Packing unit

Abstract

To provide a packing unit which can be made compact compared to a conventional one.SOLUTION: A packing unit 1 is used in a state of being stacked in a vertical direction. Each of packing members 10 has: a storage recess 11 which stores an object-to-be-packed P so as to surround a center line CL of the packing unit 1 along the vertical direction in a state where the packing units 1 are stacked; and a movement restricting part 12 which is formed in the storage recess 11 or formed closer to the center line CL than the storage recess 11 and restricts the movement of an adjacent packing member 10 in the same packing unit 1 along a plane A.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a packaging unit in which a plurality of packaging members are arranged. [Background technology]

[0002] Conventionally, a packaging unit in which a plurality of packaging members for accommodating an object to be packaged are arranged has been proposed. For example, in Patent Document 1, the packaging members for accommodating the object to be packaged are arranged on a plane so as to surround the center line of the packaging unit. In a state in which the packaging members are arranged to form a packaging unit, a fitting recess and a fitting protrusion that fit into a wall portion forming a storage recess are formed on adjacent packaging members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7142439 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the packaging unit of Patent Document 1, the fitting recess and fitting protrusion that engage with the wall portions that form the accommodating recess are provided on the wall portions of adjacent accommodating recesses, which results in a large size of the packaging unit.

[0005] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a packaging unit that can be made more compact than conventional ones. [Means for solving the problem]

[0006] In consideration of the above problems, the packaging unit of the present invention is a packaging unit in which a plurality of packaging members each accommodating at least one packaged item are arranged on a plane, and the packaging units are used in a vertically stacked state, and each of the packaging members has, when the packaging units are stacked, a storage recess for accommodating the packaged item so as to surround a center line of the packaging unit along the vertical direction, and a movement restriction portion formed in the storage recess or formed closer to the center line than the storage recess and for restricting movement along the plane relative to adjacent packaging members of the same packaging unit.

[0007] According to the present invention, when the packaging units are stacked in the vertical direction, the movement of the packaging members of the lower packaging unit is restricted by the movement restricting portion in the planar direction. This prevents the packaging members from being displaced. In particular, since the movement restricting portion is formed in the storage recess or is formed closer to the center line than the storage recess, the space of the packaging unit can be effectively utilized to make the packaging unit more compact.

[0008] In a more preferred embodiment, the storage recess includes a common recess for storing the common packaged object between the adjacent packaging members of each packaging unit. According to this embodiment, by providing a common recess between the adjacent packaging members, a more compact packaging unit can be obtained.

[0009] In a more preferred embodiment, the packaging unit has a through hole formed closer to the center line than the storage recess. According to this embodiment, by providing the through hole in the packaging unit, it is possible to easily remove the stacked packaging members by putting a hand through the through hole.

[0010] In a more preferred embodiment, the movement restricting portion restricts movement in a direction along two intersecting straight lines on the plane. According to this embodiment, by restricting movement in a direction along two intersecting straight lines on the plane with the movement restricting portion, it is possible to stabilize the stacked state of the packaging units.

[0011] In a more preferred embodiment, the packaging members have the same shape. According to this embodiment, the packaging members are made to have the same shape, which makes it easier to manage the packaging members. Also, even if one of the packaging members constituting a packaging unit is damaged, a packaging unit constituting another packaging unit can be used as a substitute. Effect of the Invention

[0012] According to the present invention, even when the container body is made of foamed resin, overall deformation of the packaging container can be suppressed. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view of a state in which packaging units according to a first embodiment of the present invention are stacked in a vertical direction. [Diagram 2] FIG. 2(a) is a perspective view of the packaging unit shown in FIG. 1, and FIG. 2(b) is a plan view of the packaging unit shown in FIG. [Diagram 3] FIG. 6(a) is a perspective view of a packaging unit according to a second embodiment of the present invention, and (b) is a plan view of the packaging unit shown in (a). [Figure 4] FIG. 10(a) is a perspective view of a packaging unit according to a third embodiment of the present invention, and (b) is a plan view of the packaging unit shown in (a). [Diagram 5] FIG. 13(a) is a perspective view of a packaging unit according to a fourth embodiment of the present invention, and (b) is a plan view of the packaging unit shown in (a). [Figure 6] FIG. 13(a) is a perspective view of a packaging unit according to a fifth embodiment of the present invention, and (b) is a plan view of the packaging unit shown in (a). [Figure 7] FIG. 13(a) is a perspective view of a packaging unit according to a sixth embodiment of the present invention, and (b) is a plan view of the packaging unit shown in (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Packaging units according to first to sixth embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

[0015] [First embodiment] Fig. 1 is a perspective view of a state in which packaging units 1 according to a first embodiment of the present invention are stacked in a vertical direction. Fig. 2(a) is a perspective view of the packaging unit shown in Fig. 1, and Fig. 2(b) is a plan view of the packaging unit 1 shown in Fig. 2(a).

