JP7520765B2 - Food storage container and attachment for food storage container - Google Patents

Description

The present invention relates to a food storage container and an attachment for a food storage container.

The synthetic resin food storage container comprises a container body and a lid (see, for example, Patent Document 1). The container body comprises a bottom wall and a peripheral wall. The peripheral wall rises from the periphery of the bottom wall and defines an opening facing the bottom wall. The lid can be attached to the peripheral wall so as to close the opening, and is configured so as to be removable from the peripheral wall. When the food storage container is used, food is stored in the space defined by the container body, and the lid is attached to the peripheral wall so as to close the opening. Then, with the bottom wall of the container body in contact with the installation surface, the food storage container is placed, for example, in a refrigerator or freezer.

JP 2018-127244 A

In order to make effective use of the space inside a refrigerator, the lid of one food storage container is often stacked with the body of another food storage container. In this case, in order to remove the lower food storage container from the refrigerator, it is necessary to first remove both food storage containers from the refrigerator, or to lift the upper food storage container from the lower food storage container and then remove the lower food storage container. Because the lower food storage container is difficult to remove, there is a demand for food storage containers that are easier to remove.

A food storage container for solving the above problem comprises a container body including a bottom wall portion, a top wall portion facing the bottom wall portion, and a peripheral wall portion rising from the periphery of the bottom wall portion and extending toward the top wall portion, the peripheral wall portion including an opening portion and a liquid reservoir wall portion rising from a part of the periphery portion and extending to the lower end portion of the opening portion, and a lid body configured to be able to cover the opening portion.

According to the above food storage container, even when the container body is placed vertically so that the bottom wall portion is in contact with the installation surface, the liquid stored in the container body is received by the liquid reservoir wall portion. Therefore, the container body can be placed horizontally so that the peripheral wall portion is in contact with the installation surface, or it can be placed vertically. This allows vertically placed food storage containers to be lined up on the installation surface, making it easy to remove the food storage containers.

In the above food storage container, the peripheral wall portion may include a plurality of side wall portions, and the opening and the liquid reservoir wall portion may face the largest of the side wall portions. With this food storage container, the opening can be made larger, making it easier to store food in the container body.

In the above food storage container, the height of the liquid reservoir wall portion may be 5% to 80% of the height of the peripheral wall portion. With this food storage container, it is possible to ensure a sufficient amount of liquid that can be prevented from leaking by the liquid reservoir wall portion when the container body is placed upright, while also making it easy to store food through the opening.

In the above food storage container, the lower end of the lid may be connected to the upper end of the liquid reservoir wall. With this food storage container, the container body and the lid are integrated, so the lid will not get lost.

In the above food storage container, the container body may be provided with a leakage prevention scale located on a surface parallel to the plane along which the opening extends. With this food storage container, the leakage prevention scale is located on the container body, so that the user of the food storage container can know the amount of liquid that will not leak from the opening even when the container body is placed vertically, when the food storage container is placed horizontally.

A food storage container for solving the above problem comprises a container body including a bottom wall, a top wall facing the bottom wall, and a peripheral wall rising from a portion of the periphery of the bottom wall and extending toward the top wall, the peripheral wall defining an opening together with the bottom wall and the top wall, and a lid configured to cover the opening. The lid includes a liquid reservoir wall, an opening/closing wall, and a connecting portion connecting the liquid reservoir wall to the opening/closing wall. The liquid reservoir wall is located below the opening/closing wall when the lid is attached to the container body. The lid is configured to be able to bend the opening/closing wall from the connecting portion in a direction away from the container body when the lid is attached to the container body, and further includes a sealing portion located on the inner wall of the liquid reservoir wall and configured to be able to seal between the lid and the container body.

According to the above food storage container, even when the container body is placed vertically so that the bottom wall portion is in contact with the installation surface, the liquid stored in the container body is received by the liquid reservoir wall portion, and the gap between the liquid reservoir wall portion and the container body is sealed by the sealing portion. Therefore, it is possible to place the container body horizontally so that the peripheral wall portion is in contact with the installation surface, and it is also possible to place the container body vertically. This makes it possible to line up vertically placed food storage containers on the installation surface, making it easy to remove the food storage containers.

