JP3102426U - Packing box lid locking structure - Google Patents

Abstract

An object of the present invention is to provide a lid locking structure for a packaging box, which prevents floating of a lid and can easily hold a closed lid.
A body 1a includes a lid 1b, and the body 1a is bent inward in a substantially horizontal direction at an upper end of a peripheral wall 4b continuously connected to an outer periphery of a bottom plate 2 having a polygonal shape in a plan view. The upper flaps 11a and 11b that reinforce are provided in series. The lid 1b has a lid peripheral wall 7 fitted to the upper end of the peripheral wall 4b of the main body 1a connected to the top plate 6, and the end of one lid peripheral wall 7 of the adjacent lid peripheral walls 7 is attached to the end of the other lid peripheral wall. Adhesive pieces 8 were formed by bending and bonding so as to overlap the inner surface of the portion to form a peripheral wall corner. Then, the rear side of the top plate 6 is connected to the upper end of the rear peripheral wall 3b so as to be openable and closable so that the front side of the top plate 6 covers the upper end of the front peripheral wall of the main body 1a. ing.
[Selection diagram] FIG.

Description

  The present invention relates to a lid locking structure for a packaging box that accommodates a container such as a cake.

As shown in FIGS. 1 and 2 of Patent Literature 1 below, engagement holes 54 and 55 are formed in left and right side walls 17 and 18 of a top cover, and left and right side walls of a main body side are used as a conventional lid locking structure of a packaging box. Engagement claws 46, 47, 48, and 49 protruding from the upper edges of the upper and lower edges of the upper and lower lids are engaged with the engagement holes 54 and 55 of the right and left side walls 17 and 18 of the upper lid to maintain the lid closed. Paper boxes are known. Further, as shown in FIG. 6 of Patent Document 2, a lid side wall 23 and a lid front wall 22 are connected to the top plate 21 in a bendable manner, and an adhesive piece 24 connected to the lid side wall 23 is attached to the inner surface of the lid front wall 22. In a packaging box provided with a lid adhered to its side, a flap 14 having a locking piece 14a protruding at the front end is connected to the upper end of the side wall 12 of the container body in a bendable manner, and attached to the inner surface side of the lid. There is known a lid locking structure of a packaging box in which a locking piece 14a is fitted and locked to an upper edge (locked portion 24a) of the piece 24 to hold the lid closed.
Registered Utility Model No. 3095256 (FIGS. 1 and 2) JP-A-2002-370735 (FIG. 6)

  However, the known technique of Patent Document 1 has a configuration in which a locking claw projecting from an upper edge of a side wall of a container body is fitted into an engaging hole of a side wall of a lid and locked and fixed. In addition to having to increase the length of the protrusion, the locking claws protrude from the side wall of the lid after the box is assembled, so the appearance is poor. Or rupture the wrapping paper.

Further, in the known technique of Patent Document 2, although the locking portion does not protrude to the outside of the packaging box after the box is assembled, since the flap provided with the locking portion is not fixed integrally with the container body, the closed portion is closed. There has been a problem that the lid is lifted after the lid and the holding of the closed lid becomes unstable.
The present invention seeks to solve or improve these problems.

  First, the packaging box lid locking structure of the present invention for solving the above-mentioned problem is provided at the upper end of the peripheral walls 3a, 4a, 4b connected to the outer periphery of the bottom plate 2 having a polygonal shape in a plan view. A main body 1a provided with upper flaps 11a, 11b which are bent inward to reinforce the peripheral walls 3a, 4a, 4b, and lid peripheral walls 7, 9 fitted to upper ends of the peripheral walls 3a, 4a, 4b of the main body 1a. The peripheral wall corner is formed by being bent and bonded to the end of one peripheral wall 7 of the adjacent peripheral peripheral walls 7 and 9 so as to overlap the inner surface of the end of the other peripheral peripheral wall 9. And a lid 1b provided with an adhesive piece 8 connected thereto. The rear side of the top plate 6 is formed on the rear side peripheral wall 3b so that the front side of the top plate 6 covers the upper end of the front peripheral wall 3a of the main body 1a. A front end corner portion of the main body 1a on which the lid 1b is fitted to open and close in the packaging box 1 connected to the upper end so as to be openable and foldable. 7 at the fold 18 between the peripheral wall 4b and the upper flap 11b and at the position corresponding to the upper edge of the adhesive piece 8 when the lid 1b is fitted, the outer periphery of the peripheral walls 4a, 4b with the bending of the upper flap 11b. And a claw portion 21 that engages with the upper edge of the adhesive piece 8 on the top plate 6 side when the lid 1b is fitted is formed so as to be left uncut.

