Magnetic knob assembly and household appliance

Abstract

The application relates to the technical field of household appliances, and discloses a magnetic knob assembly and a household appliance, which comprise: a magnetic knob suitable for being arranged on a panel, the magnetic knob comprising a base and a knob cover, the base being provided with a plurality of first magnets uniformly distributed in a circumferential direction, the first magnets being suitable for being positioned in cooperation with fixed magnets arranged below the panel, the center of the knob cover being provided with a second magnet, and the knob cover being capable of moving up and down and rotating relative to the base; and a magnetic sensor suitable for being arranged on the side of the panel away from the magnetic knob and capable of sensing the magnetic field intensity of the second magnet. According to the application, the magnetic knob and the magnetic sensor are distributed on the two sides of the panel, a hole does not need to be formed in the panel, the base is completely attached to the panel, compared with the related art, the panel is free of a hole, a step and an assembly gap, a full-surface continuous structure is formed, and the problem of cleaning dead angles can be fundamentally solved. Moreover, the magnetic knob is convenient to take off from the panel, the magnetic knob is convenient to clean, and no-dead-angle cleaning is realized.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to magnetic knob assemblies and household appliances. Background Technology

[0002] In the control structure of traditional gas stoves, there is usually an assembly gap between the knob and the cooktop panel to accommodate the control shaft, limiting structure, or snap-fit ​​components. This assembly gap is a necessary design feature for the knob to rotate and be pressed, but it easily becomes a natural accumulation area for contaminants such as oil, water stains, and food residue. Especially during cooking, when hot oil droplets splatter or soup spills, liquids can easily seep into the interior through the gap between the knob and the panel, creating "cleaning dead corners" that are difficult to clean. Wiping with a cloth can only remove surface stains, while long-term accumulation of internal dirt not only affects the appearance of the stove but also easily breeds bacteria, posing a hygiene hazard.

[0003] Traditional knob control structures often have mounting holes, limit slots, or screw holes on the panel, creating multiple steps and recesses. These structures not only disrupt the continuity of the panel surface but also make it difficult for cleaning tools to reach, requiring users to repeatedly scrape with cotton swabs, toothbrushes, or other tools, resulting in cumbersome and inefficient operation. Although some products use detachable knob designs, the disassembly process is complex, requiring tools or panel removal, greatly reducing the willingness to maintain them. Summary of the Invention

[0004] In view of this, the present invention provides a magnetic knob assembly and a household appliance to fundamentally solve the problem of cleaning dead corners between the knob and the stove panel.

[0005] In a first aspect, the present invention provides a magnetic knob assembly, comprising: A magnetic knob is suitable for being installed on a panel. The magnetic knob includes a base and a knob cover. The base is provided with a plurality of first magnets evenly distributed around the circumference. The first magnets are suitable for cooperating with and positioning with a fixed magnet provided below the panel. The knob cover is provided with a second magnet at its center. The knob cover can move up and down and rotate relative to the base. A magnetic sensor is adapted to be disposed on the side of the panel opposite to the magnetic knob, and is capable of sensing the magnetic field strength of the second magnet.

[0006] Beneficial effects: The magnetic knob includes a base and a knob cover. The base has multiple first magnets evenly distributed circumferentially. These first magnets cooperate with a fixed magnet located below the panel for positioning, ensuring the base does not move. The knob cover has a second magnet at its center, allowing the knob cover to move up and down and rotate relative to the base. A magnetic sensor is appropriately placed on the side of the panel away from the magnetic knob. It can sense the magnetic field strength of the second magnet. When the magnetic knob is pressed down, the base remains stationary, the knob cover moves downward relative to the base, and the second magnet on the knob cover moves downward. The magnetic field sensed by the magnetic sensor on the side of the panel away from the magnetic knob changes, and the position of the magnetic knob can be deduced from the magnetic field data sensed by the magnetic sensor. When the magnetic knob is rotated, the knob cover rotates relative to the base, and the magnetic field distribution sensed by the magnetic sensor changes. The position of the magnetic knob can be deduced from the magnetic field data sensed by the magnetic sensor. Because the magnetic knob and magnetic sensor are located on both sides of the panel, there is no need to drill holes in the panel. The base fits the panel perfectly. Compared with related technologies, the panel has no openings, steps, or assembly gaps, forming a continuous structure across the entire surface, which can fundamentally solve the problem of cleaning dead corners. Furthermore, the magnetic knob is easy to remove from the panel, making it easy to clean and achieving thorough cleaning.