The food storage container attachment for solving the above problem is applied to a food storage container comprising a container body including a first bottom wall portion, a first peripheral wall portion rising from the periphery of the first bottom wall portion and defining a first opening facing the first bottom wall portion, and a lid body covering the first opening. The food storage container attachment comprises a second bottom wall portion, and a second peripheral wall portion rising from the periphery of the second bottom wall portion and defining a second opening facing the second bottom wall portion. When placed in the food storage container, the second bottom wall portion is positioned along a part of the first peripheral wall portion, whereby the second peripheral wall portion is positioned along the first bottom wall portion, the lid body, and another part of the peripheral wall portion.

According to the above-mentioned food storage container attachment, when the food storage container is placed vertically so that the portion of the first peripheral wall that the food storage container attachment comes into contact with the installation surface, the liquid inside the food storage container is received by the food storage container attachment. This makes it possible to place the food storage container vertically. This makes it possible to line up vertically placed food storage containers on the installation surface, making it easy to remove the food storage container.

1 is an exploded perspective view showing a structure of a food storage container according to a first embodiment. 4A to 4C are diagrams illustrating the operation of the food storage container shown in FIG. 1 . FIG. 11 is an exploded perspective view showing the structure of a food storage container according to a second embodiment. FIG. 11 is a perspective view showing the structure of a food storage container according to a third embodiment. FIG. 13 is an exploded perspective view showing the structure of a food storage container attachment according to a fourth embodiment together with the structure of a food storage container. 13 is a cross-sectional view showing a modified example of a food storage container to which the food storage container attachment of the fourth embodiment is applied. FIG. FIG. 13 is a perspective view showing the structure of a modified example of the food storage container of the third embodiment.

[First embodiment]
A first embodiment of a food storage container will be described with reference to Figures 1 and 2. The structure and operation of the food storage container will be described below in order.

[structure]
The structure of the food storage container will be described with reference to FIG.
As shown in Fig. 1, the food storage container 10 comprises a container body 11 and a lid 12. The container body 11 comprises a bottom wall 11B, a top wall 11T, and a peripheral wall 11S. The top wall 11T faces the bottom wall 11B. The peripheral wall 11S rises from the periphery of the bottom wall 11B and extends toward the top wall 11T. The peripheral wall 11S includes an opening 11A and a liquid reservoir wall 11SL. The liquid reservoir wall 11SL rises from a portion of the periphery and extends to the lower end of the opening 11A. The lid 12 is configured to be able to cover the opening 11A.

The peripheral wall 11S includes a plurality of side walls. The opening 11A and the liquid reservoir wall 11SL face the largest side wall. In this embodiment, the container body 11 has a rectangular parallelepiped shape. The peripheral wall 11S includes a first side wall 11S1 and a pair of second side walls 11S2. The first side wall 11S1 is larger than the second side wall 11S2. The distance between the bottom wall 11B and the top wall 11T is larger than the distance between the first side wall 11S1 and the liquid reservoir wall 11SL. The first side wall 11S1 faces the opening 11A and the liquid reservoir wall 11SL. The sum of the area of the opening 11A and the area of the liquid reservoir wall 11SL is equal to the area of the first side wall 11S1. The pair of second side walls 11S2 face each other.

The edge of the opening 11A may have a rectangular, square, circular, or elliptical shape. In the example shown in FIG. 1, the edge of the opening 11A has a rectangular shape. The lower end of the opening 11A includes the part of the opening 11A that is the shortest distance to the bottom wall 11B in the direction from the bottom wall 11B toward the top wall 11T. In this embodiment, the side of the edge of the opening 11A that is closest to the periphery of the bottom wall 11B is the lower end of the opening 11A.

The height of the liquid reservoir wall portion 11SL may be 5% or more and 80% or less of the height of the peripheral wall portion 11S. The length of the liquid reservoir wall portion 11SL along the direction from the bottom wall portion 11B toward the top wall portion 11T is the height of the liquid reservoir wall portion 11SL. The height of the peripheral wall portion 11S is equal to the distance between the bottom wall portion 11B and the top wall portion 11T.

