A food box

Abstract

The utility model discloses a kind of food boxes, belong to food storage appliance technical field.The utility model adopts technical scheme, a kind of food box, including the box body with oblique opening in upper end, the oblique opening in upper end of box body is taken thing side;Box cover assembly, for sealing the oblique opening;Wherein, the box cover assembly includes the sealing frame of the upper edge of box body oblique opening clamping cooperation, the end of sealing frame close to the thing side is taken and is equipped with mouth, the sealing frame is rotationally connected with the closure for sealing mouth of thing;The utility model optimizes thing path by oblique opening design, in combination with the cooperation structure of sealing frame and closure, solve the problem that traditional food box is difficult to take thing, poor tightness, with the advantage that the convenience of taking thing is improved, sealing reliability is enhanced, operation convenience is optimized.

Description

Technical Field

[0001] This utility model belongs to the technical field of food storage containers, specifically relating to a food box. Background Technology

[0002] Food containers are commonly used for storing snacks, dried goods, grains, and other foods. Their core requirements are ease of access, reliable sealing, ease of use, and long-term durability.

[0003] Existing food containers generally suffer from the following technical defects: First, the traditional vertical opening design makes it difficult to retrieve items from the deep cavity, easily leading to food spillage, especially in mobile scenarios where one-handed operation is difficult; second, the single sealing structure is prone to failure in environments with changing temperature and humidity, and frequent opening and closing accelerates the wear of the seals, failing to guarantee the long-term storage quality of food; third, the overall flip-top design relies on two-handed operation, the interference fit structure has high opening resistance and lacks effective damping limits, making it easy to accidentally open when moving and carrying; finally, the thin-walled structure and fixed sealing ring design reduce the product's durability, and the hard-to-clean corners are prone to bacterial growth.

[0004] These issues severely impact the practicality and reliability of food containers in various scenarios, including home, office, and commuting. Existing technologies urgently need improvement to address these problems. Utility Model Content

[0005] This utility model provides a food box to solve at least one of the above-mentioned technical problems.

[0006] The technical solution adopted in this utility model is as follows: A food box includes a box body with an oblique opening at the top, the opening of which is obliquely oriented towards the retrieval side; a lid assembly for sealing the oblique opening; wherein the lid assembly includes a sealing frame that engages with the upper edge of the oblique opening of the box body, the sealing frame having a retrieval opening at one end near the retrieval side, and a closure for sealing the retrieval opening rotatably connected to the sealing frame.

[0007] Furthermore, this application also proposes that the outer wall of the sealing frame is provided with a downwardly extending snap-fit ​​skirt, and the inner side of the sealing frame is provided with an annular rib, the annular rib and the snap-fit ​​skirt forming a snap-fit ​​groove structure that engages with the upper edge of the oblique opening of the box.

[0008] Furthermore, this application also proposes that the outer side of the upper end of the oblique opening of the box body is provided with continuous, outwardly protruding limiting ribs, and the inner side of the snap-fit ​​skirt is provided with a plurality of limiting flanges that cooperate with the limiting ribs at intervals along the circumference.

[0009] Furthermore, this application also proposes that a second sealing ring is provided inside the groove structure formed by the annular rib and the snap-fit ​​skirt.

[0010] Furthermore, this application also proposes that the sealing frame has an upwardly protruding sealing flange at the outer edge of the retrieval port, and the sealing member includes a sealing plate, the outer wall of which has a sealing skirt extending toward the sealing flange, the sealing skirt cooperating with the sealing flange.

[0011] Furthermore, this application also proposes that an annular mounting seat is provided on the inner side of the sealing plate, and a first sealing ring is detachably connected to the annular mounting seat, the first sealing ring abutting against the inner wall of the retrieval port.

[0012] Furthermore, this application also proposes that the annular rib is provided with reserved slots at intervals around its circumference, and the position of the reserved slots corresponds to the position of the sealing flange.

[0013] Furthermore, this application also proposes that the sealing frame is provided with a rotating connection groove, and a rotating shaft is fixedly connected to the side of the sealing plate, and the rotating shaft is rotatably connected to the connection groove.

[0014] Furthermore, this application also proposes that reinforcing ribs are provided between the inner side of the snap-fit ​​skirt and the annular rib, and between the annular rib and the sealing flange.

[0015] Furthermore, this application also proposes that a first damping flange is provided on the outer wall of the sealing flange near the object-receiving side, and a second damping flange is provided on the inner wall of the sealing skirt to cooperate with the first damping flange; The inner wall of the box is provided with at least one set of partition grooves facing each other, and a sealing plate is detachably connected to the partition groove.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. This solution, through its angled opening and partial retrieval port design, allows for easy retrieval by simply rotating the closure, reducing operation steps by more than 50%. The solution employs a split sealing frame and closure, maintaining airtightness while reducing the force required for opening and closing, making it suitable for one-handed operation. This application enables retrieval via an inclined path in deep-cavity food containers, reducing the probability of spillage of granular foods. The split sealing structure minimizes the impact of opening and closing actions on overall sealing performance, extending the service life of the sealing components. The rotating closure supports one-handed operation, adapting to the mobile use needs of commuting and office scenarios.

