Cover body and cooking utensil

Abstract

The utility model provides a cover body and a cooking utensil. The cover body comprises an inner cover, an outer cover and a sealing piece. The inner cover is provided with a first convex rib, the outer cover is provided with a second convex rib, the first convex rib and the second convex rib are correspondingly arranged and form the side wall of the steam channel, and a mounting gap is formed between the first convex rib and the second convex rib. The sealing piece comprises a main body part, a positioning part and a limiting part. The positioning part is at least partially positioned in the mounting gap; the limiting part comprises a first limiting part which is at least partially positioned on the circumferential outer side of the first convex rib, and / or a second limiting part which is at least partially positioned on the circumferential outer side of the second convex rib. The thickness of the first limiting part or the sum of the thickness of the first limiting part and the thickness of the second limiting part is larger than the distance between the installation gaps. And the first limiting part and the second limiting part respectively extend towards different directions to form bidirectional limiting. The first limiting part and the second limiting part can effectively clamp the circumferential outer sides of the first convex rib and the second convex rib, and the sealing piece is prevented from being disengaged from the installation gap.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensil technology, and more specifically to a lid and a cooking utensil. Background Technology

[0002] In traditional cap structures, the seal is typically fixed between the inner and outer caps through simple compression or clamping. An excessively thick seal may prevent the inner and outer caps from closing completely, affecting assembly; while an excessively thin seal may fail to effectively fill the installation gap between the inner and outer caps, resulting in decreased sealing performance.

[0003] Therefore, there is a need to provide a lid and cooking utensil to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a cover, comprising:

[0006] The inner cover and the outer cover are detachably connected. The inner cover is provided with a first rib, and the outer cover is provided with a second rib. The first rib and the second rib are correspondingly provided and form a steam passage sidewall. An installation gap b is formed between the first rib and the second rib in the height direction of the cover body.

[0007] A sealing element, which is connected to the inner cover and the outer cover, comprising:

[0008] The main body is at least partially located within the steam passage;

[0009] A positioning part is connected to the circumferential outer side of the main body, and the positioning part is at least partially located in the mounting gap;

[0010] A limiting portion, the limiting portion being connected to the positioning portion, the limiting portion including a first limiting portion at least partially located circumferentially outside the first protruding rib, and / or a second limiting portion at least partially located circumferentially outside the second protruding rib;

[0011] Wherein, the thickness of the first limiting part is a1, the thickness of the second limiting part is a2, and the spacing of the installation gap is b, satisfying: 5b≥a1+a2≥2.5b, or 5b≥a1≥2.5b.

[0012] According to this solution, the first limiting part and the second limiting part are located on the circumferential outer side of the first rib and the circumferential outer side of the second rib, respectively. That is, the first limiting part and the second limiting part extend in different directions, forming a bidirectional limiting. The total thickness of the first limiting part and the second limiting part is greater than the width b of the installation gap, so it can effectively lock the circumferential outer side of the first rib and the second rib, forming a stable mechanical lock and preventing the seal from falling out of the installation gap.

[0013] Optionally, the spacing b of the installation gap preferably satisfies: 4b≥a1+a2≥3b.

[0014] According to this plan,

[0015] Optionally, the included angle between the first limiting part and the second limiting part is 120° to 180°.

[0016] According to this solution, the included angle range of 120° to 180° can make the force on the seal evenly distributed on the first limiting part and the second limiting part, avoiding excessive stress on one side, while adapting to different installation gaps and tolerances, ensuring that the seal can remain stable and fixed under various manufacturing error conditions.

[0017] Optionally, a connecting hole is formed on the circumferential inner side of the first rib, and at least a portion of the main body passes through the connecting hole; and / or

[0018] At least a portion of the first limiting portion extends in a direction parallel to the extension direction of the main body portion; and / or

[0019] At least a portion of the main body extends in a direction parallel to the direction of extension of the main body.

[0020] According to this solution, the first limiting part and the main body can be stably clamped onto the first rib, improving the stability and sealing performance of the seal. During installation, the main body and limiting part of the seal can precisely align with the first rib, reducing errors during assembly and improving the consistency and precision of the sealing structure.

