JP6888466B2 - Container with lid - Google Patents

Description

The present invention relates to a container with a lid that is opened and closed by a lid.

A conventional container with a lid is disclosed in Patent Document 1. This container with a lid includes a main body formed of a resin molded product and a lid for opening and closing the main body. The main body has a storage portion having a substantially rectangular top view having an opening for opening the upper surface, and an annular flange protruding outward from the upper edge of the storage portion.

The lid is formed by heat-bonding a resin film to the upper surface of an annular frame portion (outer portion) close to the outer peripheral side of the flange. The frame portion is integrally molded with the main body portion, and a hinge portion connected to the frame portion is provided on one side of a substantially rectangular flange. Further, a protrusion that engages with the flange is provided on the inner peripheral surface of the frame portion.

As a result, the lid is pivotally supported by the hinge portion on the main body portion, and when the lid is opened by bending on the hinge portion, the contents in the storage portion can be taken out. Further, when the lid is closed, the protrusion engages with the flange, and the container with the lid can be resealed.

Japanese Unexamined Patent Publication No. 2017-81610 (pages 5 to 15, FIG. 14)

However, according to the conventional container with a lid, since the lid is opened by bending on the hinge portion, the lid may be urged in the closing direction due to the elasticity of the hinge portion. Therefore, the lid cannot be kept open, and there is a problem that it is not convenient to take out the contents.

An object of the present invention is to provide a container with a lid that can improve convenience.

In order to achieve the above object, the container with a lid of the present invention is a container with a lid having a main body of a resin molded product having a storage portion with an open upper surface and a lid portion pivotally supported by the main body. The lid portion has an annular first annular portion that is integrally molded with the main body portion and arranged around the main body portion, and the first annular portion is arranged to face each other on two adjacent sides of the main body portion. It is characterized in that it is connected to the main body portion via a pair of hinge portions, and notches extending from both ends of each of the hinge portions in a direction intersecting the outer edge of the main body portion are provided.

Further, in the container with a lid having the above structure, the present invention has an annular second annular portion in which the main body portion projects outward from the upper edge of the storage portion, and the notch extends inward from the outer edge of the main body portion. It is characterized by that.

Further, the present invention is characterized in that, in a container with a lid having the above configuration, the notch is substantially orthogonal to the diagonal line of the main body portion passing between the hinge portions.

Further, the present invention is characterized in that, in the container with a lid having the above structure, a rib protruding downward is provided on the second annular portion between the hinge portions.

Further, the present invention is characterized in that, in a container with a lid having the above structure, the lid portion is formed by adhering a lid material on the first annular portion.

According to the container with a lid of the present invention, a first annular portion provided on the lid portion is arranged around the main body portion, and is connected to the main body portion by hinge portions arranged on two adjacent sides of the main body portion. Further, notches extending from both ends of each hinge portion in a direction intersecting the outer edge of the main body portion are provided. As a result, when the container with a lid is opened, the gap between the notches facing each other is twisted and easily plastically deformed, so that the state in which the lid portion is opened can be maintained. Therefore, the convenience of the container with a lid can be improved.

A perspective view showing a container with a lid according to an embodiment of the present invention. An exploded perspective view showing a container with a lid according to an embodiment of the present invention. Top view showing a container of a container with a lid according to an embodiment of the present invention. AA sectional view of FIG. Side sectional view showing an outer flange portion and an inner flange portion when the container with a lid according to the embodiment of the present invention is opened. Side sectional view showing an outer flange portion and an inner flange portion in a state where the lid of the container with a lid according to the embodiment of the present invention is heat-bonded. Side sectional view showing an outer flange portion and an inner flange portion in a state where the lid of the container with a lid of one embodiment of the present invention is closed again.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a perspective view of the container with a lid 10. The container with a lid 10 includes a container 15 made of a resin molded product and a lid material 50 made of a resin film that is heat-bonded to the upper surface of the container 15. The container 15 is formed thin by vacuum forming a thermoplastic resin such as polypropylene. The container 15 may be formed thin by injection molding.

FIG. 2 shows an exploded perspective view of the upper surface of the container with a lid 10 before the lid material 50 is heat-bonded. The container 15 has a bottomed tubular storage portion 20 having an opening 20a on the upper surface. The contents are stored in the storage unit 20. The contents are not particularly limited, but examples include side dishes, snacks such as nuts, dried fruits, and confectionery.

An annular inner flange portion 25 is provided on the upper edge of the storage portion 20 so as to project outward. An annular outer flange portion 30 is continuously provided on the outer peripheral side of the inner flange portion 25. A grip portion 31 projecting outward is provided at one corner of the outer flange portion 30.