[0016] As shown in Fig. 1, the packaging unit 1 according to this embodiment is a unit in which a plurality of packaging members 10, each of which contains at least one packaged item P, are arranged on a plane A. As shown in Fig. 1, the packaging unit 1 is used in a vertically stacked state.

[0017] In this embodiment, the packaging member 10 is made of a thermoplastic resin foam composed of a plurality of foam particles fused together, and is formed by in-mold steam foaming molding. Examples of the thermoplastic resin foam include molded bodies formed by foaming beads of various synthetic resins, such as polystyrene, styrene-modified polyolefin resins, high impact polystyrene, styrene-ethylene copolymers, styrene-maleic anhydride copolymers, styrene-acrylonitrile copolymers, and other polystyrene resins, polyethylene, polypropylene, ethylene-vinyl acetate copolymers, and other polyolefin resins, and polyethylene terephthalate and other polyester resins.

[0018] Among them, a foamed molded product of polystyrene or styrene-modified polyolefin resin is preferably used. A styrene-modified polyolefin resin is obtained by impregnating and polymerizing polyolefin resin particles with a styrene monomer, and among styrene-modified polyolefin resins, a styrene-modified polyethylene resin is preferred, and for example, a styrene component ratio of 40 to 90% by weight, preferably 50 to 85% by weight, and more preferably 55 to 75% by weight is used. The expansion ratio of the polystyrene foam is preferably 5 to 10 times.

[0019] In this embodiment, the packaging unit 1 is composed of two packaging members 10, 10 of the same shape. Four packaged objects P are accommodated in each packaging member 10. As shown in Figs. 1 and 2, the packaging member 10 has storage recesses 11 for accommodating each packaged object P, surrounding the center line CL of the packaging unit 1 along the up-down direction when the packaging units 1 are stacked. Each packaging member 10 has four storage recesses 11 formed therein to accommodate the four packaged objects P, but the shape and number of the packaged objects P are not limited thereto, and the packaging member 10 may have storage recesses 11 formed in a shape and number that matches the number of the packaged objects P to be packed.

[0020] In this embodiment, the storage recess 11 includes a common recess 11A that stores a common packaged object P between adjacent packaging members 10, 10 of each packaging unit 1. In this embodiment, the common recess 11A is configured to include a portion that stores a part of a portion Pb protruding from a main body Pa of the packaged object P, and a portion that stores a tip of the protruding portion Pb. By providing the common recess 11A by utilizing adjacent packaging members 10, 10, a more compact packaging unit 1 can be obtained.

[0021] 2, the packaging unit 1 has a through hole 13 formed around the center line CL relative to the storage recess 11. By providing the packaging unit 1 with the through hole 13, the stacked packaging members 10 can be easily removed by putting a hand through the through hole 13.

[0022] Furthermore, the packing member 10 has a movement restricting portion 12 that is formed closer to the center line CL than the storage recess 11 and restricts movement along the plane A relative to an adjacent packing member 10 of the same packing unit 1. In this embodiment, the movement restricting portion 12 restricts movement in the direction D1 in which the two packing members 10 face each other.

[0023] Specifically, the movement restricting portion 12 protrudes toward the center line CL (specifically, toward a direction perpendicular to the direction D1). As a result, the movement restricting portion 12 has a restricting surface 12a that restricts movement in the direction D1. As a result, when the two packing members 10, 10 form a packaging unit 1, the restricting surface 12a of the movement restricting portion 12 of one packing member 10 comes into contact with the inner wall surface 12b formed around the center line CL of the other packing member 10.

[0024] As a result, when the packing units 1 are stacked in the vertical direction, the packing material 10 of the lower packing unit 1 is restricted from moving in a planar direction by the movement restricting portion 12. This prevents the packing material 10 from shifting out of position. In particular, in this embodiment, the movement restricting portion 12 is formed at a position CL closer to the center line than the storage recess 11, so that the packing unit 1 can be made more compact than the center line CL.

[0025] Furthermore, by making the packing members 10 have the same shape, it becomes easier to manage the packing members 10. Even if one of the packing members 10 constituting the packing unit 1 is damaged, the packing member 10 constituting the other packing unit 1 can be used as a substitute.

[0026] Second Embodiment Fig. 3(a) is a perspective view of a packing unit 1 according to a second embodiment of the present invention, and Fig. 3(b) is a plan view of the packing unit 1 shown in Fig. 3(a). The packing unit 1 according to the second embodiment differs from that of the first embodiment in the shape of the movement restricting portion 12 of the packing member 10.

[0027] In this embodiment, the movement restricting portion 12 is formed closer to the center line CL, and restricts movement in two directions D1, D2 on a straight line along the plane A with respect to adjacent packing members 10 of the same packing unit 1. Specifically, the movement restricting portion 12 of each packing member 10 includes a fitting convex portion 12c and a fitting concave portion 12d formed closer to the center line CL than the multiple accommodating concave portions 11.

