JP7187978B2 - packaging box - Google Patents

Description

The present invention relates to a packaging box for packaging articles.

Conventionally, there has been known a packaging box (so-called "A-type box") in which standing walls are provided on the four sides of a rectangular parallelepiped, a bottom wall is provided on the bottom, and the opening on the top is closed with a plurality of flaps. When closing the opening of the packaging box, a pair of outer flaps extending from the upper edges of the pair of standing wall portions and a pair of inner flaps extending from the respective upper edges of another pair of standing wall portions are folded. are superimposed.

Further, in some conventional packaging boxes, the inner flap and the outer flap are not separated from each other by a notch and are connected to each other (see, for example, Patent Document 1).

Patent No. 6127858

By the way, a packaging box is not only used as a transportation container, a packaging container, or a storage container in a state in which an article is housed in the box and the opening is closed. In some cases, it is used as a display box for displaying merchandise in the sales floor of a store.
For example, when the packaging box of Patent Document 1 is used as a display box, when the opening is opened, all four flaps provided at the opening on the top stand up in a state of being connected to each other, so that it is stored in the box. It is difficult to use the box as a display box because it is not easy to take out the articles stored in the box from the opening and the visibility is insufficient when the articles stored in the box are visually recognized from the opening.

The packaging box of the present disclosure was invented in view of the above problems, and one of the purposes is to easily improve the displayability. In addition to this purpose, it is also possible to achieve actions and effects that are derived from each configuration shown in the "Mode for Carrying out the Invention" described later and that cannot be obtained with conventional techniques. It can be positioned as another purpose.

The packaging box of the present disclosure has an opening surrounded on all sides by a first upper edge, a pair of second upper edges adjacent to both ends of the first upper edge, and a third upper edge opposite to the first upper edge. a bottomed cylindrical body box portion, a first flap extending from the first upper edge, a second flap extending from at least one of the pair of second upper edges, and the first a folding mechanism having a first fold line formed between the flap and the second flap and a second fold line formed in one of the first flap and the second flap; In a closed state, the cover is folded along the second folding line and folded along the first folding line, so that the first flap and the second flap are arranged so as to overlap each other.

Only the first flap and the second flap can be raised to the opening of the main body box part by the structure in which the second flap is connected only to the first flap, and the flap is not raised to the third upper edge. Therefore, it is possible to improve display properties such as ease of taking out articles and visibility.

It is a perspective view which shows the closed state of the packaging box regarding one Embodiment. It is a perspective view which shows the open state of the packaging box regarding one Embodiment. It is an expanded view of the packaging box regarding one Embodiment. It is a perspective view which shows the closed state of the packaging box regarding another embodiment. It is a perspective view which shows the open state of the packaging box regarding another embodiment. It is an expanded view of the packaging box regarding another embodiment.

Hereinafter, a packaging box as an embodiment will be described with reference to the drawings.
The packaging box of the present embodiment is a three-dimensional package assembled from flat sheet materials (also referred to as "blank sheets"). The sheet material assembled into the packaging box is a packaging material that has undergone processing such as cutting into a predetermined shape and adding ruled lines. Examples of packaging materials used for sheet materials include corrugated cardboard sheets and cardboard.

In this embodiment, the packaging box and the sheet material are assumed to be placed on a horizontal plane, and the directions used in the description are defined as follows.
Regarding the packaging box, the horizontal direction is the front-rear direction (the front is indicated by "F" and the rear is indicated by "B" in the figure) and the left-right direction (the left is indicated by "L" and the right is indicated in the figure). is indicated by "R"). Regarding the left and right direction, the left and right are defined based on the state facing from the front to the back. In the vertical direction, the direction in which gravity acts is downward (indicated by "D" in the figure), and the direction opposite to downward is upward (indicated by "U" in the figure). In addition, an opening for taking in and out articles is provided at the top of the packaging box.

The sheet material will be described using X and Y directions that are perpendicular to each other in the horizontal direction. Each of the X direction and the Y direction extends in two directions opposite to each other. Therefore, _one of the X directions is referred to as the _X1 direction, and the other is referred to as the X2 direction. Similarly, _one of the Y directions will be called the Y1 direction and the other will be called the _Y2 direction.

