Magnetic control knob

Abstract

The utility model belongs to the technical field of knobs, and discloses a magnetic control knob, which comprises a base, fixed magnets, a base, an aluminum shell, an iron ring, an induction magnet, a connecting piece and a sensor, the base is provided with a fixing groove for placing the fixed magnets, the polarities of the adjacent fixed magnets are opposite, the base is positioned above the base and is provided with a penetrating column, and a limiting part is arranged in the penetrating column. The iron ring is arranged in the penetrating column and cannot fall off under the action of the limiting part, the induction magnet is arranged below the iron ring and attached to the iron ring, the connecting piece penetrates through the induction magnet and the iron ring from bottom to top and then is connected with the aluminum shell, a gap is formed between the connecting piece and the iron ring and is fixed to the induction magnet, a gap is reserved between the aluminum shell and the iron ring, and the induction magnet moves in the penetrating column. The magnetic control knob uses a scheme of detecting magnetic field change to adjust functions of household appliances, the performance and the service life of the magnetic control knob are not affected after water enters the magnetic control knob, impact sound of the aluminum shell and the iron ring is used as feedback of function confirmation, and the magnetic control knob is prevented from being pressed repeatedly or pressed vigorously.

Description

Technical Field

[0001] The utility model relates to the technical field of knobs, in particular to a magnetic control knob. Background Art

[0002] A knob switch is a component that is controlled by hand and can be rotated continuously according to functional requirements. The rotation angle can reach 360°. Different rotation angles can be used to select different functions of the electrical device. Many household appliances on the market are equipped with knob switches, such as induction cookers, gas stoves, washing machines and other appliances.

[0003] Most of the existing knob switches are plug-in switches. It is necessary to plug the output line of the knob switch into the plug-in terminal of the control panel so that the knob switch is electrically connected to the sensor in the electrical appliance to adjust the function of the electrical appliance. Therefore, most of the existing knob switches are equipped with a circuit board inside. When the knob is cleaned or wiped, the cleaning water will enter the knob switch. The performance of the circuit board will be damaged after contacting water, affecting the sensitivity of the knob switch in subsequent use, and even reducing the service life of the knob switch.

[0004] At the same time, the existing knob switch has a small feedback sound. Especially when using electrical appliances in a noisy environment, after the user presses the knob switch, he is not sure whether the selected electrical function has been confirmed successfully, which causes the user to press the knob switch multiple times or press the knob switch hard, affecting the service life of the knob switch.

[0005] Therefore, there is an urgent need for a magnetic control knob to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetic control knob, which will not affect its performance and service life even if water enters during the cleaning process. At the same time, the pressing feedback sound for function confirmation is loud, and the user does not need to press multiple times or press hard, thus providing a good user experience.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A magnetic control knob, comprising:

[0009] The base is surrounded by a plurality of accommodating grooves.

[0010] A fixed magnet, wherein a plurality of the fixed magnets are provided, the fixed magnets are placed in one-to-one correspondence with the receiving grooves, and the adjacent fixed magnets have opposite polarities;

[0011] A base is arranged above the base, the base is provided with a hollow through column, and a limiting portion is provided inside the through column;

[0012] The aluminum shell is in the shape of a cylinder with one end open, and the aluminum shell is disposed on the base and the two can move relative to each other;

[0013] An iron ring is placed in the through column and abuts against the limiting portion, and the limiting portion is used to prevent the iron ring from falling;

[0014] An induction magnet is located below the iron ring, and the induction magnet and the iron ring can be selectively fitted;

[0015] A connecting piece, which penetrates the induction magnet and the iron ring from bottom to top and is connected to the aluminum shell, a gap is left between the connecting piece and the iron ring, the connecting piece is fixedly connected to the induction magnet, a gap is left between the aluminum shell and the iron ring, and the induction magnet is movably placed in the through-column;

[0016] The sensor is located in the panel of the household appliance and connected to the household appliance, and the sensor is configured to sense the change of the magnetic field to adjust the function of the household appliance.

[0017] As an optimal technical solution for the magnetic control knob, the magnetic control knob also includes a connecting sleeve and a rotating seat, the aluminum shell covers the connecting sleeve and the rotating seat, the connecting sleeve is connected to the aluminum shell, and the rotating seat is connected to the connecting sleeve, and the aluminum shell, the connecting sleeve and the rotating seat can rotate synchronously.

