JP2024077567A - Packing box - Google Patents

Abstract

To provide a packing box which can inhibit fraudulent opening and enables a user to check traces easily if the packing box is fraudulently opened.SOLUTION: A paper packing box 1 includes: a bottom wall 11; a cylindrical outer peripheral wall 12 having a rear wall part 16 and a pair of side wall parts 18; a lid body 43 which closes an upper end opening of the outer peripheral wall 12; and a lid wall 41 having a pair of side insertion pieces 45 which continue into both side edges of the lid body 43 and are disposed at an inner side of the pair of side wall parts 18. Each side wall part 18 is formed of a double wall having an outer panel 18a extending upward from a side edge of the bottom wall 11, and inner panel 18b disposed at an inner side of the outer panel 18a. Lock grooves 70 are respectively provided at lower ends of the inner panels 18b of the pair of side wall parts 18. A pock piece 71 which is folded to an outer side of the side insertion piece 45 to engage with the lock groove 70 is provided at each of the pair of side insertion pieces 45.SELECTED DRAWING: Figure 3

Description

The present invention relates to a packaging box.

Patent Document 1 discloses a packaging box with a locking structure on the lid flap to prevent unauthorized opening until the box is properly opened. The locking structure of this packaging box includes a locking hole on the lid flap and a locking piece on the front wall that is inserted into the locking hole. The locking piece includes a locking body and a folded piece folded back on the underside of the locking body. The lid flap includes an insertion piece that is inserted inside the front wall, and the insertion piece includes a support piece that supports the folded piece from below. When an unauthorized operation is performed to pull the locking piece out of the locking hole, the folded piece supported by the support piece comes into contact with the insertion piece, preventing the locking piece from being pulled out of the locking hole.

JP 2005-8262 A

In the packaging box of Patent Document 1, when the lid flap is locked by the locking piece, pushing the locking piece further in can release the support of the support piece against the folded-back piece. In this state, if tampering is performed in a direction to pull the locking piece out of the locking hole, the folded-back piece becomes flat against the locking body, making it possible to pull the locking piece out of the locking hole. Therefore, there is room for improvement in the packaging box of Patent Document 1 with respect to measures against opening by tampering.

The objective of the present invention is to provide a packaging box that can prevent tampering and, if tampering does occur, allows traces of the tampering to be easily identified.

The present invention provides a paper packaging box comprising a bottom wall, a cylindrical outer peripheral wall having a rear wall portion extending upward from the rear edge of the bottom wall and a pair of side wall portions extending in a direction intersecting the rear wall portion, a lid body connected to the upper edge of the rear wall portion and closing the upper end opening of the outer peripheral wall, and a lid wall having a pair of side insertion pieces connected to both side edges of the lid body and respectively arranged inside the pair of side wall portions, each of the pair of side wall portions being a double wall having an outer plate extending upward from the side edge of the bottom wall and an inner plate arranged inside the outer plate, a lock groove is provided at the lower end of the inner plate of each of the pair of side wall portions, and each of the pair of side insertion pieces is provided with a locking piece that is folded back to the outside of the side insertion piece and engages with the lock groove.

The outer peripheral wall has a side wall portion made of a double wall, the cover wall has a side insertion piece that is inserted into the inside of the side wall portion, a locking groove is provided on the inner plate of the side wall portion, and a locking piece is provided on the side insertion piece. This prevents both sides of the cover body from lifting up from the side wall portion, preventing unauthorized removal and tampering from this area. In addition, the locking piece folded back on the outside of the side insertion piece spreads away from the side insertion piece due to the repulsive force of the paper itself, making a sound when it engages with the locking groove. This allows the worker to recognize the engagement of the locking piece with the locking groove, improving the efficiency of the sealing work.

The packaging box of the present invention can prevent tampering, and if tampering does occur, traces of the tampering can be easily identified.

FIG. 1 is a perspective view showing a packaging box according to an embodiment of the present invention. Cross-sectional view of line II-II in Figure 1. Cross-sectional view taken along line III-III in Figure 1. FIG. Top view of a packaging box blank. FIG. FIG. 7 is an enlarged view of part VII of FIG. 5 . 13 is a front view showing the relationship between a lock groove formed in an inner plate of the side wall portion and a lock piece connected to a side insertion piece. FIG. 13 is a front view showing the relationship between the lock groove and the lock piece when the lid is opened or when an unauthorized operation is performed. FIG. FIG. FIG. FIG. 13 is a perspective view showing a state in which a lock piece is inserted into a lock hole. Cross-sectional view of FIG. FIG. 13 is a cross-sectional view similar to FIG. 3 during the unsealing process of FIG. 12 . FIG. FIG. 2 is a perspective view showing the first stage of the tampering process. FIG. 15B is a perspective view of the state of FIG. 15A as seen from the inside. FIG. 13 is a perspective view showing a second stage of the tampering process. Cross-sectional view of FIG. 16A. FIG. FIG. 18 is a plan view of a blank for the holder of FIG. 17 .

The following describes an embodiment of the present invention with reference to the drawings.

Figures 1 to 3 show a packaging box 1 according to an embodiment of the present invention. This packaging box 1 is used to package multiple vials (items) 5 that contain, for example, IPS cells that require low-temperature storage (e.g., -196 degrees). However, the items to be packaged are not limited to vials 5 and can be changed as necessary.

Referring to Figures 2 to 4, the packaging box 1 includes a box body 10, a holder 80 for holding the vial 5, and a cushioning material 100 for preventing the movement of the vial 5. In this embodiment, the packaging box 1 (box body 10) is prevented from being tampered with, and if tampering does occur, traces of the tampering can be easily identified.

The box body 10 is assembled without gluing by folding a blank shown in FIG. 5 at a predetermined location. The blank for the box body 10 is formed by punching coated cardboard with a surface treatment using a well-known paper container punching device. The holder 80 is made of coated cardboard like the box body 10, and is assembled without gluing by folding a blank shown in FIG. 9 at a predetermined location. The cushioning material 100 is made of an elastic material (e.g., sponge).

The thin lines in Figures 5 and 9 are general-purpose creases formed by cutting the outer surface of the court ball to compress its thickness. The thick lines in Figures 5 and 6 are the cutting lines formed by cutting the court ball with a blade, and the shape lines (sides) formed by punching.

The configuration of the box body 10, holder 80, and cushioning material 100 will be described in detail below.

The X direction shown in each drawing is the front-to-rear direction of the box body 10, the Y direction is the width direction of the box body 10, and the Z direction is the height direction of the box body 10. In addition, in this specification, the direction indicated by the X arrow is the front side, and the direction opposite to the arrow is the rear side.

(Box body configuration)
1 and 4, the box body 10 is a rectangular parallelepiped whose dimension in the front-rear direction X is the same as its dimension in the width direction Y, and whose dimension in the height direction Z is smaller than each of the dimensions in the front-rear direction X and the width direction Y. However, each of the dimensions in the front-rear direction X, the width direction Y, and the height direction Z of the box body 10 can be changed depending on the items to be stored inside. In addition, the shape of the box body 10 in a plan view is not limited to a rectangular shape, and may be a polygonal shape with four or more sides.

The box body 10 is integrally formed with a bottom wall 11, an outer peripheral wall 12, and a cover wall 41. A cylindrical storage section 13 with a bottom is defined by the bottom wall 11 and the outer peripheral wall 12, and an upper end opening (hereinafter simply referred to as "opening") 14 of the storage section 13 (outer peripheral wall 12) is closed by the cover wall 41.