[I. one embodiment]
[1. Constitution]
[1-1. packaging box]
As shown in FIGS. 1 and 2, the packaging box 1 includes a main box portion 2 having an opening O at its top, and a lid portion 10 closing the opening O. As shown in FIGS. 1 shows a closed state in which the opening O of the packaging box 1 is closed by the lid portion 10, and FIG. 2 shows an open state in which the opening O of the packaging box 1 is opened with the lid portion 10 opened.

[Body box part]
The body box portion 2 has a cylindrical shape with a bottom. In the main body box portion 2, a pair of standing wall portions 4F, 4B arranged in the front and rear direction and a pair of standing wall portions 5L, 5R arranged in the left and right direction are folded up from the bottom wall portion 3 which is rectangular in plan view.
In the main body box portion 2 shown in FIGS. 1 and 2, the vertical lengths of the vertical wall portions 4F and 4B in the left-right direction are set longer than the lengths of the vertical wall portions 5L and 5R in the front-rear direction. That is, a bottom wall portion 3 is provided along the bottom surface of the rectangular parallelepiped, and vertical wall portions 4F, 4B, 5L, and 5R are provided along each side surface of the rectangular parallelepiped.
The opening O of the main body box portion 2 is surrounded on all sides by upper edges 4f, 4b, 5l and 5r of the standing wall portions 4F, 4B, 5L and 5R.

The standing wall portions 4F and 4B are subdivided into a front standing wall portion 4F and a rear standing wall portion 4B. The standing wall portions 5L and 5R are subdivided into a left standing wall portion 5L and a right standing wall portion 5R. Hereinafter, the front standing wall portion 4F is referred to as the "front wall portion 4F", the rear standing wall portion 4B as the "rear wall portion 4B", the left standing wall portion 5L as the "left wall portion 5L", and the right standing wall portion 5R as the "left wall portion 5L". The right wall portion 5R”.
Here, the front-rear symmetrical and left-right symmetrical main body box portion 2 is exemplified.

The bottom wall portion 3 shown in FIGS. 1 and 2 may have any configuration as long as it can close the bottom portion of the main body box portion 2 . For example, the bottom wall portion 3 includes a pair of lower edge outer flaps (not shown) extending from the lower edge of the rear wall portion 4B and the lower edge of the front wall portion 4F, and the lower edge of the left wall portion 5L. and a pair of lower edge inner flaps (not shown) extending from the lower edge of the right wall portion 5R.

[Lid]
A first outer flap 11B extends from an upper edge 4b of the rear wall portion 4B, and a second outer flap 11F extends from an upper edge 4f of the front wall portion 4F facing the upper edge 4b of the rear wall portion 4B. deferred.
A first inner flap 12L and a second inner flap 12R are respectively formed from the upper edge 5l of the left wall portion 5L and the upper edge 5r of the right wall portion 5R adjacent to the left and right ends of the upper edge 4b of the rear wall portion 4B. deferred.
The lid portion 10 is composed of the first outer flap 11B, the second outer flap 11F, the first inner flap 12L, and the second inner flap 12R.

In the packaging box 1 of this embodiment, the first outer flap 11B corresponds to the first flap extending from the first upper edge (upper edge 4b) of the main box portion 2, the first inner flap 12L, the second inner flap The flap 12R corresponds to a pair of second flaps extending from the second upper edges (upper edges 5l and 5r) adjacent to both ends of the first upper edge, and the second outer flap 11F corresponds to the first upper edge. corresponds to a third flap extending from the third upper edge (upper edge 4f) facing the .

As shown in FIG. 2, the grooves are not completely cut between the first outer flap 11B and the first inner flap 12L, but are continuously provided. Also, the grooves are not completely cut between the first outer flap 11B and the second inner flap 12R, but are continuously provided. On the other hand, the second outer flap 11F (indicated by a two-dot chain line in FIG. 2), the first inner flap 12L, and the second inner flap 12R are not connected but separated.
Therefore, in the open state shown in FIG. 2, the first outer flap 11B, the first inner flap 12L, and the second Only the two inner flaps 12R are designed to be raised integrally.

In the packaging box 1 of this embodiment, only one of the pair of outer flaps 11B and 11F (the first outer flap 11B) is connected to the pair of inner flaps 12L and 12R in this way, and the pair of outer flaps 11B , 11F (second outer flap 11F) is not connected to the pair of inner flaps 12L, 12R.

