JP6658440B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box.

  The packaging box has a box body for storing items such as merchandise, and a lid that opens and closes the top opening. The lid is sealed to the box body, and it is illegally opened during the distribution process. In some cases, after opening, the user can visually confirm that the package has been opened.

  For example, the packaging box of Patent Literature 1 has a box body that has an opening on the upper surface and stores stored articles inside, and a lid that is rotatably connected to an upper edge of a rear plate that forms the box body. Have. A front piece is connected to the upper edge of the front plate of the box body. A lid piece is connected to a front edge of the lid, and an insertion hole into which the front piece is inserted is formed at a position along a scribe line of the lid piece. In this packaging box, the cover is closed by inserting the cover piece of the cover along the inner surface of the front plate of the box body, and the front piece of the box body is inserted into the insertion hole of the cover. The front piece is provided with a hook so that the hook engages with the edge of the insertion hole and does not come off. Thereby, the lid is sealed with respect to the box body.

  The opening is in a state in which the lid is rotatable with respect to the box body by cutting off the front piece from the front plate along a score line formed on the front plate of the box body continuously with the front piece. Becomes In this packaging box, the front piece is cut off from the front plate, so that it can be visually recognized that the package has been opened. After opening, the lid that is rotatable with respect to the box main body is maintained in a closed state by inserting the cover piece along the inner surface of the front plate of the box main body.

JP 2006-326465 A

  This type of packaging box is often used as a storage box for articles even after the lid is properly opened. Therefore, even after opening, it is possible to visually identify once the lid has been opened, even after opening, the lid can be repeatedly opened and closed, and even if the lid is repeatedly opened and closed. A structure that allows the lid to maintain the box body closed is required.

  For example, in the packaging box of Patent Literature 1, the lid is maintained in a closed state only by inserting the cover piece along the inner surface of the front plate of the box body. Therefore, while the lid is repeatedly opened and closed, the strength of the cover piece and the front plate is reduced, and the lid is easily opened.

  The present invention provides a packaging box that allows the lid to maintain the closed state of the opening of the box body even after opening, while being visible once opened. Aim.

A packaging box for solving the above-mentioned problem includes a bottom plate, a front plate connected to a front edge of the bottom plate, a rear plate connected to a rear edge of the bottom plate, and a space between the front edge and the rear edge. A box body including a pair of side plates connected to mutually opposing side edges of the bottom plate, the front plate, the pair of side plates, and an opening surrounded by an upper edge of the rear plate; A lid having a lid plate rotatably connected to an upper edge of the rear plate and opening and closing the opening. The box body includes an insertion piece connected to an upper edge of the front plate, and a locking hole located along the upper edge of the front plate. The lid body includes a folded piece connected to a front edge of the lid plate, an insertion hole positioned along the front edge of the lid plate, into which the insertion piece is inserted, and the folded piece inserted into the insertion hole. A locking piece connected to the front edge of the lid plate, the locking piece being inserted into the locking hole, and a cutting line continuous with the insertion hole in the lid plate. And the cutout line that enables the locking piece to be cut from the lid plate. Before the locking piece is cut off from the lid plate , the insertion hole is formed by two slits on both sides of a base end of the locking piece, so that the insertion piece is together be inserted against the holes is prevented, the locking piece is capable inserted into the locking hole. When the locking piece is cut off from the lid plate along the cut line, an identification hole is formed in the lid plate inside the cut line, and in a state where the locking piece is cut from the lid plate. The insertion piece can be inserted into the insertion hole in which the two slits are one continuous slit .

  According to the above configuration, when storing articles for the first time in the packaging box, the locking pieces are inserted into the locking holes and sealed. When the lid is sealed, the lid plate is integrally provided with the locking piece, so that no identification hole is provided. The identification piece is formed by cutting off the locking piece from the lid plate when first opened. Thus, even when the lid is in the state of closing the box body, the user can easily visually check whether the packaging box is unopened or opened by checking for the presence of the identification hole. it can. When the lid is repeatedly opened and closed after opening, the folded piece can be inserted into the insertion hole to keep the lid closed.

  In the packaging box, a base end of the locking piece includes a hook that is locked to an edge of the locking hole, and the hook is inserted into the locking hole in a direction in which the locking piece is inserted into the locking hole. It may be configured to prevent the locking piece from being pulled out in the opposite direction.

