Magnetic control light guide knob

Abstract

The invention relates to a magnetic control light guide knob, and belongs to the technical field of household appliances, the magnetic control light guide knob comprises a rotating part and a fixed part, the fixed part is provided with a first magnetic suction part, and the rotating part is provided with a second magnetic suction part and a third magnetic suction part; the rotating piece is rotationally connected with the fixed piece, and the rotating piece can move by a set distance in the direction close to the fixed piece; the first magnetic attraction piece can attract a magnet in the stove, so that the fixing piece is attracted to the stove; the second magnetic attraction piece and the first magnetic attraction piece repel each other so as to provide reset force for the rotating piece. And the third magnetic attraction piece can participate in forming magnetic field change capable of being detected by a magnetic field sensor in the cooker when the rotating piece rotates and / or moves, so that the magnetic field sensor outputs a signal corresponding to the state of the rotating piece. The rotary part has the advantages that the problems of mechanical fatigue, plastic deformation and abrasion caused by repeated pressing can be effectively solved, and the rotary part can still be stably reset in the long-term use process.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a magnetically controlled light-guiding knob. Background Technology

[0002] Traditionally, most gas stove knobs in homes are controlled by mechanical mechanisms. These knobs typically contain latches, springs, and other mechanical components to enable rotation and reset. However, under prolonged exposure to high temperatures and cooking fumes, these components are prone to aging and deformation, leading to problems such as slippage and jamming. This results in inaccurate flame control and may even cause the stove to fail to turn properly, resulting in a continuous gas leak. If the gas supply is not properly regulated, the air-gas mixture may become unbalanced, leading to incomplete combustion and the production of toxic gases such as carbon monoxide, posing a serious safety hazard.

[0003] In addition, there are usually gaps where traditional mechanical knobs connect to the cooktop, allowing grease and broth to seep in and create hard-to-clean areas. Long-term accumulation of grease not only corrodes the metal parts of the knob base, accelerating its aging, but can also breed bacteria, affecting kitchen hygiene.

[0004] To address the problems associated with mechanical knobs, existing technologies have developed knobs that utilize magnetic control principles to control flame on / off and adjust flame intensity. For example, patents such as CN109274364A (disclosed a method, device, and storage medium for detecting the pressing of a magnetically controlled knob), CN113238605A (disclosed a knob assembly, electrical appliance, knob control method, control device, and storage medium), and CN105977067A (disclosed a knob assembly for a household appliance, a control method for the household appliance and the knob assembly) all propose technical solutions for flame control using magnetically attracted knobs.

[0005] However, existing magnetic knobs still have the following problems: some magnetic knobs are not designed to be pressed to ignite, which may lead to misoperation or safety risks, such as a split knob disclosed in announcement number CN209514452U. Even though some magnetic control knobs can be pressed and rotated to start the fire, such as the magnetic control knob assembly and electrical equipment disclosed in announcement number CN108768377A, they still use components such as springs, elastic cards or elastic pads inside, and still have problems such as poor durability, knob slippage or jamming, and complicated maintenance. Summary of the Invention

[0006] To address the aforementioned issues, this application provides a magnetically controlled light-guiding knob.

[0007] The magnetically controlled light-guiding knob provided in this application adopts the following technical solution: A magnetically controlled light-guiding knob includes a rotating component and a fixing component. The fixing component is provided with a first magnetic attraction component, and the rotating component is provided with a second magnetic attraction component and a third magnetic attraction component. The rotating component is rotatably connected to the fixed component, and the rotating component can move a set distance toward the fixed component; The first magnetic component can attract the magnet inside the stove, so that the fixing component is attached to the stove. The second magnetic attractor repels the first magnetic attractor to provide a restoring force to the rotating member; The third magnetic attractor can participate in forming a magnetic field change that can be detected by the magnetic field sensor inside the stove when the rotating component rotates and / or moves, so that the magnetic field sensor outputs a signal corresponding to the state of the rotating component.

[0008] By adopting the above technical solution, when in use, the user places the knob in the designated installation position of the stove, so that the fixing part is in contact with the stove panel. At this time, the first magnetic suction part set in the fixing part and the magnetic positioning part set inside the stove attract each other, so that the knob is reliably positioned and fixed on the stove. When the user presses down on the rotating component and rotates it by a predetermined angle, the rotating component and the third magnetic component mounted on it move synchronously towards the stove, and the angle changes accordingly. The magnetic field state formed by the third magnetic component also changes accordingly. A magnetic field sensor installed inside the stove detects the magnetic field state and transmits the detected signal to the control module. The control module determines that the knob is in the ignition operation state based on the signal, and then outputs an ignition control command to make the stove perform the ignition operation.

[0009] After ignition, the user releases the rotating component. Under the repulsive force generated by the mutual repulsion between the second and first magnetic components, the rotating component resets in a direction away from the stove. At this time, the rotation of the rotating component in the reset state causes different magnetic field changes in the third magnetic component. The magnetic field sensor continuously detects the magnetic field changes and outputs corresponding angle signals to the control module. The control module adjusts the gas on / off or gas flow based on the angle signals, thereby achieving continuous adjustment of the flame size.

[0010] By incorporating mutually repelling first and second magnetic components, a restoring force is provided to the rotating component, thus replacing the traditional mechanical structure that relies on springs, elastic cards, or elastic pads for restoring. Since magnetic restoring eliminates the need for elastic metal components, it effectively avoids mechanical fatigue, plastic deformation, and wear caused by repeated pressing, ensuring stable restoring of the rotating component even during long-term use.

