JPS5824815Y2 - packing box - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a packaging box mainly made of cardboard that can be repeatedly sealed.

Conventionally, this type of packaging box has been described in Japanese Utility Model Publication No. 18265/1983.

That is, as shown in FIG. 1, a side wall part 1' having a ceiling part 16', a side wall part 2' having a ceiling part 17', a side wall part having a ceiling part 18', and a ceiling part 19'. The provided side wall portions are successively connected, and punched grooves 35', 36' are formed in the ceiling portion 16'.
In the ceiling part 18', punched grooves 37' and 38' are arranged at intervals almost perpendicular to the fold line provided at the boundary between the side wall part and the ceiling part. Punching groove 36'
, 37', and the ceiling part 19' has insert pieces 27' and 28' that can be inserted into the punched grooves 38' and 35'.
There was a packaging box characterized by having 9' and 30' sections.

In this packaging box, the fold lines 33' and 34' are each mountain folded,
Therefore, after inserting the insert pieces 27', 28', 29', 30 into the punching grooves 36', 37', 38', 35', the ceiling parts 17', 19' float up due to the nature of the cardboard box. It had the disadvantage of being easy to remove.

That is, the ceiling parts 17', 19' are the ceiling part 16',
A gap is separated from 18', and ceiling parts 17' and 19'
Not only is it easy to remove, but the insertion pieces 27', 28', and 29'
, 30' are simply punched grooves 36', 37', 38', 35
', so the ceiling parts 16', 18'
When an external force is applied from above to the punched grooves 36', 37',
38', 35' to insert pieces 27', 28', 29',
There was a risk that the 30' would leave.

In this way, the conventional packaging box has ceiling parts 16', 17',
18'.

19' was insufficiently sealed and had the disadvantage of being opened during transportation.

The present invention obviates the above-mentioned drawbacks of the prior art.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a rectangular side wall; 2 is a side wall adjacent to the side wall 1; 3 is a side wall adjacent to the side wall 2 and has the same shape as the side wall 1; 4 is adjacent to the side wall 3; The side wall part has the same shape as .

These side wall portions 1, 2, 3.4 are connected to each other via fold lines 5, 6.7, respectively.

Also, the side walls 1.2, 3.4 have bottom portions 8, 9, 10, respectively.
．． 11 are connected via broken lines 12, 13 and 14, 15, respectively.

16゜17, 18.19 are the ceiling parts provided adjacent to the side walls 1, 2, 3.4, respectively, and are located on the opposite side of the bottom parts 8゜9, 10.11, which are connected to the side walls, respectively. , the ceiling part 16 and the ceiling part 18. The ceiling part 17 and the ceiling part 19 are formed to have the same shape.

There are cut grooves 20, 21.22 on the extension lines of the fold lines 5, 6.7 in the mutual parts of these ceiling parts 16.17, 18.19.
will be established.

The ceiling portions 17, 19 are provided with convex grooves 23, 24 from the ends, respectively, and insert pieces 25, 26, 27, 28 are provided on both sides, respectively.

25 a , 26 a and 27 a , 28 a are respectively tip protrusions that protrude on opposite sides of the convex groove 24 , that is, mutually outward; and 29 , 30 are insert pieces 25 . 26 are the mountain-fold fold lines formed across the outer corner chamfered portions, 31 and 32 are the mountain-fold fold lines formed from both bottoms of the convex groove 24 to the outer corner chamfered portions of the insertion pieces 27 and 28, and 33 and 34 are the respective mountain-fold fold lines. The fold lines 35 and 36 provided at the boundary between the ceiling part 17 and the side wall part 2 and the boundary between the ceiling part 19 and the side wall part 4 are the fold lines 29. and 36 of the mountain fold of the ceiling part 17, respectively.
The mountain-fold fold lines 37 and 38 formed between the inner starting point of 30 and the end of the fold line 33 are the lines 37 and 38 formed between the inner starting point of the mountain-fold fold line 31 and 32 of the ceiling part 19 and the end of the fold line 34, respectively. The mountain-fold fold lines 39, 40, 41.42 formed in between are punched grooves provided at an acute angle θ with respect to the fold line 43.44. Its length is almost equal to the length of the mountain fold lines 32, 29, 30, and 31.

When the insertion piece 28°25.26.27 is inserted into these punching grooves 39, 40, 41.42, the insertion piece 28.2
5.26.27 tip protrusions 28 a , 25 a ,
26a and 27a are engaged with the back surface of the ceiling portion 16.degree. 19 to prevent the insertion pieces 28, 25, 26, and 27 from coming off.

Reference numeral 45 denotes a connecting portion for connecting and fixing the side wall portion 1 and the side wall portion 4 when assembling the packaging box.

The packaging box of the present invention is assembled and used as follows.

