Cover body structure and household appliance

By hiding the rice cooker articulated shaft in the mounting hole and using closures and insulating parts, the risk of electric shock caused by the electric articulated shaft is solved, and the safety and structural strength of the rice cooker is improved.

CN223158243UActive Publication Date: 2025-07-29ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Patent Information

Application Number
CN202422311859.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2025-07-29
Estimated Expiration
2034-09-23

AI Technical Summary

Technical Problem

In existing rice cookers, the articulated shaft is energized due to broken electrical conductors, and users are prone to electric shock when touching the articulated shaft, which affects safety.

Method used

A cover structure is designed to hide both ends of the hinge shaft in the mounting holes, and seal them with a closure to avoid exposure of the hinge shaft, and to install an insulating member to prevent current transmission and enhance structural strength.

Benefits of technology

Effectively reduce the probability of user electric shock, improve the safety of the cover structure, prevent the hinged shaft from touching when it is energized, and enhance structural stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a cover body structure and a household appliance, and the cover body structure comprises a supporting part which is provided with two supporting parts which are arranged at an interval in the first direction, and each supporting part is provided with a supporting hole in a penetrating manner in the first direction; the cover body is provided with two mounting parts which are arranged in a spaced mode in the first direction, the two mounting parts are arranged on the side, away from the other supporting part, of each supporting part respectively, a mounting hole is formed in the side, facing the supporting part, of each mounting part, and the two ends, in the first direction, of the hinge shaft penetrate through the two supporting holes respectively and are located in the two mounting holes. In addition, if the cover body structure is exposed outside due to the fact that the covering part covering the cover body is damaged, the two ends of the hinge shaft are located in the supporting holes, and a user cannot touch the hinge shaft in the process of using the cover body structure. Even if the hinge shaft is electrified due to various reasons such as electric lead damage, the probability of electric shock of a user is reduced and the use safety of the cover body structure is improved because the user cannot touch the hinge shaft.
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Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly to a lid structure and a household appliance. Background Art

[0002] At present, rice cookers on the market generally include a cooker body and a cooker lid. The cooker lid and the cooker body are hinged through a hinge shaft. The hinge shaft passes through several torsion springs, and both ends of the hinge shaft are stuck in the card slots of the cooker body. The extending ends of both ends of several torsion springs are respectively stuck on the cooker body and the wall of the cooker lid. When in use, press the open lid button of the rice cooker, and the cooker lid will bounce open under the action of the torsion springs, which is very convenient.

[0003] Among them, the operation buttons of the rice cooker are usually arranged on the cooker lid. The operation buttons are connected to the cooker body through electric wires. Users can operate the cooker body to cook rice and other operations through the operation buttons on the cooker lid. After long-term use, the surface insulating skin of the electric wires will be damaged. And when the electric wires go from the cooker lid to the cooker body, they will pass through the middle of the hinge shaft. The damaged insulating skin of the electric wires contacting the hinge shaft will cause the hinge shaft to be electrified. Therefore, the hinge shaft is actually a potential live part.

[0004] The cooker lid is usually provided with a notch for avoiding the hinge shaft and the torsion springs near the hinge shaft. The structural strength of the areas on both sides of the notch of the cooker lid is relatively weak and is easy to crack after being knocked. After the cooker lid cracks, the hinge shaft will be exposed outside, resulting in the situation that the user's hand touches the hinge shaft during the use of the rice cooker. Since the hinge shaft is a potential live part, once the user's hand touches the electrified hinge shaft, it will cause the user to get an electric shock and affect the safety of the user. Summary of the Utility Model

[0005] Based on this, in view of the problem that the user's hand touches the hinge shaft during the use of the rice cooker, resulting in electric shock, it is necessary to provide a lid structure and a household appliance.