Referring to Figures 2 and 3, the box body 10 has a lock hole 50 and a lock part 51 on the front wall part 17 side, which will be described in detail later, in order to maintain the sealed state by the lid wall 41, and a lock groove 70 and a lock piece 71 on the side wall part 18 side, which will be described in detail later. In addition, an opening operation part 65 is provided on the front wall part 17 in order to open the box body 10 in a sealed state.

Referring to Figures 4 and 5, the bottom wall 11 is a single-layer structure (single wall) and is a square-shaped plate extending along the XY plane.

2 to 4, the outer peripheral wall 12 is tubular and stands upward (toward the lid wall 41) from the outer peripheral edge of the bottom wall 11. In this embodiment, the outer peripheral wall 12 is a square tube that corresponds to the shape of the bottom wall 11. More specifically, the outer peripheral wall 12 includes a rear wall portion 16 that extends upward from the rear edge of the bottom wall 11, a front wall portion 17 that extends upward from the front edge of the bottom wall 11, and a pair of side wall portions 18 that extend upward from both side edges of the bottom wall 11.

Referring to FIG. 2, the rear wall 16 is a rectangular plate extending along the YZ plane. The rear wall 16 is connected to the rear edge of the bottom wall 11 via a bend 19. Referring to FIG. 5, the rear wall 16 is connected to the upper side of the bottom wall 11 in FIG. 5 via a fold line 19a that constitutes the fold line 19. The fold line 19a is a general-purpose crease.

Referring to FIG. 2, the front wall portion 17 is spaced apart from the rear wall portion 16 in the front-rear direction X and extends along the YZ plane. The dimension of the front wall portion 17 in the height direction Z is approximately the same as the dimension of the rear wall portion 16 in the height direction Z. The front wall portion 17 has a two-layer structure (double wall) with an outer plate 17a and an inner plate 17b.

The outer plate 17a is a rectangular plate body and is connected to the front edge of the bottom wall 11 via a bend 20. The inner plate 17b is a rectangular plate body smaller than the outer plate 17a and is connected to the upper edge of the outer plate 17a via a bend 21 and is disposed inside the outer plate 17a. Referring to FIG. 5, the outer plate 17a is connected to the lower side of the bottom wall 11 in FIG. 5 via a bend line 20a that constitutes the bend 20. The inner plate 17b is connected to the lower side of the outer plate 17a in FIG. 5 via a bend line 21a that constitutes the bend 21. Both of these bend lines 20a, 21a are general-purpose lines.

Referring to FIG. 3, the pair of side walls 18 are spaced apart in the width direction Y and extend along an XZ plane perpendicular to both the rear wall 16 and the front wall 17. The dimension of the side wall 18 in the height direction Z is approximately the same as the dimension of each of the rear wall 16 and the front wall 17 in the height direction Z. Each of the pair of side walls 18 has a two-layer structure (double wall) including an outer plate 18a and an inner plate 18b.

The outer plate 18a is a rectangular plate body, and is connected to the edge of the bottom wall 11 in the width direction Y via a bend 22. The inner plate 18b is a rectangular plate body smaller than the outer plate 18a, and is connected to the upper edge of the outer plate 18a via a bend 23, and is disposed inside the outer plate 18a. Referring to FIG. 5, the two outer plates 18a are connected to both sides of the bottom wall 11 in FIG. 5 via bend lines 22a that form the bend lines 22, respectively. The two inner plates 18b are connected to the outside of the outer plate 18a in FIG. 5 via bend lines 23a that form the bend lines 23, respectively. These bend lines 22a, 23a are both made of general-purpose creases.

Referring to FIG. 6, folding pieces 25 are provided on both sides of the rear wall 16 in the width direction Y via folding portions (not shown). The folding pieces 25 are rectangular plates that are folded perpendicular to the rear wall 16 and extend along the XZ plane, and are disposed between the outer plate 18a and the inner plate 18b of the side wall 18. The folding pieces 25 connect the rear wall 16 and the side wall 18, maintaining the assembled state in which they extend perpendicularly. Referring to FIG. 5, the folding pieces 25 are connected to both sides of the rear wall 16 in FIG. 5 via folding lines 26a that form folding portions. The folding lines 26a are made of general-purpose lines.

Referring to Figures 2 and 6, an inner wall portion 28 is provided via a bent portion 29 on the rear edge of the inner plate 18b of each of the pair of side wall portions 18 located on the rear wall portion 16 side. The inner wall portion 28 is a roughly rectangular plate body that is bent perpendicularly to the inner plate 18b to extend along the YZ plane and is disposed inside the rear wall portion 16. Referring to Figure 5, the inner wall portion 28 is connected to the upper side of the inner plate 18b in Figure 5 via a bend line 29a that constitutes the bend line 29. The bend line 29a is made of a lead line that has cut lines provided at intervals on a general-purpose line.

Referring to FIG. 6, the pair of inner wall portions 28 are formed with overlapping dimensions in the front-rear direction X. The pair of inner wall portions 28 are provided with engaging grooves 28a that mesh with each other. Of the pair of inner wall portions 28, one engaging groove 28a is formed by a cutting line extending downward from the upper end, and the other engaging groove 28a is formed by a cutting line extending upward from the lower end. The engagement of the two engaging grooves 28a maintains the pair of inner wall portions 28 positioned inside the rear wall portion 16 and the pair of inner plates 18b folded relative to the corresponding outer plates 18a. In addition, while the rear wall portion 16 itself has a single-layer structure (single wall), the pair of inner wall portions 28 form the rear wall of the outer peripheral wall 12 into a two-layer structure (double wall).

2 and 6, the front edge of the outer plate 18a of each of the pair of side walls 18 located on the front wall 17 side is provided with a folding piece 31 via a folding portion 32. The folding piece 31 is a roughly rectangular plate body that is folded perpendicularly to the outer plate 18a and extends along the YZ plane, and is disposed between the outer plate 17a and the inner plate 17b of the front wall 17. The folding piece 31 connects the front wall 17 and the side wall 18, maintaining the assembled state in which they extend perpendicularly. Referring to FIG. 5, the folding piece 31 is connected to the lower side of the outer plate 18a in FIG. 5 via a folding line 32a that constitutes the folding portion 32. The folding line 32a is a lead crease.

Referring to Figures 2 and 6, a folding piece 34 is provided at the front edge of the inner plate 18b of each of the pair of side wall portions 18 located on the front wall portion 17 side via a folding portion 35. The folding piece 34 is a rectangular plate body that is folded perpendicularly to the inner plate 18b and extends along the YZ plane, and is disposed between the outer plate 17a and the inner plate 17b of the front wall portion 17. Referring to Figure 5, the folding piece 34 is connected to the lower side of the inner plate 18b in Figure 5 via a folding line 35a that constitutes the folding portion 35. The folding line 35a is a lead crease.

2 and 6, the pair of folding pieces 34 are formed with a dimension that overlaps in the front-to-rear direction X. The dimension in the width direction Y (front-to-rear direction X in FIG. 6) of each folding piece 34 is set as long as possible without abutting the opposing side wall portion 18. The folding pieces 34 connect the front wall portion 17 and the side wall portion 18, maintaining the assembled state in which they extend in the perpendicular direction. In addition, the opening portion of the front wall portion 17 caused by the formation and separation of the lock portion 51 and the opening operation portion 65 is blocked by the folding pieces 34 (see FIG. 14).

