Magnetic knob assembly and cooking device

Abstract

The utility model provides a kind of magnetic knob assembly and cooking device, it is related to the technical field of smart home, and magnetic knob assembly includes: knob, panel, magnetic induction module and circuit board, first positioning magnet and inductive magnet are provided in knob;Second positioning magnet is provided on the position corresponding to first positioning magnet of panel;First positioning magnet and second positioning magnet are configured to attract each other, to make knob be adsorbed in one side of panel;Circuit board is set to the other side of panel, and magnetic induction module is set on circuit board corresponding to inductive magnet, and the magnetic induction module is used to induct the magnetic field of inductive magnet.

Description

Technical Field

[0001] This utility model relates to the field of smart home technology, and in particular to a magnetic knob assembly and a cooking device. Background Technology

[0002] Traditional knobs use mechanical structures, such as valve stems, encoders, and potentiometers, which have the following main problems: A. They all require holes to be drilled in the panel, making it difficult to effectively prevent water, dust, and oil stains; B. They are subject to mechanical wear, and excessive force can easily cause permanent damage; C. There are gaps between the knob and the panel, which trap dirt and grime and are extremely difficult to clean. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic knob assembly and a cooking device to alleviate the aforementioned technical problems of existing mechanical knobs.

[0004] In a first aspect, the present invention provides a magnetic knob assembly, comprising: a knob, a panel, a magnetic induction module and a circuit board, wherein the knob is provided with a first positioning magnet and an induction magnet; A second positioning magnet is provided on the panel at a position corresponding to the first positioning magnet; The first and second positioning magnets are configured to attract each other so that the knob is attracted to one side of the panel; The circuit board is located on the other side of the panel, and the magnetic induction module is located on the circuit board corresponding to the induction magnet. The magnetic induction module is used to sense the magnetic field of the induction magnet.

[0005] Furthermore, the knob is also provided with a third positioning magnet, which is disposed opposite to the first positioning magnet. When the third positioning magnet is configured to be closer to the second positioning magnet than the first positioning magnet, the third positioning magnet and the second positioning magnet attract each other, so that the knob is attracted to one side of the panel.

[0006] Furthermore, the knob has a touch sensor on the side opposite to the panel, and / or the knob has a touch sensor on the side closer to the panel.

[0007] Furthermore, the knob includes a central body and a cover plate, with the central body connected to the cover plate; The sensing magnet is disposed inside the central body, and a touch spring is disposed between the cover plate and the sensing magnet. One end of the touch spring abuts against the cover plate, and the other end abuts against the sensing magnet; the cover plate, the sensing magnet, and the touch spring together form the touch sensor. The magnetic knob assembly also includes a ferromagnetic metal sheet and a sensing spring. One side of the ferromagnetic metal sheet is connected to the second positioning magnet, and the other end abuts against one end of the sensing spring. The other end of the sensing spring abuts against the magnetic induction module.

[0008] Furthermore, the first positioning magnet includes a first annular magnet; the second positioning magnet includes a second annular magnet; And / or, the first positioning magnet includes a plurality of first magnets arranged in a ring; the second positioning magnet includes a plurality of second magnets arranged in a ring. And / or, the sensing magnet is a bar magnet; the length direction of the bar magnet is parallel to the panel; or, the length direction of the bar magnet is perpendicular to the panel, and the bar magnet is spaced apart from the rotation axis of the knob.

[0009] Furthermore, the second positioning magnet is embedded inside the panel; Alternatively, the second positioning magnet is connected to the panel via a bracket; Alternatively, the second positioning magnet is attached to the panel by an adhesive.

[0010] Furthermore, the material of the central body is plastic or epoxy resin; and / or, the material of the cover plate is plastic or epoxy resin.

[0011] Furthermore, the magnetic knob assembly also includes a lamp body connected to the circuit board, the lamp body being used to indicate the angle at which the knob has been turned.

[0012] Furthermore, the magnetic induction module includes a magnetic induction chip or a Hall sensor.

[0013] Secondly, the present invention provides a cooking device including the aforementioned magnetic knob assembly.

[0014] This utility model has at least the following advantages or beneficial effects: The magnetic knob assembly provided by this utility model includes: a knob, a panel, a magnetic induction module, and a circuit board. The knob is provided with a first positioning magnet and a sensing magnet. A second positioning magnet is provided on the panel at a position corresponding to the first positioning magnet. The first positioning magnet and the second positioning magnet are configured to attract each other so that the knob is attracted to one side of the panel. The circuit board is provided on the other side of the panel, and the magnetic induction module is provided on the circuit board corresponding to the sensing magnet. The magnetic induction module is used to sense the magnetic field of the sensing magnet.

