JP7052990B2 - palette - Google Patents

Description

The present invention relates to a pallet that supports a load.

Among the pallets that support the load, there is a single-sided pallet in which only the upper surface of the deck board is used as the mounting surface (hereinafter, also simply referred to as a pallet). This type of pallet is constructed by connecting two pallet-forming members to each other. The upper pallet forming member is configured with a mounting surface on which the load is placed, and the lower pallet forming member is configured with a ground plane. The lower pallet forming member is composed of a grounding board and a lower girder, and the grounding board is provided with ribs in a grid pattern (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-25476

By the way, when a pallet having a grid-like rib on the grounding surface is grounded to the grounding surface, dust or dirt may enter into the grid-shaped concave portion composed of the ribs on the grounding surface and become dirty. There is. Even when cleaning the pallet, the grid-like rib portion is a region that is difficult to clean because of its complicated shape.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pallet in which a ground plane can be easily washed.

The pallet that solves the above problems is an insertion port configured between a deck board, a grounding board facing the deck board, a plurality of girders connecting the deck board and the grounding board, and adjacent girders. The space between the adjacent girders on the grounding board is an insertion port component that constitutes the lower part of the insertion port, and the insertion port component is below the bottom surface of the girder and flush with the girder. It is provided with a plate portion, an upper plate portion facing the insertion port and facing the lower plate portion, and a hollow portion formed between the lower plate portion and the upper plate portion.
According to the above configuration, the ground plane is flush with each other, the ground plane is less likely to be soiled, and cleaning is facilitated.

Regarding the pallet, the pallet is formed by abutting and connecting the upper pallet forming member and the lower pallet forming member, and the upper pallet forming member is arranged at the end of the deck board toward the lower pallet forming member. The lower end girder is provided with an upper middle girder located between the upper end girder and the upper end girder, and the lower pallet forming member is arranged at the end of the grounding board toward the upper pallet forming member. A lower intermediate girder located between the upper end girder and the lower end girder is provided, and the upper end girder and the lower end girder are abutted with each other, and the upper middle girder and the lower middle girder are abutted with each other to form the girder. May be configured such that the space between the lower end girder and the lower intermediate girder in the grounding board is the insertion port component.
According to the above configuration, an insertion port component can be provided between the lower end girder and the lower intermediate girder.

Regarding the pallet, in the insertion port constituent portion, the lower plate portion constitutes a ground plane with the entire area between the adjacent girders as a flat surface flush with the bottom surface of the girder, and the lower plate portion and the lower plate portion. It is preferable to have a structure in which a partition wall for partitioning the hollow portion into two is provided between the upper plate portion and the hollow portion.
According to the above configuration, the strength of the insertion port component can be increased by the partition wall.

Regarding the pallet, in the insertion port constituent portion, the lower plate portion has a convex portion and a concave portion in a second direction intersecting with the first direction which is the insertion direction of the fork inserted into the insertion port. It is preferable that the protrusions extend in parallel with each other and are provided side by side in the first direction, and the convex portion is composed of the lower plate portion, the upper plate portion, and the hollow portion.
According to the above configuration, by providing the convex portion and the concave portion, the ground contact surface can be widened by the convex portion while the strength in the thickness direction is maintained by the partition wall constituting the concave portion, and the ground contact surface is contaminated. It is hard to stick and easy to clean.

With respect to the pallet, it is preferable that the grounding board is laid with a non-slip tape along the second direction, and the width of the convex portion in the first direction is the same as or wider than the width of the non-slip tape.
According to the above configuration, the non-slip tape can be reliably laid on the convex portion.

Regarding the pallet, in the insertion port constituent portion, the lower plate portion is one concave groove extending in a second direction intersecting with the first direction which is the insertion direction of the fork inserted into the insertion port. The convex portions on both sides of the concave groove preferably include the lower plate portion, the upper plate portion, and the hollow portion.
According to the above configuration, the partition wall forming the concave groove allows the ground contact surface to be widened by the convex portion while maintaining the strength in the thickness direction, the ground contact surface is less likely to be soiled, and cleaning is performed. It will be easier.