Referring to Figures 5 and 6, one of the pair of folding pieces 34 has a protrusion 36 extending toward the rear wall 16 via a bent portion 37, and this protrusion 36 has a pentagonal positioning hole 36a. Referring to Figure 5, the protrusion 36 is connected to the outside of the folding piece 34 in Figure 5 via a fold line 37a that constitutes the fold line 37. The fold line 37a is a general-purpose crease.

Continuing with reference to Figures 5 and 6, the inner plate 17b of the front wall 17 has a positioning protrusion 38 provided at a position corresponding to the positioning hole 36a via a bent portion 39. Referring to Figure 2, by fitting the positioning protrusion 38 into the positioning hole 36a, the repulsive force of the court ball itself prevents the inner plate 17b from elastically spreading in a direction away from the outer plate 17a, and the assembled state is maintained. Referring to Figure 5, the positioning protrusion 38 is connected to the underside of the inner plate 17b in Figure 5 via a bend line 39a that constitutes the bend line 39. The bend line 39a is made of a lead crease.

Referring to Figures 1 and 4, the cover wall 41 is connected to the upper end of the rear wall portion 16 via a bent portion 42. The cover wall 41 can rotate about the bent portion 42 extending in the width direction Y between a closed position (see Figure 1) in which the opening 14 of the outer peripheral wall 12 is closed, and an open position (see, for example, Figure 14) in which the opening 14 of the outer peripheral wall 12 is open. Referring to Figures 4 and 6, the cover wall 41 includes a cover body 43 and two types of insertion pieces 44, 45.

The lid body 43 is a rectangular plate with a single-layer structure (single wall) that is slightly smaller than the bottom wall 11, and in the closed state shown in FIG. 1, it closes the opening 14 in the outer peripheral wall 12. The lid body 43 is connected to the upper end of the rear wall 16 via the bent portion 42 described above. With reference to FIG. 5, the lid body 43 is connected to the upper side of the rear wall 16 in FIG. 5 via the fold line 42a that constitutes the fold line 42. The fold line 42a is made of a general-purpose crease.

Referring to Figures 2 and 4, the front insertion piece 44 is a generally rectangular plate that is connected to the front edge of the lid body 43 via a bent portion 46 and is inserted inside the front wall portion 17. The dimension of the front insertion piece 44 from the bent portion 46 to the tip is set as long as possible without abutting against the bottom wall 11 (projecting piece portion 36) in the sealed state shown in Figure 2. Referring to Figure 5, the front insertion piece 44 is connected to the upper side of the lid body 43 via a fold line 46a that constitutes the fold line 46. The fold line 46a is a general-purpose line.

Referring to Figures 3 and 4, the side insertion piece 45 is a generally inverted trapezoidal plate whose tip width is narrower than the width in the front-rear direction X on the lid body 43 side, and is connected to both sides of the lid body 43 via bent parts 47, and is inserted inside the side wall part 18. The dimension of the side insertion piece 45 from the bent part 47 to the tip is set to a length that allows it to abut against the bottom wall 11 in the sealed state shown in Figure 3.

Referring to FIG. 5, the side insertion pieces 45 are connected to both sides of the lid body 43 via fold lines 47a that form the folding portions 47. The fold lines 47a are made of a one-sided zipper that includes a plurality of spaced apart first cutting lines and a second cutting line that connects to the end of each of the first cutting lines on the front insertion piece 44 side. The second cutting lines are inclined with respect to the first cutting lines and extend toward the lid body 43. This one-sided zipper also functions as a break line for separating the side insertion pieces 45 from the lid body 43 (see FIG. 14).

1 and 2, the lock hole 50 is formed in the center of the width direction Y of the cover wall 41. Referring to FIGS. 5 and 6, the lock hole 50 is composed of one first cutting line 50a and two second cutting lines 50b. The first cutting line 50a is provided on the front insertion piece 44 side with a gap from the fold line 46a (folded portion 46) and extends parallel to the fold line 46a. The two second cutting lines 50b are connected to both ends of the first cutting line 50a and extend to the tip side of the front insertion piece 44. The two second cutting lines 50b are inclined in a direction away from each other from the cover body 43 side toward the tip side of the front insertion piece 44. There is no fold line 46a between the two second cutting lines 50b.

Referring to Figures 2 and 4, the locking portion 51 includes a movable piece 52, a locking portion main body 53, a folded piece 54, and a retaining piece 55, and is inserted into the locking hole 50 to lock the cover wall 41 so that it cannot be opened. Referring to Figures 5 and 7, the locking portion 51 has a bilaterally symmetrical shape. The movable piece 52 is formed on the outer plate 17a of the front wall portion 17, and the locking portion main body 53, the folded piece 54, and the retaining piece 55 are formed by cutting out a part of the inner plate 17b of the front wall portion 17.

Referring to Figures 1 and 7, the movable piece 52 is defined within the outer panel 17a by a pair of cutting lines 56 and one fold line 57a provided on the outer panel 17a. The pair of cutting lines 56 extend downward from the upper edge (folded portion 21) of the outer panel 17a and are inclined away from each other. The fold line 57a is a general-purpose crease and is connected to the lower ends of each of the pair of cutting lines 56. The movable piece 52 configured in this manner is rotatable and elastically displaceable around the fold line 57a relative to the other parts of the outer panel 17a.

2 and 4, the locking body 53 is connected to the upper edge of the movable piece 52 via a bent portion 58, and extends along the lid body 43 in the sealed state shown in FIG. 2. Referring to FIG. 7, the locking body 53 is connected to the lower side of the movable piece 52 in FIG. 7 via a fold line 58a that constitutes the fold line 58. The fold line 58a is a general-purpose crease, and is located on the inner plate 17b side of the fold line 21a, that is, above the fold line 21 (the upper edge of the outer plate 17a) in the assembled state shown in FIG. 2.

Continuing to refer to FIG. 7, the locking section main body 53 is defined within the inner plate 17b by a pair of cutting lines 59 extending from both ends of the fold line 58a toward the folded back piece 54. Each of the pair of cutting lines 59 includes an inclined portion 59a, a first curved portion 59b, and a second curved portion 59c. The pair of inclined portions 59a are connected to both ends of the fold line 58a, respectively, and are inclined in directions away from each other. The pair of first curved portions 59b are connected to the ends of the pair of inclined portions 59a, respectively, and are curved so as to protrude toward the movable piece 52. The pair of second curved portions 59c are connected to the ends of the pair of first curved portions 59b, respectively, and are curved so that their width gradually decreases as they approach the folded back piece 54.

The pair of second curved portions 59c have continuous portions 59d that are not cut. The continuous portions 59d are provided to keep the locking portion 51 connected to the inner plate 17b until the time of use. By preventing free displacement of the locking portion 51 when the box body 10 is punched out by the paper container punching device and before the box body 10 is used, the ease of handling of the blank of the box body 10 is ensured.

Referring to Figures 4 and 7, the width of the locking body 53 in the width direction Y is the largest on the movable piece 52 side and gradually decreases toward the folded piece 54, forming a generally trapezoidal shape. The maximum width W1 of the locking body 53 is the same dimension as the maximum width between the pair of second cutting lines 50b in the locking hole 50 shown in Figure 5, and is greater than the overall length of the first cutting lines 50a.

