JP3125882U - Paper assembly box - Google Patents

Abstract

[PROBLEMS] To provide a paper assembly box that can be easily manufactured by folding a single sheet of flat paper, can be stored and transported in an unfolded state, and prevents liquid contained in the contents from leaking outside. provide.
A paper assembly box 10 is assembled by folding along a crease line formed in advance on a sheet of flat paper, and has a rectangular bottom plate part 11 and a bottom crease line 12 respectively on the bottom plate part 11. Side wall plate portions 16 to 19 connected to each other through 15 and inner folding plate portions 38, 39, 43, 44, 48, 49, 53 and 54 connecting the adjacent side wall plate portions 16 to 19 Further, the inner folding plate portions 38, 43, 48, 53 connected to the side wall plate portions 16, 17 at the first outer bending lines 20-23 are provided with the insertion piece portions 41, 46, 51 at the upper portion thereof. , 56 are provided via upper folding lines 42, 47, 52, 57.
[Selection] Figure 1

Description

The present invention relates to a paper assembly box, and more particularly, to a paper assembly box that can reduce manufacturing and transportation costs, is easy to assemble, and hardly leaks liquid from its contents.

2. Description of the Related Art A paper assembly box that is assembled by folding a sheet of planar paper along a crease line formed in advance has been conventionally known and used as a container for storing confectionery or the like (see, for example, Patent Document 1). ).
In addition, when displaying potted plants at a flower shop, the surrounding area was covered with vinyl to prevent the water discharged from the bottom of the pot for seedlings (pots) from overflowing. A paper assembly box made of water-resistant paper is used as a seedling pot cover.

Japanese Patent No. 3608647

However, the conventional paper assembly box is formed by adhering an adhesive plate-like portion connected between the side plate-like portions via a crease line to the outer surface of the side plate-like portion. Therefore, even if the paper used has water resistance, for example, a flow path of water to the outside of the side plate-like part is inevitably formed through the joints of the adhesive plate-like part, and water is generated from there. There was a problem in using as a pot cover for seedlings because of the risk of leakage.
In addition, once assembled boxes cannot be unfolded, they are transported and stored in a completed state. However, when handling a large number of paper assembly boxes, the volume becomes large and bulky, so transport and storage Was inefficient.

The present invention has been made in view of such circumstances, and can be easily manufactured by folding a single sheet of flat paper, and can be stored and transported in an unfolded state. An object of the present invention is to provide a paper assembly box that hardly leaks to the outside.

The paper assembly box according to the first device for the above purpose is a paper assembly box assembled by folding along a crease line formed in advance on a sheet of planar paper, and the four sides are straight lines. Alternatively, a rectangular bottom plate (including a rectangle and a square, the same applies hereinafter) formed in an arc shape, a side wall plate connected to each of four sides of the bottom plate via a bottom crease line, and the adjacent side wall plate And an even number of inner folding plate portions divided by one or more linear crease lines that start at the corners of the bottom plate portion, and the side wall plate portion has a first One of the inner folding plate portions connected by an outer bend line has an upper bent portion in which an insertion piece portion fitted between the adjacent side wall plate portion and the folded inner folding plate portion is bent upward. It is provided via a line.

In the paper assembly box according to the first device, it is preferable that the plurality of inner folding plate portions to be folded are congruent triangles.

In the paper assembly box according to the first aspect, at least one opposing bottom crease line of the bottom plate portion is formed in an arc shape that is bent inward, and the bottom fold line is formed at a lower portion of the side wall plate portion. An arc-shaped second outer bend line that bends outwardly starting from the corner of the bottom plate portion may be formed at the lower portion of the base plate portion.

In the paper assembly box according to the first device, a third is provided with both sides of one of the opposing side wall plate portions out of each of the side wall plate portions, with a leading edge at both bottom end portions of the side wall plate portion. May be formed, and the inner dimension of the side wall plate part may gradually increase toward the upper part.

In the paper assembly box according to the first device, there are four inner folding plate portions connecting the adjacent side wall plate portions, and the inner dimensions of the side wall plate portions are gradually reduced toward the upper part. May be.

The paper assembly box according to the second invention for the purpose is a paper assembly box that is assembled by folding along a crease line formed in advance on a sheet of flat paper, and the four sides are straight lines. Alternatively, a rectangular bottom plate portion formed in an arc shape, a side wall plate portion connected to each of four sides of the bottom plate portion via a bottom crease line, and the adjacent side wall plate portions are connected via an outer bend line. The inner folding plate portion connected to both sides of the opposing side wall plate portion, and having two inner folding plate portions divided by a linear inner bending line starting from a corner of the bottom plate portion Is inserted into the inner side of the side wall plate part, and the inserted piece part to be fitted between the bent inner side plate part and the side wall plate part is the upper part of the inner side folding plate part. Is provided via an upper fold line.

