JP7352277B2 - Primary assembly of assembly box - Google Patents

Description

The present invention relates to a primary assembly of an assembly box, and particularly to a primary assembly of an assembly box that can be assembled into a box shape from a flat folded state.

Conventionally, there have been known assembly boxes (cosmetic boxes) that can be folded into a flat shape for transportation and storage, and that can be assembled as a whole when in use. Primary assembly products such as an assembly box with a picture frame and an assembly box with an 8-piece frame have been proposed.

The primary assembled product of the assembly box described in Patent Document 1 includes a rectangular bottom wall, a pair of first outer walls and a pair of second outer walls connected to the bottom wall, and a pair of first outer walls and a pair of second outer walls. a pair of first inner walls and a pair of second inner walls connected to the second outer wall of the base, and a pair of first inner walls and a pair of second inner walls connected to the bottom wall so as to abut on the bottom wall. A pair of first abutting pieces and a pair of second abutting pieces provided, and a connecting piece that connects the ends of the first outer wall and the second outer wall in the longitudinal direction. A state in which the first contact piece is adhered in contact with the bottom wall, and a portion of each connecting piece that is on the second outer wall side with respect to the diagonal fold is in contact with the second outer wall. It is glued with.
In addition, when the primary assembly is finally assembled, the first locking piece (locking flap) provided at the longitudinal end of the first inner wall and the longitudinal end of the second inner wall It is configured to be locked with a second locking piece provided at the portion.

Japanese Patent Application Publication No. 9-286429 Japanese Patent Application Publication No. 11-240532

However, there has been a need for a technology that can more easily assemble the primary assembly of an assembly box into a box shape, such as those disclosed in Patent Documents 1 and 2.
For example, when final assembling a primary assembly into a box, a pair of long side walls (a long picture frame) are first erected, but since the primary assembly is flat, it is difficult to erect the side walls. It was becoming relatively difficult.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a primary assembly of an assembly box that can be easily assembled into a box shape from a flat folded state.
Another object of the present invention is to provide a primary assembled product of an assembly box in which it is easy to erect a pair of side walls (elongated side walls) during final assembly of the primary assembled product.

The above problem can be solved by the primary assembly of the assembly box of the present invention, which includes a rectangular bottom wall, a pair of first outer walls and a pair of first outer walls connected to the four sides of the bottom wall via first folds, respectively. The two outer walls are connected to the extending ends of the pair of first outer walls through double folds having a predetermined width, and are bent at the double folds to form the first outer walls of the pair. a pair of first inner walls disposed to face the walls, each connected to an extending end of the pair of first inner walls via a second fold; A pair of first contact pieces bent at a second fold and provided to contact the bottom wall, respectively, and longitudinal ends of the first outer wall and the second outer wall are connected to each other. a plurality of connecting pieces that are provided, are folded in half in half at a diagonal crease that extends diagonally from the corner closest to the corner of the bottom wall, and are arranged so as to partially abut the second outer wall; and, the pair of first abutting pieces are bonded in contact with the bottom wall, and each of the connecting pieces is on the second outer wall side with respect to the diagonal fold. The portions are bonded in contact with the second outer wall, and each connecting piece has a cut line extending diagonally from the corner side of the bottom wall at or around the diagonal fold. is formed, and when a primary assembly is formed, the first outer wall and the first inner wall are arranged to be inclined to stand up against the bottom wall and to fall down inside the primary assembly. , the diagonal fold of the primary assembled product is folded in half as it is to complete the assembled box .
As mentioned above, in each connecting piece, a cut line extending diagonally from the corner side of the bottom wall is formed on the diagonal fold or around the diagonal fold, so that the primary material can be more easily assembled into a box shape. An assembled product can be realized.
Specifically, by forming the cut line on each connecting piece, each connecting piece becomes in a state where it is folded in half (a state where a part of the connecting piece stands up). Then, the first outer wall supported by each connecting piece is inclined so as to stand up with respect to the bottom wall. As a result, the work of standing up a pair of side walls (a pair of long side walls) becomes easy, and a primary assembly that can be more easily assembled into a box shape can be realized.
In addition, by forming the cut line, it is possible to efficiently disperse stress applied to the four corners of the bottom wall during final assembly. As a result, cracking of ruled lines and peeling of printing can be easily prevented.

