JP6744699B2 - Packaging box - Google Patents

Description

The present invention relates to a packaging box for storing products, and more particularly to a packaging box provided with a lock mechanism capable of securely engaging a lid portion even in the case of a packaging box having a small front width.

Conventionally, in a packaging box of a type in which a lid and a flap piece located inside the lid are used to seal the top opening or the bottom opening for loading and unloading products, a cut is made in the connecting portion of the insertion piece of the lid. Various methods such as so-called slit lock have been devised to engage a part of the lid portion with the flap piece so that the lid portion cannot be easily opened. In particular, as a design requirement for the bottom part, there has been a demand for a structure capable of disassembling the bottom part, with an emphasis on prevention of bottom slippage.

However, in such a slit lock mechanism, there are cases where the lid part cannot be fully engaged, and in particular, if the lid part on the bottom surface is opened, the contents may fall out.Therefore, glue is applied to strengthen the lock. Alternatively, it has been dealt with by making the bottom of the hell or making the structure complicated for sure engagement (Patent Documents 1 and 2).

However, in order to provide the slit lock mechanism, it is necessary to secure the front width of the packaging box to some extent even when the slit length and the connecting portion length are set to the minimum necessary values. Therefore, particularly in the case of a box having a small front width, the slit lock mechanism may not function sufficiently.

In addition, a box provided with a complicated lock mechanism is difficult to assemble and is difficult to handle in terms of productivity and usability. Further, the one having a complicated structure may require an additional blank sheet of raw material, which has been a factor of increasing the manufacturing cost.

Similarly, the gluing of the lid is complicated in the manufacturing process and difficult to dismantle, and thus it is difficult to handle in terms of productivity and usability. Therefore, particularly in the case of a packaging box having a small front width, there are many cases in which the locking mechanism is not provided and the risk of falling out of the bottom is not met.

JP 2011-011751 JP, 2007-331832, A

Therefore, the present invention overcomes the drawbacks of the conventional packaging box, and is provided with a lock mechanism capable of securely engaging the lid portion even in the case of a packaging box having a small front width, and at the same time, a packaging box which can be easily assembled and disassembled Is the task to be provided.

The present invention is to solve the above-mentioned problems, and a lid portion that is connected to a side plate and closes an opening, and a flap that is connected to the side plate and is folded into the inside of the lid portion by at least one of the left and right sides of the lid portion. And a locking piece that projects to at least one of the left and right sides from the insertion piece that is continuously provided on the tip side of the lid, and the locking piece is a box that includes the insertion piece. The insertion piece is formed to be foldable when inserted into the box, and after the insertion piece is inserted into the box, the locking piece released from the folded state is opened by the restoring force of the material so that at least one of the flaps is opened. The packaging box is characterized in that it is positioned along a series of side plates and can be engaged with a flap.

The packaging box according to the present invention is provided with a locking piece that is engageable with the flap piece when the lid is closed on the insertion piece formed on the tip side of the lid, so that the locking function becomes stronger, Furthermore, when opened, it flattens easily and is not bulky when disposed of.

Further, not only a box having a certain size but also a box having a small front width, a good box assembling property at the time of production was obtained, and the workability was improved. Furthermore, dismantling after use has become easier.

Perspective view of the packaging box of the present invention Development view of the packaging box of the present invention (A) An enlarged view showing a state before folding the locking piece of the packaging box of the present invention, (b) An enlarged view showing a state after folding the locking piece of the packaging box of the present invention (A) ~ (F) A diagram showing a series of operations for closing the bottom lid of the packaging box of the present invention The figure which showed the state which closed the bottom lid of the packaging box of this invention, and the locking piece engaged with the flap piece from the inside.

Hereinafter, embodiments of the packaging box of the present invention will be specifically described with reference to the drawings. The present invention is not limited to these embodiments.

