Knob capable of realizing induction through magnetic field intensity difference, rotary button and closestool

Abstract

The utility model relates to a knob capable of realizing induction through magnetic field intensity difference, a rotary button and a closestool. The knob comprises a main body, a rotating structure, a magnetic element and a Hall sensor. The rotating structure is arranged around the main body and can rotate relative to the main body in the circumferential direction of the main body; the magnetic assembly comprises a plurality of magnetic structures, the multiple magnetic structures are arranged on the rotating structure and are sequentially arranged at intervals in the circumferential direction of the main body, and the magnetic field intensities of at least two magnetic structures are different; the Hall sensor is arranged on the main body and is used for sensing the magnetic field of the magnetic structures, and in the rotating process of the rotating structure relative to the main body, the multiple magnetic structures can be sequentially opposite to the Hall sensor. The knob is low in manufacturing difficulty and manufacturing cost.

Description

Technical Field

[0001] The present application relates to the technical field of knobs, and in particular to a knob, a rotary button and a toilet that realize induction through a difference in magnetic field strength. Background Art

[0002] In smart toilets, a rotary button is usually provided for users to control the switch, switching or adjustment of specific functions. The rotary button includes a button seat and a knob provided on the button seat. The knob can be turned by the user, and the user can also operate by pressing the knob. Among them, the user can switch the water type of the spray function, adjust the temperature of the seat heating, etc. by turning the knob. However, the structural setting or algorithm of the traditional knob sensing rotation stroke is usually more complicated, which increases the manufacturing difficulty and manufacturing cost. Summary of the invention

[0003] Based on this, it is necessary to provide a knob, a rotary button and a toilet that realize sensing through the difference in magnetic field strength in order to address the problem that the structural setting or algorithm of the traditional knob sensing rotation stroke is usually more complicated.

[0004] A knob for realizing induction through a difference in magnetic field strength, the knob comprising:

[0005] main body;

[0006] A rotating structure, disposed around the main body and capable of rotating relative to the main body along the circumference of the main body;

[0007] A magnetic assembly, comprising a plurality of magnetic structures, wherein the plurality of magnetic structures are disposed on the rotating structure and are sequentially spaced along the circumference of the main body, and at least two of the magnetic structures have different magnetic field strengths;

[0008] And, a Hall sensor is arranged on the main body and is used to sense the magnetic field of the magnetic structure. During the rotation of the rotating structure relative to the main body, the plurality of magnetic structures can be opposite to the Hall sensor in sequence.

[0009] In the above-mentioned knob, the magnetic field strengths of at least two magnetic structures arranged at circumferential intervals along the main body on the rotating structure are different. When the rotating structure rotates relative to the main body, the multiple magnetic structures can be opposite to the Hall sensors in turn. The Hall sensor can sense the magnetic field of the relative magnetic structure. According to the sensed magnetic field strength of the magnetic structure, the relative position of the rotating structure and the main body can be obtained, thereby obtaining the gear change of the knob. The structure of the magnetic structure and the Hall sensor is simple and the cost is low. There is no need to first obtain the rotation stroke of the rotating structure and then obtain the gear change of the knob through a complex algorithm, which is conducive to reducing the manufacturing difficulty and manufacturing cost of the knob.

[0010] In one embodiment, at least four magnetic structures are opposed to each other in pairs, and the magnetic field strengths of two opposing magnetic structures are the same.

[0011] In one embodiment, two Hall sensors are provided, and the two Hall sensors are provided on opposite sides of the axis of the main body, and a connecting line of the two Hall sensors passes through the axis of the main body.

[0012] In one embodiment, the knob further includes a control element, wherein the control element is disposed on the main body, the Hall sensor is electrically connected to the control element, and the control element is preset with at least two gears, and the at least two gears correspond one-to-one to the magnetic structures with different magnetic field strengths.

[0013] In one embodiment, the knob also includes a control element electrically connected to the Hall sensor, the control element is disposed on the main body, the Hall sensor is disposed on the control element and is located between the control element and the main body; the main body includes a main body portion and an annular protrusion protruding from the main body portion, the surface of the control element facing the main body abuts against the annular protrusion, and the Hall sensor is located on the inner side of the annular protrusion.

