Heating disc protection structure and electric rice cooker

Abstract

The application provides a heating disc protection structure and an electric rice cooker. The heating disc protection structure comprises a bracket assembly, a supporting assembly and an adjusting assembly. The bracket assembly is arranged outside the heating disc. The supporting assembly is used for changing the height position of the bracket assembly, so that the supporting surface of the bracket assembly is higher or lower than the top surface of the heating disc. The adjusting assembly is used for adjusting the supporting assembly by the cover closing action. After the cover is closed in place, the supporting surface of the supporting assembly is lower than the top surface of the heating disc. The heating disc protection structure can provide support and protection for the heating disc, reduce the friction or collision between the inner pot and the heating disc, and maintain the normal use of the heating disc.

Description

Technical Field

[0001] This invention relates to the field of electric rice cookers, and more specifically, to a heating plate protection structure and an electric rice cooker. Background Technology

[0002] An electric rice cooker is a common kitchen appliance. Its core working principle is to transfer heat from a heating plate at the bottom to the inner pot, thereby heating or cooking food. The heating plate is usually made of metal and coated with a non-stick coating such as Teflon. The integrity of the heating plate directly affects the heating efficiency and lifespan of the rice cooker.

[0003] In daily use, the inner pot needs to be frequently removed and placed in the main pot. Due to improper operation, user negligence, or deformation of the inner pot itself, the bottom or edge of the inner pot is very prone to friction or collision with the surface of the heating plate. This can cause the coating to peel off more quickly or directly cause the heating plate to be deformed by collision, affecting normal use. Therefore, this needs to be improved. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a heating plate protection structure and a rice cooker, which can provide support and protection for the heating plate, reduce friction or collision between the inner pot and the heating plate, so as to maintain the normal use of the heating plate.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This invention provides a heating plate protection structure, including a bracket assembly, a support assembly, and an adjustment assembly; the bracket assembly surrounds the outside of the heating plate; the support assembly is adjustable to change the height position of the bracket assembly, so that the support surface of the bracket assembly is higher or lower than the top surface of the heating plate; the adjustment assembly adjusts the support assembly by the action of closing the lid; after the lid is closed, the support surface of the support assembly is lower than the top surface of the heating plate.

[0007] In a preferred embodiment of the present invention, the support assembly includes a pusher and a support frame. The support frame is located below the heating plate and is fixedly installed on the inner wall of the pot body by bolts. There are two pushers, which are respectively located on the outer sides of both ends of the support frame. The two end faces of the support frame are provided with first guide holes. Guide bolts are installed at the ends of the pushers, and the guide bolts are movably inserted through the first guide holes. A first spring is sleeved on the guide bolts, and the first spring is clamped between the support frame and the pusher, providing the pusher with a pushing force in the direction away from the support frame. The bracket assembly has two kits corresponding to the two pushers, and the pushers are inserted through the kits. There are two adjusting components, which are respectively provided at the ends of the pushers. When the pot lid is closed, the adjusting components are pressed down to push the pushers, so that the pushers release the support of the kits and drive the kits down during subsequent movement, thereby changing the position of the bracket assembly.

[0008] In a preferred embodiment of the present invention, the bracket assembly includes a support ring. At least two second guide rods are fixedly provided on the bottom surface of the support ring. The number of second guide rods is even, and the positions of two of them correspond to the positions of the pusher. The support ring is located in a recessed cavity of the pot body, outside the heating plate. The bottom of the recessed cavity has second guide holes, the number of which is the same as the number of second guide rods. The second guide rods are movably inserted through the second guide holes. A kit is installed at the bottom end of the second guide rod corresponding to the pusher. The pusher is inserted into the kit. When the support assembly is in its initial state, the pusher supports the kit, making the top surface of the support ring higher than the top surface of the heating plate. When the adjustment assembly applies force to the pusher, the pusher disengages from the support portion of the kit during movement, and moves the kit downwards, making the top surface of the support ring lower than the top surface of the heating plate.

