Rotary magnetic control switch for kitchen range

Abstract

The utility model relates to the field of stove switches, and discloses a rotary magnetic control switch for a stove, which comprises a switch main body and a rotary main shaft, a first through hole is arranged at the upper end of the switch main body, the rotary main shaft penetrates through the first through hole and is rotatably connected with the switch main body, a plurality of gear grooves are arranged on the rotary main shaft, and the gear grooves extend along the rotating direction of the rotary main shaft. The switch body is correspondingly provided with abutting portions matched with the gear grooves, the rotating main shaft is rotated to enable the abutting portions to abut into the different gear grooves to achieve gear shifting, the lower end of the rotating main shaft is connected with a gear shifting device, magnets are arranged at the two ends of the gear shifting device, a PCB is arranged at the lower end of the gear shifting device, a Hall element and a sensor are arranged on the PCB, and the PCB is detachably connected with the switch body. And the rotating main shaft drives the gear shifting device to rotate relative to the PCB, so that the PCB forms an electric signal corresponding to the gear. The switch controls a circuit through an electric signal, and is high in control stability and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of stove switches, and in particular to a rotary magnetic control switch for stoves. Background Technology

[0002] In modern kitchens, the cooktop, as a core cooking appliance, receives significant attention from users for its ease of use and reliability. Currently, most cooktops on the market are equipped with a power switch to adjust the heat level and meet diverse cooking needs. However, most widely used power switches are mechanical contact switches. During cooking, frequent operation causes friction between the mechanical contacts, leading to wear and tear over time. This not only increases the switch's contact resistance, affecting circuit conductivity and causing unstable heat control, but also significantly shortens the switch's lifespan. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a rotary magnetic control switch for stoves, which has no mechanical contacts, controls the circuit through electrical signals, and has high control stability and long service life.

[0004] The specific technical solution of this utility model is as follows: A rotary magnetic control switch for a stove includes a switch body and a rotating spindle. The upper end of the switch body is provided with a first through-hole, and the rotating spindle passes through the first through-hole and is rotatably connected to the switch body. The rotating spindle is provided with a plurality of gear slots, which extend along the rotation direction of the rotating spindle. The switch body is provided with corresponding abutment parts adapted to the gear slots. Rotating the rotating spindle causes the abutment parts to abut into different gear slots to achieve gear shifting. The lower end of the rotating spindle is connected to a shifter with magnets at both ends. The lower end of the shifter is provided with a PCB board, on which Hall elements and sensors are provided. The PCB board is detachably connected to the switch body. The rotating spindle drives the shifter to rotate relative to the PCB board, so that the PCB board generates an electrical signal corresponding to the gear position.

[0005] In the above technical solution, the rotation of the main spindle drives the shifter to rotate relative to the PCB board. The magnet on the shifter rotates accordingly. The Hall element on the PCB board controls the switching circuit based on the change in magnetic field. The circuit contains multiple sets of resistors connected in series, each corresponding to a gear position. When the circuit is on, the resistor corresponding to the current gear position is short-circuited to ground, forming a fixed voltage. Depending on the gear position, different fixed voltage values ​​are generated in the circuit and captured by the sensor. The sensor then generates a corresponding electrical signal and sends it to the CPU. Compared to mechanical contact control, this method of controlling the circuit via electrical signals eliminates the need for mechanical contacts. The operating parts do not contact the circuit, preventing wear over long-term use and reducing control instability caused by poor contact. This results in high control stability and a long service life. The design of the gear slot and the contact part allows for precise control of the main spindle's rotation position, ensuring that the contact part accurately engages with the corresponding gear slot each time a gear is changed, thus stably achieving the switching between different gear positions.

[0006] Preferably, the abutting part includes a second connecting part connected to the switch body and an abutting ball abutting against the gear slot, the abutting ball being connected to the second connecting part by a spring.

[0007] In the above technical solution, the abutment ball can be accurately embedded in the gear slot, providing clear positioning for the rotating spindle and defining the gear shifting position. When the rotating spindle rotates, the abutment ball is always in close contact with the rotating spindle due to the spring force, ensuring a stable gear shifting process and avoiding gear skipping or disengagement, thus maintaining stable equipment operation. At the moment of gear shifting, the rotation of the rotating spindle will generate an impact, and the spring can play a buffering role, reducing the impact between the abutment ball and the gear slot, reducing wear, and extending the service life of the abutment part and the gear slot.

