JP2002284142A - Folding packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding packaging box in which end walls and right and left side walls are continuously connected to the bottom plate so as to be folded rising and falling and the end walls and foldable wall edge pieces on the upper side portions of the side walls are releasably connected by an engaging structure for the efficient and easy assembling of the box while improving the rigidity thereof. SOLUTION: In this folding packaging box, end walls 5 and 5a and right and left side walls 3 and 4 are connected to a square or rectangle bottom plate 2 so as to be folded raising and falling, foldable wall edge pieces 6 are provided on the respective upper side portions of end walls 5 and 5a and side walls 3 and 4 inwardly and substantially horizontally, and the engaging structure is provided which connects and locks the adjacent wall edge pieces 6 in a folded state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable packaging box capable of storing items such as cakes.

[0002]

2. Description of the Related Art Conventionally, for convenience of distribution and storage of a box itself, a paperboard packaging box assembled in a foldable manner as shown in FIG. 9 is already known. This packaging box has a box body 1a in which a front wall 5 and a rear wall 5a forming an end wall and side walls 3 and 4 are successively bent and undulated on a square or rectangular bottom plate 2, and an upper side of the rear wall 5a. The top plate 8 is continuously provided to form a lid 1b that covers the opening of the box body 1a. And the box assembly of the packaging box is a connecting piece 3c which integrally connects the rear wall 5a and the side walls 3 and 4.
Is folded inward, and the front wall 5 and the side walls 3 and 4 are formed with a series of folded pieces 3d which are folded inward, and the opposing surfaces of the folded pieces 3d are adhered with glue.

[0003]

However, in the case of the packaging box having the above-mentioned conventional configuration, the connecting piece 3c is not used when assembling the box.
Is folded inside and the box body 1a is formed by gluing the front wall 5 side and the folding pieces 3d on the side walls 3 and 4 side.
Adhesion work is required and assembly work becomes complicated, and the assembled box has disadvantages such as being expanded outward and the box edge being easily deformed by bending of the connecting piece 3c and the folding piece 3d. Further, in such a packaging box, when forming the wall edge piece 6 provided by being bent toward the inside of the box body 1a, the side wall 3,
4 and a wall edge piece 6 having a free end on the upper side of the front wall 5
Therefore, the positioning of the box becomes unstable and it tends to hang down, and the rigidity of the box cannot be sufficiently improved. In order to increase the rigidity of the box, it is attempted to bond the end portions of the adjacent wall edge pieces 6 to each other. However, the bonding means for bonding the wall edge pieces with an adhesive uses the structure and assembly work of the box body 1a. However, there are problems such as complexity and high cost. The present invention
It is intended to solve or improve these problems.

[0004]

A foldable packaging box according to the present invention for solving the above-mentioned problems is as follows. First, end walls 5, 5a and left and right side walls 3, 4 are provided on a square or rectangular bottom plate 2. A wall edge piece 6 that can be bent in a substantially horizontal direction toward the inside is provided on each of the upper sides of the end walls 5 and 5a and the side walls 3 and 4, and is adjacent to each other in the bent state. It is characterized in that a locking structure 7b for connecting and fixing the wall edge pieces 6 is provided.

[0005] Second, hook portions 7 and 7a for engaging and disengaging locking at the corner portions of adjacent wall edge pieces 6 provided on the end walls 5 and 5a and the side walls 3 and 4, respectively. Is formed.

Thirdly, the wall edge piece 6 is supported by a joint piece 50 or flaps 3a, 4a which can be bent on the end walls 5, 5a or the side walls 3, 4 side.

Fourth, a lid 1b is provided on the upper side of one end wall 5a.
In a state where the top plate 8 to be bent is continuously connected to bendable, and the joining pieces 50 are continuously connected to both sides of the end wall 5a so as to be able to be bent, and the base side of the joining piece 50 is joined to the side walls 3 and 4, respectively. , The side walls 3 and 4 and the joint piece 50 can be folded inward.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. A box body (packaging box) 1 made of paperboard shown in FIGS. 1 and 2 has left and right side walls 3, 4 and a front wall 5 as an end wall and a rear wall 5 on two opposite sides of a square or rectangular bottom plate 2. Wall 5
are connected to each other so as to be able to bend and undulate. Then, the box body (housing portion) suitable for accommodating an object to be housed is formed by connecting these members in a configuration described later by standing them.
1a can be configured to have a high rigidity with a simple folding structure, and an opening of the box body 1a is formed in series with the box body 1a and the rear wall 5a.
With b, it is possible to open and close efficiently and easily.

