediate beam upper connection beam portion 4 and the intermediate beam / center beam upper connection beam portion 6, and the auxiliary beam. 8a, which is formed by a cross beam and an auxiliary beam 8b that connects the other opposite corner beam / intermediate beam upper connecting beam 4 and the intermediate beam / middle beam upper connecting beam 6; The auxiliary bar 8a is formed in a ladder shape by two ribs 8a1 arranged at a predetermined interval and a predetermined number of connecting ribs 8a2 that connect the two ribs 8a1. Similarly, the crosspiece 8b is also formed in a ladder shape by two ribs 8b1 arranged at a predetermined interval and a predetermined number of connecting ribs 8b2 connecting the two ribs 8b1. In addition, in the region surrounded by the two substantially perpendicular corner beam / intermediate girder lower connection beam portions 5 and the two intermediate beam / middle beam lower connection beam portions 7, the auxiliary beam as described above is provided. The portion 8 is not formed, and the opening 9 is formed.
[0013]
A fork insertion hole 10 is formed between the corner beam 1 and the intermediate beam 2 and between the intermediate beam 2 and the central beam 3.
[0014]
Next, the corner beam 1 will be described mainly with reference to FIGS. 5 and 6.
[0015]
The corner girder 1 has a substantially rectangular tube-shaped tube portion 1a. The tube portion 1a is located on the fork insertion hole 10 side and is substantially perpendicular to each other, and the fork insertion hole 10 side. And two outer walls 1a2 that are substantially orthogonal to each other. Inside the cylindrical portion 1a, there are formed two partition walls 1b extending substantially parallel to the inner wall 1a1, connecting the opposed inner wall 1a1 and the outer wall 1a2, and having substantially the same height as the cylindrical portion 1a. Has been. In addition, the corner formed by the two substantially orthogonal outer walls 1a2 extends a predetermined length in a diagonal direction toward the corner formed by the two substantially orthogonal inner walls 1a1. Corner diagonal ribs 1c having substantially the same height as the cylindrical portion 1a are formed. Further, two space portions surrounded by the inner wall 1a1, the partition wall 1b facing the inner wall 1a1, the outer wall 1a2 substantially orthogonal to the inner wall 1a1, and the other partition wall 1b facing the outer wall 1a2. Each of A1 is partitioned into two subspace portions A1a by a partition wall 1d.
[0016]
The corner girder 1 having the above-described configuration is formed using an appropriate number of molds that can be moved in the vertical direction. Although it can be formed in a solid plate shape, it is preferable to form an appropriate number of through holes 1f as in this embodiment. Similarly, the bottom portion 1g of the corner beam 1 formed by a die that is pulled upward can be formed in a solid plate shape, but an appropriate number of through holes 1h are formed as in this embodiment. It is preferable to do. By forming such through holes 1f and 1h, it is possible to reduce the weight of the synthetic resin pallet and improve drainage of cleaning liquid, rainwater, and the like.
[0017]
Next, the intermediate beam 2 will be described mainly with reference to FIGS.
[0018]
Similarly to the corner beam 1, the intermediate beam 2 also has a substantially rectangular tube portion 2a. The tube portion 2a includes three inner walls 2a1 positioned on the fork insertion hole 10 side, and the fork insertion hole 10. And one outer wall 2a2 that is not located on the side. Of the three inner walls 2a1, two are arranged so as to face each other, and the other inner wall 2a1 is arranged so as to face the outer wall 2a2. A single partition wall 2b extending substantially parallel to the inner wall 2a1 opposed to the outer wall 2a2 and connected to the inner wall 2a1 opposed to each other and having substantially the same height as the cylindrical portion 2a is provided inside the cylindrical portion 2a. Is formed. Further, the central portion of the inner wall 2a1 facing each other is connected to the inner wall 2a1 that is substantially parallel to the inner wall 2a1 facing each other (in other words, substantially orthogonal to the outer wall 2a2) and that faces the outer wall 2a2. In addition, a partition wall 2c having the same height as that of the cylindrical portion 2a is formed. Further, two space portions A2 surrounded by a partition wall 2b facing the outer wall 2a2, an inner wall 2a1 facing the partition wall 2b, an inner wall 2a1 facing each other, and a partition wall 2c substantially orthogonal to the outer wall 2a2. Are partitioned into two subspaces A2a by the partition wall 2d.