With respect to the pallet, the grounding board is laid with a non-slip tape along the second direction, and the non-slip tape is laid on the convex portion so as not to overlap the concave groove, or the concave. It is preferable to lay the concave groove on both sides of the groove so as to close the concave groove.
According to the above configuration, it is possible to prevent foreign matter from entering the concave groove.

According to the present invention, it is possible to provide a pallet having a ground plane that can be easily washed.

A perspective view of the pallet of the first embodiment as viewed from the loading surface side. A perspective view of the pallet of the same embodiment as viewed from the ground plane side. The perspective view of the lower pallet forming member of the pallet of the same embodiment as seen from the inner surface with which the upper pallet forming member is abutted. The main part plan view of the lower pallet forming member of the pallet of the same embodiment. It is a vertical cross-sectional view of the insertion port component part in the lower pallet forming member of the same embodiment, and is the AA cross-sectional view of FIG. A perspective view of the lower pallet forming member of the pallet of the second embodiment as viewed from the ground plane side. It is a cross-sectional view of the insertion port component part in the lower pallet forming member of the same embodiment, and is the BB cross-sectional view of FIG. It is a vertical sectional view of the insertion port component part in the lower pallet forming member of the same embodiment, and is the CC vertical sectional view of FIG. It is a vertical sectional view of the insertion port component part in the lower pallet forming member of the same embodiment, and is the DD vertical sectional view of FIG. (A) is a perspective view of the lower pallet forming member of the pallet of the third embodiment as viewed from the ground plane side, and (b) is a perspective view of a main part showing a state in which the non-slip tape is laid so as to straddle the concave groove. figure. It is a vertical sectional view of the insertion port component part in the lower pallet forming member of the same embodiment, and is the EE vertical sectional view of FIG.

Hereinafter, the pallet 1 will be described with reference to FIGS. 1 to 11.
(First Embodiment)
The pallet 1 in the first embodiment is a two-sided single-sided pallet. As shown in FIGS. 1 and 2, the pallet 1 is made of synthetic resin and is formed in a rectangular parallelepiped shape in which an upper pallet forming member 2 and a lower pallet forming member 3 facing each other are welded together. The upper pallet forming member 2 includes a rectangular plate-shaped deck board 20 and an upper girder 21 projecting from the deck board 20 toward the lower pallet forming member 3. The lower pallet forming member 3 includes a rectangular plate-shaped grounding board 30 and a lower girder 31 protruding from the grounding board 30 toward the upper pallet forming member 2. Then, the tip of the upper girder 21 and the tip of the lower girder 31 facing each other are welded together to form a pallet 1 made of synthetic resin.

The upper pallet forming member 2 and the lower pallet forming member 3 are formed by a gas assist method in which a gas is blown into the upper pallet forming member 2 and the lower pallet forming member 3 after injection molding and before the molded product solidifies to form a hollow portion. Specifically, the upper pallet forming member 2 and the lower pallet forming member 3 inject a synthetic resin material such as polyolefin such as polypropylene, high-density polyethylene, or ethylene-propylene copolymer into a mold, and then in the cavity. A hollow portion is formed inside by injecting gas into the polyethylene.

The deck board 20 of the upper pallet forming member 2 includes a loading surface 20a which is an outer surface of the deck board 20. A plurality of non-slip tapes 20b are laid on the loading surface 20a in order to prevent the loaded load placed on the loading surface 20a from slipping on the loading surface 20a. Further, a pair of insertion ports 4 are provided on the pair of facing side surfaces of the pallet 1. The pair of insertion ports 4 are formed between the deck board 20 and the grounding board 30, and are formed between the girder portions where the tips of the upper girder 21 and the lower girder 31 are butted against each other.

On the inner surface of the loading side, which is the inner surface of the deck board 20, three upper girders 21 are arranged in a row. These three upper girders 21 extend along the first direction D1 which is the insertion direction of the fork inserted into the insertion port 4, and are parallel to the second direction D2 orthogonal to the first direction D1. It is installed side by side in. The three upper girders 21 project vertically from the inner surface of the deck board 20 on the loading side and have the same width and height.