  According to the above configuration, the hook portions of the locking pieces are locked to both longitudinal side edges of the locking hole. Thereby, it becomes difficult to pull out the locking piece in the direction opposite to the locking hole. The locking piece cut from the lid plate can be removed from the locking hole by pulling in the same direction as the insertion direction.

In the packaging box, the lid plate may be provided with a through hole continuous with the cut line.
According to the above configuration, a finger or the like can be inserted into the through hole to easily cut off the locking piece along the cut line.

In the packaging box, the front plate may have a perforation that is continuous with the insertion piece and extends the insertion piece to the front plate in a direction intersecting an upper edge of the front plate. Good.
According to the above configuration, the insertion piece is easily bent outwardly with respect to the front plate along the perforation, so that the insertion piece is easily inserted into the insertion hole.

In the packaging box, the box body may include an inner flap along upper edges of the pair of side plates.
According to the above configuration, the insertion piece is supported by the inner flap from below, so that the shape of the locking hole and the like are determined. Become.

  According to the present invention, it is possible to provide a packaging box in which the lid can keep the opening of the box body closed even after opening, while being visible once opened. be able to.

The perspective view showing the packaging box in one embodiment. A development view of a packaging box. FIG. 4 is a perspective view showing a state in which the box body is first assembled and the lid has opened the opening. FIG. 4 is a perspective view showing a state when the lid is first closed. The perspective view which shows the state which inserts the locking piece of a cover into the locking hole of a box main body. The perspective view showing the state where the locking piece was cut off from the lid. FIG. 9 is a perspective view showing a state where the locking pieces remain in the locking holes of the box body. The perspective view which shows the state which pulls out a locking piece from a locking hole. FIG. 9 is a perspective view showing a state in which the lid is closed again after opening, and a state in which the insertion piece of the box main body is bent to the outside of the front plate. The perspective view which shows the state which inserts the insertion piece of a box main body into the insertion hole of a cover. FIG. 7 is a perspective view showing a state where the lid is closed again after opening.

Hereinafter, an embodiment of the present invention will be described.
As shown in FIG. 1, a packaging box 1 to which the present invention is applied is a cardboard box, and has a box body 10 having a rectangular shape, and a lid 30 rotatably connected to the box body 10. It has. The box body 10 includes a front plate 11, a rear plate 12 facing the front plate 11, and a pair of first and second side plates 13 and 14 located between the front plate 11 and the rear plate 12. An opening 15 having a rectangular shape is formed in a region surrounded by the upper edge of the front plate 11, the upper edge of the rear plate 12, and the upper edges of the pair of first and second side plates 13, 14. reference). The box body 10 includes a front bottom plate 16 connected to the front plate 11, a rear bottom plate 17 connected to the rear plate 12, a first bottom flap 18 connected to the first side plate 13, and a second side plate 14. And a second bottom flap 19 connected to the second bottom flap 19.

  The lid 30 is connected to the upper edge of the rear plate 12. The lid 30 includes a lid plate 31 that closes the opening 15. A first inner flap 32 is connected to the upper edge of the first side plate 13, and a second inner flap 33 is connected to the second side plate 14. The cover plate 31 is first sealed with the locking piece 36 connected to the front edge of the cover plate 31 when the opening 15 is first closed after storing articles such as merchandise in the box body 10. Thereafter, when the opening 15 is opened, the locking pieces 36 (see FIG. 3) which are a part of the lid plate 31 are cut off. As a result, an identification hole 39 (see FIG. 11) is formed in the cover plate 31 at the position where the locking piece 36 was located, and the identification hole 39 can be used to identify the opened packaging box 1. Become. Once the packaging box 1 is opened, the closed state is maintained by inserting the insertion piece 22 connected to the upper edge of the front plate 11 of the box body 10 into the insertion hole 37 of the lid 30 (FIG. 10). And FIG. 11).

  FIG. 2 is a development view of the packaging box 1 and shows a blank sheet 2 of the packaging box 1. In the blank sheet 2, a front plate 11, a first side plate 13, a rear plate 12, and a second side plate 14 are connected via a first wire 20. The rear plate 12 has a seam 12b at a side edge parallel to the first wire 20 via a wire 12a. The joint margin 12b is joined to the second side plate 14 by joining means such as an adhesive or staple. A front bottom plate 16 is connected to a lower edge of the front plate 11 via a second wire 21. A first bottom flap 18 is connected to a lower edge of the first side plate 13 via a second wire 21. A rear bottom plate 17 is connected to the lower edge of the rear plate 12 via a second wire 21. A second bottom flap 19 is connected to the lower edge of the second side plate 14 via a second wire 21.