[Bending mechanism]
Since the first inner flap 12L and the second inner flap 12R are connected to the first outer flap 11B, when the lid portion 10 is closed, the first outer flap 11B is connected to the first inner flap 12L and the second inner flap 12L. Folding mechanisms 40L and 40R are provided as mechanisms for superimposing on 12R.
As shown in FIG. 2, the folding mechanisms 40L and 40R include first folding lines 41L and 41R respectively provided between the first outer flap 11B and the first inner flap 12L and the second inner flap 12R; It has second folding lines 42L and 42R formed in the inner flap 12L and the second inner flap 12R, respectively.

The first folding lines 41L, 41R are provided to facilitate folding between the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R. One first folding line 41L extends linearly along the boundary between the first outer flap 11B and the first inner flap 12L. The other first folding line 41R extends linearly along the boundary between the first outer flap 11B and the second inner flap 12R.

Between the first outer flap 11B and the first inner flap 12L shown in FIGS. 1 and 2 (the location of the first folding line 41L), and between the first outer flap 11B and the second inner flap 12R (the first folding A connecting portion 410 and a notch portion 411 are provided at each of the line 41R and the line 41R. The cut portion 411 is a portion where the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R are partially separated. It is formed by a notch extending downward from the tip edge between the second inner flap 12R. The connecting portion 410 is a portion that partially connects between the first outer flap 11B and the first inner flap 12R or between the first outer flap 11B and the second inner flap 12L. It extends from the end of 411 (the lower end in the open state) to the intersection of the upper edge 4b and the upper edges 5l and 5r.
In other words, the first bending line 41L and the first bending line 41R each have a connecting portion 410 and a notch portion 411 .

The second folding lines 42L and 42R are provided for folding the first inner flap 12L and the second inner flap 12R respectively via the second folding lines 42L and 42R.
One second folding line 42L is formed in the first inner flap 12L and extends forward from the intersection of the upper edge 4b and the upper edge 5l (the rear base end of the first inner flap 12L) and the leading edge of the first inner flap 12L. , obliquely with respect to the upper edge 5l (see FIG. 2). The other second bending line 42R is formed in the second inner flap 12R and extends forward from the intersection of the upper edge 4b and the upper edge 5r (the rear proximal end of the second inner flap 12R) and the leading edge of the second inner flap 12R. , obliquely with respect to the upper edge 5r (see FIG. 2).

In the first inner flap 12L and the second inner flap 12R, portions 13L and 13R (see FIG. 2 ) become overlapping portions that overlap the central portions 14L and 14R (see FIG. 2) when the first inner flap 12L and the second inner flap 12R are folded along the second folding lines 42L and 42R (see FIG. 2). ).

[Notch part]
Notch portions 43L and 43R are provided at substantially central portions in the front-rear direction on the tip edges of the first inner flap 12L and the second inner flap 12R. The cutouts 43L and 43R each have a first side 44 parallel to the upper edges 5l and 5r and a second side 45 perpendicular to the first side 44, and are L-shaped in a side view in the open state. formed in The tips of the second bending lines 42L and 42R are located at the intersections of the first side 44 and the second side 45. As shown in FIG. That is, the second bending lines 42L and 42R extend from the rear proximal end portion of the first inner flap 12L and the rear proximal end portion of the second inner flap 12R to the notch portions 43L and 43R, respectively.

[Slanted side]
Further, the front edge 46L of the first inner flap 12L is formed as an inclined side that is inclined upward rearward from the intersection of the upper edge 4f and the upper edge 5l when the opening shown in FIG. 2 is open. there is Similarly, the front edge 46R of the second inner flap 12R is also formed as an inclined side that is inclined upward rearward from the intersection of the upper edge 4f and the upper edge 5r.

[zipper structure]
Moreover, between the second outer flap 11F and the upper edge 4f, there is a zipper structure 50 having cuts 51 intermittently formed. The zipper structure 50 is a tear line for separating the second outer flap 11F from the front wall portion 4F. The zipper structure 50 shown in FIG. 1 has a plurality of cuts 51 formed at a constant pitch from the right end to the left end of the upper edge 4f.

