JP2023111143A - Pallet - Google Patents

Abstract

To provide a pallet capable of preventing deformation and damage of the pallet due to impingement of a tip of a fork.SOLUTION: Since a plurality of guide ribs 20 are provided at upper opening edges of a pair of fork insertion holes 11 in a pallet 10A, forks are smoothly guided into the fork insertion holes 11 even if the forks abut thereon. Enclosures 40A are provided at upper opening edges of the fork insertion holes 11. The forks are prevented from entering between the guide ribs 20 and girders 30, and ends of the upper opening edges are reinforced by the enclosures 40A. This prevents deformation and damage of the pallet 10A, which have been a problem in the past.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a resin pallet in which a plurality of girder portions hang down from a deck board of crosspiece structure, and fork insertion holes are provided between adjacent girder portions.

Conventionally, as this type of pallet, there has been known a pallet provided with a guide slope for guiding the forks at the upper opening edge of the fork insertion hole (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2002-120840 (Figs. 7 and 8)

However, in the above-described conventional pallet, the fork may collide with the lateral edge of the upper opening edge of the fork insertion hole and the pallet may be deformed or damaged.

The invention of claim 1, which has been made to solve the above-mentioned problems, is a resin pallet in which a plurality of girder parts hang down from a deck board of a beam structure, and a fork insertion hole is formed between the adjacent girder parts. At the upper opening edge of the fork insertion hole, a vertical wall extending between the adjacent girder portions and facing outward from the inside of the fork insertion hole and between the adjacent girder portions a horizontal wall extending across the vertical wall and connected to the upper end of the outer surface of the vertical wall, the upper surface of which forms part of the cargo loading surface of the deck board; It is provided at a plurality of positions along the fork insertion hole and has a plate shape connected to the vertical wall and the horizontal wall. A housing including a plurality of guide ribs forming inclined first guide slopes, and a first reinforcing wall provided at a longitudinal end of the upper opening edge and connected to the vertical wall and the horizontal wall. A housing portion of the structure and a pallet provided with.

The invention according to claim 2 is the pallet according to claim 1, wherein the housing portion includes the beam portion, the vertical wall, and a second reinforcing wall connected to the first reinforcing wall.

The invention of claim 3 is the invention according to claim 2, wherein the casing includes a plurality of the first reinforcing walls, and the second reinforcing wall is connected to the lower ends of the plurality of first reinforcing walls. palette.

The invention of claim 4 is any one of claims 1 to 3, wherein the housing portion includes a third reinforcing wall connected to the girder portion, the horizontal wall, and the first reinforcing wall. A pallet according to claim 1.

In the fifth aspect of the present invention, the surface of the housing portion facing the side opposite to the vertical wall forms a second guide slope that slopes toward the inner side of the fork insertion hole as it goes downward. The pallet according to any one of claims 1 to 3, wherein the inclination angle of the second guide slope with respect to is smaller than the inclination angle of the first guide slope with respect to the vertical direction.

In the pallet of claim 1, since the upper opening edge of the fork insertion hole is provided with a plurality of guide ribs, the fork can be smoothly guided to the fork insertion hole even if it comes into contact with the fork. Here, in the conventional pallet, at the end of the upper opening edge of the fork insertion hole, the fork may enter between the guide rib and the girder, and the pallet may be deformed or damaged. Since the housing is provided at the end of the upper opening edge, the fork is prevented from protruding between the guide rib and the girder and is reinforced. is prevented.

Here, the housing may have a structure that is open in one or both of the vertical directions, or may have a structure that is closed at both ends or one end in the vertical direction and is open in the horizontal direction. Further, the housing may or may not be connected to the girder, but is preferably connected to the girder from the viewpoint of strength. Specifically, as the housing portion connected to the girder portion, the first reinforcing wall and the second reinforcing wall connected to the first reinforcing wall, the girder portion, and the vertical wall are provided as in claim 2. A configuration including a reinforcing wall, or a configuration in which a plurality of first reinforcing walls are included in the configuration, and a second reinforcing wall is connected to the lower ends of the plurality of first reinforcing walls (configuration of claim 3 ), or a configuration including a first reinforcing wall and a third reinforcing wall connected to the first reinforcing wall, the girder, and the horizontal wall, as in claim 4.