[0008] Preferably, the switch body has a second opening on the side corresponding to the gear slot, which is adapted to the size of the second connecting part. The second connecting part is inserted into the second opening to realize the connection between the abutting part and the switch body. The end of the second connecting part away from the rotating main shaft protrudes from the outer surface of the switch body, and the abutting ball passes through the second opening and abuts against the gear slot.

[0009] In the above technical solution, the second connecting part only needs to be inserted into the second port to quickly and accurately connect with the switch body, which simplifies the installation steps and improves production and assembly efficiency. The abutting part is set separately from the switch body. When the parts of the abutting part need to be replaced, there is no need to disassemble the entire switch body. The abutting part can be inspected and the parts replaced simply by pulling out the second connecting part, which reduces the maintenance difficulty.

[0010] Preferably, the second connecting part includes a first connecting sleeve connected to the switch body. The first connecting sleeve is provided with a set screw, which is connected to a spring. The end of the first connecting sleeve away from the rotating main shaft is provided with a pluggable first plug to limit the rearward displacement of the set screw during gear shifting.

[0011] In the above technical solution, during gear shifting, the abutment part will be subjected to a certain backward impact force. The first plug restricts the backward displacement of the set screw during gear shifting, ensuring that the set screw always remains in the correct position.

[0012] Preferably, the second port is provided with a first limiting sleeve at one end near the rotating spindle, and a spring is provided inside the first limiting sleeve, so that the abutting ball moves along the axial direction of the first limiting sleeve.

[0013] In the above technical solution, the first limiting sleeve restricts the circumferential swing of the contact ball, so as to avoid the positional deviation between the circumferential swing of the contact ball and the gear slot during gear shifting, thus ensuring accurate gear shifting position and improving gear shifting positioning accuracy.

[0014] Preferably, the gear slot is a conical groove.

[0015] In the above technical solution, when the abutting ball contacts the gear slot, the inclined edge in the positioning slot guides the abutting ball to automatically move towards the center of the groove, achieving automatic positioning; during gear shifting, the abutting ball can smoothly disengage along the inclined edge of the current gear slot, and after disengagement, it can smoothly enter the next gear slot along the inclined edge, making the gear shifting process easier and less strenuous; after the gear shift is completed, the abutting ball can be stably held in the groove of the corresponding gear, and is not easily moved by small external forces, preventing gear skipping or disengagement.

[0016] Preferably, the rotating spindle is provided with a limiting groove that extends along the rotation direction of the rotating spindle, and the switch body is provided with a limiting member that is adapted to the limiting groove. The limiting member extends into the limiting groove to limit the rotation angle of the rotating spindle so that the abutting part always abuts against any shift groove.

[0017] In the above technical solution, the cooperation between the limiting component and the limiting groove ensures that the rotating spindle will not rotate too much and cause the contact part to leave the range of the gear slot, thus ensuring that the contact part always works normally within the range of the gear slot. Each time the gear is changed, the contact part can accurately fall into the corresponding gear slot.

[0018] Preferably, the switch body is provided with a third port, and a second connecting sleeve is connected to one end of the third port near the rotating main shaft. A limiting member is fitted in the second connecting sleeve, and one end of the limiting member extends out of the third port and enters the limiting groove. The opening of the third port away from the rotating main shaft is sealed by a pluggable second plug, and the end of the second plug away from the rotating main shaft abuts against the outer surface of the switch body.

[0019] In the above technical solution, the limiting component and the switch body are set separately. When the limiting component needs to be repaired or replaced, the limiting component can be easily removed from the second connecting sleeve simply by pulling out the second plug. The operation is simple and quick. The second plug seals the third port, effectively preventing external dust, debris and other objects from entering the switch.

[0020] Preferably, the shifter has several slots on the side facing the rotating spindle, and several corresponding blocks are provided on the rotating spindle. When the shifter is connected to the rotating spindle, the blocks are embedded in the slots so that the shifter rotates synchronously with the rotating spindle.