[Printing Department]
A printing portion 60 is provided on the outer surface of the front wall portion 4F. On the printing unit 60, the name, pattern, etc. of the contents of the packaging box 1 are printed.

[1-2. Opening and closing the lid]
In the packaging box 1 configured as described above, when closing the opening O with the lid portion 10, the operator first folds the first inner flap 12L and the second inner flap 12R at the second folding lines 42L and 42R, respectively. , and overlap the overlapped portions 13L, 13R with the central portions 14L, 14R. Along with this, the operator folds the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R along the first folding lines 41L and 41R. As a result, the first outer flap 11B is folded toward the inner side of the main box portion 2 with respect to the rear wall portion 4B while overlapping the overlapping portions 13L and 13R of the first inner flap 12L and the second inner flap 12R. .
In this embodiment, the folding directions of the first folding lines 41L and 41R are set to mountain folds, and the folding directions of the second folding lines 42L and 42R are set to valley folds. That is, the bending directions of the first bending lines 41L and 41R and the bending directions of the second bending lines 42L and 42R are set to be opposite to each other.

The other second outer flap 11F is bent toward the inside of the main box portion 2 with respect to the front wall portion 4F, and overlapped with the first inner flap 12L and the second inner flap 12R. In this state, the tip edges 110 of the first outer flap 11B and the second outer flap 11F are butted against each other.

When sealing the opening of the packaging box 1, the operator straddles the first outer flap 11B and the second outer flap 11F and extends the adhesive tape 90 along the leading edge 110 (indicated by a two-dot chain line in FIG. 1). paste. The packaging box 1 is reliably sealed by sticking the adhesive tape 90 from the left wall portion 5L to the right wall portion 5R.

When opening the closed opening as described above, the operator first peels off the adhesive tape 90 and then raises the first outer flap 11B around the upper edge 4b of the rear wall portion 4B.
At this time, since the first inner flap 12L and the second inner flap 12R are connected to the first outer flap 11B, the first inner flap 12L and the second inner flap 12R are integrated with the first outer flap 11B. Specifically, the upper edge 5l of the left wall portion 5L and the upper edge 5r of the right wall portion 5R are raised. Along with this, the overlapping portions 13L, 13R and the central portions 14L, 14R that have been folded at the second folding lines 42L, 42R are unfolded on the same plane.

Thus, the first outer flap 11B rises upward from the upper edge 4b along the same plane as the rear wall portion 4B. Also, the first inner flap 12L and the second inner flap 12R stand up from the upper edge 5l and the upper edge 5r respectively along the same plane as the left wall portion 5L and the right wall portion 5R. As a result, the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R are wall portions extending upward from the upper edge 4b, upper edge 5l, and upper edge 5r of the opening O of the packaging box 1, respectively. function as

Also, the operator separates the second outer flap 11F from the upper edge 4f of the main box portion 2. As shown in FIG. Since the second outer flap 11F extends from the upper edge 4f of the main box portion 2 via the zipper structure 50, the operator can easily remove the second outer flap 11F from the main box portion 2 by hand. can be separated. FIG. 2 shows a state in which the second outer flap 11F is separated, and the second outer flap 11F is indicated by a chain double-dashed line.

[Sheet material]
Next, the sheet material 1S assembled into the packaging box 1 will be described with reference to FIG.
The sheet material 1S is a sheet of packaging material cut into a predetermined shape.
In the following description, a ruled line extending in the Y direction (for example, the direction along which the flutes extend when the sheet material 1S is made of corrugated cardboard) is referred to as a "crease", and a crease is referred to as a "crease". A ruled line extending in a direction orthogonal to the direction in which the columns extend in the case of a sheet is called a "score".

A front wall sheet piece 4F corresponding to the front wall portion 4F, a right wall sheet piece 5R corresponding to the right wall portion 5R, a rear wall sheet piece 4B corresponding to the rear wall portion 4B, and a A left wall sheet piece 5L corresponding to the left wall portion 5L is provided. The boundaries of the sheet pieces 4F, 5R, 4B and 5L are defined by a _first crease C1, a _second crease C2 and a _third crease C3, respectively. _A connecting sheet piece 9 is provided on the X1 direction side of the front wall sheet piece 4F via a _fourth crease C4.

