AU2020100139A4 - Packing container and sheet material for packing container - Google Patents

Abstract

[Abstract] An object of the present invention is to reliably and firmly connect two side surface portions while reducing the number of parts and materials to be used, in a connection portion of the two side surface portions. A packing container (1) including: a connection portion (16) connected to a second side surface portion (7) through a third fold portion (17), and placed along an inner surface of a first side surface portion (6) which is in an upright state with respect to a bottom surface portion (5); a strip portion (20) extending parallel to a longitudinal direction of the first side surface portion (6) such that a base end is connected to a plate surface of the first side surface portion (6), and a tip is separable from the first side surface portion (6); a first cut formed in the plate surface of the first side surface portion (6) such that the strip portion (20) is formed on an inner side; and an opening portion (22A) formed in a plate surface of the connection portion (16), and enabling insertion of the tip of the strip portion (20), wherein a side of the base end of the strip portion (20) is placed on an inner surface side of the connection portion (16), and the tip of the strip portion (20) is inserted into the opening portion (22A) from the inner surface side to an outer surface side of the connection portion (16).

Description

[DESCRIPTION] [Title of Invention] PACKING CONTAINER AND SHEET MATERIAL FOR PACKING CONTAINER [Technical Field] [0001]

The present invention relates to a packing container and a sheet material for packing container. [Background Art] [0002]

Conventionally, to pack a panel member, such as a decorative panel of a ceiling-embedded air conditioner, in a packing container, the panel member that is an item to be packed is generally packed by a combination of a tray-like lower box and an upper lid placed on the lower box. [0003]

In PTL 1 below, it is described to provide a locking mechanism capable of easily releasing locking between flaps connected to side walls and an end wall in order to facilitate opening of a lid in an assembled box. [Citation List] [Patent Literature] [0004] [PTL 1] Japanese Examined Utility Model Application, Publication No. Sho 61-7124 [Summary of Invention]

2020100139 29 Jan 2020 [Technical Problem] [0005]

Like the above PTL 1, the flaps and a wall surface are fixed to each other, so that a sheet material such as cardboard is in an assembled state as a box-like packing container. In the case where the sheet material is assembled in a box-like shape, the flaps and the wall surface are generally fixed by use of an adhesive, a staple, a tape or the like .

[0006]

In the case of the above-described fixing method, since another material different from the sheet material is used, there is a disadvantage that the number of steps in the assembly process is increased, and sorting may possibly be required when discarding the packing container, and more work and time may possibly be required. [0007]

The present invention has been made in view of such a situation and aims to provide a packing container and a sheet material for packing container, capable of reliably and firmly connecting two side surface portions while reducing the number of parts and materials to be used in a connection portion of the two side surface portions. [Solution to Problem] [0008]

2020100139 29 Jan 2020

A packing container according to a first aspect of the present invention includes: a bottom surface portion; a first side surface portion connected to the bottom surface portion through a first fold portion; a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion; a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion which is in an upright state with respect to the bottom surface portion; a strip portion extending parallel to a longitudinal direction of the first side surface portion such that a base end is connected to a plate surface of the first side surface portion, and a tip is separable from the first side surface portion; a first cut formed in the plate surface of the first side surface portion such that the strip portion is formed on an inner side; and an opening portion formed in a plate surface of the connection portion, and enabling insertion of the tip of the strip portion, wherein a side of the base end of the strip portion is placed on an inner surface side of the connection portion, and the tip of the strip portion is inserted into the opening portion from the inner surface side to an outer surface side of the connection portion. [0009]

According to this configuration, the first side surface

2020100139 29 Jan 2020 portion is connected to the bottom surface portion through the first fold portion, and the second side surface portion adjacent to the first side surface portion is connected to the bottom surface portion through the second fold portion. The first side surface portion is foldable with respect to the bottom surface portion at the first fold portion, the first side surface portion is foldable with respect to the bottom surface portion at the second fold portion, and a corner of the packing container is formed by the bottom surface portion, the first side surface portion, and the second side surface portion .

[0010]

The connection portion is connected to the second side surface portion through the third fold portion, the connection portion is foldable with respect to the second side surface portion at the third fold portion, and the second side surface portion and the connection portion have an L-shape. In a state in which the second side surface portion is upright with respect to the bottom surface portion, the connection portion is placed along the inner surface of the first side surface portion, so that it is possible to support a load in the height direction of the main body part, thereby improving the strength of the packing container.

[0011]

The first cut is formed in the plate surface of the first

2020100139 29 Jan 2020 side surface portion such that the strip portion is formed on the inner side, so that the strip portion extends parallel to the longitudinal direction of the first side surface portion such that the base end is connected to the plate surface of the first side surface portion, and the tip is separable from the first side surface portion. The side of the base end of the strip portion is placed on the inner surface side of the connection portion, and the tip of the strip portion is inserted into the opening portion from the inner surface side to the outer surface side of the connection portion. In this state, the connection portion is sandwiched between the strip portion and the first side surface portion, so that the first side surface portion and the connection portion are fixed to each other.

