Automatic power-off protection structure for kettle overheating

Abstract

The utility model relates to electric kettle technical field, especially disclose a kind of kettle overheating automatic power-off protection structure, comprising: base, the top surface of base is adaptively installed with separable electric kettle, installation cavity is preformed in base;Power-off control component is equipped in installation cavity, the top surface of base is also provided with square groove, square groove is adaptively equipped with card and has the object box, power-off control component is electrically connected with electric kettle by wire, base is also equipped with the relay electrically connected with power-off control component, when detecting the kettle overheating of electric kettle, power-off control component triggers relay action, to disconnect the power supply circuit of electric kettle, normally work, electric kettle is adaptively placed on the top surface of base, its bottom conductive end is connected with the circuit in base, temperature probe is supported by the telescopic support of support adjusting unit, spring rod elastic support, closely adhere to kettle bottom, real-time acquisition temperature data and transmission to power-off control component.

Description

Technical Field

[0001] This utility model relates to the field of electric kettle technology, and in particular to an automatic power-off protection structure for kettle body overheating. Background Technology

[0002] An electric kettle is a household appliance that uses electricity to heat water to boiling. It uses the principle that electric current generates heat energy by passing through resistance, converting electrical energy into heat energy to quickly heat the water to the boiling point, and has an automatic power-off protection function.

[0003] Electric kettles, widely used in modern homes and offices, have become a core device for meeting daily hot water needs due to their advantages of rapid heating and ease of use. However, the existing automatic overheat protection mechanisms of electric kettles still have many areas for improvement: In some products, the temperature sensing component does not fit tightly enough against the bottom of the kettle body, making it susceptible to errors in temperature acquisition due to placement deviations and slight shaking. This results in an inaccurate perception of the kettle's true temperature. Furthermore, the power-off control mechanism suffers from unsmooth transmission, delays in overheat signal transmission and power-off response, and difficulty in quickly cutting off the power supply circuit. In some products, manual operation is required to reset the power supply after overheat protection is triggered, compromising usability. Additionally, the durability of the temperature sensing component's support structure and transmission parts needs improvement; long-term use can lead to misalignment and wear, causing the protection function to fail. These defects affect the safety and reliability of the electric kettle and reduce the user experience. Therefore, we propose an automatic power-off protection structure for kettle overheating. Utility Model Content

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this utility model solves the following problems: the temperature measuring components of some existing electric kettles do not fit tightly against the bottom of the kettle body, making them susceptible to temperature acquisition errors due to placement deviations and slight shaking; the power-off control mechanism has poor transmission connection, resulting in delays in overheat signal transmission and power-off response; manual reset is required after overheat protection is triggered, which is inconvenient; and the temperature measuring support structure and transmission components have poor durability, easily shifting and wearing down with long-term use, causing the protection function to fail. These issues affect both safety and reliability, and also reduce the user experience.

[0005] Technical solution To achieve the above objectives, this utility model provides the following technical solution: An automatic power-off protection structure for overheating kettle body, comprising: A base, the top surface of which is adapted to install a detachable electric kettle, and the base has a pre-set mounting cavity; The mounting cavity is equipped with a power-off control component, and the top surface of the base is also provided with a square groove, in which a storage box is fitted. The power-off control component is electrically connected to the electric kettle via a wire. The base is also equipped with a relay electrically connected to the power-off control component. When the kettle body is detected to be overheated, the power-off control component triggers the relay to disconnect the power supply circuit of the electric kettle.

[0006] Preferably, the power-off control component includes a temperature measuring unit, which is located at the bottom of the electric kettle and is used to collect the temperature of the kettle body. An execution unit is connected to a relay and is used to switch the circuit on and off in response to the relay's action. A support adjustment unit is adapted and connected to the temperature measuring unit and the execution unit respectively, and is used to provide elastic support for the temperature measuring unit. The aforementioned temperature measuring unit, execution unit, and support adjustment unit are all assembled inside the mounting cavity of the base.

[0007] Preferably, the temperature measuring unit includes a temperature measuring probe; The support adjustment unit includes a telescopic bracket, a spring rod, and a gasket. The telescopic bracket is vertically fixed to the bottom wall of the mounting cavity. The temperature probe is inserted inside the telescopic bracket, with its top end corresponding to the bottom of the electric kettle. The spring rod is sleeved on the outside of the telescopic bracket, and the gasket is clamped between the top of the spring rod and the side wall of the temperature probe.

