JP3189393U - Packaging box - Google Patents

Abstract

The present invention provides a packaging box that has a locking mechanism that has an excellent durability that can be easily opened with little resistance during opening, without being opened carelessly after closing.
A box body portion 12 includes a folding plate 29 connected to an upper end of a second side plate, and a claw locking portion 30 that protrudes to the outside of the box body portion 12 when the folding plate 29 is bent. And the lid portion is formed on the lid top plate connected to the upper end of the first side plate, the first lid side plate, the second lid side plate, the lid connection plate, and the edge of the lid connection plate on the lid top plate side. The locking mechanism is configured to lock the claw locking portion 30 to the locked portion, hold the sealing, release the locking, and open the claw locking mechanism. The base end portion 30B of the stopper 30 has a first base end portion 30b on the side having the lid top plate fold line and a second base end portion 30c on the side facing the lid top plate fold line, and the second base end portion 30c is formed inside the box body 12 with respect to the first base end 30b.
[Selection] Figure 6

Description

  The present invention relates to a packaging box, and more particularly to a packaging box provided with a locking mechanism between a lid and a box body.

2. Description of the Related Art Conventionally, a packaging box is known in which a peripheral wall is continuously provided on the outer periphery of a polygonal bottom plate to form a container body, and a lid having a lid peripheral wall is continuously provided at the upper end of the peripheral wall.
In such a packaging box, after closing, the closed state is maintained without inadvertent opening, and when trying to open, there is a locking mechanism between the lid and the container body that can be easily opened with little resistance. desired.
Therefore, an upper flap that is bent inward in a substantially horizontal direction is continuously provided at the upper end of the peripheral wall of the container body, and a claw portion that protrudes to the outer periphery of the peripheral wall of the container body as the upper flap is bent is left and formed. Engage the claw part with the upper edge of the top plate side of the adhesive piece that connects the lid peripheral wall to maintain the closed state, and when opening the lid, rotate it in the direction to open the lid and bond the claw part A structure is known in which the engagement is released by releasing from the upper edge of the top plate side of the piece (see Patent Document 1).

In such a locking structure, in order to prevent unintentional opening, it is necessary to strengthen the engagement of the adhesive piece with the upper edge of the top plate side, for example, by increasing the protruding length of the claw portion. There is. However, in such a configuration, the claw part is difficult to be detached from the upper edge of the adhesive piece at the time of opening, and it becomes difficult to release the engagement. In addition, if it is forcibly opened in such a case, the claw part may be bent or damaged, and re-engagement may not be possible.
On the other hand, if the protruding length of the nail part is reduced to make it easier to open, it will be easier to open, but the nail part will be easily detached from the top edge of the adhesive strip, which is inadvertent. There is a risk of opening.

Utility Model Registration No. 3104426

  The present invention has been made in view of the above-mentioned problems, and keeps the sealed state without opening carelessly after closing, and can be easily opened with little resistance at the time of opening, and has excellent durability. It is an object of the present invention to provide a packaging box having a stop mechanism.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

In the first device, a box main body having an opening on at least the upper side, and the box main body connected to the box main body via a lid top plate folding line, and rotating the lid top plate folding line as a base axis to open the opening. A packaging box comprising: a lid part to be closed or opened; and a latching mechanism for latching the lid part to the box body part to hold the closure, and releasing the latch to open.
The box body portion stands up with respect to the bottom plate, the pair of first side plates facing each other, and the pair of second side plates adjacent to the first side plate and standing up with respect to the bottom plate and facing each other. Formed by a side plate, a folding plate connected to the upper end of the second side plate via a folding plate folding line, bent to the inner side of the box body and extending substantially horizontally, and the folding line. A claw locking portion that protrudes substantially horizontally to the outside of the box body portion as the plate is bent;
The lid portion is a top of the first side plate of the pair of first side plates, a lid top plate continuously provided via the lid top plate fold line, and a position facing the lid top plate fold line A first lid side plate that stands up with respect to the lid top plate, a pair of second lid side plates that are adjacent to the first lid side plate and stand up with respect to the lid top plate and face each other, and the first A lid connecting plate connected to the lid side plate, fixed inside the second lid side plate and connecting the first lid side plate and the second lid side plate, and an end of the lid connecting plate on the lid top plate side It has a locked part on the edge,
The locking mechanism is to lock the claw locking portion to the locked portion to hold the closing, release the locking and open the seal,
The claw locking portion has a claw portion and a base end portion,
The base end portion has a first base end portion on the side having the lid top plate fold line and a side facing the lid top plate fold line in a state where the claw portion protrudes substantially horizontally to the outside of the box main body portion. The second base end portion is formed on the inner side of the box body portion with respect to the first base end portion.

