JPH08207932A - Plastic pallet - Google Patents

Abstract

PURPOSE: To prevent a load from accidentally dropping to safely stack pallets by forming a pallet wherein an end rim of a lower deck board of a protruding frame standing on an upper end rim of an upper deck board dented inward from an inner face of the protruding frame on a vertical face. CONSTITUTION: A protruding frame 29 for preventing a load from dropping is provided perpendicularly only on an upper part of a fork insertion port 25 on an upper end rim of an upper deck board 20, while cuts 30, 31 are formed on an upper part of a pillar 11. An outer face of the frame 29 is on a plane with an outer face of the upper deck board 20, and formed on a plane with an outer face of each pillar 11. On the other hand, an end rim of a lower deck board 25 of the fork insertion port 25 is formed to be dented inward from the end rim of the upper deck board 20 on a vertical face. Therefore, when pallets are stacked, parts where the pillars 11 protrude are fitted into the cuts 30, 31 of a lower pallet, and the end rim of the lower deck board 23 is fitted inside the protruding frame 29 to be stable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic pallet for storing and carrying luggage by a forklift,
More specifically, the present invention relates to a plastic pallet having a convex frame body for projecting a luggage on the periphery of the upper surface.

[0002]

2. Description of the Related Art Conventionally, plastic pallets having excellent corrosion resistance and stain resistance have been used in place of wooden and metal pallets for storing and carrying loads by a forklift. By the way, a plastic pallet has a drawback that it has a small friction coefficient and is slippery due to its inherent properties. Pallets must be able to store and transport luggage in a safe, reliable and stable condition. In addition, even if pallets are stacked on top of each other, they must not slip inadvertently. Thus, slippage problems occur between pallets, between pallets and loads.

As a method for preventing such slippage, there is a method in which a rubber grommet is attached to an appropriate place of the pallet and a method in which a convex frame is provided on the upper surface of the upper deck board. One of them is a synthetic resin pallet described in Japanese Utility Model Publication No. 5-44281. This means that "a projecting portion for enlarging the area of the upper surface is integrally formed on the upper outer peripheral edge of the upper deck, a frame is erected on the upper end edge of the projecting portion, and further, a circumferential direction is provided at each corner of the frame. It is characterized in that a notch is formed along the edge. " That is, the upper deck board is formed larger than the lower deck board, and the lower deck board of a different pallet can be placed in the frame body standing on the outer periphery of the upper portion.

Another method is as follows.
There is a pallet described in Japanese Patent No. 335. This is characterized in that "a discontinuous projection is provided on the periphery of the cargo loading surface, and a projection fitting hole into which the projection is fitted when empty pallets are stacked is provided on the back surface". . That is, when stacked, empty projections are stacked by fitting the protrusions provided on the upper surface of the lower pallet into the holes provided on the lower surface of the upper pallet.

[0005]

The pallet of the above-mentioned first known example has the following problems although it is possible to stabilize and support loads and to stack the pallets. That is, since the area of the upper deck is "enlarged", the area becomes larger than the standard size of the conventionally used pallet. Also, "area of upper deck"
When the standard dimension is, the "area of the lower deck" must be reduced by the amount that the frame is erected. When the area of the lower deck is small, there is a problem that stable stacking of plastic bottle boxes such as beer and soft drinks cannot be carried out when they are stored and transported. As shown in FIG. 11, when the bottle case 3 is placed on the pallet 1 and the pallet 1 having the bottle box further placed on the bottle case 3 is stacked, the size of the lower deck is small and the inside is It is placed inside the corner 4 of the lower bottle box 3 and not on the corner 4. Therefore, there is a problem that the pallets themselves are deformed as the boxes are deformed, and the pallets cannot be stacked in a stable state.