In the paper assembly box according to the second device, the two inner folding plate portions that connect the side wall plate portions adjacent to each other are squares whose side is the height of the side wall plate portion in the unfolded state, The inward bend line may be a diagonal line starting from a corner of the bottom plate portion.

In the paper assembly box according to the second device, the side wall plate portion is preferably square.

In the paper assembly box according to the first or second device, a hole may be formed in the bottom plate portion.

In the paper assembly box according to the present invention, “rectangular” and “square” include not only a case where each side is a straight line but also a case where the outer side or the inner side is bent in an arc shape.

Since the paper assembly box according to the first device is configured by providing a crease line on a single sheet of planar paper, its manufacture is easy. In the assembly, the side wall plate portions provided on the four sides of the bottom plate portion are bent inward, and the inner folding plate portion is turned into a linear crease line that divides the first outer bending line and the inner folding plate portion. It is only necessary to fold along and insert the insertion piece between the adjacent side wall plate and the folded inner folding plate, and no adhesion is required. Therefore, it is possible to provide a paper assembly box that is easy to manufacture and can be stored and transported in a flat state.
In addition, the inner folding plate portion is formed to be bent inside the box, and the upper portion thereof is covered with an insertion piece portion, and a liquid material such as water from the joint of the inner folding plate portion to the outside of the side wall plate portion. Therefore, when used as a seedling pot cover, the problem of water leakage can be improved. Moreover, culture soil can be directly put inside and used as a seedling pot.

In the paper assembly box according to the first invention, when the plurality of inner folding plate portions to be folded are congruent triangles, the overlapping inner folding plate portions all have the same shape when the inner folding plate portion is bent. Therefore, it is easy to fit the plug-in piece part and it is securely fixed by the plug-in piece part, so that deformation and a decrease in strength due to use can be prevented.

In the paper assembly box according to the first device, at least one opposing bottom crease line of the bottom plate portion is formed in an arc shape that bends inward, and the bottom crease line is formed at a lower portion of the side wall plate portion formed in the lower portion. Can increase the strength of the joint between the bottom plate portion and the side wall plate portion when the arc-shaped second outer bend line that is bent outwardly starting from the corner of the bottom plate portion is formed. Can increase the sex.

In the paper assembly box according to the first invention, a third outer bend that originates at both bottom side end portions of the side wall plate portions on both inner sides of one opposing side wall plate portion among the respective side wall plate portions. When each line is formed and the inner dimension of the side wall plate portion gradually increases toward the top, the area of the top opening can be widened, so that the contents can be easily taken out and the pot for seedlings Or it becomes the paper-made assembly box of the shape which is easy to use as a pot cover for seedlings. Further, the design can be enhanced by changing the shape of the side wall plate portion by the third outer bend line to give a stereoscopic effect.

In the paper assembly box according to the first device, when the inner folding plate portion connecting the adjacent side wall plate portions is four pieces, and the inner dimension of the side wall plate portion is gradually reduced toward the upper part, For example, a paper assembly box having a shape suitable for storage of flowers, pens, and the like can be provided without interference between the inner folding plate portions.

Since the paper assembly box according to the second device is configured with a crease line on a single sheet of flat paper, its manufacture is easy. Also in the assembly, the paper assembly box is related to the first device. Like the paper assembly box, the side wall plate provided on the four sides of the bottom plate is folded inward, the inner folding plate is bent inward along the inner bending line, and the inner folding plate is bent. It is only necessary to fit the insertion piece part between the part and the side wall plate part, and adhesion is unnecessary. Therefore, it is possible to provide a paper assembly box that is easy to manufacture and can be stored and transported in a flat state.
Moreover, since the inner folding plate part bent inward is fixed from the one insertion piece part, it can prevent that an inner folding plate part turns up inside a box.
Furthermore, the inner folding plate part connected to both sides of the opposite side wall plate part is bent inward, and the inserted piece part to be fitted between the bent inner folding plate part and the side wall plate part is the innermost side. Since the upper folding line is provided at the upper part of the inner folding plate part located at the position, the number of the insertion piece parts can be reduced to two. Therefore, the assembly of the paper assembly box can be further simplified. Moreover, since the side wall plate portion is reinforced by the inner folding plate portion folded inward, the strength of the paper assembly box is improved.

