Packing box

Abstract

To provide a packaging box that can be stably stacked up and be covered at an upper-face opening.SOLUTION: A packaging box comprises an accommodation part 10 that is opened at an upper face and a lid 20 that covers the upper face of the accommodation part 10. The accommodation part 10 is formed, for example, by bending one sheet of paper into a hollowed box shape, having one side edge formed for bending with a second side-rise portion 14, a top face portion 15 and a second side-droop portion 16 in one body. The second side-rise portion 14 is provided with protrusions 17, to which the top face portion 15 and the second side-droop portion 16 are partially cut out continuously, in a manner projecting upward continuously. The lid 20 is formed separately from the accommodation part 10 and provided with a for-protrusions opening 21A allowing the protrusions 17 of the accommodation part 10 to project.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to stackable packaging boxes. [Background technology]

[0002] Because fresh produce such as strawberries is highly susceptible to spoilage, it has been conventionally stored and transported in packaging boxes. For example, a known packaging box for fresh produce such as strawberries has an open-top box body with a ventilation notch formed in the surrounding side panel, and fitting pieces of corner cover panels are inserted into fitting holes in the opening edges of the side panels and into cut grooves provided on the extensions of the fitting holes (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 60-52222 Summary of the Invention [Problem to be solved by the invention]

[0004] Such packaging boxes are required to be stacked in multiple layers to reduce transportation costs. However, for example, the packaging boxes described in Patent Document 1 have poor stability when stacked, so when stacked for transportation, they are connected with string-like connectors or the like, and when sold individually after transportation, the connectors must be untied, which is a time-consuming process. Furthermore, for example, the packaging box described in Patent Document 1 has an open top, so when stacked for transportation, the top of the box is open, and when sold individually, the tops of each box are also open, which causes the box to be easily damaged.

[0005] The present invention has been made in light of the above-mentioned problems, and has as its object to provide a packaging box that can be stably stacked and has an opening on the top surface that can be covered. [Means for solving the problem]

[0006] The packaging box of the present invention includes a storage section with an open top and a lid that covers the top of the storage section, and the storage section has a bottom section with an engagement hole formed on one side edge, a pair of opposing first side sections integrally formed and standable on the other side edge of the bottom section, first folding pieces integrally formed and bendable on both ends of the first side sections, a pair of opposing second side section upright sections integrally formed and standable on one side edge of the bottom section, a top section integrally formed and bendable with a predetermined planar width on upper parts of the second side section uprights, a second side section hanging section integrally formed and bendable on the top section, with an engagement piece protruding from a lower part thereof that engages with the engagement hole, and a protruding section formed by continuously cutting out parts of the top section and the second side section hanging section and continuously protruding upward from the second side section uprights, and and an insertion piece that is integrally formed at the bottom of the lid and is foldable and fastens to the storage section by inserting it into the insertion hole. The lid is assembled by folding the first folding piece along one side edge of the bottom surface with the first side surface portion raised relative to the lid, raising the second side surface raised portion and folding the top surface and the second side surface hanging portion to cover the first folding piece, and engaging the engaging piece with the engaging hole. Locking notches for locking the lid are provided on the underside of the second side surface raised portion and the underside of the second side surface hanging portion. The lid has a lid top surface that covers the top surface of the storage section, a pair of opposing lid side surfaces that are integrally formed at one side edge of the lid top surface so as to be able to be folded, and an insertion piece that is integrally formed at the bottom of the lid side surfaces so as to be able to be folded and is fixed to the storage section by being inserted into the locking notches of the storage section, and an opening for projection is provided on one side edge of the lid top surface to allow the projection of the storage section to protrude. [Effects of the Invention]

[0007] According to the present invention, in the storage unit, the second side upright portion, the top surface portion, and the second side hanging portion are integrally formed on one side edge of the bottom surface portion, and the storage unit is assembled by raising the second side upright portion and folding the top surface portion and the second side hanging portion to cover the first bent piece and engaging the engaging piece with the engaging hole, and a protruding portion is provided that protrudes upward from the second side upright portion by continuously cutting out a portion of the top surface portion and the second side hanging portion, so that the protruding portion can be positioned outward of the lower end of the second side upright portion and the lower end of the second side upright portion can be positioned inside the protruding portion, allowing multiple storage units to be easily stacked one on top of the other. Therefore, the storage unit stacked on top can be stably held by the protruding portion of the storage unit below.

