Food container

Abstract

To provide a food container with a large storage space.SOLUTION: A food container 100 has a first bottom surface 11 and a first side surface 12, includes: a first container 1 having a first opening surface 17 that is open at a top surface; a second bottom surface 21; and a second side surface 22, has a second opening surface 27 that is open at the top surface, comprises a second container 2 of which the second side surface 22 can be partially exposed from the first container 1 in a state of setting on the first opening surface 17, and a lid 3 that can be fitted to and close either the first opening surface 17 or the second opening surface 27. A second inner diameter 28 of the second opening surface 27 is larger than a first inner diameter 18 of the first opening surface 17, and the lid 3 has a first wall 39 a that fits into the first inner diameter 18 and a second wall 39 b that fits into the second inner diameter 28.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a food container, for example a container for noodles, capable of storing noodles, ingredients, and soup separately. [Background technology]

[0002] Various containers have been developed to store foods such as noodles. If noodles and ingredients remain submerged in soup, they will stretch and lose their firmness, so containers that store the noodles and ingredients separately from the soup are used. Similarly, containers that store rice and side dishes separately are used for parent-and-child bowls and the like. In addition to being used in traditional food sections such as supermarkets and convenience stores, such food containers are also being used for takeout and delivery in response to the demand for staying indoors during the recent COVID-19 pandemic.

[0003] Conventionally, such a food container 900 has a structure in which the inner tray 902 is completely submerged in the bottom container 901 and closed with a lid 903, as shown in FIG. 9. With this structure, both the inner tray 902 and the bottom container 901 can be closed with a common lid 903. However, with this structure, as shown in the cross-sectional view of FIG. 9, there is a problem that the storage space of the bottom container 901 becomes narrower due to the need to store the inner tray 902. On the other hand, if the inner tray 902 is made thinner, the storage space of the inner tray 902 will become narrower. Thus, with the conventional food container 900, it was difficult to ensure both the volume of the inner tray 902 and the volume of the bottom container 901. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-199274 A Summary of the Invention [Problem to be solved by the invention]

[0005] One object of the present disclosure is to provide a food container with a large storage space.

[0006] In order to achieve the above-mentioned object, a food container according to one embodiment of the present disclosure comprises a first container having a first opening surface having a first bottom surface and a first side surface, and an opening at the top surface; a second container having a second bottom surface and a second side surface and an opening at the top surface, the second side surface being partially exposed from the first container when set on the first opening surface; and a lid that can fit over either the first opening surface or the second opening surface to close it, wherein a second inner diameter of the second opening surface is larger than the first inner diameter of the first opening surface, and the lid has a first wall that fits with the first inner diameter and a second wall that fits with the second inner diameter, arranged concentrically.

[0007] With the above configuration, the second container is not completely submerged in the first container, but only partially submerged, thereby allowing the second container to be partially exposed from the first container, thereby ensuring the capacity of the first container and the second container. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view of a food container according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 is an exploded perspective view of the food container shown in FIG. [Diagram 3] 3 is a schematic cross-sectional view of a first container, a second container, and a lid. FIG. [Figure 4] 4 is a schematic cross-sectional view showing a state in which the first container, the second container, and the lid are fitted together. FIG. [Diagram 5] FIG. 5 is an enlarged cross-sectional view of a main part of FIG. [Figure 6] FIG. 2 is a schematic perspective view of a first container and a lid. [Figure 7] FIG. 4 is a schematic cross-sectional view showing a state in which the first container and the lid are fitted together. [Figure 8] 3A and 3B are schematic perspective and plan views of a recess; [Figure 9] FIG. 1 is a cross-sectional view showing an example of a conventional food container. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiments of the present disclosure may be characterized by the following configurations and features. A food container according to one embodiment of the present disclosure comprises a first container having a first opening surface having a first bottom surface and a first side surface, and an opening at the top, a second container having a second bottom surface and a second side surface and an opening at the top surface, the second side surface being partially exposed from the first container when set on the first opening surface, and a lid capable of fitting to close either the first opening surface or the second opening surface, wherein a second inner diameter of the second opening surface is larger than a first inner diameter of the first opening surface, and the lid has a first wall that fits with the first inner diameter and a second wall that fits with the second inner diameter.

[0010] With the above configuration, the second container is not completely submerged in the first container, but only partially submerged, thereby allowing the second container to be partially exposed from the first container, thereby ensuring the capacity of the first container and the second container.

[0011] The above-mentioned configuration also makes it easy to set the second container on the first container, because when set, the second container has a portion that is partially exposed from the first container, and the first inner diameter contacts the center of the second side surface when the second container is set on the first opening surface, improving the strength of the second side surface that comes into contact, preventing twisting, bending, and deformation, and preventing the second container from rotating or rolling, and efficiently transmitting the setting force, allowing the second container to be set simply, easily, and without stress.

[0012] In another aspect of the food container, in the above-mentioned embodiment, the lid is configured to be able to fit and close the first opening surface. With the above-mentioned configuration, the first container can be used by itself without using the second container by closing the lid, and the first container can be used in common without providing a separate lid, depending on the purpose.

[0013] In another aspect of the food container, in any of the above configurations, the lid has a second wall formed in a stepped shape from its periphery, and a first wall formed in a stepped shape from the second wall portion. With this configuration, it is possible to close the first opening surface and the second opening surface, which have different inner diameters, with a common lid by a fitting structure with a simple stepped configuration.

[0014] In another aspect of the food container, in any of the above configurations, the second container has a second closing structure at the middle of the second side surface that fits over the first opening surface to close the first opening surface. With this configuration, the second container can be fitted over the first container with the second closing structure, thereby stably closing the first container.

[0015] In another aspect of the food container, in any of the above configurations, the lid has a flange that opens on the side. With the above configuration, it is possible to prevent foreign matter such as dust from entering the first container or the second container from the top surface of the lid. Steam from the first container or the second container can be exhausted, and the heat of the contents of the first container can warm the contents of the second container. For example, the heat of the liquid soup in the first container can be used to warm, keep warm, and moisturize the noodles in the second container, preventing them from drying out and losing their firmness.