[0014] In one embodiment, the magnetic assembly includes a plurality of flexible connection structures, and any two adjacent magnetic structures are connected via the flexible connection structures.

[0015] In one embodiment, the magnetic structure and the flexible connection structure are an integrated structure;

[0016] And / or, the magnetic component is embedded in the surface of the rotating structure facing the main body.

[0017] In one embodiment, the knob further comprises a plurality of magnetic elements, the plurality of magnetic elements are arranged on the main body and are sequentially spaced along the circumference of the main body, the magnetic elements can be arranged opposite to the magnetic structure in a one-to-one correspondence, and the magnetic elements and the magnetic structure can attract each other;

[0018] And / or, the same magnetic pole of the plurality of magnetic structures faces the axis of the body.

[0019] A rotary button comprises a button seat and a rotary knob as described in any one of the above embodiments, wherein the rotary knob is arranged on the button seat and can reciprocate axially relative to the button seat.

[0020] A toilet comprises the rotating button as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1Schematic diagram of the structure of the knob in some embodiments.

[0022] Figure 2 for Figure 1 Exploded view of the knob shown one way.

[0023] Figure 3 for Figure 1 An exploded view of another way of turning the knob is shown.

[0024] Figure 4 for Figure 1 A schematic cross-sectional view of the knob is shown.

[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the knob shown in another angle.

[0026] Reference numerals:

[0027] 10. Knob; 11. Rotating structure; 111. Accommodating groove; 12. Main body; 121. Main body; 122. Annular protrusion; 123. Sliding part; 124. Contact structure; 13. Control element; 14. Magnetic component; 141. Magnetic structure; 142. Flexible connection structure; 15. Hall sensor; 16. Display screen; 17. Cover; 18. Magnetic element; 19. Conductive element. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0034] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 is a schematic diagram of the structure of the knob 10 in some embodiments, Figure 2 for Figure 1 An exploded view of the knob 10 in one of the modes is shown. Figure 3 for Figure 1The exploded schematic diagram of another mode of the knob 10 is shown. The knob 10 provided in the present application may include a rotating structure 11, a main body 12 and a control element 13. The rotating structure 11 is arranged around the main body 12 and can rotate relative to the main body 12 along the circumference of the main body 12. The control element 13 is arranged on the main body 12 and can obtain the position change of the rotating structure 11 relative to the main body 12 to realize the rotation sensing function of the knob 10. For example, if the rotating structure 11 and the main body 12 are in different relative positions, corresponding to different gears, when the user rotates the knob 10, that is, drives the rotating structure 11 to rotate relative to the main body 12, the control element 13 can obtain the relative position change of the rotating structure 11 and the main body 12 to control the switch, switching or adjustment of a specific function. The knob 10 can be used in a toilet, for example, it is arranged on the toilet seat of the toilet. When the knob 10 switches at different gears, the control element 13 can control the water type switching of the toilet spray function, the adjustment of the seat heating temperature, etc. according to the gear change of the knob 10. Of course, the knob 10 can also be used for any other applicable switch, switch or adjustment products that can be controlled by the knob 10, including but not limited to fan switch and wind speed control, lighting switch and brightness adjustment lighting scenes, which are not limited in this application.

[0035] In some embodiments, the knob 10 further includes a magnetic component 14, which includes a plurality of magnetic structures 141. The plurality of magnetic structures 141 are disposed on the rotating structure 11 and are sequentially spaced along the circumference of the main body 12, wherein at least two magnetic structures 141 have different magnetic field strengths. Each magnetic structure 141 can independently generate a magnetic field. The plurality of magnetic structures 141 can be a plurality of independent elements capable of generating a magnetic field, or can be structures sequentially disposed on the same carrier, or can be connected as an integrated structure through other structures, as long as the magnetic component 14 forms a plurality of magnetic structures 141 capable of independently generating a magnetic field in the circumference of the main body 12. The knob 10 further includes a Hall sensor 15, which is disposed on the main body 12 and is used to sense the magnetic field of the magnetic structure 141. During the rotation of the rotating structure 11 relative to the main body 12, the plurality of magnetic structures 141 can sequentially oppose the Hall sensor 15.

