JP2021050011A - Folding lock structure of packing box - Google Patents

Abstract

To propose a packing box with a novel structure which is excellent in handleability even as a single unit, and excellent in integration by locking body panels facing each other in a folded state.SOLUTION: In a folding lock structure of a packing box 2 for locking body panels (a front plate part 11 and a rear plate part 12) facing each other in a folded state, a pair of lock pieces 81, 82 facing each other in a folded state are respectively formed in the plane of each of the body panels (the front plate 11 and the rear plate 12), the lock piece 82 on one side is raised in a direction away from the other lock piece 81 to form a through hole 82k, the other lock piece 81 is configured to be inserted into the formed through hole 82k and locked in the through hole 82k.SELECTED DRAWING: Figure 11

Description

The present invention relates to a technique for improving the collectability by maintaining a package to be discarded in a folded state.

Conventionally, for example, as shown in Patent Document 1, when a packaging box made of thick paper such as used cardboard is folded, the folded state is maintained to reduce the bulk and improve the collectability. The technology is known.

In Patent Document 1, in a packaging box composed of a square tubular main body formed by four body panels and a flap that seals the opening surface of the main body, the body panels adjacent to each other with a ruled line sandwiched therein are used. Two cutting lines or easy cutting lines that cross the ruled line are cut and provided, and a folding lock piece that faces the ruled line is formed between the cutting lines or between the easy cutting lines, and the ruled line is sandwiched between them. Disclosed is a configuration in which a cutting line or an easy cutting line for partitioning one or both end edges of both end edges of facing folding lock pieces is cut at a position shifted with respect to the ruled line.

Patent No. 471050

In the configuration of Patent Document 1, when disassembling the packaging box for disposal, the flap is first opened to form a tubular state, folded at the two ruled lines, and then the lock piece is bent to lock. It is a thing.

However, when the direction of the tubular tubular shaft is the depth direction and the direction orthogonal to the depth direction is the width direction, the lock pieces are located at both ends in the width direction.

For this reason, the body panels located in the central portion in the width direction and facing each other are not particularly locked to each other, and a gap remains to be formed, so that a plurality of packaging boxes are tied with a string. Instead, when the packaging box is disposed of as a single unit, the central portion in the width direction of the packaging box tends to open, which makes handling inconvenient.

In view of the above problems, the present invention proposes a packaging box having a new configuration, which is excellent in handleability and integration even as a single unit by locking the body panels facing each other in a folded state. It is a thing.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.

According to one aspect of the invention
It is a folding lock structure of the packaging box for locking the body panels facing each other in the folded state.
A pair of lock pieces facing each other in a folded state are formed in the surface of each body panel.
One lock piece is raised in a direction away from the other lock piece to form a through hole.
The other lock piece is inserted into the formed through hole and locked in the through hole.
It has a folding lock structure for the packaging box.

Further, according to one aspect of the present invention.
Two sets of a pair of lock pieces are provided, and each set is arranged at a position close to both ends in the long side direction of each body panel.

Further, according to one aspect of the present invention.
The body panel is composed of a front plate portion, a rear plate portion facing the front plate portion, and a first side plate portion and a second side plate portion forming side surfaces thereof, respectively. , The first side plate portion, the rear plate portion, and the second side plate portion are arranged in this order, and the front plate portion is bent by a ruled line at the boundary between the first side plate portion and the rear plate portion. And the lock pieces provided on the rear plate portion face each other.

According to the configuration of the present invention, since the locking by the lock piece is performed in the plane of the body panel, the body panels can be engaged with each other at the central portion in the width direction of the folded packaging box. The generation of a gap in the central part is suppressed, and it is possible to prevent the tendency to open and inconvenient to handle.

In addition, it will be locked at two points in the long side direction, and the folded state can be maintained more reliably.

Further, it can be folded by folding in half, and in the folded state, the lock piece can be arranged in the central portion in the horizontal direction.