[0008] Preferably, the execution unit includes a fixed block, a mounting base, a rotating rod, a transverse connecting plate, a rotating plate, a connecting rod, and a return spring; The fixing block and the mounting base are both fixed to the bottom wall of the mounting cavity, and the lower end of the rotating rod is hinged to the top of the fixing block. One end of the transverse connecting plate is fixed to the upper end of the rotating rod, and the other end is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the side wall of the rotating plate. One end of the reset spring is connected to the bottom surface of the transverse connecting plate, and the other end is connected to the top of the mounting base.

[0009] Preferably, the support adjustment unit further includes a circular box, which is fixed to the bottom wall of the mounting cavity and has an open top, and the lower end of the spring rod is adapted to be embedded inside the circular box.

[0010] Preferably, the relay is fixed to the side wall of the storage box facing the mounting cavity, one end of the wire is electrically connected to the relay, and the other end passes through the side wall of the storage box and the wall of the mounting cavity, and is electrically connected to the conductive end at the bottom of the electric kettle.

[0011] Preferably, the rotating plate is connected to the moving contact arm of the relay via a transmission; when the relay is activated, the moving contact arm drives the rotating plate to rotate, which in turn drives the transverse connecting plate and the rotating rod to rotate synchronously via the connecting rod.

[0012] Preferably, the reset spring is a tension spring; when the relay is de-energized and reset, the rebound force of the reset spring drives the transverse connecting plate to reset, so that the rotating rod, connecting rod, and rotating plate return to their initial positions.

[0013] Beneficial effects This utility model, through the close fit design of the temperature probe to the bottom of the kettle body, combined with the linkage mechanism of the power-off control component and the relay, can accurately collect the temperature of the kettle body in real time. When the temperature exceeds the safety threshold, it can quickly trigger the power-off action to completely cut off the power supply circuit, effectively avoiding safety hazards such as fire and burns caused by overheating of the kettle body, and significantly improving the safety of electric kettle use. The support adjustment unit adopts a combination structure of telescopic bracket, spring rod and pad. With the elastic force of the spring rod, it always provides stable support for the temperature probe, ensuring that it can still fit tightly against the bottom of the kettle when the electric kettle is placed incorrectly or shaken slightly, resulting in small temperature acquisition error. At the same time, the transmission connection design between the relay and the actuator unit makes the overheat signal transmission and power-off action smooth and fast, further ensuring the reliability of the protection function. The tension-type reset spring in the actuator can quickly restore the transmission components such as the horizontal connecting plate and rotating rod to their initial position through the rebound force when the overheating state is released and the relay is de-energized and reset. This automatically connects the power supply circuit, allowing the electric kettle to resume normal use without manual operation by the user, simplifying the operation process and improving ease of use. The square groove on the top of the base fits and snaps into the storage box. The relay is fixed to the side wall of the storage box. The wiring is sealed and protected, which not only ensures the stability of the circuit connection, but also makes the internal components neat and clear. All components are assembled in the mounting cavity of the base or the storage box, which is convenient for disassembly and assembly, and facilitates later inspection, maintenance and component replacement, reducing the cost of use and maintenance. The circular box supporting the adjustment unit provides a reliable bottom limit for the spring rod, preventing it from shifting or deforming and ensuring the stable fit of the temperature probe. The hinge structure of the actuator and the elastic cooperation of the return spring reduce rigid wear between components and improve the durability of the transmission mechanism. The overall structural design balances functionality and stability, effectively extending the product's service life. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a diagram showing the internal structure of the electric kettle according to this utility model; Figure 3 This is a structural diagram of the rotating rod, the transverse connecting plate, and the cooperation structure between the rotating plate and the connecting rod of this utility model; Figure 4 This is a structural diagram showing the combination of the spring rod, washer, and telescopic bracket of this utility model.

[0016] Legend: 1. Base; 2. Electric kettle; 3. Temperature probe; 4. Storage box; 5. Relay; 6. Wire; 7. Square slot; 8. Fixing block; 9. Mounting base; 10. Rotating rod; 11. Horizontal connecting plate; 12. Rotating plate; 13. Connecting rod; 14. Return spring; 15. Circular box; 16. Spring rod; 17. Washer; 18. Telescopic bracket. Detailed Implementation

[0017] Example 1: Please see Figure 1 - Figure 4 As shown, this embodiment provides an automatic power-off protection structure for overheating of the kettle body.

