JP2024081185A - Packaging Box - Google Patents

Abstract

To provide a packaging box which holds side surfaces of an object to be stored in a cushioning way from four directions, which holds a bottom surface of the object to be stored by having a cushioning property, and which can accommodate different sizes of objects to be stored.SOLUTION: A packaging box includes four side surfaces which are a back surface plate 14, a left side surface plate 16, a front surface plate 18, and a right side surface plate 20 which are assembled in a cylinder, and a gluing piece 22 on one end part. It has an upper lid piece 32 for closing the upper side, and a bottom part 13 for closing the lower side. It includes a front surface plate side partition surface 74 by having a predetermined interval inside the front surface plate 18, and a back surface plate side partition surface 78 by having a predetermined interval inside the back surface plate 14. A space between the front surface plate side partition surface 74 and the back surface plate side partition surface 78 is a storage space 134. The storage space 134 includes a bottom partition surface 102, and an interval between the front surface plate side partition surface 74 and the back surface plate side partition surface 78 is smaller than the outer diameter of the side surface of an object 136 to be stored. When the object 136 to be stored is put in the storage space 134, the front surface plate side partition surface 74 and the back surface plate side partition surface 78 elastically deform after being pressed by the object 136 to be stored, and the object 136 to be stored is held elastically.SELECTED DRAWING: Figure 1

Description

This invention relates to a packaging box that has a cushioning partition integrally formed on the inside of the box body and is used to package bottles and other items.

Conventionally, products such as lotions and medicinal liquids in bottles have been transported, stored, and displayed in paper packaging boxes. These packaging boxes are equipped with cushioning dividers to protect the bottles and other items contained therein and to prevent them from rattling inside.

For example, the paper box with cushioning partitions disclosed in Patent Document 1 has a pair of two-stage cushioning partitions that are parallel to each other and hold the sides of the contents inside the paper box in which the contents are stored, and a lower support piece that supports the bottom surface of the contents is formed below each cushioning partition. The upper and lower stages of the two-stage cushioning partitions are separated by a gap. The cushioning partitions and the lower support piece are separated by a cut line. A slit fold line is provided in the center of the lower stage of the cushioning partition in the vertical direction. This paper box with cushioning partitions is stored by expanding the space between the pair of cushioning partitions and placing the contents, i.e., a bottle. At this time, the lower stage of the cushioning partition is bent outward with the slit fold line as its apex, and elastically abuts against the sides of the bottle from four directions to hold it. The bottom surface of the bottle is also supported by the cross section of the lower support piece.

The packaging box disclosed in Patent Document 2 includes an inner box spaced apart from each inner surface of the outer box, and the inner box has four inner side panels connected via vertical creases and arranged opposite the side panels of the outer box, and an inner bottom panel forming the bottom of the inner side panels. At least one pair of adjacent inner side panels has an extension extending from each of their side edges, and the extension is connected to the inner surface of the outer box via a crease, so that the inner box is supported by the outer box. This paper box contains bottles, which are the contents, inside the inner box, and the bottom of the bottle is supported by the surface of the inner bottom panel.

Japanese Patent Application Laid-Open No. 11-49145 JP 2016-060491 A

In the case of the above background art, in Patent Document 1, the buffer partitions elastically abut and hold the sides of the bottle from four directions, providing cushioning and a high buffering effect, but the bottom of the bottle is supported by the cross section of the lower support piece, providing no cushioning and insufficient buffering effect. In Patent Document 2, the bottom of the bottle is supported by the surface of the inner bottom plate, providing high cushioning. However, the inner box is made large enough to hold the bottle, and the inner side plates of the inner box do not elastically abut against the sides of the bottle, providing insufficient buffering effect against impacts from the side. In addition, the inner box is supported by the outer box via extensions that extend the side edges of a pair of adjacent inner side plates, so the corners are positioned and the shape is not easily deformed, and it cannot accommodate bottles of different diameters.

This invention was made in consideration of the problems in the background art described above, and aims to provide a packaging box that cushions and holds the sides of the contents from four directions, receives the bottom of the contents with a surface that provides cushioning and holds the contents, and can accommodate contents of different sizes.

The present invention relates to a packaging box that is made of a single box-forming piece, has four side surfaces, a back panel, a left panel, a front panel, and a right panel, assembled into a cylinder, and is provided with an adhesive piece at one end of the connecting direction of the four side surfaces, which is glued to the back surface of the other end of the connecting direction of the four side surfaces to hold the cylinder, and is provided with a top cover piece that closes an upper opening end formed by the four side surfaces connected in an assembled state, and a bottom that closes a lower opening end, and the inside of the packaging box is provided with a top cover piece that closes an upper opening end formed by the four side surfaces connected in an assembled state, a front panel side partition surface is provided along the front panel with a predetermined interval therebetween, and a rear panel side partition surface is provided inside the rear panel with a predetermined interval therebetween and along the rear panel, the front panel side partition surface and the rear panel side partition surface face each other with a predetermined interval therebetween, a space having a predetermined interval between the front panel side partition surface and the rear panel side partition surface serves as a storage space for stored items, and a bottom partition surface is provided in the storage space, the bottom partition surface intersecting the front panel side partition surface and the rear panel side partition surface being spaced apart from the bottom,
The distance between the front panel side partition surface and the back panel side partition surface is smaller than the outer diameter of the side surface of the contained item, and when the contained item is placed into the storage space, the front panel side partition surface and the back panel side partition surface are pressed by the side surface of the contained item and elastically deformed, and the packaging box is resiliently held in a cushioning manner by being resiliently sandwiched between the elastically deformed back panel side partition surface and the back panel side partition surface.