[0018] As an optimal technical solution for the magnetic control knob, the inner wall of the aluminum shell is provided with a first ridge, the connecting sleeve is located above the first ridge, the inner wall of the aluminum shell is provided with a first groove, and the outer wall of the connecting sleeve is correspondingly provided with a first protrusion, the first protrusion can be clamped in the first groove, the rotating seat includes a hollow clamping column, the clamping column is sleeved outside the through column, the connecting sleeve is provided with a through hole, the inner wall of the through hole is provided with a second protrusion, the outer periphery of the clamping column is provided with a second groove, and the second protrusion can slide in the second groove.

[0019] As an optimal technical solution for the magnetic control knob, the base includes a damping part, which is a continuous wavy groove. The damping part is arranged around the through column. The rotating seat is located between the damping part and the through column. The rotating seat also includes an elastic member and a ball connected to each other. The elastic member is arranged on the outer periphery of the rotating seat. The ball abuts against the damping part. As the rotating seat rotates, the ball can be driven to move along the damping part.

[0020] As a preferred technical solution of the magnetic control knob, the magnetic control knob further includes a cover plate, and the cover plate is used to cover the damping part.

[0021] As an optimal technical solution for the magnetic control knob, a plurality of first protruding columns are provided on the base, and the plurality of first protruding columns are arranged at intervals along the upper end surface of the damping part. A plurality of first positioning holes are correspondingly provided on the cover plate, and the first protruding columns can be inserted into the first positioning holes.

[0022] As an optimal technical solution for the magnetic control knob, a first annular ridge is provided on the outer periphery of the iron ring, and a second annular ridge is provided on the inner wall of the through-column. When the iron ring is placed in the through-column, the first annular ridge abuts against the second annular ridge to prevent the iron ring from falling off along the through-column. The second annular ridge is the limiting portion.

[0023] As an optimal technical solution for the magnetic control knob, a plurality of second protruding columns are provided on the base, and the plurality of second protruding columns are arranged at intervals along the bottom surface of the base. A plurality of second positioning holes are correspondingly provided on the base, and the second protruding columns can be inserted into the second positioning holes.

[0024] As a preferred technical solution of the magnetic control knob, the magnetic control knob further includes a locking assembly, and the locking assembly is used to lock the base and the pedestal.

[0025] As a preferred technical solution of the magnetic control knob, the magnetic control knob further includes a first gasket and a second gasket, wherein the first gasket is fitted on the bottom surface of the base, and the second gasket is located between the aluminum shell and the connecting sleeve.

[0026] The beneficial effects of the utility model are:

[0027] The magnetic control knob of the utility model comprises a base, a fixed magnet, a pedestal, an aluminum shell, an iron ring, an induction magnet, a connecting piece and a sensor. The magnetic field of the magnetic control knob is changed by rotating the induction magnet, and the sensor for inducing the change of the magnetic field is installed outside the panel of the household appliance. The entire magnetic control knob is not controlled by a circuit, and the entire magnetic control knob is not used for an electrical component. Therefore, when the magnetic control knob is cleaned, the magnetic control knob will not have the problem of water ingress, thereby avoiding the problem of performance damage of the magnetic control knob due to water ingress in the prior art, and improving the service life of the magnetic control knob. The aluminum shell and the iron ring are collided to feedback that the magnetic control knob is pressed in place, so as to confirm the selected function. Since the iron ring of the aluminum shell is made of metal materials, an obvious collision sound will be emitted when the two metal materials collide, which can give obvious feedback to the user, thereby improving the pressing feedback sound of the magnetic control knob, avoiding the magnetic control knob being pressed multiple times or pressed hard by the user, and improving the service life of the magnetic control knob from another aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded view of the magnetic control knob of the utility model;

[0029] Figure 2 It is a cross-sectional schematic diagram of the magnetic control knob of the utility model;

[0030] Figure 3 It is a cross-sectional schematic diagram of the aluminum shell of the magnetic control knob of the utility model;

[0031] Figure 4 It is a structural schematic diagram of the base of the magnetic control knob of the utility model;

[0032] Figure 5 It is a structural schematic diagram of the base of the magnetic control knob of the utility model;

[0033] Figure 6 It is a structural schematic diagram of a rotating seat of a magnetic control knob of the utility model.