At this time, the extending ends of the pair of second outer walls are connected to each other through double folds having a predetermined width, and when the double folds are bent, the second outer walls of the pair are connected to the extending ends of the second outer walls. a pair of second inner walls disposed to face the outer walls, each connected to an extending end of the pair of second inner walls via a second fold, and bent at the second fold; a pair of second abutting pieces provided so as to respectively abut on the bottom wall when assembled, the second outer wall, the second inner wall and the The second contact piece is inclined so as to stand up with respect to the bottom wall and is arranged so as to fall down on the outside of the primary assembly, and the first outer wall and the first inner wall are arranged with respect to the bottom wall. It is preferable that the first abutting piece is bonded with the first abutting piece being in contact with the bottom wall.
Further, the connecting piece has a shape that is line symmetrical about the diagonal fold as a center line, and a portion of the connecting piece that is closer to the second outer wall with respect to the diagonal fold is the second outer wall. It is preferable that the adhesive be bonded while in contact with the diagonal fold, and that a portion on the first outer wall side with respect to the diagonal fold be not bonded.

At this time, the cut line preferably extends in a solid line along the diagonal fold, and extends from the corner of the bottom wall beyond the midpoint of the diagonal fold.
Further, the cut line extends from the corner side of the bottom wall beyond the first abutting piece bonded to the bottom wall in the opposing direction in which the pair of first outer walls face each other. good.
With the above configuration, the first outer wall supported by each connecting piece is inclined to stand up more with respect to the bottom wall. As a result, the work of standing up a pair of side walls (a pair of long side walls) becomes easier. Furthermore, the stress applied to the four corners of the bottom wall during final assembly can be more efficiently dispersed, and cracking of ruled lines and peeling of printing can be more easily prevented. Furthermore, the gap formed between the respective outer walls after final assembly can be suppressed (can be made less noticeable).

At this time, the first outer wall and the first inner wall are arranged to be inclined so as to stand up with respect to the bottom wall, and the angle of inclination between the bottom wall and the first inner wall is set to θ. (°), it is preferable that 7°≦θ≦50°.
As mentioned above, by setting the inclination angle of the picture frame (long picture frame) composed of the first outer wall and the first inner wall, it is possible to prevent lot variations when manufacturing the primary assembled product of the assembly box. can be suppressed.

At this time, the extending ends of the pair of second outer walls are connected to each other through double folds having a predetermined width, and when the double folds are bent, the second outer walls of the pair are connected to the extending ends of the second outer walls. a pair of second inner walls disposed to face the outer walls, each connected to an extending end of the pair of second inner walls via a second fold, and bent at the second fold; a pair of second abutting pieces provided so as to abut on the bottom wall, respectively, when the second outer wall and the second inner wall are folded; Preferably, a fold is formed at the double fold to facilitate folding, and the second outer wall and the second inner wall are arranged to be inclined so as to stand up with respect to the bottom wall. .
Further, the double fold is formed on the boundary line with the second outer wall, and the outer fold line is provided with a predetermined width apart from the outer fold line, and the double fold line is formed on the boundary line with the second inner wall. The second outer wall and the double fold are formed by forming the fold by applying a predetermined pressure to the outer fold and the inner fold. The inclination angle formed by the double fold is preferably the same as or larger than the inclination angle formed by the double fold and the second inner wall.
The above configuration also facilitates the work of setting up the picture frame (short picture frame) composed of the second outer wall and the second inner wall.

At this time, it is preferable that a second cut line extending in a broken line shape along the second fold line is formed in the second fold line between the second inner wall and the second contact piece. .
The above configuration facilitates the work of bringing the second contact piece into contact with the bottom wall and locking it after the picture frame (short picture frame) composed of the second outer wall and the second inner wall is set up. . That is, by forming the second cut line, it becomes easier to bring the second contact piece and the bottom wall together.

At this time, it is preferable that a crease is formed in the double fold between the first outer wall and the first inner wall to facilitate folding at the double fold.
With the above configuration, it becomes easy to set up the picture frame (elongated picture frame) composed of the first outer wall and the first inner wall. Moreover, since the folds are formed in advance, the frame can be raised with high precision.