The bottom partition surface is provided at the end of the front panel side partition surface or the back panel side partition surface, and the other side edge of the bottom partition surface is provided with abutment pieces that are overlapped with the front panel side partition surface, the back panel side partition surface, or the back surface of the four sides and supported by frictional force, and the bottom partition surface is supported by the front panel side partition surface or the back panel side partition surface and the abutment pieces.

The box-forming piece is provided by connecting the adhesive piece, the back panel, the left panel, the front panel, and the right panel in parallel to each other, and the side edge of the adhesive piece opposite the back panel is provided with the front panel side partition surface, the left panel adhesive portion glued to the back surface of the left panel, and the back panel side partition surface and the right panel adhesive portion glued to the back surface of the right panel with the adhesive piece sandwiched between them, which are connected in sequence and parallel to each other, and the bottom partition surface is connected to the lower side edge of the back panel side partition surface along the connection direction of the left panel adhesive portion and the right panel adhesive portion, and the side edge of the bottom partition surface opposite the back panel side partition surface is connected to a contact piece that overlaps the back surface of the front panel side partition surface and is supported by frictional force.

The bottom is assembled at the same time that the box-forming pieces are glued and folded and the four sides are assembled into a three-dimensional shape.

The packaging box of the present invention can cushion the sides of the contents from four directions and can support the bottom of the contents with a cushioned surface. The partition surfaces that sandwich the contents from both sides elastically deform when pressed by the contents, so it can accommodate contents of different sizes.

1 is a perspective view of a packaging box according to a first embodiment of the present invention; 1A is a longitudinal sectional view showing a packaging box according to a first embodiment of the present invention in an assembled state, and FIG. 1B is a longitudinal sectional view showing a state in which contents are placed inside the packaging box. 1 is a development view of a packaging box according to a first embodiment of the present invention. FIG. 1 is a development view showing an assembled state of a packaging box according to a first embodiment of the present invention. FIG. 1 is a development view showing an assembled state of a packaging box according to a first embodiment of the present invention. FIG. 1 is a development view showing an assembled state of a packaging box according to a first embodiment of the present invention. FIG. 1 is a development view showing an assembled state of a packaging box according to a first embodiment of the present invention. FIG. 1 is a development view showing an assembled state of a packaging box according to a first embodiment of the present invention. FIG. 13A is a longitudinal sectional view showing a packaging box according to a second embodiment of the present invention in an assembled state, and FIG. 13B is a longitudinal sectional view showing a state in which contents are placed inside the packaging box. FIG. 4 is a development view of a packaging box according to a second embodiment of the present invention. FIG. 11 is a development view showing an assembled state of the packaging box according to the second embodiment of the present invention. FIG. 11 is a development view showing an assembled state of the packaging box according to the second embodiment of the present invention.

The following describes an embodiment of the present invention with reference to the drawings. Figures 1 to 8 show a first embodiment of the present invention. The packaging box 10 of this embodiment is a roughly rectangular box body, and is formed by assembling box body forming pieces 12 that are punched integrally from a single blank sheet such as cardboard.

Figure 3 is a development view of the box-forming piece 12 as seen from the front. The box-forming piece 12 is formed by connecting the back panel 14, left panel 16, front panel 18, and right panel 20, which form the four cylindrical side surfaces of the box, in parallel to each other. The back panel 14, left panel 16, front panel 18, and right panel 20 have the same length in the width direction in which they are connected, and the lengths in the connecting direction are long for the back panel 14 and the front panel 18 and approximately equal to each other, and short for the left panel 16 and the right panel 20 and approximately equal to each other. Furthermore, a glued piece 22 is provided on the side edge of the back panel 14, which is glued to the back surface of the right panel 20 when the packaging box 10 is assembled. The glued piece 22, the back panel 14, the left panel 16, the front panel 18, and the right panel 20 are each separated by fold lines 24, 26, 28, and 30.

A rectangular top cover piece 32 is provided at one end of the back panel 14 perpendicular to the direction in which the side panels are joined, separated by a fold line 34. An insert piece 36 is further provided at the end of the top cover piece 32 opposite the fold line 34, separated by a fold line 38. A triangular bottom cover piece 40 is provided at the end of the back panel 14 opposite the fold line 34, separated by a fold line 42, and a square-shaped bottom glued piece 44 is provided at the inclined side edge of the bottom cover piece 40 adjacent to the left panel 16, separated by a fold line 46.

