Knob, stove and smoke stove linkage system

Abstract

The application discloses a knob, a stove and a stove and smoke linkage system, the knob comprises a stator, a rotor and a start detection part, along the axis direction of the stator, the rotor is connected with the stator, and the rotor can rotate around the axis direction of the stator, along the direction of the rotor rotation, the rotor and the stator are arranged with the first gap, so that the rotor is in contact with the stator after rotating through the first gap and drives the stator to rotate, the start detection part is arranged on the rotor, and is arranged with the second gap with the stator, and is used for cooperating with the stator to detect, and the second gap is not greater than the first gap. By the start detection part, the user's starting intention can be known in advance, and it can also be used as a wake-up signal of other electronic devices, so that the waste of energy caused by the continuous power supply of other electronic devices is avoided. In addition, the rotation of the rotor is transmitted to the stator, and then transmitted to the rotary control rod of the equipment through the stator, so that the operation of the user is converted into the operation of the rotary control rod.

Description

Technical Field

[0001] This invention relates to a knob, more particularly to a knob capable of angle detection, and also to a cooktop having the knob and a cooktop-range hood linkage system. Background Technology

[0002] With technological advancements, kitchen appliances are becoming increasingly intelligent and convenient to use, and consumers are accustomed to the convenience brought by intelligent technologies, such as the linkage between the range hood and cooktop. However, currently, the linkage function of the range hood is mostly limited to the linkage between products of different manufacturers. It is difficult to achieve linkage between range hoods and cooktops between products of different brands. Although some manufacturers are currently using image recognition technology (such as cameras monitoring the position of knobs) to achieve linkage between range hoods and cooktops of different brands, it is difficult to truly commercialize this technology due to issues such as cost and energy efficiency (the camera needs to be constantly working).

[0003] This situation has created some problems. For example, if a user's range hood in a certain brand of range hood and cooktop set breaks down, and they feel that the current experience with that brand's range hood is unsatisfactory and want to switch to a different brand, but they also want to retain the range hood and cooktop linkage function, then they either continue to choose the current brand's range hood, replace the entire set with a different brand's set, or spend a lot of money to replace it with an expensive range hood with image recognition function.

[0004] Some existing technologies offer knobs with angle detection functions, but these knobs require additional wiring, which leads to installation difficulties and poor adaptability; others are equipped with batteries, but the electronic components on the knobs consume a lot of power. In addition, the detection components used in existing knobs for angle detection are bulky and inconvenient to use. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a knob, stove and range hood linkage system.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A knob comprising a stator, a rotor, and a start detection unit, the stator being for connection to a rotation control lever of a device.

[0008] Along the axial direction of the stator, the rotor is connected to the stator and is capable of rotating about the axial direction of the stator; along the direction of the rotor's rotation, the rotor and the stator are arranged with a first gap so that when the rotor passes through the first gap, it contacts the stator and drives the stator to rotate.

[0009] The start-up detection unit is disposed on the rotor and arranged with the stator with a second gap, and is used to cooperate with the stator for detection, wherein the second gap is not greater than the first gap.

[0010] In this design, the rotor and stator are connected along the stator's axial direction, creating a constraint between the rotor and stator. After the rotor passes through this first gap, its rotation is transmitted to the stator, causing the stator to rotate around its axis, thus improving transmission reliability. Furthermore, the rotor is equipped with a start-up detection unit. When the rotor rotates, the start-up detection unit contacts the stator earlier than or simultaneously with the rotor's contact with the stator. This detection unit allows for anticipation of the user's start-up intention and can also serve as a wake-up signal for other electronic devices, preventing them from being continuously powered and wasting energy. Additionally, the stator can be connected to the device's rotation control lever, transmitting the rotor's rotation to the stator, and then from the stator to the device's rotation control lever, transforming the user's operation into operation of the rotation control lever.

[0011] Preferably, the knob further includes a gear position detection unit disposed on the rotor. When the rotor rotates past the second gap, the start detection unit contacts the stator and starts the gear position detection unit.

[0012] In this solution, the rotation angle of the knob can be detected by the gear position detection unit, and the gear position detection unit is activated by the wake-up signal of the start detection unit, which can respond to the user's operation and avoid the waste of power.

[0013] Preferably, the knob further includes a circuit board connected to the rotor, and the start detection unit and the gear detection unit are both disposed on the circuit board.

[0014] In this design, both the start detection unit and the gear detection unit are mounted on a circuit board, which provides power and control to both. Furthermore, the circuit board is mounted on the rotor, which facilitates its arrangement and connection, and also allows the start detection unit and gear detection unit to rotate with the rotor.

[0015] Preferably, the start-up detection unit is a micro switch.

[0016] The stator has a detection portion extending toward the rotor, and the micro switch is provided on at least one side of the detection portion along the direction of rotation of the rotor;

[0017] Furthermore, the detection end of the micro switch and the detected part have the second gap along the direction of rotor rotation.

[0018] In this solution, a microswitch is provided on at least one side of the part being detected. When the rotor rotates, at least one microswitch can contact the part being detected, thereby detecting the rotation of the rotor. A second gap is provided between the detection end of the microswitch and the part being detected to prevent the microswitch from being accidentally triggered.

[0019] Preferably, along the direction of rotor rotation, microswitches are provided on both sides of the part being detected, and the detection ends of the two microswitches are facing the part being detected.

[0020] In this solution, microswitches are installed on both sides of the detected part. When the rotor is subjected to forward and reverse rotation by the user, one of the detected parts on both sides can detect the detected part, thereby not only activating the corresponding electronic device as a wake-up signal, but also detecting the rotation direction of the rotor.

[0021] Preferably, the start-up detection unit is a reset switch.

[0022] The stator has a detection portion extending toward the rotor, and the detection head of the reset switch extends into the detection portion; along the direction of rotation of the rotor, there is a second gap between the detection head of the reset switch and the detection portion.

[0023] In this design, the detection head of the reset switch extends into the part being detected. When the rotor rotates, the detection head of the reset switch can contact the part being detected, thereby detecting the rotation of the rotor. A second gap is provided between the detection head and the part being detected to prevent accidental contact of the detection head of the reset switch.

[0024] Preferably, the surface of the part to be detected facing the reset switch is provided with a detection groove, the detection head of the reset switch extends into the detection groove and along the direction of rotation of the rotor, and the detection head of the reset switch has the second gap between the two side walls of the detection groove.

[0025] In this scheme, when the rotor is subjected to forward and reverse rotation applied by the user, one of the two side walls of the detection slot can contact the detection head of the reset switch. The detection result of the reset switch can not only serve as a wake-up signal to activate the corresponding electronic devices, but also detect the rotation direction of the rotor.

[0026] Preferably, the gear position detection unit is an attitude sensor, which is located in the central area of ​​the circuit board, and the start detection unit is located on the edge of the circuit board.

[0027] In this solution, the rotation angle of the rotor can be detected by an attitude sensor. Specifically, when the attitude sensor is activated, it begins to detect the rotation of the rotor. Placing the attitude sensor in the center of the circuit board improves the convenience of detection and also allows for a more reasonable distribution on the circuit board with the activation detection unit located at the edge.