[0019]
The intermediate girder 2 having the above-described configuration is also formed by using an appropriate number of molds that can be moved in the vertical direction in the same manner as the corner girder 1 described above. The top part 2e of the intermediate girder 2 can be formed in a solid plate shape, but it is preferable to form an appropriate number of through holes 2f as in this embodiment. Similarly, the bottom portion 2g of the intermediate beam 2 formed by a die that is pulled upward can be formed in a solid plate shape, but an appropriate number of through holes 2h are formed as in this embodiment. It is preferable to do. By forming such through holes 2f and 2h, the weight of the synthetic resin pallet can be reduced, and drainage of cleaning liquid, rainwater, and the like is improved.
[0020]
Next, the central girder 3 will be described mainly with reference to FIGS. 9 and 10.
[0021]
Similarly to the corner beam 1 and the intermediate beam 2, the central beam 3 also has a substantially rectangular tube portion 3a, and the tube portion 3a is constituted by four inner walls 3a1 positioned on the fork insertion hole 10 side. Has been. Inside the cylindrical portion 3a, there are formed four partition walls 3b that extend substantially parallel to the respective inner walls 3a1, connect the opposing inner walls 3a1, and have substantially the same height as the cylindrical portion 3a. .
[0022]
The central girder 3 having the above-described configuration is also formed by using an appropriate number of molds that can be moved in the vertical direction, similarly to the above-described corner girder 1 and intermediate girder 2, but the metal that is pulled downwards. The top portion 3c of the central beam 3 formed by the mold can be formed in a solid plate shape, but it is preferable to form an appropriate number of through holes 3d as in this embodiment. Similarly, the bottom 3e of the central girder 3 formed by a die that is pulled upward can be formed in a solid plate shape, but an appropriate number of through holes 3f are formed as in this embodiment. It is preferable to do. By forming such through holes 3d and 3f, it is possible to reduce the weight of the synthetic resin pallet and improve drainage of cleaning liquid, rainwater, and the like.
[0023]
Next, a corner girder / intermediate girder upper coupling beam 4 that couples the upper end of the corner girder 1 and the upper end of the intermediate girder 2, and a corner girder that couples the lower end of the corner girder 1 and the lower end of the intermediate girder 2 The intermediate girder lower connecting beam 5 and the intermediate beam connecting the upper end of the intermediate beam 2 and the upper end of the central beam 3 will be described. .
[0024]
The corner girder / intermediate girder upper connecting beam 4 that connects the upper end of the corner girder 1 and the upper end of the intermediate girder 2 is formed of at least two outer walls 1a2 that are substantially orthogonal to each other and constitute the cylindrical portion 1a of the corner girder 1. An edge bar 4a that connects the upper end portion and the upper end portion of one outer wall 2a2 of the intermediate beam 2, an upper end portion of two substantially perpendicular inner walls 1a1 that form the cylindrical portion 1a of the corner beam 1, and an intermediate An inner wall connecting bar 4b for connecting the upper ends of the two inner walls 2a1 facing each other constituting the beam 2, and an upper end of the partition wall 1b facing the inner wall 1a1 formed in the cylindrical portion 1a of the corner beam 1; And a partition wall connecting bar 4c that is formed in the cylindrical portion 2a of the intermediate beam 2 and connects the outer wall 2a2 and the upper end portion of the partition wall 2b facing each other. Further, if necessary, the inner wall connecting bar 4b and the partition wall connecting bar 4c can be configured to be connected by a predetermined number of crossing bars 4d that intersect the connecting bars 4b and 4c. In addition, area | region A3 enclosed by the edge wall 4a, the partition wall connection frame 4c, the inner wall 1a1 which comprises the cylinder part 1a of the corner girder 1, and the mutually opposing inner walls 2a1 which comprise the cylinder part 2a of the intermediate girder 2 Is formed with an intersecting beam portion 11 formed by intersecting beams 1 as necessary.