[0012]

In the above first aspect, a cutout portion enabling engagement with the side of the base end of the strip portion may be formed in an end portion of the connection portion. [0013]

According to this configuration, since the cutout portion is formed in the end portion of the connection portion, and the side of the base end of the strip portion is engaged with the cutout portion, positional misalignment between the strip portion and the connection portion is less likely to occur, and the first side surface portion and the connection portion

2020100139 29 Jan 2020 are more firmly fixed to each other. [0014]

In the above first aspect, the packing container may include: a main body part formed of a sheet material, including the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion; and a spacer formed of a different sheet material from the main body part, having a height equal to an internal measurement of each of the first side surface portion and the second side surface portion, and placed inside the main body part, wherein the spacer may include: a first reinforcing portion placed along the inner surface of the first side surface portion; and a second reinforcing portion connected to the first reinforcing portion through a fourth fold portion parallel to a height direction of the spacer, and placed along an inner surface of the second side surface portion. [0015]

According to this configuration, in the packing container, the main body part includes the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion, and the spacer is further provided separately from the main body part. The spacer is formed of the sheet material, and has the height equal or substantially equal to the internal measurement of each of the first side surface portion and the second side

2020100139 29 Jan 2020 surface portion. The first reinforcing portion and the second reinforcing portion are foldable at the fourth fold portion, so that the spacer has an L-shape. Consequently, by placing the spacer along the inner surfaces of the first side surface portion and the second side surface portion in a state in which the first side surface portion and the second side surface portion of the main body part are upright with respect to the bottom surface portion, it is possible to support a load in the height direction of the main body part, thereby improving the strength of the packing container.

[0016]

In the above first aspect, the spacer may be formed with a second opening portion in a plate surface of the second reinforcing portion, and the side of the base end of the strip portion placed on the inner surface side of the connection portion may be disposed in the second opening portion.

[0017]

According to this configuration, since the strip portion is placed on the inner surface of the connection portion, the strip portion protrudes more than the inner surface of the connection portion. However, the second opening portion is formed in the plate surface of the second reinforcing portion of the spacer, and the side of the base end of the strip portion placed on the inner surface side of the connection portion is disposed in the second opening portion, so that the

2020100139 29 Jan 2020 connection portion and the second reinforcing portion can be tightly attached.

[0018]

In the above first aspect, the packing container may further include: a first flap connected to the first side surface portion through a fifth fold portion; and a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap, wherein a side end portion of the first flap is formed in a direction inclined with respect to the first side surface portion and a side end portion of the second flap is formed in a direction inclined with respect to the second side surface portion such that the side end portion of the first flap and the side end portion of the second flap abut each other.

[0019]

According to this configuration, the first flap is connected to the first side surface portion through the fifth fold portion, and the second flap adjacent to the first flap is connected to the second side surface portion through the sixth fold portion. The side end portion of the first flap is formed in the direction inclined with respect to the first side surface portion, and the side end portion of the second flap is formed in the direction inclined with respect to the second side surface portion, so that the side end portion of the first flap and the side end portion of the second flap is

2020100139 29 Jan 2020 formed to be able to abut each other.

[0020]

The first flap is foldable with respect to the first side surface portion at the fifth fold portion, and the second flap is foldable with respect to the second side surface portion at the sixth fold portion, so that the side end portion of the first flap and the side end portion of the second flap abut each other, and thus a corner of the packing container is formed by the first side surface portion, the second side surface portion, the first flap and the second flap.

[0021]

In the above first aspect, the packing container may include: a main body part formed of a sheet material, including the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion; and a lid part formed of a different sheet material from the main body part and placed parallel to the bottom surface portion, wherein the main body part may further include: a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap, wherein the first insertion portion and the second insertion portion may be inserted into an insertion hole formed in the lid part.

2020100139 29 Jan 2020 [0022]

According to this configuration, in the packing container, the main body part includes the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion, and the lid part is further provided separately from the main body part. The lid part is a plate-like member, and is placed parallel to the bottom surface portion. The first insertion portion is foldable at the seventh fold portion formed in the side end portion of the first flap, and the second insertion portion is foldable at the eighth fold portion formed in the side end portion of the second flap. The first insertion portion and the second insertion portion are inserted into the insertion hole formed in the lid part. In this state, the first flap and the second flap are fixed to the lid part.

[0023]

A packing container according to a second aspect of the present invention includes: a main body part formed of a sheet material, the main body part including: a bottom surface portion; a first side surface portion connected to the bottom surface portion through a first fold portion; a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion; and a connection portion connected to the second side surface portion through a third fold portion, and

2020100139 29 Jan 2020 placed along an inner surface of the first side surface portion which is in an upright state with respect to the bottom surface portion; and a lid part formed of a different sheet material from the main body part, and placed parallel to the bottom surface portion, wherein the main body part further includes: a first flap connected to the first side surface portion through a fifth fold portion; a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap; a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap, wherein the first insertion portion and the second insertion portion are inserted into an insertion hole formed in the lid part.

[0024]

A sheet material for packing container according to third aspect of the present invention is a sheet material for packing container for forming a packing container, the sheet material for packing container including: a bottom surface portion; a first side surface portion connected to the bottom surface portion through a first fold portion; a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side

2020100139 29 Jan 2020 surface portion; a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion when the first side surface portion is upright with respect to the bottom surface portion; a strip portion extending parallel to a longitudinal direction of the first side surface portion such that a base end is connected to a plate surface of the first side surface portion, and a tip is separable from the first side surface portion; a first cut formed in the plate surface of the first side surface portion such that the strip portion is formed on an inner side; and an opening portion formed in a plate surface of the connection portion, and enabling insertion of the tip of the strip portion.

[0025]

A sheet material for packing container according to a fourth aspect of the present invention is a sheet material for packing container for forming a packing container, the sheet material for packing container including: a bottom surface portion; a first side surface portion connected to the bottom surface portion through a first fold portion; a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion; a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion which

2020100139 29 Jan 2020 is in an upright state with respect to the bottom surface portion; a first flap connected to the first side surface portion through a fifth fold portion; a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap; a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap.