A trapezoidal top flap 48 is provided at the end of the left panel 16 adjacent to the fold line 34 of the back panel 14, separated by a fold line 50. A triangular bottom flap 52 is provided at the end of the left panel 16 opposite the fold line 50, separated by a fold line 54.

At the end 18a of the front panel 18 adjacent to the fold line 50 of the left panel 16, a break line 56 for opening is provided that surrounds the center of the end 18a in a U-shape. The inside of the break line 56 becomes a glued portion 57 for insertion pieces. At the end of the front panel 18 opposite the end 18a, a triangular bottom cover piece 58 of the same shape as the bottom cover piece 40 is provided, separated by a fold line 60, and at the inclined side edge of the bottom cover piece 58 adjacent to the right panel 20, a rectangular bottom glued piece 62 of the same shape as the bottom glued piece 44 is provided, separated by a fold line 64.

A trapezoidal top flap 66 is provided at the end of the right side panel 20 adjacent to the end 18a of the front panel 18, separated by a fold line 68. A triangular bottom flap 70 is provided at the end of the right side panel 20 opposite the fold line 68, separated by a fold line 71.

The length of the adhesive piece 22 perpendicular to the fold line 24 is shorter than that of the back panel 14. As for the length parallel to the fold line 24, the portion connected to the fold line 24 has the same width as the back panel 14, and the side edge 22a opposite the fold line 24 is shorter than the fold line 24. One end 22b that intersects with the fold line 24 is continuous with the fold line 34 of the back panel 14 and parallel to the fold line 34, one end of the other end 22c is continuous with the fold line 42 of the back panel 14, and the other end is continuous with the lower end of the side edge 22a and is inclined with respect to the fold line 42.

The glued piece 22 is provided with a buffer partition piece 72. The partition piece 72 is formed by connecting the front panel side partition surface 74, the left panel glued portion 76, the back panel side partition surface 78, and the right panel glued portion 80 to the glued piece 22 in that order. The connecting direction is parallel to the connecting direction of each side surface. The glued piece 22, the front panel side partition surface 74, the left panel glued portion 76, the back panel side partition surface 78, and the right panel glued portion 80 are each separated by fold lines 82, 84, 86, and 88.

When the packaging box 10 is assembled, the front panel side partition surface 74 is provided on the inside of the front panel 18 with a specified distance therebetween, approximately parallel to the front panel 18, and is a rectangle whose length in the connecting direction with the glued piece 22 is approximately equal to that of the front panel 18 and whose length intersecting the connecting direction with the glued piece 22 is shorter than that of the front panel 18.

The end 74a, which is continuous with the end 22b of the glued piece 22, is approximately parallel to the end 22b, and a recess 75 is formed in the middle of the end 74a, recessed toward the center of the front panel side partition surface 74. The portion of the end 74a on the opposite side of the recess 75 from the glued piece 22, close to the fold line 84, is located slightly moved toward the center of the front panel side partition surface 74. The end 74b on the opposite side to the end 74a is continuous with the end 22c of the glued piece 22, and the portion continuous with the end 22c is inclined with respect to the side edge 22a, while the other portion is approximately perpendicular to the side edge 22a, i.e., approximately parallel to the end 74a.

A left panel adhesive portion 90 is provided on the front panel side partition surface 74 at a portion where it abuts the fold line 84. The left panel adhesive portion 90 is surrounded and separated from the surroundings by the fold line 84 and a U-shaped cut line 92 that is continuous with the fold line 84. The fold line 84 is discontinued at the portion where it abuts the left panel adhesive portion 90, and the left panel adhesive portion 90 and the left panel adhesive portion 76 are continuous. The right panel adhesive portion 90 is provided at a position slightly closer to the end 74a than to the end 74b.

The left side panel adhesive portion 76 is glued to the back surface of the left side panel 16, and is shorter than the left side panel 16 in the direction of connection with the front panel side partition surface 74, and shorter than the adhesive piece 22. The length intersecting the direction of connection with the front panel side partition surface 74 is a rectangle approximately equal to the fold line 84 of the front panel side partition surface 74. The end 76a of the left side panel adhesive portion 76 that continues to the end 74a is approximately parallel to the end 74a, and the end 76b opposite to the end 76a is bent in an inverted L shape, and the part that continues to the end 74b of the front panel side partition surface 74 is parallel to the end 74b and is located on the extension line of the end 74b, and the other parts are bent upwardly of the end 74b as they approach the fold line 86, and are inclined with respect to the extension line of the end 74b.