The container body 11 may be provided with a leakage prevention scale 11SC. The leakage prevention scale 11SC is located on a plane parallel to the plane along which the opening 11A extends. In this embodiment, the leakage prevention scale 11SC is located on one of the second side walls 11S2. The leakage prevention scale 11SC has a linear shape extending in a direction from the bottom wall 11B toward the top wall 11T. The leakage prevention scale 11SC extends from the bottom wall 11B halfway toward the top wall 11T. The leakage prevention scale 11SC may extend from the bottom wall 11B to the top wall 11T.

The leakage prevention scale 11SC, which indicates the amount of liquid that the liquid reservoir wall 11SL can hold, may be a mark that can be distinguished only visually, or a step that can be distinguished both visually and tactilely.

The outer shape of the lid 12 corresponds to the shape of the edge of the opening 11A and may be rectangular, square, circular, or elliptical. In the example shown in FIG. 1, the lid 12 has a rectangular shape. The lid 12 has a sealing portion 12A and a flange portion 12B. The sealing portion 12A has a flat portion and a ring-shaped side wall portion rising from the flat portion. The sealing portion 12A has approximately the same shape and size as the opening 11A. The flange portion 12B has a ring shape that covers the entire circumference of the sealing portion 12A. The flange portion 12B protrudes from the periphery of the sealing portion 12A in a direction away from the sealing portion 12A.

When the lid body 12 is attached to the container body 11, the sealing portion 12A covers the opening 11A and is pushed into the opening 11A. At this time, the flange portion 12B is caught on the portion of the peripheral wall portion 11S that surrounds the opening 11A. This allows the lid body 12 to be attached to the container body 11 so that the lid body 12 blocks the opening 11A of the container body 11. When the lid body 12 is removed from the container body 11, a part of the flange portion 12B is lifted. Thereafter, the lid body 12 is lifted so as to peel the lid body 12 from the container body 11, and the lid body 12 is removed from the container body 11.

The food storage container 10 is formed from a synthetic resin. The synthetic resin is not particularly limited, but may be, for example, low-density polyethylene, high-density polyethylene, polystyrene, crystalline polyethylene terephthalate, amorphous polyethylene terephthalate, polyvinyl chloride, polycarbonate, and polypropylene. The food storage container 10 may be formed from one type of synthetic resin, or from multiple types of synthetic resins. The food storage container 10 may be formed by press molding, injection molding, vacuum molding, or the like. The food storage container 10 may be transparent or opaque. Note that the container body 11 of the food storage container 10 is not limited to synthetic resin, and may be made of, for example, metal or enamel.

[Action]
The operation of the food storage container 10 will be described with reference to Fig. 2. Fig. 2 shows an example of a state in which the food storage container 10 is in use, in which the food storage container 10 is placed in a refrigerator. In the following, placing the food storage container 10 with the bottom wall 11B of the container body 11 in contact with the installation surface is referred to as "upright placement." In contrast, placing the food storage container 10 with the first side wall 11S1 of the container body 11 in contact with the installation surface is referred to as "horizontal placement."

As shown in FIG. 2, according to the food storage container 10, even when the container body 11 is placed vertically so that the bottom wall portion 11B is in contact with the installation surface R1, the liquid stored in the container body 11 is received by the liquid reservoir wall portion 11SL. Therefore, the container body 11 can be placed vertically. This allows vertically placed food storage containers 10 to be lined up inside the refrigerator R, making it easy to remove the food storage container 10. In addition, according to the food storage container 10, the food storage container 10 can also be placed horizontally, so it is possible to choose between two ways of placing the food storage container 10: vertically or horizontally.

In the food storage container 10, the opening 11A and the liquid reservoir wall portion 11SL face the first side wall portion 11S1, so the opening 11A can be made large. This makes it easier to store food in the container body 11. When storing food in the food storage container 10, it is assumed that the food storage container 10 will be placed horizontally. However, with the food storage container 10, it is possible to store food into the container body 11 through the opening 11A even when the food storage container 10 is placed vertically.

As described above, the height of the liquid reservoir wall 11SL may be 5% to 80% of the height of the peripheral wall 11S. In this case, it is possible to ensure a sufficient amount of liquid that can be prevented from leaking by the liquid reservoir wall 11SL when the container body 11 is placed upright, while also making it easy to store food through the opening 11A.

