JP2020033045A - Packaging box - Google Patents

Abstract

To provide a packaging box which can be opened easily and can display the contents, while securing strength.SOLUTION: A packaging box 1 includes a body box 10 and a lid body 30. The body box 10 includes: a cylindrical body part 11 including front and back end walls 12, 12 and left and right side walls 13, 13; and a bottom plate 20 for closing a lower side opening part of the body part 11. At the side wall 13, a side surface opening part 15 is formed. The lid body 30 includes a top plate 31 for closing an upper side opening part 11a of the body part 11, and a vertical plate 32 provided continuous to the top plate 31 and overlapped on the inner surface of the side wall 13, and the side surface opening part 15 is closed by the vertical plate 32. A lower end part of the vertical plate 32 comes into contact with an upper surface of the bottom plate 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging box.

  As a packaging box made of corrugated cardboard, there is a packaging box that includes a cylindrical body, a bottom plate and a top plate, and can cut off a part of the top plate and side walls from the body and open the contents to display the contents (for example, And Patent Document 1).

JP 2018-111527 A

  In the above-mentioned conventional packaging box, when cutting off a part of the top plate and the side wall from the trunk, it is difficult to cut out the cutting guide line formed in the trunk. In particular, in the case where W-flute corrugated cardboard (double-sided corrugated cardboard) is used to increase the strength of the packaging box, the cutting guide wire is cut open by a strong force, so that the packaging box is very difficult to open.

  SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a packaging box that can be easily opened to display contents while ensuring sufficient strength.

  In order to solve the above problems, the present invention is a packaging box, which includes a body box and a lid. The body box has a cylindrical body having front and rear end walls and left and right side walls, and a bottom plate closing a lower opening of the body, and a side opening on the side wall. A part is formed. The lid has a top plate closing an upper opening of the trunk, and a vertical plate connected to the top plate and superimposed on an inner surface of the side wall. The side opening is closed. The lower edge of the vertical plate is in contact with the upper surface of the bottom plate.

In the packaging box of the present invention, by lifting the lid and removing the lid from the body box, the upper opening of the body box can be opened and the side opening can be opened on the side wall of the body. Thus, the packaging box of the present invention can be easily opened to display the contents.
In the packaging box of the present invention, since it is not necessary to cut out the top and the wall at the time of opening, even if the strength is increased using, for example, a corrugated cardboard of a W flute, the packaging box can be easily opened.
In the packaging box of the present invention, the lower edge of the vertical plate of the lid abuts on the upper surface of the bottom plate, so that the load resistance can be increased.

In the packaging box described above, it is preferable that an upper flap is continuously provided at an upper edge portion of the end wall, and a lower surface of the top plate is overlapped with an upper surface of the upper flap.
In this configuration, since the upper flap supports the top plate, the load capacity of the packaging box can be further increased. Further, even when the lid is removed from the body box, the upper flap is arranged in the upper opening of the body box, so that another packaging box can be stably stacked on the upper surface of the upper flap.

  In the above-mentioned packaging box, when the upper flap is connected to the upper edge of the end wall via a cutting guide line, the upper flap is cut off from the body box after the lid is removed from the body box. It will be easier. Therefore, the entire upper opening of the body box can be easily opened. This makes it easier to remove the contents from the body box.

In the above-mentioned packaging box, it is preferable that the upper end of the vertical plate of the lid be sandwiched between the inner surface of the side wall and the side edge of the upper flap.
When assembling such a lid to the body box, if the vertical plate is inserted from above into the space between the side wall and the upper flap, the vertical plate can be prevented from inclining inside the body box. Accordingly, when the lid is assembled to the body box, the lower edge of the vertical plate can be prevented from strongly hitting the contents, so that the vertical plate can be smoothly inserted into the body box.

  In the packaging box of the present invention, since it is not necessary to cut out the top or wall at the time of opening, the contents can be easily opened and the contents displayed. Further, in the packaging box of the present invention, the lower edge of the vertical plate of the lid is in contact with the upper surface of the bottom plate, so that the load resistance can be increased.

It is the perspective view which looked at the packaging box concerning the embodiment of the present invention from the front upper left. It is the perspective view which looked at the body box and the lid of the packaging box which concerns on embodiment of this invention from the upper left front. It is a figure showing the blank sheet of the packaging box concerning the embodiment of the present invention. It is the figure which showed the packaging box which concerns on embodiment of this invention, and is IV-IV sectional drawing of FIG. It is the figure which showed the packaging box which concerns on embodiment of this invention, and is VV sectional drawing of FIG. FIG. 6 is a cross-sectional view showing a state in which another packaging box is stacked on a body box in the packaging box according to the embodiment of the present invention. It is a perspective view in the state where the upper flap was cut off from the body box in the packaging box concerning the embodiment of the present invention.

An embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front, rear, left and right directions are set for convenience in describing the packaging box of the present embodiment, and do not limit the configuration of the packaging box of the present invention.

  The packaging box 1 of the present embodiment includes a body box 10 and a lid 30 as shown in FIG. A lid 30 is assembled to the body box 10 whose upper surface is open, and the body box 10 and the lid 30 form a rectangular parallelepiped packaging box 1.

As shown in FIG. 3, the body box 10 and the lid 30 are formed by folding a blank sheet S1, S2 obtained by cutting out a cardboard sheet into mountain lines or valleys at each ruled line. The blank sheets S1 and S2 shown in FIG. 3 are arranged so that the outer surface side can be seen.
The body box 10 is formed by the blank sheet S1, and the lid 30 is formed by the blank sheet S2.
Each ruled line (folded line) of the blank sheets S1 and S2 is a linear groove (pressed rule) formed by pressing the surface of the blank sheets S1 and S2. Note that a cut may be formed in the ruled line. This makes it easier to fold the blank sheets S1 and S2 at the ruled line.

  The packaging box 1 of the present embodiment is assumed to accommodate a plurality of plastic bottles in the body box 10 (see FIG. 5), and the weight of the contents is large. The strength of the body box 10 is increased by using double-sided cardboard. In addition, although the blank sheet S2 of the lid 30 of the present embodiment is formed of cardboard of one layer of flute such as A flute and B flute, similarly to the blank sheet S1, cardboard of W flute may be used. .

As shown in FIG. 2, the body box 10 has a square tubular body 11 and a bottom plate 20 that closes a lower opening of the body 11.
The body 11 has a pair of front and rear end walls 12, 12 and a pair of left and right side walls 13, 13. Each of the end wall 12 and the side wall 13 is a rectangular wall.

  A left side wall 13 is connected to a left edge of the front end wall 12 via a ruled line. Further, a right side wall 13 is continuously provided on the right edge of the front end wall 12 via a ruled line. The rear end wall 12 is connected to the rear edge of the left side wall 13 via a ruled line. Further, a strip-shaped joining piece 14 is continuously provided on the rear edge of the right side wall 13 via a ruled line.

  When the joining piece 14 is joined to the inner surface of the rear end wall 12 by an adhesive means such as hot melt while bending the blank sheet S1 (see FIG. 3) at each ruled line, the front and rear end walls 12, 12 and the left and right side walls A square body portion 11 having a rectangular shape is formed by the members 13 and 13. An upper opening 11 a is formed on the upper surface of the body 11.

The bottom plate 20 closes the lower opening of the body 11. The bottom plate 20 includes a pair of front and rear inner flaps 21 and 21 connected to lower edges of the front and rear end walls 12 and 12 and a pair of left and right outer flaps connected to lower edges of the left and right side walls 13 and 13. 22, 22.
Left and right outer flaps 22, 22 are superimposed on the lower surfaces of the front and rear inner flaps 21, 21, and the left and right outer flaps 22, 22 abut. The lower surfaces of the front and rear inner flaps 21 and 21 and the upper surfaces of the left and right outer flaps 22 and 22 are bonded by a bonding means such as hot melt. The bottom plate 20 of the body box 10 has the same configuration as the bottom plate of the A-type cardboard box.

  Side opening portions 15 are formed in the left and right side walls 13, 13, respectively. The side opening 15 is a depression formed in the center of the upper edge of the side wall 13. The side opening 15 of the present embodiment is recessed from the upper edge of the side wall 13 to a height of about ３.

  The side opening 15 is an opening for exposing the side surface of the content to the outside and facilitating the removal of the content from the body box 10 when only the body box 10 is in a state. Therefore, the shape and size of the side opening 15 are appropriately set according to the shape and size of the contents.

  Upper flaps 16 are respectively connected to upper edges of the front and rear end walls 12, 12 via a cutting guide line L. The cutting guide line L is a perforated line in which cuts are formed intermittently. The interval and shape of the cut of the cutting guide line L are not limited.

  The upper flap 16 is formed in a band shape along the upper edge of the end wall 12. The upper flap 16 protrudes inward of the body 11 from the upper edge of the end wall 12. The length of the upper flap 16 in the front-rear direction of the present embodiment is about １ ／ of the length of the side wall 13 in the front-rear direction.