The rear panel side partition surface 78 is provided on the inside of the rear panel 14 with a predetermined interval therebetween and is approximately parallel to the rear panel 14 when the packaging box 10 is assembled. It is a rectangle whose length in the direction of connection with the left side panel glued portion 76 is approximately equal to that of the rear panel 14 and whose length intersecting the direction of connection with the left side panel glued portion 76 is shorter than that of the rear panel 14. The end 78a of the rear panel side partition surface 78 that continues to the end 76a is approximately parallel to the end 76a, and a recess 94 that is recessed toward the center of the rear panel side partition surface 78 is formed in the middle of the end 78a. The recess 94 is a straight line that is inclined toward the end 78a in the portion close to the fold line 86, and a curved line that protrudes and concaves toward the fold line 86 in the portion close to the fold line 88. The end 78b opposite to the end 78a continues to the end 76b of the left side panel glued portion 76 and is approximately parallel to the end 78a.

A right side panel glued portion 96 is provided on the rear panel side partition surface 78 at a portion where it abuts the fold line 88. The right side panel glued portion 96 is surrounded by the fold line 88 and a U-shaped cut line 98 that is continuous with the fold line 88, separating it from the surrounding area. The fold line 88 is discontinued at the portion where it abuts the right side panel glued portion 96, and the right side panel glued portion 96 and the right side panel glued portion 80 are continuous.

The rear panel side partition surface 78 has a fold line 100 that passes through the center and is approximately parallel to the fold lines 86 and 88. One end of the fold line 100 continues to a deep position approximately in the middle of the recess 94, and the opposite end continues to the end 78b.

At the end 78b of the rear panel side partition surface 78, a bottom partition surface 102 is provided, separated by a fold line 104. A cut line 105 is provided along the fold line 104 near the center of the fold line 104. The cut line 105 intersects and continues with the fold line 100. The bottom partition surface 102 is a deformed pentagon, the side that is in contact with the fold line 104 is the longest, and is formed of two short side edges 102a that intersect the fold line 104 at a substantially right angle, and two side edges 102b, 102c that are continuous with the side edges 102a and intersect each other at an obtuse angle. In other words, the side edges 102b, 102c are located on the opposite side of the rear panel side partition surface 78.

A rectangular abutment piece 106 is provided at the side edge 102c close to the fold line 86, separated by the fold line 108. The abutment piece 106 abuts against the fold line 84 side of the back surface of the front panel side partition surface 74 when the packaging box 10 is assembled, and is a rectangle that is long in the direction perpendicular to the fold line 104, and its longitudinal length is slightly shorter than the distance between the ends 74a and 74b of the front panel side partition surface 74. When the bottom partition surface 102 and the abutment surface 106 are folded back to the back panel side partition surface 78 at the fold line 104, the abutment surface 106 is long enough to be slightly exposed from the recess 94 of the back panel side partition surface 78.

A rectangular abutment piece 110 is also provided on the side edge 102b close to the fold line 88, separated by the fold line 112. The abutment piece 110 abuts against the fold line 82 side of the back surface of the front panel side partition surface 74, and the length of the abutment piece 110 in the protruding direction is slightly shorter than the abutment piece 106, and the width is approximately the same as that of the abutment piece 106. The abutment piece 106 and the abutment piece 110 are separated to form a slit 114, and the ends of the slit 114 reach the corners of the pair of side edges 102b, 102c of the bottom partition surface 102, cutting out the corners in a semicircular shape.

A fan-shaped abutment piece 120 is provided on the side edge 102a of the bottom partition surface 102 on the fold line 88 side, separated by the fold line 122. The abutment piece 120 has a side edge 120a located on an extension of the fold line 104, and the side edge 120a and the fold line 122 are continuous at approximately a right angle, and the opposite ends of the side edge 120a and the fold line 122 are connected by an arc that bulges outward to form a fan shape.

The right side panel glued portion 80 is glued to the back surface of the right side panel 20 with the glued piece 22 sandwiched between them, and its length perpendicular to the fold line 88 is shorter than the glued piece 22 and shorter than the left side panel glued portion 76. As for its length parallel to the fold line 88, the part connected to the fold line 88 has the same width as the rear panel side partition surface 78, and the side edge portion 80a opposite the fold line 88 is shorter than the fold line 88. There is a gap between the right side panel glued portion 80 and the abutment piece 120.

Next, an example of a method for assembling the packaging box 10 of this embodiment will be described. Here, Figure 3 shows the front surface of the box-forming piece 12 of the packaging box 10, and a folding method that makes the front surface of the box-forming piece 12 convex is called a forward folding, and a folding method that makes the back surface convex is called a reverse folding.

First, fold line 104 is folded forward as shown in Figure 4. Note that Figures 4 to 6 show the back side of box-forming piece 12 to make the folding method easier to see. Next, fold line 86 is folded forward as shown in Figure 5, and glue 124 is applied to the surfaces of right side panel glued portions 80, 96. Then, fold line 82 is folded forward as shown in Figure 6, and the surfaces of right side panel glued portions 80 and 96 are glued to the back side of glued piece 22. Then glue 126 is applied to left side panel glued portions 76, 90.