[Advantageous Effects of Invention] [0026]

According to this invention, it is possible to reliably and firmly connect two side surface portions while reducing the number of parts and materials to be used, in a connection portion of the two side surface portions. [Brief Description of Drawings] [0027] [FIG. 1]

FIG. 1 is a plan view showing a sheet material for forming the main body part of a packing container according to one embodiment of the present invention.

[FIG. 2]

FIG. 2 is a partially enlarged plan view showing the sheet material for forming the main body part of the packing

2020100139 29 Jan 2020 container according to one embodiment of the present invention .

[FIG. 3]

FIG. 3 is an exploded perspective view showing the packing container according to one embodiment of the present invention .

[FIG. 4]

FIG. 4 is a perspective view showing the packing container according to one embodiment of the present invention . [FIG. 5]

FIG. 5 is a plan view showing the packing container according to one embodiment of the present invention. [FIG. 6]

FIG. 6 is a bottom view showing the packing container according to one embodiment of the present invention.

[FIG. 7]

FIG. 7 is a side view showing the packing container according to one embodiment of the present invention. [FIG. 8]

FIG. 8 is a longitudinal sectional view showing the main body part of the packing container according to one embodiment of the present invention, seen in the arrow direction from the VIII-VIII line of FIG. 3.

[FIG. 9]

2020100139 29 Jan 2020

FIG. 9 is a cross-sectional view showing the main body part of the packing container according to one embodiment of the present invention, seen in the arrow direction from the IX-IX line of FIG. 8. [FIG. 10]

FIG. 10 is a partially enlarged perspective view showing the main body part of the packing container according to one embodiment of the present invention, and showing a state before a strip portion is inserted into an opening portion. [FIG. 11]

FIG. 11 is a partially enlarged perspective view showing the main body part of the packing container according to one embodiment of the present invention, and showing a state in which the strip portion is inserted into the opening portion. [FIG. 12]

FIG. 12 is a perspective view showing an example of a panel member. [Description of Embodiment] [0028]

Hereinafter, a packing container 1 according to one embodiment of the present invention will be described with reference to the drawings.

The packing container 1 according to the present embodiment is formed of a sheet material (plate material), and is for storing a panel member 60 such as a decorative panel of

2020100139 29 Jan 2020 a ceiling-embedded air conditioner as shown, for example, in FIG. 12. The panel member 60 is, for example, quadrangular in shape in a plan view, and has a shape with a lower height relative to the width and depth of a plate surface of the panel member 60. In the case where the packing container 1 according to this embodiment has an inclined surface formed from a central portion toward each side in a plate surface on a design surface side of the panel member 60, the panel member 60 can be suitably packed by the sheet material without using a buffer material such as styrene foam other than a plate material such as cardboard.

Here, the sheet material is also called a blank, and is a flat cardboard made of paper. The sheet material is folded along fold lines and assembled into the box-like packing container 1. The sheet material is not limited to cardboard made of paper, and may be plastic cardboard or thick paper other than cardboard as long as suitable for packing.

[0029]

As shown in FIG. 3, the packing container 1 includes: a main body part 2 including a bottom surface portion 5, first side surface portions 6, second side surface portions 7, and a first inclined surface portion 8; spacers 3 placed along the inner surfaces of the first side surface portions 6 and the second side surface portions 7 of the main body part 2; and a lid part 4 that covers the main body part 2. When the panel

2020100139 29 Jan 2020 member 60 is stored in the main body part 2, the lid part 4 covers the stored panel member 60.

[0030]

As shown in FIG. 1, the main body part 2 is a container which is formed by assembling one blank sheet and has a shape of a relatively shallow tray when assembled, and further has flaps 9 that can further cover four sides of the lid part 4 from the upper surface of the lid part 4. [0031]

The bottom surface portion 5 of the main body part 2 has a shape conforming to the planar shape of the panel member 60 to be stored, and, for example, when the panel member 60 has a square shape, the bottom surface portion 5 also has a square shape. When the bottom surface portion 5 has a quadrangular shape, the first side surface portions 6 and the first inclined surface portions 8 are provided on a pair of two sides facing each other among the four sides of the bottom surface portion 5. Moreover, the second side surface portions 7 are provided on another pair of two sides facing each other among the four sides of the bottom surface portion 5. [0032]

The first inclined surface portion 8 is provided continuously to the bottom surface portion 5 through a first fold line 11 at a middle portion of one side of the bottom surface portion 5. The first inclined surface portion 8 is

2020100139 29 Jan 2020 placed to be inclined with respect to the bottom surface portion 5 when assembled. The first inclined surface portion 8 has a rectangular shape, and the longitudinal direction is parallel to the one side of the bottom surface portion 5 provided with the first inclined surface portion 8. The length in the longitudinal direction of the first inclined surface portion 8 is shorter than the length of the one side of the bottom surface portion 5 provided with the first inclined surface portion 8 (length from one corner to another corner). [0033]

The first side surface portion 6 is provided continuously to the first inclined surface portion 8 through a second fold line 12. The first side surface portion 6 is placed vertically to the bottom surface portion 5 when assembled. The first side surface portion 6 has a substantially rectangular shape, and the longitudinal direction is parallel to one side of the bottom surface portion 5 located adjacent to the first side surface portion 6. The longitudinal direction of the first side surface portion 6 has a length equal to one side of the bottom surface portion 5 located adjacent to the first side surface portion 6. [0034]

On the bottom surface portion 5, the first fold line 11 is formed on a side close to the center of the bottom surface

2020100139 29 Jan 2020 portion 5 with respect to a contact line of the bottom surface portion 5 and a first side surface portion 6. The first fold line 11 is provided parallel to the one side of the bottom surface portion 5 on the middle portion of the one side of the bottom surface portion 5.

