Coupling knob switch

Abstract

The application discloses a structure-optimized coupling type rotary knob switch, which comprises a first shell, a second shell, a rotary knob ring, a controller and a plurality of Hall sensors. The first shell and the second shell are detachably connected, and a clamping space is formed between the first shell and the second shell. The rotary knob ring is at least partially structured to extend into the clamping space, so that the rotary knob ring is rotationally connected with the first shell and the second shell. The controller is arranged between the first shell and the second shell. The controller is circumferentially spaced apart from the plurality of Hall sensors, and the inner side of the rotary knob ring is provided with a magnet. By detecting the clockwise or counterclockwise rotation of the magnet, the scheme can realize the switching of multiple functions. For example, the clockwise rotation can increase the massage voltage or switch to the next mode, and the counterclockwise rotation can reduce the massage voltage or switch to the previous mode. The user can touch the position of the rotary knob ring and operate through the rotating action without visual confirmation.

Description

Technical Field

[0001] This application relates to the field of control switches, and more particularly to a coupled rotary switch. Background Technology

[0002] With the rapid development of wearable devices, their application scenarios are becoming increasingly diverse, including massage belts, smartwatches, smart bracelets, and health monitoring devices. These devices typically require users to operate them via switches to change modes and functions.

[0003] In existing technologies, wearable devices typically use button switches for control functions. Button switches usually require the user to visually confirm their location before operation. When the button is located in a position difficult for the human eye to see, such as when used on an abdominal massage belt, the user cannot see the button switch directly, making blind operation impossible. This requires the user to be distracted during operation, reducing the device's convenience and practicality. Utility Model Content

[0004] The purpose of this application is to provide a coupling rotary switch that allows for convenient, visual-free operation by the user.

[0005] This application provides a coupled rotary switch, including:

[0006] First shell;

[0007] The second housing is detachably connected to the first housing and the second housing, and a clamping space is formed between the first housing and the second housing;

[0008] A knob ring, at least a portion of which extends into the clamping space, so that the knob ring is rotatably connected to the first housing and the second housing;

[0009] A controller is disposed between the first housing and the second housing;

[0010] The controller is equipped with multiple Hall sensors spaced circumferentially, and a magnet is provided on the inner side of the knob ring.

[0011] Optionally, the portion of the knob ring extending into the clamping space forms a first rotating groove facing the first housing, and a plurality of first rotating steel balls are provided between the first rotating groove and the first housing to facilitate rotation between the knob ring and the first housing.

[0012] Optionally, the first housing is provided with a plurality of first rolling grooves at intervals at the position corresponding to the first rotating groove, and the plurality of first rolling grooves are fitted and assembled with the plurality of first rotating steel balls one by one.

[0013] Optionally, the portion of the knob ring extending into the clamping space forms a second rotating groove facing the second housing, and a plurality of second rotating steel balls are provided between the second rotating groove and the second housing to facilitate rotation between the knob ring and the second housing.

[0014] Optionally, the second housing is provided with a plurality of second rolling grooves at intervals at the position corresponding to the second rotating groove, and the plurality of second rolling grooves are fitted and assembled with the plurality of second rotating steel balls one by one.

[0015] Optionally, the first housing has a protrusion on the side facing the second housing to form an assembly ring, the assembly ring being inserted into the knob ring, and the second housing being connected to the assembly ring.

[0016] Optionally, the outer circumferential surface of the assembly ring is provided with a plurality of limiting grooves at intervals, and the inner side of the knob ring is provided with a first telescopic pin. One end of the first telescopic pin is inserted into the assembly ring, and the other end of the first telescopic pin extends out of the knob ring and cooperates with the plurality of limiting grooves to lock the relative position of the knob ring and the assembly ring.

[0017] Optionally, a second telescopic pin is further provided inside the knob ring, the second telescopic pin being disposed opposite to the first telescopic pin to balance the force on the assembly ring; and / or,

[0018] The straight-line distance between the outer surface of the assembly ring and the inner surface of the knob ring is less than the radius of the spherical body in the first telescopic pin; and / or

[0019] Each of the plurality of Hall sensors is disposed between two adjacent limiting slots.