  The second device is the first device, characterized in that the claw portion is formed in a substantially U-shape.

In the third device, the first or second device,
Forming a short side edge on the first base end side of the claw part;
A long side edge is formed on the second base end portion side of the claw portion.

The fourth device is one of the first to third devices,
The first base end portion is formed on a boundary between the folding plate and the second side plate, and the second base end portion is formed on the folding plate.

The fifth device is one of the first to fourth devices,
In a state where the claw locking portion is locked to the locked portion, the first base end side of the claw portion and the locked portion are not in contact with each other.

  According to the present invention, due to the locking of the claw locking portion and the locked portion, the sealed state can be maintained without opening carelessly after closing, and can be easily opened with less resistance when opened, and It can be set as the packaging box provided with the latching mechanism excellent in durability.

The perspective view which shows the unsealed state of the packaging box 11. FIG. The perspective view which shows the sealed state of the packaging box 11. FIG. The top view of the expansion body 1 of the packaging box 11. FIG. The top view which shows the folding middle of the packaging box 11. FIG. The top view which shows the semi-finished state of the packaging box 11. FIG. FIG. 3 is a partially enlarged plan view of the vicinity of the claw locking portion 30 of the packaging box 11. The principal part expansion perspective view which shows the latching mechanism of the packaging box 11. FIG. The principal part expansion perspective view which shows the latching mechanism of the packaging box 11. FIG. The principal part expansion perspective view which shows the latching mechanism of the packaging box 11. FIG. (A) The principal part enlarged plan view which notched the part which shows the latching mechanism of the packaging box 11. FIG. (B) The principal part enlarged plan view which notched the part which shows the latching mechanism of the packaging box 11. FIG. (A) End view taken along line A1-A1 shown in FIG. (B) A2-A2 line end view shown in FIG. The principal part expansion perspective view which shows other embodiment. (A) (b) The principal part enlarged plan view which shows other embodiment.

  A packaging box 11 according to an embodiment of the present invention will be described with reference to FIGS.

  The packaging box 11 of the present invention described below is a packaging box that accommodates various articles such as food. The packaging box 11 is made of paperboard, but can be formed of other plate-like members such as cardboard sheets and plastic sheets.

As shown in FIG. 1, the packaging box 11 has a lid 13 connected to the box body 12.
The packaging box 11 is assembled into the assembled state shown in FIGS. 1 and 2 by assembling the unfolded body 1 shown in FIG.

  FIG. 1 shows an opened state of the packaging box 11, and FIG. 2 shows a sealed state of the packaging box 11. FIG. 3 shows the unfolded body 1 of the packaging box 11 with the inner surface of the box as the front side of the page.

    Hereinafter, for the sake of convenience, description will be made according to the direction of the arrow in the drawing, but the present invention is not particularly limited to being implemented according to the direction of the arrow in the drawing.

  First, the configuration of the packaging box 11 will be described with reference to FIG.

The part which comprises the box main-body part 12 of the packaging box 11 is demonstrated.
The bottom plate 21 is a part constituting the bottom of the packaging box 11.
A pair of first side plates 22, 23 constituting side plates on the front and rear sides of the box body 12 are connected to the upper and lower end edges of the bottom plate 21 via folding lines 41, 42. A pair of second side plates 24 constituting the side plates on the left and right sides of the box body 12 are connected to the left and right edges of the bottom plate 21 via a fold line 43. A receiving portion 43 a is formed between the bottom plate 21 and the second side plate 24 by cutting into a substantially U-shape so as to divide the fold line 43.