In the paper assembly box according to the second device, the two inner folding plate portions that connect the adjacent side wall plate portions are squares whose sides are the height of the side wall plate portions in the unfolded state, and the inner bending line Is a diagonal line starting from the corner of the bottom plate portion, the outline of the bottom plate portion, the side wall plate portion, and the inner folding plate portion is rectangular, so that waste of paper at the time of manufacture can be reduced.

In the paper assembly box according to the second device, when the side wall plate portion is a square, the length of the overlapping sides of the side wall plate portion and the inner folding plate portion bent inward becomes equal. The length can be made equal to the length of the upper side of the side wall plate portion. Therefore, the strength of the manufactured paper assembly box can be increased.

In the paper assembly box according to the first and second devices, when a hole is formed in the bottom plate portion, for example, when used as a seed pot, excess water can be discharged to the outside.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a development view of the paper assembly box according to the first embodiment of the present invention, FIG. 2 is a schematic diagram for explaining the assembly process of the paper assembly box, and FIG. 3 is a second view of the present invention. FIG. 4 is a schematic diagram illustrating an assembly process of the paper assembly box according to the embodiment, and FIG. 5 is a development view of the paper assembly box according to the third embodiment of the present invention. FIG. 6 is a schematic view for explaining the assembly process of the paper assembly box.

First, with reference to FIG.1 and FIG.2, the paper assembly box 10 which concerns on the 1st Embodiment of this invention is demonstrated.
FIG. 1 is a development view of the paper assembly box 10 according to the first embodiment of the present invention. Here, the solid line indicates the outline of the paper assembly box 10, and the alternate long and short dash line indicates an outer bend line that is an example of a crease line (valley fold line: a crease line that folds so that the ridges face the outside of the paper assembly box. The same applies to the following), and the broken line means an inward bend line that is an example of a crease line (mountain fold line: a crease line that folds so that the ridges face the inside of the paper assembly box. The same applies to FIGS. 3 and 5).

The square bottom plate portion 11 has four sides formed by a pair of opposing linear bottom crease lines 12 and 13 and a pair of opposing arcuate bottom crease lines 14 and 15.
The side wall plate portion 16 is connected to the bottom plate portion 11 via the bottom crease line 12, has side edges 20 and 21 serving as first outer bending lines, and a base whose inner dimension gradually increases toward the upper portion. Further, the outer bend line (third outer bend line) 28 starting from the corner 32 of the bottom plate portion 11 (also one end portion on the bottom side of the side wall plate portion 16) and the corner 33 ( An outer bend line (third outer bend line) 29, which starts at the other end on the bottom side of the side wall plate portion 16, is formed on both inner sides of the side wall plate portion 16.
The side wall plate portion 17 is connected to the bottom plate portion 11 via the bottom crease line 13, has side edges 22 and 23 that become first outer bending lines, and the inner dimension thereof gradually increases toward the top. Further, the outer bend line (third outer bend line) 30 starting from the corner 34 of the bottom plate portion 11 (which is also the bottom side one end portion of the side wall plate portion 17) and the corner 35 ( An outer bend line (third outer bend line) 31, which originates at the other end on the bottom side of the side wall plate portion 17, is formed on both inner sides of the side wall plate portion 17.

The side wall plate portion 18 is connected to the bottom plate portion 11 via the bottom crease line 14 and has side edges 24 and 25 serving as first outer bending lines. In addition, an arcuate outer bend line (second outer bend line) 36 that bends outward from the corners 33 and 35 of the bottom plate portion 11 is formed at the lower portion of the side wall plate portion 18.
The side wall plate portion 19 is connected to the bottom plate portion 11 via the bottom crease line 15 and has side edges 26 and 27 that serve as first outer bending lines. In addition, an arcuate outer bend line (second outer bend line) 37 that is bent outwardly starting from corners 32 and 34 of the bottom plate portion 11 is formed at the lower portion of the side wall plate portion 19.

Between the adjacent side wall plate parts 16 and 18, two inner sides divided by an inner bend line (an example of a straight crease line, the same applies hereinafter) 40 that bisects the angle formed by the side edges 21 and 24. Folding plate portions 38 and 39 are formed, and the side wall plate portions 16 and 18 are connected. In the case where two inner folding plate portions are formed between adjacent side wall plate portions as in the paper assembly box 10 according to the present embodiment, the two inner folding plate portions are formed. Needs to be divided by an inner bend line so that it can be folded during assembly.
Here, since the sides 21 and 24 that come into contact with each other when the paper assembly box 10 is assembled are equal in length, the inner folding plate portions 38 and 39 having the same length and the same angle are formed in congruent triangles. . Further, an insertion piece portion 41 is formed on the upper side of the inner folding plate portion 38 connected to the side wall plate portion 16 at the side 21 via an upper folding line 42.

