JP2000238762A - Carton case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a carton case whose insertion opening hardly generates a break even when a flap is inserted and pulled out repeatedly. SOLUTION: This carton case has a box part and a top cover part comprising two layers, i.e., a top cover inside part 4 and a top cover outside part 2 for covering the box part. The carton case 1 is closed by inserting an insertion flap 3 formed on the top cover outside part 2 in an insertion opening 5 formed in the top cover inside part 4. Both ends of the insertion opening 5 have a curve shape insertion opening relief 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carton case, and more particularly to an improvement of a paper carton case.

[0002]

2. Description of the Related Art A piece of paperboard is cut out and assembled.
Carton cases configured to store articles are widely used. FIG. 9 shows an external view of an example of a conventional carton case. This carton case has a case part and 2
The upper layer is composed of an upper lid portion, and the insertion flap of the upper lid outer portion is inserted into the insertion opening of the upper lid inner portion, so that the lid portion is sealed.

In FIG. 9, 1 is a carton case, 2 is an outer portion of an upper lid, 3 is an insertion flap, 4 is an inner portion of an upper lid, 5 is an insertion opening, 6 is an insertion cutout escape, 7
Is an insertion slit window.

By the way, in the conventional configuration shown in FIG.
For example, FIG. 10 and FIG.
As shown in FIG. 1, only straight cuts or cut grooves are provided. For this reason, when the insertion flap 3 is repeatedly inserted and pulled out, the edges of the insertion notch escape portions 6 at both ends on the insertion port 5 side are easily broken, and if this portion breaks, resealing cannot be performed. There was a problem that the carton case 1 had to be discarded.

[0005]

As described above, in the conventional carton case, both ends of the cut in the insertion opening of the upper cover insertion flap are easily broken, so that insertion and extraction of the flap cannot be repeated so much. There is a problem that it cannot be reused if it is broken.
An object of the present invention is to provide a carton case that solves this problem and does not easily break the insertion opening even if the flap is repeatedly inserted and extracted by a relatively simple method.

[0006]

In order to achieve the above-mentioned object, the present invention has a box portion and an upper cover portion having two layers of an outer upper cover and an inner upper cover which cover the box portion. In a carton case which is sealed by inserting the provided flap means into the insertion means provided on the inner upper cover, a curved cut-out relief means is provided at both ends of the insertion means. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a carton case according to the present invention will be described in detail with reference to the accompanying drawings. In FIG.
1 shows an external view of an embodiment of a carton case of the present invention. FIG. 2 is a detailed view of the insertion flap 3 and the insertion port 5 of the embodiment shown in FIG.

In FIGS. 1 and 2, 1 is a carton case, 2 is an upper cover outer portion, 3 is an insertion flap, 4 is an upper cover inner portion, 5 is an insertion opening, 6 is an insertion cutout escape, and 7 is an insertion cutout window. , 8 are insertion cut grooves, and 9 is an insertion flap lock portion.

The operation of the carton case 1 will be briefly described. When sealing the carton case 1, when the insertion flap 3 is inserted downward into the insertion port 5, since the insertion cutout relief 6 is provided at both ends of the insertion port 5, the vicinity of the insertion port 5 of the inner part 4 of the upper lid is lower. Flex in the direction. When the insertion of the insertion flap 3 into the insertion opening 5 is completed, the bent upper lid inner portion 4 is recovered. At the same time, the insertion cut groove 8 of the insertion flap 3 fits into the insertion port flap lock portion 9 to complete the sealing.

At the time of opening, when the insertion flap 3 is lifted upward, contrary to the time of sealing, the periphery of the insertion opening 5 of the inner portion 4 of the upper lid is bent upward, and the insertion flute 3 of the insertion flap 3 and the insertion cut groove 8 are inserted. The engagement of the mouth flap lock portion 9 is released, and the carton case 1 can be opened.

As described above, according to this configuration, since the round insertion opening cutouts 6 are provided at both ends of the insertion opening 5 of the upper lid inner portion 4, the upper lid inner portion 4 around the insertion opening 5 is flexible. Is born. As a result, no force is applied to the insertion cutout relief 6, and the problem that both ends of the insertion hole 5 are broken can be avoided.