[0007] In one alternative embodiment, the first magnet is configured to be axially magnetized, and the second magnet is configured to be radially magnetized.

[0008] Beneficial effects: When the magnetic knob is pressed, the second magnet moves downward, shortening the distance between it and the magnetic sensor. When the magnetic field strength detected by the magnetic sensor reaches a preset value, the pressing action can be determined, and the gas stove can proceed with subsequent actions. The first magnet is axially magnetized and can be positioned in conjunction with the fixed magnet below the panel. When the magnetic knob is rotated, the second magnet rotates with the knob cover. At this time, the magnetic field data sensed by the magnetic sensor changes, and the rotation angle of the magnetic knob can be deduced from the sensed magnetic field data. Therefore, the subsequent actions of the gas stove can be controlled based on the rotation angle of the magnetic knob.

[0009] In one optional embodiment, the knob cover includes a first annular sidewall surrounding the outer periphery of the base, a fixing piece is provided between the first annular sidewall and the base, the fixing piece is fixed to the first annular sidewall, a gap is provided between the fixing piece and the base, when the knob cover moves up and down, it drives the fixing piece to move up and down synchronously, a positioning structure is provided outside the base, when the knob cover is in the initial state of not being pressed, the upper end of the fixing piece abuts against the positioning structure.

[0010] Beneficial effects: During assembly, the knob cover is placed over the base, and then a fixing piece is inserted into the gap between the first annular sidewall and the base. When the fixing piece is in place, the upper end of the fixing piece abuts against the positioning structure, which can position the fixing piece and the initial position of the knob cover, ensuring that the knob cover will not detach from the base upwards.

[0011] In one optional embodiment, the fixing piece is provided with a first stop structure, the lower end of the knob cover is provided with a second stop structure adapted to the first stop structure, and the fixing piece and the knob cover are interference-fitted.

[0012] Beneficial effects: The fixing piece has a first stop structure, and the lower end of the knob cover has a second stop structure that mates with the first stop structure. Therefore, during assembly, the knob cover is first placed over the base, and then the fixing piece is inserted into the gap between the first annular sidewall and the base. When the first stop structure on the fixing piece abuts against the second stop structure at the lower end of the knob cover, and the upper end of the fixing piece abuts against the positioning structure, the fixing piece is in place. Because the second stop structure at the lower end of the knob cover abuts against the first stop structure, when the knob is pressed, the knob cover moves downward, which in turn moves the fixing piece downward as well. Due to the interference fit between the fixing piece and the knob cover, when the knob is rotated, the knob cover can rotate the fixing piece together.

[0013] In one optional embodiment, the magnetic knob assembly further includes a reset component, which is disposed between the knob cover and the base. When the knob cover loses its pressing force, the reset component can drive the knob cover to reset to its initial position. The reset component cooperates with the base, and the knob cover and the reset component cooperate with a ball bearing via a slide rail so that the knob cover can rotate relative to the reset component.

[0014] Beneficial effects: By incorporating a reset component, when the magnetic knob is pressed down, the knob cover moves downward relative to the base, generating a reset force. When the pressure on the knob cover is released, this force drives the knob cover back to its initial position, achieving automatic knob cover reset. The knob cover and reset component are connected by a slide and ball joint, ensuring that the knob cover can rotate relative to the reset component.

[0015] In one alternative embodiment, the base includes a bottom wall and a second annular sidewall, and the reset assembly includes: A support ring is provided with multiple ball grooves spaced apart along the circumference. The support ring cooperates with the second annular sidewall so that the support ring can move up and down relative to the second annular sidewall. The ball is provided in the ball groove. The knob cover is provided with a slide rail. The ball is slidably located in the slide rail. An elastic element is disposed between the support ring and the bottom wall.

[0016] Beneficial effects: The ball bearing is located within the ball groove, and the knob cover has a sliding track. The ball bearing is slidably positioned in the sliding track. Therefore, when the knob cover rotates, the friction between the sliding track and the ball bearing drives the ball bearing to rotate within the ball groove, ensuring smooth rotation of the knob cover. When the knob cover is pressed, the ball bearing drives the support ring to move downwards. The elastic element is located between the support ring and the bottom wall. Therefore, when the elastic element is compressed, it generates a restoring force. When the knob cover is released from pressure, the restoring force of the elastic element drives the support ring to move upwards, and the ball bearing drives the knob cover to return to its original position.