[0017] 2. This solution utilizes the synergistic effect of the snap-fit ​​skirt and the annular rib to create two contact surfaces at the edge of the box opening, significantly improving the assembly tightness between the sealing frame and the box. Simultaneously, the elastic deformation characteristics of the slot structure compensate for assembly gaps caused by manufacturing tolerances, preventing seal failure due to deviations in the box opening dimensions. This application effectively solves the problem of insufficient reliability in the sealing structure. The dual clamping effect of the slot structure prevents external moisture from seeping into the box through the assembly gap between the box and the sealing frame, maintaining a stable seal even under environments with drastic temperature and humidity fluctuations. The coordinated design of the limiting flange and the limiting rib prevents the sealing frame from shifting during transportation or frequent opening and closing, ensuring the long-term stability of the sealing structure.

[0018] 3. This solution utilizes the cooperation of limiting ribs and limiting flanges to form a multi-level limiting mechanism. While maintaining ease of assembly, it significantly improves the connection stability between the sealing frame and the housing, reducing the problem of decreased sealing performance caused by sealing frame displacement. This application effectively solves the problem of sealing failure caused by insufficient connection stability between the sealing frame and the housing. By suppressing lateral displacement of the sealing frame through a multi-point limiting structure, it ensures that the sealing ring and the housing contact surface are always in a tight fit, thereby improving sealing reliability and extending the service life of the sealing structure, while also facilitating quick disassembly and cleaning by the user.

[0019] 4. This solution adds a second sealing ring inside the slot structure, forming a multi-level sealing system with the rigid snap-fit ​​structure and the elastic sealing ring working together. When the box is subjected to external pressure or thermal expansion and contraction of the material, the second sealing ring can effectively absorb deformation, avoiding local cracking or permanent deformation of the single-layer sealing structure due to stress concentration, significantly improving sealing reliability. This application can prevent external moisture from seeping into the box through the slot structure, preventing food from becoming damp and spoiling; at the same time, it reduces the aging and detachment of the sealing ring caused by frequent opening and closing or fluctuations in ambient temperature and humidity, extending the service life of the food box. In environments with large temperature and humidity fluctuations, such as the rainy season in the south or heated rooms in the north, this solution can maintain a dry environment inside the box, making it suitable for storing humidity-sensitive foods such as nuts and biscuits.

[0020] 5. This solution utilizes a three-dimensional mating structure of the sealing flange and sealing skirt to create multiple sealing interfaces simultaneously in both the vertical and horizontal directions. Even with frequent opening and closing of the lid leading to wear on the sealing surface, this design can maintain an effective seal by adjusting the deformation of the sealing skirt, significantly extending the service life of the sealing structure. This application achieves a double seal when the opening is closed, effectively resisting the impact of box deformation caused by temperature and humidity changes on sealing performance. For example, during the rainy season, when the external humidity is significantly higher than the internal humidity, the sealing skirt adheres more tightly to the sealing flange under the pressure difference, preventing water vapor from seeping in through the edge of the opening and ensuring the storage stability of crispy foods. Simultaneously, this sealing structure can automatically complete the sealing surface adhesion through gravity in single-handed operation scenarios, without requiring additional pressure.

[0021] 6. This solution utilizes a detachable sealing ring design, which retains the reliable sealing effect between the sealing ring and the inner wall of the retrieval port while solving the problems of difficult cleaning and high replacement costs associated with the sealing ring. This application enables convenient separation of the sealing ring from the sealing plate, allowing users to disassemble and assemble the sealing ring without tools. This effectively prevents food residue from breeding bacteria within the sealing structure and avoids the overall replacement costs caused by sealing ring aging, significantly improving the maintenance convenience and long-term reliability of the sealing structure.

[0022] 7. The reserved slot design in this application eliminates the risk of structural interference by partially avoiding the sealing flange. Simultaneously, it utilizes the elastic deformation characteristics of the annular rib to ensure a tight fit between the slot and the edge of the box opening, improving sealing reliability. This application avoids assembly misalignment problems caused by the conflict between the sealing flange and the annular rib when the sealing frame and box are engaged, ensuring uniform stress and stable sealing of the slot structure. It reduces wear or failure of the sealing ring caused by excessive local deformation, thereby extending the food box's moisture-proof and deterioration-resistant performance under fluctuating temperature and humidity conditions.

[0023] 8. This solution uses a rotating structure with a shaft and groove to create a stable rotational trajectory during the opening and closing of the closure plate. This reduces operating resistance to accommodate one-handed operation and avoids structural fatigue caused by frequent opening and closing of traditional hinges. This application achieves linear controllability of the opening and closing action of the closure plate. In commuting scenarios where users can pick up items with one hand or move around, users only need to flick the closure plate with one finger to open and close the retrieval port. Furthermore, the mating structure between the rotating shaft and the connecting groove can maintain the stability of the closure plate even in bumpy environments, effectively preventing food spillage caused by the lid accidentally popping open. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model; Figure 2 This is a top view of a specific embodiment of the present utility model; Figure 3This utility model Figure 2 Schematic diagram of the cross-sectional structure along the AA direction; Figure 4 This is a schematic diagram of the box structure in this utility model; Figure 5 This is a schematic diagram of the structure of the box cover assembly in this utility model; Figure 6 This is one of the structural schematic diagrams of the sealing frame in this utility model; Figure 7 This is the second schematic diagram of the sealing frame in this utility model; Figure 8 This is a schematic diagram of the structure of the closed plate in this utility model; Figure 9 This utility model Figure 3 Enlarged view of section B; Figure 10 For the present utility model Figure 5 Enlarged view of section C.

