JP2017007728A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box where the base end side of a lid flap is continuously provided at one side of an opening surrounded by side walls, the closed side of the free end side of the lid flap is connected to the corresponding side wall, the opening is closed by the lid flap, and an unsealing prevention function is surely exhibited.SOLUTION: In a packing box, the closed side and both sides of a quadrangular lid flap 7 can be connected to corresponding side walls 4, 1, 3 via engaging connection parts 15, 16 where locking claws 17, 19 are inserted into slits 18, 20 and connected so as not to be pulled out.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a packaging box, and more particularly to a packaging box having a function of preventing unauthorized opening.

  As a packaging case having a function of preventing unauthorized opening, for example, as shown in Patent Document 1, the base end of a cover plate that closes the opening on one side of the opening of a bottomed rectangular cylindrical box The opening is closed with this lid plate, the insertion piece provided on the side wall of the box is inserted into the notch formed on the free end side of the lid plate, and the insertion piece is Some are locked so that they cannot be pulled out.

JP 2003-327242 A

  In the packaging box configured as described above, if the insertion piece provided on the side wall of the box is inserted into the notch formed on the free end side of the lid plate, the insertion piece cannot be removed. The flap cannot be undone swinging open.

  However, by bending and deforming the side wall and the cover plate of the box, it is possible to form a gap into which a thin object or the like is inserted by floating both sides other than the free end side of the cover plate from the opening. It was difficult to say that the unsealing prevention function was sufficiently exhibited.

  The present invention has been made by paying attention to such a situation, and an object of the present invention is to provide a packaging box that can more reliably exhibit an opening prevention function.

  In order to achieve the above object, the present invention is configured as follows.

(1) In the present invention, a base end side of a lid flap is connected to the side wall constituting one side of the opening surrounded by the side wall, and a closed side other than the base end side of the lid flap is closed. A packaging box connected to the side wall corresponding to a side and closing the opening with the lid flap,
A plurality of sides including the closed sides of the lid flap can be connected to the side walls respectively corresponding to the plurality of sides via an engagement connecting part,
The engagement connecting portion is configured to connect the latching claw into the slit so that it cannot be removed.

  According to the present invention, the sides other than the closed side of the lid flap can be connected by the engagement connecting part that inserts the locking claw into the slit so as not to be pulled out, and the side wall and the lid flap are bent and deformed, so that the closed side of the lid flap Further, it is possible to prevent the gap other than the closed side from being floated from the opening and forming a gap into which a thin object can be inserted between the lid flap and the side wall.

  (2) In a preferred embodiment of the present invention, the opening is a quadrangle surrounded by four side walls, and the base end side of the lid flap is connected to the side wall constituting one side of the opening. The opposite side of the lid flap that faces the base end is defined as the closed side, and the three sides including the closed side are connected to the three side walls respectively corresponding to the three sides via the engagement connecting portion. It is possible.

  According to this embodiment, the three sides including the closed side of the lid flap and the three side walls cannot be pulled out, so that the lid flap and the side wall cannot be greatly bent and deformed, and the three sides of the lid flap are opened. It is possible to effectively prevent a gap from being formed by floating from the top.

  (3) In one embodiment of the present invention, the engagement connecting portion includes the locking claw formed on one of the lid flap or the side wall and the lid claw or the other side formed on the other side wall. A slit, and the locking claw has a main portion and a protruding portion protruding outward in the main portion, and the slit is a main slit portion through which the main portion of the locking claw is inserted. And a sub slit portion through which the protruding portion of the locking claw is inserted, and the sub slit portion is provided in a non-linear manner at the end of the main slit portion.

  According to this embodiment, when the locking claw is inserted into the slit, the overhanging portion and a part of the slit are deformed so that the overhanging portion passes through the slit, and the overhanging portion restored to the original shape through the slit is By engaging the inner side, the locking claw cannot be pulled out. That is, the engagement connecting portion cannot be released and the opening of the lid flap is prevented.

  (4) In the embodiment of (3) above, the main slit portion and the sub slit portion may be continued in parallel with each other through a step.

  According to this embodiment, the protruding portion of the locking claw can pass through the auxiliary slit portion for inserting the protruding portion in the slit with relatively little deformation, and the insertion operation of the locking claw can be easily performed.

  (5) In another embodiment of the present invention, the locking claw is formed at the tip of an arm portion that can be raised and deformed.

  According to this embodiment, since the locking claw is cut and raised and formed at the tip of the deformable arm portion, even after the lid flap is swung to the closed position, the locking claw is made into a slit while bending the arm portion. The insertion operation can be performed, and the sealing operation becomes easy.

  According to the present invention, the closed side of the lid flap and the sides other than the closed side can also be coupled by the engagement coupling portion that inserts the latching claw into the slit so as not to be pulled out, and the side wall and the lid flap are bent and deformed, It is possible to prevent the gap between the lid flap and the side wall from being inserted into the gap between the lid flap and the side wall. Can be demonstrated.