[0006] A lid structure, comprising:

[0007] A support member having two support portions spaced along a first direction, and a support hole is penetrated along the first direction on each of the support portions;

[0008] A lid having two mounting portions spaced along the first direction, the two mounting portions are respectively arranged on one side of each support portion away from the other support portion, and a mounting hole is opened on one side of each mounting portion facing the support portion;

[0009] A hinge shaft, the two ends of which in the first direction respectively pass through the two support holes and are hidden in the two mounting holes, and the lid is rotatably mounted on the support member through the hinge shaft.

[0010] In one embodiment, one end of the mounting hole remote from the supporting portion is closed.

[0011] In one embodiment, one of the mounting holes is a blind hole and the other is a through hole.

[0012] The cover structure further includes a closing member, and the closing member is detachably closed at one end of the through hole remote from the supporting portion.

[0013] In one embodiment, each of the mounting holes is a through hole, and the cover structure includes two closing members, and the two closing members are respectively detachably closed at one ends of the mounting holes remote from the supporting portion.

[0014] In one embodiment, the closing member is disposed in the mounting hole and is in interference fit with the mounting hole.

[0015] In one embodiment, the closing member includes a closing portion and a clamping portion. The closing portion is disposed in the mounting hole and is in interference fit with the mounting hole. The clamping portion is located at one end of the closing portion remote from the mounting hole and is outside the mounting hole.

[0016] In one embodiment, the cross-sectional area of the clamping portion is greater than the cross-sectional area of the mounting hole, and the cross-section is perpendicular to the axial direction of the mounting hole.

[0017] In one embodiment, in the axial direction of the mounting hole, the clamping portion and the mounting portion are spaced apart.

[0018] In one embodiment, the cover structure further includes a torsion spring. The torsion spring is sleeved on the hinge shaft. The torsion spring has an elastic end and a fixed end that extend out. The elastic end abuts against the cover, and the fixed end abuts against the support member. During the process of the cover rotating relative to the support member, the torsion spring can be deformed.

[0019] In one embodiment, the cover structure further includes an insulating member, and the insulating member is disposed between the hinge shaft and the torsion spring.

[0020] A household appliance, characterized in that it includes the household appliance according to any one of the above.

[0021] In one embodiment, the household appliance is a rice cooker.

[0022] In one embodiment, the household appliance further includes a pot body, and the support member is disposed on the pot body.

[0023] In one embodiment, the household appliance further includes a covering member, and the covering member is disposed on the cover.

[0024] In the above cover structure, by hiding both ends of the two hinge shafts in the two mounting holes, the two ends of the hinge shafts will not protrude from the support holes. If the cover covering the support member is damaged, resulting in the exposure of the cover structure, since the two ends of the hinge shafts are located in the support holes, users will not touch the hinge shafts during the use of the cover structure. Even if the hinge shafts are electrified due to various reasons such as damaged conductive wires, since users cannot touch the hinge shafts, the probability of electric shock to users is reduced, and the safety of using the cover structure is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a household appliance in some embodiments of the present application.

[0026] Figure 2 is Figure 1 A schematic internal structure diagram of the household appliance in the embodiment.

[0027] Figure 3 It is a partial structural schematic diagram of the support member in some embodiments of the present application.

[0028] Figure 4 It is a partial structural schematic diagram of the cover in some embodiments of the present application.

[0029] Figure 5 It is a schematic structural diagram of the cover structure from one perspective in some embodiments of the present application.

[0030] Figure 6 It is a schematic structural diagram of the cover structure from another perspective in some embodiments of the present application.

[0031] Figure 7 It is a schematic cross-sectional diagram of the cover structure in some embodiments of the present application.

[0032] Figure 8 is Figure 7 A schematic structural diagram of the closure member of the cover structure in the embodiment.

[0033] Figure 9 It is a schematic cross-sectional diagram of the cover structure in some other embodiments of the present application.

[0034] Figure 10 is Figure 9 An enlarged view at B.

[0035] Figure 11 is Figure 9 A schematic structural diagram of the closure member of the cover structure in the embodiment.

