Sealing cover and crisper

Abstract

The utility model provides a kind of sealing cover, cover and seal on the box, including integrally-formed base body, first boss and second boss;First boss extends from the end of base body towards seal box formation, second boss extends from the other end of base body in the direction away from seal box formation;The outer side of base body and the outer side of first boss jointly constitute sealing surface, sealing surface is peripherally provided with sealing rib, sealing rib is abutted to the inner side wall of seal box, and sealing rib and the inner side wall of seal box are connected with interference fit;The upper end of seal box is abutted to the lower end of second boss.Compared with prior art sealing mode is more easily to clean, food residue is basically not left, bacteria and mould are not easily bred for long-term use.In the guarantee sealing effect, the number of parts is reduced, avoid improper operation caused by sealing failure problem.The utility model also provides a fresh-keeping box using the above sealing cover.

Description

Technical Field

[0001] This utility model belongs to the field of sealed container technology, specifically relating to a sealing cap and a food storage box. Background Technology

[0002] In daily life, using airtight food containers to refrigerate and preserve food has become a common practice. Most airtight food containers currently available are made of rigid plastic or have a plastic frame with silicone inserts, and all achieve a sealing effect through sealing elements or sealing rings made of elastic materials.

[0003] However, due to the limited installation space for the seals or sealing rings, the interior is difficult to clean, and food residue easily accumulates inside after repeated use, leading to the growth of bacteria and fungi and endangering the user's health. Secondly, to ensure the effective deformation of the seals or sealing rings and a secure connection between the box and lid for a complete seal, the lid and other parts need to have a snap-fit ​​or mechanical locking mechanism at the contact point with the box body. This makes the sealed safety box complex with many parts, and even slight improper operation can lead to seal failure, affecting the user experience. Conversely, without a snap-fit ​​or mechanical locking mechanism, even if a seal is guaranteed, there is still a risk of food spillage due to incorrect gripping or accidental tipping during placement. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sealing lid and a food storage container. By integrally molding, the sealing ribs are circumferentially positioned on the sealing surface, making the lid easier to clean, reducing the likelihood of food residue residue remaining on the sealing surface, and minimizing bacterial growth. While maintaining a good seal, the number of parts in the sealing lid is reduced, avoiding seal failure caused by improper operation, and also making the food storage container easier to use and more efficient in production.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects: In a first aspect, the present invention provides a sealing cover that fits onto a sealing box, comprising: an integrally formed base, a first protrusion and a second protrusion; the first protrusion extends from one end of the base toward the sealing box, and the second protrusion extends from the other end of the base toward a direction away from the sealing box; The outer surface of the substrate and the outer surface of the first boss together form a sealing surface. A sealing rib is provided circumferentially on the sealing surface. The sealing rib abuts against the inner wall of the sealing box and is interference-fitted with the inner wall of the sealing box. The upper end of the sealing box abuts against the lower end of the second boss.

[0006] In some implementations, the sealing cap is an integrally molded silicone part, the sealing ribs are elastically deformable, and there are at least two ribs; one of the sealing ribs is located at the lower end of the first boss, and the remaining sealing ribs are distributed between the lower end of the second boss and the lower end of the first boss.

[0007] In some implementations, multiple sealing ribs are circumferentially wound around the sealing surface at equal intervals; and the thickness of the sealing ribs gradually decreases from the lower end of the second boss to the lower end of the first boss.

[0008] In some implementations, the substrate has a first base surface and a second base surface arranged relatively parallel to each other, with the second base surface facing the sealing box; the first base surface and the second base surface have a center line; on any cross-section passing through the center line, the second base surface and the sealing surface have an inclination angle α, where α satisfies: 82° < α < 87°.

[0009] In some implementations, the inclination angle α between the second base surface and the sealing surface is 86°.

[0010] In some implementations, the second boss has a clearance surface that is in contact with the first base surface; on any cross-section passing through the center line, the first base surface and the clearance surface have an inclination angle β, and the inclination angles α and β satisfy the relationship: α≥180°-β.

[0011] Secondly, this utility model provides a food storage box, including a sealed box and the aforementioned sealed lid; The sealed box includes a box bottom, a box wall, and a receiving cavity formed by the box bottom and the box wall, and the sealing cover is disposed at the opening of the receiving cavity; The side of the substrate facing away from the receiving cavity is the first base surface; the sealing rib abuts against the inner side of the box wall, and the second protrusion abuts against the edge of the box wall and extends outward beyond the edge of the box wall.