[0021] In the above technical solution, the cooperation between the slot and the block achieves multi-point positioning. Compared with single-point connection, multi-point positioning can more comprehensively and stably constrain the relative movement between the shifter and the rotating spindle. During rotation, the blocks interact within the slot, restricting the displacement of the shifter from multiple directions, ensuring that the shifter closely follows the rotation of the spindle without wobbling or deviation, thus guaranteeing the stability of the overall structure. The PCB board accurately generates electrical signals corresponding to the shift positions, preventing shift skipping.

[0022] Preferably, the rotating spindle is provided with a plurality of sealing rings for tightly fitting the switch body.

[0023] In the above technical solution, in the cooking environment, there will be oil and water around the switch. Impurities in the oil or substances left after the water evaporates will gradually accumulate between the rotating spindle and the switch body, solidify and stick to the rotating spindle, causing it to be unable to shift gears normally. Setting a sealing ring can prevent oil and water from entering the interior along the gap between the rotating spindle and the switch body, thus improving the service life of the switch.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] (1) By controlling the circuit with electrical signals, there is no need to set mechanical contacts. The operating parts do not contact the circuit, and long-term use will not cause wear. This reduces the instability caused by poor contact and other problems, resulting in high control stability and long service life. (2) The design of the gear slot and the abutment part allows the rotation position of the rotating spindle to be precisely controlled. The cooperation between the limit part and the limit slot prevents the rotating spindle from rotating too much and causing the abutment part to leave the range of the gear slot. This ensures that the abutment part can accurately abut into the corresponding gear slot each time the gear is changed, thereby stably realizing the switching of different gears. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the present invention;

[0027] Figure 2 This is a schematic diagram of the shifting structure of this utility model. Figure 1 ;

[0028] Figure 3 This is a schematic diagram of the shifting structure of this utility model. Figure 2 ;

[0029] Figure 4 This is a schematic diagram of the shifting structure of this utility model. Figure 3 ;

[0030] Figure 5 This is a cross-sectional view of the combined state of the rotating spindle and the shifter of this utility model;

[0031] Figure 6 yes Figure 1 A magnified view of a section at point B in the middle.

[0032] The attached figures are labeled as follows: 1. Switch body; 2. Rotating spindle; 21. First connecting part; 22. Upper part; 23. Lower part; 3. Rear cover; 4. Handle; 5. Abutting part; 51. Abutting ball; 52. Spring; 53. Second connecting part; 531. First connecting sleeve; 532. Set screw; 533. First plug; 6. Cavity; 7. First through-hole; 8. Gear slot; 9. Gear shifter; 10. PCB board; 11. Magnet; 12. Second through-hole; 121. First limiting sleeve; 13. Third through-hole; 14. Limiting element; 15. Second connecting sleeve; 16. Sealing ring; 17. Second plug; 18. Limiting groove; 19. Locking block; 20. Locking slot. Detailed Implementation

[0033] The present invention will be further described below with reference to embodiments. Unless otherwise specified, all devices, connection structures, and methods involved in this invention are known in the art.