When food is stored in the container body 11 with the food storage container 10 placed vertically, the user can determine the amount of liquid received by the liquid reservoir wall portion 11SL from the height of the water surface in the container body 11. In contrast, when food is stored in the container body 11 with the food storage container 10 placed horizontally, it is difficult for the user to determine the amount of liquid received by the liquid reservoir wall portion 11SL with the food storage container 10 placed vertically. In this regard, the food storage container 10 has a liquid leakage prevention scale 11SC located on the container body 11. This allows the user of the food storage container 10 to determine the amount of liquid that does not leak from the opening 11A when the container body 11 is placed vertically with the container body 11 placed horizontally.

As described above, according to the first embodiment of the food storage container, the following effects can be obtained.
(1-1) Since the liquid contained in the container body 11 is received by the liquid reservoir wall portion 11SL, the container body 11 can be placed upright.
(1-2) Since the opening 11A can be made large, it is easy to store food in the container body 11.

(1-3) When the container body 11 is placed upright, it is possible to ensure a sufficient amount of liquid that can be prevented from leaking by the liquid reservoir wall portion 11SL, while also making it easy to store food through the opening portion 11A.

(1-4) When the container body 11 is placed horizontally, the user of the food storage container 10 can grasp the amount of liquid that will not leak from the opening when the container body 11 is placed vertically by the liquid leakage prevention scale 11SC.

[Second embodiment]
A second embodiment of the food storage container will be described with reference to Fig. 3. The food storage container of the second embodiment has a different structure for fixing the lid to the container body compared to the food storage container of the first embodiment. Therefore, the following will describe these differences in detail, while omitting a detailed description of the points in common with the first embodiment.

[structure]
As shown in FIG. 3, the food storage container 20 includes a container body 21 and a lid 22. The container body 21 includes a bottom wall 11B, a top wall 11T, and a peripheral wall 11S, similar to the container body 11 of the first embodiment. The peripheral wall 11S includes an opening 11A and a liquid reservoir wall 11SL. The container body 21 further includes a flange 21SF. The flange 21SF has a rectangular ring shape surrounding the opening 11A and the liquid reservoir wall 11SL. When viewed from a viewpoint facing the first side wall 11S1, the flange 21SF protrudes from the first side wall 11S1 over the entire circumference of the first side wall 11S1. The flange 21SF protrudes outward from the end surface of the bottom wall 11B, the end surface of the top wall 11T, and the end surfaces of the pair of second side walls 11S2.

Lid body 22 has a sealing portion 12A and a flange portion 12B, similar to lid body 12 of the first embodiment. Lid body 22 further has a plurality of fasteners 22F. Fasteners 22F extend from flange portion 12B in a direction in which sealing portion 12A is recessed relative to flange portion 12B. In the example shown in FIG. 3, lid body 22 has four fasteners 22F. Flange portion 12B has a rectangular ring shape, and one fastener 22F is located on each side of flange portion 12B. Fasteners 22F are configured to be able to engage with and release from flange portion 21SF of container body 21.

When the lid body 22 is attached to the container body 21, the sealing portion 12A covers the opening 11A and is pushed into the opening 11A. At this time, the flange portion 12B of the lid body 22 contacts the flange portion 21SF of the container body 21. Furthermore, the fastener 22F is engaged with the flange portion 21SF of the container body 21 by the user operating the fastener 22F. When the lid body 22 is removed from the container body 21, the fastener 22F is first operated by the user to release the engagement of the fastener 22F with the flange portion 21SF. Next, a part of the flange portion 12B is lifted up, similar to the lid body 12 of the first embodiment. Thereafter, the lid body 22 is lifted up so as to peel off the lid body 22 from the container body 21, and the lid body 22 is removed from the container body 21.

In this way, in the food storage container 20, the fastener 22F fits into the flange portion 21SF of the container body 21, so the lid body 22 is more firmly fixed to the container body 21 than if the lid body 22 did not have the fastener 22F.

