Heating base

Abstract

A heating base comprises a shell, a top cover, a heating component, a circuit board assembly and a heat insulation piece, an electric appliance cavity is formed in the shell, the top cover is arranged at the top of the shell, the heating component is arranged at the top of the top cover, and the circuit board assembly is arranged in the electric appliance cavity and electrically connected with the heating component. The heat insulation part is arranged between the circuit board assembly and the heating part so as to block heat transfer between the circuit board assembly and the heating part. According to the heating base provided by the utility model, the circuit board assembly is subjected to heat insulation treatment, so that the service life of the circuit board assembly is prolonged, and the service life of the heating base is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and particularly relates to a heating base. Background Art

[0002] As one of the commonly used components on electric heating devices, the heating base is widely used on electric heating devices such as electric kettles, health kettles, and electric rice cookers. By placing heating containers such as beverage containers and cooking containers on the heating base, the substances in the heating containers can be heated.

[0003] For a conventional heating base, as disclosed in the patent document No. CN219846088U, it includes a housing, a top shell is embedded and installed on the top of the housing. The top shell includes an installation part, a heating part is provided on the installation part, a push rod is slidably installed on the installation part, and the bottom end of the push rod is a wedge-shaped block; it also includes a control switch, the control switch includes a power switch and a sliding contact piece, an elastic contact piece is provided on the power switch, the sliding contact piece is slidably installed at the bottom of the top shell, and one end of the sliding contact piece abuts against the wedge-shaped block, and the heating part is in electrical sliding contact with the sliding contact piece; the problem is that for the heating base with the above structure, the heating part generates extremely high heat during operation. As the working time increases, the high-temperature heat will continuously transfer into the housing, resulting in the temperature of electrical components such as the control switch and the circuit board being too high and malfunctioning, affecting the service life and use safety of the heating base.

[0004] Therefore, further improvement is needed. Summary of the Utility Model

[0005] An object of the utility model is to at least overcome one of the deficiencies existing in the above-mentioned prior art, and provide a heating base which insulates the circuit board assembly, prolongs the service life of the circuit board assembly, and ensures the service life of the heating base.

[0006] To achieve the above object, the technical solution provided by the embodiment of the utility model is:

[0007] A heating base includes a housing, a top cover, a heating component, a circuit board assembly, and a heat insulation member. An electrical cavity is provided on the housing, the top cover is arranged on the top of the housing, the heating component is arranged on the top of the top cover, the circuit board assembly is arranged in the electrical cavity and is electrically connected to the heating component, and the heat insulation member is arranged between the circuit board assembly and the heating component to block the heat transfer between the circuit board assembly and the heating component.

[0008] The circuit board assembly includes a control component, the control component includes a control board and is disposed on the bottom surface of the top cover. The heat insulation member includes a first heat insulation component, and the first heat insulation component is disposed between the control board and the top cover. The first heat insulation component is provided with a first heat insulation cavity and a first opening communicating with the first heat insulation cavity. The first opening faces downward and is disposed on the end surface of the first heat insulation component away from the heating component. The control board is fitted into the first heat insulation cavity through the first opening.

[0009] A first mounting structure is provided between the first heat insulation component and the top cover. The first mounting structure includes a first mounting hole disposed on the top cover, a first mounting through hole disposed on the first heat insulation component corresponding to the first mounting hole, and a first fastening component cooperating with the first mounting hole. The first mounting hole is disposed on the bottom surface of the top cover. The first mounting through hole is disposed on the end surface of the first heat insulation component close to the heating component. The first fastening component passes through the first mounting through hole and is connected to the first mounting hole, so that the first heat insulation component is mounted on the top cover.

[0010] A first positioning structure is provided between the first heat insulation component and the top cover. The first positioning structure includes a first positioning post disposed on the top cover and a first positioning hole disposed on the first heat insulation component corresponding to the first positioning post. The first positioning post extends downward from the bottom surface of the top cover. The first positioning hole is disposed through the end surface of the first heat insulation component close to the heating component. The first heat insulation component is mounted on the top cover, and the first positioning post extends into the first positioning hole, so that the first heat insulation component is positioned and mounted on the top cover.

