JP2020152431A - Synthetic resin pallet - Google Patents

Abstract

To suppress a deformation of a reinforcing rib provided on an inner surface of a girder of a synthetic resin pallet on an outer wall side, prevent peeling of a welded surface, suppress a deformation of the outer wall of a girder peripheral wall of the synthetic resin pallet, and improve an impact resistance and durability of the outer wall of the girder.SOLUTION: A synthetic resin pallet 1 is provided with an outside wall reinforcing rib 7 at the same height as a side end girder 4 on an inner side surface 41 of a side part outer wall 40 of the side end girder 4 installed at a side end part between an upper deck board 21 and a lower deck board 22, and the outside wall reinforcing rib 7 has a vertical rib 71 extending from the inner side surface 41 of the side part outer wall 40, and a lateral rib 72 extending from the vertical rib 71 in a direction different from the vertical rib 71.SELECTED DRAWING: Figure 2

Description

The present invention relates to a synthetic resin pallet for a forklift used for storing and transporting luggage, and more particularly to a synthetic resin pallet having a hollow girder structure.

Conventionally, as a synthetic resin pallet for forklifts used for storing and transporting luggage, the upper deck board and the lower deck board are connected by a girder, and a fork insertion hole is formed in the space between the girders. A hollow pallet with closed walls is used. The main manufacturing method of these synthetic resin pallets is to use an injection molding machine to butt, weld and integrate the pallet molding members that are molded into a shape that is divided into upper and lower parts at the middle part of the girder. There is.

Such synthetic resin pallets are required to be lightweight in order to be easy to handle and to reduce distribution costs.

Further, since such a synthetic resin pallet is transported by a forklift, the pallet is often damaged due to peeling of welding, opening of holes, etc. due to the impact due to contact with the claws of the forklift. The main cause of damage is that the forklift driver often accidentally hits it. Once the synthetic resin pallet is damaged due to peeling of welding or holes, the parts and members cannot be replaced or repaired, so that the pallet cannot be used. Therefore, the synthetic resin pallet has a very important performance requirement for improving impact resistance.

Then, on the inner wall surface of the girder peripheral wall facing the fork insertion hole, which easily comes into contact with the claws of the forklift, the wall thickness of the girder peripheral wall should be increased and reinforcing ribs perpendicular to the girder peripheral wall should be provided in order to improve impact resistance. It is being set up (Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-341856

However, in addition to the reasons described above, the pallet is damaged by intentionally pushing the side wall of the pallet, in other words, the outer wall of the girder peripheral wall of the pallet, with the claws of the forklift for the purpose of aligning the pallet. In some cases. The damage caused in this way includes cracks, cracks or chips on the side wall of the pallet, and peeling of the welded surface of the reinforcing rib provided on the side wall of the pallet or inside the girder.

Further, in order to improve the impact resistance and durability of the synthetic resin pallet, the wall thickness of the girder peripheral wall should be increased, the pitch of the reinforcing ribs formed inside the girder should be narrowed, and the number of reinforcing ribs should be increased. By increasing the number of ribs, lengthening the reinforcing ribs, and connecting the reinforcing ribs between the inner side wall and the outer wall of the girder peripheral wall, it is possible to reinforce the girder peripheral wall and suppress deformation. However, since a large amount of synthetic resin is used, there is a problem that the weight of the pallet increases despite the weight reduction.

Therefore, one of the objects of the present invention is to suppress the deformation of the reinforcing ribs provided inside the girder on the outer wall side of the girder of the synthetic resin pallet and prevent the welded surface of the reinforcing ribs from peeling off.

Another object of the present invention is to suppress deformation of the outer wall of the girder peripheral wall of the synthetic resin pallet and improve the impact resistance of the outer wall of the girder.

Another object of the present invention is to suppress an increase in the weight of the synthetic resin pallet, suppress deformation of the outer wall of the girder peripheral wall of the synthetic resin pallet, and improve impact resistance.

Another purpose is to improve the durability of the synthetic resin pallet.

In the present invention as a means for solving the above problems, an upper deck board and a lower deck board are connected by a girder having a hollow structure, and in a space surrounded by the girder, the upper deck board and the lower deck board. An outer wall reinforcing rib having the same height as the girder is provided on the inner surface of the outer wall of the girder installed between the upper deck board and the lower deck board, which constitutes a fork insertion hole. , The vertical ribs extending from the inner surface of the outer wall and the horizontal ribs extending from the vertical ribs in a direction different from the direction in which the vertical ribs are extended are provided. It is a characteristic synthetic resin pallet.

