JP7391759B2 - packaging box - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Sold to Hakuhodo Products Co., Ltd. on October 31, 2020 Sold to Hakuhodo Products Co., Ltd. on December 20, 2020 Sold to Hakuhodo Products Co., Ltd. on April 10, 2020 Sold to Hakuhodo Products Sold to Hakuhodo Products Co., Ltd. on April 20, 2020

The present invention relates to packaging boxes.

A basket-shaped carrier for storing and transporting a plurality of articles is known (Patent Document 1). The basket-shaped carrier has first and second end panels facing each other, first and second side panels facing each other connected to the first and second end panels, and connected to the end panel and the side panel. It was equipped with an automatic bottom. The basket-shaped carrier also includes a second handle panel connected to the first end panel, a third handle panel connected to the second end panel, and a first handle panel connected to the second handle panel. It was equipped with The first handle panel was adhered to the second handle panel and the third handle panel was adhered to the first handle panel to form a three-layer central handle.

Patent No. 3708555

In the basket-shaped carrier described above, the first to third handle panels are overlapped and bonded, so that sufficient strength as a carrier is ensured. However, the above-mentioned basket-shaped carrier has a problem in that the first to third handle panels must be stacked and glued in a predetermined order, which requires a lot of effort and time to assemble. If the first to third handle panels are not glued together, the effort and time required for assembly can be reduced, but the strength necessary for the carrier cannot be secured, leading to problems such as the carrier becoming easily deformed. was there.

In order to solve the above problems, the present invention provides a packaging box that can be easily assembled while maintaining necessary strength.

The present invention provides a packaging box having a bottom and an opening on the top surface, the packaging box having a rear wall, a front wall disposed opposite to each other with a space below the rear wall, and a rear wall and the front wall. an intermediate wall that is disposed opposite to the upper side of the rear wall and forms a storage space between the front wall and the front wall for accommodating the packaged items; and a left-right direction between the rear wall, the front wall, and the intermediate wall. a first side wall connecting one end of the rear wall and the front wall, a second side wall connecting the other end of the rear wall and the front wall in the left-right direction, and a front end of the second side wall and the other end of the intermediate wall in the left-right direction. A connecting wall that connects and overlaps the inner surface of the second side wall, and a connecting wall that is connected to the upper end of the second side wall, or is formed by cutting a part of the second side wall, and is folded inward and A reinforcing piece is provided, which is secured to at least one of the front wall, the intermediate wall, and the second side wall while being covered by at least a portion of the connecting wall.

In this case, the storage device may further include a partition wall that is installed between the front wall and the intermediate wall and forms the plurality of accommodation spaces.

In this case, the intermediate wall may form a second accommodation space between the intermediate wall and the rear wall.

In this case, a front gripping wall extending upward from the upper end of the intermediate wall and having a front gripping hole, and a front gripping wall connected to the upper end of the front gripping wall and having a rear gripping hole, and a boundary with the front gripping wall. a rear gripping wall that is folded back so that the rear gripping hole overlaps the back surface of the front gripping wall so as to face the front gripping hole, and whose tip side is disposed in the second accommodation space; The storage device may further include a lid portion that is connected to the upper end and closes the upper opening of the second storage space while pressing the front end side of the back grip wall disposed in the second storage space.

According to the present invention, a packaging box can be easily assembled while maintaining the strength required for the packaging box.

FIG. 1 is a perspective view showing a packaging box according to an embodiment of the present invention. FIG. 2 is a plan view showing a packaging box blank according to an embodiment of the present invention. FIG. 1 is a perspective view showing a packaging box according to an embodiment of the present invention in a folded state. It is a perspective view showing the process of assembling a packaging box concerning one embodiment of the present invention. FIG. 1 is a perspective view of a packaging box according to an embodiment of the present invention, showing a state in which reinforcing pieces are folded back inside. It is a perspective view showing the back of a packaging box concerning one embodiment of the present invention. 1 is a side sectional view showing a part of a packaging box according to an embodiment of the present invention. It is a perspective view showing the packaging box concerning the modification of one embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that Fr, Rr, L, R, U, and D shown in the drawings indicate front, rear, left, right, top, and bottom. The front-rear direction is perpendicular to the left-right direction, and the up-down direction is perpendicular to the front-rear direction and the left-right direction. Although terms indicating directions and positions are used in this specification, these terms are used for convenience of explanation and do not limit the technical scope of the present invention. Further, terms indicating directions and positions are based on directions and positions when the packaging box is assembled and used.

