JPH07237626A - Locking-type packing case - Google Patents

Abstract

PURPOSE:To make a packing case having the same packing capacity as a conventional one with a much less amount of a used packing material than the conventional one wherein gaps are much less likely to occur between flaps when the case is sealed. CONSTITUTION:A locking-type packing case comprises a pair of top front side flap 5 and a top rear side flap 6 provided respectively on opposite end rims of an opening 2 for sealing the opening 2 of the locking-type packing case 1, a first locking piece 106 formed protruding from one side of the respective right and left end rims of both flaps 5, 6, a second locking piece 109 provided on a side corresponding to the first locking piece 106 on the case 1 and fitted into a first slit hole 106a formed on the first locking piece 106 for locking the flaps 5, 6, and so on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock type packaging case.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a product body (not shown) is put in a packing case as shown in FIG.
A lock type packaging case with a lock mechanism that is sealed by the following procedure is well known.

FIG. 4 is a perspective view showing the structure and sealing operation of a conventional lock type packing case. The structure of the conventional lock type packing case will be described below with reference to FIG.

That is, in FIG. 1, an opening 102 for inserting a product is provided in the upper part of a conventional lock type packing case 101, and a right side flap 103 and a left side flap 1 are provided.
Reference numeral 04 denotes a pair of flaps provided at the left and right edge portions of the edge portion of the opening portion 102 so as to be bendable. When the opening portion 102 is sealed, the tip portions of the flaps 103 and 104 are The lengths are close to each other. The top surface upper flap 105 is a flap that is provided at the rear end edge portion of the opening portion 102 so as to be bendable and can cover the entire surface of the opening portion 102. The first locking piece 106 is a front end portion of the top surface upper flap 105. It is a projecting piece for locking that is formed so as to be bendable by projecting a predetermined length in the central portion of the portion 105a, and the central portion on the side of the first locking piece 106 has a central portion when the locking piece 106 is bent. A first slit hole 106a is provided as an elongated hole that is in contact with the bent portion.
Further, a first semi-circular hole 106b, which is a semi-circular hole about the size of a thumb tip, is provided on the upper side flap 105 side, and communicates with the central portion of the first slit hole 106a.

On the other hand, the top-side lower flap 107 is a flap foldably provided at the front end edge of the opening 102, and the front side surface portion 108 forms the front side surface portion of the packing case 101. is there. The second locking piece 109 is
The front side surface portion 108 and the ceiling lower flap 107 are integrally formed from both sides, and the bent portion 10 is provided on the front side surface portion 108 side.
9a, which is configured to be cut and raised, and is formed to be bendable even in the middle thereof (a portion corresponding to the position of the boundary between the front side surface portion 108 and the ceiling lower flap 107) It is a protruding piece of. Second locking piece 10
The position where 9 is formed corresponds to the position where the first slit hole 106a is formed, and the width of the former is formed slightly smaller than the length of the elongated hole of the latter.

Further, the second slit hole 110 is an elongated hole which comes into contact with the boundary line (folded portion) with the front side surface portion 108 on the lower flap 107 side of the top surface, and the second locking piece 109 is cut and raised. Formed through the resulting cut and raised holes,
The slit length is slightly larger than the width of the first locking piece 106, and the slit width is slightly larger than its thickness.

The sealing operation and the unsealing operation of the conventional lock type packaging case having the above-described structure will be described with reference to the same drawing. That is, as the sealing operation, the product is put in the lock type packaging case 101. After that, when folding the right side flap 103 and the left side flap 104 so as to close the opening 102, and then folding the top surface lower flap 107 and further the top surface upper flap 105 so as to overlap each other,
Insert the tip of the first locking piece 106 on the top surface upper flap 105 side into the second slit hole 110 of the top surface lower flap 107, and further hold the top surface upper flap 105 firmly, By inserting the tip of the second locking piece 109 into the first slit hole 106a of the first locking piece 106, a locked state is formed and the sealing is completed.

