Inner cover assembly with good sealing performance, upper cover structure of electric rice cooker and electric rice cooker

Abstract

The utility model relates to the kitchen small household electrical appliances field field, and its specific disclosure is a kind of inner cover assembly, electric rice cooker upper cover structure and electric rice cooker with good sealing performance, wherein inner cover assembly includes cover plate and the sealing ring for sealing the pot mouth of electric rice cooker inner pot, sealing ring is fixed on the circumferential side edge of cover plate;Sealing ring has installation surface with the circumferential side edge sealing lamination of cover plate on inner side, installation surface is provided with the sealing ring that is in abutment with the circumferential edge of cover plate, through the double sealing design of "inner installation surface+sealing ring", form "installation surface foundation lamination+sealing ring local reinforcement" composite sealing structure, to strengthen sealing performance.The full circumferential sealing lamination of installation surface and the circumferential side edge of cover plate provides basic sealing barrier;Sealing ring as independent annular sealing unit, its radial section can be designed as the shape of more optimal elasticity, and the rebound force generated by radial compression further enhances the lamination tightness with cover plate.

Description

Technical Field

[0001] This utility model relates to the field of small kitchen appliances, and in particular to an inner cover assembly with good sealing performance, a rice cooker lid structure, and a rice cooker. Background Technology

[0002] As one of the most commonly used cooking appliances in family kitchens, the core function of a rice cooker is to quickly cook and keep rice warm through high-temperature steaming. In this process, the sealing performance of the inner lid assembly directly determines the cooking effect and safety. If the seal between the inner lid and the inner pot fails, steam leakage will lead to insufficient pressure inside the pot, prolonged cooking time, and loss of nutrients in the food. In severe cases, it may even cause burns or damage to surrounding electrical components due to steam overflow. Therefore, improving the sealing reliability of the inner lid assembly has always been a key direction for rice cooker technology improvement.

[0003] However, existing rice cooker inner lid assemblies still have significant shortcomings in terms of sealing performance and long-term reliability.

[0004] Traditional rice cookers typically use a single sealing ring that fits snugly against the edge of the lid (such as a flat seal or a simple bevel seal). The core problem with this structure is the limited sealing contact area, and the adhesion between the sealing ring and the lid relies on the material's elasticity. Under high-temperature cooking conditions (such as continuous heating above 100°C or high-pressure cooking), the plastic sealing ring is prone to hardening, shrinkage, or peeling off from the lid due to thermal aging, molecular chain breakage, or long-term pressure deformation. For example, when tiny gaps appear at the contact interface between the sealing ring and the lid due to aging, steam leaks along these gaps, causing a sharp decline in sealing performance. Experimental data shows that after 500 high-temperature cooking cycles (simulating 2-3 years of daily use), the leakage rate of a traditional single-sealing-ring structure can be more than three times that of its initial state, severely impacting cooking results.

[0005] Therefore, developing a rice cooker inner lid assembly with good sealing performance is of great significance for improving the overall performance of rice cookers and the user experience. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defects of poor sealing performance and poor long-term reliability of the inner lid assembly of the rice cooker in the prior art, and to provide an inner lid assembly with good sealing performance, a rice cooker top cover structure and a rice cooker, in order to improve the sealing reliability of the inner lid assembly and extend its service life.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A sealing inner cover assembly includes a cover plate and a sealing ring for sealing the opening of the inner pot of a rice cooker, the sealing ring being fixed to the peripheral edge of the cover plate.

[0009] The sealing ring has an inner mounting surface that seals against the circumferential edge of the cover plate, and the mounting surface is provided with a sealing ring that abuts against the circumferential edge of the cover plate to enhance the sealing performance.

[0010] Furthermore, the mounting surface is provided with at least two sealing rings spaced apart in the vertical direction to further improve the sealing effect.

[0011] Furthermore, the sealing ring includes an mounting portion and a sealing portion connected to the lower end of the mounting portion. The mounting portion is fixed on the peripheral edge of the inner cover, and the inner side of the mounting portion is configured as the mounting surface. The sealing portion is used to seal the inner pot of the rice cooker.

[0012] Furthermore, it also includes a pressure ring surrounding the outside of the mounting portion, the mounting portion being fixed to the peripheral edge of the inner cover by the pressure ring to enhance the stability of the sealing ring.

[0013] Furthermore, the lower end of the mounting surface is provided with a deformable support ring that fits against the junction of the peripheral edge and the bottom of the inner cover. The support ring is normally curved upwards and deforms downwards in the installed state to fit against the junction of the peripheral edge and the bottom of the inner cover, thereby dispersing stress and reducing deformation of the sealing ring due to long-term pressure.