[0009] In a preferred embodiment of the present invention, the bottom inner wall of the kit is provided with an inclined first sliding surface, which is inclined upward toward the center of the heating plate; the pusher includes a pusher frame and a support frame, the pusher frame includes a support plate, a first support block is fixedly provided on the top surface of the support plate away from the support frame, a second support block is fixedly provided on the top of the first support block near the center of the support plate, a third support block is fixedly provided on the top of the second support block away from the first support block, the third support block is inclined upward toward the side away from the first support block, and a fixed part is provided at the higher inclined end of the third support block. There is a fourth support block; a support frame is installed between the bottom surface of the fourth support block and the top surface of the end of the support plate, and guide bolts are installed on the support frame; the inclination of the third support block is the same as the inclination of the first sliding surface; the bottom surface of the second support block is provided with an inclined second sliding surface, and the inclination of the second sliding surface is the same as the inclination of the first sliding surface; when the support assembly is in the initial state, the top surface of the fourth support block is in contact with the top inner wall of the kit, providing support for the kit; when the adjusting assembly applies force to the pusher, the second sliding surface enters the interior of the kit and contacts the first sliding surface, causing the kit to move downward.

[0010] In a preferred embodiment of the present invention, the top of the side of the first support block away from the second support block is provided with an inclined third sliding surface;

[0011] The adjustment assembly includes a pressure member, a third spring, and a pressure block; the pressure member is movably mounted on the pot body and is set corresponding to the push member; the third spring is sleeved on the pressure member and provides the pressure member with an upward push-reset elastic force; the pressure block is installed at the bottom of the pressure member, and the bottom of the side of the pressure block near the push member is provided with an inclined fourth sliding surface, which abuts against the third sliding surface.

[0012] In a preferred embodiment of the present invention, the pressing component includes a third guide post, a fourth guide post fixedly provided at the bottom end of the third guide post, the fourth guide post having a square strip structure, and the diagonal side length of the cross-section of the fourth guide post being smaller than the diameter of the third guide post; a third guide hole is provided at the top of the pot body corresponding to the third guide post, and a guide ring is fixedly provided on the inner wall of the pot body corresponding to the fourth guide post, the inner hole shape of the guide ring being adapted to the shape of the fourth guide post; the pressing component is movably inserted through the third guide hole and the guide ring; a third spring is sleeved on the fourth guide post and clamped between the bottom end of the third guide post and the guide ring, providing an upward pushing force for the pressing component; the pressing block is installed at the bottom end of the fourth guide post by bolts.

[0013] In a preferred embodiment of the present invention, a locking component is included; the locking component is used to lock the pusher after it has been moved into place, so that it cannot be reset, thereby keeping the top surface of the support ring lower than the top surface of the heating plate; for the function of opening the lid and cooking.

[0014] In a preferred embodiment of the present invention, the locking component includes a limiting frame and two electromagnetic push rods for moving the limiting frame.

[0015] The limiting frame includes a push plate, with stops fixed at both ends of the push plate; the piston rod end of the electromagnetic push rod is connected and installed on the push plate;

[0016] The bottom support of the pot body is fixedly provided with a support frame corresponding to two blocks. The blocks are slidably positioned at the support frame, and the position of the blocks corresponds to the end position of the pusher after it has been moved into place. The extended blocks can block and limit the end face of the pusher.

[0017] The present invention also provides an electric rice cooker, including the heating plate protection structure described above.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention provides a heating plate protection structure and a rice cooker. The heating plate protection structure includes a bracket assembly, a support assembly, and an adjustment assembly. The bracket assembly surrounds the outside of the heating plate. The support assembly is adjustable to change the height position of the bracket assembly, so that the support surface of the bracket assembly is higher or lower than the top surface of the heating plate. The adjustment assembly adjusts the support assembly by the action of closing the lid. After the lid is closed, the support surface of the support assembly is lower than the top surface of the heating plate.

