Packing box

Abstract

To provide a packing box which can be stably carried with one hand.SOLUTION: In a first aspect of the present invention, a rectangular parallelepiped packing box comprises a bottom surface part, two pairs of side surface parts erected from the bottom surface part, and a top surface part connected to upper ends of the two pairs of side surface parts. A handle hole formation part is provided in at least one of the side surface parts, and the handle hole formation part includes an intersection of diagonal lines of the side surface part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging box. [Background technology]

[0002] Conventionally, as a packaging box for packaging products and the like, a packaging box made of cardboard or the like has been known, which has a bottom portion, two pairs of side portions standing up from the bottom portion, and a top portion connected to the upper ends of the two pairs of side portions, and one pair of side portions has a cut line for forming a handle hole.

[0003] For example, Patent Document 1 discloses a packaging box having a pair of side walls provided with first cut lines that connect two laterally spaced apart points via areas below the two points to form a transport hole, and a fold line that extends to laterally connect the upper ends of the pair of side lines of the first cut lines. When a pushing force is applied to the first area surrounded by the first cut lines, the first area is folded into the interior of the packaging box via the fold line, and a handle portion with the fold line protruding downward is formed simultaneously with the first transport hole. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5867826 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the packaging box described in Patent Document 1, the user needs to carry it by inserting both hands into the carrying holes formed in a pair of side walls, which means that both hands are occupied and the user cannot hold other objects or perform other actions at the same time, making it inconvenient.

[0006] In view of the above, an object of one aspect of the present invention is to provide a packaging box that can be stably carried with one hand. [Means for solving the problem]

[0007] A first form of the present invention is a rectangular parallelepiped packaging box having a bottom portion, two pairs of side portions standing upright from the bottom portion, and a top portion connected to the upper ends of the two pairs of side portions, wherein at least one of the side portions is provided with a handle hole forming portion, and the handle hole forming portion includes the intersection of the diagonals of the side portions.

[0008] According to the first embodiment, the handle hole forming portion includes the intersection of the diagonal lines of the side surface, so that the handle hole is formed at a position including the intersection of the diagonal lines of the side surface. Therefore, when a user inserts his / her hand into the handle hole, the user can grip the center of the side surface, and even when holding the packaging box with one hand, tilting of the packaging box is prevented, allowing the packaging box to be carried stably.

[0009] In a second form of the present invention, one pair of the two pairs of side portions are long side portions, and the other pair of the two pairs of side portions are short side portions, and the handle hole forming portion is provided on the short side portion.

[0010] According to the second embodiment, when the packaging box is grasped by placing the long side of the side portion on which the handle hole forming portion is provided along the side of the body, the distance between the user's body and the handle hole is closer than when the handle hole forming portion is provided on the long side portion because the handle hole forming portion is provided on the short side portion, and therefore the packaging box can be carried more stably in one hand.

[0011] In a third form of the present invention, the handle hole forming portion has a first fold line parallel to one ridge line of the side surface portion, score lines extending from both ends of the first fold line, and a first fold piece surrounded by the first fold line and the score lines.

[0012] According to the third embodiment, a handle hole is formed in the side surface by pushing in the first folding piece and folding the packaging box inward from the first folding line as a base point. When a user places their hand on the handle hole, the first folding line parallel to one ridge line of the side surface abuts against the center of the palm or fingers across the width of the hand, so that the packaging box naturally faces in a direction that is close to the body, allowing the user to hold it stably.

[0013] In a fourth aspect of the present invention, the midpoint of the first fold line is located at the intersection of the diagonals of the side surface portion.

[0014] According to the fourth embodiment, when the user inserts his / her hand into the handle hole, he / she can grasp the center of gravity or the vicinity of the center of gravity of the side portion in which the handle hole is formed, and can carry the device more stably in one hand.

[0015] In a fifth aspect of the present invention, the score line includes a curved line.