[0034] Example 1

[0035] Reference Figures 1 to 6As shown, this utility model provides a rotary magnetic control switch for a stove, including a switch body 1, a rear cover 3, a rotating spindle 2, and a handle 4. The rear cover 3 is threadedly connected to the lower end of the switch body 1 and forms a cavity 6. The upper end of the switch body 1 is provided with a first opening 7. The rotating spindle 2 passes through the first opening 7 and is rotatably connected to the switch body 1. The rotating spindle 2 includes an upper part 22, a first connecting part 21, and a lower part 23 from top to bottom. The upper part 22 protrudes from the switch body 1 and is threadedly connected to the handle 4, so that the rotating spindle 2 can be rotated by operating the handle 4. The first connecting part 21 abuts against the top surface of the switch body 1. The lower part 23 enters the switch body 1 through the first opening 7 and has several stops. The gear slot 8 is located on the arc surface of the rotating shaft and extends along the rotation direction of the main rotating shaft 2. The switch body 1 has a corresponding abutment part 5 adapted to the gear slot 8. Rotating the main rotating shaft 2 causes the abutment part 5 to engage with different gear slots 8 to achieve gear shifting. A shift lever 9 with magnets 11 at both ends is connected to the lower end of the main rotating shaft 2. A PCB board 10 is located at the lower end of the shift lever 9, and a Hall element and sensor are mounted on the PCB board 10. The shift lever 9 and the PCB board 10 are placed inside the cavity 6. The PCB board 10 is threadedly connected to the switch body 1. Rotating the main rotating shaft 2 causes the shift lever 9 to rotate relative to the PCB board 10, causing the PCB board 10 to generate an electrical signal corresponding to the gear position, which is then transmitted to the external control system. It is understood that the handle 4 can be a grip with a handle, a knob, or other commonly used designs in the field that facilitate user grip and rotation. In the figure, direction A is from top to bottom. It is also understood that the components can be connected using common detachable connection methods in the field, such as snap-fit ​​connections.

[0036] The rotation of the main spindle 2 drives the shifter 9 to rotate relative to the PCB board 10. The magnet 11 on the shifter 9 rotates accordingly. The Hall element on the PCB board 10 controls the switching circuit based on the change in magnetic field. There are multiple sets of resistors connected in series in the circuit, each set of resistors corresponding to a gear position. When the circuit is on, the resistor corresponding to the current gear position is short-circuited to ground, forming a fixed voltage. Depending on the gear position, different fixed voltage values ​​are generated in the circuit and captured by the sensor. The sensor generates a corresponding electrical signal and sends it to the CPU. There is no need to set mechanical contacts, the operating parts do not contact the circuit, and there will be no wear and tear during long-term use. This reduces the instability caused by poor contact and other problems, resulting in high control stability and long service life. The design of the gear slot 8 and the abutment part 5 allows for precise control of the rotation position of the main spindle 2, ensuring that the abutment part 5 accurately abuts into the corresponding gear slot 8 each time a gear is changed, thereby stably realizing the switching of different gear positions.

[0037] Furthermore, in this plan, such as Figure 2 and Figure 6As shown, the abutment part 5 includes a second connecting part 53 connected to the switch body 1 and an abutment ball 51 abutting against the gear slot 8. The abutment ball 51 is made of steel ball, and the abutment ball 51 is connected to the second connecting part 53 by a spring 52. When the rotating spindle 2 starts to rotate, the gear slot 8 rotates with the rotating spindle 2. When the rotating spindle 2 rotates to a certain angle, the spring 52 undergoes corresponding extension and contraction deformation, and the abutment ball 51 will disengage from the current gear slot 8 and cross the interval area between adjacent gear slots 8 to enter the next adjacent gear slot 8, thereby realizing gear shifting. The abutment ball 51 can be precisely embedded in the gear position groove 8, providing clear positioning for the rotating spindle 2 and defining the gear shifting position. When the rotating spindle 2 rotates, the abutment ball 51 is always in close contact with the rotating spindle 2 due to the elastic force of the spring 52, ensuring a stable gear shifting process and avoiding gear skipping or disengagement, thus maintaining stable equipment operation. At the moment of gear shifting, the rotation of the rotating spindle 2 will generate an impact, and the spring 52 can play a buffering role, reducing the impact between the abutment ball 51 and the gear position groove 8, reducing wear, and extending the service life of the abutment part 5 and the gear position groove 8.

[0038] In another embodiment, the abutment part 5 is a lever connected to the switch body 1 and positioned facing the rotating main shaft 2. The lever can swing horizontally. When the rotating main shaft 2 is not rotating, one end of the lever is connected to the switch body 1, and the other end is in a certain gear slot 8. When the rotating main shaft 2 starts to rotate, the lever starts to swing horizontally in the direction of rotation. The lever gradually swings out of the current gear slot 8. As the rotating main shaft 2 rotates further, it crosses the interval area between adjacent gear slots 8 and swings to the position of the next gear slot 8 to achieve gear shifting.

