Gravity-sensing safety electric kettle

Abstract

The utility model discloses a safe electric kettle of gravity response belongs to hot kettle technical field, including the body of kettle, base and circuit board, the body of kettle is placed on the base, and the base is composed of base shell and bottom plate, and the bottom plate is connected with the bottom of base shell and forms the installation cavity, and the circuit board is installed in the installation cavity. Multiple groups of pressure sensors are equipped in the installation cavity, the pressure sensor is installed in the base shell and forms the trigger space with the base shell, and multiple groups of trigger parts located in the trigger space are equipped on the base shell, one end of trigger part contacts the body of kettle, the other end contacts the pressure sensor, multiple groups of pressure sensors are electrically connected with the circuit board, and the fixed part is further equipped on the base shell. The electric kettle passes through trigger part and transmits the gravity of the body of kettle to the pressure sensor, and the start and stop are controlled according to the pressure signal by the circuit board, and the fixed part is used for stabilizing the body of kettle, the use safety is improved, and the problem that the traditional electric kettle lacks gravity response protection and is easy to cause risk due to accidental touch is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric kettles, and more specifically, it relates to a gravity-sensing safety electric kettle. Background Technology

[0002] In daily life and office settings, electric kettles have become indispensable drinking water aids due to their high heating efficiency and ease of use. However, during use, users frequently need to add water and turn on the kettle to obtain hot water, and there are often instances where users leave temporarily and forget to check the water level. If the equipment lacks safety features, operational negligence can easily lead to safety risks. Traditional electric kettles often only have simple heating and manual power-off functions, unable to determine whether to start heating based on the water level. Even when the kettle is empty, it can still boil water, causing the heating element to operate at a continuously high temperature without water for heat dissipation. This not only accelerates the aging and damage of the heating element and shortens the lifespan of the device, but can also cause problems such as melting and smoking of the base's plastic parts due to excessively high localized temperatures, and even triggering short circuits. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a gravity-sensing safety electric kettle. This solves the technical problem in the prior art where traditional electric kettles only provide simple heating and manual power-off, cannot determine whether heating is needed based on water volume, and can still boil water even when there is no water, leading to damage to the heating element, shortened lifespan, and even component melting and short circuits.

[0004] The purpose and function of this gravity-sensing safety electric kettle are achieved by the following specific technical means: A gravity-sensing safety electric kettle includes a kettle body, a base, and a circuit board. The kettle body is placed on the base, which includes a base shell and a bottom plate. The bottom plate is connected to the bottom of the base shell, and the two are connected to form a mounting cavity. The circuit board is installed in the mounting cavity, and multiple pressure sensors are arranged in the mounting cavity. The pressure sensors are installed inside the base shell, and a trigger space is formed between the pressure sensors and the base shell. Multiple trigger parts are arranged on the base shell, and the trigger parts are located in the trigger space. One end of the trigger part contacts the kettle body, and the other end contacts the pressure sensor. All of the multiple pressure sensors are electrically connected to the circuit board. A fixing part is also provided on the base shell.

[0005] According to a preferred embodiment, the triggering part includes a mounting base and a trigger rod. The mounting base is integrally formed with the base housing. The mounting base has a first through hole and a second through hole. The second through hole is located on the top surface of the base housing. The first through hole and the second through hole communicate with each other, and the trigger rod passes through both. Mounting sleeves are provided on both sides of the mounting base. The height of the mounting sleeves is greater than the height of the mounting base. The pressure sensor is connected to the two sets of mounting sleeves by screws. The pressure sensor forms the triggering space between the mounting sleeves and the mounting base.

[0006] According to a preferred embodiment, the base housing is provided with multiple sets of sliding rods, which are respectively located at both ends of the mounting base; a connecting plate is provided at the bottom of the trigger rod, the connecting plate is located in the trigger space, and sliding holes are provided at both ends of the connecting plate. The sliding rod passes through the sliding holes, and the connecting plate is slidably connected to the sliding rod. The end of the trigger rod with the connecting plate moves up and down in the trigger space.

[0007] According to a preferred embodiment, the triggering part further includes a reset spring, a limiting nut is provided at the bottom of the sliding rod, the reset spring is located between the connecting plate and the limiting nut and is sleeved on the sliding rod, and a contact protrusion is provided on one side of the connecting plate; when the kettle body is placed on the base, one end of the triggering rod contacts the kettle body, the triggering rod moves downward, the connecting plate compresses the reset spring, and the contact protrusion contacts the sensing end of the pressure sensor.