In the above embodiment, the insertion notch relief 6 is a circular notch with an arc portion inside.
As long as the upper cover inner portion 4 around the insertion port 5 is made to have flexibility, the shape of the insertion cutout relief 6 may be any other shape.

Some modifications of this part are shown in FIGS.
Shown in FIG. 3 shows a case where the insertion cutout relief 6 is a round cutout as in the embodiment of FIGS. 1 and 2, but the arc portion is outside.

FIGS. 4 and 5 show a case where the insertion notch relief 6 is U-shaped. 4 and 5, the positions of the cuts with respect to the U-shape are inverted.

FIGS. 6 and 7 show an example in which the insertion notch escape 6 is U-shaped, as in FIGS. 4 and 5, but the angle of the notch is smaller than that in FIGS. Cut near the right angle. 6 and 7, the positions of the cuts for the U-shape are inverted.

FIG. 8 is a development view of the carton case of the present invention. The carton case as shown in FIG. 1 can be assembled by cutting and folding one sheet of paper as a development pattern. This makes it possible to easily mass-produce a carton case in which the insertion opening is hardly broken even if the flap is repeatedly inserted and pulled out.

As described above, according to the present invention, by providing curved cut-out relief portions at both ends of the insertion port,
The elasticity and flexibility of the inner top lid around the insertion port can be improved, and even if the flap is repeatedly inserted and pulled out several times, the risk that this part will be broken and the carton case can no longer be used will be greatly reduced. can do. Also,
The insertion range of the insertion port can be widened, and workability can be improved.

[0018]

As described above, according to the first aspect of the present invention,
The invention has a box portion, and an upper cover portion having two layers of an outer upper cover and an inner upper cover that covers the box portion, and a flap provided on the outer upper cover is inserted into an insertion port provided on the inner upper cover. In the carton case sealed by the above, a curved cut-away portion is provided at both ends of the insertion port. As a result, the elasticity and flexibility of the inner top lid around the insertion port are improved, so that even if the flap is repeatedly inserted and pulled out, a carton case in which the insertion port is unlikely to be broken can be easily realized. Further, the insertion range of the insertion port can be widened, and workability can be improved.

The invention according to a second aspect of the present invention is characterized in that the cut-away portion is formed as an arc-shaped cut. This makes it possible to relatively easily provide curved cut-out relief portions at both ends of the insertion port, which facilitates mass production of the carton case.

The invention according to claim 3 of the present invention is characterized in that the cut escape portion is formed as a U-shaped cut. This makes it possible to relatively easily provide curved cut-out relief portions at both ends of the insertion port, which facilitates mass production of the carton case.

[Brief description of the drawings]

FIG. 1 is an external view of a carton case according to an embodiment of the present invention.

FIG. 2 is a detailed view of an insertion flap and an insertion portion of the embodiment of the carton case shown in FIG. 1;

FIG. 3 is a modified example of an insertion cutout escape portion of the carton case of the present invention.

FIG. 4 is a modified example of an insertion cutout escape portion of the carton case of the present invention.

FIG. 5 is a modified example of the insertion cutout escape portion of the carton case of the present invention.

FIG. 6 is a modified example of the insertion cutout escape portion of the carton case of the present invention.

FIG. 7 is a modified example of an insertion cutout escape portion of the carton case of the present invention.

FIG. 8 is a development view of the embodiment of the carton case shown in FIG. 1;

FIG. 9 is an external view of an example of a conventional carton case.

FIG. 10 shows an example of a conventional insertion cutout escape portion.

FIG. 11 shows an example of a conventional insertion cutout escape portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Carton case, 2 ... Upper lid outer part, 3 ... Insert flap, 4 ... Upper lid inner part, 5 ... Insert opening, 6 ... Insert cutout escape, 7 ... Insert cutout window, 8
... Insertion cut groove, 9 ... Inlet flap lock part.

Claims (3)

[Claims] 1. A box, and an upper cover comprising two layers, an outer upper cover and an inner upper cover, which cover the box, and a flap means provided on the outer upper cover is provided at an insertion port provided on the inner upper cover. A carton case which is sealed by being inserted into a means, wherein a curved notch escape means is provided at both ends of the insertion means. 2. The carton case according to claim 1, wherein said cut escape means is an arc-shaped cut. 3. The carton case according to claim 1, wherein said cut escape means is a U-shaped cut.