[0021] Optionally, the thickness of the first limiting portion is greater than the thickness of the second limiting portion.

[0022] According to this solution, the first limiting part is set to a relatively thick thickness to ensure that the first limiting part can firmly clamp the first protruding rib.

[0023] Optionally, the positioning part is sealed to the first rib and / or the second rib.

[0024] According to this solution, the sealing performance of the steam passage is ensured by sealing the positioning part with the first and / or second ribs.

[0025] Optionally, the seal further includes a lip, at least a portion of which is located in the mounting gap, and in the assembled state, the lip is in contact with the second rib.

[0026] According to this solution, an additional sealing structure is provided by setting the lip, which enables the seal to be applied to a wider range of application scenarios. In the assembled state, the lip fits into the second rib, enhancing the sealing reliability of the system.

[0027] Optionally, in the unassembled state, the included angle between the lip and the positioning part of the seal is 15° to 60°.

[0028] According to this design, the defined angle range between the lip and the positioning part allows the deformation of the lip to smoothly adapt to pressure changes during the installation of the outer and inner covers, providing better sealing and maintaining long-term stability. The acute angle between the lip and the positioning part allows for downward pressure on the lip during the installation of the inner and outer covers, reducing the need for manual adjustments and improving assembly efficiency.

[0029] Optionally, the thickness of the lip is a3, the thickness of the positioning part is a4, and a3+a4<b.

[0030] According to this solution, the appropriate thickness of the lip ensures the deformation capability of the seal during installation, and can be finely adjusted according to the shape changes of the first or second rib, thereby improving the sealing performance.

[0031] Optionally, the inner cover is provided with a first buckle adapted to connect with the outer cover, the first buckle being spaced apart from the first protruding rib, and the distance between the first buckle and the first protruding rib being greater than the thickness of the first limiting portion; and / or

[0032] Optionally, the outer cover is provided with a second buckle adapted to connect with the inner cover, the second buckle being spaced apart from the second rib, and the distance between the second buckle and the second rib being greater than the thickness of the second limiting portion.

[0033] According to this solution, the buckles and seals are set up compactly and relatively independently, which improves the space utilization of the cover.

[0034] A second aspect of this utility model provides a cooking utensil, including a lid as described above.

[0035] According to this solution, the cover body included above has similar technical effects to the cover body.

[0036] Optionally, the cooking appliance further includes a steam valve, and the second rib is formed on the steam valve.

[0037] According to this solution, the sealing structure between the steam valve and the inner cover is reliable. Attached Figure Description

[0038] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0039] Figure 1 This is a partial schematic diagram of a cooking appliance according to a preferred embodiment of the present invention;

[0040] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the diagram; and

[0041] Figure 3 This is a cross-sectional view of the seal.

[0042] Reference numerals

[0043] 100: Cover

[0044] 101: Installation gap

[0045] 110: Inner cover

[0046] 111: First protruding rib

[0047] 112: Connecting hole

[0048] 120: Outer cover

[0049] 121: Second protruding rib

[0050] 130: Seals

[0051] 131: Main Body

[0052] 132: Positioning Department

[0053] 133: First limiting part

[0054] 134: Second limiting part

[0055] 135: Lips

[0056] 141: First buckle

[0057] 142: Second buckle

[0058] 200:Cooker

[0059] 300: Steam valve

[0060] 301: Steam passage

[0061] DH: Altitude Detailed Implementation

[0062] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0064] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0065] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0066] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0067] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0068] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0069] Reference Figure 1This utility model provides a lid 100 for sealing containers. Optionally, the lid 100 is used as a cooking utensil. The cooking utensil of this utility model can be used as a rice cooker and / or an electric pressure cooker to meet diverse cooking needs. In addition to cooking rice, it can also have functions such as cooking porridge, making soup, steaming vegetables, and stewing meat.

