JP4409025B2 - Packaging container lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lid for a packaging container, and more particularly to a lid for a packaging container that can be suitably used for containers such as tableware used at home.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, when a container such as tableware is used at home, a food wrap film is used or a removable cover is used when a container is left covered with food.
Food wrap films cannot be reused and must be made disposable, and environmental pollution is a problem due to harmful gases generated during disposal and incineration. For this reason, lids that can be reused in place of food wrap films have attracted attention and are becoming popular.
[0003]
A conventional reusable lid 90 having a circular outer shape is shown in FIG. 8, and this lid 90 is made of a slightly hard synthetic resin and includes a lid 91 that closes the opening of the container 95. In the periphery of the lid body 91, the lid body 91 is composed of fixing portions 92 provided at two locations facing the diameter direction of the lid body 91, and the whole is integrally formed of a synthetic resin material. The fixing portion 92 can fix the lid 91 by pressing the peripheral wall of the container 95 with its elastic force.
[0004]
When using the lid 90, the fixing portion 92 is aligned with the outside of the container 95, and the fixing portion 92 is pushed slightly outward by elastic deformation of the fixing portion 92 by pressing the lid body 91 against the container side. The lid 91 is placed over the mouth portion of the container 95 while spreading, and when the lid 91 is covered, the fixing portion 92 can be fixed by the elastic force with respect to the side surface of the container.
However, the lid 90 has a drawback that there is little allowable amount of the size of the container 95 to be used because the interval between the fixing portions 92 is constant. That is, when the container 95 is covered, the fixing portion 92 is locked to the outer surface of the container 95 by the elastic deformation of the fixing portion 92. There is a problem that you can. When the mouth diameter of the container 95 is smaller than the allowable range of the fixing portion 92, the fixing portion 92 cannot be locked to the outer surface of the container 95, and the lid 90 is not fixed.
[0005]
In particular, when the container 95 is made of ceramic, the sizes of the container mouths are not uniform, and the problem arises that the lid 90 can be fixed or cannot be fixed to the same type of ceramic. .
Therefore, an object of the present invention is to provide a lid for a packaging container that is a detachable lid and can be fixed even if the size of the container mouth portion varies.
[0006]
[Means for Solving the Problems and Effects of the Invention]
In order to achieve the above-mentioned object, the lid of the packaging container of the present invention is a lid having a circular or polygonal outer shape, and two or more opposing locations or three or more locations at the periphery of the lid. In addition, a lock member that protrudes outward through a bent portion made of synthetic resin is provided, and the lock member is formed to be able to press the outer wall of the container body by rotating about 90 degrees downward about the bent portion. The bent portion is formed in a substantially thin plate shape, and two slits provided in a direction orthogonal to the peripheral edge of the lid are provided in parallel, and the bent portion is formed in the width direction by the two slits. Is divided into three to form three strip-shaped portions, and the outer strip-shaped portions are provided with V-shaped grooves that cross in the width direction, and the bottom of the V-shaped grooves can be bent. The central strip is thinner than the strips on both sides. And it is characterized by being provided to bias the top surface side in the thickness direction.
[0007]
Since the lid of the packaging container having the above structure supports the lock member provided on the periphery of the lid body so as to protrude outward, the cover member does not get in the way when the cover is put on the container. Can be covered. Then, the lock member is rotated about 90 degrees downward via the bent portion, so that the lock member can be brought into contact with the outside of the container and the lid can be securely fixed.
In the bent portion, the plate-shaped body is formed with three slits by two slits, and the bottom of the V-shaped groove is formed as a hinge-shaped portion by the V-shaped groove formed in the band-shaped portion on the outside. Therefore, the lock member provided via the bent portion can be rotatably supported.
[0008]
In addition, since the central belt-like portion is formed thinner than the belt-like portions on both sides and is biased toward the upper surface side in the thickness direction, the total length of the belt-like portion when viewed from the side is the base of both of the belt-like portions. It is shorter than the sum of the distance from the end to the bottom of the V-shaped groove. For this reason, when the lock member is rotated through the bent portion, it is necessary to apply an external force for extending the central belt-like portion, and the force becomes maximum when the lock member is rotated about 45 degrees. Therefore, a bullet urging force acts on the lock member in a direction to return to the original state across this angular position. The lock member can reliably press the outside of the container by the bullet urging force. In addition, this elastic urging force can ensure a wide allowable range of the angle at which the lock member presses the outer surface of the container in the range of around 90 degrees, so that even if the size of the mouth of the container varies, it is ensured. Can be covered. And when removing a lid | cover, since the press state with respect to a container can be released by rotating a locking member to a horizontal direction, a lid | cover can be removed easily.
[0009]
Therefore, by using the lid of the packaging container having this configuration, the lock member can be surely pressed against the outer surface of the container even when the size of the container mouth portion is not constant, and the adaptability to the container is improved. To do. Further, when removing the lid, the pressed state against the container can be released, so the lid can be easily removed and the lid can be used repeatedly.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described. FIG. 1 is a perspective view of a packaging container showing an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a sectional view.
The lid 1 of the packaging container is composed of a lid 11 that covers the mouth of the container and a lock member 21 that is provided on the periphery of the lid 11 with respect to the outer surface of the container. The lock member 21 is configured in a shape that protrudes outward from the lid body 11 via a bent portion 22 serving as a hinge portion.