Between the side wall plate portions 17 and 18 adjacent to each other, two inner folding plate portions 43 and 44 divided by an inner bending line 45 that bisects the angle formed by the side sides 23 and 25 are formed. The parts 17 and 18 are connected.
Here, since the sides 23 and 25 that come into contact with each other when the paper assembly box 10 is assembled are equal in length, the inner folding plate portions 43 and 44 having the same length and the narrow angle of the two sides are congruent triangles. . In addition, an insertion piece portion 46 is formed on the upper side of the inner folding plate portion 43 connected to the side wall plate portion 17 at the side 23 via an upper folding line 47.

Between the adjacent side wall plate portions 17 and 19, two inner folding plate portions 48 and 49 divided by an inner bending line 50 that bisects the angle formed by the side edges 22 and 27 are formed, and the side wall plate The parts 17 and 19 are connected.
Here, since the sides 22 and 27 that come into contact when the paper assembly box 10 is assembled have the same length, the inner folding plate portions 48 and 49 having the same two sides and the same angle are formed into congruent triangles. . Further, an insertion piece portion 51 is formed on the inner folding plate portion 48 connected to the side wall plate portion 17 at the side 22 via an upper folding line 52.

Between the adjacent side wall plate portions 16 and 19, two inner folding plate portions 53 and 54 divided by an inner bending line 55 that bisects the angle formed by the sides 20 and 26 are formed, and the side wall plate The parts 16 and 19 are connected.
Here, since the sides 20 and 26 that come into contact with each other when the paper assembly box 10 is assembled are equal in length, the inner folding plate portions 53 and 54 having the same two sides and the same angle are formed into congruent triangles. . In addition, an insertion piece portion 56 is formed on the upper side of the inner folding plate portion 53 connected to the side wall plate portion 16 at the side 20 via an upper folding line 57.

Next, an assembly process of the paper assembly box 10 will be described with reference to FIG. In FIG. 2, the assembly process is divided into four processes (a) to (d) for explanation, but this classification is for convenience of explanation.
First, raw paper (one sheet of planar paper) is cut into the predetermined shape shown in FIG. 1 to form an outer bend line and an inner bend line (step (a)). Next, the side wall plate portions 16 and 17 are bent along the bottom crease lines 12, 13, 14, and 15 that form the four sides of the bottom plate portion 11, and are connected to the bottom plate portion 11 through the bottom crease lines 12 to 15. , 18, 19 are launched. At that time, the outer bend lines 36 and 37 provided at the lower portions of the side wall plate portions 18 and 19 are also bent together.

Next, along the side edges (outer bend lines) 20, 21, 22, 23, 24, 25, 26, 27 and inner bend lines 40, 45, 50, 55 of the side wall plate portions 16, 17, 18, 19 And the adjacent inner folding plate portions 38 and 39, 43 and 44, 48 and 49, and 53 and 54 overlap each other. In addition, the outer bend lines 28, 29, 30, and 31 provided on the side wall plate portions 16 and 17 are also bent together (step (b)). Next, the insertion piece 41 connected above the inner folding plate 38 via the inner bending line 42 is bent adjacent to the inner folding plate 38 so as to overlap the inner folding plate 38, and adjacent thereto. It fits between the side wall plate part 18 (above, step (c)), and the insertion piece part 46 is similarly fitted between the inner folding plate part 44 and the side wall plate part 18 adjacent thereto (above, Step (d)). Although not shown in the drawing, the other inner folding plate portions 43, 44, 48, 49, 53, 54 and the insertion piece portions 46, 51, 56 are similarly bent, and the paper assembly box 10 is assembled. To manufacture.

There are no particular restrictions on the raw paper that can be used to manufacture the paper assembly box 10, but it must be able to support at least its own weight and the weight of the contents, and have strength and thickness that can withstand bending. . Examples of raw paper having these properties include cardboard and corrugated cardboard. Coated cardboard with a beautiful finish is preferably used.
The thickness of the raw paper is appropriately selected according to the size and application of the paper assembly box, but a slightly thick paper of about 270 to 350 g / m ² is preferable in terms of strength and durability.
When the paper assembly box 10 is used for a seedling pot cover or the like that requires water resistance, a water-proof raw material paper can be used. Moreover, a pattern etc. may be printed on the front and back of raw material paper as needed, or a decorative sheet may be stuck.

The cutting of the raw paper can be performed by any method such as punching with a punching die (Thomson processing). The formation of the crease line can also be performed by an arbitrary method such as roller processing.