[0020] In its initial state, the support component supports the bracket assembly, ensuring that the support surface of the bracket assembly is higher than the top surface of the heating plate. This serves as the first contact point for the bottom of the inner pot, effectively preventing contact between the inner pot and the heating plate and thus preventing friction and collision issues. When the lid is closed, the support surface of the bracket assembly is lowered below the top surface of the heating plate, allowing the bottom of the inner pot to directly contact the heating plate for the necessary heat conduction and cooking. Overall, this combination reduces the number and frequency of contact between the inner pot and the heating plate, thus protecting the heating plate. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a rice cooker provided in a specific embodiment of the present invention;

[0022] Figure 2 This is a first-view three-dimensional unfolded structural diagram of the pot body provided in a specific embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional unfolded structure of the pot body from a second perspective in a specific embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the pot body provided in a specific embodiment of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the base and its components provided in a specific embodiment of the present invention;

[0026] Figure 6 This is a first-view three-dimensional unfolded structural diagram of the base and its components provided in a specific embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the three-dimensional unfolded structure of the base and its components provided in a specific embodiment of the present invention from a second perspective.

[0028] Figure 8 This is a cross-sectional view of the bracket assembly provided in a specific embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the three-dimensional unfolded structure of the support component provided in a specific embodiment of the present invention;

[0030] Figure 10 This is a three-dimensional structural schematic diagram of the pusher provided in a specific embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the three-dimensional unfolded structure of the adjustment component provided in a specific embodiment of the present invention;

[0032] In the picture:

[0033] 100. Bracket assembly; 110. Kit; 111. First sliding surface; 120. Support ring; 130. Second guide rod;

[0034] 200, Support assembly; 210, Pushing component; 211, Push frame; 2111, First support block; 2112, Second support block; 2113, Third support block; 2114, Fourth support block; 2115, Support plate; 2116, Second sliding surface; 2117, Third sliding surface; 212, Support frame; 220, Support bracket; 221, First guide hole; 230, Guide bolt; 240, First spring;

[0035] 300. Adjustment component; 310. Pressure element; 311. Third guide post; 312. Fourth guide post; 320. Third spring; 330. Pressure block; 331. Fourth sliding surface;

[0036] 400. Locking assembly; 410. Limit bracket; 411. Push plate; 412. Stop block; 420. Electromagnetic push rod;

[0037] 610. Heating plate; 620. Pot lid; 630. Pot body; 631. Cavity; 632. Second guide hole; 633. Third guide hole; 634. Guide ring; 640. Base; 641. Support frame. Detailed Implementation

[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1 to 4 As shown, a specific embodiment of the present invention discloses a heating plate protection structure, including a bracket assembly 100, a support assembly 200, and an adjustment assembly 300; the bracket assembly 100 surrounds the outer side of the heating plate 610; the support assembly 200 is adjustable to change the height position of the bracket assembly 100, so that the support surface of the bracket assembly 100 is higher or lower than the top surface of the heating plate 610; the adjustment assembly 300 adjusts the support assembly 200 by the closing action of the pot lid 620; after the pot lid is closed, the support surface of the support assembly is lower than the top surface of the heating plate.

[0040] The aforementioned heating plate protection structure, in its initial state, supports the bracket assembly, ensuring that the support surface of the bracket assembly is higher than the top surface of the heating plate. This serves as the first contact point for the bottom of the inner pot, effectively preventing contact between the inner pot and the heating plate and mitigating friction and collision issues. When the lid is closed, the support surface of the bracket assembly is lower than the top surface of the heating plate, allowing the bottom of the inner pot to directly contact the heating plate for heat conduction and cooking. Overall, this design reduces the number and frequency of contact between the inner pot and the heating plate, thus protecting the heating plate.

[0041] Furthermore, such as Figure 4 , Figure 9 As shown, the support assembly 200 includes a pusher 210 and a support frame 220. The support frame 220 is located below the heating plate 610 and is fixedly installed on the inner wall of the pot body 630 by bolts. There are two pushers 210, which are respectively located on the outer sides of both ends of the support frame. The two end faces of the support frame 220 are provided with first guide holes 221. The ends of the pushers 210 are correspondingly equipped with guide bolts 230, which are movably inserted through the first guide holes 221. A first spring 240 is sleeved on the guide bolt 230. The first spring 240 is clamped between the support frame 220 and the pusher 210, providing the pusher with a spring force to push it away from the support frame, so as to maintain its initial state and reset it after subsequent adjustment.