[0014] Furthermore, the upper end of the mounting part is folded outward to form a fixing groove with the opening facing downward. The pressure ring is provided with a fixing protrusion, which is inserted into the fixing groove to fix the sealing ring and ensure that the sealing ring will not loosen or fall off during use.

[0015] Furthermore, the sealing part includes an inclined connecting section and a sealing section. The upper end of the connecting section is connected to the lower end of the mounting part, and the lower end is inclined outward and connected to the upper end of the sealing section. The lower end of the sealing section is inclined inward, and a V-shaped annular groove is formed between the connected connecting section and the sealing section. The sealing section is used to seal the opening of the inner pot of the rice cooker. This structural design optimizes the force distribution of the sealing ring, enabling it to better maintain its shape and sealing performance under high temperature and high pressure environments.

[0016] Furthermore, the lower end of the sealing section is provided with an upward-facing protrusion to form a water storage tank. Since the outer ring of the sealing ring is in direct contact with the air outside the pot, condensation typically accumulates on the surface of the sealing ring inside the pot after cooking. When the lid is opened, the condensation flows along the inner lid surface onto the table. The water storage tank temporarily stores the condensation; when the lid is opened, the condensation flows into the storage tank, and the user can simply move the lid over the sink to pour the water into the sink, preventing direct spillage onto the table.

[0017] In addition, this utility model also provides a rice cooker lid structure, including a lid body and an inner lid assembly as described in any of the above claims, wherein the inner lid assembly is connected to the lower side of the lid body.

[0018] This utility model also provides a rice cooker, including a cooker body and a rice cooker lid structure as described above, wherein one end of the rice cooker lid structure is hinged to the cooker body.

[0019] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects:

[0020] This invention employs a dual-seal design of "inner mounting surface + sealing ring" to form a composite sealing structure of "basic fit of the mounting surface + local reinforcement of the sealing ring." On one hand, the full circumferential sealing fit between the mounting surface and the periphery of the cover plate provides a basic sealing barrier; on the other hand, the sealing ring, as an independent annular sealing unit, can be designed with a more elastic shape (such as an O-shape or C-shape) in its radial cross-section, further enhancing the tightness of the fit with the cover plate through the rebound force generated by radial compression. This superimposed effect of "main seal + auxiliary seal" effectively reduces the probability of gaps appearing at a single sealing interface due to aging, significantly improving the sealing reliability during long-term use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0022] Figure 1 This is a cross-sectional view of the rice cooker lid structure in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the sealing ring in an embodiment of the present invention.

[0024] Figure label:

[0025] 100. Top cover structure; 110. Cover body; 120. Inner cover assembly; 121. Cover plate; 122. Sealing ring; 1221. Mounting part; 12211. Mounting surface; 12212. Sealing ring; 12213. Support ring; 12214. Fixing groove; 1222. Sealing part; 12221. Connecting section; 12222. Sealing section; 12223. Protrusion; 12224. Water storage tank; 123. Pressure ring; 1231. Fixing protrusion. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. 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, and therefore should not be construed as a limitation of this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0031] Example 1:

[0032] The inner cover assembly with good sealing performance in this embodiment mainly consists of a cover plate 121 and a sealing ring 122, such as... Figure 1 As shown, the cover plate 121 serves as the basic supporting component of the inner cover assembly 120. Its shape is adapted to the shape of the opening of the inner pot of the rice cooker, and it is usually a regular shape such as round or elliptical. It is used to install and fix the sealing ring 122 and to connect with the cover body 110 of the rice cooker upper cover structure 100. The sealing ring 122 plays a key sealing role in this utility model, and the sealing ring 122 is fixed on the peripheral edge of the cover plate 121.

[0033] In this embodiment, the sealing ring 122 has a mounting surface 12211 on its inner side that seals against the peripheral edge of the cover plate 121. The mounting surface 12211 is provided with a sealing ring 12212 that abuts against the peripheral edge of the cover plate 121. Through the dual sealing design of "inner mounting surface + sealing ring", a composite sealing structure of "basic mounting surface fit + local reinforcement of sealing ring" is formed to improve the sealing performance.

[0034] In one specific embodiment, the sealing ring 122 includes a mounting portion 1221 and a sealing portion 1222. The mounting portion 1221 is located on the upper part of the sealing ring 122, and its inner side is formed as a mounting surface 12211 that seals against the peripheral edge of the cover plate 121. In the actual assembly process, the mounting portion 1221 of the sealing ring 122 is placed on the peripheral edge of the cover plate 121, so that the mounting surface 12211 is tightly fitted with the cover plate 121.