On the other hand, as the opening operation, the fingertip is applied to the portion of the second locking piece 109 which is visible from the first semicircular hole 106b on the upper flap 105 side, and the second locking piece 109 is slid to the front side, whereby the second locking is performed. The piece 109 is the first slit hole 10
6a is pulled out, the locked state is released, the top surface upper flap 105 can be opened, and the opening is performed.

By the way, in order to form the lock type packaging case 101 having the above-mentioned structure, a corrugated board material of a predetermined size is used, and an unnecessary portion is formed in order to form a predetermined shape based on the development view shown in FIG. The method of cutting off is taken. Here, FIG. 5 is an exploded view of the conventional lock type packaging case shown in FIG.

That is, as shown in the drawing, the maximum dimension in the vertical direction and the maximum dimension in the horizontal direction in the developed view are L (vertical maximum dimension), respectively.
And M (horizontal maximum dimension), in order to create the lock type packaging case 101,
A square corrugated cardboard material 120 having a size of L × M is required at least (excluding a pinching margin or the like required in the manufacturing process).

[0011]

However, in such a structure, as shown in FIG. 5, the right side flap 10 is provided.
3, the length of the top side flap 105 (however, including the first locking piece 106 portion here), the left side flap 104, and the top side lower flap 107 in the vertical direction of the area occupied by each of them in the corrugated board material 120. Saha first
Top flap 10 including the locking piece 106
No. 5 protrudes significantly longer than the other parts, and the total amount of corrugated board material used is substantially larger than that actually required. Therefore, when making the above packaging case, However, there is a problem in that the useless portion of the material that is discarded without being used (the hatched area in the figure) increases.

On the other hand, in such a conventional lock type packaging case 101, the first locking piece 106 and the second locking piece 109 are constructed so as to function as a locking mechanism on the front side surface portion 108 side. Therefore, as shown in FIG. 6, in the left and right side surfaces that do not have the lock mechanism, when the packaging case is sealed, a gap 121 is formed between the upper side flap 105 and the top surface upper flap 105, and dust or dust is unnecessary. It had a drawback that it was easy for things to enter. Here, FIG. 6 is a perspective view showing a sealed state of the conventional lock type packaging case 101.

In consideration of such problems of the conventional lock type packaging case, the present invention has the same packaging volume, can reduce the amount of packaging material used more than before, and can be sealed in the conventional state. It is an object of the present invention to provide a lock type packaging case in which a gap is less likely to occur in the flap, compared to

[0014]

According to the present invention of claim 1, a pair of flaps respectively provided at opposite end edges of the opening for sealing the opening of the packing case, one of the flaps, or one of the flaps. By providing the first locking means formed on one or both sides of the left and right edge portions of both flaps and the portion of the packing case corresponding to the first locking means, by cooperating with the first locking means, It is a lock type packing case provided with the 2nd locking means which locks the said flap.

According to a second aspect of the present invention, the first locking means is a first locking piece formed so as to project from one side or both sides of the left and right edge portions of the flap, and the corresponding portion is It is a side part of the corresponding side of the packaging case, the second locking means is a second locking piece that is a projecting piece, and the joint means that the second locking piece is the flap. Alternatively, the lock type packaging case is to be fitted into the slit hole formed in the first locking piece.

According to the third aspect of the present invention, the pair of flaps are overlapped with each other, and in a part of the overlapping portion, one flap presses the other flap from above and in the remaining portion of the overlapping portion. , The other flap is pressing the one flap from above, and the first locking piece is one of the left and right edge portions of the flap,
It is a lock type packaging case formed at the edge portion on the side that holds other flaps.

[0017]

According to the present invention, a pair of flaps are respectively provided at the opposite edge portions of the opening for sealing the opening of the packing case, and the first locking piece is provided on one or both of the flaps. The second locking piece is formed on one side or both sides of the left and right edge portions, and the second locking piece is provided on a side surface of the packing case on the side corresponding to the first locking piece, and the flap or the first lock is provided. The flap is locked by fitting it into a slit hole formed in the piece.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the structure of a lock type packaging case according to an embodiment of the present invention, and the structure of the present embodiment will be described with reference to this drawing.