According to the second embodiment of the food storage container described above, in addition to the effects (1-1) to (1-4) described above, the following effects can be obtained.
(2-1) Since the fastener 22F fits into the flange portion 21SF of the container body 21, the lid body 22 is fixed to the container body 21 more firmly.

[Third embodiment]
A third embodiment of the food storage container will be described with reference to Fig. 4. The food storage container of the third embodiment is different from the food storage container of the first embodiment in that the lid is connected to the container body. Therefore, the following will describe these differences in detail, while omitting a detailed description of the points in common with the first embodiment.

[structure]
As shown in Fig. 4, the container body 31 has a bottom wall 11B, a top wall 11T, and a peripheral wall 11S, similar to the container body 11 of the first embodiment. The peripheral wall 11S includes an opening 11A and a liquid reservoir wall 11SL. The lid body 32 has a sealing portion 12A and a flange portion 12B, similar to the lid body 12 of the first embodiment. In this embodiment, the lower end of the lid body 32 is connected to the upper end of the liquid reservoir wall 11SL at the connection portion 30C. More specifically, the lower end of the flange portion 12B of the lid body 32 is connected to the upper end of the liquid reservoir wall 11SL. According to the food storage container 30, the container body 31 and the lid body 32 are integrated, so that the lid body 32 is not lost.

The food storage container 30 is configured so that the lid 32 can be folded from the connection portion 30C in a direction away from the container body 31. This makes it possible to attach the lid 32 to the container body 31 and to remove the lid 32 from the container body 31. The connection portion 30C of the container body 31 has flexibility that allows the lid 32 to be folded.

As described above, according to the third embodiment of the food storage container, in addition to the effects (1-1) to (1-4) described above, the effects described below can be obtained.
(3-1) Since the container body 31 and the lid 32 are integrated, the lid 32 will not be lost.

[Fourth embodiment]
Referring to FIG. 5, a food storage container attachment will be described as a fourth embodiment of the present disclosure.

[structure]
FIG. 5 shows a perspective structure of a food storage container attachment (hereinafter, "attachment") and a food storage container to which the attachment is applied.

As shown in FIG. 5, the food storage container 40 comprises a container body 41 and a lid 42. The container body 41 comprises a first bottom wall portion 41B and a first peripheral wall portion 41S. The first peripheral wall portion 41S rises from the periphery of the first bottom wall portion 41B and defines a first opening 41A facing the first bottom wall portion 41B. The lid 42 is configured to be able to cover the first opening 41A.

In this embodiment, when the lid 42 is attached to the container body 41, the food storage container 40 has a rectangular parallelepiped shape. The container body 41 has a square tube shape with one end closed. The first bottom wall portion 41B has a rectangular shape. The first peripheral wall portion 41S includes a pair of first side wall portions 41S1 and a pair of second side wall portions 41S2. The first side wall portion 41S1 is larger than the second side wall portion 41S2. The pair of first side wall portions 41S1 face each other. The pair of second side wall portions 41S2 face each other. The distance between the pair of second side wall portions 41S2 is larger than the distance between the pair of first side wall portions 41S1.

The leakage prevention scale 41SC is located on one of the first side walls 41S1. The leakage prevention scale 41SC is located on a plane parallel to the plane in which the first opening 41A extends. The leakage prevention scale 41SC has a linear shape extending in a direction from one of the second side walls 41S2 toward the other second side wall 41S2. The leakage prevention scale 41SC extends from one of the second side walls 41S2 to partway toward the other second side wall 41S2. The leakage prevention scale 41SC may extend from one of the second side walls 41S2 to the other second side wall 41S2.

The outer shape of the lid 42 may be rectangular, square, circular, or elliptical. In the example shown in FIG. 5, the outer shape of the lid 42 is rectangular. The lid 42 has a sealing portion 42A and a flange portion 42B. The sealing portion 42A has a flat portion and an annular side wall portion rising from the flat portion. The sealing portion 42A has approximately the same shape and size as the first opening 41A. The flange portion 42B has an annular shape that extends around the entire circumference of the sealing portion 42A. The flange portion 42B protrudes from the periphery of the sealing portion 42A in a direction away from the sealing portion 42A.