_In the Y1 direction region of the sheet material 1S, flap sheet pieces 31F, 32R, 31B, and 32L as sheet pieces forming the bottom wall portion ₃ are arranged in the Y1 direction from the sheet pieces 4F, 5R, 4B, and 5L, respectively. It protrudes and is provided. The boundaries between the flap sheet pieces 31F, 32R, 31B, 32L and the sheet pieces 4F, 5R, 4B, 5L are the _fourth score S4, the _fifth score S5, the _sixth score S6, and the _seventh score S7. partitioned.

In the Y2 direction region of the sheet material 1S, a _second outer flap sheet piece 11F corresponding to the second outer flap 11F, a second inner flap sheet piece 12R corresponding to the second inner flap 12R, and a first outer flap 11B are provided. A first inner flap sheet piece 12L corresponding to the corresponding first outer flap sheet piece 11B and the first inner flap sheet 12L is provided so as to protrude in the Y2 direction from the sheet pieces 4F, 5R, 4B and 5L, _respectively .
A _first score S1 is provided at the boundary between the second inner flap sheet piece 12R and the right wall sheet piece 5R, and a _second score S2 is provided at the boundary between the first outer flap sheet piece 11B and the rear wall sheet piece 4B. is provided, and a _third score S3 is provided at the boundary between the first inner flap sheet piece 12L and the left wall sheet piece 5L.

The boundary between the second outer flap sheet piece 11F and the front wall sheet piece 4F is partitioned in the Y direction by the breaking portion 50 corresponding to the zipper structure 50 and the _eighth score S8. The breaking portion 50 is provided with a plurality of notches 51 intermittently formed along the boundary between the second outer flap sheet piece 11F and the front wall sheet piece 4F.

[First bending line]
The second inner flap sheet piece 12R and the first outer flap sheet piece 11B are continuously arranged in the X direction, and the boundary between the second inner flap sheet piece 12R and the first outer flap sheet piece 11B is the _fifth crease C5. It is divided in the X direction by the first bending line 41R having The first outer flap sheet piece 11B and the first inner flap sheet piece 12L are continuously arranged in the X direction, and the boundary between the first outer flap sheet piece 11B and the first inner flap sheet piece 12L is the sixth crease. It is bounded in the X direction by a first fold line _41L having C6.

The first bending lines 41R and 41L shown in FIG. 3 are partially formed as continuous portions 41 extending from the ends in the Y1 direction toward the _Y2 direction, and the _remaining portions (ends in the _Y2 direction) are grooves. It is formed as a notch portion 411 by cutting.

[Second bending line]
In addition, the second inner flap sheet piece 12R has a _second folding line L1 at a position that bisects the angle (90 degrees) formed by the _first folding line 41R and the first score S1. 42R is arranged. The first inner flap sheet piece 12L has a second folding line 42L having a _second ruled line L2 at a position that bisects the angle (90 degrees) formed by the first folding line 41L and the _third score S3. are placed.

[Notch part]
In addition, L-shaped notch portions 43L and 43R are formed in the X _- direction central portions of the Y2 direction edges of the first inner flap sheet piece 12L and the second inner flap sheet piece 12R. The cutouts 43L and 43R have a first side 44 parallel to the first score S ₁ and the third score S ₃ and a second side 45 perpendicular to the first side 44. The tips of the second folding lines 42L and 42R are positioned at the intersection of the sides 45. As shown in FIG.

[Slanted side]
An edge 46L in the X2 direction of the _first inner flap sheet piece 12L is formed as _an inclined _side extending in the _Y2 direction from the base end in the Y1 direction and inclined in the X1 direction. Similarly, the X1 _- direction edge 46R of the _second inner flap sheet piece 12R is also formed as an inclined side extending in the Y2 _- direction from the Y1 _- direction base end and inclined in the X2-direction.

[Effect]
As described above, the packaging box 1 of the present embodiment can be easily attached to an article by simply raising the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R. Available as a display box. Since only the first outer flap 11B is connected to the first inner flap 12L and the second inner flap 12R, the first outer flap 11B and the first inner flap 12L extending from the upper edge 4b, the upper edge 5r, and the upper edge 5l and the second inner flap 12R are raised, and the second outer flap 11F is not raised at the upper edge 4f. Therefore, it is possible to improve displayability when used as a display box. Of course, when the opening is fully closed, the packaging box 1 can be used as a transportation container, a packaging container or a storage container. In this specification, the term "displayability" includes the ease of taking out an article from an opening, the visibility of an article from an opening, and the efficiency of display work.