[0036] Among them, when the Hall sensor 15 is opposite to different magnetic structures 141, the distance between the Hall sensor 15 and the magnetic structure 141 can be the same. In the present application, the description of the different magnetic field strengths of the two magnetic structures 141 can be understood as when the Hall sensor 15 is respectively opposite to the two magnetic structures 141, the magnetic field strengths sensed by the Hall sensor 15 are different.

[0037] In some embodiments, the Hall sensor 15 is electrically connected to the control element 13, and the control element 13 is preset with at least two gears, and the at least two gears correspond one-to-one to the magnetic structures 141 with different magnetic field strengths. For example, the number of gears preset by the control element 13 can be equal to the number of magnetic structures 141 with different magnetic field strengths, and each gear corresponds to each magnetic field strength. When the rotating structure 11 rotates relative to the main body 12 until one of the control elements 13 is opposite to the Hall sensor 15, the control element 13 can obtain the position and rotation stroke of the rotating structure 11 relative to the main body 12 based on the magnetic field strength sensed by the Hall sensor 15, thereby realizing the switching, switching or adjustment of a specific function according to the corresponding gear. The control element 13 can be a circuit board of the knob 10, or it can be a chip on the circuit board of the knob 10 specifically used to realize the rotation sensing function. The present application takes the circuit board as an example.

[0038] In the above-mentioned knob 10, the magnetic field strengths of at least two magnetic structures 141 arranged at circumferential intervals along the main body 12 on the rotating structure 11 are different. When the rotating structure 11 rotates relative to the main body 12, the multiple magnetic structures 141 can be opposite to the Hall sensor 15 in turn, and the Hall sensor 15 can sense the magnetic field of the relative magnetic structure 141. According to the sensed magnetic field strength of the magnetic structure 141, the relative position of the rotating structure 11 and the main body 12 can be obtained, thereby obtaining the gear change of the knob 10. The magnetic structure 141 and the Hall sensor 15 have a simple structure and low cost, and there is no need to first obtain the rotation stroke of the rotating structure 11 and then obtain the gear change of the knob 10 through a complex algorithm, which is beneficial to reducing the manufacturing difficulty and manufacturing cost of the knob 10.

[0039] In some embodiments, the same magnetic pole of the multiple magnetic structures 141 is arranged toward the axis of the main body 12, for example, the south poles of the multiple magnetic structures 141 are all toward the main body 12, and the north poles are all facing away from the main body 12, or the south poles of the multiple magnetic structures 141 are all facing away from the main body 12, and the south poles are all facing toward the main body 12. In this way, the positive and negative variables of the magnetic field strength sensed by the Hall sensor 15 can be limited, reducing the difficulty of gear control.

[0040] In some embodiments, the magnetic field strengths of the multiple magnetic structures 141 are different, and each magnetic structure 141 corresponds to a gear position. In some embodiments, the distances between two adjacent magnetic structures 141 are equal. Of course, the distances between each adjacent magnetic structure 141 may also be different. For example, the distance between several adjacent magnetic structures 141 may be smaller than the distance between other adjacent magnetic structures 141. The specific number and arrangement of the magnetic structures 141 can be designed according to the requirements of the number of gear positions and the requirements of the rotation operation of the knob 10, and are not limited in this application.

