JP2006036235A - Corrugated board case and half body for assembling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To exhibit durability when a load of step stacking or the like is applied on any part of a corrugated board case without spoiling easiness of assembly of the corrugated board case. <P>SOLUTION: The corrugated board case 1 is assembled into a rectangular parallelepiped by combining a first half body 10a and a second half body 10b each consisting of a folded body of a corrugated board paper with the same shape. The first half body 10a (the second half body 10b) is equipped with two side face plate pieces 30a and 40a (40b and 30b) for lamination and one side face plate piece 21a (51b) for folding. Four side face plates 2, 3, 4 and 5 of the corrugated board case are prepared by mutually laminating the side face plate pieces 30a and 30b and 40a and 40b equipped by respective plates, and the side face plate pieces 21a and 51b for folding equipped by respective pieces are respectively folded and fixed to make respectively double structures. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a corrugated cardboard case assembled in a rectangular parallelepiped shape with corrugated cardboard and an assembly half thereof.

  Corrugated cardboard cases assembled in a rectangular parallelepiped shape are widely used as cases for packing objects to be packed such as electronic devices. There is also a corrugated cardboard case formed by combining (joining) a first half made of a corrugated cardboard folded body with a second half made of corrugated cardboard folded body. It is widely used. Such a corrugated cardboard case is preferably provided with a suitable strength when packing a heavy article or being stacked in multiple stages, and some kind of reinforcing structure is applied to improve the strength. Sometimes.

Conventionally, as described in Patent Document 1, for example, a corrugated cardboard case is known in which reinforcing portions are provided at two corners of the corrugated cardboard case. This corrugated cardboard case is provided with an extension part at the joint part of two corrugated cardboard case halves, and the extension part is bent into a prismatic shape so that prismatic reinforcing parts are formed at two corners of the cardboard case. It is formed.
JP 2002-264926 A

  However, in the corrugated cardboard box as disclosed in Patent Document 1, there are reinforcing portions only at two corner portions, and a large load is applied to the corner portions other than the corner portions or corner portions not provided with the reinforcing portions by stacking or the like. If added, there is a risk that the cardboard case will buckle due to the load. In addition, when adding such a reinforcing part, it is desirable to have a simple reinforcing structure without retrofitting of reinforcing cardboard or the like so as not to impair assembling ease of the cardboard case as much as possible.

  The present invention has been made in view of the above situation, and corrugated cardboard that can exhibit durability regardless of the portion of the corrugated cardboard case where a stacked load or the like is applied without impairing the ease of assembly of the cardboard case. An object is to provide a case and an assembly half thereof.

  A corrugated cardboard case according to claim 1 of the present invention is a corrugated cardboard case assembled into a rectangular parallelepiped shape by corrugated paper, and the four side plates of the corrugated cardboard case are at least a double structure by overlapping and / or bending the corrugated paper. It is said that it is said. According to this configuration, since all the four side plates of the cardboard case have at least a double structure, the strength of the side portion is improved, and for example, the resistance to the stacking load of the cardboard case is significantly improved. Can do.

  A corrugated cardboard case according to claim 2 of the present invention is assembled into a rectangular parallelepiped shape by combining a first half made of a corrugated cardboard folded body and a second half made of a corrugated cardboard folded body. In the formed cardboard case, each of the first half and the second half includes two overlapping side plate pieces and one folding side plate piece, and the four sides of the cardboard case When assembling the first half and the second half, the face plates are combined so that the overlapping side plate pieces included in each are overlapped with each other, and the folding side plate included in each is provided. Each piece is bent and fixed, and each has a double structure.

  According to this structure, the two side plate pieces for superimposition respectively provided in the first half body and the second half body are overlapped with each other at the time of assembly, thereby forming a double-structure side plate. Is done. Further, a double-structure side plate is also formed by folding and fixing one folding side plate provided respectively in the first half and the second half. . Accordingly, the four side plates of the corrugated cardboard case all have a double structure (reinforcement structure) formed by overlapping or folding corrugated paper.