The attachment 43 has a second bottom wall portion 43B and a second peripheral wall portion 43S. The second peripheral wall portion 43S rises from the periphery of the second bottom wall portion 43B and defines a second opening 43A facing the second bottom wall portion 43B. When the attachment 43 is placed in the food storage container 40, the second bottom wall portion 43B is positioned along a portion of the first peripheral wall portion 41S of the container body 41. As a result, the second peripheral wall portion 43S is positioned along the first bottom wall portion 41B, the lid body 42, and another portion of the first peripheral wall portion 41S.

In this embodiment, the attachment 43 has a rectangular tubular shape with one end closed. The second bottom wall portion 43B may have a rectangular, square, circular, or elliptical shape. In the example shown in FIG. 5, the second bottom wall portion 43B has a rectangular shape. The second bottom wall portion 43B has a size and shape substantially similar to that of the second side wall portion 41S2 of the container body 41. The second peripheral wall portion 43S includes a pair of first side wall portions 43S1 and a pair of second side wall portions 43S2. The pair of first side wall portions 43S1 face each other. The pair of second side wall portions 43S2 face each other. In the direction from one second side wall portion 43S2 toward the other second side wall portion 43S2, the length of the first side wall portion 43S1 is substantially equal to the length of the second side wall portion 41S2 of the container body 41. In the direction from the first bottom wall portion 41B toward the first opening 41A, the length of the second side wall portion 43S2 is approximately equal to the width of the first side wall portion 41S1 of the container body 41.

The attachment 43 is formed from a synthetic resin. The synthetic resin is not particularly limited, but may be, for example, low-density polyethylene, high-density polyethylene, polystyrene, crystalline polyethylene terephthalate, amorphous polyethylene terephthalate, polyvinyl chloride, polycarbonate, polypropylene, etc. It is preferable that the attachment 43 is formed from a synthetic resin that can be deformed to fit closely along the inner wall of the container body 41 and the inner wall of the lid body 42. Therefore, it is even more preferable that the attachment 43 is formed from an elastic body (rubber) such as an elastomer or silicone.

The attachment 43 may be formed from one type of synthetic resin or from multiple types of synthetic resins. The attachment 43 may be formed by press molding, injection molding, vacuum molding, or the like. The attachment 43 may be transparent or opaque. It is preferable that the attachment 43 has a degree of flexibility that allows it to deform along the inner wall of the container body 41 and the inner wall of the lid body 42. It is preferable that the attachment 43 has a higher flexibility than the container body 41 and the lid body 42.

[Action]
In this embodiment, when the attachment 43 is placed in the food storage container 40, the second bottom wall portion 43B is positioned along the second side wall portion 41S2 of the container body 41. As a result, one of the second side wall portions 43S2 of the attachment 43 is positioned along one of the first side wall portions 41S1 of the container body 41. Also, the other of the second side wall portions 43S2 of the attachment 43 is positioned along the other of the first side wall portions 41S1 of the container body 41. Meanwhile, one of the first side wall portions 43S1 of the attachment 43 is positioned along a part of the first bottom wall portion 41B of the container body 41. Also, the other of the first side wall portions 43S1 of the attachment 43 is positioned along a part of the lid body 42.

Therefore, when the food storage container 40 is placed vertically so that the second side wall portion 41S2 of the first peripheral wall portion 41S, which the attachment 43 contacts, is in contact with the installation surface, the liquid in the food storage container 40 is received by the attachment 43. Therefore, the food storage container 40 can be placed vertically. Note that even if the food storage container 40 has the attachment 43 attached, it is also possible to place the food storage container 40 horizontally so that the first bottom wall portion 41B is in contact with the installation surface.

As described above, according to one embodiment of the attachment for a food storage container, the following effects can be obtained.
(4-1) Since the liquid in the food storage container 40 is received by the attachment 43, the food storage container 40 can be placed upright so that the second side wall portion 41S2 that contacts the attachment 43 contacts the installation surface.

[Example of change]
The above-described embodiment can be modified as follows.
[Leak prevention scale]
In the first to third embodiments, the leakage prevention scale 11SC may be located not only on the second side wall portion 11S2 but also on the bottom wall portion 11B or the top wall portion 11T. The container body 11, 21, 31 may have a plurality of leakage prevention scales 11SC. In this case, the container body 11, 21, 31 may have two or more of the leakage prevention scale located on the second side wall portion 11S2, the leakage prevention scale located on the bottom wall portion 11B, and the leakage prevention scale located on the top wall portion 11T.