[0041] When the number of magnetic structures 141 is greater than the number of gears required by the knob 10, for example, when the number of magnetic structures 141 is twice the number of gears required by the knob 10, in some embodiments, multiple magnetic structures 141 are opposite to each other, and the magnetic field strengths of the two opposite magnetic structures 141 are the same. Therefore, when the rotating structure 11 is roughly annular, the magnetic structures 141 located on the two semicircular areas of the rotating structure 11 can correspond to all the gears required by the knob 10, so that when the magnetic structures 141 on the two semicircular areas of the rotating structure 11 are opposite to the Hall sensor 15, they can achieve switching of different gears to meet the control of the required functions. It can not only shorten the rotation formation required for gear switching and improve the user experience, but also avoid the situation where the rotation stroke is too large and the rotation sensing cannot be achieved, and improve the performance stability of the knob 10. It should be noted that in the present application, the description of two elements being opposite can be understood as the line connecting the geometric centers of the two elements passing through the axis of the main body 12. In the present application, the difference in magnetic field strength between any two magnetic structures 141 with different magnetic field strengths should be greater than the resolution of the magnetic field strength that can be sensed by the Hall sensor 15, so as to accurately judge the magnetic field structure relative to the Hall sensor 15 based on the magnetic field strength sensed by the Hall sensor 15, thereby improving the accuracy of the rotation sensing function and reducing the risk of misjudgment.

[0042] Furthermore, when the magnetic field strengths of the two opposing magnetic elements 18 are the same, in some embodiments, the knob 10 may be provided with two Hall sensors 15, the two Hall sensors 15 are provided on opposite sides of the axis of the main body 12, and the line connecting the geometric centers of the two Hall sensors 15 may pass through the axis of the main body 12. With such a configuration, when the rotating structure 11 rotates relative to the main body 12 until one of the magnetic structures 141 is opposite to one of the Hall sensors 15, the other Hall sensor 15 can just be opposite to the other magnetic structure 141 opposite to the magnetic structure 141, and the two Hall sensors 15 can respectively sense the two magnetic structures 141 with the same magnetic field strength. Therefore, according to whether the magnetic field strengths sensed by the two Hall sensors 15 are considered equal within the allowable error range, a more accurate gear position sensing function can be achieved to avoid misoperation or sensing errors.

[0043] The specific structural setting of the magnetic component 14 is not limited, as long as it can form a plurality of magnetic structures 141 that are arranged in sequence and have magnetism. In some embodiments, the magnetic component 14 includes a plurality of flexible connection structures 142, and any two adjacent magnetic structures 141 are connected by the flexible connection structure 142. In other words, the magnetic component 14 can be composed of a soft magnet formed by the flexible connection structure 142 and the magnetic structure 141 connected to each other. As a result, the magnetic component 14 has a flexible deformation capability, making it easier to install and remove the magnetic component 14 on the rotating structure 11.

[0044] In some embodiments, the magnetic structure 141 and the flexible connection structure 142 are an integrated structure. For example, the magnetic component 14 can be formed by mixing magnetic powder and plastic material, and multiple magnetic structures 141 are obtained by magnetizing multiple locations that are sequentially spaced apart. In this way, the structure of the magnetic component 14 is simple, the preparation difficulty is low, and the preparation cost is low, which is conducive to reducing the preparation difficulty and preparation cost of the knob 10. Of course, the magnetic structure 141 can also be formed by magnetic materials arranged at multiple spaced positions on a plastic or rubber substrate.

[0045] In some embodiments, the magnetic component 14 is embedded in the surface of the rotating structure 11 facing the main body 12. For example, when the magnetic structure 141 and the flexible connection structure 142 are an integrated structure, the surface of the rotating structure 11 facing the main body 12 may be provided with an annular receiving groove 111, and the magnetic component 14 is received in the receiving groove 111. The magnetic component 14 can be fixed to the rotating structure 11 by any applicable method such as interference fit, gluing, snap-fit, etc. It can also be seen from this that when the magnetic structure 141 and the flexible connection structure 142 are an integrated structure, the magnetic component 14 with flexible deformation ability can be installed on the rotating structure 11 as a whole or removed from the rotating structure 11, making the installation and maintenance of the magnetic component 14 more convenient.