FIG. 1 is a perspective view showing the packaging box of the present invention from the back side. As shown in the figure, in the packaging box of the present embodiment, a main body 1 formed in a vertically long rectangular parallelepiped for packaging stick-shaped or pen-type slender products is provided on the back side of a front mount 2, and such a main body is provided. A backing board 3 is attached to the back of the front board 2 beside the section 1. The front cover 2 has a product name, a picture of the product, advertising letters, etc. (not shown), and the back side plate 12, the right side plate 13 and the back mount 3 which form the main body 1 are Explanations, manufacturer's indications, ingredient indications, etc. are respectively described (all are not shown). In this embodiment, the front mount 2 and the back mount 3 are separately provided in addition to the main body 1 for accommodating the product main body as described above, but the packaging box of the present invention is It may be formed of only the main body 1 that stores the.

FIG. 2 is a development view of the packaging box of this embodiment before assembly. As shown in the figure, the main body 1 of the packaging box of the present embodiment includes a left side plate 11, a back side plate 12, and a right side plate 13, which are sequentially formed from a front mount 2 and further, the right side plate 13 has The backing board 3 is continuously provided. To assemble the packaging box of this embodiment, first, the connecting portions of the front mount 2, the left side plate 11, the back side plate 12, and the right side plate 13 are bent, and a part of the front mount 2 and the left side plate 11 are provided on the back side of the front mount 2. The main body 1 of the rectangular parallelepiped formed by the back side plate 12 and the right side plate 13 is formed, and the back mount 3 is attached to the back side margin of the front mount 2.

The main body 1 has a lid and flaps for sealing the upper and lower openings. Specifically, an upper lid 14 that seals the upper opening of the main body 1 is continuously provided at the upper end of the back side plate 12, and further, a tip end side of the upper lid 14 is provided with an insertion piece 15 for insertion into the opening. It is set up. Further, a pair of flaps 16 that are folded into the inside of the upper lid 14 from the left and right are continuously provided at the upper ends of the left and right side plates 11 and 13.

Further, a bottom lid 17 that seals the bottom opening of the main body portion 1 is continuously provided from a lower end of a portion of the front mount 12 that constitutes the front side plate of the main body portion 11, and further, a bottom lid 17. An insertion piece 18 for inserting into the opening is continuously provided on the tip side of the. Further, a pair of flaps 20 that are folded into the bottom lid 17 from the left and right are continuously provided at the lower ends of the left and right side plates 11 and 13. In the present embodiment, both the upper flap 16 and the lower flap 20 are formed as a pair on the left and right sides of the lid, but they may be provided on only one of the left and right sides of the lid. However, in order to further enhance the locking function of the locking pieces 19 described later, it is preferable to provide a pair as in the present embodiment. Further, in the packaging box of the present invention, the position of the side plate provided with the lid and the flap is not limited to the above.

In the packaging box of the present invention, the locking piece 19 projects laterally from the insertion piece 18 extended at the tip of the bottom lid 17. The locking piece 19 is formed so that it can be bent toward the insertion piece 18 side at the connecting portion 181 with the insertion piece 18.

FIG. 3 is an enlarged view of the bottom lid 17, the insertion piece 18, and the locking piece 19 of the packaging box of the present embodiment as viewed from the bottom opening side. As shown in the drawing, the locking piece 19 of the present embodiment is formed so as to project leftward from the insertion piece 18 in the open state. It should be noted that the locking piece 19 may be provided on either the left or right side on the side where the flap 20 is provided, but in order to further enhance the locking function, the locking piece 19 projects to the left and right sides from the insertion piece 18. It is preferable to provide the above. Further, when priority is given to the ease of opening when disassembling the box rather than the lock function, it is preferable to provide it on either the left or right side of the insertion piece 18. Even if the locking pieces 19 are provided on one of the left and right sides of the insertion piece 18 or on both the left and right sides in this way, the blank portion is a portion that was conventionally discarded when the base paper was die-cut, There is no extra manufacturing cost. Further, unlike the conventional slit lock, since the notch is not formed in the connecting portion with the insertion piece, the slit lock can be provided without being limited by the front width of the packaging box.