[0011] The circuit board assembly includes an operating component. The operating component includes a control panel and a wire component and is fastened to the side wall of the housing. The heat insulation member includes a second heat insulation component. The second heat insulation component is mounted on the operating component and is located outside the control panel. The second heat insulation component is provided with a second heat insulation cavity, a second opening communicating with the second heat insulation cavity, and a second wire opening for the wire component to pass out of the second heat insulation cavity. The second opening is disposed on the end surface of the second heat insulation component close to the control panel. The second wire opening is disposed on the side wall of the second heat insulation component. The second heat insulation component is mounted on the operating component, and the control panel partially extends into the second heat insulation cavity through the second opening.

[0012] A second mounting structure is provided between the second heat insulation component and the operating component. The second mounting structure includes a second mounting hole disposed on the operating component, a second mounting through hole disposed on the second heat insulation component corresponding to the second mounting hole, and a second fastening component cooperating with the second mounting hole. The second mounting hole is located on the left side and / or the right side of the control panel. The second mounting through hole is disposed on the left outer edge and / or the right outer edge of the second heat insulation component. The second fastening component passes through the second mounting through hole and is connected to the second mounting hole, so that the second heat insulation component is mounted on the housing.

[0013] A second positioning structure is provided between the second heat insulation component and the control panel. The second positioning structure includes a second positioning post provided on the second heat insulation component and a second positioning hole provided on the control panel. The second positioning post extends upward from the bottom surface of the second heat insulation cavity. The second positioning hole is penetrated and provided on the second heat insulation component. The second heat insulation component is installed on the top cover, and the second positioning post extends into the second positioning hole to position the second heat insulation component on the control panel.

[0014] The heating base further includes a protection switch device. The protection switch device includes a movable component, a switch component provided at the bottom end of the movable component, and a reset component for resetting the movable component upward. The movable component includes a support portion, a reset portion, and a push rod portion. The support portion is located at the top of the movable component and partially extends out of the support surface of the heating component. The reset portion is located in the middle of the movable component. The push rod portion is located at the bottom of the movable component and penetrates downward through the top cover and abuts against the opening and closing end of the switch component. The reset component is located between the reset portion and the top cover and is sleeved on the outside of the push rod portion.

[0015] The top cover is provided with a movable hole for the push rod portion to penetrate downward through the top cover. The movable hole is located on the central axis of the top cover. A guiding structure is provided between the top cover and the movable component. The guiding structure includes a guiding chute provided on one of the movable hole and the push rod portion, and a guiding slide rail provided on the other of the movable hole and the push rod portion and corresponding to the guiding chute. The guiding chute and the guiding slide rail extend along the height direction of the heating base. The guiding slide rail slides back and forth along the length direction of the guiding chute to guide the movable component to slide along the height direction of the heating base.

[0016] The top cover is detachably installed on the housing. A third installation structure is provided between the housing and the top cover. The third installation structure includes a first buckle portion provided on the housing and a second buckle portion provided on the top cover and corresponding to the first buckle portion. The first buckle portion is provided on the inner side wall of the housing. The second buckle portion is provided on the outer side wall of the top cover. The first buckle portion and the second buckle portion are buckled with each other to install the top cover on the housing. The first buckle portion and the second buckle portion are separated from each other to detach the top cover from the housing.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By providing a heat insulation member outside the circuit board assembly in the present utility model, the heat insulation member blocks the heat transfer between the circuit board assembly and the heating component, which can reduce the contact of high-temperature heat with the circuit board assembly to a certain extent, reduce the probability of the circuit board assembly malfunctioning, extend the service life of the circuit board assembly, and ensure the service life and performance of the heating base.