In the pallet of claim 5, the surface of the housing portion facing the opposite side of the vertical wall is the second guide slope that slopes toward the inner side of the fork insertion hole as it goes downward, so that the fork can be The shock when hitting the housing is released, and the deformation and damage of the housing are suppressed.

In addition, in the pallet according to any one of claims 1 to 5, "a structure including an inclined guide wall that bends obliquely downward from the lower end of the vertical wall toward the far side of the fork insertion hole." ' may be used. In addition, by constructing that "the surface of the inclined guide wall facing the outside of the fork insertion hole and the first guide slope are flush with each other", the fork can be smoothly inserted deep into the fork insertion hole. .

1 is a perspective view of a pallet according to a first embodiment of the present disclosure; FIG. Perspective view of the entrance to the fork insertion hole of the pallet Perspective view including side cross section of pallet Perspective view including side cross section of pallet Perspective view including flat cross section of pallet (A) Perspective view of the housing part of the pallet of the second embodiment, (B) Perspective view of the housing part of the pallet of the third embodiment (A) Perspective view of the housing part of the pallet of the fourth embodiment, (B) Perspective view of the housing part of the pallet of the fifth embodiment (A) Perspective view of the casing of the pallet of the sixth embodiment, (B) Perspective view of the casing of the pallet of the seventh embodiment (A) Perspective view of the casing of the pallet of the eighth embodiment, (B) Perspective view of the partially broken casing of the pallet of the eighth embodiment

[First embodiment]
The pallet 10A of the first embodiment shown in FIGS. 1 to 5 will be described below. The pallet 10A of this embodiment is a resin injection-molded product, and as shown in FIG. is making Also, the deck board 12 has, for example, a rectangular shape with different vertical and horizontal sizes. Hereinafter, the longitudinal direction of the deck board 12 will be referred to as the vertical direction H1, and the lateral direction will be referred to as the horizontal direction H2. In addition, the deck board 12 of this embodiment may be square.

A plurality of girders 30 are arranged in 3 rows and 3 columns at the center of the deck board 12, at the four corners, and at the centers of the outer edges of the four sides. In addition, the girder 30 has a structure with reinforcing ribs 30N inside the rectangular tubular wall 30S, and the side surfaces of the three girder 30 arranged along each outer edge of the deck board 12 are arranged in the same plane. (That is, they are arranged flush with each other), and are also the side surfaces 30A of the entire pallet 10A.

A fork insertion hole 11 is provided between the adjacent girder portions 30, and a pair of forks of a forklift are inserted from any direction of the vertical direction H1 and the horizontal direction H2. Further, four corners of each girder 30 when viewed from above are chamfered. The chamfered surfaces of the girder portions 30 located at the intersections of the inner side surfaces 30B of the fork insertion holes 11 are so-called C-chamfered surfaces that are inclined at an angle of 45° with respect to the inner side surfaces 30B of the fork insertion holes 11. It has become. Further, the chamfered surfaces of the girder portions 30 positioned at the intersections of the side surfaces 30A of the pallet 10A are arcuate so-called R-chamfered surfaces. Furthermore, as shown in FIG. 2, the chamfered surface located at the intersection of the side surface 30A of the pallet 10A and the inner surface 30B of the fork insertion hole 11 is gently inclined with respect to the inner surface 30B of the fork insertion hole 11. Moreover, it is a side guide surface 30C that is rounded and continues to the inner surface 30B of the fork insertion hole 11 .

As shown in FIG. 1, the plurality of lower end connecting portions 50 extend in the vertical direction H1 or the horizontal direction H2 and connect the lower end portions of adjacent girder portions 30 as described above. Further, as shown in FIG. 2, the lower end connecting portion 50 has a structure having lattice-like ribs 52 on the lower surface of the cover wall 51 . Furthermore, as shown in FIG. 3, the lower end connecting portion 50 has a lower edge guide surface 50C that is gradually inclined downward at both ends in the penetrating direction of the fork insertion hole 11 (both ends in the vertical direction H1 in FIG. 3). Prepare. In addition, corners where the upper surface of the lower end connecting portion 50 intersects with the inner surface 30B and the side guide surface 30C of the girder portion 30 are chamfered.

