JP2006082859A - Packaging box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a lid part to be prevented from being opened at a packaging box used during transportation of goods when either vibration or shock is applied to the box. <P>SOLUTION: In a packaging box 1, each of short side lid flaps 23 is formed with a bent piece 24, and each of long side lid flaps 13 is formed with an insertion hole 14. The bent piece 24 is constituted to enable a part of the short side lid flap 23 to be folded at a folding line, and has a main body part 24a positioned at a root side of the bent piece 24 and wing segments 24c positioned at both sides of the main body part 24a. The insertion hole 14 has a longer length along a width direction of the bent piece 24 under an overlapped state of adjoining two lid side flaps than a width of the main body part 24a and has a shorter length than the length where a width of the wing segments 24c and a width of the main body part 24a are added to each other. Accordingly, it is possible to prevent the lid from being opened during transportation of the packaging box 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging box used when conveying an article.

  Conventionally, as this type of packaging box, there are four bottom side flaps and four lid side flaps connected to the side wall of the box, and the bottom and the lid are formed by folding these flaps. Widely known.

  In such a packaging box, the bottoms are formed by bending the bottom side flaps and fixing the bottom side flaps to each other using a stapler, an adhesive tape or the like in this state. And after filling the contents of this packaging box, a lid part is formed by bending each lid part side flap.

  Here, in the lid part of this packaging box, what can form a lid part without using a stapler, an adhesive tape, etc. is known in order to prevent foreign matter mixing into the inside of the packaging box ( For example, see Patent Document 1).

That is, this packaging box is formed with insertion holes through which the corners of the adjacent flaps can be inserted in the lid side flaps facing each other. The flaps are inserted through the corners of the flaps adjacent to the insertion holes. By engaging, the lid portion is configured to be fixed.
Utility Model Registration No. 3090618

  However, when an article is conveyed using the packaging box, the engagement state between the flaps may be released due to vibration or impact applied to the packaging box during conveyance, and the lid may be opened.

If the lid portion is completely opened in this way, the rigidity as a box is reduced, so that it becomes unstable when transported, and there is a risk of collapse of the cargo.
Therefore, in view of such problems, it is an object of the present invention to provide a packaging box used for transporting articles so that the lid can be prevented from opening when a vibration or impact is applied to the box. It is an object of the invention.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a rectangular bottom portion, four side wall portions erected around the bottom portion, and an upper end portion of each side wall portion are connected to each other. A lid portion side flap that is bent inward to form a lid portion, and of the two lid portion side flaps, the two adjacent lid portion side flaps include A meshing portion that meshes with each other is formed in a state where the two lid-side flaps are overlapped, and is formed in a lid-side flap that is positioned on the lower side when the two adjacent lid-side flaps are overlapped The engaged portion is formed of a bent piece configured to be able to be bent with respect to the flap main body by cutting out a part of the lid side flap, and the bent piece is formed on the base side of the bent piece. A narrow portion that is positioned, and closer to the tip side of the bent piece than the narrow portion A wide portion that is set wider than the width of the narrow portion, and the lid portion side flap positioned on the upper side in the state where the two adjacent lid portion side flaps are overlapped with each other. The formed meshing portion includes an insertion hole for inserting the bent piece, and the insertion hole extends along the width direction of the bent piece in a state where the two adjacent flaps on the lid side are overlapped. The length is set to be longer than the width of the narrow portion and shorter than the width of the wide portion.

  That is, in this packaging box, in the state where the meshing portions are meshed with each other, the width of the wide portion of the bent piece is configured to be wider than the length of the insertion hole. Even when is added, this wide portion is caught in the insertion hole.

Therefore, according to such a packaging box, it can prevent that a cover part opens during conveyance of this packaging box.
By the way, when forming a cover part after filling a packaging box with a large amount of contents, it is necessary to make a meshing part mesh in a state where the cover part side flap is raised. Therefore, in the packaging box according to claim 1, the meshing portion is connected to the lid portion side flap positioned on the upper side and the side wall portion to which the lid portion side flap is connected, as described in claim 2. It is preferable that it is arrange | positioned in the part vicinity.