[0016] In another embodiment of the food container, in any of the above configurations, the second container has a U-shaped cut partially formed in the second bottom surface, and the lid has a recess formed in at least a part of the periphery facing the second opening surface of the second container. With this configuration, the heat of soup or the like stored in the first container can be guided to the second container through the cut to be heated, while the above can be discharged from the second container to the outside through the recess. This makes it possible to discharge steam and the like while avoiding the intrusion of foreign matter from the outside that occurs when a U-shaped cut is provided in the lid as in the conventional case.

[0017] In the food container according to another embodiment, in any of the above-mentioned configurations, the first side surface can have an uneven portion. With the above-mentioned configuration, the amount of the contents of the first container can be easily determined by using the unevenness, steps, grooves, edges, lines, etc. of the uneven portion as a mark for the amount of the contents, and the appropriate amount of the contents can be easily and quickly poured without measuring the amount. For example, when pouring liquid soup, the work of measuring and pouring the soup every time is time-consuming and troublesome, but by using the mark on the uneven portion as a reference, the appropriate amount according to the order, such as a large serving, a medium serving, or a small serving, can be easily and quickly poured. In addition, the uneven portion can reinforce the first side surface. Furthermore, the uneven portion can make the first container easier to hold and can adjust the transfer of steam and heat from the first container.

[0018] In another aspect of the food container, in any of the above configurations, the first container can be a space for containing soup, and the second container can be a space for containing noodles or toppings. With the above configuration, for example, the steam and heat of the soup in the lower first container can keep the noodles or toppings in the upper second container warm and moist.

[0019] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, terms indicating specific directions or positions (e.g., "upper", "lower", and other terms including these terms) are used as necessary, but the use of these terms is for the purpose of facilitating understanding of the invention with reference to the drawings, and the meaning of these terms does not limit the technical scope of the present disclosure. In addition, parts with the same reference numerals appearing in multiple drawings indicate the same or equivalent parts or members. Furthermore, the embodiments shown below are specific examples of the technical ideas of the present disclosure, and do not limit the present disclosure to the following. Furthermore, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described below are intended to be illustrative and not to limit the scope of the present disclosure. Furthermore, the contents described in one embodiment or example can be applied to other embodiments or examples. Furthermore, the sizes and positional relationships of the components shown in the drawings may be exaggerated to clarify the explanation. (Food container 100)

[0020] A food container 100 according to the first embodiment will be described with reference to Figures 1 to 8. In these figures, Figure 1 is a schematic perspective view of the food container 100 according to the first embodiment, Figure 2 is an exploded perspective view of the food container 100, Figure 3 is a schematic cross-sectional view of the first container 1, the second container 2, and the lid 3, Figure 4 is a schematic cross-sectional view of the first container 1, the second container 2, and the lid 3 when fitted together, Figure 5 is a schematic enlarged cross-sectional view of the fitted portion, Figure 6 is an exploded perspective view of the first container 1 and the lid 3, Figure 7 is a schematic cross-sectional view of the first container and the lid when fitted together, and Figure 8 is a schematic perspective view and plan view of the recess.

[0021] Food container 100 is a container for storing food ingredients, and comprises a first container 1, a second container 2, and a lid 3. Food container 100 in Fig. 1 is arranged with first container 1 set on the bottom as a bottom container and second container 2 set on the top of first container 1 as an inner dish container. Food container 100 can store the same or different contents (items to be stored, contained items) separately in first container 1 and second container 2.

[0022] The food container 100 can store the contents separately in the first container 1 and the second container 2. The food container 100 can be used, for example, in food sections such as supermarkets and convenience stores, as well as for takeout, delivery, and home delivery. The food container 100 can be used as a container that stores the ingredients of the contents separately in the first container 1 and the second container 2. For example, when the contents are ramen, udon, soba, etc., the liquid soup can be stored separately in the first container 1, and the noodles and ingredients can be stored separately in the second container 2. This prevents the noodles from becoming soaked in the liquid soup and becoming soft. When the contents are katsudon, oyakodon, curry rice, etc., the first container 1 can store sauce or curry, and the second container 2 can store rice, so that the rice does not become saturated with sauce or the like, and the food has a freshly made feel. In this way, the food container 100 is suitable as a container that stores the contents separately and integrates them by placing one on top of the other or mixing them together just before eating. In addition, either or both of the first container 1 and the second container 2 can be used as a plate, and the two types of food stored in the first container 1 and the second container 2 can be eaten simultaneously or alternately.

[0023] Some ingredients may lose their taste, flavor, texture, etc. over time and with storage conditions. For example, in the case of takeout, it is not easy to provide ingredients with the same taste, flavor, and texture as those served in the restaurant. For example, it is preferable to serve hot ingredients as hot as possible. However, it is not just a matter of temperature, but also the storage, storage conditions, and containers of the ingredients affect the quality. If ingredients that are in different states, such as liquid and solid, or have different temperatures or seasonings, are served together without being stored separately, problems such as solid ingredients being submerged in liquid soup, noodles losing their core, stretching, flavors mixing, ingredients becoming too hot, and oversteaming may occur. In addition, for example, when ingredients cool, problems such as a decrease in taste, flavor, and texture, drying, and hardening may occur. In the case of takeout, where it takes a certain amount of time from when the ingredients are stored in a food container until they are actually eaten, the difference from in-store serving becomes more noticeable. By storing and serving the ingredients separately in a food container and integrating them by adding them on top or mixing them just before eating, it is possible to prevent the flavors from mixing, which has a certain effect. Furthermore, by maintaining the temperature, humidity, and condition of the ingredients in a good condition within the container, it is possible to realize flavor, taste, texture, and condition of the ingredients close to those served in the store. In this way, the food container 100 of the present disclosure can store two types of ingredients separately in the first container 1 and the second container 2, and further, by maintaining the temperature, humidity, and condition of the ingredients in a good condition, it is possible to prevent deterioration of flavor, taste, and texture.