[0028] In this embodiment, the fitting convex portion 12c of one of the adjacent packing members 10, 10 fits into the fitting concave portion 12d of the other packing member 10, and the fitting concave portion 12d of one of the packing members 10 fits into the fitting convex portion 12c of the other packing member 10. As a result, the fitting convex portions 12c of the adjacent packing members 10, 10 are formed with restricting surfaces 12a, 12e that restrict movement in both directions D1, D2.

[0029] As a result, by fitting the fitting convex portion 12c and the fitting concave portion 12d of the packing members 10, 10 together, the inner wall surface 12b formed in the fitting concave portion 12d comes into contact with the restricting surface 12a formed on the fitting convex portion, restricting movement in the direction D1, as in the first embodiment. In addition, the restricting surfaces 12e, 12e of the fitting convex portions 12c, 12c come into contact with each other, restricting movement in the direction D2.

[0030] In this embodiment, the mating protrusion 12c is fitted so as to fill the mating recess 12d, but for example, a through hole similar to that of the first embodiment may be provided by fitting the mating protrusion 12c so as to fill a portion of the mating recess 12d.

[0031] Third Embodiment Fig. 4(a) is a perspective view of a packing unit 1 according to a third embodiment of the present invention, and Fig. 4(b) is a plan view of the packing unit 1 shown in Fig. 4(a). The packing unit 1 according to the third embodiment differs from the first embodiment in the shape of the movement restricting portion 12 of the packing member 10.

[0032] In this embodiment, the movement restricting portion 12 restricts movement in a direction along two intersecting straight lines L1, L2 on the plane A. Specifically, the movement restricting portion 12 of each packaging member 10 includes a fitting convex portion 12c and a fitting concave portion 12d formed closer to the center line CL than the multiple accommodating concave portions 11.

[0033] In this embodiment, between adjacent packaging members 10, 10, the mating convex portion 12c of one packaging member 10 fits into the mating concave portion 12d of the other packaging member 10, and the mating concave portion 12d of one packaging member 10 fits into the mating convex portion 12c of the other packaging member 10.

[0034] In this embodiment, the mating protrusion 12c extends from the storage recess 11 into the interior of the packaging unit 1, and its tip is bent in a different direction (orthogonal direction) on plane A, and the mating recess 12d is recessed according to the shape of the mating protrusion 12c.

[0035] By fitting the mating protrusions 12c and mating recesses 12d of the packing members 10, 10 together, the inner wall surface 12b formed in the mating recess 12d comes into contact with the regulating surface 12a formed in the mating protrusion 12c, and the regulating surfaces 12e, 12e of the mating protrusions 12c come into contact with each other, as in the second embodiment. This restricts the two-way movement of the packing members 10, 10 along the straight line L1. Furthermore, since the tip of the mating protrusion 12c is bent, the regulating surfaces 12f, 12f of the mating protrusions 12c also come into contact with each other at the bent portion. This restricts the two-way movement of the packing members 10, 10 along the straight line L2.

[0036] In this way, according to this embodiment, the stacked state of the packaging units 1 can be stabilized by restricting movement in the direction along the two intersecting straight lines L1 and L2 on the plane A with the movement restricting section 12.

[0037] In this embodiment, when the fitting convex portion 12c and the fitting concave portion 12d are fitted together, a part of the fitting concave portion 12d forms a through hole 13. This allows the stacked packaging members 10 to be easily removed by putting a hand through the through hole 13.

[0038] [Fourth embodiment] Fig. 5(a) is a perspective view of a packing unit 1 according to a fourth embodiment of the present invention, and Fig. 5(b) is a plan view of the packing unit 1 shown in Fig. 5(a). The packing unit 1 according to the fourth embodiment differs from the first embodiment in the shape of the movement restricting portion 12 of the packing member 10.

[0039] In this embodiment, the movement restricting portion 12 restricts movement in a direction along two intersecting straight lines L1, L2 on the plane A. Specifically, the movement restricting portion 12 of each packaging member 10 includes a fitting convex portion 12c and a fitting concave portion 12d formed closer to the center line CL than the multiple accommodating concave portions 11.

[0040] In this embodiment, between adjacent packaging members 10, 10, the mating convex portion 12c of one packaging member 10 fits into the mating concave portion 12d of the other packaging member 10, and the mating concave portion 12d of one packaging member 10 fits into the mating convex portion 12c of the other packaging member 10.

[0041] In this embodiment, the fitting protrusion 12c has a recessed portion (neck portion) at the base end in plan view, and the fitting recess 12d is recessed according to the shape of the fitting protrusion 12c. Note that in this embodiment, the fitting protrusion 12c has an outer shape larger than a semicircle in plan view to form a neck portion, but the shape is not limited to a circle and may be a polygonal shape, etc.

