JP7365657B2 - Double side wall assembly box - Google Patents

Description

The present invention relates to a technology for a double side wall assembly box, and more specifically, the present invention relates to a double side wall assembled box, and more specifically, a bottom wall that is quadrangular in plan view, an outer wall connected to the four peripheries of the bottom wall, and a frame piece in the form of a narrow band on the outer wall. The present invention relates to a double side wall assembled box formed by assembling base paper provided with an inner wall that is continuous with the inner wall and a locking piece that is continuous with the outside of the inner wall to form a double side wall around the bottom wall.

Conventionally, a bottom wall that is rectangular in plan view, an outer wall that is continuous to the four peripheries of the bottom wall, an inner wall that is continuous to the outer wall via a narrow strip-shaped frame piece, and a wall that is continuous to the outside of the inner wall A double side wall assembly box is known in which a double side wall with a narrow band (frame) is formed around the bottom wall by assembling base paper provided with locking pieces. This double side wall assembly box is assembled by engaging the locking pieces on the front, rear, left and right sides, so there is no need for gluing, and the four peripheries of the bottom wall are partially double walls, so it has the advantage of being able to maintain strength. be.

On the other hand, in double side wall assembled boxes, there is a space inside the double side wall formed by the outer wall and the inner wall, so the inner wall expands outward when pressed by the contents. As a result, the double side wall may be deformed by forming an opening (gap) at the corner or bending the inner wall. Therefore, as disclosed in Patent Document 1, for example, a conventional double side wall assembled box has a plurality of loading materials mainly consisting of corrugated cardboard sheets arranged in each space of the double side wall. As disclosed in Patent Document 2, the pad member includes a bottom plate that covers the bottom wall and a side plate that stands upright from the bottom plate and is disposed in the space of the double side wall. A configuration is currently being proposed.

However, in the configuration of the conventional double side wall assembly box described above, the rigidity of the double side wall is increased by placing the side plate of the filler or pad member in the space of the double side wall, and the above-mentioned Although it can be expected to prevent deformation of the inner wall, the effect of preventing openings (gaps) at the corners was not sufficient. There was a problem in that the corners opened and deformed due to the influence of objects, resulting in poor appearance.

Japanese Patent Application Publication No. 10-72026 Japanese Patent Application Publication No. 4-311446

Therefore, the present invention solves the above-mentioned conventional problems regarding a double side wall assembled box, and provides a double side wall assembly that reliably prevents deformation of the double side walls regardless of the condition of the stored items and has excellent appearance quality. The purpose is to provide boxes.

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

That is, in claim 1, a bottom wall having a rectangular shape in a plan view, an outer wall connected to four peripheries of the bottom wall, and an inner wall connected to the outer wall via a narrow strip-shaped frame piece. , a double side wall assembled box formed by assembling base paper provided with a locking piece connected to the outside of the inner wall to form a double side wall around the bottom wall, a bottom plate covering the bottom wall; and a side plate disposed in a space of a double side wall formed by the outer wall and the inner wall, the side plate having a fold line on both opposing sides of the bottom plate. a first side plate that is arranged in a continuous manner through a crease line, and is arranged in a space of a double side wall that stands upright with respect to the bottom plate and is opposed to the bottom plate; When the first side plate is erected, the first side plate is bent to straddle the corner portion where the outer wall and the inner wall are adjacent to each other , and is adjacent to the space of the double side wall where the first side plate is arranged. a second side plate disposed in the space of the double side wall, the second side plate being connected to the short side of the adjacent outer wall of the base paper, and folded during assembly to form the same double side wall. It is located inside the folded side arranged in the space of the side wall, is connected to the short side of the inner wall of the base paper, and is bent at the time of assembly and is arranged in the space of the same double side wall. It is placed in between .

In claim 2, the side plate is connected to the remaining opposing sides of the bottom plate via a fold line, is erected with respect to the bottom plate, and is disposed in the space of the double side wall together with the second side plate. It has a third side plate.

According to a third aspect of the present invention , the second side plate is formed in such a shape that the opposing abutting edges do not abut against each other when placed in the space of the double side wall.

According to a fourth aspect of the present invention , the side plate is formed with a bending groove having one or more connecting portions at a position corresponding to the rear surface side of the fold line.

As an effect of the present invention, it is possible to reliably prevent deformation of the double side walls regardless of the state of the stored items, and to obtain a double side wall assembled box with excellent appearance quality.

