Ring type magnetic switch and magnetic damping generation method

Abstract

The application belongs to the technical field of switch devices, and provides a ring type magnetic switch and a magnetic damping generation method, which comprises a mounting base, a first ring type shaft arranged on the mounting base, a key cap movably connected to the mounting base, a second ring type shaft arranged on the key cap and corresponding to the position of the first ring type shaft, the second ring type shaft being arranged in the inner hole of the first ring type shaft and coaxial with the first ring type shaft, and a gap being arranged between the first ring type shaft and the second ring type shaft, at least one of the first ring type shaft and the second ring type shaft being a magnetic shaft, and the first ring type shaft and the second ring type shaft having an attractive magnetic force therebetween so that the key cap has a magnetic suspension force. When the key cap is pressed, the second ring type shaft on the key cap and the first ring type shaft on the mounting base are offset in position, the damping value of the attractive force between the first ring type shaft and the second ring type shaft changes, and the magnetic damping tactile feedback and the damping effect of the key are generated, and the application can be applied to the fields of a mouse, a keyboard, an automobile instrument panel and the like.

Description

Technical Field

[0001] This application belongs to the field of switchgear technology, and in particular relates to a ring magnetic switch and a method for generating magnetic damping. Background Technology

[0002] Mechanical buttons (also known as pushbuttons or switches) are human-machine interface components used to control the on / off state of circuits or trigger signals through physical operation. They have complex and precise structures and can be classified in various ways based on their triggering principle, structural design, and feedback type. A standard mechanical button typically consists of a button cap and a base, from the outside in and from top to bottom.

[0003] However, traditional mechanical button structures typically rely on elastic elements to support the keycaps and provide them with a springy feel when pressed. However, this traditional button structure usually requires a relatively large amount of force to provide the springy feedback, resulting in poor damping sensation for the user's fingers when pressing the keycaps. Furthermore, traditional mechanical button structures lack tactile feedback.

[0004] Therefore, the aforementioned technical deficiencies urgently need to be addressed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a ring-shaped magnetic switch and a method for generating magnetic damping, aiming to improve the damping effect of the button. Additionally, it provides a tactile damping effect when the button cap is pressed.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: a ring-shaped magnetic switch, comprising: Mounting base, on which a first annular shaft is provided; The keycap is movably connected to the mounting base. A second annular shaft is provided on the keycap at the position corresponding to the first annular shaft. The second annular shaft passes through the inner hole of the first annular shaft. The second annular shaft is coaxial with the first annular shaft, and there is a gap between the first annular shaft and the second annular shaft. In this design, at least one of the first and second annular shafts is a magnetic shaft, and there is a magnetic attraction between the first and second annular shafts to give the keycap a magnetic levitation force.

[0007] In this embodiment, at least one first annular groove is provided on the inner sidewall of the first annular shaft, and the first annular groove is arranged around the inner hole of the first annular shaft so that at least two first convex rings are formed on the inner sidewall of the first annular shaft. At least one second annular groove is provided on the outer sidewall of the second annular shaft, and the second annular groove is arranged around the second annular shaft so that at least two second convex rings are formed on the outer sidewall of the second annular shaft.

[0008] In this embodiment, a magnetic coil is provided on the outer wall of at least one of the first annular shaft and the second annular shaft. The magnetic coil is used to adjust the magnetic strength of the first annular shaft or the second annular shaft, and the magnetic coil is wound around the outer wall of the first annular shaft or the second annular shaft.

[0009] In this embodiment, the first convex ring and the second convex ring are further configured such that there is a gap between them, the first annular groove and the second annular groove are configured in a one-to-one correspondence, and the first convex ring and the second convex ring are configured in a one-to-one correspondence.

[0010] In this embodiment, the number of first annular grooves is the same as the number of second annular grooves, the width of the first convex ring is the same as the width of the second convex ring, and the thickness of the first annular shaft is the same as the thickness of the second annular shaft.

[0011] In this embodiment, the mounting base is detachably connected to the first annular shaft, and the keycap is detachably connected to the second annular shaft.

