JP6053747B2 - Packaging box assembly structure - Google Patents

Description

  In the present invention, the first to fourth bottom plates are connected to the lower ends of the first to fourth side plates constituting the rectangular cylindrical side walls of the packaging box, respectively, and the first to fourth bottom plates are connected to the first to fourth plates. A flat bottom wall portion of the packaging box is formed by bending with respect to the lower end of the side plate, and the first and third bottom plates facing each other among the first to fourth bottom plates are respectively connected via a folding line. The present invention relates to an assembly structure of a packaging box, in which a partition plate and a second partition plate are connected, and an internal space of the packaging box is partitioned into two by the first partition plate and the second partition plate.

  Patent Document 1 below discloses that a packaging box assembled from a single box blank includes a partition plate that divides the internal space into two.

  4 and 5 of Patent Document 1 includes the four side plates 11, 12, 13, and 14 that form a square tube, and the upper end of one of the side plates 11 facing each other. And the connecting plate 52, the connecting plate 54 and the partition plate 56 are connected in series to the upper end of the other side plate 12, the connecting plate 52 is placed along the back surface of the side plate 12, and the connecting plate 54 is connected to the bottom. In a state along the back surface of the flap 22, the partition plate 56 is raised from the bottom flap 22 to partition the internal space of the packaging box into two.

  Moreover, what is described as an embodiment in FIGS. 1 to 3 of Patent Document 1 includes four side plates 11, 12, 13, and 14 constituting a rectangular tube, and one of the side plates 11 facing each other. The bottom flaps 21 and 22 are connected to the lower ends of the other side plate 12, and the partition plates (projections) 30 and 30 are connected to the bottom flaps 21 and 22, respectively. The partition plates 30 and 30 are connected to the bottom flaps 21 and 22, respectively. The internal space of the packaging box is divided into two by being raised from the side.

JP-A-9-110031

  However, in the prior art described in Patent Document 1, the partition plate 56 is not directly connected to the side plate 12, and the partition plate 56 is connected to the side plate 12 via the joining plate 52 and the connecting plate 54. Therefore, there is a problem that the box blank is enlarged by the amount of the joining plate 52 and the connecting plate 54, and the yield of the corrugated cardboard sheet as a material is deteriorated.

  Moreover, what is described as an embodiment in Patent Document 1 is that the partition plates 30, 30 are connected to the bottom flaps 21, 22 only on one side (folding lines 29, 29). There is a problem that the rigidity of the partition plate 30, 30 is easily lowered due to being pushed by the stored article.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to increase the rigidity of a partition plate without reducing the yield of a material in a packing box integrally including a partition plate that partitions an internal space into two. .

In order to achieve the above object, according to the first aspect of the present invention, the first to fourth bottom plates are connected to the lower ends of the first to fourth side plates constituting the rectangular tubular side wall portion of the packaging box. The first to fourth bottom plates are bent with respect to the lower ends of the first to fourth side plates to form a flat bottom wall portion of the packaging box, and are opposed to each other among the first to fourth bottom plates. A first partition plate and a second partition plate are connected to the first and third bottom plates via folding lines, respectively, and the internal space of the packaging box is partitioned into two by the first partition plate and the second partition plate. An assembly structure of a packaging box, wherein the first partition plate and the second partition plate each include a second contact surface connected to the fold line, and a first contact surface connected to the second contact surface, The second contact surface of the first partition plate is in surface contact with the inner surface of the third side plate and It said second contact surface of the second partition plate is in surface contact with the inner surface of the first side plate, the first contact surface each other are assembled structure of the packaging box characterized by mutual surface contact is proposed.

According to the invention described in claim 2, in addition to the first aspect, before Symbol fold line the second contact surface of the first partition plate for connecting said third plate and said fourth plate A packaging box comprising: an edge to be abutted, wherein the second contact surface of the second partition plate includes an edge to be abutted against a fold line connecting the first side plate and the second side plate. An assembly structure is proposed.

According to the invention described in claim 3 , in addition to the configuration of claim 1 or claim 2 , the first contact surface of the first partition plate and the second partition plate includes the first side plate and A packaging box assembly structure is proposed, which is inclined with respect to the third side plate.

