Upper cover structure and electric cooker

Abstract

The utility model relates to the technical field of electric cookers, in particular to an upper cover structure, which is applied to an electric cooker and comprises an inner cover device, a heating element is arranged on the inner cover device, and a conducting rod is arranged on the heating element. The outer cover device is provided with a connecting seat assembly, and the connecting seat assembly is provided with a conducting strip; the inner cover device is detachably installed on the outer cover device, and when the inner cover device is installed on the outer cover device, the conducting rod and the conducting strip are coupled and conducted. According to the arrangement, the inner cover device and the outer cover device are matched and assembled to form the upper cover structure of the electric cooker, and the heating element is arranged on the upper cover structure, so that when the electric cooker cooks rice, the heating element can be used for quickly heating and increasing the temperature of the inner cover device, and a heating structure at the bottom of the electric cooker is matched to perform double heating on the top and the bottom of the inner container; meanwhile, the heating element is used for heating, so that no condensate water exists on the inner cover device, the phenomenon that the rice drips white is avoided, and the taste of the rice can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electric rice cooker technology, and specifically to a top cover structure and an electric rice cooker. Background Technology

[0002] Currently, most rice cookers on the market heat the bottom of the inner pot using a heating plate at the bottom to achieve the purpose of cooking. However, this method has the disadvantages of low heating efficiency, uneven heating, and unsatisfactory cooking results.

[0003] Utility model patent CN220572020U discloses a rice cooker, including a middle layer for placing the inner pot; a heating plate is provided at the bottom of the middle layer for heating the bottom of the inner pot; a first step is provided at the top of the middle layer, and a heating ring is provided on the first step, which heats the upper part of the inner pot. This prior art improves heating efficiency by providing a heating plate at the bottom of the middle layer and a heating ring at the top of the middle layer, allowing the heating plate and heating ring to heat the bottom and upper parts of the inner pot respectively. However, this prior art still has structural shortcomings; when cooking rice, a large amount of condensation will form on the top lid, causing the rice to drip white, resulting in poor taste.

[0004] Therefore, there is still room for improvement in existing technologies. Utility Model Content

[0005] To address the problem that existing rice cookers often experience excessive condensation on the lid during cooking, resulting in white dripping of rice and a poor texture, this invention provides a lid structure and a rice cooker.

[0006] To achieve the above objectives, the technical solution applied in this utility model is as follows:

[0007] A lid structure for a rice cooker includes an inner lid assembly with a heating element and a conductive rod; and an outer lid assembly with a connecting seat assembly and a conductive plate. The inner lid assembly is detachably mounted on the outer lid assembly. When the inner lid assembly is mounted on the outer lid assembly, the conductive rod and the conductive plate are coupled and connected. This configuration, with the inner and outer lid assemblies forming the lid structure of the rice cooker, and the heating element mounted on the lid structure, allows for rapid heating of the inner lid during rice cooking. This, combined with the heating structure at the bottom of the rice cooker, provides dual heating of the inner pot from both top and bottom, improving heating efficiency. Simultaneously, the heating element prevents condensation on the inner lid assembly, eliminating rice dripping and improving the texture of the rice.

[0008] According to the above scheme, the inner cover device includes an upper inner cover, a lower inner cover, a fixing ring, and a sealing ring. The upper inner cover is fixedly connected to the fixing ring. The heating element and the lower inner cover are clamped between the upper inner cover and the fixing ring, and the heating element is clamped between the upper inner cover and the lower inner cover. The upper end of the sealing ring is clamped between the lower inner cover and the fixing ring. The conductive rod of the heating element passes through the lower inner cover and the fixing ring and is coupled to the conductive plate of the connecting seat assembly for conduction. With this configuration, the inner cover device is composed of an upper inner cover, a heating element, a lower inner cover, a fixing ring, and a sealing ring. The upper inner cover and the fixing ring are fixedly connected, which realizes the clamping and fixing of the heating element, the lower inner cover, and the sealing ring, making assembly convenient.