  The rear bottom plate 17 has an insertion recess 17a from the distal end toward the proximal end. In addition, the front bottom plate 16 has an insertion piece 16a inserted into the insertion recess 17a at the tip thereof. The first bottom flap 18 and the second bottom flap 19 include engaging portions 18a and 19a that are engaged with side edges of the insertion concave portion 17a.

  An insertion piece 22 is connected to the upper edge of the front plate 11 via a wire 22a. The insertion piece 22 has a trapezoidal shape, and the lower bottom is connected to the upper edge of the front plate 11. Both sides of the base end of the insertion piece 22 are provided with engagement grooves 22b. A locking hole 23 is formed at the base end of the insertion piece 22 at a position along the scribe line 22a. The locking hole 23 has a slit shape. The portion of the insertion piece 22 between the engagement groove 22b and the locking hole 23 on both sides is a portion provided with a scribe line 22a. The front plate 11 is formed with a perforation 24 having a concave shape downward from the upper edge. Specifically, the perforation 24 is a first portion 24 a extending from the upper edge of the front plate 11 to the lower edge from both sides of the base end of the insertion piece 22, and two first portions 24 a. And a second portion 24b connecting the ends of 24a. The first portion 24a is formed in an extension direction of both side edges in a direction orthogonal to the upper edge of the front plate 11 of the insertion piece 22, and the insertion piece 22 is inserted into the insertion hole 37 ( (See FIG. 3). Thus, the first portion 24 a enlarges the insertion piece 22 protruding from the upper edge of the front plate 11 in the direction of the front plate 11. At this time, the second portion 24b is not cut with respect to the front plate 11 and is a broken line.

  The lid plate 31 is connected to the upper edge of the rear plate 12 via a third wire 25, and has the same shape and size as the opening 15 that opens and closes. The first inner flap 32 is connected to the upper edge of the first side plate 13 via a third wire 25, and the second inner flap 33 is connected to the upper edge of the second side plate 14 via the third wire 25. Have been. The first inner flap 32 and the second inner flap 33 are butt flaps, and support the lid plate 31 from below when closing the opening 15 (see FIG. 3). Notch portions 32a and 33a are formed at the same positions on the distal end portions of the first inner flap 32 and the second inner flap 33, respectively. The notches 32a and 33a form circular holes when the distal ends of the first inner flap 32 and the second inner flap 33 are abutted, and perform the work of opening the first inner flap 32 and the second inner flap 33. Sometimes an operation hole for inserting a finger or the like.

  A folded piece 34 is connected to the front edge of the cover plate 31 via a fourth wire 35. When the cover plate 31 first seals the opening 15 (see FIG. 3) with the cover plate 31, the return piece 34 is folded back so as to overlap the inner surface of the cover plate 31 along the fourth scribe line 35 and is not used. The folded piece 34 is an insertion piece that is inserted along the inner surface of the front plate 11 when the lid 30 is repeatedly opened and closed after the lid 30 is opened. Specifically, the folded piece 34 includes an upper edge of the front plate 11, a front edge of the first inner flap 32 parallel to the front plate 11, and a front edge of the second inner flap 33 parallel to the front plate 11. It is inserted into an insertion hole 26 (see FIG. 4) having a slit shape.

  The folded piece 34 is formed by punching a central portion of the folded piece 34 from the fourth wire 35 toward the tip to form a locking piece 36. The locking piece 36 has a trapezoidal shape, and is connected to the front edge of the cover plate 31 via the fourth wire 35. On both sides of the base end of the locking piece 36, a stepped hook portion 36a is provided. In the hook portion 36a, the locking piece 36 becomes wider toward the base end side from the distal end side of the locking piece 36, and becomes narrower at the base end portion, thereby forming a step. The locking pieces 36 are inserted into the locking holes 23 when the lid 30 seals the box body 10, and the hooks 36 a are locked by the steps being locked at both ends of the locking holes 23. The piece 36 is prevented from being pulled out in the reverse insertion direction.