[0020] Optionally, the coupled rotary switch further includes: a first magnetic connector and a second magnetic connector, both of which are connected to the controller. Part of the structure of the first magnetic connector and the second magnetic connector protrudes from the surface of the first housing, and the first magnetic connector and the second magnetic connector are conductive.

[0021] Optionally, the first magnetic connector and the second magnetic connector are offset from the magnet, and the height of the first magnetic connector and the second magnetic connector from the surface of the controller is greater than the height of the Hall sensor from the surface of the controller.

[0022] The beneficial effects of this application embodiment are as follows: By arranging multiple Hall sensors at circumferential intervals on the controller and placing a magnet inside the knob ring, the magnet rotates synchronously with the knob ring when it rotates. The Hall sensors can accurately detect the magnet and collect the magnet's movement path based on the detection results of Hall sensors at adjacent positions, thereby determining whether the knob ring rotates clockwise or counterclockwise. By detecting the clockwise or counterclockwise rotation of the magnet, this solution can achieve switching between multiple functions. For example, clockwise rotation can increase the massage voltage or switch to the next mode, while counterclockwise rotation can decrease the massage voltage or switch to the previous mode. Users can perceive the position of the knob ring by touch and operate it by rotating it, without visual confirmation. Furthermore, the detachable connection design of the first and second housings, and the integration of the controller and Hall sensors within the clamping space, make the entire knob switch structure compact, facilitating installation and maintenance. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of a coupled rotary switch structure according to a specific embodiment of this application;

[0025] Figure 2 This is a cross-sectional schematic diagram of a coupled rotary switch according to a specific embodiment of this application;

[0026] Figure 3 This is an exploded view of the first part of a coupled rotary switch according to a specific embodiment of this application;

[0027] Figure 4 This is an exploded view of the second part of a coupled rotary switch according to a specific embodiment of this application;

[0028] Figure 5 This is an exploded view of the third part of a coupled rotary switch according to a specific embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the first housing structure according to a specific embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the second housing structure according to a specific embodiment of this application.

[0031] Figure Descriptions: 1. First housing; 11. First rotating steel ball; 12. First rolling groove; 13. Assembly ring; 14. Limiting groove; 2. Second housing; 21. Second rotating steel ball; 22. Second rolling groove; 3. Knob ring; 31. Magnet; 32. First rotating groove; 33. Second rotating groove; 34. First telescopic pin; 35. Second telescopic pin; 4. Controller; 41. Hall sensor; 42. PCB circuit board; 5. Clamping space; 6. First magnetic connector; 7. Second magnetic connector. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0034] like Figures 1-3 As shown, a coupled rotary switch includes: a first housing 1; a second housing 2, the first housing 1 and the second housing 2 being detachably connected, and a clamping space 5 being formed between the first housing 1 and the second housing 2; a rotary ring 3, at least a portion of the rotary ring 3 extending into the clamping space 5, so that the rotary ring 3 is rotatably connected to the first housing 1 and the second housing 2; a controller 4, the controller 4 being disposed between the first housing 1 and the second housing 2; the controller 4 having a plurality of Hall sensors 41 spaced apart circumferentially, and a magnet 31 disposed on the inner side of the rotary ring 3.

[0035] In this embodiment, the first housing 1 is constructed as a circular structure. However, the structure of the first housing 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the shape of the first housing 1 can be (but is not limited to): triangular, square, elliptical, heart-shaped, etc.

[0036] The first housing 1 is made of plastic material. However, the material of the first housing 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the material of the first housing 1 includes (but is not limited to): paper material, fiber material, non-magnetic metal or non-magnetic alloy.

[0037] The first housing 1 and the second housing 2 are connected by screws. However, the connection method of the first housing 1 and the second housing 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the first housing 1 and the second housing 2 are connected by one or more of the following methods: screw connection, snap-fit, plug-in connection, press-fit connection.

[0038] The second housing 2 is constructed in a circular shape. However, the structure of the second housing 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the shape of the second housing 2 can be (but is not limited to): triangular, square, elliptical, heart-shaped, etc.

[0039] The second housing 2 is made of plastic material. However, the material of the second housing 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the material of the second housing 2 includes (but is not limited to): paper material, fiber material, non-magnetic metal or non-magnetic alloy.

[0040] The clamping space 5 is a groove that surrounds the first housing 1 and the second housing 2 around the non-connected position.