[0012] In this embodiment, the mounting base is provided with a plurality of first limiting grooves, and the key cap is provided with a limiting pin at the position corresponding to the limiting groove. Both the limiting groove and the limiting pin extend along the axial direction of the first annular shaft, and the plurality of limiting grooves are evenly arranged at the edge of the mounting base.

[0013] In this embodiment, a second limiting groove is provided on the side wall of the keycap. The second limiting groove extends along the axial direction of the first annular shaft. A limiting protrusion is provided on the mounting base at the position corresponding to the second limiting groove. The limiting protrusion passes through the second limiting groove and is used to limit the movement of the keycap.

[0014] A second aspect of this application provides a method for generating magnetic damping based on the toroidal magnetic switch described in any one of the first aspects. The method for generating magnetic damping includes the following steps: When the button cap is pressed by the user, the button cap drives the second annular shaft to descend, and the gap between the button cap and the mounting base becomes smaller. The mounting base is provided with a first annular shaft, and at least two first protruding rings and at least two second protruding rings are respectively provided on the opposite surfaces between the first annular shaft and the second annular shaft. The second annular shaft descends, causing an offset between the second convex ring and the first convex ring. The first and second convex rings correspond one-to-one under the action of magnetic attraction, and the first and second convex rings attract each other. The magnetic attraction between the first convex ring and the second convex ring is changed, thereby generating magnetic damping between the first convex ring and the second convex ring.

[0015] Compared with existing technologies, this application provides a ring-shaped magnetic switch and a method for generating magnetic damping. In this invention, when the keycap is pressed, the second annular shaft on the keycap shifts position relative to the first annular shaft on the mounting base, causing a change in the damping value of the attraction between the first and second annular shafts, thus generating tactile feedback from magnetic damping and effectively improving the damping effect of the key. Furthermore, at least two first convex rings and at least two second convex rings are respectively provided on the opposing surfaces between the first and second annular shafts, which can give the keycap a tactile damping effect when pressed. This solution can be applied to fields such as mice, keyboards, and automotive dashboards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a ring-shaped magnetic switch provided in this embodiment; Figure 2 This is an exploded view of a ring-shaped magnetic switch provided in this embodiment; Figure 3 This is an exploded view of another perspective of a ring-shaped magnetic switch provided in this embodiment; Figure 4 This is an exploded view of the first and second annular shafts of a ring-shaped magnetic switch provided in this embodiment; Figure 5 This is an exploded view of the first and second annular shafts of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 6 This is an exploded view of the first and second annular shafts of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 7 This is an exploded view of the first and second annular shafts of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 8 This is an exploded view of the overall structure of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 9 This is an exploded view of the overall structure of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 10 This is an exploded view of the overall structure of another embodiment of a ring-shaped magnetic switch provided in this embodiment; Figure 11This is a schematic diagram of the overall structure of another embodiment of a ring-shaped magnetic switch provided in this embodiment.

[0018] In the figure: 1. Mounting base; 11. First annular shaft; 12. First annular groove; 13. First convex ring; 14. First limiting groove; 15. Limiting protrusion; 2. Key cap; 21. Second annular shaft; 22. Second annular groove; 23. Second convex ring; 24. Limiting pin; 25. Second limiting groove; 3. Magnetic coil; 4. Grating; 41. IR transmitter; 42. PT receiver; 43. Substrate; 44. Through hole; 5. Hall sensor; 51. Clearance hole. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0023] This invention provides, for example Figure 1 , Figure 2 , Figure 3 and Figure 4 The diagram shows a ring-shaped magnetic switch, a switch structure that generates a magnetic damping effect through magnetic materials. Its applications are very wide, such as buttons in electronic devices, knobs in car infotainment systems, and control buttons in home appliances. This improves the damping feel when using the button. The main structure of this invention includes: a mounting base 1 and a button cap 2. The mounting base 1 is used to mount and fix the switch structure, and also provides a fixed foundation for the button cap 2. A first annular shaft 11 is provided on the mounting base 1; the button cap 2 is movably connected to the mounting base 1, and a second annular shaft 21 is provided on the button cap 2 at a position corresponding to the first annular shaft 11. The second annular shaft 21 passes through the inner hole of the first annular shaft 11, and the second annular shaft 21 is coaxial with the first annular shaft 11, with a gap between them. In some embodiments, the first annular shaft 11 and the second annular shaft 21 are respectively located at the axis of the mounting base 1 and the button cap 2. Furthermore, the axial direction of the first annular shaft 11 and the second annular shaft 21 is the direction of movement of the button cap 2. So that when the button cap 2 is pressed, the first annular shaft 11 moves along the axis of the second annular shaft 21.