Further, the box body 1 of the illustrated example is capable of folding a cut-out paperboard with a fold as shown in a development view of FIG. 3 by means shown in FIG. When each peripheral wall is erected in the direction of the arrow, as shown in FIGS. 5 to 8, 2, and 1, it is possible to easily and quickly assemble the box 1. That is, as shown in FIGS. 3 and 4, the side walls 3, 4 connected to the bottom plate 2 of the box body 1 so as to be able to bend and undulate so that the flaps 3a, 4a having the height of the box body can be bent inward at the front end thereof. A wall edge piece 6 that can be bent in a substantially horizontal direction toward the inside is integrally formed via a fold 6a provided at the height of the box body on the upper side while being connected. A hook portion 7 described later is provided near the front end (corner portion) to constitute a locking structure 7b.

[0010] The width of the wall edge piece 6 is such that it is possible to take in and out the contents from the opening satisfactorily and to have a rigidity against external force from the side. By forming the hook portion 7 to be formed at the center of the width, it is possible to obtain a good appearance while having sufficient strength. Further, the flaps 3a, 4
a prevents a gap from being formed between the left and right ends of the front wall 5 and the front ends of the side walls 3 and 4 when the front wall 5 is erected, and regulates the rearward movement of the front wall 5. At the same time, even when a plurality of boxes 1 housing the stored items are stacked, the rigidity in the up-down direction is lower than that of the conventional one while restricting the hanging down of the wall edge piece 6 formed on the front wall 5 side. By making a remarkable improvement, the deformation of the box body 1 is prevented so that the stored contents are not damaged.

On the other hand, the front wall 5 is formed integrally with a wall edge piece 6 similar to that of the above-mentioned side walls 3 and 4 via a fold 6a. A hook portion 7a for detachably locking is formed to form a locking structure 7b. In this case, the wall edge pieces 6 of the front wall 5 are supported by the flaps 3a and 4a located on the left and right sides on the lower side, and the rigidity of the end wall is increased in the same manner as described above. For example, there is a feature that the box 1 having strength can be manufactured at a low cost even with a thin paperboard material.

Next, the locking structure 7b by the hooks 7 and 7a will be described in detail. The hook 7 formed on the wall edge piece 6 on the side walls 3 and 4 faces inward at the front side of the wall edge piece 6. It is formed by notching a sharp trough-shaped hook through portion 71 having a long cut hypotenuse portion 70,
Thus, when the hook 7a on the front wall 5 is engaged with the hook 7 from above or below the front, the hook 7a
The hooks 7 and the hooks 7a are quickly and reliably engaged with each other without causing a large contact with the wall edge pieces 6 on the side walls 3 and 4 side and without any hindrance. Things that can be simplified.

The hook 7a on the front wall 5 side is
Cut the corners on both sides of the box to approximately 45 degrees
Is formed so that the hook portion 7a can protrude at an acute angle from an intermediate portion thereof. Therefore, the left and right hook portions 7a formed on the wall edge piece 6 as described above are connected to the hook portions 7 of the side walls 3 and 4 from above by passing the hook passing portions 71 and 71 from above in the box assembled state shown in FIG. When engaged with the hook 7, as shown in FIG.
Thus, it is possible to reliably assemble the peripheral wall into a box with an inexpensive configuration without requiring an adhesive or the like while preventing the side walls 3 and 4 from expanding.

Further, since the ends of the hooks 7 and 7a are combined on the back side (lower side) of the wall edge piece 6 with each other, the hooks 7 and the like come off due to exposure to the surface of the wall edge piece 6. Impairment of easiness and appearance can be prevented. Further, since the oblique sides 72 on both sides appear in the diagonal direction of the box body 1 in a joined state, the aesthetic appearance of the box is improved, and the wall edge pieces 6, 6 and the bending structure thereof are pressed against the pressing force from the side. In addition, since the adjacent wall edge pieces 6 are connected and supported by the engagement of the hook portions 7 and 7a, there is an advantage that the durability of the box 1 can be improved with sufficient rigidity and resistance.

Next, the configuration of the rear wall 5a and the lid 1b will be described. First, the rear wall 5a is provided on both sides with joining pieces 5 of substantially the same width.
0 is integrally connected to the side walls 3 and 4 so as to be able to bend to the central portion thereof, and can be engaged and disengaged with a locking hole 51 formed in the bottom plate 2 at the lower end of the joining piece 50. A locking claw 52 that fits into and locks with the locking member 52 is formed. The left and right joint pieces 50
In a state in which each of the side walls 3 and 4 is bent inside, the bonding surface 53 between the base above and the rear of the corresponding left and right side walls 3 and 4 is connected to a bonding member such as glue or an appropriate stopper. And the locking claw 52 side piece is free in this joined state.