1 is a perspective view showing the overall structure of a double side wall assembled box according to an embodiment of the present invention. FIG. 2 is a plan view of FIG. 1 as well. FIG. 3 is a developed view of base paper constituting the main body member. FIG. 3 is a developed view of base paper constituting a reinforcing member. 5 is a developed view showing the back side of the base paper of FIG. 4. FIG. FIG. 5 is a perspective view of the base paper of FIG. 4 superimposed on the base paper of FIG. 3; FIG. 7 is a perspective view showing a state in which left and right inner walls and the like of the base paper constituting the main body member in FIG. 6 are bent. FIG. 8 is a perspective view showing a state in which the front, rear, left, and right outer walls of the base paper constituting the main body member in FIG. 7 are erected; It is an enlarged plan view of a double side wall assembly box. FIG. 7 is a developed view of a base paper constituting a reinforcing member of another example.

Next, a mode for carrying out the invention will be described. In the following embodiments, the arrow X direction in the figures is the front-rear direction, and the arrow Y direction is the up-down direction.

As shown in FIGS. 1 and 2, the double side wall assembly box 1 of this embodiment is made by folding base paper A along a predetermined crease line and forming a double side wall assembly box 1 with a narrow band (frame) around the bottom wall 20. A rectangular parallelepiped main body member 2 with heavy side walls and an upward opening and the base paper B are folded along a predetermined fold line to cover the bottom wall 20 of the main body member 2 and fill the spaces 3 and 4 of the double side walls. A reinforcing member 5 is provided.

As the material for base paper A and base paper B, materials having a practical level of strength and thickness such as cardboard or cardboard are used as appropriate. Known corrugated paperboard made of core paper is used.

As shown in FIG. 3, the base paper A constituting the main body member 2 has a bottom wall 20 that is rectangular in plan view, and an outer side that is connected to the four peripheries of the bottom wall 20 via fold lines 32, 32, 36, and 36. Walls 21, 21, 25, 25, and narrow strip-shaped picture frame pieces 22, 22, 26, 26 that are connected to the outside of the outer walls 21, 21, 25, 25 via fold lines 33, 33, 37, 37. and inner walls 23, 23, 27, 27 connected to the outside of the frame pieces 22, 22, 26, 26 via fold lines 34, 34, 38, 38, and inner walls 23, 23, 27, 27. Locking pieces 24, 24, 28, 28, etc., which are connected to each other via fold lines 35, 35, 39, 39, are provided on the outside of the holder.

Left and right outer walls 21 are connected to the left and right long sides of the bottom wall 20 via a fold line 32, and left and right frame pieces 22 are connected to the outside of the outer wall 21 via a fold line 33. Left and right inner walls 23 are connected to the outside of the piece 22 via a fold line 34, and a locking piece 24 is connected to the outside of the inner wall 23 via a fold line 35. Further, front and rear outer walls 25 are connected to the front and rear short sides of the bottom wall 20 via a fold line 36, and front and rear frame pieces 26 are connected to the outside of the outer wall 25 via a fold line 37. Front and rear inner walls 27 are connected to the outside of the frame piece 26 via a fold line 38, and front and rear locking pieces 28 are connected to the outside of the inner wall 27 via a fold line 39.

In addition, tabs 29 are connected to the front and rear of the inner wall 23 via a fold line 40, and folded pieces 30 are connected to the front and back of the outer wall 21 via a fold line 41, and the outer wall Folded pieces 31 are connected to each other on the left and right sides of 25 via a fold line 42, and folded pieces 30 and 31 are connected to each other via a diagonal fold line 43.

As shown in FIGS. 4 and 5, the base paper B constituting the reinforcing member 5 is connected to the bottom plate 50, which is rectangular in plan view, through fold lines 54 and 54 on the long sides, which are the left and right opposing sides of the bottom plate 50. The first side plates 51 and 51 that are installed, the second side plates 52 and 52 that are connected to the short sides that are opposite sides of the first side plate 51 via the crease line 55, and the remaining front and rear of the bottom plate 50. Third side plates 53 , 53 are provided on opposite short sides of the , which are connected to each other via fold lines 55 , 55 .

The bottom plate 50 has the same shape as the bottom wall 20 of the base paper A described above, and is formed to be smaller than the bottom wall 20, and the first side plate 51 is arranged continuously along the long side of the bottom plate 50, and It has the same shape as the left and right outer walls 21 and inner walls 23 of the base paper A, and is formed so that the length in the left and right direction (arrow Y direction) is the same or smaller than the left and right outer walls 21 and inner walls 23. In this embodiment, the base paper B is formed so that the bottom plate 50 and the first side plate 51 are slightly smaller than the bottom wall 20 and the outer wall 21 of the base paper A when stacked on the base paper A (Fig. 6 reference).