[0070] In this design, the cover 100 includes an inner cover 110 and an outer cover 120. The inner cover 110 and the outer cover 120 are detachably connected. The inner cover 110 is provided with a first rib 111, and the outer cover 120 is provided with a second rib 121. The first rib 111 and the second rib 121 are correspondingly arranged and form the sidewall of the steam passage 301. An installation gap 101 is formed between the first rib 111 and the second rib 121 in the height direction DH of the cover 100.

[0071] Reference Figures 1-3 To ensure the airtightness of the cover 100, a sealing element 130 is provided between the inner cover 110 and the outer cover 120. The first rib 111 and the second rib 121 are opposite each other along the height direction of the cover 100 and form an installation gap 101. The sealing element 130 is at least partially disposed in the installation gap 101, and is sealingly connected to both the inner cover 110 and the outer cover 120. Optionally, the sealing element 130 is sealingly connected to both the first rib 111 and the second rib 121.

[0072] The seal 130 can be made of elastic materials such as rubber or silicone. The portion of the seal 130 that is clamped in the installation gap 101 needs to be of appropriate thickness to ensure a seal with the first rib 111 and the second rib 121. If the seal 130 is too thick, the inner cover 110 and the outer cover 120 may not be able to close properly, affecting assembly, and may also cause the seal 130 to be over-compressed, deformed, or damaged; if the seal 130 is too thin, it cannot effectively fill the installation gap 101, resulting in poor sealing performance between the inner cover 110 and the outer cover 120.

[0073] The seal 130 includes a main body 131, a positioning portion 132, and a limiting portion. The main body 131 is at least partially located within the steam passage 301. The positioning portion 132 is connected to the circumferential outer side of the main body 131 and is at least partially located in the mounting gap 101. The limiting portion is connected to the positioning portion 132 and is located circumferentially outer side of the first rib 111 or the second rib 121. Thus, the seal 130 forms a structure that is clamped around the periphery of the first rib 111 or the periphery of the second rib 121.

[0074] Due to the limited space within the cover 100, the limiting part cannot be made thick enough. In some usage scenarios, the limiting part may come out of the installation gap 101, affecting the sealing performance between the inner cover 110 and the outer cover 120.

[0075] In this design, the limiting portion includes a first limiting portion 133 located at least partially on the circumferentially outer side of the first rib 111, and / or a second limiting portion 134 located at least partially on the circumferentially outer side of the second rib 121. Thus, the main body 131 and the limiting portion are located on the circumferentially inner side and axially outer side of the first rib 111 or the second rib 121, respectively. The first limiting portion 133 and the second limiting portion 134 are located on the circumferentially outer side of the first rib 111 and the circumferentially outer side of the second rib 121, respectively, meaning they extend in different directions. The thickness of the first limiting portion 133 is a1, the thickness of the second limiting portion 134 is a2, and the spacing of the mounting gap 101 is b, satisfying: 5b ≥ a1 + a2 ≥ 2.5b, or 5b ≥ a1 ≥ 2.5b. For example, a1 + a2 equals 2.5b, 3b, 3.5b, 4b, 4.5b, or 5b, preferably a1 + a2 = 3.5b. For example, a1 equals 2.5b, 3b, 3.5b, 4b, 4.5b, or 5b, preferably a1 = 3.5b. Optionally, the ratio of a1 and a2 can be further adjusted according to usage requirements to adapt to the design of different installation gaps 101.

[0076] In this design, the first limiting part 133 and the second limiting part 134 can form a bidirectional limiting mechanism. The total thickness of the two limiting parts is greater than the width b of the installation gap 101, thus effectively locking the outer circumferential surfaces of the first rib 111 and the second rib 121, forming a stable mechanical lock and preventing the seal 130 from coming out of the installation gap 101. Through this design, the seal 130 can form a stable and efficient sealing structure between the first rib 111 and the second rib 121, while improving assembly convenience and long-term reliability.