[0042] like Figure 8 As shown, the bracket assembly 100 has two kits 110 corresponding to the two pushers. The pushers 210 are inserted into the kits 110 to enable them to engage with the bracket assembly. There are two adjusting components 300, which are respectively set at the ends of the pushers 210. When the lid is closed, the adjusting components are pressed down, and the pushers are pushed to release the support of the kits. In the subsequent movement, the kits are moved down, thereby changing the position of the bracket assembly. The action of the lid is cleverly used as the power to adjust the bracket assembly, without the need for other additional adjustment operations, which is convenient for actual use. At the same time, it ensures that the inner pot and the heating plate are in contact and conduct heat after the lid is closed.

[0043] Furthermore, such as Figures 6 to 8 As shown, the bracket assembly 100 includes a support ring 120. At least two second guide rods 130 are fixedly provided on the bottom surface of the support ring 120. The number of second guide rods is even, and the positions of two of them correspond to the positions of the pushers. The support ring 120 is located in the cavity 631 of the pot body 630, outside the heating plate 610. The bottom of the cavity 631 is provided with second guide holes 632, the same number as the number of second guide rods. The second guide rods 130 are movably inserted through the second guide holes 632, effectively limiting the movement of the support ring so that it can only move vertically along the second guide holes to perform the required smooth lifting and lowering.

[0044] The kit 110 is installed at the bottom end of the second guide rod 130 corresponding to the pusher; the pusher passes through the kit and supports the kit when the support assembly is in the initial state, so that the top surface of the support ring is higher than the top surface of the heating plate; it also provides the necessary support force to bear the weight of the inner pot and the food and prevent the inner pot from contacting the heating plate.

[0045] When the adjusting component applies force to the pusher, the pusher disengages from the support of the assembly during its movement, causing the assembly to move downwards, so that the top surface of the support ring is lower than the top surface of the heating plate. During the movement of the pusher, the support is released and the assembly is moved downwards. Following the coordinated movement of the adjusting component and the pusher, the bottom of the inner pot contacts the heating plate for heat conduction. A second spring is sleeved on the outer side of the second guide rod, sandwiched between the bottom surface of the pressure ring and the bottom surface of the cavity. The second spring provides an upward pushing force to the support ring. This design provides the support ring with the spring force to return to its original position after the force on the inner pot is released, and also provides some auxiliary force for the return of the supporting component, ensuring that the entire assembly smoothly returns to its initial state, preparing for the next inner pot to be placed in. This design accommodates the need to remove the inner pot for cleaning after a meal, allowing each component to return to its corresponding position during this action without requiring deliberate secondary adjustments.

[0046] It should be noted that a metal inner pot is installed in the recessed cavity, and the metal inner pot has corresponding holes. It can strengthen the structure and prevent the plastic pot body from directly contacting the heating plate. It is one of the conventional structural components of rice cookers and is well known to those skilled in the art. The specific structure will not be described in detail.

[0047] Furthermore, such as Figure 8 As shown, the bottom inner wall of the kit 110 is provided with an inclined first sliding surface 111, which is inclined upward towards the center of the heating plate; as Figure 9 , Figure 10 As shown, the jacking component 210 includes a pusher frame 211 and a support frame 212. The pusher frame 211 includes a support plate 2115. A first support block 2111 is fixedly mounted on the top surface of the end of the support plate 2115 away from the support frame 220. A second support block 2112 is fixedly mounted on the top side of the first support block 2111 near the center of the support plate. A third support block 2113 is fixedly mounted on the top side of the second support block 2112 away from the first support block. The third support block is inclined upwards towards the side away from the first support block. A fourth support block 2114 is fixedly mounted at the higher inclined end of the third support block 2113. The support frame 212 is installed on the bottom of the fourth support block 2114. Between the top surface of the support plate 2115 and the end of the support block 2113, the guide bolt 230 is installed on the support frame 212; the inclination of the third support block 2113 is consistent with the inclination of the first sliding surface 111; the bottom surface of the second support block 2112 is provided with an inclined second sliding surface 2116, and the inclination of the second sliding surface 2116 is consistent with the inclination of the first sliding surface 111; when the support assembly is in the initial state, the top surface of the fourth support block is in contact with the top inner wall of the kit, providing support for the kit. Without the intervention of other lateral forces, the vertical force is maintained, which can provide stable support for the kit and its support ring, effectively strengthening the support force for the inner pot;