The second side plate 52 is connected to the front and rear short sides of the first side plate 51, and its length in the left-right direction (direction of arrow Y) is the length of the front and rear outer walls 25 and inner walls 27 in the front-rear direction (direction of arrow X). It is formed into a rectangular shape in a plan view so that it is the same as or smaller than the diameter. The third side plate 53 is connected to the center position of the front and rear short sides of the bottom plate 50 in the left-right direction (direction of arrow Y), and has a length in the front-rear direction (direction of arrow X) equal to that of the front and rear outer walls 25 and inner walls 27. It is formed into a rectangular shape in plan view so that the length is the same as or smaller than the length in the front-rear direction (arrow X direction).

Fold lines 54, 55, and 56 are formed on the front side of base paper B (paper side in FIG. 4), and one is formed on the back side (paper side in FIG. 5) of these fold lines 54, 55, and 56. Alternatively, bent grooves 57, 58, and 59 having a plurality of connecting portions 57a, 58a, and 59a are formed. The bending grooves 57, 58, and 59 are grooves cut into the back paper (back liner) of the base paper B, which is corrugated paper, and do not reach the cover (front liner), and connect portions 57a, 58a, and 59 at predetermined locations. 59a. As will be described later, in the base paper B, when the first side plate 51, second side plate 52, and third side plate 53 are bent along the fold lines 54, 55, and 56, the bending grooves 57, 58, and 59 are formed. The connecting portions 57a, 58a, and 59a are also folded together with the cover (front liner), or are broken and only the cover (front liner) is folded.

As shown in FIGS. 1, 6 to 8, the double side wall assembly box 1 of this embodiment is assembled into one body with the above-mentioned base paper A and base paper B stacked on top of each other. First, the bottom wall of base paper A is 20 and the bottom plate 50 of base paper B are superimposed and adhered (see FIG. 6), the left and right inner walls 23, 23 of base paper A are bent so as to wrap around the first side plates 51, 51 of base paper B, and the concrete Specifically, the left and right frame pieces 22, 22 and inner walls 23, 23 of base paper A are valley-folded along fold lines 33, 34, respectively (hereinafter, the left and right frame pieces 22, 22 and inner walls 23, 23 of base paper A and base paper B are folded when viewed from above with opened , folding so that the fold is high is called a "mountain fold," and folding so that the fold is low is called a "valley fold." (See Figure 7).

Next, with the left and right frame pieces 22, 22, inner walls 23, 23, and locking pieces 24, 24 of the original paper A being folded, the left and right outer walls 21, 21 are valley-folded along the crease line 32. When the outer walls 21, 21 are bent vertically, the first side plates 51, 51 of the base paper B are simultaneously valley-folded along the fold line 57, and are erected vertically (see FIG. 8). At this time, at the same time, the front and rear outer walls 25, 25 of the base paper A are valley-folded along the fold line 36 and stand vertically, and when the outer walls 25, 25 are folded, the third side plates 53, 53 of the base paper are simultaneously valley-folded along the fold line 59 and stand up vertically.

Furthermore, in the above case, the folded pieces 30, 30 that are connected to the left and right outer walls 21, 21 of the base paper A are valley-folded along the fold line 41, and are connected to the front and rear outer walls 22, 22. The folded pieces 31 and 31 are valley-folded along the fold line 42, and each folded piece 30 and folded piece 31 are folded and mountain-folded along the fold line 43, and the second side plate 52 of the base paper B is folded. 52 are simultaneously valley-folded along the crease line 58. Furthermore, by bending the folding pieces 30 and 31 and the second side plate 52 of the base paper B, the tabs 29 and 29 that are connected to the left and right inner walls 23 and 23 of the base paper A are also tagged along the fold line 40. (See Figure 8).

Then, with the outer walls 21, 21, 25, and 25 of base paper A and the first and third side plates 51 and 53 of base paper B standing upright, the front and rear frame pieces 26, 26 of base paper A are aligned along the fold line 37. Then, the front and rear inner walls 27, 27 are further valley-folded along the fold line 38 so as to wrap around the second side plate 51 and third side plate 52 of the base paper B together with the edge piece 29 and the folded sides 30, 31. . The front and rear locking pieces 28, 28 of the base paper A come into contact with the top surface of the bottom plate 50 of the base paper B, and are mountain-folded along the fold line 39. By inserting the reinforcing member 5 into the main body member 2 and pressing the end portion from above, a double side wall assembled box 1 is obtained (see FIG. 1).

