A food container
By integrating vents into the contact area of the food container and utilizing a seal or elastic sealing strip design, the problem of difficulty in opening the lid under negative pressure is solved, simplifying the structure, reducing costs, and improving ease of cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YOUHE INTERNET (XIAMEN) HOME TECHNOLOGY CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-03
AI Technical Summary
Existing food containers are difficult to open under negative pressure, making it difficult to open the lid. Furthermore, the pressure relief components are complex in structure, costly, difficult to clean, and pose hygiene risks.
Vent holes are integrated into the contact area of the housing, and seals or elastic sealing strips are used to block or open the vent holes to achieve rapid pressure relief. Combined with snap-on support arms and mounting groove design, the structure is simplified and reliability is improved.
It achieves rapid decompression while maintaining sealing performance, making it easy to open the lid, reducing production costs, avoiding small gaps and hygiene hazards, and improving cleaning convenience.
Smart Images

Figure CN224448769U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of container technology, and more specifically, to a food container. Background Technology
[0002] In existing technology, food containers typically consist of a body and a lid. An elastic sealing ring is installed inside the lid, which is pressed tightly against the opening of the body using snaps or threads, thus achieving a seal for preservation and preventing leakage. However, when food is placed inside the container (especially hot food), negative pressure is created inside as the food cools, causing the lid to "seal" shut and become difficult to open. To solve this problem, the current mainstream approach is to add a pressure relief valve or button to the lid, requiring manual pressing of the button before use to break the negative pressure and open the lid. This structure has the following drawbacks:
[0003] Increased costs: The pressure relief assembly consists of multiple parts such as valve body, spring, gasket, and button. The mold is complex and the assembly time is long, resulting in increased material and labor costs.
[0004] Difficult to clean: There are small gaps between the pressure relief button and the cover, which can easily trap dirt and grime, posing a hygiene hazard with long-term use;
[0005] Reliability issues: When the spring ages or the gasket wears down, the seal may fail, leading to internal liquid leakage. Utility Model Content
[0006] In view of this, the purpose of this utility model is to provide a food container to solve the above problems.
[0007] The present invention adopts the following solution:
[0008] This application provides a food container, which includes a box body with an opening and a lid. The lid has a sealing element, which seals the food in the box body. The box body has a vent hole. When the lid is fastened to the box body, the sealing element and the box body form a contact area. The vent hole is located in the contact area and is either blocked or opened by the sealing element.
[0009] Furthermore, the lid is provided with snap-on arms on both sides, and the ends of the snap-on arms are fastened to the bottom of the box body and cover the vent hole to prevent dirt from entering the box body through the vent hole.
[0010] Furthermore, the box body is provided with a mounting groove for accommodating the buckle arm, and the vent is located in the mounting groove. When the box cover is fastened to the box body, the buckle arm is in the mounting groove, and its surface is flush with the peripheral surface of the box body.
[0011] Furthermore, there are multiple vent holes distributed in the contact area, and the distances from the opening are not all the same.
[0012] Furthermore, the distance between the vent and the opening is between 1mm and 6mm.
[0013] Furthermore, the box cover is provided with an annular groove, and the sealing element includes a sealing element body installed in the groove and a sealing bevel connected to the sealing element body. The sealing bevel cooperates with the vent hole to achieve a seal.
[0014] Furthermore, the vent is funnel-shaped from the outside in, and the sealing bevel matches the small opening of the funnel.
[0015] Furthermore, the lid has a snap-fit part in the middle, which is used to hold tableware.
[0016] By adopting the above technical solution, the present invention can achieve the following technical effects:
[0017] 1. This solution integrates the vent into the contact area of the box body and uses the sealing element for sealing, which results in a simple structure, high reliability and reduced cost;
[0018] 2. This design features ventilation holes spaced at different intervals in the contact area, enabling the negative pressure to be quickly broken before the lid is fully opened while maintaining the sealing performance. This allows for easy and effortless opening of the lid.
[0019] 3. The integrated design of the vent and the box body avoids the small gaps between components in conventional pressure relief valves, making it easy to clean and eliminating hygiene risks.