[0039] Furthermore, in this plan, such as Figure 2 and Figure 6 As shown, a second opening 12 is provided on the side of the switch body 1 corresponding to the gear slot 8. The size of the second opening 12 is adapted to the second connecting part 53, allowing the second connecting part 53 to be inserted into it. The second connecting part 53 is inserted into the second opening 12 to connect the abutment part 5 to the switch body 1. The end of the second connecting part 53 away from the rotating spindle 2 protrudes from the outer surface of the switch body 1, and the abutment ball 51 passes through the second opening 12 and abuts against the gear slot 8. The second connecting part 53 only needs to be inserted into the second opening 12 to quickly and accurately connect with the switch body 1, simplifying the installation steps and improving production and assembly efficiency. The abutment part 5 is separate from the switch body 1. When the parts of the abutment part 5 need to be replaced, it is not necessary to disassemble the entire switch body 1. Only the second connecting part 53 needs to be pulled out to inspect and replace the parts of the abutment part 5, reducing maintenance difficulty.

[0040] In another embodiment, the end of the second connecting part 53 away from the rotating main shaft 2 is provided with an abutment block. After the second connecting part 53 is inserted into the second port 12, the abutment block abuts against the outer surface of the switch body 1, preventing the second connecting part 53 from continuing to enter. When the second connecting part 53 is inserted into the second port 12, the abutment block serves as a clear positioning marker, eliminating the need to spend too much time judging the insertion depth and improving the efficiency of the connection.

[0041] Furthermore, in this plan, such as Figure 6 As shown, the second port 12 has a first limiting sleeve 121 near the rotating spindle 2. A spring 52 is located inside the first limiting sleeve 121, and the abutment ball 51 moves axially along the first limiting sleeve 121. The second connecting part 53 includes a first connecting sleeve 531 connected to the switch body 1. A set screw 532 is located inside the first connecting sleeve 531, which restricts the spring 52 within the first limiting sleeve 121. A pluggable first plug 533 is located at the end of the first connecting sleeve 531 away from the rotating spindle 2 to limit the rearward displacement of the set screw 532 during gear shifting. The end of the first plug 533 away from the rotating spindle 2 protrudes from the outer surface of the switch body 1. The side of the first limiting sleeve 121 away from the rotating spindle 2 abuts against the second connecting part 53 to limit the insertion depth of the second connecting part 53. In the figure, direction B is from front to back.

[0042] The first limiting sleeve 121 restricts the circumferential swing of the abutment ball 51, preventing positional deviation between the abutment ball 51 and the gear position groove 8 during gear shifting, ensuring accurate gear shifting position and improving shifting positioning precision. Simultaneously, the first limiting sleeve 121 also limits the insertion depth of the second connecting part 53, improving connection efficiency. The set screw 532 confines the spring 52 within the first limiting sleeve 121. This fixing method ensures that the spring 52 will not disengage from the first limiting sleeve 121 during long-term use, guaranteeing the stable force of the spring 52 on the abutment ball 51, thereby maintaining a stable abutment state between the abutment ball 51 and the gear position groove 8. During gear shifting, the abutment part 5 experiences a certain backward impact force. The first plug 533 restricts the backward displacement of the set screw 532 during gear shifting, ensuring that the set screw 532 always remains in the correct position.

[0043] Furthermore, in this design, the gear shift groove 8 is a conical groove with its smaller diameter end facing the rotating main shaft 2. The abutment ball 51 enters the gear shift groove 8 and abuts against the inner wall of the groove 8. The portion of the abutment ball 51 entering the gear shift groove 8 is less than half the size of the ball. When the abutment ball 51 contacts the gear shift groove 8, the inclined edge in the positioning groove guides the abutment ball 51 to automatically move towards the center of the groove, achieving automatic positioning. During gear shifting, the abutment ball 51 can smoothly disengage along the inclined edge of the current gear shift groove 8. After disengaging, it can smoothly enter the next gear shift groove 8 along the inclined edge, making the gear shifting process easier and less strenuous. After gear shifting is completed, the abutment ball 51 can be stably held in the groove of the corresponding gear, and is not easily moved by small external forces, preventing gear skipping or disengagement.