  Further, a side plate connecting plate 25 is connected to the left and right edges of the first side plate 22 via a fold line 44. An insertion piece 25a that is inserted into the receiving portion 43a at the time of assembly is formed on the lower edge of the side plate connecting plate 25.

  In addition, a clamping plate 26 is connected to the lower edge of the first side plate 23 via a fold line 45. A superposition plate 27 is connected to the left and right edges of the first side plate 23 via a fold line 46.

  A holding plate 28 is connected to the lower edges of the pair of second side plates 24 via folding lines 47, and a folding plate 29 is connected to the left and right edges via folding plate folding lines 48. Further, the second side plate 24 and the folding plate 29 are formed with a fold line 49 of approximately 45 degrees from the vicinity of the upper corner of the bottom plate 21.

  Further, near the boundary between the folding plate 29 and the second side plate 24, a claw locking portion 30 is formed by a substantially U-shaped cutting line 30a so as to divide the folding plate folding line 48. The claw locking portion 30 will be described in detail later.

  Next, the part which comprises the cover part 13 of the packaging box 11 is demonstrated.

  A lid top plate 31 is connected to the upper edge of the first side plate 22 via a lid top plate folding line 51. A first lid side plate 32 constituting a side plate on the front side of the lid portion 13 is connected to the upper edge of the lid top plate 31 via a fold line 52. A pair of second lid side plates 33 that constitute side plates on the left and right sides of the lid portion 13 are connected to end edges on the left and right sides of the lid top plate 31 via folding lines 53. The pair of second lid side plates 33 is formed with a fold line 54 of approximately 45 degrees from the upper corner of the lid top plate 31.

  A lid connecting plate 34 is connected to the left and right edges of the first lid side plate 32 via a fold line 55. An end edge of the lid connecting plate 34 on the lid top plate 31 side in the assembled state forms a locked portion 34a. The locked portion 34a will be described in detail later.

Next, the procedure for assembling the packaging box 11 from the unfolded body 1 to the semi-finished state will be described with reference to FIGS.
FIG. 4 is a plan view showing the folding body 1 in the middle of folding, and FIG. 5 is a plan view showing a semi-finished state in which the folding is completed.
The packaging box 11 is stored in a semi-finished state, assembled at the time of use, and used as a completed state.

The packaging box 11 is first folded from the state of the unfolded body 1 shown in FIG. 3 to the state shown in FIG.
Specifically, the superposed plate 27 is bent along the folding line 46, overlapped on the inner surface of the first side plate 23, and fixed with an adhesive or the like. Next, the sandwiching plate 26 is bent along the folding line 45 and overlapped on the outer surface of the overlapping plate 27 and the inner surface of the first side plate 23 folded as described above, and the portion where the sandwiching plate 26 and the first side plate 23 come into contact with each other. To fix. Here, a portion where the overlapping plate 27 and the sandwiching plate 26 overlap with each other forms a gap without being fixed.
Next, the second side plate 24 is bent along the folding line 43, the second side plate 24 and the folding plate 29 are overlaid on the inner surface of the bottom plate 21, and the upper side of the second side plate 24 is folded along the folding line 49. 29 and the outer surface of the second side plate 24. Next, the side plate connecting plate 25 is bent along the folding line 44 and overlapped on the inner surface of the first side plate 22. Next, the second lid side plate 33 is folded along the folding line 53 and overlapped on the back surface of the lid top plate 31, and the upper side of the second lid side plate 33 is folded along the folding line 54 to Overlapping. Subsequently, the lid connecting plate 34 is bent along the folding line 55 and overlapped with the inner surface of the first lid side plate 32. Further, the first lid side plate 32 is folded along the folding line 52 and overlapped with the inner surface of the lid top plate 31, and the outer surface of the lid plate connecting plate 34 is overlapped with the upper inner surface of the bent second lid side plate 33, The overlapped part is fixed with an adhesive or the like. In this state, the state shown in FIG. 4 is obtained.
Subsequently, the first side plate 22 is bent along the folding line 41 and overlapped with the inner surface of the bottom plate 21, and the surface of the side plate connecting plate 25 is overlapped with the upper inner surface of the bent second side plate 24, and the overlapped portion is overlapped. Adhere with an adhesive. Then, as shown in FIG. 5, it becomes a compact and flat semi-finished state.