[0034] In the figure:

[0035] 1. Base; 101. Accommodating groove; 102. Second protruding column;

[0036] 2. Fix the magnet;

[0037] 3. base; 301. through column; 3011. second annular convex ridge; 302. damping part; 303. first protruding column;

[0038] 4. Aluminum shell; 401. First convex ridge; 402. First groove;

[0039] 5. iron ring; 501. first annular ridge;

[0040] 6. Induction magnet; 7. Connector;

[0041] 8. Connecting button; 801. First protrusion; 802. Through hole; 8021. Second protrusion;

[0042] 9. Rotating seat; 901. Clamping column; 9011. Second groove; 902. Elastic member; 903. Round ball;

[0043] 10. Cover plate; 11. First gasket; 12. Second gasket. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] like Figure 1 and Figure 2As shown, this embodiment provides a magnetic control knob for adjusting a household appliance with a panel and selecting a function of the household appliance. The magnetic control knob includes a base 1, a fixed magnet 2, a base 3, an aluminum shell 4, an iron ring 5, an induction magnet 6, a connecting piece 7 and a sensor, wherein the aluminum shell 4 is in the shape of a cylinder with one end open, the aluminum shell 4 is covered on the base 1 and the two can move relative to each other, and the remaining components are accommodated between the aluminum shell 4 and the base 1, and a plurality of accommodating grooves 101 are arranged on the side ring of the base 1, and a plurality of fixed magnets 2 are arranged, and the accommodating grooves 101 are placed one by one with the fixed magnets 2 so as to limit the position of the fixed magnets 2, and the induction magnet 6 is located below the iron ring 5, and the connecting piece 7 penetrates the induction magnet 6 and the iron ring 5 from bottom to top and is connected to the aluminum shell 4 The induction magnet 6 is connected to each other. When the aluminum shell 4 is rotated, the induction magnet 6 will rotate. The connecting piece 7, the iron ring 5 and the induction magnet 6 are located at the center of the base 1. A plurality of fixed magnets 2 are arranged around the periphery of the induction magnet 6. The polarities of two adjacent fixed magnets 2 are opposite. Therefore, when the induction magnet 6 is rotated by a certain angle, the magnetic field between the induction magnet 6 and the fixed magnet 2 will change. Since the sensor has the function of detecting changes in the magnetic field, when the magnetic field changes, the magnetic field signal received by the sensor changes, thereby changing the electrical signal output by the sensor. The sensor is connected to the controller of the household appliance. Therefore, when the electrical signal output by the sensor changes, the controller can correspondingly control and adjust different functions of the household appliance to realize the selection of the function of the household appliance.

[0049] Specifically, the sensor is installed inside the panel of the household appliance, and the other components are assembled and installed above the panel of the household appliance. Since the sensor is controlled by magnetic field changes instead of electrical signals in the magnetic control knob, the process of opening holes in the panel in the prior art is omitted when installing the magnetic control knob, and the overall mechanical strength of the panel can be improved. Since the sensor in the magnetic control knob is installed inside the panel of the household appliance, and there are no electrical devices in the other components, when cleaning the magnetic control knob, there is no need to worry about the performance of the magnetic control knob being damaged due to water ingress, thereby improving the service life of the magnetic control knob.