  According to such a packaging box, even if the position of a certain lid portion side flap changes, the change in the distance between the lid portion side flaps can be reduced, so that the lid portion side flap is raised. Even in the case, the meshing portion can be meshed well.

  Moreover, in the packaging box of Claim 1 or Claim 2, although the meshing part should just be arrange | positioned in one place, a cover part bends a pair of cover part side flaps which mutually oppose, and opposes each other. In the case where the other set of lid side flaps is formed by overlapping and folding on the already folded lid side flaps, the meshing portion is adjacent to the lid side as described in claim 3. It is desirable that the flaps be arranged at the locations where the flaps overlap each other.

According to such a packaging box, since the meshing portions are arranged in at least four places, all the lid portion side flaps can be meshed with each other. Therefore, the rigidity of the packaging box can be improved.
Furthermore, in the packaging box according to any one of claims 1 to 3, as described in claim 4, the bent piece is formed with an insertion hole in the lid portion side flap located on the lower side. It is preferable that the insertion hole is formed across the lid portion side flap located on the upper side and the side wall portion connected to the flap.

According to such a packaging box, when the person who assembles this packaging box puts a finger into the insertion hole, the folding piece can be easily touched, so that the assembly of the packaging box can be facilitated.
Moreover, in the packaging box in any one of Claims 1-4, as for the bending piece, the length from the flap main body of a narrow part to a wide part is on the upper side as described in Claim 5. It is preferable that the length is set to be equal to or greater than the thickness of the lid-side flap located.

  According to such a packaging box, since the meshing state of the lid side flap formed with the meshing part can be loosened, the amount of the contents of the packaging box is large, and the lid part is lifted by the contents. Even if it exists, it can mesh | engage a cover part side flap favorably. Moreover, since the meshing part meshes, the rigidity as a box can be maintained high.

Furthermore, in the packaging box in any one of Claims 1-5, the wide part of a bending piece is equipped with the folding line on the extended line of the outer edge of a narrow part, as described in Claim 6. It is desirable.
According to such a packaging box, by bending the wide portion of the bent piece along the fold line, the width of the wide portion becomes narrower than the length of the insertion hole, so the wide portion can be easily inserted into the insertion hole. be able to. For this reason, a packaging box can be assembled easily.

Moreover, in the packaging box in any one of Claims 1-6, it is preferable that the drain part is formed in the bottom part like Claim 7.
According to such a packaging box, even when contents such as vegetables and fruits that may cause water droplets are stored in this packaging box, water droplets from these contents should be discharged well. Can do.

  Furthermore, in the packaging box in any one of Claims 1-7, it comprises four bottom side flaps respectively connected with the lower end part of each side wall part as described in Claim 8, Is preferably formed by bending each bottom side flap to the opposite side wall side.

According to such a packaging box, since at least a part of the bottom can be made into a multiple structure by the plurality of bottom side flaps, the strength of the bottom can be improved.
In addition, in the packaging box according to claim 8, when the packaging box is assembled from one sheet material cut into a predetermined shape, four side walls as described in claim 9 are used. The parts are desirably connected linearly in the sheet material.

  According to such a packaging box, since the lid portion side flap is disposed on one side of each of the connected side wall portions and the bottom plate side flap is disposed on the other side, the shape of the sheet material is made substantially rectangular. Can do. For this reason, a sheet material can be used efficiently and the usage-amount of a sheet material can be minimized.

Moreover, in the packaging box in any one of Claims 1-9, it is preferable to be comprised from the corrugated cardboard as described in Claim 10.
According to such a packaging box, strength and processability can be maintained in a balanced manner.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a development view showing a packaging box 1 to which the present invention is applied.
The packaging box 1 is assembled by bending a single sheet material 2 made of cardboard along a predetermined folding line.

  As shown in FIG. 1, the sheet material 2 includes two long side walls 11, two short side walls 21, and a long side bottom side connected to the long side walls 11. The flap 12 and the long side lid part side flap 13 (corresponding to the lid part side flap located on the upper side in the present invention), the short side bottom part side flap 22 connected to each short side wall part 21 and the short side lid part Side flaps 23 (corresponding to lid side flaps positioned on the lower side in the present invention).