[0018] include: The base 1 has a detachable electric kettle 2 mounted on its top surface. A mounting cavity is pre-set inside the base 1. A power-off control component is located within the mounting cavity. A square groove 7 is also provided on the top surface of the base 1, within which a storage box 4 is fitted. The power-off control component is electrically connected to the electric kettle 2 via a wire 6. A relay 5, also electrically connected to the power-off control component, is located inside the base 1. When overheating of the kettle 2 is detected, the power-off control component triggers the relay 5 to disconnect the power supply circuit of the kettle 2. During normal operation, the electric kettle 2 is placed on the top surface of the base 1, with its bottom conductive end connected to the circuit inside the base 1. The temperature probe 3 is elastically supported by the telescopic bracket 18 and spring rod 16 of the support adjustment unit, tightly fitting the bottom of the kettle body, collecting temperature data in real time and transmitting it to the power-off control component. When the kettle body temperature exceeds a safe threshold... When the power-off control component receives the overheat signal from the temperature measuring unit, it triggers the relay 5 to operate. The moving contact arm of the relay 5 then drives the rotating plate 12 of the execution unit to rotate. The rotating plate 12 pulls the transverse connecting plate 11 through the connecting rod 13, causing the transverse connecting plate 11 to drive the rotating rod 10 to deflect around the hinge of the fixed block 8, ultimately cutting off the power supply circuit of the electric kettle 2 and realizing overheat power-off protection. After the kettle body temperature drops and the overheating state is relieved, the relay 5 is de-energized and resets. The reset spring 14 in the execution unit, which is in a stretched state, releases its rebound force and pulls the transverse connecting plate 11 to reset. Then, through the connecting rod 13 and the rotating plate 12, it drives each transmission component to return to its initial position, preparing for subsequent power-on operation. The circular box 15 supporting the adjustment unit always acts as a bottom limit for the spring rod 16, ensuring the stable contact effect of the temperature measuring probe 3.

[0019] Example 2: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0020] The power-off control component includes: a temperature measuring unit, which is located at the bottom of the electric kettle 2 and is used to collect the temperature of the kettle; an execution unit, which is connected to the relay 5 and is used to switch the circuit on and off in response to the action of the relay 5; and a support adjustment unit, which is adapted to and connected to the temperature measuring unit and the execution unit respectively, and is used to provide elastic support for the temperature measuring unit. The temperature measuring unit, the execution unit, and the support adjustment unit are all assembled in the mounting cavity of the base 1. The temperature measuring unit includes a temperature measuring probe 3, which is closely attached to the bottom of the electric kettle 2 and can accurately sense the temperature change of the kettle. The execution unit is composed of a rotating plate 12, a connecting rod 13, a horizontal connecting plate 11, a rotating rod 10, a fixing block 8, and a return spring 14. The components cooperate with each other and can quickly cut off or restore the power supply circuit when the relay 5 is activated. The telescopic bracket 18 and the spring rod 16 of the support adjustment unit cooperate with each other and can be elastically adjusted according to the actual situation of the kettle to ensure that the temperature measuring probe 3 is always stably attached to the bottom of the kettle, and the circular box 15 plays a good bottom limiting role for the spring rod 16.

[0021] Example 3: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0022] The temperature measuring unit includes a temperature probe 3; the support and adjustment unit includes a telescopic bracket 18, a spring rod 16, and a gasket 17. The telescopic bracket 18 is vertically fixed to the bottom wall of the mounting cavity. The temperature probe 3 passes through the telescopic bracket 18, with its top end corresponding to the bottom of the electric kettle 2. The spring rod 16 is sleeved on the outside of the telescopic bracket 18, and the gasket 17 is sandwiched between the top end of the spring rod 16 and the side wall of the temperature probe 3. Under the elastic support of the telescopic bracket 18, the spring rod 16 applies stable pressure to the temperature probe 3 through the gasket 17, ensuring that the temperature probe 3 fits tightly against the bottom of the electric kettle 2. Even if the electric kettle 2 is not placed flat or is shaken by external force, the temperature probe 3 can maintain good contact with the bottom of the kettle, thereby accurately sensing the temperature change of the kettle and providing reliable temperature data support for the overheat automatic power-off protection function.

