JPH05193642A - Packing box - Google Patents

Abstract

PURPOSE:To obtain a packing box whose sides can be prevented from deformation under weight from above. CONSTITUTION:The subject relates to a packing box of cardboard such as corrugated board. The bottom board 11 being rectangular in plan figure is extended to sideboards 12-15 at the four sides and each of the longer sides 20, 20 of the bottom board 11, as seen in the development of the packing box, forms an arc gently curving toward the sideboard 12, 14 extending from the longer side 20 and over the full length between the shorter opposite sides 21, 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box made of cardboard or other cardboard used for packaging products.

[0002]

2. Description of the Related Art As an example of a conventional packaging box made of thick paper such as corrugated cardboard, one having a configuration as shown in FIGS. 9 and 10 is known. Hereinafter, referring to the drawings,
Reference numeral 1 is a bottom plate having a rectangular shape in plan view, and side plates 2 to 5 are continuously provided on four sides of the bottom plate 1. 6 to 9 are flaps for forming an upper lid, which are continuously provided on the upper ends of the side plates 2 to 5.

[0003]

However, when the objects to be stored are stored in the conventional packaging box and stacked in a plurality of stages, the bottom plate 1 of the packaging box is entirely adhered to the upper surface or floor of the lower packaging box. However, there is a problem that the lower packaging box is applied with a load from above and the side plates 2 to 5 of the packaging box, especially the long side side plates 2 and 4 are deformed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a packaging box capable of preventing the side plate from being deformed due to the load from above.

[0005]

In order to solve this problem, the present invention is a packaging box made of cardboard or other thick paper, in which side plates are connected to four sides of a bottom plate having a planar rectangular shape. In the state where the packaging box is unfolded, one set of opposing sides of the bottom plate has an arcuate portion gently curved toward the side plate connected to one set of opposing sides between the opposing sides of the other set. Further, the present invention is a packaging box made of cardboard or other cardboard, wherein side plates are connected to four sides of a bottom plate having a planar rectangular shape, and when the packaging box is unfolded, one pair of opposite sides of the bottom plate are , Between the opposite sides of the other set, which has an arcuate portion gently curved toward the side plate connected to the pair of opposite sides, and an arcuate portion gently curved toward the bottom plate.

[0006]

With this configuration, a gap is created between the bottom plate of the packaging box made of cardboard and other cardboard and the upper surface or floor of the lower packaging box, and even if a weight is applied to the packaging box from above, the side plate of the packaging box is formed. Does not deform and does not deteriorate the quality during transportation and storage.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, the first aspect of the present invention based on FIGS.
Examples will be described.

In the figure, 11 is a bottom plate having a rectangular plan shape,
Side plates 12 to 15 are continuously provided on four sides of the bottom plate 11. 16
Numerals 19 to 19 are upper lid forming flaps which are continuously provided on the upper ends of the side plates 12 to 15. Also, when the packaging box is unfolded, the bottom plate
The long sides 20, 20 of 11 have an arc shape that gently curves toward the side plates 12, 14 connected to the long sides 20, 20 over the entire length between the opposing short sides 21, 21. The packaging box is made of cardboard or other cardboard.

In the above configuration, when the packaging box is placed on a flat floor surface, the bottom plate 11 is in a state of being directed upward along the whole, and a gap 22 is formed below the bottom plate 11. As a result, when the objects to be stored are stored in the packaging box and stacked in a plurality of stages, a gap 22 is formed between the bottom plate 1 of the packaging box and the upper surface or floor surface of the lower packaging box, and the gap 22 has a cushioning effect. Even if a weight is applied to the packaging box from above, the side plate 12 of the packaging box
There is no problem that ~ 15, especially the side plates 12 and 14 are deformed.

Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, in the unfolded state of the packaging box, each long side 20 of the bottom plate 11 has straight line portions 23, 23 at right angles to the short side 21 in the vicinity of the connecting portion with the opposing short sides 21, 21, and the straight line Long side 2 between the parts 23 and 23
It has arcuate portions 24, 24 that are gently curved toward the side plates 12, 14 connected to 0, 20.

In the above structure, when the packaging box is placed on a flat floor surface, both end portions of the bottom plate 11 below the both end portions of the side plates 12 and 14 are in surface contact with the floor surface. A state along the upper side is formed, and a gap 25 is formed on the lower side. As a result, when the articles to be stored are stored in the packaging box and stacked in a plurality of stages, the bottom plate 1 of the packaging box has a gap 25 between the upper surface and the floor surface of the lower packaging box except for both ends thereof. Gap 25
Exerts a cushioning effect, and there is no problem that the side plates 12 to 15, especially the side plates 12 and 14 of the packaging box are deformed even if a load is applied to the packaging box from above.

Next, a third embodiment of the present invention will be described with reference to FIGS. In this embodiment, in the unfolded state of the packaging box, each long side 20 of the bottom plate 11 has straight line portions 26, 26 at right angles to the short side 21 in the vicinity of the connecting portion with the opposing short sides 21, 21, and the straight line 2 long sides between the parts 26, 26
It has arcuate portions 27 and 27 that are gently curved toward the side plates 12 and 14 connected to 0 and 20, and arcuate portions 28 and 28 that are gently curved toward the bottom plate 11 side.

In the above configuration, when the packaging box is placed on a flat floor surface, the central portion of the bottom plate 11 between the opposing short sides 21, 21 is inflated downward, so that portion is on the floor surface. Bottom plate 11 in the area other than this contact area
A gap is formed on the lower side of the. As a result, when the objects to be stored are stored in the packaging box and stacked in a plurality of stages, the bottom plate 1 of the packaging box creates a gap between the upper surface and the floor surface of the lower packaging box except the central portion, and the gap Exerts a cushioning effect, and there is no problem that the side plates 12 to 15, especially the side plates 12 and 14 of the packaging box are deformed even if a load is applied to the packaging box from above.

[0014]

As described above, according to the present invention, a gap is created between the bottom plate of a packaging box made of cardboard or other cardboard and the upper surface or floor of the lower packaging box, and the weight is applied to the packaging box from above. Even if added, the side plate of the packaging box does not deform, and the quality during transportation and storage does not deteriorate.

[Brief description of drawings]

FIG. 1 is a development view of a packaging box showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the assembly.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a development view of a packaging box showing a second embodiment of the present invention.

FIG. 5 is a perspective view of the assembly.

FIG. 6 is a development view of a packaging box showing a third embodiment of the present invention.

FIG. 7 is a perspective view of the assembly.

8 is a sectional view taken along line YY of FIG.

FIG. 9 is a development view of a packaging box showing a conventional example.

FIG. 10 is a perspective view of the assembly.

[Explanation of symbols]

 11 Bottom plate 12 to 15 Side plate 20 Long side 21 Opposing short side 22 Gap 23 Straight part 24 Arc part 25 Gap 26 Straight part 27 Arc part 28 Arc part 29 Gap

Claims (2)

[Claims] 1. A packaging box made of cardboard or other cardboard, wherein side plates are connected to four sides of a bottom plate having a planar rectangular shape, and when the packaging box is unfolded, one pair of opposite sides of the bottom plate are , A packaging box having an arcuate portion gently curving toward the side plate connected to one set of opposing sides between the other sets of opposing sides. 2. A packaging box made of cardboard or other cardboard, wherein side plates are connected to four sides of a bottom plate having a planar rectangular shape, and when the packaging box is unfolded, one pair of opposite sides of the bottom plate are , A packaging box having an arcuate portion gently curving toward the side plate side, which is connected to one set of opposing sides, between the other sides of the other set, and an arcuate portion gently curving toward the bottom plate side.