[0036] Figure 12 It is a schematic cross-sectional diagram of the cover structure in still some other embodiments of the present application.

[0037] Description of reference numerals:

[0038] Support member 10; support portion 11; support hole 12;

[0039] Cover 20; mounting portion 21; mounting hole 22; blind hole 23; through hole 24;

[0040] Hinge shaft 30; torsion spring 31; insulating member 33;

[0041] Closing member 40; Closing portion 41; Clamping portion 42;

[0042] Pot body 50; Covering member 51;

[0043] First direction X; DETAILED DESCRIPTION

[0044] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0046] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In this application, unless otherwise clearly defined or limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In this application, unless otherwise clearly defined or limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0050] Referring to Figure 1 , Figure 1 shows a schematic structural diagram of a household appliance in an embodiment of the present application, Figure 2 shows a schematic internal structural diagram of a household appliance in some embodiments of the present application. The household appliance provided by an embodiment of the present application includes a cover structure. The cover structure includes a support member 10, a cover body 20 and a hinge shaft 30. The cover body 20 is rotatably installed on the support member 10 through the hinge shaft 30. The cover body 20 can rotate relative to the support member 10, and the cover body 20 can open and close the support member 10 during the rotation process, so as to realize the function of opening the cover of the household appliance.

[0051] Specifically, referring to Figure 3 , Figure 4 and Figure 5, the support member 10 has two support portions 11 spaced along the first direction X. Each support portion 11 is provided with a support hole 12 penetrating therethrough along the first direction X. The cover body 20 has two mounting portions 21 spaced along the first direction X. The two mounting portions 21 are respectively disposed on one side of each support portion 11 away from the other support portion 11, and an installation hole 22 is formed on the side of each mounting portion 21 facing the support portion 11. The two ends of the hinge shaft 30 in the first direction X respectively pass through the two support holes 12 and are located within the support holes 12. The first direction X is the axial direction of the hinge shaft 30.

[0052] In some embodiments, referring to Figure 1 and Figure 2 , the household appliance further includes a pot body 50 and a covering member 51. The support member 10 is disposed on the pot body 50, so as to realize the opening and closing of the pot body 50 through the cover body structure, while the covering member 51 is disposed on the cover body 20, so as to shield the structure on the surface of the cover body 20, and at the same time can also play a role in protecting the components on the cover body 20.

[0053] Among them, the covering member 51 is provided with a notch for avoiding the hinge shaft 30. At the two positions on both sides of the notch, that is, Figure 2 at the position A in, is similar to a cantilever structure with relatively weak structural strength, and is easily broken due to knocks or other reasons, resulting in damage to the covering member 51, exposing the structure inside the covering member 51, and further there is a risk that the user touches the hinge shaft and gets an electric shock.

[0054] By hiding the two ends of the two hinge shafts 30 in the two installation holes 22, the two ends of the hinge shaft 30 will not protrude from the support holes 12. If the covering member 51 is damaged and the cover body structure is exposed, since the two ends of the hinge shaft 30 are located within the support holes 12, the user will not touch the hinge shaft 30 during the use of the cover body structure. Even if the hinge shaft 30 is electrified due to various reasons such as damaged conductive wires, since the user cannot touch the hinge shaft 30, the probability of the user getting an electric shock is reduced, and the safety of using the cover body structure is improved.

[0055] Optionally, the household appliance is a rice cooker, and the opening and closing of the rice cooker can be realized by the rotation of the cover body 20 relative to the support member 10. In some other embodiments, the above cover body structure can also be an air fryer, a steamer, a pressure cooker and other household appliances that require an opening operation.

[0056] In some embodiments of the present application, referring to Figure 5 , Figure 6 and Figure 7. One end of the mounting hole 22 away from the support portion 11 is closed. This not only further prevents the user from touching the hinge shaft 30, but also plays a role in limiting the hinge shaft 30, preventing the limiting shaft from disengaging from the mounting hole 22 under the action of external shaking, which affects the rotation of the cover body 20 relative to the support member 10.