A packaging box 1 according to one embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a packaging box 1. FIG. FIG. 2 is a plan view showing the blank 5 of the packaging box 1.

As shown in FIG. 1, the packaging box 1 is a basket-shaped container having a bottom portion 23 (see FIG. 2) and an opening on the top surface. The packaging box 1 has, for example, a storage space S1 that accommodates three beverage cans M (an example of an object to be packaged), and includes a grip part 21 that is gripped by a user during transportation. Note that the object to be packaged accommodated in the packaging box 1 is not limited to the beverage can M, but may be a bottle, a plastic bottle, or any other object as long as it can be accommodated in the accommodation space S1.

The packaging box 1 is formed by assembling blanks 5 shown in FIG. The blank 5 is formed, for example, from a double-sided corrugated cardboard sheet made of paper, in which a front liner 9B and a back liner 9C (see FIG. 3) are attached to the front and back sides of a corrugated medium 9A. The blank 5 is formed, for example, by punching out a single corrugated sheet with a cutting die or the like. Note that FIG. 2 shows the front liner 9B side. In this specification, a direction parallel to the corrugated cardboard core 9A will be referred to as a "corrugated direction," and a direction perpendicular to the corrugated direction (corrugated core 9A) will be referred to as a "flow direction." "X" shown in the drawings indicates the "stage direction" and "Y" indicates the "flow direction."

[blank]
As shown in FIG. 2, the blank 5 includes a back wall 10, a first side wall 11, a front wall 12, a second side wall 13, an intermediate wall 14, a connecting wall 15, and two partition walls 16. It includes a reinforcing piece 20, a grip part 21, a lid part 22, and a bottom part 23.

The back wall 10, the first side wall 11, the front wall 12, and the second side wall 13 are arranged in this order in parallel from one side toward the other in the step direction, and are connected to each other via the first folding line L1.

<Back wall, first side wall>
The back wall 10 is formed into a substantially rectangular shape that is elongated in the step direction. A succession piece 17 is connected to one end of the rear wall 10 in the step direction via a first folding line L1. The first side wall 11 is formed in a substantially L-shape in which the front wall 12 side is lowered one step. The dimension of the lower end of the first side wall 11 in the step direction (front-back width) is about half the step-direction dimension (left-right width) of the back wall 10 . Although details will be described later, an intermediate wall 14 is arranged in a lowered part of the first side wall 11. The first side wall 11 is separated from the intermediate wall 14 by a first horizontal score line 31 extending in the step direction (horizontal direction). Note that an upper inner flap 18 is connected to the upper end of the rear side of the first side wall 11 via a second folding line L2.

<Front wall>
The front wall 12 is connected to the end of the first side wall 11 in the step direction of the L character, and is formed in a generally rectangular shape. The dimension (left and right width) of the front wall 12 in the step direction is approximately the same as the dimension (left and right width) of the back wall 10 in the step direction, and the dimension (height) of the front wall 12 in the flow direction is the same as that of the back wall 10 in the flow direction. It is about half the size (height). Although details will be described later, two partition walls 16 and a connecting wall 15 are arranged above the front wall 12. The front wall 12 has two lower curved score lines 33 that extend downward while curving from one side to the other in the step direction, and two first partition fold lines L11 that extend upward from the lower ends of the two lower curved score lines 33. It is divided into two partition walls 16 by. Further, the front wall 12 is separated from the connecting wall 15 by a second horizontal score line 32 extending in the step direction (horizontal direction). The lower curved score line 33 located on the first side wall 11 side is formed continuously from the first horizontal score line 31.

<Second side wall>
The second side wall 13 is formed in a substantially rectangular shape. The dimension (front-to-back width) of the second side wall 13 in the step direction is approximately the same as the front-to-back width of the first side wall 11, and the dimension (height) of the second side wall 13 in the flow direction is approximately the same as the height of the back wall 10. .