[0011] The magnetic repulsion force generated by the magnetic ring does not significantly decrease with the number of presses under normal use conditions. Compared with the characteristic of springs being prone to fatigue failure, it can maintain a basically constant restoring force during long-term use of the knob, which is conducive to maintaining a consistent and reliable operating feel when pressing and rotating the knob.

[0012] The reset is achieved by using a magnetic ring repulsion structure, which does not rely on precise mechanical fit and elastic components. It is not sensitive to oil, water vapor and high temperature environments, and is especially suitable for use in high oil fume and high humidity environments such as kitchens. It reduces problems such as jamming and malfunction caused by oil intrusion or water vapor corrosion, and improves the overall reliability of the knob.

[0013] By replacing the magnetic rings with different specifications and magnetic properties, the pressing force and reset force of the rotating parts can be easily adjusted without making major changes to the internal structure of the knob. This allows for flexible adaptation to different models of stoves or different users' needs for operating feel, improving the product's versatility and design flexibility.

[0014] The first magnetic component attracts the internal magnetic positioning element of the cooktop, enabling quick positioning and fixation of the knob. It also acts as a repellent component against the second magnetic component, providing a restoring force for the rotating part, achieving "one magnet, multiple uses." This structure effectively reduces the number of parts, simplifies the internal structural design, and lowers assembly difficulty. Furthermore, it eliminates the need to handle springs and other elastic components during knob disassembly and reinstallation, making operation more convenient and facilitating daily cleaning and maintenance.

[0015] Optionally, the rotating component includes a rotating housing, the rotating housing having a first snap-fit ​​ring groove; The fastener includes a fixing base, and the fixing base is connected to a first elastic snap-fit ​​portion; The first elastic snap-fit ​​part snaps into the first snap-fit ​​ring groove, and the first elastic snap-fit ​​part can slide a set distance along the groove width direction of the first snap-fit ​​groove.

[0016] By adopting the above technical solution, during installation, the operator presses the first elastic snap-fit ​​part inward, causing it to undergo elastic deformation and enter the first snap-fit ​​ring groove. Then, the operator releases the first elastic snap-fit ​​part, which snaps into the first snap-fit ​​ring groove under its own elastic restoring force, thereby completing the rotational connection between the fixed part and the rotating part.

[0017] Since the first elastic snap-fit ​​part and the first snap-fit ​​ring groove adopt a snap-fit ​​engagement method, assembly and disassembly can be completed without tools. At the same time, after assembly, the first elastic snap-fit ​​part is still allowed to slide a set distance along the groove width direction of the first snap-fit ​​ring groove, so that the rotating part has axial pressing and reset capabilities while maintaining reliable limit. This improves the convenience of installation, disassembly and maintenance of the knob while ensuring normal pressing operation of the knob.

[0018] Optionally, the fixing base has a first annular mounting groove, the first magnetic element is an annular magnet, the first annular mounting groove extends to the side of the fixing base facing the rotating housing, and the first magnetic element is located in and adapted to the first annular mounting groove.

[0019] By adopting the above technical solution, the first annular mounting groove cooperates with the annular magnet, so that the first magnetic component can be installed simply by being placed into the first annular mounting groove during assembly, without the need for additional fasteners or adhesive structures. The assembly process is simple and helps to improve production and maintenance efficiency.

[0020] Since the first magnetic attractor and the second magnetic attractor located on the rotating part always repel each other in the assembled state, the first magnetic attractor is limited by the magnetic repulsion force in the axial direction, thus being able to be stably held in the first annular mounting groove and avoiding falling off during use or disassembly.

[0021] Furthermore, by setting the first magnetic suction component as a ring magnet, its magnetic field distribution is in a ring-symmetrical structure. Regardless of whether the magnetic component used for adsorption and positioning inside the stove is a magnetic block or a magnetic ring, and regardless of whether the second magnetic suction component is multiple magnetic blocks or a single ring magnet, stable adsorption between the fixed base and the stove can be achieved, as well as stable reset of the rotating component after being pressed and released. This improves the adaptability and versatility of the knob structure to different stove structures.

[0022] Optionally, the rotating housing is provided with an installation plate, the peripheral surface of the installation plate is provided with a second elastic snap-fit ​​part, and the inner peripheral surface of the rotating housing is provided with a second snap-fit ​​ring groove, the second elastic snap-fit ​​part snaps into the second snap-fit ​​ring groove; The mounting plate has a second annular mounting groove that extends to the side of the mounting plate away from the fixed base. The second magnetic component is an annular magnet that is located and fitted within the second annular mounting groove.

[0023] By adopting the above technical solution, during installation, the second magnetic component is placed into the second snap-fit ​​ring groove, and then the second elastic snap-fit ​​part is pressed. The second elastic snap-fit ​​part snaps into the second snap-fit ​​ring groove, thus completing the installation of the mounting plate. At this time, the second magnetic component is pressed against the inside of the rotating housing, thus fixing the second magnetic component and facilitating the installation and replacement of the second magnetic component. The second magnetic component is designed as a ring magnet, which can also provide a more stable repulsive force, allowing the rotating housing to be stably reset.

[0024] Optionally, the mounting plate has a first annular clearance groove and a second annular clearance groove, both of which extend to the side of the mounting plate facing the fixed base, and the first annular clearance groove, the second annular clearance groove and the rotating housing are coaxial.