The locking body 53 has a generally rectangular through hole 53a. As shown most clearly in FIG. 7, the through hole 53a is defined by a first hole edge 53b on the movable piece 52 side, a second hole edge 53c on the folded piece 54 side, and a pair of third hole edges 53d. The long first hole edge 53b and second hole edge 53c extend in the width direction Y, and the short third hole edge 53d extends in the front-rear direction X. The first hole edge 53b has a protrusion 53e that protrudes in an arc shape into the through hole 53a. The second hole edge 53c is curved so as to protrude toward the folded piece 54 side.

The locking body 53 further includes a pair of fold lines 53f to allow bending of the outer portion of the locking body 53 in the width direction Y. In this embodiment, each fold line 53f is formed by a cutting line. The fold lines 53f are inclined in a direction approaching each other from the flexible piece 52 side toward the folded piece 54 side.

Referring to Figures 2 and 4, the folded piece 54 is a rectangular plate that is connected to the edge of the locking body 53 on the rear wall 16 side via a bent portion 60 and is folded back to the upper side of the locking body 53 so as to extend toward the movable piece 52 (front insertion piece 44). Referring to Figure 7, the folded piece 54 is connected to the lower side of the locking body 53 in Figure 7 via a bend line 60a that constitutes the bend line 60. The bend line 60a is made of a lead crease.

Continuing to refer to FIG. 7, the folded piece 54 is defined within the inner plate 17b by a pair of cut lines 61 that are connected to the ends of a pair of cut lines 59. The width W3 of the folded piece 54 is greater than the width W2 of the through hole 53a and less than the maximum width W1 of the locking portion body 53. The length L1 of the folded piece 54 in the front-rear direction X is the same as the dimension L2 from the fold line 60a to the near end of the third hole edge 53d.

Referring to FIG. 2, the retaining piece 55 is connected to the edge of the folded back piece 54 on the side of the movable piece 52 (front insertion piece 44) via a bent portion 62, and protrudes downward through the through hole 53a. The retaining piece 55 abuts against the inner surface of the front insertion piece 44, thereby preventing the entire locking portion 51 from slipping out of the locking hole 50. Referring to FIG. 7, the retaining piece 55 is connected to the lower side of the folded back piece 54 in FIG. 7 via a bend line 62a that constitutes the bend line 62. The bend line 62a is a lead crease.

Continuing to refer to FIG. 7, the retaining piece 55 is defined in the inner plate 17b by a cut line 63 that is connected to the pair of cut lines 61. The cut line 63 includes a pair of first portions 63a, a pair of second portions 63b, and one third portion 63c. The pair of first portions 63a are connected to the pair of cut lines 61, respectively, and are inclined toward each other. The pair of second portions 63b are connected to the pair of first portions 63a, respectively, and extend parallel to each other. The one third portion 63c is connected to each end of the pair of second portions 63b. The third portion 63c has an uncut continuous portion 63d. The continuous portion 63d cooperates with the continuous portion 59d to maintain the state in which the lock portion 51 is connected to the inner plate 17b until use.

1, the opening operation section 65 is provided on the outer plate 17a of the front wall section 17 so as to be adjacent to the lower side of the movable piece 52. Referring to FIG. 7, the opening operation section 65 is defined by the above-mentioned fold line 57a, a pair of break lines 66, and one cut line 67. The pair of break lines 66 are made of one-sided zippers, extend in a direction away from both ends of the fold line 57a, and are inclined in a direction toward each other. The ends of the pair of break lines 66 on the fold line 57a side are positioned at a distance that allows them to be connected to the pair of cut lines 56 when broken by the operation of the opening operation section 65. The cut line 67 is connected to the ends of the pair of break lines 66 on the fold line 20a side. A semicircular punched section 68 is provided above the cut line 67 (below in FIG. 1).

In FIG. 1, insert your fingers into the punched portion 68 to grasp the lower end of the opening operation portion 65, and pull the opening operation portion 65 upward. This breaks the outer plate 17a along the break line 66, and the lock portion 51 can be separated from the front wall portion 17 together with the opening operation portion 65 (see FIG. 12).

1 and 5, the dimension S1 in the front-rear direction X of the lid body 43 is shorter than the dimension in the front-rear direction X of the outer peripheral wall 12 from the rear wall 16 to the front wall 17, more specifically, the dimension S2 in the front-rear direction X of the bottom wall 11. As a result, as shown in FIG. 2, when the locking portion 51 is inserted into the locking hole 50, the upper end of the movable piece 52 is positioned inside (toward the rear wall 16) the outer plate 17a. As a result, the opening operation portion 65 connected to the movable piece 52 is inclined outward from the top to the bottom. Since the lower end of the opening operation portion 65 protrudes outward most, the lower end of the opening operation portion 65 can be held when performing the opening operation, even if the operator is wearing gloves.

Referring to Figures 3 and 8A, the lock grooves 70 are provided at the lower ends of the inner plates 18b of the pair of side wall portions 18. The lock grooves 70 are inverted trapezoidal in shape with a width that gradually increases from the lower end to the upper end. Referring to Figure 5, the lock grooves 70 are formed by cutting out the outer ends of the inner plates 18b.

Referring to Figures 3 and 8A, the locking pieces 71 are provided on the pair of side insertion pieces 45 of the cover wall 41 via bent portions 72, and are folded back to the outside of the side insertion pieces 45 to engage with the locking grooves 70. The locking pieces 71 are trapezoidal in shape with a width that gradually decreases from the bottom end to the top end. Referring to Figure 5, the locking pieces 71 are connected to the outside of the side insertion pieces 45 in Figure 5 via a bend line 72a that constitutes the bend line 72. The bend line 72a is made of a general-purpose crease.

Referring to FIG. 8A, the width of the lock groove 70 in the front-rear direction X is smaller than the width of the inner plate 18b of the side wall portion 18 in the front-rear direction X, and is set to approximately 2/3 of the total width of the inner plate 18b. The width of the lock piece 71 in the front-rear direction X corresponds to the width of the lock groove 70, and is smaller than the width of the side insertion piece 45 in the front-rear direction X. The lock groove 70 and the lock piece 71 are provided in the center of the inner plate 18b and the side insertion piece 45 in the front-rear direction X.

The width W5 of the upper end of the lock groove 70 in the front-rear direction X is wider than the width W6 of the upper end of the lock piece 71 and narrower than the width W7 of the lower end of the lock piece 71. As a result, as shown in FIG. 8B, the lock piece 71 can be engaged with the lock groove 70 to lock the cover wall 41 so that it cannot be opened. Furthermore, even if the side of the cover wall 41 is improperly operated in the opening direction, the lock piece 71 engages with the lock groove 70, preventing the cover body 43 from floating up relative to the side wall portion 18.

For example, when assembling the blank shown in FIG. 5 into the box body 10 shown in FIG. 4, first, the rear wall portion 16 is mountain-folded relative to the bottom wall 11, and the pair of fold-in pieces 25 are mountain-folded relative to the rear wall portion 16. Next, with the pair of inner wall portions 28 each valley-folded relative to the inner plate 18b of the side wall portion 18, the outer plate 18a is mountain-folded relative to the bottom wall 11, and the inner plate 18b is mountain-folded relative to the outer plate 18a, so that the fold-in pieces 25 are rolled up by the outer plate 18a and the inner plate 18b. After that, the engagement grooves 28a of the pair of inner wall portions 28 are engaged. This results in the assembly process state shown in FIG. 6.