  A cutout line 38 is formed on the cover plate 31 in a semicircular shape from the front edge toward the rear edge. Both ends of the cutout line 38 are located at the base end of the locking piece 36, that is, at the narrow portion of the hook 36a. The locking piece 36 is used when the opening 15 is sealed by the lid 30, that is, inserted into the locking hole 23 only once at first, and is cut off from the lid plate 31 when opened. When the locking piece 36 is cut off from the lid plate 31, the locking piece 36 is cut off from the lid plate 31 along the cut line 38. At a position separated from the fourth wire 35, a through-hole 38a continuous with the cutout line 38 is formed. The through hole 38a has, for example, a semicircular shape, and is a hole into which a finger or the like is inserted when performing an operation of cutting the locking piece 36 from the cover plate 31.

  On both sides of the base end of the locking piece 36, insertion holes 37 into which the insertion pieces 22 are inserted are formed at positions along the fourth scribe line 35. The insertion holes 37 on both sides of the locking piece 36 each have a slit shape, the central portion is closed by the base end of the locking piece 36, and the insertion piece 22 cannot be inserted. I have. When the locking piece 36 is cut off from the cover plate 31 in the insertion hole 37, the divided two slits become one continuous slit, and the insertion piece 22 can be inserted. The width W1 of the insertion hole 37, which is one continuous slit after the cutting off of the locking piece 36, matches the width W2 of the base end of the insertion piece 22 (the portion of the engagement groove 22b). In addition, the width W3 of the base end portion (the portion of the hook portion 36a) of the locking piece 36 matches the width W4 of the locking hole 23.

  Next, a method of assembling and using the packaging box 1 configured as described above will be described. First, the joint 12b is joined to the inner surface of the second side plate 14 by joining means such as an adhesive or staple. Next, in order to form the bottom surface of the box body 10, the rear bottom plate 17 is bent inward along the second wire 21, and then the first bottom flap 18 and the second bottom flap 19 are connected to the second wire 21. Fold inward along. As a result, the first bottom flap 18 and the second bottom flap 19 are in a state of overlapping with a part of the insertion recess 17 a of the rear bottom plate 17. Then, the front bottom plate 16 is bent inward along the second scribe line 21, and the insertion piece 16 a is inserted into the insertion recess 17 a from the outside of the first bottom flap 18 and the second bottom flap 19 toward the inside of the box body 10. insert. At this time, the engaging portions 18a and 19a also move over the periphery of the insertion recess 17a and are displaced inside the box body 10. Thereby, as shown in FIG. 3, the insertion piece 16a and the engaging portions 18a and 19a are engaged with the peripheral edge of the insertion concave portion 17a, and the bottom surface of the box main body 10 is hardly removed. A rectangular opening 15 is formed in a region surrounded by the upper edge of the front plate 11, the upper edge of the rear plate 12, and the upper edges of the pair of first and second side plates 13, 14. A stored article is inserted through the opening 15.

  As shown in FIG. 4, when the stored articles are stored in the box main body 10, the first inner flap 32 and the second inner flap 33 are bent inward along the third scribe line 25, and each other. The tips of the inner flaps are butted. The lid 30 is repeatedly opened and closed in a region surrounded by the upper edge of the front plate 11, the front edge of the first inner flap 32 parallel to the front plate 11 and the front edge of the second inner flap 33 parallel to the front plate 11. The insertion hole 26 into which the folded piece 34 is inserted at the time is formed. The notch 32a of the first inner flap 32 and the notch 33a of the second inner flap 33 form a circular hole. Further, in the lid 30, the folded piece 34 is folded inward along the fourth scribe line 35 so as to overlap the inner surface of the lid plate 31 (the direction of arrow A in FIG. 4). As a result, the locking piece 36 formed by punching out the folded piece 34 projects into the cover plate 31. Further, in the box main body 10, the insertion piece 22 is bent along the scribe line 22 a and overlaps the first inner flap 32 and the second inner flap 33.

  As shown in FIG. 5, the cover plate 31 is bent along the third scribe line 25 so as to close the opening 15, that is, to overlap the first inner flap 32 and the second inner flap 33. (Arrow B direction in FIG. 5). Thereby, the locking piece 36 is bent along the fourth ruled line 35 and inserted into the locking hole 23 located along the ruled line 22a on the box body 10 side (the direction of arrow C in FIG. 1). When the locking piece 36 is inserted into the locking hole 23 from the distal end to the base end, the hooks 36 a of the locking piece 36 are locked to both longitudinal side edges of the locking hole 23. This makes it difficult for the locking piece 36 to be pulled out of the locking hole 23 in the direction opposite to the insertion direction (the direction opposite to the arrow C). That is, the lid 30 is in a state where the box main body 10 cannot be opened unless the locking piece 36 is broken, that is, a state where the lid 30 is sealed with respect to the box main body 10 (see FIG. 1).

