JP3032416U - Packaging containers - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a fitting state in which a lid can be easily attached and detached, and once the lid is fitted, the lid does not come off due to a delusion and can be easily performed when the lid is removed. To provide the resulting packaging container. A container body A formed from a synthetic resin sheet
The container body A has a fitting edge portion 11 formed outside the storage recess 10, and the fitting edge portion 11 is located below the outer upper end of the curved edge portion. The front surface is formed into an undercut shape that enters inward, and the back surface is formed into a substantially vertical shape. The lid B has a fitting portion 21 formed on the outside, and the fitting portion 21 is the container. The fitting portion 21 of the lid B is fitted to the fitting edge portion 11 of the main body A.
At least a portion of which is configured to engage the undercut-like portion 12.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a packaging container. And, more specifically, the present invention relates to a packaging container in which a lid suitable for a take-out container or the like is difficult to remove.

[0002]

[Prior art]

 Conventionally, for a packaging container in which a lid is suitable for use as a packaging container, particularly as a take-out container, etc., for example, a container body is provided with a lid that can be fitted inside. A so-called internal fitting type in which the step portion is formed inward of the outer curved edge portion has been adopted as a combination in which the lid body can be easily housed in the container body (for example, Japanese Utility Model Publication No. 61-119910).

Further, a flange is provided on the outer periphery of the opening edge of the container body, and a flange engaging protrusion is provided on the inner periphery of the opening edge of the lid body so that the container body and the lid body can be attached and detached. It is disclosed in No. -78184, No. 2-141350, Jitsukaihei.

[0004]

[Problems to be solved by the device]

 However, once the inner-fitting lid is fitted into the container main body, it is difficult to remove it, but when removing the lid when removing the contents, the lid is removed by expanding the container main body to the outside. It had to be operated, and it was extremely difficult to operate. Also, when the flange of the container body and the protrusion of the lid body are engaged, when the container body is made of expanded polystyrene and the lid body is a non-foamed resin sheet, the polystyrene foam is superior in rigidity, so once fitted When I put it in, there was a problem that it was difficult to remove.

In view of the above, according to the present invention, the lid body can be easily attached and detached, and after the lid body is fitted, the lid body does not come off by mistake, and the lid body can be easily detached. It is intended to provide a packaging container that can obtain

[0006]

[Means for Solving the Problems]

 A packaging container according to the present invention, which can achieve the above object, comprises a combination of a container body formed of a synthetic resin sheet and a lid, as described in claim 1, Has a fitting edge formed on the outer side of the accommodating recess. The fitting edge is formed below the outer upper end of the curved edge, and the front surface is inwardly cut inward and the back surface is formed. Is formed in a substantially vertical shape, the lid body has a fitting portion formed on the outside, the fitting portion is fitted to the fitting edge portion of the container body, and at least a part of the fitting portion of the lid body is formed. Is characterized in that it is configured to be engaged with the undercut-shaped portion.

According to the structure of the first aspect, the lid body can be a so-called outer fitting type instead of the inner fitting type, and at least a part of the fitting portion of the lid body is a fitting edge portion of the container body. Since it can be engaged with the undercut-shaped part of the container, once it is fitted, it may unintentionally come off from the container body at the action position such as vibration during transportation unless a releasing force is applied to remove the lid. It is not suitable as a take-out container.

Next, as described in claim 2, the lid body is fitted to the fitting portion on the outer side of the lid body so as to engage with the undercut portion of the fitting edge portion of the container body. If the inward projection is partially formed, the engagement state becomes good. Further, as described in claim 3, when the container body is formed of a foamed resin sheet and the lid body is formed of a non-foamed resin sheet, the lid body is a transparent product. In addition to being convenient for seeing through the contents, the container body can hold a relatively large thickness, and in particular, the lower undercut portion of the fitting edge can be formed only on the front surface and the back surface can be formed vertically. It was possible to reduce the die-cutting load due to the upper undercut-shaped portion and enable molding.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments of the present invention will be described below with reference to the drawings. 1A shows a container body and B shows a lid body. FIG. 1 shows a state before they are fitted together, and FIG.

