A cover opening protection structure for a kitchen appliance

Abstract

The utility model discloses a kind of uncover protection structure for kitchen appliance, including shell and control module, the shell one side is provided with hinged seat, hinged seat is hinged with temperature sensing component, the front end of temperature sensing component is provided with temperature sensing probe, temperature sensing probe is electrically connected with control module, control module can control kitchen appliance to stop working when temperature sensing probe signal cannot be detected, the lower part of temperature sensing component two sides is provided with pivot, dry Reed tube is fixed in accommodating cavity, dry Reed tube is connected in series with temperature sensing probe, dry Reed tube is far from magnetic component when temperature sensing component is in opening state, dry Reed tube is in initial disconnect state at this time, control module cannot detect temperature sensing probe at this time, the main function of control kitchen appliance stops, prevent accident, when temperature sensing component is in closed state, dry Reed tube is close to magnetic component, dry Reed tube is in closed state under the magnetic attraction of magnetic component at this time, kitchen appliance can normally heat.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically to a protective structure for opening the lid of kitchen appliances. Background Technology

[0002] Kitchen appliances, including rice cookers and kettles, require exceptional safety, especially the ability to stop operation when the lid is open, a crucial function for ensuring user safety and preventing accidents. Currently, a simple solution exists for cutting off power when the cooking appliance is opened: a reed switch is directly connected in series in the power supply circuit of the appliance's drive mechanism. In this solution, the reed switch is typically mounted on the cooker body, while a permanent magnet is installed at the connection point to the lid. When the lid is closed, the magnet approaches the reed switch, magnetizing its contacts and closing the main circuit, allowing the appliance to operate normally. When the lid is opened, the magnet moves away, the reed switch contacts demagnetize and open, directly cutting off the current to the entire main power supply circuit, thus achieving a forced power-off.

[0003] However, in-depth research by the inventors revealed the following inherent defects and safety hazards in this traditional mechanical series power-off scheme: 1. Abrupt control: This scheme directly cuts off the high-current load the moment the cover is opened, which easily generates an electric arc between the reed switch contacts. Over time, this will exacerbate the electro-corrosion and oxidation of the contacts, further increasing the probability of the reed switch itself failing. 2. Poor functional expandability: Because it is a purely mechanical power-off method, it cannot intelligently interact with the main control system, and it cannot perform necessary follow-up operations before executing the power-off command, such as starting the cooling fan for delayed heat dissipation, thus limiting further improvements in product safety and intelligence. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a protective structure for opening kitchen appliances.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: A cover protection structure for kitchen appliances, comprising a housing and a control module. A hinge seat is provided on one side of the housing, and pivot openings are provided on both sides of the upper part of the hinge seat. A temperature sensing component is hinged to the hinge seat, and a temperature probe is provided at the front end of the temperature sensing component. The temperature probe is electrically connected to the control module and is used to feed back a temperature signal to the control module. The control module can control the kitchen appliance to stop working when it cannot detect the temperature probe signal. A pivot is provided on both sides of the lower part of the temperature sensing component, and the pivot is placed in the pivot opening. A receiving cavity is provided inside the pivot, and a reed switch is fixed in the receiving cavity. The reed switch is connected in series with the temperature probe. When the temperature sensing component rotates, the reed switch will rotate inside the pivot. A magnetic component is provided on the hinge seat below the pivot. When the temperature sensing component is in the open state, the reed switch moves away from the magnetic component. When the temperature sensing component is in the closed state, the reed switch moves closer to the magnetic component.

[0006] Furthermore, the magnetic component includes a magnet and a silicone housing, the silicone housing having an installation opening into which the magnet is inserted.

[0007] Furthermore, the top surface of the silicone shell is an arc surface, and the arc surface of the silicone shell contacts the temperature sensing component. A damping groove is provided on the arc surface along the rotation direction of the temperature sensing component.

[0008] Furthermore, the silicone housing has mounting grooves on both sides, the hinge base includes a front component and a rear component, and a mounting port is provided between the front component and the rear component. The silicone housing is snapped onto the mounting port through the mounting grooves, and a support portion is provided on the rear component below the mounting port to contact the silicone housing.

[0009] Furthermore, a wiring cavity is provided inside the hinge seat on the outer side of the shaft opening.

[0010] Furthermore, the control module is mounted on the housing, which also has a display screen and several operation buttons.