In the sheet material 2, the long side wall portions 11 and the short side wall portions 21 are alternately connected in a straight line.
Further, the sheet material 2 includes a connection member 5 for connecting the long side wall portion 11 and the short side wall portion 21 located at the end of the sheet material 2. The connecting member 5 includes a wall surface connecting portion 5 a and a flap connecting portion 5 b, and the wall surface connecting portion 5 a is connected to the long side wall portion 11 located at the end of the sheet material 2.

Each long side lid portion side flap 13 includes two insertion holes 14 in the vicinity of the connection side with the long side wall portion 11 for inserting a bent piece 24 described later.
The insertion hole 14 can be opened and closed by being bent from a folding line, a holding portion 14a that holds the inserted bent piece 24, a cutout portion 14b that is notched to facilitate insertion of the bent piece 24, and the like. The door part 14c is provided.

Here, the notch portion 14 b is formed across the long side lid portion side flap 13 and the long side side wall portion 11.
Moreover, the door part 14c is arrange | positioned in the vicinity of the connection side of the long side cover part side flap 13 and the long side side wall part 11, and the area | region of this connection piece side is notched. That is, the door portion 14c is cut out so as to have a substantially trapezoidal shape, and the side that becomes a fold line for opening and closing the door portion 14c is the side of the lower bottom side of the trapezoidal shape (of the parallel sides) Long side). Since the door portion 14c is cut into a substantially trapezoidal shape, the shape of the cutout portion 14b is such that a region in the vicinity of the connection side between the long side lid portion side flap 13 and the long side wall portion 11 is wide open. It has become.

Next, the long side bottom portion side flap 12 includes a drain hole 16 and a handle portion 17.
The drain hole 16 is formed, for example, in order to eliminate the water droplets when the packaging box 1 is filled with contents containing a lot of moisture such as vegetables and fruits and water drops come out from the contents. Yes.

  The handle portion 17 is used by a person who disassembles the packaging box 1 to insert his / her hand when the lid portion of the assembled packaging box 1 is disassembled. Since the handle portion 17 is formed, a hand can be easily caught on the lid portion, so that a person who disassembles the packaging box 1 can easily disassemble the packaging box 1.

The short side lid part side flap 23 is provided with two bent pieces 24 (corresponding to the engagement part referred to in the present invention together with the insertion hole 14) that can be inserted into the insertion hole 14 described above.
The bent piece 24 is formed by making a cut from the side of the short side lid portion side flap 23 located on the extension line of the connecting portion between the side wall portions 11 and 21. Moreover, the main body part 24a which can be bend | folded with the fold line (bending part) located in the root of this bending piece 24, and the blade | wing part 24c connected to the both ends of this main body part 24a are provided.

The blade portion 24c is configured to be bendable with a connection side to the main body portion 24a as a fold line.
Here, the width of the main body portion 24a is set narrower than the width of the holding portion 14a of the insertion hole 14 (corresponding to the narrow portion in the present invention), and the main body portion 24a and the two blade portions 24c are connected. The combined width (corresponding to the wide portion in the present invention) is set wider than the width of the holding portion 14 a of the insertion hole 14. With this configuration, once the bent piece 24 is inserted through the insertion hole 14, the bent piece 24 is difficult to come off.

  Further, the length from the folding line for folding the main body portion 14a of the bent piece 24 from the short side lid portion side flap 23 to the blade portion 24c (that is, the length of the portion narrower than the width of the insertion hole 14 in the bent piece 24). Is set to about twice the thickness of the sheet material 2 (specifically, the thickness of the long side lid portion side flap).

  Next, the short side bottom flap 22 includes a drain hole 26. The drain hole 26 is formed at a position overlapping the drain hole 16 formed in the long side bottom flap 12 when the packaging box 1 is assembled.

  Each long side wall 11 and each short side wall 21 are provided with vent holes 15 and 25. These vent holes 15 and 25 are formed in order to improve the air permeability inside the packaging box 1.