  A corrugated cardboard case according to a third aspect of the present invention is the corrugated cardboard case according to the second aspect, wherein the first half and the second half are formed of a corrugated cardboard folded body having the same shape, A folding side plate piece connected to one side of the base body side plate piece, and first and second overlapping plates respectively connected to two sides orthogonal to the side to which the bending side plate piece is connected. A side plate piece, a bottom plate flap connected to the opposite side of the base side plate piece to which the bending side plate piece is connected, and the first overlapping side plate piece or the second overlapping side plate. A top plate flap and a bottom plate flap connected to any one side of the pieces are provided. According to this configuration, a cardboard case with a flap, in which all four side panels have a double structure (reinforcement structure), is completed simply by combining the first and second halves of the same shape. Can be made. In addition, since the first half and the second half have the same shape, the cut half and the crease can be handled by a common half.

  A corrugated cardboard case according to a fourth aspect of the present invention is the corrugated cardboard case according to the third aspect, wherein the protrusions of the side plate pieces for folding provided in the first half and the second half are provided with locking projections, and the side plate of the base body. The bottom plate flap connected to the piece is provided with a protrusion receiving portion into which the locking protrusion is inserted, and the side plate for bending is bent at the connecting portion with the side plate of the base and The stopping projection is fixed by being bent by being inserted into the projection receiving portion. According to this configuration, the side plate pieces for folding provided in the first half and the second half each have a double structure by bending due to the engagement between the locking projection and the projection receiving portion. Can be held in.

  A corrugated cardboard case according to a fifth aspect is the cardboard case according to the third aspect, wherein small flaps for insertion are connected to both sides of the top plate flap connected to one side of the first or second overlapping side plate piece. It is characterized by. According to this configuration, the dust that enters from the gap between the both side portions of the top plate flap and the side plate can be blocked by the small flap.

  An assembly half of a corrugated cardboard case according to claim 6 of the present invention is an assembly half of a corrugated cardboard case assembled into a rectangular parallelepiped shape by corrugated cardboard, and is a four-sided base side plate piece serving as a bent base, Bending side plate piece connected to one side of the base side plate piece, and first and second overlapping sides connected to two sides orthogonal to one side where the bending side plate piece is connected A face plate piece, a bottom plate flap connected to the opposite side of the base side plate piece to which the bending side plate piece is connected, and the first overlapping side plate piece or the second overlapping side plate piece. A top plate flap and a bottom plate flap connected to any one of the sides.

  7. The bottom plate flap according to claim 6, wherein a locking projection is provided at a protruding end of each of the bending side plate pieces provided in the first half and the second half, and the base side plate piece is connected to the base side plate piece. Is provided with a projection receiving portion into which the locking projection is inserted, the side plate for bending is bent at a connecting portion with the side plate of the base, and the locking projection is received by the projection receiving portion. It is preferable to be configured to be bent and fixed by being inserted into the portion (claim 7).

  Further, in the sixth aspect of the invention, it is preferable that a small flap for insertion is connected to both sides of the top plate flap connected to one side of the first or second overlapping side plate piece. (Claim 8).

  According to the corrugated cardboard case according to the first aspect, since all the four side plates of the corrugated cardboard case have at least a double structure, the strength of the side surface portion is improved, for example, the resistance to the stacked load of the corrugated cardboard case is improved. It can be improved significantly. Accordingly, when the cardboard case is transported or stored in a state where an article to be packed is contained, the side plate is less likely to buckle, and the handleability is improved.

  According to the corrugated cardboard case according to claim 2, the corrugated cardboard includes two overlapping side plate pieces and one folding side plate piece respectively provided in the first half and the second half. Since all of the four side plates of the case can be made into a side plate having a double structure, the reinforcing structure according to the present invention is provided without requiring special retrofitting cardboard retrofitting operations, that is, without compromising the ease of assembly. It is possible to construct a corrugated cardboard case.

  According to the corrugated cardboard case according to claim 3, by simply combining the first half and the second half, it is possible to complete a corrugated cardboard case with a flap in which all four side plates have a double structure. Therefore, the ease of assembly can be further improved. In addition, since the first half and the second half have the same shape, the cutting shape and the crease processing can be handled by a common half, so that the mold cost and work man-hours for creating the half, Management costs and the like can be reduced.

  According to the corrugated cardboard case according to claim 4, the side plate pieces for folding provided in each of the first half and the second half can stably hold the double structure by bending, so that the reinforcing structure Can be stabilized.

