JP2000118522A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a packaging box from being twisted and deformed when a force in a twisting direction is applied sideward to the packaging box in a sealed condition. SOLUTION: In a corrugated fiberboard packaging box comprising four side plates 1-4, flaps 5-8 for forming a bottom plate continuous to a lower end of the side plates 1-4, and two sets of flaps 9, 11, 10, 12 for forming upper lids continuously provided on upper ends of the side plates 1-4, forward ends of one set of the flaps 9, 11 for forming upper lids located on the inner side among two sets of the flaps 9, 11, 10, 12 for forming upper lids are formed in a stepped manner so as to be bitten by each other with one set of the flaps 9, 11 for forming upper lids closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard packaging box for accommodating, for example, a video deck.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8 to 11, a packaging box made of a corrugated cardboard for accommodating, for example, a video deck is known. This conventional packaging box is provided with four side plates 1-4, bottom plate forming flaps 5-8 connected to the lower ends of these side plates 1-4, and also connected to the upper ends of the side plates 1-4. And upper cover forming flaps 9-12. More specifically, the side plates 1 to 4 are bent into a cylindrical shape so that the packaging box presents a planar rectangular shape, and a stop flap 13 provided at the end of one of the long side sides 4.
Is overlapped with the end of one of the side plates 1 on the short side and fixed with an adhesive or the like, and the flaps 5 and 7 for forming the bottom plate connected to the lower ends of the side plates 1 and 3 on the short side are connected to the side plates 1 and 3. , The bottom plate forming flaps 6, 8 connected to the lower ends of the side plates 2, 4 on the long sides are connected to the bottom plate forming flaps 5, 7.
The bottom end of the flaps 6 and 8 for bottom plate formation is closed with adhesive tape or the like, and a product such as a VCR is stored in the packaging box in this state. A pair of upper lid forming flaps 9 and 11 connected to the upper end of the side plate 3 are bent at a right angle to the side plates 1 and 3, and then another pair of the upper plate forming flaps 9 and 11 connected to the upper ends of the side plates 2 and 4 on the long side. The upper lid forming flaps 10 and 12 are bent so as to overlap the upper set of upper lid forming flaps 9 and 11, and the insertion pieces 14 and 15 provided at two ends at the tips of the other sets of upper lid forming flaps 10 and 12. Into the slits 16 and 17 formed in the center of the pair of upper lid forming flaps 9 and 11 to complete the packaging. Reference numerals 18 and 19 are handle holes formed in the side plates 1 and 3 on the short side.

However, in such a packaging box, the tips of a pair of upper lid forming flaps 9 and 11 located inside and connected to the upper ends of the side plates 1 and 3 on the short side are cut in a straight line. And the side plates 2, 4 on the long side from above.
The other pair of flaps 10 for forming the upper lid connected to the upper end of
12 overlap, and the flaps 10 and 12
The insertion pieces 14 and 15 provided at two places at the tip of the slit 1 are formed in the pair of upper lid forming flaps 9 and 11.
6 and 17, the set of upper lid forming flaps 9 and 11 located on the inner side only come into contact with the straight cut ends of the flaps. There has been a problem that it is easily deformed when a force in a twisting direction is applied.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and is intended to prevent the packaging box from being twisted when a force is applied to the packaging box from the side in a sealed state. It is intended to be.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides four side plates, a bottom plate forming flap connected to the lower end of each side plate, and a top plate connected to the upper end of each side plate. In the packaging box made of a corrugated cardboard made up of two sets of upper lid forming flaps, the tip of one set of upper lid forming flaps located inside of the two sets of upper lid forming flaps is the one end. The gist is that the pair of upper lid forming flaps are formed in a stepped shape so as to mesh with each other in a closed state. Further, the present invention comprises four side plates, a bottom plate forming flap connected to the lower end of each side plate, and two sets of upper lid forming flaps connected to the upper end of each side plate. In a packaging box made of a corrugated cardboard, of the two sets of upper lid forming flaps, two sets of upper lid forming flaps located on the inner side are formed in two slits respectively, and another set of outer lids located on the outer side is formed. The insertion flaps provided at two places are inserted at the front end of the flap for use, and the front end of the insertion flap at the front end of the flap for forming the upper lid of the other set is opposed to each other in a state where the insertion flap is inserted into the slit. Are formed in steps so as to mesh with each other.