  During the sealing operation as described above, the insertion piece 22 is overlaid on the first inner flap 32 and the second inner flap 33. Accordingly, since the insertion piece 22 is supported from below by the first inner flap 32 and the second inner flap 33, the position and shape of the locking hole 23 located along the scribe line 22a are different. Stabilize. Thereby, the locking piece 36 can be easily inserted into the locking hole 23. In particular, since the first inner flap 32 and the second inner flap 33 are butt flaps, the insertion piece 22 can be firmly supported from below.

  In addition, at the time of the sealing operation as described above, the insertion hole 37 of the lid 30 is partially closed by the locking piece 36 so as to be divided into two. Therefore, the insertion piece 22 is prevented from being erroneously inserted into the insertion hole 37 during the sealing operation.

  To open the lid 30, a finger or the like is inserted into the through hole 38a of the lid plate 31, and the area surrounded by the semicircular cutout line 38 is pulled. Then, the locking piece 36 is cut off along the cutting line 38, so that the locking piece 36 is cut off from the lid plate 31. The locking piece 36 remains inserted into the locking hole 23 while being separated from the lid plate 31. As shown in FIG. 6, the cover plate 31 separated from the front plate 11 of the box main body 10 is semi-automatically rotated in the direction indicated by the arrow B in FIG. Move.

  Thereafter, as shown in FIG. 7, the insertion piece 22 is opened, and the first inner flap 32 and the second inner flap 33 are opened. Thereby, the stored articles can be put in and out of the box body 10 through the opening 15.

  As shown in FIG. 8, in order to use repeatedly after opening the packaging box 1, the locking pieces 36 inserted into the locking holes 23 in the lid 30 are pinched by fingers or the like, and 8 (the direction of arrow C in FIG. 8). Thereby, the locking piece 36 is pulled out from the locking hole 23. Since the hook 36a is locked to the side edge of the locking hole 23, it is difficult to pull out the locking piece 36 in the direction indicated by the arrow C.

  As shown in FIG. 9, in order to close the lid 30 again, the first inner flap 32 and the second inner flap 33 are bent inward along the third scribe line 25, and the tips of the inner flaps of each other. Are matched. Thereafter, the insertion piece 22 is separated from the front plate 11 at the first portion 24a of the perforation 24, and is bent toward the outside of the box body 10 at the second portion 24b. That is, the insertion piece 22 is separated from the insertion hole 26 formed along the upper edge of the front plate 11. Then, when the lid plate 31 is rotated along the third scribe line 25 so as to close the opening 15, the folded piece 34 is inserted into the insertion hole 26. The folded piece 34 may be folded inward along the fourth ruled line 35 so as to overlap the inner surface of the cover plate 31 without being inserted into the insertion hole 26.

  As shown in FIG. 10, when the locking piece 36 is connected to the cover plate 31, the insertion hole 37 has two slits whose central portion is closed by the base end of the locking piece 36. However, when the locking piece 36 is cut off from the lid plate 31, it forms one continuous slit. The insertion piece 22 connected to the front plate 11 is inserted into the insertion hole 37 on the side of the lid body 30 formed of one continuous slit by being bent inward at the scribe line 22a. When the insertion piece 22 is inserted from the distal end portion to the base end portion, the engagement grooves 22b are locked to both side edges of the insertion hole 37 in the longitudinal direction, so that the insertion piece 22 is hardly removed from the insertion hole 37. As a result, after opening, the lid 30 keeps the box body 10 closed again, that is, is locked. Here, the locking force between the engaging groove 22b and the longitudinal side edges of the insertion hole 37 is not as strong as the locking force between the hook portion 36a and the longitudinal side edges of the locking hole 23. Therefore, the insertion piece 22 can be repeatedly inserted into and removed from the insertion hole 37. To open the lid 30, the insertion piece 22 is pulled out from the insertion hole 37. Thereby, the lid body 30 can rotate the lid plate 31 along the third ruled line 25.

  As shown in FIG. 11, once the packaging box 1 is opened, the identification pieces 39 are formed in the cover plate 31 by cutting off the locking pieces 36 along the cutout lines 38. On the other hand, as shown in FIG. 1, in the unopened packaging box 1, since the locking pieces 36 are not cut off, the identification holes 39 are not formed. The user can identify the unopened packaging box 1 or the opened packaging box 1 by the presence or absence of the identification hole 39 of the lid plate 31.