[0025] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0026] In the attached diagram: 1. Box body; 11. Limiting rib; 12. Divider groove; 2. Sealing frame; 21. Retrieval port; 211. Sealing flange; 212. First damping flange; 213. Reinforcing rib; 22. Snap-fit ​​skirt; 221. Limiting flange; 23. Annular rib; 231. Reserved slot; 24. Connecting groove; 25. Insertion groove; 26. Mounting bracket; 261. Desiccant storage box; 3. Sealing plate; 31. Sealing skirt; 311. Second damping flange; 32. Rotating shaft; 33. Annular mounting base; 331. First sealing ring; 34. Label groove; 341. Label box; 4. Second sealing ring. Detailed Implementation

[0027] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0029] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a communication 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.

[0031] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Those skilled in the art will understand that, in the prior art, food boxes generally adopt a vertical opening and an integral lid structure, requiring the lid to be fully opened and the hand to be vertically inserted into the box body 1 when retrieving items. This design can easily obstruct the path of retrieving items in deep-cavity containers, and granular foods are prone to spillage; the sealing structure relies on a single fastener or a single-layer sealing ring, and frequent opening and closing can easily cause the seal to fail; the overall opening and closing operation requires both hands, which cannot meet the needs of one-handed use in mobile scenarios.

[0033] To address the aforementioned issues, the inventors discovered that existing vertical openings cause a mismatch between the object retrieval path and the natural tilting motion of the human body, directly linking spillage and operational inconvenience. By adjusting the opening direction, the object retrieval path aligns with the natural movement trajectory of the hand, reducing operational difficulty. Simultaneously, the sealing structure must remain stable under frequent opening and closing conditions to prevent seal failure due to assembly gaps. Therefore, a design was proposed to change the opening to an angled shape and incorporate an independent sealing component, simplifying the operation while maintaining a tight seal.

[0034] Therefore, this application proposes a box body 1 with an oblique opening at the top, the opening at the top of the box body 1 being obliquely oriented toward the retrieval side; a box lid assembly for sealing the oblique opening; the box lid assembly includes a sealing frame 2 that engages with the upper edge of the oblique opening of the box body 1, a retrieval opening 21 is opened at one end of the sealing frame 2 near the retrieval side, and a closure member for sealing the retrieval opening 21 is rotatably connected to the sealing frame 2.

[0035] The angled opening is where the upper opening plane of the box body 1 forms an angle with the horizontal direction, specifically between 30° and 60°, with the angle pointing towards the user's retrieval side. This design ensures the retrieval path aligns with the natural tilt of the hand, reducing spillage. The sealing frame 2 is a ring-shaped support structure that matches the edge of the opening in the box body 1, and can be made of injection-molded plastic. Its inner side has a snap-fit ​​structure to fix it to the edge of the box body 1. The retrieval port 21 is a partially opened area in the sealing frame 2, specifically located at the end of the sealing frame 2 closest to the user, with an opening area occupying 20%-40% of the total area of ​​the sealing frame 2. The closure is a movable part covering the retrieval port 21, specifically a hinged flip-top or rotating cover, which opens and closes the retrieval port 21 through rotation.

[0036] The slanted opening at the top of the container 1 allows food inside to slide naturally along the inclined surface to the retrieval port 21 when poured, eliminating the need for significant tilting of the container 1. The sealing frame 2 is fixed to the edge of the opening of the container 1 via a snap-fit ​​mechanism, forming the first-level sealing barrier. The closure is connected to the sealing frame 2 via a rotating shaft 32, allowing the user to rotate the closure around the shaft with one hand, exposing the retrieval port 21 for retrieval. When the closure is closed, its edge makes surface contact with the edge of the retrieval port 21 of the sealing frame 2, preventing external air from entering the interior of the container 1.

[0037] Compared to existing technologies, which require fully opening the lid and vertically retrieving the item through a vertical opening, this solution uses an angled opening and a partial retrieval port 21, allowing retrieval simply by rotating the closure, reducing the number of steps by more than 50%. Existing sealing structures rely on the lid being snapped shut as a whole, while this solution uses a separate sealing frame 2 and closure component, maintaining a tight seal while reducing the force required for opening and closing, making it suitable for one-handed operation.

[0038] Through the above technical solutions, this application enables tilted path retrieval in deep cavity food boxes, reducing the probability of spillage of granular food; the split sealing structure reduces the impact of opening and closing actions on the overall sealing performance and extends the service life of the sealing components; the rotating closure supports one-handed operation, adapting to the mobile use needs of commuting and office scenarios.

[0039] This application further proposes that the outer wall of the sealing frame 2 is provided with a downwardly extending snap-fit ​​skirt 22, and the inner side of the sealing frame 2 is provided with an annular rib 23. The annular rib 23 and the snap-fit ​​skirt 22 form a snap-fit ​​groove structure that engages with the upper edge of the oblique opening of the box body 1.

[0040] The snap-fit ​​skirt 22 is an annular edge structure extending downward from the outer wall of the sealing frame 2. It can be integrally injection molded from a flexible plastic material, and its inner wall can be provided with a limiting flange 221 to enhance assembly stability. The annular rib 23 is a continuous annular protrusion structure located on the inner side of the sealing frame 2. It can be designed with the same material as the sealing frame 2, and forms a slot structure with the snap-fit ​​skirt 22 through injection molding. The slot structure is a U-shaped groove formed by the annular rib 23 and the snap-fit ​​skirt 22, and can achieve a tight engagement with the opening edge of the box body 1 through elastic deformation.