Further, although the pallet of the second known example can prevent the luggage from slipping down and stack the pallets high, the protrusions on the upper surface are spaced from the side surface by a predetermined distance as much as the protrusion fitting holes are provided. Therefore, the effective area for loading luggage is reduced. Further, as shown in Japanese Utility Model Publication No. 53-25335, when the protrusion is provided on the upper surface of the support column, the protrusion fitting hole on the back surface is naturally provided on the lower surface of the support column. When the projection fitting holes are provided on the lower surface of the column, as shown in FIG. 12, the bottle box 3 is placed on the pallet 5 and the pallet 5 on which the bottle box is placed is stacked to form the pallet. The corners of the lower bottle box cannot be mounted in close contact with the upper surface of the corner of the bottle box due to the projection fitting holes. For this reason, there is a problem in that the portion of the column that is important for supporting the load is not placed on the luggage.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a plastic pallet which is capable of stacking pallets in a safe manner while preventing inadvertent dropping of luggage.

[0008]

The present invention has the following configuration to achieve the above object. That is, the plastic pallet according to claim 1 is a plastic pallet in which an upper deck board and a lower deck board are connected to each other through columns and the adjacent columns are used as fork insertion ports. A convex frame body is erected on the upper edge of, and notches are formed along both sides at the four corners, and the edge of the lower deck board below the convex frame body is a vertical plane in the convex frame. It is characterized in that it is formed by denting inward from the inner surface of the body. Further, the plastic pallet according to claim 2 is a four-way insertion pallet, wherein the convex frame body is erected only on the upper part of the fork insertion port, and the notch is formed on the upper part of the support column. It is characterized in that an edge of the lower deck board at the slot is formed so as to be recessed inward from an inner surface of the convex frame body on a vertical surface. Further, the plastic pallet 1 according to claim 3
Is a two-sided pallet, in which a convex frame is erected on the upper edge of the upper deck board, and notches are formed along both sides at the four corners. Then, the edge of the lower deck board is formed by denting the edge of the lower deck board inward from the inner surface of the convex frame body, and the convex frame body erected on the upper deck board at the lower end of the outer surface of the columns on both sides. It is characterized in that a notch portion into which is fitted can be formed.

[0009]

According to the first aspect of the present invention, the convex frame member provided upright on the upper edge of the upper deck board prevents the loaded load from falling by being locked. Since the notches are formed along both sides at the four corners, not only can the outer surface of the support post be a continuous vertical surface when the pallets are stacked, but also in a stable state on the lower pallet load. Can be placed. Further, according to the second aspect, the columns at the four corners and the intermediate portion thereof are fitted into the notches between the convex frame bodies when the pallets are stacked, so that the upper and lower pallets can be reliably positioned. . Claim 3
In this case, since the convex frame body of the lower pallet fits into the notch of the upper pallet, the upper and lower pallets can be reliably positioned and stable stacking can be achieved even in the two-way pallet.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 are four-way pallets showing a first embodiment, FIG. 1 is a top perspective view, FIG. 2 is a front view, FIG. 3 is a bottom view, and FIG. 4 is a partial sectional view of a fork insertion port. . The pallet 10 is formed by, for example, injection molding, and a horizontal dividing line 1 is formed at a substantially central portion in a height direction of the column 11.
The upper part 15 and the lower part 17 are separately molded from No. 3 and the upper part 15 and the lower part 17 that have been separately molded are manufactured into an integral pallet by abutting their divided surfaces and welding them. The upper component 15 has vertical and horizontal reinforcing ribs 19 on the lower surface and an upper deck board 20 having a flat upper surface, and the lower component 17 has a lower deck board 23 having vertical and horizontal reinforcing ribs 21 on the upper surface and a flat lower surface. It is equipped with 9 stanchions 1 at the four corners, in the middle of each side, and at the center on the diagonal.
1 is provided. And the pillars 11 adjacent to each other
A pair of fork insertion openings 25 for inserting the forks of the forklift are formed in each direction.

Although each of the columns 11 has a substantially circular cross section, the inner peripheral surface of each column 11 facing the fork insertion port 25 of the column 11 is tapered in cross section for facilitating fork insertion. I am in a shape. Further, as shown in FIG. 3, four square through holes 27 are formed inside the lower deck board 23 surrounded by the columns 11. And the upper deck board 2 facing the fork slot 25
0 and the end surfaces of the lower deck board 23 are tapered surfaces to facilitate insertion of a fork. Although not shown, the upper deck board 20 and the lower deck board 23 may be provided with through holes for draining water inside the reinforcing ribs 19 and 21, and are provided at appropriate positions. A rubber grommet for slip prevention can be fitted.