Between the lower end corners of the rear ends of the side walls 3 and 4 and the middle part of the wall edge piece 6 connected thereto, there is formed an oblique fold 55 which becomes a fold of a mountain line when the side wall is folded. With this configuration, as shown in FIG.
The wall edge piece 6 can be easily folded inward through the fold 55, and the rear wall 5a and the side walls 3 and 4 having the lid 1b can be folded together on the bottom plate 2. Thus, the folding width is substantially the same as the box width, and the handling form can be reduced in size. Also, when assembling box 1,
When the rear wall 5a is erected from the folded state, the side walls 3 and 4 can be erected at the same time via the joining piece 50, so that the assembling can be performed easily.

Next, the configuration of the lid 1b will be described. As shown in FIGS. 1 to 4, the lid 1b is integrally provided with a top plate 8 for closing the opening of the box main body 1a on the upper side of the rear wall 5a constituting the one end wall so as to be bent. The top plate 8 has a lid side wall 9 on both sides thereof and a lid front wall 90 connected to the front side so as to be bendable, and a joining piece 91 provided on both sides of the lid front wall 90 so as to be bendable. 9, and a diagonal fold 92 that is a fold line of a mountain line when the lid side wall 9 is folded inside the lid front wall 90 and the lid side wall 9.

With this configuration, the lid 1b can fold the lid side wall 9 and the lid front wall 90 inward, so that the rear wall 5
a and the side walls 3 and 4 can be easily folded so as to be superimposed on the bottom plate 2, and the folded width becomes substantially the same as the box width, so that the handling form can be reduced in size. When assembling the box 1, the rear wall 5a and the side wall 3,
4, the lid 1b can also be erected, and the lid side wall 9 and the lid front wall 90 can be opened outward to cover the upper part of the box body 1a well.

As described above, the box body 1 according to the present invention has the front wall 5 and the rear wall 5a and the left and right side walls 3 and 4 connected to the bottom plate 2 of the box body 1a so that the front wall 5 and the left and right walls 3 and 4 can be bent up and down. The upper wall portions of the side walls 3 and 4 are provided with wall edge pieces 6 that can be bent inward in a substantially horizontal direction, and the locking structure 7b that connects adjacent wall edge pieces 6 in a detachable manner. The front wall 5 and the left and right side walls 3 and 4 are connected to form a box, and the locking structure 7b is connected to the adjacent wall edge pieces 6 provided on the front wall 5 and the side walls 3 and 4. At the corners, hook portions 7 and 7a are formed so as to be engaged and disengageable, and a top plate 8 serving as a lid 1b is connected to one end wall, that is, the upper side of the rear wall 5a, in a bendable manner. Joining pieces 50 are provided on both sides of the end wall 5a.
Are connected so as to be foldable, and the side walls 3 and 4 and the joint piece 50 are configured to be foldable inward with the base side of the joint piece 50 joined to the side walls 3 and 4 respectively. .

Thus, the box 1 is made of one piece of paperboard as described above with reference to FIG. 4, and from the folded state, the rear wall 5a, the top plate 8 and the side walls 3, 4 are raised in the directions indicated by the arrows, and the joining pieces are formed. The 50 locking claws 52 are locked in the locking holes 51 formed in the bottom plate 2. At this time, since the side walls 3 and 4 stand up and the front wall 5 side is open, it is possible to easily insert and store the stored object from this portion into the box. Next, the flaps 3a,
When the front wall 5 is erected by bending the wall edge pieces 4a and the wall edge pieces 6 inward, it is possible to easily switch to the locking preparation posture by the locking structure 7b as shown in FIG.

In this state, the left and right hooks 7a are attached to the side walls of the side walls 3 and 4 while covering the corners near the front side of the wall edges 6 of the side walls 3 and 4. While slightly expanding 3, 4
When the hook through portion 71 formed in the
As described above, the front wall 5 can be easily and quickly engaged with the left and right hook portions 7, and the front wall 5 is supported by the side walls 3 and 4 by the locking structure 7b.
4 is connected and supported by the front wall 5 via the locking structure 7b, and can have the box rigidity against the expansion and the external force in the lateral direction.

The box 1 assembled as above is
When a plurality of pieces are stacked in a state where the contents are stored, the joining piece 50 and the flaps 3a and 4a apply the load applied to the wall edge piece 6 from above, as shown in FIGS. Since the support is carried out so as to prevent the deformation, the container can be protected while preventing the deformation of the box 1, and a large number of the boxes 1 can be stacked. In addition, by adopting the locking structure 7b as shown in the illustrated example, the box body 1 containing the contents can be removed from the wall edge piece 6 on the front wall 5 side when removing the contents.
When this is lifted upward, this portion is bent upward and the hook portion 7
a and the hook portion 7 can be easily pulled out and released without damaging the locking structure 7b. Therefore, the front wall 5 is tilted forward, and the side walls 3 and 4 are greatly expanded. And the like can be taken out smoothly without causing damage to the contents.