[0008] According to a preferred embodiment, the diameter of the first through hole is smaller than the diameter of the second through hole, and a sealing block is provided on the trigger rod, the sealing block passing through the second through hole; when the kettle body is not placed on the base, the top surface of the sealing block is parallel to the top surface of the base shell; when the kettle body is placed on the base, the bottom surface of the sealing block contacts the bottom surface of the second through hole, covering the first through hole.

[0009] According to a preferred embodiment, an elastic element is provided between the base plate and the pressure sensor. Multiple sets of slots are provided on the upper part of the base plate. The two ends of the spring element are engaged in the slots. The spring element is arched, and the top of the arched spring element contacts the bottom of the pressure sensor.

[0010] According to a preferred embodiment, the fixing part includes two sets of fixing members and a moving track disposed on both sides of the base shell. The fixing members are distributed on both sides of the base shell and are slidably connected to the moving track. A connecting member is also disposed on one side of the base shell. The connecting member is arc-shaped, and the center point of the connecting member coincides with the center point of the base shell. Both ends of the connecting member are respectively connected to the two sets of connecting members. Both sides of the kettle body are provided with protruding strips. The two ends of the protruding strips are set as fixing areas, and the middle part is set as an unlocking area. An inlet / outlet groove is opened on the protruding strip, and the inlet / outlet groove is located in the unlocking area. The fixing member is located in the fixing area and one end is snapped onto the protruding strip.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This device solves the technical problems of traditional electric kettles by setting up multiple pressure sensors and triggering units in the base: When the kettle body is placed on the base, the weight of the kettle body is transmitted to the pressure sensors through the triggering unit. Multiple pressure sensors work together to detect and transmit signals to the circuit board. The circuit board can determine whether the water level in the kettle meets the heating conditions based on the pressure change. If the water level is insufficient or there is no water, and the pressure value does not reach the preset threshold, the circuit board will cut off the heating circuit to prevent the heating element from burning dry. Only when the water level is sufficient and the pressure value meets the standard will the circuit be turned on for heating. Structurally, this eliminates the risks of heating element damage, shortened lifespan, component melting, and short circuits caused by heating without water.

[0012] 2. During use, the cooperation between the reset spring and the sliding rod in the trigger section ensures stable reset of the trigger rod when the kettle is placed or removed, improving the sensitivity and consistency of the pressure sensing. The sealing block seals the first through hole when the kettle is placed, preventing liquid and dust from entering the mounting cavity and protecting the internal circuitry and sensor. The arched design of the elastic element provides buffer support for the pressure sensor and enhances the transmission effect of the pressure signal, improving detection accuracy. The fixing part, through the snap-fit ​​between the fixing part and the protruding strip of the kettle, can position the kettle on the base, preventing displacement of the kettle due to accidental collisions and ensuring that the pressure sensor can always detect the water volume. At the same time, the arc structure of the connecting part makes the adjustment of the fixing part smoother, taking into account both stability and ease of operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembled structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the structure after the trigger part is disassembled; Figure 4 yes Figure 2 A magnified view of a portion of region a; Figure 5 This is a schematic diagram of the structure of the first through hole and the second through hole.

[0014] In the diagram, the correspondence between component names and their corresponding reference numerals is as follows: 11. Kettle body; 12. Base shell; 13. Base plate; 14. Pressure sensor; 21. Mounting base; 22. Trigger rod; 23. First through hole; 24. Second through hole; 25. Mounting sleeve; 31. Sliding rod; 32. Connecting plate; 33. Sliding hole; 34. Return spring; 35. Limit nut; 36. Contact protrusion; 37. Sealing block; 38. Elastic element; 39. Slot; 41. Fixing element; 42. Moving track; 43. Connecting element; 44. Protruding strip; 45. Inlet / outlet groove. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0016] Example:

[0017] like Figures 1 to 5 As shown, this utility model provides a gravity-sensing safety electric kettle, including a kettle body 11, a base, and a circuit board. These three components work together to achieve both boiling and safety protection. The kettle body 11, as the core component for holding and heating water, is placed on the base, which provides support and a mounting foundation for the entire device. The circuit board receives signals and controls the kettle's start and stop, ensuring safe use. The base specifically includes a base shell 12 and a bottom plate 13. The bottom plate 13 is made of a high-temperature resistant and impact-resistant material and is connected to the bottom of the base shell 12 by screws. The connection forms a closed mounting cavity, providing independent mounting space for electronic components and mechanical parts such as the circuit board and pressure sensor 14, preventing external dust and water stains from affecting the operation of the components.