[0020] This application also provides a food container, which includes a box body with an opening and a lid. The lid has a sealing element that seals the food in the box body. The container also includes an elastic sealing strip. When the lid is fastened to the box body, one end of the elastic sealing strip is fixed to the lid, and the other end is detachably fixed to the lid after passing around the bottom of the box body. The elastic sealing strip forms a contact area with the box body. The box body has a vent hole located in the contact area and is either blocked or opened by the elastic sealing strip.
[0021] Furthermore, there are multiple vent holes distributed at different locations in the contact area.
[0022] By adopting the above technical solution, the present invention can achieve the following technical effects:
[0023] 1. The elastic sealing strip not only blocks the vent hole to seal the box body, but also allows the container to release pressure and open the lid easily when negative pressure is generated in the food container;
[0024] 2. The lid is fastened to the box body by the elastic sealing strip. The lid and the box body are connected by a snap-fit, which can prevent the lid from falling off the box body when the container is dropped, thus preventing food from spilling out. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of a food container structure according to the first embodiment of this utility model. Figure 1 ;
[0027] Figure 2 This is a schematic diagram of a food container structure according to the first embodiment of this utility model. Figure 2 ;
[0028] Figure 3 This is a schematic cross-sectional view of a food container according to the first embodiment of this utility model. Figure 1 ;
[0029] Figure 4 yes Figure 3 Enlarged diagram of A in the middle;
[0030] Figure 5 This is a schematic cross-sectional view of a food container according to the first embodiment of this utility model. Figure 2 ;
[0031] Figure 6 This is a schematic cross-sectional view of a food container according to the first embodiment of this utility model. Figure 3 ;
[0032] Figure 7 This is a cross-sectional structural diagram of a food container according to the second embodiment of this utility model;
[0033] Icons: 1. Box body, 2. Box lid, 3. Seal, 4. Vent hole, 5. Buckle support arm, 6. Mounting groove, 7. Annular groove, 8. Seal body, 9. Sealing bevel, 10. Snap-fit part, 11. Tableware, 12. Elastic sealing strip. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0035] Example
[0036] Combination Figures 1 to 6 As shown, this embodiment provides a food container that can be used to hold various foods, especially hot foods. The food container includes a box body 1 with an opening and a lid 2. The lid 2 is provided with a sealing element 3. The lid 2 seals the food in the box body 1 through the sealing element 3. When holding hot food, the hot food will generate negative pressure in the food container after cooling relative to the lower external environment.
[0037] In the first embodiment, the box body 1 is provided with a vent hole 4; when the box cover 2 is fastened to the box body 1, the sealing member 3 forms a contact area with the box body 1, and the vent hole 4 is located in the contact area and is blocked or opened by the sealing member 3.
[0038] Specifically, the box body 1 refers to the main structure for containing food, which can be made of injection-molded plastic, with an opening for loading or unloading food. The lid 2 refers to the component that covers the opening of the box body 1, and can be opened and closed using a snap-fit structure that matches the box body 1. The sealing element 3 refers to the elastic element that seals the box body 1 and the lid 2, and can be made of silicone or rubber to form a ring structure, which is installed on the lid 2. The vent 4 refers to the channel that penetrates the wall of the box body 1, distributed in the contact area near the opening of the box body 1. The contact area refers to the area where the sealing element 3 is tightly fitted to the surface of the box body 1 when the lid 2 is snapped on.
[0039] When the lid 2 is fastened onto the box body 1, the sealing element 3 deforms under pressure and comes into close contact with the inner wall surface of the box body 1 to form a seal. At this time, the vent 4 is completely blocked by the sealing element 3, ensuring the internal sealing of the container. When it is necessary to open the lid 2, simply pry up the side of the lid 2 located at one of the vent 4. At this time, the sealing element 3 on that side moves away from the vent 4, thereby allowing the interior of the box body 1 to communicate with the external environment, thus achieving pressure relief, and allowing the lid 2 to be quickly and easily removed from the box body 1.
[0040] This design integrates the vent 4 into the contact area of the housing 1, using the sealing element 3 for sealing. While maintaining a tight seal, it allows for rapid pressure relief before the lid 2 is fully opened, thus enabling effortless opening. It eliminates the need for additional pressure relief components, reducing production costs and assembly complexity. Furthermore, the integrated design of the vent 4 and the housing 1 avoids the small gaps between components found in conventional pressure relief valves, facilitating cleaning and eliminating hygiene concerns.