According to the invention described in claim 4, in addition to the configuration of claim 3, the first partition plate and the second partition plate are respectively connected to the first to third wall portions via two broken lines. It is divided | segmented, It extends substantially perpendicularly with respect to the said 1st side plate and the said 3rd side plate between the 1st wall part used as the said 2nd contact surface, and the 3rd wall part used as the said 1st contact surface. An assembly structure of a packaging box characterized in that the second wall portion is arranged is proposed.

  The mountain fold lines 18 and 20 of the embodiment correspond to the fold lines of the present invention, the mountain fold lines 30 and 31 of the embodiments correspond to the fold lines of the present invention, and the first wall portion of the embodiment. 32a and 33a correspond to the second contact surface of the present invention, and the third wall portions 32c and 33c of the embodiment correspond to the first contact surface of the present invention.

According to the structure of Claim 1, a packing box comprises the 1st-4th bottom plate which comprised the side wall part of a square cylinder shape by the 1st-4th side plate, and was respectively connected to the lower end of the 1st-4th side plate. The interior space is divided into two parts by first and second partition plates that constitute a flat bottom wall portion and are connected to the first and third bottom plates via folding lines, respectively. The first partition plate (32) and the second partition plate (33) each include a second contact surface connected to the fold line and a first contact surface connected to the second contact surface, and assemble a packaging box In this state, the first contact surfaces provided on the first and second partition plates are in surface contact with each other, so that the first and second partition plates reinforce each other to increase rigidity, and the inside of the packaging box It is possible to reliably prevent the stored article from moving. Moreover, since the first and second partition plates are directly connected to the first and third bottom plates, there is no need for a special plate material for connecting the first and second partition plates and the first and third bottom plates. The yield of the material is improved by that amount, and the cost can be reduced. Also, the second contact surface of the first partition plate is in surface contact with the inner surface of the third side plate, the second contact surface of the second partition plate is in surface contact with the inner surface of the first side plate, the first, second partition By transmitting the load that the plate receives from the stored article to the first and third side plates from the second contact surface and supporting it, the rigidity of the first and second partition plates can be further increased.

Moreover, according to the structure of Claim 2 , the 2nd contact surface of a 1st partition plate is equipped with the edge butt | matched to the fold line which connects a 3rd side plate and a 4th side plate, The 2nd contact surface of a 2nd partition plate Is provided with an edge abutted against a fold line connecting the first side plate and the second side plate, so that the second contact surfaces of the first and second partition plates are prevented from sliding relative to the first and third side plates. The rigidity of the first and second partition plates can be further increased.

According to the configuration of the third aspect, the first contact surfaces of the first partition plate and the second partition plate are inclined with respect to the first side plate and the third side plate. Can be stored in the inside of the packing box, and the packing box can be downsized to reduce the cost.

The perspective view of the packaging box of the assembled state. The figure which looked at the box blank of the packaging box from the surface side. FIG. 3 is a view in the direction of arrows 3 in FIG. FIG. 4 is a view in the direction of arrows 4 in FIG. 1 (a bottom view of the packaging box). Explanatory drawing of the assembly process of a packaging box (the 1). Explanatory drawing of the assembly process of a packaging box (the 2). Explanatory drawing of the folding process of a packing box.

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

  As shown in FIG. 2, the box blank 12 of the rectangular parallelepiped packing box 11 (see FIG. 1) of the present embodiment is composed of a single sheet obtained by cutting a corrugated cardboard as a material into a predetermined shape by pressing. . FIG. 1 shows the surface of the box blank 12 (surface constituting the outer surface of the packing box 11), and a plurality of fold lines for bending each surface are pressed therein. A fold line indicated by a broken line is a mountain fold line that is bent so that the front side is convex, and a fold line indicated by a two-dot chain line is a valley fold line that is bent so that the back side is convex. The hatched portion indicates a portion to be bonded at the time of assembly.

  The box blank 12 includes a first side plate 13, a second side plate 14, a third side plate 15, a fourth side plate 16, and a first joining piece 17 that are continuous in series, and the first side plate 13 and the second side plate 14 are peaks. The second side plate 14 and the third side plate 15 are connected by a mountain fold line 19, the third side plate 15 and the fourth side plate 16 are connected by a mountain fold line 20, and the first side plate 13 and the first side plate 13 are connected by a fold line 18. The joining pieces 17 are connected by a mountain fold line 21.