As described above, according to the above embodiment, the following effects can be obtained.
(1) When storing articles for the first time in the packaging box 1, the locking pieces 36 are inserted into the locking holes 23 and sealed. When sealed, the lid plate 31 is provided with the locking piece 36 integrally, so that the identification hole 39 is not provided. The identification hole 39 is formed by cutting off the locking piece 36 from the cover plate 31 when opening. Thereby, even when the lid 30 is in the state where the box body 10 is closed, the user can easily visually check whether the packaging box 1 is unopened or opened by confirming the presence or absence of the identification hole 39. You can check. The identification hole 39 is provided in the lid plate 31 that forms the upper surface of the packaging box 1. The upper surface of the packaging box 1 is a prominent place when viewed from the user, and the presence or absence of the identification hole 39 can be easily confirmed.

  (2) At the time of the sealing operation, the insertion hole 37 of the lid 30 is partially closed by the locking piece 36 so as to be divided into two. Therefore, it is possible to prevent the insertion piece 22 from being erroneously inserted into the insertion hole 37 during the sealing operation.

  (3) To close the lid 30 again after opening, the first inner flap 32 and the second inner flap 33 are closed, and then the folded piece 34 of the lid plate 31 is inserted into the insertion hole 26. In addition, the insertion piece 22 connected to the front plate 11 is inserted into the insertion hole 37. The insertion direction of the insertion piece 22 into the insertion hole 37 is a direction that intersects the rotation direction of the cover plate 31. Therefore, it is possible to prevent the cover plate 31 from rotating in the opening direction by itself.

  (4) When the locking piece 36 is inserted into the locking hole 23 from the distal end to the base end, the hook portions 36 a of the locking piece 36 are locked to both side edges of the locking hole 23 in the longitudinal direction. . This makes it difficult to pull out the locking piece 36 in the direction opposite to the locking hole 23. Therefore, it is possible to prevent the lid 30 from being opened by forcibly pulling out the locking piece 36 from the locking hole 23.

  (5) When the lid 30 is properly opened, the locking pieces 36 can be easily removed by pulling them from the locking holes 23 in the same direction as the insertion direction. Therefore, even when the packaging box 1 is continuously used after being opened, the locking piece 36 can be prevented from hindering the opening and closing operation of the lid 30.

  (6) The cover plate 31 is provided with a through-hole 38a that is continuous with the cutout line 38 for removing the locking piece 36. Accordingly, a finger or the like can be inserted into the through hole 38a to easily cut off the locking piece 36 along the cutout line 38.

  (7) The perforations 24 are separated from the front plate 11 along the first portion 24a, so that the size of the insertion piece 22 can be enlarged. Then, the enlarged insertion piece 22 is bent toward the outside of the box body 10 at the second portion 24b. Thus, when inserting the folded piece 34 into the insertion hole 26 along the upper edge of the front plate 11, the insertion piece 22 can be retracted from the track of the folded piece 34 moving in the direction of the insertion hole 26. . Thereby, the folded piece 34 can be smoothly inserted into the insertion hole 26 without being disturbed by the insertion piece 22.

  (8) At the time of the sealing operation, the insertion piece 22 is overlaid on the first inner flap 32 and the second inner flap 33. Accordingly, since the insertion piece 22 is supported from below by the first inner flap 32 and the second inner flap 33, the position and shape of the locking hole 23 located along the scribe line 22a are different. Stabilize. Thereby, the locking piece 36 can be easily inserted into the locking hole 23. In particular, since the first inner flap 32 and the second inner flap 33 are butt flaps, the insertion piece 22 can be firmly supported from below.

The above embodiment can be modified as follows.
The first inner flap 32 and the second inner flap 33 located inside the cover plate 31 may not be the butt flaps. Further, the first inner flap 32 and the second inner flap 33 may be omitted. For example, when the stored article just enters the storage space formed in the box body 10, the lid plate 31 can be supported by the upper surface exposed from the opening 15 of the stored article. Therefore, even if the first inner flap 32 and the second inner flap 33 are omitted, the position and shape of the locking hole 23 can be stabilized.

  The second portion 24b of the perforation 24 may be omitted as long as the enlarged insertion piece 22 can be bent. In addition, if the front plate 11 is bent, the insertion piece 22 can be retracted from the track of the folded piece 34 from the track of the folded piece 34 when the folded piece 34 is inserted into the insertion hole 26. Alternatively, the perforations 24 may be omitted.