  According to the corrugated cardboard case according to the fifth aspect, the dust entering from the gap between the both sides of the top plate flap and the side plate can be blocked by the small flap, so that the corrugated cardboard case can be improved in dust resistance and covered. The protection of the package can be improved.

  According to the assembly half of the corrugated cardboard case according to claims 6 to 8, it is possible to easily assemble a corrugated cardboard case in which all of the four side plates of the corrugated cardboard case have a double structure. It becomes like this.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a corrugated cardboard case 1 according to the present embodiment. FIG. 2A is a cross-sectional view taken along line XX of FIG. 3 (a) shows an enlarged view of a portion in FIG. 1, and FIG. 3 (b) shows an enlarged view of the portion b in FIG. The corrugated cardboard case 1 has a rectangular parallelepiped shape in a top view, and has four side plates, that is, a pair of short side plates 2 and 5 which are arranged to face each other, and a pair of long sides which are similarly arranged to face each other. The side plate 3 and 4, the top plate 6, and the bottom plate 7 are included.

  As shown in FIG. 5, the corrugated cardboard case 1 has a rectangular parallelepiped by combining a first half 10a made of a corrugated paper folded body and a second half 10b similarly made of a corrugated paper folded body. Assembled into a shape. In the present embodiment, the first half 10a and the second half 10b are cardboard bent bodies having the same shape. FIG. 4 is a development view of the first half 10a (second half 10b).

  In FIG. 4, a dotted line portion indicates a bent portion (joint portion). The first half body 10a (second half body 10b) includes a base plate 20a (50b) having a quadrangular shape serving as a bent base, and one side (one side in the vertical direction of the drawing) of the base side plate 20a (50b). ) And the side plate 21a (51b) for folding and the first side plate for superposition each connected to two sides orthogonal to one side to which the side plate piece 21a (51b) is connected. The piece 30a (40b) and the second overlapping side plate piece 40a (30b) and the side plate piece 21a (51b) for bending of the base side plate piece 20a (50b) are connected to the opposite side. Bottom plate flap 71a (71b), top plate flap 60a (60b) connected to the upper side of the first overlapping side plate piece 30a (40b), and bottom plate flap 72a (7) connected to the lower side b) consisting of a.

  The top plate flap 60a (60b) and the bottom plate flap 72a (72b) may be connected to the upper and lower sides of the second overlapping side plate piece 40a (30b). Further, any one of the flaps may be separately connected. For example, the top plate flap 60a (60b) is provided on the upper side of the first overlapping side plate piece 30a (40b), The bottom plate flap 72a (72b) may be connected to the lower side of the overlapping side plate piece 40a (30b).

  4 is basically bent at a right angle (see FIG. 5), the bending side plate piece 21a (51b) is the same as the base side plate piece 20a (50b). It is folded back 180 ° to make surface contact. At the protruding end of the side plate piece 21a (51b) for bending, there is provided a locking projection 211a (511b) to the extent corresponding to the thickness of the corrugated cardboard used here. On the other hand, the bottom plate flap 71a (71b) is provided with a slit-like projection receiving portion 711a (711b) into which the locking projection 211a (511b) is inserted. This protrusion receiving part 711a (711b) is provided in the vicinity of the connecting part (crease line) with the base body side plate piece 20a (50b) in parallel with the crease line. Therefore, when the folding side plate piece 21a (51b) is folded back 180 °, the locking projection portion 211a (511b) is inserted into the projection receiving portion 711a (711b), whereby the folding side plate piece. The bending posture 21a (51b) is in contact with or close to the base plate 20a (50b).

  Small flaps 61a (61b) and 62a (62b) for insertion are connected to both sides of the top plate flap 60a (60b). The small flaps 61a (61b) and 62a (62b) serve to prevent dust from entering the cardboard case 1 as will be described later. The joint piece 8a (8b) is connected to the right side of the second overlapping side plate piece 40a (30b). The joint piece 8a (8b) is a portion used to integrally join the first half 10a and the second half 10b made of different members. Used as a bill.

