JPH0118501Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a packaging box sealing device, and in particular, the present invention relates to a packaging box sealing device, and in particular, the fold of the inner flap is pressed from above by the tongue of the outer flap formed by the M-shaped notch. This prevents the container from being easily opened, and allows it to be resealed after opening.

<Prior art> Conventionally proposed packaging box sealing devices include, for example, a so-called double-sided lock system as shown in FIG. 1, and a so-called double-sided lock system as shown in FIG. be.

The double-shaped lock system uses flaps A,
Linear notches B and B each having a certain length are formed in A, and the tip of flap C is divided into three parts and a crease D is formed, and the locking pieces at both ends of the three parts are connected to the notches. It has a structure that is inserted into B and B. Further, the V-shaped lock system differs from the D-shaped lock system in that the notches B and B are formed diagonally as shown in the figure.

In all of these conventional methods, when a force is applied to the flap C in the F direction, the crease D lifts up and is easily opened, so a separate adhesive tape or stopper is used to seal it. However, once the package is opened, tape and fasteners must be used again, making the work extremely complicated.

<Purpose> The present invention was developed in view of the above-mentioned drawbacks of the conventional technology, and its purpose is to raise the crease of the inner flap by the tongue of the outer flap formed by the M-shaped notch. To provide a packaging box sealing device which can prevent the packaging from being easily opened by pressing down on it, and can firmly seal it again without using any tape or fasteners after opening.

<Example> The present invention will be explained in detail below based on the figures.

FIG. 3 is an exploded view of the packaging box according to the present invention, and FIG. 4 is an assembled view of the same.

In the figure, 1 to 4 are parts forming the bottom wall of the box, 5 to 8 are parts forming the side walls of the box, 9 and 10 are parts that will become the inner flap, and 11 and 12 are the parts that will become the outer flap.

As shown in the figure, each of the outer flaps 11 and 12 has a pair of notches 13 and a horizontal notch 14 communicating therewith.

On the other hand, at the ends of the inner flaps 9, 10, there are notches 13,
A lock piece 16 is formed to be inserted into the M-shaped notch 15 formed by the lock piece 16. The base of this locking piece 16 is formed to be slightly narrower than the body. Further, fold lines 17, 17 are formed on this inner flap to facilitate folding.

FIG. 4 is an assembly diagram of this packaging box. As shown on the right side of the figure, while folding the inner flap 9 at the crease 17, insert the lock piece 16 at the tip into the notches of the two outer flaps 11 and 12. Insert it into the M-shaped notch 15 formed by the section. The fully inserted state is shown on the left side of the figure; in this state, the tongue piece 18 made by the cut on the outer flap has reached the crease 17 of the inner flap 10.

Therefore, the fold line 17 of the inner flap 10 is pressed down from above by the tongue piece 18,
However, as shown in FIG.
Even if a certain amount of directional force is applied, the fold 17 portion will not be easily lifted, and the sealing effect can be improved.

<Effects> As described above, the packaging box sealing device of the present invention forms an M-shaped notch centered at the abutting portion of the left and right outer flaps, and also forms an M-shaped notch centered at the abutting portion. A crease for bending the inner flap is formed in the inner flap, and a locking piece for inserting and locking into the M-shaped notch is provided at the tip of the inner flap, and the locking piece is inserted into the M-shaped notch. Since the tongue of the M-shaped notch is configured to cover the fold, the tongue can press down on the fold from above and lock it, making it possible to seal the fold without using any tape or fasteners. Furthermore, it is possible to provide a reliable sealing device that eliminates the inconvenience of spontaneous opening even when subjected to a certain amount of force.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing the structure of a conventional device;
Figure 3 is an exploded view of a packaging box that uses the device of the present invention.
FIG. 4 is an assembly diagram of the same, and FIG. 5 is a diagram illustrating the sealing action of the packaging box. 9 and 10 are inner flaps, 11 and 12 are outer flaps, 13 and 14 are notches, 16 is a lock piece, 17 is a fold line, and 18 is a tongue piece.

Claims (1)

[Scope of utility model registration request] At the part where the left and right outer flaps are butted together, an M-shaped notch is formed around the abutting part to provide a tongue piece, and a crease for bending the inner flap is formed at the center of the inner flap. A locking piece for inserting and locking into the M-shaped notch is provided at the tip of the inner flap, and when the locking piece is inserted into the M-shaped notch, the tongue piece of the M-shaped notch A packaging box sealing device, characterized in that the device is configured to cover the fold line.