Packing materials

Abstract

It makes assembling packaging materials easier. [Solution] The packaging device (10) of the present invention comprises a first side to a fourth side (20a to 20d), a first flap (110) connected to the first to third side (20a to 20c), and a second flap (120) connected to the fourth side (20d). The first flap (110) has a first portion (110a), a second portion (110b) connected to the first portion (110a) and the second side (20b), and a third portion (110c) connected to the second portion (110b) and the third side (20c). The first flap (110) has a first main body portion (112) and a fitting portion (114). The second flap (120) has a second main body (122) and a projection (124) that is fitted into the fitting part (114).

Description

[[Technical Field]]

[0001] The present invention relates to a packaging container. [[Background Art]]

[0002] Conventionally, packaging containers such as corrugated fiberboard boxes are used for packaging articles (for example, Patent Document 1). In the packaging container (packaging box) described in Patent Document 1, an insertion piece is provided on a ceiling flap that serves as one of inner flaps. In the packaging container (packaging box) described in Patent Document 1, the packaging container is assembled by inserting the insertion piece of the ceiling flap serving as an outer flap into an insertion hole of the ceiling flap serving as an inner flap. [[Related Art]] [[Patent Literature]]

[0003] [[Patent Document 1]] Japanese Unexamined Patent Publication No. 7-205954 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]

[0004] However, the packaging container described in Patent Document 1 requires folding and assembling the outer flaps and inner flaps separately, which may take a relatively long time for assembly.

[0005] The present invention has been made in view of the above problem, and an object of the present invention is to provide a packaging container that can be easily assembled. [[Means for Solving the Problem]]

[0006] The packaging device according to the present invention comprises a first side portion, a second side portion connected to the first side portion, a third side portion connected to the second side portion, a fourth side portion connected to the third side portion, a first flap connected to the first side portion, the second side portion, and the third side portion, and a second flap connected to the fourth side portion. The first flap has a first portion connected to the first side portion, a second portion connected to the first portion and the second side portion, and a third portion connected to the second portion and the third side portion. The first flap has a first main body portion and a fitting portion provided on the first main body portion. The second flap has a second main body portion and a projection portion that protrudes from the second main body portion and is fitted into the fitting portion.

[0007] In one embodiment, the first portion has a first region connected to the second portion and a second region connected to the first side, and the third portion has a first region connected to the second portion and a second region connected to the third side.

[0008] In one embodiment, the first portion further has a fold line defining the boundary between the first region and the second region, and the third portion further has a fold line defining the boundary between the first region and the second region.

[0009] In one embodiment, the first portion further comprises a third region located between the first region and the second region, and the third portion further comprises a third region located between the first region and the second region. [Effects of the Invention]

[0010] According to the present invention, the assembly of packaging materials can be made easier. [Brief explanation of the drawing]

[0011] [Figure 1] (a) and (b) are schematic perspective views of the packaging device of this embodiment. [Figure 2] (a) and (b) are schematic perspective views of the packaging of this embodiment before the flap is folded. [Figure 3] This is a schematic unfolded view of the packaging device of this embodiment. [Figure 4] This is a schematic perspective view illustrating the folding process of the first flap of the packaging device of this embodiment. [Figure 5] (a) is a schematic perspective view of the packaging device of this embodiment with the first flap folded, and (b) is a schematic top view of (a). [Figure 6] (a) is a schematic perspective view of the packaging device of this embodiment with the second flap folded, and (b) is a schematic top view of (a). [Figure 7] (a) and (b) are schematic perspective views of the packaging device of this embodiment. [Figure 8] (a) is a schematic top view of the first flap in the packaging device of this embodiment, and (b) is a schematic top view of the second flap in the packaging device of this embodiment. [Figure 9] (a) and (b) are schematic perspective views of the packaging of this embodiment before the flap is folded. [Figure 10] This is a schematic unfolded view of the packaging device of this embodiment. [Figure 11] This is a schematic perspective view illustrating the folding process of the first flap of the packaging device of this embodiment. [Figure 12] This is a schematic perspective view of the packaging device of this embodiment, showing the first flap folded. [Figure 13] This is a schematic unfolded view of the packaging device of this embodiment. [Figure 14] (a) and (b) are schematic perspective views of the packaging device of this embodiment. [Figure 15] (a) and (b) are schematic perspective views of the packaging of this embodiment before the flap is folded. [Figure 16] (a) and (b) are schematic diagrams of the first and third parts of the first flap of the packaging device of this embodiment before the flap is folded. [Figure 17] This is a schematic unfolded view of the packaging device of this embodiment. [Figure 18] It is a schematic perspective view for explaining the folding process of the first flap of the packing implement according to the present embodiment. [Figure 19] It is a schematic perspective view showing the first flap folded in the packing implement according to the present embodiment. MODE FOR CARRYING OUT THE INVENTION

[0012] Hereinafter, a packing implement according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and repeated description thereof will be omitted.

[0013] In the following description, the X-axis direction of the coordinates shown in the drawings may be referred to as the left-right direction (the direction positive along the X-axis as viewed from the origin of the coordinate axes is the right direction), the Y-axis direction may be referred to as the front-rear direction (the direction positive along the Y-axis as viewed from the origin is the rear direction), and the Z-axis direction (the direction perpendicular to the XY plane) may be referred to as the up-down direction (the direction positive along the Z-axis as viewed from the origin is the upward direction).

[0014] First, the packing implement 10 of the present embodiment will be described with reference to FIGS. 1 to 6. FIGS. 1(a) and 1(b) are schematic perspective views of the packing implement 10 of the present embodiment. Specifically, FIGS. 1(a) and 1(b) are perspective views of the packing implement 10 of the present embodiment viewed from different directions. FIGS. 1(a) and 1(b) show the assembled packing implement 10.

[0015] As shown in FIGS. 1(a) and 1(b), the packing implement 10 is capable of packing an object to be packed. The packing implement 10 forms a space in which the object to be packed can be placed. For example, the packing implement 10 packs the object to be packed such that the object to be packed does not fall off the packing implement 10. For example, the packing implement 10 packs the object to be packed such that the object to be packed is not exposed from the outside of the packing implement 10. However, the object to be packed may be partially exposed from the outside of the packing implement 10.

[0016] The packing implement 10 is box-shaped. For example, the packing implement 10 has a hollow rectangular parallelepiped shape. The shape of the packing implement 10 is not limited to the hollow rectangular parallelepiped shape, and may be another shape. The packing implement 10 is made of, for example, corrugated cardboard.

[0017] The packaging device 10 comprises a side surface 20, a covering surface 100, and a covering surface 200. The covering surface 200 faces the covering surface 100. The covering surface 100 is located on the +Z side relative to the side surface 20. The covering surface 200 is located on the -Z side relative to the side surface 20.

[0018] The side surface 20 surrounds the periphery. The side surface 20 is annular. For example, the side surface 20 is rectangular in top view.

[0019] The covering surface 100 covers the side surface 20 from the +Z direction. More specifically, the covering surface 100 covers the space defined by the side surface 20 from the +Z direction. The covering surface 200 also covers the side surface 20 from the -Z direction. The covering surface 200 covers the space defined by the side surface 20 from the -Z direction. Note that the covering surface 100 and the covering surface 200 do not need to cover the entire space defined by the side surface 20.

[0020] Typically, the covering surface 200 is positioned below the covering surface 100 in the direction of gravity. For example, if an object is placed inside the packaging 10, the object may be supported by the covering surface 200.

[0021] The side surface 20 has a first side surface 20a, a second side surface 20b, a third side surface 20c, and a fourth side surface 20d. The first side surface 20a is located on the -Y direction side. The second side surface 20b is located on the -X direction side. The second side surface 20b is connected to the first side surface 20a and folded. The third side surface 20c is located on the +Y direction side. The third side surface 20c is connected to the second side surface 20b and folded. The fourth side surface 20d is located on the +X direction side. The fourth side surface 20d is connected to the third side surface 20c and folded. The first side surface 20a faces the third side surface 20c. The second side surface 20b faces the fourth side surface 20d.

[0022] The covering surface 100 is located on the +Z direction side with respect to the side surface 20. The covering surface 100 covers the opening portion of the side surface 20.

[0023] The covering surface 100 consists of flaps 110 and 120. Flaps 110 and 120 are located on the +Z side relative to the side surface 20. Flaps 110 and 120 are connected and fold relative to the side surface 20.

[0024] The flap 110 is connected to the first side portion 20a to the third side portion 20c. The flap 110 bends relative to the first side portion 20a to the third side portion 20c.

[0025] The flap 120 connects to the fourth side 20d. The flap 120 folds relative to the fourth side 20d.

[0026] The covering surface 100 is formed by the bending of flaps 110 and 120. In this specification, flap 110 may be referred to as the first flap, and flap 120 may be referred to as the second flap.

[0027] The covering surface 200 is located on the -Z direction side with respect to the side surface 20. The covering surface 200 covers the opening portion of the side surface 20.

