JP3586621B2 - Cardboard box - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cardboard box that retains its shape by bending.
[0002]
[Prior art]
BACKGROUND ART Conventionally, in order to transport agricultural products and the like, a cardboard box in which a blank as shown in FIG. 7 is assembled into a shape as shown in FIG. 8 has been used.
[0003]
The cardboard box includes a pair of side walls 51 and an end wall 52 around a bottom wall 50, and the side wall 51 is formed of an outer plate 53, a frame plate 54, and an inner plate 55 that are sequentially connected to side edges of the bottom wall 50, The end wall 52 is formed of an outer end plate 56, a frame plate 57, and an inner end plate 58 that are sequentially connected to the edge of the bottom wall 50.
[0004]
The folded pieces 59 and 60 extend from the edges of the outer plate 53 and the inner plate 55, and are sandwiched between the outer end plate 56 and the inner end plate 58, so that the side wall 51 and the end wall 52 stand up. Is maintained.
[0005]
In the end wall 52, through holes 61 and 62 are formed in the outer end plate 56 and the inner end plate 58, respectively, and these are aligned with the through holes 63 formed in the folding pieces 59 and 60, so that the end wall 52 is formed. A penetrating handle hole 64 is formed.
[0006]
In this corrugated cardboard box, the corrugation of the corrugated cardboard is oriented in the direction connecting the side walls 51, 51, and the upper and lower edges of the through holes 61 to 63 are almost aligned in the handle hole 64.
[0007]
[Problems to be solved by the invention]
However, in the cardboard box as described above, in the blank state, the members forming the side walls 51 and the end walls 52 extend in a cross shape from the bottom wall 50. There is a problem that the material is not used at the four corners of the box blank and the material cannot be used efficiently.
[0008]
Further, in assembling, there is also a problem that it is difficult to bend the frame plate 57 or the like having a small width and parallel to the steps accurately and quickly along the ruled line.
[0009]
In addition, when the inner end plate 58 is flipped up and disassembled, if the upper edge and the lower edge of the through holes 61 to 63 forming the handle holes 64 are aligned, there is no place to put a finger on the inner end plate 58, and workability is improved. There is also a problem that is bad.
[0010]
Therefore, an object of the present invention is to provide a cardboard box that can use materials efficiently and is easy to assemble and disassemble.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a pair of side walls and an end wall around a bottom wall, the side walls are formed of an outer plate, a frame plate, and an inner plate that are sequentially connected to the bottom wall, and the end wall has a bottom surface. In a cardboard box formed of an outer end plate, a frame plate and an inner end plate sequentially connected to a wall, and a folded piece extending from the outer plate is sandwiched between the outer end plate and the inner end plate to maintain the upright state of the side wall and the end wall. By inclining the corrugation of the corrugated cardboard by 45 °, diagonally cutting the tip corners of the inner plate and the inner end plate, and matching the through-holes drilled in the outer end plate, the inner end plate and the folding piece, Forming a handle hole penetrating the end wall, cutting at least one of the upper edge and the lower edge of the through hole of the folding piece larger than the through hole of the inner end plate, forming a step in these through holes, The engagement projections provided at the tips of the inner plate and the inner end plate were inserted into the engagement holes for fixing .
[0012]
With this configuration, not only the area of the blank is reduced, but also the blank has a shape close to a square, so that the blanks of a plurality of cardboard boxes can be used efficiently by arranging the blanks so that the oblique sides are adjacent to each other.
[0013]
In addition, since the ruled lines of the side wall and the end wall both intersect at an angle at the step, it is possible to accurately and quickly bend and assemble along the ruled lines.
[0014]
Further, when the through holes formed in the outer end plate, the inner end plate, and the insertion piece are matched with each other to form a handle hole penetrating the end wall, at least one of the upper edge and the lower edge of the through hole of the insertion piece. Is cut larger than the through hole of the inner end plate, and a step is formed between the inner end plate and the through hole of the folding piece, so that it can be easily disassembled by hanging a finger on the step and flipping up the inner end plate. .
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS.
[0016]
In this blank of the cardboard box, as shown in FIG. 1, a cardboard sheet of material is used in a state where the step is inclined by 45 °, and an outer plate 2 and a frame plate are provided on two opposite sides of the bottom wall 1. An outer end plate 5, a frame plate 6, and an inner end plate 7 are sequentially provided on the other two opposite sides of the inner plate 3 and the inner plate 4, respectively. Folded pieces 8 and 9 are respectively connected to both side edges of the outer plate 2 and the inner plate 4, and the tip corners of the inner plate 4, the inner end plate 7 and the folded pieces 8 and 9 are cut obliquely.
[0017]
Engagement projections 10 are provided at the tips of the inner plate 4 and the inner end plate 7, and four engagement holes 11 are formed on the bottom wall 1 along the ridge line between the outer plate 2 and the outer end plate 5. Have been. Through holes 12 and 13 are formed in the outer end plate 5 and the inner end plate 7, and a through hole 14 is formed in each of the folding pieces 8, and the through hole 14 is cut more than the through holes 12 and 13. .
[0018]
In order to assemble such a blank, first, as shown in FIG. 2, the outer plate 2 is erected from the bottom wall 1, the frame plate 3 is bent in the horizontal direction inside, and the inner plate 4 is sequentially bent downward, and the engagement protrusion is formed. 10 is inserted into the engaging hole 11 to form the side wall 15.
[0019]
