JPH041077Y2 - - Google Patents

Description

[Detailed description of the invention] <Technical field> This invention relates to a packaging container. For more details,
The present invention relates to a packaging container made of a synthetic resin sheet that includes a container body and a lid.

<Background and Prior Art> Conventionally, as a means for attaching and fixing the lid to the container body of the above-mentioned synthetic resin sheet packaging container, uneven portions that can be fitted to each other have been formed on the overlapping edges of the two. It is common that it is formed. The fixing means using such unevenness can be easily constructed by sheet molding, can withstand repeated use, and is suitable as a simple fixing means.

However, since the above-mentioned concavo-convex portion has an undercut portion, it cannot be formed with a sufficient level difference during the molding process, and the fit between the concave portion and the convex portion becomes shallow, resulting in easy disengagement during transportation or other handling. There's a problem.

For this reason, in order to securely fix the lid, it is necessary to partially fix the lid with adhesive tape or staples, or to attach a rubber band, which causes inconvenience in handling.

<Purpose> This invention was made in view of the above problems, and the purpose is to provide a packaging container whose lid can be fixed simply and reliably.

<Structure> The structure of the packaging container of this invention to achieve the above purpose consists of a container body and a lid made of a synthetic resin sheet, and the upper edge of the container body is folded outward as an edge. While formed,
The lower edge of the lid is formed as a hanging edge that can be placed over the folded edge, and both edges are formed with concave and convex portions that can be fitted into each other as fixing means forming portions of the lid. One or both of the edges is provided with a fixing means for the lid by distorting the edge of the lid when the lid is attached to the edge adjacent to the edge provided with the fixing means forming part. It is characterized by forming a bulge that deforms the forming portion so as to push it inward.

<Example> Next, an example of this invention will be described below with reference to the drawings.

A shows the entire packaging container, of which 1
0 indicates the container body, and 20 indicates the lid. Both the container body 10 and the lid 20 are made of synthetic resin sheets molded into a predetermined shape, and in the case of the figure, the container body 10
The cover body 20 is formed from a thin non-foamed polystyrene sheet. The lid body 20 has a hinge portion h on one side of the outer periphery.
It is attached to the container body 10 via.
The hinge part h is constructed by heat-sealing the tip of a winding part h extending around the outer periphery of the lid body 20 to one side of the container body 10 or bonding it with adhesive. The portion h' allows the lid 20 to be repeatedly opened and closed with good durability.

Further, the upper edge of the container body 10 is formed as an outwardly folded edge 11 and reinforced, while
The lower edge of the lid 20 is formed as a hanging edge 21 that can match the folded edge 11 of the container body 10.

On both sides of the edges 11a and 21a of the container body 10 and the lid 20 facing the hinge part h, uneven parts 12 and 22 which can be fitted together as fixing means forming parts of the lid 20 are formed. Furthermore, an inwardly bulging portion 23 is formed at a predetermined position on the tip side of both side edge portions 21b adjacent to the edge portion 21a provided with the uneven portion 22 of the lid body 20. This bulge 2
3 is formed at such a height that it can come into contact with the side edge 11b of the container body 10 and push the lid side edge 21b outward when the lid 20 is attached. Reference numeral 24 denotes an auxiliary bulge formed to prevent the lid 20 from becoming unbalanced due to the formation of the bulge 23.

With the above configuration, the lid 20 can be attached to the container body 10.
When it is applied along the folded edge 11 of the lid, both side edges 21b are elastically pushed outward by the swollen portion 23, and the entire edge 21 is distorted, causing the convex portion 22 as a lid fixing means to be pushed out. The edge 21a on the formed side is subjected to an inward deformation action (see FIG. 5).
For this reason, the convex portion 22 of the lid 20 deforms so as to be pushed inward and enters deeply into the recess 12 on the container body 10 side, and the two are tightly fitted, so that the lid 20 can be securely fixed. (See Figure 6).

Note that the synthetic resin sheet constituting the container A can be formed of a resin sheet other than the polystyrene sheet mentioned above, and the lid 20 may be formed of a foam sheet, and even when it is formed of a non-foam sheet, it can be made of a transparent sheet. This allows the contents to be seen through, making it particularly suitable as a container for storing product samples.

Furthermore, the bulge 23 for pushing the edge of the lid 20 outward may of course be formed not only on the lid 20 side but also on the container body 10 side or both (see FIGS. 7 and 8). In addition, various design modifications may be made, such as forming the side edge 11a of the container body 10 into a shape that widens toward the end with the tip slightly wider than the lid 20, and configuring the tip side as a bulge. I can do it.

Furthermore, the shape of the container is not limited to the rectangular shape shown in the drawings, and can be applied to containers with planar shapes such as squares, hexagons, and other polygons, as well as circles, ellipses, etc. It can also be applied to a completely open type container that does not have a hinge part h.

<Effects> As described above, according to the packaging container of this invention, the edge of the lid is distorted by the bulge formed on either the container body or the lid, or both, and the lid is fixed. Since the means forming part is deformed so as to be pushed inward, the concave and convex part as the fixing means forming part can be tightly fitted, and the conventional problem of the lid being easily unfastened can be solved. become.

Therefore, it is possible to provide a very convenient packaging container, which eliminates the troublesome effort of attaching tape or rubber bands.

[Brief explanation of drawings]

The figure shows an example of this invention.
The figure is a perspective view, Figure 2 is a sectional view of the main part when the lid is opened, and Figure 3 is a sectional view of the main part when the lid is opened.
The figure is a perspective view of the main parts when the lid is opened, FIG. 4 is a sectional view seen from the plane side when the lid is closed, FIG. FIGS. 7 and 8 are cross-sectional views showing the assembled state, and FIGS. 7 and 8 are cross-sectional views viewed from the plane side, showing modified examples of the bulging portion. 10... Container body, 11... Folded edge, 1
2, 22... Uneven part as a lid fixing means, 20
... Lid body, 21 ... hanging edge, 23 ... bulge,
A...Container, h...Hinge part.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a container body and a lid made of a synthetic resin sheet, the upper edge of the container body is formed as an outwardly folded edge, while the lower edge of the lid is It is formed as a hanging edge that can be placed over the above-mentioned folded edge, and both edges are formed with uneven parts that can be fitted into each other as a fixing means forming part of the lid body, and either one of the edges Or both parties:
An edge adjacent to the edge on which the fixing means forming part is provided is deformed so as to distort the cover edge and push the fixing means forming part of the cover inward when the cover is attached. A packaging container characterized by forming a bulge. 2. Claim 1 of the above utility model registration, in which the lid is attached to the container body via a hinge part.
Packaging containers listed in section. 3. The packaging container according to claim 1, wherein the container body is made of a foamed sheet and the lid is made of a non-foamed sheet.