[0025]
Further, the above-described corner girder / intermediate girder lower connecting bar 5 that couples the lower end of the corner girder 1 and the lower end of the intermediate girder 2 connects the lower end of the corner girder 1 and the lower end of the intermediate girder 2. It is formed by a crosspiece 5a and a crosspiece 5b intersecting the crosspiece 5a.
[0026]
Furthermore, the intermediate girder / center girder upper connecting beam 6 that connects the upper end of the intermediate beam 2 and the upper end of the central beam 3 is at least the upper ends of the two inner walls 2a1 that are opposite to each other and that constitute the intermediate beam 2. Of the four inner walls 3a1 constituting the cylindrical portion 3a of the central girder 3 and the upper ends of the two opposed inner walls 3a1 substantially parallel to the two opposed inner walls 2a1 constituting the intermediate girder 2 And a partition wall formed substantially parallel to the two inner walls 3a1 of the central girder 3 and an upper end portion of the partition wall 2d formed in the cylindrical portion 2a of the intermediate girder 2 And a partition wall connecting bar 6b for connecting the upper end portions of 3b. If necessary, an appropriate number of connecting bars 6c can be formed between the inner wall connecting bar 6a and the partition wall connecting bar 6b, and the inner wall connecting bar 6a and the partition wall connecting bar 6b are: It can also comprise so that it may connect with the predetermined number of crossing bars 6d which cross | intersect these connection bars 6a and 6b. Furthermore, the partition wall connecting bar 6b facing each other, the inner wall 2a1 facing the outer wall 2a2 constituting the cylindrical portion 2a of the intermediate girder 2, and the inner wall 3a1 constituting the cylindrical portion 3a of the central girder 3 facing the inner wall 2a1. The enclosed area A4 is formed with crosspieces and the like so that a mold for forming the intermediate girder / center girder lower connecting crosspiece 7 described later is disposed when the synthetic resin pallet is integrally formed. Not configured as an opening.
[0027]
As described above, the edge beam 4a constituting the corner beam / intermediate beam upper connecting beam portion 4 connecting the upper end portion of the corner beam 1 and the upper edge portion of the intermediate beam 2 is the outer wall of the corner beam 1 and the intermediate beam 2. 1a2, 2a2 are connected to each other, and the inner wall connecting beam 4b constituting the corner beam / intermediate beam upper connecting beam portion 4 that connects the upper end portion of the corner beam 1 and the upper edge portion of the intermediate beam 2 is provided between the corner beam 1 and the intermediate beam beam 1b. The inner walls 1a1, 2a1 of the girder 2 are connected to each other, and further, a partition wall connecting bar 4c constituting the corner beam / intermediate girder upper connecting bar part 4 is formed with a partition wall 1b formed in the cylindrical part 1a of the corner girder 1 Since it is configured to connect the partition wall 2b formed in the cylindrical portion 2a of the intermediate girder 2, the edge beam 4a, the inner wall connection beam 4b, the partition wall connection beam 4c, and the cylindrical wall Corner girder 1 and middle girder 2 combine to give the strength and rigidity of corner girder / middle girder upper link 4 to the corner girder / middle girder upper link Without increasing the number of bars constituting the crosspiece 4, it may be increased. Therefore, the strength and rigidity of the synthetic resin pallet can be increased without increasing the weight of the synthetic resin pallet.
[0028]
Further, as described above, the inner wall connecting beam 6a constituting the intermediate beam / center beam upper connecting beam portion 6 that connects the upper end portion of the intermediate beam 2 and the upper edge portion of the center beam 3 is connected to the inner wall 2a1 of the intermediate beam 2. A partition wall connecting beam 6b constituting an intermediate beam / center beam upper connecting beam portion 6 that connects the inner walls 3a1 of the central beam 3 and the upper end portion of the intermediate beam 2 and the upper edge portion of the center beam 3 is provided in the middle Since the partition wall 2d formed in the cylindrical portion 2a of the girder 2 and the partition wall 3b formed in the cylindrical portion 3a of the central girder 3 are connected, the inner wall connecting beam 6a and The partition wall connecting beam 6b, the cylindrical intermediate beam 2 and the central beam 3 are combined to form the intermediate beam / middle beam upper connecting beam part 6 with the strength and rigidity of the intermediate beam / middle beam upper connecting beam part 6. You can increase without increasing the number of bars. Therefore, the strength and rigidity of the synthetic resin pallet can be increased without increasing the weight of the synthetic resin pallet.