Next, with reference to FIG.3 and FIG.4, the paper assembly box 110 which concerns on the 2nd Embodiment of this invention is demonstrated.
FIG. 3 shows a development view of the paper assembly box 110 according to the second embodiment of the present invention.
The square bottom plate portion 111 has four sides formed by a pair of linear bottom crease lines 112 and 113 and a pair of arcuate bottom crease lines 114 and 115 bent inward.
The side wall plate portion 116 is connected to the bottom plate portion 111 via the bottom crease line 112 and has a trapezoidal shape in which the inner dimension gradually decreases toward the upper side, and the side sides 120 and 121 serving as the first outer bending line. Have
The side wall plate portion 117 is connected to the bottom plate portion 111 through the bottom crease line 113 and has a trapezoidal shape in which the inner dimension gradually decreases toward the upper side, and the side edges 122 and 123 serving as first outer bending lines. Have

The side wall plate portion 118 is connected to the bottom plate portion 111 via the bottom crease line 114, has a trapezoidal shape in which the inner dimension gradually decreases toward the upper side, and the side sides 124 and 125 serving as the first outer bending line. Have Further, the side wall plate portion 118 is formed with an arc-shaped outer bend line (second outer bend line) 136 that is bent outwardly starting from the corners 133 and 135 of the bottom plate portion 111.
The side wall plate portion 119 is connected to the bottom plate portion 111 via the bottom crease line 115 and has a trapezoidal shape in which the inner dimension gradually decreases toward the upper side, and the side edges 126 and 127 serving as first outer bending lines. Have Further, the side wall plate portion 119 is formed with an arc-shaped outer bend line (second outer bend line) 137 that is bent outward and starts at corners 132 and 134 of the bottom plate portion 111.

In the paper assembly box 110, the four side wall plate portions 116, 117, 118, and 119 are configured such that the assembled paper assembly box 110 has a vertically elongated shape in which the inner dimension gradually decreases toward the upper side. Has been.
Therefore, between the adjacent side wall plate portions 116 and 118, the inner bend lines 140 and 140a and the outer bend lines 140 and 140a that divide the angle formed by the side sides 121 and 124 into four equal parts are arranged. Four inner folding plate portions 138, 138a, 139a, 139 divided by the bending line 158 are formed, and the side wall plate portions 116 and 118 are connected.
Here, if the lengths of the side sides 121 and 124 and the outer bend line 158 are equal, and the inner bend lines 140 and 140a are equal in length, the inner folding plate portions 138 and 138a having the same two side lengths and the same angle are used. 139a and 139 are all congruent triangles.
Further, an insertion piece portion 141 is formed on the inner folding plate portion 138 connected to the side wall plate portion 116 on the side edge 121 via an upper folding line 142.

Similarly, between the side wall plate portions 117 and 118 adjacent to each other, the angle formed by the side edges 123 and 125 is equally divided into four, which are located between the inner bend lines 145 and 145a and the inner bend lines 145 and 145a. Four inner folding plate portions 143, 143a, 144a, 144 divided by the outer bending line 159 are formed, and the side wall plate portions 117 and 118 are connected.
Here, if the lengths of the side sides 123 and 125 and the outer bend line 159 are equal and the lengths of the inner bend lines 145 and 145a are equal to each other, the inner folding plate portions 143 and 143a having the same two side lengths and the same sandwich angle are used. 144a and 144 are all congruent triangles.
Further, an insertion piece portion 146 is formed on the upper side of the inner folding plate portion 143 connected to the side wall plate portion 117 at the side edge 123 via an upper folding line 147.

Further, between the adjacent side wall plate portions 117 and 119, the inner bend lines 150 and 150a and the outer bend lines 150 and 150a, which divide the angle formed by the side edges 122 and 127 into four equal parts, are arranged. Four inner folding plate portions 148, 148a, 149a, 149 divided by the bending line 160 are formed, and the side wall plate portions 117 and 119 are connected.
Here, if the lengths of the side sides 122 and 127 and the outer bend line 160 are equal and the inner bend lines 155 and 155a are equal in length, the inner folding plate portions 148 and 148a having the same two side lengths and the same angle are used. 149a and 149 are all congruent triangles.
In addition, an insertion piece 151 is formed on the upper side of the inner folding plate 148 connected to the side wall plate 117 at the side 122 through an upper folding line 152.