[0024] The second container 2 partially exposes the second side surface 22 from the first container 1 when it is set on the first opening surface 17 of the first container 1. The second container 2 shown in FIG. 1 partially exposes the second side surface 22 from the first opening surface 17 when it is set on the first opening surface 17. The food container 100 described above can expand the capacity of the second container 2 by the amount of the second container 2 partially exposed from the first opening surface 17 and protruding above the first opening surface 17. In addition, the portion of the second container 2 partially exposed from the first opening surface 17 does not limit the capacity of the first container 1. The conventional food container 900 has a structure in which the inner plate container 902 (second container 2) is dropped (embedded) in a manner that the bottom container 901 (first container 1) is completely buried. In comparison, the food container 100 can sufficiently secure the capacity of the first container 1 and the second container 2 while reducing the limit of the capacity of the first container 1 by the second container 2 being partially exposed from the first opening surface 17.

[0025] The food container 100 is a plastic sheet formed into a predetermined three-dimensional shape by thermoforming. Thermoforming methods include, for example, vacuum forming, pressure forming, vacuum pressure forming, and hot plate forming. The plastic sheet may be, for example, a sheet material made of resin such as polystyrene, polypropylene, or polyester. The plastic sheet may be either a foamed sheet or a non-foamed sheet, and a laminated sheet in which one or more sheets are laminated may also be used. The laminated sheet may be, for example, a film-laminated foamed sheet in which a film is laminated on a foamed sheet, a co-extrusion laminate sheet, or an extrusion laminate sheet. The plastic sheet has excellent formability, heat resistance, and heat retention. The plastic sheet may be an environmentally friendly one.

[0026] The plastic sheet forming the food container 100 can have a thickness of, for example, 0.1 mm to 4.0 mm, preferably 0.4 mm to 2.5 mm. The first container 1, the second container 2, and the lid 3 can have the same or different thicknesses. The plastic sheet can have different thicknesses in parts. In addition, the first container 1, the second container 2, and the lid 3 can have the same or different colors. For example, they can be white, black, or other colors, or can be colorless and transparent to allow the ingredients in the contents to be seen. In addition, patterns, designs, logos, store names, product names, warnings, etc. can be applied to some parts of the plastic sheet. (First container 1)

[0027] The first container 1 is a cylindrical container with a bottom capable of storing contents. The first container 1 has a first bottom surface 11 and a first side surface 12 connected to the first bottom surface 11, and has a first opening surface 17 that is open at the top. The first bottom surface 11 constitutes the bottom of the first container 1. The first side surface 12 constitutes the peripheral wall of the first container 1, and is a side wall that extends upward from the outer edge of the first bottom surface 11.

[0028] The first container 1 in Fig. 2 is a bottom container. In the figure, the first bottom surface 11 is circular, and the first side surface 12 forms a circular annular side wall. Although not shown, the first bottom surface can be in a shape other than a circle, for example, a polygon such as a triangle, a rectangle, a pentagon, a hexagon, or an octagon, an ellipse, or an irregular shape.

[0029] The first container 1 in Fig. 3 has a substantially circular first bottom surface 11 and a first side surface 12 formed in a substantially tapered shape with a cross-sectional area gradually increasing from the outer periphery of the first bottom surface 11 toward a first opening surface 17. The opening area of ​​the first opening surface 17 is larger than the bottom area of ​​the first bottom surface 11, and the first side surface 12 has an inclination angle expanding upward. However, although not shown, the first side surface can be a vertical surface.

[0030] The first container 1 has an uneven portion 13 on the first bottom surface 11 or the first side surface 12. The uneven portion 13 is a portion having a concave or convex shape relative to a flat or curved surface, and the uneven portion 13 can have an uneven shape such as a groove, a step, or a protruding shape. The first container 1 is provided with one or more uneven portions 13. The uneven portion 13 can improve the strength without increasing the thickness of the sheet or in addition to the thickness by using a shape such as an unevenness or step relative to a flat or curved surface as a reinforcing rib. For example, the uneven portion 13 can improve the strength and rigidity of the first side surface 12 and prevent and suppress deformation such as warping, twisting, and bending, thereby reinforcing the first container 1. The ribs on the side surface are resistant to impact during transportation and are suitable for containers for delivery, etc.

[0031] The uneven portion 13 may have a quantity recognition line 15 that allows the amount of the contents to be recognized and identified, such as a mark, a guideline, or a scale. The quantity recognition line 15 is a line or shape that allows the amount of the contents to be recognized and identified, and is provided on a surface extending in the vertical direction (for example, the first side surface 12). The uneven portion 13 may be provided with a quantity recognition line 15, such as a line, shape, or step that allows the amount to be recognized, and a line, side, end, specific part, step, shape, etc. of the uneven portion 13, such as a three-dimensional shape or step, may be used as the quantity recognition line 15. The quantity recognition line 15 is not limited to a linear shape, and it is sufficient as long as the amount can be recognized by multiple specific shapes. The quantity recognition line 15 is a shape or specific part such as a line, side, step, or unevenness of a certain length, and the amount can be extremely easily and quickly identified on the upper surface of the contents in a state of approximately resting. In addition, by providing multiple quantity recognition lines 15, it is possible to judge by any of the quantity recognition lines 15, making it easier to recognize. In addition, multiple portions can be set. Using the amount recognition line 15 of the uneven portion 13 as a marker, the first container 1 can be filled with an amount according to an order, such as a large amount, a medium amount, or a small amount. For example, in FIG. 2, the upper surface of the uneven portion 13a can be a amount recognition line 15a indicating a large amount line, the step line of the uneven portion 13c can be a amount recognition line 15b indicating a medium amount line, and the upper surface of the uneven portion 13b can be a amount recognition line 15c indicating a small amount line. By filling the appropriate amount of contents while looking at the amount recognition line 15, the time-consuming and troublesome task of measuring the amount according to the order every time is no longer necessary, and anyone can determine the appropriate amount and fill it quickly and easily. It is possible to improve the efficiency of filling the container with contents without hassle and in a short time, and to reduce costs.