[0035] In this embodiment, the mounting surface 12211 is equipped with two sealing rings 12212 spaced apart in the vertical direction. Each sealing ring 12212 is made of highly elastic silicone material, and its radial cross-section can be O-shaped. During installation, by applying a certain pressure, the sealing rings 12212 undergo radial compression deformation, generating a rebound force that tightly presses against the circumferential edge of the cover plate 121, thus forming two lines of sealing. This double-sealing-ring 12212 design, compared to a traditional single sealing ring, significantly increases the sealing contact area and effectively reduces the possibility of steam leakage.

[0036] In this embodiment, a pressure ring 123 is used to securely connect the sealing ring 122 to the cover plate 121. A pressure ring 123 is provided around the outer side of the mounting portion 1221. The pressure ring 123 is made of a plastic material with moderate hardness, possessing a certain degree of rigidity and toughness. Specifically, the upper end of the mounting portion 1221 is folded outward to form a downward-opening fixing groove 12214, and a corresponding fixing protrusion 1231 is provided on the pressure ring 123. During assembly, the pressure ring 123 is fitted onto the outer side of the mounting portion 1221, allowing the fixing protrusion 1231 to accurately insert into the fixing groove 12214. Through this snap-fit ​​connection method, the sealing ring 122 is firmly fixed to the cover plate 121.

[0037] Furthermore, a deformable support ring 12213 is provided at the lower end of the mounting surface 12211 of the mounting part 1221. The deformable support ring 12213 is made of rubber with good elastic memory function. In the uninstalled state, the deformable support ring 12213 is tilted upwards; when the sealing ring 122 is installed on the cover plate 121, the deformable support ring 12213 is compressed, deforms downwards, and fits tightly against the peripheral edge and bottom edge of the inner cover. The deformable support ring 12213 can disperse the stress on the sealing ring 122 during installation and use, avoid excessive local pressure on the sealing ring 122 which would accelerate aging or damage, and further enhance the stability and reliability of the connection between the sealing ring 122 and the cover plate 121.

[0038] In this embodiment, the sealing part 1222 is connected to the lower end of the mounting part 1221 and is used to seal the inner pot of the rice cooker. The sealing part 1222 includes an inclined connecting section 12221 and a sealing section 12222. The upper end of the connecting section 12221 is connected to the lower end of the mounting part 1221, and its lower end is inclined outward and connected to the upper end of the sealing section 12222. The lower end of the sealing section 12222 is inclined inward, and a V-shaped annular groove is formed between the connecting section 12221 and the sealing section 12222. During the process of closing the lid, the sealing section 12222 is in close contact with the opening of the inner pot of the rice cooker. As the lid is gradually closed, the steam pressure inside the pot gradually increases, and the steam pressure further compacts the sealing section 12222, making the sealing section 12222 fit more tightly with the opening of the inner pot, thereby forming a reliable steam barrier. Meanwhile, the lower end of the sealing section 12222 is provided with an upward-facing protrusion 12223, and a water storage tank 12224 is formed between the protrusion 12223 and the sealing section 12222. During the cooking process of the rice cooker, since the outer ring of the sealing ring 122 is in direct contact with the air outside the cooker, the high-temperature steam inside the cooker will condense into condensate when it encounters the cooler surface of the sealing ring 122. This condensate will flow along the surface of the inner lid, and the water storage tank 12224 can collect this condensate in time, preventing the condensate from flowing directly onto the table. When cleaning is required, the user only needs to move the lid above the sink to pour out the water in the water storage tank 12224.

[0039] Working process and sealing principle:

[0040] When the rice cooker is cooking, the inner lid assembly 120 is first installed on the underside of the lid body 110 of the upper lid structure 100 of the rice cooker, and then the upper lid structure 100 is hinged to the rice cooker body to close. During the closing process, the sealing section 12222 of the sealing ring 122 gradually contacts and adheres to the opening of the inner pot of the rice cooker. As the lid is further closed, the space inside the pot gradually closes, steam begins to accumulate inside the pot, and the pressure inside the pot gradually increases. At this time, the sealing ring 12212 on the mounting surface 12211, under the combined action of its own elasticity and steam pressure, is tightly pressed against the circumferential edge of the cover plate 121, forming the first sealing barrier, effectively preventing steam from leaking from the connection between the sealing ring 122 and the cover plate 121.