Thereafter, the folding piece 9 is bent inward, the two folding pieces 8 and 8 are bent inward and overlapped, and the outer end plate 5 is erected from the bottom wall 1, and as shown in FIG. The inner end plate 7 is sequentially bent downward in the horizontal direction, and the engagement protrusion 10 is inserted into the engagement hole 11 to form the end wall 16.
[0020]
When assembled in this manner, the side wall 15 and the end wall 16 are engaged with each other and held upright, and the through holes 12 to 14 are aligned to form a handle hole 17 that passes through the end wall 16. A lid 18 is placed on the upper part of the box as needed.
[0021]
In the above-mentioned corrugated cardboard box, not only the area of the blank is reduced, but also the blank has a shape close to a square. Therefore, the blanks of a plurality of boxes can be arranged side by side so that the material can be used efficiently.
[0022]
Further, since the ruled lines on both sides of the frame plates 3 and 6 cross each other at an angle at the step, the frame plates 3 and 6 can be bent accurately and quickly along the ruled lines in the assembling process.
[0023]
In addition, at the time of disassembly, it is possible to easily disassemble by putting a finger on the oblique side of the inner end plate 7 and flipping up the inner end plate 7, and in the handle hole 17, as shown in FIG. Since the lower edge is cut more than the through-hole 13 and the step is formed in the through-holes 13 and 14, even if the inner end plate 7 is flipped up with a finger on the step, it can be easily disassembled.
[0024]
Here, if the step between the through holes 13 and 14 is 8 mm or more, it is easy to put a finger, and if the lower edge of the through hole 12 is cut slightly larger than the through hole 13, it becomes easy to insert a finger into the handle hole 17.
[0025]
Alternatively, the upper edge of the through hole 14 may be cut larger than the through hole 13 and a finger may be put on the step to easily disassemble. In this case, the upper edge of the through-hole 12 is cut in order to improve the finger insertion into the handle hole 17.
[0026]
Next, a second embodiment of the present invention will be described with reference to FIGS. 5 and 6, focusing on differences from the first embodiment.
[0027]
In this corrugated cardboard box, as shown in FIG. 5, the inner corners of the inner plate 4, the inner end plate 7, and the folding pieces 8, 9 are more greatly cut off than those of the first embodiment, as shown in FIG. As described above, since the front end of the inner end plate 7 does not reach the bottom wall 1, the engagement projections 10 are provided on both sides of the inner end plate 7, and both ends of the inner plate 4 are along the ridge line with the folding pieces 9. An engagement hole 11 is formed.
[0028]
With this configuration, the amount of material used can be further reduced, and the inner end plate 7 can be disassembled by placing a finger on the lower edge thereof.
[0029]
【The invention's effect】
As described above, in the present invention, the side wall is formed from the outer plate, the frame plate and the inner plate sequentially connected to the bottom wall, and the end wall is formed from the outer end plate, the frame plate and the inner end plate sequentially connected to the bottom wall. In a corrugated cardboard box in which a folded piece extending from an outer plate is sandwiched between an outer end plate and an inner end plate to maintain a shape, a step of the corrugated cardboard material is inclined by 45 °, and the tip corners of the inner plate and the inner end plate are inclined. As a result, not only the area of the blank is reduced, but also the blank has a shape close to a square, and the blanks of a plurality of cardboard boxes can be arranged side by side so that the material can be used efficiently.
[0030]
In addition, since the ruled lines of the side wall and the end wall both intersect at an angle at the step, it is possible to accurately and quickly bend and assemble along the ruled lines.
[0031]
Furthermore, in the handle hole, at least one of the upper edge and the lower edge of the through hole of the insertion piece was cut larger than the through hole of the inner end plate, so that a step was formed between the inner end plate and the insertion hole. The inner end plate is flipped up by putting a finger on the step and can be easily dismantled.
[Brief description of the drawings]
1 is a view showing a blank according to a first embodiment; FIG. 2 is a perspective view showing an assembling process of the same; FIG. 3 is a perspective view showing an assembled state of the same; FIG. FIG. 6 is a view showing a blank of the second embodiment. FIG. 6 is a perspective view showing an assembling process of the same. FIG. 7 is a view showing a blank of a conventional example. FIG. 8 is a perspective view showing an assembled state of the same.
DESCRIPTION OF SYMBOLS 1 Bottom wall 2 Outer plate 3 Frame plate 4 Inner plate 5 Outer end plate 6 Frame plate 7 Inner end plate 8, 9 Folding piece
10 Engagement projection
11 Engagement holes 12 to 14 Through hole 15 Side wall 16 End wall 17 Handle hole

Claims (1)

A pair of side walls 15 and an end wall 16 are provided around the bottom wall 1, and the side walls 15 are formed of an outer plate 2, a frame plate 3 and an inner plate 4 that are sequentially connected to the bottom wall 1, and the end wall 16 is formed of the bottom wall 1. , A folding piece 8 formed from an outer end plate 5, a frame plate 6 and an inner end plate 7, and extending from the outer plate 2, is sandwiched between the outer end plate 5 and the inner end plate 7 to form side walls 15 and end walls. In the corrugated cardboard box maintaining the standing state of No.16, the step of the corrugated cardboard material is inclined by 45 °, the tip corners of the inner plate 4 and the inner end plate 7 are cut obliquely, and the outer end plate 5, the inner end plate 7 and The through-holes 12 to 14 formed in the insertion piece 8 are aligned with each other to form a handle hole 17 penetrating the end wall 16, and at least one of the upper edge and the lower edge of the through-hole 14 of the insertion piece 8 is The inner end plate 7 is cut to be larger than the through-hole 13 to form a step in the through-holes 13 and 14, and the inner plate 4 and the inner end are formed. Cardboard box, characterized in that inserted the engagement projections 10 provided on 7 the tip of the engaging hole 11 for fixing.

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