WO2014109133A1

WO2014109133A1 - Packing box

Info

Publication number: WO2014109133A1
Application number: PCT/JP2013/081197
Authority: WO
Inventors: 宣之熊澤
Original assignee: 株式会社エルティ流通センター
Priority date: 2013-01-10
Filing date: 2013-11-19
Publication date: 2014-07-17
Also published as: JP2014148309A; JP5420089B1

Abstract

The present invention implements a packing box which can be closed without gluing and the like and opened by hand. A blank (2) which forms a packing box (1) comprises a bottom sheet part (10), a front sheet part (20), a front top sheet part (30), a back sheet part (40), a back top sheet part (35), a right side sheet part (50), and a left side sheet part (55), the right side sheet part (50) has right front and back inner locking flaps (51, 52), the left side sheet part (55) has left front and back inner locking flaps (56, 57), when the right and left side sheet parts (50, 55) are folded with respect to the bottom sheet part (10), the right and left front and back inner locking flaps (51, 52, 56, 57) are folded, and locking parts (51r, 52r, 56r, 57r) thereof are locked, a box body (3) with a part above the bottom sheet part (10) thereof open is formed, further the opening of the box body (3) is closed by folding the front sheet part (20) and the front top sheet part (30) after folding the back sheet part (40) and the back top sheet part (35), the packing box (1) can be closed by a closing means, and tear lines (21, 22) for opening the closed packing box (1) are formed in the front sheet part (20).

Description

Packing box

The present invention can form a packing box and close the lid without adhering the blank with glue or sticking with tape or the like, and can close the packing box by hand without using a tool. The present invention relates to a packaging box that can be (unpacked) and preferably can be reused as a packaging box.

A packaging box for storing various articles, for example, a packaging box for delivery or storage, is obtained by folding one blank having four side portions, a top surface, and a bottom plate according to a crease line. Is generally. In such a packaging box, adjacent plate portions are adhered with glue or the like or attached with tape to form a packaging box (Patent Documents 1 to 6).

In these packing boxes, the top or side plate part that serves as the lid is closed with glue or the like, or attached with tape, and the opening is applied to one or both of the top and side of the packing box. There are those performed by tearing the perforation formed in (Patent Documents 3 and 4). In addition, there is a type in which the plate portions positioned on the top surface and the bottom surface are closed with tape or the like, and the tape is peeled off when opened (Patent Document 5).

However, each packaging box described above cannot form a packaging box unless it is glued or affixed with tape when accommodating the article. In addition, the packaging box is required to be securely closed and the contents cannot be seen from the outside, and must be glued or taped to close the gaps formed at the boundaries of each surface. There is also. Therefore, in the mail-order sales industry, there is a problem that the cost increases due to the occurrence of gluing at the time of assembling the packaging box or the tape sticking work and the material cost such as glue.

Further, in a packaging box in which the opening of the box formed by gluing is closed with two upper lids, those having two upper lids with the opposite sides of the opening as folds are used to insert the locking pieces into the slits. It is necessary to fold the upper lid and further fold the locking piece (Patent Document 6). Then, since the bent locking piece interferes with the contents, it is not easy to close. In order to avoid this interference, it is necessary to reduce the amount of items to be accommodated or to enlarge the packaging box, which increases the transportation cost.

The packing box that is glued or taped must be peeled off at the time of opening, and requires a tool such as a cutter knife and is not easy to open. Furthermore, when recycling the tape, it may be necessary to remove the tape from the dismantled packaging box, and there are problems that the opening operation is complicated and the operation cost is increased. Even in a packaging box that tears a perforation that is easy to open, the processing of tape in recycling causes the same problem. Each of the above problems is the same even when the packaging box is used for article storage or the like. In mail order sales or the like, returned goods such as merchandise rarely occur, so it is desirable that the returned merchandise can be repackaged in an opened packing box.

JP 2010-095262 A JP 2008-074458 A Japanese Patent No. 4852920 Japanese Patent No. 4938402 JP 2004-168354 A Utility model registration No.31278804

Therefore, the present invention realizes a packaging box that can be securely closed without gluing or sticking tape, and can be opened by hand without using tools such as a cutter knife when opening, and can be recycled. The packaging box can be easily disassembled, separation of tape, etc. is unnecessary, there are few gaps when the blank is folded, and it is preferable to realize a packaging box that can be reused as a packaging box. It was an issue.

In order to solve the above-mentioned problems, a packaging box according to the present invention includes a blank for forming the packaging box, a bottom plate part, a front plate part connected to the front of the bottom plate part, a front plate part, and a rear part of the bottom plate part. The rear plate portion, the rear top plate portion, the right side plate portion connected to the right side of the bottom plate portion, and the left side plate portion connected to the left side of the bottom plate portion.

The right side plate portion has a front right inner locking flap connected to the front side and a rear right inner locking flap connected to the rear side, and the left side plate portion also has a front left inner locking flap connected to the front side and the rear side. And a left rear inner locking flap connected to the. The right front inner locking flap, the right rear inner locking flap, the left front inner locking flap, and the left rear inner locking flap are each formed with a locking portion.

The blank bends the right side plate and left side plate in the same direction with respect to the bottom plate, and bends the front right inner locking flap and the left front inner locking flap to lock the right front inner locking flap and the left front inner locking. The locking part of the flap can be locked. Similarly, the right rear inner locking flap and the left rear inner locking flap can be folded to lock the locking portion of the right rear inner locking flap and the locking portion of the left rear inner locking flap.

When the locking portion of the right front inner locking flap, the left front inner locking flap, the right rear inner locking flap and the left rear inner locking flap is locked as described above, the right side plate portion and The left side plate part is positioned by being bent substantially vertically, the right front inner locking flap and the left front inner locking flap are positioned substantially in contact with the front side part of the bottom plate part, and the right rear inner locking flap and the left rear inner side are positioned. The locking flap is positioned substantially in contact with the rear side portion of the bottom plate portion. In this way, the blank can form a box body having the bottom plate portion as a bottom portion and an upper portion thereof opened.

