JPS5826889Y2 - packaging container - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a packaging container, and allows the lid to be easily attached and fixed to the container body.

Conventionally, in order to attach and secure a lid made of a synthetic resin sheet to a container body made of a synthetic resin sheet, it is possible to fix it partially with adhesive tape, staples, etc., or by hanging a rubber band. The container body and lid are made of thermoplastic resin and the outer edges are heat-sealed, but using adhesive tape, staples, or rubber bands does not work if the lid is frequently reopened and closed. It is inconvenient to handle, and it is difficult to remove the lid if it is heat-sealed, so even if the lid can be removed, adhesive tape, staples, or rubber will be needed to secure the lid again. It requires the use of a band, etc., and once the heat-sealed part is peeled off,
The texture of the surface deteriorated in that area, and the appearance was not good.

Therefore, in this invention, it was possible to eliminate the above-mentioned drawbacks and inconveniences of the conventional method.The structure consists of a container body and a lid made of a synthetic resin sheet, and edges that face each other on the outer periphery of both are made of a synthetic resin sheet. In the section, an outward protrusion is formed on one edge, a tongue piece having a fitting hole is connected to the edge on the other edge, and the tongue piece is folded back toward the protrusion side and fitted. It is characterized by being formed so that the protrusion can be engaged with the matching hole.

Next, embodiments of this invention will be illustrated below with reference to the drawings.

10 is a container body, 20 is a lid body, a synthetic resin sheet,
For example, it is made of polystyrene sheet,
In the illustrated embodiment, the container body 10 and the lid 20 are integrally formed at a portion of the outer periphery via a hinge portion 30, so that they can be opened and closed (see especially FIG. 2).

Then, at the outer peripheral edge facing the hinge part 30,
The edge 21 on the lid 20 side is formed with an upwardly protruding portion 22 as shown in the figure, while the edge 11 on the container body 10 side has a fitting hole 13 that can be fitted with the protruding portion 22. A tongue piece 12 is connected to the edge part 11, and the tongue piece 12 is formed so as to be bendable toward the protruding part 22 side of the lid body 20 from the new bending base end 14.

Then, when closing the lid, pull this tongue piece 12 toward you and fold it back upwards to form a protrusion 22 formed on the edge 21 of the lid body 20.
The lid can be closed and fixed by being engaged with the fitting hole 13.

That is, the inner edge of the fitting hole 13 is strongly pressed against the side wall of the protrusion 22 due to the restoring force of the tongue piece 12 folded in from the newly curved base end 14 to return to the tile shape, increasing the frictional resistance.

Therefore, the lid will not open automatically due to vibration or the like while the container is in use, and the lid can be kept reliably closed at all times.

In particular, if the fitting hole 13 is formed to be slightly smaller than the protrusion 22, it is preferable that the fitting hole 13 is pushed in while being elastically deformed during fitting, thereby allowing more secure fitting.

A foamed sheet can also be used as the synthetic resin sheet forming the container body 10 and the lid 20, and foamed sheets manufactured from polystyrene, polyethylene, polypropylene, polyvinyl chloride, copolymers mainly composed of these, etc. are preferred. Therefore, it is possible to provide a container with excellent cushioning properties, heat insulation properties, etc., and the engagement between the fitting hole 13 and the protrusion 22 when the lid is closed is relatively flexible and easy to deform, which is advantageous.

In addition to the above-mentioned embodiment in which the container body 10 and the lid 20 are integrally molded via the hinge part 30, the container body 10 and the lid 20 are formed of a thermoplastic resin sheet, and a part of the outer periphery is formed between the two. It is also possible to form a hinge part that can be opened and closed by heat-sealing the edges 11 and 21 of the container, and in this case, the container body 10 and the lid body 20 can be made of thermoplastic resin sheets made of different materials. Various implementations are possible, such as forming the lid 20 transparent and the container body 10 opaque, changing the thickness of the lid 20 and the container body 10, or forming the lid 20 with a non-foamed sheet and the container body 10 with a foamed sheet. becomes possible.

Moreover, the lid body 20 and the container body 1 can be connected without providing the hinge part 30.
0 separately, and the lid can be fixed by forming engaging portions consisting of a protruding portion 22 and a tongue piece 12 at two opposing edges on the outer periphery of the two (see Fig. 5). , lid body 2
0 and the container body 10 can be freely attached and detached, and it is also possible to form both from different materials.

Furthermore, it is also possible to form the tongue piece 12 on the lid 20 side and the protrusion 22 on the container body 10 side.

This invention is constructed as described above, and includes a container body 10.
The tongue piece 12 is completed when the lid body 20 is placed on the lid body 20 and the tongue piece 12 is folded back toward the protruding part 22 side while being pulled toward the front, and the fitting hole 13 formed in the tongue piece 12 is secured to the protruding part 22. Due to the restoring force that tries to return to the position, the inner edge of the fitting hole 13 becomes
Since the lid is strongly pressed against the side wall of 2 and the frictional resistance becomes large, the lid will not come out of the secured state due to vibration or the like and open automatically during use, and the lid can be closed reliably.

Furthermore, when opening the lid, by pulling the tongue piece 12 away from the protrusion 22, the engagement state is easily released and the lid can be opened.

These protruding portions 22, tongue pieces 12 and fitting holes 13
etc. have a simple shape, so they do not impair the moldability of the container body 10 or the lid 20, and do not increase manufacturing costs.

Therefore, in a packaging container consisting of a container body 10 and a lid 20 formed of a synthetic resin sheet, the lid 20 can be opened, closed, or attached/detached extremely easily.
This is extremely suitable for cases where it is necessary to repeatedly open/close or attach/detach the device.

[Brief explanation of the drawing]

The figures illustrate the embodiment of this invention, and FIG. 1 is a perspective view, FIG. 2 is a sectional view, FIGS. 3 and 4 are enlarged perspective views before and after engagement, and FIG. The figure is a sectional view of a modified example. 10... Container body, 20... Lid body, 3
0... Hinge portion, 11.21... Edge, 12... Tongue piece, 13... Fitting hole, 2
2... Protrusion.

Claims (1)

[Claims for Utility Model Registration] Consisting of a container body and a lid made of 16-polymer synthetic resin sheets, one edge is formed with a protrusion and the other edge is formed with a protrusion at opposing edges on the outer periphery of the two. A packaging container characterized in that the tongue piece having a fitting hole is connected to the edge part, and the tongue piece is folded back toward the protruding part so that the protruding part can be engaged with the fitting hole. . 2. The packaging container according to claim 1, wherein the container body and the lid are connected at a part of the outer periphery via a hinge part and are formed to be openable and closable. 3. Claim 1 of the above-mentioned utility model registration, in which the container body and the lid are formed separately, and a retaining part consisting of a protruding part and a tongue piece is formed at two opposing edges on the outer periphery of both. Packaging containers listed in section.