[0041] In this embodiment, as Figure 2 As shown, the lid 2 has latching arms 5 on both sides. The ends of the latching arms 5 fasten to the bottom of the box body 1 and cover the vent 4 to prevent dirt from entering the box body 1 through the vent 4. The latching arms 5 have a certain length to facilitate better gripping and force application by the user. The latching arms 5 not only prevent dirt from entering the box body 1 through the vent 4, but also allow the user to better grip one side of the latching arm 5 when opening the lid 2, and use the other side of the box body 1 as a fulcrum to form a lever principle, thus opening the lid 2 with less effort.
[0042] In this embodiment, as Figure 2 and Figure 3 As shown, the box body 1 is provided with a mounting groove 6 for accommodating the snap-on support arm 5. The vent 4 is located in the mounting groove 6. When the box lid 2 is fastened to the box body 1, the snap-on support arm 5 is in the mounting groove 6, and its surface is flush with the peripheral surface of the box body 1. Firstly, the mounting groove 6 ensures that after the box lid 2 is fastened to the box body 1, the outer surface of the snap-on support arm 5 remains flush with the outer perimeter of the box body 1, making the overall outer wall of the container look cleaner without any protruding structures. Secondly, the snap-on support arm 5 forms a continuous and smooth surface with the peripheral surface of the box body 1, avoiding the protrusions formed on the peripheral surface of the container by traditional exposed snap-on structures. This prevents the snap-on support arm 5 from being accidentally opened and causing food leakage when the container is transported with other objects in daily life.
[0043] Preferably, such as Figure 6As shown, there are multiple vent holes 4 distributed in the contact area, and their distances from the opening are not all the same. It is well known that when hot food in the food container cools down, the condensation of steam inside the container creates negative pressure, firmly holding the lid 2 in place. Opening the lid 2 at this time is very difficult, and if brute force is used to open it all at once, the negative pressure disappears at the moment of opening, causing the container 1 to shake violently and potentially spill food. In this embodiment, the multiple vent holes 4 are arranged at different distances from the opening. That is, when one side of the lid 2 is opened upwards, the sealing member 3 moves away from the multiple vent holes 4 at different distances from the opening, thereby gradually releasing pressure and making it increasingly easier to open the lid 2; it also avoids the problem of the container 1 shaking violently at the moment the lid 2 is opened.
[0044] In this embodiment, as Figure 4 As shown, the lid 2 has an annular groove 7. The sealing element 3 includes a sealing element body 8 installed in the groove and a sealing bevel 9 connected to the sealing element body 8. The sealing bevel 9 cooperates with the vent hole 4 to achieve a seal. When the lid 2 is fastened onto the box body 1, the sealing bevel 9 is positioned between the outer wall of the annular groove 7 and the inner wall of the lid 2, thereby sealing the vent hole 4. The distance between the vent hole 4 and the opening is between 1mm and 6mm. After the lid 2 is fastened onto the box body 1, the lower end of the sealing bevel 9 must extend beyond the vent hole 4 to achieve a sealing effect on the vent hole 4. Preferably, in this embodiment, the distance between the vent hole 4 and the opening is 4.5mm, and the lower end of the sealing bevel 9 needs to exceed 4.5mm slightly after the box cover 2 is fastened to the box body 1; this distance setting provides a certain thickness between the vent hole 4 and the opening to ensure the strength, while also ensuring that the sealing bevel 9 and the inner peripheral wall of the box body 1 have a sufficient sealing area.
[0045] Preferably, the vent 4 is funnel-shaped from the outside in, and the sealing bevel 9 cooperates with the small opening of the funnel to achieve a better sealing effect. The funnel-shaped vent 4 ensures air permeability while also providing better leak-proof performance for liquids. Since liquids, such as sauces and gravy, have a certain surface tension, they are difficult to leak out from the small opening inside the funnel-shaped vent 4.
[0046] In this embodiment, the lid 2 has a locking part 10 in the middle, which is used to hold tableware 11, such as spoons or chopsticks. By integrating the locking part 10 in the middle of the lid 2, the tableware 11 can be fixed without additional components, resulting in a simple structure that is easy to clean.