[0028] The covering surface 200 consists of flaps 210 (see Figure 2), 220, 230 (see Figure 2), and 240. Flaps 210 to 240 are connected to the side surface 20 and fold.

[0029] The flaps 210 to 240 are connected to the first side portion 20a to the fourth side portion 20d, respectively. The flaps 210 to 240 are bent relative to the first side portion 20a to the fourth side portion 20d, respectively. The bending of the flaps 210 to 240 forms the covering surface 200.

[0030] Thus, in the packaging device 10, the covering surface 100 is formed from flaps 110 and 120, and the covering surface 200 is formed from flaps 210 to 240. The packaging device 10 can be assembled by folding flaps 110, 120 and 210 to 240 relative to the side surface 20.

[0031] The flap 110 has a main body 112 and a fitting portion 114. The main body 112 is connected to the first side portion 20a to the third side portion 20c. The fitting portion 114 is located on the +X side of the main body 112. For example, the fitting portion 114 is a recess. Alternatively, the fitting portion 114 may be an opening. Here, the fitting portion 114 is recessed relative to the main body 112.

[0032] The flap 120 has a main body 122 and a projection 124. The main body 122 is connected to the fourth side 20d. The projection 124 protrudes from the main body 122. The projection 124 is located on the -X side of the main body 122.

[0033] The projection 124 of the flap 120 is fitted into the fitting portion 114 of the flap 110. By fitting the projection 124 of the flap 120 into the fitting portion 114 of the flap 110, the flap 120 is closed to the flap 110. This allows a covering surface 100 to be formed on the packaging device 10. In this specification, the main body portion 112 of the flap 110 may be referred to as the first main body portion, and the main body portion 122 of the flap 120 may be referred to as the second main body portion.

[0034] The flaps 210 to 240 can be folded toward the first side portion 20a to the fourth side portion 20d, respectively. After folding flaps 210 and 230 toward the first side portion 20a and the third side portion 20c, respectively, the covering surface 200 can be formed on the packaging device 10 by folding flaps 220 and 240 toward the second side portion 20b and the fourth side portion 20d, respectively.

[0035] Next, the packaging device 10 of this embodiment will be described with reference to Figures 1 and 2. Figures 2(a) and 2(b) are schematic perspective views of the packaging device 10 of this embodiment before the flaps 110, 120 and flaps 210-240 are folded. Note that Figures 1(a) and 1(b) show the assembled packaging device 10, while Figures 2(a) and 2(b) show the packaging device 10 before the flaps 110, 120 and 210-240 are folded.

[0036] As shown in Figures 2(a) and 2(b), the packaging device 10 comprises a side surface 20 and flaps 110, 120, 210, 220, 230, and 240. Flaps 110 and 120 are located on one side of the side surface 20, while flaps 210-240 are located on the other side of the side surface 20.

[0037] For example, flaps 110 and 120 are located on the +Z side relative to the side surface 20. Flaps 110 and 120 are connected to the side surface 20 and can be folded.

[0038] The side surface 20 has a first side portion 20a, a second side portion 20b, a third side portion 20c, and a fourth side portion 20d. The first side portion 20a is located on the -Y direction side, the second side portion 20b is located on the -X direction side, the third side portion 20c is located on the +Y direction side, and the fourth side portion 20d is located on the +X direction side.

[0039] The flap 110 is connected to the first side portion 20a to the third side portion 20c of the side portion 20. The flap 120 is connected to the fourth side portion 20d of the side portion 20.

[0040] The flap 110 has a first part 110a, a second part 110b, and a third part 110c. The first part 110a is located on the -Y direction side. The second part 110b is located on the -X direction side. The third part 110c is located on the +Y direction side. The flap 120 is located on the +X direction side.

[0041] The first portion 110a is connected to the first side portion 20a of the side surface 20. The first portion 110a is foldable relative to the first side portion 20a of the side surface 20.

[0042] The second portion 110b connects to the second side portion 20b of the side surface 20. The second portion 110b is foldable relative to the second side portion 20b of the side surface 20.

[0043] The third portion 110c connects to the third side portion 20c of the side 20. The third portion 110c is foldable relative to the third side portion 20c of the side 20.

[0044] In the flap 110, the second portion 110b is connected to the first portion 110a and the third portion 110c, respectively. The second portion 110b is directly connected to the first portion 110a. Also, the second portion 110b is directly connected to the third portion 110c.

[0045] Therefore, in the flap 110, the first portion 110a to the third portion 110c can be folded in conjunction with the first side portion 20a to the third side portion 20c of the side 20. For example, when the second portion 110b is folded with respect to the second side portion 20b of the side 20, the first portion 110a and the third portion 110c can be folded in conjunction with the first side portion 20a and the third side portion 20c of the side 20, respectively.

[0046] The flap 120 separates from the flap 110. The flap 120 connects to the fourth side portion 20d of the side portion 20. The flap 120 is foldable relative to the fourth side portion 20d of the side portion 20. The flap 120 can be folded independently of the folding of the flap 110.

[0047] In the flap 110, the first portion 110a has a main body portion 112a and a folding assist portion 116a. The main body portion 112a is connected to the first side portion 20a. The first portion 110a is foldable in conjunction with the second portion 110b and is also foldable relative to the first side portion 20a.

[0048] The bending assist portion 116a is located on the opposite side of the main body portion 112a from the first side portion 20a. The bending assist portion 116a allows the first portion 110a, which connects to the second portion 110b, to be easily bent relative to the first side portion 20a. In this case, the bending assist portion 116a is recessed relative to the main body portion 112a.

[0049] The second part 110b has a main body 112b and a fitting portion 114. The fitting portion 114 is located on the opposite side of the second side portion 20b from the main body 112b. The fitting portion 114 is recessed relative to the main body 112b. The projection 124 of the flap 120 is fitted into the fitting portion 114.

[0050] The third part 110c has a main body 112c and a folding assist part 116c. The main body 112c is connected to the third side part 20c. The third part 110c is foldable in conjunction with the second part 110b and is also foldable relative to the third side part 20c.

[0051] The bending assist portion 116c is located on the opposite side from the third side portion 20c relative to the main body portion 112c. The bending assist portion 116c allows the third portion 110c, which connects to the second portion 110b, to be easily bent relative to the third side portion 20c. In this case, the bending assist portion 116c is recessed relative to the main body portion 112c.

[0052] The main body 112 of the flap 110 is composed of the main body 112a of the first part 110a, the main body 112b of the second part 110b, and the main body 112c of the third part 110c. Therefore, the main body 112 has main body 112a, main body 112b, and main body 112c. Main body 112b is connected to main body 112a. Main body 112b is directly connected to main body 112a. Also, main body 112b is connected to main body 112c. Main body 112b is directly connected to main body 112c.

[0053] The first portion 110a is foldably connected to the first side portion 20a. The first portion 110a is connected to the second portion 110b while being separated from the flap 120. The first portion 110a is foldable relative to the first side portion 20a in conjunction with the second portion 110b. When the first portion 110a is folded relative to the first side portion 20a, the first portion 110a is positioned on the -Z side of the second portion 110b. Then, when the flap 120 is folded relative to the fourth side portion 20d, the second portion 110b is sandwiched between the first portion 110a and the flap 120.

[0054] The second portion 110b is foldably connected to the second side portion 20b. The second portion 110b is located between the first portion 110a and the third portion 110c. The second portion 110b is connected to the first portion 110a and the third portion 110c, respectively. The second portion 110b is foldable relative to the second side portion 20b in conjunction with the first portion 110a and the third portion 110c, respectively.

[0055] The third section 110c is foldably connected to the third side section 20c. The third section 110c is connected to the second section 110b while being separated from the flap 120. The third section 110c is foldable toward the third side section 20c in conjunction with the second section 110b. When the third section 110c is folded toward the third side section 20c, the third section 110c is positioned on the -Z side of the second section 110b. Subsequently, when the flap 120 is folded toward the fourth side section 20d, the second section 110b is sandwiched between the third section 110c and the flap 120.

[0056] The flap 120 is foldably connected to the fourth side portion 20d. The flap 120 is located between the first portion 110a and the third portion 110c of the flap 110. The flap 120 is separated from each of the first portion 110a and the third portion 110c, and the flap 120 is foldable to the fourth side portion 20d independently of each of the first portion 110a and the third portion 110c.

[0057] The covering surface 100 is formed by folding flaps 110 and 120. Typically, at least a portion of the first portion 110a and the third portion 110c of flap 110 becomes an inner flap, and the second portion 110b and flap 120 become an outer flap.

[0058] The first portion 110a has a first region 110a1 that is foldable in connection with the second portion 110b, and a first region 110a2 that is foldable in connection with the first side portion 20a. The first region 110a1 and the second region 110a2 are foldable in different directions from each other. The first region 110a1 folds so as to overlap with the second portion 110b as the second portion 110b folds in connection with the second side portion 20b. Similarly, the second region 110a2 folds so as to overlap with the first region 110a1 as the first region 110a1 folds. At this time, the second region 110a2 is located on the -Z side of the first region 110a1.