<Intermediate wall>
The intermediate wall 14 is provided above the front wall 12 so as to straddle the first side wall 11 and the front wall 12 . The intermediate wall 14 is arranged at a lower part of the first side wall 11, and is connected to the first side wall 11 via a first intermediate fold line L13 extending in the flow direction (vertical direction). The intermediate wall 14 is formed in a generally rectangular shape, and the dimension (left-right width) of the intermediate wall 14 in the step direction is approximately the same as the left-right width of the front wall 12. As already explained, the first horizontal score line 31 is formed at the boundary between the intermediate wall 14 and the first side wall 11.

Two partition walls 16 are arranged between the intermediate wall 14 and the front wall 12. The intermediate wall 14 has two upper curved score lines 34 formed substantially parallel to the two lower curved score lines 33, and two second partition fold lines L12 extending downward from the upper ends of the two upper curved score lines 34. It is divided into two partition walls 16 by. The upper curved score line 34 located on the second side wall 13 side is formed continuously from the second horizontal score line 32. The second partition fold line L12 located on the first side wall 11 side is formed continuously from the first fold line L1 that forms the boundary between the first side wall 11 and the front wall 12. Further, the second partition fold line L12 located between the two upper curved score lines 34 is formed continuously from the first partition fold line L11 located between the two lower curve score lines 33.

<Connecting wall>
The connecting wall 15 is arranged between the second side wall 13 and the intermediate wall 14. As already explained, the second horizontal score line 32 is formed at the boundary between the connecting wall 15 and the front wall 12. The connecting wall 15 is formed into a substantially rectangular shape having substantially the same size as a part of the intermediate wall 14 disposed at a lower part of the first side wall 11 .

The connecting wall 15 is connected to one end (front end) of the second side wall 13 in the step direction via the connecting fold line L15, and connected to the other end (right end) of the intermediate wall 14 in the step direction via the second intermediate bend line L14. It is set up. The connecting fold line L15 is formed continuously from the first fold line L1 that forms the boundary between the front wall 12 and the second side wall 13. The second intermediate fold line L14 is formed continuously from the first partition fold line L11 located on the second side wall 13 side. The second intermediate fold line L14 does not extend to the lower end of the connecting wall 15, and a locking cut line 35 for opening a substantially rectangular locking hole 36 is formed in the lower part of the intermediate wall 14. The locking cut line 35 is formed in an inverted substantially L-shape so as to protrude from the second intermediate fold line L14 toward the intermediate wall 14 side.

<Partition wall>
The two partition walls 16 are each formed in a range surrounded by a lower curved score line 33, an upper curved score line 34, a first partition fold line L11, and a second partition fold line L12. Each partition wall 16 is formed in a substantially fan shape that curves downward from one side toward the other in the step direction. Each partition wall 16 is connected to the front wall 12 via a first partition fold line L11, and is connected to the intermediate wall 14 via a second partition line L12. That is, each partition wall 16 is constructed between the front wall 12 and the intermediate wall 14.

<Reinforcement piece>
The reinforcing piece 20 is connected to the upper end of the second side wall 13 via a pair of reinforcing broken lines L16. To be precise, the reinforcing piece 20 is connected to the upper end of the second side wall 13 on the connecting wall 15 side (front side). A pair of reinforcing broken lines L16 are formed substantially parallel to each other with a slight interval between them. Note that an upper inner flap 18 is connected to the rear side of the upper end portion of the second side wall 13 via a second folding line L2.

The reinforcing piece 20 is formed into a substantially rectangular shape. The dimension in the step direction (front-to-back width) of the reinforcing piece 20 is slightly shorter than the dimension in the step direction (front-to-back width) of the connecting wall 15, and the dimension in the flow direction (height) of the reinforcing piece 20 is the same as that of the connecting wall 15 in the flow direction. It is set slightly longer than the dimensions (height). A substantially rectangular locking convex portion 37 is provided at the rear end of the front end side of the reinforcing piece 20 to protrude rearward.

<Grip part>
The grip part 21 has a front grip wall 40 and a back grip wall 43.

(Front gripping wall)
The front gripping wall 40 is connected to the upper end of the intermediate wall 14 via the second folding line L2. The front gripping wall 40 is formed into a substantially rectangular shape with a corner on the tip side chamfered into an arc shape. A generally elliptical front grip hole 41 that is long in the step direction is opened near the center of the front grip wall 40 . A fan-shaped front convex portion 42 is connected to the upper edge of the front grip hole 41 via a front grip fold line L17.