  Next, a procedure for assembling the folded packaging box 11 in a semi-finished state to a completed state will be described.

First, from the semi-finished state shown in FIG. 5, the first side plate 22 superimposed on the bottom plate 21 is lifted upward and raised with respect to the bottom plate 21. Then, the side plate connecting plate 25 connected to the first side plate 22 and the upper side of the second side plate 24 fixed to the side plate connecting plate 25 are also pulled up at the same time, and the second side plate 24 folded and overlapped along the folding line 49 is formed. It develops in substantially the same plane and stands up at a substantially right angle with respect to the bottom plate 21. The side plate connecting plate 25 rises at a substantially right angle on the inner side of the second side plate 24. At this time, the second side plate 24 tries to bend in a U-shape toward the inner side of the box body 12 by the folding line 49, but the side plate connecting plate 25 is inserted by inserting the insertion piece 25a into the receiving portion 43a. Overlaps the second side plate 24 and prevents bending.
In this state, the first side plate 22 and the second side plate 24 stand up with respect to the bottom plate 21, and the box body portion 12 receives articles from the opening portion 14 formed on the upper side of the box body portion 12 and the opening portion formed on the front side. Can be housed inside.

After the article is accommodated in the box main body 12, the first side plate 23 is bent along the fold line 42 and is raised with respect to the bottom plate 21, and the holding plate 28 is moved along the fold line 47 along the first side plate 23. When bent into the gap formed by the overlapping plate 27 and the sandwiching plate 26, the first side plate 23 is kept upright and the front opening is closed.
Subsequently, the folding plate 29 is bent substantially horizontally toward the inner side of the box body 12 along the folding plate folding line 48. At this time, as the folding plate 29 is bent, the claw locking portion 30 protrudes substantially horizontally to the outside of the second side plate 24.

Next, the first lid side plate 32 of the lid portion 13 that is folded and flat is raised with respect to the lid top plate 31. Then, the lid connecting plate 34 provided continuously with the first lid side plate 32 and the upper side of the second lid side plate 33 fixed to the lid connecting plate 34 are simultaneously lifted, bent along the folding line 54 and overlapped. The side plate 33 expands in substantially the same plane and stands up at a substantially right angle with respect to the lid top plate 31. The lid connecting plate 34 stands substantially perpendicular to the inner side of the second lid side plate 33. At this time, the edge of the lid connecting plate 34 on the lid top plate 31 side forms a locked portion 34a. In addition, the second lid side plate 33 tries to bend in a U-shape toward the inner side of the lid portion 13 by the folding line 54, but the lid connecting plate 34 overlaps the second lid side plate 33 to prevent the folding. .
In this state, the first lid side plate 32 and the second lid side plate 33 are raised with respect to the lid top plate 31, and the state shown in FIG.
Subsequently, the lid top plate 31 is bent and rotated along the lid top plate folding line 51, the lid top plate 31 is set to the opening 14, the first lid side plate 32 is set to the upper side of the first side plate 23, and the second lid side plate is set. If 33 is put on the upper side of the second side plate 24, the opening 14 is closed and the state shown in FIG. 2 is obtained.

Next, the locking mechanism will be described with reference to FIGS.
The locking mechanism locks the claw locking portion 30 to the locked portion 34a to hold the sealing, releases the locking, and opens it.

First, the nail | claw latching | locking part 30 is demonstrated using FIG.
FIG. 6 is an enlarged plan view of the vicinity of the claw locking portion 30 of the packaging box 11 in the assembled state.
The claw locking portion 30 includes a claw portion 30A and a base end portion 30B.