Next, as shown in FIG. 7, the fold lines 42, 54, 60, 71 are folded forward, the fold lines 46, 64 are folded backward, and glue 128, 130 are applied to the backside of the bottom glued pieces 44, 62. Glue 132 is applied to the surface of the glued piece 22. As shown in FIG. 8, the fold line 26 is folded forward, and the left side panel glued parts 76, 90 are glued to the backside of the left side panel 16, and the bottom glued piece 44 is glued to the surface of the bottom flap 52. Furthermore, the fold line 30 is folded forward, and the glued piece 22 is glued to the backside of the right side panel 20, and the bottom glued piece 62 is glued to the surface of the bottom flap 70. As a result, the box body forming piece 12 is in a folded state, and in this state, the packaging box 10 folded by the box body forming piece 12 is shipped from a factory that packages the contents, which are the products. The order of gluing and folding may be other than the above.

Next, in a factory where the contents are stored and packaged, the fold lines 24, 26, 28, and 30 are folded at 90° each to form a rectangular tube. At this time, since the bottom glued pieces 44 and 62 are glued to the bottom flaps 52 and 70, respectively, the fold lines 42, 54, 60, and 71 that were folded in half are automatically pulled up and opened at approximately 90° to form the bottom 13. Then, the fold lines 82, 84, 86, and 88 of the partition piece 72 are folded at 90° each, and as shown in Figures 1 and 2(a), the front panel side partition surface 74 is positioned approximately parallel to the front panel 18 with a predetermined gap inside the front panel 18, the back panel side partition surface 78 is positioned approximately parallel to the back panel 14 with a predetermined gap inside the back panel 14, and the front panel side partition surface 74 and the back panel side partition surface 78 face each other approximately parallel with a gap A, and are assembled three-dimensionally.

The space between the front panel side partition surface 74 and the back panel side partition surface 78, which has a distance A, becomes the storage space 134 for the contents. This completes the assembly of the packaging box 10. As shown in FIG. 2(a), in the assembled state, the bottom partition surface 102 and the abutment pieces 106, 110 are folded back at the fold line 104 and positioned in the storage space 134 between the front panel side partition surface 74 and the back panel side partition surface 78, and the elasticity of the box body forming piece 12 causes the tips of the abutment pieces 106, 110 to approach the end 74a of the front panel side partition surface 74.

In this state, the contents are placed in the packaging box 10. The contents are glass vials 136 containing a medicinal liquid. The outer diameter of the vials 136 is larger than the space A of the storage space 134. The vials 136 are inserted from the bottom 136a along the rear panel side partition surface 78 into the storage space 134 from the upper opening of the packaging box 10, between the rear panel side partition surface 78 and the abutment pieces 110, 106. The abutment pieces 110, 106 are pressed down by the bottom 136a of the vials 136, and are folded from the bottom partition surface 102 at the fold lines 108, 112.

When the vial bottle 136 is inserted further into the storage space 134, the front panel side partition surface 74 and the back panel side partition surface 78 are pushed open by the side surface 136b of the vial bottle 136, elastically deformed, and the central area is pushed open, and as shown in FIG. 2(b), the space A of the storage space 134 expands to space B, which is the same as the outer diameter of the vial bottle 136. The fold lines 104 and fold lines 108, 112 are each folded at 90°, the bottom partition surface 102 is approximately parallel to the bottom 13, and the abutment pieces 106, 110 overlap the back surface of the front panel side partition surface 74 and are supported by frictional force. The abutment piece 120 is overlapped on the back surface of the right side panel 20 with the glued piece 22 in between, and is supported by the glued piece 22 by frictional force. The bottom partition surface 102 is a deformed pentagon that fits into the shape of the front panel side partition surface 74, which has been expanded near the center. The back panel side partition surface 78 is separated from the bottom partition surface 102 by a cutting line 105, and is folded at an obtuse angle along the folding line 100 without any hindrance and expanded. The side surface 136b of the vial bottle 136 is elastically sandwiched between the elastically deformed front panel side partition surface 74 and back panel side partition surface 78, and is cushioned and held from four directions. The bottom 136a of the vial bottle 136 is received by the surface of the bottom partition surface 102 and is held with cushioning properties.

Next, the top flaps 48, 66 are folded forward along the fold lines 50, 68, then the top cover piece 32 is folded forward along the fold line 34, and then the fold line 38 is folded forward again to insert the insert piece 36 inside the front panel 18, and the packaging is completed. The insert piece 36 may be glued to the adhesive portion 57 of the front panel 18. When opening the packaging box 10, the adhesive portion 57 for the insert piece is pressed to cut the break line 56 as shown in FIG. 1.

According to the packaging box 10 of this embodiment, the vial bottle 136, which is the content, is sandwiched from both sides by the front panel side partition surface 74 and the back panel side partition surface 78, which are elastically deformed by being pressed by the side surface 136b of the vial bottle 136, and the side surface 136b is elastically held from four directions by the front panel side partition surface 74 and the back panel side partition surface 78, which are elastically deformed and curved, and the bottom part 136a is received by the bottom partition surface 102 and held with cushioning properties, so that the vial bottle 136 can be packaged in a cushioning manner. The front panel side partition surface 74 and the back panel side partition surface 78, which hold the side surface 136b of the vial bottle 136, are only supported by the adhesive piece 22, the left panel adhesive part 76, and the right panel adhesive part 80, which are continuous with the both side edges, glued to the right panel 20 and the left panel 16, respectively, and can be freely elastically deformed and expanded. Because it can freely elastically deform and expand, it can elastically deform appropriately to fit vials 136 of different sizes, sandwiching the sides 136b and tightly holding them in place, and can be used with packaging boxes 10 of the same size.