[0041] A portion of the knob ring 3 is inserted into the clamping space 5. The clamping space 5 prevents the knob ring 3 from falling off between the first housing 1 and the second housing 2. The knob ring 3 can contact the surfaces of the first housing 1 and the second housing 2, or there can be gaps between them. The knob ring 3 can rotate around the connection point of the first housing 1 and the second housing 2.

[0042] In some embodiments, the knob ring 3 can be inserted entirely into the clamping space 5, so that the outer surface of the knob ring 3 is flush with the periphery of the first housing 1 and the second housing 2, or the outer surface of the knob ring 3 is recessed into the clamping space 5.

[0043] The knob ring 3 is made of a non-magnetic metal or a non-magnetic alloy. However, the material of the knob ring 3 is not limited to this. Depending on the specific application scenario, in some embodiments, the material of the knob ring 3 can be (but is not limited to): paper, fiber, or plastic.

[0044] In this embodiment, controller 4 refers to circuit controller 4 made of PCB circuit board 42, including: PCB circuit board 42, control chip, resistor, capacitor, LED beads and other electronic components.

[0045] The controller 4 is connected to the first housing 1. However, the connection method of the controller 4 is not limited to this. Depending on the specific application scenario, in some embodiments, the controller 4 can be connected to the second housing 2.

[0046] The controller 4 circumferential direction refers to the circumferential direction of the PCB circuit board 42. In this embodiment, the number of Hall sensors 41 is 8. However, the number of Hall sensors 41 is not limited to this. Depending on the specific application scenario, in some implementations, the number of Hall sensors 41 can be (not limited to): 2, 3, 4, 5, 6, 7, 9, 10 or more.

[0047] In this embodiment, the magnet 31 is a permanent magnet 31. In some embodiments, the magnet 31 can be a magnetized metal.

[0048] A mounting groove is formed on the inner surface of the knob ring 3, and the magnet 31 is disposed in the mounting groove. The magnet 31 is interference-fitted with the mounting groove. In some embodiments, the magnet 31 is fixed in the mounting groove by adhesive.

[0049] In the above embodiment, multiple Hall sensors 41 are arranged circumferentially around the controller 4, and a magnet 31 is arranged inside the knob ring 3. When the knob ring 3 rotates, the magnet 31 rotates synchronously with the knob ring 3. The Hall sensors 41 can accurately detect the magnet 31 and collect the movement path of the magnet 31 based on the detection results of the Hall sensors 41 at adjacent positions, thereby determining whether the knob ring 3 rotates clockwise or counterclockwise. By detecting the clockwise or counterclockwise rotation of the magnet 31, this solution can achieve switching of multiple functions. For example, clockwise rotation can increase the massage voltage or switch to the next mode, while counterclockwise rotation can decrease the massage voltage or switch to the previous mode. Users can perceive the position of the knob ring 3 by touch and operate it by rotating it, without visual confirmation. At the same time, the detachable connection design of the first housing 1 and the second housing 2, as well as the design of integrating the controller 4 and the Hall sensors 41 into the clamping space 5, make the entire knob switch structure compact, easy to install and maintain.

[0050] In some embodiments, the portion of the knob ring 3 extending into the clamping space 5 faces the first housing 1 to form a first rotating groove 32. A plurality of first rotating steel balls 11 are provided between the first rotating groove 32 and the first housing 1 to facilitate rotation between the knob ring 3 and the first housing 1.

[0051] In this embodiment, the first rotating steel ball 11 is a sphere. However, the structure of the first rotating steel ball 11 is not limited to this. Depending on the specific application scenario, in some embodiments, the first rotating steel ball 11 is cylindrical.

[0052] The number of the first rotating steel balls 11 can be 2, 3, 4, 5, 6, 7, 8 or more.

[0053] Multiple rotating steel balls 11 are disposed between the first rotating groove 32 and the first housing 1, converting the sliding friction between the first housing 1 and the knob ring 3 into rolling friction. The resistance of rolling friction is much less than that of sliding friction, making the rotation of the knob ring 3 smoother, improving the operating feel, and providing a more fluid experience for the user when rotating the knob. The first rotating steel balls 11 roll within the first rotating groove 32, more precisely guiding the rotation path of the knob ring 3, reducing wobbling and offset during rotation, allowing the Hall sensor 41 to more accurately detect the rotation path of the magnet 31, thereby achieving more precise function switching and control.