According to the present invention, it is possible to realize a primary assembly of an assembly box that can be more easily assembled into a box shape from a flat folded state.
Further, when the primary assembly is finally assembled, it becomes easier to erect a pair of side walls (elongated side walls).

FIG. 3 is a plan view of a box-forming sheet. FIG. 3 is a plan view of the primary assembly. FIG. 3 is an enlarged view of the main part of FIG. 2 and shows a cut line formed in a connecting piece. It is a figure which shows 2nd Embodiment of a cut line. It is a figure which shows 3rd Embodiment of a cut line. FIG. 3 is a perspective view of the primary assembly. FIG. 3 is a perspective view of the final assembled box. FIG. 5 is a sectional view taken along line VI-VI in FIG. 4, showing a state in which a long side wall constituted by a first outer wall and a first inner wall is slightly raised. FIG. 5 is a sectional view taken along line VII-VII of FIG. 4, showing a state in which a short side wall formed by a second outer wall and a second inner wall is slightly raised. It is a diagram explaining the procedure for completing the assembled box (first step). It is a diagram explaining the procedure for completing the assembled box (second step). It is a diagram explaining the procedure for completing the assembly box (third step).

Embodiments of the present invention will be described below with reference to FIGS. 1 to 8.
This embodiment includes a rectangular bottom wall, a pair of first outer walls and a pair of second outer walls connected to the four sides of the bottom wall via first folds, and an extension of the pair of first outer walls. a pair of first inner walls connected to the ends via a double fold having a predetermined width, bent at the double fold and arranged to respectively face the pair of first outer walls; A pair of first contact pieces connected to the extending ends of the pair of first inner walls via a second fold, bent at the first fold and the second fold, and provided so as to contact the bottom wall. and a diagonal crease extending diagonally from the nearest corner of the bottom wall to connect the longitudinal ends of the first outer wall and the second outer wall. a plurality of connecting pieces that are folded and arranged so as to partially contact the second outer wall; the pair of first contact pieces are bonded while being in contact with the bottom wall; Of each connecting piece, the part on the second outer wall side with respect to the diagonal fold is glued in contact with the second outer wall, and the diagonal fold of each connecting piece has a corner of the bottom wall. The present invention relates to a primary assembled product of an assembly box, characterized in that a cut line is formed extending diagonally from the section.

As shown in FIGS. 2 to 4, the primary assembly 1 of the present embodiment is a primary assembly of a rectangular parallelepiped-shaped assembly box B, which is formed by punching out a single blank sheet as shown in FIG. It is formed by primarily assembling sheets S.
The primary assembly 1 can be transported or stored by being folded into a substantially flat shape, and the user can complete the assembly box B shown in FIG. 5 by final assembly when used in a physical store or the like. .
The assembly box B is an assembled paper box with a six-piece frame and used as a presentation box for storing gifts such as sweets and fruits, for example.

As shown in FIGS. 1 to 4, the primary assembly 1 includes a rectangular bottom wall 10 and a pair of ends connected to each other via first folds 11 on two sides of the bottom wall 10 in the short direction. are connected to the extending ends of the pair of first outer walls 20 via double folds 30 having a predetermined width, and are bent at the double folds 30 to form a pair of first outer walls 20. A pair of first inner walls 40 respectively facing the first outer wall 20 are connected to the extending ends of the pair of first inner walls 40 via second folds 41, and the first folds 11 and A pair of first abutting pieces 50 are provided which are bent at the second fold line 41 and abut on the bottom wall 10, respectively.
At this time, the pair of first abutting pieces 50 are bonded over substantially the entire length of the bottom wall 10 while abutting both ends of the bottom wall 10 in the short direction.
Note that by bending the first outer wall 20, the double fold line 30, and the first inner wall 40, a long side wall (long picture frame) of the assembly box B is configured.
The first fold line 11, the double fold line 30, and the second fold line 41 are fold portions that are provided in advance to form a long frame of the assembly box B.