(back gripping wall)
The back grip wall 43 includes a back grip main body 43A and a grip insertion piece 43B. The back grip main body 43A is connected to the tip of the front grip wall 40 via the third folding line L3. The back grip main body 43A is formed in a shape that is approximately line symmetrical to the front grip wall 40 with the third folding line L3 as an axis. The back gripping body 43A has a back gripping hole 44, a rear protrusion 45, and a back gripping broken line L18 formed at positions that are approximately line symmetrical to the front gripping hole 41. The gripping insertion piece 43B is connected to the tip of the rear gripping wall 43 via the fourth folding line L4. The grip insertion piece 43B is formed into a substantially rectangular shape that is narrower in the step direction than the back grip main body 43A.

<Lid part>
The lid portion 22 includes a lid main body 22A and a lid insertion piece 22B. The lid main body 22A is formed in a substantially rectangular shape and is connected to the upper end of the back wall 10 via the second folding line L2. The dimension of the lid main body 22A in the flow direction (extension dimension (front-rear width)) is approximately the same as the dimension of the uppermost end of the first side wall 11 in the step direction (front-rear width). The lid insertion piece 22B is connected to the tip of the lid main body 22A via the fifth folding line L5. The lid insertion piece 22B is formed into a substantially rectangular shape with a corner on the tip side chamfered in an arc shape. A pair of notches 22C are formed along the fifth folding line L5 on both sides of the lid insertion piece 22B in the step direction.

<Bottom>
The bottom portion 23 has a pair of first bottom walls 46 and a pair of second bottom walls 47. Note that since the pair of first bottom walls 46 have substantially the same shape, one first bottom wall 46 will be described below unless otherwise specified. Similarly, hereinafter, mainly one second bottom wall 47 will be described.

(1st bottom wall)
The pair of first bottom walls 46 are connected to the lower ends of the back wall 10 and the front wall 12 via the sixth fold line L6. The first bottom wall 46 is formed in a generally rectangular shape, and the dimension (extension dimension) of the first bottom wall 46 in the flow direction is set to be slightly longer than half the longitudinal width of the second side wall 13 . A substantially trapezoidal engaging recess 46A is cut out on the tip side of the first bottom wall 46. On the other side of the first bottom wall 46 in the step direction (on the second bottom wall 47 side), an inclined fold line L19 is formed obliquely from the corner of the engagement recess 46A toward the base end of the second bottom wall 47. A substantially triangular bottom adhesive portion 46B is defined in the corner region of the first bottom wall 46 by the inclined fold line L19.

(Second bottom wall)
The pair of second bottom walls 47 are connected to the lower ends of the first side wall 11 and the second side wall 13 via the sixth fold line L6. The second bottom wall 47 is formed into a substantially trapezoidal shape that gradually becomes narrower from the base end toward the tip end. The dimension (extension dimension) of the second bottom wall 47 in the flow direction is approximately half the front-to-back width of the second side wall 13 .

In addition, the first to sixth fold lines L1 to L6, the first partition fold line L11, the second partition fold line L12, the first intermediate fold line L13, the second intermediate fold line L14, the connecting fold line L15, the reinforcement fold line L16, the front grip fold line L17, The back grip fold line L18 and the inclined fold line L19 are general-purpose ruled lines obtained by crushing the corrugated cardboard sheet in the thickness direction from the back liner 9C side. The general-purpose ruled line has a function of folding the corrugated cardboard sheet so that the back liner 9C faces inward (normal folding), and a function of folding the corrugated cardboard sheet so that the front liner 9B faces inward (reverse folding). There is. Note that the above-mentioned plurality of folding lines L1 to L6 and L11 to L19 are not limited to general-purpose ruled lines, but are also perforated lines in which a plurality of cuts are formed at predetermined intervals, and lead ruled lines in which perforated lines are formed on general-purpose ruled lines. Any line may be used as long as it is a line for folding a corrugated cardboard sheet.

[Assembling the packaging box]
Next, the assembly procedure of the packaging box 1 will be explained with reference to FIGS. 1, 3 to 7. FIG. 3 is a perspective view showing the packaging box 1 in a folded state. FIG. 4 is a perspective view showing the process of assembling the packaging box 1. FIG. 5 is a perspective view showing the reinforcing piece 20 folded back inward. FIG. 6 is a perspective view showing the rear of the packaging box 1. FIG. 7 is a side sectional view showing a part of the packaging box 1.

