JP7655263B2 - Partition - Google Patents

Description

The present invention relates to a cardboard partition for storing items in a partitioned space.

Conventionally, when multiple items are packaged together, it is widely known that each of the multiple items is placed in a space provided in the packaging device.

For example, Patent Document 1 describes a device in which multiple vibrators, which are composites of metal and ceramic, are inserted and fixed into holes formed in a lower laminate made of cardboard, which is then covered with an upper laminate made of cardboard with a similar structure and stored in a box, while Patent Document 2 describes a device in which multiple products are placed and fixed in recesses formed in a cardboard sheet tray for packaging.

Japanese Patent Application Publication No. 09-131569 Republished WO2018/003019

Incidentally, packaging boxes with plastic partitions are considered as a means for packaging a large number of small items such as parts, but in recent years, in light of the worsening global problem of plastic waste, it is necessary to consider replacing plastic with other materials as much as possible in order to improve the global environment. Here, for example, if a large number of small items are to be packaged using packaging devices such as those described in Patent Documents 1 and 2 instead of plastic with cardboard, it would be necessary to make many small holes and recesses in the cardboard, and it is thought that it would be costly and laborious to dispose of the small pieces of paper generated by the hole-making process. Therefore, there is still room for improvement in cardboard structures for packaging a large number of small items.

The object of the present invention is to provide a cardboard partition that can easily package a large number of small items.

The partition according to the present invention is a cardboard partition that includes a base and a partition that is stacked on the base, and is capable of storing items in a space partitioned by the partition. The base has a flat plate and a number of protrusions arranged on the flat plate along the edge of the plate. The partition is made of a number of partition pieces that are created by dividing a single cardboard sheet by forming a concave-convex cut line from one edge to the other edge opposite the one edge, and at least one of the plurality of partition pieces is configured so that its end is fixed in position between the adjacent protrusions of the base, and the partitioned space is formed by the adjacent partition pieces straddling the protrusions at a certain distance due to the position fixing.

According to the present invention, by simply forming uneven cut lines from one edge to the other in a single cardboard sheet and spacing the divided partition pieces a certain distance apart, it is possible to form a large number of partitioned spaces, making it possible to easily package a large number of small items.

FIG. 1 is a perspective view of a partition according to an embodiment of the present invention. FIG. 2 is a perspective view of a base portion according to an embodiment of the present invention. FIG. 2 is a perspective view of a partition according to an embodiment of the present invention. FIG. 1 is a perspective view of a box containing a divider according to an embodiment of the present invention and containing small items in the divider. FIG. 2 is a plan view of a base blank according to one embodiment of the present invention. FIG. 2 is a plan view of a blank for a partition formed by cutting multiple rows of concave and convex cut lines into a single cardboard sheet according to one embodiment of the present invention. 7A and 7B are diagrams showing partition pieces formed into pieces by the cut lines shown in Figure 6 according to one embodiment of the present invention, where (a) is a plan view of one of the pair of left and right partition pieces on the end sides (the left end side in Figure 6), (b) is an oblique view of one of the pair of left and right partition pieces on the end sides (the left end side in Figure 6), (c) is an oblique view of the other of the pair of left and right partition pieces on the end sides (the right end side in Figure 6), (d) is a plan view of the middle partition piece, and (e) is an oblique view of the middle partition piece.

Below, a detailed description of an embodiment of the present invention will be given with reference to Figs. 1 to 7. However, the present invention is not limited to this embodiment. In this specification and the claims, "rectangle" includes rectangular and approximately rectangular shapes as well as square and approximately square shapes. In this specification, a "group number" refers to a number of 2 or more, including several tens of numbers.