Of the three upper girders 21, the upper girders 21 located on both sides are the upper end girders 21a, and one upper girder 21 located between the upper end girders 21a is the upper middle girder 21b. In the deck board 20, between one upper end girder 21a and the upper middle girder 21b is a portion constituting one insertion port 4, and between the other upper end girder 21a and the upper middle girder 21b is the other. It becomes a part constituting the insertion port 4. A grid-shaped grid rib 22 is provided on the inner surface of the deck board 20 and the upper girder 21 on the loading side.

As shown in FIG. 2, three lower girders 31 are also arranged in a row on the inner surface on the grounding surface side, which is the inner surface of the grounding board 30. These three lower girders 31 extend along the first direction D1 and are arranged side by side in parallel with each other in the second direction D2. The three lower girders 31 project vertically from the inner surface of the grounding board 30 on the grounding surface side and have the same width and height. Each lower girder 31 includes an outer peripheral wall 27 and a grid-like rib 26 provided inside the outer peripheral wall (see FIG. 3), and a predetermined strength is maintained. The pallet 1 is configured by abutting the tip of the upper girder 21 and the tip of the lower girder 31 and integrating them by welding or the like.

Of the three lower girders 31, the lower girders 31 located on both sides are the lower end girders 31a, and one lower girder 31 located between the lower end girders 31a is the lower middle girder 31b. The grounding board 30 includes two openings 32 between one lower end girder 31a and the lower intermediate girder 31b, and two openings 32 between the other lower end girder 31a and the lower intermediate girder 31b. ing. A total of four openings 32 are partitioned by two lower end girders 31a and lower intermediate girders 31b extending in the first direction D1 and three lower outlet components 33 extending in the second direction D2. The grounding board 30 constituting the grounding surface 30a in contact with the ground or the like has a "field" shape and constitutes a flush grounding surface 30a. That is, in the ground plane 30a, the region along the first direction D1 is formed by the bottom surface of the lower end girder 31a, and the region along the second direction D2 is formed by the bottom surface of the lower insertion port constituent portion 33. When the bottom surface of the lower end girder 31a and the bottom surface of the lower insertion port component 33 are flush with each other, the shape of the ground contact surface 30a is simplified and a grid-shaped recess is provided. Compared to this, foreign matter such as dust is less likely to enter, and it is easier to clean. The ground contact surface 30a may be said to be flush with each other, but may be slightly wavy to the extent that dust or the like does not enter.

When the tip of the upper girder 21 and the tip of the lower girder 31 are abutted and integrated, the upper end girder 21a and the lower end girder 31a constitute the end girder 5, and the upper middle girder 21b and the lower middle girder 31b are formed. It constitutes the intermediate digit 6. Then, between one end girder 5 and the intermediate girder 6 and between the deck board 20 and the lower insertion port constituent portion 33, one insertion port 4 extending in the direction of arrow D1 is configured, and the other. The other insertion port 4 extending in the direction of arrow D1 is also configured between the end girder 5 and the intermediate girder 6 and between the deck board 20 and the lower insertion port component 33.

As shown in FIG. 3, the lower insertion port component 33 extends in the second direction D2 between the three lower girders 31. The lower insertion port component 33 is provided in one opening end 33a of the insertion port 4, the other opening end 33a, and an intermediate portion 33b between these two opening ends 33a. As shown in FIG. 5, the lower insertion port constituent portion 33 includes a lower plate portion 34 forming a part of the ground contact surface 30a, an upper plate portion 35 facing the lower plate portion 34 at the insertion port 4, and a lower portion. A hollow portion 36 formed between the plate portion 34 and the upper plate portion 35 is provided.

The lower plate portion 34 is a wall that connects between the lower end girders 31a and is continuous with the lower plate portion 34a of the lower end girder 31a and the lower plate portion 34a of the lower intermediate girder 31b (see FIG. 2). The entire bottom surface of the lower plate portion 34 is a flat surface so that a step is not formed between the lower plate portion 34a of the lower end girder 31a and the lower plate portion 34a of the lower intermediate girder 31b.