[0041] Specifically, when the sealing frame 2 is assembled to the oblique opening of the box body 1, the upper edge of the opening of the box body 1 is constrained within the groove formed by the snap-fit ​​skirt 22 and the annular rib 23. The downward-extending shape of the snap-fit ​​skirt 22 covers the outer wall of the opening of the box body 1, while the annular rib 23 presses against the inner wall of the opening of the box body 1 from the inside, forming a two-way clamping effect. The elastic deformation capability of the groove structure allows the edge of the opening of the box body 1 to undergo slight deformation during assembly, ensuring the compatibility between different batches of box bodies 1 and the sealing frame 2. The limiting flange 221 provided on the inner side of the snap-fit ​​skirt 22 cooperates with the limiting rib 11 on the outer side of the opening of the box body 1 to prevent the sealing frame 2 from shifting along the axial direction of the box body 1.

[0042] Compared to existing technologies, traditional food box sealing structures often employ single-layer snap-fit ​​or single-sealing-ring designs, failing to create a bidirectional clamping seal. This solution, through the synergistic effect of the snap-fit ​​skirt 22 and the annular rib 23, forms two contact surfaces at the opening edge of the box body 1, significantly improving the assembly tightness between the sealing frame 2 and the box body 1. Simultaneously, the elastic deformation characteristics of the slot structure compensate for assembly gaps caused by manufacturing tolerances, preventing seal failure due to dimensional deviations in the opening of the box body 1.

[0043] Through the above technical solution, this application effectively solves the problem of insufficient reliability of the sealing structure. The double clamping effect of the slot structure can prevent external moisture from seeping into the box through the assembly gap between the box body 1 and the sealing frame 2, and can maintain a stable sealing state even under environment with drastic temperature and humidity fluctuations. The matching design of the limiting flange 221 and the limiting rib 11 can prevent the sealing frame 2 from shifting during transportation or frequent opening and closing, ensuring the long-term stability of the sealing structure.

[0044] This application further proposes that the upper outer side of the oblique opening of the box body 1 is provided with continuous, outwardly protruding limiting ribs 11, and the inner side of the snap-fit ​​skirt 22 is provided with a number of limiting flanges 221 that cooperate with the limiting ribs 11 at intervals along the circumference.

[0045] The limiting rib 11 is an outwardly protruding structure that extends continuously along the upper outer side of the opening of the box body 1. It can be integrally molded with the box body 1 using injection molding. Its function is to form multi-point contact with the limiting flange 221 on the inner side of the snap-fit ​​skirt 22, thus limiting the lateral displacement of the sealing frame 2 on the box body 1. The limiting flange 221 is a locally protruding structure that is circumferentially distributed along the inner side of the snap-fit ​​skirt 22. It can be made of elastic material. Its function is to form a snap-fit ​​with the limiting rib 11, thereby enhancing the connection stability between the sealing frame 2 and the box body 1 by dispersing the stress points. At the same time, it allows the sealing frame 2 to undergo elastic deformation during assembly to achieve quick assembly and disassembly.

[0046] Specifically, the continuous limiting ribs 11 on the outer side of the upper end of the oblique opening of the box body 1 and the spaced limiting flanges 221 on the inner side of the snap-fit ​​skirt 22 form a complementary structure. When the sealing frame 2 is snapped onto the edge of the oblique opening of the box body 1 through the snap-fit ​​skirt 22, the limiting ribs 11 are embedded in the gaps of the limiting flanges 221 on the inner side of the snap-fit ​​skirt 22, forming multi-point limiting constraints. This design allows the contact surfaces of the limiting ribs 11 and the limiting flanges 221 to generate friction when the sealing frame 2 is subjected to external force, preventing the sealing frame 2 from sliding or shifting relative to the box body 1, thereby avoiding sealing failure caused by misalignment of the sealing frame 2. At the same time, the spaced distribution of the limiting flanges 221 allows the snap-fit ​​skirt 22 to undergo local elastic deformation during assembly, reducing assembly resistance and improving disassembly and assembly efficiency.

[0047] Compared to existing technologies, traditional food boxes typically connect the sealing frame 2 and the box body 1 using only a single snap-fit ​​structure, lacking a multi-point limiting design. This makes them prone to displacement under frequent opening and closing or external impacts, resulting in gaps between the sealing ring and the contact surface of the box body 1. This solution, however, utilizes the cooperation of the limiting rib 11 and the limiting flange 221 to form a multi-level limiting mechanism. While maintaining ease of assembly, this significantly improves the connection stability between the sealing frame 2 and the box body 1, reducing the problem of decreased sealing performance caused by displacement of the sealing frame 2.

[0048] Through the above technical solution, this application effectively solves the problem of sealing failure caused by insufficient connection stability between the sealing frame 2 and the box 1. By using a multi-point limiting structure to suppress the lateral displacement of the sealing frame 2, it ensures that the sealing ring and the contact surface of the box 1 are always in a tight fit, thereby improving the sealing reliability and extending the service life of the sealing structure, while also facilitating quick disassembly and cleaning by the user.

[0049] This application further proposes that the groove structure formed by the annular rib 23 and the snap-fit ​​skirt 22 has a second sealing ring 4 inside.

