Knob Assemblies and Electronic Devices

Abstract

The present invention relates to a knob assembly and an electronic device. The knob assembly includes a knob potentiometer, a base body covered on a rotating part of the knob potentiometer, the rotating part has an installation cavity and a first limiting groove, and the base body has a second limiting groove; the knob assembly also includes: a first magnetic member and a second magnetic member arranged in the installation cavity; the first magnetic member and the second magnetic member attract each other, so that the first end of the second magnetic member is limited in the first limiting groove, and the second end of the second magnetic member is limited in the second limiting groove, so that the base body is brought to rotate with the rotating part while rotating. The knob assembly can not only realize the synchronous rotation of the base body and the rotating part of the knob potentiometer to meet the use requirements of the rotating assembly, but also prevent the base body from falling off from the knob potentiometer, and there is no need to connect the base body to the knob potentiometer by means of a snap connection, which can prevent the base body from falling off due to aging of the snap, thereby ensuring the personal safety of the user.

Description

Technical Field

[0001] The invention relates to the technical field of electrical appliances, and in particular to a knob assembly and an electronic device. Background Art

[0002] At present, wall-mounted boilers on the market are usually equipped with snap-on knobs, that is, the base of the knob is mounted on the knob potentiometer with a snap-on cover, so that users can perform corresponding control operations. However, the existing snap-on knobs are generally plastic injection molded products. After the knobs are used for a long time, the snaps are prone to aging, which causes the knob base to fall off, exposing the circuit board electrically connected to the knob potentiometer, and making it easy for users to touch the circuit board. Once there is high voltage or high current in the internal circuit of the circuit board, it is easy to cause injuries to the user. Summary of the invention

[0003] Based on this, it is necessary to provide a knob assembly and an electronic device to address the problem that the knob base of the snap-on knob falls off due to aging.

[0004] A knob assembly comprises a knob potentiometer and a base body covered on a rotating part of the knob potentiometer, wherein the rotating part has a mounting cavity and a first limiting groove, and the base body has a second limiting groove;

[0005] The knob assembly further includes: a first magnetic member and a second magnetic member disposed in the mounting cavity;

[0006] The first magnetic member and the second magnetic member attract each other so that the first end of the second magnetic member is limited in the first limiting groove, and the second end of the second magnetic member is limited in the second limiting groove, so that the base is driven to rotate with the rotating part while rotating, wherein the first end and the second end of the second magnetic member are relatively distributed.

[0007] In one embodiment, the number of the first magnetic members is set to 1, the number of the second magnetic members is set to plural, and the plural second magnetic members are spaced apart and distributed along the circumference of the substrate;

[0008] The number of the first limiting grooves is set to be multiple, and the multiple first limiting grooves are distributed at intervals along the circumference of the rotating part;

[0009] The number of the second limiting grooves is set to be multiple, and the multiple second limiting grooves are distributed at intervals along the circumference of the base body, and each of the second limiting grooves corresponds to each of the first limiting grooves one by one.

[0010] In one embodiment, the base body has a receiving groove;

[0011] The knob assembly further includes: an elastic member and an unlocking member;

[0012] The elastic member is used to support the first magnetic member in the installation cavity, and when the first magnetic member and the second magnetic member attract each other, the elastic member is in a non-limit compression state;

[0013] The first end of the unlocking member is located in the accommodating groove, and the second end of the unlocking member extends into the installation cavity and is used to press the first magnetic member until the first magnetic member and the second magnetic member are no longer attracted to each other, wherein the first end and the second end of the unlocking member are relatively distributed.

[0014] In one embodiment, the elastic member is a spring.

[0015] In one embodiment, the outer diameter of the first end of the unlocking member is larger than the outer diameter of the second end, and the outer diameter of the first end of the unlocking member is also larger than the diameter of the bottom opening of the accommodating groove.

[0016] In one of the embodiments, the knob assembly further includes: a detachable panel, wherein the panel cover is mounted on the base to seal the receiving groove.

[0017] In one of the embodiments, when the first magnetic member and the second magnetic member attract each other, the first end of the unlocking member abuts against the panel.

[0018] In one embodiment, the second limiting groove is configured as a through groove structure;

[0019] When the first magnetic member and the second magnetic member are no longer attracted to each other, the second magnetic member can slide downward along the first limiting groove and the second limiting groove by its own gravity.

[0020] In one embodiment, the first limiting groove and the second limiting groove are both configured as a downwardly inclined straight groove structure.