[0041] Meanwhile, the V-shaped annular groove structure of the sealing part 1222, under the action of steam pressure, ensures that the sealing section 12222 fits tightly against the inner pot opening, further enhancing the sealing effect. The steam pressure also pushes the sealing section 12222 towards the pot opening, making the contact between the sealing section 12222 and the pot opening even tighter, forming a second line of defense to prevent steam leakage from the contact area between the inner lid assembly 120 and the inner pot opening. Throughout the cooking process, the deformable support ring 12213 maintains its stress-dispersing effect on the sealing ring 122, ensuring that the sealing ring 122 will not be damaged or age prematurely due to localized stress concentration under high temperature and high pressure conditions, thus guaranteeing the long-term stable sealing performance of the sealing ring 122.

[0042] When cooking is finished and the rice cooker lid is opened, the condensate collected in the water storage tank 12224 will not flow directly onto the table. Instead, it will be stored in the water storage tank 12224. Users can easily move the lid over the sink for cleaning, avoiding contamination of the kitchen tabletop with condensate and improving the convenience of use and the cleanliness of the kitchen environment.

[0043] Example 2:

[0044] The rice cooker lid structure 100 in this embodiment includes a lid body 110 and the movable inner lid assembly 120 described in Embodiment 1 above. The lid body 110, serving as the main frame of the lid structure 100, is typically made of high-strength plastic and has an internal mounting structure for installing and fixing the inner lid assembly 120. During actual assembly, the assembled inner lid assembly 120 is fixed to the underside of the lid body 110 using screws or snap-fit ​​connections.

[0045] Specifically, multiple mounting holes are provided on the lower side of the cover 110 corresponding to the position of the inner cover assembly 120, and corresponding mounting holes are also provided on the cover plate 121 of the inner cover assembly 120. By passing screws through the mounting holes on the cover plate 121 and the cover 110 and tightening the nuts, the inner cover assembly 120 can be firmly fixed to the cover 110. Alternatively, a snap-fit ​​structure is provided on the lower side of the cover 110, and the cover plate 121 of the inner cover assembly 120 is provided with a slot that matches the snap-fit ​​structure. By aligning the slot of the inner cover assembly 120 with the snap-fit ​​of the cover 110 and then gently pressing, the snap-fit ​​will engage with the slot, achieving quick installation and fixation of the inner cover assembly 120 to the cover 110. This connection method ensures that the inner cover assembly 120 can be stably installed on the cover 110, and will not loosen or fall off during the use of the rice cooker.

[0046] Overall workflow and function:

[0047] When the rice cooker is cooking, the user first puts the ingredients and water into the inner pot, and then closes the lid 110 of the rice cooker lid structure 100 with the pot body through the hinge. During the closing process of the lid 110, the sealing ring 122 of the inner lid assembly 120 fits tightly against the opening of the inner pot of the rice cooker, forming a sealed space. As the rice cooker starts to heat up, the temperature inside the pot gradually rises, and steam begins to be generated and accumulate inside the pot. At this time, the double sealing structure and V-shaped annular groove sealing structure of the inner lid assembly 120 begin to function, effectively preventing steam leakage and ensuring stable pressure inside the pot, thereby achieving rapid cooking and heat preservation of the rice.

[0048] During cooking, the lid 110 not only provides mounting support for the inner lid assembly 120, but also protects the internal electrical components and provides heat insulation. An insulation layer can be installed inside the lid 110 to reduce heat loss and improve the rice cooker's heat retention. Simultaneously, the lid 110 can also house a control panel, display screen, and other components for user convenience in operating and monitoring the cooking status. After cooking, when the user opens the lid 110, the water reservoir 12224 of the inner lid assembly 120 effectively collects condensate, preventing overflow and enhancing ease of use.

[0049] Example 3:

[0050] The rice cooker in this embodiment includes a cooker body and the rice cooker lid structure 100 described in Embodiment 2 above. The cooker body, as the main component of the rice cooker, contains key components such as a heating plate and an inner pot. The heating plate typically uses resistance wire heating or electromagnetic heating to provide heating energy to the rice cooker. The inner pot is used to hold food and water, and its material is usually stainless steel or aluminum alloy, which has good thermal conductivity and corrosion resistance.

[0051] One end of the rice cooker lid structure 100 is hinged to the cooker body via a hinge shaft. The hinge shaft is made of metal, possessing high strength and wear resistance, ensuring that the rice cooker lid structure 100 will not be damaged during frequent opening and closing. A sealing ring can also be provided at the hinge point to further prevent steam leakage. Meanwhile, the cooker body also includes components such as a power interface and a control circuit board. The power interface is used to connect to an external power source to provide power to the rice cooker; the control circuit board is used to control the heating process, the heat preservation process, and the implementation of various functions of the rice cooker.