  The first side plate 13 and the third side plate 15 have the same rectangular shape and face each other in the assembled state, and the second side plate 14 and the fourth side plate 16 are smaller than the first side plate 13 and the third side plate 15. The rectangular shapes are opposed to each other in parallel in the assembled state. The surface of the first joining piece 17 is bonded to the rear surface of the edge of the fourth side plate 16 during the assembly process, whereby the first side plate 13 to the fourth side plate 16 are formed into a rectangular tube shape and constitute the side wall portion of the packaging box 11. To do.

  At the lower ends of the first side plate 13, the second side plate 14, the third side plate 15 and the fourth side plate 16, a first bottom plate 26, a second bottom plate 27, a third side plate are provided via mountain fold lines 22, 23, 24, 25, respectively. The bottom plate 28 and the fourth bottom plate 29 are connected. The first bottom plate 26 connected to the first side plate 13 and the third bottom plate 28 connected to the third side plate 15 have the same L shape, and the second bottom plate 27 connected to the second side plate 14 and the fourth side plate The fourth bottom plate 29 connected to 16 has the same triangular shape. U-shaped notches 26 a and 28 a that can mesh with each other are formed in the middle portion of the first bottom plate 26 and the third bottom plate 28. Finally, the first bottom plate to the fourth bottom plate 29 are assembled in a flat plate shape and constitute the bottom wall portion of the packaging box 11.

  A first partition plate 32 and a second partition plate 33 are connected to the first bottom plate 26 and the third bottom plate 28 via mountain fold lines 30 and 31 parallel to the mountain fold lines 22 and 24. The first partition plate 32 and the second partition plate 33 have the same rectangular shape, and the first partition plate 32 has a first wall portion 32a, a mountain fold line 34 and a valley fold line 35 orthogonal to the mountain fold line 30. Similarly, the second partition plate 33 is divided into a second wall portion 32 b and a third wall portion 32 c, and the second partition plate 33 is connected to the first wall portion 33 a and the second fold line 37 through a mountain fold line 36 and a valley fold line 37 orthogonal to the mountain fold line 31. It is divided into a wall portion 33b and a third wall portion 33c.

  A second connecting piece 39 is connected to the triangular second bottom plate 27 via a valley fold line 38, and similarly, a third connecting piece 41 is connected to the triangular fourth bottom plate 29 via a valley fold line 40. The In the assembling process, the surface of the second connection piece 39 is bonded to the back surface of the first bottom plate 26 facing it, and the surface of the third connection piece 41 is bonded to the back surface of the third bottom plate 28 facing it. .

  The upper ends of the first side plate 13, the second side plate 14, the third side plate 15 and the fourth side plate 16 are respectively connected to the rectangular first cover plate 46, the first side plate 46 and the fourth side plate 16 via mountain fold lines 42, 43, 44 and 45. The 2 lid plate 47, the 3rd lid plate 48, and the 4th lid plate 49 are connected.

  Next, the assembly procedure of the packaging box 11 will be described.

  As shown in FIG. 5A, the first bottom plate 26 and the third bottom plate 28 are respectively folded on the first bottom plate 26 and the third bottom plate 28 by folding the mountain fold lines 22 and 24 from the state in which the back side of the box blank 12 is turned up. And it is superimposed on the third side plate 15. Subsequently, as shown in FIG. 5B, the superimposed first side plate 13 and first bottom plate 26 are folded at a fold line 18 and superimposed on the second side plate 14, and the fourth side plate 16. Are stacked on the third side plate 15 and the third bottom plate 28 which are overlapped by being folded at a mountain fold line 20, and in this state, the first joining piece 17 is bonded to the fourth side plate 16 (see the hatched portion).

  Thus, the reason for bending the first bottom plate 26 and the third bottom plate 28 before bonding the first joining piece 17 to the fourth side plate 16 is that after bonding, the first bottom plate 26 and the third bottom plate 28 are connected to the first bottom plate 26 and the third bottom plate 28. This is because the first partition plate 32 and the second partition plate 33 interfere with the first side plate 13 to the fourth side plate 16 and it is difficult to bend the first bottom plate 26 and the third bottom plate 28.