[0021] In one embodiment, the diameter of the first end of the second limiting groove is smaller than the diameter of the second end, wherein the first end and the second end of the second limiting groove are relatively distributed, and the first end of the second limiting groove is distributed close to the corresponding first limiting groove;

[0022] The outer diameter of the second magnetic member is matched with the inner diameter of the first end of the second limiting groove, and a guide protrusion is arranged on the outer wall of the second magnetic member.

[0023] In one of the embodiments, a detachable blocking member is provided at an opening of the second limiting groove away from the rotating portion.

[0024] In one embodiment, the blocking member is a blocking ring.

[0025] An electronic device comprises the knob assembly described in any one of the above items.

[0026] In the above-mentioned knob assembly and electronic device, when the first magnetic member and the second magnetic member of the knob assembly attract each other, the two ends of the second magnetic member can be firmly limited in the first limiting groove and the second limiting groove to realize the fixed connection between the base and the rotating part of the knob potentiometer, so that in the process of rotating the base, the rotating part of the knob potentiometer can also be driven to rotate by the base. It can be seen that the rotating assembly and electronic device described above can not only realize the synchronous rotation of the base and the rotating part of the knob potentiometer to meet the use requirements of the rotating assembly, but also prevent the base from falling off from the knob potentiometer. There is no need to connect the base to the knob potentiometer by snap-on connection, which can prevent the base from falling off due to aging of the snap, thereby ensuring the personal safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a knob assembly provided in one embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a knob assembly without a second magnetic member provided by an embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a second magnetic member provided in one embodiment of the present invention.

[0030] in:

[0031] 110-knob potentiometer;

[0032] 111- rotating part;

[0033] 111a-installation cavity;

[0034] 111b-first limiting groove;

[0035] 112-installation part;

[0036] 120-matrix;

[0037] 120a-second limiting groove;

[0038] 120b-accommodating groove;

[0039] 130-first magnetic member;

[0040] 140- second magnetic member;

[0041] 141- guide protrusion;

[0042] 150-elastic member;

[0043] 160-unlocking piece;

[0044] 170-Panel;

[0045] 180-blocking member;

[0046] 200-Circuit Board. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention 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 invention. However, the present invention 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 invention, so the present invention is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0052] It should be noted that when 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. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0053] like Figure 1 As shown, an embodiment of the present invention provides a knob assembly, which includes a knob potentiometer 110 and a base 120 covered on a rotating portion 111 of the knob potentiometer 110. Figure 2 As shown, the rotating portion 111 is provided with a mounting cavity 111a and a first limiting groove 111b, and the base 120 is provided with a second limiting groove 120a; Figure 1 As shown, the knob assembly also includes: a first magnetic member 130 and a second magnetic member 140 arranged in the installation cavity 111a; the first magnetic member 130 and the second magnetic member 140 attract each other, so that the first end of the second magnetic member 140 is limited to the first limiting groove 111b, and the second end of the second magnetic member 140 is limited to the second limiting groove 120a, so that the base 120 is driven to rotate with the rotating part 111 while rotating, wherein the first end and the second end of the second magnetic member 140 are relatively distributed.

[0054] As an example, Figure 1 As shown, the knob potentiometer 110 includes: a mounting portion 112 electrically connected to the circuit board 200 and a rotating portion 111 rotatably mounted on the mounting portion 112 .

[0055] As for the rotating assembly as described above, when the first magnetic member 130 and the second magnetic member 140 attract each other, the two ends of the second magnetic member 140 can be firmly limited in the first limiting groove 111b and the second limiting groove 120a, so as to realize the fixed connection between the base 120 and the rotating part 111 of the knob potentiometer 110. Then, in the process of rotating the base 120, the rotating part 111 of the knob potentiometer 110 can also be driven to rotate by the base 120. It can be seen that the rotating assembly as described above can not only realize the synchronous rotation of the base 120 and the rotating part 111 of the knob potentiometer 110, meeting the use requirements of the rotating assembly, but also prevent the base 120 from falling off from the knob potentiometer 110, and there is no need to connect the base 120 and the knob potentiometer 110 by a snap connection method, which can prevent the base 120 from falling off due to aging of the snap, thereby ensuring the personal safety of the user.

[0056] like Figure 1 As shown, in some embodiments of the present invention, the number of the first magnetic member 130 is set to 1, the number of the second magnetic member 140 is set to multiple, and the multiple second magnetic members 140 are distributed at intervals along the circumference of the base 120; Figure 2 As shown, the number of the first limiting grooves 111b is set to be multiple, and the multiple first limiting grooves 111b are distributed at intervals along the circumference of the rotating part 111; the number of the second limiting grooves 120a is set to be multiple, and the multiple second limiting grooves 120a are distributed at intervals along the circumference of the base 120, and each second limiting groove 120a corresponds to each first limiting groove 111b one by one. In this way, the number of first magnetic members 130 installed can be reduced under the premise of ensuring that the first magnetic member 130 and the second magnetic member 140 attract each other.