More specifically, when used as a display box, the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R are raised, so the height of the packaging box 1 is increased by the raised flaps. can be increased. In addition, since the second outer flap 11F is not raised continuously from the upper edge 4f of the four sides of the opening, it is possible to improve the ease of taking out the article and the visibility. In addition, since the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R support each other and maintain an upright state, it is not necessary to fasten the flaps with tape. Therefore, the efficiency of display work can be improved.

In addition, since the zipper structure 50 is provided between the second outer flap 11F and the upper edge 4f, the second outer flap 11F, which is unnecessary when used as a display box, can be removed without using a cutting tool such as scissors or a cutter. It can be easily separated from the main body box part 2 manually.

In addition, by providing the printing section 60 on the front wall portion 4F, which is the front of the display box, the printing section 60 is arranged at a location that is easy for users of the display box to see. Therefore, displayability can be further improved.

In addition, since the edges 46L and 46R of the first inner flap 12L and the second inner flap 12R are inclined upward toward the rear in the open state of the opening, when the packaging box 1 is used as a display box, The height of the left and right side walls of the display box can be gradually lowered from the rear to the front of the display box. Therefore, it is possible to further improve the ease of taking out the article and the visibility of the article.

In addition, the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R are partially connected only at the connecting portion 410, and are partially connected from the tip edge by the cut portion 411. By separating, the length of the connecting portion between the first outer flap 11B and the first inner flap 12L and the second inner flap 12R is shortened, and the bending process at the first bending lines 41L and 41R is performed. You can do it more easily.

Furthermore, notch portions 43L and 43R are provided at substantially central portions in the front-rear direction on the tip edges of the first inner flap 12L and the second inner flap 12R. , 43R, the length of the second bending lines 42L, 42R is shortened, and the folding process at the second bending lines 42L, 42R is further facilitated.

For example, when a conventionally known packaging box whose opening is closed by a pair of inner flaps and a pair of outer flaps (so-called "A type box") is used as a display box equivalent to the present embodiment, first, a pair of One of the outer flaps and a pair of inner flaps are raised, then these flaps are fixed to each other with adhesive tape, and then the other of the pair of outer flaps is cut off with a cutter, and further, each inner flap An operation of obliquely cutting off the front end corner is required. On the other hand, the packaging box 1 of the present embodiment can be easily used as the above-described display box by simply raising the first outer flap 11B, the first inner flap 12L, and the second inner flap 12R. Therefore, tape fastening work with adhesive tape and cutting work using a cutter are not required, and the efficiency of display work can be improved.

[Modification]
An embodiment of the present invention has been described above, but the present invention can be implemented by appropriately modifying the embodiment without departing from the scope of the invention.

4 to 6 are diagrams for explaining a packaging box 100 of another embodiment and a sheet material 100S for assembling this packaging box 100. FIG. Constituent elements that have already been described with reference to FIGS. 1 to 3 are denoted by common reference numerals, and description thereof will be omitted as appropriate.
In the packaging box 100, the length in the front-rear direction of the first outer flap 110B is set to be the same as the length in the front-rear direction of the main box portion. It differs from the packaging box 1 shown in FIGS. 1 to 3 in that it can be covered. Therefore, the packaging box 100 is not provided with a flap corresponding to the second outer flap 11F of the packaging box 1 . In this case, the height of the box when used as a display box can be increased by the length of the front-rear direction of the first outer flap 110B.

In this case, as shown in FIG. 5, a support surface 120L extending along the left-right edge of the first outer flap 110B is provided on the rear edge of each of the first inner flap 12L and the second inner flap 12R. , a support surface 120R. That is, as shown in _FIG . 6, in the sheet material 100S, a support surface 120L extending in the _Y2 direction and the X2 direction is formed at the edge in the X1 direction of the _first inner flap 12L. _A support surface 120R extending in the _Y2 direction and the X1 direction is formed on the edge in the X2 direction of the _second inner flap 12R.
The support surfaces 120L and 120R support the first outer flap 110B from below in the closed state (see FIG. 4), and support surfaces 120L and 120R extend along the erecting direction of the first outer flap 110B in the open state. , the upright state of the first outer flap 110B can be supported and reinforced by the support surfaces 120L and 120R (see FIG. 5).