[0009] According to the above scheme, the lower inner cover is provided with a relief groove corresponding to the conductive rod, and the fixing ring is provided with a through hole corresponding to the conductive rod. A sealing gasket is fixed in the through hole. After passing through the relief groove and the sealing gasket, the conductive rod is coupled and connected to the conductive plate of the connecting seat assembly. With this configuration, the conductive rod of the heating element passes through the lower inner cover and the fixing ring and is led out to be coupled and connected to the conductive plate of the connecting seat assembly. Under the action of the sealing gasket, moisture is prevented from entering and interfering with the heating element.

[0010] According to the above scheme, the fixing ring is provided with a sealing ring mounting groove, the upper end of the sealing ring is provided with an upward flange, and the lower end of the sealing ring is provided with a downward flange. The upward flange passes through the inner hole of the fixing ring and is snapped into the sealing ring mounting groove, and is clamped and fixed by the cooperation of the lower inner cover and the fixing ring. In this way, the sealing ring is fixed by clamping the upward flange of the sealing ring with the cooperation of the lower inner cover and the fixing ring.

[0011] According to the above scheme, the upper inner cover is provided with multiple buckles, and the fixing ring is provided with multiple slots, with the buckles and slots engaging in a locking connection. This design securely connects the upper inner cover and the fixing ring through the buckles and slots, resulting in a simple structure and easy assembly.

[0012] According to the above scheme, the connecting seat assembly includes a connecting seat cover, a spring, a sliding seat, and a connecting seat. The connecting seat cover is fixedly connected to the connecting seat and forms an inner cavity. The sliding seat is slidably located inside the connecting seat. The first end of the spring abuts against the inner wall of the connecting seat, and the second end of the spring abuts against the outer wall of the sliding seat. The first end of the conductive sheet is fixed to the connecting seat, and the second end of the conductive sheet is disposed inside the sliding seat. The conductive rod of the heating element passes through the lower inner cover, the fixing ring, the connecting seat, and the sliding seat in sequence and then connects and conducts electricity with the conductive sheet. In this configuration, the connecting seat assembly is formed by the connecting seat cover, the conductive sheet, the spring, the sliding seat, and the connecting seat working together.

[0013] According to the above scheme, the fixing ring is provided with a latch, the length of the latch protruding relative to the fixing ring is greater than the length of the conductive rod protruding relative to the fixing ring, and the end of the latch is formed with a bevel. The connecting seat is provided with a conductive rod through slot and a latch through slot. The sliding seat is provided with a conductive rod through hole and a latch guide slot. The second end of the conductive sheet is provided with a conductive rod connecting hole. The latch through slot on the connecting seat and the latch guide slot on the sliding seat are correspondingly arranged, and the opening of the latch guide slot is provided with a bevel two that corresponds to the bevel one of the latch. The conductive rod through slot of the connecting seat, the conductive rod through hole on the sliding seat, and the conductive rod connecting hole on the conductive sheet are correspondingly arranged. With this design, when the inner and outer cover devices are not assembled, the sliding seat, under the spring force, misaligns the conductive rod through-hole on the sliding seat with the conductive rod through-groove on the connecting seat and the conductive rod connection hole on the conductive sheet. When the inner and outer cover devices are assembled, the latch on the fixing ring passes through the latch through-groove on the connecting seat and corresponds to the latch guide groove on the sliding seat. The first inclined surface of the latch abuts against the second inclined surface on the opening of the latch guide groove. Under the action of force, the first inclined surface of the latch slides along the second inclined surface, causing the latch to drive the sliding seat to slide and compress the spring. This allows the conductive rod through-hole on the sliding seat to correspond with the conductive rod through-groove on the connecting seat and the conductive rod connection hole on the conductive sheet, facilitating the conductive rod to extend into the conductive rod connection hole on the conductive sheet to form a connection. When the inner cover device is removed, the sliding seat resets, preventing the conductive sheet from being exposed and making it safer to use.