As described above, the tips of the pair of upper lid forming flaps located on the inner side are formed stepwise so as to mesh with each other when the pair of upper lid forming flaps are closed, or a pair of upper lid forming flaps is formed. The other end of the upper flap forming flap to be inserted into the slit formed on the upper flap forming flap is stepped so that the inserting pieces facing each other in a state where the inserting piece is inserted into the slit are engaged with each other. By forming it in a shape, it is possible to reliably prevent the packaging box from being twisted and deformed from the side in the sealed state.

[0007]

Embodiments of the present invention will be described below with reference to the drawings (FIGS. 1 to 7). In the drawings, the same reference numerals as those in the conventional example denote the same members.

First, a first embodiment shown in FIGS. 1 to 4 will be described. In the first embodiment, as shown in FIG. , 11 and other sets of upper lid forming flaps 10, 12 with respect to the side plates 2, 4 than the folding lines 20, 22.
Is located slightly above, and after folding one set of flaps 9 and 11 for forming the upper lid, bending another set of flaps 10 and 12 for forming the upper lid from above and overlapping them , Flap 1 for forming the upper lid of the other upper set
0, 12 are not lifted, and the insertion pieces 14, 1
5 is securely inserted into the slits 16 and 17. The slits 16 and 17 into which the insertion pieces 14 and 15 are inserted have bulging portions 1 at the center in the longitudinal direction.
6a and 17a are provided. Further, of the two sets of upper lid forming flaps 9 to 12, the tips of one set of upper lid forming flaps 9 and 11 located inside are engaged with each other when the upper lid forming flaps 9 and 11 are closed. It is formed in a step shape, and prevents the packaging box from being twisted and deformed from the side in the sealed state. 9
Reference numerals a and 11a denote step portions formed at the tips of the pair of upper lid forming flaps 9 and 11, respectively.

The other configuration is the same as that of the conventional example.
Detailed description is omitted. Next, a second embodiment shown in FIGS. 5 to 7 will be described. In the first embodiment, two sets of the upper lid forming flaps 10 and 12
Whereas the insertion pieces 14 and 15 provided at the locations are configured to be inserted into common slits 16 and 17 formed at the center of the pair of upper lid forming flaps 9 and 11,
In the second embodiment, another set of upper cover forming flaps 1
The insertion pieces 14 and 15 provided at two places at the ends of 0 and 12 are inserted into two slits 16 and 16 and 17 and 17 formed on the pair of upper lid forming flaps 9 and 11 respectively. At the same time, one set of upper flap forming flaps 9 and 1 between the insertion pieces 14 and 14 and 15 and 15 at the tips of the other sets of upper flap forming flaps 10 and 12 are provided.
Pressing piece 24 that presses the top end of 1 at the top,
25, and slits 16, 16 and 17, 1
Folding lines 26, 27 are formed on the other pair of upper lid forming flaps 10, 12 to facilitate the insertion of the insertion pieces 14, 14, 15 and 15 with respect to 7.
Further, in the first embodiment, of the two sets of upper lid forming flaps 9 to 12, the tip of one set of upper lid forming flaps 9, 11 located inside is connected to the upper lid forming flaps 9, 11. In the second embodiment, the insertion pieces 14, 14, 15, 15 at the tips of the other sets of flaps 10, 12 for forming the upper lids are formed so as to mesh with each other in a closed state. Of the insertion piece 14, 14 and 15, 15
The insertion pieces 14 and 15 facing each other are formed in steps so as to mesh with each other when inserted into 6, 16 and 17, 17 respectively. 14a, 15
a is a step formed at the tip of the insertion pieces 14 and 15. This prevents the packaging box from being twisted and deformed from the side in the sealed state, as in the first embodiment.