[0059] Here, the first portion 110a further has a fold line 110af that defines the boundary between the first region 110a1 and the second region 110a2. For example, the fold line 110af may be provided with a fold, perforation, or cut.

[0060] The bending assist portion 116a assists in the bending of the first portion 110a. For example, the bending assist portion 116a assists in the bending of the first portion 110a along the fold line 110af. The bending assist portion 116a is located on the opposite side of the first side portion 20a from the main body portion 112a. Here, the bending assist portion 116a is recessed relative to the main body portion 112a. Typically, the bending assist portion 116a is close to the fold line 110af. Preferably, the bending assist portion 116a is in contact with the fold line 110af.

[0061] When the flap 110 is folded relative to the side 20, the first portion 110a can be folded along the fold line 110af. At this time, the first region 110a1 of the first portion 110a moves in conjunction with the second portion 110b, and the second region 110a2 of the first portion 110a folds relative to the first side 20a. As a result, the first region 110a1 of the first portion 110a overlaps with the second region 110a2, and the first region 110a1 is sandwiched between the second portion 110b and the second region 110a2.

[0062] Similarly, the third portion 110c has a first region 110c1 that is foldable in connection with the second portion 110b, and a second region 110c2 that is foldable in connection with the third side portion 20c. The first region 110c1 and the second region 110c2 are foldable in different directions from each other. The first region 110c1 folds so as to overlap with the second portion 110b as the second portion 110b folds in connection with the second side portion 20b. The second region 110c2 also folds so as to overlap with the first region 110c1 as the first region 110c1 folds. At this time, the second region 110c2 is located on the -Z side of the first region 110c1.

[0063] Here, the third portion 110c further includes a fold line 110cf that defines the boundary between the first region 110c1 and the second region 110c2. For example, the fold line 110cf may be provided with a fold, perforation, or cut.

[0064] The bending assist portion 116c assists in the bending of the third portion 110c. For example, the bending assist portion 116c assists in the bending of the third portion 110c along the fold line 110cf. The bending assist portion 116c is located on the opposite side of the third side portion 20c from the main body portion 112c. Here, the bending assist portion 116c is recessed relative to the main body portion 112c. Typically, the bending assist portion 116c is close to the fold line 110cf. Preferably, the bending assist portion 116c is in contact with the fold line 110cf.

[0065] When the flap 110 is folded relative to the side 20, the third portion 110c folds along the fold line 110cf. At this time, the first region 110c1 of the third portion 110c moves in conjunction with the second portion 110b, and the second region 110c2 of the third portion 110c folds relative to the third side 20c. As a result, the first region 110c1 of the third portion 110c overlaps with the second region 110c2, and the first region 110c1 is sandwiched between the second portion 110b and the second region 110c2.

[0066] The flaps 210-240 are located on the -Z side relative to the side 20. The flaps 210-240 can be folded in conjunction with the side 20.

[0067] Flap 210 is located on the -Y side, flap 220 is located on the -X side, flap 230 is located on the +Y side, and flap 240 is located on the +X side. Flap 210 faces flap 230. Flap 220 faces flap 240.

[0068] The flaps 210 to 240 are connected to the first side portion 20a to the fourth side portion 20d, respectively. The flaps 210 to 240 are bent relative to the first side portion 20a to the fourth side portion 20d, respectively. The bending of the flaps 210 to 240 forms the covering surface 200.

[0069] The flap 210 is located on the -Z side relative to the first side portion 20a and connects to the first side portion 20a of the side surface 20. The flap 210 is foldable relative to the first side portion 20a of the side surface 20. The flap 210 is located between the flap 220 and the flap 240.

[0070] The flap 220 is located on the -Z side relative to the second side portion 20b and connects to the second side portion 20b of the side portion 20. The flap 220 is foldable relative to the second side portion 20b of the side portion 20. The flap 220 is located between the flap 210 and the flap 230.

[0071] The flap 230 is located on the -Z side relative to the third side portion 20c and connects to the third side portion 20c of the side portion 20. The flap 230 is foldable relative to the third side portion 20c of the side portion 20. The flap 230 is located between the flap 220 and the flap 240.

[0072] The flap 240 is located on the -Z side relative to the fourth side portion 20d and connects to the fourth side portion 20d of the side portion 20. The flap 240 is foldable relative to the fourth side portion 20d of the side portion 20. The flap 240 is located between the flap 210 and the flap 230.

[0073] Each of the flaps 210-240 is separate from the others. Each of the flaps 210-240 can be folded independently of the folding of the other flaps 210-240.

[0074] The flaps 210-240 constitute the covering surface 200. Typically, flaps 210 and 230 are inner flaps, and flaps 220 and 240 are outer flaps.

[0075] In the packaging device 10 of this embodiment, as the second portion 110b is folded inward toward the side surface 20 relative to the second side surface 20b, the first portion 110a and the third portion 110c of the flap 110 fold toward the first side surface 20a and the third side surface 20c in conjunction with the second portion 110b. As a result, the second portion 110b folds almost perpendicular to the second side surface 20b.

[0076] Subsequently, as the flap 120 is folded inward, the state changes from one where at least a portion of the lower surface (-Z direction side) of the tip of the projection 124 is in contact with the upper surface (+Z direction side) of the main body 112, to a state where at least a portion of the upper surface of the tip of the projection 124 is in contact with the lower surface of the main body 112, as the tip of the projection 124 passes through the fitting portion 114 and at least a portion of the projection 124 is fitted into the fitting portion 114. This allows the projection 124 of the flap 120 to be easily fitted into the fitting portion 114 of the flap 110.

[0077] Next, the packaging device 10 of this embodiment will be described with reference to Figures 1 to 3. Figure 3 is a schematic unfolded view of the packaging device 10 of this embodiment.

[0078] As shown in Figure 3, the packaging 10 comprises a first side portion 20a, a second side portion 20b, a third side portion 20c, a fourth side portion 20d, a flap 110, a flap 120, a flap 210, a flap 220, a flap 230, a flap 240, and an adhesive tab 310. The packaging 10 can be formed by cutting out a sheet of approximately constant thickness (for example, corrugated cardboard).

[0079] In the unfolded view, the fourth side 20d, the first side 20a, the second side 20b, and the third side 20c are positioned in a sequential order in one direction. The first side 20a is connected to the second side 20b and the fourth side 20d, respectively. The second side 20b is connected to the first side 20a and the third side 20c, respectively. The first side 20a, the second side 20b, the third side 20c, and the fourth side 20d constitute the side surface 20.

[0080] Flaps 110 and 120 are located on one side of the side 20. Flaps 210-240 are located on the other side of the side 20.

[0081] The flap 110 has a main body portion 112 and a fitting portion 114. The fitting portion 114 is recessed relative to the main body portion 112. The fitting portion 114 is located on the side opposite to the side 20 relative to the main body portion 112.

[0082] The flap 110 has a first portion 110a, a second portion 110b, and a third portion 110c. The first portion 110a, the second portion 110b, and the third portion 110c are connected to the first to third side portions 20a to 20c, respectively. The first portion 110a, the second portion 110b, and the third portion 110c of the flap 110 are arranged sequentially in one direction.

[0083] In the flap 110, the first part 110a, the second part 110b, and the third part 110c are connected. The second part 110b is located between the first part 110a and the third part 110c. The second part 110b is connected to both the first part 110a and the third part 110c. The second part 110b is directly connected to the first part 110a. Also, the second part 110b is directly connected to the third part 110c.

[0084] The first part 110a has a main body 112a and a bending assist part 116a. The main body 112a is connected to the first side part 20a. The bending assist part 116a is recessed relative to the main body 112a.

[0085] The second part 110b has a main body 112b and a fitting part 114. The main body 112b is connected to the second side part 20b. The fitting part 114 is recessed relative to the main body 112b. The projection 124 of the flap 120 is fitted into the fitting part 114.

[0086] The third part 110c has a main body 112c and a bending assist part 116c. The main body 112c is connected to the third side part 20c. The bending assist part 116c is recessed relative to the main body 112c.

[0087] The main body portion 112 of the flap 110 is formed by the main body portion 112a of the first part 110a, the main body portion 112b of the second part 110b, and the main body portion 112c of the third part 110c. In the unfolded view, the main body portion 112a, the main body portion 112b, and the main body portion 112c are arranged in order in one direction.

[0088] The flap 120 is connected to the fourth side portion 20d. The flap 120 has a main body portion 122 and a projection portion 124. The main body portion 122 is connected to the fourth side portion 20d. The projection portion 124 protrudes from the main body portion 122. The projection portion 124 is located on the opposite side of the main body portion 122 from the portion to which the fourth side portion 20d is connected.

[0089] The flap 110 has a fold line 110s located between the first portion 110a and the second portion 110b. For example, when assembling the packaging 10, the fold line 110s located between the first portion 110a and the second portion 110b is folded. Here, the fold line 110s extends from one end of the first portion 110a and the second portion 110b to the other end of the first portion 110a and the second portion 110b. Thus, the first portion 110a and the second portion 110b are connected to each other from end to end.