[0011] In one embodiment, the kitchen appliance is a rice cooker, which also includes a top cover and an inner pot. The top surface of the top cover protrudes upward to form a temperature sensing port. A sealing ring is fitted onto the temperature sensing port, and a cross groove is provided in the middle of the sealing ring. When the temperature sensing component is in the closed state, the temperature sensing probe passes through the cross groove and is inserted into the temperature sensing port.

[0012] In other options, the kitchen appliance could also be an electric kettle or a soy milk maker.

[0013] The beneficial effects of this utility model are as follows: the temperature sensor is connected in series with the reed switch. When the temperature sensor is in the open state, the reed switch moves away from the magnetic component, causing the temperature sensor to disconnect from the control module. The control module can control the kitchen appliance to stop working when it cannot detect the temperature sensor signal, so as to prevent the kitchen appliance from continuing to work in the open state and causing accidents. The above decision to stop working is executed by the control module, rather than mechanically cutting off, allowing the system to execute a series of optimized safety procedures after the lid is opened. The digital tube display can continue to display the time, temperature or status prompts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of Example 1.

[0015] Figure 2 This is a cross-sectional view of the closed state in Example 1.

[0016] Figure 3 This is a schematic diagram of a temperature sensing probe.

[0017] Figure 4 This is a schematic diagram of the magnetic component.

[0018] Figure 5 This is a schematic diagram of the hinge seat in Example 1.

[0019] In the diagram: 1. Housing; 2. Hinge base; 21. Front assembly; 22. Rear assembly; 221. Support part; 23. Mounting port; 24. Shaft port; 25. Wiring cavity; 3. Temperature sensing component; 31. Temperature probe; 32. Shaft; 33. Receiving cavity; 4. Control module; 41. Display screen; 42. Operation button; 5. Reed switch; 6. Magnetic component; 61. Magnet; 52. Silicone housing; 621. Mounting groove; 622. Curved surface; 623. Damping groove; 7. Top cover; 71. Temperature sensing tube port; 8. Sealing ring; 81. Cross groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Example 1: A protective structure for opening the lid of a kitchen appliance includes a housing 1 and a control module 4. A hinge seat 2 is provided on one side of the housing 1, and pivot openings 24 are provided on both sides of the upper part of the hinge seat 2. A temperature sensing component 3 is hinged to the hinge seat 2, and a temperature probe 31 is provided at the front end of the temperature sensing component 3. The temperature probe 31 is electrically connected to the control module 4. The temperature probe 31 is not located in the power supply circuit of the control module 4. The temperature probe 31 is used to feed back a temperature signal to the control module 4. The control module 4 can control the kitchen appliance to stop working when it cannot detect a signal from the temperature probe 31. "Stop working" means that the main function of the kitchen appliance stops, without affecting its auxiliary functions such as display and heat dissipation. In this example, the kitchen appliance is a rice cooker, which contains a heating element. "Stop working" means that the heating element stops heating. A pivot 32 is provided on both sides of the lower part of the temperature sensing component 3. The pivot 32 is inserted into the pivot openings 24, and the pivot 32 has a hollow cavity 33 inside. A reed switch 5 is fixed inside the receiving cavity 32. The reed switch 5 is connected in series with the temperature sensor 31. The control module 4 is used to monitor the continuity of the circuit between the temperature sensor 31 and the reed switch 5. Regardless of whether the circuit is disconnected due to opening the lid or due to component failure, the control module 4 determines it to be an abnormal state and executes the protection program. When the reed switch 5 is disconnected, the control module 4 cannot detect the temperature sensor 31. When the temperature sensing component 3 rotates, the reed switch 5 will rotate inside the rotating shaft 32. A magnetic component 6 is provided on the hinge seat 2 below the rotating shaft 32. When the temperature sensing component 3 is in the open state, the reed switch 5 moves away from the magnetic component 6. At this time, the reed switch 5 is in the initial open state. At this time, the control module cannot detect the temperature sensor 31 and the rice cooker is prohibited from heating. When the temperature sensing component 3 is in the closed state (the lid is closed normally and the temperature sensing component is located on the top cover), the reed switch 5 is close to the magnetic component 6. At this time, under the magnetic attraction of the magnetic component 6, the reed switch 5 is in the closed state and heating can be performed normally.