  Note that the vent holes 15 formed in the long side wall 11 are disposed at two locations at a predetermined interval in the vicinity of the center of the long side wall 11. In addition, the air holes 25 formed in the short side wall 21 are disposed at one place slightly above the center of the short side wall 21. The vent hole 25 formed in the short side wall portion 21 is also used as a handle when the packaging box 1 is conveyed.

  Next, the procedure for assembling the packaging box 1 from the sheet material 2 will be described with reference to FIGS. 2 is a perspective view showing a state in which the wall surface and bottom of the packaging box 1 are assembled, FIG. 3 is an explanatory view showing a state when the bent piece 24 is inserted into the insertion hole 14, and FIG. 4 is a region shown in FIG. FIG. 5 is a perspective view showing a state in which the long side lid part side flap 13 and the short side lid part side flap 23 on one side are fixed, and FIG. 6 is a completed view of the packaging box 1. FIG.

The packaging box 1 is assembled by the following procedure from the sheet material 2 shown in FIG.
First, in the sheet material 2, the side walls 11, 21 are bent at a right angle with the boundary line of the side walls 11, 21 as a fold line. And an adhesive agent is apply | coated to the connection member 5, and this connection member 5 and the short side wall part 21 located in the edge part of the sheet | seat material 2 are adhere | attached through an adhesive agent.

  At this time, the wall surface portion connecting portion 5a is bonded to the short side wall portion 21, the flap connecting portion 5b is bonded to the short side lid portion side flap 23, and the other is connected to the short side bottom portion side flap 22. Glued.

  In this state, the lid side flaps 13 and 22 are folded by, for example, a stapler in a state where the short side bottom side flap 22 and the long side lid side flap 13 are overlapped in order in this packaging box. Connect to each other.

  When the procedure so far is completed, the packaging box 1 is in a state as shown in FIG. That is, the bottom portion of the packaging box 1 is assembled, and the lid portion side flaps 13 and 23 are in a state of being erected in parallel with the side wall portions 11 and 21.

Normally, in this state, an operation for packing the contents into the packaging box 1 is performed.
Then, from the state shown in FIG. 2, each short side lid part side flap 23 is folded inside the packaging box 1 at a right angle to the short side wall part 21 and overlapped on the folded short side lid part side flap 23. Then, the one long side lid portion side flap 13 is folded.

Further, from this state, the bent piece 24 formed in the short side lid portion side flap 23 is pulled up from the insertion hole 14 formed in the long side lid portion side flap 13.
When one bent piece 24 is pulled up halfway, the state shown in FIG. 3 is obtained.

  At this time, a person who assembles the packaging box 1 easily inserts the bent piece 24 into the cutout portion 14b of the bent piece 24 and hooks the finger on the main body portion 24a of the bent piece 24. Can be raised.

  Here, when the bent piece 24 is pulled up, as shown in FIG. 4, the blade portions 24 c formed on both sides of the main body portion 24 a come into contact with the door portion 14 c of the insertion hole 14, thereby It will be in the state bent inward. Further, the door portion 14 c of the insertion hole 14 is in a state of being spread outwardly from the packaging box 1 by contacting the bent piece 24. Thus, since the insertion hole 14 is configured so that the door portion 14c can be opened and closed, the bent piece 24 can move smoothly while opening the door portion 14c. In particular, the door portion 14c of the packaging box 1 has a substantially trapezoidal shape in which a part on the long side wall portion 11 side is cut out, so that the bent piece 24 is hardly caught by the door portion 14c. For this reason, a person who assembles the packaging box 1 can insert the bent piece 24 into the insertion hole 14 without applying an extra force.

  Next, when the bent piece 24 is further pulled up above the packaging box 1, the state shown in FIG. That is, the blade portion 24 c of the bent piece 24 passes through the insertion hole 14 and is supported by the holding portion 14 a of the insertion hole 14. At this time, the main body portion 24a and the blade portion 24c of the bent piece 24 are located on substantially the same plane, and the lower end portion of the blade portion 24c is in a state of being wider than the width of the insertion hole 14, and the long side It is in the state which contacts the lid part side flap 13. For this reason, the bent piece 24 does not come out of the insertion hole 14.