FIG. 1 is a developed view of a base paper constituting a packaging box according to an embodiment of the present invention as viewed from the inner surface side. FIG. 2 is an external perspective view showing the middle of assembling the packaging box using the base paper of FIG. FIG. 3 is an external perspective view of the assembled packaging box. FIG. 4 is an external perspective view showing the packaging box during the sealing operation. FIG. 5 is a cross-sectional plan view of the packaging box. FIG. 6 is an external perspective view showing the sealed packaging box. FIG. 7 is a cross-sectional view of the engagement connecting portion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a developed view seen from the back surface (inner surface) side of a base paper B constituting a packaging box A according to an embodiment of the present invention, FIG. 2 is an external perspective view of the packaging box A in the middle of assembly, FIG. 3 is an external perspective view of the assembled packaging box A, respectively.

  This base paper B is formed by punching and cutting a cardboard formed by laminating decorative paper on the outer surface, and the first to fourth side walls 1, 2, 3, 4 of the four rounds are A series of lines are formed in parallel via folding lines a, b, and c.

  Inner flaps 5 and 6 are connected to the upper ends of the first side wall 1 and the third side wall 3 via fold lines d and e, respectively, and the fold line is connected to the upper end of the second side wall 2. A lid flap 7 is continuously provided via f, and bottom flaps 9, 10, 11, 12 are provided at lower ends of the side walls 1, 2, 3, 4 via folding lines g, h, i, j. Each one is connected. A glue margin 13 is connected to the outer end of the fourth side wall 4 via a fold line k, and a folding piece 14 is connected to the free end of the lid flap 7 via a fold line l. It is installed.

  The base paper B configured as described above is obtained by folding the side walls 1, 2, 3 and 4 inward, and bonding the outer surface of the adhesive margin 13 to the inner surface of the outer end of the first side wall 1 to form a square tube The body is assembled. Further, the side walls 1 and 2 are folded inward, the first bottom flap 9 and the second bottom flap 10 are overlapped and bonded with an adhesive s such as a double-sided tape, and the side walls 3 and 4 are folded inward. The third bottom flap 11 and the fourth bottom flap 12 are overlapped and bonded together with an adhesive s.

  Here, the second bottom flap 10 and the fourth bottom flap 12 are formed with fold lines m and n that are easily formed by intermittently forming slits at an angle of 45 degrees from the corner. The two bonded bottom flaps 9, 10; 11, 12 are folded inward (upper side) via folding lines m, n, respectively, so that the first side wall 1 and the second side wall 2 are The entire side of the packaging box can be folded flat so that the third side wall 3 and the fourth side wall 4 overlap each other, and the packaging box A before use can be stored and transported in a low volume. It has become.

  In use, the side walls 1, 2, 3 and 4 folded flat are folded up into a square tube shape, and as shown in FIG. 5, the two bonded bottom flaps 9, 10; A packaging box A having a bottom surface that crosses in a bowl shape while standing and does not deform outward (downward) is assembled.

  When the packaging box A as described above is used, after the article is stored, the opening of the packaging box A is closed with the lid flap 7. Conventionally, the folding line f of the rectangular lid flap 7 is used. Lock the closed side indicated by the fold line l that faces the indicated base end side to the corresponding fourth side wall 4 so that it cannot be extracted by a notch and an insertion piece, for example, as in Patent Document 1 above. doing.

  For this reason, by bending and deforming the side wall of the packaging box and the lid flap, it is possible to form a gap in which both sides other than the closed side of the lid flap can be lifted from the opening and a thin object can be inserted. And the opening prevention function was not sufficient.

  In this embodiment, in order to enhance the opening prevention function, the closed side indicated by the fold line 1 of the lid flap 7 and the both side sides on both sides thereof correspond to the three side walls 4, 1, 3 respectively corresponding to FIG. And as shown in FIG. 6, it connects respectively via the engagement connection parts 15 and 16. As shown in FIG.

  That is, the engagement connecting portion 15 that connects the closed side indicated by the folding line 1 of the lid flap 7 and the fourth side wall 4 is provided continuously at the center of the upper end of the side wall 4 also shown in FIGS. The latching claw 17 and the slit 18 provided at the center on the folding line 1 of the folding piece 14 in the lid flap 7 are configured.

  The locking claw 17 is formed in a trapezoidal shape having a protruding portion 17b on both sides of the main portion 17a formed to have a predetermined width, and the main portion 17a is connected to the upper end of the arm portion 17c formed by cutting the side wall 4. It is installed. On the other hand, the slit 18 is used for insertion of a main slit portion 18a having a width through which the main portion 17a of the locking claw 17 is inserted, and an extension portion that is provided in parallel at both ends with a step slightly larger than the thickness of the locking claw 17. It is comprised by the sub slit part 18b.

  An engagement connecting portion 16 that connects one side of the lid flap 7 and the first side wall 1, and an engagement connecting portion 16 that connects the other side of the lid flap 7 and the third side wall 3. With the same specification, the locking claw 19 provided continuously in the center of the side of the lid flap 7 and the slit 20 provided in the center on the folding lines d and e of the inner flaps 5 and 6 on the side walls 1 and 3. It is configured.