[0057] It should be noted that the number of the first limiting groove 111 b , the second limiting groove 120 a and the second magnetic member 140 is the same, for example, four.

[0058] Optionally, the first magnetic member 130 may be a cylindrical magnet and coaxially distributed with the rotating portion 111 of the knob potentiometer 110. The magnet has a strong magnetic force and can firmly attract the surrounding second magnetic members 140 to prevent the base 120 from shaking while rotating.

[0059] Optionally, the plurality of second magnetic members 140 are evenly distributed along the circumference of the base 120. It is understandable that the plurality of first limiting grooves 111b are evenly distributed along the circumference of the rotating portion 111, and the plurality of second limiting grooves 120a are evenly distributed along the circumference of the base 120. In this way, the plurality of second magnetic members 140 can be evenly stressed, thereby preventing the base 120 from shaking while rotating. The second magnetic member 140 can be a cylindrical or quadrangular prism, pentagonal prism or other regular multi-prism structure extending toward the first magnetic member 130.

[0060] The embodiment of the present invention does not impose any specific limitation on the material of the second magnetic member 140 , and the second magnetic member 140 may be, for example, a magnet or neodymium iron boron.

[0061] Further, in some embodiments of the present invention, Figure 2 As shown, the base 120 is also provided with a receiving groove 120b; Figure 1 As shown, the knob assembly also includes: an elastic member 150 and an unlocking member 160; the elastic member 150 is used to support the first magnetic member 130 in the installation cavity 111a, and when the first magnetic member 130 and the second magnetic member 140 attract each other, the elastic member 150 is in a non-limit compression state; the first end of the unlocking member 160 is located in the accommodating groove 120b, and the second end of the unlocking member 160 extends into the installation cavity 111a and is used to press the first magnetic member 130 until the first magnetic member 130 and the second magnetic member 140 are no longer attracted to each other, wherein the first end and the second end of the unlocking member 160 are relatively distributed. If the base 120 of the knob assembly needs to be replaced and the knob assembly needs to be disassembled, the unlocking member 160 is pressed to push the first magnetic member 130 to compress the elastic member 150 until the mutual attraction between the first magnetic member 130 and the second magnetic member 140 is released, and then the second magnetic member 140 is disengaged from the first limiting groove 111b, and then the base 120 can be removed from the rotating part 111 of the knob potentiometer 110, thereby completing the removal of the base 120.

[0062] Specifically in some embodiments of the present invention, the elastic member 150 may be a spring. Optionally, the first end of the spring is connected to the mounting portion 112 of the knob potentiometer 110, and the second end of the spring abuts against the first magnetic member 130, wherein the first end and the second end of the spring are relatively distributed. A clamping table is provided on the mounting portion 112 of the knob potentiometer 110, and the first end of the spring is mounted on the clamping table by interference fit, so that the spring can be easily disassembled and assembled.

[0063] Optionally, the unlocking member 160 may be a rod-shaped structure.

[0064] Specifically in some embodiments of the present invention, Figure 1As shown, the outer diameter of the first end of the unlocking member 160 is greater than the outer diameter of the second end, and the outer diameter of the first end of the unlocking member 160 is also greater than the diameter of the bottom opening of the receiving groove 120b. It can be understood that the outer diameter of the second end of the unlocking member 160 is equal to or less than the diameter of the bottom opening of the receiving groove 120b, and the outer diameter of the first end of the unlocking member 160 is equal to or less than the diameter of the receiving groove 120b, so as to ensure that the unlocking member 160 can reciprocate as a whole. When the base 120 needs to be removed, the unlocking member 160 can be pressed until the first end of the unlocking member 160 is against the bottom of the receiving groove 120b. At this point, the mutual attraction between the first magnetic member 130 and the second magnetic member 140 is released, and there is no need to continue pressing the unlocking member 160, which saves the time for removing the base 120.

[0065] Specifically in some embodiments of the present invention, Figure 1 As shown, the knob assembly further includes: a detachable panel 170, which is covered on the base 120 to block the receiving groove 120b. When the knob assembly works normally, the panel 170 can prevent the unlocking member 160 from falling off. When the base 120 is replaced, the panel 170 is first removed from the base 120, and then the unlocking member 160 is pressed.