Next, the pair of folding pieces 34 are valley-folded against the inner plate 18b of the side wall portion 18, and the pair of folding pieces 31 are mountain-folded against the outer plate 18a. Next, with the locking portion 51 separated from the inner plate 17b of the front wall portion 17, the outer plate 17a is mountain-folded against the bottom wall 11, and the inner plate 17b is mountain-folded against the outer plate 17a, so that the folding pieces 31, 34 are rolled up by the outer plate 17a and the inner plate 17b. Thereafter, the positioning protrusion 38 is fitted into the positioning hole 36a, thereby achieving the assembled state before sealing shown in FIG. 4.

In the assembled state shown in FIG. 4, the front insertion piece 44 and the pair of side insertion pieces 45 are mountain-folded relative to the lid body 43, and the lock piece 71 is valley-folded relative to the side insertion pieces 45, just before sealing. The sealing of the box body 10 by the lid wall 41 will be described in detail later.

(Holder configuration)
2 to 4, the holder 80 is disposed on the bottom wall 11 of the box body 10 and holds the vial 5. Specifically, the holder 80 is a rectangular parallelepiped that includes a top plate 81, a pair of first side plates 82, a pair of second side plates 83, and a bottom plate 84, and is thinner in the height direction Z than the box body 10 in the height direction Z. The side insertion piece 45 including the lock piece 71 described above is inserted between the holder 80 and the side wall portion 18 of the box body 10.

Referring to FIG. 4, the top plate 81 is a square plate that is slightly smaller than the bottom wall 11 of the box body 10. The top plate 81 is provided with a plurality of circular retaining holes 81a (ten in this embodiment) through which the vials 5 are passed and retained.

Referring to Figures 3 and 4, the pair of first side plates 82 are rectangular plates that are connected to both sides of the top plate 81 in the width direction Y via bent portions 85. A pair of protruding pieces 82a protrude from the lower end of the first side plate 82. Referring to Figure 9, the first side plate 82 is connected to both sides of the top plate 81 in Figure 9 via a bend line 85a that constitutes the bend line 85. The bend line 85a is made of a general-purpose crease.

Referring to FIG. 3, a folded piece 86 that is folded onto the bottom plate 84 is connected to the lower end of the first side plate 82 via a bent portion 87. The aforementioned protruding piece 82a is formed integrally with the first side plate 82 by providing a cutting line on the folded piece 86. Referring to FIG. 9, the protruding piece 82a is connected to the outside of the first side plate 82 in FIG. 9 via a fold line 87a that constitutes the fold portion 87. The fold line 85a is a general-purpose crease and is provided in a portion other than the protruding piece 82a.

Referring to Figures 2 and 4, the pair of second side plates 83 are rectangular plates similar to the first side plates 82, and are connected to both sides of the top plate 81 in the front-rear direction X via bent portions 88. A pair of protruding pieces 83a protrude from the lower end of the second side plate 83. Referring to Figure 9, the second side plates 83 are connected to the top and bottom of the top plate 81 in Figure 9 via bent lines 88a that form the bent portions 88. The bent lines 88a are made of lead lines.

2 and 3, the bottom plate 84 is a plate having a shape generally identical to that of the top plate 81, and is connected to the lower edge of one of the pair of second side plates 83 via a bent portion 89. The protruding piece 83a of one of the pair of second side plates 83 described above is integrally provided to the second side plate 83 by providing a cutting line on the bottom plate 84. Referring to FIG. 9, the bottom plate 84 is connected to the lower side of the second side plate 83 located on the lower side in FIG. 9 via a fold line 89a that constitutes the fold line 89. The fold line 89a is made of a general-purpose crease and is provided in a portion other than the protruding piece 83a.

Referring to Figures 2 and 3, a folding piece 90 is connected to both sides of the pair of second side plates 83 in the width direction Y via a folding portion 91. Each folding piece 90 is folded relative to the second side plate 83 and disposed inside the first side plate 82. Referring to Figure 9, the folding piece 90 is connected to both sides of the second side plate 83 in Figure 9 via a folding line 91a that constitutes the folding portion 91. The folding line 91a is made of a general-purpose crease.

Referring to FIG. 2, a folding piece 92 is connected to the rear end (left end in FIG. 2) of the bottom plate 84 in the front-rear direction X via a folding portion (not shown). The folding piece 92 is folded upward with respect to the bottom plate 84 and is disposed inside the second side plate 83. Referring to FIG. 9, the folding piece 92 is connected to the underside of the bottom plate 84 in FIG. 9 via a folding line 93a that constitutes the folding portion. The folding line 93a is made of a general-purpose crease.

Referring to FIG. 2, a locking hole 94 is provided in the folding piece 92, and a locking piece 95 is provided on the pair of second side plates 83 that is not connected to the bottom plate 84. Referring to FIG. 9, the locking hole 94 is provided on the folding piece 92 side with a gap from the fold line 93a, and consists of a cut line that extends parallel to the fold line 93a. The locking piece 95 is connected to the upper side of the second side plate 83 located on the upper side in FIG. 9 via a fold line 96a that constitutes the folding portion 96. The fold line 96a consists of a general-purpose crease.

For example, when assembling the blank shown in FIG. 9 into the holder 80 shown in FIG. 4, first, the pair of second side plates 83 are each mountain-folded relative to the top plate 81, and the bottom plate 84 is mountain-folded relative to the second side plate 83. Next, the folding piece 92 is mountain-folded relative to the bottom plate 84, and the folding piece 92 is inserted inside the second side plate 83 on which the locking piece 95 is provided. After that, the locking piece 95 is mountain-folded relative to the second side plate 83, and the locking piece 95 is inserted into the locking hole 94.

Next, the folding pieces 90 are each folded in a mountain fold relative to the pair of second side plates 83. Next, the pair of first side plates 82 are each folded in a mountain fold relative to the top plate 81, and the folding pieces 86 are each folded in a mountain fold relative to the pair of first side plates 82, and the folding pieces 86 are inserted onto the bottom plate 84. This completes the holder 80 in the assembled state shown in Figure 4.

(Structure of cushioning material)
2 and 3, the cushioning material 100 is disposed between the upper end of the vial 5 and the lid body 43 of the box body 10. The cushioning material 100 has a thickness that allows the locking portion 51 to be inserted between the cushioning material 100 and the lid body 43 while still providing a gap. After the box body 10 is opened, the cushioning material 100 is used as a tool for removing the vial 5. Specifically, the cushioning material 100 is as follows.

4 and 10, the cushioning material 100 has a circular through hole 101 at a position corresponding to the holding hole 81a of the holder 80. A plurality of semicircular protrusions 102 (seven in this embodiment) protruding inward are provided at intervals in the circumferential direction on the edge of the through hole 101. With reference to FIGS. 2 and 10, the diameter of the through hole 101 is larger than the diameter of the head 5a of the vial 5. The diameter of an imaginary circle V (see FIG. 10) connecting the tops of the protrusions 102 is smaller than the diameter of the head 5a of the vial 5 and larger than the diameter of the neck 5b of the vial 5. With reference to FIGS. 3 and 10, a notch 103 is provided on each side of the cushioning material 100.

After opening the box body 10, the worker pushes the cushioning material 100 towards the vial 5. This causes the protrusion 102 to elastically deform, allowing the head 5a of the vial 5 to penetrate through the through hole 101. After the head 5a penetrates, the protrusion 102 elastically returns to its original shape, allowing the protrusion 102 to hold the lower end of the head 5a. Therefore, by inserting a hand into the cutout 103 and lifting the cushioning material 100, all of the vials 5 held in the holder 80 inside the box body 10 can be removed.

