JPS6231384Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a packaging container, and more particularly, to a packaging container in which a lid can be easily and reliably attached to a container body.

<Problems to be solved by the prior art and the invention> Conventionally, packaging containers having an engagement mechanism for attaching and fixing the lid to the container body include: (a) either the container body or the edge of the lid; A structure in which a T-shaped tongue piece is formed on one side and a through hole narrower than this T-shaped tongue piece is formed on the other tongue piece (see Utility Model Application Publication No. 50-43002), or ( b) A structure is known in which a tongue piece is formed at a position protruding from the edge of the container body or lid, and a through hole is formed at the other edge (see Japanese Utility Model Publication No. 30888/1988).

However, in the former type, the T-shaped tongue piece is inserted into the through hole by tilting it in the left-right direction, and when used repeatedly, this T-shaped tongue piece breaks and loses its engagement function. There is a risk that it will not be fulfilled.
Also, manufacturing was troublesome.

In addition, with the latter, there is a risk that the protruding tongue may hit surrounding objects during use and cause damage, and the fitting mechanism also requires pushing the side wall of the lid etc. into the container by the protruding width of the tongue. Because the device is structured to be inserted into a through hole, it has disadvantages such as deforming the contents when being inserted.

<Purpose> This invention solves the problems that conventional packaging containers had, and creates a container that is easy to engage, durable for repeated use, securely engages, does not come off naturally, and is easy to manufacture. is intended to provide.

<Means for solving the problem> The structure of this invention for solving the above problem is a packaging container consisting of a container body and a lid formed of a synthetic resin sheet, and the outer periphery of the two is A part of the side wall is recessed inward at the facing edge to form a wide engagement edge, and an engagement hole is formed through the engagement edge of one of the container body or the lid body. The other engaging edge is separated from the other part of the edge via a V-shaped notch,
In addition, an engagement piece is formed that is bendably connected from the back of the edge, and the engagement piece is provided so as to be fit into the engagement hole, and further, the engagement piece has a distal end protruding in the sheet thickness direction. It consists in providing an engaging protrusion that can be locked to the mating edge.

<Function> This device is constructed as described above, and a part of the side wall is recessed inward to form a wide engagement edge, in which an engagement hole and an engagement piece are provided. Therefore, the engaging pieces, etc. should be of sufficient size for the engagement action and strength, so that the engaging mechanisms such as the engaging pieces do not protrude outward from the container and become a hindrance to handling, or may become difficult to handle during use. It will not be damaged by hitting surrounding objects, and there is no need for extra sheet material protruding outward from the edge when forming the container.

Since the engagement piece is formed separately from the other portion of the edge through the V-shaped notch, the engagement piece can be easily bent separately from the other portion of the edge.

Since the engaging piece is provided with an engaging protrusion extending in the thickness direction of the sheet, the engaging piece can be reliably engaged with the engaging hole.

Regarding disengagement, the engagement piece and the engagement protrusion can be freely removed from the engagement hole by simply bending the engagement piece vertically by pushing the engagement piece inward or the like.

The formation of the engagement piece or the engagement hole can be carried out simultaneously with the formation of the entire container by ordinary sheet molding or punching.

<Example> Next, an example of this invention will be illustrated below with reference to figures showing an example.

10 is a container body, and 20 is a lid, both of which are made of a synthetic resin sheet, for example, a foamed polystyrene sheet; in the case of the figure, the container body 10;
The lid body 20 and the lid body 20 are integrally connected on one side of the outer periphery with a hinge portion 30 interposed therebetween, so that they can be opened and closed with each other.

Then, the side walls of the container body 1 and the lid body 20 are partially recessed inward by an appropriate width in the central part of the outer peripheral edge facing the hinge part 30, so that the edge 11 and 21 is provided with an engagement edge that is formed wider inward than the other portions.

An engagement hole 1 formed in an oval shape in the center of one of the engagement edges 11 and 21, or in the case of the figure, the center of the engagement edge 11 on the container body 10 side.
2, and an engagement piece 22 having a rectangular plate shape narrower than the engagement hole 12 is integrally connected to the other edge, in the case of the figure, the engagement edge 21 on the lid 20 side. ing. This engagement piece 22 has a bent portion 23 formed by forming a V-shaped groove on the back surface of the edge at the inner part of the engagement edge 21.
The engaging piece 22 is formed integrally with the other portion of the lid body 20 so as to be freely bendable downward through the engaging piece 22 , and the engaging piece 22 is separated from the other portion of the edge 21 through a V-shaped notch 24 on both sides of the engaging piece 22 . ing. Further, reference numeral 25 denotes an engagement protrusion, the height of which is lower than the depth of the engagement hole 12, and is formed protrudingly by molding the upper surface of the distal end side of the engagement piece 22 into a horizontally elongated shape to bulge in the thickness direction of the sheet. (See Figure 4).

Note that the shapes of the engaging piece 22 and the engaging protrusion 25 are not necessarily limited to those shown in the drawings, and can be changed as appropriate in consideration of the overall shape of the container, its intended use, ease of handling, and the like.

