JP3451051B2 - Food storage containers - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food storage container, and more particularly, to a food storage container in which both sides of a lid can be fitted to a container body and a food can be stored in a refrigerator. The present invention relates to a food storage container suitable for storing in a food container. [0002] In a refrigerator, there are two main methods for storing foods such as rice, side dishes and various seasonings, such as refrigerated storage and frozen storage. Either way, if you put it in the refrigerator as it is, it will smell inside the refrigerator and the food may dry or discolor, so wrap it with a wrap film or put it in a container with a lid I have. [0003] According to the wrap film, the food to be preserved can be wrapped with good airtightness while allowing air to escape. For this reason, the wrap film is used regardless of whether it is frozen or refrigerated, but it takes time and effort to wrap and peel, and the refrigerator is cluttered and difficult to organize. In this respect, the container can be easily opened and closed, and can be stored neatly in the refrigerator. However, when storing in a container, the first problem is the size (internal volume) of the container. [0005] For example, when the remaining rice or the like is put into a large container for freezing and preservation, the heat transfer efficiency is deteriorated due to the presence of many air layers in the container. It takes. Further, water contained in air is condensed, and the water droplets adhere to food, which is not preferable. On the other hand, when vegetables and the like are to be stored in a container and refrigerated and stored, if the contents exceeding the inner volume of the container are stored, a compression mark or the like is formed on the surface and the surface is easily damaged, and the appearance is poor. turn into. SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a container in which both the front and back surfaces of a lid are hermetically sealed with respect to a container body. An object of the present invention is to provide a food storage container that can be fitted and that can change the internal volume according to the amount of food to be stored. [0008] To achieve the above object, the present invention provides:
The upper surface is open, in a food storage container including a container body in which food such as cooked rice is stored, and a lid that covers the opening of the container body, an inner peripheral surface of the opening of the container body is provided. A step groove having an inclined surface that is reversely tapered when viewed from the bottom side of the container body is formed over the entire circumference, and an outwardly projecting flange is formed over the entire circumference at the opening edge of the container body. A first fitting portion, which is continuously provided, and the lid body has a shape that matches the shape of the step groove, and can be fitted airtightly with elastic deformation in the step groove;
A second fitting portion which is formed so as to have an inverse taper with respect to the outer peripheral edge of the flange, and which can be fitted airtightly with elastic deformation to the outer peripheral edge of the flange; When the first fitting portion is airtightly fitted in the step groove when one surface is placed on the container body with one surface as the back, and when the first surface is placed on the container body with the one surface facing up, together with the second fitting portion is airtightly fitted to the outer peripheral edge of the flange, the one surface side of the lid, the hula
It is formed in an annular shape so that it can closely contact the surface
A first convex surface, and the whole inside the first convex surface is higher than the first convex surface
At least two of the second convex surfaces formed at positions one step higher
A convex portion bulging outwardly including the convex surface of the first convex surface and the first convex surface.
The first fitting portion is formed between the first fitting portion and the second convex surface.
The second fitting portion is formed on the outer peripheral side of the convex surface, and when fitted with the one surface as the back, the entire second convex surface protrudes inside the container body, and When the first surface is fitted as a front surface, the entire second convex surface projects outside the container body from the opening. According to this configuration, even if the lid is on the front side,
Further, it is possible to put hermetically to the container body as the back, one side of the lid convex outwardly
The other surface is concave inward .
Therefore, it is possible to distinguish the same container together with good small containers and large containers airtight. Further, on the bottom center of the container main body, only recess settings that recessed toward the inside of the container body, the central portion of the lid, protrusions enter into the said recess is formed, said food When the storage containers are stacked, the concave portion and the convex portion may be fitted . According to this, when a plurality of food storage containers are stacked and stored, it is possible to prevent the containers from shifting or moving. In the present invention, the container body and the lid are formed of a heat-resistant soft synthetic resin .