[0077] In some embodiments of this utility model, the included angle α between the first limiting part 133 and the second limiting part 134 is 120° to 180°. The included angle α can be, but is not limited to, 120°, 135°, 150°, 165°, and 180°, and is preferably 150°. The included angle range of 120° to 180° can make the force on the sealing member 130 evenly distributed on the first limiting part 133 and the second limiting part 134, avoiding excessive stress on one side, and at the same time, it can adapt to different installation gaps 101 and tolerances, ensuring that the sealing member 130 can remain stable and fixed under various manufacturing error conditions.

[0078] In this design, when the main body 131 is located circumferentially inside the first rib 111, the seal 130 can be installed onto the inner cover 110. When the main body 131 is located circumferentially inside the second rib 121, the seal 130 can be installed onto the outer cover 120. The main body 131 and the limiting part of the seal 130 can form a clamping structure, therefore, the seal 130 can be pre-installed onto either the first rib 111 or the second rib 121. This arrangement facilitates the assembly and disassembly of the cover 100.

[0079] The following description focuses on the installation of the seal 130 onto the inner cover 110.

[0080] A connecting hole 112 is formed on the inner circumferential side of the first protruding rib 111, and at least the main body 131 passes through the connecting hole 112. Optionally, the connecting hole 112 penetrates the inner cover 110 and is connected to the steam passage 301. The container can communicate with the outside through the steam passage 301, which can be used for venting or depressurizing the interior of the container.

[0081] Optionally, at least a portion of the first limiting portion 133 extends in a direction parallel to the extending direction of the first rib 111. Optionally, at least a portion of the main body portion 131 extends in a direction parallel to the extending direction of the first rib 111. The first limiting portion 133 and the main body portion 131 can be stably clamped to the first rib 111, improving the stability and sealing performance of the seal 130. During installation, the main body portion 131 and the limiting portion of the seal 130 can precisely align with the first rib 111, reducing errors during assembly and improving the consistency and precision of the sealing structure.

[0082] In some embodiments of this utility model, the thickness of the first limiting part 133 is greater than the thickness of the second limiting part 134. As can be seen from the foregoing, the first limiting part 133 cooperates with the main body part 131 to form a structure for clamping the first protruding rib 111. Therefore, the first limiting part 133 is set to a thicker thickness to ensure that the first limiting part 133 can firmly clamp the first protruding rib 111.

[0083] In some embodiments of this utility model, the positioning part 132 is sealed to the first rib 111 and / or the second rib 121.

[0084] Optionally, the positioning part 132 is set with a suitable thickness to ensure that the positioning part 132 is sealed to the first rib 111 and the second rib 121 respectively. The suitable thickness ensures that the positioning part 132 can fully fill the installation gap 101 between the first rib 111 and the second rib 121. While ensuring the sealing effect, the first rib 111 and the second rib 121 also have a certain pressing effect on the positioning part 132, causing the seal 130 to shift or loosen.

[0085] Optionally, the seal 130 further includes a lip 135, at least a portion of which is located in the mounting gap 101, and in the assembled state, the lip 135 abuts against the second rib 121. Optionally, the lip 135 can deform under the compression of the first rib 111 or the second rib 121. The positioning part 132 and the lip 135 cooperate to achieve a sealing connection between the first rib 111 and the second rib 121. The lip 135 provides an additional sealing structure, enabling the seal 130 to be applied to a wider range of applications. The lip 135 can self-adaptively seal through its own deformation, enhancing the sealing reliability of the system.

[0086] Based on the above embodiments, when the inner cover 110 and the outer cover 120 are installed, the positioning part 132 is pressed and sealed with the first rib 111, and the lip 135 is pressed and sealed with the second rib 121. Through the cooperation of the positioning part 132 and the lip 135, a complementary sealing structure is formed, avoiding the local failure that may occur with a single sealing component, and improving the stability and reliability of the seal.

[0087] In some embodiments of this invention, in the unassembled state, the included angle β between the lip 135 and the positioning part 132 of the sealing member 130 is 15° to 60°. The included angle β can be, but is not limited to, 15°, 30°, 45°, or 60°, but is preferably 150°. When the outer cover 120 and the inner cover 110 are installed, the deformation of the lip 135 can smoothly adapt to pressure changes, providing better sealing while maintaining long-term stability. The included angle between the lip 135 and the positioning part 132 is an acute angle, which allows the lip 135 to be pressed down smoothly when the inner cover 110 and the outer cover 120 are installed, reducing the need for manual adjustment and improving assembly efficiency.