[0047] In the second embodiment, as Figure 7 As shown, this application also provides a food container, which includes a box body 1 with an opening and a lid 2. The lid 2 is provided with a sealing element 3, and the lid 2 seals the food in the box body 1 through the sealing element 3. It also includes an elastic sealing strip 12. When the lid 2 is fastened to the box body 1, one end of the elastic sealing strip 12 is fixed to the lid 2, and the other end is detachably fixed to the lid 2 after passing around the bottom of the box body 1. The sealing strip forms a contact area with the box body 1. The box body 1 is provided with a vent 4, which is located in the contact area and is blocked or opened by the sealing strip.
[0048] Specifically, the elastic sealing strip 12 can be made of silicone or rubber. One end is fixed to one side of the lid 2, and the other end wraps around the bottom of the box body 1 and can be detachably and fixedly connected to the other side of the lid 2 via a snap-on mechanism or an adhesive mechanism (such as Velcro). Of course, when the elastic sealing strip 12 is applied to the lid 2 and the box body 1, it has a certain pre-tightening force, thereby better sealing the vent 4. The elastic sealing strip 12 not only seals the vent 4, achieving a seal on the box body 1, but also fastens the lid 2 to the box body 1. Compared to the snap-on connection between the lid 2 and the box body 1, this prevents the lid 2 from detaching from the box body 1 and causing food spillage when the container is dropped.
[0049] Similarly, there are multiple vent holes 4, distributed at different positions in the contact area, thereby achieving gradual pressure relief, so that the lid 2 can be opened with less effort.
[0050] In other embodiments, the outer peripheral wall of the box body 1 may form a full circle of protrusions around the vent hole 4, thereby better sealing the vent hole 4 under the action of the elastic sealing strip 12 with pre-tightening force, further ensuring the airtightness.
[0051] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.
[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
Claims
1. A food container comprising a box body (1) provided with an opening and a box cover (2) provided with a sealing member (3), the box cover (2) sealing the food in the box body (1) by means of the sealing member (3), characterized in that The box body (1) is provided with a vent hole (4); when the box cover (2) is fastened to the box body (1), the sealing member (3) and the box body (1) form a contact area, and the vent hole (4) is located in the contact area and is blocked or opened by the sealing member (3).
2. The food container of claim 1, wherein The lid (2) is provided with buckle arms (5) on both sides. The ends of the buckle arms (5) are fastened to the bottom of the box body (1) and cover the vent (4) to prevent dirt from entering the box body (1) through the vent (4).
3. The food container of claim 2, wherein, The box body (1) is provided with a mounting groove (6) for accommodating the buckle arm (5). The vent (4) is located in the mounting groove (6). When the box cover (2) is fastened to the box body (1), the buckle arm (5) is in the mounting groove (6), and its surface is flush with the peripheral surface of the box body (1).
4. The food container of claim 1, wherein There are multiple vent holes (4) distributed in the contact area, and the distances from the opening are not all the same.
5. The food container of claim 1, wherein, The distance between the vent (4) and the opening is between 1 mm and 6 mm.
6. The food container of claim 1, wherein The box cover (2) is provided with an annular groove (7), and the sealing element (3) includes a sealing element body (8) installed in the groove and a sealing bevel (9) connected to the sealing element body (8). The sealing bevel (9) cooperates with the vent (4) to achieve sealing.
7. The food container of claim 6, wherein The vent (4) is funnel-shaped from the outside to the inside, and the sealing bevel (9) matches the small opening of the funnel.
8. The food container according to any one of claims 1 to 7, characterized in that The lid (2) has a snap-fit part (10) in the middle, which is used to place tableware (11).
9. A food container comprising a box body (1) with an opening and a lid (2), the lid (2) having a sealing element (3) for sealing the food within the box body (1) by means of the sealing element (3), characterized in that, It also includes an elastic sealing strip (12). When the box cover (2) is fastened to the box body (1), one end of the elastic sealing strip (12) is fixed to the box cover (2), and the other end is detachably fixed to the box cover (2) after passing around the bottom of the box body (1). The elastic sealing strip (12) and the box body (1) form a contact area. The box body (1) is provided with a vent hole (4). The vent hole (4) is located in the contact area and is blocked or opened by the elastic sealing strip (12).
10. The food container of claim 9, wherein, There are multiple vent holes (4) distributed at different locations in the contact area.