[0066] Optionally, the panel 170 can be mounted on the base 120 by a snap-fit ​​connection or a threaded connection. When the snap-fit ​​connection is adopted, a plurality of slots are provided on the base 120, and a plurality of snaps can be provided on the panel 170, each snap can be clamped into a corresponding slot. When the threaded connection is adopted, a thread is provided on the outer wall of the base 120, and a thread matching the thread on the outer wall of the base 120 is provided on the inner wall of the panel 170.

[0067] Furthermore, if Figure 1 As shown, when the first magnetic member 130 and the second magnetic member 140 attract each other, the first end of the unlocking member 160 abuts against the panel 170. In this way, the first magnetic member 130 can be limited along the axial direction of the knob potentiometer 110 to prevent the first magnetic member 130 from shaking along the axial direction of the knob potentiometer 110. Of course, when the first magnetic member 130 and the second magnetic member 140 attract each other, the end surface of the first magnetic member 130 away from the elastic member 150 abuts against the inner wall of the rotating part 111 of the knob potentiometer 110, and the first magnetic member 130 can also be limited along the axial direction of the knob potentiometer 110. It should be noted that in this case, the elastic member 150 is in a compressed state, that is, the elastic member 150 will be subjected to a restoring force so that the first magnetic member 130 has a tendency to move away from the mounting portion 112 of the knob potentiometer 110, thereby causing the first magnetic member 130 to abut against the inner wall of the rotating portion 111.

[0068] Based on the premise that the knob assembly further includes an elastic member 150 and an unlocking member 160, as Figure 2 As shown, in some embodiments of the present invention, the second limiting groove 120a is configured as a through groove structure; when the first magnetic member 130 and the second magnetic member 140 are no longer attracted to each other, the first magnetic member 130 can slide downward along the first limiting groove 111b and the second limiting groove 120a by its own gravity. Figure 1 Place the base 120 in the direction shown, press the unlocking member 160 downward, thereby pushing the first magnetic member 130 downward to compress the elastic member 150 until the first magnetic member 130 and the second magnetic member 140 are no longer attracted to each other, and then the second magnetic member 140 moves downward along the first limiting groove 111b and the second limiting groove 120a by its own gravity until it slides out of the second limiting groove 120a, and then the base 120 is removed from the rotating part 111 of the knob potentiometer 110, so that the removal of the base 120 is completed. In this way, there is no need to manually remove the second magnetic member 140 from the second limiting groove 120a, which reduces the labor intensity and operation time of disassembling the base 120

[0069] Specifically in some embodiments of the present invention, Figure 2 As shown, the first limiting groove 111b and the second limiting groove 120a are both configured as a linear groove structure inclined downward. The first limiting groove 111b and the second limiting groove 120a of this type of structure are simple in structure, and the second magnetic member 140 can also slide downward by its own gravity. It should be noted that the first limiting groove 111b and the second limiting groove 120a are coaxially distributed.

[0070] Based on the premise that the second limiting groove 120a is set as a through groove structure, Figure 1 As shown, in some embodiments of the present invention, the diameter of the first end of the second limiting groove 120a is smaller than the diameter of the second end, wherein the first end and the second end of the second limiting groove 120a are relatively distributed, and the first end of the second limiting groove 120a is distributed close to the corresponding first limiting groove 111b; the outer diameter of the second magnetic member 140 is adapted to the inner diameter of the first end of the second limiting groove 120a, and a guide protrusion 141 is provided on the outer wall of the second magnetic member 140 (see Figure 3 ). The diameter of the second end of the second limiting groove 120a is greater than the diameter of the first end, so that one end of the second magnetic member 140 can be quickly placed in the second limiting groove 120a, and when the second magnetic member 140 slides in the second limiting groove 120a, the guide protrusion 141 can play a guiding role, so that the second magnetic member 140 can be quickly limited in the first limiting groove 111b and the second limiting groove 120a under the action of the first magnetic member 130.

[0071] Similarly, based on the premise that the second limiting groove 120a is set as a through groove structure, as Figure 1As shown, a detachable blocking member 180 is provided at the opening of the second limiting groove 120a away from the rotating portion 111. The blocking member 180 can prevent external dust or rainwater from entering the second limiting groove 120a on the one hand, and can also prevent the second magnetic member 140 from sliding out of the second limiting groove 120a during the operation of the knob assembly on the other hand, thereby preventing the second magnetic member 140 from being lost.

[0072] Optionally, the blocking member 180 may be a blocking ring, which may be installed on the base 120 by threaded connection, snap connection, or screw connection. Of course, the blocking member 180 may also include a plurality of blocking plates, each of which is covered at an opening of the corresponding second limiting groove 120a away from the first magnetic member 130.

[0073] Another embodiment of the present invention further provides an electronic device, which includes the knob assembly described above.