[0014] According to the above scheme, the outer cover device is provided with an installation groove for easy assembly and disassembly of the inner cover device. A retaining rib is provided on the inner wall of the first end of the installation groove, and an inner cover latch is movably mounted on the inner wall of the first end of the installation groove. A retaining plate is provided on the outer wall of the first end of the fixing ring of the inner cover device to engage with the retaining rib, and a retaining block is provided on the outer wall of the second end of the fixing ring of the inner cover device to engage with the inner cover latch. An upper sensor is provided inside the installation groove. When the inner cover device is installed in the installation groove, the inner cover device abuts against the upper sensor. This design allows the inner cover device to be easily assembled onto the outer cover device.

[0015] According to the above scheme, the outer cover device includes a bubble breaker, an outer cover, an inner cover fixing seat, and an venting ring. The first end of the inner cover fixing seat is hinged to the outer cover, and the second end of the inner cover fixing seat is engaged with the outer cover. The venting ring is located between the inner cover fixing seat and the outer cover. The bubble breaker is detachably mounted on the outer cover. The lower inner cover of the inner cover device has a first vent hole, and the upper inner cover of the inner cover device has a second vent hole. The first vent hole, the second vent hole, the venting ring, and the bubble breaker cooperate to form a venting passage. In this configuration, the outer cover device is composed of a bubble breaker, an outer cover, an inner cover fixing seat, and an venting ring.

[0016] The rice cooker of this invention includes a body and the aforementioned upper cover structure. The body has a accommodating cavity containing a detachable inner pot. The body has a heating plate and a lower sensor corresponding to the bottom of the inner pot. When the inner pot is installed in the body, its bottom abuts against the heating plate and lower sensor. The upper cover structure is movably mounted on the body and is used to open or close the accommodating cavity. This design allows the rice cooker to heat the inner pot from both the top and bottom during cooking by using the heating element of the upper cover structure in conjunction with the heating plate at the bottom of the rice cooker. This improves the heating efficiency of the inner pot, and the heating element also prevents condensation on the inner cover, eliminating dripping white residue from the rice and improving its texture.

[0017] The beneficial effects of this utility model are:

[0018] This invention is designed such that the inner and outer lid devices are assembled to form the upper lid structure of the rice cooker, and a heating element is installed on the upper lid structure. When the rice cooker is cooking rice, the heating element can quickly heat up the inner lid device, increasing its temperature. This, combined with the heating structure at the bottom of the rice cooker, provides dual heating of the inner pot from both the top and bottom, thereby improving the heating efficiency of the inner pot. At the same time, the heating element prevents condensation on the inner lid device, preventing the rice from dripping white, and thus improving the taste of the rice. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the upper cover structure of this utility model;

[0020] Figure 2 This is a sectional view of the upper cover structure of this utility model;

[0021] Figure 3 This is an exploded view of the inner cover device of this utility model;

[0022] Figure 4 This is a sectional view of the inner cover of this utility model;

[0023] Figure 5 yes Figure 4 Enlarged view of position A in the middle;

[0024] Figure 6 This is an exploded view of the upper cover structure of this utility model;

[0025] Figure 7 This is an exploded view of the connector assembly of this utility model;

[0026] Figure 8 This is a schematic diagram of the inner cover device and connecting seat assembly before assembly.

[0027] Figure 9 This is a schematic diagram of the inner cover device and the connecting seat assembly after assembly.

[0028] Figure 10 This is a cross-sectional view of the top cover structure and the rice cooker assembly of this utility model;

[0029] Figure 11 This is a block diagram illustrating the working principle of the electric rice cooker of this utility model.