[0008] Furthermore, since the container is provided with a lid having an opening for the protrusion through which the protrusion protrudes, the opening of the storage compartment can be covered with the lid to protect the stored items, and the storage compartments can be stacked with or without the lid. Furthermore, if the containers are stacked with the lid on, the friction between the top surface of the lid and the bottom surface of the storage compartment allows for more stable stacking.

[0009] In addition, two protrusions are provided at intervals on each second side upright portion, and an insertion piece is provided at a position corresponding to each second side upright portion and between the two protrusions.In addition, protrusion cutouts are provided on both sides of the insertion piece on the underside of the lid side portion, cutting out the protrusions to correspond to the protrusions.By aligning the protrusions and the protrusion cutouts, movement in the direction of one side edge can also be suppressed, allowing for more stable holding. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a development view of a storage section of a packaging box according to an embodiment of the present invention; [Figure 2] 1 is a development view of a lid of a packaging box according to an embodiment of the present invention. [Figure 3] 1 is a side view of a packaging box according to an embodiment of the present invention, viewed from one direction. [Figure 4]FIG. 10 is an exploded side view of the packaging box according to the embodiment of the present invention, seen from another direction. [Figure 5] 1 is a diagram illustrating a state in which packaging boxes according to an embodiment of the present invention are stacked. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] FIG. 1 is a development view of a storage section 10 of a packaging box according to one embodiment of the present invention. FIG. 2 is a development view of a lid 20 of the packaging box. FIG. 3 is a side view of the packaging box seen from one direction, where (A) shows the storage section 10 with the lid 20 in place, and (B) shows the storage section 10 and the lid 20 disassembled. FIG. 4 is an exploded side view of the packaging box seen from another direction, with the storage section 10 and the lid 20 disassembled. FIG. 5 shows the packaging boxes stacked with the lids 20 attached. This packaging box has a storage section 10 with an open top and a lid 20 that covers the top of the storage section 10, and is made of paper such as corrugated cardboard or thick paper.

[0013] Storage section 10 is formed, for example, by folding a sheet of paper into a hollow box shape. Storage section 10 has, for example, a bottom surface portion 11 having an engagement hole 11A formed on one side edge, a pair of opposing first side surface portions 12 integrally formed on the other side edge of bottom surface portion 11 so as to be able to stand up, and first folding pieces 13 integrally formed on both end portions of first side surface portion 12 so as to be able to be folded.

[0014] The bottom surface portion 11 is, for example, rectangular, and two engagement holes 11A are provided, spaced apart, along one of a pair of side edges. The engagement holes 11A are preferably, for example, rectangular. The first side surface portion 12 is, for example, rectangular, and is provided continuous with the other of the pair of side edges of the bottom surface portion 11 via a folding line 10A. The first folding piece 13 has, for example, a rectangular shape with a portion cut out, and is provided continuous with both ends of the first side surface portion 12 via a folding line 10B. The lower end of the tip of the first folding piece 13 is preferably provided with a locking notch 13A for inserting an insertion piece 23 of the lid 20, which will be described later. The upper end of the first folding piece 13 is preferably provided with an upper notch 13B, for example, at a position corresponding to at least the protrusion 17, which will be described later. This is to prevent the protrusion 17 from getting in the way when folded.