(A) is a perspective view of the appearance of the packaging box according to the first embodiment, and (B) is a perspective view of the used state of the packaging box according to the first embodiment. It is a development view of the packaging box which concerns on Example 1. FIG. (A) is a diagram for explaining a portion of the opening lid, and (B) is a diagram for explaining a state where the opening lid is opened. It is a figure explaining the structure which fixes the opening lid. (A) is a perspective view of the appearance of the packaging box according to the second embodiment, and (B) is a perspective view of the used state of the packaging box according to the second embodiment. It is a development view of the packaging box which concerns on Example 2. FIG. (A) is a diagram for explaining a portion of the opening lid, and (B) is a diagram for explaining a state where the opening lid is opened. It is a figure explaining the structure which fixes the opening lid. It is a figure explaining the structure of the thin part. It is a figure explaining the structure of the lock piece. It is a figure explaining the state in which the packaging box is folded. (A) is a diagram for explaining a locked state, and (B) is a diagram for explaining a state when (A) is viewed from an angle.

Hereinafter, embodiments of the present invention will be described with reference to examples.

FIG. 1A is a perspective view of the appearance of the packaging box 2 according to the first embodiment, and FIG. 1B is a perspective view of the used state of the packaging box 2 according to the first embodiment. FIG. 2 is a development view of the packaging box 2 according to the first embodiment. FIG. 3A is a diagram for explaining a portion of the opening lid 40, and FIG. 3B is a diagram for explaining a state in which the opening lid 40 is opened. FIG. 4 is a diagram illustrating a structure for fixing the opening lid 40. In the following description, for convenience, the vertical direction of the paper surface in FIG. 2 will be referred to as the vertical direction or the height direction, and the horizontal direction of the paper surface will be described as the horizontal direction, the horizontal direction, or the horizontal direction.

As shown in FIGS. 1A and 1B, the packaging box 2 is formed in a rectangular parallelepiped shape, and accommodates a plurality of PET bottles 3 which are beverage containers. The front plate portion 11 on the front side of the packaging box 2 is provided with an opening lid 40 defined by breaking the cut line (perforation), and the opening lid 40 is flipped up. Then, the outlet 50 is formed.

FIG. 2 is a blank corresponding to the unfolded packaging box 2. The blank is made of a corrugated cardboard sheet, and has a front plate portion 11 that is on the front side in a used state and a rear plate portion that faces the front plate portion 11. It has 12 and side plate portions 13 and 14 constituting the side surfaces, respectively. A joint 15 is continuously provided on the outer edge of one side plate portion 14. Further, flaps 11a, 11b, 12a ... Are continuously provided at both end edges of each plate portion in the longitudinal direction.

As shown in FIGS. 2 and 3A, a cut line 4 for forming the opening lid 40 is continuously provided on one side end of the front plate portion 11 in the longitudinal direction and the flap 11a. .. The cut line 4 is formed in the vertical lines 4a and 4b (FIG. 3 (A)) extending in the vertical direction at intervals in the horizontal direction in the front plate portion 11 and in the flap 11a from the lower ends of the vertical lines 4a and 4b. It has curved lines 4c and 4d (FIG. 3A) that are curved so as to approach each other, and horizontal lines 4e (FIG. 2) that connect the lower ends of the curved lines 4c and 4d in the flap 11a.

As shown in FIGS. 2 and 3A, the upper ends of the vertical lines 4a and 4b are connected by a ruled line 5a which is a valley fold line. Further, a ruled line 5b exists between the front plate portion 11 and the flap 11a, and cut lines 4 (curved lines 4c and 4d (FIG. 3A)) are formed so as to straddle the ruled line 5b.

By breaking the cut line 4 configured as described above, the opening lid 40 as shown in FIG. 4 is formed, and by flipping up while bending along the ruled line 5a, the outlet 50 is formed.

As shown in FIG. 4, a locking hole 11m for inserting the locking piece 40a of the opening lid 40 is provided at a position above the ruled line 5a in the front plate portion 11. As shown in FIG. 3A, the locking hole 11m breaks the lateral cut lines 6a provided in the front plate portion 11 and the diagonal cut lines 6b and 6b at both ends thereof, and also cuts the cut lines. It is opened by folding a mountain along a ruled line 6c provided parallel to the lower part of 6a.

As shown in FIGS. 2 and 4, the locking piece 40a of the opening lid 40 is a portion existing in the flap 11a and is a portion bent along the ruled line 5b.