[0016] According to the fifth embodiment, the folding strip can be formed to have a rounded shape, so that when the user first inserts his / her hand into the handle hole to fold the folding strip, the folding strip comes into contact with the rounded shape, which prevents injury to the user's hand or fingers. This allows the packaging box to be firmly held in one hand, making it more stable when carried.

[0017] In a sixth aspect of the present invention, the handle hole forming portion has a second fold line opposite to the first fold line, a third fold line connecting one end of the first fold line and one end of the second fold line, a fourth fold line connecting the other end of the first fold line and the other end of the second fold line, a second fold piece surrounded by the second fold line and the cut line, a third fold piece surrounded by the third fold line and the cut line, and a fourth fold piece surrounded by the fourth fold line and the cut line.

[0018] According to the sixth embodiment, the first to fourth folding pieces are folded in all four directions toward the inside of the packaging box, starting from the first to fourth folding lines corresponding to each folding piece, to form handle holes in the side portions. Since the periphery of the handle hole has rounded folds, when a user inserts their hand into the handle hole, the rounded folds come into contact with the handle hole, preventing injury to the user's hands or fingers. This allows the packaging box to be firmly gripped with one hand, making it more stable when carried.

[0019] In a seventh form of the present invention, the score line has a central score line extending in the longitudinal direction of the handle hole forming portion and oblique score lines extending from both ends of the central score line to each connecting portion of the first to fourth fold lines, and the central score line is positioned on the second fold line side of the center of the short side of the handle hole forming portion.

[0020] According to the seventh embodiment, the area of ​​the first folded piece that comes into contact with the palm of the hand can be made larger than the areas of any of the second to fourth folded pieces, and when the first folded piece is folded, the area of ​​the portion where the first folded piece and the side portion overlap each other becomes larger, thereby improving the strength of the portion to be gripped.

[0021] In an eighth aspect of the present invention, the area of ​​the first bent piece is larger than the area of ​​any of the second to fourth bent pieces.

[0022] According to the eighth embodiment, when the first folding piece is folded, the area of ​​the portion where the first folding piece and the side surface portion overlap each other increases, thereby improving the strength of the portion to be gripped. [Effects of the Invention]

[0023] According to one aspect of the present invention, a packaging box that can be stably carried with one hand can be provided. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view of a packaging box according to one embodiment. [Figure 2] FIG. 1 is a development view of a packaging box according to an embodiment. [Figure 3] FIG. 4 is a schematic diagram showing a handle hole forming portion. [Figure 4] FIG. 10 is a partially enlarged cross-sectional view of the side surface showing the state in which the handle hole is formed. [Figure 5] FIG. 10 is a schematic view showing a first modified example of a handle hole forming portion. [Figure 6] FIG. 10 is a schematic view showing a second modified example of the handle hole forming portion. [Figure 7] FIG. 10 is a schematic view showing a third modified example of the handle hole forming portion. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding components will be denoted by the same reference numerals and their description may be omitted. Figure 1 is a perspective view of a packaging box according to one embodiment, and Figure 2 is a development view of the packaging box according to one embodiment.

[0026] As shown in Figures 1 and 2, the packaging box 1 is a rectangular parallelepiped packaging box having a bottom portion 2, two pairs of side portions 3 extending from the bottom portion 2, and a top portion 5 connected to the upper ends of the two pairs of side portions 3. One pair of the two pairs of side portions 3 may be a pair of opposing long side portions 31, 31, and the other pair of side portions may be a pair of opposing short side portions 32, 32. The long side portion 31 refers to the side portion 3 that includes the long side of the top portion 5, and the short side portion 32 refers to the side portion 3 that includes the short side of the top portion 5. Note that the term "rectangular parallelepiped" also includes a cube. When the shape of the packaging box 1 is a cube, both side portions 3 become short side portions 32.