[0032] In addition, the uneven portion 13 can contribute to the ease of holding, anti-slip, and ease of carrying the first container 1. The uneven portion 13 can also contribute to the design and aesthetics of the container. The uneven portion 13 can support and hold the second container 2 in a predetermined position and posture. This is because the uneven portion 13 can be used to position the second container 2 set on the first opening surface 17, prevent rotation, misalignment, and tilting, support the second container 2, and stably maintain its posture, depending on the arrangement, shape, and contact condition of the uneven portion 13 with the second container 2. The uneven portion 13 can also adjust the direction and degree of conduction of steam and heat from the first container 1. The uneven portion 13 is shaped to reduce the vertical stacking height of the containers together with the inclination gradient of the first side surface 12, thereby reducing the stack height of the first containers 1 stacked on top of each other, reducing storage space, and allowing for convenient use.

[0033] The uneven portion 13 has a shape and size according to the arrangement and role to be provided. As an example, the first container 1 in FIG. 2 has a large triangular inwardly convex uneven portion 13a, a small triangular inwardly convex uneven portion 13b, a stepped uneven portion 13c extending horizontally in the middle of the first side surface 12, a stepped uneven portion 13d extending horizontally at the boundary with the first fitting portion 19, and an outwardly convex (inner concave) uneven portion 13e extending vertically. For example, the uneven portions 13a and 13b improve the strength of the lower portion of the container and maintain the shape of the container including the contents stored therein. The uneven portions 13a, 13b, and 13c can be used as the amount recognition lines 15a, 15b, and 15c of the contents at the step with the triangular upper surface. The uneven portion 13d improves the strength near the first opening surface 17. The uneven portion 13e extends from the top to the bottom of the first side surface 12, and is provided to improve the strength of the entire container and to adjust the transfer of steam and heat inside the first container 1. However, the shape and size of the uneven portion are not limited to those shown in the drawings. For example, a quantity recognition line can be provided according to the contents or to accommodate various contents, and a reinforcing rim can be provided as well.

[0034] The first container 1 has a first fitting portion 19 that fits into the second container 2 or the lid 3. The first fitting portion 19 in FIG. 3 fits into the second side surface 22 of the second container 2 or the first wall 39a of the lid 3. The first fitting portion 19 is provided on the upper part of the cylindrical first side surface 12, on the periphery of the first opening surface 17. The first fitting portion 19 is provided on the inner side of the first side surface 12, and the second fitting portion 29 (second fitting structure 29A) on the outer surface side of the second side surface 22 is fitted into the first container 1, so that the second container 2 is set inside the first container 1. The first fitting portion 19 is preferably at an angle and gradient different from that of the first side surface 12. In FIG. 3, the first side surface 12 is inclined to widen upward except for the uneven portion 13, and the first fitting portion 19 is a tapered surface inclined to widen downward on the side opposite to the first side surface 12. Although not shown, the first side surface is inclined to widen upward, and the first fitting portion can be a vertical surface. The first fitting portion 19 can reliably fit members that have been fitted once, and the fitted portions come into surface contact with each other to improve the degree of airtightness. The first fitting portion 19 improves the strength of the fitted portions. The first fitting portion 19 can reliably fit the second container 2. The first fitting portion 19 in FIG. 3 has a step (uneven portion 13d) between it and the first side surface 12. The step can improve the degree of fit and airtightness of the fitted members together with the first fitting portion 19, and can also improve the strength of the first side surface 12.

[0035] The first side surface 12 in FIG. 2 has a first flange 16. The first flange 16 is a brim portion formed by extending outward from the periphery of the first side surface 12. The first flange 16 is connected to the upper end of the first side surface 12 approximately perpendicular to the first side surface 12 along the outer periphery of the first opening surface 17. The first flange 16 can be a flat surface having a certain width, a curved surface, or a combination of a flat surface and a curved surface. The first flange 16 in FIG. 3 extends horizontally outward from the upper end of the first side surface 12 and has a downward curved surface and a bent portion at the tip. The first flange 16 surrounds the periphery of the first side surface 12, prevents bending, distortion, and deformation of the first side surface 12, maintains the shape of the entire first container 1, and improves its strength. The first flange 16 improves the strength along the outer periphery of the first opening surface 17 at the upper end of the first side surface 12, is resistant to shocks during transportation, and improves the fitting strength, adhesion, and degree of sealing between the first container 1 and the second container 2 or the lid 3.

[0036] The first flange 16 may be provided with one or more handles 16a. The first flange 16 in Fig. 2 is provided with the handle 16a. The handle 16a is easy to hold with fingers or to hook with fingers, making it easy to remove the second container 2 set on the first container 1 or the lid 3 closing the first container 1, and making it easy to set the second container 2 on the first container 1 and close the lid 3. The shapes of the first flange 16 and the handle 16a are not particularly limited. (Second container 2)

[0037] The second container 2 is a bottomed cylindrical container capable of storing contents, and includes a second bottom surface 21 and a second side surface 22 connected to the second bottom surface 21, and has a second opening surface 27 that is open at the top. In the food container 100 of FIG. 1, when the second container 2 is set in the first container 1, the second container 2 that is placed above the first container 1 that is the bottom container placed below becomes an inner tray container. The second container 2 is placed between the lid 3 and the first bottom surface 11, and can be used as an inner tray container. The second container 2 can separately store contents that are the same as or different from those of the first container 1.

[0038] The second bottom surface 21 in Fig. 2 is substantially circular, but can be formed into a shape other than substantially circular, as with the first container 1. The second container 2 in Fig. 2 has a substantially circular second bottom surface 21 and a second side surface 22 formed in a substantially tapered shape with a cross-sectional area gradually increasing from the outer periphery of the second bottom surface 21 toward the second opening surface 27. The opening area of ​​the second opening surface 27 is larger than the bottom area of ​​the second bottom surface 21, and the second side surface 22 has an inclination angle expanding upward. However, although not shown, the second side surface can be a vertical surface.