[0035]

On the first side surface portion 6, a second fold line 12 is formed on a side close to the center of the first side surface portion 6 with respect to a contact line of the bottom surface portion 5 and the first side surface portion 6. The second fold line 12 is parallel to the first fold line 11, and has the same length as the first fold line 11, for example. [0036]

A first cut 13 is formed, for example, vertically to the first fold line 11 and the second fold line 12, and is formed on a virtual line connecting an end portion of the first fold line 11 and an end portion of the second fold line 12. By formation of the first cut 13, the bottom surface portion 5 and the first inclined surface portion 8 are separated, and the first side surface portion 6 and the first inclined surface portion 8 are separated. [0037]

A second cut 14 is formed along the one side of the bottom surface portion 5 and one side of the first side surface portion 6, and is formed on a virtual line connecting

2020100139 29 Jan 2020 a corner of the bottom surface portion 5, that is, a corner of the first side surface portion 6 and a middle portion of the first cut 13. The second cut 14 is parallel to the first fold line 11 or the second fold line 12. By formation of the second cut 14, the bottom surface portion 5 and the first side surface portion 6 are separated.

[0038]

In an assembled state, the first inclined surface portion 8 is not formed between the corner of the first side surface portion 6 or the corner of the bottom surface portion 5 and the middle portion of the first cut 13 by the second cut 14, and the first side surface portion 6 is separated from the bottom surface portion 5, and stands vertically to the bottom surface portion 5. The bottom surface portion 5 and the first inclined surface portion 8 are separated by the first cut 13, and therefore the first inclined surface portion 8 is foldable with respect to the bottom surface portion 5 on the first fold line 11, and the first inclined surface portion 8 is inclined with respect to the bottom surface portion 5. The first side surface portion 6 and the first inclined surface portion 8 are separated by the first cut 13, and therefore the first inclined surface portion 8 is foldable with respect to the first side surface portion 6 on the second fold line 12, and the first inclined surface portion 8 is inclined with respect to the first side surface portion 6.

2020100139 29 Jan 2020 [0039]

In a state in which the first side surface portion 6 stands vertically to the bottom surface portion 5, a portion where the first side surface portion 6 and the first inclined surface portion 8 are separated in the first cut 13 has a height eguivalent to the height of the first inclined surface portion 8. [0040]

The second side surface portion 7 is provided continuously to the bottom surface portion 5 through a third fold line 15. The second side surface portion 7 is placed vertically to the bottom surface portion 5 when assembled. The second side surface portion 7 has a substantially rectangular shape, and the longitudinal direction is parallel to one side of the bottom surface portion 5 provided continuously to the second side surface portion 7. The longitudinal direction of the second side surface portion 7 has a length egual to one side of the bottom surface portion 5 provided continuously to the second side surface portion 7. [0041]

A connection portion 16 has, for example, a rectangular shape, and is connected to the second side surface portion 7 through a sixth fold line 17. The first side surface portion 6 and the connection portion 16 are separated by a cut 18 formed on an extended line of the third fold line 15. The

2020100139 29 Jan 2020 connection portion 16 is placed along the inner surface of the first side surface portion 6 which is in an upright state with respect to the bottom surface portion 5.

[0042]

The connection portion 16 has an inside plate 16A and an outside plate 16B. The inside plate 16A and the outside plate 16B are connected to each other through a fold line 19. The inside plate 16A is connected to the second side surface portion 7 through the sixth fold line 17. Hence, when the connection portion 16 is placed along the inner surface of the first side surface portion 6, the inside plate 16A is located on the inside, and the outside plate 16B which is folded outward on the fold line 19 is located on the outside. As a result, the connection portion 16 has a double-plate structure with a stack of the inside plate 16A and the outside plate 16B. [0043]

According to this configuration, the connection portion 16 is connected to second side surface portion 7 through the sixth fold line 17, the connection portion 16 is foldable with respect to the second side surface portion 7 on the sixth fold line 17, and the second side surface portion 7 and the connection portion 16 have an L shape. By placing the connection portion 16 along the inner surface of the first side surface portion 6 in a state in which the second side

2020100139 29 Jan 2020 surface portion 7 stands on the bottom surface portion 5, it is possible to support a load in the height direction of the main body part 2, thereby improving the strength of the packing container 1.

[0044]

In the above-described embodiment, the case where the connection portion 16 has a double-plate structure with the inside plate 16A and the outside plate 16B is described, but the present embodiment is not limited to this example, and it is possible to have a single plate structure without a foldedback part, or a structure with a stack of three or more plates .

[0045]

In the first side surface portion 6, a strip portion 20 having a long strip shape in one direction is formed. As shown in FIG. 2, in the strip portion 20, a base end 20a is connected to a plate surface of the first side surface portion 6, and a tip 20b side can be separated from the first side surface portion 6. The strip portion 20 extends parallel to the longitudinal direction of the first side surface portion

6.

[0046]

Formed on the inside of the plate surface of the first side surface portion 6 is a cut 21 through which the strip portion 20 except the base end 20a is pulled. With the cut

4

2020100139 29 Jan 2020

21, the strip portion 20 is formed so that the base end 20a is connected to the first side surface portion 6 and the tip 20b side is in a cantilevered state with respect to the first side surface portion 6.