[0025] By adopting the above technical solution, when disassembling the mounting plate, the operator can insert their fingers into the first annular relief groove to apply pressure to the mounting plate, causing the mounting plate to undergo elastic deformation in the radial direction; the second annular relief groove provides additional deformation space for the mounting plate, making it easier for the mounting plate to deform under force, thereby causing the second elastic snap-fit ​​part provided on the circumference of the mounting plate to disengage from the second snap-fit ​​annular groove on the inner circumferential surface of the rotating housing, thus realizing the rapid disassembly of the mounting plate.

[0026] Optionally, the mounting plate is coaxially provided with a protrusion, the protrusion has a first mounting groove, the third magnetic component is a magnetic block, the third magnetic component is disposed in the first mounting groove, the fixed base has a second mounting groove, one end of the protrusion extends into the second mounting groove, and when the rotating housing is in the reset state, there is a space for movement between the bottom of the protrusion and the bottom of the mounting groove.

[0027] By adopting the above technical solution, the protrusion cooperates with the second mounting groove on the fixed base, so that the third magnetic component can move vertically in a restricted manner with the protrusion during the pressing and resetting process of the rotating housing, thereby providing the necessary vertical movement space for the third magnetic component and ensuring that it can form a stable and identifiable magnetic field change during ignition and flame adjustment.

[0028] Meanwhile, by placing the third magnetic component inside the protrusion and extending the protrusion into the second mounting groove of the fixing base, the third magnetic component is brought closer to the bottom of the fixing base in the reset state without significantly increasing the overall height of the knob. This shortens the distance between the third magnetic component and the magnetic components and magnetic field sensor inside the stove, which helps to improve the stability of magnetic field sensing.

[0029] Optionally, the second mounting groove has a plurality of protrusions equidistantly arranged along its circumference. A rotating shaft is provided in the second mounting groove. The rotating shaft is connected to the protrusions. The protrusions can drive the rotating shaft to rotate synchronously. The protrusions can move axially relative to the rotating shaft. At least one pair of springs is provided on the rotating shaft. The two springs in the same pair are arranged opposite each other. The springs are connected to an abutment. The abutment has a guide arc surface, and the guide arc surface of the abutment abuts against the protrusions.

[0030] By adopting the above technical solution, when the user rotates the top cover, the protrusion drives the rotating shaft to rotate synchronously, and the spring and the abutment on the rotating shaft rotate together with the rotating shaft around the axis. When the guide arc surface of the contact body contacts the circumferential protrusion of the mounting groove, the contact body reciprocates along the central axis of the rotation shaft due to the action of the protrusion, thus producing a noticeable damping feel during rotation. This structure allows the user to clearly feel the knob's position or power level through touch when rotating the knob, thereby achieving segmented indication of knob operation.

[0031] Optionally, the rotating shaft includes an annular portion, and the protrusion is connected to the annular portion. The protrusion can drive the annular portion to rotate synchronously, and the protrusion can move axially relative to the annular portion. At least one pair of protrusions are connected to the circumferential surface of the annular portion. The protrusions are provided with receiving grooves. The protrusions correspond one-to-one with the springs. The springs are located in the corresponding receiving grooves, and the abutment can extend into the receiving grooves.

[0032] By adopting the above technical solution, the rotating shaft designed in this way can reduce its overall weight, reduce its rotational inertia, and make the knob lighter overall.

[0033] Optionally, the rotating housing is annular, and a light-transmitting top cover is provided inside the rotating housing. A light-shielding sheet is provided between the light-transmitting top cover and the mounting plate. Both the mounting plate and the fixing base are light-transmitting. A gap is left between the light-shielding plate and the inner wall of the rotating housing, so that the light source inside the stove can be emitted sequentially through the fixed base, the mounting plate, the space between the light-shielding plate and the rotating housing, and the light-transmitting top cover.

[0034] By adopting the above technical solution, the top of the rotating housing can display the light emitted by the light source during use, which not only has an aesthetic effect, but also provides users with an intuitive indication of the stove's working status. In addition, the light shield effectively covers the internal structure of the knob, preventing the internal components from being exposed.

[0035] Optionally, the bottom of the fastener is provided with an anti-slip pad.

[0036] By adopting the above technical solution, the anti-slip pad can increase the friction between the fixing part and the stove panel, making it less likely for the fixing part to slide during the placement and operation of the knob, thereby ensuring the stability of the knob positioning and the reliability of the operation.

[0037] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up mutually repelling first and second magnetic attraction components, a restoring force is provided for the rotating component, thereby replacing the traditional mechanical structure that relies on springs, elastic cards, or elastic pads for restoring. Since magnetic restoring does not require the participation of elastic metal parts, it can effectively avoid mechanical fatigue, plastic deformation, and wear problems caused by repeated pressing, allowing the rotating component to remain stably restored during long-term use; 2. The magnetic repulsion force generated by the magnetic ring does not significantly decrease with the number of presses under normal use conditions. Compared with the characteristic of springs being prone to fatigue failure, it can maintain a basically constant restoring force during long-term use of the knob, which is conducive to maintaining a consistent and reliable operating feel when pressing and rotating the knob. 3. The reset is achieved by using a magnetic ring repulsion structure, which does not rely on precise mechanical fit and elastic parts. It is not sensitive to oil, water vapor and high temperature environment, and is especially suitable for use in high oil fume and high humidity scenarios such as kitchens. It reduces problems such as jamming and malfunction caused by oil intrusion or water vapor corrosion, and improves the overall reliability of the knob. 4. By replacing the magnetic rings with different specifications and magnetic performance parameters, the pressing force and reset force of the rotating parts can be easily adjusted without making major changes to the internal structure of the knob. This allows for flexible adaptation to different models of stoves or different users' needs for operating feel, improving the product's versatility and design flexibility. 5. The first magnetic component attracts the magnetic positioning element inside the cooktop, enabling quick positioning and fixation of the knob. It also acts as a repellent component against the second magnetic component, providing a restoring force for the rotating part, achieving "one magnet, multiple uses." This structure effectively reduces the number of parts, simplifies the internal structural design, and lowers assembly difficulty. Furthermore, it eliminates the need to handle springs and other elastic components during knob disassembly and reinstallation, making operation more convenient and facilitating daily cleaning and maintenance. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0039] Figure 2 This is a schematic diagram illustrating the structure of the spring in the embodiments of this application.