The claw locking portion 30 is formed by cutting the folding plate 29 and the second side plate 24 into a substantially U-shape by a cutting line 30a.
The claw portion 30A is a portion defined by the cut line 30a, and as the folding plate 29 is bent, the tip side protrudes substantially horizontally to the outside of the box body portion 12 and is locked to the locked portion 34a.
The base end part 30B is a base end part of the claw part 30A, the first base end part 30b that is the start or end of the cut line 30a on the lid top plate folding line 51 side (the rear side in the figure), and the lid top plate A second base end portion 30c that is a start end or a terminal end of the cut line 30a is provided on the side (front side in the drawing) facing the folding line 51.
The first base end portion 30b is on the folding plate 29, and the box main body portion 12 is more than the second base end portion 30c in a state where the claw locking portion 30 protrudes substantially horizontally to the outside of the box main body portion 12. It is formed outside.
The second base end portion 30c is on the folding plate 29, and in a state where the claw locking portion 30 protrudes substantially horizontally to the outside of the box main body portion 12, the box main body portion 12 is more than the first base end portion 30b. It is formed on the inner side.
Further, the side edge on the first base end portion 30b side and the side edge on the second base end portion 30c side of the claw portion 30A have the same length of the portion protruding to the outside of the box body portion 12, so that the claw The side edge on the second base end portion 30c side of the portion 30A forms a long side edge 30e that is a side edge longer than the side edge on the first base end portion 30b side. The side edge on the first base end portion 30b side forms a short side edge 30d which is a side edge shorter than the side edge on the second base end portion 30c side (long side edge 30e).

  Next, the locked portion 34a will be described with reference to FIG. FIG. 7 is an enlarged perspective view of a main part in the vicinity of the locking mechanism showing a state before the packaging box 11 is closed.

The locked portion 34 a is a portion that locks with the claw locking portion 30, and is formed on the inner surface side of the lid portion 13.
Specifically, as shown in FIG. 7, a gap is formed between the edge of the lid connecting plate 34 fixed inside the second lid side plate 33 on the lid top plate 31 side and the inner surface of the lid top plate 31. And the to-be-latched part 34a is formed in the edge by the side of the lid | cover top plate 31 of the lid | cover connection plate 34.

The locked state of the locking mechanism will be described with reference to FIGS. 7, 8, and 10 (a).
FIG. 8 is an enlarged perspective view of a main part showing a locked state of the locking mechanism.
FIG. 10A is an enlarged plan view of a main part showing a locked state of the locking mechanism, and a part of the lid top plate 31 is cut away.
When the lid 13 is pivoted in the direction of closing (lower side in the figure) with the lid top plate folding line 51 as a base, and is covered and closed on the box body 12 (see FIG. 7), FIG. 8, FIG. 10 (a). As shown, the claw portion 30A is inserted into the gap between the locked portion 34a and the inner surface of the lid top plate 31, and the claw portion 30A locks with the locked portion 34a to close the packaging box 11. Hold.

  As described above, in the packaging box 11 of the present embodiment, the second lid side plate 33 is flatly folded by the fold line 54 in the semi-finished state, and is unfolded on substantially the same plane in the completed state. The second lid side plate 33 is held upright by being overlapped with the lid connecting plate 34, but the second lid side plate 33 tends to be bent in a substantially U shape toward the inner side of the lid portion 13 by the folding line 54. The lid connecting plate 34 is pushed toward the inside of the lid portion 13, and the locked portion 34 a and the claw locking portion 30 approach each other, so that the locking is stronger.