[0015] A first positioning magnet is installed inside the knob, while a corresponding second positioning magnet is installed on the panel. When the knob is placed on the panel, the first and second positioning magnets are configured to attract each other, thus allowing the knob to be attached to a fixed position and rotated. A sensing magnet is also installed on the knob, and a magnetic induction module on the other side of the panel senses the change in the magnetic field of the sensing magnet when the knob is rotated, calculating the current rotation angle of the sensing magnet to adjust the gear. This magnetic knob assembly eliminates the need for openings in the panel, achieving complete isolation and offering advantages such as waterproofing, dustproofing, oil resistance, high safety, easy cleaning, and low friction.

[0016] The cooking apparatus provided by this utility model includes the aforementioned magnetic knob assembly. Because the cooking apparatus provided by this utility model uses the aforementioned magnetic knob assembly, it also possesses the advantages of the magnetic knob assembly. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the magnetic knob assembly provided in Embodiment 1 of this utility model; Figure 2 A schematic diagram of the magnetic knob assembly provided in Embodiment 2 of this utility model; Figure 3 A schematic diagram of the magnetic knob assembly provided in Embodiment 3 of this utility model; Figure 4 A schematic diagram of the magnetic knob assembly provided in Embodiment 4 of this utility model; Figure 5 A schematic diagram of the magnetic knob assembly provided in Embodiment 5 of this utility model; Figure 6 This is a top view of the circuit board of the magnetic knob assembly provided in Embodiment 5 of this utility model.

[0019] Icons: 1-Knob; 11-Central body; 12-Cover plate; 14-First positioning magnet; 15-Induction magnet; 16-Third positioning magnet; 2-Panel; 21-Second positioning magnet; 3-Magnetic induction module; 4-Circuit board; 5-Hall sensor; 61-Touch spring; 62-Ferromagnetic metal sheet; 63-Sensing spring; 7-Lamp body. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, 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, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and 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 this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model based on the specific circumstances.

[0026] Example 1 like Figure 1 As shown, the magnetic knob assembly provided by this utility model includes: a knob 1, a panel 2, a magnetic induction module 3, and a circuit board 4.

[0027] The knob 1 includes a central body 11 and a cover plate 12. The top surface of the central body 11 is provided with a first mounting groove and a second mounting groove. The first mounting groove is annular, and the second mounting groove is located inside the inner ring of the first mounting groove. A first positioning magnet 14 is installed in the first mounting groove, and a sensing magnet 15 is installed in the second mounting groove. The cover plate 12 is connected to the top surface of the central body 11, thereby enclosing the first positioning magnet 14 and the sensing magnet 15 between the central body 11 and the cover plate 12.

[0028] In this embodiment, the first positioning magnet 14 is a ring magnet, disposed within the annular first mounting groove. In other possible implementations, the first positioning magnet 14 may include multiple block-shaped first magnets arranged in a ring, and correspondingly, the first mounting groove is a plurality of grooves arranged in a ring to accommodate the first magnets.

[0029] like Figure 1 As shown, the first positioning magnet 14 includes a first end and a second end with opposite magnetic polarities, arranged sequentially from the front (upward-facing side) of the knob 1 to the back (facing the panel 2). Specifically, in this embodiment, the first end is the N pole and the second end is the S pole.

[0030] A mounting groove is provided on the back side of panel 2 (the side facing away from knob 1). The mounting groove is annular, and a second positioning magnet 21 is provided inside the mounting groove. The second positioning magnet 21 includes a third end and a fourth end with opposite magnetic poles. The third end and the fourth end are arranged sequentially along the direction from the front side of panel 2 to the back side of panel 2. In this embodiment, the third end is the N pole and the fourth end is the S pole.

[0031] Similar to the first positioning magnet 14, the second positioning magnet 21 can also be a ring magnet, or include multiple block-shaped second magnets arranged in a ring.

[0032] In addition to being connected to the panel 2 by embedding as described in this embodiment, the second positioning magnet 21 can also be glued to the panel 2, or a bracket can be connected to the panel 2 to fix the second positioning magnet 21 to the panel 2. The embedding method, with a shallow groove in the panel 2, facilitates precise and efficient installation and positioning during production and assembly, allowing the second positioning magnet 21 to be embedded in the shallow groove of the panel 2. Simultaneously, the depth of the shallow groove can be adapted to the height of the second positioning magnet 21, thus maintaining the flatness of the panel 2 surface when the second positioning magnet 21 is embedded in the panel 2, preventing damage to the panel 2 due to uneven stress during transportation.