At the upper edge of the upper deck board 20,
The convex frame body 29 is erected vertically. This convex frame 2
9 is provided only above the fork insertion port 25,
Notches 30 and 31 are formed in the upper portion of the column 11. That is, in the range in which the columns 11 of the upper pallet are placed when the pallets are stacked, the convex frame bodies 29 in the lower pallet are erected at intervals with cutouts, so that the four corners and each side are erected. Notch 3 in the middle
An upper surface of the upper deck board 20 is opened to the side by 0 and 31. Although the convex frame body 29 is formed to have the same height as a whole, the convex frame body 29 may be partially provided with a protrusion at the upper end thereof or may be formed in a corrugated shape. In the illustrated embodiment, the outer surface of the convex frame 29 is formed on the same surface as the outer surface of the upper deck board, and thus is formed on the same surface as the outer surface of each of the columns 11.

On the other hand, the edge of the lower deck board 23 at the fork insertion port 25 is formed to be recessed inward by a dimension L in the vertical plane than the edge of the upper deck board 20. In other words, as is apparent from FIGS. 3 and 4, the outer surface of the pillar 11 in the middle of the four corners and each side projects from the side surface 24 of the lower deck board 23. The dent size L of the edge of the lower deck board 23 is at least larger than the wall thickness of the convex frame body 29. Therefore, when the pallets are stacked, the protruding portions of the support columns 11 are fitted into the cutout portions 30 and 31 of the lower pallet, and the edges of the lower deck board 23 are fitted into the convex frame body 29. Become.

The four-way pallet 10 having the above structure is
The luggage placed on the upper deck board 20 has a convex frame 29.
Since it is locked by, it is possible to prevent an inadvertent drop and to hold it in a stable state. In particular, as shown in FIG. 5, when the bottle box 3 used for storage and transportation of beer, soft drinks, etc. is placed, the convex frame body 29 prevents slippage and further When the pallets 10 on which bottles are placed are stacked, the pillars 11 that are most important for supporting the load are placed on the handles 4 of the lower bottle box 3 and stable support is obtained. In particular, it is important for the pillars 11 at the four corners of the pallet to be placed on the handle 4 in order to stack them in a stable state.

Further, when the pallets are stacked, as shown in FIGS. 6 and 7, the lower deck board of the upper pallet is fitted into the convex frame 29 of the lower pallet,
Since the pillars 11 of the upper pallet are fitted in the notches 30 and 31 between the convex frame bodies of the lower pallet, the both are surely positioned, and skidding is prevented to enable stable stacking.

Next, an embodiment of the two-way pallet will be described with reference to FIGS. 8 is a top perspective view, FIG. 9 is a bottom view, and FIG. 10 is a partial sectional view. The two-way pallet 33 includes columns 35 on both sides and columns 3 in the middle.
This is the same as the four-way pallet of the first embodiment except that 7 and 7 are provided in parallel in the same direction. Therefore, the fork insertion port 25 is the same, and the common components are denoted by the same reference numerals and the description thereof is omitted. Also in this two-way pallet 33, a convex frame body 29 is vertically provided on the upper edge of the upper deck board 20. This convex frame 29 is similar to the four-way pallet 10 of the first embodiment, and has notches 30 and 31 formed in the four corners and in the middle of each side.

On the other hand, on the fork insertion port 25 side of the lower deck board 23, the edge of the lower deck board 23 is formed by denting the dimension L inward in the vertical plane than the edge of the upper deck board 20. ing. This structure is the same as the structure on the fork insertion port 25 side of the four-way pallet 10. A notch 39 is formed at the lower end of the outer surface of each of the columns 35 on both sides. The cutout portion 39 has a size such that the outer end portion of the support column 35 at a position below the convex frame body 29 erected on the upper deck board is cut out, and when the pallets are stacked, the convex frame body of the lower pallet can be fitted. Is formed in. In the embodiment, two notches 39 are formed by intermittently notching the protrusions according to the convex frame body, but may be continuous notches.