[0012] In some implementations, a valve component is also included. The base has a valve groove on one side of the first base surface. The valve component is rotatably mounted on the base and can fall entirely into the valve groove.

[0013] In some implementations, the valve component includes a sealing part and a rotating part. In the valve groove, the base is provided with a first through hole and a second through hole, both of which penetrate the base. The sealing part is detachably inserted into the first through hole, and the rotating part is rotatably disposed in the second through hole. The valve component rotates on the base with the second through hole as the center.

[0014] In some implementations, both the valve component and the valve groove are elongated structures with matching shapes. When the valve component is completely inserted into the valve groove, the top surface of the valve component is flush with or protrudes from the first base surface.

[0015] In summary, this utility model has at least the following advantages: 1. The sealing cap provided by this utility model has the sealing ribs circumferentially set on the sealing surface by integral molding. Compared with the existing sealing method, it is easier to clean, food residue is basically not left on the sealing surface, and bacteria and mold are not easy to grow with long-term use.

[0016] 2. The sealing cap provided by this utility model can significantly reduce the number of parts of the sealing cap while ensuring an effective and stable sealing effect, thereby avoiding sealing failure caused by improper operation during use.

[0017] 3. The food storage container provided by this utility model, with its sealing lid, is simpler and more convenient to use. Furthermore, during production, the number of parts is significantly reduced, resulting in fewer production steps and higher production efficiency. Attached Figure Description

[0018] Figure 1 This is an axonometric view of the sealing cover of Example 1.

[0019] Figure 2 for Figure 1 AA section view in the image.

[0020] Figure 3 for Figure 2 Enlarged view of point B in the image.

[0021] Figure 4 This is a schematic diagram showing the positional relationship between tilt angle α and tilt angle β in Example 1.

[0022] Figure 5 This is an axonometric view of the food storage box in Example 2.

[0023] Figure 6 This is an exploded view of the food storage container from Example 2.

[0024] Figure 7 for Figure 5 CC section view in the image.

[0025] Figure 8 for Figure 7 A magnified view of point D in the image.

[0026] Figure 9 This is an axonometric view of the food storage boxes after they are stacked, as shown in Example 3.

[0027] Figure 10 for Figure 9EE section view.

[0028] Marked in the image: 100. Food storage containers; 1. Sealing cap; 11. Base; 111. First base surface; 112. Second base surface; 113. Valve groove; 114. First through hole; 115. Second through hole; 12. First boss; 13. Second boss; 131. Clearance surface; 14. Sealing surface; 141. Sealing rib; 15. Stacking groove. 2. Sealed box; 21. Box bottom; 22. Box wall; 23. Receiving cavity; 3. Air valve components; 31. Sealing part; 32. Rotating part; L, centerline; α, the inclination angle between the second base plane and the sealing surface; β, the inclination angle between the first base plane and the free-spaced surface; γ, the angle of inclination between the bottom of the box and the outer side of the box wall. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] Example 1: Please see Figures 1-3 This embodiment provides a sealing cap 1, which is fitted onto a sealing box 2 to seal the accommodating space of the sealing box 2. The sealing cap 1 includes an integrally formed base 11, a first protrusion 12, and a second protrusion 13. The first protrusion 12 and the second protrusion 13 are both disposed on the edge of the base 11. The first protrusion 12 extends from one end of the base 11 toward the sealing box 2, and the second protrusion 13 extends from the other end of the base 11 away from the sealing box 2.

[0034] Specifically, the outer surface of the base 11 and the outer surface of the first boss 12 together form a sealing surface 14. A sealing rib 141 is circumferentially provided on the sealing surface 14. The sealing rib 141 abuts against the inner wall of the sealing box 2 and is interference-fitted with the inner wall of the sealing box 2. The upper end of the sealing box 2 abuts against the lower end of the second boss 13. In this embodiment, the sealing surface 14 can extend to the area of ​​the second boss 13.

[0035] The entire sealing cap 1 is manufactured as a single piece, and the sealing ribs 141 are also integrally formed and positioned circumferentially on the sealing surface 14. There are no grooves or gaps between the sealing ribs 141 and the sealing surface 14, meaning that food residue only comes into contact with the sealing surface 14 at most during food contact. Unlike existing technologies, cleaning does not require removing the sealing ring or strip first, making cleaning much more convenient. After cleaning, food residue is less likely to remain between the sealing surface 14 and the sealing ribs 141, and bacteria and mold do not grow on the sealing cap 1 during long-term use.