[0074] In the electronic device as described above, when the first magnetic member 130 and the second magnetic member 140 of the rotating assembly attract each other, the two ends of the second magnetic member 140 can be firmly limited in the first limiting groove 111b and the second limiting groove 120a to achieve a fixed connection between the base 120 and the rotating part 111 of the knob potentiometer 110. Then, in the process of rotating the base 120, the rotating part 111 of the knob potentiometer 110 can also be driven to rotate by the base 120. It can be seen that in the electronic device as described above, the rotating assembly can not only realize the synchronous rotation of the base 120 and the rotating part 111 of the knob potentiometer 110 to meet the use requirements of the rotating assembly, but also prevent the base 120 from falling off from the knob potentiometer 110. There is no need to connect the base 120 and the knob potentiometer 110 in a snap-fit ​​connection manner, which can prevent the base 120 from falling off due to aging of the snap-fit, thereby ensuring the personal safety of the user.

[0075] The electronic device involved in the embodiment of the present invention may be an electrical appliance such as a wall-mounted boiler and a water heater.

[0076] 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.

[0077] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A knob assembly, comprising a knob potentiometer and a base body covered on a rotating portion of the knob potentiometer, characterized in that: The rotating part is provided with a mounting cavity and a first limiting groove, and the base is provided with a second limiting groove; The knob assembly further includes: a first magnetic member and a second magnetic member disposed in the mounting cavity; The first magnetic member and the second magnetic member attract each other so that the first end of the second magnetic member is limited in the first limiting groove, and the second end of the second magnetic member is limited in the second limiting groove, so that the base is driven to rotate with the rotating part while rotating, wherein the first end and the second end of the second magnetic member are relatively distributed.

2. The knob assembly according to claim 1, characterized in that: The number of the first magnetic members is set to 1, the number of the second magnetic members is set to plural, and the plurality of the second magnetic members are distributed at intervals along the circumference of the substrate; The number of the first limiting grooves is set to be multiple, and the multiple first limiting grooves are distributed at intervals along the circumference of the rotating part; The number of the second limiting grooves is set to be multiple, and the multiple second limiting grooves are distributed at intervals along the circumference of the base body, and each of the second limiting grooves corresponds to each of the first limiting grooves one by one.

3. The knob assembly according to claim 2, characterized in that: The base body is provided with a receiving groove; The knob assembly further includes: an elastic member and an unlocking member; The elastic member is used to support the first magnetic member in the installation cavity, and when the first magnetic member and the second magnetic member attract each other, the elastic member is in a non-limit compression state; The first end of the unlocking member is located in the accommodating groove, and the second end of the unlocking member extends into the installation cavity and is used to press the first magnetic member until the first magnetic member and the second magnetic member are no longer attracted to each other, wherein the first end and the second end of the unlocking member are relatively distributed.

4. The knob assembly according to claim 3, characterized in that: The elastic member is a spring.

5. The knob assembly according to claim 3, characterized in that: The outer diameter of the first end of the unlocking member is greater than the outer diameter of the second end, and the outer diameter of the first end of the unlocking member is also greater than the diameter of the bottom opening of the accommodating groove.

6. The knob assembly according to claim 3, characterized in that: The knob assembly further comprises: a detachable panel, wherein the panel cover is mounted on the base to seal the receiving groove.

7. The knob assembly according to claim 6, characterized in that: When the first magnetic member and the second magnetic member attract each other, the first end of the unlocking member abuts against the panel.

8. The knob assembly according to any one of claims 3 to 7, characterized in that: The second limiting groove is configured as a through groove structure; When the first magnetic member and the second magnetic member are no longer attracted to each other, the second magnetic member can slide downward along the first limiting groove and the second limiting groove by its own gravity.

9. The knob assembly according to claim 8, characterized in that: The first limiting groove and the second limiting groove are both configured as a linear groove structure inclined downward.

10. The knob assembly according to claim 8, characterized in that: The diameter of the first end of the second limiting groove is smaller than the diameter of the second end, wherein the first end and the second end of the second limiting groove are relatively distributed, and the first end of the second limiting groove is distributed close to the corresponding first limiting groove; The outer diameter of the second magnetic member is matched with the inner diameter of the first end of the second limiting groove, and a guide protrusion is arranged on the outer wall of the second magnetic member.

11. The knob assembly according to claim 8, characterized in that: A detachable blocking member is provided at an opening of the second limiting groove away from the rotating part.

12. The knob assembly according to claim 11, characterized in that: The blocking member is a blocking ring.

13. An electronic device, characterized in that: The electronic device comprises the knob assembly according to any one of claims 1 to 12.

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