[0010] The other structure is the same as that of the conventional example.
Detailed description is omitted. By the way, in the first embodiment and the second embodiment of the present invention, the length of the four side plates 1 to 4 in the horizontal direction is almost the same for all four side plates, and one of the long sides is one side. When the stop substitute flap 13 provided at the end of the side plate 4 is overlapped with the end of the one side plate 1 on the short side and fixed with an adhesive or the like, the four side plates 1 to 4 are accurately twisted without being twisted. It is necessary to adhere to and fix it. Therefore, in both the first and second embodiments, as can be seen from the developed views shown in FIGS.
The stopper flaps 13 are accurately adhered and fixed to the ends of the side plates 1 using an automatic assembling machine in a state where all the end faces of the flaps 9 to 12 are aligned using an automatic assembling machine. You can do it.

[0011]

As described above, according to the present invention, the tips of the pair of upper lid forming flaps located inside are stepped so as to mesh with each other when the pair of upper lid forming flaps is closed. The ends of the insertion pieces at the ends of the upper lid forming flaps to be formed or inserted into the slits formed in one set of upper lid forming flaps face each other in a state where the inserted pieces are inserted into the slits By forming the insertion pieces in a stepped shape so as to mesh with each other, it is possible to reliably prevent the packaging box from being twisted and deformed from the side in the sealed state.

[Brief description of the drawings]

FIG. 1 is a development view of a packaging box according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a pair of upper lid forming flaps of the packaging box is closed.

FIG. 3 is a perspective view showing a state in which another set of upper cover forming flaps of the same packaging box is closed.

FIG. 4 is a sectional view of the packaging box.

FIG. 5 is a development view of a packaging box according to the second embodiment of the present invention.

FIG. 6 is a perspective view showing a state in which a pair of upper lid forming flaps of the packaging box is closed.

FIG. 7 is a perspective view showing a state in which another set of upper lid forming flaps of the same packaging box is closed.

FIG. 8 is a development view of a packaging box in a conventional example.

FIG. 9 is a perspective view showing a state in which a pair of upper lid forming flaps of the packaging box is closed.

FIG. 10 is a perspective view showing a state in which another set of upper lid forming flaps of the same packaging box is closed.

FIG. 11 is a sectional view of the packaging box.

[Explanation of symbols]

1,2,3,4 Side plate 5,6,7,8 Bottom plate forming flap 9,11 One set of upper lid forming flaps 9a, 11a Stepped portion 10,12 Other pair of upper lid forming flaps 14,15 Insertion piece 14a, 15a Step portion 16, 17 Slit 20, 21, 22, 23 Bending line 24, 25 Pressing piece 26, 27 Bending line

Claims (2)

[Claims] 1. Four side plates, a bottom plate forming flap connected to the lower end of each side plate, and two sets of upper lid forming flaps connected to the upper end of each side plate. In the packaging box made of a corrugated cardboard, of the two sets of upper flap forming flaps, the tips of a pair of upper lid forming flaps located inside are engaged with each other when the set of upper lid forming flaps is closed. A packaging box characterized by being formed in a step shape. 2. Four side plates, a bottom plate forming flap connected to the lower end of each side plate, and two sets of upper lid forming flaps connected to the upper end of each side plate. In a packaging box made of a corrugated cardboard, of the two sets of upper lid forming flaps, two sets of upper lid forming flaps located on the inner side are formed in two slits respectively, and another set of outer lids located on the outer side is formed. The insertion flaps provided at two places are inserted at the front end of the flap for use, and the front end of the insertion flap at the front end of the flap for forming the upper lid of the other set is opposed to each other in a state where the insertion flap is inserted into the slit. Characterized in that they are formed in steps so as to mesh with each other.