[0019] In addition, the heating base adopting the above technical solution can reduce the short - circuit problem caused by the failure of the circuit board assembly, ensuring the safe use of the heating base. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a heating base according to an embodiment of the present utility model.

[0021] Figure 2 FIG. is an exploded view of a heating base according to an embodiment of the present utility model.

[0022] Figure 3 FIG. is an exploded view of a heating base according to an embodiment of the present utility model.

[0023] Figure 4 FIG. is a cross - sectional view of a heating base according to an embodiment of the present utility model.

[0024] Figure 5 FIG. is an exploded view of a top cover, a control component and a protection switch device according to an embodiment of the present utility model.

[0025] Figure 6 FIG. is an exploded view of a top cover, a control component and a protection switch device according to an embodiment of the present utility model.

[0026] Figure 7 FIG. is a schematic structural diagram of a movable component according to an embodiment of the present utility model.

[0027] Figure 8 FIG. is an exploded view of a housing and an operating component according to an embodiment of the present utility model.

[0028] Figure 9 FIG. is an exploded view of a housing and an operating component according to an embodiment of the present utility model.

[0029] Figure 10 FIG. is a cross - sectional view of a heating base according to an embodiment of the present utility model.

[0030] Figure 11 is Figure 10 an enlarged view of part A of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0032] See Figures 1-11, this heating base includes a housing 1, a top cover 2, a base 9, a heating component 3, a circuit board assembly, and a heat insulation member. An electrical cavity 101 is provided on the housing 1. The housing 1 is cylindrical with open upper and lower ends. The top cover 2 is detachably and embeddedly installed on the top of the housing 1. The base 9 is integrally formed with the housing 1 or detachably installed at the bottom of the housing 1. The heating component 3 is preferably a heating plate and is installed on the top surface of the top cover 2, and the wiring terminal of the heating component 3 extends downward into the electrical cavity 101 to facilitate electrical connection with other electrical components. The circuit board assembly is arranged in the electrical cavity 101 and electrically connected to the heating component 3. The heat insulation member is arranged between the circuit board assembly and the heating component 3. Specifically, in this embodiment, the circuit board assembly includes a control component 4 and an operation component 6. The control component 4 includes a control board 401, which is fixedly installed on the bottom surface of the top cover 2 through a fastening component. The operation component 6 includes a control panel 601 and a wire component, which is snap-fitted on the side wall of the housing 1 through a snap component. The heat insulation member includes a first heat insulation component 5 and a second heat insulation component 7. The first heat insulation component 5 is installed between the control board 401 and the top cover 2 to block the heat transfer between the control component 4 and the heating component 3. The second heat insulation component 7 is installed on the operation component 6 and is located outside the control panel 601 to block the heat transfer between the operation component 6 and the heating component 3, reducing the probability of the control component 4 and the operation component 6 malfunctioning due to high temperature, extending the service life of the circuit board assembly, and ensuring the service life and performance of the heating base.

[0033] In addition, the heating base adopting the above technical solution can reduce the short-circuit problem caused by the failure of the circuit board assembly, ensuring the use safety of the heating base.

[0034] Furthermore, in this embodiment, the first heat insulation component 5 is provided with a first heat insulation cavity 501 and a first opening 502 communicating with the first heat insulation cavity 501. The first opening 502 faces downward of the heating base and is arranged on the end surface of the first heat insulation component 5 away from the heating component 3. The first heat insulation component 5 and the control component 4 are sequentially installed on the bottom surface of the top cover 2. After the first heat insulation component 5 is installed on the bottom surface of the top cover 2, the control board 401 is embedded in the first heat insulation cavity 501 through the first opening 502. Through the above technical solution, the first heat insulation component 5 is arranged outside the control component 4, which can be understood by those skilled in the art.