[0046] Combination Figure 3 and Figure 4 As shown, in some embodiments, the Hall sensor 15 is disposed on the control element 13 and is located between the control element 13 and the main body 12. For example, the main body 12 includes a main body 121 and an annular protrusion 122 protruding from the main body 121 toward the control element 13, the surface of the control element 13 facing the main body 12 abuts against the annular protrusion 122, and the Hall sensor 15 is located inside the annular protrusion 122, that is, in the space surrounded by the control element 13, the annular protrusion 122 and the main body 121, and the Hall sensor 15 can be disposed adjacent to the annular protrusion 122. Thus, the main body 12 and the control element 13 can provide protection for the Hall sensor 15, and can also prevent the Hall sensor 15 from being exposed and affecting the integrity of the appearance. At the same time, the distance between the Hall sensor 15 and the magnetic structure 141 will not be too far, and it is not easy to affect the Hall sensor 15's induction of the magnetic field of the magnetic structure 141.

[0047] In some embodiments, the knob 10 further includes a display screen 16 and a cover 17. The display screen 16 includes but is not limited to any applicable display device such as a liquid crystal screen. The cover 17 is arranged around the control element 13. The display screen 16 is arranged on the cover 17 and shields the control element 13. Therefore, the cover 17 can provide protection for the control element 13 and improve the structural reliability of the knob 10. The display screen 16 can be electrically connected to the control element 13. The display screen 16 can be used to display real-time gear changes, functional status and other information, enrich the functions of the knob 10, and improve the user experience. The display screen 16 can also shield the control element 13 to prevent the control element 13 from being exposed to the knob 10, thereby improving the appearance integrity of the knob 10. The rotating structure 11 can be arranged around the cover 17 and the main body 12 to shield the cover 17 and the main body 12, thereby improving the appearance integrity of the knob 10.

[0048] In some embodiments, the rotating structure 11 can achieve rotational cooperation with the main body 12 by any means such as sliding cooperation, and the inner surface of the rotating structure 11 can also be provided with a protruding structure embedded in the cover body 17, the main body 12, or embedded between the cover body 17 and the main body 12, so as to achieve axial limitation of the rotating structure 11 and prevent the rotating structure 11 from being separated from the main body 12. Of course, the relative rotation between the rotating structure 11 and the main body 12 is not limited to the description of this application, and can also be achieved by any applicable structure.

[0049] Combination Figure 4 and Figure 5As shown, in some embodiments, the knob 10 further includes a plurality of magnetic elements 18, and the magnetic elements 18 include but are not limited to any applicable elements capable of generating a magnetic field, such as magnets and magnets. The plurality of magnetic elements 18 are disposed on the main body 12 and are sequentially spaced along the circumference of the main body 12. The rotating structure 11 can rotate relative to the main body 12 until the plurality of magnetic elements 18 and the magnetic structures 141 are disposed one by one in a corresponding manner. For example, the rotation stroke between any two adjacent magnetic elements 18 is equal to the rotation between any two adjacent magnetic structures 141. When one of the magnetic elements 18 is opposite to one of the magnetic structures 141, the other magnetic structures 141 are also opposite to the corresponding magnetic element 18. Moreover, when the magnetic structure 141 is opposite to the magnetic element 18, the magnetic element 18 and the magnetic structure 141 can attract each other, for example, the south poles of the plurality of magnetic structures 141 face the main body 12, and the north poles of the plurality of magnetic elements 18 face away from the main body 12, or vice versa. By designing the positions of the magnetic structure 141, the magnetic element 18 and the Hall sensor 15, when the Hall sensor 15 is opposite to any one of the magnetic structures 141, the multiple magnetic structures 141 are also arranged one by one opposite to the multiple magnetic elements 18. In this way, when the rotating structure 11 is rotated to a position corresponding to one of the gears, the mutual attraction between the magnetic structure 141 and the magnetic element 18 can keep the rotating structure 11 at the position corresponding to the gear, so that the sensing of the Hall sensor 15 is more accurate, and it is also easier for the user to judge whether the knob 10 is rotated to the right position.