In the above embodiment, the box 1 is formed by cutting out a single piece of paperboard as shown in FIG. 3. However, the box 1 may be formed of a plate material such as a plastic material. It may be configured separately from the 1a side. At this time, if the length of the joining piece 50 connected to the rear wall 5a is made equal to the length of the side walls 3, 4 and the wall edge piece 6 formed on the side walls 3, 4, There are advantages such as that the box rigidity can be improved while taking out efficiently. Further, the locking structure 7b is not limited to the illustrated example, and the protrusions formed on one wall edge piece 6 can be engaged and disengaged with locking portions such as locking holes formed on the other wall edge piece 6. It is also possible to use a method such as locking the device.

[0024]

According to the foldable packaging box of the present invention configured as described above, the following effects can be obtained. (1) An end wall and left and right side walls are connected to a square or rectangular bottom plate so as to be able to bend and undulate, and a wall edge piece which can be bent inward in a substantially horizontal direction on each upper side of the end wall and the side wall. The end wall and the left and right side walls are connected and assembled into a box by a locking structure that detachably connects the adjacent wall edge pieces so that the adjacent wall edge pieces are locked. By being connected by the structure, the rigidity of the box can be improved, and the box can be assembled efficiently and easily.

(2) The end wall is formed by forming a hook portion for engaging and disengaging at the corners of adjacent wall edge pieces provided on the end wall and the side wall. The box assembly of the peripheral wall can be reliably performed with an inexpensive configuration without the need for an adhesive or the like while preventing the side wall from being expanded.

(3) Since the wall edge piece is supported by a joint piece or a bendable member provided on the end wall or the side wall so that the wall edge piece can be bent, the container is accommodated while restricting the wall edge piece from hanging down. Even in the case where a plurality of boxes are stacked, the rigidity in the vertical direction can be improved to protect the stored items.

(4) A top plate serving as a lid is connected to the upper side of one end wall so as to be bendable, and joint pieces are connected to both sides of the end wall so as to be bendable. Is joined to the side wall, and the side wall and the joining piece are configured to be foldable inward, so that the box body side and the lid side can be easily and compactly folded in an integrally formed state. In addition to this, there is an advantage that the end wall having the top plate, the side wall, and the joining piece can be erected and the box can be easily assembled with high rigidity, and the box itself can be easily distributed and stored. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a packaging box of the present invention.

FIG. 2 is a perspective view showing the opened state of the packaging box.

FIG. 3 is a development view of a packaging box.

FIG. 4 is a perspective view showing a state where the packaging box is folded.

FIG. 5 is a perspective view showing a configuration of a locking structure.

FIG. 6 is a plan view showing a locked state of the locking structure.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a side view showing a conventional packaging box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box (packaging box) 3, 4 Side wall 3a, 4a Flap 5a Rear wall (end wall) 6 Wall edge piece 7, 7a Hook part 7b Locking structure 8 Top plate 50 Joining piece 53 Joining surface 70 Oblique part 71 Hook passing part 72 hypotenuse

Claims (4)

[Claims] 1. A square or rectangular bottom plate (2) having end walls (5), (5a) and left and right side walls (3), (4) connected to each other so as to be bent and undulated, and an end wall (5). , (5a) and the upper side portions of the side walls (3), (4) are provided with wall edge pieces (6) that can be bent in a substantially horizontal direction toward the inside, and the wall edge pieces (6) adjacent to each other in the bent state described above. A foldable packaging box provided with a locking structure (7b) for connecting and fixing 6). 2. The locking structure (7b) is connected to end walls (5), (5).
a) and hook portions (7) and (7a) which are detachably engaged at corners of adjacent wall edge pieces (6) provided on the side walls (3) and (4). The foldable packaging box according to claim 1. 3. The wall edge piece (6) is connected to the end walls (5), (5a).
The foldable packaging box according to claim 1 or 2, wherein the foldable packaging box is supported by a joining piece (50) or a flap (3a) or (4a) provided to be foldable on the side wall (3) or (4) side. 4. A cover (1) is provided on the upper side of one end wall (5a).
b) A top plate (8) to be bent is continuously connected to the end wall (5a), and a joining piece (50) is connected to both sides of the end wall (5a) so as to be able to be bent, and a base side of the joining piece (50) is connected. With the side walls (3) and (4) joined, respectively,
The foldable packaging box according to claim 1, wherein the (4) and the joint piece (50) are configured to be foldable inward.