As shown in FIG. 1, FIG. 2, and FIG. A double side wall having spaces 3 and 4 is formed, and an ear piece 29 and folded sides 30 and 31 are accommodated in the front and rear spaces 4 and 4. The double side wall assembled box 1 has the front and rear inner walls 27 and 28, respectively, by pressing the ends of the front and rear locking pieces 28, 28 from above at the ends of the left and right locking pieces 24, 24 in the main body member 2. 27 does not rotate upward and open to its original state, and the ear piece 29 is pressed by the front and rear inner walls 27, 27, so that the adjacent outer walls 21, 25 on the front, rear, left and right sides or the inner wall The corner portions 23 and 27 that are adjacent to each other are configured so as not to open and create a gap.

In the reinforcing member 5 incorporated into the main body member 2, a first side plate 51 is accommodated in the left and right spaces 3 of the double side wall formed in the main body member 2, and a second side plate 52 and a third side plate are accommodated in the front and rear spaces 4. A side plate 53 is housed therein. The first side plate 50 is arranged at a distance between the outer wall 21 and the inner wall 23 that constitute a double side wall along the front-rear direction (arrow X direction) of the left and right space portions 3 . Further, the second side plate 51 and the third side plate 53 are arranged at a distance between the outer wall 25 and the inner wall 27 forming a double side wall along the left-right direction (arrow Y direction) of the front and rear space 4.

In particular, the second side plate 52 is bent from the short side of the first side plate 51 disposed in the left and right spaces 3 to form a corner portion of the double side wall assembled box 1, that is, the adjacent outer walls 21 and 25 on the front, rear, left and right sides. It is arranged in the front and rear spaces 4 so as to straddle adjacent parts of the inner walls 23 and 27, and is located inside the folded pieces 30 and 31 in the front and rear spaces 4. 30 and 31 and the ear piece 29. Further, the second side plate 52 is formed in a shape such that it does not come into contact with the third side plate 53 when the opposing butt edges are arranged in the left and right spaces 3 of the double side wall, and have a predetermined spacing. It is arranged as follows.

As described above, the double side wall assembled box 1 of this embodiment has a bottom wall 20 that is rectangular in plan view, outer walls 21 and 25 connected to the four peripheries of the bottom wall 20, and outer walls 21 and 25. A base paper A is assembled, which is provided with inner walls 23 and 27 connected to each other via narrow strip-shaped frame pieces 22 and 26, and locking pieces 24 and 28 connected to the outside of the inner walls 23 and 27. In the double side wall assembly box 1 in which a double side wall is formed around the bottom wall 20, a bottom plate 50 that covers the bottom wall 20, and a double side wall formed by the outer walls 21 and 25 and the inner walls 23 and 27. The reinforcing member 5 is provided with side plates 51 and 52 arranged in the spaces 3 and 4, and is connected to both opposing sides of the bottom plate 50 via a crease line 54, and is erected with respect to the bottom plate 50. The first side plate 51 is arranged in the left and right spaces 3 of the opposing double side walls, and the first side plate 51 is connected to both opposing sides of the first side plate 51 via a fold line 45, and the first side plate 51 is erected. and a second side plate 52 which is bent in the same state and arranged in the space 4 before and behind the adjacent double side wall, thereby reliably preventing deformation of the double side wall regardless of the state of the stored items. As a result, an assembled box with excellent appearance quality can be obtained.

That is, in the double side wall assembled box 1 of this embodiment, the reinforcing member 5 is incorporated into the main body member 2, the first side plate 51 is arranged in the left and right spaces 3, and the second side plate 52 is arranged in the front and rear spaces 4. By arranging the double side walls, the rigidity of the double side walls is increased, and the inner walls 23 and 27 will not bend even if stress is applied to spread the inner walls 23 and 27 outward due to being pressed by a stored object, etc. In addition, the first side plate 51 and the second side plate 52 are arranged so as to straddle the corner portions where the adjacent outer walls 21 and 25 and the inner walls 23 and 27 are adjacent to each other. Therefore, even if the stored items are heavy and packed tightly, the corner portions are prevented from opening and deforming due to the influence of the stored items, and the appearance quality is not impaired.

In particular, the double side wall assembled box 1 of this embodiment is connected to the remaining opposite sides of the bottom plate 50 via the fold line 56, and is erected with respect to the bottom plate 50, and has a double side wall together with the second side plate 51. Since the third side plate 52 is disposed in the front and rear space 4, the second side plate 52 and the third side plate 53 further increase the rigidity of the front and rear inner walls 27, and prevent the inner walls 27 from bending. This can reliably prevent deformation.

