JPH0755710B2 - Cardboard pallets - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to corrugated board pallets.

[0002]

2. Description of the Related Art Conventionally, cardboard pallets are lightweight and
It is load-bearing and widely used because it can be manufactured at low cost. Most of them have a cardboard flat plate on the top plate, and take a form that supports the top plate at least at both edges so that the top plate part is lifted up, and the pawls of a forklift are inserted to move the goods placed on the cardboard pallet. It is used to
Known examples include, for example, Japanese Utility Model Publication No. 62-36741, Japanese Utility Model Publication No. 3-38094, and Japanese Patent Application Laid-Open No. 4-2159.
No. 43 publication is available.

[0003]

When the top plate is supported by at least both edges, it is preferable that the load is evenly applied to both edges, but a small article packed in a bag at the center of the top. When the load is not fixed, the distributed load cannot be withstood, and the top plate bends, making it difficult to support the load.

In order to withstand such a distributed load, a plastic film or cloth is laminated on the upper surface of the corrugated board and a reinforcing plate is formed on the inner surface, as shown in Japanese Utility Model Publication No. 62-36741. Arranged and fixed with needle nails, a paper tube is loaded into the seat leg, or a box body is provided as in Japanese Utility Model Publication No. 3-38094, and a plurality of reinforcing plates are arranged on the inner surface of the deck board portion. There is also a structure in which a paper tube is internally fixed with a wire. However, all of them have a complicated structure and have a drawback that they need to be laid with needle nails or wires.

Further, in Japanese Patent Laid-Open No. 4-215943,
It is proposed that the horizontal beam member and the deck member are formed by bending and stacking corrugated cardboard parallel to the corrugation, and are fitted and assembled so that the horizontal beam and the deck part are formed. In this case, it is weak against torsional stress, and it is not possible to prevent bending even by fitting the beam and deck.
The bottom of the beam has a complicated structure such as a columnar side wall for reinforcement.

The object of the present invention is to solve the above-mentioned drawbacks of the conventional example, and to use a corner member formed by cutting or folding orthogonally to the corrugated corrugated board and a corner member made of a paper honeycomb core. Provides a strong corrugated pallet that is strong against loads from orthogonal planes, does not deform or buckle even with distributed loads, has a wide adhesive surface, can stably hold the top plate, and is easy to assemble. It is what

[0007]

In order to achieve the above object, the first invention is a corner member A, B in which a plurality of narrow corrugated boards are laminated by cutting or folding orthogonally to the corrugated shape of the corrugated board. And a plurality of the corner members A are arranged in parallel at intervals such that the claws of the forklift can be inserted,
A plurality of the above are assembled at the fitting portions 3 orthogonally from above the corner member A to provide a base, and L-shaped shapes are formed on both side walls of the corner member A with ruled lines orthogonal to the corrugated shape of the corrugated board. Arrange the flap a and bond it integrally with the bottom of the corner member B,
The L-shaped flaps b similar to those described above are provided on both side walls of the corner member B to provide a corrugated board pallet integrally bonded to the top plate by providing the upper end of the corner member B and the horizontal portion of the flap.

In the second invention, a paper honeycomb core is used as the corner members A and B. The third invention uses a flap that surrounds the bottom of the corner member and has both wings. A fourth aspect of the invention uses a flap in which a plurality of flaps that surround the bottom and that have both wings are folded into a continuous shape in conformity with the arrangement of the plurality of corner members A or B, and the fifth invention is orthogonal. A square paper tube is used for at least one of the square members A and B to be assembled by fitting.

[0009]

In the first aspect of the invention, since the corner members A and B are each formed by cutting or folding orthogonally to the corrugated shape of the corrugated cardboard and stacking a plurality of narrow corrugated cardboards, the rigidity in the vertical direction is strong. Further, since the corner members A and B are orthogonally fitted to each other and assembled to form a base, the rigidity against bending in any direction is sufficient. The corner members A are arranged with a space into which the pawls of the forklift can be inserted, and since there are a plurality of corner members B from above, the support of the top plate portion is also reliable on average over the entire surface. Further, L-shaped flaps a and b are provided on both side walls of each corner member A and B, the L-shaped flap a is adhered to the bottom surface of the corner member B, and the flap b of the corner member B is attached to the corner member B. The upper end and the horizontal part are formed to securely adhere the top plate to form an average pressure receiving surface.

In the second invention, by using the paper honeycomb cores for the corner members A and B, it becomes unnecessary to stack narrow corrugated cardboard like corrugated corrugated corrugated board. In the third aspect of the invention, by using the flaps that surround the bottoms of the corner members A and B and have both wings, there is a reinforcing action of the corner members and the assembling work is facilitated. In the fourth invention, the flap can be formed by bending a single corrugated board, and the reinforcing action is continuously strengthened.