[0050] The base 3 is arranged above the base 1, and a hollow through column 301 is arranged on the base 3, and a limited portion is arranged in the through column 301, wherein the iron ring 5 is placed in the through column 301 and abuts against the limited portion, and the iron ring 5 is placed on the limited portion, and the setting of the limited portion can prevent the iron ring 5 from falling off the base 3, and after the connecting piece 7 penetrates the induction magnet 6 from bottom to top and the iron ring 5 is connected to the aluminum shell 4, a gap is left between the connecting piece 7 and the iron ring 5 and the induction magnet 6 is fixedly connected, and the iron ring 5 and the induction magnet 6 are magnetically connected. , and without external force, the iron ring 5 and the induction magnet 6 are in a mutually fitting state, and there is a gap between the aluminum shell 4 and the iron ring 5. At the same time, because the base 3 is placed above the base 1, under the support of the side wall of the receiving groove 101, there is a gap between the bottom surface of the base 1 on the bottom surface of the base 3, and the induction magnet 6 is movably arranged in the through column 301. In this way, after pressing the aluminum shell 4, the aluminum shell 4 has a downward pressing space, and the induction magnet 6 will also move downward with the aluminum shell 4 to confirm the selected household appliance function. Since the iron ring 5 not only abuts against the limiting part but also has a gap with the connecting member 7, the iron ring 5 will not move downward with the aluminum shell 4. As the aluminum shell 4 is pressed, the aluminum shell 4 will collide with the iron ring 5, and the two metal materials will emit an obvious collision sound when colliding, so as to improve the pressing feedback sound of the magnetic control knob, and prevent the magnetic control knob from being pressed multiple times or vigorously by the user, so as to improve the service life of the magnetic control knob from another aspect. Since the connecting member 7 is fixedly connected to the induction magnet 6, when the user presses the aluminum shell 4, the induction magnet 6 is separated from the iron ring 5 by the external force. When the user releases the aluminum shell 4, that is, the external force disappears, the induction magnet 6 will fit with the iron ring 5 under the action of the magnetic force, thereby resetting the magnetic control knob. In this embodiment, the terms "upper" and "lower" and other positions or positional relationships are based on the positions or positional relationships shown in the drawings, and do not mean that the device or component must have a specific position, be constructed and operated in a specific position.

[0051] In this embodiment, Figure 1 and Figure 2 As shown in , the magnetic control knob also includes a connecting sleeve button 8 and a rotating seat 9, which are accommodated between the aluminum shell 4 and the base 1, and the aluminum shell 4 is covered above the connecting sleeve button 8 and the rotating seat 9, wherein the aluminum shell 4 is connected to the connecting sleeve button 8, and the connecting sleeve button 8 is connected to the rotating seat 9, so that when the user rotates the aluminum shell 4, the connecting sleeve button 8 and the rotating seat 9 can be driven to rotate synchronously. For example, as Figure 1 and Figure 3As shown in , a first ridge 401 is provided on the inner wall of the aluminum shell 4, and the connecting button 8 is located above the first ridge 401, that is, the connecting button 8 is clamped between the top surface of the aluminum shell 4 and the first ridge 401 to prevent the connecting button 8 from moving vertically relative to the aluminum shell 4. A first groove 402 is provided on the inner wall of the aluminum shell 4, and a first protrusion 801 is correspondingly provided on the outer wall of the connecting button 8. During assembly, the first protrusion 801 will be clamped into the first groove 402 to prevent the connecting button 8 from rotating horizontally relative to the aluminum shell 4, thereby realizing the mutual connection between the connecting button 8 and the aluminum shell 4. Figure 1 and Figure 6 As shown in the figure, the rotating seat 9 is provided with a hollow clamping column 901, wherein the clamping column 901 is sleeved on the outside of the through column 301 of the base 3, a through hole 802 is provided in the middle of the connecting button 8, the clamping column 901 is placed in the through hole 802, a second protrusion 8021 is provided on the inner wall of the through hole 802, and a second groove 9011 is provided on the outer periphery of the clamping column 901, the second protrusion 8021 can be clamped in the second groove 9011 to prevent lateral rotation between the connecting button 8 and the rotating seat 9, so as to realize that when the aluminum shell 4 is rotated, the connecting button 8 and the rotating seat 9 are synchronously driven to rotate. At the same time, the second protrusion 8021 can slide in the second groove 9011. Since the rotating seat 9 is sleeved outside the through column 301, that is, the rotating seat 9 is connected to the base 3, the base 3 does not move synchronously with the downward pressure of the aluminum shell 4. At the same time, the rotating seat 9 is connected to the aluminum shell 4 through the connecting sleeve button 8. In order to enable the aluminum shell 4 to be pressed smoothly, the aluminum shell 4 and the rotating seat 9 need to be able to slide relative to each other in the vertical direction. In this way, the second protrusion 8021 is slidably set in the second groove 9011, which can ensure that the magnetic control knob is pressed down smoothly.