[0044] Furthermore, in this plan, such as Figure 2 and Figure 3 As shown, the rotating spindle 2 is provided with a limiting groove 18, which is circumferentially opposite to the abutment part 5. The limiting groove 18 extends along the rotation direction of the rotating spindle 2. The switch body 1 is provided with a limiting member 14 that is adapted to the limiting groove 18. The limiting member 14 extends into the limiting groove 18 to limit the rotation angle of the rotating spindle 2. The circumferential length of the limiting groove 18 matches the circumferential length formed by several gear slots 8, so that the abutment part 5 always abuts against any gear slot. Through the cooperation of the limiting member 14 and the limiting groove 18, the rotating spindle 2 will not rotate too much, causing the abutment part 5 to leave the range of the gear slot 8, ensuring that the abutment part 5 always works normally within the range of the gear slot 8. Each time a gear is changed, the abutment part 5 can accurately fall into the corresponding gear slot 8.

[0045] Furthermore, in this design, the switch body 1 is provided with a third port 13. A second connecting sleeve 15 is connected to one end of the third port 13 near the rotating spindle 2. A limiting member 14 is fitted inside the second connecting sleeve 15. The limiting member 14 uses a limiting screw, and the second connecting sleeve 15 has an internal thread adapted to the limiting screw. One end of the limiting member 14 extends out of the third port 13 and enters the limiting groove 18, abutting against the limiting groove 18. The opening of the third port 13 away from the rotating spindle 2 is sealed by a removable second plug 17. The end of the second plug 17 away from the rotating spindle 2 abuts against the outer surface of the switch body 1. The limiting member 14 is separately installed from the switch body 1. When the limiting member 14 needs maintenance or replacement, it can be easily removed from the second connecting sleeve 15 simply by pulling out the second plug 17, making the operation simple and quick. The second plug 17 seals the third port 13, effectively preventing external dust and debris from entering the switch. Understandably, the limiting component 14 can also be a limiting structure such as a limiting block that can abut against the limiting groove 18.

[0046] In another embodiment, the limiting member 14 is integrated with the switch body 1. The switch body 1 has a protruding limiting member 14 at a position corresponding to the limiting groove 18, and the limiting member 14 extends into the limiting groove 18 and abuts against the limiting groove 18. The overall design reduces the number of connection points between components and lowers the risk of failure due to loose connections.

[0047] Furthermore, in this design, the shifter 9 has two slots 20 on the side facing the rotating spindle 2, and two corresponding blocks 19 on the rotating spindle 2. When the shifter 9 is connected to the rotating spindle 2, the blocks 19 are embedded in the slots 20, so that the shifter 9 rotates synchronously with the rotating spindle 2. The cooperation between the slots 20 and the blocks 19 achieves multi-point positioning. Compared with single-point connection, multi-point positioning can more comprehensively and stably constrain the relative movement between the shifter 9 and the rotating spindle 2. During rotation, the blocks 19 interact within the slots 20, restricting the displacement of the shifter 9 from multiple directions, ensuring that the shifter 9 closely follows the rotation of the rotating spindle 2 without wobbling or shifting, thus guaranteeing the stability of the overall structure. The PCB board 10 accurately generates electrical signals corresponding to the gear position, avoiding gear skipping.

[0048] Furthermore, in this design, the rotating spindle 2 is provided with several sealing rings 16 for tightly adhering to the switch body 1. In a cooking environment, oil and water may be present around the switch. Impurities in the oil or substances left after the water evaporates will gradually accumulate between the rotating spindle 2 and the switch body 1, solidifying and sticking the rotating spindle 2, causing it to be unable to shift gears normally. The sealing rings 16 can prevent oil and water from entering the interior along the gap between the rotating spindle 2 and the switch body 1, thereby improving the service life of the switch.