[0039] 4, when the second container 2 is set in the first container 1, the second side surface 22 is partially exposed from the first opening surface 17. Compared to a container in which the first opening surface 17 and the second opening surface 27 are flush or nearly flush with each other, the capacity of the second container 2 can be increased by the amount exposed upward from the first opening surface 17. Moreover, the capacity of the second container 2 can be increased without reducing the capacity of the first container 1 by the amount exposed upward from the first opening surface 17.

[0040] The exposed height 22A of the second side surface 22 where the second container 2 is exposed from the first side surface 12 is preferably 1 cm or more, more preferably 1.5 cm or more. The cylindrical exposed height 22A having a certain height (width) is exposed, which can improve the strength and stability of the entire food container 100 in which the second container 2 is set. The three-dimensional shape of the second container 2 is basically maintained by the second side surface 22 and the second bottom surface 21, and in addition, the second side surface 22 is reinforced by the uneven portion 23, the exposed height 22A, the second fitting portion 29 (second fitting structures 29A, 29B) that sandwich the exposed height 22A from above and below, and the second flange 26. This is because the cylindrical exposed height 22A having a certain height and width, together with the second fitting portion 29, contributes to improving the strength of the upper portion of the second container 2.

[0041] In the case of a conventional food container 900 (FIG. 9), the inner plate container 902 (second container) is completely embedded in the bottom container 901 (first container), and the strength of the upper part of the inner plate container 902 is insufficient. When the inner plate container 902 is set in the bottom container 901, the upper part of the inner plate container 902 is twisted and bent, and when the inner plate container 902 is pushed in, the inner plate container 902 rotates (rolls) with part of it inside, and the force to push the inner plate container 902 to set it is not transmitted efficiently and the inner plate container 902 may not fit properly. In this case, the inner plate container 902 needs to be pushed in at two or more positions separated from the periphery in order to set and fit it, and this requires force. The higher the sealing degree of the inner plate container 902, the more prominent this problem becomes, and setting the inner plate container 902 requires time and effort, which causes stress and reduces work efficiency. The same is true when the inner plate container 902 is closed with the lid 903, and the lid closing operation cannot be performed efficiently. In contrast, the second container 2, in which the cylindrical exposed height 22A is exposed from the first container 1, has the cylindrical exposed height 22A above the center of the second side surface 22 with which the first inner diameter 18 contacts, and the strength of the upper part is improved. This prevents and suppresses twisting, bending, and deformation of the second container 2, prevents rotation and rolling, and efficiently transmits the force of pushing the second container 2 to the first container to fit and set it, allowing the second container 2 to be set simply, easily, quickly, and without stress, and improving the efficiency of the setting operation. The lid closing operation for the second container 2 can also be performed efficiently.

[0042] As shown in FIG. 4, the second container 2 is set by being partially embedded and accommodated in the first container 1. The second container 2 is set at a position where the first opening surface 17 (the upper end of the first side surface 12) contacts the center of the second side surface 22. Therefore, the second bottom surface 21 is smaller than the first inner diameter 18. Also, when the second side surface 22 has a constant upward spreading gradient, excluding the uneven portion 23, the second inner diameter 28 is larger than the first inner diameter 18. By matching the outer shape of the second side surface 22 to the inner shape of the first side surface 12, the second container 2 can be set at a predetermined position and posture in the first container 1, and the first container 1 can stably support and hold the second container 2 by preventing the second container 2 from shifting, tilting, or rotating. When the second container 2 is set, the second bottom surface 21 is positioned lower than the first opening surface 17, and the first side surface 12 on the outside and the second side surface 22 on the inside overlap, so that the first side surface 12 can stably support the second container 2. Furthermore, the contents are contained in the second container 2, lowering the center of gravity.

[0043] The second side surface 22 of the second container 2 may also be provided with an uneven portion 23, similar to the first side surface 12. As an example, the second container 2 in FIG. 2 is provided with uneven portions 23a and 23b of steps extending horizontally in the middle of the second side surface 22, uneven portion 23c of steps extending horizontally above the second side surface 22, and uneven portion 23d of an inwardly convex shape extending vertically. For example, the uneven portions 23a and 23b are arranged above and below the second fitting structure 29A, and the strength of the center portion of the second side surface 22 is improved by the two adjacent steps. The uneven portion 13c improves the strength of the vicinity of the second opening surface 27 together with the second fitting structure 29B. The uneven portion 23d improves the strength of the center and lower portion of the second side surface 22, and is provided for adjusting the transfer of steam and heat in the first container 1. The uneven portion 23d can adjust the transfer of steam and heat in the first container 1. With the second container 2 set, the first side surface 12 is disposed in contact with or in close proximity to the inside of the second side surface 22, and a gap is formed between the first side surface 12 and the second side surface 22 by the uneven portions 13, 23 (e.g., 23d, 13e) on both or one of the first side surface 12 and the second side surface 22, allowing the space of the first container 1 to be extended to the second side surface 22, enabling the transfer of heat from the steam of the contents inside the first container 1, and enabling the transfer of heat from the outside of the second side surface 22. Note that the shape and size of the uneven portions 23 are not limited to those shown in the figures, as in the above.

[0044] The second container 2 has a second fitting portion 29 that fits into the first container 1 and the lid 3. The second fitting portion 29 in FIG. 5 has a second closing structure 29A that fits into and closes the first opening surface 17 in the middle of the second side surface 22, and a second closing structure 29B that fits into and closes the second opening surface 27 with the lid 3. The second fitting portion 29 can have an angle and gradient different from that of the second side surface 22. For example, in FIG. 5, the second side surface 22 has an upwardly expanding inclination, and the second closing structures 29A and 29B are tapered surfaces that expand downward in the opposite direction to the second side surface 22. These second closing structures 29A and 29B can reliably fit members that have been once fitted into them. In the figure, the second fitting structure 29A and the first fitting portion 19 can be reliably fitted into each other to improve the degree of sealing, and the second closing structure 29B and the lid fitting portion 39 (second wall 39b) can be reliably fitted into each other to improve the degree of sealing. Although not shown, the second side surface can be inclined to widen upward, and the second fitting portion can be a vertical surface. The second fitting portion 29 in Fig. 2 has steps of uneven portions 23a, 23b, and 23c adjacent thereto. For example, the second fitting structure 29A, together with the steps of the uneven portions 23a and 23b arranged above and below it, improves the strength of the second side surface 22, and can improve the degree of fitting and sealing together with the second fitting structure 29A and the member to be fitted (first fitting portion 19).