  Further, the bent piece 24 fixes the short side lid portion side flap 23 and the long side lid portion side flap 13 by being pulled up to the outside (upward in FIG. 3) of the packaging box 1. That is, when the bent piece 24 and the insertion hole 14 are engaged, the bent piece 24 is moved to the opposite side to the direction in which the contents are located. For this reason, according to this packaging box 1, even if it is in the state packed with many contents, the contents are not damaged by the bending piece 24. FIG.

  Next, from the state shown in FIG. 5, the long side lid portion side flap 13 on the opposite side is similarly overlapped with the already folded folded short side lid portion side flap 23. In this state, the bent piece 24 is inserted into the insertion hole 14 formed in the long side lid portion side flap 13.

Then, as shown in FIG. 6, the packaging box 1 is completed.
Here, when a cover part is assembled in a state where large contents or many contents are put in the packaging box 1, the packaging box 1 is in a state as shown in FIG. FIG. 7 is a perspective view showing a state in which the contents of the packaging box 1 are large.

  When there are many contents of the packaging box 1, as shown in FIG. 7, each lid part side flaps 13 and 23 of the packaging box 1 push up the center part of a lid part, and each lid part side flap is inclined. It will be in the state.

  At this time, the blade portion 24 c of the bent piece 24 is bent along the inclination of the long side lid portion side flap 13. For this reason, an excessive load is not applied to the entire bent piece 24, and the bent piece 24 is prevented from being damaged. In the state where the blade portion 24c is bent, the bent piece 24 is supported by the holding portion 14a of the insertion hole 14, and the blade portion 24c of the bent side 24 is locked by the door portion 14c. Therefore, even in this state, the bent piece 24 does not come out of the insertion hole 14.

As described in detail above, in the packaging box 1, the bent piece 24 is formed in each short side lid portion side flap 23, and the insertion hole 14 is formed in each long side lid portion side flap 13.
The bent piece 24 is configured to be able to bend a part of the short side lid portion side flap 23 along a fold line, and is positioned on both sides of the main body portion 24a supported from the root of the bent piece 24 and the main body portion 24a. And a blade portion 24c.

  In the insertion hole 14, the length along the width direction of the bent piece 24 in a state where two adjacent lid portion side flaps are overlapped is longer than the width of the main body portion 24 a, and the width of the blade portion 24 c and the main body The length is set shorter than the total length of the portion 24a.

  Therefore, according to this packaging box 1, in the state where the insertion hole 14 and the bent piece 24 are engaged with each other, the width of the blade portion 24c of the bent piece 24 is configured wider than the length of the insertion hole 14, Since this blade | wing part 24c is hooked in the insertion hole 14, it can prevent that a cover part opens during conveyance of this packaging box 1. FIG.

In addition, the bent piece 24 and the insertion hole 14 can be engaged with each other without damaging the contents.
Moreover, the packaging box 1 is arrange | positioned in the connection part vicinity of the long side side wall part 11 with which the long side cover part side flap 13 and this long side cover part side flap 13 were connected.

  Therefore, according to this packaging box 1, even if the position of a certain lid side flap 13 or 23 is changed, the change in the distance between the lid side flaps 13 and 23 can be reduced. Even when the lid-side flaps 13 and 23 are raised, the insertion hole 14 and the bent piece 24 can be satisfactorily engaged with each other.

  Further, in the packaging box 1, the lid portion is a lid in which a pair of lid portion side flaps 13 or 23 facing each other is folded and another set of lid portion side flaps 23 or 13 facing each other is already folded. The insertion hole 14 and the bent piece 24 are formed at the locations where the long side lid portion side flap 13 and the short side lid portion side flap 23 overlap, respectively. Has been placed.

Therefore, according to this packaging box 1, all the lid part side flaps 13 and 23 can be meshed | engaged. For this reason, the rigidity of the packaging box 1 can be improved.
Further, the bent piece 24 is formed by making a cut in the short side lid part side flap 23 from the side of the flap (long side lid part side flap 13) side where the insertion hole 14 is formed. Are arranged across the long side lid part side flap 13 and the long side side wall part 11 to which the long side lid part side flap 13 is connected.