Here, the main differences from the conventional lock type packaging case are the places where the lock mechanism is provided, the number thereof, and the shape of the flap on the top side.
Note that the same components as those described in FIG. 4 are designated by the same reference numerals.

In FIG. 1, there is an opening 2 in the upper part of the lock-type packing case 1 of the present embodiment for putting in products, and the right side flap 3 and the left side flap 4 are respectively located at the edges of the opening 2. The flaps are foldable at the left and right edges, and the length from the bent portion to the tip of each flap is longer in the right side flap 3 than in the left side flap 4 and the opening 2 is sealed. When stopped, the tips of the two are formed to have a length such that they substantially abut each other. The front-side front flap 5 and the back-side top flap 6 as a pair of flaps of the present invention are a pair of left-right anti-symmetrical members that are provided at the front and rear end edges of the opening 2 so as to be bendable. Is the flap. At the time of sealing, the tip of the front flap 5 on the top surface is a straight end parallel to the bent portion of the flap (corresponding to the front edge of the opening 2) so that both tips can intersect. The tip shape resembling a substantially "V" shape that is wide open by the portion 5s and the inclined end portion 5t that is inclined to one side and extends in a direction in which the length from the bent portion to the tip portion increases. Is presenting. As for the rear flap 6 on the top surface,
It has the same shape as the tip of the front flap 5 on the top surface.

Further, the slanted end 5t of the front flap 5 on the top surface.
A first locking piece 106 is foldably provided on the right end portion 5a close to. First locking piece 106
Is a protruding piece for locking which protrudes from the right end 5a by a predetermined length, and the first locking piece 10 is provided at the center thereof.
As a long hole that contacts the bent part when 6 is bent,
A first slit hole 106a similar to the conventional one is provided, and further, a first semicircular hole 106b similar to the conventional one, which is in communication with the first slit hole 106a,
It is provided at a predetermined position on the front flap 5 side.
As for the rear flap 6 on the top surface, as with the front flap 5 on the front surface, the first locking piece 10 is placed at a predetermined position.
6. A first slit hole 106a and a first semicircular hole 106b are provided. The first slit hole 106a corresponds to the slit hole of the present invention.

The important point here is the flap 5 on the front side of the top surface.
And the first locking piece 106 on the rear flap 6 on the top surface.
Unlike the conventional ones, the places where are provided are on the left and right side surfaces, and the number is two.

On the other hand, the right side flap 3 is provided with a second slit hole 110 similar to the conventional one at the position corresponding to the position of the first locking piece 8 of the front side front flap 5 at the time of sealing. From the right side flap 3 and the right side surface portion 10 adjacent to the right side flap 3, the second locking piece 1 similar to the conventional one is provided.
09 is configured to be cut and raised. Further, the left side flap 4 is also provided with the second locking piece 109 and the second slit hole 110 at a predetermined position, like the right side flap 3 described above.

With the above structure, the sealing operation of the present embodiment will be described with reference to FIG. Here, FIG. 2 is a perspective view for explaining the sealing operation of the present embodiment.

That is, as the sealing operation, after putting the product in the lock type packing case 1, first, the right side flap 3
And the left flap 4 is bent so as to close the opening 2. The left and right second locking pieces 109 are respectively pulled out from the side surface portions to the outside as shown in FIG.

Front top flap 5 and top rear flap 6
While bending simultaneously, one part (in FIG. 2, the part shaded by the solid line) is on the upper side of the other part (in FIG. 2, the part shaded by the dotted line), and So that one part is below the other,
Cross the tips of both and press down from above.

At this time, the pair of left and right first locking pieces 10 are provided.
6 is inserted into the second slit holes 110 formed in the right side flap 3 and the left side flap 4, respectively, and further firmly pressed.

A pair of left and right first locking pieces 106 are provided.
By inserting the pair of left and right second locking pieces 109 into the first slit holes 106a, the locked state is formed and the sealing is completed. Regarding the unsealing operation, each operation may be performed in the reverse order of the above-mentioned sealing operation.

From the above, the pair of front and rear top flaps has the pair of left and right locking mechanisms, so that such a gap does not occur in comparison with the gap that has been conventionally generated at the left and right positions of the top flap. It can be sealed.