[0045] The ratio of the height of the second side surface 22 to the height of the first side surface 12 is preferably 0.2 to 1.5, more preferably 0.3 to 1. The ratio of the exposed height 22A of the second side surface 22 to the height of the first side surface 12 is preferably 0.1 to 0.5. The ratio of the exposed height 22A to the height of the second side surface 22 is preferably 0.1 to 0.7. The heights of the first side surface 12 and the second side surface 22 and the exposed height 22A must ensure that the first container 1 and the second container 2 have a capacity according to the amount and mass of the contents to be stored in each container, and must maintain stability and overall balance when the second container 2 is set. The exposed height 22A must be within an appropriate range, taking into account the thickness of the container sheet, the strength of the second side surface 22, the ease of setting and removing the second container 2, the ease of opening and closing the lid 3, and the fitting, sealing, and strength of the parts that are fitted together.

[0046] The second container 2 can be provided with one or more openings 24 such as cuts 24a, holes, slits, etc. The openings 24 can move, flow, and take in steam and heat from the first container 1 into the second container 2, thereby keeping the contents in the second container 2 warm and moist. For example, the second container 2 in FIG. 2 has a U-shaped cut 24a partially provided in the second bottom surface 21. Steam and heat from the lower first container 1 can be moved into the upper second container 2 through the U-shaped cut 24a in the second bottom surface 21, so that the contents in the second container 2 can be kept warm and moist. The U-shaped cut 24a can be changed in its bending angle to change and adjust its opening area. Although not shown, by distributing a plurality of cuts or other openings, it is possible to keep the contents warm and moist without bias. For example, the noodles in the second container 2 can be steamed evenly with the steam and heat of the liquid soup in the first container 1. The amount of steam and heat transferred from the first container 1 to the second container 2 can be adjusted by the shape, size, arrangement, number, etc. of the openings 24. Providing opening 24 in a location other than near the periphery of second bottom surface 21 can prevent liquid leakage from opening 24, for example, when the container is shaken or tilted during transportation. Providing opening 24 in the vicinity of the center of second bottom surface 21 can prevent liquid leakage even if the container is significantly shaken or tilted. The shape, size, arrangement, number, etc. of the openings are not limited to those shown in the figures.

[0047] The second side surface 22 in FIG. 2 has a second flange 26. The second flange 26 is a brim portion formed by extending outward from the periphery of the second side surface 22. The second flange 26 is connected to the upper end of the second side surface 22 approximately perpendicular to the second side surface 22 along the outer periphery of the second opening surface 27. The second flange 26 can be a flat surface having a certain width, a curved surface, or a combination of a flat surface and a curved surface. The second flange 26 reinforces the upper part of the second side surface 22 by preventing bending, distortion, and deformation, and improves the shape retention and strength of the entire second container 2. The second flange 26 improves the strength along the outer periphery of the second opening surface 27 above the second side surface 22, and improves the fitting strength, adhesion, and degree of sealing between the first container 1 and the second container 2 or the lid 3. The second flange 26 makes it easy to push the second container 2 into the first container 1 when setting the second container 2, makes it easy to fit by efficiently transmitting force, and makes it easy to set the second container 2 into the first container 1.

[0048] The second container 2 may be provided with one or more handles 26a. The second flange 26 in Fig. 2 is provided with the handle 26a. The handle 26a is easy to hold with fingers or to hook with fingers, making it easy to remove the second container 2 set in the first container 1 or the lid 3 closing the second container 2. It also makes it easy to set the second container 2. The shapes of the second flange 26 and the handle 26a are not particularly limited. (Lid 3)

[0049] The lid 3 closes either the first opening surface 17 of the first container 1 or the second opening surface 27 of the second container 2. The lid 3 includes a top surface portion 31 and a lid fitting portion 39. The lid 3 can be detachably fitted to the second container 2 to close the second opening surface 27 as shown in FIG. 4, or can be detachably fitted to the first container 1 to close the first opening surface 17 as shown in FIG. 7. In this way, the first container 1 and the second container 2 can be closed using the common lid 3 without preparing dedicated lids for each of the first container 1 and the second container 2, thereby improving convenience.

[0050] The lid 3 in FIG. 3 has a top surface portion 31 and a lid peripheral portion 32 around the top surface portion. The lid peripheral portion 32 has a lid fitting portion 39 that fits into either the first opening surface 17 or the second opening surface 27 to close the top surface, and a lid flange 36 on the periphery of the lid fitting portion 39. The lid fitting portion 39 has a first wall 39a that fits into the first inner diameter 18 of the first opening surface 17 and a second wall 39b that fits into the second inner diameter 28 of the second opening surface 27. In the case of the circular lid 3 shown in FIG. 2, the lid fitting portion 39 has the first wall 39a and the second wall 39b arranged concentrically. The lid 3 in FIG. 3 fits into the second opening surface 27 to close the second container 2. The lid 3 can also fit into the first opening surface 17 to close the first container 1. As shown in FIG. 3, it is preferable to provide the first wall 39a and the second wall 39b separately, but the lid 3 does not close the first opening surface 17 and the second opening surface 27 at the same time. Although not shown, the first wall and the second wall can be provided continuously, and a wall having a shape that serves as both the first wall and the second wall can also be used.