  -The cover plate 31 may omit the through-hole 38a continuous with the cutting line 38. In this case, the area inside the cut line 38 can be cut off by pressing the area with a finger or the like. The cutting may be performed along the cutting line 38 using a cutting means such as a cutter.

  A hook portion 36 a that is locked to the edge of the locking hole 23 may be omitted from the base end of the locking piece 36. For example, when the locking piece 36 is pressed into the locking hole 23, the hook 36a may be omitted. A tape or a seal is attached to a portion where the locking piece 36 is inserted into the locking hole 23, and the hook 36a is omitted when it is difficult to pull out the locking piece 36 from the locking hole 23. You may.

  The bottom structure of the box body 10 including the front bottom plate 16, the rear bottom plate 17, the first bottom flap 18, and the second bottom flap 19 is not limited to the above-described example. For example, the bottom structure may be configured such that the outer flap is connected to the lower edge of the front plate 11 and the lower edge of the rear plate 12 and the inner flap is connected to the first side plate 13 and the second side plate 14.

  The packaging box 1 may be made of cardboard instead of cardboard.

  DESCRIPTION OF SYMBOLS 1 ... Packaging box, 2 ... Blank sheet, 10 ... Box main body, 11 ... Front plate, 12 ... Rear plate, 12a ... Wire, 12b ... Joint margin, 13 ... 1st side plate, 14 ... 2nd side plate, 15 ... Opening Part, 16: front bottom plate, 16a: insertion piece, 17: rear bottom plate, 17a: insertion recess, 18: first bottom flap, 18a: engagement part, 19: second bottom flap, 19a: engagement part, 20 ... 1st line, 21 ... 2nd line, 22 ... insertion piece, 22a ... line, 22b ... engagement groove, 23 ... locking hole, 24 ... perforation, 24a ... 1st part, 24b ... 2nd Part, 25 ... third wire, 26 ... insertion hole, 30 ... lid, 31 ... lid plate, 32 ... first inner flap, 32a ... notch, 33 ... second inner flap, 33a ... notch, 34 ... Folding piece, 35 ... fourth wire, 36 ... locking piece, 36a ... hook, 37 ... insertion hole, 38 ... cut-out line, 38a ... Through-hole, 39 ... discrimination hole.

Claims (5)

A bottom plate, a front plate connected to a front edge of the bottom plate, a rear plate connected to a rear edge of the bottom plate, and connected to mutually opposing side edges of the bottom plate between the front edge and the rear edge. A box body including a pair of side plates, and the front plate, the pair of side plates, and an opening surrounded by an upper edge of the rear plate.
A lid having a lid plate rotatably connected to the upper edge of the rear plate and opening and closing the opening,
The box main body, an insertion piece connected to the upper edge of the front plate,
Locking holes located along the upper edge of the front plate,
The lid is a folded piece connected to the front edge of the lid plate,
An insertion hole located along the front edge of the lid plate and into which the insertion piece is inserted,
A locking piece connected to a front edge of the lid plate and punched into the locking hole, wherein the locking piece is punched out so as to be continuous with the insertion hole;
The cover plate is provided with a cut line that is continuous with the insertion hole, and the locking piece can be cut off from the cover plate,
Before the locking piece is cut off from the lid plate , the insertion hole is formed by two slits on both sides of a base end of the locking piece, so that the insertion piece is While being prevented from being inserted into the hole, the locking piece can be inserted into the locking hole,
When the locking piece is cut off from the lid plate along the cut line, an identification hole is formed in the lid plate inside the cut line, and in a state where the locking piece is cut from the lid plate. The packaging box, wherein the insertion piece can be inserted into the insertion hole in which the two slits are one continuous slit . A base end of the locking piece includes a hook portion locked to an edge of the locking hole,
The packaging box according to claim 1, wherein the hook portion prevents the locking piece from being pulled out in a direction opposite to a direction in which the locking piece is inserted into the locking hole. The packaging box according to claim 1, wherein the cover plate has a through hole continuous with the cut line. The said front board is provided with the perforation which is continuous with the said insertion piece in the direction which intersects with the upper edge of the said front board, and expands the said insertion piece to the said front board. Or the packaging box according to item 1. The packaging box according to any one of claims 1 to 4, wherein the box body includes an inner flap along upper edges of the pair of side plates.