[0017] In one alternative embodiment, the support ring is provided with a protrusion, and one end of the elastic element is sleeved over the protrusion.

[0018] Beneficial effect: By setting protruding posts in the support ring, it is easier to position and install the elastic element.

[0019] In one optional embodiment, the bottom wall is provided with a plurality of limiting grooves, the first magnet is limited within the limiting grooves, the base is provided with a cover plate, the cover plate is located at the top of the limiting grooves, the top of the first magnet abuts against the cover plate, the cover plate is provided with a through hole, and the elastic element passes through the cover plate and abuts against the bottom wall.

[0020] Beneficial effects: The bottom wall is provided with multiple limiting grooves, within which the first magnet is confined. These grooves facilitate the positioning and assembly of the first magnet. A cover plate is located at the top of the limiting grooves, with the top of the first magnet abutting against it. The cover plate effectively limits the top of the first magnet, preventing it from moving within the grooves. The cover plate also has a through hole through which an elastic element passes, abutting against the bottom wall. This allows the elastic element to be positioned between the support ring and the bottom wall, and the cover plate further limits its position.

[0021] In one alternative embodiment, the slide rail includes a plurality of slide rail units distributed circumferentially, with a groove or protrusion formed between two adjacent slide rail units.

[0022] Beneficial effects: The grooves or protrusions formed between two adjacent slide units increase rotational damping while ensuring smooth rotation.

[0023] In one alternative embodiment, the base is provided with an annular anti-slip pad at its bottom.

[0024] Beneficial effect: By setting an annular anti-slip pad at the bottom of the base, the friction between the base and the panel can be increased, ensuring that there is no relative sliding between the base and the panel, and keeping the base stationary relative to the panel.

[0025] In one optional embodiment, the annular anti-slip pad is provided with one of a positioning protrusion and a positioning hole, and the bottom of the base is provided with the other of a positioning protrusion and a positioning hole, wherein the positioning protrusion is embedded in the positioning hole.

[0026] Beneficial effects: The ring-shaped anti-slip pad has one of the positioning protrusions and positioning holes, and the bottom of the base has the other of the positioning protrusions and positioning holes. The positioning protrusions are embedded in the positioning holes, which facilitates the positioning and installation of the ring-shaped anti-slip pad.

[0027] Secondly, the present invention also provides a household appliance, including a panel and the aforementioned magnetic knob assembly.

[0028] Beneficial effects: This household appliance features a magnetic knob comprising a base and a knob cover. The base has multiple first magnets evenly distributed circumferentially. These first magnets cooperate with fixed magnets located below the panel for positioning, ensuring the base remains stationary. The knob cover has a second magnet at its center, allowing it to move up and down and rotate relative to the base. A magnetic sensor is appropriately positioned on the side of the panel away from the magnetic knob. This sensor detects the magnetic field strength of the second magnets. When the magnetic knob is pressed down, the base remains stationary, while the knob cover moves downwards relative to the base. The second magnets on the knob cover move downwards, causing a change in the magnetic field detected by the magnetic sensor on the side of the panel away from the knob. The position of the magnetic knob can be deduced based on the magnetic field data detected by the magnetic sensor. When the magnetic knob is rotated, the knob cover rotates relative to the base, causing a change in the magnetic field distribution of the second magnets detected by the magnetic sensor. The position of the magnetic knob can then be deduced based on the magnetic field data detected by the magnetic sensor. Because the magnetic knob and magnetic sensor are located on both sides of the panel, there is no need to drill holes in the panel. The base fits the panel perfectly. Compared with related technologies, the panel has no openings, steps, or assembly gaps, forming a continuous structure across the entire surface, which can fundamentally solve the problem of cleaning dead corners. Furthermore, the magnetic knob is easy to remove from the panel, making it easy to clean and achieving thorough cleaning.

[0029] In one alternative implementation, the household appliance is a gas stove. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a magnetic knob in a magnetic knob assembly according to an embodiment of the present invention; Figure 2 for Figure 1 Cross-section of the magnetic knob shown Figure 1 ; Figure 3 for Figure 1 Cross-section of the magnetic knob shown Figure 2 ; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 1 The diagram shown is an illustration of the magnetic knob after the knob cover has been removed. Figure 6 for Figure 1 The top view of the magnetic knob after removing the knob cover is shown; Figure 7 This is a bottom view of the knob cover.