[0018] The circuit board is horizontally mounted in the mounting cavity near the base plate 13. Multiple pressure sensors 14 are evenly arranged within the mounting cavity. The pressure sensors 14 are installed at predetermined positions within the base housing 12, with a pre-existing trigger space between them to allow for movement of the triggering parts. Multiple triggering parts are positioned on the base housing 12 corresponding to the pressure sensors 14. Each triggering part is located within the triggering space, with one end extending to the top surface of the base housing 12 and contacting the bottom of the kettle body 11, while the other end faces the pressure sensors 14, allowing them to contact the pressure sensors 14 after the kettle body 11 is placed. All pressure sensors 14 are electrically connected to the circuit board via wires, transmitting the sensed pressure signals to the circuit board, which then determines whether to activate the heating function. Furthermore, the base housing 12 also has a fixing part to limit and fix the kettle body 11 after placement, preventing it from shifting or tipping over during use. Rubber pads are evenly distributed at the corners of the bottom surface of the base plate 13, with a thickness slightly greater than 0.5-1 cm. The rubber pad is made of non-slip material, and its bottom surface can be set with fine texture to increase the friction between it and the surface (such as a table or countertop). When the kettle body 11 is placed on the base and water is poured in, even if it is slightly bumped or the table is slightly tilted, the rubber pad can prevent the base from sliding and prevent the electric kettle from tipping over.

[0019] like Figure 3 , Figure 4 As shown, the trigger unit, as a key structure for pressure sensing, includes a mounting base 21 and a trigger rod 22. The mounting base 21 and the base housing 12 are manufactured using an integral molding process to ensure structural stability and prevent loosening after long-term use. The mounting base 21 has a first through hole 23 and a second through hole 24 vertically. The second through hole 24 extends to the top surface of the base housing 12, while the first through hole 23 is located inside the mounting base 21. The first through hole 23 and the second through hole 24 are interconnected, forming a channel for the trigger rod 22 to pass through. The trigger rod 22 passes through the first through hole 23 and the second through hole 24 and can move up and down along the axis of the through holes. Mounting sleeves 25 are symmetrically arranged on both sides of the mounting base 21. The height of the mounting sleeves 25 is greater than the height of the mounting base 21, so that the top of the mounting sleeves 25 is higher than the top surface of the mounting base 21. The pressure sensor 14 is fixed to the top of the two sets of mounting sleeves 25 by screws. At this time, the sensing end of the pressure sensor 14 faces downward, forming the trigger space mentioned above between it and the top surface of the mounting base 21. The height of this space can be adapted by adjusting the height of the mounting sleeves 25 to ensure that the triggering part can trigger the pressure sensor 14 normally.

[0020] To improve the stability of the trigger rod 22's movement, multiple sets of sliding rods 31 are provided inside the base housing 12 at positions corresponding to the mounting base 21. These sliding rods 31 are located at both ends of the mounting base 21 and are vertically connected to the bottom of the base housing 12. A connecting plate 32 is welded to the bottom of the trigger rod 22. The connecting plate 32 is entirely located within the trigger space, and both ends of the connecting plate 32 have sliding holes 33 adapted to the sliding rods 31. The sliding rods 31 pass through the sliding holes 33, allowing the connecting plate 32 to slide up and down along the axis of the sliding rods 31. This causes the end of the trigger rod 22 with the connecting plate 32 to move stably up and down within the trigger space, preventing the trigger rod 22 from tilting during movement and ensuring that the trigger rod 22 can contact the pressure sensor 14.

[0021] The triggering part also includes a return spring 34. The bottom of the sliding rod 31 is connected to a limit nut 35 by a thread. The return spring 34 is sleeved on the sliding rod 31 and is located between the connecting plate 32 and the limit nut 35. In the natural state, the return spring 34 is in a slightly stretched state, which can push the connecting plate 32 upward, thereby causing the top of the trigger rod 22 to extend out of the top surface of the base housing 12. At the same time, the connecting plate 32 has an integrally formed contact protrusion 36 on the side facing the pressure sensor 14. The position of the contact protrusion 36 corresponds to the sensing end of the pressure sensor 14. When the kettle body 11 is placed on the base, the bottom of the kettle body 11 exerts pressure on the top of the trigger rod 22, pushing the trigger rod 22 downward. The trigger rod 22 drives the connecting plate 32 to slide downward along the sliding rod 31. The connecting plate 32 compresses the reset spring 34 until the contact protrusion 36 contacts the sensing end of the pressure sensor 14. After sensing the pressure, the pressure sensor 14 generates a signal and transmits it to the circuit board. When the kettle body 11 is removed from the base, the compression force of the reset spring 34 is released, pushing the connecting plate 32 upward, causing the trigger rod 22 to reset. The contact protrusion 36 separates from the pressure sensor 14, and the pressure sensor 14 stops transmitting signals to the circuit board.