First, the initial state of the packaging box 1 before assembly will be explained. As shown in FIG. 3, in the packaging box 1 in the initial state, the back wall 10 is folded back to the back side of the front wall 12 and the intermediate wall 14 along the first folding line L1, and the second side wall 13 is folded back along the first folding line L1. It is folded back to the back side of the front wall 12 and the connecting wall 15 along L1 and the connecting fold line L15. Then, the passage piece 17 is adhered to the inner surface (back liner 9C) of the second side wall 13, and the packaging box 1 in the initial state is folded double. Moreover, although it is not clear from FIG. 3, the first bottom wall 46 and the second bottom wall 47 are folded back inward along the sixth folding line L6. Further, the bottom adhesive portion 46B of the first bottom wall 46 is reversely folded along the inclined fold line L19, and is bonded to the front liner 9B of the second bottom wall 47.

A worker assembles the folded packaging box 1. Specifically, as shown in FIG. ). Then, the intermediate wall 14 is folded normally along the first intermediate fold line L13 and reversely folded along the second intermediate fold line L14. Moreover, each partition wall 16 is folded normally along the first partition fold line L11, and reversely folded along the second partition fold line L12. Further, the folded first bottom wall 46 and second bottom wall 47 are pushed out until they become substantially parallel to each other while returning the reversely folded bottom adhesive portion 46B to a flat state. Furthermore, the pair of first bottom walls 46 enter into the engaging recess 46A and are engaged with each other. The bottom 23 of the packaging box 1 is a so-called one-touch bottom that is automatically formed by bending the first and second side walls 13 at substantially right angles to the back wall 10 and the like.

As a result of the above, the front wall 12 is disposed opposite to the lower side of the rear wall 10 with a space in between (see also FIG. 7). The intermediate wall 14 is disposed opposite to the upper side of the back wall 10 between the back wall 10 and the front wall 12, and forms a storage space S1 between the front wall 12 and the front wall 12 for storing the beverage can M (see also FIG. 7). ). To be precise, three accommodation spaces S1 are formed between the front wall 12 and the intermediate wall 14 by the two partition walls 16. Moreover, the intermediate wall 14 forms a second accommodation space S2 between it and the rear wall 10 (see FIG. 7). The second storage space S2 is, for example, a space for storing other wrapped items (not shown) such as prizes.

In this state, as shown in FIG. 4, the first side wall 11 connects the left ends (one end in the left-right direction) of the rear wall 10, the front wall 12, and the intermediate wall 14, and the second side wall 13 The right end (the other end in the left-right direction) is connected to the wall 12. The connecting wall 15 connects the front end of the second side wall 13 and the right end of the intermediate wall 14, and overlaps the inner surface (back liner 9C) of the second side wall 13. Further, as the connecting wall 15 is bent, a part of the intermediate wall 14 is cut along the locking cut line 35, and a locking hole 36 is opened.

Next, as shown in FIG. 5, the worker folds back the reinforcing piece 20 inward along the pair of reinforcing fold lines L16. The reinforcing piece 20 is folded back inward to cover substantially the entire connecting wall 15, and overlaps the surface of the connecting wall 15 (front liner 9B). The locking convex portion 37 of the reinforcing piece 20 is caught in a locking hole 36 opened in the intermediate wall 14. That is, the reinforcing piece 20 is locked to the intermediate wall 14 in a state covered by the connecting wall 15 . Since the connecting wall 15 is pressed against the second side wall 13 by the reinforcing piece 20, it is maintained in a state where it is overlapped with the second side wall 13.

Further, the front gripping wall 40 extends upward from the upper end of the intermediate wall 14, and the back gripping wall 43 is connected to the upper end of the front gripping wall 40 (see FIG. 4). The operator folds back the back gripping wall 43 (rear gripping main body 43A) at the third folding line L3 (border with the front gripping wall 40), and overlaps the back gripping wall 43 on the back side of the front gripping wall 40 (back liner 9C). . The rear gripping hole 44 of the rear gripping wall 43 faces (substantially coincides with) the front gripping hole 41 of the front gripping wall 40, and constitutes one gripping hole 21A. Further, the fourth folding line L4 substantially coincides with the second folding line L2 (see FIG. 7). Moreover, the gripping insertion piece 43B (the tip end side of the back gripping wall 43) is arranged in the second accommodation space S2 (see FIG. 7). In this state, the front gripping wall 40 and the back gripping wall 43 constitute the gripping portion 21 which is a double wall.