[0090] Furthermore, the flap 110 has a fold line 110t located between the second portion 110b and the third portion 110c. For example, when assembling the packaging 10, the fold line 110t located between the second portion 110b and the third portion 110c is folded. Here, the fold line 110t extends from one end of the second portion 110b and the third portion 110c to the other end of the second portion 110b and the third portion 110c. Thus, the second portion 110b and the third portion 110c are connected to each other from end to end.

[0091] Thus, the flap 110 has a fold line 110s located between the first portion 110a and the second portion 110b, extending from one end of the first portion 110a and the second portion 110b to the other end of the first portion 110a and the second portion 110b, and a fold line 110t located between the second portion 110b and the third portion 110c, extending from one end of the second portion 110b and the third portion 110c to the other end of the second portion 110b and the third portion 110c.

[0092] The adhesive tab 310 connects to the fourth side portion 20d of the side portion 20. The adhesive tab 310 is positioned in the same direction as the first side portion 20a, second side portion 20b, third side portion 20c, and fourth side portion 20d of the side portion 20.

[0093] The adhesive tab 310 is located on the opposite side from the first side 20a to the fourth side 20d. The adhesive tab 310 is attached to the third side 20c. The attachment of the adhesive tab 310 to the third side 20c forms an annular side surface 20.

[0094] The flaps 210-240 are connected to the first side section 20a-4th side section 20d, respectively. The flaps 240, 210, 220, and 230 are positioned in a sequential order in one direction. Each of the flaps 210-240 is separated from the others.

[0095] Next, the assembly of the packaging device 10 of this embodiment will be described with reference to Figures 1 to 6. Figures 4 to 6 are schematic perspective views illustrating the assembly of the packaging device 10 of this embodiment. Figure 4 is a schematic perspective view illustrating the folding process of the flap 110 of the packaging device 10 of this embodiment. Figure 5(a) is a schematic perspective view of the packaging device 10 of this embodiment with the flap 110 folded, and Figure 5(b) is a schematic top view of Figure 5(a). Note that in Figure 5(b), only the flap 110 is shown to avoid making the drawing excessively complex. Figure 6(a) is a schematic perspective view of the packaging device 10 of this embodiment with the flap 120 folded, and Figure 6(b) is a schematic top view of Figure 6(a).

[0096] As shown in Figure 4, the adhesive tab 310 (Figure 3) is attached to the third side portion 20c to form an annular side portion 20, and the flaps 210 to 240 are bent relative to the side portion 20 to form a covering surface 200. In detail, flaps 210 and 230 are bent relative to the first side portion 20a and the third side portion 20c, respectively. Then, flaps 220 and 240 are bent relative to the second side portion 20b and the fourth side portion 20d, respectively. This allows the covering surface 200 to be formed in the packaging device 10.

[0097] Furthermore, when the second portion 110b of the flap 110 is folded relative to the side portion 20b, the first portion 110a and the third portion 110c fold in conjunction with the second portion 110b. Here, the first portion 110a folds along the fold line 110af in conjunction with the second portion 110b. The first region 110a1 of the first portion 110a folds in conjunction with the second portion 110b, and the second region 110a2 of the first portion 110a folds relative to the first side portion 20a.

[0098] Furthermore, the third section 110c bends at the fold line 110cf in conjunction with the second section 110b. The first region 110c1 of the third section 110c bends in conjunction with the second section 110b, and the second region 110c2 of the third section 110c bends relative to the third side section 20c.

[0099] As shown in Figure 5(a), when the second portion 110b is further bent relative to the side portion 20b, the first region 110a1 of the first portion 110a overlaps with the second region 110a2, and the first region 110a1 is sandwiched between the second portion 110b and the second region 110a2. Similarly, the first region 110c1 of the third portion 110c overlaps with the second region 110c2, and the first region 110c1 is sandwiched between the second portion 110b and the second region 110c2.

[0100] In this way, in the flap 110, the first part 110a and the third part 110c fold in conjunction with the second part 110b, and the second part 110b overlaps with the first part 110a and the third part 110c.

[0101] As shown in Figure 5(b), the second portion 110b overlaps with parts of the first portion 110a and the third portion 110c. The second portion 110b is located on the +Z side relative to the first portion 110a and the third portion 110c. The second portion 110b covers the -X side of the opening of the side surface 20. The first portion 110a covers parts of the -Y side and the +X side of the opening of the side surface 20. The third portion 110c covers parts of the +Y side and the +X side of the opening of the side surface 20.

[0102] As shown in Figure 6(a), the flap 120 is folded relative to the side portion 20d. As the flap 120 is folded inward, at least a portion of the lower surface (-Z direction side) of the tip of the projection 124 of the flap 120 comes into contact with the upper surface (+Z direction side) of the main body portion 112.

[0103] As shown in Figure 6(b), the flap 120 overlaps with the flap 110, and the flap 120 covers the +X side of the opening on the side surface 20. More specifically, the flap 120 overlaps with the portion of the first part 110a of the flap 110 that is not covered by the second part 110b. Also, the flap 120 overlaps with the portion of the third part 110c of the flap 110 that is not covered by the second part 110b. Furthermore, the -X side end of the flap 120 overlaps with the +X side end of the fitting portion 114 and the main body portion 112b of the second part 110b of the flap 110.

[0104] In a top view, the length L1 along the X direction of the portion where the lower surface (-Z direction side) of the projection 124 contacts the upper surface (+Z direction side) of the flap 110 is shorter than the length L2 along the X direction of the fitting portion 114.

[0105] Subsequently, force is applied to the projection 124 of the flap 120 against the fitting portion 114 of the flap 110, causing the projection 124 of the flap 120 to fit into the fitting portion 114 of the flap 110. In this case, the second portion 110b of the flap 110 and the flap 120 sink in the -Z direction, the tip of the projection 124 passes through the fitting portion 114, and at least a part of the projection 124 is fitted into the fitting portion 114, resulting in a state where at least a part of the upper surface (the +Z side) of the tip of the projection 124 is in contact with the lower surface (-Z side) of the main body 112. At this time, in a top view, the length L1 along the X direction of the portion where the upper surface (+Z side) of the projection 124 contacts the lower surface (-Z side) of the flap 110 is shorter than the length L2 along the X direction of the fitting portion 114. This allows the projection 124 of the flap 120 to be easily fitted into the fitting portion 114 of the flap 110. More specifically, by pressing the flap 120 against the flap 110 with a relatively small force for a relatively short time, the projection 124 of the flap 120 can be easily fitted into the fitting portion 114 of the flap 110.

[0106] As described above, the packaging device 10 of this embodiment can be assembled. According to this embodiment, since the flap 110 is foldably connected to the first side portion 20a, the second side portion 20b, and the third side portion 20c of the side portion 20, the flap 110 can be folded relative to the side portion 20 at once. In detail, since the first portion 110a to the third portion 110c of the flap 110 are foldably connected to the first side portion 20a, the second side portion 20b, and the third side portion 20c of the side portion 20, the flap 110 can be folded relative to the first side portion 20a, the second side portion 20b, and the third side portion 20c of the side portion 20 at once. Furthermore, by folding the flap 120 relative to the fourth side portion 20d of the side portion 20, the projection 124 of the flap 120 can be fitted into the fitting portion 114 of the flap 110.

[0107] In the above description with reference to Figures 1 to 6, the covering surface 200 of the packaging device 10 was positioned vertically below the covering surface 100, but this embodiment is not limited to this. The covering surface 100 may also be positioned vertically below the covering surface 200. In this case, the projection 124 of the flap 120 may be fitted into the fitting portion 114 of the flap 110 on the vertically lower covering surface of the packaging device 10.

[0108] The packaging device 10 of this embodiment includes a first side portion 20a, a second side portion 20b connected to the first side portion 20a, a third side portion 20c connected to the second side portion 20b, a fourth side portion 20d connected to the third side portion 20c, a flap 110 that connects to and folds relative to the first side portion 20a, the second side portion 20b, and the third side portion 20c, and a flap 120 that connects to and folds relative to the fourth side portion 20d.

[0109] The flap 110 has a first portion 110a connected to the first side portion 20a, a second portion 110b connected to the first portion 110a and the second side portion 20b, and a third portion 110c connected to the second portion 110b and the third side portion 20c. The flap 110 has a main body portion 112 and a fitting portion 114 provided on the main body portion 112. The flap 120 has a second main body portion 122 and a projection portion 124 that protrudes from the second main body portion 122 and fits into the fitting portion 114. As a result, the flap 110 can be folded at once relative to the first side portion 20a, the second side portion 20b, and the third side portion 20c of the side portion 20, making it easy to assemble the packaging 10.