DOO is preferred, according to this, it is possible to even reverse tapered portion easily molded. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view when the food storage container according to this embodiment is used with its lid turned upside down, and FIG. 2 is an exploded perspective view when the lid is used with its lid turned upside down, contrary to FIG. FIG. The food storage container 1 includes a container body 2 having an open upper surface, and a lid 3 that covers the opening of the container body 2. In this embodiment, the container body 2 is shown as a rectangular box, but may be cylindrical or elliptical. The container body 2 and the lid 3 are both formed of a heat-resistant soft synthetic resin such as polypropylene, for example. The container body 2 has a storage portion 21 of a predetermined depth for storing foods (not shown). I have. A recess 24 is formed in the center of the bottom surface of the storage section 21 and is recessed from below into the storage section 21 (see FIGS. 5 and 6). At the inner peripheral edge of the opening of the container body 2, a step groove 2 is formed.
2 are formed over the entire circumference. This step groove 2
As shown in the enlarged sectional view of FIG. 3, reference numeral 2 includes an inclined surface 22a having an inverse taper when viewed from the bottom side of the container body 2. In this embodiment, the inclination angle θ of the inclined surface 22a is about 9 ° with respect to the vertical surface. At the edge of the opening of the container body 2, that is, at the upper end of the inclined surface 22a, a flange 2 is bent substantially at right angles to the inclined surface 22a and projects outward.
3 are integrally provided over the entire circumference. in this case,
The free end 23a side of the flange 23 is bent substantially in an L shape so as to be lower by one step. In this embodiment, the lid 3 includes three surfaces having different heights in a stepwise manner when viewed from the container body 2 side. That is, as shown in the exploded perspective view of FIG. 2 and the use state diagram of FIG. 6, when the lid 3 is on the front side, the position of the flange 30 formed on the outermost periphery will be described as a reference. A first convex surface 31 which is one step higher than that is formed in an annular shape with a predetermined width. On the inner side of the first convex surface 31, a second convex surface 32 having a predetermined width is formed so as to be higher by one step and to enter the container body 2. Further, a third step higher than the third step is provided inside the second convex surface 32.
A convex surface 33 is formed. In this manner, the lid 3 is provided with the first to third convex surfaces 31 to 33 having different heights in a stepwise manner. FIG. 4 is an enlarged sectional view of a main part of the cover 3 turned upside down. The gap between the first convex surface 31 and the second convex surface 32 matches the shape of the step groove 22a. Step groove 22
A first fitting portion 32a that can be fitted in an airtight manner with elastic deformation is formed in a. The outer peripheral edge of the flange 23 on the side of the container body 2 is also formed between the flange 30 and the first convex surface 31 so as to have an inverse taper. Second fitting portion 3 that can be fitted airtightly
1a is formed. Next, an example of use of the food storage container 1 will be described. According to the food storage container 1, the lid 3 is
The front and back surfaces can be fitted airtightly to the container body 2. First, the case where the lid 3 is used upside down will be described with reference to FIG. This is an example of use suitable for frozen storage.