Furthermore, the rear plate portion is bent substantially perpendicularly to the bottom plate portion so that the rear plate portion, the right rear inner locking flap and the left rear inner locking flap are in contact with each other, and the rear top plate portion has a relative to the rear plate portion. The rear top plate portion and the top plate flap are bent so that the top plate flap extended to the side to be positioned is positioned near or substantially in contact with the right front inner locking flap and the left front inner locking flap. If it does so, substantially the whole area | region of opening of a box can be block | closed with a back top plate part (Claim 1).

Alternatively, the rear plate portion is bent substantially perpendicularly to the bottom plate portion so that the rear plate portion is in contact with the right rear inner locking flap and the left rear inner locking flap, and the rear top plate portion is bent to at least the opening of the box. A part of the region can be closed (Claim 2).

Further, the front plate portion is bent substantially perpendicularly to the bottom plate portion so that the front plate portion, the right front inner locking flap and the left front inner locking flap are in contact with each other, and the front top plate portion is bent to cover the rear top plate portion. The packaging box can be closed by locking the front top plate portion to the rear top plate portion by the closing means (claims 1 and 2). Here, the closing means includes, for example, a closing claw formed at the front end portion of the front top plate portion, a cutout portion formed in the closing claw, a closing slit formed in the rear top plate portion, and a tongue portion formed in the closing slit. When the closing claw is inserted and locked into the closing slit, the tongue portion is locked to the cutout portion (claims 1 and 2).

In the blank, a tear line is formed at least on the front plate. By tearing the tear line by hand, the front plate portion interposed between the bottom plate portion and the front top plate portion can be separated into a portion connected to the front top plate portion and a portion connected to the bottom plate portion, The packaging box can be opened (claims 1 and 2).

By the way, in the opened packaging box, the right and left front inner locking flaps are locked to each other at the front side of the bottom plate. By positioning the top plate flap in the vicinity of these right and left front inner locking flaps, the entire top of the opened opening of the packaging box can be covered with the rear top plate portion, and the packaging box can be closed again. ).

However, since the front top plate portion is separated into a portion connected to the front top plate portion and a portion connected to the bottom plate portion, it is necessary to close the packaging box with a tape or the like. Such re-use of the packaging box is performed in the case of returning the article, and there is no problem in material costs and work costs such as tape attaching work.

That is, the packaging box can be easily assembled by simply folding the blank (without attaching or gluing the tape), and can be opened by hand without using a tool such as a cutter. Also, the right and left front inner locking flaps and the front plate overlap, and the right and left rear inner locking flaps and the rear plate overlap, so the bottom plate, front plate, rear plate, right plate, and left plate It is possible to prevent gaps and breaks from occurring at the boundary with the portion (claims 1 and 2). Moreover, the packaging box can be reused as a packaging box after opening (Claim 1).

Furthermore, the closing claw has a nail body portion and a connecting portion interposed between the nail body portion and the front top plate portion, and the nail body portion is closer to the connecting portion than the width of the closing slit formed in the rear top plate portion. While having a slightly wider maximum width portion, the width of the nail body portion may narrow toward the toe portion (Claim 3). When such a closing claw is inserted into the closing slit, the closing claw can pass through the closing slit not only in the narrow toe portion but also in the maximum width portion. However, when trying to remove the closing claw from the closing slit, the maximum width portion is blocked by the closing slit, and the closing claw cannot be easily removed. That is, the packaging box can be easily closed, but can prevent inadvertent opening.

The distance between the right front inner locking fold for folding the right front inner locking flap and the right rear inner locking fold for folding the right rear inner locking flap is slightly narrower than the length of the right side of the bottom plate. In addition, the distance between the left front inner latching fold for folding the left front inner latching flap and the left rear inner latching fold for folding the left rear inner latching flap is determined by the length of the left side of the bottom plate. The right and left front inner locking flaps can smoothly contact the inner surface of the front plate portion, and the right and left rear inner locking flaps can smoothly contact the inner surface of the rear plate portion. (Claim 4).

The tear line includes a first tear line and a second tear line, and the first tear line is the right end side of the boundary between the front plate portion and the front plate portion, and the boundary between the bottom plate portion and the front plate portion. The second tear line is formed between the left end side of the boundary between the front plate portion and the front top plate portion and the substantially central portion of the boundary between the bottom plate portion and the front plate portion. A tear start point is further formed between the first tear line and the second tear line on the boundary side between the bottom plate portion and the front plate portion. With such a configuration, the packaging box can be opened without using a tool such as a cutter knife by gripping the vicinity of the tear starting point with a fingertip or the like and tearing the tear line.

The right side plate portion may have a flap in the right top plate connected to the side opposite to the bottom plate portion, and the left side plate portion may have a flap in the left top plate connected to the side opposite to the bottom plate portion. Item 6). Then, when the front top plate and the rear top plate are folded to close the opening of the box body, the flap on the right top plate can close the gap generated between the right side plate and the top plate, and the left top plate The inner flap can block a gap formed between the left side plate portion and the top plate portion. Of course, the blank (the packaging box) can be formed of cardboard or cardboard.

According to the packaging box according to the present invention having the above-described configuration, the pasting work at the time of assembling the packaging box, the tape sticking work, the glue for closing, and the like are not required, so the cost of assembling the packaging box etc. Can be reduced, and the gaps that can be created when the blank is folded can be reduced, and since it can be opened by hand without the need for tools such as a cutter knife, The cost can be reduced, and further, since it is not necessary to remove the tape or the like from the disassembled packing box even after opening, the cost of the recycling work can be reduced. And the packaging box concerning this invention can be set as the structure which can be reused as a packaging box after opening.