[0029]
Furthermore, as described above, the area A4 surrounded by the two opposing partition wall connecting bars 6b that connect the intermediate beam 2 and the central beam 3 and the intermediate beam 2 and the central beam 3 is a frame portion or the like. Since it is comprised as an opening part in which is not formed, the weight of a synthetic resin pallet can be reduced.
[0030]
Next, with reference to FIGS. 7, 9, and 11 to 13, the intermediate girder / center girder lower connecting beam 7 that connects the lower end of the intermediate girder 2 and the lower end of the central girder 3 will be described. .
[0031]
The intermediate beam / center beam lower connecting beam portion 7 is formed of a center beam portion 7a and inclined beam portions 7b located on both sides of the center beam portion 7a. The central crosspiece 7a is formed of a horizontal plate portion 7a1 extending from the intermediate beam 2 toward the central beam 3 and a vertical plate portion 7a2 extending downward from both ends of the horizontal plate portion 7a1. The inclined beam portion 7b is formed of an inclined plate portion 7b1 inclined upward toward the central beam portion 7a and a vertical plate portion 7b2 extending downward from the upper end of the inclined plate portion 7b1. Further, the lower end of the vertical plate portion 7a2 of the central beam portion 7a and the lower end of the vertical plate portion 7b2 of the inclined beam portion 7b are connected by a horizontal plate-shaped bottom portion 7c. The vertical plate portion 7a2 constituting the central beam portion 7a, the vertical plate portion 7b2 constituting the inclined beam portion 7b, and the plate-like bottom portion 7c form a recess 7d from the intermediate beam 2 toward the central beam 3. The vertical plate portion 7a2 connects the vertical plate portion 7a2 of the central beam portion 7a, the vertical plate portion 7b2 of the inclined beam portion 7b, and the plate-like bottom portion 7c at predetermined intervals in the recess 7d. , 7b2 is formed with plate-like ribs 7e. In addition, the horizontal plate-like portion 7a1 constituting the central crosspiece 7a is provided with a through hole 7a3 as necessary to reduce the weight of the synthetic resin pallet, and also on the plate-like bottom portion 7c. In order to reduce the weight of the synthetic resin pallet, a through hole 7c1 is formed as necessary. Such through-holes 7a3 and 7c1 also have a function as drain holes for cleaning liquid, rainwater, and the like.
[0032]
As described above, the intermediate girder 2 and the central girder disposed below the region A4 which is the opening surrounded by the two partition wall connecting bars 6b, the intermediate girder 2, and the central girder 3 which are opposed to each other. The intermediate girder / center girder lower coupling beam portion 7 connecting the intermediate beam 2 and the central beam portion 7a, the inclined beam portion 7b, the central beam portion 7a, and the inclined beam portion 7b. Is formed integrally with the plate-like bottom portion 7c for connecting the intermediate girder and the central girder as compared with the conventional middle girder and central girder lower coupling beam portion constituted by a plurality of divided beam portions. The strength and rigidity of the lower connecting bar portion 7 can be increased, and as a result, the strength and rigidity of the synthetic resin pallet is increased.
[0033]
Next, mainly referring to FIGS. 1, 7, and 14, a description will be given of a slip prevention member when stacking synthetic resin pallets.
[0034]
H is a displacement prevention member disposed on the upper surface near the edge of the intermediate beam 2, and the displacement prevention member H is disposed across a slit h <b> 1 that is substantially orthogonal to the outer wall 2 a 2 of the cylindrical portion 2 a of the intermediate beam 2. It has a pair of angle projections h2. The chevron h2 includes a vertical wall h2a located on the slit h1 side, a substantially horizontal apex h2b, and three directions from the apex h2b (the direction of the corner beam 1 direction, the edge direction of the intermediate beam 2 and the direction of the center beam 3), Each is formed by an inclined surface h2c inclined downward. The shift prevention member H is provided so as to protrude from the upper surface near the edges of the four intermediate girders 2 of the synthetic resin pallet having the above-described configuration.