[0054] In some embodiments, a plurality of first rolling grooves 12 are provided at intervals at the position of the first housing 1 corresponding to the position of the first rotating groove 32, and the plurality of first rolling grooves 12 are fitted and assembled with a plurality of first rotating steel balls 11 one by one.

[0055] The cooperation between the first rolling groove 12 and the first rotating steel ball 11 makes the rotation of the knob ring 3 smoother, providing a more fluid feel for the user and making the knob switch more comfortable to use. The assembly of the first rolling groove 12 and the first rotating steel ball 11 provides a precise rolling track for the steel ball, reducing wobbling and deviation during rolling, resulting in more stable rotation of the knob ring 3 and reducing rotational deviations caused by external forces or improper operation.

[0056] In some embodiments, the portion of the knob ring 3 extending into the clamping space 5 faces the second housing 2 to form a second rotating groove 33. A plurality of second rotating steel balls 21 are provided between the second rotating groove 33 and the second housing 2 to facilitate rotation between the knob ring 3 and the second housing 2.

[0057] In this embodiment, the second rotating steel ball 21 is a sphere. However, the structure of the second rotating steel ball 21 is not limited to this. Depending on the specific application scenario, in some embodiments, the second rotating steel ball 21 is cylindrical.

[0058] The number of the second rotating steel balls 21 can be 2, 3, 4, 5, 6, 7, 8 or more.

[0059] Multiple second rotating steel balls 21 are arranged between the second rotating groove 33 and the second housing 2, converting the sliding friction between the second housing 2 and the knob ring 3 into rolling friction. The resistance of rolling friction is much less than that of sliding friction, making the rotation of the knob ring 3 smoother, improving the operating feel, and providing a more fluid experience for the user when rotating the knob. The second rotating steel balls 21 roll within the second rotating groove 33, more precisely guiding the rotation path of the knob ring 3, reducing wobbling and offset during rotation, allowing the Hall sensor 41 to more accurately detect the rotation path of the magnet 31, thereby achieving more precise function switching and control. The rotating steel balls between the first housing 1, the second housing 2, and the knob ring 3 significantly increase the smoothness of the knob ring 3's rotation.

[0060] In some embodiments, the second housing 2 is provided with a plurality of second rolling grooves 22 at intervals at the position corresponding to the second rotating groove 33, and the plurality of second rolling grooves 22 are fitted and assembled with a plurality of second rotating steel balls 21 one by one.

[0061] The cooperation between the second rolling groove 22 and the second rotating steel ball 21 makes the rotation of the knob ring 3 smoother, providing users with a smoother feel during operation and making the knob switch more comfortable to use. The assembly of the second rolling groove 22 and the second rotating steel ball 21 provides a precise rolling track for the steel ball, reducing wobbling and deviation during rolling, resulting in more stable rotation of the knob ring 3 and reducing rotational deviations caused by external forces or improper operation.

[0062] In some embodiments, the side of the first housing 1 facing the second housing 2 protrudes to form an assembly ring 13, which is inserted into the knob ring 3, and the second housing 2 is connected to the assembly ring 13.

[0063] The assembly ring 13 is inserted into the knob ring 3, providing a stable center of rotation for the knob ring 3. This effectively prevents radial displacement of the knob ring 3 during rotation, thus avoiding instability in the knob ring 3's rotation or inaccurate detection by the Hall sensor 41. Users experience a smoother feel during operation, and the Hall sensor 41 more accurately detects changes in the path of the magnet 31, improving the control accuracy of the rotary switch. The tight fit between the assembly ring 13 and the knob ring 3, and the connection between the second housing 2 and the assembly ring 13, form a stable structural system. The assembly ring 13 not only provides a center of rotation but also strengthens the connection between the knob ring 3 and the first housing 1. This reduces loosening or damage caused by external impacts or long-term use, extending the lifespan of the equipment.

[0064] In some embodiments, the assembly ring 13 is disposed on the second housing 2, or the assembly ring 13 is disposed on both the first housing 1 and the second housing 2.