[0015] The storage section 10 also has, for example, a pair of opposing second side upright portions 14 integrally formed and able to stand on one side edge of the bottom section 11, a top section 15 integrally formed and able to be bent at the upper part of the second side upright portions 14 with a predetermined planar width, a second side hanging portion 16 integrally formed and able to be bent with the top section 15 and having a protruding engagement piece 16A at the lower part that engages with the engagement hole 11A, and a protruding portion 17 formed by continuously cutting out a portion of the top section 15 and the second side hanging portion 16 and protruding continuously upward from the second side upright portion 14.

[0016] The second side upright portion 14 is, for example, rectangular and is provided continuous with one of the pair of side edges of the bottom surface portion 11 via a folding line 10C. A locking notch 14A for locking the lid 20 is provided on the underside of the second side upright portion 14, specifically the lower end, for example. The locking notch 14A is, for example, rectangularly cut out, and preferably has outward notches on both sides in the width direction. This is for securing an insertion piece 23 of the lid 20, which will be described later. The rectangular notch portion of the locking notch 14A is preferably configured, for example, as a U-shaped notch with the open side aligned with the folding line 10C, so that an opening is formed by folding along the folding line 10C. The top surface portion 15 is provided continuous with the second side upright portion 14 on the opposite side from the bottom surface portion 11 via a folding line 10D. The planar width of top surface portion 15 is not limited as long as it is wide enough to cover first folded piece 13, and is preferably determined according to the thickness of the paper that forms storage portion .

[0017] Second side surface hanging portion 16 has, for example, a rectangular shape with a portion cut out and an engagement piece 16A protruding from the bottom, and is provided continuously with top surface portion 15 on the opposite side of second side surface upright portion 14 via folding line 10E. For example, engagement pieces 16A are provided in pairs at intervals along the lower edge of second side surface hanging portion 16 at positions corresponding to engagement holes 11A. It is preferable that engagement pieces 16A are formed to protrude in, for example, a rectangular shape. The length (protrusion amount) of engagement pieces 16A need only be sufficient to engage with engagement holes 11A, but it is preferable that it be approximately the thickness of the paper that makes up storage section 10. This is because protruding below bottom surface portion 11 would be undesirable and would get in the way.

[0018] A locking notch 16B for locking the lid 20 is cut out at the lower side of the second side hanging portion 16, for example, specifically at the lower end, at a position corresponding to the locking notch 14A of the second side standing portion 14. The locking notch 16B is preferably larger than the locking notch 14A so that an insertion piece 23 of the lid 20, which will be described later, can be passed through. Also, an enlarged notch 16C, for example, of a semicircular shape, is preferably cut out above the locking notch 16B so that it expands upward. This is to allow for easy spreading by hooking a finger or the like when disassembling the storage unit 10.

[0019] The protruding portion 17 is for holding the lower portion of the storage unit 10 stacked on top when the storage units 10 are stacked. For example, the protruding portion 17 protrudes upward continuously from the second side standing portion 14 bent from the bottom surface portion 11, and therefore can be positioned outside the lower portion of the storage unit 10, i.e., the lower end of the second side standing portion 14. Furthermore, the protruding portion 17 is formed by continuously cutting out a portion of the top surface portion 15 and the second side hanging portion 16, so that it can have a sufficient height and can stably hold the lower portion of the storage unit 10 stacked on top.

[0020] The protrusions 17 are preferably provided so as to be continuous with the second side upright portions 14 via the folding lines 10D, for example. That is, it is preferable that the folding lines 10D between the second side upright portions 14 and the top surface portion 15 are provided so as to be continuous. This is because the protrusions 17 can be easily folded when they are not required to be used. It is preferable that two protrusions 17 are provided for each second side upright portion 14, spaced apart from each other. This is because, by combining with the protrusion cutouts 22A of the lids 20 described below, movement in the one side edge direction (extension direction of one side edge) X when the storage units 10 are stacked is suppressed. Note that it is preferable that the portion of the top surface portion 15 located between the two protrusions 17 is cut out. This is to facilitate assembly.