[0057] In some embodiments, in order to facilitate the installation of the hinge shaft 30, one of the mounting holes 22 is a blind hole 23, and the other mounting hole 22 is a through hole 24. A blind hole 23 refers to a hole that only enters from the side of the mounting portion 21 facing the support portion 11 but does not penetrate the entire mounting portion 21, while a through hole 24 refers to a hole that enters from the side of the mounting portion 21 facing the support portion 11, passes through the entire mounting portion 21, and finally exits from the other side of the mounting portion 21. Thus, when installing the hinge shaft 30, one end of the hinge shaft 30 can penetrate into the mounting hole 22 that is the through hole 24, then sequentially pass through the two support holes 12, and finally one end of the hinge shaft 30 extends into the mounting hole 22 that is the blind hole 23, and the other end is located in the mounting hole 22 that is the through hole 24, completing the installation of the hinge shaft 30.

[0058] Among them, since one end of the mounting hole 22 that is the blind hole 23 away from the support portion 11 does not penetrate the entire mounting portion 21, one end of the mounting hole 22 that is the blind hole 23 away from the support portion 11 is directly in a closed state. And one end of the mounting hole 22 that is the through hole 24 away from the support portion 11 needs to be used for the installation of the hinge shaft 30. After the hinge shaft 30 is installed, one end of the through hole 24 away from the support portion 11 remains in an open state, posing a risk of the user touching the hinge shaft 30 and the hinge shaft 30 disengaging.

[0059] Therefore, the cover body structure further includes a closing member 40. The closing member 40 is detachably closed at one end of the through hole 24 away from the support portion 11, thereby closing one end of the mounting hole 22 that is the through hole 24 away from the support portion 11, preventing the user from touching the hinge shaft 30 and the hinge shaft 30 from disengaging.

[0060] And in some other embodiments, referring to Figure 11 , each mounting hole 22 is a through hole 24, so that when installing the hinge shaft 30, it can be selected to penetrate into any mounting hole 22, facilitating the installation of the hinge shaft 30. And in order to close one end of the two mounting holes 22 away from the support portion 11, the cover body structure includes two closing members 40. The two closing members 40 are respectively detachably closed at one end of the mounting hole 22 away from the support portion 11, thereby closing the two mounting holes 22.

[0061] Specifically in some embodiments, referring to Figure 7 and Figure 8, the closure member 40 is disposed in the mounting hole 22 and is in interference fit with the mounting hole 22, thereby preventing the closure member 40 from falling off the mounting hole 22 by itself and ensuring the sealing effect of the closure member 40 on the mounting hole 22. Specifically, the closure member 40 can be an elastic rubber plug, and the diameter of the rubber plug is larger than the diameter of the mounting hole 22. After the rubber plug is inserted into the mounting hole 22, the rubber plug will be fixed in the mounting hole 22 to complete the sealing of the mounting hole 22. Optionally, the diameter of the rubber plug is 0.1 mm - 0.2 mm larger than the diameter of the mounting hole 22.

[0062] In some other embodiments, refer to Figure 9 , Figure 10 and Figure 11 , the closure member 40 includes a closing portion 41 and a clamping portion 42. The closing portion 41 is disposed in the mounting hole 22 and is in interference fit with the mounting hole 22, so as to seal the mounting hole 22 through the closing portion 41 and fix the closure member 40 to prevent the closure member 40 from falling off the mounting hole 22.

[0063] The clamping portion 42 is located at one end of the closing portion 41 away from the mounting hole 22 and is located outside the mounting hole 22. That is, a part of the closure member 40 is disposed in the mounting hole 22, and another part of the closure member 40 is located outside the mounting hole 22. In this way, after the closing portion 41 of the closure member 40 is inserted into the mounting hole 22, tools such as tweezers can be used to remove the closure member 40 from the mounting hole 22 by clamping the clamping portion 42 located outside the mounting hole 22, so that the hinge shaft 30 can be disassembled and repaired.