Next, unlocking of the locking mechanism will be described with reference to FIG. 9, FIG. 10 (b), and FIG.
FIG. 9 is an enlarged perspective view of a main part showing a state where the lid 13 is rotated in the opening direction to release the locking. FIG. 10B is an essential part enlarged plan view showing a state where the lid 13 is rotated in the opening direction to release the locking, and a part of the lid top plate 31 is cut away. Yes. FIG. 11A is an end view taken along line A1-A1 shown in FIG. 10B, and the second base end portion 30c side (long side edge 30e side) of the claw portion 30A extends from the locked portion 34a. Indicates a state of withdrawal. FIG. 11B is an end view taken along line A2-A2 shown in FIG. 10B, and the first base end portion 30b side (short side edge 30b side) of the claw portion 30A extends from the locked portion 34a. Indicates a state of withdrawal.
In order to open the packaging box 11, when the lid top plate folding line 51 is pivoted in the direction of opening the lid portion 13 (upper side in the figure) with the base axis as the base axis, the claw locking portion 30 is detached from the locked portion 34a and is engaged. The stop is released and the packaging box 11 is opened.

  Specifically, when the lid top plate fold line 51 is pivoted in the direction of opening the lid 13 with the base axis, the claw 30A that engages with the locked portion 34a resists, but when further rotated, The locked portion 34a is lifted in the direction of opening the claw portion 30A, and the claw portion 30A is eventually detached from the locked portion 34a due to the bending of the paperboard, and the locking between the claw portion 30A and the locked portion 34a is stopped. Canceled.

More specifically,
When the lid portion 13 is rotated in the opening direction, the locked portion 34a is also rotated, but the locked portion 34a first follows the second base of the claw portion 30A according to the rotation locus of the locked portion 34a. The end 30c side (long side edge 30e side) is lifted in the opening direction, and the first base end part 30b side (short side edge 30d side) is then lifted in the opening direction.
Here, the second base end portion 30c is formed on the inner side of the box main body portion 12 than the first base end portion 30b in a state where the claw locking portion 30 protrudes substantially horizontally to the outside of the box main body portion 12. Therefore, the second base end portion 30c side (long side edge 30e side) of the claw portion 30A is easier to lift in the opening direction than the first base end portion 30b side (short side edge 30d side). Resistance to rotation of the stopper 34a in the opening direction is small. On the other hand, the first base end portion 30b is formed on the outer side of the box main body portion 12 with respect to the second base end portion 30c in a state where the claw locking portion 30 is protruded substantially horizontally to the outer side of the box main body portion 12. Therefore, the first base end portion 30b side (short side edge 30d side) of the claw portion 30A is less likely to lift in the opening direction than the second base end portion 30c side (long side edge 30e side), and the locked portion Resistance to rotation of 34a in the opening direction is large.
Further, the second base end portion 30c side (long side edge 30e side) of the claw portion 30A has a longer side edge than the first base end portion 30b side (short side edge 30d side), and therefore the first base end portion 30b. It is easier to bend than the side (short side edge 30d side), and resistance to rotation in the opening direction of the locked portion 34a is small. On the other hand, the first base end portion 30b side (short side edge 30d side) has a shorter side edge than the second base end portion 30c side (long side edge 30e side), and therefore the second base end portion 30c side (long side). It is harder to bend than the side edge 30e side), and has a large resistance to rotation in the opening direction of the locked portion 34a.

  Accordingly, when the lid portion 13 is rotated in the opening direction, the claw portion 30A first has the second base end portion 30c side (long side) having a small resistance to the rotation in the opening direction of the locked portion 34a. The edge 30e side) is disengaged from the locked portion 34a so as to bend up from a state in which it protrudes substantially horizontally to the outside of the box main body portion 12 (see FIGS. 9, 10B, and 11A). Subsequently, the first base end portion 30b side (short side edge 30d side) having a large resistance to rotation in the opening direction of the locked portion 34a protrudes substantially horizontally to the outside of the box body portion 12. The claw locking part 30 and the locked part 34a are unlocked by releasing from the locked part 34a so as to slide while maintaining almost the state (FIGS. 9, 10B, 11). b)).

  The claw portion 30A detached from the locked portion 34a is detached while maintaining the state in which the first base end portion 30b side (short side edge 30d side) protrudes substantially horizontally to the outside of the box body portion 12. Therefore, the raised second base end portion 30c side (long side edge 30e side) is easily restored to a state of projecting substantially horizontally to the outside of the box body portion 12.