[0028] Preferably, the gear detection unit is a flame sensor, and a plurality of flame sensors are arranged on the circuit board along the circumferential direction of the rotor, and the sum of the detection angles of the plurality of flame sensors is not less than 360°.

[0029] In this solution, the flame sensor can not only detect the ignition status of the stove, but also, through the arrangement of multiple flame sensors, the detection range is no less than 360°, and the rotation angle of the knob can also be detected.

[0030] Preferably, the rotor has a first protrusion extending toward the stator, and the stator has a second protrusion extending toward the rotor; the first protrusion and the second protrusion have the first gap between them along the direction of rotation of the rotor.

[0031] In this scheme, through the first protrusion and the second protrusion extending towards each other, when the rotor rotates through the first gap, the first protrusion can contact the second protrusion, so that the rotor drives the mover to rotate.

[0032] Preferably, the extended end of the second protrusion serves as the detected portion of the stator.

[0033] In this solution, by adopting the above structure, the start-up detection structure between the stator and the rotor and the drive structure between the stator and the rotor can be implemented in a small space, making the structure compact and improving reliability.

[0034] Preferably, along the axial direction of the stator, the rotor is provided with a hook that engages with a locking groove in the stator.

[0035] In this solution, by adopting the above hook structure, the rotor and stator are connected along the axis of the stator, which can limit the relative position of the rotor and stator in the axis of the stator and improve the stability of the rotor driving the stator to rotate.

[0036] Preferably, along the direction of rotor rotation, the distance between the sidewall of the hook and the sidewall of the locking groove is not less than the first gap.

[0037] In this scheme, when the distance between the side wall of the hook and the side wall of the slot is the first gap, the rotor and stator can not only make contact between the first protrusion and the second protrusion, but also make contact between the side wall of the hook and the side wall of the slot, thereby forming multiple driving positions in the circumferential direction of the rotor and stator, improving the stability and reliability of the transmission.

[0038] Preferably, the circuit board of the knob is connected to the surface of the rotor opposite to the stator; the central region of the rotor is provided with a receiving cavity for accommodating the battery.

[0039] In this design, by adopting the above structural form, the circuit board, rotor, and stator are arranged sequentially along the axis of the stator, facilitating their rational arrangement and connection. Furthermore, the cavity in the central region of the rotor can accommodate the battery, allowing the battery to be arranged using the rotor's axial space, resulting in a more compact and smaller knob structure in its axial direction.

[0040] Preferably, the knob further includes a reset part that extends along the axial direction of the stator, one end of which is fixedly connected to one of the rotor and the stator, and the other end of which abuts against the other of the rotor and the stator.

[0041] In this design, a reset unit is installed between the rotor and stator. When relative rotation occurs between the rotor and stator, the reset unit deforms, accumulating a restoring force to return the rotor and stator to their initial positions. When the rotor receives a force applied by the user, the reset unit also receives that force and is in a stored state; when the user does not apply any force, the reset unit provides the force to return the rotor and stator to their initial positions. Through this reset unit and the gear position detection unit, the angular difference between the rotor and stator can be detected, ensuring that the angle through which the rotor rotates matches the angle through which the stator drives the rotation control lever to rotate.

[0042] Preferably, the reset part is an elastic sheet.

[0043] The rotor is provided with a fixing groove along the axial direction of the stator, and the stator is provided with a third protrusion protruding along its radial direction; one end of the elastic sheet is fixedly connected to the fixing groove, and the other end of the elastic sheet abuts against the third protrusion.

[0044] Along the direction of rotation of the rotor, the elastic sheet is abutted on both sides of the third protrusion.

[0045] In this scheme, the elastic plates can store energy to provide restoring force. The elastic plates set on both sides can provide restoring force when the rotor rotates clockwise and counterclockwise. At the same time, they can also push the rotor relative to the stator to return to its initial position on both sides, thus improving balance.

[0046] Preferably, the knob further includes a cover that covers the circuit board, rotor, and stator of the knob, and the cover is connected to the rotor.

[0047] In this solution, the cover can encompass the circuit board, rotor, and stator, preventing them from being contaminated or worn. At the same time, the cover also provides users with a better tactile feel.

[0048] Preferably, the knob further includes a connecting portion disposed on the surface of the stator opposite to the rotor, the connecting portion being used to connect with the rotation control lever.

[0049] A stove includes a knob as described above, the knob being connected to a flame control lever of the stove.

[0050] In this design, the stove utilizes the aforementioned knob, connecting the rotor and stator along the stator's axial direction. This creates a constraint between the rotor and stator along the stator's axial direction. Once the rotor passes through this first gap, its rotation is transmitted to the stator, causing the stator to rotate around its axis, thus improving transmission reliability. Furthermore, the rotor is equipped with a start-up detection unit. When the rotor rotates, the start-up detection unit contacts the stator earlier or simultaneously with the rotor's contact with the stator. This detection unit allows for anticipation of the user's start-up intention and can also serve as a wake-up signal for other electronic devices, preventing them from continuously receiving power and wasting energy. Additionally, the stator can connect to the stove's flame control lever, transmitting the rotor's rotation to the stator, which in turn transmits it to the flame control lever, transforming the user's operation into operation of the stove's flame control lever.

[0051] A range hood and cooktop linkage system, the system comprising a cooktop and a range hood as described above, wherein the range hood communicates with the knob.

[0052] In this solution, the range hood communicates with the knob, which can transmit the current usage status of the stove to the range hood to activate it.

[0053] The positive and progressive effects of this invention are as follows: the rotor and stator are connected along the stator's axial direction, thus restricting the rotor's rotation along the stator's axial direction. After the rotor passes through this first gap, its rotation can be transmitted to the stator, causing the stator to rotate around its axis, thereby improving the reliability of the transmission. Furthermore, the rotor is equipped with a start-up detection unit. When the rotor rotates, the start-up detection unit contacts the stator earlier than or simultaneously with the rotor's contact with the stator. This start-up detection unit can anticipate the user's start-up intention and also serve as a wake-up signal for other electronic devices, preventing them from being continuously powered and wasting energy. In addition, the stator can be connected to the device's rotation control lever, thereby transmitting the rotor's rotation to the stator, and then through the stator to the device's rotation control lever, transforming the user's operation into operation of the rotation control lever. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the structure of a knob provided in embodiments 1-5 of the present invention;

[0055] Figure 2 This is a schematic diagram of the structure of a knob provided in Embodiments 1, 3 and 5 of the present invention, wherein the cover of the knob is removed;

[0056] Figure 3 for Figure 2 A top view of the provided knob;

[0057] Figure 4 for Figure 3 Schematic diagram of the cross section at point AA;

[0058] Figure 5 for Figure 3 Schematic diagram of the cross section at point BB;

[0059] Figure 6 for Figure 3 A magnified view of the area within the middle circle;

[0060] Figure 7 This is a schematic diagram of a knob with a reset part provided in Embodiment 2 of the present invention;

[0061] Figure 8 This is a schematic diagram of the structure of a knob provided in Embodiment 4 of the present invention;

[0062] Figure 9 for Figure 8 A top view of the provided knob;

[0063] Figure 10 for Figure 9 A magnified view of the area within the middle circle;

[0064] Figure 11aThis is a schematic diagram of the rotor and attitude sensor when the knob is in its initial state in Embodiment 5 of the present invention;

[0065] Figure 11b This is a schematic diagram of the rotor and attitude sensor rotating through angle a in Embodiment 5 of the present invention. At this time, the activation detection unit contacts the stator.