[0027] The packaging box 1 can be formed, for example, by folding a cardboard sheet punched into a predetermined shape. As shown in FIG. 2, the bottom portion 2 may include four bottom portions 2a, 2b, 2c, and 2d. By gluing or joining the four bottom portions 2a, 2b, 2c, and 2d together and gluing or joining the glue tabs 11 to the side portions 3 (short side portions 32) located at the bottom of the page in FIG. 2, a packaging box 1 with an open top portion 5 is obtained. The top portion 5 may include four top portions 5a, 5b, 5c, and 5d. When storing an item in the packaging box 1 and closing the top portion 5, the top portions 5b and 5d are folded inward of the packaging box 1, and then the top portions 5a and 5c are folded inward of the packaging box 1, and the abutting portions of the top portions 5a and 5c are sealed with tape or the like. To remove an item from the packaging box 1, the top portion 5 is unsealed and the item can be removed.

[0028] The packaging box 1 has a handle hole forming portion 6 on at least one side surface portion 3. The handle hole forming portion 6 is a portion where a handle hole 61 is formed, which a user can place their hand on to grip the packaging box 1 when carrying it. The handle hole forming portion 6 includes the intersection of diagonal lines 10 of the side surface portion 3. As a result, the handle hole 61 is formed at a position including the intersection of diagonal lines 10 of the side surface portion 3. Therefore, when a user inserts their hand into the handle hole 61, they can grip the center of the side surface portion 3, preventing the packaging box from tilting obliquely even when holding it with one hand, allowing for stable carrying. Furthermore, the handle hole forming portion 6 may be positioned so that the intersection of the diagonal lines of the handle hole forming portion 6 overlaps the intersection of the diagonal line 10 of the side surface portion 3.

[0029] The handle hole forming portion 6 may be provided on each of a pair of side surface portions 3, 3. By providing the handle hole forming portion 6 on each of a pair of side surface portions 3, 3, the user can insert his / her fingers into either of the side surface portions 3 to carry the product, and therefore the handle hole 61 can be formed taking into consideration convenience when carrying the product.

[0030] FIG. 3 is a schematic diagram showing the handle hole forming portion, and FIG. 4 is a partially enlarged cross-sectional view of the side surface showing the state in which the handle hole has been formed.

[0031] As shown in FIG. 3 , the handle hole forming portion 6 may have a first fold line 71 parallel to one ridge line of the side surface portion 3, score lines 8 extending from both ends of the first fold line 71, and a first fold piece 71F surrounded by the first fold line 71 and the score lines 8. When carrying the packaging box 1, as shown in FIG. 4 , the first fold piece 71F is pushed in and the packaging box is folded inward from the first fold line 71, thereby forming a handle hole 61 in the side surface portion 3. When a user places their hand on the handle hole 61, the first fold line 71 parallel to one ridge line of the side surface portion 3 abuts against the palm or the center of the fingers across the width of the hand, so that the packaging box 1 naturally faces in a direction parallel to the body, allowing for stable gripping. Furthermore, by providing a sign, such as "Fold inward here to grip" on the outer surface of the first fold piece 71F, users can carry the packaging box in an appropriate manner.

[0032] In the example shown in FIGS. 1 to 3, the handle hole forming portion 6 has a rectangular shape, but it may also have a square shape. When the handle hole forming portion 6 has a rectangular shape, the first fold line 71 is parallel to the longitudinal direction of the handle hole forming portion 6. The shape of the handle hole forming portion 6 does not have to be similar to the side surface portion 3 on which the handle hole forming portion 6 is provided, but from the standpoint of strength, it is preferable that the shape be similar to the side surface portion 3 on which the handle hole forming portion 6 is provided. Furthermore, in the example shown in FIGS. 1 to 3, the longitudinal direction of the handle hole forming portion 6 is aligned with the longitudinal direction of the side surface portion 3 on which the handle hole forming portion 6 is provided, but this is not a limitation, and the lateral direction of the handle hole forming portion 6 may also be aligned with the longitudinal direction of the short side surface portion 32 on which the handle hole forming portion 6 is provided.