[0052] As preferably, Figure 1 and Figure 5As shown in the figure, the base 3 also includes a damping portion 302 arranged around the through column 301, wherein the damping portion 302 is a continuous wave groove. Specifically, the rotating seat 9 is installed between the damping portion 302 of the base 3 and the through column 301. The rotating seat 9 also includes an elastic member 902 and a ball 903 connected to each other. The elastic member 902 is arranged on the outer periphery of the rotating seat 9 so that the ball 903 abuts against the damping portion 302. As the rotating seat 9 rotates, the ball 903 can be driven to move along the damping portion 302. When the user rotates the aluminum shell 4, the rotating seat 9 will be driven to rotate synchronously. Since the damping portion 302 is a continuous wave groove, such a design can improve the user's experience in the process of turning the magnetic control knob. For example, a mounting hole can be opened on the side wall of the outer periphery of the rotating seat 9, and the elastic member 902 can be clamped in the mounting hole. The setting of the mounting hole can protect the elastic member 902 and prevent the elastic member 902 from shaking significantly during the rotation of the rotating seat 9, so as to ensure the stability of the magnetic control knob during the rotation process. The elastic member 902 in this embodiment can be a spring or other components, and there is no specific limitation.

[0053] As preferably, Figure 1 As shown in , the magnetic control knob also includes a cover plate 10, wherein the cover plate 10 passes through the clamping column 901 and then is covered on the damping part 302, wherein an opening is provided in the middle of the cover plate 10, and after the opening passes through the clamping column 901, the edge area of ​​the cover plate 10 is covered above the damping part 302, and the setting of the cover plate 10 can prevent external dust or impurities from entering the damping part 302, so as to further ensure the experience of the magnetic control knob rotation process. Exemplarily, a plurality of first protruding columns 303 are provided on the base 3, and the plurality of first protruding columns 303 are arranged at intervals along the upper end surface of the damping part 302, and a plurality of first positioning holes are correspondingly provided on the cover plate 10, and the first protruding columns 303 are clamped in the first positioning holes during assembly to position and assemble the cover plate 10.

[0054] Preferably, a first annular ridge 501 is provided on the outer periphery of the iron ring 5, and a second annular ridge 3011 is provided on the inner wall of the through column 301. When the iron ring 5 is placed inside the through column 301, the first annular ridge 501 abuts against the top of the second annular ridge 3011. In this way, the upper area of ​​the first annular ridge 501 in the iron ring 5 is located above the second annular ridge 3011, and the lower area is located below the second annular ridge 3011. In this way, the induction magnet 6 can be easily fitted with the iron ring 5. Specifically, the second annular ridge 3011 is a limiting portion to prevent the iron ring 5 from falling off from the through column 301.

[0055] For example, Figure 1 and Figure 4As shown in , a plurality of second protruding columns 102 are provided on the base 1, and the plurality of second protruding columns 102 are spaced apart along the bottom surface of the base 1, and a plurality of second positioning holes are correspondingly provided on the base 3. During assembly, the second protruding columns 102 are inserted into the corresponding second positioning holes so that the base 1 and the base 3 can be assembled with each other. Further, the magnetic control knob also includes a locking assembly for locking the base 1 and the base 3 with each other. Bolts can be selected for the locking assembly. Positioning holes are provided on the base 1, and internal threads are provided in the positioning holes. The bolts are passed through the base 3 and locked with the base 1 to achieve locking of the base 3 and the base 1. Other components can also be selected for the locking assembly, and there is no specific limitation.

[0056] As preferably, Figure 1 As shown in the figure, the magnetic control knob also includes a first gasket 11 and a second gasket 12, wherein the first gasket 11 is fitted on the bottom surface of the base 1, and the first gasket 11 can prevent the base 1 from sliding relative to the household appliance panel, affecting the user experience of the magnetic control knob, and the second gasket 12 is fitted between the aluminum shell 4 and the connecting sleeve 8 to protect the connecting sleeve 8 and prevent the user from damaging the connecting sleeve 8 when pressing the aluminum shell 4.