[0032] Explanation of reference numerals in the attached figures: 1. Base; 101. Second annular sidewall; 1011. Positioning structure; 1021. Slide groove; 102. Bottom wall; 103. Limiting groove; 2. First magnet; 3. Knob cover; 301. Knob outer cover; 3011. First annular sidewall; 3012. Central groove; 302. Slide track; 3022. Slide track unit; 303. Decorative cover; 4. Second magnet; 5. Fixing piece; 501. First stop structure; 502. Wedge structure; 6. Support ring; 600. Ball groove; 601. Protruding post; 602. Limiting rib; 7. Ball; 8. Elastic element; 9. Cover plate; 901. Through hole; 10. Annular anti-slip pad; 1001. Positioning protrusion. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] In the control structure of traditional gas stoves, there is usually an assembly gap between the knob and the cooktop panel to accommodate the control shaft, limiting structure, or snap-fit ​​components. This assembly gap is a necessary design feature for the knob to rotate and be pressed, but it easily becomes a natural accumulation area for contaminants such as oil, water stains, and food residue. Especially during cooking, when hot oil droplets splatter or soup spills, liquids can easily seep into the interior through the gap between the knob and the panel, creating "cleaning dead corners" that are difficult to clean. Wiping with a cloth can only remove surface stains, while long-term accumulation of internal dirt not only affects the appearance of the stove but also easily breeds bacteria, posing a hygiene hazard.

[0038] Traditional knob control structures often have mounting holes, limit slots, or screw holes on the panel, creating multiple steps and recesses. These structures not only disrupt the continuity of the panel surface but also make it difficult for cleaning tools to reach, requiring users to repeatedly scrape with cotton swabs, toothbrushes, or other tools, resulting in cumbersome and inefficient operation. Although some products use detachable knob designs, the disassembly process is complex, requiring tools or panel removal, greatly reducing the willingness to maintain them.

[0039] The following is combined with Figures 1 to 7 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, a magnetic knob assembly is provided, including a magnetic knob and a magnetic sensor.

[0041] The magnetic knob is suitable for being installed on the panel. The magnetic knob includes a base 1 and a knob cover 3. The base 1 is provided with a plurality of first magnets 2 evenly distributed along the circumference. The first magnets 2 are suitable for being positioned in conjunction with fixed magnets installed below the panel. The knob cover 3 is provided with a second magnet 4 at its center. The knob cover 3 can move up and down and rotate relative to the base 1. The magnetic sensor is suitable for being installed on the side of the panel away from the magnetic knob and can sense the magnetic field strength of the second magnet 4.

[0042] In this embodiment, the magnetic knob includes a base 1 and a knob cover 3. The base 1 has multiple first magnets 2 evenly distributed circumferentially. The first magnets 2 cooperate with a fixed magnet located below the panel for positioning, ensuring that the base 1 does not move. The knob cover 3 has a second magnet 4 at its center, and the knob cover 3 can move up and down and rotate relative to the base 1. A magnetic sensor is adapted to be located on the side of the panel away from the magnetic knob, and can sense the magnetic field strength of the second magnet 4. When the magnetic knob is pressed down, the base 1 remains stationary, the knob cover 3 moves downward relative to the base 1, and the second magnet 4 on the knob cover 3 moves downward. The magnetic field sensed by the magnetic sensor on the side of the panel away from the magnetic knob changes, and the position of the magnetic knob can be deduced based on the magnetic field data sensed by the magnetic sensor. When the magnetic knob is rotated, the knob cover 3 rotates relative to the base 1, and the magnetic field distribution sensed by the magnetic sensor changes, and the position of the magnetic knob can be deduced based on the magnetic field data sensed by the magnetic sensor. Because the magnetic knob and magnetic sensor are located on both sides of the panel, there is no need to drill holes in the panel. The base 1 fits perfectly with the panel. Compared with related technologies, the panel has no openings, no steps, and no assembly gaps, forming a continuous structure across the entire surface, which can fundamentally solve the problem of cleaning dead corners. Furthermore, the magnetic knob is easy to remove from the panel, making it easy to clean and achieving cleaning without dead corners.

[0043] Furthermore, the side of the panel away from the magnetic knob does not require any mechanical components; control is achieved through magnetic field data sensed by the magnetic sensor, thus improving structural reliability.