  Secondly, the position of the bent adhesive piece 8 and the claw portion 21 is a corner 27 between the front and side surfaces at the open / close end of the lid 1b.

  Third, the end of the peripheral wall 7 of the adhesive piece 8 is adhered, and the peripheral edge of the top plate 6 side is a non-adhered portion.

According to the lid locking structure of the packaging box of the present invention configured as described above, the following effects can be obtained.
(1) The engaging claw portion is formed so as to be left uncut so as to protrude to the outer periphery of the peripheral wall with the bending of the upper flap, and the claw portion engages with the peripheral edge of the adhesive piece of the lid peripheral wall on the top plate side. Therefore, there is no need to newly provide a locking hole for engagement, and since the engaging claw does not protrude after the box is assembled, the appearance is improved. You can confirm the suspension.

(2) By making the top plate side of the adhesive piece a non-adhesive portion, when the lid side wall and the lid front wall, which are the peripheral walls of the lid, are raised from the folded state to an angle with respect to the top plate, The interaction between the bonding portion and the fold formed on the lid side wall acts on the lid side wall to return to the top plate folding direction, and the top plate side periphery of the adhesive piece moves inward, so that the upper side of the main body side wall is moved. The formed claw portion can be easily locked, and the protrusion length of the claw portion can be reduced.

(3) Since the upper flaps connected to the upper end of the side wall of the main body are locked and fixed to each other, the claw protruding from the peripheral edge of the peripheral wall is integrally fixed to the main body, so that it is stable. The lid can be held closed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view after assembling the box, FIG. 2 is a perspective view showing the middle of assembling the box, and FIG. 3 is a developed view of the inner surface.

  The packaging box 1 is composed of a main body 1a and a lid 1b, and the main body 1a is connected to a square or rectangular bottom plate 2 as peripheral walls so that front and rear walls 3a and 3b and left and right side walls 4a and 4b can be bent and undulated. The lid 1b is provided with a square or rectangular top plate 6 extending along the extension of the rear wall 3b so as to be bendable. Left and right lid side walls forming a peripheral wall of the lid 1b are provided on the left and right ends and the front end of the top plate 6. A lid front wall 9 provided with an adhesive piece 8 that is connected to the left and right ends 7 and to be bent is connected to the main body 1a to form a cover 1b fitted to the main body 1a.

  Upper flaps 11a and 11b for reinforcing the upper ends of the peripheral walls are connected to the front wall 3a and the upper ends of the left and right side walls 4a and 4b in a bendable manner. The upper flaps 11a and 11b are bent inward at an angle. A lid receiving peripheral portion is formed. Hook portions 12a and 12b for locking are formed at both left and right ends of the upper flap 11a and front ends of the upper flap 11b. A front flap 13 is provided at the front ends of the left and right side walls 4a and 4b so as to be bent. A locking hole 14 is formed in a fold between the bottom plate 2 and the left and right side walls 4a and 4b, and a joining flap 16 is connected to the left and right ends of the rear wall 3b so as to be bent. At the lower front side of the joining flap 16 in the assembled state of the packaging box, a locking claw 17 that fits and locks into the locking hole 14 is formed to protrude.