[0033] As shown in FIGS. 1 and 2 , the midpoint M of the first fold line 71 is preferably located at the intersection of the diagonals of the side surface portion 3. Typically, when storing items such as products in a packaging box 1, the packaging box 1 is packed so that there is no or minimal load imbalance within the packaging box 1. By locating the midpoint M of the first fold line 71 at the intersection of the diagonals of the side surface portion 3, a user can grasp the center of gravity of the side surface portion 3 where the handle hole 61 is formed or near the center of gravity when inserting their hand into the handle hole 61 with an item stored inside, allowing for more stable carrying with one hand. Note that "locating the midpoint M of the first fold line 71 at the intersection of the diagonals of the side surface portion 3" may also include locating the midpoint M of the first fold line 71 near the intersection of the diagonals 10 of the side surface portion 3. Note that, although the handle hole forming portion 6 is formed from the first fold line 71 toward one end of the side surface portion 3, it may also be formed from the first fold line 71 toward the other end of the side surface portion 3.

[0034] The longitudinal length of the handle hole forming portion 6 is preferably 60 mm to 140 mm, and more preferably 80 mm to 120 mm. By making the longitudinal length of the handle hole forming portion 6 60 mm to 140 mm, it is possible to form a handle hole 61 that is large enough to fit three or more fingers, or large enough to fit four fingers excluding the thumb and the palm. The lateral length of the handle hole forming portion 6 is preferably 30 mm to 60 mm, and more preferably 35 mm to 45 mm. By making the lateral length of the handle hole forming portion 6 35 mm to 45 mm, it is possible to form a handle hole 61 that is large enough to fit a finger or the center of the hand.

[0035] The handle hole forming portion 6 is preferably provided on the short side surface portion 32. When the packaging box 1 is gripped with the long side of the side surface portion 3 on which the handle hole forming portion 6 is provided aligned with the body, the distance between the user's body and the handle hole 61 is closer because the handle hole forming portion 6 is provided on the short side surface portion 32 than when the handle hole forming portion 6 is provided on the long side surface portion 31, and the packaging box 1 can be carried more stably with one hand. When the shape of the packaging box 1 is a cube or a rectangular parallelepiped close to a cube, the handle hole forming portion 6 may be provided on the long side surface portion 31.

[0036] As shown in Fig. 3, the handle hole forming portion 6 may have a second fold line 72 opposing the first fold line 71, a third fold line 73 connecting one end of the first fold line 71 to one end of the second fold line 72, and a fourth fold line 74 connecting the other end of the first fold line 71 to the other end of the second fold line 72. In other words, the first fold line 71, the second fold line 72, the third fold line 73, and the fourth fold line 74 form a rectangle. The first fold line 71, the second fold line 72, the third fold line 73, and the fourth fold line 74 form the outline of the handle hole forming portion 6. The fold lines are not particularly limited, but examples include creases formed by embossing.

[0037] The handle hole forming portion 6 may have a second folding piece 72F surrounded by the second fold line 72 and the cut line 8, a third folding piece 73F surrounded by the third fold line 73 and the cut line 8, and a fourth folding piece 74F surrounded by the fourth fold line 74 and the cut line 8. When carrying the packaging box 1, the four folding pieces, the first to fourth folding pieces 71F, 72F, 73F, and 74F, are folded in all four directions toward the inside of the packaging box 1, starting from the first to fourth fold lines 71, 72, 73, and 74 corresponding to each folding piece, to form a handle hole 61 in the side surface portion 3. 4, a rounded fold (first fold line 71) formed by folding the first folding piece 71F is located at the upper edge of the handle hole 61, and a rounded fold (second fold line 72) formed by folding the second folding piece 72F is located at the lower edge of the handle hole 61. Similarly, a rounded fold (third fold line 73) formed by folding the third folding piece 73F and a rounded fold (fourth fold line 74) formed by folding the fourth folding piece 74F are located at the right and left edges of the handle hole 61. Therefore, because the folds are located around the periphery of the handle hole 61, when a user inserts their hand into the handle hole 61, they come into contact with the rounded folds, preventing injury to the hand or fingers. In particular, the rounded fold (second fold line 72) formed by folding the second folding piece 72F is located at the lower edge of the handle hole 61, which prevents the back of the hand from being injured when the hand is inserted into the handle hole 61. As a result, the packaging box 1 can be firmly gripped with one hand and can be carried more stably.