[0035] Further, a first mounting structure is provided between the first heat insulation member 5 and the top cover 2. Specifically, in this embodiment, the first mounting structure includes a first mounting hole 201 provided on the top cover 2, a first mounting through hole 503 provided on the first heat insulation member 5 and corresponding to the first mounting hole 201, and a first fastening member that cooperates with the first mounting hole 201. The number of the first mounting holes 201 is preferably one group, which is a screw hole and is provided on the bottom surface of the top cover 2. The number of the first mounting through holes 503 is preferably one group and is provided on the end surface of the first heat insulation member 5 close to the heating member 3. The central axis of the first mounting through hole 503 coincides with the axis of the first heat insulation member 5. The first fastening member is preferably a screw. Through the above technical solution, when the first fastening member passes through the first mounting through hole 503 and is threadedly connected to the first mounting hole 201, the first heat insulation member 5 is fixedly mounted on the top cover 2, which can be understood by those skilled in the art.

[0036] Further, a first positioning structure is provided between the first heat insulation member 5 and the top cover 2. Specifically, in this embodiment, the first positioning structure includes a first positioning post 202 provided on the top cover 2 and a first positioning hole 504 provided on the first heat insulation member 5 and corresponding to the first positioning post 202. The number of the first positioning posts 202 is preferably two groups and extends downward from the bottom surface of the top cover 2. The number of the first positioning holes 504 is preferably two groups and is provided through the end surface of the first heat insulation member 5 close to the heating member 3. Through the above technical solution, when the first heat insulation member 5 is mounted on the top cover 2, the first positioning post 202 extends into the first positioning hole 504, so that the first heat insulation member 5 is positioned and mounted on the top cover 2, which can be understood by those skilled in the art.

[0037] Further, in this embodiment, the second heat insulation member 7 is provided with a second heat insulation cavity 701, a second opening 702 communicating with the second heat insulation cavity 701, and a second wire opening 703 for the wire member to pass out of the second heat insulation cavity 701. The second opening 702 is provided on the end surface of the second heat insulation member 7 close to the control panel 601. The second wire opening 703 is provided on the side wall of the second heat insulation member 7 and faces downward of the heating base. The second wire opening 703 is formed by cutting the side wall of the second heat insulation member 7, so that the wire member passes through the second wire opening 703 and extends out of the second heat insulation cavity 701 and into the electrical cavity 101. When the second heat insulation member 7 is mounted on the operating member 6, the control panel 601 partially extends into the second heat insulation cavity 701 through the second opening 702. Through the above technical solution, the second heat insulation member 7 is arranged outside the operating member 6, which can be understood by those skilled in the art.

[0038] Furthermore, a second mounting structure is provided between the second heat insulation member 7 and the operating member 6. Specifically, in this embodiment, the second mounting structure includes a second mounting hole 602 provided on the operating member 6, a second mounting through hole 704 provided on the second heat insulation member 7 and corresponding to the second mounting hole 602, and a second fastening member that cooperates with the second mounting hole 602. The second mounting hole 602 is preferably a threaded hole, and its number is preferably two groups and is located on the left and right sides of the control panel 601. The number of the second mounting through holes 704 is preferably two groups and is provided on the left and right outer edges of the second heat insulation member 7. Through the above technical solution, when the second fastening member passes through the second mounting through hole 704 and is connected to the second mounting hole 602, the second heat insulation member 7 is mounted on the housing 1, which can be understood by those skilled in the art.

[0039] Furthermore, a second positioning structure is provided between the second heat insulation member 7 and the control panel 601. Specifically, in this embodiment, the second positioning structure includes a second positioning post 705 provided on the second heat insulation member 7 and a second positioning hole 6011 provided on the control panel 601. The number of the second positioning posts 705 is preferably two groups and extends upward from the bottom surface of the second heat insulation cavity 701. The number of the second positioning holes 6011 is preferably two groups and is provided through the second heat insulation member 7. Through the above technical solution, when the second heat insulation member 7 is mounted on the top cover 2, the second positioning post 705 extends into the second positioning hole 6011, positioning the second heat insulation member 7 on the control panel 601, which can be understood by those skilled in the art.