As described above, as shown in FIG. 4, the fixing structure is formed by the locking piece 40a of the opening lid 40 and the locking hole 11m, and the opening lid 40 is flipped up to lock the locking piece 40a. When inserted into the hole 11 m, the opening lid 40 can be maintained in an open state as shown in FIG. 3 (B).

By maintaining the state in which the opening lid 40 is kept open in this way, the opening lid 40 is opened halfway, and the opening lid 40 is accommodated without causing troublesome situations such as holding the opening lid 40 by hand. The PET bottle 3 that has been made can always be easily taken out.

Further, since the opening lid 40 is flipped up, the opening lid 40 can be accommodated along the front plate portion 11, and the opening lid 40 does not become half-opened to be an obstacle.

If the opening lid 40 is configured to be lowered toward you, the opening lid 40 may protrude to the front surface of the packaging box 2 and become an obstacle. However, since it is flipped up as described above, it is not possible at all. It doesn't get in the way. Further, even when the opening lid 40 is opened and the PET bottle 3 is installed so as to be arbitrarily taken out from the packaging box 2, the opening lid 40 does not protrude, so that the degree of freedom of the installation space is widened and the space-saving configuration can be achieved. realizable.

FIG. 5A is a perspective view of the appearance of the packaging box 2 according to the second embodiment, and FIG. 5B is a perspective view of the used state of the packaging box 2 according to the second embodiment. FIG. 6 is a development view of the packaging box 2 according to the second embodiment. FIG. 7A is a diagram for explaining a portion of the opening lid 40, and FIG. 7B is a diagram for explaining a state in which the opening lid 40 is opened. FIG. 8 is a diagram illustrating a structure for fixing the opening lid 40. In the following description, for convenience, the vertical direction of the paper surface in FIG. 5 will be referred to as the vertical direction or the height direction, and the horizontal direction of the paper surface will be described as the horizontal direction, the horizontal direction, or the horizontal direction.

As shown in FIGS. 5A and 5B, the packaging box 20 is formed in a rectangular parallelepiped shape, and accommodates a plurality of PET bottles 3 which are beverage containers. The front plate portion 21 on the front side of the packaging box 20 is provided with an opening lid 60 defined by breaking the cut line (perforation), and the opening lid 60 is flipped up. Then, the outlet 70 is formed.

FIG. 6 is a blank corresponding to the unfolded packaging box 20, which is made of a corrugated cardboard sheet, and has a front plate portion 21 which is on the front side in a used state and a rear plate portion which faces the front plate portion 21. It has 22 and side plate portions 23 and 24 that form side surfaces, respectively. A joint 25 is continuously provided on the outer edge of one side plate portion 24. Further, flaps 21a, 21b, 22a ... Are continuously provided at both end edges of each plate portion in the longitudinal direction.

As shown in FIGS. 6 and 7 (A), a cut line 64 for forming the opening lid 60 is continuously provided at one side end of the front plate portion 21 in the longitudinal direction. As shown in FIG. 7A, the cut lines 64 are the vertical lines 64a and 64b extending in the vertical direction at intervals in the horizontal direction in the front plate portion 21 and each other from the lower ends of the vertical lines 64a and 64b. Diagonal lines 64c and 64d extending diagonally downward, horizontal lines 64e and 64f extending diagonally from the lower ends of the diagonal lines 64c and 64d toward each other, and horizontal lines 64g connecting the lower ends of the horizontal lines 64e and 64f. Have.

As shown in FIGS. 6 and 7 (A), the upper ends of the vertical lines 64a and 64b are connected by a ruled line 25a which is a valley fold line. Further, arc-shaped ruled lines 25b and 25c are formed between the lower ends of the vertical lines 64a and 64b and both ends of the horizontal lines 64g.

By breaking the cut line 64 configured as described above, the opening lid 60 as shown in FIG. 8 is formed, and by flipping up while bending along the ruled line 25a, the outlet 70 is formed.

As shown in FIG. 8, at positions above the ruled line 25a in the front plate portion 21, locking holes 21m and 21n for inserting the locking pieces 60a and 60b of the opening lid 60 at intervals in the lateral direction are provided. Provided. Each of the locking holes 21m and 21n has a substantially V-shaped ruled line 26a provided on the front plate portion 21, an arc-shaped cut line 26b connecting both ends of the ruled line 26a, and a V of the ruled line 26a from the center of the cut line 26b. It has a cut line 26c on a straight line extending to the corner of the character. When the cut lines 26b and 26c are broken, a pair of locking pieces 27 and 27 are formed and the locking holes 21m and 21n are opened. In FIG. 8, the left locking hole 21m is in an unopened state, and the right locking hole 21n is in an opened state.