Further, as is apparent from the development view of the lock type packaging case 1 having the above-mentioned configuration shown in FIG. 3, the front end portions 5b and 6b of the front and rear top flaps 5 and 6 are the front ends of the right flap 3. The height in the vertical direction (the direction indicated by arrow H in the figure) of the portion 3a is the same as that of the portion 3a, and it seems to project significantly longer than other portions as in the conventional case described in FIG. It does not become a shape. Here, FIG. 3 is a development view of the lock-type packaging case 1 of the present embodiment.

From this, according to the configuration of this embodiment,
It is possible to further reduce the useless part in the material removal as compared with the conventional method, and therefore, the corrugated board material can be used efficiently, and as a result, the corrugated board usage amount can be reduced.

In the above embodiment, the first slit 106 is used.
Although the location where a is formed is described as being on the side of the first locking piece 106, the location is not limited to this, and may be formed, for example, on the flap side adjacent to the first locking piece.

Further, in the above embodiment, a total of two first locking pieces 106 are formed, one on each of the front and rear top flaps 5 and 6, and correspondingly to the left and right side surfaces. The case where two pieces of the second locking pieces 109 are formed one by one in total has been described, but the present invention is not limited to this. Of course, the number of locking pieces does not matter.

Further, in the above-mentioned embodiment, the pair of front and rear ceiling flaps 5 and 6 have been described as having left-right antisymmetrical shapes, but the present invention is not limited to this and may have different shapes.

In the above embodiment, the second locking means of the present invention has been described as the second locking piece of the protruding piece cut and raised from the side surface of the lock type packaging case. Without being limited to this, for example, a double-sided adhesive tape is previously attached to the back surface of the first locking piece as the first locking means, and the remaining adhesive portion of the double-sided adhesive tape is to be attached in an area portion. Of course it is okay.

[0037]

As is apparent from the above description, the present invention has the same packing volume, can further reduce the amount of packing material used, and can further reduce the amount of packing material used. It has the further advantage that gaps are less likely to occur in the flaps.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a lock type packaging case according to an embodiment of the present invention.

FIG. 2 is a perspective view for explaining a sealing operation of the lock type packaging case of the embodiment.

FIG. 3 is an exploded view of the lock type packaging case of the embodiment.

FIG. 4 is a perspective view showing a configuration and a sealing operation of a conventional lock type packaging case.

5 is a development view of the conventional lock type packaging case shown in FIG.

FIG. 6 is a perspective view showing a sealed state of a conventional lock type packaging case.

[Explanation of symbols]

 1 lock type packing case 2 opening 3 right side flap 4 left side flap 5 front side front flap 5a right side end 5s straight end 5t slanted end 6 top side rear flap 8 first locking piece 10 right side 105 105 top side Flap 106 1st locking piece 106a 1st slit hole 106b 1st semicircular hole 107 Top side lower flap 108 Front side surface part 109 2nd locking piece 109a Bending part 110 2nd slit hole 121 Gap

Claims (3)

[Claims] 1. A pair of flaps, each of which is provided at opposite end edges of the opening for sealing the opening of the packing case, and one or both of left and right end edges of one or both flaps. First locking means formed on the packaging case, and second locking means provided on a portion of the packaging case corresponding to the first locking means and locking the flap by cooperating with the first locking means. A lock type packaging case characterized by being equipped. 2. The first locking means is a first locking piece formed so as to project from one side or both sides of the left and right edge portions of the flap, and the corresponding portion corresponds to that of the packaging case. The second locking means is a second locking piece that is a projecting piece, and that the second locking piece is the flap or the first locking piece. The lock type packaging case according to claim 1, wherein the locking type packaging case is fitted in a slit hole formed in the piece. 3. The pair of flaps are overlapped with each other, one flap presses the other flap from above in a part of the overlapped portion, and the other flap is overlapped in the remaining portion of the overlapped portion. One of the flaps is pressed from above, and the first locking piece is formed at an end of the left and right edges of the flap on the side that holds the other flap. The lock type packaging case according to claim 2.