[0047]

As shown in FIG. 2, opening portions 22A and 22B, which allow insertion of the tip 20b of the strip portion 20, are formed in the plate surfaces of the inside plate 16A and the outside plate 16B, respectively, of the connection portion 16. The two opening portions 22A and 22B of the inside plate 16A and the outside plate 16B are formed to coincide with each other in a state in which the inside plate 16A and the outside plate 16B are stacked. The first side surface portion 6 and the connection portion 16 are fixed by engagement of the strip portion 20 and the opening portions 22A, 22B.

[0048]

Cutout portions 23A and 23B, each having a recessed shape in the central portion in the height direction, are formed in an end portion of each of the inside plate 16A and the outside plate 16B of the connection portion 16. As shown in FIG. 10, the base end 20a side of the strip portion 20 can be engaged with the cutout portions 23A, 23B. Thus, since the base end 20a side of the strip portion 20 is engaged with the cutout portions 23A, 23B, positional misalignment between the strip portion 20 and the connection portion 16 is less likely to

2020100139 29 Jan 2020 occur, and the first side surface portion 6 and the connection portion 16 are more firmly fixed to each other.

[0049]

When forming a corner of the packing container 1 by the bottom surface portion 5, the first side surface portion 6 and the second side surface portion 7, the base end 20a side of the strip portion 20 is placed on the inner surface side of the connection portion 16, and, as shown in FIGS. 8, 9 and 11, the tip 20b of the strip portion 20 is inserted into the opening portions 22A, 22B from the inner surface side to the outer surface side of the connection portion 16. Consequently, the strip portion 20 and the opening portions 22A, 22B are engaged. In this state, the connection portion 16 is sandwiched between the strip portion 20 and the first side surface portion 6, and the first side surface portion 6 and the connection portion 16 are fixed to each other. [0050]

It is desirable to set the length of the strip portion 20 so that the tip 20b of the strip portion 20 does not protrude from the outer surface of the first side surface portion 6 when the tip 20b of the strip portion 20 is inserted into the opening portions 22A, 22B from the inner surface side to the outer surface of the connection portion 16. Accordingly, in the packing container 1, since there is no member protruding from the outer surface of the first side surface portion 6,

2020100139 29 Jan 2020 the packing container 1 has no portion to be caught and is easily transported. Further, the packing container 1 can be placed without a gap on the wall surface of a container or the like which is in contact with the outer peripheral surface side of the first side surface portion 6. [0051]

As shown in FIG. 3, when assembled, the spacer 3 has a substantially a square-bracket shape in a plan view and is placed along the inner surfaces of the first side surface portion 6 and the second side surface portion 7 of the main body part 2. The spacer 3 is a plate-like member, and has a height substantially equal to an internal measurement of the second side surface portion 7. In a state in which the second side surface portion 7 of the main body part 2 stands on the bottom surface portion 5, when the spacers 3 are placed along the inner surfaces of the first side surface portions 6 and the second side surface portions 7, it is possible to support a load in the height direction of the main body part 2, thereby improving the strength of the packing container 1. [0052]

The spacer 3 is formed by assembling one blank sheet different from the blank of the main body part 2. The spacer 3 has a first reinforcing portion 31, second reinforcing portions 32 and a second inclined surface portion 33.

The first reinforcing portion 31 has a substantially

2020100139 29 Jan 2020 rectangular shape, and is placed along the inner surface of the second side surface portion 7. The second reinforcing portions 32 have a substantially rectangular shape, and are connected to both ends of the first reinforcing portion 31 through the fourth fold lines 35 parallel to the height direction of the spacer 3.

The second reinforcing portion 32 is placed along the inner surface of the first side surface portion 6.

The second inclined surface portion 33 is connected to the first reinforcing portion 31 through a fifth fold line 36 parallel to the horizontal direction. When the second inclined surface portion 33 is placed on the main body part 2 the second inclined surface portion 33 is placed to be inclined with respect to the bottom surface portion 5. [0053]

On a plate surface of the first reinforcing portion 31, two third cuts are formed parallel to the height direction of the spacer 3 such that the first reinforcing portion 31 and the second inclined surface portion 33 are separated. Consequently, the second inclined surface portion 33 is foldable with respect to the first reinforcing portion 31 on the fifth fold line 36, and the second inclined surface portion 33 is inclined with respect to the bottom surface portion 5.

[0054]

2020100139 29 Jan 2020

In a state in which the spacer 3 is placed on the main body part 2, cut portions of the third cuts has a height equivalent to the height of the second inclined surface portion 33 such that the first reinforcing portion 31 of the spacer 3 stands on the bottom surface portion 5. [0055]

In the spacer 3, a second opening portion 37 is formed in a plate surface of the second reinforcing portion 32. The strip portion 20 provided on the inner surface side of the connection portion 16 is placed in the second opening portion 37. When the tip 20b of the strip portion 20 is inserted into the opening portions 22A, 22B of the connection portion 16 from the inner surface side to the outer surface side of the connection portion 16, since the strip portion 20 is placed on the inner surface of the connection portion 16, the tip 20b protrudes more than the inner surface of the connection portion 16. By forming the second opening portion 37 in the second reinforcing portion 32 of the spacer 3 and placing the strip portion 20 in the second opening portion 37, the connection portion 16 and the second reinforcing portion 32 can be closely attached. [0056]

As shown in FIG. 3, the lid part 4 has a shape conforming to the planar shape of the panel member 60 to be packed, and has a shape conforming to the planar shape of the panel member

2020100139 29 Jan 2020 to be stored, and, for example, when the panel member 60 has a square shape, the lid part 4 also has a substantially square shape. [0057]

In order to assemble the packing container 1 from the above-mentioned blank, first, the main body part 2 and the spacers 3 are assembled individually, and the assembled spacers 3 are placed inside the assembled main body part 2. Then, the panel member 60, which is an item to be packed, is placed inside the main body part 2 and the spacers 3. Thereafter, the lid part 4 is placed on the panel member 60, and further the upper surface of the four sides of the lid part 4 is covered with the flaps 9 provided on the main body part 2. Consequently, as shown in FIGS. 4 to 7, the assembly of the packing container 1 is completed, and the panel member 60 is packed in the packing container 1. [0058]

Hereinafter, the assembly of the main body part 2 will be described.