It is a figure which shows the schematic plane structure of the blank for forming the packaging box concerning one Example (Example 1) of this invention. It is a figure for demonstrating schematic structure of the closing nail | claw which the blank shown in FIG. It is a figure for demonstrating the structure of the right front inner side latching flap which the blank shown in FIG. 1 has. FIG. 2 is a diagram for explaining bending of a right side plate portion and a left side plate portion with respect to a bottom plate portion and locking of a right rear inner locking flap and a left rear inner locking flap in the blank shown in FIG. (A) shows the state immediately before locking, and FIG. It is a figure for demonstrating the bend of a back top board part, the front board part, a front top board part, a tear line, etc. in the blank shown in FIG. It is a figure for demonstrating closing of the packaging box formed with the blank shown in FIG. 1, and opening by a tear line. It is a figure for demonstrating the state which opened the closed packaging box shown in FIG. It is a figure for demonstrating reuse of the opened packaging box shown in FIG. 7 (FIG. 8 (a), (b)). It is a figure which shows the schematic plane structure of the blank for forming the packaging box concerning the other Example (Example 2) of this invention. It is a figure for demonstrating schematic structure of the closing nail | claw which the blank shown in FIG. 9 has, a closing slit, and the right and left front-back inner side latching flap. FIG. 10 is a diagram for explaining bending of the right side plate portion and the left side plate portion with respect to the bottom plate portion, and locking between the right rear inner locking flap and the left rear inner locking flap in the blank shown in FIG. (A) shows the state immediately before locking, and FIG. It is a figure for demonstrating the bending of a back top board part, a front board part, a front top board part, a tear line, etc. in the blank shown in FIG. It is a figure for demonstrating closing of the packaging box formed with the blank shown in FIG. 9, and opening by a tear line. It is a figure for demonstrating the state which opened the closed packaging box shown in FIG.

Hereinafter, the packaging box according to the present invention will be described with reference to the drawings.

<Schematic configuration of blank for forming a packing box>
The packaging box 1 concerning one Example (Example 1) of this invention is demonstrated with the blank 2 which forms it. 1 has a bottom plate portion 10, a front plate portion 20, a front top plate portion 30, a rear top plate portion 35, a rear plate portion 40, a right side plate portion 50, and a left side plate portion 55. The rear top plate portion 35 has a top plate flap 37 extending to the side facing the rear plate portion 40.

The right side portion 10a of the bottom plate portion 10 is a boundary (folded portion) between the bottom plate portion 10 and the right side plate portion 50, and the left side portion 10b opposite to the right side portion 10a is a boundary between the bottom plate portion 10 and the left side plate portion 55 ( Crease). The front side portion 10 c of the bottom plate portion 10 is a boundary (folded portion) between the bottom plate portion 10 and the front plate portion 20, and the rear side portion 10 d of the bottom plate portion 10 is a boundary between the bottom plate portion 10 and the rear plate portion 40. (Folded part).

The front plate portion 20 is interposed between the bottom plate portion 10 and the front top plate portion 30, and the rear plate portion 40 is interposed between the bottom plate portion 10 and the rear top plate portion 35. A boundary 20a between the front top plate portion 30 and the front plate portion 20 is a fold portion between them, and a boundary 40a between the rear top plate portion 35 and the rear plate portion 40 is a fold portion therebetween.

The right side plate portion 50 is interposed between the bottom plate portion 10 and the right top plate flap 53, and the left side plate portion 55 is interposed between the bottom plate portion 10 and the left top plate flap 58. The boundary 50a between the right top plate flap 53 and the right side plate portion 50 is a fold portion between them, and the boundary 55a between the left top plate flap 58 and the left side plate portion 55 is a fold portion therebetween. Yes.

The right side plate portion 50 has a right front inner side locking flap 51 connected to the front plate portion 20 side and a right rear inner side locking flap 52 connected to the rear plate portion 40 side. The boundary between the right side plate portion 50 and the right front inner side locking flap 51 is a fold portion (right front inner side inner locking fold portion 51a), and the boundary between the right side plate portion 50 and the right rear inner side locking flap 52 is It is a crease between the two (the right rear inner locking crease 52a).

The left side plate portion 55 has a left front inner side locking flap 56 connected to the front plate portion 20 side and a left rear inner side locking flap 57 connected to the rear plate portion 40 side. The boundary between the left side plate portion 55 and the left front inner side locking flap 56 is a crease (left front inner side locking fold portion 56a) between them, and the boundary between the left side plate portion 55 and the left rear inner side locking flap 57 is It is a crease between the two (left rear inner locking crease 57a).

The right top plate flap 53 is slightly narrower than the width of the right side plate portion 50, and its front end 53a is positioned slightly closer to the right rear inner locking flap 52 side than the right front inner locking fold portion 51a. Yes. The same applies to the front end 58a of the left top plate flap 58.

The blank 2 is typically formed of cardboard, but is not limited to cardboard and may be formed of cardboard or the like.

<Front plate and tear line>
The front plate portion 20 is provided with a first tear line 21 and a second tear line 22 formed by perforations. One end 21 a of the first tear line 21 is located at the end of the boundary 20 a between the front plate portion 20 and the front top plate portion 30 on the right front inner locking flap 51 side, and the other end 21 b is in front of the bottom plate portion 10. It is located at the approximate center of the side 10c. One end 22a of the second tear line 22 is positioned at the end of the boundary 20a on the left front inner locking flap 56 side, and the other end 22b is positioned at a substantially central portion of the front side portion 10c. Here, a tear start point portion 23 is formed between the other end 21 b of the first tear line 21 and the other end 22 b of the second tear line 22.

<Top plate>
The top plate portion is composed of a front top plate portion 30 and a rear top plate portion 35. The front top plate portion 30 includes a closing claw 32 in the vicinity of the center of the front end portion 31, and the rear top plate portion 35 has a closing slit 36 in the central region, and the closing claw 32 is formed into the closing slit 36. By inserting, the packaging box 1 can be closed by the top plate portion.

The vertical width of the rear top plate portion 35 is slightly narrower than the vertical width of the bottom plate portion 10 (the distance between the front side portion 10c and the rear side portion 10d of the bottom plate portion 10). On the other hand, the vertical width of the front top plate portion 30 (the interval between the boundary 20a and the side 30a facing the boundary 20a) is about one half of the vertical width of the bottom plate portion 10 (not including the closing claws 32). ). Therefore, when the packaging box 1 is closed, the width of the region where the front top plate portion 30 and the rear top plate portion 35 overlap is about 50% of the vertical width of the bottom plate portion 10. In addition, the structure of the front top plate part 30 and the back top plate part 35 is not limited to said structure.