As shown in FIG. 1, the deck board 12 has a crosspiece structure having a plurality of ribs. In addition, a first crosspiece 60 that connects between the girder portions 30 at the outer edge portion of the deck board 12 and extends in the longitudinal direction H1 and the horizontal direction H2 from the central girder portion 30 to connect between the girder portions 30. The structures of the second crosspiece 61 and the third crosspiece 62 surrounded by the first crosspiece 60 and the second crosspiece 61 are different.

Each second crosspiece 61 is formed by extending a plurality of beams 61A having a square groove structure with an open bottom surface between a pair of girder portions 30 .

Each third crosspiece 62 has a plurality of ribs 13 extending in the vertical direction H1 or the horizontal direction H2 and orthogonal to each other, forming a grid structure with a plurality of square cells. Both the plurality of ribs 13 extending in the vertical direction H1 and the plurality of ribs 13 extending in the horizontal direction H2 are extended to the outer edge of the deck board 12 and form part of each first crosspiece 60. As shown in FIG.

Each first crosspiece 60 spans between the plurality of ribs 13 and a pair of girder portions 30, is orthogonal to the plurality of ribs 13, and is arranged in parallel at intervals narrower than the interval between the ribs 13. A plurality of ribs 14 are provided. Further, as shown in FIG. 3, the outermost rib 14 among the plurality of ribs 14, that is, the rib 14 facing outward from the inside of the fork insertion hole 11 extends from the upper end to the middle position in the vertical direction on the side surface of the pallet 10A. A vertical wall 15 parallel to 30A is formed, and an inclined guide wall 16 is bent obliquely downward from the vertical wall 15 toward the inner side of the fork insertion hole 11 from the middle position in the vertical direction to the lower end. The fork is guided into the fork insertion hole 11 by an upper edge guide surface 16G of the inclined guide wall 16 facing the outside of the fork insertion hole 11 . In addition, in the penetrating direction of the fork insertion hole 11, the inclined guide wall 16 is positioned in the middle of the side guide surface 30C of the girder portion 30, and the upper edge guide surface 16G of the inclined guide wall 16 and the side guide surface 30C intersect. is formed with an R-chamfered surface 16R.

The vertical wall 15 is positioned inside the fork insertion hole 11 from the side surface 30A of the pallet 10A. A horizontal wall 17 extends horizontally outward from the upper end of the vertical wall 15 . The horizontal wall 17 is formed continuously over the entire outer edge of the deck board 12, as shown in FIG. there is Moreover, the horizontal wall 17 protrudes slightly from the side surface 30A of the pallet 10A. In addition, the entire outer edge portion of the lower end of the pallet 10A is also provided with a lower end protrusion 50T slightly protruding from the side surface 30A of the pallet 10A.

A plurality of guide ribs 20 are provided along the longitudinal direction at the upper opening edge of the fork insertion hole 11 penetrating in the longitudinal direction H1. As shown in FIG. 2, the plurality of guide ribs 20 have a plate-like shape connected to the vertical wall 15 and the horizontal wall 17, and the surface facing the opposite side of the vertical wall 15 extends downward toward the fork insertion hole 11. As shown in FIG. The first guide slope 20G is inclined toward the depth side. Also, the first guide slope 20G is flush with the upper edge guide surface 16G of the inclined guide wall 16 .

A pair of housing portions 40A are provided at both lateral ends of the upper opening edge of the fork insertion hole 11 . The housing portion 40A includes a pair of first reinforcing walls 41 connected to the vertical wall 15 and the horizontal wall 17 in the same manner as the guide ribs 20, side guide surfaces 30C of the girder portion 30, the vertical wall 15, and a pair of first reinforcing walls 41. A second reinforcing wall 42 connected to the lower end of one reinforcing wall 41 is included. Specifically, the second reinforcing wall 42 is located slightly above the upper edge guide surface 16G, and as shown in FIGS. become one. 3 and 4, in the opening width direction of the fork insertion hole 11, one first reinforcing wall 41 is positioned near the upper end portion of the chamfered surface 16R, and the other first reinforcing wall 41 is positioned near the upper end portion of the chamfered surface 16R. is located closer to the center of the opening width direction of the fork insertion hole 11 than the chamfered surface 16R. Furthermore, the tip surface of the pair of first reinforcing walls 41 forms a second guide slope 41G that slopes toward the inner side of the fork insertion hole 11 as it goes downward, and the upper end of the guide slope 41G is the tip of the horizontal wall 17. , and the lower end is located at the tip of the second reinforcing wall 42 . In addition, the inclination angle of the second guide slope 41G with respect to the vertical direction is smaller than the inclination angle of the first guide slope 20G with respect to the vertical direction.