[0035]
When the synthetic resin pallets on which articles are not placed are stacked, the outer wall 2a2 and the outer wall 2a2 formed in the cylindrical portion 2a constituting the intermediate beam 2 of the synthetic resin pallet Pa located above. Of the partition wall 2c that connects the inner wall 2a1 that is opposed to the inner wall 2a1 that is opposed to the center wall 2 of the synthetic resin pallet Pb that is positioned below, It is configured to be inserted into a slit h1 formed between the protrusions h2. Therefore, when the synthetic resin pallets are stacked, it is possible to prevent the synthetic resin pallet Pa located on the upper side from being shifted in the horizontal direction with respect to the synthetic resin pallet Pb located on the lower side. In the state, a large number of synthetic resin pallets can be stacked.
[0036]
In addition, since the mountain-shaped protrusion h2 is formed with an inclined surface h2c that is inclined downward from the top h2b, even when an article placed on the synthetic resin pallet contacts the mountain-shaped protrusion h2. Thus, it is possible to easily get over the mountain-shaped protrusion h2, and thus it is possible to prevent the article from being caught by the mountain-shaped protrusion h2 and preventing its movement.
[0037]
Furthermore, since it is not necessary to attach anti-slip members such as grommets or tapes to the deck surface, it is possible to prevent the manufacturing cost of synthetic resin pallets from increasing or the weight of synthetic resin pallets from increasing. Can do.
[0038]
【The invention's effect】
Since this invention has the structure demonstrated above, there exists an effect described below.
[0039]
Since the pair of angle-shaped protrusions having inclined surfaces is provided on the upper surface of the intermediate beam with the slit interposed therebetween, it is possible to prevent the article from being caught or the article from being prevented from moving.
[0040]
In addition, since it is not necessary to attach anti-slip members such as grommets and tapes to the deck surface, it is possible to prevent the production cost of synthetic resin pallets from increasing and the weight of synthetic resin pallets from increasing. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of a synthetic resin pallet according to the present invention.
FIG. 2 is a plan view of a synthetic resin pallet according to the present invention.
FIG. 3 is a rear perspective view of the synthetic resin pallet of the present invention.
FIG. 4 is a back view of the synthetic resin pallet of the present invention.
FIG. 5 is a perspective view of a corner beam constituting the synthetic resin pallet of the present invention.
FIG. 6 is a rear perspective view of a corner beam constituting the synthetic resin pallet of the present invention.
FIG. 7 is a perspective view of an intermediate beam constituting the synthetic resin pallet of the present invention.
FIG. 8 is a rear perspective view of an intermediate beam constituting the synthetic resin pallet of the present invention.
FIG. 9 is a perspective view of a central beam constituting the synthetic resin pallet of the present invention.
FIG. 10 is a rear perspective view of a central beam constituting the synthetic resin pallet of the present invention.
FIG. 11 is a partial perspective view of an intermediate girder and a central girder constituting the synthetic resin pallet of the present invention.
FIG. 12 is a partial plan view of an intermediate girder and a central girder constituting the synthetic resin pallet of the present invention.
FIG. 13 is a partial perspective view of a corner beam and an intermediate beam constituting the synthetic resin pallet of the present invention.
FIG. 14 is a partial perspective view just before two synthetic resin pallets of the present invention are stacked.
[Explanation of symbols]
H ·········· Prevention member 1 ······················· 1 ……………… Center Girder 4 ・ ・ ・ ・ ・ ・ ・ ・ Corner Girder / Middle Girder Upper Connecting Beam 5 ・ ・ ・ ・ ・ ・ ・ ・.. Corner girder / middle girder lower connecting beam 6 ......... middle girder / middle girder upper connecting beam 7 ... middle girder・ Center girder lower link

Claims (1)

In a synthetic resin pallet having a corner girder and a middle girder and a middle girder arranged between the corner girder, and the corner girder and the middle girder and the middle girder and the middle girder are connected by a connecting beam part, A synthetic resin pallet characterized in that a pair of angle-shaped protrusions having inclined surfaces are arranged on the upper surface of the beam with a slit interposed therebetween.

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