[0066] Figure 11c This is a schematic diagram of the rotor and attitude sensor rotating through angles a and b in Embodiment 5 of the present invention, at which point the rotor is in contact with the stator;

[0067] Figure 11d This is a schematic diagram of the rotor and attitude sensor rotating through angles a, b, and c in Embodiment 5 of the present invention. At this time, the rotor drives the stator to rotate through angle c.

[0068] Figure 11e This is a schematic diagram of the rotor rotating relative to the stator by an angle of -b under the action of the reset part in Embodiment 5 of the present invention. At this time, the rotor and the attitude sensor are... Figure 11d Based on the rotation by -b angle, the stator is at angle c;

[0069] Figure 11f This is a schematic diagram of the rotor rotating relative to the stator by an angle of -a under the action of the reset part in Embodiment 5 of the present invention. At this time, the rotor and the attitude sensor are... Figure 11f Based on the rotation by an angle of -a, the stator is at angle c;

[0070] Figure 12 This is a schematic diagram of a knob with a flame sensor provided in Embodiment 6 of the present invention, wherein the cover of the knob has been removed;

[0071] Figure 13 This is a schematic diagram of a knob with a flame sensor provided in Embodiment 6 of the present invention;

[0072] Figure 14a This is a schematic diagram of the structure of Embodiment 6 of the present invention when the knob is set on the stove panel and the knob is in the flameout position, wherein the detection range of each flame sensor is represented by blank spaces;

[0073] Figure 14b This is a schematic diagram of the structure of Embodiment 6 of the present invention when the knob is set on the stove panel and the knob is in the high flame position, wherein the detection range of each flame sensor is represented by blank spaces;

[0074] Figure 14c This is a schematic diagram of the structure of Embodiment 6 of the present invention when the knob is set on the stove panel and the knob is in the low flame position, wherein the detection range of each flame sensor is represented by blank spaces;

[0075] Figure 15aThis is a schematic diagram of the structure of the knob in the off position in Embodiment 6 of the present invention, wherein there is an angle α between the micro switch on the right and the top cover;

[0076] Figure 15b This is a schematic diagram of the structure of the knob after it is rotated counterclockwise in Embodiment 6 of the present invention, wherein the micro switch on the right side is in contact with the top cover, and there is an angle b between the rotor and the stator;

[0077] Figure 15c This is a schematic diagram of the structure of the knob after it is rotated counterclockwise in Embodiment 6 of the present invention, wherein the knob drives the control lever to rotate by an angle c;

[0078] Figure 15d This is a schematic diagram of the structure of the knob after it is reset and rotated clockwise in Embodiment 6 of the present invention, wherein the rotor rotates clockwise by an angle b under the action of the reset part;

[0079] Figure 15e This is a schematic diagram of the structure after the knob is reset and continues to rotate clockwise in Embodiment 6 of the present invention, wherein the rotor continues to rotate clockwise by an angle 'a' under the action of the reset part.

[0080] Knob 1, Rotor 10, First protrusion 11, Rotor body 12, First mounting part 13, Hook 14, Receiving cavity 15, Fourth protrusion 16, Fixing groove 17, Stator 20, Second protrusion 21, Stator body 22, Second mounting part 23, Bottom wall 24, Snap-fit ​​groove 25, Connecting part 26, Top cover 27, Detection groove 28, Third protrusion 29, Circuit board 30, Start detection part 40, Micro switch 41, Reset switch 42, Gear detection part 50, Flame sensor 51, First flame sensor 511, Second flame sensor 512, Third flame sensor 513, Attitude sensor 52, Battery 60, Cover 70, Light-transmitting hole 71, Reset part 80, Elastic sheet 81, Arc segment 82, First gap L1, Second gap L2, Stator axis A, Rotation control lever 2, Burner head 3, Flame 4, Cooktop panel 5, Forward rotation CW, Reverse rotation CCW. Detailed Implementation

[0081] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0082] Example 1

[0083] This invention provides a knob 1, such as Figures 1-6 As shown, the knob 1 includes a stator 20, a rotor 10, and a start detection unit 40. The stator 20 is used to connect to the rotation control lever 2 of the equipment.

[0084] Along the axial direction of the stator 20, the rotor 10 is connected to the stator 20, and the rotor 10 can rotate around the axial direction of the stator 20; along the direction of rotation of the rotor 10, the rotor 10 and the stator 20 are arranged with a first gap L1, so that when the rotor 10 rotates through the first gap L1, it contacts the stator 20 and drives the stator 20 to rotate.

[0085] The start detection unit 40 is disposed on the rotor 10 and is arranged in conjunction with the stator 20 with a second gap L2, and is used to cooperate with the stator 20 for detection. The second gap L2 is not greater than the first gap L1.

[0086] The rotor 10 is connected to the stator 20 along the axial direction of the stator 20, thus restricting the rotor 10 and stator 20 along the axial direction. When the rotor 10 rotates through the first gap L1, the rotation of the rotor 10 can be transmitted to the stator 20, causing the stator 20 to rotate around its axis, thereby improving the reliability of the transmission. Furthermore, the rotor 10 is equipped with a start detection unit 40. When the rotor 10 rotates through the second gap L2, the contact between the start detection unit 40 and the stator 20 will be earlier or simultaneous with the contact between the rotor 10 and the stator 20. The start detection unit 40 can anticipate the user's start intention and can also serve as a wake-up signal for other electronic devices, preventing other electronic devices from being continuously powered, thus avoiding energy waste. In addition, the stator 20 can be connected to the device's rotation control lever 2, thereby transmitting the rotation of the rotor 10 to the stator 20, and then through the stator 20 to the device's rotation control lever 2, transforming the user's operation into operation of the rotation control lever 2.

[0087] In practical implementation, the knob 1 is connected to the device's rotation control lever 2 via its stator 20. The rotation control lever 2 is a lever that can operate the device after being driven to rotate. For example, if the device is a stove, the rotation control lever 2 can be a fire control lever, i.e., an ignition lever. In this invention, the knob 1 is connected to the fire control lever. When the user applies a rotational force to the knob 1, the knob 1 rotates, which in turn drives the fire control lever to rotate as well.

[0088] like Figure 3 and Figure 9 As shown, the knob 1 also includes a gear position detection unit 50, which is disposed on the rotor 10. When the rotor 10 rotates past the second gap L2, the activation detection unit 40 contacts the stator 20 and activates the gear position detection unit 50. The gear position detection unit 50 can detect the rotation angle of the knob 1, and the gear position detection unit 50 is activated by the wake-up signal of the activation detection unit 40, which can respond to the user's operation, avoid energy waste, and reduce power consumption.