[0050] The annular rib 23 is a ring-shaped protrusion structure surrounding the inner side of the sealing frame 2. It can be integrally molded with the sealing frame 2 using injection molding. It forms a groove structure with the snap-fit ​​skirt 22 to accommodate the upper edge of the oblique opening of the box 1, achieving initial fixation between the sealing frame 2 and the box 1 through snap-fit ​​engagement. The second sealing ring 4 is an elastic sealing component embedded within the groove structure. It can be made of silicone or rubber, and its cross-sectional shape can be designed as circular, rectangular, or irregular. It fills the assembly gap between the groove structure and the upper edge of the oblique opening of the box 1 through compression deformation.

[0051] Specifically, when the sealing frame 2 engages with the upper edge of the oblique opening of the box 1 via the slot structure, the second sealing ring 4 is compressed between the annular rib 23, the engaging skirt 22, and the edge of the opening of the box 1, forming a continuous sealing interface surrounding the opening. When the box 1 is subjected to external vibration or temperature and humidity changes causing slight deformation of the material, the elastic restoring force of the second sealing ring 4 can adaptively compensate for the assembly gap, avoiding sealing failure due to deformation. This sealing ring and the annular rib 23 on the inner side of the sealing frame 2 form a double sealing structure, where the annular rib 23 provides rigid support to maintain the shape of the slot structure, while the second sealing ring 4 achieves dynamic sealing through elastic deformation.

[0052] Compared to existing technologies, current food boxes typically rely solely on a single-layer snap-fit ​​structure or a single sealing ring between the lid and the box body 1 for sealing. This solution, however, adds a second sealing ring 4 inside the slot structure, forming a multi-level sealing system where a rigid snap-fit ​​structure and an elastic sealing ring work together. When the box body 1 is subjected to external pressure or thermal expansion and contraction of the material, the second sealing ring 4 can effectively absorb deformation, preventing localized cracking or permanent deformation of the single-layer sealing structure due to stress concentration, significantly improving sealing reliability.

[0053] Through the above technical solution, this application can prevent external moisture from seeping into the interior of the box 1 through the slot structure, thus avoiding food from becoming damp and spoiling; at the same time, it reduces the aging and falling off of the sealing ring caused by frequent opening and closing or fluctuations in ambient temperature and humidity, extending the service life of the food box. In environments with large temperature and humidity fluctuations, such as the rainy season in the south or heated rooms in the north, this solution can maintain a dry environment inside the box, making it suitable for storing moisture-sensitive foods such as nuts and biscuits.

[0054] This application further proposes a food box, including a box body 1 with an oblique opening at the top, the opening of the box body 1 being obliquely oriented towards the retrieval side; a lid assembly for sealing the oblique opening; the lid assembly includes a sealing frame 2 that engages with the upper edge of the oblique opening of the box body 1, the sealing frame 2 having a retrieval opening 21 at one end near the retrieval side, and a closure member for sealing the retrieval opening 21 rotatably connected to the sealing frame 2; the sealing frame 2 has an upwardly protruding sealing flange 211 at the outer edge of the retrieval opening 21, and the closure member includes a sealing plate 3, the outer wall of the sealing plate 3 having a sealing skirt 31 extending toward the sealing flange 211, the sealing skirt 31 engaging with the sealing flange 211.

[0055] The sealing flange 211 is a raised structure located on the outer edge of the retrieval port 21. It can be integrally molded with the sealing frame 2 using injection molding, and is used to form the first sealing barrier when the sealing plate 3 is closed. The sealing skirt 31 is a ring-shaped structure extending from the outer wall of the sealing plate 3 towards the sealing flange 211. It can be made of flexible plastic material and forms an interference fit with the sealing flange 211 through elastic deformation to achieve the second sealing protection.

[0056] Specifically, when the sealing plate 3 rotates around the rotation axis 32 to the closed position, the sealing skirt 31 naturally droops under gravity, and its inner wall forms a surface contact with the outer surface of the sealing flange 211. During this process, the flexible material of the sealing skirt 31 can adapt to the slight unevenness of the surface of the sealing flange 211, filling the assembly gap between the two through elastic deformation. When the box body 1 is subjected to external vibration or internal air pressure changes, the double sealing structure of the sealing flange 211 and the sealing skirt 31 can effectively prevent external moisture from seeping into the box through the opening 21, while also preventing the food odor from escaping. As a preferred embodiment, the cross-section of the sealing flange 211 can be designed as a trapezoidal structure, and its inclined side can guide the sealing skirt 31 to automatically correct positional deviations during the closing process.

[0057] Compared to existing technologies, traditional food boxes rely solely on a single layer of contact between the closure plate 3 and the opening plane for sealing the opening 21. This design, however, utilizes a three-dimensional mating structure between the sealing flange 211 and the sealing skirt 31 to create multiple sealing interfaces simultaneously in both the vertical and horizontal directions. Even with frequent opening and closing of the lid leading to wear on the sealing surface, this design can maintain an effective seal by adjusting the deformation of the sealing skirt 31, significantly extending the service life of the sealing structure.

[0058] Through the above technical solution, this application can form a double dynamic seal when the retrieval opening 21 is closed, effectively resisting the influence of box body 1 deformation caused by temperature and humidity changes on the sealing performance. For example, during the rainy season, when the external humidity is significantly higher than that inside the box, the sealing skirt 31 fits more tightly against the sealing flange 211 under the action of air pressure difference, preventing water vapor from seeping in through the edge of the retrieval opening 21 and ensuring the storage stability of crispy foods. At the same time, this sealing structure can still automatically complete the sealing surface adhesion through gravity in a one-handed operation scenario, without the need to apply additional pressure.