The primary assembly 1 also includes a pair of second outer walls 60 connected to two sides of the bottom wall 10 at both ends in the longitudinal direction via the first fold line 11, and a pair of second outer walls 60. are respectively connected to the extending ends of the second outer walls 60 through double folds 30 having a predetermined width, and are arranged so as to face the pair of second outer walls 60 when folded at the double folds 30. The pair of second inner walls 70 are connected to the extending ends of the pair of second inner walls 70 via the second fold line 71, and are bent at the first fold line 11 and the second fold line 71. A pair of second contact pieces 80 are provided so as to contact the bottom wall 10, respectively.
Note that by bending the second outer wall 60, the double fold line 30, and the second inner wall 70, a short side wall (a short picture frame) of the assembly box B is configured.
The first fold line 11, the double fold line 30, and the second fold line 71 are fold portions that are provided in advance to form a short frame of the assembly box B.

Furthermore, the primary assembly 1 is provided so as to connect the longitudinal ends of the first outer wall 20 and the second outer wall 60, and starts from the nearest corner of the bottom wall 10. It is provided with a plurality of connecting pieces 90 which are folded in half at diagonally extending diagonal folds 91 and are partially in contact with the second outer wall 60.
At this time, the portion of each connecting piece 90 that is on the second outer wall 60 side with respect to the diagonal fold line 91 is bonded to the second outer wall 60 while being in contact with the longitudinal end of the second outer wall 60. .
Note that the connecting piece 90 connects the long picture frame and the short picture frame when the assembly box B is assembled.
The diagonal fold line 91 is a fold line provided in advance to fold the connecting piece 90 in half when the assembly box B is assembled.

As shown in FIGS. 2 and 3A, the connecting piece 90 has a diagonal fold 91 that starts from the nearest corner of the plurality of corners of the bottom wall 10 and extends diagonally away from the corner. and a cut line 92 extending linearly along the diagonal fold line 91.
The diagonal fold line 91 extends along the diagonal line of the connecting piece 90 from the end closest to the bottom wall 10 to the end farthest from the bottom wall 10.
Note that a cutout portion 93 cut out toward the bottom wall 10 is formed at the end of the connection piece 90 that is farthest from the corner of the bottom wall 10 .

The cut line 92 extends in a solid line along the diagonal fold line 91, and extends beyond the midpoint of the diagonal fold line 91 from the corner of the bottom wall 10 as a starting point. In other words, the length of the cut line 92 is approximately 2/3 of the total length of the diagonal fold line 91.
In addition, the cut line 92 is a first abutment bonded to the bottom wall 10 starting from a corner of the bottom wall 10 in the short direction of the bottom wall 10 (in the opposing direction in which the pair of first outer walls 20 face each other). Extending beyond piece 50.
Moreover, the cut line 92 starts from the corner of the bottom wall 10 in the short direction of the bottom wall 10, and the cut line 92 starts from the corner of the bottom wall 10 in the short direction of the bottom wall 10. Extending beyond the side edges.

In the above configuration, as shown in FIGS. 4 and 6, the first outer wall 20 and the first inner wall 40 are arranged at an angle so as to rise slightly with respect to the bottom wall 10.
Specifically, when the inclination angle between the bottom wall 10 and the first inner wall 40 (elongated side wall) is set to θ1 (°), 7°≦θ1≦50°, preferably 10°≦θ1≦ 40°, more preferably 15°≦θ1≦30°, even more preferably 20°≦θ1≦30°, ideally θ1=25°.
Therefore, when assembling the assembly box B, it becomes easy to stand up the elongated side wall (elongated picture frame) constituted by the first outer wall 20, the double fold 30, and the first inner wall 40.
Further, it is possible to suppress lot variations in manufacturing the primary assembly 1.

In order to set the inclination angle θ, the shape and arrangement of the connecting piece 90 (the cut line 92 and the notch part 93), and the initial stage during the manufacture of the primary assembly 1 are important, although it varies depending on the paper material. The pressure can be adjusted by applying pressure to press the first outer wall 20 (first inner wall 40) toward the bottom wall 10.
Specifically, when applying a predetermined pressure to press the first outer wall 20 (first inner wall 40) toward the bottom wall 10, a known compression belt (crimping belt) is usually used to press the first outer wall 20 (first inner wall 40) toward the bottom wall 10. Pressure will be applied over the entire 20 surfaces. On the other hand, in the primary assembly 1 of this embodiment, pressure is applied to a partial surface of the first outer wall 20. Specifically, pressure is applied to the surface of the first outer wall 20 that corresponds to (opposes) the first contact piece 50.
By doing so, in the primary assembly 1, the first outer wall 20 and the first inner wall 40 are inclined so as to rise slightly with respect to the bottom wall 10, compared to the conventional one.