[0110] The first portion 110a has a first region 110a1 connected to the second portion 110b and a second region 110a2 connected to the first side portion 20a. The third portion 110c has a first region 110c1 connected to the second portion 110b and a second region 110c2 connected to the third side portion 120c. Therefore, the first portion 110a and the third portion 110c of the third flap 120 can be folded in conjunction with the folding of the second portion 110b of the flap 110 relative to the second side portion 20b.

[0111] The first portion 110a further has a fold line 110af that defines the boundary between the first region 110a1 and the second region 110a2. Similarly, the third portion 110c further has a fold line 110cf that defines the boundary between the first region 110c1 and the second region 110c2. The first portion 110a and the third portion 110c of the third flap 120 can be easily folded in conjunction with the folding of the second portion 110b of the flap 110 relative to the second side portion 20b.

[0112] In the above description with reference to Figures 1 to 6, one fitting portion 114 is provided on the flap 110 and one projection 124 is provided on the flap 120, but this embodiment is not limited to this. Two or more fitting portions may be provided on the flap 110 and two or more projections may be provided on the flap 120.

[0113] Next, the packaging device 10A of this embodiment will be described with reference to Figures 7 to 12. Figures 7(a) and 7(b) are schematic perspective views of the packaging device 10A of this embodiment. The packaging device 10A of this embodiment has the same configuration as described above with reference to Figures 1 to 6, except that the flap 110 is mainly provided with a first fitting portion 114a and a second fitting portion 114b, and the flap 120 is provided with a first projection 124a and a second projection 124b, and the shape of the second portion 110b of the flap 110 and the flap 120 are different, so redundant explanations will be omitted to avoid redundancy.

[0114] As shown in Figures 7(a) and 7(b), the packaging device 10A comprises a side surface 20, a covering surface 100, and a covering surface 200. Flaps 110 and 120 constitute the covering surface 100. Flaps 210 to 240 constitute the covering surface 200.

[0115] The flap 110 has a main body 112 and a fitting portion 114. The main body 112 is connected to the first side portion 20a to the third side portion 20c. The fitting portion 114 is located on the +X side of the main body 112. For example, the fitting portion 114 is a recess. Alternatively, the fitting portion 114 may be an opening. Here, the fitting portion 114 is recessed relative to the main body 112.

[0116] The flap 120 has a main body portion 122 and a projection portion 124. The main body portion 122 is connected to the fourth side portion 20d. The projection portion 124 is located on the -X side of the main body portion 122. For example, the projection portion 124 protrudes relative to the main body portion 122. The rising portion 124 of the flap 120 is fitted into the fitting portion 114 of the flap 110.

[0117] The first fitting portion 114 includes a first fitting portion 114a and a second fitting portion 114b. The first fitting portion 114a and the second fitting portion 114b are provided on the second portion 110b of the flap 110. For example, the first fitting portion 114a and the second fitting portion 114b are recesses. Alternatively, the first fitting portion 114a and the second fitting portion 114b may be openings. Here, the first fitting portion 114a and the second fitting portion 114b are recessed relative to the main body portion 112.

[0118] In the main body portion 112, there is no recess between the first fitting portion 114a and the second fitting portion 114b, and the first fitting portion 114a and the second fitting portion 114b protrude from each other. The first fitting portion 114a and the second fitting portion 114b are located on the +X direction side of the main body portion 112. The first fitting portion 114a is located on the -Y direction side relative to the second fitting portion 114b.

[0119] The projection 124 includes a first projection 124a and a second projection 124b. The first projection 124a and the second projection 124b protrude from the main body 122. The projection 124a is fitted into the fitting portion 114a. The projection 124b is fitted into the fitting portion 114b.

[0120] In the main body portion 122, there is a recess between the first projection 124a and the second projection 124b. The first projection 124a and the second projection 124b are located on the -X direction side of the main body portion 122. The first projection 124a is located on the -Y direction side relative to the second projection 124b.

[0121] Next, the packaging device 10A of this embodiment will be described with reference to Figures 7 and 8. Figure 8(a) is a schematic top view of the flap 110 of the packaging device 10A of this embodiment, and Figure 8(b) is a schematic top view of the flap 120 of the packaging device 10A of this embodiment. In order to avoid making the drawings excessively complex, Figure 8(a) shows only the flap 110 on the covering surface 100, and Figure 8(b) shows only the flap 120 on the covering surface 100.

[0122] As shown in Figure 8(a), the flap 110 has a first portion 110a, a second portion 110b, and a third portion 110c. Here, the flap 110 is folded relative to the first side portion 20a to the third side portion 20c.

[0123] The second portion 110b overlaps with parts of the first portion 110a and the third portion 110c. The second portion 110b is located on the +Z side relative to the first portion 110a and the third portion 110c. The second portion 110b covers the -X side of the opening portion of the side surface 20. The first portion 110a covers parts of the -Y side and the +X side of the opening portion of the side surface 20. The third portion 110c covers parts of the +Y side and the +X side of the opening portion of the side surface 20.

[0124] The flap 110 has a restricting portion 118 that suppresses the sinking of the flap 120. The restricting portion 118 is located near the fitting portion 114 of the flap 110. The restricting portion 118 restricts the movement of the projection 124 that is fitted into the fitting portion 114. When the projection 124 of the flap 120 is fitted into the fitting portion 114 of the flap 110, the restricting portion 118 can suppress the sinking of the fitting portion 114 along with the projection 124.

[0125] The restricting portion 118 includes a restricting portion 118a that restricts the first projection 124a and a restricting portion 118b that restricts the second projection 124b. The restricting portion 118a is located on the -Y direction side relative to the restricting portion 118b.

[0126] When the first projection 124a is fitted into the first fitting portion 114a, the restricting portion 118a is located on the -Z side of a part of the first projection 124a and supports the first projection 124a. The restricting portion 118a restricts the movement of the first projection 124a fitted into the first fitting portion 114a. Here, the restricting portion 118a is located on the -Y side of the first fitting portion 114a.

[0127] When the second projection 124b is fitted into the second fitting portion 114b, the restricting portion 118b is located on the -Z side of a part of the second projection 124b and supports the second projection 124b. The restricting portion 118b restricts the movement of the second projection 124b fitted into the second fitting portion 114b. Here, the restricting portion 118b is located on the +Y side of the second fitting portion 114b.

[0128] The restricting portion 118a may be separated from a portion of the adjacent part of the main body 112 and may bend without being linked to a portion of the main body 112.

[0129] For example, the restricting portion 118a is provided with a notch 113a. In one example, the notch 113a extends from the edge of the first fitting portion 114a. Here, the notch 113a extends from the edge of the first fitting portion 114a in the -Y direction and the -X direction, respectively. When the first projection 124a is fitted into the first fitting portion 114a, the restricting portion 118a, with the notch 113a, can suppress the sinking of the first projection 124a while moving in conjunction with the movement of the first fitting portion 114a, independently of the other main body portion 112.

[0130] The restricting portion 118b may be separated from a portion of the adjacent part of the main body 112 and may bend without being linked to a portion of the main body 112.

[0131] For example, the restricting portion 118b is provided with a notch 113b. In one example, the notch 113b extends from the edge of the second fitting portion 114b. Here, the notch 113b extends from the edge of the second fitting portion 114b in the +Y direction and the -X direction, respectively. When the second projection 124b is fitted into the second fitting portion 114b, the restricting portion 118b, with the notch 113b, can suppress the sinking of the second projection 124b while moving in conjunction with the movement of the second fitting portion 114b, independently of the other main body portion 112.

[0132] Furthermore, a deformation line 115a extends from the cut line 113a. The deformation line 115a extends diagonally in the +X and -Y directions from the boundary between the second side portion 20b and the second portion 110b to the cut line 113a. The deformation line 115a allows the second portion 110b to be easily deformed when the first projection 124a is fitted into the first fitting portion 114a. The deformation line 115a may be provided with folds, perforations, or cuts.

[0133] A deformation line 115b extends from the cut line 113b. The deformation line 115b extends diagonally in the +X and +Y directions from the boundary between the second side portion 20b and the second portion 110b to the cut line 113b. The deformation line 115b allows the second portion 110b to be easily deformed when the second projection 124b is fitted into the second fitting portion 114b. A fold or perforation may be provided on the deformation line 115b.

[0134] A deformation region 112r is formed in the main body 112, enclosed by deformation lines 115a and 115b. The deformation region 112r can move independently of the restricting parts 118a and 118b by means of cut lines 113a and 113b. When the first projection 124a is fitted into the first fitting part 114a and the second projection 124b is fitted into the second fitting part 114b, the deformation region 112r can move independently of the rest of the main body 112 by means of cut lines 113a and 113b, in conjunction with the movement of the first fitting part 114a and the second fitting part 114b.

[0135] As shown in Figure 8(b), the flap 120 has a main body 122, a first projection 124a, and a second projection 124b. The first projection 124a is located on the -Y side relative to the second projection 124b. In the main body 122, there is a recess between the first projection 124a and the second projection 124b.