  The first half body 10a and the second half body 10b, which are formed by folding the corrugated cardboard base as described above, are combined to form a rectangular parallelepiped according to the present embodiment as shown in FIG. A cardboard case 1 is configured. That is, as a result of the combination of the first half 10a and the second half 10b, the short side plates 2, 5 and the long side plates 3, 4 which are the four side plates of the corrugated cardboard case 1, Both are made of a double structure of corrugated paper.

  First, the short side plate 2 has a double structure of corrugated paper made up of a base plate 20a and a folding side plate 21a provided in the first half 10a. That is, as shown in FIG. 2A, the substrate side plate piece 20a and the bent side plate piece 21a folded back by 180 ° with respect to the substrate side plate piece 20a are overlapped. As described above, the locking protrusion 211a provided at the protruding end of the bending side plate piece 21a is inserted into the protrusion receiving portion 711a, and the folded shape is maintained. The leading edge of the locking projection 211a is in contact with or close to the upper surface of the bottom plate flap 72a. Similarly, with respect to the short side plate 5 opposed to the short side plate 2, the corrugated cardboard made up of the base plate 50b and the folding side plate 51b included in the second half 10b. It has a double structure.

  Next, for the long side surface plate 3, a first overlapping side plate piece 30a included in the first half 10a, and a second overlapping side plate piece 30b included in the second half 10b, Corrugated cardboard double structure. That is, as shown in FIG. 2B, the second overlapping side surface plate piece 30b is overlapped along the inner surface of the first overlapping side surface plate piece 30a. The lower edge of the second overlapping side plate piece 30b is in contact with or close to the upper surface of the bottom plate flap 72a. Similarly, for the long side plate 4 opposed to the long side plate 3, the first overlapping side plate piece 40b included in the second half 10b and the first half A double-layer structure of corrugated cardboard made of the second overlapping side plate piece 40a included in 10a. A second overlapping side plate piece 40a is overlapped along the inner side surface of the first overlapping side plate piece 40b.

  The width of the side plate 21a (51b) for bending is narrower than that of the base plate 20a (50a). This is because a small flap 62a (62b) portion is assigned when paper is taken, as shown in the development view of FIG. Therefore, even when the folding side plate piece 21a is folded back and overlapped with the base side plate piece 20a, portions (single portions) where the base side plate piece 20a is exposed are formed on both sides thereof.

  Therefore, in the present embodiment, as shown in FIG. 3A, the first half 10a and the second half 10b are connected to the joint piece 8a (8b) along such a single portion. They are joined together. That is, the second overlapping side plate piece 40a of the first half body 10a is joined to the bent portion W of the base side plate piece 50a of the second half body 10b and the first overlapping side plate piece 40b. The joint margin piece 8a, which is in contact with the edge and connected to the second overlapping side plate piece 40a, is superimposed on a single portion in the vicinity of the bent portion W of the base side plate piece 50a.

  On the other hand, as shown in FIG. 3B, on the side where the joint piece 8a does not exist, the base body side plate piece 50a is exposed. In this portion, the side plate is not a double structure, but even if such a gap portion exists, the strength does not decrease so much. Accordingly, in the present invention, such a single portion may exist as long as it does not cause a substantial significant decrease in strength.

  Subsequently, an assembly procedure of the cardboard case 1 according to the present embodiment will be described with reference to FIG. As a premise, as shown in FIG. 5, it is assumed that the first half 10a and the second half 10b are bent into a predetermined shape. First, as shown in FIG. 6A, the first half body 10a and the second half body 10b are opposed to each other, the first overlapping side plate piece 30a in the first half body 10a, Similarly, the first overlapping side plate piece 40b included in the second half body 10b and the first half body 10a are arranged so that the second overlapping side plate piece 30b in the half body 10b overlaps the second overlapping side plate piece 30b. Both are combined so that the 2nd overlapping side plate piece 40a provided may overlap. In FIG. 6A, when viewed from the first half 10a, the first overlapping side plate 30a is positioned on the outer side of the case, and the second overlapping side plate 40a is positioned on the inner side of the case. However, it may of course be combined so that the outside and inside of the case are reversed.