[0033] The first positioning magnet 14 and the second positioning magnet 21 are adapted in shape and size. Their shapes and sizes can be exactly the same or approximately the same. In this embodiment, the first positioning magnet 14 and the second positioning magnet 21 can be two identical ring magnets.

[0034] When the user places the knob 1 in the correct position on the panel 2 with its face up, the first positioning magnet 14 and the second positioning magnet 21 align vertically and attract each other, thereby causing the back of the knob 1 to adhere to the front of the panel 2.

[0035] The magnetic induction module 3 is located on the circuit board 4 on one side of the back of the panel 2. It is not in direct contact with the knob 1. It is used to sense the change in the magnetic field of the induction magnet 15 when the knob 1 is rotated, so as to analyze and obtain the rotation angle of the knob 1.

[0036] The working principle is as follows: A first positioning magnet 14 is installed inside the knob 1, while a corresponding second positioning magnet 21 is installed on the panel 2. When the knob 1 is placed on the front of the panel 2, the magnetic poles of the first positioning magnet 14 and the second positioning magnet 21 are opposite in polarity, thus allowing the knob 1 to be attracted to a fixed position and rotated. A sensing magnet 15 is installed on the knob 1, and the magnetic induction module 3 below the panel 2 can sense the change in the magnetic field of the sensing magnet 15 when the knob 1 is rotated to calculate the current rotation angle of the sensing magnet 15, thereby realizing the adjustment of the gear. The above-mentioned magnetic knob assembly does not require openings in the panel 2, achieving complete isolation, and has advantages such as waterproof, dustproof, oil-proof, good safety, easy cleaning, and low friction.

[0037] In this embodiment, the sensing magnet 15 is a bar magnet, and the length direction of the bar magnet is parallel to the front of the panel 2. The line connecting the center of the bar magnet and the center of the first positioning magnet 14 is perpendicular to the front of the panel 2. That is to say, the N pole and S pole of the horizontally placed sensing magnet 15 are arranged sequentially in the horizontal direction. After the knob 1 is rotated, the N pole and S pole of the sensing magnet 15 rotate around its center, and the magnetic field lines generated by it change. This can be sensed by the magnetic induction module 3 below the panel 2. The magnetic induction module 3 calculates and analyzes the rotation angle of the knob 1 to determine the current pointing position of the knob 1.

[0038] The front of panel 2 is provided with indicator marks. Panel 2 can be made of glass, and the indicator marks can be screen-printed onto the front of panel 2. The indicator marks are used to indicate the correct placement position of knob 1. When the user rotates knob 1 according to the indicator marks, the first positioning magnet 14 and the second positioning magnet 21 can be perfectly aligned. The indicator marks correspond to the position of the mounting slot. During product assembly, workers can more easily align and install the second positioning magnet 21 with the indicator marks above it using the mounting slot.

[0039] like Figure 1 As shown, the magnetic knob assembly also includes a lamp body 7, which is connected to the circuit board 4. The lamp body 7 is used to indicate the angle at which the knob 1 is turned, thereby indicating the current gear position.

[0040] The number of lamp bodies 7 can be multiple. Both the magnetic induction module 3 and the lamp bodies 7 are mounted on the circuit board 4. The knob 1 is used to adjust the power level. The number of lamp bodies 7 is at least the same as the number of power levels. All lamp bodies 7 are arranged around the magnetic induction module 3. In one embodiment, one lamp body 7 is used to light up when the knob 1 is pointed to the corresponding power level, while the other lamp bodies 7 are turned off. For example, if there are three power levels, namely low, medium, and high, when the knob 1 is rotated and pointed to low, the lamp body 7 corresponding to low power lights up, while the lamp bodies 7 corresponding to medium and high power do not light up, thus providing a clear indication to the user. In another embodiment, several lamp bodies 7 are arranged around the magnetic induction module 3 to form a lamp ring. As the knob 1 is turned, different areas of the lamp ring light up. For example, when the knob 1 is rotated to the high power position, all lamp bodies 7 light up to form a fully lit circular lamp ring, while when the knob 1 is rotated to the medium power position, only half of the lamp bodies 7 light up to form a half-lit, half-closed arc-shaped lamp ring.

[0041] The central body 11 and the cover plate 12 can be made of plastic, epoxy resin, etc., and the central body 11 and the cover plate 12 can be connected by glue.

[0042] The first positioning magnet 14 and the second positioning magnet 21 can both be fixed with glue.