[0040] Figure 3 This is a schematic diagram illustrating the structure of bumps and protrusions in the embodiments of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Rotating component; 11. Rotating housing; 111. First snap-fit ​​ring groove; 112. Second snap-fit ​​ring groove; 113. Annular stepped groove; 12. Light-transmitting top cover; 13. Mounting plate; 131. First annular clearance groove; 132. Second annular clearance groove; 133. Second annular mounting groove; 14. Protrusion; 141. First mounting groove; 15. Second elastic snap-fit ​​part; 2. Fixing component; 21. Fixing base; 211. Second mounting groove; 212. First annular mounting groove; 213. Protrusion; 22. First elastic snap-fit ​​part; 3. Third magnetic component; 4. Second magnetic component; 5. Light-shielding plate; 6. First magnetic component; 7. Rotating shaft; 71. Annular part; 72. Protrusion; 721. Receiving groove; 73. Spring; 74. Abutment body; 8. Anti-slip pad. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0043] This application discloses a magnetically controlled light-guiding knob.

[0044] like Figure 1 , Figure 2 and Figure 3 The magnetic light guide knob includes a rotating part 1 and a fixing part 2. The fixing part 2 is provided with a first magnetic suction part 6, and the rotating part 1 is provided with a second magnetic suction part 4 and a third magnetic suction part 3. Rotating component 1 is rotatably connected to fixed component 2, and rotating component 1 can move a set distance toward fixed component 2; The first magnetic component 6 can attract the magnet inside the stove, so that the fixing component 2 is attached to the stove. The second magnetic attractor 4 repels the first magnetic attractor 6 to provide a restoring force to the rotating member 1; The third magnetic attractor 3 can participate in forming a magnetic field change that can be detected by the magnetic field sensor inside the stove when the rotating part 1 rotates and / or moves, so that the magnetic field sensor outputs a signal corresponding to the state of the rotating part 1.

[0045] The first magnetic attractor 6 and the second magnetic attractor 4 are arranged opposite to each other. The first magnetic attractor 6 and the second magnetic attractor 4 can be of various types, such as ring magnets, multiple magnetic blocks, or a single magnetic block. Specifically, the first magnetic component 6 can be a ring magnet, and the second magnetic component 4 can be a ring magnet, multiple magnetic blocks, or a single magnetic block. It is only necessary to ensure that the second magnetic component 4 is always above the first magnetic component 6 when the rotating component 1 is rotating. The magnet inside the stove can also be a single magnetic block, multiple magnetic blocks, or a ring magnet. When the magnet inside the stove is directly below the first magnetic component 6, the fixing component 2 is precisely positioned and attracted to the stove.

[0046] Specifically, the first magnetic component 6 can be multiple magnetic blocks arranged equidistantly around the central axis of the rotating component 1. The second magnetic component 4 can then be a ring magnet. The magnets inside the stove can still be single magnetic blocks, multiple magnetic blocks, or ring magnets. In other words, the selection of the first magnetic component 6 and the second magnetic component 4 only needs to ensure that the first magnetic component 6 and the second magnetic component 4 always repel each other when the rotating component 1 rotates at any angle.

[0047] The third magnetic component 3 can be a single magnet block / magnetic ring. The specific position of the magnet block can be set according to the control structure inside the stove. For example, the third magnetic component 3 is coaxial with the rotating component 1. When ignition is required, the user presses down on the rotating component 1 and rotates it at a certain angle. During this process, the rotating component 1 undergoes axial displacement along the direction closer to the stove while rotating. The third magnetic component 3, located inside the rotating component 1, undergoes axial displacement and angle change synchronously with the rotating component 1.

[0048] The cooktop contains a magnetic field sensor and a radially magnetized magnet. A third magnetic element 3 controls the rotation of the radially magnetized magnet when it rotates. The magnetic field sensor is preferably a three-dimensional Hall effect sensor, used to detect changes in the strength and direction of the magnetic field formed by the third magnetic element 3 in real time. When the rotating element 1 is pressed and rotated to a preset angle range, the three-dimensional Hall effect sensor detects the corresponding magnetic field change signal and sends the signal to the cooktop control module. The control module determines, based on the received magnetic field signal, that the knob is in the ignition operation state, and that the radially magnetized magnet has rotated to the set angle while the three-dimensional Hall effect sensor simultaneously senses the rotation angle signal. In this case, it outputs an ignition control command, activating the ignition device and simultaneously opening the gas passage, thus completing the ignition process.