  Therefore, according to this packaging box 1, when the person who assembles this packaging box 1 puts a finger in the insertion hole 14, it can make it easy to touch the bending piece 24, Therefore Assembling of the packaging box 1 is easy. can do.

  Further, the bent piece 24 has a length from the folding line at which the main body portion 24a is bent to the blade portion 24c (the length from the short side lid portion side flap 23 main body to the blade portion 24c of the main body portion 24a). The length is set to be equal to or greater than the thickness of the portion side flap 13.

  Therefore, according to this packaging box 1, since the engagement state of each lid part side flaps 13 and 23 can be loosened, the amount of the contents of the packaging box 1 is large, and the lid part is lifted by the contents. Even if it exists, the cover part side flaps 13 and 23 can be meshed | engaged favorably. Moreover, since the insertion hole 14 and the bending piece 24 are meshing, it can maintain in the state where the rigidity as a box is high.

Further, in the bent piece 24, the fold line formed between the blade portion 24 c and the main body portion 24 a is located on an extension line along the outer edge of the portion where the width of the bent piece 24 is narrowed.
Therefore, according to the packaging box 1, the bent piece 24 is bent along the fold line formed between the blade portion 24 c and the main body portion 24 a, so that the width of the bent piece 24 is the length of the insertion hole 14. Therefore, the blade portion 24c can be easily inserted into the insertion hole 14. For this reason, the packaging box 1 can be assembled easily.

  Moreover, the bottom part side flaps 12 and 22 are connected with the lower end part of each side wall part 11 and 21, respectively, and the bottom part bends each bottom part side flap 12 and 22 to the side wall part 11 and 21 side which opposes. It is formed by. And each of these bottom part side flaps 12 and 22 is formed with a drain hole.

Therefore, according to the packaging box 1, at least a part of the bottom portion can be formed into a multiple structure by the plurality of bottom side flaps 12 and 22, so that the strength of the bottom portion can be improved.
Further, even when the packaging box 1 stores contents that may cause water droplets such as vegetables and fruits, the water droplets from these contents can be discharged well.

Further, the packaging box 1 is assembled from one sheet material cut into a predetermined shape, and the four side wall portions are linearly connected to each other in the sheet material 2.
Therefore, according to this packaging box 1, since the lid part side flaps 13 and 23 are arrange | positioned at one side of each side wall part 11 and 21 connected, the baseplate side flaps 12 and 22 are arrange | positioned at the other side, respectively. The shape of the sheet material 2 can be made substantially rectangular. For this reason, the sheet material 2 can be used efficiently, and the usage amount of the sheet material 2 can be minimized.

Moreover, since the sheet | seat material 2 is comprised from the corrugated board, intensity | strength and workability can be maintained with good balance.
The embodiment of the present invention is not limited to the above-described embodiment, and can take various forms as long as it belongs to the technical scope of the present invention.

For example, in the present embodiment, the insertion hole 14 and the bent piece 24 are arranged at four locations so as to mesh the lid portion side flaps 13 and 23, but it is only necessary to be arranged at least at one location.
Moreover, although the length from the folding line for bending the main-body part 14a of the bending piece 24 to the blade | wing part 24c was set to about 2 times the thickness of the sheet | seat material 2, it should just be 1 time or more. In this way, even if the length from the folding line for folding the main body portion 14a of the bent piece 24 to the blade portion 24c is in the range of 1 to 2 times, even if the lid is raised Thus, the lid can be formed satisfactorily, and the opening of the lid can be prevented from becoming extremely large.

  Further, in the present embodiment, the bottom of the packaging box 1 is configured by combining four bottom side flaps 12 and 22, for example, one sheet connected to any one of the side wall parts 11 and 21. You may be comprised from the baseplate.

  Moreover, although the sheet | seat material 2 in this embodiment was comprised from the corrugated cardboard, even if it is a cardboard, an aluminum board etc., for example, as long as it can assemble | assemble, what kind of material may be used.