[0040] Further, the heating base further includes a protection switch device 8. Specifically, in this embodiment, the protection switch device 8 includes a movable member 801, a switch member 802 disposed at the bottom end of the movable member 801, and a reset member 803 for resetting the movable member 801 upward. The movable member 801 is made of a high-temperature resistant material to ensure its normal operation in a high-temperature environment. The movable member 801 includes a support portion 8011, a reset portion 8012, and a push rod portion 8013, and the support portion 8011, the reset portion 8012, and the push rod portion 8013 are integrally formed or separately provided. The support portion 8011 is located at the top of the movable member 801 and partially extends out of the support surface of the heating member 3. The heating member 3 is provided with a through hole corresponding to the support portion 8011 of the movable member 801. When the movable member 801 is in a stationary state, the support portion 8011 extends upward through the through hole out of the support surface of the heating member 3. When a heating container is placed on the support surface of the heating member 3 and the movable member 801 is pushed downward, the support portion 8011 is pressed and moves downward through the through hole and retracts into the support surface of the heating member 3. The reset portion 8012 is located in the middle of the movable member 801, and its radial dimension is larger than that of the push rod portion 8013. The reset member 803 is preferably a spring and is located between the reset portion 8012 and the top cover 2 and is sleeved outside the push rod portion 8013. When the pressure applied to the movable member 801 is greater than the elastic force of the reset member 803, the movable member 801 moves downward against the elastic force of the reset member 803. When the pressure applied to the movable member 801 is less than the elastic force of the reset member 803, the movable member 801 moves upward under the elastic force of the reset member 803. The switch member 802 is preferably a micro switch, which is made of a high-temperature resistant material to ensure its normal operation in a high-temperature environment. The push rod portion 8013 is located at the bottom of the movable member 801 and passes downward through the top cover 2 and abuts against the opening and closing end of the switch member 802. The top cover 2 is provided with a movable hole 203 for the push rod portion 8013 to pass downward through the top cover 2. The movable hole 203 is located on the central axis of the top cover 2. When the movable member 801 moves downward, the push rod portion 8013 moves downward through the movable hole 203 and opens the opening and closing end of the switch member 802, enabling the heating member 3 to be powered on. When the movable member 801 moves upward, the push rod portion 8013 moves upward through the movable hole 203 and closes the opening and closing end of the switch member 802, causing the heating member 3 to stop being powered on. Through the above technical solutions, the protection switch device 8 can prevent the heating base from dry burning in the absence of a heating container, improving the safety of the heating base, which can be understood by those skilled in the art.

[0041] Further, a guiding structure is provided between the top cover 2 and the movable member 801. Specifically, in this embodiment, the guiding structure includes guiding chutes 2031 provided on the movable holes 203, and guiding rails 8014 provided on the push rod portion 8013 and corresponding to the guiding chutes 2031. The number of the guiding chutes 2031 is preferably two and they are oppositely arranged on the movable holes 203. The guiding chutes 2031 extend along the height direction of the movable holes 203. The number of the guiding rails 8014 is preferably two and they are relatively arranged on the push rod portion 8013. The guiding rails 8014 extend along the length direction of the push rod portion 8013. When the movable member 801 is installed on the top cover 2, the guiding rails 8014 slide back and forth along the length direction of the guiding chutes 2031, so that the movable member 801 slides in a guiding manner along the height direction of the heating base. Through the above technical solution, by providing a double guiding structure, the movable member 801 can accurately move in the up and down direction of the heating base and will not get stuck. This can be understood by those skilled in the art.