Further, in the above configuration, as shown in FIGS. 4 and 7, the double fold 30 between the second outer wall 60 and the second inner wall 70 has a folding line to facilitate folding at the double fold 30. 31 is formed. The second outer wall 60 and the second inner wall 70 are arranged so as to be inclined slightly upright with respect to the bottom wall 10.
To be more specific, the double fold 30 has an outer fold 30 a formed on the boundary line with the second outer wall 60 and a predetermined width between the outer fold line 30 a and the outer fold line 30 a formed on the boundary line with the second inner wall 70 . It has an inner fold line 30b formed on a line, and an intermediate wall 30c provided between the outer fold line 30a and the inner fold line 30b.
Then, by applying a predetermined pressure to form the folds 31 on the outer fold line 30a and the inner fold line 30b, the inclination angle θ2 (°) between the second outer wall 60 and the double fold line 30 becomes two. The inclination angle θ3 (°) between the double fold line 30 and the second inner wall 70 is the same as or larger than the inclination angle θ3.
More specifically, 145°≦θ2≦175° and 140°≦θ3≦170°, preferably 150°≦θ2≦170° and 145°≦θ3≦165°, more preferably 160°≦θ2≦170° and 155°≦θ3≦165°, ideally θ2=165° and θ3=160°.
Therefore, when assembling the assembly box B, the work of standing up the short side wall (short picture frame) constituted by the second outer wall 60, the double fold 30, and the second inner wall 70 is also facilitated.

Further, in the above configuration, as shown in FIG. Two cut lines 72 are formed.
Specifically, the second cut lines 72 are formed at predetermined intervals (for example, about 5 mm intervals), and the length of each second cut line is set to be about 10 mm. .
By forming the above-mentioned cut line 72, when assembling the assembly box B, after standing up the short side wall (short picture frame) composed of the second outer wall 60 and the second inner wall 70, the second The work of bringing the contact piece 80 into contact with the bottom wall 10 and locking it becomes easier.
Note that a configuration in which folds are provided in advance instead of forming the cut line 72 can be considered, but providing the cut line 72 in the manufacture of the primary assembly 1 does not require complicated manufacturing equipment and reduces manufacturing costs. can be suppressed.

Further, in the above configuration, as shown in FIG. A fold 31 is formed to make it easier.
Therefore, it becomes easier to stand up the elongated side wall (elongated picture frame) composed of the first outer wall 20, the double fold 30, and the first inner wall 40. Since the folds 31 are formed in advance, the picture frame can be raised with high accuracy.

Next, the procedure for completing the assembled box B from the primary assembled product 1 will be explained based on FIGS. 8A to 8C.
First, as a first step, as shown in FIG. Grasp each part of the box with your fingers and lift it up from the inside of the box to the outside.
At this time, as shown in FIG. 6, the first outer wall 20 and the first inner wall 40 are arranged at an angle so as to rise slightly with respect to the bottom wall 10, so that they can be easily grasped with fingers. There is.

As a second step, as shown in FIG. 8B, after a pair of long side walls are erected, a pair of short side walls made up of a pair of second outer walls 60 and a pair of second inner walls 70 are formed. Grasp each side wall part (short picture frame part) with your fingers and work your way up from the outside of the box to the inside.
At this time, as shown in FIG. 7, since the second outer wall 60 and the second inner wall 70 are arranged so as to rise slightly with respect to the bottom wall 10, the fingers can easily reach the short side wall portions. It has an easy-to-grip structure.

Finally, as a third step, as shown in FIG. 8C, after standing up a pair of short side wall parts, a pair of second contact pieces 80 provided on the pair of short side wall parts are attached to the bottom wall 10. Do the work of pressing against it with your thumb.
At this time, as shown in FIG. 2, a second cut line 72 is formed in the second fold line 71 between the second inner wall 70 and the second abutting piece 80, so that the second abutting piece The work of bringing the 80 into contact with the bottom wall 10 and locking it becomes easier. That is, it becomes easier to match the surface of the second contact piece 80 and the surface of the bottom wall 10.

