JP2006199328A - Corrugated fiberboard pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated fiberboard pallet which can be strongly connected with a packing case without increasing a manufacturing cost. <P>SOLUTION: The corrugated fiberboard pallet 3 has an upper pallet board 7 and a flap 10 provided on the peripheral edge of an upper part 7a of the upper pallet board 7. A communicating hole 14 for fitting a joint 4 connecting the flap 10 with the side board 5 of the packing case 2 is formed in the flap 10. A part on the opposite side to the flap 10 against a folding line L among the upper part 7a of the upper pallet board 7 is made to be a rising piece 11. A communicating hole 15 is formed in a region facing the communicating hole 14 in the rising piece 11. The rising piece 11 is piled up on the flap 10 like this, and the surrounding of the communicating hole 14 becomes double (triple by including the side board 5) to be reinforced thereby. As the part of the upper pallet board 7 is used for reinforcement, the number of components is not increased and the manufacturing cost is not increased. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a corrugated cardboard pallet used for transporting and storing products.

Usually, a cardboard pallet is attached to a cardboard box for packing a heavy product such as a copying machine (see, for example, Patent Document 1). On the pallet, a packaging case for storing the product is placed to constitute a cardboard box. The pallet and the packing case are connected using a joint member.
Specifically, communication holes are formed in each of the pallet and the packing case, and joints are inserted into these communication holes to connect the pallet and the packing case.
JP 2000-219240 A

  The cardboard box in which the product is put is moved by, for example, a forklift. During the movement, a fork of a forklift is inserted into the pallet of the cardboard box, and the fork lifts the cardboard box while receiving the pallet. For this reason, a packing case may shift | deviate with respect to a pallet, and there exists a possibility that the circumference | surroundings of the communication hole of a pallet and the circumference | surroundings of the connection hole of a packaging case may be torn.

Therefore, it is conceivable to add a reinforcing member to the connecting portion between the pallet and the packing case to connect the pallet and the packing case more firmly. However, adding a reinforcing member causes an increase in the number of parts and an increase in manufacturing cost.
The present invention has been made under such a background, and an object thereof is to provide a corrugated cardboard pallet that can be firmly connected to a packaging case without causing an increase in manufacturing cost.

  The invention according to claim 1 for achieving the above object includes a corrugated cardboard pallet plate (7) having a rectangular plan view, and a plurality of corrugated cardboard legs (9) provided on the lower surface of the pallet plate. A cardboard flap (10) formed integrally with the pallet plate at the periphery of the pallet plate, folded upward along the folding line (L), and overlapped with the lower part of the packaging case (2) The flap is formed with a communication hole (14) for fitting the joint (4) when the lower part of the packaging case is overlapped, and the folding A cut-and-raised piece (11) having a communication hole (15) is provided in a part of the pallet plate opposite to the line and facing the communication hole formed in the flap. It is a cardboard pallet according to claim.

In addition, the alphanumeric characters in parentheses represent corresponding components in the embodiments described later. The same applies hereinafter.
According to this configuration, by folding the flap and cutting and raising the cut piece, the cut and raised piece overlaps with the flap, and the periphery of the communication hole is doubled and reinforced. As a result, the flap is formed using the joint. (Cardboard pallet) and the packaging case can be firmly connected. And since it is the simple structure of using a part of pallet board as a cut-and-raised piece, the number of parts does not increase and it does not cause an increase in manufacturing cost.

Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is an illustrative perspective view showing a schematic configuration of a packaging unit including a cardboard pallet according to an embodiment of the present invention. Referring to FIG. 1, a packing unit 1 is used for packing products such as copying machines and printers.
The packaging unit 1 has a rectangular parallelepiped outer shape, and includes a cardboard packaging case 2, a cardboard pallet 3, and a plurality of joints 4 for connecting the packaging case 2 and the cardboard pallet 3.

  The packaging case 2 is integrally formed as a whole, and includes four side plates 5 and an upper plate 6 disposed above the side plates 5. Each side plate 5 is formed in a rectangular plate shape, and adjacent side plates 5 are connected so as to be orthogonal to each other. Thereby, the packaging case 2 has a rectangular (for example, substantially square) outer shape in plan view. The upper plate 6 covers the upper openings of the four side plates 5. The upper plate 6 can be opened to open the opening.

FIG. 2 is a perspective view of the cardboard pallet 3 in a single item state. Referring to FIGS. 1 and 2, a corrugated cardboard pallet 3 (hereinafter simply referred to as “pallet”) is formed entirely using corrugated cardboard, and is disposed below the packaging case 2.
The pallet 3 includes an upper pallet plate 7 (pallet plate) and a lower pallet plate 8 that extend substantially horizontally and face each other, a plurality of legs 9 that connect the upper and lower pallet plates 7 and 8, and a plurality of flaps 10. Yes.