[0065] In some embodiments, a plurality of limiting grooves 14 are provided at intervals on the outer peripheral surface of the assembly ring 13, and a first telescopic pin 34 is provided on the inner side of the knob ring 3. One end of the first telescopic pin 34 is inserted into the assembly ring 13, and the other end of the first telescopic pin 34 extends out of the knob ring 3 and cooperates with the plurality of limiting grooves 14 to lock the relative position of the knob ring 3 and the assembly ring 13.

[0066] In this embodiment, the first telescopic pin 34 includes a housing, a spring, and a spherical body connected to one end of the spring. Both the spring and the spherical body are assembled inside the housing. A portion of the spherical body extends out of the housing under the action of the spring and retracts into the housing after being subjected to an external force exceeding a certain value.

[0067] The limiting grooves 14 are evenly spaced on the outer surface of the assembly ring 13. The number of limiting grooves 14 can be 2, 3, 4, 5, 6, 7, 8 or more.

[0068] The engagement of the limiting groove 14 and the first telescopic pin 34 allows the knob ring 3 to be precisely locked in a specific position during rotation. When the knob ring 3 rotates to a certain position, the first telescopic pin 34 inserts into the corresponding limiting groove 14, thereby limiting further rotation of the knob ring 3. This design can precisely control the rotation angle of the knob ring 3, ensuring that the knob ring 3 can stably stop at each set position, improving the accuracy and reliability of operation. The engagement of the telescopic pin and the limiting groove 14 produces obvious tactile feedback when the knob ring 3 rotates. When the knob ring 3 rotates to the position of the limiting groove 14, the user will feel a distinct click. This enhances the user's feedback experience during operation, allowing the user to more intuitively feel the rotation status of the knob ring 3, improving the accuracy and confidence of operation. The engagement of the limiting groove 14 and the first telescopic pin 34 gives the knob ring 3 a strong sense of stopping at a specific position, reducing the possibility of over-rotation or under-rotation due to misoperation.

[0069] In some embodiments, a second telescopic pin 35 is also provided inside the knob ring 3, which is disposed opposite to the first telescopic pin 34 so that the assembly ring 13 is subjected to force balance.

[0070] The first telescopic pin 34 and the second telescopic pin 35 have the same structure. The first telescopic pin 34 and the second telescopic pin 35 are arranged opposite each other, ensuring that the force on the assembly ring 13 is evenly distributed during rotation of the knob ring 3, preventing excessive wear of the assembly ring 13 or the telescopic pins due to unilateral force. The oppositely arranged telescopic pins provide more even support to the knob ring 3, reducing wobbling and offset during rotation, resulting in a smoother feel for the user and improving the user experience.

[0071] The straight-line distance between the outer surface of the assembly ring 13 and the inner surface of the knob ring 3 is less than the radius of the spherical body in the first telescopic pin 34, allowing the spherical body to fit tightly against the outer surface of the assembly ring 13 during telescopic movement, thus forming a stable locking state in the limiting groove 14. This ensures that the first telescopic pin 34 can be firmly locked in the limiting groove 14, preventing accidental rotation or loosening of the knob ring 3 when not in operation, and improving the stability and reliability of the knob switch.

[0072] In some embodiments, each of the plurality of Hall sensors 41 is disposed between two adjacent limiting slots 14.

[0073] By placing the Hall sensor 41 between two adjacent limiting slots 14, each time the knob ring 3 rotates and produces a jerky sensation, it will inevitably pass through a Hall sensor 41. This ensures that every rotation action is accurately recorded, reducing misoperation or functional abnormalities caused by inaccurate rotation angles.

[0074] In some embodiments, the coupled rotary switch further includes: a first magnetic connector 6 and a second magnetic connector 7, both of which are connected to the controller 4. Parts of the structure of the first magnetic connector 6 and the second magnetic connector 7 protrude from the surface of the first housing 1, and the first magnetic connector 6 and the second magnetic connector 7 are conductive.

[0075] Both the first magnetic connector 6 and the second magnetic connector 7 are made of magnetic metal material.

[0076] The first magnetic connector 6 and the second magnetic connector 7 not only achieve a stable connection between the rotary switch and external devices through magnetic force, but also have electrical conductivity, enabling simultaneous electrical connection. This reduces the need for additional wires or connectors, simplifying device assembly and maintenance. The use of magnetic connectors makes connecting the rotary switch to external devices simpler and faster. Users only need to bring the rotary switch close to the external device, and the magnetic force will automatically complete the connection.