First, the first inclined surface portion 8 and the first side surface portion 6 are set upright with respect to the bottom surface portion 5 of the plate-like blank. At this time, the first inclined surface portion 8 is folded inward by the first fold line 11, the first side surface portion 6 is folded inward by the second fold line 12. When the one side

2020100139 29 Jan 2020 of the first side surface portion 6 separated from the bottom surface portion 5 by the second cut 14 is placed on the same plane as the bottom surface portion 5, and the first side surface portion 6 is provided vertically to the bottom surface portion 5, the second fold line 12 is disposed at a higher position than the bottom surface portion 5. The portion where the first side surface portion 6 and the first inclined surface portion 8 are separated in the first cut 13 becomes the height of the second fold line 12, and is equivalent to the height of the first inclined surface portion 8.

Consequently, the first inclined surface portion 8 is inclined with respect to the bottom surface portion 5.

[0059]

The second side surface portion 7 is set upright with respect to the bottom surface portion 5 of the plate-like blank. At this time, the second side surface portion 7 is folded inward on the third fold line 15, and the second side surface portion 7 is set vertical to the bottom surface portion 5.

[0060]

Then, the connection portion 16 is folded inward on the sixth fold line 17 so that an angle formed between the connection portion 16 and the second side surface portion 7 is 90°, thereby making an L shape. As a result, in the state in which the second side surface portion 7 stands on the bottom

2020100139 29 Jan 2020 surface portion 5, the connection portion 16 is placed along the inner surface of the first side surface portion 6. When the first side surface portion 6 is provided vertically to the bottom surface portion 5, the one side of the first side surface portion 6 separated from the bottom surface portion 5 by the second cut 14 is separated from the one side of the bottom surface portion 5, so that a gap is formed. The sixth fold line 17 is formed such a position that the connection portion 16 is fitted into this gap. In a state in which the second side surface portion 7 and the connection portion 16 are assembled, the connection portion 16 is fitted into the gap between the first side surface portion 6 and the bottom surface portion 5, so that the gap is closed.

[0061]

Further, when forming a corner of the packing container 1 by the bottom surface portion 5, the first side surface portion 6, and the second side surface portion 7, the connection portion 16 is placed along the inner surface of the first side surface portion 6. Consequently, the second side surface portion 7 and the connection portion 16 have an L shape. At this time, the inside plate 16A of the connection portion 16 is placed on the inner side, and the outside plate 16B which is folded outward on the fold line 19 is placed on the outer side.

[0062]

2020100139 29 Jan 2020

Then, the strip portion 20 is pulled through the cut 21 formed on the inner side of the plate surface of the first side surface portion 6 while leaving the base end 20a. Thus, the strip portion 20 is formed so that the base end 20a is connected to the first side surface portion 6 and the tip 20b is in a cantilevered state with respect to the first side surface portion 6. [0063]

In order to engage the strip portion 20 with the opening portions 22A, 22B and connect the first side surface portion 6 and the connection portion 16, first, the base end 20a side of the strip portion 20 is fitted into the cutout portions 23A, 23B formed at the end portion of the connection portion 16. Then, the base end 20a side of the strip portion 20 is placed on the inner surface side of the connection portion 16, and the tip 20b of the strip portion 20 is inserted into the opening portions 22A, 22B from the inner surface side to the outer surface side of the connection portion 16. Consequently, the strip portion 20 and the opening portions 22A, 22B are engaged. In this state, the connection portion 16 is sandwiched between the strip portion 20 and the first side surface portion 6, and the first side surface portion 6 and the connection portion 16 are fixed to each other. [0064]

Hereinafter, assembly of the spacer 3 and placement to

2020100139 29 Jan 2020 the main body part 2 will be described.

The second reinforcing portions 32 connected to the both ends of the first reinforcing portion 31 of the spacer 3 are bent inward by the fourth fold lines 35. Consequently, when the spacer 3 is placed on the main body part 2, an angle formed by the first reinforcing portion 31 and each second reinforcing portion 32 becomes 90°, and the spacer 3 can have an L-shape. [0065]

The second inclined surface portion 33 is bent inward between the two third cutouts by the fifth fold line 36, and the second inclined surface portion 33 is inclined with respect to the first reinforcing portion 31. Consequently, when the spacer 3 is placed on the main body part 2, the first reinforcing portion 31 is placed along an inner surface of the second side surface portion 7, and the second reinforcing portions 32 are placed along an inner surface of the first side surface portions 6. The second inclined surface portion 33 is placed to be inclined with respect to the bottom surface portion 5.