  Further, a fold portion 18 between the left and right side walls 4a, 4b and an upper flap 11b which is connected to the upper ends of the left and right side walls 4a, 4b so as to be bent is provided at the upper end of the top plate 6 of the adhesive piece 8 when the cover 1b is fitted. A U-shaped notch 19 is formed at a position corresponding to the edge (in this example, on the front wall 3a side), and projects to the outer periphery of the left and right side walls 4a, 4b when the upper flap 11b is bent inward at an angle. The claw portion 21 is formed by being left uncut.

  As shown in the developed view of the inner surface of FIG. 3, adhesive margins 22a and 22b are formed on the inner surfaces of the left and right side walls 4a and 4b and on the back side of the joining flap 16, respectively. A fold line 23 (a valley line on the outside) is formed in the direction in which the upper flap 11b is divided equally and reaches the left and right front ends of the upper flap 11b. Similarly, adhesive margins 24a and 24b are formed on the inner surface side of the lid side wall 7 and the back side of the adhesive piece 8, and the lid side wall 7 is folded in a direction to divide the connection base end corner of the lid front wall 9 side into approximately two equal parts. An eye 26 (a valley line on the outside) is formed. A corner formed by the front wall 3a and the left and right side walls 4a and 4b is referred to as a corner 27.

  In the packaging box 1 having the above configuration, the bonding margin 22a of the left and right side walls 4a and 4b in the main body 1a is bonded and fixed to the bonding margin 22b of the joining flap 16, and the bonding margin 24a of the lid side wall 7 is fixed to the bonding piece 8 in the lid 1b. An adhesive is fixed to the adhesive margin 24b. Then, the left and right side walls 4a, 4b, the joining flap 16, the rear wall 3b, and the upper flap 11b are folded and overlapped on the bottom plate 2, the front wall 3a via the fold 23, and the upper flap 11a is folded to the inner side of the front wall 3a. At the same time, the lid side wall 7, the lid front wall 9, and the adhesive piece 8 are folded and overlapped on the inner surface side of the top plate 6 via the fold 26. Since the lid 1b is connected to the upper end of the rear wall 3b so as to be bendable, the lid side wall 7, the adhesive piece 8 and the lid front wall 9 are folded in conjunction with the folding of the rear wall 3b on the bottom plate 2. The lid 1b is also shipped to a shop or other site in a plate-like state (not shown) superimposed on the bottom plate 2.

  Since the lid 1b and the rear wall 3b are rotated in the upright direction from the above-mentioned folded and superposed state, the joining flap 16 connected to the rear wall 3b is adhesively fixed to the left and right side walls 4a, 4b. The left and right side walls 4a, 4b are turned upright in conjunction with the upright of the rear wall 3b. At the same time when the left and right side walls 4a, 4b are raised, the locking claws 17 at the lower front end of the joining flap 16 are fitted into the locking holes 14 to hold the left and right side walls 4a, 4b upright.

  With the rear wall 3b, the left and right side walls 4a, 4b, and the joining flap 16 standing upright with respect to the bottom plate 2, the contents such as cake are inserted and placed on the bottom plate 2 together with a conventionally known cake tray (not shown). I do. Then, the front flap 13 is bent inward at an angle to erect the front wall 3a, and the upper flaps 11a and 11b are bent at an angle inward in the horizontal direction to lock and fix the hook portions 12a and 12b to each other. The front wall 3a and the left and right side walls 4a and 4b are reinforced while holding the wall 3a upright, and a peripheral portion for the lid receiving is formed to complete the main body 1a. The lid 1b also rotates the lid front wall 9 in the upright direction with respect to the top plate 6, and the lid side wall 7 interlocked with the lid front wall 9 by the adhesive piece 8 rotates in the upright direction to form the lid 1b. Further, the lid 1b is fitted to the main body 1a, and the lid 1b is locked and fixed by a lid locking structure described later, thereby completing the box assembly of the packaging box 1.