[0022] In this embodiment, the rice cooker also includes a top cover 7 and an inner pot. The top surface of the top cover 7 protrudes upward to form a temperature sensing port 71. A sealing ring 8 is fitted on the temperature sensing port 71. A cross groove 81 is provided in the middle of the sealing ring 8. When the temperature sensing component 3 is in the closed state, the temperature sensing probe 31 passes through the cross groove 81 and is inserted into the temperature sensing port 71. At this time, the front part of the temperature sensing component 3 abuts against the sealing ring 8.

[0023] Furthermore, the magnetic component 6 includes a magnet 61 and a silicone housing 62, the silicone housing 62 being provided with an installation port, into which the magnet 61 is inserted.

[0024] Furthermore, the top surface of the silicone housing 62 is an arc surface 622, which contacts the temperature sensing component 3. A damping groove 623 is provided on the arc surface 622 along the rotation direction of the temperature sensing component. The silicone housing 62 can increase the damping when the temperature sensing component 3 rotates, prevent the temperature sensing component 3 from rotating too quickly, and improve the user experience.

[0025] Furthermore, the silicone housing 62 is provided with mounting grooves 621 on both sides, and the hinge seat 2 includes a front component 21 and a rear component 22. A mounting port 23 is provided between the front component 21 and the rear component 22. The silicone housing 62 is snapped onto the mounting port 23 through the mounting grooves 621. A support portion 221 is also provided on the rear component 22 below the mounting port 23 to contact the silicone housing 62, thereby fixing the magnetic component 6.

[0026] Furthermore, a wiring cavity 25 is provided in the hinge seat outside the shaft opening 24 to facilitate wiring.

[0027] Furthermore, the control module 4 is mounted on the housing 1, which is also equipped with a display screen 41 and several operation buttons 42. When the rice cooker stops working, the status of the rice cooker can be displayed on the display screen 41.

[0028] Example 2: Based on the above example, a variation is made. In this example, the kitchen appliance is an electric kettle, which includes a heating element. When the kitchen appliance stops working, in this example, it means that the heating element stops heating.

[0029] Example 3: Based on the above examples, a variation is made. In this example, the kitchen appliance is a soymilk maker, which also includes a heating element and a rotating blade. When the kitchen appliance stops working, in this example, the heating element stops heating and the rotating blade stops rotating.

[0030] Example 4: In another embodiment, the temperature sensing component can also be a top cover with a temperature sensing probe.

[0031] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cover protection structure for kitchen appliances, comprising a housing and a control module, characterized in that... A hinge seat is provided on one side of the housing. Rotating shaft openings are provided on both sides of the upper part of the hinge seat. A temperature sensing component is hinged to the hinge seat. A temperature sensing probe is provided at the front end of the temperature sensing component. The temperature sensing probe is electrically connected to the control module and is used to feed back a temperature signal to the control module. The control module can control the kitchen appliance to stop working when it cannot detect a temperature probe signal. Rotating shafts are provided on both sides of the lower part of the temperature sensing component. The rotating shafts are inserted into the rotating shaft openings. A receiving cavity is provided inside the hollow rotating shaft. A reed switch is fixed in the receiving cavity. The reed switch is connected in series with the temperature sensing probe. When the temperature sensing component rotates, the reed switch rotates within the rotating shaft. A magnetic component is provided on the hinge seat below the rotating shaft. When the temperature sensing component is in the open state, the reed switch moves away from the magnetic component. When the temperature sensing component is in the closed state, the reed switch moves closer to the magnetic component.

2. The opening protection structure for kitchen appliances according to claim 1, characterized in that... The magnetic component includes a magnet and a silicone housing. The silicone housing has an installation opening, into which the magnet is inserted.

3. The opening protection structure for kitchen appliances according to claim 2, characterized in that... The top surface of the silicone shell is an arc surface, which contacts the temperature sensing component. A damping groove is provided on the arc surface along the rotation direction of the temperature sensing component.

4. The opening protection structure for kitchen appliances according to claim 2, characterized in that... The silicone housing has mounting grooves on both sides. The hinge base includes a front component and a rear component. A mounting port is provided between the front component and the rear component. The silicone housing is snapped onto the mounting port through the mounting groove. A support portion is also provided on the rear component below the mounting port, which contacts the silicone housing.

5. The opening protection structure for kitchen appliances according to claim 1, characterized in that... A wiring cavity is provided inside the hinge seat on the outer side of the shaft opening.

6. The opening protection structure for kitchen appliances according to claim 1, characterized in that... The control module is mounted on the housing, which also has a display screen and several operation buttons.

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