As described above, the packaging box 11 of the present invention is connected to the box body 12 having the opening 14 at least on the upper side and the box body 12 via the lid top plate folding line 51, and the lid top plate folding line 51. A lid 13 that pivots about the base 14 to close or open the opening 14, and the lid 13 is locked to the box body 12 to hold the closure, and the lock is released to release the lock. A packaging box 11 comprising a mechanism,
The box main body 12 is erected with respect to the bottom plate 21, the pair of first side plates 22, 23 and the first side plates 22, 23 that are opposed to each other, and is erected with respect to the bottom plate 21. A pair of opposing second side plates 24, a folding plate 29 connected to the upper end of the second side plate 24 via a folding plate folding line 48, bent to the inner side of the box body 12 and extending substantially horizontally; A claw locking portion 30 that is formed by the cut line 30a and that protrudes substantially horizontally to the outside of the box body portion 12 as the folding plate 29 is bent,
The lid portion 13 includes a lid top plate 31 connected to the upper end of one of the pair of first side plates 22 and 23 via a lid top plate folding line 51, a lid top plate folding line 51, and A first lid side plate 32 erected with respect to the lid top plate 31 and a pair of second lid side plates 33 that are adjacent to the first lid side plate 32 and are erected with respect to the lid top plate 31 and opposed to each other. A lid connecting plate 34 that is connected to the first lid side plate 32 and is fixed inside the second lid side plate 33 to connect the first lid side plate 32 and the second lid side plate 33, and a lid of the lid connecting plate 34. A locked portion 34a at the edge on the top plate 31 side,
The locking mechanism locks the claw locking portion 30 to the locked portion 34a to hold the sealing, releases the locking, and opens the seal,
The claw locking portion 30 has a claw portion 30A and a base end portion 30B,
The base end portion 30 </ b> B faces the first base end portion 30 b and the lid top plate folding line 51 on the side having the lid top plate folding line 51 in a state where the claw portion 30 </ b> A protrudes substantially horizontally to the outside of the box body 12. The second base end portion 30c is formed on the inner side of the box main body 12 with respect to the first base end portion 30b.

  Further, the claw portion 30A is formed in a substantially U-shape, the short side edge 30d is formed on the first base end portion 30b side of the claw portion 30A, and the long side edge 30e is formed on the second base end portion 30c side. To do.

  For this reason, the claw locking portion 30 and the locked portion 34a are firmly locked, and after closing, the lid 13 is opened in the direction of opening while opening, while maintaining the closed state where it is not opened carelessly. When the claw 30A is moved, first, the second base end 30c side (long side edge 30e side) having a small resistance to the rotation in the opening direction of the locked portion 34a is the The first base end portion 30b having a large resistance against rotation in the opening direction of the locked portion 34a is released from the locked portion 34a so as to bend up while being bent from the state of protruding substantially horizontally outward. The side (short side edge 30d side) is separated from the locked portion 34a so as to slide while maintaining a substantially horizontal protruding state to the outside of the box main body portion 12, and is locked with the claw locking portion 30. Since the locking of the portion 34a is released, the opening is easy. Further, the claw portion 30A detached from the locked portion 34a is detached while maintaining the state in which the first base end portion 30b side (short side edge 30d side) projects substantially horizontally to the outside of the box body portion 12. Therefore, the raised second base end 30c side (long side edge 30e side) can be easily restored to a state in which it protrudes substantially horizontally, the claw locking portion 30 is not easily bent or damaged, and is durable. Excellent and can be repeatedly sealed and opened.

  As mentioned above, although embodiment of this invention was described, the technical scope of this invention is not limited to these embodiment.

  For example, in this embodiment, both the first base end 30b side and the second base end 30c side of the claw 30A are engaged in a state where the claw locking portion 30 is locked to the locked portion 34a. As shown in FIG. 12, the second base end 30c side and the locked portion 34a are locked, and the first base end 30b side and the locked portion 34a are engaged. You may comprise so that and may become non-contact.