The lid material 50 made of a resin film has a heat-bonding layer on the inner surface. The lid material 50 is heat-bonded to the entire circumference of the upper surface of the inner flange portion 25 by the heat-bonding layer, whereby the storage portion 20 is sealed. Further, the lid material 50 is heat-bonded to at least a part of the upper surface of the outer flange portion 30.

FIG. 3 shows a top view of the container 15, and FIG. 4 shows a sectional view taken along the line AA of FIG. The corners of the opening 20a on the upper surface of the storage portion 20 are formed in a substantially rhombic shape with a curved line, and the bottom wall 20b of the storage portion 20 is formed in a substantially square shape along the opening 20a. The bottom wall 20b may be formed in a shape non-similar to the opening 20a. The bottom wall 20b is provided with a substantially rectangular protrusion 21 that protrudes upward. The protrusion 21 improves the strength of the storage portion 20.

The inner flange portion 25 and the outer flange portion 30 are formed in a substantially rectangular shape along the opening 20a. A recess 29 is provided between the inner flange portion 25 and the outer flange portion 30. A plurality of slits 32 are arranged in the recess 29. The slits 32 are arranged side by side in the circumferential direction via the connecting portion 33 and the hinge portion 22 that connect the inner flange portion 25 and the outer flange portion 30.

The connecting portion 33 is formed to have a detachable length. A grip portion 31 is provided at one corner of the outer flange portion 30, and a hinge portion 22 is provided at a recess 29 at the corner facing the grip portion 31. That is, the hinge portions 22 are provided at both ends of the slits 32 along the corners of the inner flange portion 25, and are arranged so as to face each other on two adjacent sides of the container 15. The hinge portion 22 has a larger interval between the slits 32 than the connecting portion 33, making it difficult to separate the hinge portion 22.

As will be described in detail later, the container 10 with a lid is opened by separating the connecting portion 33, and the outer flange portion 30 is opened together with the lid member 50 so that the upper surface of the storage portion 20 can be opened and closed. Therefore, the main body portion 11 (see FIG. 1) formed by the container 15 on the inner peripheral side of the slit 32 is opened and closed by the lid portion 12 (see FIG. 1) formed by the outer flange portion 30 and the lid member 50.

One slit 32 (slit 32 between both hinge portions 22) sandwiching each hinge portion 22 is formed in a curved shape, and the other slit 32 is formed in a straight line. Both slits 32 that sandwich the hinge portion 22 are provided with an extension portion 32b and an extension portion 32c formed by cutting. The extension portion 32b and the extension portion 32c bend inward from one end of the slit 32 and extend. The extension portion 32b and the extension portion 32c may be formed by bending outward from one end of the slit 32. That is, the extension portion 32b and the extension portion 32c extend in a direction intersecting the slit 32 between the hinge portions 22.

At this time, the extension portion 32b and the extension portion 32c are arranged substantially in parallel, and the angle α at which the slit 32 between the hinge portions 22 intersects the extension portion 32c is formed at an acute angle.

When the container with lid 10 is opened, the outer flange portion 30 is integrated with the lid member 50 and rotates about the hinge portion 22 as a rotation axis. At this time, if the extension portion 32b and the extension portion 32c are not provided, the hinge portion 22 is twisted within the width of the slit 32, so that it is difficult to maintain a state in which the elastic force is greatly opened.

On the other hand, if the extension portion 32b and the extension portion 32c are provided, the space between the extension portions 32b and 32c including the hinge portion 22 is twisted at the time of opening and is easily plastically deformed. Therefore, the open state of the lid portion 12 can be easily maintained.

At this time, if the angle α between the slit 32 between the hinge portions 22 and the extension portion 32c is formed at an acute angle, the extending directions of the extension portions 32b and 32c are brought closer to parallel to the rotation axis. Therefore, the extension portions 32b and 32c can be twisted more easily. It is more desirable that the extension portion 32b and the extension portion 32c are substantially orthogonal to the diagonal line passing between the hinge portions 22.

Further, a plurality of (four in this embodiment) ribs 36 are provided in the recesses 29 on the inner peripheral side of the slit 32 between the hinge portions 22. The rib 36 opens the upper surface and projects downward, and the planar shape of the rib 36 is formed as an oval having a longitudinal direction toward the substantially center of the container 15. By providing the rib 36, the outer flange portion 30 and the recess 29 are less likely to be elastically deformed in the vertical direction. Therefore, it is possible to prevent the hinge portion 22 from descending due to the elasticity of the recess 29 at the time of opening, and to reliably twist on the hinge portion 22.