Next, we will explain how to use the packaging box 1, which consists of the box body 10, the holder 80, and the cushioning material 100.

As shown in FIG. 4, the holder 80 is placed inside the box body 10 assembled as described above, and then the vials 5 are placed in the holding holes 81a of the holder 80. Next, the cushioning material 100 is placed on the vials 5, and the cover wall 41 of the box body 10 is closed.

Specifically, as shown in FIG. 4, the locking piece 71 is folded back on the side insertion piece 45, and the side insertion piece 45 including the locking piece 71 is inserted between the side wall portion 18 and the holder 80. At this time, since the locking piece 71 is provided in the central 2/3 area of the side insertion piece 45, it is easy to insert the locking piece 71 between the side wall portion 18 and the holder 80.

Next, the front insertion piece 44, which is folded back against the lid body 43, is inserted between the front wall 17 and the holder 80. As shown in Figures 2 and 3, when the front insertion piece 44 is inserted until it abuts against the bottom wall 11, the lock piece 71 engages with the lock groove 70. More specifically, the lock piece 71 folded back on the outside of the side insertion piece 45 elastically spreads away from the side insertion piece 45 due to the repulsive force of the court ball itself. Therefore, when the lock piece 71 engages with the lock groove 70, the lock piece 71 collides with the outer plate 18a of the side wall 18 due to the repulsive force described above, making a sound. This sound allows the operator to recognize that the lid wall 41 has been pushed into the correct position.

In this embodiment, the cover wall 41 is further locked by the locking portion 51 after the locking piece 71 is engaged with the locking groove 70 to lock the cover wall 41 so that it cannot be opened. The details are as follows.

First, as shown in Figures 11A and 11B, the folded piece 54 is folded back to the upper side of the locking body 53, and the removal prevention piece 55 is inserted into the through hole 53a. This causes the removal prevention piece 55 to protrude from the upper side of the locking body 53 to the lower side. In this state, the movable piece 52 is rotated forward and the locking body 53 is inserted into the locking hole 50. If insertion is difficult, the locking body 53 can be bent along the fold line 53f to improve insertion workability. As shown in Figure 2, when the removal prevention piece 55 is entirely inserted into the interior through the locking hole 50, the locking by the locking section 51 is completed.

Continuing to refer to FIG. 2, in the sealed state, the repulsive force of the court ball itself causes the folded piece 54, which is folded over on the upper side of the locking body 53, to spread in a direction away from the locking body 53. This spreading of the folded piece 54 is prevented by frictional resistance between the edge of the through hole 53a and the removal prevention piece 55, and by the abutment of the folded piece 54 against the lid body 43. As a result, the removal prevention piece 55 is maintained in a state protruding downward through the through hole 53a.

When attempting to pull the locking body 53 out of the locking hole 50 in this sealed state, the end of the locking body 53 on the front wall 17 side and the removal piece 55 come into contact with the front insertion piece 44 of the cover wall 41. Therefore, the locking body 51 cannot be pulled out of the locking hole 50.

Referring to Figures 2 and 3, the holder 80 holding the vial 5 has protrusions 82a and 83a, so that a buffer space is formed between the bottom wall 11 of the box body 10 and the bottom plate 84 of the holder 80. Moreover, a buffer material 100 that also functions as a removal tool is placed on the vial 5. This provides the packaging box 1 with high buffer properties.

Next, we will explain the correct opening procedure that a worker should perform.

First, insert a finger into the punching portion 68 shown in FIG. 1 and grasp the lower end of the opening operation portion 65. In this embodiment, the opening operation portion 65 is inclined and the lower end of the opening operation portion 65 is located at the outermost position, so that the opening operation portion 65 can be easily grasped even if the operator is wearing gloves. Next, operate the opening operation portion 65 so as to pull it up. As a result, as shown in FIG. 12, the outer plate 17a of the front wall portion 17 is broken along the breaking line 66, and the locking portion 51 and the movable piece 52 can be separated from the front wall portion 17 together with the opening operation portion 65. This releases the lock of the cover wall 41 by the locking portion 51.

Continuing, when the opening operation part 65 is operated upward, as shown in Figs. 8B and 13, the locking piece 71 engages with the locking groove 70, preventing the side insertion piece 45 from being pulled out of the side wall part 18. As a result, as shown in Fig. 12, the lid wall 41 is broken along the fold line (one-sided zipper) 47a which functions as a breaking line. When the entire area between the lid main body 43 and the side insertion piece 45 is broken, the opened state shown in Fig. 14 is reached. Note that the vial 5, holder 80 and cushioning material 100 in the box main body 10 are not shown in Fig. 14.

Next, we will explain an example of unauthorized operation by a third party.

As shown in FIG. 15A, when an attempt is made to pull out the locking body 53 from the locking hole 50, the removal prevention piece 55 comes into contact with the front insertion piece 44 as shown in FIG. 15B. Because the removal prevention piece 55 protrudes downward through the through hole 53a, the dimension in the height direction Z from the upper end of the folded back piece 54 to the lower end of the removal prevention piece 55 is much larger than the gap of the locking hole 50 formed by the cutting lines 50a, 50b. Therefore, the rear wall portion 16 side of the removal prevention piece 55 cannot pass through the locking hole 50.

If the locking body 53 continues to be pulled out, as shown in Figures 16A and 16B, the removal prevention piece 55 bends in a direction generally perpendicular to the folded back piece 54 and comes into surface contact with the front insertion piece 44. The removal prevention piece 55 also abuts against the second hole edge 53c of the through hole 53a, preventing further displacement. As a result, the locking body 53 cannot be pulled out of the locking hole 50. In this way, the locking body 53 firmly locks the cover wall 41, so if the locking body 53 is forcibly pulled out, the locking hole 50 or the locking part 51 will break.

On the other hand, even if the locking body 53 is pushed further into the locking hole 50 in the locked state shown in FIG. 2, the protruding state of the retaining piece 55 downward from the through hole 53a and the abutting state of the folded back piece 54 against the lid body 43 do not change. Therefore, the locking of the locking part 51 to the lid wall 41 cannot be released unless the locking body 53 is forcibly pulled out of the locking hole 50.

Even if someone tries to illegally remove or tamper with the contents between the side wall 18 and the lid body 43, the gap is blocked by the side insertion piece 45. In addition, the lock piece 71 connected to the side insertion piece 45 engages with the lock groove 70, preventing the lid body 43 from floating up from the side wall 18. In addition, since the holder 80 is interposed inside the side insertion piece 45, the side insertion piece 45 will not move inward even if it is pushed inward from the outside. Therefore, the engagement of the lock piece 71 with the lock groove 70 cannot be released. As a result, it is impossible to illegally open the packaging box 1 from the side, and if someone tries to forcefully open it, at least a part of the fold line (break line) 47a will break.

As described above, the packaging box 1 of this embodiment cannot be opened without leaving traces even if unauthorized operations are performed from either the front wall portion 17 side or the side wall portion 18 side, so unauthorized opening can be prevented.

The packaging box 1 configured in this manner has the following features:

The locking section 51 has a folded piece 54 folded back onto the upper side of the locking section body 53, and a removal prevention piece 55 that penetrates the through hole 53a and protrudes downward. Therefore, when the locking section body 53 is inserted into the locking hole 50, the folded piece 54 abuts against the lid body 43, so that the removal prevention piece 55 is maintained in a state protruding downward from the through hole 53a. In this state, if an unauthorized operation is performed to pull the locking section body 53 out of the locking hole 50, the removal prevention piece 55 abuts against the front insertion piece 44, preventing the locking section body 53 from being pulled out of the locking hole 50.