[0089] Specifically, when the rotor 10 rotates past the second gap L2, the start detection unit 40 provided on the rotor 10 contacts the stator 20, indicating that the user is operating the device and intends to start it. The knob 1 activates other electronic devices on the knob 1 according to the trigger signal from the start detection unit 40, such as sensors for detecting the knob 1's own position, like the attitude sensor and flame sensor 51 provided in the following embodiments; sensors for communicating between the knob 1 and other devices, such as a wireless transmission module communicating with the range hood in a range hood and stove linkage system; or, the knob 1 may have other sensors, such as a color sensor for detecting flame color. By using the start detection unit 40 for detection, these sensors can be prevented from constantly operating, thus avoiding high power consumption.

[0090] like Figure 4 and Figure 5 As shown, the knob 1 also includes a circuit board 30, which is connected to the rotor 10. Both the start detection unit 40 and the gear detection unit 50 are mounted on the circuit board 30. The circuit board 30 provides power and control to the start detection unit 40 and the gear detection unit 50. Furthermore, the circuit board 30 is mounted on the rotor 10, which facilitates its arrangement and connection. Additionally, the circuit board 30 rotates with the rotor 10, causing the start detection unit 40 and the gear detection unit 50 to rotate as well.

[0091] Specifically, the circuit board 30 is typically a flat structure, on which corresponding controllers, sensors, and other electronic devices are arranged to detect and transmit the rotation angle of the knob 1. In the range hood and cooktop linkage system, the knob 1 can detect the current setting of the cooktop and send feedback to the range hood to control its operation. Thus, by using the knob 1 in this embodiment, not only can the previously mismatched range hood and cooktop be matched and linked, but the knob 1 itself also has low power consumption, avoiding the need for external circuitry or frequent battery replacements or charging, thereby improving the user experience.

[0092] like Figure 4 and Figure 5As shown, along the axial direction of the stator 20, the circuit board 30, rotor 10, and stator 20 of the knob 1 are arranged sequentially. The rotor 10 and stator 20 also have overlapping portions along the axial direction of the stator 20, making the structure of the knob 1 more compact in its axial direction and improving transmission stability. Furthermore, the stator 20 also has a detection portion extending towards the rotor 10, which is positioned opposite the activation detection portion 40. The activation detection portion 40 contacts the detection portion to achieve engagement detection with the stator 20. The rotor 10 and stator 20 overlap in the stator axis A direction, allowing the stator 20 to be closer to the circuit board 30, thereby shortening the extension length of the detection portion, simplifying manufacturing, and improving detection accuracy.

[0093] like Figure 2 and Figure 8 As shown, the rotor 10 has a first protrusion 11 extending toward the stator 20, and the stator 20 has a second protrusion 21 extending toward the rotor 10; along the direction of rotation of the rotor 10, there is a first gap L1 between the first protrusion 11 and the second protrusion 21. Through the first protrusion 11 and the second protrusion 21 extending toward each other, when the rotor 10 rotates through the first gap L1, the first protrusion 11 can contact the second protrusion 21, causing the rotor 10 to drive the rotor to rotate.

[0094] Preferably, the extended end of the second protrusion 21 serves as the detection part of the stator 20. This allows the start-up detection structure between the stator 20 and the rotor 10, as well as the drive structure of the stator 20 on the rotor 10, to be implemented in a smaller space, resulting in a compact structure and improved reliability.

[0095] like Figure 2 and Figure 8 As shown, along the axial direction of the stator 20, the rotor 10 is provided with a hook 14, which engages with the locking groove 25 of the stator 20. This allows the rotor 10 and the stator 20 to be connected along the axial direction of the stator 20, which can limit the relative position of the rotor 10 and the stator 20 in the direction of the stator axis A, and also improve the stability of the rotor 10 driving the stator 20 to rotate.

[0096] Specifically, such as Figure 4 and Figure 5As shown, the rotor 10 includes a rotor body 12, a first mounting portion 13, and a latch 14. The rotor body 12 is basically a cylindrical structure. The latch 14 is disposed on the end face of the rotor body 12 near the stator 20, and the first mounting portion 13 is disposed on the end face of the rotor body 12 away from the stator 20. The first mounting portion 13 is basically a flat, annular structure. The outer diameter of the first mounting portion 13 is larger than the outer diameter of the rotor body 12. On the one hand, this increases the mounting area, providing more space for mounting the circuit board 30. On the other hand, a corresponding mating part can also be provided on the first mounting portion 13 so that when the knob 1 has a cover 70, the mating part can engage with the cover 70, thereby connecting the cover 70 to the rotor 10.

[0097] like Figure 4 and Figure 5 As shown, the stator 20 includes a stator body 22, a second mounting portion 23, and a bottom wall 24. The stator body 22 is basically cylindrical. Along the axial direction of the stator 20, a snap-fit ​​groove 25 is provided on the stator body 22. The inner diameter of the stator body 22 is typically larger than the outer diameter of the rotor body 12, allowing a portion of the rotor body 12 to extend into the stator body 22 along the axial direction of the stator 20. The bottom wall 24 is located on the end face of the stator body 22 away from the rotor 10. A hook 14 located on the end face of the rotor body 12 can also extend into the snap-fit ​​groove 25 of the stator body 22, and the hook end of the hook 14 can hook onto the bottom wall 24, thus connecting the rotor 10 and the stator 20 along the axial direction of the stator 20. The second mounting portion 23 is located on the end face of the stator body 22 near the rotor 10. There is a gap between the second mounting portion 23 and the first mounting portion 13, and preferably they are arranged parallel to each other.

[0098] like Figure 2 and Figure 8 As shown, the first protrusion 11 and the second protrusion 21 between the rotor 10 and the stator 20 can be provided on the first mounting portion 13 and the second mounting portion 23. Specifically, the second mounting portion 23 has the second protrusion 21, and the first mounting portion 13 has the first protrusion 11. Both the first protrusion 11 and the second protrusion 21 extend along the axial direction of the stator 20. Further, the second protrusion 21 is a boss structure that protrudes from the second mounting portion 23 toward the first mounting portion 13; the first protrusion 11 is a plate-like structure, with a first protrusion 11 provided on both sides of the boss-like second protrusion 21.

[0099] Furthermore, along the direction of rotation of the rotor 10, the distance between the sidewall of the hook 14 and the sidewall of the engagement groove 25 is not less than the first gap L1. When the distance between the sidewall of the hook 14 and the sidewall of the engagement groove 25 is the first gap L1, the rotor 10 and the stator 20 can not only form contact between the first protrusion 11 and the second protrusion 21, but also between the sidewall of the hook 14 and the sidewall of the engagement groove 25, thereby forming multiple driving positions in the circumferential direction of the rotor 10 and the stator 20, improving the stability and reliability of the transmission.