[0030] In the picture:

[0031] 1. Inner cover assembly; 11. Upper inner cover; 111. Buckle; 112. Vent hole two; 12. Heating element; 121. Conductive rod; 13. Lower inner cover; 131. Vent hole one; 132. Clearance groove; 14. Fixing ring; 141. Tongue; 142. Sealing gasket; 143. Sealing ring mounting groove; 144. Locking block; 145. Locking plate; 146. Bay opening; 147. Through hole; 15. Sealing ring; 151. Upper flange; 152. Lower flange; 2. Outer cover assembly; 21. Mounting groove; 211. Locking rib; 212. Inner cover latch; 213. Upper sensor; 214 215. Compression spring; 216. Inner cover locking limit seat; 22. Upper sensor fixing seat; 22. Connecting seat assembly; 221. Connecting seat cover; 222. Conductive sheet; 223. Spring; 224. Sliding seat; 225. Connecting seat; 226. Conductive rod through hole; 227. Tongue guide groove; 228. Conductive rod connecting hole; 229. Through groove one; 230. Through groove two; 23. Bubble breaker; 24. Outer cover; 25. Inner cover fixing seat; 261. Inner cover fixing seat lock; 262. Torsion spring; 27. Exhaust ring; 3. Body; 31. Inner liner; 32. Heating plate; 33. Lower sensor. Detailed Implementation

[0032] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 9 As shown, the present invention discloses a cover structure for use in a rice cooker, comprising an inner cover device 1, wherein a heating element 12 is provided on the inner cover device 1, and a conductive rod 121 is provided on the heating element 12; and an outer cover device 2, wherein a connecting seat assembly 22 is provided on the outer cover device 2, and a conductive sheet 222 is provided on the connecting seat assembly 22; the inner cover device 1 is detachably mounted on the outer cover device 2, and when the inner cover device 1 is mounted on the outer cover device 2, the conductive rod 121 and the conductive sheet 222 are coupled and connected. This configuration allows the inner lid device 1 and the outer lid device 2 to be assembled together to form the upper lid structure of the rice cooker. A heating element 12 is installed on the upper lid structure. When the rice cooker is cooking rice, the heating element 12 can quickly heat the inner lid device 1, increasing its temperature. This, combined with the heating structure at the bottom of the rice cooker, provides dual heating of the inner pot 31 from both the top and bottom, thereby improving the heating efficiency of the inner pot 31. At the same time, the heating element 12 ensures that there is no condensation on the inner lid device 1, preventing the rice from dripping white, thus improving the taste of the rice.

[0034] In practical applications, the conductive rod 121 and the conductive sheet 222 are coupled together to achieve conductivity, eliminating the complex structure of wire connections and making assembly more convenient.

[0035] Furthermore, the inner cover device 1 includes an upper inner cover 11, a lower inner cover 13, a fixing ring 14, and a sealing ring 15. The upper inner cover 11 is fixedly connected to the fixing ring 14. The heating element 12 and the lower inner cover 13 are clamped between the upper inner cover 11 and the fixing ring 14, and the upper end of the sealing ring 15 is clamped between the lower inner cover 13 and the fixing ring 14. The conductive rod 121 of the heating element 12 passes through the lower inner cover 13 and the fixing ring 14 and is coupled and connected to the conductive sheet 222 of the connecting seat assembly 22. With this configuration, the inner cover device 1 is composed of the upper inner cover 11, the heating element 12, the lower inner cover 13, the fixing ring 14, and the sealing ring 15. The upper inner cover 11 is fixedly connected to the fixing ring 14, thereby clamping and fixing the heating element 12, the lower inner cover 13, and the sealing ring 15. Its structure is simple and easy to assemble.