The locking piece 19 is formed so that it can be bent toward the insertion piece 18 at a connecting portion 191 with the insertion piece 18. Although the shape and size of the locking piece 19 are arbitrary, the locking piece 19 is formed to be smaller than the inserting piece 18 in a state of being folded by the inserting piece 18, and in particular, as shown in FIG. In this state, it is preferable that the side portion 192 on the bottom lid side of the locking piece 19 is formed so as to form a gap with the connecting portion 181. In the present embodiment, such a gap is formed by providing a step portion 193 having a predetermined angle on the bottom lid side portion 192 near the contact point between the connecting portion 191 and the connecting portion 181. Due to this gap, when the locking piece 19 is released from the folded state in the box, the locking piece 19 can be smoothly opened without being caught by the flap 20.

Further, as in the present embodiment, the corners 182 and 194 on the tip side that are the corners of the insertion piece 18 and the locking piece 19 and that face the connection portion 191 in the folded state are formed in an R shape. You may do it. By forming the corners in the R-shape in this manner, the insertion piece 18 and the locking piece 19 can be smoothly pulled out from the box when the bottom lid 17 is opened.

FIG. 4 shows a series of operations for closing the bottom lid 17 of the packaging box of the present invention. First, from the state (A) in which the bottom lid 17 and the flap 20 (the flap piece on the front side is not shown) are opened, the flap 20 is folded toward the lower opening 21 side of the packaging box, and then the locking piece 19 is attached. It folds back to the opening 21 side and folds to the insertion piece 18 (B). Next, the insertion piece 18 is folded (C) at the connecting portion 181 with the bottom lid 17, and the insertion piece 18 and the locking piece 19 in the folded state are inserted into the gap 201 between the flap 20 and the rear side plate 12. Yes (D). Then, when the insertion is advanced and the insertion piece 18 and the locking piece 19 are completely inserted into the packaging box (E), the folded locking piece 19 is released from the folded state and the restoring force of the material is restored. Then, it becomes a shape that can be engaged with the flap 20 (F).

FIG. 5 shows a state in which the bottom lid 17 of the packaging box of the present invention is closed and the locking piece 19 can be engaged with the flap 20 from the inside of the packaging box. As shown in the figure, the locking piece 19 which is released from the folded state with the insertion piece 18 and is about to be restored to the original position is located along the left side plate 11 where the flap 20 is continuously provided. And an L-shape are formed in a plan view. As a result, when the bottom lid 17 is opened, the bottom lid side portion 192 of the locking piece 19 engages with the inside of the flap 20 that is connected to the left side plate 11, so that the bottom lid 17 is opened. It becomes possible to lock by blocking.

It should be noted that when the locking pieces 19 are provided on both the left and right sides of the insertion piece 18, the locking pieces 19 are double-folded from the left and right with respect to the insertion piece 18 and inserted into the box. There is no difference in the assembly method. After being inserted into the box, the locking pieces 19 open to the left and right of the insertion piece 18, and thus form a U-shape in plan view with the insertion piece 18. As a result, the two locking pieces 19 are locked with the left and right flaps 20, and the locking function is further strengthened.

When the bottom lid 17 of the packaging box of the present invention is opened, the bottom lid 17 is opened from the side of the bottom lid 17 on the side facing the locking piece 19 in the closed state. As a result, first, the insertion piece 18 is pulled out of the box from the portion farthest from the locking piece 19. At this time, since the corner portion 182 of the insertion piece 18 is formed in an R shape, the insertion piece 18 can be smoothly pulled out. When the insertion piece 18 is pulled out of the box in this manner, the locking piece 19 is also pulled out of the box in a form of being pulled by the insertion piece 18. In this way, the opening operation of the bottom lid 17 is completed.