The length of the upper flap 16 in the left-right direction is shorter than the length of the end wall 12 in the left-right direction. The left edge of the upper flap 16 is located on the right side (inside) of the left edge of the end wall 12, and the right edge of the upper flap 16 is located on the left side (inside) of the right edge of the end wall 12. Have been.
As shown in FIG. 3, the interval t between the left edge of the upper flap 16 and the left edge of the end wall 12 and the interval t between the right edge of the upper flap 16 and the right edge of the end wall 12 are described later. The thickness is set to be substantially the same as the thickness of the vertical plate 32 of the lid 30 to be formed. That is, the vertical plate 32 can be inserted into the space t between the upper flap 16 and the side wall 13 (see FIG. 4).

A handle hole 17 is formed in the upper part of the end wall 12, as shown in FIG. The hook hole 17 is an oval through hole having left and right ends formed in a semicircular shape. The handle hole 17 is a portion where a worker's hand is hung when lifting the packaging box 1.
In the state of the blank sheet S1 (see FIG. 3), the inside of the handle hole 17 is closed by the closing plate 17a. The upper edge of the closing plate 17a is connected to the end wall 12 via a ruled line, and the other edge of the closing plate 17a is separated from the end wall 12 by a slit.

The lid 30 includes a top plate 31 and a pair of left and right vertical plates 32, 32 continuously provided on left and right edges of the top plate 31.
The top plate 31 is a rectangular flat plate, and has the same shape as the upper opening 11 a of the body 11. As shown in FIG. 1, when the lid 30 is assembled to the body box 10, the upper opening 11 a of the body 11 is closed by the top plate 31. At this time, the lower surface of the top plate 31 is superimposed on the upper surfaces of the front and rear upper flaps 16, 16 (see FIG. 5).

  At the center of the front and rear edge portions of the top plate 31, a finger hook portion 31a recessed in a semicircular shape is formed. The finger hook 31a is a portion where the operator's finger is hooked when the lid 30 is pulled up with respect to the body box 10. The shape of the finger hook 31a is not limited.

As shown in FIG. 2, a vertical plate 32 is continuously provided on the side edge of the top plate 31 via a ruled line. The vertical plate 32 is a rectangular flat plate, and extends downward from the side edge of the top plate 31. The vertical plate 32 is formed perpendicular to the top plate 31.
The front and rear corners 32a, 32a of the lower end of the vertical plate 32 are inclined so that the width in the front and rear direction becomes narrower downward.

As shown in FIG. 1, when the lid 30 is assembled to the body box 10, the vertical plate 32 enters the body box 10 and is stacked on the inner surface of the side wall 13.
When assembling the lid 30 to the body box 10, the vertical plate 32 is inserted from above into between the inner surface of the side wall 13 and the side edge of the upper flap 16. Thus, when the lid 30 is assembled to the body box 10, the front and rear portions of the upper end of the vertical plate 32 are sandwiched between the inner surface of the side wall 13 and the side edges of the front and rear upper flaps 16, 16. State.

The length of the vertical plate 32 in the front-rear direction is substantially the same as the distance between the front and rear end walls 12 in the front-rear direction. When the lid 30 is assembled to the body box 10, the vertical plate 32 is sandwiched between the front and rear end walls 12,12.
When the lid 30 is assembled to the body box 10, the entire side opening 15 is closed by the vertical plate 32.

The vertical length of the vertical plate 32 is substantially the same as the vertical length of the side wall 13 as shown in FIG. In a state where the top plate 31 is arranged in the upper opening 11 a of the body 11, the lower edge of the vertical plate 32 is configured to contact the upper surface of the inner flap 21 of the bottom plate 20.
Therefore, when the lid 30 is assembled to the body box 10, the lower edges of the left and right vertical plates 32, 32 are in contact with the upper surface of the bottom plate 20, and the top plate 31 is supported by the left and right vertical plates 32, 32. You.

  In the packaging box 1 as described above, the body box 10 and the lid 30 are separately assembled as shown in FIG. Then, as shown in FIG. 5, after the contents are stored in the body box 10, the front and rear upper flaps 16, 16 are overlaid on the upper end of the contents.

  Subsequently, as shown in FIG. 1, the lid 30 is assembled to the body box 10 from above. At this time, the vertical plate 32 of the lid 30 is inserted from above into between the inner surface of the side wall 13 and the side edges of the front and rear upper flaps 16, 16.

As described above, when the cover 30 is attached to the body box 10, the vertical plate 32 is inserted between the side wall 13 and the upper flap 16 so that the vertical plate 32 is positioned inside the body box 10 as shown in FIG. Can be prevented. The front and rear corners 32a of the vertical plate 32 are inclined.
Therefore, when assembling the lid 30 to the body box 10, the lower edge of the vertical plate 32 can be prevented from strongly hitting the contents. Thus, the vertical plate 32 can be smoothly inserted into the body box 10.