  Subsequently, as shown in FIG. 4, the first side plate 13 to the fourth side plate 16 are spread in a square tube shape so that the first bottom plate 26 to the fourth bottom plate 29 are aligned on one plane, In this state, the second connecting piece 39 is bonded to the first bottom plate 26 (see the hatched portion), and the third connecting piece 41 is bonded to the third bottom plate 28 (see the hatched portion). Assembly is complete. In a state where the assembly of the packaging box 11 is completed, the notch 26a of the first bottom plate 26 and the notch 28a of the third bottom plate 28 mesh with each other, whereby the first bottom plate 26 and the third bottom plate 28 are firmly coupled, It is possible to prevent the bottom of the packing box 11 from coming off due to the weight of the stored articles 50 and 50 (see FIG. 3).

As shown in FIG. 3, when the assembled packaging box 11 is viewed from above, the first partition plate 32 and the second partition plate 33 cooperate to partition the interior of the packaging box 11 into two spaces. That is, the first wall portion 32 a of the first partition plate 32 is overlapped with the inner surface of the third side plate 15, and the edge 32 d of the first wall portion 32 a is in the mountain fold line 20 between the third side plate 15 and the fourth side plate 16. Abut. The first wall 33 a of the second partition plate 33 is overlapped with the inner surface of the first side plate 13, and the edge 33 d of the first wall 33 a contacts the mountain fold line 18 between the first side plate 13 and the second side plate 14. Touch. The third wall 32c connected to the tip of the second wall 32b of the first partition plate 32 extending in a substantially right angle direction from the third side plate 15 and the second partition plate 33 extending in a substantially right angle direction from the first side plate 13. The third wall portion 33c connected to the tip of the second wall portion 33b extends in a direction inclined with respect to the first side plate 13 and the third side plate 15 and is overlapped with each other.

  As shown in FIG. 6, when the first side plate 13 to the fourth side plate 16 are spread out in a rectangular tube shape and the first bottom plate 26 and the third bottom plate 28 are aligned on the same plane, a mountain fold line 30 is formed on the first bottom plate 26. The first partition plate 32 connected via the second base plate 28 and the second partition plate 33 connected to the third bottom plate 28 via the mountain fold line 31 move relative to each other in the directions of arrows A and A without interfering with each other. The third wall portion 32c of the first partition plate 32 and the third wall portion 33c of the second partition plate 33 abut smoothly.

  The opening on the upper surface of the completed packaging box 11 is connected to the first side plate 13, the second side plate 14, the third side plate 15 and the fourth side plate 16 via mountain fold lines 42 to 45, respectively. The second lid plate 47, the third lid plate 48, and the fourth lid plate 49 are closed by folding the mountain.

  When the assembled packaging box 11 is folded, as shown in FIG. 7, a valley fold line 38 connecting the second bottom plate 27 and the second connection piece 39 and a valley fold connecting the fourth bottom plate 29 and the third connection piece 41 are used. The line 40 is valley-folded, and the mountain fold line 19 connecting the second side plate 14 and the third side plate 15 and the mountain fold line 21 connecting the fourth side plate 16 and the first joining piece 17 are indicated by arrows B and B. The packing box 11 can be transformed into a flat shape that is not bulky by a simple operation of crushing in the direction.

  The packing box 11 having the above-described configuration is partitioned into two by the first partition plate 32 and the second partition plate 33, and therefore, as shown in FIG. The articles 50 and 50 can be stored on both sides of the first partition plate 32 and the second partition plate 33. At this time, since the first partition plate 32 and the second partition plate 33 are inclined with respect to the first side plate 13 and the third side plate 15, the pair of articles 50 and 50 are accommodated in a point-symmetric state so as to be wasted space. Can be minimized, the rattling of the articles 50 and 50 can be prevented, and the packaging box 11 can be miniaturized to reduce the cost.

As shown in FIG. 3, since the third wall portions 32c and 33c provided on the first partition plate 32 and the second partition plate 33 are in surface contact with each other in the assembled state of the packaging box 11, the first, The second partition plates 32 and 33 reinforce each other to increase the rigidity, and the articles 50 and 50 can be reliably prevented from moving inside the packaging box 11.