Further, the upper deck board and the lower deck board are connected by a girder having a hollow structure, and a fork insertion hole is formed in a space surrounded by the girder, the upper deck board and the lower deck board, and the upper deck board and the lower deck board are formed. An outer wall reinforcing rib having the same height as the side end girder is provided on the inner side surface of the side outer wall of the side end girder installed at the side end between the lower deck boards, and the outer wall reinforcing rib is provided on the side. The feature is that the vertical ribs extending from the inner side surface of the outer wall of the portion and the horizontal ribs extending from the vertical ribs in a direction different from the direction in which the vertical ribs are extended are provided. It is a synthetic resin pallet.

Further, in the synthetic resin pallet, the horizontal rib is a synthetic resin pallet extending from the tip of the vertical rib and installed.

Further, in the synthetic resin pallet, the horizontal rib is a synthetic resin pallet extending from the intermediate portion of the vertical rib and installed.

Further, in the synthetic resin pallet, the horizontal ribs are symmetrically installed on both sides of the vertical ribs.

Further, in the synthetic resin pallet, the horizontal ribs are asymmetrically installed on both sides of the vertical ribs.

Further, in the synthetic resin pallet, the horizontal rib is a synthetic resin pallet having a shape different from that of the vertical rib and extending from the vertical rib.

Further, in the synthetic resin pallet, the synthetic resin pallet is characterized in that the horizontal rib is installed at a position where the vertical rib is first deformed when the outer wall of the side portion is pressed. is there.

According to the present invention as described above, it is possible to suppress the deformation of the reinforcing ribs provided inside the girder on the outer wall side of the girder of the synthetic resin pallet and prevent the welded surface of the reinforcing ribs from peeling off. It was.

Further, by suppressing the deformation of the reinforcing ribs provided inside the girder on the outer wall side of the girder peripheral wall of the synthetic resin pallet, it is possible to suppress the deformation of the outer wall and improve the impact resistance. ..

Further, it is possible to suppress the increase in the weight of the synthetic resin pallet and the deformation of the outer wall of the girder peripheral wall of the synthetic resin pallet to improve the impact resistance.

In addition, it has become possible to improve the durability of the synthetic resin pallet.

Perspective view of an embodiment of the present invention FIG. 1A is a partial view of a cross section of FIG. 1A, which is a cross-sectional view showing a right front 1/4 portion of an embodiment of the present invention. FIG. 1BB sectional view Other examples of outer wall reinforcing ribs Cross-sectional view

In the present invention, the upper deck board and the lower deck board are connected by a girder having a hollow structure, and a fork insertion hole is formed in a space surrounded by the girder, the upper deck board and the lower deck board, and the upper deck is formed. An outer wall reinforcing rib having the same height as the girder is provided on the inner surface of the outer wall of the girder installed between the board and the lower deck board, for example, the side outer wall of the side end girder. Made of synthetic resin including vertical ribs extending from the inner surface of the outer wall and horizontal ribs extending from the vertical ribs in a direction different from the direction in which the vertical ribs are extended. It is a palette.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a synthetic resin pallet (hereinafter referred to as “pallet”) 1, FIG. 2 is a horizontal cross-sectional view showing a right front 1/4 portion of the pallet, and FIGS. 1A and 1A are required. It is a partially enlarged sectional view, FIG. 1BB sectional view, FIG. 4 is a horizontal sectional view which shows the Example of the outer wall reinforcing rib. The line showing the BB cross section is also shown in FIG. 2 to clarify the position.

In the pallet 1, as shown in FIG. 1, the upper deck board 21 and the lower deck board 22 are connected by the side end girders 4 at both end ends and the intermediate girder 5 provided in the middle thereof, and the upper deck board 21 and the lower deck board are connected. This is a two-way insertion pallet in which a fork insertion hole 6 is formed in a space surrounded by 22, a side end girder 4, and an intermediate girder 5. The outer wall 3 of the pallet 1 faces the opening of the fork insertion hole 6 of the side end girder 4, the side end girder 4, and the side end girder 5, which does not face the fork insertion hole 6. It is composed of a wall 400. That is, the outer wall 3 of the pallet 1 is the outer wall of the girder.