<About the claw and the closing slit>
As shown in FIGS. 1 and 2, a closing claw 32 is formed in the vicinity of the center of the front end portion 31 of the front top plate portion 30. The closing claw 32 includes a connection portion 32j, a claw body portion 32t, and a maximum width portion 32a. , A toe portion 32b, and a cutout portion 32s. All of the constituent elements of the closing claws 32 are centered at the front end portion 31 of the front top plate portion 30.

The connecting portion 32j is interposed between the claw body portion 32t and the front top plate portion 30 (FIG. 2), and the claw body portion 32t has the widest maximum width portion 32a in the vicinity of the connecting portion 32j, and the toe portion 32b. The width is narrow toward The cutout portion 32 s has an elongated slit shape that spans the closing claw 32 and the front top plate portion 30 in the central portion of the connection portion 32j.

The closing slit 36 of the rear top plate portion 35 has a main cut line portion 36a, a sub cut line portion 36b, a cutout portion 36s, a gap 36s' and a tongue portion 36t (FIG. 2). All the components of the closing slit 36 are centered in the lateral width direction of the rear top plate portion 35.

Sub-cut line portions 36b are continuously formed at both ends of the main cut line portion 36a in a direction away from the boundary 40a. The interval between the main cut line portion 36a and the boundary 40a is about 50% of the vertical width of the bottom plate portion 10, and when the front top plate portion 30 and the rear top plate portion 35 are overlapped to close the packaging box 1, a closing claw 32 can be inserted into the main cut line portion 36a. The length of the main cut line portion 36 a is slightly shorter than the width of the maximum width portion 32 a of the closing claw 32. Accordingly, the closing claw 32 can be easily inserted into the closing slit 36, but after insertion, the maximum width portion 32a is blocked by the main cut line portion 36a and cannot be easily removed from the closing slit 36 (top plate portion). Can be securely closed.)

The cutout part 36s is formed from the main cut line part 36a toward the top plate flap 37 side, and the lateral width thereof is narrower than the lateral width of the connection part 32j of the closing claw 32. At the center of the cutout portion 36s, a tongue portion 36t extends toward the main cut line portion 36a, and a gap 36s' is formed between the tip and the main cut line portion 36a. The lateral width is slightly narrower than the lateral width of the cutout portion 32 s of the closing claw 32. The vertical width of the cutout portion 36s is slightly longer than the length of the connection portion 32j of the closing claw 32, and the length of the tongue portion 36t is slightly shorter than the vertical width of the cutout portion 36s. Therefore, when the closing claw 32 is inserted into the closing slit 36, the tongue portion 36t is locked to the cutout portion 32s of the closing claw 32, so that it becomes more difficult to remove the closing claw 32 from the closing slit 36 (the top plate portion). The closure will be more secure.)

<About locking flaps>
Next, the right front inner locking flaps 51 and 52 and the left front and rear inner locking flaps 56 and 57 will be described by taking the right front inner locking flap 51 as an example.

As shown in FIGS. 1 and 2, the right front inner side locking flap 51 is connected to the front side (front plate part 20 side) of the right side plate part 50, and the height is the height of the right side plate part 50 (right front inner side engagement). The length is approximately equal to the width of the bottom fold portion 51a), and the length is slightly more than 60% of the width of the bottom plate portion 10 (the length of the front side portion 10c).

As shown in FIG. 3, in the right front inner locking flap 51, the upper part is between the right top plate inner flap 53 side end of the right front inner locking fold 51 a and one end of the front end side 51 b of the right front inner locking flap 51. The bottom side 51d that is the side 51c and faces the top side 51c is shorter than the top side 51c. A region (tip region) generated by the difference in length between the upper side 51 c and the bottom side 51 d is a locking portion 51 r of the right front inner locking flap 51.

The engaging portion 51r is formed with a meshing portion 51s having a trough portion 51n on the bottom side 51d side, and the distal end side of the trough portion 51n is an engaging piece 51t. The engaging portion 51s has a substantially V-shape that is narrowest in the valley portion 51n and wide toward the bottom side 51d side, and has a rounded edge from the valley portion 51n to the locking piece 51t side. 51f is formed, and a hypotenuse 51e is formed between the valley 51n and the tip 51x of the bottom side 51d. The height of the locking piece 51t is 70 to 80% of the height of the right front inner locking flap 51.

The height of the right front inner locking flap 51 in the valley 51n is one half of the height of the right front inner locking flap 51, and the length between the valley 51n and the right front inner locking fold 51a is the bottom plate. This is half the width of the portion 10.

As shown in FIG. 2, the right rear inner locking flap 52 is formed in the same manner as the right front inner locking flap 51 with the right side plate portion 50 therebetween, and the left rear inner locking flap 57 is It is formed in the same manner as the right rear inner locking flap 52. However, the left rear inner side locking flap 57 has a length of the bottom side 57d equal to the length of the left rear inner side locking flap 57, while the upper side 57c is shorter than the bottom side 57d and the meshing part 57s. Is different from the right rear inner locking flap 52 in that it is formed on the upper side 57c side.

The left front inner locking flap 56 is symmetrically formed with the left rear inner locking flap 57 with the left side plate portion 55 therebetween. However, the left front inner locking flap 56 has a semicircular cutout portion 56x formed at a portion facing the meshing portion 56s on the bottom side 56d side, and the blank 2 is cut at the front end side of the bottom side 56d. It differs from the left rear inner side latching flap 57 in that it has a rectangular cutout portion 56y that occurs due to the circumstances described above. The semicircular cutout portion 56x is positioned on the inner side of the tear start point portion 23 in the packaging box 1.

<< About assembly of packing box >>
<Regarding locking of right and left front and rear inner locking flaps and formation of box>
Next, with regard to the locking of the right front and rear inner locking flaps 51 and 52 and the left front and rear inner locking flaps 56 and 57, the locking between the right rear inner locking flap 52 and the left rear inner locking flap 57 will be described as an example. .