[0043] The magnetic induction module 3 includes a magnetic induction chip or a Hall sensor 5, both of which can sense changes in the magnetic field.

[0044] Example 2 like Figure 2 The difference from Embodiment 1 is that in this embodiment, the knob 1 is further provided with a third positioning magnet 16, which is disposed opposite to the first positioning magnet 14. When the third positioning magnet 16 is configured to be closer to the second positioning magnet 21 than the first positioning magnet 14, the third positioning magnet 16 and the second positioning magnet 21 attract each other so that the knob 1 is attracted to one side of the panel 2.

[0045] Both the front and back of knob 1 can be magnetically attached to panel 2, reducing the time users spend judging the front and back of knob 1, allowing users to operate knob 1 more freely and improving the user experience.

[0046] Both sides of the central body 11 are connected to cover plates 12, and a third mounting groove is provided on the other side of the central body 11. A third positioning magnet 16, symmetrically arranged with the first positioning magnet 14, is installed in the third mounting groove. The cover plates 12 are connected to the bottom surface of the central body 11, completing the encapsulation of the third positioning magnet 16. Figure 2 As shown, from top to bottom, the magnetic poles of the third positioning magnet 16, the first positioning magnet 14, and the second positioning magnet 21 are S pole, N pole, N pole, S pole, N pole, and S pole, respectively. Thus, the first positioning magnet 14 is configured to attract the second positioning magnet 21. After the knob 1 is flipped, the third positioning magnet 16 is configured to be closer to the second positioning magnet 21 than the first positioning magnet 14. In this case, the third positioning magnet 16 also attracts the second positioning magnet 21, thus enabling the knob 1 to be attached to the panel 2 on both sides.

[0047] Example 3 like Figure 3 As shown, unlike Embodiment 1, in this embodiment, the knob 1 has a touch sensor on the side opposite to the panel 2. Specific functions can be activated or deactivated via the touch sensor.

[0048] Specifically, a touch spring 61 is provided between the cover plate 12 and the sensing magnet 15. One end of the touch spring 61 abuts against the cover plate 12, and the other end abuts against the sensing magnet 15. The magnetic knob assembly also includes a ferromagnetic metal sheet 62 and a sensing spring 63. The front side of the ferromagnetic metal sheet 62 is connected to the fourth end of the second positioning magnet 21. One end of the sensing spring 63 abuts against the back side of the ferromagnetic metal sheet 62, and the other end abuts against the magnetic induction module 3.

[0049] In this embodiment, the knob 1 is equipped with a touch function. When the user touches the cover plate 12 with their finger, the capacitance of the touch spring 61 changes. The corresponding sensing spring 63 below can sense the change in capacitance of the touch spring 61 and also changes its capacitance. The circuit board 4 connected to the magnetic induction module 3 can sense the change, thereby realizing the touch sensing function. The touch module consists of the touch spring 61, the ferromagnetic metal sheet 62, and the sensing spring 63.

[0050] Example 4 like Figure 4 As shown, based on Example 3 and combined with Example 2, this example can also achieve double-sided adsorption and double-sided touch sensing of the knob 1.

[0051] Specifically, cover plates 12 are provided on both sides of the central body 11, and a third mounting groove is provided on the bottom surface of the central body 11. A third positioning magnet 16 is installed in the third mounting groove, which is symmetrically arranged with the first positioning magnet 14. The third mounting groove and the first mounting groove are symmetrical vertically, and the magnet installed in the third mounting groove is exactly the same as the first positioning magnet 14, except that the magnetic poles of the opposite sides are reversed, that is, the S pole of the third positioning magnet 16 faces the cover plate 12, and the N pole faces the cover plate 12. The cover plate 12 is connected to the bottom surface of the central body 11, thus completing the encapsulation of the third positioning magnet 16.

[0052] The bottom surface of the central body 11 is provided with a mounting hole communicating with the second mounting groove. A touch spring 61 is installed in the mounting hole. A cover plate 12 is connected to the bottom surface of the central body 11. One end of the touch spring 61 abuts against the sensing magnet 15, and the other end abuts against the cover plate 12. Both the upper and lower touch springs 61 are used to generate capacitive sensing with the lower sensing spring 63, and the principle of touch control is the same as in embodiment 3.

[0053] Example 5 like Figure 5 and Figure 6 As shown, the difference from Embodiment 1 is that in this embodiment, the sensing magnet 15 is a bar magnet, and the length direction of the bar magnet is perpendicular to the front of the panel 2. For example, the N pole of the sensing magnet 15 faces upward, and the S pole faces downward. The bar magnet is located at a non-central position inside the first positioning magnet 14, that is, the bar magnet is eccentrically positioned relative to the central body 11.