As shown in FIGS. 1 and 3, the pallet 1 is integrated by welding the upper pallet member 11 and the lower pallet member 12 so as to face each other with the upper deck board 21 and the lower deck board 22 facing outward. It is composed of. The side end girders 4 are formed by a side end girder member 401 extending inward (downward in the drawing) from the upper deck board 21 of the upper pallet member 11 and inside from the lower deck board 22 of the lower pallet member 12. The side end girder member 402 extending toward (upward in the figure) is welded and integrated. Further, as shown in FIG. 1, the intermediate girder 5 is inward from the intermediate girder member 501 extending inward from the upper deck board 21 of the upper pallet member 11 and the lower deck board 22 of the lower pallet member 12. An intermediate girder member 502 extending toward the surface is welded and integrated.

As shown in FIGS. 2 and 3, the inner side surface 41 of the side outer wall 40, which constitutes a part of the outer wall 3 and does not face the fork insertion hole 6 of the side end girder 4, has the side end girder 4. An outer wall reinforcing rib 7 having the same height is provided. The outer wall reinforcing rib 7 is a rib for suppressing the deformation of the reinforcing rib provided inside the girder on the outer wall 3 side of the pallet 1, and further suppresses the deformation of the outer wall 3 of the pallet 1 and has impact resistance. It is a rib for improving.

The outer wall reinforcing rib 7 is formed between the upper deck board 21 and the lower deck board 22, and has the same height as the space between the upper deck board 21 and the lower deck board 22. The outer wall reinforcing rib 7 extends from the inner side surface 41 of the side outer wall 40 of the side end girder 4 toward the inner side wall 49 of the side end girder facing the fork insertion hole 6 of the side end girder 4. And the horizontal ribs 72 extending in a direction different from the direction in which the vertical ribs 71 are extended from the vertical ribs 71. Therefore, the vertical rib 71 and the horizontal rib 72 are also configured between the upper deck board 21 and the lower deck board 22, respectively. Further, the outer wall reinforcing rib 7 does not extend to the inner side wall 49 of the side end girder and does not contact the inner side wall 49 of the side end girder.

As shown in FIG. 4, when the horizontal rib 72 has a shape different from that of the vertical rib 71, at least one side of the horizontal rib 72 protrudes in a direction different from the direction in which the vertical rib 71 is extended. Therefore, in the "horizontal ribs extending in a direction different from the direction in which the vertical ribs are extended from the vertical ribs", the vertical ribs 71 are extended in different directions with the same cross-sectional shape as the vertical ribs 71. In addition to the horizontal ribs 72 formed, the horizontal ribs 72 having a cross-sectional shape different from that of the vertical ribs 71 and extending from the vertical ribs 71 are included.

The outer wall reinforcing rib 7 is made to have the same height as the side end girder 4, and is composed of the vertical rib 71 and the horizontal rib 72 protruding from the vertical rib 71, so that the lift claws come into contact with the side outer wall 40. Even in such a case, the deformation of the outer wall reinforcing rib 7 is prevented, and as a result, the deformation of the side outer wall 40 is also prevented.

That is, when the side outer wall 40 is pressed from the outside by the claws of the forklift or the like, the side outer wall 40 is recessed inward. Then, as the side outer wall 40 is deformed, the outer wall reinforcing rib 7 also tries to be deformed. At this time, if there is no configuration for suppressing the deformation of the vertical rib 71, the vertical rib 71 advances, the tip falls, the middle portion bends, and the vertical rib 71 bends and deforms in an arc shape or an S shape in a plan view, and the bending starts. At the same time, the reaction force tends to decrease, the function as a rib is reduced, and it becomes impossible to prevent deformation or breakage of the outer wall and peeling of the welded surface of the rib. However, since the horizontal rib 72 protruding from the vertical rib 71 resists the deformation direction of the vertical rib 71, the bending deformation of the vertical rib 71 can be minimized, the reaction force becomes high, and the side It is possible to suppress and prevent deformation and breakage of the outer wall 40 and peeling of the welded surface of the rib.

Therefore, in the pallet of the present invention, the bending of the ribs can be reduced, so that the deformation of the girder wall can be prevented, the wall thickness of the girder wall can be reduced, and the synthetic resin material can be saved. The weight of the pallet can be reduced.