As shown in FIG. 4A, valley folding is performed using the right side portion 10a and the left side portion 10b of the bottom plate portion 10 as crease portions so that the right side plate portion 50 and the left side plate portion 55 are orthogonal to the bottom plate portion 10. At this time, the right rear inner locking flap 52 is bent at the right rear inner locking fold 52a, and the left rear inner locking flap 57 is bent at the left rear inner locking fold 57a. The left rear inner locking flap 57 is positioned on the rear side portion 10 d of the bottom plate portion 10. Further, by locking the locking portion 52r and the locking portion 57r, the right rear inner locking flap 52 and the left rear inner locking flap 57 can be locked to each other. As a result, as shown in FIG. 4 (b), the right side plate portion 50a and the left side plate portion 55 are erected on the right side portion 10a and the left side portion 10b of the bottom plate portion 10, and the right rear portion is placed on the rear side portion 10d. The inner locking flap 52 and the left rear inner locking flap 57 are positioned so as to be substantially orthogonal to the bottom plate portion 10.

In FIG. 4B, the locking piece 52t of the right rear inner locking flap 52 and the locking piece 57t of the left rear inner locking flap 57 are positioned on the rear top plate portion 35 side. The locking piece 57t can also be positioned on the bottom plate 10 side. Similarly, the right front inner locking flap 51 and the left front inner locking flap 56 are locked. Then, on the four sides of the bottom plate portion 10, there are a right side plate portion 50, a right rear inner side locking flap 52, a left rear inner side locking flap 57, a left side plate portion 55, a left front inner side locking flap 56 and a right front inner side locking flap 51. A frame body 3 is positioned to form a box 3 having an internal space with the bottom plate portion 10 as a bottom (the side facing the bottom plate portion 10 is open) (FIG. 5).

At this time, in the right front inner locking flap 51 and the left front inner locking flap 56 that are locked to each other, as shown in FIG. 5, the semicircular cutout portion 56x of the left front inner locking flap 56 is the tear start point 23. Positioned above. The semicircular notch 56x and the tear notch 23x are opposed to each other with the front side portion 10c of the bottom plate portion 10 interposed therebetween. Further, the right top plate flap 53 and the left top plate flap 58 are bent toward the bottom plate portion 10 side, and then the rear plate portion 40 has an inner surface 40x (FIG. 4A) whose right rear inner locking flap 52 and left The rear top plate portion 35 is bent so as to be in contact with the rear inner locking flap 57, and the inner surface 35x is bent so that the inner surface 35x is in contact with the right top plate inner flap 53 and the left top plate inner flap 58.

At this time, the front end 53a of the right top plate inner flap 53 is located slightly closer to the rear plate 40 side than the right front inner side locking flap 51, and the right top plate inner flap 53, the right front inner side locking flap 51, A gap 53g is formed between the two. Similarly, a gap 58 g is formed between the left top plate inner flap 58 and the left front inner locking flap 56.

By the way, since the vertical width of the rear top plate portion 35 is slightly narrower than the vertical width of the bottom plate portion 10, the top plate flap 37 bent with respect to the rear top plate portion 35 is inserted between the gap 53g and the gap 58g on both sides thereof. Then, it can be positioned so as to contact the right front inner locking flap 51 and the left front inner locking flap 56. Thus, the opening of the box 3 is closed by the rear top plate portion 35.

<About closing the packing box>
After the opening of the box 3 is closed by the rear top plate portion 35, the front plate portion 20 with respect to the bottom plate portion 10 so that the inner surface 20 x of the front plate portion 20 contacts the right front inner locking flap 51 and the left front inner locking flap 56. And the front top plate 30 is bent toward the rear top plate 35. Since the vertical width (not including the closing claw 32) of the front top plate portion 30 is a half of the vertical width of the bottom plate portion 10, the closing claw 32 is positioned at the closing slit 36 to close the closing claw 32. It will be in the state which can be inserted in the slit 36. FIG. When the closing claw 32 is inserted into the closing slit 36, the opening of the box 3 is closed, and the inner surface 30x of the front top plate portion 30 is in contact with the rear top plate portion 35 to close the packaging box 1 as shown in FIG. it can. Of course, when the packaging box 1 is closed, a desired article or the like is accommodated in the packaging box 1.

Here, since the maximum width portion 32 a of the closing claw 32 is slightly wider than the length of the main cutting line portion 36 a of the closing slit 36, the main cutting line portion 36 a acts as a stopper of the closing claw 32. Further, the tongue portion 36t of the closing slit 36 is engaged with the cutout portion 32s of the closing claw 32, so that it is more difficult to remove the closing claw 32 from the closing slit 36 (the top plate portion is more reliably closed). .

The packaging box 1 closed in this way has the right and left front inner locking flaps 51 and 56 and the front plate portion 20 overlapping, and the right and left rear inner locking flaps 52 and 57 and the rear plate portion 40 overlap. 10 and the boundary between the front plate portion 20, the rear plate portion 40, the right side plate portion 50, and the left side plate portion 55 are free from gaps or breaks. The inner side of the tear notch 23x and the semicircular notch 56x is closed by a top flap 37.

In addition, the packaging box 1 has an upper edge on the front plate portion 20 side covered with the front plate portion 20 and the front top plate portion 30, and an upper edge on the rear plate portion 40 side covered with the rear plate portion 40 and the rear top plate portion 35, The upper edge of the right side plate portion 50 side is covered with the right side plate portion 50 and the right top plate inner flap 53 and then covered with the top plate portion, and the upper edge of the left side plate portion 55 side is covered with the left side plate portion 55 and Since it is covered with the left top plate flap 58 and then with the top plate portion, there is no gap or break. That is, the packaging box 1 formed by bending the blank 2 is free from gaps or breaks.

<About opening the packing box>
The tear notch 23x formed in the semicircular notch 56x of the left front inner locking flap 56 and the tear start point 23 of the front plate part 20 is positioned on the tear start point 23 as shown in FIG. . Therefore, when the fingertip is put on the tear start point 23, the first tear line 21 and the second tear line 22 formed on the front plate part 20 can be torn.

When the first tear line 21 and the second tear line 22 are torn in this way, the front plate portion 20 is connected to the two main front plate portions 20m connected to the bottom plate portion 10 and the front top plate portion 30 as shown in FIG. The top plate part composed of the front top plate part 30 and the rear top plate part 35 which are separated into one connected sub-front plate part 20n and close the box 3 is separated from the opening of the box 3 so that the packaging box 1 is Opened.