[0036] Furthermore, the lower inner cover 13 is provided with a relief groove 132 corresponding to the conductive rod 121, and the fixing ring 14 is provided with a through hole 147 corresponding to the conductive rod 121. A sealing gasket 142 is fixed in the through hole 147. After the conductive rod 121 passes through the relief groove 132 and the sealing gasket 142, it is coupled and connected to the conductive sheet 222 of the connecting seat assembly 22. With this configuration, the conductive rod 121 of the heating element 12 passes through the lower inner cover 13 and the fixing ring 14 and is led out to be coupled and connected to the conductive sheet 222 of the connecting seat assembly 22. Under the action of the sealing gasket 142, moisture is prevented from entering and interfering with the heating element 12.

[0037] In practical applications, the sealing gasket 142 is a circular tube structure. When the conductive rod 121 is coupled and connected to the conductive sheet 222, the large end of the sealing gasket 142 is located between the fixing ring 14 and the connecting seat assembly 22.

[0038] Furthermore, the fixing ring 14 is provided with a sealing ring mounting groove 143, the upper end of the sealing ring 15 is provided with an upward flange 151, and the lower end of the sealing ring 15 is provided with a downward flange 152. The upward flange 151 passes through the inner hole of the fixing ring 14 and is engaged in the sealing ring mounting groove 143, and is clamped and fixed by the cooperation of the lower inner cover 13 and the fixing ring 14. In this way, the sealing ring 15 is fixed by clamping the upward flange 151 of the sealing ring 15 with the cooperation of the lower inner cover 13 and the fixing ring 14.

[0039] Furthermore, the upper inner cover 11 is provided with multiple buckles 111, and the fixing ring 14 is provided with multiple slots 146, with the buckles 111 and slots 146 engaging in a locking connection. This arrangement securely connects the upper inner cover 11 to the fixing ring 14 through the engagement of the buckles 111 and slots 146, resulting in a simple structure and convenient assembly.

[0040] Furthermore, the connecting seat assembly 22 includes a connecting seat cover 221, a spring 223, a sliding seat 224, and a connecting seat 225. The connecting seat cover 221 is fixedly connected to the connecting seat 225 and forms an inner cavity. The sliding seat 224 is slidably located within the connecting seat 225. The first end of the spring 223 abuts against the inner wall of the connecting seat 225, and the second end of the spring 223 abuts against the outer wall of the sliding seat 224. The first end of the conductive sheet 222 is fixed to the connecting seat 225, and the second end of the conductive sheet 222 is disposed within the sliding seat 224. The conductive rod 121 of the heating element 12 passes sequentially through the lower inner cover 13, the fixing ring 14, the connecting seat 225, and the sliding seat 224 before connecting and communicating with the conductive sheet 222. With this configuration, the connecting seat assembly 22 is formed by the connecting seat cover 221, the conductive sheet 222, the spring 223, the sliding seat 224, and the connecting seat 225, which has a simple structure and is easy to assemble.

[0041] Furthermore, the fixing ring 14 has a protruding latch 141, the length of which the latch 141 protrudes relative to the fixing ring 14 is greater than the length of which the conductive rod 121 protrudes relative to the fixing ring 14, and the end of the latch 141 is formed with a bevel. The connecting seat 225 has a conductive rod through groove 229 and a latch through groove 230. The sliding seat 224 has a conductive rod through hole 226 and a latch guide groove 227. The second end of the conductive sheet 222 has a conductive rod connecting hole 228. The latch through groove 230 on the connecting seat 225 and the latch guide groove 227 on the sliding seat 224 are correspondingly arranged, and the opening of the latch guide groove 227 has a bevel corresponding to the bevel of the latch 141. The conductive rod through groove 229 on the connecting seat 225, the conductive rod through hole 226 on the sliding seat 224, and the conductive rod connecting hole 228 on the conductive sheet 222 are correspondingly arranged. With this configuration, when the inner cover device 1 and the outer cover device 2 are not assembled, the sliding seat 224, under the elastic force of the spring 223, causes the conductive rod through hole 226 on the sliding seat 224 to be misaligned with the conductive rod through groove 229 on the connecting seat 225 and the conductive rod connecting hole 228 on the conductive sheet 222; when the inner cover device 1 and the outer cover device 2 are assembled, the latch 141 on the fixing ring 14 passes through the latch through groove 230 on the connecting seat 225 and corresponds to the latch guide groove 227 on the sliding seat 224, and the inclined surface of the latch 141 abuts against the opening of the latch guide groove 227. Under the action of force, the first inclined surface of the latch 141 slides along the second inclined surface, causing the latch 141 to drive the sliding seat 224 to slide, while compressing the spring 223. This allows the conductive rod through hole 226 on the sliding seat 224 to correspond with the conductive rod through groove 229 on the connecting seat 225 and the conductive rod connecting hole 228 on the conductive sheet 222, making it easier for the conductive rod 121 to extend into the conductive rod connecting hole 228 on the conductive sheet 222 to form a connection. When the inner cover device 1 is removed, the sliding seat 224 resets, preventing the conductive sheet 222 from being exposed, making it safer to use.