[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A magnetic control knob, characterized in that: include: The base (1) is provided with a plurality of accommodating grooves (101) around the base. A fixed magnet (2), wherein a plurality of the fixed magnets (2) are provided, the fixed magnets (2) are placed in one-to-one correspondence with the receiving grooves (101), and adjacent fixed magnets (2) have opposite polarities; A base (3) is arranged above the base (1), the base (3) is provided with a hollow through-column (301), and a limiting portion is provided inside the through-column (301); The aluminum shell (4) is in the shape of a cylinder with one end open, and the aluminum shell (4) is disposed on the base (1) so that the two can move relative to each other; An iron ring (5) is placed in the through-column (301) and abuts against the limiting portion, wherein the limiting portion is used to prevent the iron ring (5) from falling off; An induction magnet (6) is located below the iron ring (5), and the induction magnet (6) and the iron ring (5) can be selectively fitted; A connecting piece (7) passes through the induction magnet (6) and the iron ring (5) from bottom to top and is connected to the aluminum shell (4), a gap is left between the connecting piece (7) and the iron ring (5), the connecting piece (7) is fixedly connected to the induction magnet (6), a gap is left between the aluminum shell (4) and the iron ring (5), and the induction magnet (6) is movably placed in the penetration column (301); The sensor is located in the panel of the household appliance and connected to the household appliance, and the sensor is configured to sense the change of the magnetic field to adjust the function of the household appliance.

2. The magnetic control knob according to claim 1, characterized in that: The magnetic control knob further comprises a connecting sleeve button (8) and a rotating seat (9); the aluminum shell (4) is covered with the connecting sleeve button (8) and the rotating seat (9); the connecting sleeve button (8) is connected to the aluminum shell (4); the rotating seat (9) is connected to the connecting sleeve button (8); and the aluminum shell (4), the connecting sleeve button (8) and the rotating seat (9) can rotate synchronously.

3. The magnetic control knob according to claim 2, characterized in that: The inner wall of the aluminum shell (4) is provided with a first ridge (401), the connecting button (8) is located above the first ridge (401), the inner wall of the aluminum shell (4) is also provided with a first groove (402), the outer wall of the connecting button (8) is correspondingly provided with a first protrusion (801), the first protrusion (801) can be clamped in the first groove (402), the rotating seat (9) includes a hollow clamping column (901), the clamping column (901) is sleeved outside the through column (301), the connecting button (8) is provided with a through hole (802), the inner wall of the through hole (802) is provided with a second protrusion (8021), the outer periphery of the clamping column (901) is provided with a second groove (9011), the second protrusion (8021) can slide in the second groove (9011).

4. The magnetic control knob according to claim 2, characterized in that: The base (3) comprises a damping portion (302), wherein the damping portion (302) is a continuous wave groove, and the damping portion (302) is arranged around the through-column (301). The rotating seat (9) is located between the damping portion (302) and the through-column (301). The rotating seat (9) further comprises an elastic member (902) and a round ball (903) connected to each other, wherein the elastic member (902) is arranged on the outer periphery of the rotating seat (9), and the round ball (903) is in contact with the damping portion (302). As the rotating seat (9) rotates, the round ball (903) can be driven to move along the damping portion (302).

5. The magnetic control knob according to claim 4, characterized in that: The magnetic control knob also includes a cover plate (10), and the cover plate (10) is used to cover the damping part (302).

6. The magnetic control knob according to claim 5, characterized in that: The base (3) is provided with a plurality of first protruding columns (303), and the plurality of first protruding columns (303) are arranged at intervals along the upper end surface of the damping portion (302); the cover plate (10) is correspondingly provided with a plurality of first positioning holes, and the first protruding columns (303) can be inserted into the first positioning holes.

7. The magnetic control knob according to claim 1, characterized in that: The iron ring (5) is provided with a first annular ridge (501) on its outer periphery, and the inner wall of the through-column (301) is provided with a second annular ridge (3011). When the iron ring (5) is placed in the through-column (301), the first annular ridge (501) abuts against the second annular ridge (3011) to prevent the iron ring (5) from falling off along the through-column (301). The second annular ridge (3011) is the limiting portion.

8. The magnetic control knob according to claim 1, characterized in that: The base (1) is provided with a plurality of second protruding columns (102), and the plurality of second protruding columns (102) are arranged at intervals along the bottom surface of the base (1); the base (3) is correspondingly provided with a plurality of second positioning holes, and the second protruding columns (102) can be inserted into the second positioning holes.

9. The magnetic control knob according to claim 1, characterized in that: The magnetic control knob also includes a locking assembly, which is used to lock the base (1) and the pedestal (3).

10. The magnetic control knob according to claim 2, characterized in that: The magnetic control knob further comprises a first gasket (11) and a second gasket (12); the first gasket (11) is arranged in close contact with the bottom surface of the base (1); and the second gasket (12) is located between the aluminum shell (4) and the connecting sleeve (8).

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