[0136] Furthermore, the main body portion 122 is provided with a notch line 123a. The notch line 123a is located near the -Y direction side of the first projection portion 124a. The notch line 123a extends diagonally in the +X and +Y directions from the -Y direction end of the first projection portion 124a. When the first projection portion 124a is fitted into the first fitting portion 114a, the notch line 123a allows the first projection portion 124a to move relatively freely without being fully interlocked with the main body portion 122.

[0137] Furthermore, the main body portion 122 is provided with a notch line 123b. The notch line 123b is located near the +Y direction side of the second projection portion 124b. The notch line 123b extends diagonally in the +X and -Y directions from the +Y direction end of the second projection portion 124b. When the second projection portion 124b is fitted into the second fitting portion 114b, the notch line 123b allows the second projection portion 124b to move relatively freely without being fully interlocked with the main body portion 122.

[0138] Next, the packaging device 10A of this embodiment will be described with reference to Figures 7 to 9. Figures 9(a) and 9(b) are schematic perspective views of the packaging device 10A of this embodiment before the flaps 110, 120, and 210-240 are folded. Figures 7(a) and 7(b) show the assembled packaging device 10A, while Figures 9(a) and 9(b) show the packaging device 10A before the flaps 110, 120, and 210-240 are folded.

[0139] As shown in Figures 9(a) and 9(b), the packaging device 10A comprises a side surface 20 and flaps 110, 120, 210, 220, 230, and 240. Flaps 110 and 120 are located on one side of the side surface 20, while flaps 210-240 are located on the other side of the side surface 20.

[0140] The flap 110 is provided with a first fitting portion 114a and a second fitting portion 114b. The first fitting portion 114a is located on the -Y direction side relative to the second fitting portion 114b.

[0141] The flap 120 is provided with a first projection 124a and a second projection 124b. As described above, the first projection 124a of the flap 120 is fitted into the first fitting portion 114a of the flap 110, and the second projection 124b of the flap 120 is fitted into the second fitting portion 114b of the flap 110.

[0142] Next, the packaging device 10A of this embodiment will be described with reference to Figures 7 to 10. Figure 10 is a schematic unfolded view of the packaging device 10A of this embodiment.

[0143] As shown in Figure 10, the packaging device 10A comprises a first side portion 20a, a second side portion 20b, a third side portion 20c, a fourth side portion 20d, a flap 110, a flap 120, a flap 210, a flap 220, a flap 230, a flap 240, and an adhesive tab 310.

[0144] Flaps 110 and 120 are located on one side of the side 20. Flaps 210-240 are located on the other side of the side 20.

[0145] The second portion 110b of the flap 110 is provided with fitting portions 114a and 114b. The flap 120 is also provided with projections 124a and 124b.

[0146] Next, the assembly of the packaging device 10A of this embodiment will be described with reference to Figures 7 to 12. Figures 11 to 12 are schematic perspective views illustrating the assembly of the packaging device 10A of this embodiment. Figure 11 is a schematic perspective view illustrating the folding process of the flap 110 of the packaging device 10A of this embodiment. Figure 12 is a schematic perspective view of the packaging device 10A of this embodiment with the flap 110 folded.

[0147] As shown in Figure 11, the adhesive tab 310 (Figure 10) is attached to the third side portion 20c to form an annular side portion 20, and the flaps 210 to 240 are bent relative to the side portion 20 to form a covering surface 200.

[0148] Furthermore, when the second portion 110b of the flap 110 is folded relative to the side portion 20b, the first portion 110a and the third portion 110c fold in conjunction with the second portion 110b. Here, the first portion 110a folds along the fold line 110af in conjunction with the second portion 110b. The first region 110a1 of the first portion 110a folds in conjunction with the second portion 110b, and the second region 110a2 of the first portion 110a folds relative to the first side portion 20a.

[0149] Furthermore, the third section 110c bends at the fold line 110cf in conjunction with the second section 110b. The first region 110c1 of the third section 110c bends in conjunction with the second section 110b, and the second region 110c2 of the third section 110c bends relative to the third side section 20c.

[0150] As shown in Figure 12, when the second portion 110b is further bent relative to the side portion 20b, the first region 110a1 of the first portion 110a overlaps with the second region 110a2, and the first region 110a1 is sandwiched between the second portion 110b and the second region 110a2. Also, the first region 110c1 of the third portion 110c overlaps with the second region 110c2, and the first region 110c1 is sandwiched between the second portion 110b and the second region 110c2.

[0151] Subsequently, the flap 120 is folded against the side portion 20d, and the first projection 124a and the second projection 124b of the flap 120 are fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110. Thus, the first projection 124a and the second projection 124b of the flap 120 can be easily fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110. In detail, the first projection 124a and the second projection 124b of the flap 120 can be easily fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110 by pressing the flap 120 against the flap 110 with a relatively small force for a relatively short time.

[0152] As described above, the packaging device 10A of this embodiment can be assembled. According to this embodiment, the first portion 110a to the third portion 110c of the flap 110 can be folded in conjunction, so the packaging device 10A can be easily assembled. Furthermore, according to this embodiment, in the packaging device 10A, the first projection 124a and the second projection 124b of the flap 120 are fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110, so that the flap 120 can be tightly closed to the flap 110.

[0153] In the above description with reference to Figures 1 to 12, the second portion 110b of the flap 110 was fully connected to the first portion 110a and the third portion 110c, respectively, but this embodiment is not limited to this. The second portion 110b of the flap 110 may be partially connected to at least one of the first portion 110a and the third portion 110c.

[0154] Next, the packaging device 10A1 of this embodiment will be described with reference to Figure 13. Figure 13 is a schematic unfolded view of the packaging device 10A1 of this embodiment.

[0155] As shown in Figure 13, the packaging device 10A1 comprises a first side portion 20a, a second side portion 20b, a third side portion 20c, a fourth side portion 20d, a flap 110, a flap 120, a flap 210, a flap 220, a flap 230, a flap 240, and an adhesive tab 310.

[0156] In the unfolded view, the fourth side portion 20d, the first side portion 20a, the second side portion 20b, and the third side portion 20c are positioned in order in one direction. The side portion 20 is formed from the first side portion 20a, the second side portion 20b, the third side portion 20c, and the fourth side portion 20d.

[0157] Flaps 110 and 120 are located on one side of the side 20. Flaps 210-240 are located on the other side of the side 20.

[0158] The flap 110 has a first portion 110a, a second portion 110b, and a third portion 110c. The first portion 110a, the second portion 110b, and the third portion 110c are connected to the first to third side portions 20a to 20c, respectively. The first portion 110a, the second portion 110b, and the third portion 110c of the flap 110 are arranged sequentially in one direction.

[0159] In the flap 110, the first part 110a, the second part 110b, and the third part 110c are connected. The second part 110b is located between the first part 110a and the third part 110c. The second part 110b is connected to both the first part 110a and the third part 110c. The second part 110b is directly connected to the first part 110a. Also, the second part 110b is directly connected to the third part 110c.

[0160] The flap 110 further has a fold line 110p between the first portion 110a and the second portion 110b. In the flap 110, the first portion 110a is foldable relative to the second portion 110b via the fold line 110p. A fold line 110p and a gap 110g are provided at the boundary between the first portion 110a and the second portion 110b. The fold line 110p and the gap 110g extend in a straight line. The second portion 110b connects to the first portion 110a via the fold line 110p. Thus, the second portion 110b is partially connected to the first portion 110a. The fold line 110p extends from the ends of the first portion 110a and the second portion 110b that connect to the first side 20a and side 20b to the gap 110g. The gap 110g extends from the end opposite to the first side 20a and side 20b of the first part 110a and the second part 110b to the fold line 110p.

[0161] Furthermore, the flap 110 has a fold line 110q between the second portion 110b and the third portion 110c. In the flap 110, the third portion 110c is foldable relative to the second portion 110b via the fold line 110q. A fold line 110q and a gap 110h are provided at the boundary between the second portion 110b and the third portion 110c. The fold line 110q and the gap 110h extend in a straight line. The second portion 110b is connected to the third portion 110c via the fold line 110q. Therefore, the second portion 110b is partially connected to the third portion 110c. The fold line 110q extends from the end of the second portion 110b and the third portion 110c that connects to the second side 20b and the third side 20c to the gap 110h. The gap 110h extends from the end of the second side 20b and third side 20c opposite to the first side 20a and side 20b to the fold line 110q.

[0162] When assembling the packaging 10A1, when the second portion 110b of the flap 110 is folded relative to the side portion 20b, the first portion 110a and the third portion 110c fold in conjunction with the second portion 110b. Here, the first portion 110a folds along the fold line 110af. The first region 110a1 of the first portion 110a folds in conjunction with the second portion 110b, and the second region 110a2 of the first portion 110a folds relative to the first side portion 20a. Here, since a fold line 110p and a gap 110g are provided at the boundary between the first portion 110a and the second portion 110b, the second portion 110b can be easily folded relative to the side portion 20b.