Figure 1 is a perspective view of a partition D according to one embodiment of the present invention, Figure 2 is a perspective view of a base portion 1 of the partition D according to this embodiment, and Figure 3 is a perspective view of a partition portion 2 of the partition D according to this embodiment. Also, Figure 4 is a perspective view of a box 3 that houses the partition D according to this embodiment and contains a number of small items N in the partition D. Furthermore, FIG. 5 is a plan view of blank 1B of base 1 according to this embodiment, FIG. 6 is a plan view of blank 2B of partition 2 formed by cutting multiple rows of concave-convex cut lines CL into a single cardboard sheet according to this embodiment, and FIG. 7 is a diagram showing partition pieces 21a and 21b formed into pieces by the cut lines shown in FIG. 6 according to this embodiment, where FIG. 7(a) is a plan view of one of the pair of left and right partition pieces 21a on the end side (left end side in FIG. 6), FIG. 7(b) is a perspective view of one of the pair of left and right partition pieces 21a on the end side (left end side in FIG. 6), FIG. 7(c) is a perspective view of the other of the pair of left and right partition pieces 21a on the end side (right end side in FIG. 6), FIG. 7(d) is a plan view of the middle partition piece 21b, and FIG. 7(e) is a perspective view of the middle partition piece 21b.

As shown in FIG. 4, the package according to this embodiment is constructed by placing a partition D at the bottom of a plastic box 3 and storing small items N (in this embodiment, 50 small nails) in the partition D. However, in this invention, the items N may be any items as long as the effects of the invention are realized, and examples of such items include small parts such as screws, bolts, and nuts.

As shown in Figures 1 to 5, the partition D in this embodiment is made of cardboard and comprises a base portion 1 and a partition portion 2 stacked on the base portion 1, and is capable of storing items N in a space S partitioned by the partition portion 2. The base portion 1 has a flat plate 11 and a plurality of protrusions 13 arranged on the flat plate 11 along an edge L1 of the flat plate 11. The partition portion 2 is composed of a plurality of partition pieces 21a, 21b generated by dividing a single cardboard sheet by forming an uneven cut line CL from one edge to the other edge opposite the one edge. At least one of the plurality of partition pieces 21a, 21b (represented by the symbol 21b in this embodiment) is configured so that its end is positioned and fixed between adjacent protrusions 13 of the base portion 1. The partitioned space S is formed by the adjacent partition pieces 21a, 21b being spaced a certain distance apart across the protrusions 13 due to this positional fixation.

As shown in Figs. 2 and 3, in the base 1 according to this embodiment, five protrusions 13 are arranged on the flat plate 11 along the edge L1 of the flat plate 11, and extend from the crosspiece 12 so as to be bridged by the crosspiece 12. With this configuration, the five protrusions 13 are reinforced by the crosspiece 12. In the present invention, the crosspiece 12 and the protrusions 13 can be adhesively fixed to the flat plate 11. Note that the present invention may be configured without the crosspiece 12 as long as the effects of the present invention are achieved.

The blank 1B of the base 1 in this embodiment is formed from a single-flute cardboard sheet (double-sided cardboard sheet), and as shown in FIG. 5, a pair of ribs 12 are connected to a pair of opposing fold lines L1 of the flat plate 11, and the base 1 is in the state shown in FIG. 2 by folding back the pair of ribs 12 and the protrusions 13 extending therefrom at the pair of fold lines L1 of the flat plate 11 toward the flat plate 11 and adhesively fixing them to the flat plate 11 as necessary.

The concave and convex cut lines CL formed in the partition section 2 according to this embodiment are rectangular wave-shaped cut lines CL with a reference line passing through the origin as X and an amplitude of A, as shown in FIG. 6. Five rectangular wave-shaped cut lines CL are formed in the partition section 2 in parallel to each other, and the pair of left and right end partition pieces 21a and three inner partition pieces 21b can be separated. The blank 2B of the partition section 2 according to this embodiment is formed from one double-flute cardboard sheet (double-sided cardboard sheet). In this embodiment, the pair of left and right end partition pieces 21a and the three inner partition pieces 21b are not completely separated from each other but are spaced apart by a certain distance, so that the thickness of the cardboard acts as a partition wall to surround the small item N, and the small item N can be stored in the partitioned space S. In this embodiment, the partitioned space S is rectangular, but in the present invention, various shapes such as a rhombus can be adopted depending on the shape of the item to be stored. In addition, in the present invention, the shape of the cut lines CL formed in the partition section 2 can be an uneven shape other than a rectangular wave shape, as long as a partitioned space S is formed by separating adjacent partition pieces by a certain distance.