As shown in FIG. 2, the outer wall reinforcing rib 7 has a configuration in which the vertical rib 71 extends in the direction orthogonal to the side outer wall 40, and the vertical rib 71 to the horizontal rib 72 are provided in the orthogonal direction. From the tip and the middle portion of the rib 71, three horizontal ribs 72 are provided from the same position on both sides of the vertical rib 71. Although not shown, the vertical rib 71 may be extended in a direction not orthogonal to the side outer wall 40. Further, as shown in FIG. 4, the horizontal ribs 72 have one to three horizontal ribs 72 from the tip and / or intermediate portion of the vertical ribs 71, from the same positions on both sides of the vertical ribs 71, or from one side. It may be provided. Further, although not shown, four or more horizontal ribs 72 may be provided from the same position on both sides of the vertical rib 71 or from one side.

As described above, the outer wall reinforcing rib 7 may be installed with the horizontal rib 72 extending from the intermediate portion of the vertical rib 71, or may be installed extending from the tip, and further, the tip and the intermediate portion may be installed. It may be extended from and installed. Further, the horizontal ribs 72 may be installed symmetrically on both sides of the vertical ribs 71, or may be installed asymmetrically on both sides of the vertical ribs 71, and may be installed at different positions on both sides of the vertical ribs 71 in different directions. , Different lengths, different thicknesses, and different shapes. Further, it may be installed on only one side of the vertical rib 71. Further, the horizontal ribs 72 may be configured on the same side of the vertical ribs 71 in different directions, different lengths, different thicknesses, and different shapes. Further, the lengths of the vertical ribs 71 separated by the horizontal ribs 72 do not have to be uniform, but are preferably uniform.

When the horizontal rib 72 is installed at the tip of the vertical rib 71, the length L of the horizontal rib 72 is set to be at least twice the thickness W of the vertical rib 71, as shown in FIG. 4 (e). It is preferable that when the horizontal rib 72 is installed in the middle portion of the vertical rib 71, the length M of the horizontal rib 72 is one times the thickness W of the vertical rib 71 as shown in FIG. 4 (b). It is preferable to have the above length. Further, the thickness N of the horizontal rib 72 may be a thickness equal to or greater than the thickness W of the vertical rib 71 or a thickness less than or equal to the thickness W.

Further, although the vertical rib 71 is configured to have the same thickness from the side outer wall 40 to the tip in the cross-sectional view, the thickness may be varied. For example, the tip portion of the vertical rib 71 may be formed in a tapered shape, or the thickness of the tip portion may be made thicker or thinner than the other portions. In this case, for example, the portion in the tip direction of the horizontal rib 72 located in the middle portion of the vertical rib 71 can be made thicker than the other portions.

Depending on changes in conditions such as the length and thickness of the vertical rib 71, when the side outer wall 40 is pressed, the portion where the vertical rib 71 is initially deformed changes. Therefore, it is preferable that the horizontal rib 72 is installed at a position where the vertical rib 71 is first deformed when the side outer wall 40 is pressed. For example, when the tip of the rib 71 is deformed first, the horizontal rib 72 is installed at the tip or the tip of the vertical rib 71, and further, depending on the length of the vertical rib 71, the tip of the vertical rib 71 is bent or the like. By suppressing the deformation of the vertical rib 71, the deformation such as bending may move to the intermediate portion of the vertical rib 71. In this case, by installing the horizontal rib 72 in the intermediate portion of the vertical rib 71, Deformation such as bending of not only the tip but also the intermediate position can be prevented, and deformation of the outer wall reinforcing rib 7 can be prevented more effectively. When the intermediate portion of the vertical rib 71 is deformed first, it is preferable to install the horizontal rib 72 in the intermediate portion of the vertical rib 71 as the first horizontal rib 72.

To find out where the vertical ribs 71 first deform when the lateral outer wall 40 is pressed due to changes in the length and thickness of the vertical ribs 71, the polypropylene pallet is 5 mm thick outside. Vertical ribs with a length of 10 mm to 100 mm and a thickness of 3 mm to 5 mm are formed on the inner surface of the wall, and an iron circular compression plate that looks like a forklift claw from the outside of the outer wall is aligned with the installation position of the vertical ribs. It was pushed in by 5.5 mm and the shape of the deformation of the vertical ribs was observed. The results are shown in Table 1.