[0054] like Figure 6 As shown, the magnetic induction module 3 includes a plurality of Hall sensors 5 arranged in a ring. The plurality of Hall sensors 5 are mounted on the circuit board 4. The line connecting the center of the circle formed by the plurality of Hall sensors 5 and the center of the first positioning magnet 14 is perpendicular to the front side of the panel 2.

[0055] After the knob 1 is rotated, the sensing magnet 15 can sequentially trigger each Hall sensor 5. When the sensing magnet 15 rotates above a certain Hall sensor 5, the Hall sensor 5 can sense the change in magnetic field and reflect the current rotation angle of the knob 1, thereby achieving the purpose of angle recognition.

[0056] The cooking apparatus provided by this utility model includes the aforementioned magnetic knob assembly. Because the cooking apparatus provided by this utility model uses the aforementioned magnetic knob assembly, it also possesses the advantages of the magnetic knob assembly.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A magnetic knob assembly, characterized in that, include: The knob (1), panel (2), magnetic induction module (3) and circuit board (4) are provided in the knob (1), which is provided with a first positioning magnet (14) and an induction magnet (15). A second positioning magnet (21) is provided on the panel (2) at a position corresponding to the first positioning magnet (14). The first positioning magnet (14) and the second positioning magnet (21) are configured to attract each other so that the knob (1) is attracted to one side of the panel (2); The circuit board (4) is disposed on the other side of the panel (2), and the magnetic induction module (3) is disposed on the circuit board (4) corresponding to the induction magnet (15). The magnetic induction module (3) is used to induct the magnetic field of the induction magnet (15). The knob (1) is also provided with a third positioning magnet (16), which is disposed opposite to the first positioning magnet (14). When the third positioning magnet (16) is configured to be closer to the second positioning magnet (21) than the first positioning magnet (14), the third positioning magnet (16) and the second positioning magnet (21) attract each other so that the knob (1) is attracted to one side of the panel (2).

2. The magnetic knob assembly according to claim 1, characterized in that, The knob (1) is provided with a touch sensor on the side opposite to the panel (2), and / or the knob (1) is provided with a touch sensor on the side close to the panel (2).

3. The magnetic knob assembly according to claim 2, characterized in that, The knob (1) includes a central body (11) and a cover plate (12), wherein the central body (11) is connected to the cover plate (12); The sensing magnet (15) is disposed inside the central body (11), and a touch spring (61) is disposed between the cover plate (12) and the sensing magnet (15). One end of the touch spring (61) abuts against the cover plate (12), and the other end abuts against the sensing magnet (15). The cover plate (12), the sensing magnet (15), and the touch spring (61) together form the touch sensor. The magnetic knob assembly also includes a ferromagnetic metal sheet (62) and a sensing spring (63). One side of the ferromagnetic metal sheet (62) is connected to the second positioning magnet (21), and the other end abuts against one end of the sensing spring (63). The other end of the sensing spring (63) abuts against the magnetic induction module (3).

4. The magnetic knob assembly according to claim 1, characterized in that, The first positioning magnet (14) includes a first annular magnet; the second positioning magnet (21) includes a second annular magnet; And / or, the first positioning magnet (14) includes a plurality of first magnets arranged in a ring; the second positioning magnet (21) includes a plurality of second magnets arranged in a ring; And / or, the sensing magnet (15) is a bar magnet; the length direction of the bar magnet is parallel to the panel (2); or, the length direction of the bar magnet is perpendicular to the panel (2), and the bar magnet is spaced apart from the rotation axis of the knob (1).

5. The magnetic knob assembly according to claim 1, characterized in that, The second positioning magnet (21) is embedded inside the panel (2); Alternatively, the second positioning magnet (21) is connected to the panel (2) via a bracket; Alternatively, the second positioning magnet (21) is connected to the panel (2) by an adhesive.

6. The magnetic knob assembly according to claim 3, characterized in that, The material of the central body (11) is plastic or epoxy resin; and / or, the material of the cover plate (12) is plastic or epoxy resin.

7. The magnetic knob assembly according to claim 1, characterized in that, The magnetic knob assembly also includes a lamp body (7), which is connected to the circuit board (4). The lamp body (7) is used to indicate the angle at which the knob (1) is turned.

8. The magnetic knob assembly according to claim 1, characterized in that, The magnetic induction module (3) includes a magnetic induction chip or a Hall sensor (5).

9. A cooking apparatus, characterized in that, Includes the magnetic knob assembly as described in any one of claims 1-8.

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