  When configured in this way, when the lid portion 13 is rotated in the opening direction, the claw portion 30A mainly disengages from the locked portion 34a so as to bend and lift the second base end portion 30c side. Resistance to the rotation of the locked portion 34a in the opening direction is small, and it can be opened easily.

  Moreover, as shown to Fig.13 (a), it is set as the shape which makes the 2nd base end part 30c side of the nail | claw part 30A protrude the outermost side of the 2nd side board 24, or as a curved shape as shown in FIG.13 (b). Even if the first base end 30b is formed on the boundary between the folding plate 29 and the second side plate 24 and the second base end 30c is formed on the folding plate 29, the effect of the present invention can be exhibited. .

  Moreover, although the packaging box 11 of this embodiment forms an opening part in an upper side and a front side, the structure of a box main-body part is not limited to this. For example, the first side plate and the second side plate may be provided continuously to form a cylinder, and the opening may be provided only on the upper side.

DESCRIPTION OF SYMBOLS 1 Unfolding body 11 Packaging box 12 Box body part 13 Cover part 14 Opening part 21 Bottom plate 22, 23 First side plate 24 Second side plate 25 Side plate connecting plate 25a Insertion piece 26 Holding plate 27 Superposition plate 28 Holding plate 29 Folding plate 30 Claw locking part 30A Claw part 30B Base end part 30a Cut line 30b First base end part 30c Second base end part 30d Short side edge 30e Long side edge 31 Lid top plate 32 First lid side plate 33 Second lid side plate 34 Lid connecting plate 34a Locked portion 43a Receiving portion 48 Folding plate folding line 51 Lid top plate folding line

Claims (5)

A box main body having an opening at least on the upper side, and a lid that is connected to the box main body via a lid top plate folding line, and that rotates or pivots on the lid top plate folding line to close or open the opening. And a locking mechanism that locks the lid portion to the box body portion to hold the closure, and unlocks and opens the lid, and a packaging box comprising:
The box body portion stands up with respect to the bottom plate, the pair of first side plates facing each other, and the pair of second side plates adjacent to the first side plate and standing up with respect to the bottom plate and facing each other. Formed by a side plate, a folding plate connected to the upper end of the second side plate via a folding plate folding line, bent to the inner side of the box body and extending substantially horizontally, and the folding line. A claw locking portion that protrudes substantially horizontally to the outside of the box body portion as the plate is bent;
The lid portion is a top of the first side plate of the pair of first side plates, a lid top plate continuously provided via the lid top plate fold line, and a position facing the lid top plate fold line A first lid side plate that stands up with respect to the lid top plate, a pair of second lid side plates that are adjacent to the first lid side plate and stand up with respect to the lid top plate and face each other, and the first A lid connecting plate connected to the lid side plate, fixed inside the second lid side plate and connecting the first lid side plate and the second lid side plate, and an end of the lid connecting plate on the lid top plate side It has a locked part on the edge,
The locking mechanism is to lock the claw locking portion to the locked portion to hold the closing, release the locking and open the seal,
The claw locking portion has a claw portion and a base end portion,
The base end portion has a first base end portion on the side having the lid top plate fold line and a side facing the lid top plate fold line in a state where the claw portion protrudes substantially horizontally to the outside of the box main body portion. And a second base end portion, wherein the second base end portion is formed on an inner side of the box body portion than the first base end portion. A packaging box according to claim 1,
A packaging box, wherein the claw portion is formed in a substantially U shape. A packaging box according to claim 1 or claim 2,
Forming a short side edge on the first base end side of the claw part;
A packaging box, wherein a long side edge is formed on the second base end side of the claw portion. A packaging box according to any one of claims 1 to 3,
The packaging box, wherein the first base end portion is formed on a boundary between the folding plate and the second side plate, and the second base end portion is formed on the folding plate. A packaging box according to any one of claims 1 to 4,
In the state which latched the said nail | claw latching | locking part to the to-be-latched part, the said 1st base end part side of the said nail | claw part and the said to-be-latched part are non-contact, The packaging box characterized by the above-mentioned.

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