[0049] After ignition, the user releases the rotating component 1. Under the repulsive force generated by the mutual repulsion between the second magnetic suction component 4 on the rotating component 1 and the first magnetic suction component 6 on the fixing component 2, the rotating component 1 automatically resets to the non-pressed state in the direction away from the stove. At this time, the third magnetic suction component 3 maintains a stable axial distance from the magnetic field sensor inside the stove.

[0050] During normal operation of the stove, the user only needs to rotate the rotating component 1 to adjust the flame size. As the rotating component 1 rotates, the third magnetic component 3 and the radial magnet rotate around the rotation axis, generating a magnetic field signal that changes with the rotation angle. The three-dimensional Hall sensor continuously detects this magnetic field signal and sends the corresponding angle information to the control module. The control module adjusts the opening of the gas valve according to the angle information, thereby achieving continuous or stepped adjustment of the flame size.

[0051] The third magnetic component 3 can also be eccentrically set on the rotating component 1. Multiple single-axis Hall sensors are used inside the stove. One of the single-axis Hall sensors is a single-axis Hall sensor that senses the Z-axis direction. It can also realize the functions of pressing the rotating component 1 to turn on the fire and rotating the rotating component 1 to adjust the flame.

[0052] Rotating component 1 rotates housing 11, and the inner side wall of rotating housing 11 is provided with a first snap-fit ​​ring groove 111; The fastener 2 includes a fixing base 21, and the fixing base 21 is connected to a first elastic snap-fit ​​part 22; The first elastic snap-fit ​​part 22 snaps into the first snap-fit ​​ring groove 111, and the first elastic snap-fit ​​part 22 can slide a set distance along the groove width direction of the first snap-fit ​​ring groove 111.

[0053] The first elastic locking part 22 includes a circular base that fits onto the fixed base 21. The circular base has several elastic claws integrally formed at equal intervals along its circumference. In other embodiments, the first elastic locking part 22 can be multiple elastic claws fixed to the fixed base 21. This design not only enables the rotating part 1 to be rotatably connected to the fixed part 2, and allows the rotating part 1 to move a set distance closer to the fixed part 2, but also facilitates quick and easy separation of the rotating part 1 and the fixed part 2, making it convenient for replacing and maintaining internal components.

[0054] In other embodiments, the fixing member 2 includes a fixing base 21, the top of which is integrally formed with an annular protrusion 213. The annular protrusion 213 is located in the first snap-fit ​​ring groove 111. The annular protrusion 213 can slide a set distance along the groove width direction of the first snap-fit ​​ring groove 111. The rotating housing 11 can be divided into an upper housing part and a lower housing part. When the upper housing part and the lower housing part are bolted together, the first snap-fit ​​ring groove 111 at the splice of their inner walls can be used to detach the fixing member from the rotating top cover by separating the upper housing part and the lower housing part.

[0055] Furthermore, the fixing base 21 has a cylindrical structure and a first annular mounting groove 212. The first annular mounting groove 212 is coaxial with the fixing base 21. The first magnetic attractor 6 is an annular magnet. The first annular mounting groove 212 extends to the side of the fixing base 21 facing the rotating housing 11. The first magnetic attractor 6 is located in and adapted to the first annular mounting groove 212. The depth of the first annular mounting groove 212 is greater than the thickness of the first magnetic attractor 6, so that first magnetic attractors 6 of different thicknesses can be placed in the first annular mounting groove 212, thereby changing the repulsive force between the first magnetic attractor 6 and the second magnetic attractor 4 to suit different application scenarios.

[0056] Furthermore, the rotating housing 11 has a cylindrical structure, and an installation plate 13 is provided inside the rotating housing 11. The installation plate 13 is disc-shaped, and a second elastic snap-fit ​​part 15 is provided on the circumferential surface of the installation plate 13. The second elastic snap-fit ​​part 15 consists of multiple elastic claws, which are equidistantly arranged along the circumferential surface of the installation plate 13 and integrally formed with the installation plate 13. A second snap-fit ​​ring groove 112 is opened on the inner circumferential surface of the rotating housing 11, and the second elastic snap-fit ​​part 15 snaps into the second snap-fit ​​ring groove 112. The mounting plate 13 has a second annular mounting groove 133. The second annular mounting groove 133, the mounting plate 13 and the rotating housing 11 are coaxial. The second annular mounting groove 133 extends to the side of the mounting plate 13 away from the fixed base 21. The second magnetic attractor 4 is an annular magnet. The second magnetic attractor 4 is located in the second annular mounting groove 133 and is adapted to it.

[0057] Furthermore, the mounting plate 13 is provided with a first annular clearance groove 131 and a second annular clearance groove 132. Both the first annular clearance groove 131 and the second annular clearance groove 132 extend to the side of the mounting plate 13 facing the fixed base 21. The first annular clearance groove 131, the second annular clearance groove 132 and the rotating housing 11 are coaxial. The inner diameter of the first annular clearance groove 131 is larger than the inner diameter of the second annular clearance groove 132. This design allows the user to put their hand into the first annular clearance groove 131 and then press the mounting plate 13, thereby deforming the second elastic snap-fit ​​part 15 and the mounting plate 13, making it easy to detach the mounting plate 13 from the rotating housing 11 and then quickly replace the second magnetic suction part 4.