[0064] Specifically, in order to prevent the clamping portion 42 of the closure member 40 from also entering the mounting hole 22, the cross-sectional area of the clamping portion 42 is larger than the cross-sectional area of the mounting hole 22, and the cross-section is perpendicular to the axial direction of the mounting hole 22, so that only the closing portion 41 of the closure member 40 can enter the mounting hole 22, and the clamping portion 42 remains outside the mounting hole 22 for facilitating the removal of the closure member 40 from the mounting hole 22.

[0065] Further, in order to facilitate the tweezers to clamp the clamping portion 42, in the axial direction of the mounting hole 22, the clamping portion 42 and the mounting portion 21 are spaced apart, so that the tweezers can extend into the gap between the clamping portion 42 and the mounting portion 21 to clamp the clamping portion 42. Optionally, the length of the gap between the clamping portion 42 and the mounting portion 21 is greater than 0.5 mm.

[0066] Specifically in one embodiment, refer to Figure 9, one of the mounting holes 22 is a through hole 24 and the other is a blind hole 23. The distance from the bottom wall of the blind hole 23 to the end of the through hole 24 away from the blind hole 23 is A, the length of the hinge shaft 30 is B, and in the length direction of the hinge shaft 30, the length of the closure 40 is C, satisfying B + C - A > 0.5 mm, that is, the length of the gap between the clamping portion 42 and the mounting portion 21 is greater than 0.5 mm. When it is necessary to disassemble the hinge for product maintenance, hold the clamping portion 42 with tweezers, remove the closure 40 from the mounting hole 22, then hold the middle of the hinge shaft 30 and push the hinge shaft 30 towards the side of the through hole 24, and the hinge shaft 30 can be disassembled to repair the cover structure.

[0067] In some embodiments of the present application, in order to achieve the automatic opening of the cover 20, the cover structure further includes a torsion spring 31. The torsion spring 31 is sleeved on the hinge shaft 30, and the torsion spring 31 has a protruding elastic end and a fixed end. The elastic end is connected to the cover 20, and the fixed end abuts against the support member 10. During the rotation of the cover 20 relative to the support member 10, the torsion spring 31 can be deformed, so as to drive the support member 20 through the torsion spring 31 to realize the automatic opening of the cover 20.

[0068] Specifically, when the cooking pot cover is being closed and the cover 20 rotates relative to the support member 10, the cover 20 will drive the elastic end to rotate relative to the fixed end, so that the torsion spring 31 is deformed and stores elastic force. When the opening button of the cooking pot cover 20 on the rice cooker is pressed, the connection between the cover 20 and the support member 10 is disconnected. Under the action of the elastic force of the torsion spring 31, the support member 10 drives the cooking pot cover to open relative to the cooking pot body, completing the automatic opening of the cooking pot cover.

[0069] In some embodiments, the cover structure further includes an insulating member 32. The insulating member 32 is disposed between the hinge shaft 30 and the torsion spring 31, so as to prevent the current on the hinge shaft 30 from being transmitted to the torsion spring 31, resulting in the torsion spring 31 being charged, and further reducing the probability of user electric shock. Specifically, since the hinge shaft 30 is a potentially charged component, by providing the insulating member 32 between the hinge shaft 30 and the torsion spring 31, it can be avoided that the torsion spring 31 also becomes a potentially charged component. Even when the covering member 52 on the cover structure is damaged and the torsion spring 31 is exposed to the outside, the user will not get an electric shock when contacting the torsion spring 31.

[0070] Optionally, the insulating member 32 is a plastic bushing. The plastic bushing is sleeved on the hinge shaft 30, and the torsion spring 31 is sleeved on the hinge shaft 30. Further, there are two torsion springs 31, and the two torsion springs 31 are arranged at intervals in the axial direction of the hinge shaft 30.