[0044] The magnetic knob assembly provided in this embodiment achieves seamless and openless contact between the magnetic knob and the panel. The bottom of the magnetic knob is completely flush with the panel, forming a continuous and flat surface structure, which completely eliminates physical gaps and spaces for dirt to accumulate. Users can easily remove the magnetic knob and clean the bottom of the magnetic knob and the panel as a whole, truly achieving a user experience of cleaning with just a wipe and improving the convenience of product cleaning.

[0045] In one embodiment, the first magnet 2 is configured to be axially magnetized, and the second magnet 4 is configured to be radially magnetized.

[0046] In this embodiment, when the magnetic knob is pressed, the second magnet 4 moves downward, shortening the distance between the second magnet 4 and the magnetic sensor. When the magnetic field strength detected by the magnetic sensor reaches a preset value, the pressing action can be determined, and the gas stove can proceed with subsequent actions. The first magnet 2 is axially magnetized and can be positioned in conjunction with the fixed magnet below the panel. When the magnetic knob is rotated, the second magnet 4 rotates along with the knob cover 3. At this time, the magnetic field data sensed by the magnetic sensor changes, and the rotation angle of the magnetic knob can be deduced from the sensed magnetic field data. Therefore, the subsequent actions of the gas stove can be controlled based on the rotation angle of the magnetic knob.

[0047] Specifically, during the rotation of the magnetic knob, the magnetic field data sensed by the magnetic sensor changes in its X and Y axis components. The real-time rotation angle of the magnetic knob is calculated using the arctangent function, achieving precise position recognition. During the pressing process, the square root of the sum of the squares of the X and Y axis magnetic field components yields changes in planar data, which is used to determine the type of pressing action.

[0048] Specifically, the formula for calculating the rotation angle is: θ = arctan2(Y, X), and the formula for determining the pressing action is: B = .

[0049] In one specific embodiment, the base 1 is provided with six first magnets 2, which are evenly distributed circumferentially.

[0050] In one embodiment, the knob cover 3 includes a first annular sidewall 3011 surrounding the outer periphery of the base 1. A fixing piece 5 is provided between the first annular sidewall 3011 and the base 1. The fixing piece 5 is fixed to the first annular sidewall 3011. A gap is provided between the fixing piece 5 and the base 1. When the knob cover 3 moves up and down, it drives the fixing piece 5 to move up and down synchronously. A positioning structure 1011 is provided outside the base 1. When the knob cover 3 is in the initial state where it is not pressed, the upper end of the fixing piece 5 abuts against the positioning structure 1011.

[0051] In this embodiment, during assembly, the knob cover 3 is placed over the base 1, and then the fixing piece 5 is inserted into the gap between the first annular sidewall 3011 and the base 1. When the fixing piece 5 is assembled in place, the upper end of the fixing piece 5 abuts against the positioning structure 1011, which can position the fixing piece 5 and position the initial position of the knob cover 3, ensuring that the knob cover 3 will not detach from the base 1 upwards.

[0052] Specifically, the fixing piece 5 can be a ring structure or an arc structure. When it is an arc structure, multiple fixing pieces 5 are arranged at intervals along the circumference.

[0053] In one embodiment, the fixing piece 5 is provided with a first stop structure 501, the lower end of the knob cover 3 is provided with a second stop structure adapted to the first stop structure 501, and the fixing piece 5 and the knob cover 3 are interference-fitted.

[0054] In this embodiment, the fixing piece 5 is provided with a first stop structure 501, and the lower end of the knob cover 3 is provided with a second stop structure that cooperates with the first stop structure 501. Therefore, during assembly, the knob cover 3 is first placed over the base 1, and then the fixing piece 5 is inserted into the gap between the first annular sidewall 3011 and the base 1. When the first stop structure 501 on the fixing piece 5 abuts against the second stop structure at the lower end of the knob cover 3, the fixing piece 5 is assembled in place. Since the second stop structure at the lower end of the knob cover 3 abuts against the first stop structure 501, when the knob is pressed, the knob cover 3 moves downward, which will drive the fixing piece 5 to move downward together. Since the fixing piece 5 and the knob cover 3 are interference-fitted, when the knob is rotated, the knob cover 3 can drive the fixing piece 5 to rotate together.

[0055] Specifically in one embodiment, such as Figure 5 As shown, the fixing piece 5 is provided with a wedge structure 502. The wedge structure 502 can guide the fixing piece 5 into the gap between the first annular sidewall 3011 and the base 1, and realize the interference fit between the fixing piece 5 and the first annular sidewall 3011.