[0042] Further, a third installation structure is provided between the outer shell 1 and the top cover 2. Specifically, in this embodiment, the third installation structure includes first buckling portions 102 provided on the outer shell 1, and second buckling portions 204 provided on the top cover 2 and corresponding to the first buckling portions 102. The number of the first buckling portions 102 is preferably two groups and they are relatively arranged on the inner side wall of the outer shell 1. The first buckling portions 102 are integrally formed with the outer shell 1. The number of the second buckling portions 204 is preferably two groups and they are relatively arranged on the outer side wall of the top cover 2. The second buckling portions 204 are integrally formed with the top cover 2. When the top cover 2 is placed on the outer shell 1, the first buckling portions 102 and the second buckling portions 204 are buckled with each other, so that the top cover 2 is installed on the outer shell 1. When the first buckling portions 102 and the second buckling portions 204 are separated from each other, the top cover 2 is detached from the outer shell 1. Through the above technical solution, it can be realized that the top cover 2 can be quickly installed on the outer shell 1, which can improve the assembly speed of the heating base to a certain extent and improve the production efficiency of the heating base. This can be understood by those skilled in the art.

[0043] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A heating base, characterized in that: The invention comprises a housing (1), a top cover (2), a heating component (3), a circuit board assembly, and a heat insulating member, wherein the housing (1) is provided with an electrical cavity (101), the top cover (2) is arranged on the top of the housing (1), the heating component (3) is arranged on the top of the top cover (2), the circuit board assembly is arranged in the electrical cavity (101) and is electrically connected to the heating component (3), and the heat insulating member is arranged between the circuit board assembly and the heating component (3) to block heat transfer between the circuit board assembly and the heating component (3).

2. The heating base according to claim 1, characterized in that: The circuit board assembly comprises a control component (4), the control component (4) comprises a control board (401) and is arranged on the bottom surface of the top cover (2), the heat insulating component comprises a first heat insulating component (5), the first heat insulating component (5) is arranged between the control board (401) and the top cover (2), the first heat insulating component (5) is provided with a first heat insulating cavity (501), and a first opening (502) communicating with the first heat insulating cavity (501), the first opening (502) is downwardly facing and is arranged on an end surface of the first heat insulating component (5) away from the heating component (3), and the control board (401) is embedded in the first heat insulating cavity (501) through the first opening (502).

3. The heating base according to claim 2, characterized in that: A first mounting structure is provided between the first heat insulating component (5) and the top cover (2), the first mounting structure comprising a first mounting hole (201) provided on the top cover (2), a first mounting through hole (503) provided on the first heat insulating component (5) and corresponding to the first mounting hole (201), and a first fastening component cooperating with the first mounting hole (201), the first mounting hole (201) being provided on the bottom surface of the top cover (2), the first mounting through hole (503) being provided on the end surface of the first heat insulating component (5) close to the heating component (3), and the first fastening component passing through the first mounting through hole (503) and connected to the first mounting hole (201), so that the first heat insulating component (5) is mounted on the top cover (2).

4. The heating base according to claim 2, characterized in that: A first positioning structure is provided between the first heat insulating component (5) and the top cover (2), the first positioning structure comprising a first positioning column (202) arranged on the top cover (2), and a first positioning hole (504) arranged on the first heat insulating component (5) and corresponding to the first positioning column (202), the first positioning column (202) extending downward from the bottom surface of the top cover (2), the first positioning hole (504) penetrating the end surface of the first heat insulating component (5) close to the heating component (3), the first heat insulating component (5) being installed on the top cover (2), the first positioning column (202) extending into the first positioning hole (504), so that the first heat insulating component (5) is positioned and installed on the top cover (2).

5. The heating base according to claim 1, characterized in that: The circuit board assembly comprises an operating component (6), the operating component (6) comprises a control panel (601) and a wire component and is buckled on a side wall of the housing (1); the heat insulating component comprises a second heat insulating component (7), the second heat insulating component (7) is mounted on the operating component (6) and is located outside the control panel (601); the second heat insulating component (7) is provided with a second heat insulating cavity (701), a second opening (702) communicating with the second heat insulating cavity (701), and a second wire opening (703) for the wire component to pass through the second heat insulating cavity (701); the second opening (702) is arranged on an end surface of the second heat insulating component (7) close to the control panel (601); the second wire opening (703) is arranged on a side wall of the second heat insulating component (7); the second heat insulating component (7) is mounted on the operating component (6); the control panel (601) partially extends into the second heat insulating cavity (701) through the second opening (702).