[0036] In addition to achieving a better seal, the interference fit between the sealing cap 1 and the sealing box 2 also prevents the sealing cap 1 from being pulled outward, ensuring a firm connection between the sealing cap 1 and the sealing box 2. The lower end of the second protrusion 13 abuts against the sealing box 2, effectively limiting the position of the sealing cap 1. At the same time, the second protrusion 13 also provides an operating position for opening the sealing cap 1, providing a leverage point for opening the sealing cap 1.

[0037] While ensuring an effective and stable seal, the number of parts in the sealing cover 1 is reduced to one, with the original sealing and locking parts all integrally molded. Unlike existing solutions, there is no need to assemble each component before fitting and fastening it to the sealing box 2. This avoids sealing failure caused by improper assembly or insecure fastening of the sealing cover 1.

[0038] In some embodiments, the sealing cap 1 is an integrally molded silicone part, and the sealing ribs 141 are elastically deformable, and at least two ribs are provided. One sealing rib 141 is located at the lower end of the first protrusion 12, and the remaining sealing ribs 141 are distributed between the lower end of the second protrusion 13 and the lower end of the first protrusion 12. The integral molding is achieved using a silicone mold, and the material meets food-grade requirements. Furthermore, the elastically deformable sealing ribs 141 better achieve an interference fit effect, ensuring effective sealing and a firm connection between the sealing cap 1 and the sealing box 2. During the engagement of the sealing cap 1 and the sealing box 2, the sealing rib 141 located at the lower end of the first protrusion 12 will abut against the inner wall of the sealing box 2 before the other sealing ribs 141. As the first protrusion 12 assembly enters the sealing box 2, the sealing rib 141 deforms, causing a slight deformation of the end of the first protrusion 12, guiding the first protrusion 12 to accurately engage and abut against the inner wall of the sealing box 2. Then, the other sealing ribs 141 successively abut and deform against the inner wall of the sealing box 2 until the lower end of the second protrusion 13 abuts against the edge of the sealing box 2, completing the final sealing connection. However, if only one sealing rib 141 is provided, its sealing effect is limited, the sealing firmness is poor, and the sealing cover 1 is prone to detaching from the sealing box 2.

[0039] In a further embodiment, multiple sealing ribs 141 are circumferentially wound around the sealing surface 14 at equal intervals. Furthermore, the thickness of the sealing ribs 141 gradually decreases from the lower end of the second boss 13 to the lower end of the first boss 12. This equidistant circumferential arrangement facilitates uniform connection between the sealing ribs 141 and the sealing surface 14 during molding, simplifying production. The gradually decreasing thickness of the sealing ribs 141 ensures better sealing performance for those closer to the end of the sealing box 2. Simultaneously, reducing the deformation of the sealing ribs 141 near the lower end of the first boss 12 ensures that the sealing ribs 141 at other positions can effectively achieve an interference fit connection.

[0040] Please Figures 1-3 Based on the above, refer to Figure 4In some embodiments, the substrate 11 has a first base surface 111 and a second base surface 112 arranged relatively parallel to each other, with the second base surface 112 facing the sealing box 2. The first base surface 111 and the second base surface 112 have a center line L, which passes perpendicularly through the rotational symmetry center of the substrate 11. On any cross-section passing through the center line L, the second base surface 112 and the sealing surface 14 have an inclination angle α, where α satisfies: 82° < α < 87°. In this embodiment, α is an angle less than 90°. The sealing rib 141 is disposed on the sealing surface 14, and the angle between the sealing surface 14 and the second base surface 112 affects the sealing condition between the sealing cover 1 and the sealing box 2, as well as the firmness of the connection after sealing.

[0041] When the inclination angle α between the second base surface 112 and the sealing surface 14 is too large, the force direction of the sealing rib 141 and the inner wall of the sealing box 2 is close to the direction of the center line L. At this time, the resistance between the sealing cover 1 and the sealing box 2 is large, and a large external force is required during the closing or opening process, resulting in a poor user experience.

[0042] If the inclination angle α between the second base surface 112 and the sealing surface 14 is too small, the component of the force between the sealing rib 141 and the inner wall of the sealing box 2 in the center line L axis will decrease, making the sealing cover 1 too easy to remove from the sealing box 2. If it is accidentally overturned or dropped during operation, the food placed inside the sealing box 2 can easily push open the sealing cover 1 and spill outward.