FIG. 5 is a side sectional view showing the outer flange portion 30 and the inner flange portion 25 of the lid material 50 before heat bonding. The upper surface of the protruding portion 25c of the inner flange portion 25 is formed to be convex upward. The recess 29 is continuously formed in the protrusion 25c, and the outer flange portion 30 is continuously formed in the recess 29. The outer flange portion 30 is inclined upward on the outer peripheral side.

At this time, the width W of the recess 29 is formed larger than the depth D. As a result, the recess 29 having a small depth D can be easily formed during the molding process of the container 15. Further, the inclination angle β of the side wall 29c on the outer peripheral side of the recess 29 is larger than the inclination angle γ of the outer flange portion 30.

FIG. 6 shows a side sectional view of the lid material 50 in a state of being heat-bonded to the container 15. A lid material 50 (see FIG. 1) is heat-bonded onto the protruding portion 25c. A recess 29 is arranged between the inner flange portion 25 and the outer flange portion 30, and the slit 32 is arranged at the bottom of the recess 29. The slit 32 may be provided on the side surface of the recess 29 on the inner flange portion 25 side. The recess 29 may be formed with a substantially rectangular cross section or a substantially trapezoidal cross section, and a slit 32 may be provided on the bottom surface or the side surface of the recess 29. Further, the recess 29 may be formed in a U-shaped cross section, a V-shape, or the like, and a slit 32 may be provided inside the lower end of the recess 29.

The lid material 50 is arranged on the container 15 and is weighted by heating the inner flange portion 25 and the outer flange portion 30. As a result, the heat-bonding layer of the lid material 50 is melted, and the lid material 50 is heat-bonded to the inner flange portion 25 and the outer flange portion 30 by the bonding portion 52 and the bonding portion 53. Although the heat-bonding layer is provided on the entire lower surface of the lid material 50, only the parts of the bonding portion 52 and the bonding portion 53 where the heat-bonding layer is melted and heat-bonded are described in the following figure for easy understanding. ing.

When the lid member 50 is heat-bonded, the outer flange portion 30 is elastically arranged horizontally at the same height as the protruding portion 25c of the inner flange portion 25. As a result, the outer flange portion 30 urges the lid member 50 upward.

In the container with lid 10 having the above configuration, when the user grips and pulls up the grip portion 31, the container with lid 10 is opened. That is, the connecting portion 33 (see FIG. 3) is separated, the adhesive portion 52 (see FIG. 6) is peeled off, and the lid member 50 is integrally opened with the outer flange portion 30.

As a result, the lid portion 12 is opened with respect to the main body portion 11, and the contents in the storage portion 20 can be taken out. At this time, the extension portions 32b and 32c are twisted, and the state in which the lid portion 12 is opened is maintained.

Further, by opening the container with a lid 10, the lid portion 12 is formed with an annular first annular portion 41 (see FIG. 7) composed of an outer peripheral portion of a recess 29 and an outer flange portion 30 to be separated on the slit 32. The outer edge of the main body 11 is formed by a slit 32, and the main body 11 is formed with an annular second annular portion 42 (see FIG. 7) composed of an inner peripheral portion of a recess 29 separated on the slit 32 and an inner flange portion 25. Will be done.

When the container 10 with a lid is opened and the connecting portion 33 (see FIG. 3) is separated, the urging force of the outer flange portion 30 is released. As a result, the engaging piece 29a and the engaging piece 29b obtained by dividing the recess 29 are formed, and the tip of the outer engaging piece 29a is displaced toward the inner peripheral side. At this time, the engaging piece 29a rotates around the inner peripheral end of the outer flange portion 30, and the depth D of the recess 29 is small, so that the amount of displacement of the engaging piece 29a in the horizontal direction is small.

When the lid member 50 is closed again, as shown in FIG. 7, the engaging piece 29a elastically deforms in the vertical direction to get over the engaging piece 29b and engage with the engaging piece 29b in the vertical direction. As a result, the lid material 50 is held in the container 15, and the container with a lid 10 can be resealed.

Further, since the depth D of the recess 29 is small, the amount of displacement of the engaging piece 29a in the horizontal direction is small, and the engaging width between the engaging piece 29a and the engaging piece 29b at the time of resealing can be reduced. Therefore, the lid material 50 after resealing can be easily opened.

Further, when the lid material 50 of the resealed container with lid 10 is opened, the lid material 50 is pulled diagonally from the grip portion 31. At this time, since the container 10 with a lid is formed in a substantially square shape, a force is applied substantially evenly to the engaging pieces 29a on the two sides sandwiching the grip portion 31. Therefore, the lid material 50 can be easily opened.