[0038] As shown in FIG. 3, the cut line 8 may have a central cut line 81 extending in the longitudinal direction of the handle hole forming portion 6, and four oblique cut lines 82a, 82b, 82c, 82d extending from both ends of the central cut line 81 to each connecting portion 75, 76, 77, 78 of the first to fourth fold lines 71, 72, 73, 74 (each corner of the rectangle formed by the first to fourth fold lines 71, 72, 73, 74). In other words, the cut line 8 may include a diagonal cut line 82a extending from one end of the central cut line 81 to the connecting portion 75 between the first fold line 71 and the third fold line 73, a diagonal cut line 82b extending from one end of the central cut line 81 to the connecting portion 76 between the second fold line 72 and the third fold line 73, a diagonal cut line 82c extending from the other end of the central cut line 81 to the connecting portion 77 between the second fold line 72 and the fourth fold line 74, and a diagonal cut line 82d extending from the other end of the central cut line 81 to the connecting portion 78 between the first fold line 71 and the fourth fold line 74.

[0039] Furthermore, the center cut score line 81 and at least one of the diagonal cut scores 82a, 82b, 82c, and 82d may form a single line. For example, as shown in Fig. 3, the center cut score line 81, the diagonal cut score line 82b extending from one end of the center cut score line 81 to the connecting portion 76 between the second fold line 72 and the third fold line 73, and the diagonal cut score line 82c extending from the other end of the center cut score line 81 to the connecting portion 77 between the second fold line 72 and the fourth fold line 74 may form a single curve. The cut lines 8 may be cut lines that penetrate the side surface portion 3 in the thickness direction over the entire length, perforated lines that penetrate intermittently in the thickness direction of the side surface portion 3, or half-cut lines that do not penetrate the side surface portion 3 in the thickness direction, or may be a combination of these lines.

[0040] The central score line 81 is preferably positioned closer to the second fold line 72 than the center in the short direction of the handle hole forming portion 6. With this configuration, the area of ​​the first folded piece 71F that comes into contact with the palm of the hand can be made larger than the areas of any of the second to fourth folded pieces (second folded piece 72F, third folded piece 73F, and fourth folded piece 74F).When the first folded piece 71F is folded, the area of ​​the portion where the first folded piece 71F and the side surface portion 3 overlap each other is increased, improving the strength of the portion to be gripped.

[0041] It is preferable that the score lines 8 include curves. When the score lines 8 have an irregular H-shape as shown in FIG. 3, it is preferable that at least two of the three score lines 8 that make up the H-shape are curved. It is more preferable that the central score line 81 and all four diagonal score lines 82a, 82b, 82c, and 82d are curved. When the score lines 8 include curves, rounded fold strips can be formed. Therefore, when a user first inserts their hand into the handle hole 61 to fold the fold strip, the rounded fold strip comes into contact with the rounded fold strip, preventing injury to the user's hands or fingers. This allows the packaging box 1 to be firmly gripped with one hand and more stably carried.

[0042] Next, modified examples of the handle hole forming portion 6 will be described.

[0043] Fig. 5 is a schematic diagram showing a first modified example of the handle hole forming portion 6, Fig. 6 is a schematic diagram showing a second modified example of the handle hole forming portion 6, and Fig. 7 is a schematic diagram showing a third modified example of the handle hole forming portion 6. The handle hole forming portion 6 shown in Figs. 5 to 7 differs from the handle hole forming portion 6 shown in Fig. 3 in that the shape of the cut line 8 is different. In other words, the handle hole forming portion 6 shown in Figs. 5 to 7 differs from the handle hole forming portion 6 shown in Fig. 3 in that the shape of the bent pieces is different.