[0043] When α satisfies 82°<α<87°, it perfectly balances the conditions of not easily spilling and requiring no effort to open, ensuring both ease of use and a secure seal.

[0044] To ensure that a single sealing cap 1 can be matched with sealing boxes 2 of multiple capacity specifications, further reducing the production cost of the sealing cap 1, and simultaneously facilitating the processing and production of the molding die, in this embodiment, the second base surface 112 and the sealing surface 14 have an inclination angle α of 86°.

[0045] Please continue reading. Figures 1-4 In other embodiments, the second boss 13 has a clearance surface 131 that connects with the first base surface 111. On any cross-section passing through the centerline L, the first base surface 111 and the clearance surface 131 have an inclination angle β, where the inclination angles α and β satisfy the relationship: α ≥ 180° - β. The clearance surface 131 and the first base surface 111 form a downwardly recessed structure, which effectively reduces the space occupied by the sealing cap 1. The size of the inclination angle β affects the volume of the sealing cap 1 and the gripping force angle. When α ≥ 180° - β, the sealing cap 1 achieves optimal sealing effect and optimal pull-out force structure while using less molding material, further reducing the production cost of the sealing cap 1.

[0046] After the sealing cover 1 and the sealing box 2 are interference-fitted, multiple sealing boxes 2 can be stacked, with the upper sealing box 2 placed on the lower sealing cover 1. The recessed space formed by the clearance surface 131 and the first base surface 111 can effectively limit the bottom of the sealing box 2, further ensuring that the upper sealing box 2 will not slip and fall after stacking.

[0047] In summary, the sealing cap provided in this embodiment uses an integral molding method to circumferentially set the sealing ribs on the sealing surface, making it less likely for food residue to remain on the sealing surface. Compared with existing sealing methods, it is easier to clean and less prone to the growth of bacteria and mold over long-term use.

[0048] Secondly, while ensuring an effective and stable sealing effect, the number of parts in the sealing cap is significantly reduced, thereby avoiding sealing failure caused by improper operation during use.

[0049] Example 2: Please Figures 1-4 Based on the above, refer to Figures 5-8 This embodiment provides a food storage container 100, including a sealed container 2 and a sealing lid 1 mentioned in Embodiment 1.

[0050] The sealed box 2 includes a bottom 21, a wall 22, and a cavity 23 formed by the bottom 21 and the wall 22. The cavity 23 is used to store food in various states, such as liquid or porridge-like food. A sealing lid 1 is disposed at the opening of the cavity 23, thereby sealing the entire cavity 23.

[0051] The side of the base 11 facing away from the receiving cavity 23 is the first base surface 111, and the side opposite to the first base surface 111 is the second base surface 112. The sealing rib 141 abuts against the inner side of the box wall 22, and the second protrusion 13 abuts against the edge of the box wall 22 and extends outward beyond the edge of the box wall 22. The second protrusion 13 protrudes outward beyond the edge of the box wall 22, providing a point of leverage for removing the sealing cover 1, and making it easier to push the edge of the second protrusion 13 by hand.

[0052] The one-piece molded sealing cap 1 effectively reduces the number of parts in the food storage container 100, thereby achieving a simpler, easier-to-use, and easier-to-clean user experience while ensuring a good seal. During the manufacturing process, the one-piece molding of the sealing cap 1 eliminates the need for the production and assembly of multiple parts, reduces production steps, and improves the production efficiency of the food storage container 100.

[0053] In some embodiments, the portion of the second protrusion 13 extending outward from the edge of the box wall 22 should be as small as possible. In this embodiment, the distance from the second protrusion 13 to the edge of the box wall 22 is less than 3mm. While ensuring sufficient size for easy removal of the sealing cap 1 by hand, a smaller extension can effectively prevent user error or accidental bumps that could open the sealing cap 1.

[0054] In some embodiments, the food storage container 100 also includes an air valve 3. The base 11 has an air valve groove 113 on one side of the first base surface 111. The air valve 3 is rotatably mounted on the base 11, and the entire air valve 3 can fall into the air valve groove 113. An air hole communicating with the outside is generally provided in the air valve groove 113. This air hole serves to rebalance the internal and external air pressure when the sealing cover 1 is closed. This prevents the air pressure inside the receiving cavity 23 from rising during the closing process of the sealing cover 1, which would cause the cover to be forced open by the air pressure inside the receiving cavity 23 after closing.