[0042] Furthermore, the outer cover device 2 is provided with an installation groove 21 for easy installation and removal of the inner cover device 1. A retaining rib 211 is provided on the inner wall of the first end of the installation groove 21, and an inner cover latch 212 is movably mounted on the inner wall of the first end of the installation groove 21. A latching plate 145 is provided on the outer wall of the first end of the fixing ring 14 of the inner cover device 1 to engage with the retaining rib 211, and a latching block 144 is provided on the outer wall of the second end of the fixing ring 14 of the inner cover device 1 to engage with the inner cover latch 212. An upper sensor 213 is provided inside the installation groove 21. When the inner cover device 1 is installed in the installation groove 21, the inner cover device 1 abuts against the upper sensor 213. This arrangement allows the inner cover device 1 to be easily assembled onto the outer cover device 2.

[0043] In practical applications, the upper sensor 213 is fixed in the mounting groove 21 by the upper sensor fixing seat 216. The inner cover latch 212 is hinged to the outer cover device 2 and limited by the inner cover latch limiting seat 215. A compression spring 214 abuts between the inner cover latch 212 and the inner cover latch limiting seat 215. When the inner cover device 1 and the outer cover device 2 are not assembled, the inner cover latch 212 is in the extended state under the elastic force of the compression spring 214. When the inner cover device 1 is installed in the mounting groove 21, The locking plate 145 at the first end of the fixing ring 14 engages with the locking rib 211 to lock in place. The locking block 144 at the second end of the fixing ring 14 pushes the inner cover latch 212 back and compresses the compression spring 214. When the locking block 144 exceeds the inner cover latch 212, the inner cover latch 212 is pushed out by the rebound force of the compression spring 214 to engage with the locking block 144. At this time, the inner cover device 1 abuts against the upper sensor 213, and the temperature is transmitted in real time. The heating ratio is determined according to the preset temperature range to achieve upper cover temperature control.

[0044] Furthermore, the outer cover device 2 includes a bubble breaker 23, an outer cover 24, an inner cover fixing seat 25, and an exhaust ring 27. The first end of the inner cover fixing seat 25 is hinged to the outer cover 24, and the second end of the inner cover fixing seat 25 is engaged with the outer cover 24. The exhaust ring 27 is located between the inner cover fixing seat 25 and the outer cover 24. The bubble breaker 23 is detachably mounted on the outer cover 24. The lower inner cover 13 of the inner cover device 1 is provided with an exhaust hole 131, and the upper inner cover 11 of the inner cover device 1 is provided with an exhaust hole 112. The exhaust hole 131, the exhaust hole 112, the exhaust ring 27, and the bubble breaker 23 cooperate to form an exhaust passage. With this configuration, the outer cover device 2 is composed of the bubble breaker 23, the outer cover 24, the inner cover fixing seat 25, and the exhaust ring 27, which has a simple structure and is easy to assemble.