[0051] The lid 3 in FIG. 5 has a first wall 39a that fits with the first inner diameter 18 and a second wall 39b that fits with the second inner diameter 28, which are concentrically provided on the lid peripheral portion 32. The lid 3 in FIG. 5 is formed from its peripheral portion with a lid flange 36, a second wall 39b formed in a stepped shape from the lid flange 36, and a first wall 39a formed in a stepped shape from the second wall portion 39b. The first wall 39a and the second wall 39b are formed in shapes and angles that match the first fitting portion 19 and the second fitting portion 29 (second fitting structure 29B) that are fitted to them, respectively. The first wall 39a and the second wall 39b in FIG. 5 are both surfaces that are inclined downward. The lid peripheral portion 32 in FIG. 5 has the lid flange 36, the first wall 39a, and the second wall 39b formed in a stepped shape close to each other to improve its strength. This lid peripheral portion 32 can prevent and suppress twisting, bending, and deformation of the lid 3 when the lid 3 is fitted and closed. The lid peripheral portion 32 prevents rolling, in which part of the pushed-in lid 3 rotates while part does not enter the second opening surface 27, and can efficiently transmit the force of pushing the lid 3 to fitting and closing the second container 2, allowing the lid 3 to be closed simply, easily, quickly, and without stress, improving the efficiency of the lid closing operation. The efficiency of the lid closing operation on the first container 1 can also be improved in the same way.

[0052] The lid 3 in FIG. 4 fits into the second opening surface 27 to close it. The lid 3 has a perfect circular shape in a plan view, and fits into the second container 2. The fit is achieved by abutting the inner surface of the second side surface 22 and the outer surface of the second wall 39b. The fit is more effective at preventing liquid leakage than the outer fit, and allows the outer periphery to be made small and compact. The lid fitting portion 39, like the first fitting portion 19 and the second fitting portion 29, can improve the strength, blocking property, and degree of adhesion between the fitted portions.

[0053] The lid 3 has a recess 37 that forms an opening 38. The lid 3 can be provided with one or more recesses 37 on at least a part of the periphery facing the second opening surface 27 of the second container 2. The recess 37 vents through the opening 38. The recess 37 is provided on the lid peripheral portion 32. The opening 38 of the recess 37 serves as an air hole, allowing steam and heat in the internal space blocked by the lid 3 to be discharged and moved to the outside. The lid 3 having the recess 37 blocks the second container 2 or the first container 1, but does not seal it. The lid 3 forms the recess 37 on at least a part of the periphery facing the second opening surface 27 of the second container 2. The recess 37 in FIG. 8 has a concave recess in the stepped lid fitting portion 39. The recess 37 forms an air passage and allows ventilation. The recess 37 allows steam in the space blocked by the lid 3 to be discharged to the outside. The recess 37 in FIG. 8 has a convex shape formed on the upper side of the lid flange 36, an upward recess on the inside of the convex shape (as viewed from the underside of the lid flange 36), and a recess toward the center on the first wall 39a and the second wall 39b. The recess 37 ventilates the first container 1 or the second container 2 closed by the lid 3, and discharges steam and heat to the outside, thereby moving the steam and heat and adjusting the heat retention and moisture retention inside the container. The recess 37 in FIG. 2 allows the contents in the first container 1, for example, the steam and heat of high-temperature liquid soup, to proceed into the upper second container 2, and discharges them to the outside while adjusting the heat retention and moisture retention. By discharging steam from the recess 37, the steam and heat inside the container can be guided upward, and for example, the heat and steam of the liquid soup in the lower first container 1 can warm (keep warm) and moisturize the noodles in the upper second container 2, thereby preventing and suppressing deterioration of flavor, taste, and texture. In addition, the recesses 37 can exhaust internal steam to the outside and prevent the lid 3 from being opened due to the built-up steam. In addition, the convex recesses 37 on the upper side of the lid flange 36 can maintain the closing and sealing properties of the lid flange 36. The multiple recesses 37 can distribute ventilation and exhaust steam.

[0054] The recess 37 is ventilated to exhaust steam, but has an appropriate opening area to prevent liquid from leaking out even if the container is temporarily tilted or the liquid level in the container is swayed. The recess 37 is preferably as small in opening area as possible to prevent liquid from leaking out and to effectively utilize the steam and heat in the container to keep the contents warm and moist. Although not shown, the lid can also be provided with fine holes.

[0055] The lid 3 has a lid flange 36 and opens on the side. As shown in the plan view of FIG. 8, the recess 37 forms an opening 38 on the side of the lid 3. The recess 37 opens the opening 38 in the horizontal outward direction. The recess 37 can reliably prevent foreign matter such as dust, dirt, and insects from entering through the top surface of the lid. A lid with an opening or hole on the top surface cannot prevent foreign matter from entering through the top surface. In particular, in the case of take-out containers, which are more likely to be contaminated than in-store containers, measures against foreign matter entry are important. The recess 37 provides an opening 38 on the side surface of the lid 3, and the opening 38 is made small, thereby reducing the possibility of foreign matter entering and preventing it. Furthermore, the steam and heat emitted from inside the container can also prevent foreign matter from entering. For example, recess 37 formed in lid flange 36 in Fig. 8, which forms opening 38 on the side of lid 3, is breathable and can discharge steam and heat, but is easy to form a small opening size and shape that can prevent liquid leakage. A small opening can prevent foreign matter from entering, including the side of lid 3. The shape of recess 37 is not limited as long as opening 38 is breathable. The cross-sectional shape can be formed as a curved surface such as a semicircle or triangle, a flat surface, or a combination of these.