[0042] In this way, by engaging the mating convex portions 12c and mating concave portions 12d of the packaging members 10, 10, the movement in the direction along the two intersecting straight lines L1, L2 on the plane A can be restricted by the movement restricting portion 12, thereby stabilizing the stacked state of the packaging units 1.

[0043] Fifth embodiment Fig. 6(a) is a perspective view of a packing unit 1 according to a fifth embodiment of the present invention, and Fig. 6(b) is a plan view of the packing unit 1 shown in Fig. 6(a). The packing unit 1 according to the fifth embodiment differs from the first embodiment in the shape of the items P to be packed and the number of packing members 10.

[0044] In this embodiment, the packaging unit 1 is composed of four packaging members 10. The packaging members 10 are formed with storage recesses 11 for storing packaged items P that are rectangular in plan view. When the packaging units 1 are stacked, the storage recesses 11 are arranged so as to surround a center line CL of the packaging units 1 that is aligned in the up-down direction.

[0045] In this embodiment, the movement restricting portion 12 restricts movement in a direction along two intersecting straight lines L1, L2 on the plane A. Specifically, the movement restricting portion 12 of each packaging member 10 includes a fitting convex portion 12c and a fitting concave portion 12d formed closer to the center line CL than the multiple accommodating concave portions 11.

[0046] In this embodiment, the movement restricting portion 12 is formed with a fitting recess 12d that fits into the fitting protrusion 12c of one of the two packing members 10, 10 adjacent to the packing member 10, and a fitting protrusion 12c that fits into the fitting recess 12d of the other packing member 10. The shapes of the fitting protrusion 12c and the fitting recess 12d are the same as those in the fourth embodiment.

[0047] In this way, by engaging the mating convex portions 12c and mating concave portions 12d of adjacent packaging members 10, 10, movement in the direction along the two intersecting straight lines L1, L2 on plane A can be restricted by the movement restricting portion 12, thereby stabilizing the stacked state of the packaging units 1.

[0048] Sixth Embodiment Fig. 7(a) is a perspective view of a packing unit according to a sixth embodiment of the present invention, and Fig. 7(b) is a plan view of the packing unit 1 shown in Fig. 7(a). The packing unit 1 according to the sixth embodiment differs from that of the first embodiment in the shape of the object P to be packed and the shape of the movement restricting portion 12 of the packing member 10.

[0049] In this embodiment, the movement restricting portion 12 is formed in the storage recess 11. Specifically, the storage recess 11 includes a common recess 11A, and the common recess 11A that stores a common packaged object P is formed between adjacent packaging members 10, 10 of each packaging unit 1.

[0050] In this embodiment, the common recess 11A is formed by a bottom wall portion 11a and a side wall portion 11b. The common recess 11A is formed by dividing the bottom wall portion 11a and the side wall portion 11b of one accommodating recess 11 along two intersecting straight lines. In this embodiment, the common recess 11A is formed by dividing the bottom wall portion 11a and the side wall portion 11b of the accommodating recess 11 along straight lines L1 and L2.

[0051] As a result, in this embodiment, the surfaces where the bottom wall portions 11a, 11a of the packing members 10, 10 abut against each other and the surfaces where the side wall portions 11b, 11b abut against each other serve as restriction surfaces 12e that restrict linear movement of the packing members 10, 10. As a result, linear movement in both directions D1, D2 along the plane A can be restricted for adjacent packing members 10 of the same packing unit 1.

[0052] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made without departing from the spirit of the present invention as described in the claims. [Explanation of symbols]

[0053] 1: packaging unit, 10: packaging member, 11: storage recess, 11A: common recess, 12: movement restriction portion, 13: through hole, A: plane, CL: center line, P: packaged item

Claims

1. A packaging unit in which a plurality of packaging members, each of which contains at least one packaged object, are arranged on a plane, The packaging unit is used in a state where it is stacked vertically, Each of the packaging materials is a storage recess for storing the object to be packed, the storage recess surrounding a center line of the packaging unit along the up-down direction when the packaging units are stacked; a movement restriction portion that is formed in the storage recess or is formed closer to the center line than the storage recess and restricts movement along the plane with respect to an adjacent packing member of the same packing unit; A packaging unit comprising:

2. The packaging unit according to claim 1 , wherein the accommodating recess includes a common recess for accommodating the packaged object common to the adjacent packaging members of each of the packaging units.

3. The packaging unit according to claim 1 , wherein the packaging unit has a through hole formed closer to the center line than the receiving recess.

4. The packaging unit according to claim 1 , wherein the movement restricting portion restricts movement in a direction along two intersecting straight lines on the plane.

5. 2. The packaging unit according to claim 1, wherein the packaging members are of the same shape.

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