[0058] Furthermore, a protrusion 14 is coaxially provided on the mounting plate 13, and the protrusion 14 has a first mounting groove 141 extending to its end facing the fixing seat 21. The third magnetic component 3 is a magnetic block, which is fixed in the first mounting groove 141. The first mounting groove 141 is coaxial with the mounting plate 13, and the magnetic block is a cylindrical magnetic block coaxial with the mounting plate 13. The magnetic block can be fixed in the first mounting groove 141 by adhesive or clamping. Of course, the magnetic block can also be a prism, and the first mounting groove 141 can also be a polygonal groove. The first mounting groove 141 can also be eccentrically opened on the mounting plate 13. The specific way the first mounting groove 141 is opened can be designed according to the control structure of the stove.

[0059] Furthermore, a second mounting groove 211 is provided on the fixed base 21, one end of the protrusion 14 extends into the second mounting groove 211, and when the rotating housing 11 is in the reset state, there is a space for movement between the bottom of the protrusion 14 and the bottom of the second mounting groove 211.

[0060] Furthermore, the second mounting groove 211 has several protrusions 213 evenly spaced along its circumference. A rotating shaft 7 is installed inside the second mounting groove 211, and the rotating shaft 7 is connected to the protrusion 14. The protrusion 14 is coaxial with the mounting plate 13, and the second mounting groove 211 is coaxial with the mounting plate 13. The protrusion 14 can drive the rotating shaft 7 to rotate synchronously, and the protrusion 14 can move axially relative to the rotating shaft 7. At least one pair of springs 73 is installed on the rotating shaft 7, and the two springs 73 in the same pair are arranged opposite each other. The springs 73 are connected to abutment bodies 74, which have guide arc surfaces, and the guide arc surfaces of the abutment bodies 74 abut against the protrusions 213. Specifically, the abutment body 74 can be a sphere / hemispherical / block with a semi-circular arc surface. This design allows the user to clearly feel the position or power adjustment level of the knob through touch when rotating it, thereby realizing segmented indication of the knob operation. The protrusion 14 can be a prism structure and be adapted to the channel of the rotating shaft 7. The protrusion 14 can also be a columnar structure and be connected to the rotating shaft 7 with a flat key, so as to realize the relative sliding and synchronous rotation of the two.

[0061] The rotating shaft 7 includes an annular portion 71, and a protrusion 14 is connected to the annular portion 71. The protrusion 14 can drive the annular portion 71 to rotate synchronously. The protrusion 14 can move axially relative to the annular portion 71. At least one pair of protrusions 72 are connected to the circumferential surface of the annular portion 71. The protrusions 72 are provided with receiving grooves 721. The protrusions 72 correspond one-to-one with the springs 73. The springs 73 are located in the corresponding receiving grooves 721, and the abutment 74 can extend into the receiving grooves 721.

[0062] In other embodiments, the rotating shaft 7 may be an annular structure, and at least one pair of receiving grooves 721 are provided, with the same pair of receiving grooves 721 arranged symmetrically about the central axis of the rotating shaft 7.

[0063] Furthermore, the rotating housing 11 is annular, and a light-transmitting top cover 12 is provided inside the rotating housing 11. A light-shielding plate 5 is provided between the light-transmitting top cover 12 and the mounting plate 13. Both the mounting plate 13 and the fixing base 21 are light-transmitting. A gap is left between the light-shielding plate 5 and the inner wall of the rotating housing 11, so that the light source inside the stove can be emitted sequentially through the fixing base 21, the mounting plate 13, the space between the light-shielding plate 5 and the rotating housing 11, and the light-transmitting top cover 12. This design allows the light from the stove to pass through the knob, which is not only aesthetically pleasing but also convenient for checking whether the stove is in use.

[0064] The rotating housing 11 and the light-transmitting cover 12 can be connected by having an annular stepped groove 113 formed on the inner wall of the rotating housing 11, and the light-transmitting cover 12 being a two-section cylindrical structure with varying diameters, so that the stepped portion of the light-transmitting cover 12 can abut against the annular stepped groove 113. When the mounting plate 13 is installed on the rotating housing 11, the mounting plate 13 abuts against the light-shielding plate 5, and the light-shielding plate 5 abuts against the light-transmitting cover 12. The rotating housing 11 and the light-transmitting cover 12 can also be bolted together.

[0065] Furthermore, the bottom of the fastener 2 is provided with an anti-slip pad 8. Example

[0066] Embodiment 1 of this application discloses a magnetically controlled light-guiding knob.

[0067] like Figure 1 , Figure 2 and Figure 3 The magnetically controlled light-guiding knob includes a rotating component 1 and a fixing component 2; The rotating component 1 includes a rotating housing 11, a light-transmitting top cover 12, and a mounting plate 13. The rotating housing 11 has an annular structure. The inner wall of the rotating housing 11 is provided with a first snap-fit ​​ring groove 111, a second snap-fit ​​ring groove 112, and an annular stepped groove 113 along its circumference. The second snap-fit ​​ring groove 112 is located between the first snap-fit ​​ring groove 111 and the annular stepped groove 113. The first snap-fit ​​ring groove 111 is closer to the fixing component 2 than the annular stepped groove 113.

[0068] Mounting plate 13 is a round plate with a protrusion 14 integrally formed on it. A second elastic snap-fit ​​part 15 is integrally formed on the circumferential surface of mounting plate 13. The second elastic snap-fit ​​part 15 consists of multiple elastic claws. The multiple elastic claws are arranged at equal intervals along the circumferential surface of mounting plate 13. The elastic claws can be snapped into the second snap-fit ​​ring groove 112.

[0069] The mounting plate 13 has a first annular relief groove 131 and a second annular relief groove 132, which extend to the side of the mounting plate 13 facing the fixing member 2. The inner diameter of the first annular relief groove 131 is larger than the outer diameter of the second annular relief groove 132, and the first annular relief groove 131, the second annular relief groove 132 and the mounting plate 13 are coaxial.