As shown in FIG. 3, first, the side walls 1, 2, 3.4 of the packaging box formed and developed as shown in FIG.
, 6.7 in the same direction, and the connecting portion 45 is fixed to the side end of the side wall portion 1 to form a rectangular tube shape.

Next, the bottom parts 8, 9, 10.11 are connected to fold lines 12, 13, 1, respectively.
4. Fold from 15 to the inside of the box, with the bottom parts 9 and 11 on the inside and the bottom parts 8 and 10 on the outside, and attach adhesive tape etc. to the bottom part 8.
, 10 and close the bottom in the usual manner.

This bottom configuration is commonly used.

Next, after the predetermined contents are placed in the assembled packaging box, the ceiling parts 16 and 18 are first folded inward from the fold lines 43 and 44 so that they are in a horizontal position (FIG. 3).

Then, the fold lines 35 and 36 of the mountain fold of the ceiling part 17 are made a mountain fold, and the fold lines 29 and 30 of the mountain fold are made a mountain fold.
into the punching groove 40 and the insert piece 26 into the punching groove 41.

In addition, the insertion pieces 25 and 26 each have a mountain fold line of 35°3.
Punching groove 40.4 while rotating with 6 as the center line of rotation.
1, it can be easily inserted.

In addition, when the insertion pieces 25 and 26 are completely inserted into the punching grooves 40 and 41, the tip protrusions 25a and 26a are connected to the back surface of the ceiling part 16 and 18, respectively, so that the outside is difficult to open. It will be stopped.

Note that the mountain fold lines 37 and 38 of the ceiling part 19 are mountain folds, the mountain fold lines 31 and 32 are mountain folds, and the insertion piece 27 is placed in the punching groove 42 and the insertion piece 28 is placed in the punching groove 39. insert.

In addition, the insertion pieces 27 and 28 are rotated about the mountain fold lines 37° and 38 as the center of rotation, respectively, to open the punching grooves 42 and 39.
It can be easily inserted by inserting it into the .

Note that once the insertion pieces 27 and 28 have been inserted into the punching grooves 42 and 39, the tip protrusions 27a and 28a are engaged with the back surfaces of the ceiling parts 18 and 16, respectively, and are pulled out in a state where the outside is difficult to open. will be stopped.

In this way, the closing of the ceiling opening of the packaging box is completed.

In the packaging box packed in this manner, the ceiling portion 17.19 is in close contact with the ceiling portion 16.18, and the locking piece 25.
26.27.28 tip protrusions 25 a, 26 a
, 27a, and 2Ba are locked to the ceiling part 16.18 in a state that makes it difficult for the outside to open, so even if an external force is applied to the ceiling part, the ceiling part 16.18 will not open, and it will not open easily like a conventional packaging box. Not open.

Therefore, the opening can be repeatedly sealed during repeated transportation, and it has the effect of being stronger and lasting longer than conventional packaging boxes.

Also, the mountain fold lines 35°, 36, 37, and 38 make the sealing and opening operations more natural.

As described above, compared to conventional packaging boxes, the packaging box of the present invention has a mountain-fold line that allows for more natural sealing and opening operations on the ceiling, and the packaging box can be rotated using the mountain-fold line as the center line of rotation. The insert pieces can be easily inserted into the punching grooves, and the protruding ends of the insert pieces that protrude outward from each other can cross the punch grooves and engage with the back surface of the ceiling in a state where the outside is difficult to open. Since it is fixed, the outer side of the insertion piece is difficult to open and is prevented from being removed, so it is highly reliable in transportation and can be used repeatedly for a long period of time, which has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional packaging box, FIG. 2 is a developed view of a packaging box according to an embodiment of the present invention, and FIGS. 3 and 4 are perspective views showing a partial assembly process of the packaging box. FIG. 5 is a perspective view showing the assembled state of the packaging box. 1.2, 3.4...Side wall part, 16.17, 18
．． 19... Ceiling part, 23.24... Broken line, 25.26.27.28... Insert piece, 25
a, 26a, 27a, 28a...
tip projections that project outward from each other, 29, 30, 31.
32... Mountain fold line, 35.36.37. 38... Mountain fold line, 39, 40, 41.4
2... Slanted punching groove, θ... Acute angle,
43.44... Broken line.

Claims (1)

[Scope of utility model registration request] The side wall parts provided with the ceiling part are successively connected, and the inner ceiling part has a pair of punching grooves, and the outer ceiling part has a pair of punching grooves that can be inserted into the pair of punching grooves, and the outer ceiling part has a pair of punching grooves. A pair of insertion pieces, each of which has a protruding end extending beyond the back end of the pair of punched grooves and locks onto the inner ceiling part, are provided at each corner through the fold line of the mountain fold. A mountain fold line is provided between the starting point on the inside of the fold line and the end of the fold line at the boundary between the side wall and the ceiling, and the insert piece is inserted into the punching groove with the mountain fold line as the center of rotation. Each packaging box is removably inserted.