〔others〕
In the above embodiment, the case where the front edges 46L and 46R of the first inner flap 12L and the second inner flap 12R are formed by inclined sides has been described as an example. The edges 46L, 46R of the second inner flap 12R may be straight lines extending in the vertical direction when the first inner flap 12L, the second inner flap 12R are raised.

Also, the notch portions 43L and 43R at the tip edges of the first inner flap 12L and the second inner flap 12R may not be provided. That is, the surface shape of the first inner flap 12L and the second inner flap 12R may be rectangular in plan view, similar to the inner flap of a so-called "A-type box".

In the above embodiment, the first outer flap 11B corresponds to the "first flap", the first inner flap 12L and the second inner flap 12R correspond to the "second flap", and the second outer flap The case where 11F corresponds to the "third flap", that is, the case where the first flap and the third flap are overlapped on the outside of the pair of second flaps with the lid part 10 closed has been described as an example. Alternatively, the lid portion 10 may be configured such that the pair of second flaps overlaps the outer sides of the first flap and the third flap.

Further, in the above embodiment, the case where the second folding lines 42L and 42R are formed in the first inner flap 12L and the second inner flap 12R has been described as an example, but the second folding lines 42L and 42R are , may be formed on the first outer flap 11B. In that case, in the first outer flap 11B, the portions defined by the first folding lines 41L, 41R and the second folding lines 42L, 42R form overlapped portions that partially overlap the first outer flap 11B.

The shape of the packaging box 1, 100 is not limited to a rectangular parallelepiped shape, and may be a cubic shape, a prismatic shape, or the like. That is, the packaging box 1,100 can have any proportion.

1,100 Packaging box 1S Sheet material 2 Main box part 3 Bottom wall part 4B Rear wall part, side wall sheet piece 4F Front wall part, side wall sheet piece 4f, 4b, 5l, 5r Upper edge 5L Left wall part, end wall sheet piece 5R Right wall portion, end wall sheet piece 9 Connecting sheet piece 10 Lid portion, lid portion sheet piece 11B First outer flap, first outer flap sheet piece 11F Second outer flap, second outer flap sheet piece 12L First inner flap , first inner flap sheet piece 12R second inner flap, second inner flap sheet pieces 13L, 13R overlapping portions 14L, 14R central portions 40L, 40R folding mechanisms 41L, 41R first folding lines 42L, 42R second folding line 43L, 43R Notch 44 First side 45 Second sides 46L, 46R Edge 50 Zipper structure, breaking part 51 Cut 60 Printed part 90 Adhesive tape 110 Leading edge 110B First outer flaps 120L, 120R Support surface 410 Connecting part 411 Cut Part O opening

Claims (3)

A bottomed tubular shape having an opening at the top surrounded on all four sides by a first upper edge, a pair of second upper edges adjacent to both ends of the first upper edge, and a third upper edge opposite to the first upper edge. a main body box,
A first flap extending from the first upper edge and having a shape covering the entire surface of the opening, and a pair of second flaps extending from the pair of second upper edges and connected to the first flap. a folding mechanism having two flaps, a first fold line formed between the first flap and the pair of second flaps , and a second fold line formed in the pair of second flaps ; In a closed state in which no flap extends from the third upper edge and the opening is closed, the opening is folded along the second folding line and folded along the first folding line, whereby the first a lid portion in which the flap and the second flap are arranged so as to overlap ,
Between the first flap and the second flap, a connecting portion that is partially connected by intermittently cutting between the first flap and the second flap; A notch is provided to partially separate one flap and the second flap,
A notch is formed in the tip edge of the second flap,
The second fold line extends from the intersection of the second upper edge and the first fold line to the notch.
A packaging box characterized by: The main body box portion includes a printing portion in which printing is applied to the outer surface of the standing wall portion having the third upper edge,
The packaging box according to claim 1, characterized by: In the state where the opening is open, the edge of the second flap facing the edge connected to the first flap is inclined upward from the third upper edge toward the first upper edge. The packaging box according to claim 1 or 2, characterized in that :

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