[0049] Furthermore, in this solution, both the switch body 1 and the rotating spindle 2 are made of engineering plastic, which has good wear resistance and self-lubrication, thus preventing the metal from rusting and corroding over long-term use, which could lead to the gear jamming. It also prevents the powder generated by the friction between metals from falling onto the PCB board 10 and causing damage to the PCB board 10.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A rotary magnetic control switch for a stove, characterized in that, The switch body (1) includes a switch body (1) and a rotating spindle (2). The upper end of the switch body (1) is provided with a first through-hole (7). The rotating spindle (2) passes through the first through-hole (7) and is rotatably connected to the switch body (1). The rotating spindle (2) is provided with several position slots (8). The position slots (8) extend along the rotation direction of the rotating spindle (2). The switch body (1) is provided with corresponding abutment parts (5) that are adapted to the position slots (8). Rotating the rotating spindle (2) causes the abutment parts (5) to abut against each other. Different gear slots (8) are used to achieve gear shifting. The lower end of the rotating spindle (2) is connected to a shifter (9) with magnets (11) at both ends. The lower end of the shifter (9) is provided with a PCB board (10). Hall elements and sensors are provided on the PCB board (10). The PCB board (10) is detachably connected to the switch body (1). The rotating spindle (2) drives the shifter (9) to rotate relative to the PCB board (10), so that the PCB board (10) generates an electrical signal corresponding to the gear position.

2. A rotary magnetic control switch for a stove according to claim 1, characterized in that, The abutting part (5) includes a second connecting part (53) connected to the switch body (1) and an abutting ball (51) abutting against the gear slot (8). The abutting ball (51) and the second connecting part (53) are connected by a spring (52).

3. A rotary magnetic control switch for a stove according to claim 2, characterized in that, The switch body (1) has a second opening (12) on the side corresponding to the gear slot (8) that is adapted to the size of the second connecting part (53). The second connecting part (53) is inserted into the second opening (12) to realize the connection between the abutting part (5) and the switch body (1). The end of the second connecting part (53) away from the rotating main shaft (2) protrudes from the outer surface of the switch body (1). The abutting ball (51) passes through the second opening (12) and abuts against the gear slot (8).

4. A rotary magnetic control switch for a stove according to claim 3, characterized in that, The second connecting part (53) includes a first connecting sleeve (531) connected to the switch body (1). The first connecting sleeve (531) is provided with a set screw (532), which is connected to a spring (52). The end of the first connecting sleeve (531) away from the rotating main shaft (2) is provided with a pluggable first plug (533) to limit the rearward displacement of the set screw (532) during gear shifting.

5. A rotary magnetic control switch for a stove according to claim 3, characterized in that, The second port (12) is provided with a first limiting sleeve (121) at one end near the rotating spindle (2), and a spring (52) is provided inside the first limiting sleeve (121) to abut the ball (51) moving along the axial direction of the first limiting sleeve (121).

6. A rotary magnetic control switch for a stove according to claim 2, characterized in that, The gear slot (8) is a conical groove.

7. A rotary magnetic control switch for a stove according to claim 1, characterized in that, The rotating spindle (2) is provided with a limiting groove (18), which extends along the rotation direction of the rotating spindle (2). The switch body (1) is provided with a limiting member (14) that is adapted to the limiting groove (18). The limiting member (14) extends into the limiting groove (18) to limit the rotation angle of the rotating spindle (2) so that the abutting part (5) always abuts against any shift groove.

8. A rotary magnetic control switch for a stove according to claim 7, characterized in that, The switch body (1) is provided with a third port (13). The end of the third port (13) close to the rotating spindle (2) is connected to a second connecting sleeve (15). A limiting member (14) is sleeved in the second connecting sleeve (15). One end of the limiting member (14) extends out of the third port (13) and enters the limiting groove (18). The opening of the third port (13) away from the rotating spindle (2) is sealed by a pluggable second plug (17). The end of the second plug (17) away from the rotating spindle (2) abuts against the outer surface of the switch body (1).

9. A rotary magnetic control switch for a stove according to any one of claims 1 to 8, characterized in that, The shifter (9) has several slots (20) on the side facing the rotating spindle (2), and several blocks (19) are provided on the rotating spindle (2). When the shifter (9) is connected to the rotating spindle (2), the blocks (19) are embedded in the slots (20) so that the shifter (9) rotates synchronously with the rotating spindle (2).

10. A rotary magnetic control switch for a stove according to any one of claims 1 to 8, characterized in that, The rotating spindle (2) is provided with several sealing rings (16) for tightly fitting the switch body (1).

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