[0100] In practical implementation, along the direction of rotor 10 rotation, the first protrusion 11 and the second protrusion 21 can be used as components for the rotor 10 to drive the stator 20 to rotate, and the hook 14 and the locking groove 25 can also be used as components for the rotor 10 to drive the stator 20 to rotate, or both can be used simultaneously as components for the rotor 10 to drive the stator 20 to rotate. Specifically, when the first protrusion 11 and the second protrusion 21 are used as driving components, along the direction of rotor 10 rotation, the distance between the second protrusion 21 and the first protrusion 11 located on both sides thereon is the first gap L1; the distance between the side wall of the hook 14 and the side wall of the locking groove 25 is greater than the first gap L1. When the hook 14 and the locking groove 25 are used as driving components, along the direction of rotor 10 rotation, the distance between the side wall of the hook 14 and the side wall of the locking groove 25 is the first gap L1; the distance between the second protrusion 21 and the first protrusion 11 located on both sides thereon is greater than the first gap L1. When both are used as driving parts, along the direction of rotation of rotor 10, the distance between the second protrusion 21 and the first protrusion 11 located on both sides thereon, and the distance between the side wall of hook 14 and the side wall of snap groove 25 are all the first gap L1.

[0101] like Figure 2 and Figure 4 As shown, there are multiple pairs of hooks 14 and slots 25, which are evenly arranged along the circumferential direction of the stator 20, so that the rotor 10 can drive the stator 20 evenly in the circumferential direction of the stator 20.

[0102] like Figure 4 and Figure 5 As shown, the circuit board 30 of the knob 1 is connected to the surface of the rotor 10 facing away from the stator 20; a receiving cavity 15 is provided in the central region of the rotor 10 for accommodating the battery 60. The circuit board 30, rotor 10, and stator 20 are arranged sequentially along the axial direction of the stator 20, facilitating their reasonable arrangement and connection. Furthermore, the receiving cavity 15 in the central region of the rotor 10 can accommodate the battery 60, thereby utilizing the axial space of the rotor 10 to arrange the battery 60, making the knob 1 more compact and smaller in size in its axial direction.

[0103] Specifically, the circuit board 30 is connected to the surface of the first mounting portion 13 facing away from the stator 20. The first mounting portion 13 and the rotor body 12 form the receiving cavity 15, and the battery 60 is disposed in the receiving cavity 15 and connected to the circuit board 30 facing the surface of the stator 20.

[0104] like Figure 1 and Figure 13 As shown, the knob 1 also includes a cover 70, which covers the circuit board 30, rotor 10 and stator 20 of the knob 1, and is connected to the rotor 10. The cover 70 can cover the circuit board 30, rotor 10 and stator 20 to prevent them from being contaminated or worn, and at the same time, the cover 70 can also provide the user with a better tactile feel.

[0105] like Figures 1-13 As shown, the knob 1 also includes a connecting part 26, which is disposed on the surface of the stator 20 away from the rotor 10, and is used to connect with the rotation control lever 2.

[0106] Specifically, the circuit board 30 is completely housed in the cover 70 to prevent contaminants such as oil from contaminating the circuit board 30. Most of the structure of the rotor 10 and the stator 20 is also housed in the cover 70. The connection part 26 is exposed outside the cover 70 so that the user can operate the connection part 26 to connect the knob 1 to the fire control lever of the stove.

[0107] In this embodiment, when the rotor 10 rotates under the force applied by the user, or when the cover 70 rotates under the force applied by the user, the rotor 10 first rotates to an angle corresponding to the first gap L1. At this time, the activation detection unit 40 contacts the stator 20, and the gear detection unit 50 and other related electronic devices are activated and begin angle detection. The rotor 10 continues to rotate to an angle corresponding to the second gap L2, at which point the rotor 10 contacts the stator 20. Specifically, the first protrusion 11 and the second protrusion 21 contact each other, and the rotor 10 begins to drive the stator 20. Subsequently, the rotor 10 drives the stator 20 to rotate, and the rotation control lever 2 rotates synchronously with the stator 20. When the user stops applying force, the gear detection unit 50 completes its detection, and the knob 1 can send the corresponding gear information to the range hood via the wireless communication module, and the range hood starts working.

[0108] Furthermore, during this process, the signal indicating contact between the start detection unit 40 and the stator 20 can also be fed back to the range hood, allowing the range hood to enter the start-up preparation phase. Once the gear detection unit 50 returns a positive result indicating the range hood is running, the range hood begins operation.

[0109] Furthermore, after the current detection of knob 1 is completed, the gear position detection unit 50 and other related electronic components can enter a standby or low-power state, waiting for the detection unit 40 to be triggered again to restart. Alternatively, during the current cooking cycle of the stove, the gear position detection unit 50 and other related electronic components can continue to detect after the first activation, and then turn off after the current cooking cycle is completed.

[0110] Example 2

[0111] This embodiment provides a knob 1, which has the same structure as the knob 1 in Embodiment 1. Based on the knob 1 in Embodiment 1, it also has a reset part 80. The reset part 80 extends along the axial direction of the stator 20. One end of the reset part 80 is fixedly connected to one of the rotor 10 and the stator 20, and the other end of the reset part 80 abuts against the other of the rotor 10 and the stator 20.

[0112] A reset section 80 is provided between the rotor 10 and the stator 20. When relative rotation occurs between the rotor 10 and the stator 20, the reset section 80 deforms, accumulating a restoring force to restore the rotor 10 and the stator 20 to their initial positions. When the rotor 10 receives a force applied by the user, the reset section 80 is also subjected to that applied force and is in a stored state; when the user does not apply a force, the reset section 80 provides a force to restore the rotor 10 and the stator 20 to their initial positions. Through this reset section 80 and the gear detection section 50, the angular difference between the rotor 10 and the stator 20 can be detected, thereby ensuring that the angle through which the rotor 10 rotates is consistent with the angle through which the stator 20 drives the rotation control lever 2 to rotate.

[0113] like Figure 7 As shown, the reset part 80 is an elastic sheet 81. The rotor 10 is provided with a fixing groove 17 opened along the axial direction of the stator 20. The stator 20 is provided with a third protrusion 29 protruding along its radial direction. One end of the elastic sheet 81 is fixedly connected to the fixing groove 17, and the other end of the elastic sheet 81 abuts against the third protrusion 29. Along the direction of rotation of the rotor 10, elastic sheets 81 abut against both sides of the third protrusion 29.

[0114] The elastic sheet 81 can store energy to provide restoring force. The elastic sheet 81 on both sides can provide restoring force when the rotor 10 rotates clockwise and counterclockwise. At the same time, it can also push the rotor 10 relative to the stator 20 to return to the initial position on both sides, thus improving balance.

[0115] Specifically, such as Figure 7 and Figure 12 As shown, the reset unit 80 and the start detection unit 40 are located at opposite ends of the knob 1.

[0116] like Figure 7 and Figure 12 As shown, the first mounting portion 13 of the rotor 10 is provided with a fourth protrusion 16 extending toward the second mounting portion 23 of the stator 20, and a fixing groove 17 is provided on the fourth protrusion 16 along the direction of the stator axis A. The stator body 22 of the stator 20 has a third protrusion 29, which protrudes along the radial direction of the stator 20; and, along the axial direction of the stator 20, the circumferential width of the third protrusion 29 toward the end of the first mounting portion 13 is greater than the circumferential width of the third protrusion 29 away from the end of the first mounting portion 13, so that when the elastic sheets 81 located on both sides deform, the change in circumferential width can prevent the elastic sheets 81 from detaching from the third protrusion 29.

[0117] Preferably, the elastic sheet 81 has an arcuate segment 82 that abuts against the circumferential width variation of the third protrusion 29.