[0070] The protrusion 14 has a first mounting groove 141, which is a circular groove. A third magnetic component 3 is fixed inside the first mounting groove 141. The third magnetic component 3 is a cylindrical magnet block.

[0071] The mounting plate 13 has a second annular mounting groove 133, which is coaxial with the mounting plate 13. The inner diameter of the second annular mounting groove 133 is larger than the outer diameter of the second annular clearance groove 132, and the outer diameter of the second annular mounting groove 133 is smaller than the inner diameter of the first annular clearance groove 131. A second magnetic attractor 4, which is a ring magnet, is installed in the second annular mounting groove 133 and is adapted to fit the second annular mounting groove 133.

[0072] The light-transmitting top cover 12 is located inside the rotating housing 11. The light-transmitting top cover 12 is a cylindrical structure with two varying diameters. A light-shielding plate 5 is provided between the light-transmitting top cover 12 and the mounting plate 13. When the second elastic snap-fit ​​part 15 is engaged in the second annular mounting groove 133, the mounting plate 13 abuts against the light-shielding plate 5, and the light-shielding plate 5 abuts against the light-transmitting top cover 12. The stepped surface of the light-transmitting top cover 12 abuts against the annular stepped groove 113. The light-shielding plate 5 is a circular plate with a radius larger than the inner diameter of the first annular clearance groove 131 and smaller than the inner diameter of the annular stepped groove 113. The mounting plate 13 also has a light-transmitting structure. This allows light to pass through the mounting plate 13 and the light-transmitting top cover 12, and from a top-down view, the light-transmitting top cover 12 presents a halo effect.

[0073] The fixing component 2 includes a fixing base 21 and a first elastic snap-fit ​​portion 22. The fixing base 21 has a columnar structure and is provided with a second mounting groove 211 and a first annular mounting groove 212. The inner and outer diameters of the first annular mounting groove 212 are the same as the inner and outer diameters of the second annular mounting groove 213. A third magnetic attractor 3 is placed in the first annular mounting groove 212. The third magnetic attractor 3 is an annular magnet that is adapted to the first annular mounting groove 212, and the thickness of the third magnetic attractor 3 is less than the groove depth of the first annular mounting groove 212. The first annular mounting groove 212 is coaxial with the fixing base 21.

[0074] The radius of the second mounting groove 211 is smaller than the inner diameter of the first annular mounting groove 212. The second mounting groove 211 is a circular groove. The second mounting groove 211 is coaxial with the fixed base 21. The second mounting groove 211 is provided with a number of protrusions 213 at equal intervals along its circumference. The protrusions 213 are semi-cylindrical structures, and adjacent protrusions 213 are connected.

[0075] A rotating shaft 7 is provided in the second mounting groove 211. The rotating shaft 7 includes an annular portion 71, and two protrusions 72 are connected to the outer circumferential surface of the annular portion 71. The two protrusions 72 are symmetrically arranged about the central axis of the rotating shaft 7. A receiving groove 721 is formed along the length of the protrusion 72, extending to the end of the protrusion 72 away from the annular portion 71. A spring 73 is fixed in the receiving groove 721, and the spring 73 is connected to an abutment 74, which can extend into the receiving groove 721. The abutment 74 is a steel ball. The central channel of the rotating shaft 7 is an equilateral prism channel, and the protrusion 14 is keyed to the annular portion 71. The annular portion 71 is coaxial with the fixed base 21, and the abutment 74 always maintains contact with the protrusion 213.

[0076] The first elastic locking part 22 includes a circular base, which is tightly fitted onto the fixed base 21. The circular base has several elastic claws integrally formed at equal intervals along its circumference. The width of the first locking ring groove 111 is greater than the thickness of the elastic claws, allowing the rotating housing 11 to be pressed down and moved. When the first elastic locking part 22 engages with the first locking ring groove 111, the fixed base 21 and the rotating housing 11 are coaxial. The fixed base 21 has a light-transmitting structure, and an anti-slip pad 8 is fixed to the bottom of the fixed base 21. The implementation principle of Example 1 is as follows: When in use, the user places the knob in the designated installation position of the stove so that the fixing base is in contact with the stove panel. At this time, the first magnetic suction component 6 and the magnetic positioning component inside the stove attract each other, so that the knob is reliably positioned and fixed on the stove. When the user presses down on the rotating housing 11 and rotates it to a predetermined angle, the rotating housing 11 and the third magnetic attractor 3 mounted on it move synchronously towards the stove, and the angle changes. The magnetic field state formed by the third magnetic attractor 3 changes accordingly. The magnetic field sensor installed inside the stove detects the magnetic field state and transmits the detected signal to the control module. The control module determines that the knob is in the ignition operation state based on the signal, and then outputs an ignition control command to make the stove perform the ignition operation.

[0077] After ignition, the user releases the rotating housing 11. Under the repulsive force generated by the mutual repulsion between the second magnetic element 4 and the first magnetic element 6, the rotating housing 11 resets in a direction away from the stove. At this time, the rotation operation in the reset state causes the third magnetic element 3 to generate different magnetic field changes. The magnetic field sensor continuously detects the magnetic field changes and outputs the corresponding angle signal to the control module. The control module adjusts the gas on / off or gas flow according to the angle signal, thereby realizing continuous adjustment of the flame size.