- In the fourth embodiment, the leakage prevention scale 41SC is not limited to being located on the first side wall portion 41S1, but may also be located on the second side wall portion 41S2. Furthermore, the container body 41 may have multiple leakage prevention scales 41SC. In this case, the container body 41 can have both a leakage prevention scale located on the first side wall portion 41S1 and a leakage prevention scale located on the second side wall portion 41S2.

[Container body]
6, the container body 41 of the fourth embodiment may have a recess 41BD in the first bottom wall portion 41B for fitting the attachment 43. This makes it difficult for the attachment 43 to shift position relative to the container body 41, making it even more difficult for liquid to leak from the food storage container 40 when the food storage container 40 is placed upright.

- The food storage containers 10, 20, 30, and 40 may have a shape other than a rectangular parallelepiped. For example, the food storage container may have a cylindrical shape. Alternatively, in the food storage containers 10, 20, and 30 described above, a pair of opposing side walls may have a trapezoid shape.

- The opening 11A may be located in a part of the side wall portion facing the first side wall portion 11S1, and the periphery of the opening 11A may be surrounded by the side wall portion. In this case, when viewed from a viewpoint facing the first side wall portion 11S1, the opening 11A may have a rectangular shape or a shape other than a rectangular shape. For example, the opening 11A may have a circular shape, an elliptical shape, or a polygonal shape other than a rectangular shape.

When the lower end of the edge of the opening 11A is curved, the wall portion of the peripheral wall portion 11S that is located below the opening 11A and has a height equal to or less than the part that connects to the lower end of the opening 11A functions as the liquid reservoir wall portion 11SL.

- Food storage containers 10, 20, and 30 may have an opening that spans multiple side wall portions. For example, food storage containers 10, 20, and 30 may be large enough to span at least one of the pair of second side wall portions 11S2.

[attachment]
The attachment 43 does not have to have a pair of second side walls 43S2. Even in this case, one of the first side walls 43S1 of the attachment 43 contacts the lid 42, and the other first side wall 43S1 contacts the first bottom wall 41B. Therefore, when the food storage container 40 is placed upright, the attachment 43 can significantly prevent liquid from leaking from the food storage container 40.

[Food storage containers]
The food storage container 10 of the first embodiment may be modified as follows.
That is, the lid body 12 has only the sealing portion 12A, and the side wall portion of the sealing portion 12A has a screw portion on the inner surface. The container body 11 has an annular opening wall portion rising from the edge of the opening 11A. The opening wall portion has a screw-receiving portion on the outer surface that is shaped so that the side wall portion of the sealing portion 12A can be screwed. In such a food storage container, the side wall portion of the lid body 12 is screwed onto the opening wall portion of the container body 11, thereby closing the opening of the container body 11 with the lid body 12. The side wall portion of the sealing portion 12A may have a screw portion on the outer surface. In this case, it is sufficient that the opening wall portion has a screw-receiving portion on the inner surface. As a result, the side wall portion of the lid body 12 is screwed onto the opening wall portion of the container body 11, thereby closing the opening of the container body 11 with the lid body 12.

The food storage container 30 of the third embodiment may be modified as follows.
That is, as shown in Fig. 7, the food storage container 50 includes a container body 51 and a lid 52. The container body 51 includes a bottom wall portion 11B, a top wall portion 11T, and a peripheral wall portion 11S. The peripheral wall portion 11S rises from a part of the periphery of the bottom wall portion 11B and extends to the top wall portion 11T. The peripheral wall portion 11S, together with the bottom wall portion 11B and the top wall portion 11T, defines an opening portion 11A. In the example shown in Fig. 7, the peripheral wall portion 11S includes a first side wall portion 11S1 and a pair of second side wall portions 11S2. The opening portion 11A faces the first side wall portion 11S1.