[0044] In the example shown in Fig. 5, all of the score lines 8 are curved. A diagonal cut line 82a extending from one end of the center cut line 81 to the connecting portion 75 between the first fold line 71 and the third fold line 73, and a diagonal cut line 82b extending from one end of the center cut line 81 to the connecting portion 76 between the second fold line 72 and the third fold line 73, form a single curve that is curved so as to convex toward the inside of the handle hole forming portion 6. A diagonal cut line 82c extending from the other end of the center cut line 81 to the connecting portion 77 between the second fold line 72 and the fourth fold line 74, and a diagonal cut line 82d extending from the other end of the center cut line 81 to the connecting portion 78 between the first fold line 71 and the fourth fold line 74, form a single curve that is curved so as to convex toward the inside of the handle hole forming portion 6. The central cutting line 81 is also a curve, and is curved so as to be convex toward the first fold line 71.

[0045] In the examples shown in Figures 6 and 7, all of the score lines 8 are straight lines. In the example shown in Figure 6, the length of the central score line 81 is longer than the lengths of each of the four oblique score lines 82a, 82b, 82c, and 82d. In the example shown in Figure 7, the length of the central score line 81 is shorter than the lengths of each of the four oblique score lines 82a, 82b, 82c, and 82d.

[0046] The handle hole forming portion 6 shown in FIGS. 5 to 7 can also achieve the same effects as the handle hole forming portion 6 shown in FIG.

[0047] Although the embodiments have been described above, they are presented as examples and the present invention is not limited to the above embodiments. The above embodiments can be implemented in various other forms, and various combinations, omissions, substitutions, modifications, etc. can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as set forth in the claims. [Explanation of symbols]

[0048] 1 packaging box 2, 2a, 2b, 2c, 2d bottom part 3 Side part 31. Long side profile 32 Short side profile 5, 5a, 5b, 5c, 5d (Face) 6. Hand acupoint formation area 61 Hand acupoints 71 First curve 71F, First Fold 72 The second curve 72F, second fold. 73 The third curve 73F, third fold. 74. The fourth curve 74F, 4th Fold 75, 76, 77, 78 Connecting parts 8. Cutting line 81. Central eye line 82a, 82b, 82c, 82d Perihedral tangent lines 10 Diagonal lines 11. The Department of Foolishness Midpoint M

Claims

1. A rectangular parallelepiped packaging box having a bottom surface, two pairs of side surfaces standing upright from the bottom surface, and a top surface connected to the upper ends of the two pairs of side surfaces, At least one of the side surfaces is provided with a handle hole forming portion, the handle hole forming portion includes an intersection of diagonals of the side surface portion, and has a first fold line parallel to one ridge line of the side surface portion, score lines extending from both ends of the first fold line, and a first fold piece surrounded by the first fold line and the score lines, and the midpoint of the first fold line is located at the intersection of the diagonals of the side surface portion.

2. One pair of the side surface portions of the two pairs of side surface portions are long side surface portions, and the other pair of the side surface portions of the two pairs of side surface portions are short side surface portions, 2. The packaging box according to claim 1, wherein the handle hole is formed in the short side surface.

3. The packaging box according to claim 1 or 2, wherein the score line includes a curved line.

4. 4. The packaging box according to claim 1, wherein the handle hole forming portion includes a second fold line opposite to the first fold line, a third fold line connecting one end of the first fold line and one end of the second fold line, a fourth fold line connecting the other end of the first fold line and the other end of the second fold line, a second fold piece surrounded by the second fold line and the score line, a third fold piece surrounded by the third fold line and the score line, and a fourth fold piece surrounded by the fourth fold line and the score line.

5. The score lines include a central score line extending in the longitudinal direction of the handle hole forming portion, and oblique score lines extending from both ends of the central score line to each connecting portion of the first to fourth fold lines, 5. The packaging box according to claim 4, wherein the center score line is located on the second fold line side of the center of the handle hole forming portion in the lateral direction.

6. 6. The packaging box according to claim 4, wherein the area of ​​the first folding piece is larger than the area of ​​any of the second to fourth folding pieces.

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