[0052] Working principle and usage effect:

[0053] When using the rice cooker, first place it on a stable surface, then plug the power cord into the power outlet to turn it on. Next, add the ingredients and water to the inner pot in the appropriate ratio, and then place the inner pot inside the main cooker. Then, rotate the rice cooker lid structure 100 around the hinge axis to close it to the main cooker. At this point, the sealing ring 122 of the inner lid assembly 120 fits tightly against the rim of the inner pot, forming a sealed space.

[0054] The user selects the appropriate cooking function and time via the control panel on the rice cooker's lid structure 100. Upon receiving the user's command, the control circuit board activates the heating plate to begin heating. As heating progresses, the temperature inside the pot gradually rises, and steam begins to be generated and accumulates inside. Due to the excellent sealing performance of the inner lid assembly 120, steam does not leak, and the pressure inside the pot gradually increases, accelerating the cooking process of the rice. During cooking, the control circuit board automatically adjusts the power of the heating plate based on the preset program and temperature information from the temperature sensor, ensuring that the rice is heated evenly and achieves optimal cooking results.

[0055] Once cooking is complete, the rice cooker enters the keep-warm mode, where the control circuit board reduces the power of the heating plate to maintain the internal temperature within a suitable range. At this time, the user can open the rice cooker's top lid 100. The water reservoir 12224 in the inner lid assembly 120 effectively collects condensation generated during cooking, preventing it from overflowing onto the countertop and keeping the kitchen clean. Simultaneously, the good sealing performance of the inner lid assembly 120 effectively reduces heat loss, extending the rice's warming time and improving the user experience.

[0056] In summary, this utility model has demonstrated in detail the inner lid assembly with good sealing performance, the rice cooker lid structure, and the specific implementation method of the rice cooker through multiple embodiments. It has comprehensively described the component structure, assembly process, working principle and usage effect, fully demonstrating the advantages and innovations of this utility model in terms of sealing performance, service life and ease of use.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sealing inner cover assembly with good sealing performance, comprising a cover plate and a sealing ring for sealing the opening of the inner pot of a rice cooker, the sealing ring being fixed to the peripheral edge of the cover plate; characterized in that: The sealing ring has an inner mounting surface that seals against the circumferential edge of the cover plate, and the mounting surface is provided with a sealing ring that abuts against the circumferential edge of the cover plate to enhance the sealing performance.

2. The inner cover assembly according to claim 1, characterized in that: The mounting surface is provided with at least two sealing rings arranged at intervals in the vertical direction.

3. The inner cover assembly according to claim 1, characterized in that, The sealing ring includes a mounting part and a sealing part connected to the lower end of the mounting part. The mounting part is fixed on the peripheral edge of the inner cover, and the inner side of the mounting part is configured as the mounting surface. The sealing part is used to seal the inner pot of the rice cooker.

4. The inner cover assembly according to claim 3, characterized in that, It also includes a pressure ring surrounding the outside of the mounting portion, the mounting portion being fixed to the peripheral edge of the inner cover by the pressure ring.

5. The inner cover assembly according to claim 3, characterized in that, The lower end of the mounting surface is provided with a deformable support ring that fits into the junction of the peripheral edge and the bottom side of the inner cover.

6. The inner cover assembly according to claim 4, characterized in that, The upper end of the mounting part is folded outward to form a fixing groove with the opening facing downward. The pressure ring is provided with a fixing protrusion, which is inserted into the fixing groove to fix the sealing ring.

7. The inner cover assembly according to claim 3, characterized in that: The sealing part includes an inclined connecting section and a sealing section. The upper end of the connecting section is connected to the lower end of the mounting part, and the lower end is inclined outward and connected to the upper end of the sealing section. The lower end of the sealing section is inclined inward. A V-shaped annular groove is formed between the connected connecting section and the sealing section. The sealing section is used to seal the opening of the inner pot of the rice cooker.

8. The inner cover assembly according to claim 7, characterized in that: The lower end of the sealing section is provided with an upward protrusion to form a water storage tank.

9. A rice cooker lid structure, characterized in that: It includes a cover body and an inner cover assembly as described in any one of claims 1 to 8, wherein the inner cover plate assembly is connected to the underside of the cover body.

10. An electric rice cooker, characterized in that: It includes a rice cooker body and a rice cooker lid structure as described in claim 9, wherein one end of the rice cooker lid structure is hinged to the rice cooker body.

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