[0059] This application further proposes that the inner side of the sealing plate 3 is provided with an annular mounting seat 33, and a first sealing ring 331 is detachably connected to the annular mounting seat 33, and the first sealing ring 331 abuts against the inner wall of the retrieval port 21.

[0060] The annular mounting base 33 is an annular support structure fixed inside the sealing plate 3. It can be integrally molded with the sealing plate 3 using injection molding, or fixed to the inside of the sealing plate 3 via snap-fit ​​or threaded connection, providing a stable mounting base for the first sealing ring 331. The detachable connection is a non-fixed connection between the first sealing ring 331 and the annular mounting base 33 achieved through snap-fit, magnetic attraction, or plug-in methods. Specifically, the annular mounting base 33 can have a groove on its inner side, and the outer wall of the first sealing ring 331 can have a protrusion matching the groove, enabling quick assembly and disassembly. The first sealing ring 331 is an annular seal made of an elastic material, such as silicone, rubber, or thermoplastic elastomer. Through elastic deformation, it forms an interference fit with the inner wall of the access port 21, preventing external air and moisture from entering the box 1.

[0061] Specifically, the annular mounting base 33 extends along the inner edge of the sealing plate 3 to form an annular support surface, and the first sealing ring 331 is fixed to the annular mounting base 33 by a snap-fit ​​method. When the sealing plate 3 rotates to the closed position, the first sealing ring 331 is compressed and deformed, and fits tightly against the inner wall of the access port 21, forming a radial sealing interface. Since the first sealing ring 331 is removable, the user can periodically remove it for cleaning or replacement, preventing food residue from accumulating in the gap between the sealing ring and the mounting base. It can also be flexibly replaced according to the wear condition of the sealing ring, extending the service life of the sealing structure.

[0062] Compared to existing technologies, traditional food container sealing rings are typically fixed to the lid or body 1 using adhesive bonding or interference fitting, making them impossible to disassemble and clean. Over time, residual dirt can easily cause seal failure. This solution, through a detachable sealing ring design, maintains a reliable seal between the sealing ring and the inner wall of the opening 21 while solving the problems of difficult cleaning and high replacement costs. This application enables easy separation of the sealing ring from the sealing plate 3, allowing users to disassemble and assemble the sealing ring without tools. This effectively prevents food residue from breeding bacteria within the sealed structure and avoids the overall replacement cost due to sealing ring aging, significantly improving the maintenance convenience and long-term reliability of the sealing structure.

[0063] This application further proposes that the annular rib 23 is provided with reserved slots 231 at intervals around the circumference, and the position of the reserved slots 231 corresponds to the position of the sealing flange 211.

[0064] The reserved slot 231 is a notch area distributed circumferentially by the annular rib 23. Specifically, it can be formed by grooving with a mold. The position of the reserved slot 231 is aligned with the sealing flange 211 to avoid structural interference between the annular rib 23 and the sealing flange 211 during assembly, while allowing the annular rib 23 to undergo elastic deformation during the snap-fit ​​process.

[0065] Specifically, the annular rib 23 forms a continuous groove structure on the inner side of the snap-fit ​​skirt 22. When the sealing frame 2 and the box 1 are snapped together at an angle, the reserved slot 231 of the annular rib 23 corresponds to the sealing flange 211, allowing the sealing flange 211 to be inserted into the groove without obstruction. During assembly, the reserved slot 231 of the annular rib 23 can release the local stress caused by the compression of the sealing flange 211, preventing the groove structure from cracking or the seal from failing due to excessive deformation of the annular rib 23. In addition, the presence of the reserved slot 231 allows the annular rib 23 to form an alternating distribution of elastic support sections and non-elastic support sections in the circumferential direction, which not only ensures the overall strength of the groove structure but also improves the tolerance during assembly.

[0066] Compared with existing technologies, the annular sealing ribs of existing food boxes are usually continuous closed structures. When the sealing flange 211 overlaps with the annular sealing rib, it is easy for the sealing flange 211 to collide with the annular sealing rib, causing deformation of the sealing structure or assembly difficulties. The reserved slot 231 design of this application eliminates the risk of structural interference by partially avoiding the sealing flange 211. At the same time, it utilizes the elastic deformation characteristics of the annular rib 23 to ensure a tight fit between the slot and the opening edge of the box body 1, thereby improving the sealing reliability.

[0067] Through the above technical solution, this application can avoid the assembly misalignment problem caused by the conflict between the sealing flange 211 and the annular rib 23 when the sealing frame 2 and the box body 1 are snapped together, ensure the uniform force and stable sealing of the slot structure, reduce the wear of the sealing ring or sealing failure caused by excessive local deformation, and thus extend the moisture-proof and deterioration resistance of the food box in the environment of temperature and humidity fluctuation.

[0068] This application further proposes that the sealing frame 2 is provided with a rotating connection groove 24, and the side of the sealing plate 3 is fixedly connected with a rotating shaft 32, and the rotating shaft 32 is rotatably connected to the connection groove 24.

[0069] The rotating connecting groove 24 is a groove structure set on the side wall of the sealing frame 2. It can be implemented as a U-shaped or semi-circular cross-section groove to accommodate the rotating shaft 32 and limit its axial displacement. The rotating shaft 32 is a cylindrical component fixed on both sides of the sealing plate 3. It can be made of metal or high-strength plastic material. The shaft and the groove form a rotation fulcrum, so that the sealing plate 3 maintains a stable trajectory when rotating around the shaft.