[0021] The storage section 10 is assembled, for example, by bending the first folding piece 13 along one side edge of the bottom section 11 while the first side section 12 is raised relative to the bottom section 11, raising the second side raising section 14, and folding the top section 15 and the second side hanging section 16 to cover the first folding piece 13, and engaging the engaging piece 16A with the engaging hole 11A.

[0022] Lid 20 is provided as a separate body from storage unit 10, and is formed, for example, by folding a piece of paper. Lid 20 has a lid upper surface portion 21 that covers the top surface of storage unit 10, a pair of opposing lid side surfaces 22 that are integrally formed and bendable on one side edge of lid upper surface portion 21, and an insertion piece 23 that is integrally formed and bendable on the lower part of lid side surface portion 21 and that is fixed to storage unit 10 by being inserted into locking notches 14A, 13A, and 16B of storage unit 10.

[0023] The lid top surface 21 is, for example, rectangular, and is formed to a size corresponding to the top surface of the storage section 10. A pair of side edges of the lid top surface 21 are each provided with a protrusion opening 21A through which the protrusion 17 of the storage section 10 protrudes. It is preferable that the protrusion opening 21A is extended along one side edge and provided on the lid side surface 22 as well. This is to make it easier to attach and remove the lid.

[0024] The lid side surface portion 22 has, for example, a rectangular shape with a portion cut out, and is formed to a size corresponding to the second side upright portion 14 of the storage unit 10. The lid side surface portion 22 is provided, for example, continuous with one side edge on both sides of the lid top surface portion 21 via a folding line 20A. It is preferable that the lower side of the lid side surface portion 22, for example, specifically the lower end, is provided with protrusion cutout portions 22A cut out on both sides of the insertion piece corresponding to the protrusions 17. This is because, by combining with the protrusions 17, movement in the one side edge direction X is suppressed when the storage units 10 are stacked.

[0025] The insertion pieces 23 are provided continuously via the folding line 20B on the side of the lid side surface portion 22 opposite the lid top surface portion 21. The insertion pieces 23 are preferably provided at positions corresponding to the two protrusions 17, respectively, corresponding to each second side upright portion 14. The lateral width of the insertion pieces 23 is preferably expanded and then narrowed from the lid side surface portion 22 side toward the tip end. This is to make it easy to insert into the locking notch 14A and difficult to remove after insertion. The width of the rectangular notch portion of the locking notch 14A is preferably wider than the tip and base end of the insertion pieces 23 and narrower than the expanded portion.

[0026] The lid 20 can be fixed to the storage section 10, for example, by placing the lid top surface 21 on the storage section 10, bending the lid side surface 22 and the insertion piece 23, and inserting the insertion piece 23 into the locking notches 14A, 13A, and 16B of the storage section 10.

[0027] This packaging box can be used, for example, by stacking. When stacking, for example, the protrusion 17 of the lower storage section 10 is stood upright, and the lower part of the storage section 10 to be stacked on top, i.e., the lower end of the second side standing section 14, is placed inside the protrusion 17. The boxes can be stacked with or without the lids 20 attached. When stacking with the lids attached, for example, the protrusion cutout 22A of the lid side section 22 of the packaging box to be stacked on top is aligned with the protrusion 17 of the lower storage section 10.

[0028] As described above, according to the present embodiment, second side upright portion 14, top portion 15, and second side hanging portion 16 are integrally formed on one side edge of bottom portion 11 in storage unit 10, and top portion 15 and second side hanging portion 16 are folded so as to raise second side upright portion 14 and cover first folded piece 13, and engagement piece 16A is engaged with engagement hole 11A for assembly. Furthermore, portions of top portion 15 and second side hanging portion 16 are continuously cut out to provide protruding portion 17 that protrudes upward from second side upright portion 14. Therefore, protruding portion 17 can be positioned outward of the lower end of second side upright portion 14, and the lower end of second side upright portion 14 can be positioned inside protruding portion 17, making it easy to stack multiple storage units 10. Therefore, the stacked storage units 10 can be stably held by protruding portion 17 of the storage unit 10 below.