  FIG. 6B shows a state where the first half 10a and the second half 10b are completely combined. By this combination, the long side surface plate 3 is formed into a double structure by the first overlapping side surface plate piece 30a and the second overlapping side surface plate piece 30b, and the long side surface plate 4 is The overlapping side plate piece 40a and the first overlapping side plate piece 40b form a double structure. Then, the joint piece 8a provided in the first half 10a and the base side plate piece 50a of the second half 10b are brought into surface contact with each other, and both are fixed by stapling or the like. The Similarly, the joint piece 8b provided in the second half 10b and the base body side plate piece 20a of the first half 10a are fixed. Further, an adhesive tape T is affixed to the case bottom side. In this way, the first half 10a and the second half 10b are fixed and integrated.

  At this stage, the bottom plate 7 is substantially completed. That is, by combining the first half 10a and the second half 10b, the short-side bottom plate flap 71a provided in the first half 10a and the long-side bottom plate flap provided in the second half 10b. 72b and the long-side bottom plate flap 72a and the short-side bottom plate flap 71b partially overlap each other, and further, the adhesive tape T is applied along the butted portion of the long-side bottom plate flaps 72a and 72b. As a result, the bottom plate 7 is completed.

  Next, as shown in FIG. 6C, the side plate piece 21a for folding provided in the first half 10a and the side plate piece 51b for folding provided in the second half 10b are directed toward the inside of the case. Are each folded back 180 °. At this time, the locking projection 211a provided in the first half 10a is inserted into the projection receiving portion 711a, and the locking projection 511b provided in the second half 10b is inserted into the projection receiving portion 711b. (See the enlarged view attached to FIG. 6C). As a result, the short side plate 2 has a double structure by the base side plate piece 20a and the folding side plate piece 21a. From the short side plate 5, the base side plate piece 50b, and the folding side plate piece 51b. The cardboard paper has a double structure.

  Finally, after the packaged items are stored in the case, as shown in FIG. 6 (d), the top plate flaps 60a and 60b are bent toward the inside of the case, so that the rectangular parallelepiped cardboard case 1 Is completed. Thereby, the top plate 6 including the top plate flaps 60a and 60b is completed. At this time, the small flaps 61a, 62a, 61b, 62b for insertion connected to the both sides of the top plate flaps 60a, 60b are folded inside the short side plates 2, 5, respectively. The dust-proof property is improved.

As mentioned above, although embodiment was described about this invention, it is not limited to this, A various deformation | transformation implementation is possible. For example, the following aspects (a) to (d) can be adopted.
(A) In the above embodiment, the first half 10a and the second half 10b are described as having the same shape. However, they may not be the same shape. For example, the top plate flap 60b provided in the second half 10b in the above embodiment can be connected to the second overlapping side plate piece 40a provided in the first half 10a. In this case, the first side plate piece 40b and the second side plate piece 30b for superposition provided in the second half 10b are both positioned on the inside of the case so that the base side plate piece 50b is positioned inside the case. The lateral width may be set shorter than the base side plate piece 20a of the first half 10a by the paper thickness of the side plate piece. However, if the first half 10a and the second half 10b have the same shape as in the present embodiment, the cut shape of the corrugated cardboard and the crease processing can be handled by a common half. It is possible to reduce mold costs, work man-hours, management costs, and the like for creation.

  (B) In the above embodiment, the side plate pieces 21a, 51b for bending are connected to the short side plate 2, 5 side, but this is arranged on the long side plate 3, 4 side. Also good. The shape of the cardboard case 1 may be a rectangular parallelepiped, and may be any shape such as an honest cuboid, a deep bottom cuboid, and a shallow shallow cuboid.

  (C) In the above embodiment, the joint pieces 8a and 8b are provided. However, this is omitted, and the distal end portion of the second overlapping side plate piece 40a provided in the first half 10a, and You may make it staple on the front-end | tip part of the 2nd overlap side plate piece 30b with which the 2nd half body 10b is provided.

  (D) In the above-described embodiment, the side plates 2, 3, 4 and 5 are both doubled by overlapping and folding corrugated paper. . For example, a side plate piece for bending is connected to the projecting ends of the first side plate piece 30a (40b) for superimposing and the side plate piece 40a (30b) for second superposition, and is bent 180 ° when combined. The long side plates 3 and 4 can have a triple structure.