[0118] In this embodiment, the reset unit 80 provides a force to restore the rotor 10 and stator 20 to their initial relative positions. When the rotor 10 rotates under the force applied by the user, or when the cover 70 rotates under the force applied by the user, the rotor 10 continues to rotate to an angle corresponding to the second gap L2. The rotor 10 contacts the stator 20 and drives the stator 20 to rotate by the corresponding angle. At this time, the stator 20 and the stove's fire control lever are at this corresponding angle. When the user stops applying force, the reset unit 80 restores the rotor 10 and stator 20 to their initial relative positions, at which point the rotor 10 is also at this corresponding angle. During the reset process, the activation detection unit 40 disengages from the stator 20. This disengagement signal can serve as a signal for the gear detection unit 50 and other corresponding electronic devices to be turned off, in standby mode, or in low power mode.

[0119] Furthermore, when the first gap L1 is greater than the second gap L2, there is an angle difference between the angle through which the rotor 10 and the stator 20 rotate. That is, the difference between the angle corresponding to the first gap L1 and the angle corresponding to the second gap L2 that the rotor 10 rotates more than the stator 20 can be detected by the reset unit 80, making the detection more accurate and simplifying the complexity of the calculation.

[0120] Example 3

[0121] This embodiment provides a knob 1. Based on embodiment 1 or embodiment 2, the knob 1 in this embodiment further provides a specific form of the start detection unit 40 of the knob 1.

[0122] like Figures 2-7As shown, the start detection unit 40 is a micro switch 41, the stator 20 has a detection part extending toward the rotor 10, and the micro switch 41 is provided on at least one side of the detection part along the rotation direction of the rotor 10; and there is a second gap L2 between the detection end of the micro switch 41 and the detection part along the rotation direction of the rotor 10.

[0123] A microswitch 41 is provided on at least one side of the part being detected. When the rotor 10 rotates, at least one microswitch 41 can contact the part being detected, thereby detecting the rotation of the rotor 10. A second gap L2 is provided between the detection end of the microswitch 41 and the part being detected to prevent the microswitch 41 from being accidentally triggered.

[0124] Preferably, microswitches 41 are provided on both sides of the detected part along the rotation direction of the rotor 10, and the detection ends of the two microswitches 41 face the detected part. With microswitches 41 provided on both sides of the detected part, when the rotor 10 is subjected to forward and reverse rotation applied by the user, one of the detected parts on both sides can detect the detected part, thereby not only activating the corresponding electronic device as a wake-up signal, but also detecting the rotation direction of the rotor 10.

[0125] like Figures 5-7 As shown, the second protrusion 21 of the stator 20 is provided with a top cover 27, and the two ends of the top cover 27 along the circumference of the rotor 10 serve as the detection portions of the microswitches 41 located on both sides thereon. The first mounting portion 13 of the rotor 10 has a slot at the position of the second protrusion 21, and the second protrusion 21 extends in the slot so that the top cover 27 and the microswitches 41 on both sides are at the same horizontal position in the axial direction of the rotor 10. Correspondingly, the circuit board 30 also has a slot at the position of the slot, and the two microswitches 41 are respectively disposed at the edge of the slot of the circuit board 30. The first protrusion 11 extends at the edge of the slot of the first mounting portion 13.

[0126] Example 4

[0127] This embodiment provides a knob 1. Based on embodiment 1 or embodiment 2, the knob 1 in this embodiment further provides another specific form of the start detection unit 40 of the knob 1.

[0128] like Figure 8 , Figure 9 and Figure 10 As shown, the start detection unit 40 is a reset switch 42, the stator 20 has a detection part extending toward the rotor 10, and the detection head of the reset switch 42 extends into the detection part; along the direction of rotation of the rotor 10, there is a second gap L2 between the detection head of the reset switch 42 and the detection part.

[0129] The detection head of the reset switch 42 extends into the part being detected. When the rotor 10 rotates, the detection head of the reset switch 42 can contact the part being detected, thereby detecting the rotation of the rotor 10. A second gap L2 is provided between the detection head and the part being detected to prevent the detection head of the reset switch 42 from being accidentally contacted.

[0130] like Figure 8 , Figure 9 and Figure 10 As shown, a detection groove 28 is provided on the surface of the part to be detected facing the reset switch 42. The detection head of the reset switch 42 extends into the detection groove 28 and along the direction of rotation of the rotor 10, there is a second gap L2 between the detection head of the reset switch 42 and the two side walls of the detection groove 28.

[0131] When the rotor 10 is subjected to forward and reverse rotation applied by the user, one of the two side walls of the detection groove 28 can contact the detection head of the reset switch 42. The detection result of the reset switch 42 can not only serve as a wake-up signal to activate the corresponding electronic device, but also detect the rotation direction of the rotor 10.

[0132] like Figure 10 As shown, the second protrusion 21 of the stator 20 is provided with a detection groove 28, which serves as the detection portion of the reset switch 42 along the two inner sidewalls of the rotor 10 in the circumferential direction. The first mounting portion 13 of the rotor 10 is provided with a slot at the position of the second protrusion 21, and the second protrusion 21 extends in the slot so that the two inner sidewalls of the detection groove 28 and the reset switch 42 are at the same horizontal position in the axial direction of the rotor 10. Correspondingly, the circuit board 30 is also provided with a slot at the position of the slot, and the reset switch 42 is disposed at the bottom of the slot of the circuit board 30. The first protrusion 11 extends at the edge of the slot of the first mounting portion 13.

[0133] Example 5

[0134] This embodiment provides a knob 1. Based on any of the embodiments 1-4 above, the knob 1 further provides a specific form of the gear detection unit 50.

[0135] The gear position detection unit 50 is an attitude sensor, which is located in the central area of ​​the circuit board 30, while the activation detection unit 40 is located at the edge of the circuit board 30. The attitude sensor can detect the rotation angle of the rotor 10. Specifically, when the attitude sensor is activated, it begins to detect the rotation of the rotor 10. Positioning the attitude sensor in the central area of ​​the circuit board 30 improves the convenience of detection and also allows for a more reasonable distribution on the circuit board 30 along with the activation detection unit 40 located at the edge.

[0136] Preferably, the position of the attitude sensor on the rotor 10 coincides with the rotation axis of the rotor 10.

[0137] In practical implementation, a 6-axis attitude sensor (gyroscope + accelerometer) can be preferred to detect the corresponding displacement and angle changes along the XYZ axes. For ease of calculation, the Z-axis of the coordinate system of the 6-axis attitude sensor can be set to be coaxial with the 3 rotors 10 in the smart knob 1, and the XY plane can be parallel to the horizontal plane.

[0138] In this embodiment, an angle is detected by an attitude sensor, and the stove's power setting is determined based on the angle detected by the attitude sensor, thereby controlling the range hood's operating mode. Specifically, when the angle detected by the attitude sensor is within the range of the stove's high flame setting, the range hood operates in high-power mode; when the angle detected by the attitude sensor is within the range of the stove's low flame setting, the range hood operates in low-power mode.