Further, between the adjacent side wall plate portions 116 and 119, the inner bend lines 155 and 155a, and the outer bend lines 155 and 155a, which divide the angle formed by the side edges 120 and 126 into four equal parts, are arranged. Four inner folding plate portions 153, 153a, 154a, 154 divided by the bend line 161 are formed, and the side wall plate portions 116 and 119 are connected.
Here, if the lengths of the side sides 120 and 126 and the outer bend line 161 are equal and the lengths of the inner bend lines 155 and 155a are equal to each other, the inner folding plate portions 153 and 153a having the same length of the two sides and the included angle are equal. 154a and 154 are all congruent triangles.
Further, an insertion piece portion 156 is formed on the upper side of the inner folding plate portion 153 connected to the side wall plate portion 116 at the side edge 120 via an upper folding line 157.

In the case where four or more even number of inner folding plates are formed between adjacent side wall plates as in the paper assembly box 110 according to the present embodiment, the inner folding plates The parts need to be divided by alternately arranged inner and outer bend lines so that they can be folded during assembly.

Next, an assembly process of the paper assembly box 110 will be described with reference to FIG. In FIG. 4, the assembly process is divided into three processes (a) to (c) for explanation, but this classification is for convenience of explanation. Detailed description of the same steps as those of the paper assembly box 10 according to the first embodiment shown in FIG. 2 will be omitted.
First, the raw paper is cut into a predetermined shape shown in FIG. 3 to form an outer bend line and an inner bend line (step (a) above). Next, side wall plate portions 116, 117 are bent along bottom crease lines 112, 113, 114, 115 forming the four sides of the bottom plate portion 111 and connected to the bottom plate portion 111 through these bottom crease lines 112-115. , 118, 119 are launched. At that time, the outer bend lines 136 and 137 provided on the side wall plate portions 118 and 119 are also bent together.

Next, a process of forming the inner folding plate portions 153, 153a, 154a, and 154 connecting the side wall plate portions 116 and 119 will be described. FIG. 4 shows a state where the paper assembly box 110 being assembled is viewed from the outside. It bends along the inner bend lines 155 and 155a and the outer bend line 161, and the adjacent inner folding plate portions 153, 153a, 154a and 154 overlap each other. Next, the inner folding plate portion 154 formed by bending the insertion piece portion 156 connected to the upper side of the inner folding plate portion 153 via the upper folding line 157 so as to overlap the inner folding plate portions 153, 153a, 154a; It is fitted between the side wall plate portions 119 adjacent to it (in the drawing, the back side of the inner folding plate portion 119) (step (b)).

The upper side of the four inner folding plate portions 148, 148a, 149a, 149 and the inner folding plate portion 148 divided by the inner bending lines 150, 150a and the outer bending line 160, which connect the side wall plate portions 117 and 119. Four inner folding plate portions 143 divided by inner bending lines 145, 145a and outer bending lines 159, which connect the insertion piece portion 151, the side wall plate portions 117 and 118 formed through the folding line 152, 143a, 144a, 144 and the inner folding lines 140, 140a and outer bending lines connecting the insertion piece 146 formed on the upper folding line 147 via the upper folding line 147 and the side wall plates 116 and 118 to the upper part. The four inner folding plate portions 138, 138a, 139a, 139 and the inner folding plate portion 138 divided by the line 158 are formed on the upper folding line 142 via the upper folding line 142. For even insertion piece 141, the same folding, to produce a paper assembly box 110 (or, step (c)).

Next, with reference to FIG.5 and FIG.6, the paper assembly box 210 which concerns on the 3rd Embodiment of this invention is demonstrated.
FIG. 5 shows a development view of the paper assembly box 210 according to the third embodiment of the present invention.
The square bottom plate portion 211 has four sides formed by arc-shaped bottom crease lines 212, 213, 214, and 215 that are bent outward. The square side wall plate portion 216 is connected to the bottom plate portion 211 via a bottom crease line 212 and has side sides 220 and 221 that are outer bending lines. Similarly, the side wall plate portions 217, 218, and 219 are connected to the bottom plate portion 211 via the bottom crease lines 213, 214, and 215, respectively, and the side sides 222 and 223, 224, 225, 226, and the outer bending lines, respectively. 227.

Between the adjacent side wall plate portions 216 and 218, in a developed state, the side wall plate portions 216 and 218 have a square shape with one side as the height of the side wall plate portions 216 and 218, and a straight line that is a diagonal line starting from the corner 233 of the bottom plate portion 211. The inner folding plate portions 238 and 239 which are two right-angled isosceles triangles divided by the inner bending line 240 are formed, and the side wall plate portions 216 and 218 are connected to each other.
Moreover, the insertion piece part 241 is formed in the upper part of the inner side folding board part 238 connected with the side wall board part 216 by the side 221 via the upper bending line 242, respectively.
Further, between the side wall plate portions 217 and 218 adjacent to each other, a square whose side is the height of the side wall plate portions 217 and 218 in the unfolded state is a diagonal line starting from the corner 235 of the bottom plate portion 211. Two inner folding plate portions 243 and 244 that are right-angled isosceles triangles divided by the inner bending line 245 are formed, and the side wall plate portions 217 and 218 are connected.