The two-way pallet 33 having the above structure is
The luggage placed on the upper deck board 20 has a convex frame 29.
Since it is locked by, it is possible to prevent an inadvertent drop and to hold it in a stable state. The side surfaces of the four corners are the same vertical surface and the lower surface is a horizontal surface, so that even when the four corners are placed on the bottle box, they can be reliably placed on the handle of the bottle box. When the pallets are stacked, the lower deck board of the upper pallet is fitted into the convex frame body 29 of the lower pallet on the fork insertion port 25 side, and the notch 39 of the upper pallet is formed on the outer surface of the column 35. Since the convex frame body 29 of the lower pallet is fitted in, the both are surely positioned, and skid is prevented to enable stable stacking.

The structure, size, shape and the like of the pallet in which the present invention can be applied are not particularly limited. Therefore, in the embodiment, the pillars and the deck boards are both closed and smooth surfaces, but the pillars, the upper deck boards, and the lower deck boards may have known structures.

[0020]

As is apparent from the above, according to the present invention, the following specific effects can be achieved. That is, in the plastic pallet according to claim 1, a continuous convex frame body can be erected except for the four corners, and the upper deck board and the outer surface of the column can be flush with each other. Can be the same as the standard size of a conventional pallet. In addition, the convex frame body can obtain stable support for the loaded luggage, and the height dimension can be arbitrarily determined. Further, by providing the cutouts at the four corners, the lower surfaces of the four corners can be formed as horizontal surfaces, so that the lower pallet can be stably placed on the load.

In the plastic pallet according to the second aspect, the convex frame is erected only on the upper part of the fork insertion port, and the notch is formed on the upper part of the column, and the lower deck board of the fork insertion port is formed. Since the end edge is formed by denting inward from the inner surface of the convex frame body on the vertical surface, the outer surface of the column can be a vertical surface, and positioning is easy when the pallets are stacked. Further, in the plastic pallet according to claim 3, notches are formed along the both sides of the convex frame body at the four corners, and the convex frame body is provided upright on the upper deck board at the lower end portions of the outer side surfaces of the columns on both sides. Since the notch portion into which the pallet can be inserted is formed, the pallets can be surely stacked even with the two-way pallet.

[Brief description of drawings]

FIG. 1 is a top perspective view showing an embodiment of a four-way pallet.

FIG. 2 is a front view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is a partial sectional view of a fork insertion port.

FIG. 5 is a partial cross-sectional view showing a stacked state with a bottle box.

FIG. 6 is a top perspective view showing a stacked state of pallets.

FIG. 7 is a partial cross-sectional view showing a stacked state of pallets.

FIG. 8 is a top perspective view showing an example of a two-way pallet.

FIG. 9 is a bottom view of the same.

FIG. 10 is a partial sectional view of a fork insertion port.

FIG. 11 is a partial cross-sectional view showing a stacked state of a conventional pallet and a bottle box.

FIG. 12 is a sectional view showing a stacking state of a conventional pallet and a bottle box.

[Explanation of symbols]

 10 Four-way pallet 11 Strut 20 Upper deck board 23 Lower deck board 25 Fork slot 29 Convex frame 30 Notch 31 Notch 33 Two-way pallet 35 Strut 37 Strut 39 Notch

Claims (3)

[Claims] 1. A plastic pallet in which an upper deck board and a lower deck board are connected to each other through columns and a fork insertion port is formed between adjacent columns, and a convex frame is provided on an upper edge of the upper deck board. While standing the body,
Notches are formed along both sides at the four corners, and the edges of the lower deck board below the convex frame body are formed by denting inward from the inner surface of the convex frame body in a vertical plane. A plastic pallet featuring. 2. A four-way insertion pallet, wherein the convex frame body is erected only on the upper part of the fork insertion port, and a notch is formed on the upper part of the pillar, and the lower deck board of the fork insertion port is formed. 2. The plastic pallet according to claim 1, wherein the end edge is formed by denting inward from the inner surface of the convex frame body on a vertical surface. 3. A two-way insertion pallet, in which a convex frame is erected on the upper edge of the upper deck board, and notches are formed along the both sides at the four corners of the upper deck board. On the insert side, the edge of the lower deck board is formed by denting the edge of the lower deck board inward from the inner surface of the convex frame body, and the protrusions set up on the upper deck board at the lower end of the outer surface of the columns on both sides. The plastic pallet according to claim 1, wherein a notch portion into which the frame member can be fitted is formed.