As described above, regarding the opening/closing operation of the lid portion in the packaging box of the present invention, no special work is required other than folding the locking piece 19 into the insertion piece 18 and inserting it into the box when closing. Also, since the opening can be performed from any side of the bottom lid 17, the packaging box can be easily assembled and disassembled.

The material of the packaging box of the present invention is not particularly limited as long as it is a material used for general packaging boxes, but when the locking piece 19 is folded into the insertion piece 18 and released from that state, It is preferable to use paper, synthetic resin, or the like that has a restoring force to restore the state. Specifically, paper such as Japanese paper, high-quality paper, medium-quality paper, coated paper, cardboard, cardboard, coated cardboard, coated cardboard, and vapor-deposited paper coated with aluminum or aluminum vapor-deposited on synthetic resin. And synthetic resins such as transparent synthetic resin such as polypropylene and polyethylene tephretate (PET) and opaque synthetic resin can be appropriately used.

Further, in the packaging box of the present embodiment, a locking piece 19 is provided as a locking mechanism for the bottom lid 17, and the upper lid 14 is provided with a slit 151 of a cut at the connecting portion with the insertion piece 15, and the insertion piece 15 is A so-called slit lock mechanism is adopted in which the slit 151 portion is locked by being locked to the flap 16 after being inserted into the box, but the lock mechanism of the upper lid 14 is the same as that of the bottom lid 17. A similar locking piece may be provided on the insertion piece 15 that is connected to the upper lid 14.

Further, in the packaging box of the present invention, the slit lock adopted as the lock mechanism of the upper lid 14 may be used together with the lock mechanism by the locking piece 19. That is, it is possible to form a cut having a predetermined length in the connecting portion 181 of the bottom lid 17 and the insertion piece 18 of the present embodiment, and to form the flap 20 so that the flap 20 can be locked in the slit. When the locking piece 19 and the slit lock are used together as described above, such a slit may be provided by making a cut from the side (the right side in FIG. 3) facing the side where the locking piece 19 is provided. preferable.

1 ... Main body 2 ... Front mount 3 ... Back mount 11 ... Left side plate 12 ... Back side plate 13 ... Right side plate 14 ... Top lid 15 ... ... Insert 16 ... ... Flap 17 ... ... Bottom lid 18 ... Insertion piece 19 ... ... Locking piece 20 ... ... Flap 151 ... ... Slit 181 ... ... Connecting part 182 ... ... Corner part 191 ... ... Connecting part 192 ... ... Side part 193 ... ... Step part 194 ... ... Corner part 201 …Gap

Claims (3)

A bottom box (17) is a packaging box having a lid part connected to the side plate and closing the opening, and a flap connected to the side plate and folded into at least one of the left and right sides of the lid part to the inside of the lid part. Is provided with a locking piece (19) projecting to at least one of the left and right sides from the insertion piece (18) continuously provided on the tip side of the insertion piece (18). When the insertion piece (18) is inserted into the box, the locking piece (19) is formed so as to be foldable and released from the folded state after the insertion piece (18) is inserted into the box. When opened, at least one of the flaps (20) is positioned along the side plate (11) continuously provided to be engageable with the flap (20), and the locking piece (19) and the insertion piece (18) A step portion (193) formed obliquely on the side portion (192) of the bottom lid near the contact point between the connection portion (191) and the connection portion (181) of the bottom lid (17) and the insertion piece (18). Since the locking piece (19) is folded, the bottom lid side (192) is between the bottom lid (17) and the connecting portion (181) of the insertion piece (18) by providing the locking piece (19). A packaging box characterized in that it is formed so as to create a gap in . The packaging box according to claim 1, wherein the locking piece (19) is provided so as to project to the left and right sides of the insertion piece (18). A corner portion of the insertion piece (18) and the locking piece (19), which is a corner on a tip side facing a connecting portion between the locking piece (19) and the insertion piece (18) in a folded state. The packaging box according to claim 1 or 2, wherein all the parts are formed in an R shape.

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