As can be seen from Table 1, the first deformation that occurs due to pressing is the deformation in which the vertical ribs up to a length of 30 mm go straight or the tip of the rib falls down, so that the tip or tip of the vertical rib 71 It is preferable to provide the lateral rib 72 in the portion. As a specific example of such an outer wall reinforcing rib 7, an outer wall reinforcing rib 7 having horizontal ribs 72 protruding from the tip of the vertical rib 71 on both sides, for example, an outer wall having a T-shaped cross section shown in FIG. 4 (e). Reinforcing rib 7 can be mentioned. On the other hand, in the case of a vertical rib having a length of 40 mm or more, the first deformation caused by being pressed is that the middle part of the rib is bent in an arc shape and is bent in an S shape or the tip is hardly moved. Since it is a deformation that bends in a character shape, it is preferable to install the horizontal rib 72 in the middle portion of the vertical rib 71. As a specific example of such a rib, an outer wall reinforcing rib 7 provided with horizontal ribs 72 protruding from the middle portion of the vertical rib 71 on both sides, for example, the outer wall reinforcing rib 7 shown in FIGS. 4A to 4D. Can be mentioned.

Further, the outer wall reinforcing rib 7 can have various shapes as shown in FIG. FIG. 4 is a cross-sectional view of the outer wall reinforcing rib 7 protruding from the side outer wall 40. FIG. 4A shows a configuration in which a plurality of horizontal ribs 72 are symmetrically installed on both sides of the vertical ribs 71 in the middle portion from the tip of the vertical ribs 71. FIG. 4B shows a configuration in which one horizontal rib 72 is symmetrically installed on both sides of the vertical rib 71 in the middle portion of the vertical rib 71. In FIG. 4C, one horizontal rib 72 is provided symmetrically on both sides of the vertical rib 71 in the middle portion of the vertical rib 71, and the lengths of the vertical rib 71 separated by the horizontal rib 72 are evenly installed. It is a composition. FIG. 4D shows a configuration in which one horizontal rib 72 is symmetrically installed on both sides of the vertical rib 71 in the middle portion of the vertical rib 71 from the side outer wall 40. FIG. 4E shows a T-shaped structure in which one horizontal rib 72 is symmetrically installed on both sides of the vertical rib 71 at the tip of the vertical rib 71. FIG. 4F shows a configuration in which two horizontal ribs 72 are symmetrically installed on both sides of the vertical ribs 71 at the tip and the middle portion of the vertical ribs 71. FIG. 4 (g) shows a configuration in which three horizontal ribs 72 are symmetrically installed on both sides of the vertical ribs 71 at the tip and the middle portion of the vertical ribs 71. In FIG. 4H, one horizontal rib 72 is symmetrically installed on both sides of the vertical rib 71 at the tip of the vertical rib 71, and one horizontal rib 72 is installed in the middle portion of the vertical rib 71. It is a configuration installed on one side of the vertical rib 71. In FIG. 4 (i), one horizontal rib 72 is symmetrically installed on both sides of the vertical rib 71 at the tip of the vertical rib 71, and two horizontal ribs 72 are provided in the middle portion of the vertical rib 71. It is configured to be installed on both sides of the vertical rib 71 at different positions. FIG. 4J shows a configuration in which one horizontal rib 72 is installed on one side of the vertical rib 71 at the tip of the vertical rib 71. FIG. 4K shows a configuration in which two horizontal ribs 72 are installed on one side of the vertical ribs 71 at the tip and the middle portion of the vertical ribs 71. 4 (a) to 4 (k) show a configuration in which the horizontal rib 72 is orthogonal to the vertical rib 71. FIG. 4 (l) shows a V-shaped configuration in which the vertical ribs 71 are asymmetrically installed at the tip of the vertical ribs 71 on both sides of the vertical ribs 71 at different angles. FIG. 4 (m) has a Y-shaped structure that is not orthogonal to the vertical rib 71. FIG. 4 (n) has a configuration that is not orthogonal to the vertical rib 71. FIG. 4 (o) shows a horizontal rib 72 extending in a shape different from that of the vertical rib 71, and the horizontal rib 72 has a hollow cross-sectional quadrangular structure. FIG. 4 (p) shows a horizontal rib 72 extending in a shape different from that of the vertical rib 71, and the horizontal rib 72 has a hollow cross-section circular structure. FIG. 4 (q) shows a horizontal rib 72 extending in a shape different from that of the vertical rib 71, and the horizontal rib 72 has a solid cross-sectional quadrangular structure. FIG. 4 (r) shows a horizontal rib 72 extending in a shape different from that of the vertical rib 71, and the horizontal rib 72 has a solid circular cross section. FIG. 4 (s) shows a configuration in which the angle between the horizontal rib at the tip of the vertical rib 71 and the horizontal rib at the intermediate portion is different.