A food to be stored, for example, rice S1, is placed in the storage section 21 of the container body 2. At this time, the rice S1 may be packed slightly larger than the capacity of the storage section 21. Then, the lid 3 is turned over so that the convex surfaces 31 to 33 face downward, and a force is applied to cover the opening of the container body 2. As a result, the first fitting portion 32a is airtightly fitted into the step groove 22 of the container body 2 while being elastically deformed, and the first convex surface 31 is in close contact with the flange 23 of the container body 2 in a planar manner. In this case, before an airtight fit is achieved,
Since the rice S1 is appropriately compressed by the second convex surface 32 and the third convex surface 33, a part of the air present therein is discharged to the outside of the container. Therefore, it can be said that it is suitable for frozen storage. Further, as shown in FIG. 6, the food storage container 1 has an inner volume that is reduced by covering the container body 2 with the lid 3 so that the convex surfaces 31 to 33 face upward. Can be used larger. In this case, instead of the first fitting portion 32a, the second fitting portion 31a is fitted airtightly to the outer peripheral edge of the flange 23 of the container body 2. Therefore, vegetables S2 and the like having a relatively large volume can be stored without being pressed by the increased internal volume, which is suitable for refrigerated storage of vegetables S2 and the like. In any of the usage examples, the food storage containers 1 can be stacked neatly without any deviation. That is, in the case of the use example of FIG. 5, the bottom portion of the container main body 2 of the food storage container 1 stacked thereon enters the anti-convex surface side of the lid 3 of the food storage container 1 therebelow, causing a shift. Absent. In the case of the use example shown in FIG. 6, as shown in FIG. 7, the food storage container 1 is placed in the recess 24 of the container main body 2 of the food storage container 1 stacked thereon. Since the third convex surface 33 of the first lid 3 is fitted, no displacement occurs. In the above embodiment, the objects S1, S2
Although rice and vegetables are assumed to be used, soups such as curry may also be stored, and the storage is not particularly limited. Further, the food storage container 1 can be used as a lunch box or the like, and its use is not limited to frozen storage or refrigerated storage. As described above, according to the present invention,
Both the front and back surfaces of the lid can be airtightly fitted to the opening of the container body. In addition, the size of the internal volume can be changed accordingly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a first combination example of a container body and a lid of a food storage container according to one embodiment of the present invention. FIG. 2 is an exploded perspective view showing a second combination example of the container main body and the lid of the food storage container. FIG. 3 is an enlarged sectional view of a main part of the container main body. FIG. 4 is an enlarged sectional view of a main part of the lid. FIG. 5 is a side view showing a first use example of the food storage container in a partial cross section. FIG. 6 is a side view showing a second use example of the food storage container in a partial cross section. FIG. 7 is a side view showing a state where the food storage containers are stacked. [Description of Signs] 1 Food storage container 2 Container main body 21 Storage section 22 Step groove 22a Inclined surface 23 Flange 3 Cover 31 First convex surface 31a Second fitting portion 32 Second convex surface 32a First fitting portion 33 Third convex surface S1, S2 Items to be stored

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-323743 (JP, A) JP-A-10-264951 (JP, A) JP-A-7-156336 (JP, A) JP-A 8- 244808 (JP, A) Japanese Utility Model 7-19149 (JP, U) Japanese Utility Model 7-26354 (JP, U) Registered Utility Model 3012016 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 21/00 B65D 77/00 B65D 43/00

Claims (1)

(57) [Claims 1] A food product having a container body which is open at the top and stores food such as cooked rice therein, and a lid which covers an opening of the container body. In the storage container, a step groove having an inclined surface having an inversely tapered shape as viewed from the bottom side of the container body is formed on the entire inner peripheral surface of the opening of the container body, and the opening of the container body is formed. An outwardly protruding flange is provided at the end edge over the entire circumference, and the lid body conforms in shape to the step groove, and fits airtightly in the same step groove with elastic deformation. A first fitting portion that can be fitted, and a second fitting that is formed so as to have an inverse taper with respect to the outer peripheral edge of the flange, and that can be airtightly fitted to the outer peripheral edge of the flange with elastic deformation. And the lid is placed on the container body with one side of the lid as a back side. Air, the first fitting portion in the stepped groove when Serra
When fitted tightly, and conversely, when the one surface is put on the container main body with the one surface facing up, the second fitting portion is fitted airtightly to the outer peripheral edge of the flange, and One surface side can be in close contact with the flange.
A first convex surface formed in an annular shape as described above, and the inside of the first convex surface
The second is formed at a position one step higher than the first convex surface as a whole.
A convex portion bulging outward including at least two convex surfaces of the convex surface, and the other surface side is concaved along with the convex portion, and the first fitting between the first convex surface and the second convex surface is performed.
The second fitting portion is formed on the outer peripheral side of the first convex surface.
Is formed, and when the above one side is fitted with the back side,
When the entire second convex surface protrudes inside the container main body and the one surface is fitted as a front, the second convex surface
A food storage container, wherein the whole projects outside the container main body from the opening.