[0066]

Thus, inside the main body part 2, the first inclined surface portions 8 are provided on a pair of two sides facing each other among the four sides of the bottom surface portion 5, and the second inclined surface portions 33 are provided on

2020100139 29 Jan 2020 a pair of other two sides facing each other among the four sides of the bottom surface portion 5. The first inclined surface portions 8 each have an inclination, the height of which increases from the bottom surface portion 5 toward the first side surface portion 6, and the second inclined surface portions 33 each have an inclination, the height of which increases from the bottom surface portion 5 toward the first reinforcing portion 31 and the second side surface portion 7. [0067]

In the case where the design surface side of the panel member 60 such as a decorative panel of a ceiling-embedded air conditioner is not merely a flat plate surface, and the inclined surface is formed toward each side from the central portion, the first inclined surface portions 8 and the second inclined surface portions 33 can prevent inclination and positional misalignment of the panel member 60 in the packing container 1 without separately placing any buffer material. [0068]

Next, the lid part 4, and the flap 9 formed in the main body part 2, which covers the four sides of the lid part 4, will be described.

In the main body part 2 according to this embodiment, the flap 9 is composed of first flaps 9A connected to the first side surface portions 6 through fold portions 24, and second flaps 9B connected to the second side surface portions 7

2020100139 29 Jan 2020 through fold portions 25.

[0069]

When the packing container 1 is assembled, each first flap 9A and each second flap 9B are adjacent. At this time, a side end portion 9A-a of the first flap 9A is formed in the direction inclined (for example, 45°) with respect to the longitudinal direction of the first side surface portion 6 and a side end portion 9B-a of the second flap 9B is formed in the direction inclined (for example, 45°) with respect to the longitudinal direction of the second side surface portion 7 such that the side end portion 9A-a of the first flap 9A and the side end portion 9B-a of the second flap 9B abut each other . [0070]

The first flap 9A is foldable with respect to the first side surface portion 6 at the fold portion 24, the second flap 9B is foldable with respect to the second side surface portion 7 at the sixth fold portion, and the side end portion 9A-a of the first flap 9A and the side end portion 9B-a of the second flap 9B abut each other, and thus a corner of the packing container 1 is formed by the first side surface portion 6, the second side surface portion 7, and the first flap 9A and the second flap 9B. [0071]

A fold portion 26 is formed at the side end portion 9A-a

2020100139 29 Jan 2020 of the first flaps 9A, and a first insertion portion 27 is connected to the first flap 9A through the fold portion 26. A fold portion 28 is formed at the side end portion 9B-a of the second flaps 9B, and a second insertion portion 29 is connected to the second flaps 9B through the fold portion 28. Consequently, the first insertion portion 27 is foldable at the fold portion 26 formed at the side end portion 9A-a of the first flaps 9A, and the second insertion portion 29 is foldable at the fold portion 28 formed at the side end portion 9B-a of the second flaps 9B.

[0072]

An insertion hole 41 is formed in the lid part 4, and the first insertion portion 27 and the second insertion portion 29 are inserted into the insertion hole 41. In this state, the first flap 9A and the second flap 9B are fixed to the lid part 4 .

[0073]

An insertion portion 51 is connected to a central portion of a front end portion 9A-b of the first flap 9A. An insertion portion 52 is connected to a central portion of a front end portion 9B-b of the second flaps 9B. An insertion hole 42 is formed in the lid part 4, and each of the insertion portion 51 and the insertion portion 52 is inserted into the insertion hole 42. Consequently, a middle portion of the first flap 9A and a middle portion of the second flap 9B are

2020100139 29 Jan 2020 fixed such that a gap is not formed with respect to the lid part 4.

[0074]

The front end portion 9A-b of the first flap 9A and the front end portion 9B-b of the second flap 9B each have an arc shape. Therefore, both side tips of the front end portion 9Ab of the first flap 9A, and a tip of the insertion portion 51 are disposed on the same straight line. Therefore, when the insertion portion 51 is formed, the insertion portion 51 is not formed at a protruding position, and is not formed at a position protruding from a line connecting the both side tips of the front end portion 9A-b of the first flap 9A, but is formed on the inner side with respect to this line. Therefore, when the blank is formed, a material that becomes wasteful can be reduced.

[0075]

When a portion of one packing container 1 is overlappingly placed on another packing container 1, and thereafter the packing container 1 placed on the other packing container 1 is slid, a corner of the packing container 1 placed on the other packing container 1 moves along the front end portion 9A-b of the first flap 9A and the front end portion 9B-b of the second flap 9B. Then, the corner of the packing container 1 placed on the other packing container 1 is guided toward a center of front end portion 9A-b of the first

2020100139 29 Jan 2020 flap 9A or a center of the front end portion 9B-b of the second flap 9B since the front end portion 9A-b of the first flap 9A and the front end portion 9B-b of the second flap 9B each have the arc shape. Since the insertion portion 51, 52 are formed at the center of the front end portion 9A-b of the first flap 9A and the center of the front end portion 9B-b of the second flap 9B, respectively, the corner of the packing container 1 placed on the other packing container 1 rides over each of the insertion portions 51, 52. [0076]

Therefore, in the case of this embodiment, compared to the case where the front end portion 9A-b of the first flap 9A and the front end portion 9B-b of the second flap 9B do not have the arc shape and are linearly formed, the packing container 1 placed on the other packing container 1 can be smoothly slid without being caught on the flaps 9A, 9B, and a plurality of the packing containers 1 can be easily overlapped. [Reference Signs List] [0077]