Although not shown, the outer wall reinforcing rib 7 can be configured by selecting all or a part of the configuration from these forms and combining them. Further, the number and size of the outer wall reinforcing ribs 7 to be installed on the pallet 1 may be determined according to the size of the side end girder 4 and the wall thickness of the side outer wall 40.

Further, although not shown, the outer wall reinforcing rib 7 having the above-described configuration is opposed to the front outer wall 401 from the inner side surface 401 of the front outer wall 400 facing the opening of the fork insertion hole 6 of the side end girder 4 or the intermediate girder 5. It may be extended in 400 directions. That is, the outer wall reinforcing rib 7 may be installed at any position on the outer wall 3. With such a configuration, it is possible to prevent the front outer wall 400 from being deformed even when the claws of the lift come into contact with the front outer wall 400.

Further, as shown in FIGS. 2 and 3, in the side end girder 4, in addition to the outer wall reinforcing rib 7, the inner side surfaces of the upper deck board 21 and the lower deck board 22 face the fork insertion hole 6. Reinforcing ribs 8 are provided to reinforce the inner side wall 49 of the side end girder and to increase the strength of the upper deck board 21, the lower deck board 22 and the pallet 1. The reinforcing ribs 8 are installed in a grid pattern by reinforcing ribs parallel to the fork insertion direction and reinforcing ribs orthogonal to the fork insertion direction. In the vicinity of the entrance of the fork insertion hole 6, it is preferable to narrow the interval between the reinforcing ribs in order to further increase the strength. Further, the reinforcing ribs 8 include a connecting reinforcing rib 87 formed between the upper deck board 21 and the lower deck board 22, and a non-connecting reinforcing rib 86 having a height lower than that between the upper deck board 21 and the lower deck board 22. 89 is provided. The connecting reinforcing rib 87 and the non-connecting reinforcing rib 89 extending from the inner side surface 48 of the inner side wall 49 of the side end girder toward the outer side wall 40 may be connected and installed. The reinforcing rib 8 may not be provided.

The outer wall reinforcing rib 7 is connected to the connecting reinforcing rib 87 extending from the inner side wall 49 of the side end girder via the non-connecting reinforcing rib 89, and is connected to the non-connecting reinforcing rib 86 not connected to other ribs. It may be configured to be connected orthogonally to the reinforcing ribs parallel to the fork insertion direction, but may not be connected to other ribs, and in the pallet 1, one of these configurations may be used. Although only the above-mentioned configuration may be used, two or more kinds of configurations may be used in combination. The non-connecting reinforcing rib 86 may be connected to the vertical rib 71 and / and the horizontal rib 72 of the outer wall reinforcing rib 7, and may be configured at the same height, but may be straight or straight. It may be configured to have a curved slope.

Further, reinforcing ribs 8 are also provided inside the intermediate girder 5, and are installed in a grid pattern by reinforcing ribs parallel to the fork insertion direction and reinforcing ribs orthogonal to the fork insertion direction.

In the above embodiment, although it is provided only on the outer wall 3, in order to reinforce the pallet 1, the outer wall reinforcing rib 7 is provided on the inner side surface of the side end girder inner side wall 49 of the side end girder 4 and the intermediate girder 5. It may also be provided on the inner side surface 661 of the inner side wall 66 facing the fork insertion hole 6.

Further, in the fork insertion hole 6, reinforcing ribs 9 for increasing the strength of the upper deck board 21, the lower deck board 22, and the pallet 1 are provided on the inner side surfaces of the upper deck board 21 and the lower deck board 22. ing. The reinforcing ribs 9 are installed in a grid pattern by the reinforcing ribs 91 parallel to the fork insertion direction and the reinforcing ribs 92 orthogonal to the fork insertion direction. In the vicinity of the entrance of the fork insertion hole 6, it is preferable that the space between the reinforcing ribs 9 is narrowed in order to further increase the strength. Further, the reinforcing rib 9 is provided with a reinforcing rib 9 having a height lower than that between the upper deck board 21 and the lower deck board 22 in order to insert the forklift claw into the fork insertion hole 6. The reinforcing rib 9 may not be provided.