As shown in Figures 1 and 4, in the partition D according to this embodiment, the four inner partition pieces 21b are fixed in position by the adjacent protrusions 13 as described above, and the pair of left and right end partition pieces 21a are fixed in position by being sandwiched between the protrusions 13 and the inner wall of the box 3.

As shown in Figs. 1 to 3, in the partition D according to this embodiment, the width g of the partitioned space is equal to the width d of the protrusion 13, that is, the distance between adjacent partition pieces 21b (or partition pieces 21a and 21b) separated by the protrusion 13. The width g of the partitioned space can be designed according to the dimensions of the items to be stored, but in order to achieve the effects of the present invention, it is preferably 3 mm to 50 mm, and more preferably 5 mm to 30 mm.

As shown in FIG. 4, the partition D according to this embodiment is configured to be stored in a plastic box 3. The box 3 is rectangular when viewed from above and has a flattened rectangular parallelepiped shape with a low overall height, and is composed of a lid with a protrusion P and a body with a recess R that can engage with the protrusion P, and the body is configured to be able to store the partition D. The material of the box 3 is plastic, but this is not limited to the present invention, and various materials such as cardboard or thick paper can be used. The shape of the box 3 is also not limited to the present invention, and various shapes can be used as long as the partition D can be stored therein and the effects of the present invention can be achieved.

As shown in Fig. 2, the flat plate 11 of the base 1 in this embodiment has an octagonal shape with the corners rounded off from a rectangle when viewed from above. Similarly, as shown in Figs. 3 and 1, the partition 2 and partition D in this embodiment also have an octagonal shape to match the shape of the flat plate 11. This shape makes it easy to remove the partition D from the box 3. Note that in this invention, the shapes of the flat plate 11, partition 2, and partition D when viewed from above may be rectangular with no rounded off corners, or may be other polygonal shapes.

According to this embodiment, a single cardboard sheet is cut with uneven cut lines CL from one edge to the other, and multiple partition pieces 21a, 21b are separated by a fixed distance to form a large number of partitioned spaces S, making it possible to package a large number of small items N inexpensively and easily.

＜Other＞
The present invention is not limited to the above-described embodiment or the modified examples described throughout the specification, and appropriate changes and modifications can be made without departing from the technical concept of the present invention.

For example, the base portion 1 of the partition D in the above embodiment is formed from a single-flute cardboard sheet, and the partition portion 2 is formed from a double-flute cardboard sheet, but the present invention is not limited to this, and any flute structure may be used as long as the effects of the present invention are achieved. Similarly, the thicknesses of the base portion 1 and the partition portion 2 may be any thickness as long as the effects of the present invention are achieved.

In addition, in the partition D according to the above embodiment, the base part 1 and the partition part 2 are fixed by the protrusion part 13, but the base part 1 and the partition part 2 may be fixed by adhesive.

D Partition 1 Base 11 Flat plate 12 Crosspiece 13 Projection 2 Partition 21a End partition piece 21b Center partition piece 3 Box CL Slit line S Partitioned space L1 Fold line N Article

Claims (5)

A partition made of cardboard, comprising a base portion and a partition portion stacked on the base portion, and capable of storing items in a space partitioned by the partition portion,
The base portion has a flat plate and a plurality of protrusions arranged on the flat plate along an edge of the flat plate,
The partition portion is made up of a plurality of partition pieces produced by forming a concave-convex cut line from one edge to the other edge facing the one edge in a single cardboard sheet, and dividing the single cardboard sheet;
At least one of the partition pieces is configured such that an end portion thereof is positioned and fixed between adjacent protrusions of the base portion;
A partition, characterized in that the partitioned space is formed by the partition pieces being spaced a certain distance apart from each other across the protrusion due to the positional fixation. The partition according to claim 1, characterized in that the unevenness of the cut lines is a rectangular wave shape. The partition according to claim 1, characterized in that the fixed distance is between 3 mm and 50 mm. The partition according to claim 1, characterized in that it is configured to be stored in a box. The partition according to claim 1, characterized in that the flat plate of the base portion has an octagonal shape with the corners rounded off from a rectangle.

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