1 is a perspective view showing a cardboard case 1 according to an embodiment of the present invention. 1A is a sectional view taken along line XX in FIG. 1, and FIG. 1B is a sectional view taken along line YY in FIG. (A) is an enlarged view of part a in FIG. 1, and (b) is an enlarged view of part b in FIG. FIG. 3 is a development view of an assembly half constituting the corrugated cardboard case 1. 2 is a perspective view showing a state before the combination of the first half 10a and the second half 10b, which are the assembly halves constituting the cardboard case 1. FIG. FIG. 4 is a perspective view showing an assembly procedure of the cardboard case 1.

Explanation of symbols

1 Cardboard case 2, 5 Short side plate
3, 4 Long side surface plate 6 Top plate 7 Bottom plate 10a First half (assembly half)
10b Second half (assembly half)
20a, 50b Substrate side plate pieces 21a, 51b Bending side plate pieces 211a, 511b Locking projections 30a, 40b First overlapping side plate pieces 40a, 30b Second overlapping side plate pieces 60a, 60b Top plate flaps 61a, 61b, 62a, 62b Small flaps 71a, 71b, 72a, 72b Bottom plate flaps 711a, 711b Projection receiving portions

Claims (8)

In a corrugated cardboard case assembled in a rectangular parallelepiped shape with corrugated paper,
The corrugated cardboard case is characterized in that the four side plates of the corrugated cardboard case have at least a double structure by overlapping and / or folding corrugated paper. In a corrugated cardboard case assembled in a rectangular parallelepiped shape by combining a first half made of a folded body of cardboard paper and a second half made of a folded body of cardboard paper,
Each of the first half and the second half includes two overlapping side plate pieces and one folding side plate piece,
The four side plates of the corrugated cardboard case are combined so that the overlapping side plate pieces included in the first half and the second half are overlapped with each other, The corrugated cardboard case is characterized in that each of the side plate pieces for folding provided in the above is bent and fixed to form a double structure. The first half and the second half are made of folded corrugated paper of the same shape,
A four-sided substrate side plate piece to be a bent substrate;
A side plate piece for bending connected to one side of the base side plate piece;
First and second overlapping side plate pieces connected to two sides orthogonal to one side where the bending side plate pieces are connected;
A bottom plate flap connected to the opposite side of the base side plate piece connected to the side plate piece for bending;
The top plate flap and the bottom plate flap connected to one side of either the first overlapping side plate piece or the second overlapping side plate piece, according to claim 2. Cardboard case. A locking projection is provided at the protruding end of each of the bending side plate pieces provided in the first half and the second half, and the bottom plate flap connected to the base side plate piece is provided with the locking plate. A protrusion receiving portion into which the protrusion is inserted,
4. The bending side plate piece is bent at a connecting portion with the base side plate piece, and the locking projection is inserted into the projection receiving portion to be bent and fixed. The cardboard case described.   4. A cardboard case according to claim 3, wherein small flaps for insertion are connected to both sides of the top plate flap connected to one side of the first or second overlapping side plate piece. . A half body for assembling a cardboard case assembled into a rectangular parallelepiped shape by corrugated paper,
A four-sided substrate side plate piece to be a bent substrate;
A side plate piece for bending connected to one side of the base side plate piece;
First and second overlapping side plate pieces connected respectively to two sides orthogonal to one side where the side plate pieces for bending are connected;
A bottom plate flap connected to the opposite side of the base side plate piece connected to the side plate piece for bending;
For assembling a cardboard case, comprising a top plate flap and a bottom plate flap connected to one side of either the first overlapping side plate piece or the second overlapping side plate piece. Half body. A locking projection is provided at the protruding end of each of the bending side plate pieces provided in the first half and the second half, and the bottom plate flap connected to the base side plate piece is provided with the locking plate. A protrusion receiving portion into which the protrusion is inserted,
7. The bending side plate piece is bent at a connecting portion with the base side plate piece, and the locking projection is inserted into the projection receiving portion to be bent and fixed. The assembly half of the cardboard case described. 7. The cardboard case according to claim 6, wherein small flaps for insertion are connected to both sides of the top plate flap connected to one side of the first or second overlapping side plate piece. Half for assembly.

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