According to the fifth aspect of the invention, since the square paper tube is used for at least one of the square members A and B, the assembling work is facilitated and the strength is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below based on the embodiments shown in the drawings. Reference numerals 1 and 2 denote corner members A and B, each of which has a shape in which a plurality of narrow corrugated boards are laminated by cutting or folding orthogonally to the corrugated shape of the corrugated board. As shown in FIG. 2, the waveform has a shape that appears on the bottom surface or the top surface, and therefore has a high rigidity in the vertical direction. The bending in the horizontal direction is reinforced by fitting and assembling the corner members A and B.
It should be noted that as the corrugated board, one having a front board attached on both sides or one side can be used. 3 shows a fitting part. In the illustrated example, the corner member A is provided with the notch, but the present invention is not limited to this, and the notch may be provided in either one or both.

Reference numerals 4 and 5 are L-shaped flaps a and b, which are provided on both side walls of the corner members 1 and 2 (A and B) and are bent at ruled lines 6 which are orthogonal to the corrugated shape of the corrugated board. The L-shaped flap a integrally bonds the side wall of the corner member A and the bottom of the corner member B. The L-shaped flap b integrally bonds the side wall of the corner member B and the top plate portion 7. As described above, since the corner members A and B are assembled by fitting orthogonally to each other, the horizontal direction,
Since the L-shaped flaps a and b are capable of integrally adhering the corner members A and B and the corner member B and the top plate portion 7 respectively, they have rigidity in any of the vertical directions. It was large and could be securely fixed, and an average pressure receiving surface could be provided over the entire surface of the top plate portion 7.

The claws of the forklift can be inserted into the gaps between the corner members A and placed on the top plate 7 for stable transfer, and the whole can be constructed of corrugated cardboard and easily constructed by bonding. It became so. FIG. 5 shows another embodiment of the L-shaped flap, which is a series of flaps 8 which are bent and formed in conformity with a plurality of corner members.

FIG. 6 shows another embodiment, in which 8 is a corner member A, 9 is a corner member B, and 10 and 11 are flaps a and b. FIG. 7 is a side view of the same. FIG. 8 is a side view showing still another embodiment, in which 12 and 13 are corner members A and b, 14 and 15 are flaps a and b.
Indicates.

FIG. 9 is a perspective view of the paper honeycomb core 16. In this case, the corrugated cardboard can be used as it is as a corner member without cutting or bending and stacking.

[0017]

In the present invention, since the corner member is formed by cutting or folding orthogonally to the corrugated shape of the corrugated cardboard and laminating a plurality of narrow corrugated cardboards, the rigidity in the vertical direction is strong.
Rigidity in the horizontal direction is reinforced by fitting and assembling the corner members A and B, and further, both side walls of the corner member A and the bottom of the corner member B, and both side walls of the corner member B and the surface of the top plate are respectively adhered. Since they are integrally fixed, the rigidity as a whole is strong, and in particular, a uniform pressure receiving surface can be provided on the entire surface of the top plate, which is a stable pallet. The same effect can be obtained when a paper honeycomb core is used.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a pallet of the present invention.

FIG. 2 is an enlarged perspective view of a part of a corner member seen obliquely from below.

FIG. 3 is an enlarged side view showing a bonded state of an L-shaped flap and a corner member.

FIG. 4 is an enlarged side view of another embodiment showing the same bonded state.

FIG. 5 is an enlarged side view of yet another embodiment showing the same bonded state.

FIG. 6 is a perspective view of an essential part showing another embodiment.

FIG. 7 is a side view of the same.

FIG. 8 is a side view showing still another embodiment.

FIG. 9 is an enlarged perspective view of a paper honeycomb core.

[Explanation of symbols]

 1, 2, 8, 9, 12, 13 Square member A, B 3 Fitting part 4, 5, 10, 11, 14, 15 L-shaped flap 6 Ruled line 7 Top plate part

Claims (5)

[Claims] 1. A corner member A, B having a shape in which a plurality of narrow width corrugated cardboards are laminated by cutting or folding orthogonally to the corrugated shape of the corrugated cardboard, and a plurality of the corner members A are inserted into a forklift claw. Square members B arranged in parallel with possible spacing
A plurality of the above are assembled at the fitting portions 3 orthogonally from above the corner member A to provide a base, and L-shaped shapes are formed on both side walls of the corner member A with ruled lines orthogonal to the corrugated shape of the corrugated board. Arrange the flap a and bond it integrally with the bottom of the corner member B,
A corrugated pallet made of corrugated board characterized in that the same L-shaped flap b as that described above is arranged on both side walls of the corner member B, and the upper end of the corner member B and a horizontal portion by the flap are provided and integrally bonded to the top plate portion. . 2. The corrugated board pallet according to claim 1, wherein a paper honeycomb core is used as the corner members A and B. 3. The corrugated board according to claim 1, wherein instead of the L-shaped flaps a and b that are adhered to the corner members A and B, flaps that surround the bottoms of the corner members A and B and have both wings are used. Made pallet. 4. The flap according to claim 1, wherein a plurality of flaps surrounding the bottom and having both wings are folded in a continuous form so as to match the arrangement of the plurality of corner members A or B. Cardboard pallets. 5. The corrugated board pallet according to claim 1 or 2, wherein a square paper tube is used for at least one of the corner members A and B which are assembled by fitting at right angles.