At this time, the rear plate portion 40 is separated from the right rear inner locking flap 52 and the left rear inner locking flap 57, but is locked between the right front inner locking flap 51 and the left front inner locking flap 56, and the right rear inner locking. Unless the locking of the stop flap 52 and the left rear inner locking flap 57 is released, the right side plate portion 50, the right rear inner locking flap 52, the left rear inner locking flap 57, the left side plate portion 55, the left front inner locking The box 3 formed on the four sides of the bottom plate portion 10 with the flap 56 and the right front inner locking flap 51 can maintain its shape (FIG. 7).

Further, if the engagement between the right front inner locking flap 51 and the left front inner locking flap 56 and the locking between the right rear inner locking flap 52 and the left rear inner locking flap 57 are released, the opened packaging box 1 The blank 2 can be developed on a plane. Here, since the bonding and tape sticking are not performed in the formation of the packaging box 1, the recycling work is easy.

<Reuse of packing box>
Next, the reuse of the opened packaging box 1 will be described. In the opened packaging box 1 shown in FIG. 7, the front top plate 30 can be separated from the rear top plate 35 by pulling out the closing claw 32 of the front top plate 30 from the closing slit 36 of the rear top plate 35. When the perforation is formed in the front side portion 10c of the bottom plate portion 10, the two main front plate portions 20m of the front plate portion 20 connected to the bottom plate portion 10 side can be separated from the bottom plate portion 10. . Even if the rear top plate portion 35 and the main front plate portion 20m are separated from the packaging box 1 in this way, the box 3 formed on the four sides of the bottom plate portion 10 maintains its shape as shown in FIG. Articles can be accommodated in the box 3.

After the article is stored in the box 3, the right top plate flap 53 and the left top plate flap 58 are bent, and the top plate flap 37 is locked to the right front inner locking flap 51 and the left front inner locking flap. By inserting the inner side of 56 and closing the box 3 with the rear top plate portion 35 as shown in FIG. 8B, the opened packaging box 1 can be reused. The semicircular cutout portion 56 x of the left front inner locking flap 56 is closed by the top plate flap 37.

When the packaging box 1 is reused, a slight gap is generated between the upper side 51 c (FIG. 3) of the right front inner locking flap 51 and the upper side 56 c of the left front inner locking flap 56 and the rear top plate portion 35. Therefore, it is desirable to close at least the gap with a tape or the like. It is also desirable to close the closing slit 36 with a tape or the like. When a slip indicating the destination is pasted, the closing slit 36 can be closed with this slip.

Even when the front top plate 30 is not separated from the rear top plate 35 and the two main front plates 20m connected to the bottom plate 10 are not separated from the bottom plate 10, the opened packaging box 1 is reused. can do. The right top plate flap 53 and the left top plate flap 58 are bent, and the top plate flap 37 is inserted inside the right front inner locking flap 51 and the left front inner locking flap 58 which are locked to each other, and the rear top plate portion The box 3 may be closed at 35.

In this case, first, the sub-front plate portion 20n of the front plate portion 20 connected to the front top plate portion 30 and the main front plate portion 20m of the front plate portion 20 connected to the bottom plate portion 10 are engaged with each other. It positions so that it may touch the outer surface of the stop flap 51 and the left front inner side latching flap 56 (the external appearance of the packaging box 1 at this time becomes like FIG. 6). After that, a tape or the like is attached to the right front inner side locking flap 51, the main front plate part 20m of the front plate part 20, the sub front plate part 20n, and the left front inner side locking flap 56.

A packaging box 1 'according to another embodiment (Example 2) of the present invention will be described together with a blank forming the same. In addition, about the component which has a function similar to Example 1, the same code | symbol is attached | subjected and those description is simplified or abbreviate | omitted.

<Schematic configuration of blank for forming a packing box>
9 has a bottom plate portion 10, a front plate portion 20, a front top plate portion 30, a rear top plate portion 35, a rear plate portion 40, a right side plate portion 50, and a left side plate portion 55. ing. The width of the right top plate flap 53 may be the same as the width of the right side plate portion 50 or may be slightly narrower. The same applies to the left top plate flap 58.

As shown in FIGS. 9 and 10, the front plate portion and tear line of the packaging box 1 ′ are configured in the same manner as the front plate portion and tear line of the packaging box 1. In addition, each tear line is not limited to the said structure, For example, what was similarly formed in the rear-plate part 40 may be used.

As shown in FIGS. 9 and 10, the vertical width of the rear top plate portion 35 (the distance between the boundary 40a with the rear plate portion 40 and the side (end portion side) 35a opposite to the boundary 40a) is the bottom plate. It is about 70 to 80% of the vertical width of the portion 10. On the other hand, the vertical width of the front top plate portion 30 (the distance between the boundary 20a with the front plate portion 20 and the side 30a of the front top plate portion 30 opposite to the boundary 20a) is a half of the vertical width of the bottom plate portion 10. One of them. Therefore, when the packaging box 1 ′ is closed, the width of the region where the front top plate portion 30 and the rear top plate portion 35 overlap is 20 to 30% of the vertical width of the bottom plate portion 10.

In addition, the structure of the front top board part 30 and the back top board part 35 is not limited to said structure. Further, the front top plate portion 30 and the rear top plate portion 35 are not limited to the above-described configuration, as long as the sum of their vertical widths is wider than the vertical width of the bottom plate portion 10. For example, the vertical width of the rear top plate portion 35 may be substantially equal to the vertical width of the bottom plate portion 10.

As shown in FIG. 10, the closing claw 32 and the closing slit 36 of the packaging box 1 ′ are configured similarly to the closing claw 32 and the closing slit 36 of the packaging box 1. As shown in FIGS. 9 and 10, the right front inner side locking flap 51 and the like of the packaging box 1 ′ are configured similarly to the right front inner side locking flap 51 and the like of the packing box 1. The semicircular cutout portion 56x is located on the inner side of the tear starting point portion 23 in the packaging box 1 '. The configuration of the right front inner side locking flap 51 in the packaging box 1 ′ is the same as the configuration of the right front inner side locking flap 51 in the packaging box 1 (see FIG. 3).