Even if the locking portion main body 53 is pushed further into the locking hole 50, the protruding state of the removal prevention piece 55 downward from the through hole 53a and the abutting state of the folded back piece 54 against the lid main body 43 do not change. Therefore, the locking portion 51 cannot be unlocked from the lid wall 41 unless the locking portion 51 is forcibly pulled out of the locking hole 50. However, if tampering is performed in this way, the locking hole 50 or the locking portion 51 will break. Therefore, tampering with the opening can be prevented, and if tampering is performed, traces of the opening can be easily confirmed.

The front wall 17 is made of a double wall, which improves the rigidity of the outer wall 12. In addition, the movable piece 52 is formed on the outer plate 17a, and the locking body 53, the folded piece 54, and the retaining piece 55 are formed by cutting and raising the inner plate 17b, so the box body 10 (packaging box 1) can be constructed from a single blank.

Since the opening operation part 65 adjacent to the movable piece 52 is formed on the front wall part 17, the locking part 51 and the movable piece 52 can be separated from the front wall part 17 together with the opening operation part 65 by operating the opening operation part 65. This makes it possible to open the lid wall 41 locked by the locking part 51, improving the ease of opening the packaging box 1.

The dimension S1 of the lid body 43 in the front-rear direction X is shorter than the dimension S2 of the outer peripheral wall 12 in the front-rear direction X, and the opening operation part 65 is tilted outward by inserting the locking part body 53 into the locking hole 50. Therefore, even if an operator is wearing gloves, the opening operation part 65 can be easily operated and the packaging box 1 can be opened. This is therefore effective when storing vials 5 that require low-temperature storage in the packaging box 1.

The outer peripheral wall 12 has a side wall portion 18 made of a double wall, and the cover wall 41 has a side insertion piece 45 that is inserted inside the side wall portion 18. A lock groove 70 is provided on the inner plate 18b of the side wall portion 18, and a lock piece 71 is provided on the side insertion piece 45. This prevents both sides of the cover body 43 from floating up from the side wall portion 18, preventing unauthorized removal and tampering from this portion. In addition, the lock piece 71 folded back on the outside of the side insertion piece 45 spreads away from the side insertion piece 45 due to the repulsive force of the court ball itself, making a sound when it engages with the lock groove 70. This allows the worker to recognize the engagement of the lock piece 71 with the lock groove 70, improving the sealing workability.

The lock groove 70 is inverted trapezoidal, the lock piece 71 is trapezoidal, and the width W5 of the upper end of the lock groove 70 is wider than the width W6 of the upper end of the lock piece 71 and narrower than the width W7 of the lower end of the lock piece 71. Therefore, by closing the upper end opening 14 of the outer peripheral wall 12 with the cover wall 41, the lock piece 71 can be engaged with the lock groove 70 to reliably lock the cover wall 41. In addition, if an unauthorized operation is performed in the opening direction of the cover wall 41, the lock piece 71 engages with the lock groove 70, effectively preventing both sides of the cover body 43 from lifting up relative to the side wall portion 18.

The locking groove 70 and the locking piece 71 provide a strong lock, so the fold line (breaking line) 47a on the cover wall 41 can be broken by the action of opening the cover wall 41. Therefore, by holding the opening operation part 65 and operating it upward, the locking part 51 can be separated from the front wall part 17, and then the locking piece 71 and the side insertion piece 45 can be separated from the cover wall 41 and opened. In this way, the packaging box 1 can be opened with a single action, improving convenience.

The side insertion piece 45 is inserted between the side wall portion 18 and the holder 80, so the holder 80 can prevent the side insertion piece 45 from moving inward. This allows the lock piece 71 to reliably engage with the lock groove 70, and also prevents the lock piece 71 from disengaging from the lock groove 70.

The packaging box 1 of this embodiment further has the following features:

The box body 10 and holder 80 are made of coated cardboard, so they can withstand use at low temperatures (frozen).

Adhesive means such as glue or sealing stickers lose their effectiveness at low temperatures and are at risk of peeling off, but the box body 10 and holder 80 of this embodiment can be assembled without gluing by folding the blank at specified locations, so no such problems arise.

The opening in the front wall 17 created by the formation of the locking section 51 and the opening operation section 65 is blocked by the fold-in piece 34, improving the barrier properties and preventing the direct intrusion of foreign objects and cold air.

Of the outer peripheral walls 12, the rear wall 16 is double-walled, the front wall 17 is quadruple-walled, and the side wall 18 is triple-walled, ensuring the rigidity of the packaging box 1. The use of the holder 80 also ensures a double layer and buffer space on the bottom wall 11 side, ensuring buffering for easily broken items such as the vial 5. Furthermore, buffer material 100 is placed on top of the vial 5, improving buffering in all directions.

In the opened state, the side insertion pieces 45 are separated from the lid body 43, but the front insertion piece 44 remains connected to the lid body 43, so the package can be resealed by inserting the front insertion piece 44 inside the front wall portion 17. At this time, the front insertion piece 44 is inserted between the front wall portion 17 and the holder 80, so the resealed state can be reliably maintained.

The through hole 53a has a second hole edge 53c and a protrusion 53e that protrude in the opposite direction to the direction in which the retaining piece 55 is inserted. This ensures ease of insertion of the retaining piece 55 into the through hole 53a, and when inserted, reliably prevents the retaining piece 55 from slipping out of the through hole 53a.

The packaging box 1 of the present invention is not limited to the configuration of the above embodiment, and various modifications are possible.

Various modified examples of the present invention will be described below, but in these descriptions, points that are not specifically mentioned are the same as those in the above embodiment. In the drawings referred to below, elements that are the same as those in the embodiment are given the same reference numerals.

For example, the front wall portion 17 of the outer peripheral wall 12 is a double wall having an outer plate 17a and an inner plate 17b, but it may be a single wall having a single-layer structure.

The dimension of the lid body 43 in the front-rear direction X is made smaller than the dimension of the outer peripheral wall 12 in the front-rear direction X, and the opening operation section 65 is tilted, but the dimensions may be set so that the opening operation section 65 is not tilted.

The lock groove 70 is inverted trapezoidal and the lock piece 71 is trapezoidal, but these shapes can be changed as needed.

A fold line 47a that functions as a break line is provided at the boundary between the lid body 43 and the side insertion piece 45, but this fold line 47a may simply be a general-purpose crease. In other words, the fold line 47a does not have to function as a break line.

The side wall portion 18 of the outer peripheral wall 12 is a double wall having an outer plate 18a and an inner plate 18b, but may be a single wall having a single-layer structure. Also, the lock groove 70 and lock piece 71 on the side wall portion 18 side do not need to be provided.

The number of vials 5 that can be placed in the holder 80 may be up to eight, and the number and placement can be changed as needed.

As shown in FIG. 17, the holder 80 may be provided with a cover 110 that covers the vial 5 together with the cushioning material 100. Specifically, the holder 80 includes a top plate 81, a pair of first side plates 82, a pair of second side plates 83, and a bottom plate 84, similar to the embodiment shown in FIG. 4, and the cover 110 is provided adjacent to both sides of the top plate 81 in the width direction Y.