Packing container

Main body part

Spacer

Lid part

Bottom surface portion

2020100139 29 Jan 2020

First side surface portion

Second side surface portion

First inclined surface portion

Flap

9A First flap

9A-a Side end portion

9A-b Front end portion

9B Second flap

9B-a Side end portion

9B-b Front end portion

First fold line

Second fold line

First cut

Second cut

Third fold line

Connection portion

6A Inside plate

16B Outside plate

Sixth fold line

Cut

Fold line

Strip portion

20a Base end

20b Tip

Cut

2020100139 29 Jan 2020

22A Opening portion

22B Opening portion

23A Cutout portion

23B Cutout portion

Fold portion

Fold portion

Fold portion

First insertion portion

Fold portion

Second insertion portion

First reinforcing portion

Second reinforcing portion

Second inclined surface portion

Fourth fold line

Fifth fold line

Second opening portion

Insertion hole

Insertion hole

Insertion portion

Insertion portion

Claims (9)

1. [CLAIMS]

   1. A packing container comprising:

   a bottom surface portion;

   a first side surface portion connected to the bottom surface portion through a first fold portion;

   a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion;

   a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion which is in an upright state with respect to the bottom surface portion;

   a strip portion extending parallel to a longitudinal direction of the first side surface portion such that a base end is connected to a plate surface of the first side surface portion, and a tip is separable from the first side surface portion;

   a first cut formed in the plate surface of the first side surface portion such that the strip portion is formed on an inner side; and an opening portion formed in a plate surface of the connection portion, and enabling insertion of the tip of the strip portion, wherein a side of the base end of the strip portion is placed on an inner surface side of the connection portion, and the tip

   2020100139 29 Jan 2020 of the strip portion is inserted into the opening portion from the inner surface side to an outer surface side of the connection portion.
2. 2. The packing container according to claim 1, wherein a cutout portion enabling engagement with the side of the base end of the strip portion is formed in an end portion of the connection portion.
3. 3. The packing container according to claim 2, comprising:

   a main body part formed of a sheet material, including the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion; and a spacer formed of a different sheet material from the main body part, having a height equal to an internal measurement of each of the first side surface portion and the second side surface portion, and placed inside the main body part, wherein the spacer includes:

   a first reinforcing portion placed along the inner surface of the first side surface portion; and a second reinforcing portion connected to the first reinforcing portion through a fourth fold portion parallel to a height direction of the spacer, and placed along an inner

   2020100139 29 Jan 2020 surface of the second side surface portion.
4. 4. The packing container according to claim 3, wherein the spacer is formed with a second opening portion in a plate surface of the second reinforcing portion, and the side of the base end of the strip portion placed on the inner surface side of the connection portion is disposed in the second opening portion.
5. 5. The packing container according to any one of claims 1 to 4, further comprising:

   a first flap connected to the first side surface portion through a fifth fold portion; and a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap, wherein a side end portion of the first flap is formed in a direction inclined with respect to the first side surface portion and a side end portion of the second flap is formed in a direction inclined with respect to the second side surface portion such that the side end portion of the first flap and the side end portion of the second flap abut each other.
6. 6. The packing container according to claim 5, comprising:

   a main body part formed of a sheet material, including

   2020100139 29 Jan 2020 the bottom surface portion, the first side surface portion, the second side surface portion, and the connection portion; and a lid part formed of a different sheet material from the main body part and placed parallel to the bottom surface portion, wherein the main body part further includes:

   a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap, wherein the first insertion portion and the second insertion portion are inserted into an insertion hole formed in the lid part.
7. 7. A packing container comprising:

   a main body part formed of a sheet material, the main body part including:

   a bottom surface portion;

   a first side surface portion connected to the bottom surface portion through a first fold portion;

   a second side surface portion connected to the bottom surface portion through a second fold portion and

   2020100139 29 Jan 2020 adjacent to the first side surface portion; and a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion which is in an upright state with respect to the bottom surface portion; and a lid part formed of a different sheet material from the main body part, and placed parallel to the bottom surface portion, wherein the main body part further includes:

   a first flap connected to the first side surface portion through a fifth fold portion;

   a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap;

   a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap, wherein the first insertion portion and the second insertion portion are inserted into an insertion hole formed in the lid part.

   2020100139 29 Jan 2020
8. 8. A sheet material for packing container for forming a packing container, the sheet material for packing container comprising:

   a bottom surface portion;

   a first side surface portion connected to the bottom surface portion through a first fold portion;

   a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion;

   a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion when the first side surface portion is upright with respect to the bottom surface portion;

   a strip portion extending parallel to a longitudinal direction of the first side surface portion such that a base end is connected to a plate surface of the first side surface portion, and a tip is separable from the first side surface portion;

   a first cut formed in the plate surface of the first side surface portion such that the strip portion is formed on an inner side; and an opening portion formed in a plate surface of the connection portion, and enabling insertion of the tip of the strip portion.

   2020100139 29 Jan 2020
9. 9. A sheet material for packing container for forming a packing container, the sheet material for packing container comprising:

   a bottom surface portion;

   a first side surface portion connected to the bottom surface portion through a first fold portion;

   a second side surface portion connected to the bottom surface portion through a second fold portion and adjacent to the first side surface portion;

   a connection portion connected to the second side surface portion through a third fold portion, and placed along an inner surface of the first side surface portion which is in an upright state with respect to the bottom surface portion;

   a first flap connected to the first side surface portion through a fifth fold portion;

   a second flap connected to the second side surface portion through a sixth fold portion and adjacent to the first flap;

   a first insertion portion connected to the first flap through a seventh fold portion formed on the side end portion of the first flap; and a second insertion portion connected to the second flap through an eighth fold portion formed on the side end portion of the second flap.