The bottom partition surface 102 is partly connected to the rear panel side partition surface 78 by the fold line 104, and the rest is supported by the abutment pieces 106, 110, and 120 by frictional force on the back surface of the front panel side partition surface 74 and the adhesive piece 22, so it can move moderately and can accommodate vials 136 of different sizes, and has high cushioning properties. The bottom partition surface 102 is a deformed pentagon, and fits the shape of the front panel side partition surface 74, which is widened near the center. Since there is a slit 114 between the abutment pieces 106 and 110, the abutment pieces 106 and 110 can elastically deform independently, and can be in close contact with the back surface of the front panel side partition surface 74 regardless of the elastic deformation of the front panel side partition surface 74. Because the contact piece 120 is separated from the right side panel adhesive portion 80, the contact piece 120 can also independently deform elastically and can come into close contact with the back surface of the adhesive piece 22.

By simply inserting the vial bottle 136 along the rear panel side partition surface 78, the side surface 136b of the vial bottle 136 pushes the front panel side partition surface 74 and the rear panel side partition surface 78 apart, elastically deforming them, and the bottom 136a assembles the bottom partition surface 102, allowing for easy storage, and the operation of storing is simple. The bottom 13 is assembled with a single touch, and the partition piece 72 is formed three-dimensionally at the same time as the bottom 13, making manufacturing simple. The partition piece 72 does not come into contact with the folded bottom cover pieces 40, 58 and bottom flaps 52, 70, so there is no interference when the bottom cover pieces 40, 58 and bottom flaps 52, 70 are raised to assemble the bottom 13.

The left panel glueing section 90 for gluing the front panel partition surface 74 and the right panel glueing section 96 for gluing the back panel partition surface 78 are formed by dividing a part of the front panel partition surface 74 and the back panel partition surface 78 with cutting lines 92, 98, so that the area of the left panel glueing section 76 and the right panel glueing section 80 can be increased and glued reliably. When the left panel glueing section 90 and the right panel glueing section 96 are cut off from the front panel partition surface 74 and the back panel partition surface 78, respectively, the area of the front panel partition surface 74 and the back panel partition surface 78 becomes smaller and more prone to elastic deformation. Since a cutting line 105 is provided on the folding line 104 between the back panel partition surface 78, the cutting line 105 opens due to the elastic deformation of the back panel partition surface 78, forming a slit, and the back panel partition surface 78 can be freely elastically deformed. The partition surface 78 on the rear panel side has a central fold line 100 that passes through the center, and the fold line 100 intersects and continues to the cutting line 105, so the partition surface 78 on the rear panel side is easily bent at the fold line 100 and can be easily elastically deformed.

The front panel side partition surface 74 has a recess 75, and the rear panel side partition surface 78 has a recess 94, making it easy to insert and remove the vial 136. There is space between the four sides and the bottom 13 of the packaging box 10, so the vial 136 is not subjected to external impacts. The high cushioning properties allow the vial 136 to be protected even if no package insert for the medicinal liquid contained in the vial 136 is placed inside the packaging box 10.

Next, a second embodiment of the present invention will be described with reference to Figures 9 to 12. Note that the same components as those in the above embodiment are given the same reference numerals and will not be described. The packaging box 138 in this embodiment is a roughly rectangular box, and is formed by assembling box forming pieces 140 that are punched integrally from a blank sheet such as cardboard.

Figure 10 is a development view of the box-forming piece 140 seen from the front, and the glued piece 22 is provided with a buffer partition piece 142. The partition piece 142 is slightly larger in both the length in the direction of connection with the glued piece 22 and the width intersecting the connection direction compared to the partition piece 72 of the first embodiment. The partition piece 142 is formed by connecting the front panel side partition surface 74, the left panel glued portion 76, the back panel side partition surface 78, and the right panel glued portion 80 to the glued piece 22 in that order. The connection direction is parallel to the connection direction of each side surface. The glued piece 22, the front panel side partition surface 74, the left panel glued portion 76, the back panel side partition surface 78, and the right panel glued portion 80 are each divided by fold lines 82, 84, 86, and 88.