[0078] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A magnetically controlled light-guiding knob, characterized in that: It includes a rotating component (1) and a fixing component (2), wherein the fixing component (2) is provided with a first magnetic suction component (6), and the rotating component (1) is provided with a second magnetic suction component (4) and a third magnetic suction component (3); The rotating member (1) is rotatably connected to the fixed member (2), and the rotating member (1) can move a set distance toward the fixed member (2); The first magnetic attractant (6) can attract the magnet inside the stove, so that the fixing member (2) is attracted to the stove; The second magnetic attractor (4) repels the first magnetic attractor (6) to provide a restoring force to the rotating member (1); The third magnetic attractor (3) can participate in forming a magnetic field change that can be detected by the magnetic field sensor inside the stove when the rotating member (1) rotates and / or moves, so that the magnetic field sensor outputs a signal corresponding to the state of the rotating member (1).

2. The magnetically controlled light-guiding knob according to claim 1, characterized in that: The rotating component (1) includes a rotating housing (11), and the rotating housing (11) has a first snap-fit ​​ring groove (111); The fastener (2) includes a fixing seat (21), and the fixing seat (21) is connected to a first elastic snap-fit ​​part (22); The first elastic snap-fit ​​part (22) snaps into the first snap-fit ​​ring groove (111), and the first elastic snap-fit ​​part (22) can slide a set distance along the groove width direction of the first snap-fit ​​ring groove (111).

3. The magnetically controlled light-guiding knob according to claim 2, characterized in that: The fixed base (21) has a first annular mounting groove (212), the first magnetic suction member (6) is an annular magnet, the first annular mounting groove (212) extends to the side of the fixed base (21) facing the rotating housing (11), and the first magnetic suction member (6) is located in the first annular mounting groove (212) and is adapted.

4. The magnetically controlled light-guiding knob according to claim 2, characterized in that: The rotating housing (11) is provided with an installation plate (13), and the circumferential surface of the installation plate (13) is provided with a second elastic snap-fit ​​part (15). The inner circumferential surface of the rotating housing (11) is provided with a second snap-fit ​​ring groove (112), and the second elastic snap-fit ​​part (15) snaps into the second snap-fit ​​ring groove (112). The mounting plate (13) is provided with a second annular mounting groove (133), which extends to the side of the mounting plate (13) away from the fixing seat (21). The second magnetic attractor (4) is an annular magnet, which is located in and adapted to the second annular mounting groove (133).

5. The magnetically controlled light-guiding knob according to claim 4, characterized in that: The mounting plate (13) has a first annular clearance groove (131) and a second annular clearance groove (132). The first annular clearance groove (131) and the second annular clearance groove (132) both extend to the side of the mounting plate (13) facing the fixed base (21), and the first annular clearance groove (131), the second annular clearance groove (132) and the rotating housing (11) are coaxial.

6. The magnetically controlled light-guiding knob according to claim 4, characterized in that: The mounting plate (13) is coaxially provided with a protrusion (14), the protrusion (14) is provided with a first mounting groove (141), the third magnetic suction member (3) is a magnetic block, the third magnetic suction member (3) is provided in the first mounting groove (141), the fixed base (21) is provided with a second mounting groove (211), one end of the protrusion (14) extends into the second mounting groove (211), and when the rotating housing (11) is in the reset state, there is a space for movement between the bottom of the protrusion (14) and the bottom of the second mounting groove (211).

7. The magnetically controlled light-guiding knob according to claim 6, characterized in that: The second mounting groove (211) has a plurality of protrusions (213) equidistantly arranged along its circumference. A rotating shaft (7) is provided in the second mounting groove (211). The rotating shaft (7) is connected to the protrusion (14). The protrusion (14) can drive the rotating shaft (7) to rotate synchronously. The protrusion (14) can move axially relative to the rotating shaft (7). At least one pair of springs (73) is provided on the rotating shaft (7). The two springs (73) of the same pair are arranged opposite to each other. The springs (73) are connected to abutment bodies (74). The abutment bodies (74) have guide arc surfaces, and the guide arc surfaces of the abutment bodies (74) abut against the protrusions (213).

8. The magnetically controlled light-guiding knob according to claim 7, characterized in that: The rotating shaft (7) includes an annular portion (71), and the protrusion (14) is connected to the annular portion (71). The protrusion (14) can drive the annular portion (71) to rotate synchronously. The protrusion (14) can move axially relative to the annular portion (71). At least one pair of protrusions (72) are connected to the circumferential surface of the annular portion (71). The protrusions (72) have receiving grooves (721). The protrusions (72) correspond one-to-one with the springs (73). The springs (73) are located in the corresponding receiving grooves (721), and the abutment (74) can extend into the receiving grooves (721).

9. The magnetically controlled light-guiding knob according to claim 4, characterized in that: The rotating housing (11) is annular, and a light-transmitting top cover (12) is provided inside the rotating housing (11). A light-shielding sheet (5) is provided between the light-transmitting top cover (12) and the mounting plate (13). Both the mounting plate (13) and the fixing seat (21) are light-transmitting. A gap is left between the light-shielding plate (5) and the inner wall of the rotating housing (11) so that the light source inside the stove can be emitted sequentially through the fixed base (21), the mounting plate (13), the space between the light-shielding plate (5) and the rotating housing (11), and the light-transmitting cover (12).

10. The magnetically controlled light-guiding knob according to claim 1, characterized in that: The bottom of the fastener (2) is provided with an anti-slip pad (8).

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