[0056] In one specific embodiment, the base 1 includes a second annular sidewall 101, and the positioning structure 1011 is disposed outside the second annular sidewall 101.

[0057] In one embodiment, the magnetic knob assembly further includes a reset assembly. The reset assembly is located between the knob cover 3 and the base 1. When the knob cover 3 loses its pressing force, the reset assembly can drive the knob cover 3 to reset to its initial position. The reset assembly cooperates with the base 1. The knob cover 3 and the reset assembly cooperate with the ball bearing 7 through the slide 302 so that the knob cover 3 can rotate relative to the reset assembly.

[0058] In this embodiment, by providing a reset component, when the magnetic knob is pressed down, the knob cover 3 moves downward relative to the base 1, and the reset component generates a reset force. When the knob cover 3 loses the pressing force, the reset force of the reset component drives the knob cover 3 back to its initial position, thus achieving automatic reset of the knob cover 3. The knob cover 3 and the reset component cooperate with the ball bearing 7 through the slide 302, which ensures that the knob cover 3 can rotate relative to the reset component.

[0059] In one embodiment, the base 1 includes a bottom wall 102 and a second annular side wall 101, and the reset assembly includes a support ring 6 and an elastic element 8.

[0060] The support ring 6 is provided with multiple ball grooves 600 at intervals along the circumference. The support ring 6 cooperates with the second annular side wall 101 so that the support ring 6 can move up and down relative to the second annular side wall 101. The ball 7 is provided in the ball groove 600. The knob cover 3 is provided with a slide 302, and the ball 7 is slidably located in the slide 302. The elastic element 8 is provided between the support ring 6 and the bottom wall 102.

[0061] In this embodiment, the ball bearing 7 is disposed within the ball groove 600, and the knob cover 3 is provided with a slide 302. The ball bearing 7 is slidably located in the slide 302. Therefore, when the knob cover 3 rotates, the friction between the slide 302 and the ball bearing 7 drives the ball bearing 7 to rotate, ensuring that the knob cover 3 can rotate smoothly. When the knob cover 3 is pressed, the ball bearing 7 drives the support ring 6 to move downward together. The elastic element 8 is disposed between the support ring 6 and the bottom wall 102. Therefore, the elastic element 8 is compressed to generate a restoring force. When the knob cover 3 loses the pressing force, the restoring force of the elastic element 8 drives the support ring 6 to move upward, and the ball bearing 7 drives the knob cover 3 to return to its original position upward together.

[0062] In one specific embodiment, the outer edge of the support ring 6 is provided with a limiting rib 602, and the second annular sidewall 101 is provided with a sliding groove 1021. The sliding groove 1021 extends along the height direction of the base 1, and the limiting rib 602 is located in the sliding groove 1021 and can slide up and down in the sliding groove 1021.

[0063] In one embodiment, the support ring 6 is provided with a protrusion 601, and one end of the elastic member 8 is sleeved on the protrusion 601.

[0064] In this embodiment, the support ring 6 is provided with a protruding post 601 to facilitate the positioning and installation of the elastic element 8.

[0065] As shown in the figure, the protruding post 601 is located below the support ring 6.

[0066] In one embodiment, the bottom wall 102 is provided with a plurality of limiting grooves 103, the first magnet 2 is limited in the limiting grooves 103, the base 1 is provided with a cover plate 9, the cover plate 9 is located at the top of the limiting grooves 103, the top of the first magnet 2 abuts against the cover plate 9, the cover plate 9 is provided with a through hole 901, and the elastic member 8 passes through the cover plate 9 and abuts against the bottom wall 102.

[0067] In this embodiment, the bottom wall 102 is provided with multiple limiting grooves 103. The first magnet 2 is limited within the limiting grooves 103. The limiting grooves 103 facilitate the limiting of the first magnet 2 and the assembly of the first magnet 2. The cover plate 9 is located at the top of the limiting groove 103, and the top of the first magnet 2 abuts against the cover plate 9. The cover plate 9 can limit the top of the first magnet 2 and prevent the first magnet 2 from moving in the limiting groove 103. The cover plate 9 is provided with a through hole 901. The elastic member 8 passes through the cover plate 9 and abuts against the bottom wall 102, so that the elastic member 8 is located between the support ring 6 and the bottom wall 102. The cover plate 9 can also limit the position of the elastic member 8.

[0068] In one embodiment, such as Figure 7 As shown, the slide 302 includes a plurality of slide units 3022 distributed along the circumference, and a groove or protrusion is formed between two adjacent slide units 3022.