By the above three steps, the assembled box B can be easily completed from the primary assembled product 1.
Note that if the user is familiar with the assembly work, it is possible to omit the first step and complete the assembly box B by performing the second and third steps.
In the primary assembly 1 of this embodiment, when the "pair of short side wall parts" are raised in the second step, the "pair of long side wall parts" are also raised at the same time. This is because it has become.
That is, "a pair of elongated side wall portions" constituted by the first outer wall 20 and the first inner wall 40 are inclined so as to rise slightly with respect to the bottom wall 10, and the bottom wall 10 and the first This is because the inclination angle θ1 (°) formed by the inner wall 40 is set in advance.

As shown in FIG. 2, when the primary assembly 1 is finally assembled by the above method, the locking flap part 40a provided at the longitudinal end of the first inner wall 40 and the second inner wall The locking piece 70a provided at the end of the lengthwise direction of the locking piece 70 is locked.
Therefore, not only is the final assembly operation easy, but also the stability of the assembly box B after assembly can be ensured.

<Other embodiments>
In the above embodiment, as shown in FIG. 2, the primary assembly 1 is for assembling an assembly box B with a frame with 6 points attached, but is not particularly limited, and can be an assembly box with a frame with 8 points attached. It may also be something that assembles B.
Moreover, although the assembly box B is used as a body box or a lid box, it may be used as an integrated box in which the body box and the lid box are integrated. Alternatively, it may be used as a tiered box in which the body box or lid box is provided with tiers.
Further, although the assembly box B is a paper box, it is not particularly limited and may be a cardboard box or the like other than a paper box. In addition, when the assembly box is made of corrugated cardboard, it is preferable that the type of cardboard includes G-tier, F-tier, or E-tier, as well as relatively thin cardboard.

In the above embodiment, the assembly box B assembled by the primary assembly 1 is a paper box, but is not particularly limited and may be a cardboard box or the like other than a paper box.
In addition, when the primary assembly 1 is a corrugated cardboard material, it is preferable that the type of cardboard is G-tier, F-tier, or E-tier.

In the embodiment described above, as shown in FIG. 3A, the cut line 92 extends in a solid line along the diagonal fold line 91, and starts from the corner of the bottom wall 10 and extends beyond the midpoint of the diagonal fold line 91. Although it is extended, it is not particularly limited and can be changed.
For example, as shown in FIG. 3B, the cut line 192 may start from the corner of the bottom wall 10 and extend so as not to exceed the midpoint of the diagonal fold line 191. That is, the length of the cut line 192 may be approximately 10 mm.
Furthermore, for example, as shown in FIG. 3C, the cut line 92 may be formed around the diagonal fold line 91. The cut line 92 is a substantially arcuate solid line, and is formed at the center of the connecting piece 90. To be more specific, the cut line 92 is formed in the central portion of the connecting piece 90 so as to bulge toward the first outer wall 20 with respect to the diagonal fold 91.
In addition, a plurality of cut lines 92 may be formed along the diagonal fold line 91 at predetermined intervals, or a plurality of cut lines 92 may be formed in the peripheral portion of the diagonal fold line 91.

In the above embodiment, the primary assembly of the assembly box according to the present invention has been mainly described.
However, the embodiments described above are merely examples for facilitating understanding of the present invention, and do not limit the present invention. The present invention may be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof.

B Assembled box S Box forming sheet 1 Primary assembled product (primary assembled product of assembled box)
10 Bottom wall 11 First fold 20 First outer wall 30 Double fold 30a Outer fold 30b Inner fold 30c Intermediate wall 31 Fold 40 First inner wall 40a Locking flap portion 41 Second fold 50 First contact piece 60 2 outer wall 70 2nd inner wall 70a Locking piece 71 2nd fold 72 2nd cut line 80 2nd contact piece 90, 190, 290 Connection piece 91, 191, 291 Diagonal crease 92, 192, 292 Cut line 93 Notch θ1 Inclination angle θ2 Inclination angle θ3 Inclination angle