As shown in FIG. 1, in the pallet 10A of the present embodiment, the upper opening edge of the fork insertion hole 11 penetrating in the horizontal direction H2 has a structure different from the upper opening edge of the fork insertion hole 11 penetrating in the vertical direction H1. , but they may be the same.

The description about the structure of the pallet 10A of this embodiment is above. Next, the effects of this pallet 10A will be described. In this pallet 10A, when forks are inserted into the pair of fork insertion holes 11 from the longitudinal direction H1, the upper opening edges of the pair of fork insertion holes 11 are provided with a plurality of guide ribs 20. is smoothly guided to the fork insertion hole 11 even if it abuts. Moreover, since the upper edge guide surface 16G of the inclined guide wall 16 bent from the lower end of the vertical wall 15 and the first guide slope 20G of the guide rib 20 are flush with each other, the fork can be pushed all the way into the fork insertion hole 11. inserted smoothly.

By the way, in a conventional pallet, the pallet may be deformed or damaged when the tip of the fork enters between the guide rib 20 and the girder 30 at the lateral end of the upper opening edge of the fork insertion hole. Ta. On the other hand, in the pallet 10A of the present embodiment, the housing portion 40A is provided at the end of the upper opening edge of the fork insertion hole 11 to prevent the fork from protruding between the guide rib 20 and the girder portion 30. The pallet 10A is prevented from being deformed and damaged, which has been a conventional problem. Further, the surface of the housing portion 40A facing away from the vertical wall 15 is a second guide slope 41G that slopes toward the inner side of the fork insertion hole 11 as it goes downward, so that the fork can move toward the housing. The shock when hitting the body part 40A is released, and the deformation and breakage of the housing part 40A are suppressed.

The amount by which the wall portion constituting the housing portion 40A protrudes from the vertical wall 15 decreases as the inclination angle of the second guide slope 41G with respect to the vertical direction increases. Since the angle is smaller than the inclination angle of the first guide slope 20G with respect to the vertical direction, a large amount of protrusion of the vertical wall 15 is ensured, and a high reinforcing effect can be obtained.

[Second embodiment]
The pallet 10B of the present embodiment shown in FIG. 6A is provided with a housing portion 40B having a structure in which a reinforcing wall 43 is added to the housing portion 40A described in the first embodiment. Differs from one embodiment. The reinforcing wall 43 is located in the vertical middle portion of the housing portion 40B, is arranged parallel to the second reinforcing wall 42, is perpendicular to the pair of first reinforcing walls 41, and extends between the girder portion 30 and the vertical wall 15. and connected to. Further, the tip end face of the reinforcing wall 43 is located closer to the vertical wall 15 than the tip end face of the second reinforcing wall 42 .

[Third embodiment]
The pallet 10C of this embodiment shown in FIG. 6(B) is a housing having a structure in which a pair of reinforcing walls 43C are arranged in a diagonal manner in two chambers in the housing section 40A described in the first embodiment. It differs from the first embodiment in that a body portion 40C is provided.

[Fourth embodiment]
In the pallet 10D of this embodiment shown in FIG. 7A, the first reinforcing wall 41 on the side away from the girder portion 30 in the housing portion 40A described in the first embodiment is curved, and the second reinforcing wall 41 is curved. A housing portion 40D having a structure changed to a reinforcing wall 41D that is continuous with the wall 42 and orthogonal to the horizontal wall 17 is provided.

[Fifth embodiment]
The housing part 40E of the pallet 10E of the present embodiment shown in FIG. 7(B) has the first reinforcing wall 41 and the second reinforcing wall 42 separated from the girder part 30 in the housing part 40B of the second embodiment. A curved portion 41D is formed by chamfering the corners of .