According to the container with a lid 10 of the present invention, the first annular portion 41 provided on the lid portion 12 is arranged around the main body portion 11, and the main body portion 11 is provided by the hinge portions 22 arranged on the two adjacent sides of the main body portion 11. Is connected to. Further, extension portions 32b and 32c are provided which are notches extending from both ends of each hinge portion 22 in a direction intersecting the outer edge of the main body portion 11. As a result, when the container with lid 10 is opened, the adjacent extending portions 32b and 32c (cuts) are twisted and easily plastically deformed, so that the lid portion 12 can be kept in an open state. Therefore, the convenience of the container with a lid 10 can be improved.

Further, the extending portions 32b and 32c formed by the cuts extend inward from the outer edge of the main body portion 11. Therefore, it is possible to prevent the strength of the first annular portion 41, which is narrow in the direction orthogonal to the circumferential direction, from being lowered.

Further, the angle α at which the outer edge between the hinge portions 22 of the main body portion 11 intersects with the extending portion 32c is an acute angle. As a result, the extension portions 32b and 32c are brought closer to each other in parallel with the rotation axis of the lid portion 12, and the extension portions 32b and 32c can be twisted more easily.

Further, when the extension portions 32b and 32c are substantially orthogonal to the diagonal line of the main body portion 11 passing between the hinge portions 22, the extension portions 32b and 32c can be brought closer to each other in parallel with the rotation axis of the lid portion 12.

Further, if the main body portion 11 and the outer flange portion 30 can be separated from each other, a plurality of slits 32 are arranged side by side in the circumferential direction via the connecting portion 33. Thereby, the container with a lid 10 that can be opened and resealed by disconnecting the connecting portion 33 can be easily realized.

Further, since the rib 36 protruding downward is provided on the second annular portion 42 between the hinge portions 22, the outer flange portion 30 and the recess 29 are less likely to be elastically deformed in the vertical direction. Therefore, it is possible to prevent the hinge portion 22 from descending due to the elasticity of the recess 29 at the time of opening, and to reliably twist on the hinge portion 22. The rib 36 may be singular or plural.

Further, the lid portion 12 is formed by adhering a lid material 50 made of a resin film on the outer flange portion 30 forming the first annular portion 41. Thereby, the lid portion 12 having the first annular portion 41 integrally molded with the main body portion 11 and opening and closing on the storage portion 20 can be easily realized.

Further, the lid material 50 is not limited to the resin film, and may be a multi-layer base material in which each layer made of paper, metal foil, or the like is combined, or a single-layer base material. When the lid material is bonded onto the first annular portion 41 by heat bonding, a thermosetting resin layer is provided to impart thermal adhesion to the innermost layer (layer facing the first annular portion 41) of the lid material 50. Must be. On the other hand, the thermosetting resin layer is not required when joining via an adhesive. If gas barrier properties are required, an aluminum foil layer or a vapor-deposited film may be provided in the intermediate layer of the lid material 50.

The present invention is not limited to the above-described embodiment, and various other modifications can be made.

According to the present invention, it can be used for a container with a lid that is opened and closed by a lid portion.

10 Container with lid 11 Main body 12 Lid 15 Container 20 Storage 20a Opening 20b Bottom wall 21 Projection 22 Hinge 25 Inner flange 25c Projection 29 Recess 29a, 29b Engagement piece 29c Side wall 30 Outer flange 31 Gripping Part 32 Slit 32b, 32c Extension part 33 Connecting part 36 Rib 41 First annular part 42 Second annular part 50 Lid material 52, 53 Adhesive part

Claims (5)

In a container with a lid having a main body of a resin molded product having a storage portion with an open upper surface and a lid portion pivotally supported by the main body, the lid is integrally molded with the main body to form the main body. It has an annular first annular portion arranged around the portion, and the first annular portion is connected to the main body portion via a pair of hinge portions arranged to face each other on two adjacent sides of the main body portion. A container with a lid, which is provided with notches extending from both ends of each of the hinge portions in a direction intersecting the outer edge of the main body portion. The lid according to claim 1, wherein the main body portion has an annular second annular portion projecting outward from the upper edge of the storage portion, and the notch extends inward from the outer edge of the main body portion. container. The container with a lid according to claim 2, wherein the notch is substantially orthogonal to the diagonal line of the main body portion passing between the hinge portions. The container with a lid according to claim 2 or 3, wherein a rib protruding downward is provided on the second annular portion between the hinge portions. The container with a lid according to any one of claims 1 to 4, wherein the lid portion is formed by adhering a lid material on the first annular portion.

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