As shown in FIG. 8, the locking pieces 60a and 60b of the opening lid 60 are portions that are bent along the ruled lines 65b and 65c.

As described above, as shown in FIG. 8, the fixing structure is formed by the locking pieces 60a and 60b of the opening lid 60 and the locking holes 21m and 21n, and the opening lid 60 is flipped up to lock the locking pieces. When the 60a and 60b are inserted into the locking holes 21m and 21n, the opening lid 60 can be maintained in an open state as shown in FIG. 7B.

Further, by inserting the locking pieces 60a and 60b into the locking holes 21m and 21n and arranging them on the back side of the locking pieces 27 and 27, the locking pieces 60a and 60b are suppressed by the locking pieces 27 and 27 from the outside. As a result, the locking pieces 60a and 60b are prevented from being pulled out from the locking holes 21m and 21n.

With the above configuration, it is possible to realize the packaging box 20 having the same effect as that of the first embodiment in the second embodiment.

Next, a configuration for improving the ease of taking out the container will be described.
As shown in FIG. 2, regarding the flaps 13a and 14a forming the bottom when the packaging box 2 is used upright, the portion near the outlet 50 side is composed of thin thin portions 13c and 14c. There is.

As shown in FIG. 9, the side close to the outlet 50 is composed of a thin thin portion 13c, so that a step 13e is formed between the thin portion 13c and the thick portion 13d. The method for forming the thin portion 13c is not particularly limited. For example, by pressing the flaps 13a and 14a of the blank packaging box 2 with a roller, a press, or the like, the flaps 13a and 14a of the blank packaging box 2 are pressed more than other parts. It is possible to reduce the thickness.

Then, by forming the step 13e, the PET bottle 3 is guided to fall toward the thin portion 13c side, and can be moved to the side closer to the outlet 50.

Further, the once moved PET bottle 3 does not return to the corner 2s of the packaging box 2 due to the step 13e, and stays on the side close to the outlet 50.

As described above, by guiding the PET bottle 3 to the outlet 50 without staying in the corner 2s of the packaging box, it becomes difficult to take out the PET bottle 3 while staying in the corner 2s. It can be prevented and excellent take-out property can be realized.

In order to realize the above, for example, the distance W from the step 13e (the start portion 13m of the step) to the corner 2s of the packaging box 2 is 2/3 or more of the radius R of the PET bottle 3. , The radius can be R or less. According to the radius R or less, the PET bottle 3 which has lost the support from the side due to the removal of another PET bottle can be immediately moved to the thin portion 13c by its own weight. Further, by setting the radius R to 2/3 or more, it is possible to limit the PET bottle 3 once moved to the thin portion 13c so as to move only to the distance W position from the corner portion 2s.

Next, a configuration for locking the body panels facing each other in the folded state will be described.
FIG. 10 is a diagram illustrating a configuration of a lock piece. FIG. 11 is a diagram illustrating a state in which the packaging box is folded. FIG. 12 (A) is a diagram for explaining a locked state, and FIG. 12 (B) is a diagram for explaining a state in which (A) is viewed from an angle.

As shown in FIG. 2, in the present embodiment, the blank is the front plate portion 11 which is on the front side in the used state, the rear plate portion 12 which faces the front plate portion 11, and the side plate portions 13 which form the side surfaces, respectively. 14 and each of these plate portions functions as a body panel.

A set of lock pieces 81 and 82 is provided at positions facing each other in the front plate portion 11 and the rear plate portion 12 in a folded state. In this embodiment, it is assumed that two sets of lock pieces, that is, lock pieces 81 and 82 and lock pieces 83 and 84 are arranged so as to be displaced in the vertical direction and are locked at two places. There is.