At the end 74b of the front panel side partition surface 74, a trapezoidal support piece 144 is provided, separated by a fold line 146. The front panel side partition surface 74 does not have the left side panel glued portion 90 of the first embodiment. The end 76a of the left side panel glued portion 76, which is continuous with the end 74a, is approximately parallel to the end 74a, and the end 76b opposite to the end 76a is a straight line that faces downward of the end 74b as it approaches the fold line 86, and is inclined with respect to the extension line of the end 74b. At the rear panel side partition surface 78, the end 78a, which is continuous with the end 76a of the left side panel glued portion 76, is approximately parallel to the end 76a, and a V-shaped recess 148 is formed in the middle of the end 78a, which is recessed toward the center of the rear panel side partition surface 78. A right side panel adhesive portion 96 is provided on the rear panel side partition surface 78 in a portion that contacts the fold line 88 and is surrounded by a cut line 98. A contact piece 120 is provided on the side edge portion 102a on the fold line 88 side of the bottom partition surface 102, separated by a fold line 122, and a right-angled triangular contact piece 150 is provided on the side edge portion 102a on the fold line 86 side, separated by a fold line 152.

Next, an example of a method for assembling the packaging box 138 of this embodiment will be described. Here, Figure 10 shows the front surface of the box-forming piece 140 of the packaging box 138, and a folding method that makes the front surface of the box-forming piece 140 convex is called a forward folding, and a folding method that makes the back surface convex is called a reverse folding.

First, fold line 104 is folded forward as shown in FIG. 11. Note that FIGS. 11 and 12 show the back of box-forming piece 140 to make the folding method easier to see. Next, fold line 86 is folded forward as shown in FIG. 12, and glue 124 is applied to the surface of right side panel glued portion 80, 96. When folding fold line 86 forward, abutment piece 150 is folded backward from fold line 152 while overlapping with the back of left side panel glued portion 76. From this point on, the assembly method is the same as that shown in FIGS. 6 to 8 for packaging box 10 of the embodiment. As a result, box-forming piece 140 is in a folded state, and in this state, packaging box 138 folded by box-forming piece 140 is shipped from a factory where the contents, which are the merchandise, are packaged.

Next, in a factory where the contents are stored and packaged, the fold lines 24, 26, 28, and 30 are folded at 90° each to form a rectangular tube. At this time, the fold lines 42, 54, 60, and 71 that were folded in half are automatically raised and opened at approximately 90° to form the bottom 13. Then, the fold lines 82, 84, 86, and 88 of the partition piece 142 are folded at 90°, and as shown in FIG. 9(a), the front panel side partition surface 74 is located approximately parallel to the front panel 18 with a predetermined interval inside the front panel 18, and the back panel side partition surface 78 is located approximately parallel to the back panel 14 with a predetermined interval inside the back panel 14, and the front panel side partition surface 74 and the back panel side partition surface 78 are opposed to each other approximately parallel with an interval C, and assembled three-dimensionally. The space between the front panel side partition surface 74 and the back panel side partition surface 78 with the interval C becomes the storage space 134 that stores the contents. This completes the assembly of the packaging box 138. As shown in FIG. 9(a), in the assembled state, the bottom partition surface 102 and the abutment pieces 106, 110 are folded back at the fold line 104 and positioned in the storage space 134 between the front panel side partition surface 74 and the back panel side partition surface 78, and due to the elasticity of the box body forming piece 12, the tips of the abutment pieces 106, 110 are close to the end 74a of the front panel side partition surface 74.

In this state, the vial 154 is placed in the packaging box 138. The outer diameter and height of the vial 154 are larger than those of the vial 136 of the first embodiment, and the outer diameter of the vial 154 is larger than the spacing C of the storage space 134. The vial 154 is inserted from the bottom 154a into the storage space 134 from the upper opening of the packaging box 138, between the rear panel side partition surface 78 and the abutment pieces 110, 106. The abutment pieces 110, 106 are pressed down by the bottom 154a of the vial 154, and are folded from the bottom partition surface 102 at the fold lines 108, 112.

When the vial 154 is inserted further into the storage space 134, the front panel side partition surface 74 and the back panel side partition surface 78 are pressed by the side surface 154b of the vial 154 and elastically deformed, spreading out the center area, and the spacing C of the storage space 134 spreads out to a spacing D equal to the outer diameter of the vial 154, as shown in FIG. 9B. The fold line 104 and the fold lines 108, 112 are each folded at 90°, the bottom partition surface 102 is approximately parallel to the bottom 13, and the abutment pieces 106, 110 overlap the back surface of the front panel side partition surface 74 and are supported by frictional force. The bottom partition surface 102 is continuous with the support piece 144 below the fold line 146. The abutment piece 150 folded over the surface of the bottom partition surface 102 opens at a substantially right angle due to the elasticity of the box forming piece 140, and is placed over the back surface of the left side panel 16 with the left side panel adhesive portion 76 sandwiched between them, and is supported by frictional force on the left side panel 16, with its tip protruding toward the bottom 13. The side surface 154b of the vial bottle 154 is elastically sandwiched between the elastically deformed front panel side partition surface 74 and back panel side partition surface 78, and is cushioned and held from four directions. The bottom 154a of the vial bottle 154 is received by the surface of the bottom partition surface 102 and is held with cushioning properties.

Next, the top flaps 48, 66 are folded forward along the fold lines 50, 68, then the top cover piece 32 is folded forward along the fold line 34, and then the fold line 38 is folded forward and the insert piece 36 is inserted inside the front panel 18, closed, and the packaging is completed.