[0024] Specifically, the mounting base 1 has a mounting groove for mounting the first annular shaft 11, and the keycap 2 has a fixing pin for fixing the second annular shaft 21. When installing and fixing the second annular shaft 21, the second annular shaft 21 is passed through the fixing pin.

[0025] At least one of the first annular shaft 11 and the second annular shaft 21 is a magnetic shaft. Therefore, based on the mutual magnetic attraction between the first annular shaft 11 and the second annular shaft 21, the first annular shaft 11 supports the button cap 2 to float.

[0026] In Embodiment 1, the magnetic poles of the first convex ring 13 and the second convex ring 23 are opposite, that is, the magnetic poles of the opposing surfaces of the first annular shaft 11 and the second annular shaft 21 are opposite (S pole-N pole, or N pole-S pole), which can make them attract each other. This improves the magnetic damping effect between them. In some embodiments, both the first annular shaft 11 and the second annular shaft 21 are magnetically attracted annular shafts. Furthermore, the magnetic poles of the opposing surfaces of the first annular shaft 11 and the second annular shaft 21 are opposite, so that the magnetic poles of the first convex ring 13 and the second convex ring 23 are opposite, which can make them attract each other. There is an attractive magnetic force between the first annular shaft 11 and the second annular shaft 21, so that the button cap 2 has a magnetic levitation force. The first annular shaft 11 and the second annular shaft 21 can be configured as a single-piece magnetic shaft, or they can be configured as an annular magnetic shaft formed by splicing multiple magnetic components.

[0027] In some embodiments, both the button cap 2 and the mounting base 1 are made of non-magnetic materials to avoid disturbing the magnetic fields of the first convex ring 13 and the second convex ring 23. The button cap 2 can be made of lightweight plastic to better support the button cap 2 in levitation under the magnetic attraction of the first annular shaft 11.

[0028] In some other embodiments, the first convex ring 13 and the second convex ring 23 have the same magnetic poles, that is, the magnetic poles of the opposite surfaces between the first annular shaft 11 and the second annular shaft 21 are the same (S pole-S pole, or N pole-N pole), which can make the two repel each other and make the button cap 2 subject to magnetic repulsion damping effect when it is pressed.

[0029] It should be noted that traditional mechanical button structures typically rely on elastic elements to support the button cap 2, giving it a springy feel when pressed. However, this traditional button structure usually requires a relatively large amount of elastic feedback, resulting in poor damping effect felt by the user's fingers when pressing the button cap 2. Furthermore, traditional mechanical button structures lack tactile feedback.

[0030] In this invention, when the keycap 2 is pressed, the second annular shaft 21 on the keycap 2 shifts position relative to the first annular shaft 11 on the mounting base 1. This causes a change in the damping value of the attraction between the first annular shaft 11 and the second annular shaft 21, generating magnetic damping tactile feedback and effectively improving the damping effect of the key. Furthermore, at least two first convex rings 13 and at least two second convex rings 23 are respectively provided on the opposing surfaces between the first annular shaft 11 and the second annular shaft 21, which allows the keycap 2 to have a tactile damping effect when pressed. This solution can be applied to mice, keyboards, automotive dashboards, and other fields.

[0031] The first annular shaft 11 and the second annular shaft 21 can be circular shafts or annular shafts of other shapes.

[0032] Furthermore, such as Figure 8 , Figure 10 and Figure 11 As shown, in the signal transmission section, this application preferably uses optical signals as the signal transmission method for button activation. This reduces the contact and friction between the mounting base 1 and the button cap 2, improving the feel and lifespan of the switch. Of course, this application can also use traditional spring contact as the signal transmission method for button activation.

