JPH0624335Y2 - Packaging box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a packaging box for containing products such as cosmetics.

[Conventional technology]

In general, products such as cosmetics are sold in a packaging box made of paper or the like. And in such a packaging box,
Usually, as shown in FIG. 5, an insertion portion (5) called a flap is provided so as to be connected to a lid portion (3) that covers the opening portion (8) of the accommodation portion (2).

The insertion part (5) is required to have a certain degree of engagement strength in the state of being inserted into the opening (8), and for that reason, the structure as shown in FIG. 6 is adopted. Can be seen a lot. This is because the cut lines (6) for locking are provided at both ends of the boundary line between the lid part (3) and the insertion part (5), and the insertion part (5) and the lid part
The purpose is to strengthen the engagement between (3) and the opening (8).

However, if the cut lines (6) for locking as described above are provided, the resistance at the time of opening the lid seems to be too strong. Therefore, the cut lines (6) are normally only opened on the back lid (bottom lid) side. It is often used that the front cover (upper cover) side is provided with no opening to facilitate the opening. In addition, in such a configuration, the insertion portion here is designed to be slightly larger than the inner dimension of the accommodating portion in order to provide the front lid side with an engagement strength sufficient to prevent inadvertent opening. . That is, the width of the insertion part (5) provided with the locking cut line (6) described above with reference to FIG.
While the width t is set to be narrower than the width of the lid portion (3) by a dimension t substantially corresponding to the thickness of the box material, the insertion portion (5) is the same as the lid portion (3) as shown in FIG. It is being extended in the width dimension. By doing so, the insertion portion (5) is inserted while rubbing against the inner wall of the accommodation portion (2), and the required engagement strength can be obtained.

[Problems to be solved by the device]

However, the packaging box configured as described above does not cause a problem when the insertion portion (5) is manually inserted into the opening portion (8), but when the automatic cartoner (automatic packaging machine) is set. Trouble occurs when inserting the insertion part (5).

That is, since the strength of the material is different due to the difference in the material of the box and the post-processing method such as the sticking of PVC film, and the sticking accuracy varies due to the error of the sticking width during the box making, the inside of the accommodating part (2) This causes variations in dimensions. However, variations in this internal dimension, that is, variations in the engagement dimension, interferes with the insertion operation of the insertion part (5) in the automatic car toner, and causes a machine stop due to insertion trouble,
It was inevitable that it would significantly reduce productivity.

The present invention has been made in view of the above circumstances, and absorbs the variation in the inner size of the housing portion caused by the material of the box, the post-processing, the laminating accuracy, etc., and the insertion work of the insertion portion by the automatic car toner It is an object of the present invention to provide a packaging box capable of ensuring stable and reliable packaging.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the packaging box of the present invention comprises a polygonal cylindrical housing part and a lid part which is connected from a side part forming the housing part and covers an end opening of the housing part. From the lid portion, an insertion portion that extends into the opening of the accommodating portion is extended, and at the insertion portion, both ends of the boundary line with the lid portion are the starting points toward the tip of the insertion portion. It has a structure in which a pair of notches that are close to each other are provided.

[Action]

With such a configuration, the insertion portion can be inserted extremely smoothly into the accommodation portion opening. That is, the force applied in the width direction of the insertion portion by rubbing against the inner wall of the housing portion is alleviated by the bending action of the end portion of the cut,
The insertion operation of the insertion portion is facilitated.

Then, after the inserting operation, when the both are completely engaged, the cut end portion returns and a sufficient engagement strength is obtained, so that the lid may be immediately opened due to a vibration or the like. Absent.

Therefore, even if the inner dimension of the housing portion, that is, the insertion portion engaging dimension varies due to the material of the box, the post-processing, the laminating accuracy, etc., it is possible to completely absorb the variation due to the above-mentioned action.

〔Example〕

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

FIG. 1 shows a paper box (1) for lipstick as an embodiment of the packaging box of the present invention. This paper box (1) is a box-shaped storage unit.
Both lids (3) (one of which is hidden and invisible) are openably and closably connected to both openings of (2) by a folding structure.

However, the above-mentioned paper box (1) is manufactured by assembling one sheet as shown in FIG. That is, in the figure, (4) is a front part that constitutes the front of the four side surfaces of the paper box (1), and an upper lid part (3a) and a lower lid part are provided at both longitudinal ends of the front part (4). (3b) is linked. And both ends (3a), (3b) are respectively connected to the insertion part (5a), (5b), these insertion parts (5a), (5b), both lids (3a) , (3b) serve as an engaging portion when the opening of the accommodating portion (2) is covered.