<Assembling the packing box>
As shown in FIGS. 11A and 11B, the box 3 of the packaging box 1 ′ can be assembled in the same manner as the packaging box 1. At this time, the semicircular cutout portion 56x of the left front inner locking flap 56 is positioned on the tear start point portion 23 (FIG. 12).

Further, after folding the right top plate inner flap 53 and the left top plate inner flap 58 toward the bottom plate 10 side, the inner surface 40x (FIG. 11A) of the rear plate 40 is the right rear inner locking flap 52 and the left. The rear top plate portion 35 is bent so as to be in contact with the rear inner locking flap 57, and the inner surface 35x is bent so that the inner surface 35x is in contact with the right top plate inner flap 53 and the left top plate inner flap 58. Then, since the vertical width of the rear top plate portion 35 is 70 to 80% of the vertical width of the bottom plate portion 10, 70 to 80 percent of the opening of the box 3 is blocked by the rear top plate portion 35. At this time, the closing slit 36 of the rear top plate portion 35 is located above the central portion of the bottom plate portion 10 (FIG. 12).

After closing 70 to 80% of the opening of the box 3 by the rear top plate portion 35, the bottom plate portion 10 is arranged so that the inner surface 20 x of the front plate portion 20 contacts the right front inner locking flap 51 and the left front inner locking flap 56. The front plate part 20 is bent. Further, the front top plate portion 30 is bent toward the rear top plate portion 35 side. Since the vertical width (not including the closing claw 32) of the front top plate portion 30 is a half of the vertical width of the bottom plate portion 10, the closing claw 32 is positioned at the closing slit 36 to close the closing claw 32. It will be in the state which can be inserted in the slit 36. FIG. When the closing claw 32 is inserted into the closing slit 36, the opening of the box 3 is closed. At this time, the inner surface 30x of the front top plate 30 is connected to the rear top plate 35, the right top plate flap 53 and the left top plate flap 58. In contact, the packaging box 1 'can be closed as shown in FIG.

<About opening the packing box>
Since the semicircular cutout portion 56x of the left front inner locking flap 56 is positioned on the tear starting point portion 23 as shown in FIG. 12, in the closed packaging box 1 ′, as shown in FIG. It contacts the inner surface 20x of the part 20. Therefore, the fingertip can be easily put on the tear starting point portion 23, and the first tear line 21 and the second tear line 22 formed on the front plate portion 20 can be easily torn.

When the first tear line 21 and the second tear line 22 are torn in this way, the front plate portion 20 is connected to the two main front plate portions 20m connected to the bottom plate portion 10 and the front top plate portion 30 as shown in FIG. The top plate portion composed of the front top plate portion 30 and the rear top plate portion 35 which are separated into one connected sub-front plate portion 20n and close the box 3 is separated from the opening of the box 3, and the packaging box 1 ' Is opened.

At this time, the rear plate portion 40 is separated from the right rear inner locking flap 52 and the left rear inner locking flap 57, but is locked between the right front inner locking flap 51 and the left front inner locking flap 56, and the right rear inner locking. Unless the locking of the stop flap 52 and the left rear inner locking flap 57 is released, the right side plate portion 50, the right rear inner locking flap 52, the left rear inner locking flap 57, the left side plate portion 55, the left front inner locking The box 3 formed on the four sides of the bottom plate portion 10 by the flap 56 and the right front inner locking flap 51 can maintain its shape (FIG. 14).

Note that each tear line is not limited to the above configuration, and may be formed in the rear plate portion 40 in the same manner. In this case, the tear starting point portion 23 is also formed on the rear plate portion 40, and a fingertip is put on the tear starting point portion 23 to tear the first tear line 21 and the second tear line 22, thereby The top plate portion composed of the front top plate portion 30 and the rear top plate portion 35 that have closed the body 3 is separated from the opening of the box body 3, and the packaging box 1 'is opened.

Further, if the locking of the right front inner locking flap 51, the left front inner locking flap 56, etc. is released, the opened packing box 1 'can be easily spread on a plane. Since the packaging box 1 ′ is not bonded or the like, the recycling work can be simplified.

It should be noted that the packaging box according to the present invention is not limited to each embodiment, and can be appropriately modified and implemented without changing the gist thereof.

DESCRIPTION OF SYMBOLS 1 Packing box 2 Blank 3 Box 10 Bottom plate part 10a Right side part of bottom plate part (boundary (fold part) between bottom plate part and right side plate part)
10b Left side part of bottom plate part (boundary (fold part) between bottom plate part and left side plate part)
10c Front side part of bottom plate part (boundary (fold part) between bottom plate part and front plate part)
10d Rear side portion of bottom plate portion (boundary (folded portion) between bottom plate portion and rear plate portion)
20 Front plate portion 30 Front top plate portion 31 Front end portion of front top plate portion 32 Closure claw 32a Maximum width portion of closure claw 32b Toe portion of closure claw 32j Connection portion of closure claw 32t Claw body portion of closure claw 35 Slit 37 Top plate flap 40 Rear plate portion 50 Right side plate portion 51 Right front inner side locking flap 51a Right front inner side locking fold portion 51r Right front inner side locking flap locking portion 52 Right rear inner side locking flap 52a Right rear inner side locking fold Portion 52r Locking portion of the right rear inner locking flap 53 Right flap inside the top plate 55 Left side plate portion 56 Left front inner locking flap 56a Left front inner locking fold portion 56r Locking portion of the left front inner locking flap 57 Left rear inner locking Stop flap 57a Left rear inner side locking fold 57r Left rear inner side locking flap locking part 58 Left top plate flap