[0033] Specifically, a substrate 43 is provided on the mounting base 1. A through hole 44 is provided on the substrate 43 and is disposed opposite to the first annular shaft 11. An IR transmitter 41 and a PT receiver 42 are provided at the edge of the through hole 44 and are disposed opposite to each other. A grating 4 is provided on the first annular shaft 11. The grating 4 extends along the direction of the through hole 44 and passes through the through hole 44. At least two light-transmitting holes are provided on the grating 4, thereby forming a switching structure for optical signal transmission.

[0034] Furthermore, such as Figure 9 As shown, in the signal transmission section, this application can also use a Hall sensor as the signal transmission method for button triggering. This reduces the contact and friction between the mounting base 1 and the button cap 2, improving the feel and lifespan of the switch.

[0035] Specifically, a substrate 43 is provided on the mounting base 1, and a Hall sensor 5 is provided on the substrate 43. The Hall sensor 5 is used to detect changes in the magnetic field, thereby forming a switching structure for transmitting Hall signals. In some embodiments, an avoidance hole 51 is provided on the substrate 43 at a position corresponding to the first annular shaft 11, so as to increase the vertical travel of the first annular shaft 11 and prevent the first annular shaft 11 from touching the substrate 43 when descending. The Hall sensor 5 is located at the edge of the avoidance hole 51.

[0036] Furthermore, such as Figure 5 and Figure 6 As shown, at least one first annular groove 12 is provided on the inner hole sidewall of the first annular shaft 11. The first annular groove 12 is arranged around the inner hole of the first annular shaft 11 so that at least two first convex rings 13 are formed on the inner hole sidewall of the first annular shaft 11.

[0037] Furthermore, such as Figure 5 and Figure 6 As shown, at least one second annular groove 22 is provided on the outer side wall of the second annular shaft 21. The second annular groove 22 is arranged around the second annular shaft 21 so that at least two second convex rings 23 are formed on the outer side wall of the second annular shaft 21.

[0038] In some embodiments, at least one of the first annular groove 12 and the second annular groove 22 is filled with a non-magnetic material.

[0039] Furthermore, such as Figure 7 As shown, a magnetic coil 3 is provided on the outer wall of at least one of the first annular shaft 11 and the second annular shaft 21. The magnetic coil 3 is used to adjust the magnetic strength of the first annular shaft 11 or the second annular shaft 21. The magnetic coil 3 is wound around the outer wall of the first annular shaft 11 or the second annular shaft 21.

[0040] Specifically, at least one of the first annular shaft 11 and the second annular shaft 21 has an annular mounting groove on its outer side wall, and the magnetic coil 3 is wound inside the annular mounting groove. The magnetic coil 3 is electrically connected to the circuit board at the power supply end, and generates electromagnetic force when the magnetic coil 3 is energized. This can change the magnetic strength of the first annular shaft 11 or the second annular shaft 21, ultimately achieving the damping effect of adjusting the button cap 2.

[0041] Furthermore, such as Figure 2 , Figure 3 and Figure 5 As shown, there is a gap between the first convex ring 13 and the second convex ring 23 to avoid friction between the first annular shaft 11 and the second annular shaft 21, which would affect the magnetic damping feedback of the keycap 2. The first annular groove 12 and the second annular groove 22 are set in a one-to-one correspondence, and the first convex ring 13 and the second convex ring 23 are set in a one-to-one correspondence.

[0042] It should be noted that a first annular groove 12 is formed on the inner sidewall of the first annular shaft 11, and at least two first convex rings 13 are formed with the first annular groove 12 as the dividing line. The formation of the first annular groove 12 weakens the magnetism at the location of the first annular groove 12 on the first annular shaft 11. Therefore, the magnetic attraction force on the end face of the first annular shaft 11 can be evenly distributed on the several first convex rings 13.

[0043] Similarly, a second annular groove 22 is formed on the inner sidewall of the second annular shaft 21, and at least two second convex rings 23 are formed with the second annular groove 22 as the boundary line. The formation of the second annular groove 22 weakens the magnetism at the location of the second annular groove 22 on the second annular shaft 21. Therefore, the magnetic attraction force on the end face of the second annular shaft 21 can be evenly distributed on the several second convex rings 23.