[0022] like Figure 2 , Figure 5As shown, to prevent external dust or water stains from entering the mounting cavity through the through-hole, the diameter of the first through-hole 23 is smaller than the diameter of the second through-hole 24, forming a stepped structure. A sealing block 37 is fitted on the trigger rod 22 at the position corresponding to the second through-hole 24. The sealing block 37 is made of elastic sealing material, and its diameter is adapted to the diameter of the second through-hole 24. The sealing block 37 passes through the second through-hole 24 and can move together with the trigger rod 22. When the kettle body 11 is not placed on the base, the return spring 34 pushes the trigger rod 22 upward. At this time, the top surface of the sealing block 37 is parallel to the top surface of the base shell 12, which can initially seal the second through-hole 24. When the kettle body 11 is placed on the base, the trigger rod 22 moves downward, causing the sealing block 37 to slide downward along the second through-hole 24 until the bottom surface of the sealing block 37 contacts the stepped surface at the bottom of the second through-hole 24, completely covering the first through-hole 23, completely blocking the path of external impurities into the mounting cavity, and protecting the components in the mounting cavity from contamination.

[0023] like Figure 2 , Figure 4 As shown, to further improve the sensing stability of the pressure sensor 14, an elastic element 38 is provided between the base plate 13 and the pressure sensor 14. Multiple sets of slots 39 are provided on the base plate 13 corresponding to both ends of the elastic element 38. The two ends of the elastic element 38 are engaged in the slots 39 to achieve fixed installation. The elastic element 38 is arched in shape, with its top protruding upwards and contacting the bottom of the pressure sensor 14. After the pressure sensor 14 is installed, the elastic element 38 is in a slightly compressed state, which can generate an upward supporting force on the pressure sensor 14, reducing the positional displacement of the pressure sensor 14 due to its own weight or slight vibration. Simultaneously, when the trigger part contacts the pressure sensor 14, the elastic element 38 can play a certain buffering role, preventing excessive pressure from damaging the sensing end of the pressure sensor 14 and extending the service life of the pressure sensor 14.

[0024] like Figure 2 As shown, the fixing part includes two sets of fixing members 41 and a moving track 42 disposed on both sides of the base housing 12. The moving track 42 is arranged along the length direction of the base housing 12. The two sets of fixing members 41 are respectively distributed on both sides of the base housing 12, and the bottom of the fixing members 41 is slidably connected to the moving track 42. The fixing members 41 can move along the length direction of the moving track 42 to adjust the distance between the two sets of fixing members 41. A connecting member 43 is also provided on one side of the base housing 12. The connecting member 43 is arc-shaped, and its center point coincides with the center point of the base housing 12, so that the connecting member 43 can rotate about the center of the base housing 12. The two ends of the connecting member 43 are respectively connected to the two sets of fixing members 41 through pins. When the connecting member 43 is rotated, it can drive the two sets of fixing members 41 to move closer or further away synchronously along the moving track 42 to achieve synchronous adjustment of the distance.

[0025] The kettle body 11 has integrally formed raised strips 44 on both sides corresponding to the fixing parts 41. The raised strips 44 are set along the height direction of the kettle body 11, with the two ends of the raised strips 44 being fixing areas and the middle part being an unlocking area. An inlet / outlet groove 45 is opened on the raised strips 44 corresponding to the unlocking area. The width of the inlet / outlet groove 45 is greater than the width of the fixing parts 41 to facilitate the entry and exit of the fixing parts 41. When the kettle body 11 is placed on the base, the connecting part 43 is rotated, which drives the two sets of fixing parts 41 to move along the moving track 42 toward the raised strips 44 until the fixing parts 41 enter the fixing area of ​​the raised strips 44. At this time, one end of the fixing part 41 is locked onto the raised strips 44, limiting the kettle body 11. When it is necessary to remove the kettle body 11, the connecting part 43 is rotated in the opposite direction, which drives the fixing parts 41 to move to the inlet / outlet groove 45, so that the kettle body 11 can be lifted upward. The operation is convenient and the fixing effect is reliable.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A gravity-sensing safety electric kettle, comprising a kettle body (11), a base, and a circuit board, characterized in that: The kettle body (11) is placed on the base, which includes a base shell (12) and a bottom plate (13). The bottom plate (13) is connected to the bottom of the base shell (12), and the two are connected to form an installation cavity. The circuit board is installed in the installation cavity, and multiple pressure sensors (14) are provided in the installation cavity. The pressure sensors (14) are installed in the base shell (12), and a trigger space is formed between the pressure sensors (14) and the base shell (12). Multiple trigger parts are provided on the base shell (12), and the trigger parts are located in the trigger space. One end of the trigger part is in contact with the kettle body (11), and the other end is in contact with the pressure sensor (14). The multiple pressure sensors (14) are all electrically connected to the circuit board. The base shell (12) is also provided with a fixing part.