[0045] In practical applications, the outer cover 24 is movably provided with an inner cover fixing seat latch 261, and a torsion spring 262 is provided between the inner cover fixing seat latch 261 and the outer cover 24. When the inner cover fixing seat 25 is snapped into place with the outer cover 24, the second end of the inner cover fixing seat 25 is locked in place by the inner cover fixing seat latch 261.

[0046] like Figure 10 and 11As shown, the rice cooker of this utility model includes a body 3 and the aforementioned upper cover structure. The body 3 has a cavity within it, and a removable inner pot 31 is provided inside the cavity. The body 3 is equipped with a heating plate 32 and a lower sensor 33, which are correspondingly positioned at the bottom of the inner pot 31. When the inner pot 31 is installed inside the body 3, its bottom abuts against the heating plate 32 and the lower sensor 33. The upper cover structure is movably mounted on the body 3 and is used to open or close the cavity. With this configuration, when the rice cooker is cooking rice, the heating element 12 of the upper cover structure, in conjunction with the heating plate 32 at the bottom of the rice cooker, provides dual heating to the inner pot 31 from both the top and bottom, improving the heating efficiency of the inner pot 31. Simultaneously, the heating element 12 prevents condensation on the inner cover, eliminating dripping white residue from the rice and thus improving its texture.

[0047] In practical applications, the lower sensor 33 abuts against the bottom of the inner liner 31, and the temperature is transmitted in real time. The heating ratio is determined according to the preset temperature range to achieve temperature control of the heating plate 32.

[0048] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims, and all of these forms are within the scope of protection of the present utility model.

Claims

1. A lid structure for use in an electric rice cooker, characterized in that, include: An inner cover device (1) is provided with a heating element (12), and a conductive rod (121) is provided on the heating element (12); An outer cover device (2) is provided with a connecting seat assembly (22), and a conductive sheet (222) is provided on the connecting seat assembly (22); The inner cover device (1) is detachably installed on the outer cover device (2). When the inner cover device (1) is installed on the outer cover device (2), the conductive rod (121) and the conductive sheet (222) are coupled and connected.

2. The cover structure according to claim 1, characterized in that: The inner cover device (1) includes an upper inner cover (11), a lower inner cover (13), a fixing ring (14), and a sealing ring (15). The upper inner cover (11) is fixedly connected to the fixing ring (14). The heating element (12) and the lower inner cover (13) are clamped between the upper inner cover (11) and the fixing ring (14). The upper end of the sealing ring (15) is clamped between the lower inner cover (13) and the fixing ring (14). The conductive rod (121) of the heating element (12) passes through the lower inner cover (13) and the fixing ring (14) and is coupled and connected to the conductive sheet (222) of the connecting seat assembly (22).

3. The cover structure according to claim 2, characterized in that: The lower inner cover (13) is provided with a relief groove (132) corresponding to the conductive rod (121), and the fixing ring (14) is provided with a through hole (147) corresponding to the conductive rod (121). A sealing gasket (142) is fixed in the through hole (147). After the conductive rod (121) passes through the relief groove (132) and the sealing gasket (142), it is coupled and connected to the conductive sheet (222) of the connecting seat assembly (22).

4. The cover structure according to claim 2, characterized in that: The fixing ring (14) is provided with a sealing ring mounting groove (143), the upper end of the sealing ring (15) is provided with an upper flange (151), the lower end of the sealing ring (15) is provided with a lower flange (152), the upper flange (151) passes through the inner hole of the fixing ring (14) and is snapped into the sealing ring mounting groove (143), and is clamped and fixed by the cooperation of the lower inner cover (13) and the fixing ring (14).

5. The cover structure according to claim 2, characterized in that: The upper inner cover (11) is provided with multiple buckles (111), and the fixing ring (14) is provided with multiple slots (146). The buckles (111) and slots (146) are connected in a locking manner.