FIG. 2 is a development view showing a packaging box 1. It is a perspective view which shows the state which assembled the wall surface part and bottom part of the packaging box. It is explanatory drawing which shows a mode at the time of inserting the bending piece 24 in the insertion hole 14. FIG. It is an enlarged view of the area | region A shown in FIG. It is a perspective view which shows the state which fixed the long side cover part side flap 13 and the short side cover part side flap 23 of the one side. 2 is a completed drawing of the packaging box 1. FIG. It is a perspective view which shows the state with many contents of the packaging box.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Packaging box, 2 ... Sheet material, 5 ... Connection member, 5a ... Wall surface connection part, 5b ... Flap connection part, 11 ... Long side side wall part, 12 ... Long side bottom side flap, 13 ... Long side cover part Side flap, 14 ... insertion hole, 14a ... holding part, 14a ... main body part, 14b ... notch part, 14c ... door part, 15 ... vent hole, 16 ... drain hole, 21 ... short side wall part, 22 ... short Side bottom part side flap, 23 ... short side cover part side flap, 24 ... bent piece, 24a ... main body part, 24c ... blade part, 25 ... vent hole, 26 ... drainage hole.

Claims (10)

The bottom of the rectangle;
Four side wall portions erected around the bottom portion;
A lid part side flap that is connected to the upper end part of each side wall part and is bent inward to form a lid part;
A packaging box comprising:
Among the lid part side flaps, adjacent two lid part side flaps are formed with meshing parts that mesh with each other in a state where the two lid part side flaps are overlapped,
The meshing part formed on the lid part side flap located on the lower side in the state where the two adjacent lid part side flaps are overlapped with each other by cutting out a part of the lid part side flap to the flap main body. Consists of bent pieces that can be bent
The bent piece is
A narrow portion located on the root side of the bent piece;
A wider portion that is located on the distal end side of the bent piece than the narrow portion, and is set wider than the width of the narrow portion;
Have
The engagement portion formed on the lid portion side flap located on the upper side in the state where the two adjacent lid portion side flaps are overlapped includes an insertion hole for inserting the bent piece,
The insertion hole has a length along the width direction of the bent piece in a state in which the two adjacent lid portion side flaps are overlapped with each other, which is longer than the width of the narrow portion and larger than the width of the wide portion. A packaging box characterized by a short length.   2. The packaging box according to claim 1, wherein the meshing portion is disposed in the vicinity of a connecting portion between a lid portion side flap positioned on the upper side and a side wall portion connected to the lid portion side flap. . The lid portion is configured by bending a pair of lid portion side flaps facing each other and folding another set of lid portion side flaps facing each other on the already folded lid portion side flaps,
The packaging box according to claim 1 or 2, wherein the meshing portions are respectively arranged at locations where adjacent lid side flaps overlap each other. The bent piece is formed by making a cut from the side of the flap where the insertion hole is formed in the lid portion side flap located on the lower side,
The said insertion hole is arrange | positioned ranging over the lid part side flap located in the said upper side, and the side wall part to which this flap was connected, The Claim 1 characterized by the above-mentioned. Packaging box.   The length from the flap main body of the said narrow part to the wide part is set to the length more than the thickness of the cover part side flap located in the said upper side, The said bending piece is characterized by the above-mentioned. The packaging box according to claim 4.   The packaging box according to any one of claims 1 to 5, wherein the wide portion of the bent piece includes a fold line on an extension line of an outer edge of the narrow portion.   The packaging box according to any one of claims 1 to 6, wherein a drainage hole is formed in the bottom portion. Comprising four bottom side flaps connected to the lower end of each side wall,
The packaging box according to any one of claims 1 to 7, wherein the bottom part is formed by bending the bottom part side flaps to the opposing side wall part side. The packaging box is assembled from one sheet material cut into a predetermined shape,
The packaging box according to claim 8, wherein the four side wall portions are linearly connected to each other in the sheet material.   The said packaging box is comprised from the corrugated cardboard, The packaging box in any one of Claims 1-9 characterized by the above-mentioned.

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