[0070] Specifically, the rotating shaft 32 is embedded in the rotating connecting groove 24 to form a clearance fit. When the closing plate 3 is subjected to external force, the rotating shaft 32 rolls in the groove along the circumferential direction, driving the closing plate 3 to rotate around the axis to complete the opening and closing action. This structure replaces the complex assembly of traditional hinges with the mechanical constraint between the shaft and the groove, ensuring smooth rotation while avoiding the defects of hinge structure being prone to wear and breakage.

[0071] Compared to existing technologies, traditional food boxes mostly use a single-piece hinge or an interference fit. The former requires two hands to operate and cannot be fixed with one hand, while the latter is difficult to open and close due to excessive frictional resistance. This solution uses a rotating structure with a shaft groove to create a stable rotational trajectory during the opening and closing of the closing plate 3. This reduces operating resistance to accommodate one-handed operation and avoids structural fatigue caused by frequent opening and closing of traditional hinges.

[0072] Through the above technical solution, this application realizes the linear controllability of the opening and closing action of the sealing plate 3. In the scenario of commuting and picking up items with one hand or moving around, the user only needs to flick the sealing plate 3 with one finger to complete the opening and closing operation of the picking port 21. Moreover, the cooperation structure between the rotating shaft 32 and the connecting groove 24 can still keep the position of the sealing plate 3 stable in a bumpy environment, effectively preventing food spillage caused by the lid accidentally popping open.

[0073] This application further proposes that reinforcing ribs 213 are provided between the inner side of the snap-fit ​​skirt 22 and the annular rib 23, and between the annular rib 23 and the sealing flange 211.

[0074] The reinforcing rib 213 is a supporting structure located at key connection points of the sealing frame 2. It can be implemented using ribs or a mesh structure to enhance the local deformation resistance of the sealing frame 2 and prevent structural fracture caused by frequent opening and closing or external impacts. The area between the inner side of the snap-fit ​​skirt 22 and the annular rib 23 refers to the transition area between the snap-fit ​​skirt 22 and the annular rib 23 in the sealing frame 2. This area can be formed by injection molding, creating continuous or intermittent reinforcing ribs 213 to disperse stress concentration at the snap-fit ​​points and prevent cracks from forming at the connection between the sealing frame 2 and the housing 1 due to uneven stress. The area between the annular rib 23 and the sealing flange 211 refers to the transition area between the annular rib 23 and the sealing flange 211 in the sealing frame 2. This area can be formed by an integrated molding process, creating transverse or longitudinal reinforcing ribs 213 to enhance the supporting rigidity of the sealing flange 211 and prevent it from tilting or shifting under pressure.

[0075] Specifically, reinforcing ribs 213 are arranged at the connection points of the snap-fit ​​skirt 22 and the annular rib 23, and at the connection points of the annular rib 23 and the sealing flange 211, forming a multi-directional support structure. When the sealing frame 2 snaps into the housing 1, the engagement between the snap-fit ​​skirt 22 and the limiting rib 11 of the housing 1 generates radial pressure. At this time, the reinforcing ribs 213 can effectively absorb and disperse this pressure, preventing the snap-fit ​​skirt 22 from undergoing plastic deformation due to long-term stress. When the closure is repeatedly opened and closed, the contact surface between the sealing flange 211 and the sealing skirt 31 is subjected to periodic compression. The reinforcing ribs 213 can suppress the elastic deformation amplitude of the sealing flange 211, ensuring the fitting accuracy between the sealing flange 211 and the sealing skirt 31.

[0076] Compared to existing technologies, the sealing frame 2 of conventional food containers typically employs a uniform wall thickness design without reinforcing structures in stress concentration areas, leading to breakage or deformation of the fastening parts after prolonged use. This application, through the targeted layout of reinforcing ribs 213, significantly improves the mechanical strength of the sealing frame 2, giving it higher fatigue resistance with the same material usage, while simultaneously preventing sealing failure due to structural deformation.

[0077] Through the above technical solution, this application effectively solves the problems of poor durability and rapid degradation of sealing performance in existing food boxes due to insufficient strength of the sealing frame 2. The introduction of reinforcing ribs 213 enables the sealing frame 2 to maintain structural stability during frequent opening and closing, cleaning, or transportation, extending the service life of the food box, while reducing the risk of seal ring wear caused by component deformation, ensuring long-term sealing reliability. In addition, the reasonable distribution of reinforcing ribs 213 avoids local stress concentration, enabling the sealing frame 2 to withstand greater assembly pressure, further improving the tightness of the connection between the box body 1 and the sealing frame 2.

[0078] This application further proposes that the sealing flange 211 has a first damping flange 212 on the outer wall near the object retrieval side, and the sealing skirt 31 has a second damping flange 311 on the inner wall that cooperates with the first damping flange 212; the inner wall of the box body 1 has at least one set of partition grooves 12 facing each other, and a sealing plate is detachably connected in the partition grooves 12; the sealing frame 2 has several insertion grooves 25, which are used to insert display plates; the inner side of the sealing frame 2 has a mounting bracket 26, and a desiccant storage box 261 is detachably connected to the mounting bracket 26; the inner or outer side of the sealing plate 3 has a label groove 34, and a label box 341 is detachably connected in the label groove 34.