[0069] In this embodiment, a groove or protrusion is formed between two adjacent slide rail units 3022, which increases rotational damping while ensuring smooth rotation.

[0070] In one embodiment, the knob cover 3 includes a knob outer cover 301 and a decorative cover 303, with the decorative cover 303 and the knob outer cover 301 being interference-fitted.

[0071] In this embodiment, the knob cover 3 includes a knob outer cover 301 and a decorative cover 303. The decorative cover 303 makes the knob cover 3 more aesthetically pleasing. The decorative cover 303 and the knob outer cover 301 are interference-fitted, and the assembly method of the two is simple, which can improve the assembly efficiency.

[0072] In one specific embodiment, the knob cover 301 includes a first annular sidewall 3011, and the top of the knob cover 301 is provided with a mounting groove. The decorative cover 303 is embedded in the mounting groove, and the outer edge of the decorative cover 303 is flush with the top of the knob cover 301, resulting in a neat and beautiful appearance.

[0073] Specifically, the decorative cover 303 can be made of glass or plastic and has multiple facets to enhance its aesthetics.

[0074] In one embodiment, the knob cover 301 has a central groove 3012 at its center, and the second magnet 4 is disposed in the central groove 3012.

[0075] In one embodiment, the bottom of the base 1 is provided with an annular anti-slip pad 10.

[0076] In this embodiment, by providing an annular anti-slip pad 10 at the bottom of the base 1, the friction with the panel can be increased, preventing the magnetic knob from moving.

[0077] In one embodiment, the annular anti-slip pad 10 is provided with one of a positioning protrusion 1001 and a positioning hole, and the bottom of the base 1 is provided with the other of a positioning protrusion 1001 and a positioning hole, with the positioning protrusion 1001 embedded in the positioning hole.

[0078] In this embodiment, the annular anti-slip pad 10 is provided with one of a positioning protrusion 1001 and a positioning hole, and the bottom of the base 1 is provided with the other of a positioning protrusion 1001 and a positioning hole. The positioning protrusion 1001 is embedded in the positioning hole, which facilitates the positioning and installation of the annular anti-slip pad 10.

[0079] In one specific embodiment, a positioning protrusion 1001 is provided on the annular anti-slip pad 10, and a positioning hole is provided on the base 1. The positioning hole is recessed upward, and multiple positioning protrusions 1001 and positioning holes are provided circumferentially.

[0080] According to an embodiment of the present invention, in another aspect, a household appliance is also provided, including a panel and the magnetic knob assembly provided in the above embodiments.

[0081] This household appliance features a magnetic knob comprising a base 1 and a knob cover 3. The base 1 has multiple first magnets 2 evenly distributed circumferentially. These first magnets 2 cooperate with a fixed magnet located below the panel for positioning, ensuring the base 1 remains stationary. The knob cover 3 has a second magnet 4 at its center, allowing it to move up and down and rotate relative to the base 1. A magnetic sensor is positioned on the side of the panel opposite to the magnetic knob and senses the magnetic field strength of the second magnet 4. When the magnetic knob is pressed down, the base 1 remains stationary, while the knob cover 3 moves downward relative to the base 1. The second magnet 4 on the knob cover 3 also moves downward, causing a change in the magnetic field sensed by the magnetic sensor on the side of the panel opposite to the magnetic knob. The position of the magnetic knob can be deduced from the magnetic field data sensed by the magnetic sensor. When the magnetic knob is rotated, the knob cover 3 rotates relative to the base 1, changing the magnetic field distribution sensed by the magnetic sensor. The position of the magnetic knob can then be deduced from the magnetic field data sensed by the magnetic sensor. Because the magnetic knob and magnetic sensor are located on both sides of the panel, there is no need to drill holes in the panel. The base 1 fits perfectly with the panel. Compared with related technologies, the panel has no openings, no steps, and no assembly gaps, forming a continuous structure across the entire surface, which can fundamentally solve the problem of cleaning dead corners. Furthermore, the magnetic knob is easy to remove from the panel, making it easy to clean and achieving cleaning without dead corners.

[0082] In one embodiment, the household appliance can be any electrical device that requires control via a knob, such as a gas stove, microwave oven, air fryer, etc.

[0083] In one embodiment, the household appliance is a gas stove.