[0048] When the adjusting component applies force to the pusher, the second sliding surface enters the interior of the kit and contacts the first sliding surface, causing the kit to move downward. The force applied by the adjusting component to the pusher will cause the original force to become unbalanced. During the movement of the pusher, the second sliding surface will exert a downward force on the first sliding surface, thereby pulling the entire support ring down to the required position, so that the support ring is lower than the top surface of the heating plate, which means that the bottom surface of the inner pot contacts the heating plate for heat conduction.

[0049] Furthermore, the support frame is bolted to the fourth support block and support plate. On the one hand, it can strengthen this part of the jacking component and improve the structural strength; on the other hand, it can be used as the installation point for guide bolts by opening threaded holes. Moreover, the support frame is a detachable structure, which facilitates the overall assembly. First, the push frame part is inserted into the kit, and then the support frame is installed in place. With this cooperation, when the support component is in the initial state, the top of the side wall of the support frame abuts against the end face of the kit, which can limit the size of the support mating part between the fourth support block and the kit, so that the support part is controlled within the preset range, ensuring that the jacking component can achieve normal disengagement and release of support when subjected to force.

[0050] Furthermore, such as Figure 10 As shown, the top of the first support block 2111 on the side away from the second support block 2112 is provided with an inclined third sliding surface 2117; as Figure 11 As shown, the adjustment assembly 300 includes a pressure member 310, a third spring 320, and a pressure block 330. The pressure member 310 is movably mounted on the pot body 630 and is positioned corresponding to the push member 210. The third spring 320 is sleeved on the pressure member 310, providing an upward pushing force for the pressure member to return to its original position. The pressure block 330 is installed at the bottom of the pressure member 310, and the bottom of the pressure block 330 near the push member has an inclined fourth sliding surface 331, which slides against the third sliding surface 2117. This structural design utilizes the downward force exerted by the pot lid on the pressure member, and through the lateral force formed by the fourth and third sliding surfaces, drives the push member to move in the desired direction, thereby moving the assembly down to a preset height position to achieve the required adjustment action. The design of the third spring facilitates the return of the pressure member and reduces the resistance to the return of the push member, making it easier to adjust the return of each structural component.

[0051] Furthermore, such as Figure 11 As shown, the pressure member 310 includes a third guide post 311, and a fourth guide post 312 is fixedly provided at the bottom end of the third guide post 311. The fourth guide post has a square strip structure, and the diagonal side length of the cross-section of the fourth guide post is smaller than the diameter of the third guide post; as shown... Figures 1 to 3As shown, the top of the pot body 630 is provided with a third guide hole 633 corresponding to the third guide post 311, and the inner wall of the pot body 630 is fixedly provided with a guide ring 634 corresponding to the fourth guide post 312. The inner hole shape of the guide ring 634 is adapted to the shape of the fourth guide post 312. The pressure piece is movably inserted through the third guide hole and the guide ring. The third spring 320 is sleeved on the fourth guide post 312 and clamped between the bottom end of the third guide post 311 and the guide ring 634, providing an upward pushing force for the pressure piece. The pressure block 330 is installed at the bottom end of the fourth guide post 312 by bolts. This structural design allows the third guide post and the third guide hole to be connected. The cooperation between the fourth guide post and the guide ring effectively limits the movement of the pressure piece. Since the fourth guide post has a square bar structure and is adapted to the inner wall shape of the guide ring, it can only move vertically and will not rotate. This allows the pressure block to make and maintain the required pushing fit with the pusher. The third guide post has a cylindrical structure and is designed for sealing and waterproofing. The inner wall of the third guide hole is equipped with at least two sealing rings. The third guide post moves through the sealing rings at the third guide hole and forms a sealed sliding fit, which can prevent backflow water from the top of the pot from entering the pot through the third guide hole.