  Further, the first wall portion 32a of the first partition plate 32 overlaps the inner surface of the third side plate 15 and the first wall portion 33a of the second partition plate 33 overlaps the inner surface of the first side plate 13 so that both the first walls are formed. The positions of the portions 32a and 33a are restrained, and the rigidity of the first partition plate 32 and the second partition plate 33 is increased. At this time, the edge 32d of the first wall portion 32a abuts on the mountain fold line 20 between the third side plate 15 and the fourth side plate 16, and the edge 33d of the first wall portion 33a is connected to the first side plate 13 and the second side plate 13. Since it contacts the mountain fold line 18 between the side plates 14, the first wall portions 32a and 33a are prevented from sliding along the inner surfaces of the first side plate 13 and the third side plate 15, and the first partition plate 32 and the second partition plate 32 are prevented from sliding. The rigidity of the partition plate 33 is further increased.

  Thereby, while preventing the goods 50 and 50 from moving in the inside of the packing box 11, the goods 50 and 50 can be reliably protected when an impact is applied.

  Moreover, since the first partition plate 32 is directly connected to the first bottom plate 26 and the second partition plate 33 is directly connected to the third bottom plate 28, the first and second partition plates 32 and 33 and the first and third bottom plates are connected. A special plate material for connecting 26 and 28 is not required, and the yield of the material is improved correspondingly, and the cost can be reduced.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, the first and second partition plates 32 and 33 according to the embodiment include the second wall portions 32b and 33b, but the second wall portions 32b and 33b are omitted and the first wall portions 32a and 33a are connected to the first wall portions 32a and 33a. The three wall portions 32c and 33c may be directly connected.

  Further, in the embodiment, the third wall portions 32c and 33c of the first and second partition plates 32 and 33 are inclined with respect to the first side plate 13 and the third side plate 15, but the first side plate 13 and the third side plate. 15 may be orthogonal.

11 Packing box 13 First side plate 14 Second side plate 15 Third side plate 16 Fourth side plate 18 Mountain fold line (fold line)
20 Mountain fold line (fold line)
26 First bottom plate 27 Second bottom plate 28 Third bottom plate 29 Fourth bottom plate 30 Mountain fold line (fold line)
31 Mountain fold line (fold line)
32 1st partition plate 32a 1st wall part (2nd contact surface)
32c 3rd wall part (1st contact surface)
32d End edge 33 2nd partition plate 33a 1st wall part (2nd contact surface)
33c 3rd wall part (1st contact surface)
33d edge

Claims (4)

The first to fourth bottom plates (26 to 29) are connected to the lower ends of the first to fourth side plates (13 to 16) constituting the rectangular cylindrical side wall portion of the packing box (11), respectively. Four bottom plates (26 to 29) are bent with respect to the lower ends of the first to fourth side plates (13 to 16) to form a flat bottom wall portion of the packing box (11), and the first to fourth bottom plates The first partition plate (32) and the second partition plate (33) are connected to the first and third bottom plates (26, 28) facing each other through the fold lines (30, 31), respectively. An assembly structure of a packaging box that divides the internal space of the packaging box (11) into two parts by the first partition plate (32) and the second partition plate (33),
The first partition plate (32) and the second partition plate (33) include a second contact surface (32a, 33a) connected to the fold line (30, 31) and the second contact surface (32a, 33a). ) And the second contact surface (32a) of the first partition plate (32) is in surface contact with the inner surface of the third side plate (15) and the first contact surface (32c, 33c). The second contact surface (33a) of the second partition plate (33) is in surface contact with the inner surface of the first side plate (13), and the first contact surfaces (32c, 33c) are in surface contact with each other. An assembling structure of a characteristic packing box. The second contact surface (32a) of the first partition plate (32) has an edge (32d) abutted against a fold line (20) connecting the third side plate (15) and the fourth side plate (16). The second contact surface (33a) of the second partition plate (33) is abutted against a fold line (18) connecting the first side plate (13) and the second side plate (14) characterized in that it comprises a (33d), an assembly structure of a packing box according to claim 1. The first contact surfaces (32c, 33c) of the first partition plate (32) and the second partition plate (33) are inclined with respect to the first side plate (13) and the third side plate (15). The assembly structure of the packaging box according to claim 1 or 2 , characterized by the above-mentioned. The first partition plate (32) and the second partition plate (33) are each divided into first to third wall portions via two broken lines, and the first wall portion serving as the second contact surface. (32a, 33a) and the third wall (32c, 33c) serving as the first contact surface extend substantially perpendicular to the first side plate (13) and the third side plate (15). The assembly structure of the packaging box according to claim 3, wherein the second wall portion (32b, 33b) is arranged.

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