[0055] After the air vents reach equilibrium with the external air pressure in the receiving cavity 23, the rotating air valve 3 can block the air vents, thus isolating the food stored in the receiving cavity 23 from the outside air and preventing external contaminants from entering the receiving cavity 23, achieving complete sealing and preservation.

[0056] When food needs to be heated, the air pressure inside the cavity 23 rises due to the increased temperature. The vent can effectively rebalance the internal and external air pressure. At this time, the valve 3 rotates and moves the vent to ensure a smooth balancing process.

[0057] Furthermore, the valve component 3 includes a sealing part 31 and a rotating part 32. Within the valve groove 113, the base 11 has a first through hole 114 and a second through hole 115, both penetrating the base 11. The first through hole 114 corresponds to the aforementioned air hole. The sealing part 31 is detachably inserted into the first through hole 114, and the rotating part 32 is rotatably disposed within the second through hole 115. The valve component 3 rotates on the base 11 with the second through hole 115 as its center. During production, the first through hole 114 and the second through hole 115 are integrally formed on the substrate. The valve component 3 can also be implemented using an integrally molded silicone part. If sealing the first through hole 114 is required, the valve component 3 is screwed into the valve groove 113, and the sealing part 31 is pressed into the first through hole 114 to achieve a seal. When it is necessary to open the first through hole 114, simply pull out the sealing part 31 and rotate the air valve 3 to move the sealing part 31 away from the first through hole 114. It is convenient to use and easy to manufacture and install.

[0058] In some embodiments, both the valve component 3 and the valve groove 113 are elongated structures with matching shapes. The elongated structure of the valve component 3 allows the rotation center to be set at one end, making it easier to rotate. Furthermore, when the valve component 3 is completely inserted into the valve groove 113, the top surface of the valve component 3 is flush with or protrudes from the first base surface 111. At this time, if the bottom of the box 21 is flush with the first base surface 111, the top surface of the valve component 3 should be flush with the first base surface 111; if the bottom of the box 21 is recessed into the receiving cavity 23, the top surface of the valve component 3 can protrude from the first base surface 111. Obviously, having the top surface of the valve component 3 flush with or protruding from the first base surface 111 will not cause the valve component 3 to contact the bottom of the box 21, resulting in the upper food storage box 100 tilting. However, having the top surface of the valve component 3 flush with or protruding from the first base surface 111 can ensure the strength of the valve component 3 and also facilitate blind operation of the valve component 3.

[0059] Of course, in other embodiments, the top surface of the valve component 3 may also be lower than the first base surface 111, thereby satisfying all cases of the box bottom 21. However, when the top surface of the valve component 3 is lower than the first base surface 111, the valve component 3 is often too thin overall, making it more difficult to pull out the sealing part 31. At the same time, the yield rate of an excessively thin valve component 3 will also decrease during production.

[0060] In the length direction of the elongated structure, the length of the valve component 3 is less than that of the valve groove 113. Fingers can be inserted into the valve groove 113 to pry the valve component 3, which facilitates the separation of the sealing part 31 from the first through hole 114.

[0061] In summary, the food storage container provided in this embodiment, with its sealing lid, is simpler and more convenient to use. Furthermore, during production, the number of parts is significantly reduced, resulting in fewer production steps and higher production efficiency.

[0062] Example 3: Please Figures 1-8 Based on the above, refer to Figures 9-10 This embodiment provides a food storage container 100, which is similar to the food storage container 100 provided in Embodiment 2. The difference is that the second protrusion 13 and the base 11 form a stacking groove 15, and the bottom dimension of the stacking groove 15 is not less than the outer dimension of the box bottom 21. The first base surface 111 and the second base surface 112 of the base 11 have a centerline L. On any cross-section passing through the centerline L, the box wall 22 and the outer surface of the box bottom 21 have an inclination angle γ. The inclination angle γ and the inclination angle β have the following relationship: γ < β. At this time, the sealed box 2 can fall completely into the stacking groove 15, and the box bottom 21 can smoothly abut against the first base surface 111. When γ < β, it ensures that the box bottom 21 can completely abut against the sealing cover 1, and there will be no interference between the box wall 22 and the second protrusion 13, preventing the box bottom 21 from smoothly abutting against the sealing cover 1.