2. The gravity-sensing safety electric kettle according to claim 1, characterized in that: The triggering part includes a mounting base (21) and a trigger rod (22). The mounting base (21) is integrally formed with the base shell (12). The mounting base (21) has a first through hole (23) and a second through hole (24). The second through hole (24) is located on the top surface of the base shell (12). The first through hole (23) and the second through hole (24) are interconnected. The trigger rod (22) passes through both of them. Mounting sleeves (25) are provided on both sides of the mounting base (21). The height of the mounting sleeves (25) is greater than the height of the mounting base (21). The pressure sensor (14) is connected to the two sets of mounting sleeves (25) by screws. The pressure sensor (14) forms the triggering space between the mounting sleeves (25) and the mounting base (21).

3. A gravity-sensing safety electric kettle according to claim 2, characterized in that: Multiple sets of sliding rods (31) are provided inside the base shell (12), and the multiple sets of sliding rods (31) are respectively located at both ends of the mounting base (21); a connecting plate (32) is provided at the bottom of the trigger rod (22), the connecting plate (32) is located in the trigger space, and sliding holes (33) are provided at both ends of the connecting plate (32). The sliding rod (31) passes through the sliding hole (33), and the connecting plate (32) is slidably connected to the sliding rod (31). The end of the trigger rod (22) provided with the connecting plate (32) moves up and down in the trigger space.

4. A gravity-sensing safety electric kettle according to claim 3, characterized in that: The triggering part also includes a reset spring (34), and a limit nut (35) is provided at the bottom of the sliding rod (31). The reset spring (34) is located between the connecting plate (32) and the limit nut (35) and is sleeved on the sliding rod (31). A contact protrusion (36) is provided on one side of the connecting plate (32). When the kettle body (11) is placed on the base, one end of the trigger rod (22) contacts the kettle body (11), the trigger rod (22) moves downward, the connecting plate (32) compresses the reset spring (34), and the contact protrusion (36) contacts the sensing end of the pressure sensor (14).

5. A gravity-sensing safety electric kettle according to claim 2, characterized in that: The diameter of the first through hole (23) is smaller than the diameter of the second through hole (24). A sealing block (37) is provided on the trigger rod (22), and the sealing block (37) passes through the second through hole (24). When the kettle body (11) is not placed on the base, the top surface of the sealing block (37) is parallel to the top surface of the base shell (12). When the kettle body (11) is placed on the base, the bottom surface of the sealing block (37) contacts the bottom surface of the second through hole (24) and covers the first through hole (23).

6. A gravity-sensing safety electric kettle according to claim 1, characterized in that: An elastic element (38) is provided between the base plate (13) and the pressure sensor (14). Multiple sets of slots (39) are provided on the base plate (13). The two ends of the elastic element (38) are locked in the slots (39). The elastic element (38) is arched. The top of the arch of the elastic element (38) is in contact with the bottom of the pressure sensor (14).

7. A gravity-sensing safety electric kettle according to claim 1, characterized in that: The fixing part includes two sets of fixing members (41) and a moving track (42) disposed on both sides of the base shell (12). The fixing members (41) are distributed on both sides of the base shell (12) and are slidably connected to the moving track (42). A connecting member (43) is also provided on one side of the base shell (12). The connecting member (43) is arc-shaped, and the center point of the connecting member (43) coincides with the center point of the base shell (12). The two ends of the connecting member (43) are respectively connected to the two sets of fixing members (41). The two sides of the kettle body (11) are provided with protruding strips (44). The two ends of the protruding strips (44) are set as fixing areas, and the middle part is set as unlocking areas. An inlet / outlet groove (45) is opened on the protruding strips (44), and the inlet / outlet groove (45) is located in the unlocking area. The fixing member (41) is located in the fixing area and one end is snapped onto the protruding strip (44).

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