[Sixth embodiment]
In the case part 40F of the pallet 10F of this embodiment shown in FIG. It is inclined toward the inner side of the fork insertion hole 11 as it moves away from the girder 30 in the width direction.

[Seventh embodiment]
The housing portion 40G of the pallet 10G of this embodiment shown in FIG. 8B is inclined with respect to the vertical direction, and communicates between the side guide surface 30C of the girder portion 30 and the lower surface of the horizontal wall 17. It also has a reinforcing wall 45 connected to the vertical wall 15 , and the reinforcing wall 45 , the horizontal wall 17 and part of the girder 30 form a triangular housing portion 40</b>G.

[Eighth embodiment]
The housing portion 40H of the pallet 10H of the present embodiment shown in FIGS. 9A and 9B has a third reinforcing wall 46 that closes the entire front surface of the housing portion 40A described in the first embodiment. It has a structure with an open top. Further, the second reinforcing wall 42 is provided with a pair of through holes 42A penetrating vertically.

[Other embodiments]
(1) The pallet 10A of the first embodiment includes the housing portion 40A at both ends of the upper opening edges of the fork insertion holes 11. For example, among the upper opening edges of the pair of fork insertion holes 11 A configuration in which only the ends on the side closer to each other or only the ends on the side farther from each other are provided with the housing portions 40A may be employed.

(2) In the pallet 10A of the first embodiment, the pair of fork insertion holes 11 penetrate in both the vertical direction H1 and the horizontal direction H2, but they may penetrate only in one direction.

(3) The pallet 10A of the first embodiment has a plurality of lower end connecting portions 50 on the lower surface, but the entire lower surface may be a single plate-like member, and the lower end connecting portion 50 is also a plate-like member. The lower end of the girder portion 30 may be a free end.

Although specific examples of the technology included in the scope of claims are disclosed in the specification and drawings, the technology described in the scope of claims is not limited to these specific examples. Various modifications and changes of the examples are included, and a part of specific examples is also included.

10A~10H Pallet 11 Fork insertion hole 12 Deck board 15 Vertical wall 16 Inclined guide wall 16G Upper edge guide surface 17 Horizontal wall 20 Guide rib 20G First guide slope 30 Girder 40A~40H Case part 41 First reinforcing wall 41G Second Guide slope 42 Second reinforcing wall 43, 43C, 45 Reinforcing wall 46 Third reinforcing wall

Claims (5)

A resin pallet having a plurality of girders hanging down from a deck board having a crosspiece structure, and having a fork insertion hole between the adjacent girders,
At the upper opening edge of the fork insertion hole,
a vertical wall extending between the adjacent girder portions and facing outward from the inside of the fork insertion hole;
a horizontal wall extending between the adjacent girder portions and connected to the upper end portion of the outer surface of the vertical wall, the upper surface of which forms part of the load carrying surface of the deck board; ,
It is provided at a plurality of positions along the longitudinal direction of the upper opening edge, and has a plate shape connected to the vertical wall and the horizontal wall, and the fork insertion is performed as the surface facing the opposite side of the vertical wall goes downward. a plurality of guide ribs forming first guide slopes that slope toward the innermost side of the hole;
a housing part having a housing structure including a first reinforcing wall provided at the longitudinal end of the upper opening edge and connected to the vertical wall and the horizontal wall. 2. The pallet according to claim 1, wherein said housing portion includes a second reinforcing wall connected to said girder portion, said vertical wall and said first reinforcing wall. 3. The pallet according to claim 2, wherein the housing portion includes a plurality of the first reinforcing walls, and the second reinforcing wall is connected to lower ends of the plurality of first reinforcing walls. The pallet according to any one of claims 1 to 3, wherein the housing portion includes a third reinforcing wall connected to the girder portion, the horizontal wall, and the first reinforcing wall. . A surface of the housing portion that faces the side opposite to the vertical wall forms a second guide slope that slopes toward the inner side of the fork insertion hole as it goes downward,
The pallet according to any one of claims 1 to 3, wherein the inclination angle of the second guide slope with respect to the vertical direction is smaller than the inclination angle of the first guide slope with respect to the vertical direction.

Images