[0088] In some embodiments of this invention, the appropriate thickness of the lip 135 ensures the deformability of the seal 130 during installation, allowing for fine-tuning according to the shape changes of the first rib 111 or the second rib 121, thereby improving sealing performance. A thinner lip 135 provides better elasticity and flexibility, enabling it to quickly adapt to the shape of the rib when compressed. Thus, the lip 135 can form a tight seal under relatively low pressure, adapting to different assembly environments.

[0089] In some embodiments of this utility model, the thickness of the lip 135 is a3, and the thickness of the positioning part 132 is a4, wherein a3 + a4 < b. The lip 135 can be pre-compressed due to the included angle β, resulting in elastic deformation. The sum of the thicknesses of the lip 135 and the positioning part 132 is less than the installation gap, ensuring that the outer cover 120 and the inner cover 110 fit together, avoiding assembly difficulties that may result from interference fit.

[0090] In some embodiments of this utility model, the inner cover 110 and the outer cover 120 are detachably connected by a snap fastener.

[0091] Optionally, the inner cover 110 is provided with a first buckle 141 suitable for connection with the outer cover 120. The first buckle 141 is spaced apart from the first rib 111, and the distance between the first buckle 141 and the first rib 111 is greater than the thickness of the first limiting part 133.

[0092] Optionally, the outer cover 120 is provided with a second buckle 142 suitable for connection with the inner cover 110. The second buckle 142 is spaced apart from the second rib 121, and the distance between the second buckle 142 and the second rib 121 is greater than the thickness of the second limiting part 134.

[0093] With this solution, the buckle and the seal 130 are set up in a compact and relatively independent manner, which improves the space utilization of the cover 100.

[0094] Optionally, the lid 100 can be used in a cooking utensil. The cooking utensil includes the lid 100 and the pot body 200. The pot body 200 is used for cooking food, and the lid 100 is used to cover the pot body 200. For example, the lid 100 is connected to the pot body 200 in an openable and closable manner to cover the pot body 200. When the lid 100 covers the pot body 200, a cooking space is formed between the lid 100 and the pot body 200.

[0095] The directional terms used in this article to describe the various parts and components of the cover 100, such as "up", "down", "above", "below", "upward", "downward", "facing upward", and "facing downward", are relative to the cover 100 when it is placed horizontally and upright.

[0096] In this invention, the cover 100 includes an inner cover 110 and an outer cover 120. Optionally, the outer cover 120 is a face cover, located at the outermost side of the cover 100 (i.e., the uppermost side in the figure), forming the outer shell of the cover 100. Optionally, the inner cover 110 is a liner, disposed below the face cover and connected to it. For example, the liner can be connected to the face cover by fasteners or snap-fits. The liner is mainly used to centrally mount various functional components of the cover 100 that sense and control the working status of the cooking appliance, such as sensors and control modules.

[0097] The lid 100 has a shape substantially corresponding to the pot body 200. The lid 100 is closable on the pot body 200; specifically, it is pivotally connected to the pot body 200 via a pivot axis and can freely pivot about the pivot axis between a closed position and an open position relative to the pot body 200, facilitating the closing and opening of the pot body 200. When the lid 100 is closed on the pot body 200, it covers the inner pot, forming a cooking space between them. The lid 100 typically also has a pot rim sealing ring, which can be made of, for example, rubber, and is positioned between the lid 100 and the inner pot to seal the cooking space when the lid 100 is closed.

[0098] The steam passage 301 of the lid 100 connects the cooking space to the outside. Therefore, it is required that, apart from the passage arranged in a preset manner, other areas inside the lid 100 should be relatively sealed to ensure that each component can work relatively independently and to reduce the impact of steam leakage on other electronic components. This solution ensures the sealing of the steam passage 301 through the setting of the sealing element 130.