[0044] Furthermore, there is a gap between the first convex ring 13 and the second convex ring 23, and the first annular groove 12 and the second annular groove 22 are arranged in a one-to-one correspondence, as are the first convex ring 13 and the second convex ring 23. Based on the above structural design, when the first annular shaft 11 and the second annular shaft 21 are displaced relative to each other in the axial direction, a tactile magnetic damping feedback can be generated. This provides the user's finger with a tactile magnetic damping effect.

[0045] Furthermore, such as Figure 5 and Figure 6As shown, the number of first annular grooves 12 is the same as the number of second annular grooves 22, the width of the first convex ring 13 is the same as the width of the second convex ring 23, and the thickness of the first annular shaft 11 is the same as the thickness of the second annular shaft 21. In some other embodiments, the number of first convex rings 13 is less than the number of second convex rings 23. This increases the travel of the keycap 2 and also ensures the effectiveness of the magnetic damping feedback.

[0046] Understandably, in order to make the segmented feedback during the rotation of the ring magnetic switch clearer, the number of the first annular grooves 12 should be the same as the number of the second annular grooves 22, the size of the first convex ring 13 should be the same as the size of the second convex ring 23, and the shape of the first convex ring 13 should be the same as the shape of the second convex ring 23.

[0047] Furthermore, such as Figure 5 and Figure 6 As shown, both the first annular groove 12 and the second annular groove 22 are U-shaped grooves.

[0048] In some other embodiments, both the first annular groove 12 and the second annular groove 22 are V-shaped grooves. The arrangement of the U-shaped and V-shaped grooves allows the magnetic convex rings (first convex ring 13 and second convex ring 23) to have a structure that is wider at the bottom and narrower at the top. This structural design allows the magnetic attraction force on the magnetic end faces of the first annular shaft 11 and the second annular shaft 21 to be concentrated at the top of the first convex ring 13 and the second convex ring 23 along the slopes of the U-shaped and V-shaped grooves. This makes the segmental feedback between the first annular shaft 11 and the second annular shaft 21 more distinct and improves the magnetic damping effect between them.

[0049] Furthermore, the mounting base 1 is detachably connected to the first annular shaft 11, and the button cap 2 is detachably connected to the second annular shaft 21.

[0050] Furthermore, such as Figure 2 and Figure 3 As shown, the mounting base 1 is provided with a number of first limiting grooves 14, and the keycap 2 is provided with limiting pins 24 at the corresponding positions of the limiting grooves. Both the limiting grooves and the limiting pins 24 extend along the axial direction of the first annular shaft 11, and the number of limiting grooves are evenly arranged at the edge of the mounting base 1.

[0051] Furthermore, such as Figure 2 and Figure 3 As shown, a second limiting groove 25 is provided on the side wall of the keycap 2. The second limiting groove 25 extends along the axial direction of the first annular shaft 11. A limiting protrusion 15 is provided on the mounting base 1 at the position corresponding to the second limiting groove 25. The limiting protrusion 15 passes through the second limiting groove 25 and is used to limit the movement of the keycap 2.

[0052] This application also provides a method for generating magnetic damping based on the above-mentioned ring magnetic switch, the method comprising the following steps: Step 1: When the button cap 2 is pressed by the user, the button cap 2 drives the second annular shaft 21 to descend, and the distance between the button cap 2 and the mounting base 1 becomes smaller. The mounting base 1 is provided with a first annular shaft 11, and at least two first protruding rings 13 and at least two second protruding rings 23 are respectively provided on the opposite surfaces between the first annular shaft 11 and the second annular shaft 21. Step 2: The second annular shaft 21 descends to cause the second convex ring 23 and the first convex ring 13 to shift, wherein the first convex ring 13 and the second convex ring 23 correspond one-to-one under the action of magnetic attraction, and the first convex ring 13 and the second convex ring 23 attract each other. Step 3: By changing the magnetic attraction between the first convex ring 13 and the second convex ring 23, magnetic damping is generated between the first convex ring 13 and the second convex ring 23.