6. The heating base according to claim 5, characterized in that: A second mounting structure is provided between the second heat insulating component (7) and the operating component (6), the second mounting structure comprising a second mounting hole (602) provided on the operating component (6), a second mounting through hole (704) provided on the second heat insulating component (7) and corresponding to the second mounting hole (602), and a second fastening component cooperating with the second mounting hole (602), the second mounting hole (602) being located on the left side and / or the right side of the control panel (601), the second mounting through hole (704) being provided on the left side and / or the right side of the outer edge of the second heat insulating component (7), the second fastening component passing through the second mounting through hole (704) and being connected to the second mounting hole (602), so that the second heat insulating component (7) is mounted on the housing (1).

7. The heating base according to claim 5, characterized in that: A second positioning structure is provided between the second thermal insulation component (7) and the control panel (601), the second positioning structure comprising a second positioning column (705) provided on the second thermal insulation component (7), and a second positioning hole (6011) provided on the control panel (601), the second positioning column (705) extending upward from the bottom surface of the second thermal insulation cavity (701), the second positioning hole (6011) penetrating the second thermal insulation component (7), the second thermal insulation component (7) being mounted on the top cover (2), the second positioning column (705) extending into the second positioning hole (6011), so that the second thermal insulation component (7) is positioned on the control panel (601).

8. The heating base according to claim 1, characterized in that: The heating base further comprises a protection switch device (8), the protection switch device (8) comprising a movable component (801), a switch component (802) arranged at the bottom end of the movable component (801), and a reset component (803) used to reset the movable component (801) upwards; the movable component (801) comprises a support portion (8011), a reset portion (8012), and a push rod portion (8013); the support portion (8011) is located at the top of the movable component (801) and partially extends out of the support surface of the heating component (3); the reset portion (8012) is located in the middle of the movable component (801); the push rod portion (8013) is located at the bottom of the movable component (801) and passes through the top cover (2) downwards and abuts against the opening and closing end of the switch component (802); the reset portion (803) is located between the reset portion (8012) and the top cover (2) and is sleeved on the outside of the push rod portion (8013).

9. The heating base according to claim 8, characterized in that: The top cover (2) is provided with a movable hole (203) for the push rod portion (8013) to pass downward out of the top cover (2); the movable hole (203) is located on the central axis of the top cover (2); a guide structure is provided between the top cover (2) and the movable component (801); the guide structure comprises a guide groove (2031) provided on one of the movable hole (203) and the push rod portion (8013); and a guide rail (8014) provided on the other of the movable hole (203) and the push rod portion (8013) and corresponding to the guide groove (2031); the guide groove (2031) and the guide rail (8014) are extended along the height direction of the heating base; the guide rail (8014) slides back and forth along the length direction of the guide groove (2031) so that the movable component (801) is guided to slide along the height direction of the heating base.

10. The heating base according to claim 1, characterized in that: The top cover (2) is detachably mounted on the outer shell (1); a third mounting structure is provided between the outer shell (1) and the top cover (2); the third mounting structure comprises a first buckle (102) provided on the outer shell (1); and a second buckle (204) provided on the top cover (2) and corresponding to the first buckle (102); the first buckle (102) is provided on the inner wall of the outer shell (1); the second buckle (204) is provided on the outer wall of the top cover (2); the first buckle (102) and the second buckle (204) are buckled with each other so that the top cover (2) is mounted on the outer shell (1); the first buckle (102) and the second buckle (204) are separated from each other so that the top cover (2) is removed from the outer shell (1).

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