Further, the second side plate 52 is connected to the short sides of the adjacent outer walls 21 and 25 of the base paper A, and the second side plate 52 is connected to the short sides of the adjacent outer walls 21 and 25 of the base paper A, and the second side plate 52 is connected to the folded sides 30 and 31 that are folded during assembly and arranged in the space 4 before and after the double side wall. is located on the inside, and is connected to the short side of the inner wall 23 of the base paper A, and is arranged between the tabs 29 that are bent during assembly and arranged in the space 4 on the front and rear sides of the double side wall. Even if stress is exerted on the inner walls 23 and 27 to expand outward due to the influence of the stored items, the folded edges 30 and 31 folded by the second side plate 52 are reliably prevented from being opened, and the corner It is possible to reliably prevent the portion from opening and deforming.

Moreover, since the second side plate 52 is formed in such a shape that the opposing abutting edges are placed in the space 4 before and after the double side wall and do not come into contact with anything else, external force is applied to the double side wall assembled box 1. Even if the double side wall is bent or twisted due to the double side wall, the second side plates 52 do not interfere with each other in the front and rear space 4, and the rigidity of the double side wall can be maintained. .

In addition, the side plates 51, 52, and 53 are formed with bending grooves 57, 58, and 59 on the back side of the fold lines 54, 55, and 56, and have connecting portions 57a, 58a, and 59a that break when bent. The side plates 51, 52, 53 can be easily bent along the bending lines 54, 55, 56 at the grooves 57, 58, 59, and the side plates 51, 52, 53 can be easily bent at the connecting parts 57a, 58a, 59a. Since the flat state at the time of unfolding (original paper B) can be maintained without vertical variation, the double side wall assembled box 1 can be assembled easily and reliably.

Note that the configuration of the double side wall assembled box 1 is not limited to the above-described embodiment, and various changes can be made without departing from the purpose of the present invention.

That is, in the double side wall assembled box 1 of the above-described embodiment, a configuration has been described in which the third side wall 53 is provided as the reinforcing member 5. However, unlike the first side wall 51 and the second side wall 52, the third side wall 53 is not necessarily provided. This is not an essential configuration, and, for example, a configuration without the third side wall may be used, as in base paper B of another embodiment shown in FIG. 10. In such a case, by bending the second side wall 52, only the second side wall 52 is arranged at a distance between the outer wall 25 and the inner wall 27 forming a double side wall along the left-right direction of the front and rear space 4. , and the opposing abutting edges are arranged in the front and rear spaces 4 and are configured in a shape that does not come into contact with anything else.

1 Double side wall assembly box 2 Main body member 3 Space part 4 Space part 5 Reinforcement member 20 Bottom wall 21, 25 Outer wall 22, 26 Frame piece 23, 27 Inner wall 24, 28 Locking piece 29 Ear piece 30, 31 Folding piece 32-43 Fold line 50 Bottom plate 51 First side plate 52 Second side plate 53 Third side plate 54-56 Fold line 57-59 Bending groove A Base paper B Base paper

Claims (4)

A bottom wall that is rectangular in plan view, an outer wall that is continuous to the four peripheries of the bottom wall, an inner wall that is continuous to the outer wall via a narrow strip-shaped frame piece, and an inner wall that is continuous to the outside of the inner wall. In a double side wall assembled box formed by assembling base paper provided with a locking piece to form a double side wall around the bottom wall,
comprising a reinforcing member provided with a bottom plate covering the bottom wall and a side plate disposed in a space of a double side wall formed by the outer wall and the inner wall,
The side plate is
a first side plate that is connected to both opposing sides of the bottom plate via a fold line, and is arranged in a space of a double side wall that stands upright from the bottom plate and faces the bottom plate;
The first side plate is connected to opposite sides of the first side plate via a fold line, and is bent across a corner portion that is an adjacent portion of the outer wall and the inner wall while the first side plate is standing upright . a second side plate arranged in a space of another double side wall adjacent to the space of the double side wall where the first side plate is arranged;
It has
The second side plate is connected to the short side of the adjacent outer wall of the base paper, and is located inside the folded side that is folded during assembly and placed in the space of the same double side wall, and is on the inside of the base paper. It is connected to the short side of the wall, and is placed between the ears that are bent during assembly and placed in the space of the same double side wall.
A double side wall assembly box characterized by: The side plate includes a third side plate that is connected to the remaining opposite sides of the bottom plate via a fold line, stands upright from the bottom plate, and is arranged in the space of the double side wall together with the second side plate. The double side wall assembled box according to claim 1, comprising: 3. The double side wall assembled box according to claim 1, wherein the second side plate is formed in such a shape that the opposing abutting edges are arranged in the space of the double side wall and do not come into contact with anything else. The double side wall assembly according to any one of claims 1 to 3, wherein the side plate is formed with a bending groove having one or more connecting parts at a position corresponding to the rear side of the fold line. Box.

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