  The locking claw 19 is formed in a trapezoidal shape having protruding portions 19b on both sides of the main portion 19a formed to have a predetermined width, and the slit 20 is a main slit having a width that passes through the main portion 19a of the locking claw 19. The portion 20a and the auxiliary slit portion 20b for inserting the overhang portion, which are arranged in parallel with a step slightly larger than the thickness of the locking claw 19 at both ends thereof.

  When the opening is closed with the lid flap 7 after the article is stored in the packaging box A, the engagement claw 19 on both sides of the lid flap 7 is provided with the corresponding slit 20 as shown in FIG. The lid flap 7 is closed and swung while being inserted into the hook. Thereafter, as shown in FIG. 6, the engagement coupling portion 15 on the free end side of the lid flap 7 is cut and raised outward through the arm portion 17 c. The nail 17 is inserted into the slit 8 of the lid flap 7.

  When the locking claw 17 (19) is inserted into the slip 18 (20), the leading end of the main portion 17a (19a) of the locking claw 17 (19) is inserted into the main slit portion 18a (20a). While the projecting portion 17b (19b) of the claw 17 (19) and the stepped portion of the slit 18 (20) are deformed, the projecting portion 17b (19b) passes through the sub slit portion 18b (20b), and the locking claw 17 (19) In the state where the main portion 17a (19a) is inserted into the main slit portion 18a (20a) as far as the root, as shown in FIG. 7, the overhang portion 17b (19b) restored to the original shape is located inside the stepped portion. The locking claw 17 (19) cannot be pulled out.

  In this way, in a state where the lid flap 7 is connected to the side walls 1, 3, 4 via the three engagement connecting portions 15, 16, the lid flap 7 and the side walls 1, 3, 4 are bent and deformed, A gap formed between the flap 7 and the upper end of the side wall becomes extremely small, and it is possible to prevent insertion of a thin object or the like.

  The packaging box A is basically disposable, and the article is taken out from the packaged packaging box by breaking the lid flap 7 or the like.

[Other embodiments]
The present invention can also be implemented in the following forms.

  (1) When the length of one side in the lid flap 7 is large, an engagement connecting portion may be provided at a plurality of locations for one side.

  (2) As the form of the slits 18 and 20 in the engagement connecting portions 15 and 16, as described above, the main slit portions 18a and 20a and the sub slit portions 18b and 20b for inserting the overhang portions are connected in a stepped manner. In addition, the sub slit portions 18b and 20b for inserting the overhang portions may be connected to the end portions of the main slit portions 18a and 20a in a broken line shape at an appropriate angle.

  (3) Any of an engagement connecting portion provided with a locking claw on the side wall side and a slit on the lid flap side, and an engagement connecting portion provided with a locking claw on the lid flap side and a slit on the side wall side Whether to adopt this form can be arbitrarily selected according to the size of the packaging box A and the form of the inner flap of the opening.

  (4) Although the rectangular box-shaped packaging box provided with the square lid flap 7 is illustrated in the above embodiment, the present invention is applied to a polygonal cylindrical packaging box having a pentagonal cylindrical shape, a hexagonal cylindrical shape, or more. The invention can also be applied. Furthermore, in a cylindrical packaging box, the present invention can be applied with each side such as the base end side as a curved side.

1-4 First to fourth side walls 7 Lid flaps 15, 16 Engagement connecting portions 17, 19 Locking claws 17a, 19a Main portions 17b, 19b Overhang portions 17c Arm portions 18, 20 Slits 18a, 20a Main slit portions 18b 20b Sub slit part

Claims (5)

A base end side of the lid flap is continuously provided on the side wall constituting one side of the opening surrounded by the side wall, and a closed side other than the base end side of the lid flap is provided on the side wall corresponding to the closed side. A packaging box that connects and closes the opening with the lid flap,
A plurality of sides including the closed sides of the lid flap can be connected to the side walls respectively corresponding to the plurality of sides via an engagement connecting part,
The engagement connecting portion is connected so that the locking claw is inserted into the slit so that it cannot be removed.
A packaging box characterized by that. The opening is a quadrangle surrounded by four side walls, the base end side of the lid flap is connected to the side wall constituting one side of the opening, and is opposed to the base end side of the lid flap The opposite side to be the closed side, and the three sides including the closed side can be connected to the three side walls respectively corresponding to the three sides via the engagement connecting portion.
The packaging box according to claim 1. The engagement connecting portion includes the locking claw formed on one of the lid flap or the side wall, and the slit formed on the other side of the lid flap or the side wall,
The locking claw has a main part and an overhanging part protruding outward in the main part,
The slit has a main slit portion through which the main portion of the locking claw is inserted, and a sub slit portion through which the protruding portion of the locking claw is inserted, and the slit is provided at an end of the main slit portion. The auxiliary slit is connected in a non-linear manner
The packaging box according to claim 1 or 2. The main slit portion and the sub slit portion are continuous in parallel with each other through a step.
The packaging box according to claim 3. The locking claw is formed at the tip of the arm portion that can be raised and deformed,
The packaging box according to any one of claims 1 to 4.

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