[0052] Furthermore, such as Figures 5 to 7 As shown, it includes a locking component 400; the locking component 400 is used to lock the push member 210 after it has moved into place, preventing it from resetting, thereby keeping the top surface of the support ring lower than the top surface of the heating plate for the open-lid cooking function; open-lid cooking is a common operation in practical applications. The locking component is designed to be activated by a button to lock the push member a second time. Even when the lid is open, the support ring can still be kept in the lowered position, thus maintaining the contact and heat conduction between the inner pot and the heating plate, thereby achieving the desired heating effect during the open-lid process; this heating process also prevents the support ring from contacting the inner pot, reducing heat transfer and waste.

[0053] Furthermore, the locking assembly 400 includes a limiting frame 410 and two electromagnetic push rods 420 for moving the limiting frame; the limiting frame 410 includes a push plate 411, and stops 412 are fixedly provided at both ends of the push plate 411; the piston rod ends of the electromagnetic push rods 420 are connected and installed on the push plate 411; a support frame 641 is fixedly provided on the bottom support 640 of the pot body 630 corresponding to the two stops 412, the stops 412 are slidably disposed at the support frame 641, and the position of the stops is aligned with the end of the push member after it has moved into place. Corresponding to the position of the part, the extended stop can block and limit the end face of the pusher; the electromagnetic push rod is a commonly used structural device on the market. When energized, it can extend a piston rod, and when de-energized, it will return to its original position under the action of a spring, which can meet the pushing and resetting requirements of the limit frame; the design of the support frame can provide a guiding effect for the stop and can also disperse and transfer the force on the stop, providing an effective blocking and support effect; the bottom support is detachably installed at the bottom of the pot body to facilitate the disassembly and assembly of its internal structure.

[0054] It should be noted that the components driving the limit frame to move back and forth include, but are not limited to, electromagnetic push rods. Electric push rods, motors in conjunction with gears and racks, etc., can also be used. The structure of two electromagnetic push rods allows for dual-part pushing, achieving smooth movement. Furthermore, electromagnetic push rods are simpler in structure and lower in cost compared to other instruments. In addition, the operating program of the electromagnetic push rods can be set. During the initial pushing, both can be energized simultaneously to extend the piston rods. Subsequently, the locking effect can be maintained by alternating the energization of the electromagnetic push rods, which prevents them from being damaged due to prolonged operation.

[0055] A specific embodiment of the present invention also discloses an electric rice cooker, including the aforementioned heating plate protection structure.