[0163] Furthermore, the third portion 110c folds along the fold line 110cf. The first region 110c1 of the third portion 110c is linked to the second portion 110b, and the second region 110c2 of the third portion 110c folds relative to the third side portion 20c. Similarly, here, a fold line 110q and a gap 110h are provided at the boundary between the second portion 110b and the third portion 110c, so that the second portion 110b can be easily folded relative to the side portion 20b.

[0164] In the above description with reference to Figures 1 to 13, the packaging devices 10, 10A, and 10A1 have hollow rectangular parallelepiped-shaped spaces, but this embodiment is not limited to this. The packaging devices of this embodiment may also be used to press and secure the object to be packaged within the space.

[0165] Next, the packaging device 10B of this embodiment will be described with reference to Figures 14 to 19. Figure 14 is a schematic perspective view of the packaging device 10B of this embodiment. The packaging device 10B of this embodiment has the same configuration as the packaging device 10A described above with reference to Figures 7 to 12, except that the first portion 110a of the flap 110 has a third region 110a3 that can be folded separately from the first region 110a1 and the second region 110a2, and the third portion 110c of the flap 110 has a third region 110c3 that can be folded separately from the first region 110c1 and the second region 110c2. Therefore, to avoid redundancy, redundant explanations will be omitted.

[0166] As shown in Figure 14, the packaging device 10B comprises a side surface 20, a covering surface 100, and a covering surface 200. The side surface 20 has a first side portion 20a, a second side portion 20b, a third side portion 20c, and a fourth side portion 20d. The flaps 110 and 120 constitute the covering surface 100. The flaps 210 to 240 constitute the covering surface 200.

[0167] Next, the packaging device 10B of this embodiment will be described with reference to Figures 14 and 15. Figures 15(a) and 15(b) are schematic perspective views of the packaging device 10B of this embodiment before the flaps 110, 120, and 210-240 are folded. Note that Figures 14(a) and 14(b) show the assembled packaging device 10B, while Figures 15(a) and 15(b) show the packaging device 10B before the flaps 110, 120, and 210-240 are folded.

[0168] As shown in Figures 15(a) and 15(b), the packaging device 10B comprises a side 20, a flap 110, a flap 120, a flap 210, a flap 220, a flap 230, and a flap 240. Flaps 110 and 120 are located on one side of the side 20, while flaps 210-240 are located on the other side of the side 20.

[0169] For example, flaps 110 and 120 are located on the +Z side relative to the side surface 20. Flaps 110 and 120 are connected to the side surface 20 and can be folded.

[0170] The flaps 110 and 120 are separate from each other. Flap 110 connects to the first side 20a, second side 20b, and third side 20c of the side 20. Flap 120 connects to the fourth side 20d of the side 20. The flaps 110 and 120 can be folded independently of each other relative to the side 20.

[0171] The flap 110 is connected to the side surface 20. More specifically, the flap 110 has a first portion 110a, a second portion 110b, and a third portion 110c. The first portion 110a is located on the -Y direction side. The second portion 110b is located on the -X direction side. The third portion 110c is located on the +Y direction side. The first portion 110a, the second portion 110b, and the third portion 110c of the flap 110 are foldable in conjunction with each other relative to the first side surface 20a, the second side surface 20b, and the third side surface 20c of the side surface 20.

[0172] The second part 110b connects to the first part 110a and the third part 110c, respectively. The second part 110b is directly connected to the first part 110a. Also, the second part 110b is directly connected to the third part 110c.

[0173] The first portion 110a has a first region 110a1 that can be folded in connection with the second portion 110b, and a first region 110a2 that can be folded in connection with the first side portion 20a. The first region 110a1 and the second region 110a2 fold in different directions from each other. The first region 110a1 folds so as to overlap with the second portion 110b as the second portion 110b folds with respect to the second side portion 20b. The second region 110a2 also folds in accordance with the folding of the first region 110a1. The first region 110a1 can be folded in connection with the second portion 110b. The second region 110a2 can be folded in connection with the first side portion 20a.

[0174] Here, the first portion 110a further includes a third region 110a3 located between the first region 110a1 and the second region 110a2, in addition to the first region 110a1 and the second region 110a2. The third region 110a3 is located between the first region 110a1 and the second region 110a2. The third region 110a3 is foldable relative to the first region 110a1 and the second region 110a2.

[0175] Here, the first part 110a further has a fold line 110af1 that defines the boundary between the first region 110a1 and the third region 110a3. For example, the fold line 110af1 may be provided with a fold, perforation, or cut.

[0176] Furthermore, the first portion 110a further includes a fold line 110af2 that defines the boundary between the second region 110a2 and the third region 110a3. For example, the fold line 110af2 may be provided with a fold, perforation, or cut.

[0177] The third portion 110c has a first region 110c1 that can be folded in conjunction with the second portion 110b, and a second region 110c2 that can be folded in conjunction with the third side portion 20c. The first region 110c1 and the second region 110c2 fold in different directions from each other. The first region 110c1 folds so as to overlap with the second portion 110b as the second portion 110b folds in conjunction with the second side portion 20b. The second region 110c2 also folds in conjunction with the first region 110c1. The first region 110c1 can be folded in conjunction with the second portion 110b. The second region 110c2 can be folded in conjunction with the third side portion 20c.

[0178] Here, the third portion 110c further includes a third region 110c3 located between the first region 110c1 and the second region 110c2, in addition to the first region 110c1 and the second region 110c2. The third region 110c3 is located between the first region 110c1 and the second region 110c2. The third region 110c3 is foldable relative to the first region 110c1 and the second region 110c2.

[0179] Here, the third portion 110c further has a fold line 110cf1 that defines the boundary between the first region 110c1 and the third region 110c3. For example, the fold line 110cf1 may have a fold, a perforation, or a cut.

[0180] Furthermore, the third portion 110c further includes a fold line 110cf2 that defines the boundary between the second region 110c2 and the third region 110c3. For example, the fold line 110cf2 may be provided with a fold, perforation, or cut.

[0181] When the second portion 110b bends relative to the second side portion 20b, the first region 110a1 and the third region 110a3 of the first portion 110a bend relative to the second region 110a2 in conjunction with the bending of the second portion 110b, and the first region 110c1 and the third region 110c3 of the third portion 110c bend relative to the second region 110c2. Subsequently, when the second portion 110b bends further relative to the second side portion 20b, the first region 110a1 of the first portion 110a bends relative to the third region 110a3 and approaches the second portion 110b so as to overlap it. Similarly, the first region 110c1 of the third portion 110c bends relative to the third region 110c3 and approaches the second portion 110b so as to overlap it.

[0182] As the second portion 110b bends further relative to the second side portion 20b, the second portion 110b remains overlapping with the first region 110a1 of the first portion 110a and the first region 110c1 of the third portion 110c, respectively. The third region 110a3 of the first portion 110a maintains a predetermined angle with respect to the first region 110a1 and pushes down the second region 110a2 of the first portion 110a in the -Z direction. Similarly, the third region 110c3 of the third portion 110c maintains a predetermined angle with respect to the first region 110c1 and pushes down the second region 110a2 of the third portion 110c in the -Z direction.

[0183] Next, the packaging device 10B of this embodiment will be described with reference to Figures 14 to 16. Figures 16(a) and 16(b) are schematic diagrams of the first part 110a and the third part 110c of the flap 110 in the packaging device 10B of this embodiment before the flap 110 is folded.

[0184] As shown in Figure 16(a), the first part 110a has a main body 112a and a bending assist part 116a. As described above, the main body 112a is connected to the first side part 20a. The first part 110a bends in conjunction with the second part 110b and also bends relative to the first side part 20a.

[0185] The bending assist portion 116a is located on the opposite side of the main body portion 112a from the first side portion 20a. The bending assist portion 116a allows the first portion 110a, which connects to the second portion 110b, to be easily bent relative to the first side portion 20a. In this case, the bending assist portion 116a is recessed relative to the main body portion 112a.

[0186] The first portion 110a has first regions 110a1 to third regions 110a3. The first region 110a1 is foldable in connection with the second portion 110b. The second region 110a2 is foldable in connection with the first side portion 20a. The third region 110a3 is located between the first region 110a1 and the second region 110a2.

[0187] Here, the first part 110a has a fold line 110af1 that defines the boundary between the first region 110a1 and the third region 110a3, and a fold line 110af2 that defines the boundary between the second region 110a2 and the third region 110a3.

[0188] For example, the bending assist portion 116a is trapezoidal in front view. The bending assist portion 116a has a shape defined by points a1, a2, a3 and a4. The bending assist portion 116a may also be rectangular in front view.

[0189] Point a1 is located at the -X and +Z ends of the bending aid portion 116a. Point a2 is located at the -X and -Z ends of the bending aid portion 116a. Point a3 is located at the +X and -Z ends of the bending aid portion 116a. Point a4 is located at the +X and +Z ends of the bending aid portion 116a. Furthermore, point a1 is located further to the -X direction than point a2, and point a4 is located further to the +X direction than point a3.