  The upper pallet plate 7 is formed integrally by laminating a plurality of plate-like members (three in this embodiment), and has an upper portion 7a, an intermediate portion 7b, and a lower portion 7c. The upper pallet plate 7 is rectangular (for example, substantially square) in plan view. In plan view, the shape of the four sides (periphery) of the upper part 7 a of the upper pallet plate 7 is slightly larger than the shape of the four sides (periphery) of the packing case 2. By covering the upper surface of the upper part 7a of the upper pallet plate 7 with the packing case 2, an accommodation space S for accommodating products, which is partitioned by the upper pallet plate 7, the four side plates 5 and the upper plate 6, is formed. . The upper pallet plate 7 may be formed by only one plate-like member (upper part 7a).

  A plurality of (for example, nine) legs 9 are provided, and are equidistantly arranged in a matrix (3 rows × 3 columns) between the lower surface of the lower portion 7 c of the upper pallet plate 7 and the upper surface of the lower pallet plate 8. Has been placed. (In FIGS. 1 and 2, only some of the legs 9 are shown). Specifically, legs 9 are arranged below the four corners of the upper pallet plate 7. Legs 9 are also arranged below the central portions of the four sides of the upper pallet plate 7. Furthermore, legs 9 are also arranged below the center of the upper pallet plate 7.

Each leg 9 is a member formed by stacking a plurality of cardboards into a rectangular parallelepiped shape. The upper surface of each leg 9 is adhered to the lower surface of the lower portion 7 c of the upper pallet plate 7, and the lower surface of each leg 9 is adhered to the upper surface of the lower pallet plate 8.
With the above configuration, a pallet 3 (packing unit 1) can be lifted by inserting a fork (not shown) of a forklift or the like into a gap between adjacent legs 9.

The flap 10 is formed integrally with the upper portion 7a of the upper pallet plate 7 and extends from each of the four sides of the upper portion 7a of the upper pallet plate 7. Each flap 10 is formed in a rectangular plate shape.
Each of the four sides of the upper part 7a of the upper pallet plate 7 forms a folding line L of the corresponding flap 10. Each flap 10 is folded upward along the corresponding folding line L and overlapped with the lower part of the corresponding side plate 5 of the packaging case 2.

One of the features of this embodiment is that the cut and raised pieces 11 are formed by using a part of the upper portion 7a of the upper pallet plate 7, and the corresponding (adjacent) flap 10, cut and raised pieces 11 and packing case 2 are formed. The side plates 5 are overlapped and fastened by a single joint 4, thereby achieving a strong connection between the corresponding flap 10 and the side plate 5.
One or a plurality of cut and raised pieces 11 (four in this embodiment) are provided, and are arranged, for example, at the center of each folding line L. Each cut-and-raised piece 11 is located on the opposite side to the corresponding (adjacent) flap 10 with respect to the corresponding folding line L, and is U-shaped in plan view on a part of the upper part 7a of the upper pallet plate 7. It is formed with a notch 12 forming the following.

  In plan view, one end and the other end of each cut 12 are located on the same folding line L. Thereby, each cut-and-raised piece 11 is as shown in FIG. 3 with respect to the main portion 13 of the upper portion 7a of the upper pallet plate 7 (the portion of the upper portion 7a of the upper pallet plate 7 other than the cut-and-raised piece 11). , And is bent upward along the corresponding folding line L. Each cut-and-raised piece 11 bent upward can overlap with the corresponding flap 10. Legs 9 are arranged below the cut and raised pieces 11.

  4 is a longitudinal sectional view taken along line AA in FIG. Referring to FIGS. 3 and 4, communication holes 14, 15, 16 for inserting (joining) joint 4 are formed in flap 10, cut-and-raised piece 11, and side plate 5. When the corresponding flap 10, the cut and raised piece 11 and the side plate 5 are overlapped, the respective communication holes 14, 15 and 16 are opposed (communication) (in FIG. 4, one set of flaps 10, the cut and raised portions). Only the piece 11 and the side plate 5 are shown).

Specifically, a communication hole 14 is formed at the center of each flap 10. A communication hole 15 is formed in the central portion of each cut and raised piece 11, that is, in a region facing the communication hole 14 of the adjacent flap 10. A communication hole 16 facing the communication hole 15 of the adjacent cut-and-raised piece 11 is formed in the lower part of the center in the width direction of each side plate 5.
For example, four joints 4 are provided corresponding to the number of the flaps 10. Each joint 4 is a known one. Specifically, each joint 4 is integrally formed using synthetic resin, and includes a cylindrical portion 17, a flange portion 18 provided at one end of the cylindrical portion 17, and the cylindrical portion 17. The first and second movable pieces 19 and 20 are provided at the other end portion of the first and second movable pieces 19 and 20 and are rotatable with respect to the cylindrical portion 17.

The outer peripheral surface of the cylindrical portion 17 has a shape along the inner peripheral surface of each communication hole 14, 15, 16. The flange portion 18 is formed in a plate shape and extends outward in the radial direction of the tubular portion 17. Each of the first and second movable pieces 19 and 20 can rotate with respect to the cylindrical portion 17 with a connecting portion with the cylindrical portion 17 as a fulcrum.
By rotating the first and second movable pieces 19 and 20 so as to be perpendicular to the cylindrical portion 17 respectively, the first and second movable pieces 19 and 20 are brought into contact with each other. The position of can be held. Accordingly, a part of the first and second movable pieces 19 and 20 is protruded radially outward of the cylindrical portion 17 to form the flange portion 21. The flange portion 18 and the flange portion 21 are opposed to each other.