The lid 52 is configured to cover the opening 11A. When the lid 52 is attached to the container body 51, it faces the first side wall 11S1. The lid 52 has a liquid reservoir wall 52SL and an opening/closing wall. When the lid 52 is attached to the container body 51, the liquid reservoir wall 52SL is located below the opening/closing wall. In the direction from the bottom wall 11B toward the top wall 11T, a connection portion 52C is located between the liquid reservoir wall 52SL and the opening/closing wall. When the lid 52 is attached to the container body 51, the lid 52 is configured so that the opening/closing wall can be folded from the connection portion 52C in a direction away from the container body 51. The connection portion 52C has flexibility that allows the opening/closing wall to be folded.

In the example shown in FIG. 7, the opening and closing wall portion includes a sealing portion 52A and a flange portion 52B. The sealing portion 52A includes a flat portion and an annular side wall portion rising from the flat portion. The flange portion 52B is located on the periphery of the sealing portion 52A other than the portion where the connection portion 52C is located. The flange portion 52B protrudes from the periphery of the sealing portion 52A in a direction away from the sealing portion 52A.

When the opening and closing wall is closed, the sealing portion 52A is pushed into the opening 11A, and the flange portion 52B is caught on the end surface that defines the opening 11A. On the other hand, when the opening and closing wall is opened, a part of the flange portion 52B is lifted. The opening and closing wall is then lifted so as to peel off the opening and closing wall from the container body 51, thereby opening the opening and closing wall.

The lid body 52 further includes a sealing portion 52SE located on the inner wall of the liquid reservoir wall portion 52SL. The sealing portion 52SE is configured to be capable of sealing between the liquid reservoir wall portion 52SL and the container body 51. When the lid body 52 is attached to the container body 51, the sealing portion 52SE fits closely along the inner wall of the container body 51, thereby preventing liquid from leaking from the food storage container 50 when the food storage container 50 is placed upright.

The sealing portion 52SE is preferably an elastic body, and is preferably formed from rubber such as elastomer or silicone.
According to the food storage container 50, the following effects can be obtained.

(5-1) Even when the container body 51 is placed vertically so that the bottom wall portion 11B is in contact with the installation surface, the liquid stored in the container body 51 is received by the liquid reservoir wall portion 52SL, and the gap between the liquid reservoir wall portion 52SL and the container body 51 is sealed by the sealing portion 52SE. Therefore, it is possible to place the container body 51 horizontally so that the peripheral wall portion is in contact with the installation surface, and to place the container body 51 vertically.

Reference Signs List 10: Food storage container 11: Container body 11A: Opening 11B: Bottom wall 11S: Peripheral wall 11SL: Liquid reservoir wall 12: Lid

Claims (6)

A bottom wall portion;
a top wall portion facing the bottom wall portion;
a container body including a peripheral wall portion rising from a peripheral edge of the bottom wall portion and extending toward the top wall portion, the peripheral wall portion including an opening and a liquid reservoir wall portion rising from a part of the peripheral edge and extending to a lower end of the opening;
and a lid configured to cover the opening. The peripheral wall portion includes a plurality of side walls,
The food storage container according to claim 1 , wherein the opening and the liquid reservoir wall face the largest of the side walls. The food storage container according to claim 1 or 2, wherein the height of the liquid reservoir wall portion is 5% to 80% of the height of the peripheral wall portion. The food storage container according to claim 1 , wherein a lower end of the lid body is connected to an upper end of the liquid reservoir wall portion. The food storage container according to claim 1 , wherein the container body is provided with a leakage prevention scale located on a surface parallel to a plane along which the opening extends. A first bottom wall portion;
A food storage container attachment is applied to a food storage container including a container body including a first peripheral wall portion rising from a periphery of the first bottom wall portion and defining a first opening facing the first bottom wall portion, and a lid body configured to be able to cover the first opening,
A second bottom wall portion;
a second peripheral wall portion rising from a peripheral edge of the second bottom wall portion and defining a second opening portion facing the second bottom wall portion;
An attachment for a food storage container, wherein when placed within the food storage container, the second bottom wall portion is positioned along a portion of the first peripheral wall portion, thereby causing the second peripheral wall portion to be positioned along the first bottom wall portion, the lid body, and another portion of the first peripheral wall portion.