Next, the operation of the engagement mechanism of the packaging container in the above embodiment will be explained.
0, when the engagement piece 22 is bent downward and inserted into the mating engagement hole 12, the engagement piece 22 tries to resiliently restore upward, but the inclined engagement piece 22, the engagement protrusion 25 formed in the thickness direction of the sheet catches on the back surface of the edge 11 at the tip side of the engagement hole 12, so the engagement piece 22 and the engagement hole 12 are securely engaged, and the lid is closed. The body 10 is fixedly attached to the container body 20 (see FIG. 2).

When opening the lid body 10, the engaging piece 22
Once the cover body 10 is bent vertically downward and the lid body 10 is lifted upward, the engagement protrusion 25 can come out upward from the engagement hole 12 without being caught on the edge 11, and the engagement can be released.

In the above description, the engagement hole 1 is provided in the container body 10.
2 and the engagement piece 22 is provided on the lid body 20, but in practice, even if the engagement piece is provided on the container body 10 side and the engagement hole is provided on the lid body 20 side, the same effect as described above can be applied. It can achieve the engagement action of.

In addition to the above-mentioned foamed polystyrene, the synthetic resin sheets forming the container body 10 and the lid 20 include foamed sheets made from polyethylene, polypropylene, polyvinyl chloride, and copolymers mainly composed of these materials, which have cushioning or heat insulation properties. Although it is suitable because of its excellent properties, it is also possible to use a non-foamed sheet of the above-mentioned synthetic resin.

Note that the container body 10 and the lid 20 may be integrally connected via a hinge portion 30 on one side as shown in the figure, or the container body 10 and the lid 20 may be formed separately and heated at one side of the outer periphery. It is also possible to fuse them together to form a hinge part that can be opened and closed. In this case, the container body 10 and the lid 20 can be made of different materials. For example, the lid 20 can be made of a transparent non-foamed sheet. It is also possible to form the container body 10 with a foam sheet.

Further, the hinge portion 30 is not provided at all, and engagement holes 12 are provided in two opposing sides of the outer periphery of the separately formed container body 10 and lid body 20.
By providing an engagement mechanism consisting of the engagement piece 22 and the engagement piece 22, the container body 10 and the lid 20 can be freely removed or attached.

<Effects of the invention> As described above, this invention has an engagement hole on one side and an engagement piece on the other of the container body and the lid, and the engagement piece is bent and fitted into the engagement hole. The engagement protrusion provided on the engagement piece in the thickness direction of the sheet allows the engagement piece and the engagement hole to be reliably engaged, and the lid is very securely attached to the container body. It is easy and reliable.

In addition, to disengage the engagement, simply bend the engagement piece vertically by pushing the engagement piece inward, and the engagement piece and the engagement protrusion can freely come out of the engagement hole and release the engagement. Opening the lid is extremely easy.

Further, the above-mentioned engagement pieces or engagement holes can be easily formed at the same time as the entire container is formed by ordinary sheet forming or punching, and the manufacturing cost is also low.

In particular, at the edges of the container body and lid, a part of the side wall is recessed inward to form a wide engagement edge, and the engagement hole and V-shaped notch are inserted into the edge. Since the engagement piece is formed separately from the other parts of the edge, the engagement piece can be easily bent independently from the other parts of the edge, and the engagement piece etc. are necessary for the engagement action and strength. In addition to being large enough to be used, there is also no need to worry about the engagement mechanism such as the engagement piece protruding outward from the container and getting in the way of handling, or being damaged by hitting surrounding objects during use. Moreover, since there is no need for an extra sheet material protruding outward from the edge when forming the container, it is also economically advantageous.

Therefore, it is possible to provide a container having a structure that is easy to operate, achieves reliable engagement, and is convenient to use as an engagement mechanism between the container body and the lid, and is very practical and inexpensive. It's expensive.

[Brief explanation of drawings]

The figure illustrates an embodiment of this invention,
Figure 1 is a perspective view from below, Figure 2 is a sectional view,
FIG. 3 is an enlarged perspective view of the engagement mechanism when the engagement is released, and FIG. 4 is an enlarged plan view of the engagement piece. 10... Container body, 11... Engagement edge, 12
...Engagement hole, 20...Lid, 21...Engagement edge, 22...Engagement piece, 23...Bending portion, 25...
Engagement protrusion, 30...hinge portion.

Claims (1)

[Scope of utility model registration request] A packaging container consisting of a container body and a lid made of a synthetic resin sheet, in which a part of the side wall is recessed inward at opposing edges of the outer periphery of the two to form a wide engagement edge. An engaging hole is formed through the engaging edge of one of the container body or the lid, and the other engaging edge is formed through a V-shaped notch in the other engaging edge. The part is divided into parts, and an engagement piece is formed that is bendably connected from the inner part of the edge, and the engagement piece is provided so as to be fit into the engagement hole, and furthermore, the engagement piece has a tip. A packaging container characterized by being provided with an engaging protrusion that protrudes in the thickness direction of the sheet and can be locked to the mating edge.