[0011]
As a material of the lid 1, the bent portion 22 is formed of a synthetic resin, for example, polypropylene, and is integrally formed with the lock member 21 and the lid body 11, thereby contributing to improvement in productivity.
In this example, the lid body 11 is used for a container having a circular mouth shape. The lid body 11 has a circular outer shape and has a lid for improving the adhesion with the container mouth portion. A recess 11 a is formed on the inner surface of the body 11.
Yes.
[0012]
The lock member 21 is formed by a tongue piece member protruding outward at two peripheral portions facing each other in the diameter direction of the lid body 11. The lock member 21 is configured to be rotatable at an angle of about 90 degrees toward the outer surface side of the container via the bent portion 22, and the lid 1 can be fixed by pressing the outer surface of the container.
FIG. 4 shows a partially enlarged side view of the bent portion 22, and the bent portion 22 is provided with two slits 22 a provided in a direction orthogonal to the outer periphery of the lid body 11 with a gap therebetween, The locking portion 21 is divided into three in the width direction by the slits 22a, and the three divided portions are formed in a band shape. The belt-like portions 22b on both sides are provided with a V-shaped groove 22c formed in the direction perpendicular to the longitudinal direction in the middle of the belt-like portion, and the bottom y of the V-shaped groove 22c is configured as a foldable hinge portion.
[0013]
The central band-shaped portion 22e is formed as a portion where the thickness of the lock member 21 is reduced, and is formed so as to be biased toward the upper surface side in the thickness direction. The state is biased to.
The bent portion 22 forms a triangle when connecting the respective points, where x and z are the base end positions of the central band-shaped portion 22e and y is the bottom position of the V-shaped groove 22c. The length xz is xz <xy + yz, and in order for the lock member 21 to bend, the central strip 22e must be extended until xz = xy + yz. Therefore, as long as the external force which expands the strip | belt-shaped part 22e is not applied as mentioned above, the bending part 22 does not bend naturally. Therefore, when the cover 1 is put on the container, the lock member 21 does not get in the way.
[0014]
When the lid 1 is covered with the container and the lock member 21 is bent, if the lock member 21 is rotated downward to an angle of about 45 degrees with the bottom y of the V-shaped groove 22c as a fulcrum, The belt-like portion 22e moves to a position between the bottom portions y of the V-shaped groove 22c, and the belt-like portion 22e expands to satisfy xz = xy + yz. This state is shown in FIG.
Further, when the central belt-like portion 22e is rotated, the belt-like portion 22e moves to the lower side of the bottom portion y of the V-shaped groove 22c, and the relationship xz <xy + yz is established again. Since the belt-like portion 22e is made of synthetic resin, it is reduced by the resilience. The central belt-like portion 22e maintains a state having an inward elastic force until the lock member 21 has an angle of about 90 degrees, and this state is shown in FIGS. Since the belt-like portion 22e always has an elastic force in the inner direction when the lock member 21 is in the range of about 90 degrees, the belt-like portion 22e provides a force that the lock member 21 presses against the outer surface of the container. Therefore, even when the diameter of the container is small or large, the lock member 21 can reliably press the outer surface of the container.
[0015]
And when removing the lid | cover 1, while releasing the press state with respect to a container by rotating the lock member 21 against the elastic force of the strip | belt-shaped part 22e of the bending part 22, while releasing the lock member 21 Since it can return to the original state which protruded outward, the lid | cover 1 can be removed easily.
In the said embodiment, although the example which formed the bending part 22 in two places which opposes a diameter direction was shown, three or more places can be formed in a peripheral direction. In addition, although the outer shape of the container is a circular shape, it can also be applied to a square shape, a rectangular shape, or other polygonal shapes.
[0016]
Moreover, although the example which integrally formed the cover body 11, the bending part 22, and the lock member 21 with the hard synthetic resin material was shown, if at least the bending part 22 is formed with the material which can be elastically deformed, each part will be separated. The effects similar to those of the above-described embodiment can be obtained by combining and forming the body.
As the material of the lid 1, the above-described polypropylene and other materials can be used as long as the rigidity of the bent portion 22 can be secured, and the lid 1 can be formed as an antibacterial lid.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lid of a packaging container showing an embodiment of the present invention.
FIG. 2 is a plan view of the lid.
FIG. 3 is a cross-sectional view of the lid.
4 is a partially enlarged side view of a bent portion 22. FIG.
FIG. 5 is a partial enlarged side view for explaining the operation of the bent portion 22;
6 is a partially enlarged side view for explaining the operation of the bent portion 22. FIG.
FIG. 7 is a cross-sectional view of a state where the container is covered.
FIG. 8 is a perspective view of a lid of a conventional packaging container.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover of container 11 Cover 21 Lock member 22 Bent part 22a Slit 22b, 22e Strip-like part 22c V-shaped groove

Claims (1)

A lid having an outer shape of a circle or a polygon, and is protruded outwardly through a synthetic resin bent portion at two opposing locations or at three or more locations at an interval on the periphery of the lid. A lock member is provided, and the lock member is formed to be able to press the outer wall of the container body by rotating about 90 degrees downward about the bent portion,
The bent portion is formed in a substantially thin plate shape, and two slits provided in a direction orthogonal to the periphery of the lid are provided in parallel, and the bent portion is divided into three in the width direction by the two slits. 3 band-shaped portions are formed, and V-shaped grooves that cross in the width direction are provided in the band-shaped portions on both outer sides, and the bottom of the V-shaped grooves is formed as a foldable hinge-shaped portion. A lid for a packaging container, wherein the central belt-like portion is formed to be thinner than the belt-like portions on both sides and is biased toward the upper surface side in the thickness direction.

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