[0063] Of course, in this embodiment, the sealed box 2 can be made of food-grade rigid plastic, such as PE (polyethylene) plastic, PP (polypropylene) plastic, or glass. The connection between the box wall 22 and the interior of the box bottom 21 is formed with large rounded corners, eliminating hard-to-clean areas and facilitating cleaning of the sealed box 2. Simultaneously, the large rounded corners allow spoons to easily reach food such as ice cream and red bean paste, ensuring the food is cleaned and reducing waste. Furthermore, the sealed box 2 can also be used as a container for consumption, making it more convenient to use.

[0064] The above description is merely an example and illustration of the structure of this utility model, and while the description is quite specific and detailed, it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these obvious substitutions all fall within the protection scope of this utility model.

Claims

1. A sealing cap, which fits onto a sealing box (2), characterized in that, include: An integrally formed base (11), a first boss (12) and a second boss (13); the first boss (12) extends from one end of the base (11) toward the sealing box (2), and the second boss (13) extends from the other end of the base (11) toward the direction away from the sealing box (2); The outer side of the base (11) and the outer side of the first boss (12) together form a sealing surface (14). The sealing surface (14) is provided with sealing ribs (141) in the circumferential direction. The sealing ribs (141) abut against the inner wall of the sealing box (2) and the sealing ribs (141) are interference-fitted with the inner wall of the sealing box (2). The upper end of the sealing box (2) abuts against the lower end of the second boss (13).

2. The sealing cap according to claim 1, characterized in that, The sealing cap (1) is an integrally molded silicone part. The sealing ribs (141) are elastically deformable and at least two are provided. One of the sealing ribs (141) is located at the lower end of the first boss (12), and the remaining sealing ribs (141) are distributed between the lower end of the second boss (13) and the lower end of the first boss (12).

3. The sealing cap according to claim 2, characterized in that, Multiple sealing ribs (141) are circumferentially wound around the sealing surface (14) at equal intervals; and the thickness of the protrusion of the sealing ribs (141) gradually decreases from the lower end of the second boss (13) to the lower end of the first boss (12).

4. The sealing cap according to claim 1, characterized in that, The substrate (11) has a first base surface (111) and a second base surface (112) arranged in parallel with each other, the second base surface (112) facing the sealing box (2); the first base surface (111) and the second base surface (112) have a center line (L); on any cross section passing through the center line (L), the second base surface (112) and the sealing surface (14) have an inclination angle α, α satisfying: 82°<α<87°.

5. The sealing cap according to claim 4, characterized in that, The inclination angle α between the second base surface (112) and the sealing surface (14) is 86°.

6. The sealing cap according to claim 4, characterized in that, The second boss (13) is provided with a clearance surface (131) that is connected to the first base surface (111); on any cross section passing through the center line (L), the first base surface (111) and the clearance surface (131) have an inclination angle β, and the inclination angle α and the inclination angle β satisfy the relationship: α≥180°-β.

7. A food storage container, characterized in that, Includes a sealing box (2) and a sealing cap (1) as described in any one of claims 1-6; The sealed box (2) includes a box bottom (21), a box wall (22), and a receiving cavity (23) formed by the box bottom (21) and the box wall (22), and the sealing cover (1) is disposed at the opening of the receiving cavity (23); The base (11) has a first base surface (111) facing away from the receiving cavity (23); the sealing rib (141) abuts against the inner side of the box wall (22); the second boss (13) abuts against the edge of the box wall (22) and extends outward from the edge of the box wall (22).

8. The food storage container according to claim 7, characterized in that, It also includes a valve component (3), and the base (11) has a valve groove (113) on one side of the first base surface (111). The valve component (3) is rotatably disposed on the base (11), and the entire valve component (3) can fall into the valve groove (113).

9. The food storage container according to claim 8, characterized in that, The air valve component (3) includes a sealing part (31) and a rotating part (32). In the air valve groove (113), the base (11) is provided with a first through hole (114) and a second through hole (115). The first through hole (114) and the second through hole (115) both penetrate the base (11). The sealing part (31) can be separably inserted into the first through hole (114). The rotating part (32) is rotatably disposed in the second through hole (115). The air valve component (3) rotates on the base (11) with the second through hole (115) as the center.

10. The food storage container according to claim 8, characterized in that, The air valve component (3) and the air valve groove (113) are both elongated structures with matching shapes. When the air valve component (3) falls completely into the air valve groove (113), the top surface of the air valve component (3) is flush with or protrudes from the first base surface (111).

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