The operator stores beverage cans M in each storage space S1 (see FIG. 1), and stores other items to be packaged, such as prizes, in the second storage space S2. In addition, in FIG. 5, illustration of the beverage can M is omitted in order to clearly show the structure of the packaging box 1.

The worker folded the upper inner flap 18 inward along the second folding line L2 (see FIG. 5), folded the lid main body 22A forward along the second folding line L2, and folded it at the fifth folding line L5. The lid insertion piece 22B is inserted into the second accommodation space S2 while contacting the grip insertion piece 43B (see FIGS. 6 and 7). As shown in FIG. 7, the lid part 22 (lid main body 22A) presses the gripping insertion piece 43B (the tip side of the rear gripping wall 43) disposed in the second storage space S2, and Close the top opening. The lid portion 22 has a function of closing the upper opening of the second accommodation space S2 and a function of pressing the rear gripping wall 43 against the front gripping wall 40.

Through the above steps, a packaging box 1 containing beverage cans M, prizes, etc. is assembled (see FIG. 1). Note that the gripping portion 21 (front gripping wall 40, back gripping wall 43) is bent forward or backward at a substantially right angle along the second folding line L2 and the fourth folding line L4, and is bent at a substantially right angle to the upper surface or the lid of the beverage can M. 22 (not shown). This makes it possible to stack a plurality of packaging boxes 1 during transportation or display at a store. Further, the purchaser (user) of the beverage (beverage can M) can put his/her hand into the grip hole 21A, grip the grip portion 21, and carry the packaging box 1 containing the beverage can M and the like. At this time, the front convex part 42 and the back convex part 45 formed inside the grip hole 21A are bent forward or backward along the front grip fold line L17 and the back grip fold line L18 to protect the purchaser's hands.

In the packaging box 1 according to the present embodiment described above, the reinforcing piece 20 is covered by the connecting wall 15 and is locked to the intermediate wall 14, and the second side wall 13, the connecting wall 15, and the reinforcing piece 20 are arranged in a triple wall. (See Figure 5). According to this configuration, since the connecting wall 15 is sandwiched between the second side wall 13 and the reinforcing piece 20, the connecting wall 15 can be separated from the second side wall 13 without bonding the connecting wall 15 to the second side wall 13. It is prevented from doing so. Moreover, since the reinforcing piece 20 is locked to the intermediate wall 14, the effort of adhering the reinforcing piece 20 to the connecting wall 15 or the like can be omitted. Thereby, the packaging box 1 can be easily assembled while maintaining the strength (rigidity) necessary for the packaging box 1. Further, the packaging box 1 can be easily assembled manually by an operator without using adhesive or the like.

Moreover, according to the packaging box 1 according to the present embodiment, a plurality of accommodation spaces S1 can be formed between the front wall 12 and the intermediate wall 14 by the partition wall 16. As a result, since the plurality of beverage cans M (items to be packaged) are adjacent to each other with the partition wall 16 in between, it is possible to prevent adjacent beverage cans M from coming into direct contact with each other and being damaged.

Further, according to the packaging box 1 according to the present embodiment, other packaged items such as prizes can be stored in the second storage space S2 formed between the back wall 10 and the intermediate wall 14. . In addition, although the second accommodation space S2 accommodated another packaged object different from the beverage can M, the present invention is not limited thereto, and the beverage can M may also be accommodated.

Furthermore, in the packaging box 1 according to the present embodiment, the double-walled gripping portion 21 is formed by folding back the rear gripping wall 43 and stacking it on the front gripping wall 40 (see FIGS. 1 and 7, etc.). According to this configuration, the user can insert his/her hand into the grip hole 21A, grip the grip portion 21, and easily transport the packaging box 1 containing the beverage can M and the like. Further, the tip side (grip insertion piece 43B) of the folded back gripping wall 43 enters the second housing space S2, and is connected to the front gripping wall 40 by the lid portion 22 that closes the second housing space S2. It was pressed (see Figure 7). According to this configuration, the back grip wall 43 can be maintained in a state overlapping the front grip wall 40 without bonding the back grip wall 43 to the front grip wall 40 .