The upper plate portion 35 constitutes the inner surface of the insertion port 4 on the ground plane side, and is configured to be flush with each other so that the tip of the fork does not hit. The inner surface on the ground plane side may be slightly wavy to the extent that it does not hinder the movement of the fork, even if it is said to be flush with each other. Further, in the lower insertion port constituent portion 33, the side edge portion along the second direction D2 becomes an inclined portion that widens the vertical width of the insertion port 4, and the fork is inserted into the insertion port 4. It is a guide unit 39. That is, the guide portion 39 is composed of an inclined surface that gently descends toward the tip portion in the first direction D1 so that the fork can smoothly move in the insertion port 4 from any direction of the first direction D1. I have to. Then, as shown in FIG. 5, a hollow portion 36 formed by the gas assist method is formed between the lower plate portion 34 and the upper plate portion 35.

As shown in FIGS. 4 and 5, the space between the lower plate portion 34 and the upper plate portion 35 is divided into two first hollow portions 36a and a second hollow portion 36b by a partition wall 37. .. In the region corresponding to the first hollow portion 36a and the region corresponding to the second hollow portion 36b in the lower plate portion 34, an injection mark 38 of an injection port for injecting gas into the inside is formed by a gas assist method. At the time of molding by the gas assist method, gas is injected from the injection port after the synthetic resin material is injection-filled in the cavity. At this time, gas is injected from two injection ports into the region corresponding to one lower insertion port component 33. Therefore, when the gas is injected from the two injection ports, the synthetic resin material in the cavity is pressed by the injection gas, and the partition wall 37 is formed by the compressed synthetic resin material. The number of hollow portions 36 will be the same as the number of injection ports. The partition wall 37, together with the outer peripheral wall of the lower pallet forming member 3, is a reinforcing wall that prevents the lower plate portion 34 and the upper plate portion 35 from bending inward with each other. As an example, FIG. 4 shows the state of the partition wall 37 at the opening end 33a. The partition wall 37 forms a first hollow portion 36a and a second hollow portion 36b when gas is similarly injected from the two injection ports. Here, one end of the partition wall 37 on the lower end girder 31a side is located inside in the first direction D1, and the other end on the lower intermediate girder 31b side is located outside in the first direction D1. It extends diagonally in direction D2. The position and shape of the partition wall 37 are not limited to the example of FIG. As an example, the position and shape of the partition wall 37 differ depending on the position of the injection port, the gas injection pressure, and the like.

As described above, according to the present embodiment, the following effects are exhibited.
(1-1) In the lower insertion port forming portion 33, the ground contact surface 30a formed by the lower plate portion 34 is flush with each other, and no recess is provided. Moreover, it is flush with the portion of the ground plane 30a formed by the lower end girder 31a and the lower plate portion 34a of the lower intermediate girder 31b. Therefore, it becomes difficult for the entire ground surface 30a to become dirty, and it becomes easy to clean the ground surface 30a.

(1-2) The ground plane 30a is formed in a "field" shape. Each side constituting the "ta" shape has a predetermined width. Therefore, the non-slip tape 20b can be laid along the first direction D1 and the second direction D2 also on the ground plane 30a.

(1-3) Even when the pallet 1 is further stacked on the load, the load on the load located under the pallet 1 is distributed, so that the load is less likely to have a mark of the pallet 1. ..
(1-4) Since the lower insertion port component 33 includes the guide portion 39, the fork can smoothly move in the insertion port 4.

(Second embodiment)
Hereinafter, the second embodiment of the pallet will be described with reference to FIGS. 6 to 9.
As shown in FIG. 6, in the lower insertion port component 41 of the pallet of the second embodiment, the concave rows 42, which are rows of the concave portions 43 having a substantially elliptical shape extending in the second direction D2, are parallel to each other and It is arranged side by side in the first direction D1. A convex portion 44 is formed between the concave rows 42 and the concave rows 42 adjacent to each other in the first direction D1. As shown in FIGS. 7 and 8, the convex portion 44 includes a lower plate portion 45, an upper plate portion 46, and a hollow portion 47. The hollow portion 47 is a continuous space portion extending in the second direction D2 between the lower plate portion 45 and the upper plate portion 46. Further, each recess 43 is provided with a partition wall 48 which is a rising wall having a substantially elliptical shape. The partition wall 48 located between the adjacent recesses 43 in one concave row 42 includes a hollow portion 48a communicating with the hollow portion 47 of the convex portion 44. That is, the hollow portions 47 of the adjacent convex portions 44 communicate with each other by the hollow portions 48a. The lower plate portion 45 of the convex portion 44 is a wall continuous with the lower plate portion 45a of the lower end girder 31a and the lower intermediate girder 31b, and constitutes a flush ground surface 40a.