[0190] Here, point FP1 is the point where the boundaries of the first part 110a and the second part 110b of the flap 110 intersect with the first side portion 20a and the second side portion 20b of the side surface 20. Fold curve 110af1 connects point FP1 and point a1. Fold curve 110af2 connects point FP1 and point a3.

[0191] In this case, the first region 110a1 is the region of the first part 110a that is on the -X side of the fold line 110af1. The second region 110a2 is the region of the first part 110a that is on the +X side of the fold line 110af2. The third region 110a3 is the region of the first part 110a that is sandwiched between the first region 110a1 and the second region 110a2.

[0192] As shown in Figure 16(b), the third portion 110c has a main body portion 112c and a bending assist portion 116c. As described above, the main body portion 112c is connected to the third side portion 20c. The third portion 110c bends in conjunction with the second portion 110b and also bends relative to the third side portion 20c.

[0193] The bending assist portion 116c is located on the opposite side from the third side portion 20c relative to the main body portion 112c. The bending assist portion 116c allows the third portion 110c, which connects to the second portion 110b, to be easily folded relative to the third side portion 20c. In this case, the bending assist portion 116c is recessed relative to the main body portion 112c.

[0194] The third portion 110c has a first region 110c1 to a third region 110c3. The first region 110c1 is foldable in connection with the second portion 110b. The second region 110c2 is foldable in connection with the third side portion 20c. The third region 110c3 is located between the first region 110c1 and the second region 110c2.

[0195] Here, the third portion 110c has a fold line 110cf1 that defines the boundary between the first region 110c1 and the third region 110c3, and a fold line 110cf2 that defines the boundary between the second region 110c2 and the third region 110c3.

[0196] For example, the bending support portion 116c is trapezoidal in a front view. The bending support portion 116c has a shape defined by points c1, c2, c3, and c4. The bending support portion 116c may also be rectangular in a front view.

[0197] Point c1 is located at the -X and +Z ends of the bending support portion 116c. Point c2 is located at the -X and -Z ends of the bending support portion 116c. Point c3 is located at the +X and -Z ends of the bending support portion 116c. Point c4 is located at the +X and +Z ends of the bending support portion 116c. Furthermore, point c1 is located further to the -X direction than point c2, and point c4 is located further to the +X direction than point c3.

[0198] Here, point FP2 is the intersection point where the boundaries of the third part 110c and the second part 110b of the flap 110, and the first side part 20a and the second side part 20b of the side surface 20 intersect. Fold curve 110cf1 connects point FP2 and point c1. Fold curve 110cf2 connects point FP2 and point c3.

[0199] In this case, the first region 110c1 is the region of the third part 110c that is on the -X side of the fold line 110cf1. The second region 110c2 is the region of the third part 110c that is on the +X side of the fold line 110cf2. The third region 110c3 is the region of the third part 110c that is sandwiched between the first region 110c1 and the second region 110c2.

[0200] Next, the packaging device 10B of this embodiment will be described with reference to Figures 14 to 17. Figure 17 is a schematic unfolded view of the packaging device 10B of this embodiment.

[0201] As shown in Figure 17, the packaging device 10 comprises a first side portion 20a, a second side portion 20b, a third side portion 20c, a fourth side portion 20d, a flap 110, a flap 120, a flap 210, a flap 220, a flap 230, a flap 240, and an adhesive tab 310.

[0202] In the unfolded view, the fourth side portion 20d, the first side portion 20a, the second side portion 20b, and the third side portion 20c are positioned in order in one direction. The side portion 20 is formed from the first side portion 20a, the second side portion 20b, the third side portion 20c, and the fourth side portion 20d.

[0203] Flaps 110 and 120 are located on one side of the side 20. Flaps 210-240 are located on the other side of the side 20.

[0204] The flap 110 has a first portion 110a, a second portion 110b, and a third portion 110c. The first portion 110a, the second portion 110b, and the third portion 110c are connected to the first to third side portions 20a to 20c, respectively. The first portion 110a, the second portion 110b, and the third portion 110c of the flap 110 are arranged sequentially in one direction.

[0205] In the flap 110, the first part 110a, the second part 110b, and the third part 110c are connected. The second part 110b is located between the first part 110a and the third part 110c. The second part 110b is connected to both the first part 110a and the third part 110c. The second part 110b is directly connected to the first part 110a. Also, the second part 110b is directly connected to the third part 110c.

[0206] Next, the assembly of the packaging device 10B of this embodiment will be described with reference to Figures 14 to 19. Figures 18 to 19 are schematic perspective views illustrating the assembly of the packaging device 10B of this embodiment. Figure 18 is a schematic perspective view illustrating the folding process of the flap 110 of the packaging device 10B of this embodiment. Figure 19 is a schematic perspective view of the packaging device 10B of this embodiment with the flap 110 folded.

[0207] As shown in Figure 18, the adhesive tab 310 (Figure 17) is attached to the third side portion 20c to form an annular side portion 20, and the flaps 210 to 240 are bent relative to the side portion 20 to form a covering surface 200.

[0208] Furthermore, in the flap 110, when the second portion 110b bends to a certain extent relative to the second side portion 20b, the second portion 110b moves closer to the first region 110a1 of the first portion 110a and the first region 110c1 of the third portion 110c, respectively, in conjunction with the bending of the second portion 110b.

[0209] Furthermore, when the second portion 110b bends relative to the second side portion 20b, the first region 110a1 of the first portion 110a bends relative to the third region 110a3, and the first region 110c1 of the third portion 110c bends relative to the third region 110c3, in conjunction with the bending of the second portion 110b. Subsequently, the second portion 110b overlaps with the first region 110a1 of the first portion 110a and the first region 110a1 of the third portion 110c, respectively.

[0210] As shown in Figure 19, when the second portion 110b bends further relative to the second side portion 20b, the third region 110a3 of the first portion 110a pushes down the second region 110a2 of the first portion 110a in the -Z direction while maintaining a predetermined angle with respect to the first region 110a1. Similarly, the third region 110c3 of the third portion 110c pushes down the second region 110a2 of the third portion 110c in the -Z direction while maintaining a predetermined angle with respect to the first region 110c1.

[0211] Subsequently, the flap 120 is folded against the side portion 20d, and the first projection 124a and the second projection 124b of the flap 120 are fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110. Thus, the first projection 124a and the second projection 124b of the flap 120 can be easily fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110. In detail, the first projection 124a and the second projection 124b of the flap 120 can be easily fitted into the first fitting portion 114a and the second fitting portion 114b of the flap 110 by pressing the flap 120 against the flap 110 with a relatively small force for a relatively short time.

[0212] As described above, the packaging device 10B of this embodiment can be assembled. According to this embodiment, the first portion 110a to the third portion 110c of the flap 110 can be folded in conjunction, so the packaging device 10B can be easily assembled. Furthermore, according to this embodiment, in the packaging device 10B, the first portion 110a and the third portion 110c of the flap 110 have third regions 110a3 and 110c3, so the easily assembled packaging device 10B can fix or maintain the object to be packaged.

[0213] In the packaging device 10B of this embodiment, the first portion 110a further includes a third region 110a3 located between the first region 110a1 and the second region 110a2, in addition to the first region 110a1 and the second region 110a2. Furthermore, the third portion 110c further includes a third region 110c3 located between the first region 110c1 and the second region 110c2. Therefore, the packaging device 10B can fix or maintain the object to be packaged. [Industrial applicability]

[0214] According to the present invention, the assembly of packaging materials can be made easier. [Explanation of Symbols]

[0215] 10 Packaging materials 20 Side view 20a First side 20b Second side 20c Third side 20d Fourth side 100 Covered surface 110 Flap 110a Part 1 110a1 1st area 110a2 2nd area 110af folding line 110b 2nd part 110c 3rd part 110c1 1st area 110c2 2nd area 110cf bending line 112 Main body 114 Fitting part 116a Bending aid part 116c Bending aid part 120 Flap 122 Main body 124 Protrusion 200 Covered surface 210 Flap 220 Flap 230 Flap 240 Flap

Claims

1. First side portion and, A second side portion connected to the first side portion, A third side portion connected to the second side portion, A fourth side portion connected to the third side portion, A first flap connected to the first side, the second side, and the third side, The second flap connected to the fourth side and Equipped with, The first flap is, A first portion connected to the first side portion, A second part connected to the first part and the second side part, The third part is connected to the second part and the third side part. It has, The first flap is, The first main body and The fitting portion provided on the first main body and It has, The second flap is, The second main body and, A projection extending from the second main body and fitted into the fitting portion Packaging device having

2. The first part is, A first region connected to the second portion, A second region connected to the first side portion and It has, The third part is, A first region connected to the second portion, The second region connected to the third side and A packaging device according to claim 1, having the following features.

3. The first part further includes a polyhedron that defines the boundary between the first region and the second region, The packaging device according to claim 2, wherein the third portion further has a fold line that defines the boundary between the first region and the second region.

4. The first portion further comprises a third region located between the first region and the second region, The packaging device according to claim 2 or 3, wherein the third portion further comprises a third region located between the first region and the second region.

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