[0139] like Figures 11a to 11f The diagram shows a simplified process of angular changes in the rotor 10 and attitude sensor 52 during the operation of the knob 1 from the moment the user applies the operation until the operation is completed. To illustrate the rotation process, M represents the rotor 10 marker and N represents the attitude sensor 52 marker. Figure 11a As shown, this is the initial state of knob 1. This state can be the state when knob 1 is in the off position when the stove is first started, or the state when knob 1 is operated and waiting for the next operation.

[0140] Specifically, the detection process of the knob 1 with attitude sensor 52 is as follows:

[0141] S110: When the rotor 10 is subjected to an external force and rotates in the positive direction by a first angle +a, the activation detection unit 40 contacts the stator 20, and the attitude sensor 52 is activated. For example... Figure 11b As shown, both the rotor 10 and the attitude sensor 52 rotate through an angle of +a in the positive direction, that is, the rotor 10 rotates through the second gap L2. At this time, the activation detection unit 40 contacts the stator 20, and the attitude sensor 52 is awakened. Therefore, the attitude sensor 52 does not detect and record +a. Specifically, the activation detection unit 40 contacts the stator 20 by the first micro switch 41 contacting the stator 20.

[0142] S210: When the rotor 10 is continuously subjected to an external force and continues to rotate at the second angle +b, the rotor 10 contacts the stator 20 and begins to drive the stator 20 to rotate. For example... Figure 11c As shown, both the rotor 10 and the attitude sensor 52 rotate through an angle of +a+b in the positive direction, and the attitude sensor 52 detects and records the +b angle rotated through. That is, the rotor 10 rotates from the initial position through the first gap L1, which corresponds to the +a+b angle.

[0143] S310: When the rotor 10 drives the stator 20 to rotate by a third angle +c, the rotor 10 is not subjected to external force and stops rotating in the forward direction. For example... Figure 11d As shown, both the rotor 10 and the attitude sensor 52 rotate through an angle of +a+b+c in the positive direction, and the attitude sensor 52 detects and records the angle of +c. During this process, the rotor 10 drives the stator 20 to rotate through an angle of +c, and the control lever 2 of the stove rotates through an angle of +c along with the stator 20.

[0144] S410: When the rotor 10 rotates in the reverse direction by the fourth angle -b, the start detection unit 40 begins to disengage from the stator 20, and the attitude sensor 52 sends the second angle +b, the third angle +c, and the fourth angle -b to the controller and then goes into sleep mode. Figure 11e As shown, in step S310, after the rotor 10 drives the stator 20 to rotate by a third angle +c, the user's operation ends and the force applied to the knob 1 stops. Under the action of the reset unit 80, the rotor 10 rotates in the opposite direction relative to the stator 20. During this process, the rotor 10 and the attitude sensor 52 first rotate in the opposite direction by an angle -b, and the attitude sensor 52 detects and records the angle -b rotated. And as shown... Figure 11f As shown, under the action of the reset unit 80, the rotor 10 continues to rotate in the opposite direction relative to the stator 20 until it rotates through an angle of -a, restoring the rotor 10 to its initial state relative to the stator 20. From... Figures 11e to 11f During the process, the detection unit 40 is activated and disengaged from the stator 20. At this moment, the rotor 10 is detected to have rotated in the opposite direction by an angle of -b and recorded. Subsequently, the attitude sensor 52 goes into sleep mode. Throughout this reset process, the attitude sensor 52 detects and records the angle of rotation of -b.

[0145] S510: The controller calculates the rotation angle of the stator 20 based on the second angle +b, the third angle +c, and the fourth angle -b. Therefore, the rotation angle of the stator 20 calculated based on the second angle +b, the third angle +c, and the fourth angle -b is +c, which matches the actual rotation angle of the stator 20 and can also accurately reverse the rotation angle of the control lever 2.

[0146] When the start detection unit 40 contacts the stator 20, the attitude sensor 52 is activated; when the start detection unit 40 disengages from the stator 20, the attitude sensor 52 goes into sleep mode. Thus, after the current operation of the knob 1 is completed, the attitude sensor 52 goes into sleep mode again and can be activated again during the next operation, further reducing power consumption. Furthermore, before the attitude sensor 52 goes into sleep mode when the start detection unit 40 disengages from the stator 20, the detection value of the attitude sensor 52 is acquired. When the rotor 10 is not subjected to external force, the rotor 10 can rotate in the opposite direction. The rotation angle of the stator 20 can be accurately calculated using the second, third, and fourth angles.

[0147] After the previous adjustment using knob 1, the user may need to make further adjustments based on the previous one. For example, with a stove, the user may need to adjust the heat level during use. During subsequent adjustments, the activation detection unit 40 can restart the attitude sensor 52, which will monitor the detection process, which is basically the same as in steps S110 to S510.

[0148] Example 6

[0149] This embodiment provides a knob 1. Based on any of the embodiments 1-4 above, the knob 1 further provides another specific form of the gear detection unit 50 of the knob 1.

[0150] like Figure 12 As shown, the gear detection unit 50 is a flame sensor 51. Multiple flame sensors 51 are arranged on the circuit board 30 along the circumferential direction of the rotor 10, and the sum of the detection angles of the multiple flame sensors 51 is not less than 360°.

[0151] In this solution, the flame sensor 51 can not only detect the ignition status of the stove, but also, through the arrangement of multiple flame sensors 51, its detection range is not less than 360°, and the current setting of the stove can be determined by detecting the flame intensity.

[0152] like Figure 12 As shown, three flame sensors 51 are arranged circumferentially on the rotor 10, each with a detection range of 120°. Figure 13 As shown, the side wall of the cover 70 of the knob 1 is provided with a light-transmitting hole 71. Each flame sensor 51 communicates with the outside world through the light-transmitting hole 71 to detect flames. Figure 14a , Figure 14b and Figure 14c As shown, three flame sensors 51 are arranged circumferentially on the rotor 10, namely a first flame sensor 511, a second flame sensor 512, and a third flame sensor 513, each with a detection range of 120°. Specifically, Figure 14a , Figure 14b and Figure 14c The shaded area represents the region outside the detection range of the flame sensor 51. Each of the three flame sensors 51 has a detection range of 120°, for a total detection range of 360°. Figure 14a In the middle, knob 1 is in the near-off position, at which time the first flame sensor 511 can detect flame 4; Figure 14b When knob 1 is turned 90° (within the high-fire range and at the maximum fire position), both the first flame sensor 511 and the second flame sensor 512 can detect flame 4; Figure 14cWhen knob 1 is turned 180° (within the low flame range and at the minimum flame position), both the second flame sensor 512 and the third flame sensor 513 can detect flame 4.