In addition, in the packaging box 1 according to the present embodiment, the reinforcing piece 20 is formed to cover substantially the entire connecting wall 15, but the present invention is not limited to this. For example, the reinforcing piece 20 may be formed smaller than the connecting wall 15 and may cover only a portion of the connecting wall 15 (not shown). Further, the reinforcing piece 20 may extend from the upper end to the lower end of the second side wall 13, and the tip of the reinforcing piece 20 may be in contact with the bottom portion 23 (not shown).

Further, in the packaging box 1 according to the present embodiment, the reinforcing piece 20 (locking protrusion 37) is locked in the locking hole 36 opened in the intermediate wall 14, but the present invention is not limited to this. For example, a locking hole 36 may be formed in the front wall 12 or the second side wall 13, and the reinforcing piece 20 may be locked in the locking hole 36 formed in the front wall 12 or the second side wall 13 (not shown). figure). Further, at least one of the front wall 12, the intermediate wall 14, and the second side wall 13 is provided with two or more locking holes 36 and two or more locking protrusions 37, so that the reinforcing piece 20 is locked at two or more places. (not shown). Furthermore, the locking hole 36 and the locking protrusion 37 may be omitted, and the reinforcing piece 20 may be fixed by being press-fitted between the front wall 12 and the intermediate wall 14. That is, the reinforcing piece 20 only needs to be locked to at least one of the front wall 12 , the intermediate wall 14 , and the second side wall 13 in a state covered by the connecting wall 15 .

Further, in the packaging box 1 according to the present embodiment, the reinforcing piece 20 is connected to the second side wall 13 via the pair of reinforcing folded lines L16, but the present invention is not limited to this. It may be connected to the second side wall 13 (not shown).

Further, in the packaging box 1 according to the present embodiment, the reinforcing piece 20 is continuously provided at the upper end of the second side wall 13, but the present invention is not limited to this. For example, as shown in FIG. 8, the reinforcing piece 50 according to the modification is formed by cutting a part of the second side wall 13, and is folded back from below to above along one or a pair of reinforcing fold lines L16. It's okay. In this case, it is preferable that the formation positions of the locking hole 36 and the locking protrusion 37 are changed as appropriate.

Further, in the packaging box 1 according to the present embodiment, the intermediate wall 14 is spaced apart from the back wall 10, but the present invention is not limited to this. For example, if the second accommodation space S2 is not required, the intermediate wall 14 may be in contact with the rear wall 10 (not shown). In this case, the lid portion 22 and the upper inner flap 18 are omitted.

Further, in the packaging box 1 according to the present embodiment, two partition walls 16 are provided and three storage spaces S1 are formed, but the present invention is not limited to this. The number of partition walls 16 (accommodation space S1) can be freely set. Moreover, the partition wall 16 may be omitted (deleted) and one accommodation space S1 may be formed.

Furthermore, in the packaging box 1 according to the present embodiment, the first side wall 11 connects the left end of the back wall 10, etc., and the second side wall 13 connects the right end of the back wall 10, etc., but the present invention Not limited. For example, even if the arrangement of the first side wall 11 and the second side wall 13 is reversed, the first side wall 11 connects the right end of the back wall 10, etc., and the second side wall 13 connects the left end of the back wall 10, etc. good.

Furthermore, in the packaging box 1 according to the present embodiment, the gripping portion 21 (the front gripping wall 40 and the back gripping wall 43) was configured to be bent at the second folding line L2 and the fourth folding line L4. However, the present invention is not limited to this, and the second folding line L2 and the fourth folding line L4 may be omitted so that the grip portion 21 is not bent (not shown). Furthermore, although the gripping portion 21 (front gripping wall 40, rear gripping wall 43) was provided with a front protrusion 42 and a rear protrusion 45, these may be omitted (not shown). Further, although the packaging box 1 according to the present embodiment is provided with the gripping portion 21 (the front gripping wall 40 and the back gripping wall 43), the gripping portion 21 may be omitted (not shown).

Furthermore, although the packaging box 1 according to the present embodiment was provided with the lid portion 22 and the upper inner flap 18 that close the upper surface opening of the second storage space S2, the lid portion 22 and the upper inner flap 18 are omitted. , the top opening of the second accommodation space S2 may be left open (not shown).