In the pallet of the second embodiment, the hollow portion 47 of the convex portion 44 is partitioned by the partition wall 48 constituting each concave portion 43, and the volume of the hollow portion 47 is smaller than that of the hollow portion 36 of the first embodiment. Therefore, in the pallet of the second embodiment, the strength of the lower insertion port component 41 can be increased as compared with the pallet of the first embodiment. Of course, since the lower insertion port constituent portion 41 is provided with a plurality of rows of convex portions 44, the lower insertion port constituent portion 41 has a grid-shaped concave portion on the entire lower insertion port constituent portion 41 on the ground surface 40a. The area of the flush part can be increased. Therefore, the contact patch 40a is less likely to get dirty, and it becomes easier to clean. Also in the second embodiment, it is molded by the gas assist method. The gas injection port in the second embodiment may be provided in the area of the lower insertion port component 41, but here, it is located outside the area of the lower insertion port component 41, and an injection mark is provided at the position. Be done.

Further, the width of the convex portion 44 is the same as or wider than the width of the non-slip tape 20b. As a result, the non-slip tape 20b can be laid using the convex portion 44 also in the second direction D2.

(Third embodiment)
Hereinafter, a third embodiment of the pallet will be described with reference to FIGS. 10 and 11.
The lower insertion port component 51 of the pallet of the third embodiment includes one concave groove 52 extending in the second direction D2, and each convex portion 53 located on both sides of the concave groove 52 is a lower plate portion 54. The upper plate portion 55 and the hollow portion 56 are provided. Each hollow portion 56 is a continuous space portion extending in the second direction D2 between the lower plate portion 54 and the upper plate portion 55. The partition wall 57 constituting the concave groove 52 partitions two adjacent hollow portions 56. The lower plate portion 54 of each convex portion 53 is a wall continuous with the lower plate portion 54a of the lower end girder 31a and the lower intermediate girder 31b, and constitutes a flush ground surface 50a. The gas injection port in the third embodiment may be provided in the area of the lower insertion port component 51, but here, it is located outside the area of the lower insertion port component 41, and an injection mark is provided at the position. Be done.

Even in such a pallet of the third embodiment, the hollow portion 56 is partitioned by the partition wall 57 of the concave groove 52, and the strength of the lower insertion port constituent portion 51 can be increased. Of course, since the lower insertion port constituent portion 33 is provided with the two convex portions 53, the opening area of the concave portion is reduced as compared with the case where the lower plate portion 54 is provided with the concave portion as a whole, and the lower plate portion 54 is flush with each other. You can increase the part. Therefore, the contact patch 30a is less likely to get dirty, and it becomes easier to clean.

Further, as shown in FIG. 10A, the width of the convex portion 53 is the same as or wider than the width of the non-slip tape 20b. As a result, the non-slip tape 20b can be laid using the convex portion 53 also in the second direction D2.
As shown in FIG. 10B, the non-slip tape 20b may be wider than the concave groove 52 and laid so as to close the opening of the concave groove 52. That is, the non-slip tape 20b is laid on the convex portions 53 on both sides of the concave groove 52 so as to straddle the concave groove 52. This makes it difficult for foreign matter to enter the concave groove 52.

In addition, the above-mentioned embodiment can also be carried out in the following embodiment which changed this as appropriate.
-In the third embodiment, the number of the concave grooves 52 extending in the second direction D2 is not limited to one. When a plurality of recessed grooves 52 are provided, it is preferable that the width of the convex portion 53 between the recessed grooves 52 parallel to each other and adjacent to each other is the same as or wider than the width of the non-slip tape 20b. As a result, the non-slip tape 20b can be laid on the convex portion 53.