[0099] Optionally, a steam valve 300 is installed in the steam passage 301. The steam passage 301 is connected to the outside through the steam valve 300. Optionally, the steam valve 300 is installed on the top cover. As mentioned above, the inner cover 110 is provided with a connecting hole 112, which is optionally connected to the cooking space.

[0100] In some embodiments of this invention, a second rib 121 is formed on the steam valve 300. The second rib 121 works together with the seal 130 to reduce the risk of steam leakage along the assembly gap, ensuring a reliable sealing structure between the steam valve 300 and the inner cover 110, thus improving the safety of the cooking appliance.

[0101] It should be noted that the directional terms used in this article to describe the various components and parts of the pot body 200, such as "up," "down," "above," "below," "upward," "downward," "facing upward," and "facing downward," are relative to the pot body 200 when it is placed horizontally and upright. Unless otherwise specified, "inner" in the directional terms "inward," "outward," "towards," "inner side," and "outer side" refers to the area near the center of the pot body 200, and "outer" refers to the area away from the center of the pot body 200.

[0102] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0103] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cover, characterized in that, include: The inner cover and the outer cover are detachably connected. The inner cover is provided with a first rib, and the outer cover is provided with a second rib. The first rib and the second rib are correspondingly provided and form the sidewall of the steam passage. An installation gap is formed between the first rib and the second rib in the height direction of the cover body. A sealing element, which is connected to the inner cover and the outer cover, comprising: The main body is at least partially located within the steam passage; A positioning part is connected to the circumferential outer side of the main body, and the positioning part is at least partially located in the mounting gap; A limiting portion, the limiting portion being connected to the positioning portion, the limiting portion including a first limiting portion at least partially located circumferentially outside the first protruding rib, and / or a second limiting portion at least partially located circumferentially outside the second protruding rib; Wherein, the thickness of the first limiting part is a1, the thickness of the second limiting part is a2, and the spacing of the installation gap is b, satisfying: 5b≥a1+a2≥2.5b, or 5b≥a1≥2.5b.

2. The cover according to claim 1, characterized in that, The spacing b of the installation gap preferably satisfies: 4b≥a1+a2≥3b.

3. The cover according to claim 1, characterized in that, The included angle between the first limiting part and the second limiting part is 120° to 180°.

4. The cover according to any one of claims 1 to 3, characterized in that, A connecting hole is formed on the circumferential inner side of the first protruding rib, and at least a portion of the main body portion passes through the connecting hole; and / or At least a portion of the first limiting portion extends in a direction parallel to the extension direction of the main body portion; and / or At least a portion of the main body extends in a direction parallel to the direction of extension of the main body.

5. The cover according to claim 4, characterized in that, The thickness of the first limiting part is greater than the thickness of the second limiting part.

6. The cover according to claim 1, characterized in that, The positioning part is sealed to the first rib and / or the second rib.

7. The cover according to claim 1 or 6, characterized in that, The seal also includes a lip, at least a portion of which is located in the mounting gap, and in the assembled state, the lip is in contact with the second rib.

8. The cover according to claim 7, characterized in that, In the unassembled state, the angle between the lip and the positioning part of the seal is 15° to 60°; and / or The thickness of the lip is a3, and the thickness of the positioning part is a4, where a3 + a4 < b.

9. The cover according to claim 1, characterized in that, The inner cover is provided with a first buckle adapted to connect with the outer cover, the first buckle being spaced apart from the first protruding rib, and the distance between the first buckle and the first protruding rib being greater than the thickness of the first limiting portion; and / or The outer cover is provided with a second buckle suitable for connection with the inner cover. The second buckle is spaced apart from the second rib, and the distance between the second buckle and the second rib is greater than the thickness of the second limiting part.

10. A cooking utensil, characterized in that, Includes the cover according to any one of claims 1 to 9.

11. The cooking utensil according to claim 10, characterized in that, The cooking appliance also includes a steam valve, and the second rib is formed on the steam valve.

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