The packaging box 138 of this embodiment has the same effect as the first embodiment. Furthermore, the bottom partition surface 102 is held by the support piece 144 below the fold line 146, so the support piece 144 is easily bent by the fold line 146 and has good cushioning properties. Since the abutment piece 150 protrudes to the vicinity of the bottom 13, the bottom partition surface 102 connected to the abutment piece 150 is held in an appropriate position, and will not be pushed downward by vibration or the like even if the vial bottle 154 is heavy.

The packaging box of this invention is not limited to the above embodiment. The size and shape of the packaging box can be changed according to the contents. The shapes of the top cover piece and the top flap that close the upper opening, the front panel side partition surface, the back panel side partition surface, the abutting piece, the bottom partition surface, etc. can also be changed as appropriate, and may be other than those mentioned above. The abutting piece that is overlapped on the back surface of the front panel side partition surface may be other than a pair separated by a slit, may be a pair separated by a cutting line in addition to the slit, or may be a single abutting piece that is not separated. The abutting pieces that are overlapped on the back surfaces of the left side panel and the right side panel may not be necessary, but if the contents are large, a pair is provided on both sides to ensure support. The contents can be used for various things other than vials. The material of the box body forming piece can be freely selected from synthetic resin, synthetic resin and paper laminated other than cardboard, etc. The number and length of the fold lines and cutting lines can also be changed as appropriate, and the fold lines may be provided as break lines or the like to make them easier to fold. The bottom part may be something other than one that can be assembled with one touch. There may be a space between the contents and the top cover, or there may be no space and the contents may be in contact with the top cover.

10, 138 Packaging box 12, 140 Box body forming piece 13 Bottom 14 Back panel 16 Left side panel 18 Front panel 20 Right side panel 22 Glued piece 32 Top cover piece 72, 142 Cushioning partition piece 74 Front panel side partition surface 76, 90 Glued portion for left side panel 78 Back panel side partition surface 80, 96 Glued portion for right side panel 102 Bottom partition surface 102a, 102b, 102c Side edge portion 106, 110, 120, 150 Contact piece 134 Storage space 136, 154 Vial bottle

Claims (4)

A packaging box is made up of a single box-forming piece, and has four side surfaces, a back panel, a left panel, a front panel, and a right panel, assembled to a cylinder, and an adhesive piece is provided at one end of the connecting direction of the four side surfaces, which is glued to the back surface of the other end of the connecting direction of the four side surfaces to hold the cylinder, and is provided with a top cover piece for closing an upper opening end formed by the four side surfaces connected in an assembled state, and a bottom for closing a lower opening end,
On the inside of the packaging box, a front panel side partition surface is provided along the front panel with a predetermined interval on the inside of the front panel, and a rear panel side partition surface is provided along the rear panel with a predetermined interval on the inside of the rear panel, the rear panel side partition surface and the front panel side partition surface face each other with a predetermined interval, a space having a predetermined interval between the front panel side partition surface and the rear panel side partition surface becomes a storage space for stored items, and a bottom partition surface intersecting the front panel side partition surface and the rear panel side partition surface is provided in the storage space and spaced apart from the bottom,
A packaging box characterized in that the distance between the front panel side partition surface and the back panel side partition surface is smaller than the outer diameter of the side surface of the contained item, and when the contained item is placed into the storage space, the front panel side partition surface and the back panel side partition surface are pressed by the side surface of the contained item and elastically deformed, and are resiliently sandwiched between the elastically deformed front panel side partition surface and the back panel side partition surface to be held in a cushioning manner. The packaging box according to claim 1, wherein the bottom partition surface is provided at the end of the front panel side partition surface or the back panel side partition surface, and the other side edge of the bottom partition surface is provided with abutment pieces that are overlapped with the front panel side partition surface or the back panel side partition surface or the back surface of the four side surfaces and supported by frictional force, and the bottom partition surface is supported by the front panel side partition surface or the back panel side partition surface and the abutment pieces. The box-forming piece is provided by connecting the adhesive piece, the back panel, the left panel, the front panel, and the right panel in parallel to one another, and on the side edge of the adhesive piece opposite the back panel, the front panel side partition surface, the left panel adhesive portion that is glued to the back surface of the left panel, and the back panel side partition surface, and the right panel adhesive portion that is glued to the back surface of the right panel with the adhesive piece in between are connected in order and parallel to one another,
A packaging box as described in claim 1, characterized in that the bottom partition surface is connected to a lower side edge of the rear panel side partition surface along the connecting direction of the left panel side glued portion and the right panel side glued portion, and a contact piece is connected to a side edge of the bottom partition surface opposite the rear panel side partition surface, which overlaps with the back surface of the front panel side partition surface and is supported by frictional force. The packaging box according to claim 1, wherein the bottom is assembled at the same time as the four side surfaces are assembled into a three-dimensional shape from the state in which the box-forming pieces are glued and folded, and closes the lower open end.

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