In the lower lid portion (3b) of the both lid portions (3a) and (3b), the cut lines (6) for locking are provided at both ends of the boundary line with the insertion portion (5b). , The insertion part (5b) is inserted into the accommodating part (2) to further strengthen the engagement at the time of closing the opening, and once closed, a proper locking action is exerted in the opening direction. Is configured.

On the other hand, as shown in FIG. 3, the insertion portion (5a) connected from the upper lid portion (3a), which is a normal opening side, has a tip end from both end edges of the boundary line with the upper lid portion (3a) as a starting point. A pair of notches (7) are formed which are gradually narrowed toward and are shaped like an inverted figure. This notch (7) has a buffering effect on the force acting in the direction of arrow A when inserting the insertion part (5a) into the accommodation part (2). However, the internal dimensions of the accommodation part (2), that is, the insertion part (5
Even if there is variation in the engagement dimension between a) and the opening, the strength at the time of insertion is alleviated due to the bending of the end of the cut (7), and insertion trouble is prevented.

This cut (7) has a ratio of a linear distance l ₁ from the boundary line with the upper lid part (3a) to the tip of the cut to the extension length l ₂ of the insert part (5a) is 1: 9 to 1: 3. It is preferable to provide the following. That is, if the depth of cut (7) is shallower than this, a sufficient cushioning effect cannot be obtained, while if it is too deep, the insertion part (5a)
This is because the strength of the device itself is inferior, and a problem of catching at the time of insertion operation is caused, so that unstable elements increase.

However, when the packaging box (1) configured as described above is set on the automatic cartner, the insertion portion (5a) of the upper lid portion (3a) and the insertion portion (5b) of the lower lid portion (3b) are both It is smoothly inserted into the storage part (2). Then, the lower lid part (3b) is securely engaged by the locking notch (6), and the upper lid part (3a) is also inserted.
When the bending of the notch (7) provided in the (5a) is restored, the notch (7) engages with the opening of the accommodating portion (2) in a stable state.

In the above embodiment, the lock notch (6) is formed in the lower lid (3b).
Although it is provided, the same configuration as that of the upper lid portion (3a) may be provided without providing this.

Further, the material of the box is not limited to paper, and even if it is a synthetic resin or the like, the same operation and effect can be obtained by adopting the above configuration.

Further, it is also possible to form the housing portion of the box into, for example, a triangular tube shape, extend the insertion portions from the two sides of the triangular lid portion, and provide the insertion portions with the same cuts.

FIGS. 4 (a) to 4 (c) show modified examples of the notch (7) provided in the insertion portion (5a). Also in these examples, the insertion part (5a)
When inserting, the end of the notch (7) bends to adapt to the resistance with the inner wall of the housing (2), so that a smooth insertion operation is possible and sufficient strength is obtained at the time of engagement. Has become.

[Effect of device]

As described above, according to the packaging box of the present invention, even if the inner dimension of the accommodating portion, that is, the insertion portion engaging dimension varies due to the material of the box, the post-processing, the laminating accuracy, etc. The notch provided in has a cushioning effect, and this variation can be reliably absorbed.

Therefore, even if the automatic cartoner is set, the insertion trouble does not occur and the productivity is remarkably improved.

In addition, the dimensions can be easily adjusted in manufacturing the box, and the attendant effect of improving the efficiency in the pasting process can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the packaging box of the present invention, FIG. 2 is an exploded view thereof, FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG.
(A)-(c) are explanatory drawings which show other Examples, and FIGS. 5-7 are explanatory drawings of a prior art. (1) …… Packing box, (2) …… Accommodating part, (3) …… Lid part, (4) …… Front view (side part), (5) …… Inserting part, (6)… … Cutting line, (7) …… Cutting.

Claims (2)

[Scope of utility model registration request] 1. A lid part (3) which is connected from a polygonal cylindrical accommodating part (2) and a side surface part (4) forming the accommodating part (2) and covers an end opening of the accommodating part (2). And an extension part (5) inserted into the opening of the accommodating part (2) from the lid part (3), and the lid part (5) is attached to the insertion part (5). A packaging box characterized in that a pair of cuts (7) are provided so as to approach each other toward the tip of the insertion part (5) starting from both ends of the boundary line with (3). 2. A straight line distance l ₁ from the boundary line between the insertion part (5) and the lid part (3) according to claim 1 to the cut end of the cut (7),
A packaging box in which the ratio of the insertion length (5) to the extension length l ₂ is set within the range of 1: 9 to 1: 3.