Claims

A substantially quadrilateral bottom plate portion, a front plate portion and a front top plate portion connected to the front of the bottom plate portion, a rear plate portion and a rear top plate portion connected to the rear of the bottom plate portion, and a right side of the bottom plate portion. A packaging box formed by bending a blank having a right side plate part and a left side plate part connected to the left side of the bottom plate part,
The rear top plate portion has a top plate flap extending to the side facing the rear plate portion,
The right side plate portion has a right front inner locking flap connected to the front side and a right rear inner locking flap connected to the rear side,
The left side plate portion has a left front inner locking flap connected to the front side and a left rear inner locking flap connected to the rear side,
The right front inner locking flap, the right rear inner locking flap, the left front inner locking flap and the left rear inner locking flap are each formed with a locking portion,
The right side plate portion and the left side plate portion are bent in the same direction with respect to the bottom plate portion, and the right front inner locking flap and the left front inner locking flap are bent, and the locking portion of the right front inner locking flap and the When the latching portion of the left front inner latching flap is latched, the right rear inner latching flap and the left rear inner latching flap are bent, and the latching portion of the right rear inner latching flap and the left rear When locking the locking part of the inner locking flap,
The right side plate portion and the left side plate portion are positioned by being bent substantially vertically, and the right front inner side locking flap and the left front inner side locking flap are positioned substantially in contact with the front side portion of the bottom plate portion, Further, the right rear inner locking flap and the left rear inner locking flap are positioned so as to be substantially in contact with the rear side portion of the bottom plate portion, and a box body in which the upper portion of the bottom plate portion is opened can be formed.
Bending the rear plate portion substantially perpendicular to the bottom plate portion so that the rear plate portion is in contact with the right rear inner locking flap and the left rear inner locking flap;
The rear top plate portion and the top plate flap are folded so that the top plate flap is positioned in the vicinity of or substantially in contact with the right front inner locking flap and the left front inner locking flap, and the front plate portion is further moved to the bottom plate. The packaging box can be closed by folding the front top plate portion to the rear top plate portion with a closing means, being bent substantially perpendicular to the portion,
The closing means is formed in a closing claw formed in a front end portion of the front top plate portion, a cutout portion formed in the closing claw, a closing slit formed in the rear top plate portion, and the closing slit. A tongue portion, and when the closing claw is inserted and locked into the closing slit, the tongue portion is locked to the cutout portion,
A packaging box, wherein a tear line for opening the closed packaging box is formed at least on the front plate portion.
A substantially quadrilateral bottom plate portion, a front plate portion and a front top plate portion connected to the front of the bottom plate portion, a rear plate portion and a rear top plate portion connected to the rear of the bottom plate portion, and a right side of the bottom plate portion. A packaging box formed by bending a blank having a right side plate part and a left side plate part connected to the left side of the bottom plate part,
The right side plate portion has a right front inner locking flap connected to the front side and a right rear inner locking flap connected to the rear side,
The left side plate portion has a left front inner locking flap connected to the front side and a left rear inner locking flap connected to the rear side,
The right front inner locking flap, the right rear inner locking flap, the left front inner locking flap and the left rear inner locking flap are each formed with a locking portion,
The right side plate portion and the left side plate portion are bent in the same direction with respect to the bottom plate portion, and the right front inner locking flap and the left front inner locking flap are bent, and the locking portion of the right front inner locking flap and the When the latching portion of the left front inner latching flap is latched, the right rear inner latching flap and the left rear inner latching flap are bent, and the latching portion of the right rear inner latching flap and the left rear When locking the locking part of the inner locking flap,
The right side plate portion and the left side plate portion are positioned by being bent substantially vertically, and the right front inner side locking flap and the left front inner side locking flap are positioned substantially in contact with the front side portion of the bottom plate portion, Further, the right rear inner locking flap and the left rear inner locking flap are positioned so as to be substantially in contact with the rear side portion of the bottom plate portion, and a box body in which the upper portion of the bottom plate portion is opened can be formed.
Bending the rear plate portion substantially perpendicular to the bottom plate portion so that the rear plate portion is in contact with the right rear inner locking flap and the left rear inner locking flap;
The front plate portion is bent so as to block at least a part of the opening of the box, and the front plate portion is in contact with the right front inner locking flap and the left front inner locking flap. Is folded substantially perpendicular to the bottom plate portion, the front top plate portion is bent, and the front top plate portion is locked by a closing means, so that the packaging box can be closed.
The closing means is formed in a closing claw formed in a front end portion of the front top plate portion, a cutout portion formed in the closing claw, a closing slit formed in the rear top plate portion, and the closing slit. A tongue portion, and when the closing claw is inserted and locked into the closing slit, the tongue portion is locked to the cutout portion,
A packaging box, wherein a tear line for opening the closed packaging box is formed at least on the front plate portion or the rear plate portion.
The closing claw has a connection part and a claw body part,
The connecting portion is interposed between the front top plate portion and the claw body portion,
The claw body portion has a maximum width portion slightly wider than the width of the closing slit formed in the rear top plate portion in the vicinity of the connection portion, and the width is narrowed toward the toe portion. The packaging box according to claim 1 or 2.
The distance between the right front inner locking fold portion for folding the right front inner locking flap and the right rear inner locking fold portion for folding the right rear inner locking flap is slightly longer than the length of the right side portion of the bottom plate portion. Narrow,
Further, the distance between the left front inner locking fold for folding the left front inner locking flap and the left rear inner locking fold for folding the left rear inner locking flap is longer than the length of the left side of the bottom plate. The packaging box according to claim 1, wherein the packaging box is slightly narrow.
The tear line includes a first tear line and a second tear line;
One end of the first tear line is located at a substantially end portion on the right side plate portion side of the boundary between the front plate portion and the front top plate portion, and the other end is between the bottom plate portion and the front plate portion. Located in the middle of the boundary,
One end of the second tear line is located at a substantially end portion on the left side plate portion side of the boundary between the front plate portion and the front top plate portion, and the other end thereof is the bottom plate portion and the front plate portion. Located approximately in the middle of the boundary of
The packaging box according to claim 1 or 2, wherein a tear start point is interposed between the other end of the first tear line and the other end of the second tear line.
In the packaging box according to claim 1 or 2,
The right side plate portion further includes a right top plate flap connected to a side opposite to the bottom plate portion, and the left side plate portion further includes a left top plate flap connected to a side opposite to the bottom plate portion. Have
When folding the back top plate portion and the front top plate portion to close the opening of the box, the flaps in the right top plate and the flaps in the left top plate are positioned so as to be in contact with the inner surface of the back top plate portion. A packaging box characterized by being made.