Further, in the packaging box 1 according to the present embodiment, the bottom portion 23 is a so-called one-touch bottom, but the present invention is not limited to this. For example, the bottom of the other example includes a pair of lower inner flaps connected to the lower ends of the first and second side walls 11 and 13, and a pair of lower inner flaps connected to the lower ends of the rear wall 10 and the front wall 12. (not shown). The bottom surface may be configured by fixing a pair of lower outer flaps onto a pair of inner flaps, or by attaching an adhesive tape to the abutting portions of the pair of lower outer flaps.

Moreover, the packaging box 1 according to the present embodiment was formed into a substantially rectangular shape when viewed from the top by the back wall 10, the first side wall 11, the front wall 12, and the second side wall 13 (connecting wall 15). The invention is not limited to this. For example, in the packaging box 1, at least one of the back wall 10, the first side wall 11, the front wall 12, and the second side wall 13 (connecting wall 15) has a chamfered wall so that it has a pentagonal to octagonal shape when viewed from above. (not shown).

Further, although the packaging box 1 according to the present embodiment is formed of a double-sided corrugated cardboard sheet made of paper, the present invention is not limited thereto. For example, the corrugated cardboard sheet may be a single-sided corrugated cardboard sheet in which a liner is attached to one side of the core 9A, or a double-sided corrugated cardboard sheet in which a single-sided corrugated sheet and a double-sided corrugated sheet are laminated. Further, for example, instead of the paper corrugated sheet, it may be formed of cardboard, a resin board, or the like. Further, in the blank 5, the direction in which the core 9A extends is merely an example, and the step direction and the flow direction may be reversed.

Note that the description of the above embodiment shows one aspect of the packaging box according to the present invention, and the technical scope of the present invention is not limited to the above embodiment. The present invention may be variously changed, replaced, and modified without departing from the spirit of the technical idea, and the scope of the claims includes all embodiments that can be included within the scope of the technical idea.

1 Packaging box 10 Rear wall 11 First side wall 12 Front wall 13 Second side wall 14 Intermediate wall 15 Connecting wall 16 Partition wall 20, 50 Reinforcing piece 22 Lid 23 Bottom 40 Front gripping wall 41 Front gripping hole 43 Rear gripping wall 44 Back Grip hole M Beverage can (packaged item)
S1 Accommodation space S2 Second accommodation space

Claims (4)

A packaging box (1) having a bottom (23) and an opening on the top surface,
a back wall (10);
a front wall (12) disposed opposite to the lower side of the rear wall with a space in between;
An intermediate wall (14) that is disposed opposite to the upper side of the back wall between the back wall and the front wall, and forms a storage space (S1) between the front wall and the front wall for accommodating the object to be packaged (M). and,
a first side wall (11) connecting one end of the rear wall, the front wall, and the intermediate wall in the left-right direction;
a second side wall (13) connecting the other ends of the rear wall and the front wall in the left-right direction;
a connecting wall (15) connecting the front end of the second side wall and the other end of the intermediate wall in the left-right direction and overlapping the inner surface of the second side wall;
The front surface is connected to the upper end of the second side wall, or is formed by cutting a part of the second side wall, and is folded inward and covered by at least a portion of the connecting wall. A packaging box comprising: a wall; and a reinforcing piece (20) secured to at least one of the intermediate wall and the second side wall. The packaging box according to claim 1, further comprising a partition wall (16) constructed between the front wall and the intermediate wall and forming a plurality of the storage spaces. The packaging box according to claim 1 or 2, wherein the intermediate wall forms a second accommodation space (S2) between the intermediate wall and the rear wall. a front gripping wall (40) extending upward from the upper end of the intermediate wall and having a front gripping hole (41);
The front gripping wall is connected to the upper end of the front gripping wall, has a back gripping hole (44), and is folded back at the boundary with the front gripping wall so that the back gripping hole faces the front gripping hole. a rear gripping wall (43) that overlaps the rear surface of the wall and whose front end side is disposed in the second accommodation space;
a lid part (22) connected to the upper end of the rear wall and closing the upper opening of the second housing space while pressing the front end side of the rear gripping wall disposed in the second housing space; The packaging box according to claim 3, further comprising: a packaging box according to claim 3;

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