6. The top cover structure according to claim 2, characterized in that: The connecting seat assembly (22) includes a connecting seat cover (221), a spring (223), a sliding seat (224), and a connecting seat (225). The connecting seat cover (221) is fixedly connected to the connecting seat (225) and forms an inner cavity. The sliding seat (224) is slidably located inside the connecting seat (225). The first end of the spring (223) abuts against the inner wall of the connecting seat (225), and the second end of the spring (223) abuts against the outer wall of the sliding seat (224). The first end of the conductive sheet (222) is fixed to the connecting seat (225), and the second end of the conductive sheet (222) is located inside the sliding seat (224). The conductive rod (121) of the heating element (12) passes through the lower inner cover (13), the fixing ring (14), the connecting seat (225), and the sliding seat (224) in sequence and then connects and conducts with the conductive sheet (222).

7. The top cover structure according to claim 6, characterized in that: The fixing ring (14) is provided with a latch (141), the length of the latch (141) protruding relative to the fixing ring (14) is greater than the length of the conductive rod (121) protruding relative to the fixing ring (14), and the end of the latch (141) is formed with a bevel; the connecting seat (225) is provided with a conductive rod through groove (229) and a latch through groove (230); the sliding seat (224) is provided with a conductive rod through hole (226) and a latch guide groove (227); the second end of the conductive sheet (222) The connector is provided with a conductive rod connection hole (228); the latch through groove (230) on the connector (225) and the latch guide groove (227) on the sliding seat (224) are correspondingly provided, and the opening of the latch guide groove (227) is provided with a second inclined surface corresponding to the first inclined surface of the latch (141); the conductive rod through groove (229) on the connector (225), the conductive rod through hole (226) on the sliding seat (224) and the conductive rod connection hole (228) on the conductive sheet (222) are correspondingly provided.

8. The cover structure according to claim 2, characterized in that: The outer cover device (2) is provided with an installation groove (21) for easy installation and removal of the inner cover device (1). The inner wall of the first end of the installation groove (21) is provided with a retaining rib (211). The inner cover latch (212) is movably provided on the inner wall of the first end of the installation groove (21). The outer wall of the first end of the fixing ring (14) of the inner cover device (1) is provided with a latching plate (145) that cooperates with the retaining rib (211). The outer wall of the second end of the fixing ring (14) of the inner cover device (1) is provided with a latching block (144) that cooperates with the inner cover latch (212). An upper sensor (213) is provided in the installation groove (21). When the inner cover device (1) is installed in the installation groove (21), the inner cover device (1) abuts against the upper sensor (213).

9. The cover structure according to claim 2, characterized in that: The outer cover device (2) includes a bubble breaker (23), an outer cover (24), an inner cover fixing seat (25), and an exhaust ring (27). The first end of the inner cover fixing seat (25) is hinged to the outer cover (24), and the second end of the inner cover fixing seat (25) is locked to the outer cover (24). The exhaust ring (27) is located between the inner cover fixing seat (25) and the outer cover (24). The bubble breaker (23) is detachably installed on the outer cover (24). The lower inner cover (13) of the inner cover device (1) is provided with an exhaust hole one (131), and the upper inner cover (11) of the inner cover device (1) is provided with an exhaust hole two (112). The exhaust hole one (131), the exhaust hole two (112), the exhaust ring (27), and the bubble breaker (23) cooperate to form an exhaust passage.

10. An electric rice cooker, characterized in that: The device includes a body (3) and a cover structure as described in any one of claims 1-9. The body (3) has a cavity, and a removable inner liner (31) is provided inside the cavity. The body (3) is provided with a heating plate (32) and a lower sensor (33) corresponding to the bottom of the inner liner (31). When the inner liner (31) is assembled inside the body (3), the bottom of the inner liner (31) abuts against the heating plate (32) and the lower sensor (33). The cover structure is movably mounted on the body (3) and is used to open or close the cavity.

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