[0023] Example 4: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0024] The execution unit includes a fixed block 8, a mounting base 9, a rotating rod 10, a transverse connecting plate 11, a rotating plate 12, a connecting rod 13, and a return spring 14. The fixed block 8 and mounting base 9 are both fixed to the bottom wall of the mounting cavity. The lower end of the rotating rod 10 is hinged to the top of the fixed block 8. One end of the transverse connecting plate 11 is fixed to the upper end of the rotating rod 10, and the other end is hinged to one end of the connecting rod 13. The other end of the connecting rod 13 is hinged to the side wall of the rotating plate 12. One end of the return spring 14 is connected to the bottom surface of the transverse connecting plate 11, and the other end is connected to the top of the mounting base 9. When the temperature inside the electric kettle 2 reaches the preset temperature... When the overheat threshold is set, the execution unit is triggered. The rotating rod 10 rotates around the top of the fixed block 8 under the associated action, driving the transverse connecting plate 11 to move. The transverse connecting plate 11 pulls the rotating plate 12 to rotate through the connecting rod 13. The reset spring 14 is stretched or compressed during the movement of the transverse connecting plate 11, resulting in elastic deformation. After the power-off protection action is completed, the reset spring 14 uses its own elastic restoring force to restore the rotating rod 10, transverse connecting plate 11, rotating plate 12 and other components to their initial positions, preparing for the next automatic power-off protection for overheating.

[0025] Example 5: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0026] The support adjustment unit also includes a circular box 15, which is fixed to the bottom wall of the mounting cavity and has an open top. The lower end of the spring rod 16 is fitted into the inside of the circular box 15, and the upper end of the spring rod 16 passes through the top opening of the circular box 15 and extends to the outside. The spring rod 16 can move up and down inside the circular box 15. The upper end of the spring rod 16 abuts against the bottom surface of the rotating plate 12. When the rotating plate 12 rotates, it will press the spring rod 16 to move downward inside the circular box 15. When the power-off protection action is completed and the rotating plate 12 returns to its initial position, the spring rod 16 moves upward under its own elasticity, which helps the rotating plate 12 to better return to its initial state, ensuring the stability and reliability of the entire overheat automatic power-off protection structure.

[0027] Example 6: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0028] The relay 5 is fixed to the side wall of the storage box 4 facing the mounting cavity. One end of the wire 6 is electrically connected to the relay 5, and the other end passes through the side wall of the storage box 4 and the wall of the mounting cavity, and is electrically connected to the conductive end at the bottom of the electric kettle 2. When the internal temperature of the electric kettle 2 is too high and reaches the preset threshold, the relay 5 quickly cuts off the current transmission of the wire 6, thereby stopping the heating work of the electric kettle 2 in time and preventing safety accidents caused by overheating. The wire 6 is made of high temperature resistant and good insulation material to ensure that it can safely and stably transmit current in high temperature environment. In addition, a sealed protective sleeve is set at the position where it passes through the side wall of the storage box 4 and the wall of the mounting cavity to prevent moisture or other impurities from entering and affecting the normal operation of the circuit.

[0029] Example 7: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0030] The rotating plate 12 is connected to the moving contact arm of the relay 5. When the relay 5 is activated, the moving contact arm drives the rotating plate 12 to rotate, which in turn drives the transverse connecting plate 11 and the rotating rod 10 to rotate synchronously through the connecting rod 13. When the rotating rod 10 rotates, it drives the insulating baffle on it to rotate. The insulating baffle rotates until it separates from the heating circuit contact corresponding to the conductive end at the bottom of the electric kettle 2, thereby cutting off the heating circuit of the electric kettle 2 and realizing the automatic power-off protection function.

[0031] Example 8: This embodiment provides an automatic power-off protection structure for overheating of the kettle body. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0032] Among them, the reset spring 14 is a tension spring; when the relay 5 is de-energized and reset, the rebound force of the reset spring 14 drives the transverse connecting plate 11 to reset, so that the rotating rod 10, the connecting rod 13, and the rotating plate 12 return to their initial positions. At the same time, the insulating baffle also rotates with the rotating rod 10 to the position of contacting the heating circuit contacts, restoring the normal heating circuit connection of the electric kettle 2, so that the electric kettle 2 can continue to heat when the temperature is normal, ensuring its normal use function.

[0033] Working principle: During normal operation, the electric kettle 2 is placed on the top surface of the base 1, and its bottom conductive end is connected to the circuit inside the base 1. The temperature probe 3 is elastically supported by the telescopic bracket 18 and spring rod 16 of the support adjustment unit, and fits tightly against the bottom of the kettle body to collect temperature data in real time and transmit it to the power failure control component. When the temperature of the kettle exceeds the safety threshold, the power-off control component receives the overheat signal from the temperature measuring unit and triggers the relay 5 to operate. The moving contact arm of the relay 5 then drives the rotating plate 12 of the execution unit to rotate. The rotating plate 12 pulls the transverse connecting plate 11 through the connecting rod 13, causing the transverse connecting plate 11 to drive the rotating rod 10 to deflect around the hinge of the fixed block 8, ultimately cutting off the power supply circuit of the electric kettle 2 and realizing overheat power-off protection. After the temperature of the kettle body drops and the overheating state is relieved, the relay 5 is de-energized and reset. The reset spring 14 in the execution unit, which is in a stretched state, releases its rebound force and pulls the horizontal connecting plate 11 to reset. Then, through the connecting rod 13 and the rotating plate 12, it drives each transmission component to return to its initial position, preparing for subsequent power-on operation. The circular box 15 supporting the adjustment unit always acts as a bottom limit for the spring rod 16, ensuring the stable contact effect of the temperature probe 3.