The container main body A is formed of a foamed polystyrene sheet or a known foamed sheet of synthetic resin, and the lid B is formed of a non-foamed resin sheet such as a high-impact polystyrene sheet. In particular, when the lid body is made of a transparent non-foamed resin sheet, the lid body B is suitable because the contents stored in the container body A can be observed through. The container body A is formed with a storage recess 10 in the center and a fitting edge 11 rising outward from the storage recess 10. In the case of the drawing, the fitting edge is formed. Around 11 is formed an inner wall portion 13 that rises and an outer wall portion 14 that descends to the same height as the bottom portion 15 of the storage recess 10, and the inner wall portion 13 and the outer wall portion 14 move downward so as to have a sense of stability. It has an expanded shape. The bottom 15 may be a raised bottom as long as the container body A is made of a thick material and can withstand the weight of the product to be stored in the storage recess 10. Below the apex, which is the outer upper end, of the fitting edge portion 11, an undercut-shaped portion 12 having a front surface inwardly formed and a back surface formed as a substantially vertical portion 16 are formed. ing.

Next, in the lid B, the center 25 is bulged high and a fitting portion 21 is formed on the outer side. The fitting portion 21 is elastically fitted to the fitting edge portion 11 of the container body A. An inward projection 22 that is fitted and becomes at least a part of the fitting portion 21 can be engaged with the undercut portion 12. In the case of the circular lid B as shown in the figure, it is convenient to form the protrusions 22 at intervals at three or more positions on the peripheral surface so that the engagement state can be partially strengthened.

In the present invention, the container body A and the lid B are engaged with each other from the upper portion to the central portion of the outer wall portion 14 of the container body A, and the outer wall portion 14 is inclined as shown in FIG. When provided, the container body A and the lid body B can be easily removed by sliding the bottom surface of the outer wall portion 14 with the thumb along the inclination. Furthermore, when a non-foamed polystyrene sheet or a non-foamed polystyrene film is laminated on a foamed polystyrene sheet, it is slippery and the container body A and the lid B can be easily removed as necessary.

When the container body A is a relatively thick expanded polystyrene sheet, the undercut portion 12 does not appear on the back surface even if the thickness portion of the sheet is compressed and thinned, or even if it appears. There is an advantage that it is possible to prevent a slight decrease in strength due to bending. In the above-described embodiment, the circular packaging container is illustrated, but the implementation is not limited to this, and the packaging container may have a rectangular shape or any other external shape. Further, in the container body 10, the outer wall 14 and the bottom portion 15 of the storage recess 10 are at the same height, but the bottom portion 15 may be placed on a floating bottom in a higher position.

[0014]

[Effect of device]

 As described above, according to the present invention, of the fitting edges of the container body, the surface is formed in the shape of an undercut below the outer upper end, and the back surface is formed in a substantially vertical shape. It has a shape that reduces the extraction load. Further, since at least a part of the fitting portion of the lid body can be engaged with the undercut-shaped portion, a very stable fitted state of the lid body can be obtained, and the lid body Since it is a so-called external fitting method, it can be easily attached to and detached from the container body, and a suitable product as a takeout container can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a container body and a lid body before fitting.

FIG. 2 is an enlarged cross-sectional view of a main part at the time of fitting.

[Explanation of symbols]

 A container body 10 storage recess 11 fitting edge 12 undercut portion 16 vertical portion B lid 21 fitting portion 22 protrusion

Claims (3)

[Scope of utility model registration request] 1. A combination of a container body made of a synthetic resin sheet and a lid body, wherein the container body has a fitting edge portion formed outside a storage recess, and the fitting edge portion is curved. Below the outer upper end of the edge portion, the front surface is formed in an inward cut-in shape, the back surface is formed in a substantially vertical shape, and the lid body is formed with a fitting portion on the outer side.
The fitting portion is fitted to a fitting edge portion of the container body, and at least a part of the fitting portion of the lid body is configured to be engaged with the undercut portion. Packaging container. 2. The fitting portion on the outer side of the lid is partially formed with an inward projection that engages with an undercut portion of the container body. Packaging container. 3. The container body is formed of a foamed resin sheet,
The packaging container according to claim 1 or 2, wherein the lid body is formed of a non-foamed resin sheet.