JPS607292Y2 - Packing box opening closure structure - Google Patents

Description

[Detailed description of the invention] The present invention is an opening sealing method for packaging boxes that can repeatedly seal the lid and securely maintain this sealed state without using so-called studs or tape seals. It's about structure.

For example, the opening sealing structure of a packaging box made of cardboard or the like can be achieved by bending the ceiling pieces extending at the top of the left and right side walls so that their tips abut each other, and then cutting grooves into each of these ceiling pieces. It is known that the groove is sealed by inserting the ends of the ceiling pieces extending into the upper part of the front and rear walls, respectively, into this cut groove. There is a gap at the tip of the piece, which has the disadvantage that dust can easily enter through this gap.Furthermore, ceiling pieces that are simply butted together in this way tend to misalign, so there is no cut groove. It was difficult to insert the other ceiling piece into the ceiling, and it was also difficult to maintain the closed state, so it was impossible to securely close the ceiling without using studs or tape seals.

The present invention has been made to provide an opening closing structure that eliminates the drawbacks of the conventional structure, such as the formation of gaps and the difficulty of inserting into the cut groove.

The present invention will be explained below by way of an embodiment with reference to the drawings.

FIG. 1 is a developed view, in which 1 is a rectangular front wall, 2 is a right side wall adjacent to the front wall 1, 3 is a rear wall adjacent to the right side wall, and 4 is a rear wall. This is the left side wall adjacent to the section 3, and the front and rear side walls 1 and 3 and the left and right side walls 2 and 4 are formed to have the same shape.

Each of these side walls 1. 2. 3. 4 is a broken line 5,
6.7, and furthermore, there is a fold line 8 on the left side wall 4.
A connecting piece 9 is provided for connecting to the front wall 1 via the connecting piece 9.

In addition, bottom portions 14, 15, 16 are attached to the front, rear, left and right side walls 1.2.3.4 through fold lines 10, 11, 12, 13 at the bottom.
17 are extended, respectively, and folded lines 18, 19, 20 .
21 through the front, rear, left and right ceiling pieces 22, 23, 24, 2
5 are extended respectively.

Front and rear pot bottoms 14, 15, 16, 17 and each ceiling piece 22
, 23, 24, and 25, the respective boundaries are broken lines 5. 6.7
Notch grooves 26, 27, 28, 29, 30.3 on the extension line of
1 so that it can be folded easily.

The left and right ceiling pieces 23.25 are dimensioned such that their ends meet when they are bent inwardly along the fold lines 19.21, and furthermore, the right half of the left and right ceiling pieces 23.25 has a The overlapped pieces 32 and 33 are extended.

Then, cut grooves 34 and 35 are stabbed approximately in the center of the right half of the overlapped piece portions 32 and 33 at a required inclination angle with respect to the cut grooves 29 and 31.

On the other hand, the length of the front and rear ceiling pieces 22 and 24 is the length of the left and right ceiling pieces 2.
3. The dimensions are the same as those of 25, and tongue pieces 36 and 37 are extended to the left half of each.

These front and rear ceiling pieces 22 and 24 have transverse fold lines 38.
．． 39, and the right corner is chamfered in an arc shape.

Next, the assembly of this packaging box will be explained.

First, the folding lines 5, 6, 7.8 are sequentially bent in the same direction as shown in Figure 2, and the connecting piece 9 is fixed to the side end of the front wall 1 to form a rectangular tube shape, and then the bottom portions 14, 15 are bent. , 16, and 17 are bent inward toward each other along fold lines 10, 11, and 12, and 13, respectively, as shown in FIG. 3, and the bottom wall is constructed and fixed.

Place the packaging box assembled in this way with the bottom wall facing down and store the specified items through the opening, fold the left and right ceiling pieces 23 and 25 inwardly along the fold lines 19 and 21, and stack them as shown in Figure 4. The pieces 32 and 33 cover the tips of the other left and right ceiling pieces 23 and 25, and the side edges 3 of the stacked pieces 32 and 33
By engaging 2a and 33a with each other, the positions of the left and right ceiling pieces 32 and 33 are fixed.

In this state, bend the front and rear ceiling pieces 22 and 24 inward at the fold lines 18 and 20, and then bend them at the fold lines 38 and 39 to form the tongue piece 3.
6.37 are inserted into the cut grooves 34 and 35, respectively, and sealed as shown in FIGS. 5 and 6.

As described above, the opening sealing structure of the present invention has a pair of ceiling pieces whose tips are butt-shaped by bending them inward, and the overlapping pieces extend oppositely from the ends of the ceiling pieces to abut each other. The covered state is fixed by engaging the side edges of the stacked pieces with each other without creating a gap at the ends, and in this state, the tongue piece provided on the other ceiling piece is attached to the ceiling piece. It can be easily sealed by inserting it into a cut groove provided in the groove, and has the advantage that it is easy to seal, and there is no gap in the sealed state, and the seal can be reliably maintained.

[Brief explanation of the drawing]

The figures relate to one embodiment of the present invention, and Fig. 1 is a developed plan view, Figs. 2 to 5 are perspective views showing the order of assembling the packaging box, and Fig. 6 is a state in which the ceiling piece is sealed. The perspective view and FIG. 7 are sectional views of the same. 1...Front side wall part, 2...Right side wall part, 3
. . . Rear side wall portion, 4 . . . Left side wall portion, 5.
6. 7. 10. 11, 12. 13...
...Folded line, 14. 15. 16. 17...
Bottom, 18, 19, 20, 21... Broken line, 22
...Front ceiling piece, 23... Right ceiling piece, 24... Rear ceiling piece, 25... Left ceiling piece, 32, 33・・・・・・Overlapping piece part, 34, 35
・・・・・・Cut groove, 36° 37・・・Tanguage piece, 3
8, 39... Broken line.

Claims (1)

[Scope of utility model registration request] In a packaging box in which a ceiling piece is provided at the top of each of the front, rear, left, and right side walls that are connected via a fold line, and a bottom is provided at the bottom via a fold line, the ceiling pieces are the opposite left and right ceiling pieces. The tips of the parts are butted, and overlapping pieces are extended in a part of the tips to face each other, and the left and right ceiling pieces are cut at a required angle of inclination with respect to the front and rear walls. On the other hand, create a transverse fold line on each of the front and rear ceiling pieces, form a tongue piece at the tip, bend the left and right ceiling pieces inwardly, and then fold the front and rear ceiling pieces inwardly. An opening closing structure for a packaging box that is configured to be bent and sealed by inserting a tongue piece into a cut groove.