Referring to FIG. 18, the top plate 81 is connected to the top and bottom of the second side plate 83 via a fold line 88a, as in the embodiment shown in FIG. 9. In FIG. 18, the bottom plate 84 is connected to the lower second side plate 83 via a fold line 89a, and the fold-in piece 92 is connected to the lower side of the bottom plate 84 via a fold line 93a. The fold-in piece 92 has a locking hole 94, and in FIG. 18, the upper second side plate 83 is connected to the locking piece 95 via a fold line 96a. On the other hand, in the holder 83 of the modified example, the first side plate 82 is connected to both sides of the bottom plate 94 via the fold line 111a that constitutes the bent portion 111 shown in FIG. 17, and the fold-in piece 86 is connected to the outside of each first side plate 82 via a fold line 87a.

Referring to FIG. 17, the cover 110 includes a side cover portion 110a and an upper cover portion 110b. The side cover portion 110a is connected to the top plate 81 via a bent portion 112, and extends upward along the XZ plane along the side wall portion 18 shown in FIG. 4. The side cover portion 110a has a total height such that its upper end is located on the upper surface of the cushioning material 100 (see FIG. 4) placed on the vial 5. The upper cover portion 110b is connected to the upper end of the side cover portion 110a via a bent portion 113, and extends along the XY plane along the lid body 43 shown in FIG. 4. The protruding length of the upper cover portion 110b in the width direction Y is a dimension in which the tip portions of the upper cover portion 110b overlap each other.

Referring to FIG. 18, the side cover portion 110a is connected to both sides of the top plate 81 via the fold line 112a that constitutes the fold portion 112, and the upper cover portion 110b is connected to the outside of the side cover portion 110a via the fold line 113a that constitutes the fold portion 113. Both fold lines 112a and 113a are made of lead creases.

In the holder 80 configured in this manner, for example, with only the cover 110 deployed and the other parts assembled, vials 5 are placed in each of the multiple holding holes 81a, and then the cushioning material 100 shown in FIG. 4 is placed on the multiple vials 5. Then, as shown in FIG. 17, the side cover part 110a is folded against the top plate 81, and then the upper cover part 110b is folded against the side cover part 110a. In this state of the holder 80, by gripping both sides from the bottom plate 84 to the upper cover part 110b, the multiple vials 5 and the cushioning material 100 can be stored together in the box body 10 shown in FIG. 4. This is therefore effective when the worker is wearing gloves. In addition, in the sealed state of the packaging box 1 using the modified holder 80, the side insertion piece 45 is inserted between the side wall part 18, as in the holder 80 of the embodiment shown in FIG. 4, and the inward movement of the side insertion piece 45 can be prevented.

On the other hand, depending on the item to be packaged, the packaging box 1 may be constructed using only the box body 10, without using either or both of the holder 80 and the cushioning material 100.

The material from which the box body 10 and the holder 80 are made is not limited to coated cardboard, but may be untreated paperboard or cardboard sheets.

REFERENCE SIGNS LIST 1 Packaging box 5 Vial 5a Head 5b Neck 10 Box body 11 Bottom wall 12 Outer wall 13 Storage section 14 Upper end opening 16 Rear wall 17 Front wall 17a Outer plate 17b Inner plate 18 Side wall 18a Outer plate 18b Inner plate 19 Bent section (rear edge of bottom wall)
19a Folding line 20 Folding portion (front edge of bottom wall)
20a Folding line 21 Folding portion (upper edge of front wall portion)
21a Folding line 22 Folding portion (side edge of bottom wall)
22a fold line 23 fold portion 23a fold line 25 fold-in piece 26a fold line 28 inner wall portion 28a engagement groove 29 fold portion 29a fold line 31 fold-in piece 32 fold portion 32a fold line 34 fold-in piece 35 fold portion 35a fold line 36 protruding piece portion 36a positioning hole 37 fold portion 37a fold line 38 positioning protrusion 39 fold portion 39a fold line 41 cover wall 42 fold portion (upper edge of rear wall)
42a: Folding line 43: Lid body 44: Front insertion piece 45: Side insertion piece 46: Folding portion (front edge of lid body)
46a Folding line 47 Folding portion 47a Folding line (breaking line)
50 Lock hole 50a First cutting line 50b Second cutting line 51 Lock portion 52 Movable piece 53 Lock portion body 53a Through hole 53b First hole edge 53c Second hole edge 53d Third hole edge 53e Projection 53f Folding line 54 Folded piece 55 Anti-removal piece 56 Cutting line 57a Folding line 58 Folding portion (upper edge of movable piece)
58a fold line 59 cut line 59a inclined portion 59b first curved portion 59c second curved portion 59d continuing portion 60 bent portion 60a fold line 61 cut line 62 bent portion 62a fold line 63 cut line 63a first portion 63b second portion 63c third portion 63d continuing portion 65 opening operation portion 66 breaking line 67 cut line 68 punched portion 70 lock groove 71 lock piece 72 bent portion 72a fold line 80 holder 81 top plate 81a retaining hole 82 first side plate 82a protruding piece 83 second side plate 83a protruding piece 84 bottom plate 85 bent portion 85a fold line 86 fold-in piece 87 bent portion 87a Fold line 88 Fold portion 88a Fold line 89 Fold portion 89a Fold line 90 Fold-in piece 91 Fold portion 91a Fold line 92 Fold-in piece 93a Fold line 94 Locking hole 95 Locking piece 96 Fold portion 96a Fold line 100 Cushioning material 101 Through hole 102 Protrusion 103 Notch 110 Cover 110a Side cover portion 110b Upper cover portion 111 Fold portion 111a Fold line 112 Fold portion 112a Fold line 113 Fold portion 113a Fold line

Claims (5)

A paper packaging box,
The bottom wall and
a cylindrical outer peripheral wall having a rear wall portion extending upward from a rear edge of the bottom wall and a pair of side wall portions extending in a direction intersecting the rear wall portion;
a cover wall including a cover body connected to an upper edge of the rear wall portion and closing an upper end opening of the outer peripheral wall, and a pair of side insertion pieces connected to both side edges of the cover body and respectively disposed inside the pair of side wall portions,
Each of the pair of side wall portions is formed of a double wall having an outer plate extending upward from a side edge of the bottom wall and an inner plate disposed inside the outer plate,
A lock groove is provided at the lower end of each of the inner plates of the pair of side wall portions,
The packaging box has a lock piece that is folded back to the outside of the side insertion piece and engages with the lock groove. The lock groove has an inverted trapezoid shape whose width gradually increases from the lower end to the upper end,
The lock piece is trapezoidal in shape with a width gradually decreasing from the bottom end to the top end,
The width of the upper end of the lock groove is wider than the width of the upper end of the lock piece and narrower than the width of the lower end of the lock piece.
The packaging box according to claim 1. The packaging box according to claim 1 or 2, wherein the cover wall has a break line for separating the side insert pieces. a holder disposed on the bottom wall for holding an article;
The side insertion piece is inserted between the side wall portion and the holder.
The packaging box according to claim 1 or 2. The outer peripheral wall has a front wall portion extending upward from a front edge of the bottom wall,
The cover wall has a front insertion piece that is connected to a front edge of the cover body and is inserted into the inside of the front wall portion,
A lock hole is formed in the cover wall,
The packaging box according to claim 1 or 2, wherein the front wall portion is formed with a locking portion that is inserted into the locking hole to lock the lid wall.

Images