Further, by rotating the first and second movable pieces 19 and 20 so as to be parallel to the cylindrical portion 17 (see FIG. 5), these movable pieces 19 and 20 have a diameter of the cylindrical portion 17. The cylindrical portion 17 can be inserted into and removed from the communication holes 14, 15, 16 by moving inward in the direction.
With reference to FIG. 4, the cylindrical portion 17 is inserted through the flap 10, the cut and raised piece 11, and the communication holes 14, 15, 16 of the side plate 5 that are overlapped with each other. The flange portion 18 extends along the periphery of the communication hole 14 of the flap 10.

The flange portion 21 extends along the periphery of the communication hole 16 of the side plate 5. Thereby, the flap 10, the cut-and-raised piece 11 and the side plate 5 which are overlapped with each other are sandwiched and connected to each other by the pair of flange portions 18 and 21 in a state of being overlapped.
The packaging unit 1 is assembled as follows. That is, first, as shown in FIG. 3, a single pallet 3 is prepared, and each cut-and-raised piece 11 of the upper part 7 a of the upper pallet plate 7 is bent above the main body 13. Then, as shown in FIG. 5, the side plates 5 of the packing case 2 are placed on the upper surface of the upper portion 7 a of the upper pallet plate 7, and the corresponding flaps 10, the cut and raised pieces 11, and the side plates 5 are overlapped in order from the outside.

  Next, the tubular portion 17 of the corresponding joint 4 is inserted into the overlapped flap 10, the cut-and-raised piece 11, and the communication holes 14, 15, 16 of the side plate 5, and the flange portion 18 extends along the flap 10. Then, as shown in FIG. 4, the first and second movable pieces 19, 20 are rotated and abutted with each other to form a flange portion 21, and the flange portion 21 is made to run along the side plate 5. Thereby, as above-mentioned, the corresponding flap 10, the cut-and-raised piece 11, and the side plate 5 are clamped by a pair of flange parts 18 and 21, and are mutually connected.

  As described above, according to this embodiment, each flap 10 is bent and each cut-and-raised piece 11 is cut, so that each cut-and-raised piece 11 overlaps the corresponding flap 10 and the communication hole of the flap 10 The periphery of 14 is doubled (including the side plate 5 and tripled) and reinforced. As a result, each flap 10 and the corresponding side plate 5 of the packing case 2 are connected to each other using the joint 4 (the pallet 3 and the packing case). 2) can be firmly connected.

Thereby, it can prevent that the communicating hole 14 of each flap 10 and the communicating hole 16 of the corresponding side plate 5 shift | deviate relatively, and it can prevent favorably that each flap 10 and each side plate 5 are torn. Further, the durability of the packaging unit 1 against vibration and impact can be further improved.
Moreover, since it has a simple configuration in which a cut 12 is made in a part of the upper part 7a of the upper pallet plate 7 and a part of the upper pallet plate 7 is used as the cut piece 11, the number of parts does not increase and the manufacturing cost is increased. Will not cause a rise.

The present invention is not limited to the contents of the above embodiments, and various modifications can be made within the scope of the claims.
For example, the upper pallet plate 7 is formed in a rectangular shape in plan view, and two or more joints 4 are attached to each of two flaps 10 extending from two sides formed on the long side of the upper portion 7a of the upper pallet plate 7. Also good. Also in this case, the cut and raised pieces 11 are provided corresponding to the joints 4.

Moreover, the number of the cut-and-raised pieces 11 may be smaller or larger than the above-illustrated values. Furthermore, the cut and raised pieces 11 may be passed through only some of the joints 4.
Further, the shape of the cut 12 in a plan view may be a shape other than a U shape such as a U shape.

1 is an illustrative perspective view showing a schematic configuration of a packaging unit including a cardboard pallet according to an embodiment of the present invention. It is a perspective view in the state of the single item of a cardboard pallet. It is a perspective view in the state of the single item of a corrugated cardboard pallet, and has shown the state where cut and raised pieces were cut and raised. It is a longitudinal cross-sectional view which follows the AA line of FIG. It is a longitudinal cross-sectional view of the principal part for demonstrating the assembly | attachment of a packing unit.

Explanation of symbols

2 Packing case 3 Pallet (cardboard pallet)
4 Joint 7 Upper pallet plate (pallet plate)
9 leg 10 flap 11 cut-and-raised piece 14 communication hole (for flap) 15 communication hole (for cut-and-raised piece) L bending line

Claims (1)

A cardboard pallet board with a rectangular plan view;
A plurality of cardboard legs provided on the lower surface of the pallet plate;
A cardboard pallet formed integrally with the pallet plate at the periphery of the pallet plate, having a cardboard flap for folding upward along a folding line and overlapping with the lower part of the packaging case,
The flap has a communication hole for fitting a joint when the lower part of the packaging case is overlapped,
A cut-and-raised piece having a communication hole is provided in a part of the pallet plate on the side opposite to the flap with respect to the folding line and facing the communication hole formed in the flap. Cardboard pallet.

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