Claims (8)

a rectangular bottom wall,
a pair of first outer walls and a pair of second outer walls respectively connected to the four sides of the bottom wall via first folds;
The extending ends of the pair of first outer walls are each connected to each other via a double fold having a predetermined width, and are bent at the double fold to face the pair of first outer walls, respectively. a pair of first inner walls arranged as follows;
A pair that is connected to the extending ends of the pair of first inner walls via a second fold, and is bent at the first fold and the second fold to abut the bottom wall, respectively. a first contact piece;
A diagonal crease is provided to connect the ends of the first outer wall and the second outer wall in the longitudinal direction, and extends diagonally from the nearest corner of the bottom wall to the inside. a plurality of connecting pieces that are folded in half and arranged so as to partially abut the second outer wall;
The pair of first abutting pieces are bonded in contact with the bottom wall, and the portion of each of the connecting pieces that is on the second outer wall side with respect to the diagonal fold is attached to the second outer wall. It is glued in contact with the outside wall,
A cut line extending diagonally from the corner side of the bottom wall is formed at or around the diagonal fold in each of the connecting pieces ,
When assembled as a primary assembly, the first outer wall and the first inner wall are arranged to be inclined to stand up against the bottom wall and to fall down inside the primary assembly;
A primary assembled product of an assembled box, characterized in that the assembled box is completed by folding the diagonal fold of the primary assembled product in half as it is inward . The extending ends of the pair of second outer walls are each connected to each other through a double fold having a predetermined width, and when bent at the double fold, the pair of second outer walls a pair of second inner walls arranged to face each other;
A pair of second inner walls are connected to the extending ends of the pair of second inner walls via second folds, and are provided so as to respectively abut on the bottom wall when the second inner walls are bent at the second folds. further comprising: 2 abutting pieces;
At the time of the primary assembly,
The second outer wall, the second inner wall, and the second abutting piece are arranged so as to be inclined so as to stand up with respect to the bottom wall, and to fall to the outside of the primary assembly,
The first outer wall and the first inner wall are arranged so as to be inclined to stand up with respect to the bottom wall and fall down inside the primary assembly, and the first abutting piece is in contact with the bottom wall. 2. The primary assembly of an assembly box according to claim 1 , wherein the assembly box is bonded in contact with each other . The connecting piece has a shape that is line symmetrical about the diagonal fold as a center line,
A portion of the connecting piece that is closer to the second outer wall with respect to the diagonal fold is bonded in contact with the second outer wall, and a portion of the connecting piece that is closer to the first outer wall with respect to the diagonal fold is bonded to the second outer wall. A primary assembly of an assembly box according to claim 1 or 2, characterized in that the parts are not glued together . The cut line extends in a solid line along the diagonal fold, and extends from the corner side of the bottom wall beyond the midpoint of the diagonal fold ,
The cut line extends from the corner side of the bottom wall beyond the first abutment piece bonded to the bottom wall in opposing directions in which the pair of first outer walls face each other. A primary assembled product of an assembly box according to any one of claims 1 to 3 . Any one of claims 1 to 4, characterized in that when the inclination angle between the bottom wall and the first inner wall is set to θ (°), 7°≦θ≦50°. Primary assembly of the assembly box described in . The extending ends of the pair of second outer walls are each connected to each other through a double fold having a predetermined width, and when bent at the double fold, the pair of second outer walls a pair of second inner walls arranged to face each other;
A pair of second inner walls are connected to the extending ends of the pair of second inner walls via second folds, and are provided so as to respectively abut on the bottom wall when the second inner walls are bent at the second folds. further comprising: 2 abutting pieces;
A crease is formed in the double fold between the second outer wall and the second inner wall to facilitate folding at the double fold,
The assembly box according to any one of claims 1 to 5 , wherein the second outer wall and the second inner wall are arranged at an angle so as to stand up with respect to the bottom wall. Primary assembly. The double fold includes an outer fold formed on the boundary line with the second outer wall, and a predetermined width spaced from the outer fold line, and formed on the boundary line with the second inner wall. has an inner crease;
The fold is formed by applying a predetermined pressure to the outer fold and the inner fold, so that the inclination angle between the second outer wall and the double fold increases, 7. The primary assembly of an assembly box according to claim 6 , wherein the inclination angle with the second inner wall is the same as or larger than the inclination angle. A second cut line extending in a broken line shape along the second fold is formed in the second fold between the second inner wall and the second abutting piece ,
According to claim 6 or 7 , the double fold between the first outer wall and the first inner wall is formed with a crease to facilitate folding at the double fold. Primary assembly of the assembly box described.

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