-In the second embodiment, the number of concave rows 42 extending in the second direction D2 is not limited to three. When a plurality of concave rows 42 are provided, it is preferable that the concave rows 42 are parallel to each other and the width of the convex portions 44 between the concave rows 42 adjacent to each other is the same as or wider than the width of the non-slip tape 20b. As a result, the non-slip tape 20b can be laid on the convex portion 44.

-In the first to third embodiments, the non-slip tape 20b may be laid on the grounding board 30 along the first direction D1 and the second direction D2.
-In the second embodiment, the non-slip tape 20b may be laid so as to be wider than the width of the recesses 43 constituting the concave row 42 so as to close the openings of the recesses 43.

-The pallet 1 may be a double-sided use type pallet in which both sides are set as loading surfaces in a two-way type pallet, or may be a single-sided use type or a double-sided use type four-way type pallet.
-The overall shape of the pallet may be a shape other than the rectangular parallelepiped shape.
-The pallet is not limited to the one in which the upper pallet forming member 2 and the lower pallet forming member 3 are bonded and joined, and may be integrally molded.

1 ... pallet, 2 ... upper pallet forming member, 3 ... lower pallet forming member, 4 ... outlet, 5 ... end girder, 6 ... intermediate girder, 20 ... deck board, 20a ... loading surface, 20b ... non-slip tape, 21 ... Upper girder, 21a ... Upper end girder, 21b ... Upper middle girder, 22 ... Lattice rib, 26 ... Rib, 27 ... Outer wall, 30 ... Ground board, 30a ... Ground surface, 31 ... Lower girder, 31a ... Lower end Girder, 31b ... Lower intermediate girder, 32 ... Opening, 33 ... Lower insertion port component, 33a ... Opening end, 33b ... Intermediate, 34 ... Lower plate, 34a ... Lower plate, 35 ... Upper plate , 36 ... Hollow part, 36a ... First hollow part, 36b ... Second hollow part, 37 ... Partition wall, 38 ... Injection mark, 39 ... Guide part, 40a ... Ground plane, 41 ... Lower insertion port component part, 42 Concave row, 43 ... concave, 44 ... convex, 45 ... lower plate, 45a ... lower plate, 46 ... upper plate, 47 ... hollow, 48 ... partition, 48a ... hollow, 50a ... ground plane, 51 ... lower insertion port component, 52 ... concave groove, 53 ... convex portion, 54 ... lower plate portion, 54a ... lower plate portion, 55 ... upper plate portion, 56 ... hollow portion, 57 ... partition wall.

Claims (2)

Deck board and
The grounding board facing the deck board and
A plurality of digits connecting the deck board and the grounding board,
It is equipped with an outlet configured between the adjacent girders.
The space between the adjacent girders on the grounding board is an insertion port component that constitutes the lower part of the insertion port.
The outlet component is
A lower plate portion that constitutes a ground plane as a flat surface flush with the bottom surface of the girder in the entire area between the adjacent girders.
The upper plate portion facing the insertion port and facing the lower plate portion,
A plurality of hollow portions formed between the lower plate portion and the upper plate portion,
A partition wall for partitioning each of the plurality of hollow portions is provided between the lower plate portion and the upper plate portion.
The lower plate portion is provided with the same number of injection marks of the injection port for injecting gas into the hollow portion at positions separated from the outer periphery of the girder in the flat surface of the lower plate portion .
The injection marks are located one below each of the plurality of hollow portions in the lower plate portion .
One end of the partition wall is located on one of the adjacent girders on the girder side and inside the insertion direction of the fork inserted into the insertion port.
The other end of the partition wall is located on the other girder side of the adjacent girders and outside the insertion direction.
palette. The pallet is formed by abutting and connecting the upper pallet forming member and the lower pallet forming member.
The upper pallet forming member includes an upper intermediate girder located between the upper end girder arranged at the end of the deck board and the upper end girder toward the lower pallet forming member.
The lower pallet forming member includes a lower intermediate girder located between the lower end girder arranged at the end of the grounding board and the lower end girder toward the upper pallet forming member.
The upper end girder and the lower end girder are butted against each other, and the upper middle girder and the lower middle girder are abutted to form the girder.
The pallet according to claim 1 , wherein the space between the lower end girder and the lower intermediate girder on the grounding board is the insertion port component.

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