[0077] In some embodiments, the first magnetic connector 6 and the second magnetic connector 7 are misaligned with the magnet 31, and the height of the first magnetic connector 6 and the second magnetic connector 7 from the surface of the controller 4 is greater than the height of the Hall sensor 41 from the surface of the controller 4.

[0078] The first magnetic connector 6 and the second magnetic connector 7 are offset from the magnet 31, and their height from the surface of the controller 4 is greater than the height of the Hall sensor 41 from the surface of the controller 4. This ensures that the magnetic field generated by the magnetic connectors does not directly interfere with the detection area of ​​the Hall sensor 41. This significantly reduces the interference of the magnetic connectors on the detection results of the Hall sensor 41, ensuring that the Hall sensor 41 can accurately detect the position of the knob ring 3, thus improving the accuracy and reliability of the detection. At the same time, the offset setting and height difference design reduce the need for additional shielding measures and simplify the internal structure of the device.

[0079] It should be noted that any of the embodiments in this example can be implemented independently or in combination with one or more other embodiments. When implementing in combination, the combination method should not be limited to the combination methods listed in this example.

[0080] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A coupling rotary switch, characterized in that, include: First shell; The second housing is detachably connected to the first housing and the second housing, and a clamping space is formed between the first housing and the second housing; A knob ring, at least a portion of which extends into the clamping space, so that the knob ring is rotatably connected to the first housing and the second housing; A controller is disposed between the first housing and the second housing; The controller is equipped with multiple Hall sensors spaced circumferentially, and a magnet is provided on the inner side of the knob ring.

2. The coupled rotary switch according to claim 1, characterized in that, The portion of the knob ring extending into the clamping space faces the first housing to form a first rotating groove. A plurality of first rotating steel balls are provided between the first rotating groove and the first housing to facilitate rotation between the knob ring and the first housing.

3. The coupled rotary switch according to claim 2, characterized in that, The first housing has a plurality of first rolling grooves spaced apart at the position corresponding to the first rotating groove, and the plurality of first rolling grooves are assembled with the plurality of first rotating steel balls one by one.

4. The coupled rotary switch according to claim 1, characterized in that, The portion of the knob ring extending into the clamping space faces the second housing to form a second rotating groove. A plurality of second rotating steel balls are provided between the second rotating groove and the second housing to facilitate rotation between the knob ring and the second housing.

5. The coupled rotary switch according to claim 4, characterized in that, The second housing is provided with a plurality of second rolling grooves at intervals at the positions corresponding to the second rotating groove, and the plurality of second rolling grooves are assembled with the plurality of second rotating steel balls one by one.

6. The coupled rotary switch according to claim 1, characterized in that, The first housing has a protrusion on the side facing the second housing to form an assembly ring, which is inserted into the knob ring, and the second housing is connected to the assembly ring.

7. The coupled rotary switch according to claim 6, characterized in that, The outer circumferential surface of the assembly ring is provided with a plurality of limiting grooves at intervals. The inner side of the knob ring is provided with a first telescopic pin. One end of the first telescopic pin is inserted into the assembly ring, and the other end of the first telescopic pin extends out of the knob ring and cooperates with the plurality of limiting grooves to lock the relative position of the knob ring and the assembly ring.

8. The coupled rotary switch according to claim 7, characterized in that, The knob ring also contains a second telescopic pin, which is positioned opposite to the first telescopic pin to balance the forces acting on the assembly ring; and / or The straight-line distance between the outer surface of the assembly ring and the inner surface of the knob ring is less than the radius of the spherical body in the first telescopic pin; and / or Each of the plurality of Hall sensors is disposed between two adjacent limiting slots.

9. The coupled rotary switch according to claim 1, characterized in that, The coupled rotary switch further includes: a first magnetic connector and a second magnetic connector, both of which are connected to the controller. Parts of the structure of the first magnetic connector and the second magnetic connector protrude from the surface of the first housing. The first magnetic connector and the second magnetic connector are conductive.

10. The coupled rotary switch according to claim 9, characterized in that, The first magnetic connector and the second magnetic connector are offset from the magnet, and the height of the first magnetic connector and the second magnetic connector from the surface of the controller is greater than the height of the Hall sensor from the surface of the controller.

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