[0053] In summary, this application provides a ring-shaped magnetic switch and a method for generating magnetic damping. In this invention, when the button cap 2 is pressed, a positional shift occurs between the second annular shaft 21 on the button cap 2 and the first annular shaft 11 on the mounting base 1. This causes a change in the damping value of the attraction between the first annular shaft 11 and the second annular shaft 21, generating magnetic damping tactile feedback, effectively improving the button's damping effect. Furthermore, at least two first convex rings 13 and at least two second convex rings 23 are respectively provided on the opposing surfaces between the first annular shaft 11 and the second annular shaft 21, which can give the button cap 2 a tactile damping effect when pressed. This solution can be applied to fields such as mice, keyboards, and automotive dashboards.

[0054] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A ring type magnetic switch, characterized by comprising: include: Mounting base, wherein a first annular shaft is provided on the mounting base; The keycap is movably connected to the mounting base. A second annular shaft is provided on the keycap at a position corresponding to the first annular shaft. The second annular shaft passes through the inner hole of the first annular shaft. The second annular shaft is coaxial with the first annular shaft, and there is a gap between the first annular shaft and the second annular shaft. In this design, at least one of the first and second annular shafts is a magnetic shaft, and there is an attractive magnetic force between the first and second annular shafts to give the button cap magnetic levitation. At least one first annular groove is formed on the inner wall of the first annular shaft, surrounding the inner hole of the first annular shaft to form at least two first convex rings on the inner wall of the first annular shaft. At least one second annular groove is formed on the outer wall of the second annular shaft, surrounding the second annular shaft to form at least two second convex rings on the outer wall of the second annular shaft. A magnetic coil is provided on the outer wall of at least one of the first and second annular shafts, used to adjust the magnetic strength of the first or second annular shaft. The magnetic coil is wound around the outer wall of the first or second annular shaft. There is a gap between the first and second convex rings. The first and second annular grooves and the first and second convex rings are arranged in a one-to-one correspondence, and the first and second convex rings are arranged in a one-to-one correspondence to give the button cap a tactile feedback when pressed.

2. A magnetic ring switch according to claim 1, wherein The number of the first annular grooves is the same as the number of the second annular grooves, the width of the first convex ring is the same as the width of the second convex ring, and the thickness of the first annular shaft is the same as the thickness of the second annular shaft.

3. A ring-shaped magnetic switch according to claim 1, characterized in that, The mounting base is detachably connected to the first annular shaft, and the button cap is detachably connected to the second annular shaft.

4. A ring-shaped magnetic switch according to claim 1, characterized in that, The mounting base is provided with a plurality of first limiting grooves, and the button cap is provided with a limiting pin corresponding to the position of the limiting groove. Both the limiting groove and the limiting pin extend along the axial direction of the first annular shaft, and the plurality of limiting grooves are evenly arranged at the edge position of the mounting base.

5. A ring-shaped magnetic switch according to claim 1, characterized in that, A second limiting groove is provided on the side wall of the button cap, and the second limiting groove extends along the axial direction of the first annular shaft. A limiting protrusion is provided on the mounting base at the position corresponding to the second limiting groove. The limiting protrusion passes through the second limiting groove and is used to limit the movement stroke of the button cap.

6. A method for generating magnetic damping based on the ring-shaped magnetic switch according to any one of claims 1-5, characterized in that, The magnetic damping generation method includes the following steps: When the button cap is pressed by the user, the button cap drives the second annular shaft to descend, and the distance between the button cap and the mounting base becomes smaller. The mounting base is provided with a first annular shaft, and at least two first protruding rings and at least two second protruding rings are respectively provided on the opposite surfaces between the first annular shaft and the second annular shaft. The second annular shaft descends, causing an offset between the second convex ring and the first convex ring, wherein the first convex ring and the second convex ring correspond one-to-one under the action of magnetic attraction, and the first convex ring and the second convex ring attract each other. The magnetic attraction between the first convex ring and the second convex ring is changed, thereby generating magnetic damping between the first convex ring and the second convex ring.

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