Similarly, between the adjacent side wall plate portions 217 and 219, a square whose side is the height of the side wall plate portions 217 and 219 in the unfolded state is a diagonal line starting from the corner 234 of the bottom plate portion 211. Inner folding plate portions 248 and 249 that are two right-angled isosceles triangles divided by an inner bending line 250 are formed, and the side wall plate portions 217 and 219 are connected.
Furthermore, between the adjacent side wall plate portions 216 and 219, a square having a side of the height of the side wall plate portions 216 and 219 in the unfolded state and a diagonal line starting from the corner 232 of the bottom plate portion 211. Inner folding plate portions 253 and 254 that are two right-angled isosceles triangles divided by the inner bending line 255 are formed, and the side wall plate portions 216 and 219 are connected.
Moreover, the insertion piece part 256 is formed in the upper part of the inner side folding board part 253 connected with the side wall board part 216 by the side 220, respectively via the upper bending line 257. As shown in FIG.

Next, an assembly process of the paper assembly box 210 will be described with reference to FIG. In FIG. 6, the assembly process is divided into four processes (a) to (d) for explanation, but this classification is for convenience of explanation.
First, the raw paper is cut into a predetermined shape shown in FIG. 5 to form an outer bend line and an inner bend line (step (a) above). Next, the side wall plate portions 216 and 217 are bent along the bottom crease lines 212, 213, 214, and 215 forming the four sides of the bottom plate portion 211, and are connected to the bottom plate portion 211 through the bottom crease lines 212 to 215. 218, 219.
In addition, by configuring the bottom plate portion in an arc shape that is bent outward as in the present embodiment, the bottom plate portion forms a bowl-like curved surface that protrudes upward in the assembled box, thereby improving design. Can be increased.

Next, along side edges (outer bend lines) 220, 221, 222, 223, 224, 225, 226, 227 and inner bend lines 240, 245, 250, 255 of the side wall plate portions 216, 217, 218, 219. And bending (step (b)).
Next, the inner folding plate portions 248 and 249 are bent inside the side wall plate portion 219 along the side edge 227 of the side wall plate portion 219 so that the inner folding plate portion 249 overlaps the side wall plate portion 219. Next, the inner folding plate portions 254 and 253 are bent inside the side wall plate portion 219 along the other side 226 of the side wall plate portion 219 so that the inner folding plate portion 254 overlaps the inner folding plate portion 248. To do. At this time, four inner folding plate portions 249, 248, 254, 253 overlap in this order on the side wall plate portion 219, and the inner folding plate portion 253 with the insertion piece portion 256 connected upward is Located on the innermost side.

Similarly, the inner folding plate portions 243 and 244 are bent along the side 225 of the side wall plate portion 218 so that the inner folding plate portion 244 overlaps the side wall plate portion 218. Next, the inner folding plate portions 239 and 238 are bent along the other side 224 of the side wall plate portion 218 so that the inner folding plate portion 239 overlaps the inner folding plate portion 243. At this time, four inner folding plate portions 244, 243, 239, and 238 are overlapped in this order on the side wall plate portion 218, and the inner folding plate portion 238 in which the insertion piece portion 241 is connected upward is It is located on the innermost side (the process (c)).

Finally, the insertion piece portion 256 is bent along the upper fold line 257 and fitted between the side wall plate portion 219 and the inner fold plate portion 249. Similarly, the insertion piece portion 241 is moved along the upper fold line 242. When folded and fitted between the side wall plate portion 218 and the inner folding plate portion 244, the paper assembly box 210 is manufactured (step (d) above).

The present invention is not limited to the above-described embodiment, and can be modified without changing the gist of the present invention. For example, some or all of the above-described embodiments and modifications are possible. The case where the paper assembly box of the present invention is configured by combining the above is also included in the scope of rights of the present invention.
For example, in the paper assembly box of the above-described embodiment, when used as a seedling pot, a hole for discharging excess moisture may be provided in the bottom plate portion. Further, a net or the like may be attached to the hole so that the culture soil does not flow out of the hole.
Moreover, in the said 3rd Embodiment, although the baseplate part and the side wall board part were square, a rectangle may be sufficient.