[0034] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automatic power-off protection structure for overheating kettle body, characterized in that, include: A base (1) is fitted with a detachable electric kettle (2) on its top surface, and an installation cavity is pre-set inside the base (1). The mounting cavity is equipped with a power-off control component, and the top surface of the base (1) is also provided with a square groove (7), in which a storage box (4) is fitted. The power-off control component is electrically connected to the electric kettle (2) via a wire (6). The base (1) is also equipped with a relay (5) electrically connected to the power-off control component. When the kettle body of the electric kettle (2) is detected to be overheated, the power-off control component triggers the relay (5) to disconnect the power supply circuit of the electric kettle (2).

2. The automatic power-off protection structure for overheating of a kettle body according to claim 1, characterized in that: The power-off control component includes: a temperature measuring unit, which is set at the bottom of the electric kettle (2) and is used to collect the temperature of the kettle body; An execution unit is connected to a relay (5) for switching the circuit on and off in response to the action of the relay (5); A support adjustment unit is adapted and connected to the temperature measuring unit and the execution unit respectively, and is used to provide elastic support for the temperature measuring unit. The temperature measuring unit, the execution unit, and the support adjustment unit are all assembled in the mounting cavity of the base (1).

3. The automatic power-off protection structure for overheating of the kettle body according to claim 2, characterized in that: The temperature measuring unit includes a temperature measuring probe (3); The support adjustment unit includes a telescopic bracket (18), a spring rod (16) and a pad (17). The telescopic bracket (18) is vertically fixed to the bottom wall of the mounting cavity. The temperature probe (3) is inserted inside the telescopic bracket (18) and its top end corresponds to the bottom of the electric kettle (2). The spring rod (16) is sleeved on the outside of the telescopic bracket (18), and the gasket (17) is sandwiched between the top of the spring rod (16) and the side wall of the temperature probe (3).

4. The automatic power-off protection structure for overheating of the kettle body according to claim 2, characterized in that: The execution unit includes a fixed block (8), a mounting base (9), a rotating rod (10), a transverse connecting plate (11), a rotating plate (12), a connecting rod (13), and a return spring (14). The fixed block (8) and the mounting base (9) are both fixed to the bottom wall of the mounting cavity, and the lower end of the rotating rod (10) is hinged to the top of the fixed block (8); One end of the transverse connecting plate (11) is fixed to the upper end of the rotating rod (10), and the other end is hinged to one end of the connecting rod (13). The other end of the connecting rod (13) is hinged to the side wall of the rotating plate (12). One end of the reset spring (14) is connected to the bottom surface of the transverse connecting plate (11), and the other end is connected to the top of the mounting base (9).

5. The automatic power-off protection structure for overheating of the kettle body according to claim 3, characterized in that: The support adjustment unit also includes a circular box (15), which is fixed to the bottom wall of the mounting cavity and has an open top. The lower end of the spring rod (16) is fitted into the inside of the circular box (15).

6. The automatic power-off protection structure for overheating of a kettle body according to claim 1, characterized in that: The relay (5) is fixed to the side wall of the storage box (4) facing the mounting cavity. One end of the wire (6) is electrically connected to the relay (5), and the other end passes through the side wall of the storage box (4) and the wall of the mounting cavity, and is electrically connected to the bottom conductive end of the electric kettle (2).

7. The automatic power-off protection structure for overheating of the kettle body according to claim 4, characterized in that: The rotating plate (12) is connected to the moving contact arm of the relay (5) via a transmission. When the relay (5) is activated, the moving contact arm drives the rotating plate (12) to rotate, which in turn drives the transverse connecting plate (11) and the rotating rod (10) to rotate synchronously via the connecting rod (13).

8. The automatic power-off protection structure for overheating of a kettle body according to claim 4, characterized in that: The reset spring (14) is a tension spring; when the relay (5) is de-energized and reset, the rebound force of the reset spring (14) drives the transverse connecting plate (11) to reset, so that the rotating rod (10), the connecting rod (13), and the rotating plate (12) return to their initial positions.

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