[0084] Specifically, a third magnet corresponding to the first magnet 2 is provided below the panel. The magnetic attraction between the third magnet and the first magnet 2 keeps the magnetic knob fixed on the panel.

[0085] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A magnetic knob assembly, characterized in that, include: A magnetic knob is suitable for being installed on a panel. The magnetic knob includes a base (1) and a knob cover (3). The base (1) is provided with a plurality of first magnets (2) evenly distributed along the circumference. The first magnets (2) are suitable for being positioned in conjunction with fixed magnets installed below the panel. The knob cover (3) is provided with a second magnet (4) at its center. The knob cover (3) can move up and down and rotate relative to the base (1). A magnetic sensor is adapted to be disposed on the side of the panel opposite to the magnetic knob, and is capable of sensing the magnetic field strength of the second magnet (4).

2. The magnetic knob assembly according to claim 1, characterized in that, The first magnet (2) is configured to be axially magnetized, and the second magnet (4) is configured to be radially magnetized.

3. The magnetic knob assembly according to claim 1, characterized in that, The knob cover (3) includes a first annular sidewall (3011) surrounding the outer periphery of the base (1). A fixing piece (5) is provided between the first annular sidewall (3011) and the base (1). The fixing piece (5) is fixed to the first annular sidewall (3011). A gap is provided between the fixing piece (5) and the base (1). When the knob cover (3) moves up and down, it drives the fixing piece (5) to move up and down synchronously. A positioning structure (1011) is provided outside the base (1). When the knob cover (3) is in the initial state of not being pressed, the upper end of the fixing piece (5) abuts against the positioning structure (1011).

4. The magnetic knob assembly according to claim 3, characterized in that, The fixing piece (5) is provided with a first stop structure (501), and the lower end of the knob cover (3) is provided with a second stop structure that is adapted to the first stop structure (501), and the fixing piece (5) and the knob cover (3) are interference fit.

5. The magnetic knob assembly according to any one of claims 1 to 4, characterized in that, The magnetic knob assembly also includes a reset assembly, which is located between the knob cover (3) and the base (1). When the knob cover (3) loses pressure, the reset assembly can drive the knob cover (3) to reset to the initial position. The knob cover (3) and the reset assembly cooperate with the ball (7) through the slide (302) so that the knob cover (3) can rotate relative to the reset assembly.

6. The magnetic knob assembly according to claim 5, characterized in that, The base (1) includes a bottom wall (102) and a second annular side wall (101), and the reset assembly includes: The support ring (6) is provided with a plurality of ball grooves (600) spaced apart along the circumference. The support ring (6) cooperates with the second annular sidewall (101) so that the support ring (6) can move up and down relative to the second annular sidewall (101). The ball (7) is provided in the ball groove (600). The knob cover (3) is provided with a slide (302). The ball (7) is slidably located in the slide (302). An elastic element (8) is disposed between the support ring (6) and the bottom wall (102).

7. The magnetic knob assembly according to claim 6, characterized in that, The support ring (6) is provided with a protrusion (601), and one end of the elastic element (8) is sleeved on the protrusion (601).

8. The magnetic knob assembly according to claim 6, characterized in that, The bottom wall (102) is provided with a plurality of limiting grooves (103), the first magnet (2) is limited in the limiting grooves (103), the base (1) is provided with a cover plate (9), the cover plate (9) is located at the top of the limiting grooves (103), the top of the first magnet (2) abuts against the cover plate (9), the cover plate (9) is provided with a through hole (901), and the elastic member (8) passes through the cover plate (9) and abuts against the bottom wall (102).

9. The magnetic knob assembly according to any one of claims 6 to 8, characterized in that, The slide (302) includes a plurality of slide units (3022) distributed circumferentially, with grooves or protrusions formed between two adjacent slide units (3022).

10. The magnetic knob assembly according to any one of claims 1 to 4, 6 to 8, characterized in that, The bottom of the base (1) is provided with an annular anti-slip pad (10).

11. The magnetic knob assembly according to claim 10, characterized in that, The annular anti-slip pad (10) is provided with one of a positioning protrusion (1001) and a positioning hole, and the bottom of the base (1) is provided with the other of a positioning protrusion (1001) and a positioning hole, and the positioning protrusion (1001) is embedded in the positioning hole.

12. A household appliance, characterized in that, Includes a panel and the magnetic knob assembly according to any one of claims 1 to 11.

13. The household appliance according to claim 12, characterized in that, The household appliance in question is a gas stove.

Images