It is an expanded view of the paper-made assembly box which concerns on the 1st Embodiment of this invention. It is the schematic explaining the assembly process of the same paper assembly box. It is an expanded view of the paper assembly box which concerns on the 2nd Embodiment of this invention. It is the schematic explaining the assembly process of the same paper assembly box. It is an expanded view of the paper assembly box which concerns on the 3rd Embodiment of this invention. It is the schematic explaining the assembly process of the same paper assembly box.

Explanation of symbols

10, 110, 210: Paper assembly box, 11, 111, 211: Bottom plate part, 12, 13, 14, 15, 112, 113, 114, 115, 212, 213, 214, 215: Bottom crease line, 16, 17, 18, 19, 116, 117, 118, 119, 216, 217, 218, 219: side wall plate part, 20, 21, 22, 23, 24, 25, 26, 27, 120, 121, 122, 123, 124, 125, 126, 127, 220, 221, 222, 223, 224, 225, 226, 227: side, 28, 29, 30, 31: outer bend line, 32, 33, 34, 35, 132, 133 , 134, 135, 232, 233, 234, 235: angle, 36, 37, 136, 137: outer bend line, 38, 39, 43, 44, 48, 49, 53, 54, 138, 38a, 139, 139a, 143, 143a, 144, 144a, 148, 148a, 149, 149a, 153, 153a, 154, 154a, 238, 239, 243, 244, 248, 249, 253, 254: inner folding plate 40, 45, 50, 55, 140, 140a, 145, 145a, 150, 150a, 155, 155a, 240, 245, 250, 255: inner bending line, 41, 46, 51, 56, 141, 146, 151, 156, 241, 256: Insertion piece part, 42, 47, 52, 57, 142, 147, 152, 157, 242, 257: Upper fold line, 158, 159, 160, 161: Outer bend line

Claims (9)

A paper assembly box assembled by folding along a crease line formed in advance on a sheet of planar paper,
A rectangular bottom plate portion having four sides formed in a straight line or an arc shape;
Side wall plate portions connected to the four sides of the bottom plate portion via bottom crease lines,
The adjacent side wall plate portions are connected, and an even number of inner folding plate portions divided by one or a plurality of linear crease lines starting at the corners of the bottom plate portion, and
Further, the inner folding plate portion 1 connected to the side wall plate portion by a first outer bending line has an upper portion between the adjacent side wall plate portion and the folded inner folding plate portion. A paper assembly box, characterized in that an insertion piece part to be fitted into the upper part is provided via an upper folding line. 2. The paper assembly box according to claim 1, wherein the plurality of inner folding plate portions to be folded are congruent triangles. 3. The paper assembly box according to claim 1, wherein at least one opposed bottom crease line of the bottom plate portion has an arcuate shape that bends inward, and the bottom crease line is at a lower portion. A paper assembly box, characterized in that an arcuate second outer bend line is formed at the lower portion of the formed side wall plate portion and bent outwardly starting from a corner of the bottom plate portion. 4. The paper assembly box according to claim 1, wherein both bottom side end portions of the side wall plate portions are disposed on both inner sides of the one opposing side wall plate portion among the side wall plate portions. 5. And a third outer bend line starting from the top is formed, and the inner dimension of the side wall plate portion gradually increases toward the top. The paper assembly box according to any one of claims 1 to 3, wherein the number of the inner folding plate portions connecting the adjacent side wall plate portions is four, and the inner side of the side wall plate portion toward the upper side. A paper assembly box characterized in that the dimensions are gradually reduced. A paper assembly box assembled by folding along a crease line formed in advance on a sheet of planar paper,
A rectangular bottom plate having four sides formed in a straight line or an arc shape;
Side wall plate portions connected to the four sides of the bottom plate portion via bottom crease lines,
The adjacent side wall plate portions are connected via an outer bending line, and have two inner folding plate portions divided by a linear inner bending line that starts at a corner of the bottom plate portion,
A difference in which the inner folding plate portion connected to both sides of the opposing side wall plate portion is bent inside the side wall plate portion and is fitted between the bent inner folding plate portion and the side wall plate portion. A paper assembly box, wherein the insert piece portion is provided on an upper portion of the inner folding plate portion located on the innermost side via an upper folding line. The paper assembly box according to claim 6, wherein the two inner folding plate portions that connect the side wall plate portions adjacent to each other are squares whose sides are the height of the side wall plate portions in the unfolded state, An inward bending line is a diagonal line starting from a corner of the bottom plate portion. 8. The paper assembly box according to claim 7, wherein the side wall plate portion is square. The paper assembly box of any one of Claims 1-8 WHEREIN: The punching hole is formed in the said baseplate part, The paper assembly box characterized by the above-mentioned.

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