[0071] The above cover structure has at least the following advantages:

[0072] By arranging both ends of the two hinge shafts 30 within the two mounting holes 22, the two ends of the hinge shafts 30 will not protrude from the support holes 12. If the covering member 51 covering the support member is damaged, resulting in the exposure of the cover structure, since the two ends of the hinge shafts 30 are located within the support holes 12, it is not easy for users to touch the hinge shafts 30. Even if the hinge shafts 30 are electrified due to the damage of the conductive wires, since users cannot touch the hinge shafts 30, the probability of electric shock to users is reduced, improving the safety of the cover structure during use.

[0073] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0074] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A cover structure, characterized in that, The cover structure includes: A support member (10) having two support portions (11) spaced apart in a first direction (X), and a support hole (12) penetrating through each support portion (11) in the first direction (X); A cover body (20) having two mounting portions (21) spaced apart in the first direction (X), the two mounting portions (21) being respectively disposed on one side of each support portion (11) away from the other support portion (11), and a mounting hole (22) being formed on the side of each mounting portion (21) facing the support portion (11); A hinge shaft (30) having two ends in the first direction (X) respectively passing through the two support holes (12) and hidden in the two mounting holes (22), and the cover body (20) being rotatably mounted on the support member (10) through the hinge shaft (30).

2. The cover structure according to claim 1, wherein One end of the mounting hole (22) away from the support portion (11) is closed.

3. The cap structure according to claim 2, characterized in that, One of the mounting holes (22) is a blind hole (23), and the other mounting hole (22) is a through hole (24); The cover structure further includes a closing member (40), and the closing member (40) is detachably closed at one end of the through hole (24) away from the support portion (11).

4. The cover structure according to claim 2, wherein Each mounting hole (22) is a through hole (24), and the cover structure includes two closing members (40), and the two closing members (40) are respectively detachably closed at one end of the mounting hole (22) away from the support portion (11).

5. The cover structure according to claim 3 or 4, characterized in that The closing member (40) is disposed in the mounting hole (22) and is in interference fit with the mounting hole (22).

6. The cover structure according to claim 3 or 4, characterized in that The closing member (40) includes a closing portion (41) and a clamping portion (42), the closing portion (41) is disposed in the mounting hole (22) and is in interference fit with the mounting hole (22), and the clamping portion (42) is located at one end of the closing portion (41) away from the mounting hole (22) and is located outside the mounting hole (22).

7. The cover structure according to claim 6, wherein, The cross-sectional area of the clamping portion (42) is larger than the cross-sectional area of the mounting hole (22), and the cross-section is perpendicular to the axial direction of the mounting hole (22).

8. The cover structure according to claim 7, wherein, In the axial direction of the mounting hole (22), the clamping portion (42) is spaced apart from the mounting portion (21).

9. The cover structure according to claim 1, wherein The cover structure further includes a torsion spring (31), the torsion spring (31) is sleeved on the hinge shaft (30), the torsion spring (31) has an elastic end and a fixed end that extend out, the elastic end abuts against the cover body (20), the fixed end abuts against the support member (10), and the torsion spring (31) can be deformed during the rotation of the cover body (20) relative to the support member (10).

10. The cover structure according to claim 9, characterized in that, The cover structure further includes an insulating member (32), and the insulating member (32) is disposed between the hinge shaft (30) and the torsion spring (31).

11. A household appliance, characterized in that, An appliance including any one of claims 1-10.

12. The household appliance according to claim 11, characterized in that, The appliance is a rice cooker.

13. The household appliance according to claim 12, characterized in that, The appliance further includes a pot body (50), and the support member (10) is disposed on the pot body (50).

14. The household appliance according to claim 12, characterized in that, The household appliance further includes a covering member (51), and the covering member (51) is disposed on the lid body (20).