Further, although the two-way pallet has been described in the above embodiment, the pallet may be a four-way pallet, although not shown. In the case of a four-way insertion pallet, the outer wall reinforcing rib 7 is provided on the side outer wall of the portion facing the fork insertion hole in two directions.

The pallet 1 is not limited to this method, but the upper pallet member 11 and the lower pallet member 12 are molded by injection molding or the like, and the upper pallet member 11 and the upper pallet member 11 are in a state where the upper deck board 21 and the lower deck board 22 are directed outward. It can be manufactured by facing the lower pallet member 12, melting the facing portion, pressing and contacting the lower pallet member 12, welding and integrating. At this time, the side end girder 4 extends inward from the side end girder member 401 extending inward from the upper deck board 21 of the upper pallet member 11 and inward from the lower deck board 22 of the lower pallet member 12. The side end girder member 402 can be welded and integrally formed. Further, the outer wall reinforcing rib 7 is integrally formed by facing the outer wall reinforcing rib member 77 provided on each of the upper pallet member 11 and the lower pallet member 12, melting the facing portions, pressurizing and contacting them, and welding them together. It can be molded.

The synthetic resin pallet of the present invention as described above can be used by intentionally pushing the outer wall of the pallet, in other words, the outer wall of the girder of the pallet, with the claws of a forklift to align the pallet. Since it is possible to suppress deformation of the wall and improve impact resistance, it becomes easy to handle the pallet with a forklift, and it can be extremely useful in the distribution industry such as storage and transportation of luggage.

1 Synthetic resin pallet 11 Upper pallet member 12 Lower pallet member 21 Upper deck board 22 Lower deck board 3 Outer side wall 4 Side end girder 40 Side outer wall 41 Inner side surface of side outer wall 5 Intermediate girder 6 Fork insertion hole 7 Outer wall reinforcement rib 71 Vertical rib 72 Horizontal rib 8 Reinforcement rib 9 Reinforcement rib

Claims (8)

The upper deck board and the lower deck board are connected by a girder having a hollow structure, and a fork insertion hole is formed in a space surrounded by the girder, the upper deck board and the lower deck board, and the upper deck board and the lower part are formed. An outer wall reinforcing rib having the same height as the girder is provided on the inner surface of the outer wall of the girder installed between the deck boards, and the outer wall reinforcing rib is a vertical rib extending from the inner side surface of the outer wall. , A synthetic resin pallet characterized in that the vertical ribs are provided with horizontal ribs extending in a direction different from the direction in which the vertical ribs are extended. The upper deck board and the lower deck board are connected by a girder having a hollow structure, and a fork insertion hole is formed in a space surrounded by the girder, the upper deck board and the lower deck board, and the upper deck board and the lower part are formed. An outer wall reinforcing rib having the same height as the side end girder is provided on the inner surface of the side outer wall of the side end girder installed at the side end between the deck boards, and the outer wall reinforcing rib is provided on the outer side of the side. It is characterized in that it is configured to include a vertical rib extending from the inner side surface of the wall and a horizontal rib extending from the vertical rib in a direction different from the direction in which the vertical rib is extended. Synthetic resin pallet. The synthetic resin pallet according to claim 1 or 2, wherein the horizontal ribs are installed so as to extend from the tips of the vertical ribs. The synthetic resin pallet according to any one of claims 1 to 3, wherein the horizontal rib is installed so as to extend from an intermediate portion of the vertical rib. The synthetic resin pallet according to any one of claims 1 to 4, wherein the horizontal ribs are symmetrically installed on both sides of the vertical ribs. The synthetic resin pallet according to any one of claims 1 to 5, wherein the horizontal ribs are asymmetrically installed on both sides of the vertical ribs. The synthetic resin pallet according to any one of claims 1 to 6, wherein the horizontal rib has a shape different from that of the vertical rib and extends from the vertical rib. The method according to any one of claims 1 to 7, wherein the horizontal rib is installed at a position where the vertical rib first deforms when the outer wall of the side portion is pressed. Synthetic resin pallet.

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