  Next, the lid locking structure will be described with reference to FIGS. As described above, the U-shaped cut 19 is formed at a position corresponding to the peripheral edge of the bonding piece 8 on the top plate 6 side, and the claw portion 21 protrudes to the outer periphery with the horizontal inward bending of the upper flap 11b. Are formed uncut. Then, the lid 1b is fitted to the main body 1, and the claw portion 21 is engaged with a small gap formed on the top plate 6 side peripheral edge of the adhesive piece 8 adhered and fixed inside the lid 1b, thereby closing the lid 1b. It is configured to hold the lid. Further, as shown in the cross-sectional view of FIG. 5, since the lid side wall 7 is shipped in a state of being folded by the fold 26, the upper end of the adhesive piece 8 is elastically urged inward by the folding habit. Therefore, the claw portion 21 is locked by the adhesive piece 8, and the lid can be locked more reliably.

  In the lid locking structure of the packaging box of the present invention configured as described above, the claw portions 21 are provided on the left and right side walls 4a and 4b of the corner portion 27, and the adhesive pieces 8 bonded and fixed to the inner surface of the lid side wall 7 are provided. However, for example, a claw portion 21 may be provided on the front wall 3a side of the corner portion 27, and the adhesive piece 8 may be formed on the inner surface of the lid front wall 9 side. Further, in this example, the bottom plate or the top plate is described as a square or a rectangle. However, the present invention is not limited to the above-described embodiment, and the bottom plate or the top plate may be formed of another polygon such as a hexagon, and may be adjacent to the hexagonal bottom plate so as to be undulated. A claw portion may be formed to protrude from the peripheral edge of the corner portion of the peripheral wall.

It is a perspective view which shows the box assembly completion state of this packaging box. It is a perspective view which shows the assembling of this packaging box. It is an inner surface development view of this packaging box. It is a principal part expansion perspective view which shows the lid locking structure of this packaging box, (A) is before locking, (B) is after locking. It is VV sectional drawing of FIG.4 (B).

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Packaging box 1a Main body 1b Lid 2 Bottom plate 3a Front wall (peripheral wall)
3b Rear wall (peripheral wall)
4a Left side wall (peripheral wall)
4b Right side wall (peripheral wall)
6 Top plate 7 Lid side wall (Lid peripheral wall)
8 Adhesive strip 9 Front wall of lid (cover peripheral wall)
11a Upper flap 11b Upper flap 18 Folded part 21 Claw part 27 Corner part

Claims (3)

  At the upper ends of the peripheral walls (3a), (4a), and (4b) provided continuously around the outer periphery of the bottom plate (2) having a polygonal shape in a plan view, the peripheral walls (3a), (4a), A main body (1a) having upper flaps (11a) and (11b) reinforced to reinforce (4b), and a lid fitted to upper ends of peripheral walls (3a), (4a) and (4b) of the main body (1a). The peripheral walls (7) and (9) are connected to the top plate (6), and the end of one of the adjacent peripheral walls (7) and (9) of the lid peripheral wall (7) is connected to the other lid peripheral wall (9). And a lid (1b) provided with an adhesive piece (8) which is bent and bonded so as to overlap the inner surface of the end of the top plate (8) to form a peripheral wall corner, and the front side of the top plate (6) is attached to the main body (1a). ) Side of the front peripheral wall (3a) so that the rear side of the top plate (6) is folded over the upper end of the rear peripheral wall (3b) so that it can be folded and opened and closed. And a fold (18) between the peripheral wall (4b) of the front end corner (27) of the main body (1a) to which the lid (1b) is opened and closed and the upper flap (11b). ) At the position corresponding to the upper edge of the adhesive piece (8) at the time of fitting, the upper flap (11b) is protruded from the outer periphery of the peripheral walls (4a) and (4b) with the bending of the upper flap (11b). (1b) A lid locking structure for a packaging box in which a claw (21) that engages with an upper edge of the adhesive piece (8) on the top plate (6) side is cut off and formed inside.   2. The lid locking structure for a packaging box according to claim 1, wherein the position of the bent adhesive piece (8) and the claw portion (21) is a corner portion (27) between the front and side surfaces at the open / close end of the lid (1b). .   3. The lid locking structure for a packaging box according to claim 1, wherein the end of the peripheral wall (7) of the adhesive piece (8) is adhered and the peripheral edge of the top plate (6) is a non-adhered portion.

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