[0050] In some embodiments, the knob 10 described in any of the above embodiments can also form a rotary button with a button seat (not shown in the figure), and the knob 10 is arranged on the button seat and can reciprocate axially relative to the button seat. It can be understood that when the user rotates the knob 10, that is, drives the rotating structure 11 to rotate relative to the main body 12, the rotation control of a specific function can be achieved, and when the user presses the knob 10, for example, drives the knob 10 to move in a direction close to the button seat, the key control function can be achieved. The rotary button includes but is not limited to being used in a toilet, and the key control function of the rotary button can be used to control any applicable function such as the switch of the flushing function of the toilet, the switch of the decorative light, etc.

[0051] In some embodiments, the main body 121 of the main body 12 is provided with a sliding portion 123 and a contact structure 124 protruding toward the button seat, and a circuit board for realizing a key sensing function may be provided on the button seat, and the sliding portion 123 is inserted into the button seat and can slide relative to the button seat, and when the knob 10 moves toward the direction close to the button seat until the contact structure 124 contacts the contact on the circuit board, the circuit board can sense the user's key operation. Of course, elastic elements such as springs and rubber may be provided in the knob 10 and the button seat to drive the knob 10 to reset when the user releases the knob 10. In some embodiments, the knob 10 also includes a conductive element 19, which may be an electric wire, and the conductive element 19 is electrically connected to the control element 13 and passes through the main body 12, and the conductive element 19 extends into the button seat and is electrically connected to the circuit board in the button seat to realize communication between the circuit board and the control element 13.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A knob that realizes induction through the difference in magnetic field strength, characterized in that: The knob comprises: main body; A rotating structure, disposed around the main body and capable of rotating relative to the main body along the circumference of the main body; A magnetic assembly, comprising a plurality of magnetic structures, wherein the plurality of magnetic structures are disposed on the rotating structure and are sequentially spaced along the circumference of the main body, at least two of the magnetic structures have different magnetic field strengths, and the same magnetic pole of the plurality of magnetic structures faces the axis of the main body; A Hall sensor is disposed on the main body and is used to sense the magnetic field of the magnetic structure. During the rotation of the rotating structure relative to the main body, the plurality of magnetic structures can be opposite to the Hall sensor in sequence; and A control element is electrically connected to the Hall sensor, and the control element is preset with at least two gears, and the at least two gears correspond one-to-one to the magnetic structures with different magnetic field strengths.

2. The knob according to claim 1, characterized in that: At least four of the magnetic structures are opposed to each other in pairs, and the magnetic field strengths of two opposing magnetic structures are the same.

3. The knob according to claim 2, characterized in that: Two Hall sensors are provided, and the two Hall sensors are arranged on two opposite sides of the axis of the main body, and a connecting line of the two Hall sensors passes through the axis of the main body.

4. The knob according to claim 1, characterized in that: The control element is arranged on the main body.

5. The knob according to claim 1, characterized in that: The knob also includes a control element electrically connected to the Hall sensor, the control element is arranged on the main body, the Hall sensor is arranged on the control element and is located between the control element and the main body; the main body includes a main body portion and an annular protrusion protruding from the main body portion, the surface of the control element facing the main body abuts against the annular protrusion, and the Hall sensor is located on the inner side of the annular protrusion.

6. The knob according to claim 1, characterized in that: The magnetic assembly includes a plurality of flexible connection structures, and any two adjacent magnetic structures are connected via the flexible connection structures.

7. The knob according to claim 6, characterized in that: The magnetic structure and the flexible connection structure are an integrated structure; and / or, The magnetic component is embedded in the surface of the rotating structure facing the main body.

8. The knob according to claim 1, characterized in that: The knob also includes a plurality of magnetic elements, which are arranged on the main body and spaced in sequence along the circumference of the main body. The magnetic elements can be arranged relative to the magnetic structure in a one-to-one correspondence, and the magnetic elements and the magnetic structure can attract each other.

9. A rotary button, characterized in that: It comprises a button seat and a knob as described in any one of claims 1 to 8, wherein the knob is arranged on the button seat and can reciprocate axially relative to the button seat.

10. A toilet, characterized in that: Comprising the rotating button as claimed in claim 9.

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