[0029] Furthermore, since the storage unit 10 is provided with the lid 20 having the protrusion opening 21A through which the protrusion 17 protrudes, the lid 20 covers the opening of the storage unit 10, protecting the stored item 10, and the storage unit 10 can be stacked with or without the lid 20. Furthermore, if the storage unit 10 is stacked with the lid 20 in place, the friction between the lid top surface 21 of the lid 20 and the bottom surface 11 of the storage unit 10 allows for more stable stacking.

[0030] In addition, two protrusions 17 are provided at intervals for each second side standing portion 14, and insertion pieces 23 are provided at positions corresponding to each second side standing portion 14 and between the two protrusions 17. Protrusion cutouts 22A are also provided on the underside of the lid side portion 22 on both sides of the insertion pieces 23 to correspond to the protrusions 17. By aligning the protrusions 17 with the protrusion cutouts 22A, movement in the one side edge direction X can also be suppressed, allowing for more stable holding.

[0031] Although the present invention has been described above using embodiments, the present invention is not limited to the above embodiments and can be modified in various ways. For example, although each component has been specifically described in the above embodiments, not all components may be included, and other components may be included. Furthermore, although the specific shapes of each component have been shown in the drawings, they may be configured to have other shapes. [Industrial Applicability]

[0032] It can be used for packaging boxes. [Explanation of symbols]

[0033] 10...storage section, 10A, 10B, 10C, 10D, 10E...folding lines, 11...bottom surface, 11A...engagement hole, 12...first side section, 13...first folding piece, 13A...locking notch, 13B...upper notch, 14...second side standing section, 14A...locking notch, 15...top surface, 16...second side hanging section, 16A...engagement piece, 16B...locking notch, 16C...enlarged notch, 17...protrusion, 20...lid, 20A, 20B...folding lines, 21...lid top surface, 21A...protrusion opening, 22...lid side section, 22A...protrusion notch, 23...insertion piece

Claims

[Claim 1] A packaging box having a storage section with an open top and a lid that covers the top of the storage section, The storage section includes a bottom surface portion having an engagement hole formed on one side edge thereof, a pair of opposing first side surface portions integrally formed on the other side edge of the bottom surface portion so as to be able to stand up, first folding pieces integrally formed on both ends of the first side surface portions so as to be able to be bent, a pair of opposing second side surface upright portions integrally formed on one side edge of the bottom surface portion so as to be able to stand up, a top surface portion integrally formed on an upper part of the second side surface upright portions so as to be able to be bent with a predetermined planar width, a second side surface hanging portion integrally formed on the top surface portion so as to be able to be bent, and having an engagement piece protruding from a lower part thereof that engages with the engagement hole, and a structure including a top surface portion and a a protruding portion formed by continuously cutting out a portion of the second side surface hanging portion and continuously protruding upward from the second side surface standing portion, and assembled by bending the first folded piece along one side edge of the bottom surface portion with the first side surface portion standing up relative to the bottom surface portion, and bending the top surface portion and the second side surface hanging portion to stand up and cover the first folded piece, and engaging the engaging piece with the engaging hole, and locking notches for locking the lid are provided on the underside of the second side surface standing portion and the underside of the second side surface hanging portion, the lid has a lid upper surface portion covering the upper surface of the storage section, a pair of opposing lid side portions integrally formed on one side edge of the lid upper surface portion in a bendable manner, and an insertion piece integrally formed on a lower part of the lid side portions in a bendable manner and fixed to the storage section by being inserted into the locking notch of the storage section, and a protrusion opening through which the protrusion of the storage section protrudes is provided on one side edge of the lid upper surface portion, The protruding portions are provided two by two with a gap between them for each of the second side standing portions, the insert pieces are provided at positions corresponding to the second side standing portions and between the two protruding portions, and protruding portion cutouts that are cut out corresponding to the protruding portions are provided on both sides of the insert pieces on the underside of the cover side portion. A packaging box characterized by:

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