[0153] like Figures 15a-15e The diagram illustrates the process of turning knob 1 from the flameout position to activating the stove and completing the rotation of knob 1 during the ignition operation. Figure 15a As shown, knob 1 is in the off position (the stove is not turned on), and there is a second gap L2 between the microswitch 41 on the right and the top cover 27. Figure 15a Angle a in the diagram. When the user operates knob 1, rotor 10 rotates counterclockwise, as shown. Figure 15b As shown, the microswitch 41 on the right side of the rotor 10 contacts the top cover 27 and is triggered, activating the three flame sensors 51. There is a difference between the first gap L1 and the second gap L2 between the rotor 10 and the stator 20, i.e. Figure 15b Angle b in the diagram. The user continues to operate knob 1, causing rotor 10 to rotate counter-clockwise, as... Figure 15c As shown, the rotor 10 drives the stator 20 to rotate by an angle c, and the control lever 2 also rotates by an angle c, thus starting the stove and generating a flame. Subsequently, the user stops operating the knob 1, the external force applied to the knob 1 disappears, and under the action of the reset part 80, the rotor 10 rotates clockwise relative to the stator 20, as shown. Figure 15d As shown, the rotor 10 rotates an angle b relative to the stator 20. At this point, the rotor 10 separates from the stator 20, and the microswitch 41 on the right side is about to separate from the top cover 27. Then, under the action of the reset part 80, the rotor 10 continues to rotate clockwise, as... Figure 15e As shown, the rotor 10 continues to rotate relative to the stator 20 by an angle 'a', and the micro switch 41 separates from the top cover 27. At this time, the relative position between the rotor 10 and the stator 20 is the same as the relative position between the rotor 10 and the stator 20 when the knob 1 is in the off state. At this stage, one rotation of the knob 1 is completed, and the current detection values ​​of the three flame sensors 51 can be obtained.

[0154] Example 7

[0155] This embodiment provides a stove, which includes a knob 1 as described in any of the above embodiments, and the knob 1 is connected to the stove's fire control lever.

[0156] The cooktop utilizes the aforementioned knob 1, connecting the rotor 10 and stator 20 along the axial direction of the stator 20. This creates a constraint between the rotor 10 and stator 20 along the axial direction. When the rotor 10 passes through the first gap L1, its rotation is transmitted to the stator 20, causing the stator 20 to rotate around its axis, thus improving transmission reliability. Furthermore, the rotor 10 is equipped with a start-up detection unit 40. When the rotor 10 rotates, the start-up detection unit 40 contacts the stator 20 earlier or simultaneously with the rotor 10 contacts the stator 20. The start-up detection unit 40 can anticipate the user's start-up intention and also serve as a wake-up signal for other electronic devices, preventing them from continuously supplying power and wasting energy. Additionally, the stator 20 can be connected to the cooktop's flame control lever, transmitting the rotation of the rotor 10 to the stator 20, and then through the stator 20 to the flame control lever, transforming the user's operation into operation of the cooktop's flame control lever.

[0157] Example 8

[0158] This embodiment provides a cooktop and range hood linkage system, which includes a cooktop and a range hood as described above. The range hood communicates with a knob 1. The knob 1 can transmit the current usage status of the cooktop to the range hood to activate the range hood.

[0159] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A knob, characterized in that The knob comprises a stator, a rotor and a start detection part, the stator is used to connect with a rotary control lever of an equipment, The rotor is connected with the stator along the axial direction of the stator and can rotate around the axial direction of the stator; along the rotating direction of the rotor, the rotor is arranged with the stator in a first gap fit, and the rotor is in contact with the stator after rotating through the first gap to drive the stator to rotate; The start detection part is arranged on the rotor and arranged with the stator in a second gap fit, and is used to detect with the stator, the second gap is not greater than the first gap; The knob further comprises a gear detection part, the gear detection part is arranged on the rotor, and the start detection part is in contact with the stator and starts the gear detection part after rotating through the second gap.

2. The knob of claim 1, wherein The knob further comprises a circuit board, the circuit board is connected with the rotor, and the start detection part and the gear detection part are arranged on the circuit board.

3. The knob of claim 1, wherein The start detection part is a micro switch, The stator has a detected part extending to the rotor, at least one side of the detected part is provided with the micro switch along the rotating direction of the rotor; And along the rotating direction of the rotor, the second gap is provided between the detection end of the micro switch and the detected part.

4. The knob of claim 3, wherein Along the rotating direction of the rotor, both sides of the detected part are provided with the micro switch, and the detection ends of the two micro switches are both towards the detected part.

5. The knob of claim 1, wherein The start detection part is a reset switch, The stator has a detected part extending to the rotor, the detection head of the reset switch extends into the detected part; along the rotating direction of the rotor, the second gap is provided between the detection head of the reset switch and the detected part.

6. The knob of claim 5, wherein The surface of the detected part towards the reset switch is provided with a detection groove, the detection head of the reset switch extends into the detection groove, and along the rotating direction of the rotor, the second gap is provided between the detection head of the reset switch and the two side walls of the detection groove.

7. The knob of claim 2, wherein The gear detection part is a posture sensor, the posture sensor is arranged on the central region of the circuit board, and the start detection part is arranged on the edge portion of the circuit board.

8. The knob of claim 2, wherein The gear detection part is a flame sensor, a plurality of the flame sensors are arranged on the circuit board along the circumferential direction of the rotor, and the sum of the detection angles of the plurality of the flame sensors is not less than 360°.

9. The knob of claim 1, wherein The rotor has a first protrusion extending to the stator, and the stator has a second protrusion extending to the rotor; along the rotating direction of the rotor, the first protrusion and the second protrusion have the first gap therebetween.

10. The knob of claim 9, wherein The extension end of the second protrusion serves as the detected part of the stator.

11. The knob of claim 1, wherein Along the axial direction of the stator, the rotor is provided with a hook, and the hook is hooked in a clamping groove of the stator.

12. The knob of claim 11, wherein Along the rotating direction of the rotor, the distance between the side wall of the hook and the side wall of the clamping groove is not less than the first gap.

13. The knob of claim 1, wherein The circuit board of the knob is connected to the surface of the rotor away from the stator; the central region of the rotor is provided with a receiving cavity for accommodating a battery.

14. The knob of claim 1, wherein The knob further comprises a reset part extending along the axial direction of the stator, one end of the reset part is fixedly connected with one of the rotor and the stator, and the other end of the reset part abuts against the other one of the rotor and the stator.

15. The knob of claim 14, wherein The reset part is an elastic sheet, The rotor is provided with a fixing groove opened along the axial direction of the stator, and the stator is provided with a third protrusion protruding along the radial direction thereof; one end of the elastic sheet is fixedly connected with the fixing groove, and the other end of the elastic sheet abuts against the third protrusion. Along the direction of rotation of the rotor, the two sides of the third protrusion abut against the elastic sheets.

16. The knob of claim 1, wherein The knob further comprises a cover, the cover covers the circuit board, the rotor and the stator of the knob, and the cover is connected with the rotor.

17. The knob of claim 1, wherein The knob further comprises a connecting part, the connecting part is arranged on the surface of the stator away from the rotor, and the connecting part is used for being connected with the rotary control rod.

18. A hob, characterized in that The cooking appliance comprises the knob as claimed in any one of claims 1-17, and the knob is connected with the firepower adjusting rod of the cooking appliance.

19. A hob-cooker linkage system, characterized in that The smoke-cooking linkage system comprises the cooking appliance as claimed in claim 18 and an extractor hood, and the extractor hood communicates with the knob. The smoke-cooking linkage system comprises the cooking appliance as claimed in claim 18 and an extractor hood, and the extractor hood communicates with the knob.

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