As shown in FIG. 2, the lock pieces 81 and 82 are arranged in the planes of the front plate portion 11 and the rear plate portion 12, that is, the other body panels (side plate portions 13 and 14) adjacent to each other and the like. , Flaps 11a, 11b, 12a ..., ruled lines (9a, 9b ...) That are boundaries with the joint 15, and further, the front plate portion 11 and the rear plate portion without straddling the outer peripheral edge portion 9z. It is arranged inside the surface of the portion 12.

As shown in FIG. 10, the lock piece 81 provided on the front plate portion 11 has a horizontal cut line 81a extending in the lateral direction and diagonal cut lines 81b and 81c extending diagonally upward from both ends of the horizontal cut line 81a. It is formed in a trapezoidal shape surrounded by a ruled line 81d extending in the horizontal direction so as to connect the upper ends of the diagonal cut lines 81b and 81c. It is configured.

As shown in FIG. 10, the lock piece 82 provided on the rear plate portion 12 has a horizontal cut line 82a extending in the lateral direction and diagonal cut lines 82b, 82c extending diagonally downward from both ends of the horizontal cut line 82a. It is formed in a trapezoidal shape surrounded by a ruled line 82d extending in the horizontal direction so as to connect the lower ends of the diagonal cut lines 82b and 82c, and each cut line is broken and bent at the ruled line 82d to stand up. It is configured.

Then, as shown in FIG. 11, the used packaging box 2 is disassembled and folded so that the front plate portion 11 and the rear plate portion 12 overlap each other. First, as shown in FIGS. 12A and 12B. , The lock piece 82 is bent and raised to form a through hole 82k. Then, while bending the lock piece 81 so as to enter the through hole 82k, the tip of the lock piece 81 is projected from the through hole 82k.

In this way, the lock piece 81 is locked so as to be pressed against the edge of the through hole 82k, the lock piece 81 is suppressed from being pulled out from the through hole 82k, and the front plate portion 11 and the rear plate portion 12 overlap. The state is maintained.

The lock piece 83 shown in FIG. 10 is the lock piece 81 turned upside down, and the lock piece 84 is the lock piece 82 turned upside down. The set of the lock pieces 83 and 84 has the same configuration as the set of the lock pieces 81 and 82 and fulfills the same function, and thus the description thereof will be omitted.

The present invention can be realized as described above.
That is, as shown in FIGS. 1 to 4,
A beverage container / packaging box 2 in which an outlet 50 is formed in the front plate portion 11 by opening the opening lid 40 formed by breaking the cut line 4.
The opening lid 40 is to be flipped up and opened.
It has a fixing structure for fixing the opening lid 40 while it is open.
It is a beverage container packaging box 2.

As a result, the opening lid 40 is maintained in the open state, and the opening lid 40 is opened halfway, so that the opening lid 40 is accommodated without causing troublesome situations such as holding the opening lid 40 by hand. The PET bottle 3 that has been made can always be easily taken out.

Further, as shown in FIGS. 1 to 4,
The fixed structure includes a locking piece 40a provided on the opening lid 40 and a locking piece 40a.
A locking hole 11 m provided in the front plate portion 11 on which the outlet is formed, and
It is supposed to be composed of.

Thereby, the present invention can be realized with a simple configuration.

Further, as shown in FIGS. 5 to 8,
The fixed structure includes locking pieces 60a and 60b provided at two locations laterally separated from each other in the opening lid 60.
Locking holes 21m and 21n provided at two locations of the front plate portion 21 on which the outlet is formed, and
It is supposed to be composed of.

Thereby, the opening lid 60 can be securely fixed at two places.

Further, as shown in FIGS. 1A and 1B, the beverage container packaging box 2 is installed so that the PET bottle 3 which is a beverage container is laid on its side, and the outlet 50 is the lower part of the front plate portion 11. The beverage container is to be taken out by pulling it out laterally.

As a result, the opening lid 40 can be accommodated along the front plate portion 11, and the opening lid 40 does not become half-opened and interfere with the opening lid 40. If the opening lid 40 is configured to be lowered toward you, the opening lid 40 may protrude to the front surface of the packaging box 2 and become an obstacle, but it is flipped up as described above, so that it is completely in the way. Never become. Further, even when the opening lid 40 is opened and the PET bottle 3 is installed so as to be arbitrarily taken out from the packaging box 2, the opening lid 40 does not protrude, so that the degree of freedom of the installation space is widened and the space-saving configuration can be achieved. realizable.