[0056] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A heating plate protection structure, characterized in that: Includes bracket assembly, support assembly, and adjustment assembly; The bracket assembly surrounds the outside of the heating plate; The support assembly is adjustable to change the height position of the bracket assembly, so that the support surface of the bracket assembly is higher or lower than the top surface of the heating plate. The adjustment component uses the lid closing action to adjust the support component; after the lid is closed, the support surface of the bracket component is lower than the top surface of the heating plate. The support components include the jacking component and the support frame; The support frame is located below the heating plate and is fixed to the inner wall of the pot body by bolts; There are two jacking components, which are respectively located on the outer sides of both ends of the support frame; the two end faces of the support frame are provided with first guide holes; The end of the jacking component is equipped with a guide bolt, which is movably inserted through the first guide hole; A first spring is fitted on the guide bolt. The first spring is clamped between the support frame and the pusher, providing the pusher with a spring force to push it away from the support frame. The bracket assembly has two kits corresponding to the two pushers, and the pushers are inserted into the kits; the number of adjustment components is 2, which are respectively set at the ends of the pushers; When the lid is closed, the adjustment component is pressed down, and the pusher is pushed to release the support of the kit. During the subsequent movement, the kit is moved down, thereby changing the position of the bracket assembly. The bracket assembly includes a support ring, and at least two second guide rods are fixedly provided on the bottom surface of the support ring. The number of second guide rods is even, and the positions of two of them correspond to the positions of the pushers. The support ring is located in the concave cavity of the pot body, on the outside of the heating plate; the bottom of the concave cavity is provided with a second guide hole with the same number as the second guide rod; the second guide rod is movably inserted through the second guide hole; the kit is installed at the bottom end of the second guide rod corresponding to the pusher; The pusher is inserted into the kit. When the support assembly is in its initial state, the pusher supports the kit so that the top surface of the support ring is higher than the top surface of the heating plate. When the adjusting component applies force to the pusher, the pusher disengages from the support part of the kit during the movement, and drives the kit to move down, so that the top surface of the support ring is lower than the top surface of the heating plate. The bottom inner wall of the kit is provided with an inclined first sliding surface, which is inclined upward towards the center of the heating plate. The jacking component includes a pusher and a support frame. The pusher includes a support plate. A first support block is fixedly provided on the top surface of the support plate at the end away from the support frame. A second support block is fixedly provided on the top of the first support block near the center of the support plate. A third support block is fixedly provided on the top of the second support block at the side away from the first support block. The third support block is inclined upward towards the side away from the first support block. A fourth support block is fixedly provided at the higher end of the inclination of the third support block. The support frame is installed between the bottom surface of the fourth support block and the top surface of the end of the support plate, and the guide bolts are installed on the support frame; The inclination of the third support block is the same as the inclination of the first sliding surface; The bottom surface of the second support block is provided with an inclined second sliding surface, and the inclination of the second sliding surface is the same as that of the first sliding surface. When the support assembly is in its initial state, the top surface of the fourth support block is in contact with the top inner wall of the kit, providing support for the kit; When the adjusting component applies force to the pusher, the second sliding surface enters the interior of the kit and contacts the first sliding surface, causing the kit to move downward. Includes a locking component; the locking component is used to lock the pusher after it has been moved into place, preventing it from resetting, thereby keeping the top surface of the support ring lower than the top surface of the heating plate; used for the open-lid cooking function.

2. The heating plate protection structure according to claim 1, characterized in that: The top of the first support block on the side away from the second support block is provided with an inclined third sliding surface; The adjustment assembly includes a pressure member, a third spring, and a pressure block; The pressure component is movably mounted on the pot body and is set in accordance with the push component; the third spring is sleeved on the pressure component to provide the pressure component with an upward push and reset elastic force; The pressure block is installed at the bottom of the pressure member. The bottom of the pressure block near the push member has an inclined fourth sliding surface, which slides against the third sliding surface.

3. The heating plate protection structure according to claim 2, characterized in that: The pressure component includes a third guide post, and a fourth guide post is fixedly provided at the bottom end of the third guide post. The fourth guide post has a square strip structure, and the diagonal side length of the cross-section of the fourth guide post is smaller than the diameter of the third guide post. The top of the pot body is provided with a third guide hole corresponding to the third guide post, and the inner wall of the pot body is provided with a guide ring corresponding to the fourth guide post. The inner hole shape of the guide ring is adapted to the shape of the fourth guide post; the pressure piece is movably inserted through the third guide hole and the guide ring. The third spring is sleeved on the fourth guide post and clamped between the bottom end of the third guide post and the guide ring, providing an upward pushing force for the pressure piece; The pressure block is installed at the bottom of the fourth guide post by bolts.

4. The heating plate protection structure according to claim 1, characterized in that: The locking assembly includes a limit frame and two electromagnetic push rods for moving the limit frame; The limiting frame includes a push plate, with stops fixed at both ends of the push plate; the piston rod end of the electromagnetic push rod is connected and installed on the push plate; The bottom support of the pot body is fixedly provided with a support frame corresponding to two blocks. The blocks are slidably positioned at the support frame, and the position of the blocks corresponds to the end position of the pusher after it has been moved into place. The extended blocks can block and limit the end face of the pusher.

5. An electric rice cooker, characterized in that: Includes the heating plate protection structure as described in any one of claims 1 to 4.

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