[0079] The first damping flange 212 and the second damping flange 311 are raised structures provided on the sealing flange 211 and the sealing skirt 31, respectively. These can be made of elastic material or toothed protrusions, and their interlocking generates frictional resistance to limit unintended rotation of the closure. The partition groove 12 is a symmetrically arranged groove structure on the inner wall of the box body 1, which can be implemented as a slide rail or a slot, and is used to install a removable sealing plate to adjust the internal space of the box body 1. The insertion groove 25 is a recessed structure on the surface of the sealing frame 2, which can be implemented as a dovetail groove or a straight groove, and is used to insert a display plate to label food information. The desiccant storage box 261 is a container installed inside the sealing frame 2, which can be implemented as a mesh-like box body 1 with a snap-fit ​​structure, and is used to place desiccant to absorb moisture inside the box. The label groove 34 is a groove on the surface of the sealing plate 3, which can be implemented as an embedded slot with a magnetic structure, and is used to fix the label box 341 to label the food type or shelf life.

[0080] Specifically, when the sealing plate 3 rotates to the closed position, the first damping flange 212 and the second damping flange 311 come into contact with each other and generate frictional resistance, preventing the sealing plate 3 from opening on its own due to vibration or tilting. Inserting the sealing plate into the partition groove 12 divides the box 1 into multiple independent chambers, preventing cross-contamination of flavors between different foods. Inserting the display plate into the insertion groove 25 allows users to quickly identify the types of food inside the box. The desiccant storage box 261 on the mounting rack 26 is removable for easy desiccant replacement, maintaining a dry environment inside the box. The label box 341 installed in the label groove 34 is secured by magnets or clips, facilitating the updating of food information.

[0081] Compared with existing technologies, existing food boxes lack a damping limiting structure, causing the lid to easily pop open on its own. This solution achieves a stable closed state through the cooperation of the damping flange and the sealing skirt 31. Existing products cannot adjust the internal space, leading to mixed storage of food. This solution achieves flexible partitioning through the combination of the partition groove 12 and the sealing plate. Existing technologies do not have a desiccant storage structure, resulting in poor moisture protection. This solution extends the shelf life of food by fixing the desiccant storage box 261 with the mounting bracket 26. Existing labels are mostly printed or stickers, which are easily worn and detached. This solution improves the reliability of information labeling through the detachable connection between the label groove 34 and the label box 341.

[0082] Through the above technical solution, this application solves the problems of existing food boxes being prone to leakage in mobile scenarios, easy failure of sealing structure, non-adjustable internal space, insufficient moisture resistance and easy label detachment, and achieves the technical effects of stable one-handed operation, food classification and storage, active humidity control and durable information labeling.

[0083] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0084] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0085] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A food box, characterized in that, Includes a box (1) with an oblique opening at the top, wherein the opening at the top of the box (1) is obliquely directed toward the side for taking out the object; A lid assembly for sealing the angled opening; The box cover assembly includes a sealing frame (2) that engages with the upper edge of the oblique opening of the box body (1). The sealing frame (2) has a retrieval port (21) at one end near the retrieval side. A closure for sealing the retrieval port (21) is rotatably connected to the sealing frame (2).

2. A food box according to claim 1, characterized in that, The outer wall of the sealing frame (2) is provided with a downwardly extending snap-fit ​​skirt (22), and the inner side of the sealing frame (2) is provided with an annular rib (23). The annular rib (23) and the snap-fit ​​skirt (22) form a snap-fit ​​groove structure that engages with the upper edge of the oblique opening of the box body (1).

3. A food box according to claim 2, characterized in that, The box body (1) has a continuous, outwardly protruding limiting rib (11) on the outer side of the upper end of the oblique opening, and the inner side of the snap-fit ​​skirt (22) is provided with a number of limiting flanges (221) that cooperate with the limiting rib (11) along the circumferential direction.

4. A food box according to claim 2, characterized in that, The groove structure formed by the annular rib (23) and the snap-fit ​​skirt (22) is provided with a second sealing ring (4).

5. A food box according to claim 3, characterized in that, The sealing frame (2) has an upwardly protruding sealing flange (211) on the outer edge of the retrieval port (21). The sealing member includes a sealing plate (3). The outer wall of the sealing plate (3) has a sealing skirt (31) extending toward the sealing flange (211). The sealing skirt (31) cooperates with the sealing flange (211).

6. A food box according to claim 5, characterized in that, The inner side of the closed plate (3) is provided with an annular mounting seat (33), and a first sealing ring (331) is detachably connected to the annular mounting seat (33). The first sealing ring (331) abuts against the inner wall of the retrieval port (21).

7. A food box according to claim 2, characterized in that, The annular rib (23) is provided with reserved slots (231) at intervals around the circumference, and the position of the reserved slots (231) corresponds to the position of the sealing flange (211).

8. A food box according to claim 6, characterized in that, The sealing frame (2) is provided with a rotating connection groove (24), and the side of the sealing plate (3) is fixedly connected with a rotating shaft (32), and the rotating shaft (32) is rotatably connected to the connection groove (24).

9. A food box according to claim 3, characterized in that, A reinforcing rib (213) is provided between the inner side of the snap-fit ​​skirt (22) and the annular rib (23), and between the annular rib (23) and the sealing flange (211).

10. A food box according to claim 5, characterized in that, The sealing flange (211) has a first damping flange (212) on its outer wall near the object-receiving side, and the sealing skirt (31) has a second damping flange (311) on its inner wall that cooperates with the first damping flange (212).

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