Further, as shown in FIGS. 2 and 9, the outlet 50 is formed in the central portion of the beverage container packaging box 2 in the left-right direction in the used state, and the inner bottom surface of the beverage container packaging box 2 is formed. The flaps 13a and 14a extend from the corners 2s of the left and right ends of the beverage container packaging box 2 toward the outlet 50, respectively, and the thin and thin portions 13c of the flaps 13a and 14a are formed on the side close to the outlet 50. It is to be provided.

As a result, by guiding the PET bottle 3 to the outlet 50 without staying in the corner 2s of the packaging box, it is possible to prevent the PET bottle 3 from being difficult to take out while remaining in the corner 2s. It is possible to realize excellent take-out property.

Further, as shown in FIGS. 2 and 11,
It is a folding lock structure of the packaging box 2 for locking the body panels (front plate portion 11 and rear plate portion 12) facing each other in the folded state.
A pair of lock pieces 81 and 82 facing each other in a folded state are formed in the plane of each body panel (front plate portion 11 and rear plate portion 12), respectively.
One lock piece 82 is raised in a direction away from the other lock piece 81 to form a through hole 82k.
The other lock piece 81 is inserted into the formed through hole 82k and locked in the through hole 82k.
It is a structure.

In this configuration, since the locking pieces 81 and 82 are locked in the plane of the body panel, the body panels can be engaged with each other at the central portion in the width direction of the folded packaging box 2. The generation of a gap in the central part is suppressed, and it is possible to prevent the tendency to open and inconvenient to handle. Then, after being folded, it can be made excellent in handleability and integration even by itself.

Further, as shown in FIGS. 2 and 11,
Two sets of the pair of lock pieces 81 and 82 are provided, and each set is arranged at a position close to both ends in the long side direction of each body panel (front plate portion 11 and rear plate portion 12). To do.

As a result, it is locked at two points in the long side direction, and the folded state can be maintained more reliably.

Further, as shown in FIG. 2, the body panel includes a front plate portion 11, a rear plate portion 12 facing the front plate portion 11, and a first side plate portion 13 and a second side plate portion constituting side surfaces, respectively. The front plate portion 11, the first side plate portion 13, the rear plate portion 12, and the second side plate portion 14 are arranged in this order, and the first side plate portion 13 and the rear plate portion 13 and the rear plate portion 14 are arranged in this order. By bending along the ruled line 9b at the boundary of the plate portion 12, the lock pieces 81 and 82 provided on the front plate portion 11 and the rear plate portion 12 face each other.

As a result, it is possible to fold it in half, and in the folded state, the lock pieces 81 and 82 can be arranged at the central portion in the lateral direction.

2 Packaging box 3 PET bottle 9b Ruled line 11 Front plate part 12 Rear plate part 13 Side plate part 14 Side plate part 15 Joint 81 Lock piece 82 Lock piece 81a Horizontal cut line 81b Diagonal cut line 81c Diagonal cut line 81d Ruled line 82 Lock piece 82a Horizontal Cut line 82b Diagonal cut line 82c Diagonal cut line 82d Ruled line 82k Through hole

Claims (3)

It is a folding lock structure of the packaging box for locking the body panels facing each other in the folded state.
A pair of lock pieces facing each other in a folded state are formed in the surface of each body panel.
One lock piece is raised in a direction away from the other lock piece to form a through hole.
The other lock piece is inserted into the formed through hole and locked in the through hole.
Folding lock structure of the packaging box. Two sets of a pair of lock pieces are provided, and each set is arranged at a position close to both ends in the long side direction of each body panel.
The folding lock structure of the packaging box according to claim 1, wherein the packaging box is characterized by the above. The body panel is composed of a front plate portion, a rear plate portion facing the front plate portion, and a first side plate portion and a second side plate portion forming side surfaces thereof, respectively. , The first side plate portion, the rear plate portion, and the second side plate portion are arranged in this order, and the front plate portion is bent by a ruled line at the boundary between the first side plate portion and the rear plate portion. And the lock pieces provided on the rear plate portions face each other.
The folding lock structure of the packaging box according to claim 1 or 2, characterized in that.

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