[0056] The recess 37 simplifies and improves the efficiency of the lid closing operation. This is because the recess 37 allows ventilation, so that the lid 3 can be easily fitted and closed even if the lid 3 has a good sealing performance due to the lid flange 36. In addition, the presence of the recess 37 allows the lid peripheral portion 32 to expand and contract in the circumferential direction (tangential direction). The recess 37 is formed along the stepped lid peripheral portion 32 and extends in a stepped manner from the outer edge of the lid flange 36 toward the center. The recess 37 in the schematic perspective view of FIG. 8 has a recess 37a that is convex upward from the lid flange 36 (concave on the opposite side), a recess 37b that is concave with the second wall 39b inward, a recess 37c that is convex upward from a horizontal plane one step below the lid flange 36 (concave on the opposite side), and a recess 37d that is concave with the first wall 39a inward. A concave shape is formed along the four stepped surfaces of the recesses 37a, 37b, 37c, and 37d. The presence of the recess 37 prevents deformation such as bending or twisting of the lid 3, improving the strength of the lid peripheral portion 32; the force applied to close the lid escapes and is not transmitted to the lid, preventing the lid from rotating or rolling, making it possible to close the lid simply, easily, stress-free and quickly, and making the lid closing operation easier, more labor-saving and more efficient.

[0057] The lid flange 36, like the first flange 16 and the second flange 26, can improve the strength of the lid 3 and increase the fitting strength as well as the sealing and airtightness. As shown in FIG. 4, when the second container 2 is closed with the lid 3, the lower surface of the lid flange 36 comes into surface contact with the upper surface of the second flange 26, improving the sealing of the contacting surface. The lid 3 can be provided with one or more handles 36a, like the first container 1 and the second container 2. The lid 3 in FIG. 2 is provided with the handle 36a on the lid flange 36. The handle 36a is easy to hold with fingers and to hook with fingers, making it easy to open and close the lid 3. Once the lid 3 is fitted and closed, it is difficult to remove, but the handle 36a can be used as a trigger to easily remove and open it. The lid flange 36 can be provided with an uneven portion 36b. The lid flange 36 in Figures 2 and 5 has an uneven portion 36b on the handle 36a, so that even when the handle 36a overlaps with the handle 26a of the second container 2, a gap is created between the tips of the handles 36a, 26a, making it easy to pinch with fingers or to hook fingers thereon, making it easy to open the lid 3.

[0058] When the second container 2 is set in the first container 1 or when the lid 3 is closed, the first container 1, the second container 2, and the lid 3 can be rotatably fitted together. For example, by aligning the positions of the handles 16a, 26a, and 36a of the first container 1, the second container 2, and the lid 3, respectively, it is possible to prevent them from getting in the way during transportation or storage, and when removing or separating each of them, it is possible to more easily open the lid 3 and remove the second container 2 from the first container 1 by shifting each handle to a different position.

[0059] The lid 3 can be provided with an uneven portion 33, similar to the first container 1 and the second container 2. The uneven portion 33 can improve the strength of the lid 3, facilitate opening and closing of the lid 3, and enhance the design and aesthetic appeal. For example, the lid 3 in Fig. 2 has an uneven portion 33a at the boundary between the top surface portion 31 and the lid peripheral portion 32, and a plurality of outer convex uneven portions 33b extending up and down on the central surface facing the lid fitting portion 39.

[0060] The lid 3 can be fitted into the first opening surface 17 to close the first container 1. As shown in Figs. 6 and 7, the food container 100 can be fitted into the first opening surface 17 to close the first container 1 without the second container 2. For example, the food container 100 can be used with the first container 1 and the lid 3 without using the second container 2. The food container 100 can also be used as the first container 1 and the lid 3 that closes it by storing the contents separately in the first container 1 and the second container 2, and then placing the contents of the second container 2 on the contents of the first container 1 or mixing them together just before eating. Although not shown, the second container may be used as a serving plate or the like. [Industrial Applicability]

[0061] The food container of the present disclosure can be suitably used as a food container that can be stored separately into a first container and a second container, with each container having a large storage space. [Explanation of symbols]

[0062] 100, 900...Food containers 1...First container 2...Second container 3…Lid 11…First bottom surface 12…First aspect 13, 13a, 13b, 13c, 13d, 13e...Uneven parts 15, 15a, 15b, 15c...quantity recognition line 16…First flange 16a…Handle 17...First opening surface 18...First inner diameter 19…First fitting portion 21…Second bottom surface 22…Second side 22A…Exposed height 23, 23a, 23b, 23c, 23d...Uneven parts 24…Aperture 24a…Cut 26...Second flange 26a…Handle 27…Second opening surface 28…Second inner diameter 29…Second fitting portion 29A…Second mating structure 29B…Second mating structure 31...Top section 32... Lid edge 33, 33a, 33b...Uneven parts 36…Cover flange 36a…Handle 36b…Uneven part 37…Recess 38…Aperture 39...Lid fitting part 39a…first wall 39b…Second wall 901…Bottom container 902…medium-sized plate container 903…Lid

Claims

1. A first container having a first bottom surface and a first side surface and a first opening surface that is open at the top surface; a second container having a second bottom surface and a second side surface, a second opening surface having an open top surface, and the second side surface being partially exposed from the first container when the second container is set on the first opening surface; a cover that can be fitted to close either the first opening surface or the second opening surface; A food container comprising: a second inner diameter of the second opening surface is greater than a first inner diameter of the first opening surface; The lid is A first wall that fits into the first inner diameter; A food container having a second wall that fits into the second inner diameter.

2. 2. The food container according to claim 1, The food container is configured so that the lid can be fitted to the first opening surface to close it.

3. 2. The food container according to claim 1, The lid is The second wall is formed in a stepped shape from its periphery; The first wall is formed in a stepped shape from the second wall portion; A food container formed by:

4. 2. The food container according to claim 1, The second container is a food container having a second closing structure provided in the middle of the second side surface to fit over and close the first opening surface.

5. 2. The food container according to claim 1, The lid is a food container having a flange opening on the side.

6. 2. The food container according to claim 1, The second container has a second bottom surface partially formed with a U-shaped cut, The lid is a food container having a recess formed in at least a portion of a peripheral edge facing the second opening surface of the second container.

7. A food container according to any one of claims 1 to 6, A food container wherein the first side has an uneven portion.

8. 8. The food container according to claim 7, The first container is a space for containing soup, A food container wherein the second container is a space for containing noodles or toppings.

Images