When the lid 30 is pressed down on the body box 10 to a position where the lower edges of both the vertical plates 32, 32 of the lid 30 abut on the upper surface of the bottom plate 20 of the body box 10, as shown in FIG. The upper opening 11a of the body box 10 is closed by the top plate 31 of the body 30, and the side opening 15 of the body box 10 is closed by the vertical plate 32 of the lid 30. Thus, the packaging box 1 is assembled in a sealed state.
Further, the lid 30 is fixed to the body box 10 with an adhesive tape (not shown), and the packaging box 1 is transported or stored in this state.

  In the packaging box 1, as shown in FIG. 4, the lower edge of the vertical plate 32 of the lid 30 is in contact with the upper surface of the bottom plate 20. The upper flap 16 is supported by the upper end of the contents, and the upper flap 16 supports the top plate 31 of the lid 30. Therefore, the withstand load of the packaging box 1 can be increased.

When opening the packaging box 1, after peeling off the adhesive tape from the packaging box 1, the lid 30 is lifted and the lid 30 is pulled out from the body box 10. At this time, if a finger is put on the finger hooks 31a, 31a at the front and rear of the top plate 31, the lid 30 is easily pulled up.
By removing the lid 30 from the body box 10, the upper opening 11 a of the body box 10 can be opened and the side opening 15 of the body box 10 can be opened. As a result, the contents can be displayed in a store while the contents are stored in the body box 10.

  As described above, in the packaging box 1 of the present embodiment, since it is not necessary to cut off the top and the wall at the time of opening, even if the strength is increased by using the corrugated cardboard of the W flute, the contents can be easily opened and the contents can be stored at the store. Can be displayed.

  When the lid 30 is removed from the body box 10, the front and rear upper flaps 16, 16 are arranged in the upper opening 11a of the body box 10, and as shown in FIG. The other packaging boxes 1 can be stably stacked.

  When other packaging boxes 1 are not stacked on the packaging box 1, as shown in FIG. 7, the cutting guide line L is cut open and the upper flap 16 is cut out from the body box 10 to thereby open the upper opening 11 a of the body box 10. The whole can be opened. Thereby, it becomes easy to take out the contents from the body box 10.

As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and can be appropriately changed without departing from the gist of the present invention.
In the packaging box 1 of the present embodiment, as shown in FIG. 2, a side opening 15 having a concave shape is formed in the side wall 13, but the shape of the side opening 15 is not limited. A through hole-shaped side opening 15 may be formed.

  In the packaging box 1 of the present embodiment, the upper and lower flaps 16, 16 are connected to the body box 10, but the upper flap 16 may be provided on only one of the front and rear sides. It is not necessary.

  In the packaging box 1 of the present embodiment, the bottom plate 20 of the body box 10 is constituted by the front and rear inner flaps 21 and 21 and the left and right outer flaps 22 and 22, but the configuration of the bottom plate 20 is not limited. For example, the lower opening of the body 11 may be closed by a single bottom plate.

  Although the packaging box 1 of the present embodiment is made of cardboard, the packaging box may be formed of various known paperboards.

DESCRIPTION OF SYMBOLS 1 Packaging box 10 Body box 11 Body 11a Upper side opening 12 End wall 13 Side wall 14 Joining piece 15 Side opening 16 Upper flap 17 Handle hole 17a Closure plate 20 Bottom plate 21 Inner flap 22 Outer flap 30 Lid 31 Top plate 31a Finger hook Part 32 Vertical plate 32a Corner L Cutting guide wire S1 Blank sheet S2 Blank sheet

Claims (4)

With a body box and a lid,
The body box is
A cylindrical body having front and rear end walls and left and right side walls,
And a bottom plate closing the lower opening of the trunk,
A side opening is formed in the side wall,
The lid,
A top plate closing the upper opening of the trunk,
A vertical plate continuously provided with the top plate and stacked on the inner surface of the side wall,
The side opening is closed by the vertical plate,
A packaging box, wherein a lower edge of the vertical plate is in contact with an upper surface of the bottom plate. The packaging box according to claim 1,
An upper flap is connected to an upper edge of the end wall,
A packaging box, wherein a lower surface of the top plate is overlapped with an upper surface of the upper flap. The packaging box according to claim 2, wherein
The packaging box, wherein the upper flap is connected to an upper edge of the end wall via a cutting guide line. A packaging box according to claim 2 or claim 3,
A packaging box, wherein an upper end of the vertical plate of the lid is sandwiched between an inner surface of the side wall and a side edge of the upper flap.

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