Knob switch
By utilizing the cooperation between the stop structure on the knob and the limit structure on the housing panel in the knob switch, the rotation angle of the knob is limited, which solves the problem in the prior art that the stop structure of the potentiometer is damaged due to large torque. , improves the service life of the product.
Patent Information
- Application Number
- CN202420354865.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-26
AI Technical Summary
When existing knob switches face large torque, they can easily cause damage to the stop structure inside the potentiometer, which in turn leads to failure of product functions.
By setting a stop structure and a limit ring on the knob of the rotary switch, and setting a limit structure and an escape hole on the panel of the housing, the cooperation between the stop structure and the limit structure is used to limit the rotation angle of the knob. Avoid relying on the internal structure of the rotation function component for constraints.
This effectively prevents the rotary functional components from being damaged due to large torque and increases the service life of the rotary switch products.
Smart Images
Figure CN222380468U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of switch equipment, and in particular to a knob switch. Background Art
[0002] The rotary switch can control the on and off of electronic products and increase or decrease their corresponding functions, and is widely used in various fields. Common rotary switches include dimmer switches and speed control switches.
[0003] In the related art, a knob switch has a potentiometer, whose knob is connected to the shaft of the potentiometer, and the rotation range of the knob is usually limited by a stop structure inside the limiter. However, in some miniaturized switch devices, the size of the potentiometer is small and the ability to withstand torque is also poor. When the user applies too much torque to the knob, it is easy to cause damage to the stop structure inside the potentiometer, which in turn causes the product to fail. Utility Model Content
[0004] In view of this, the present application provides a knob switch that can protect rotating functional components from being damaged by large torque, thereby increasing the service life of the product.
[0005] This application specifically adopts the following technical solutions:
[0006] A knob switch comprises a housing, a rotary function component and a knob;
[0007] The housing comprises a panel, and a limiting structure and an avoidance hole are arranged on the panel;
[0008] The rotating functional component is located inside the shell, and the rotating functional component has a rotating shaft, one end of which extends out of the shell through the avoidance hole and can rotate relative to the shell;
[0009] The knob has a connecting seat, a stop structure and a limiting ring, wherein the connecting seat is connected to one end of the rotating shaft, the limiting ring surrounds the connecting seat and is spaced apart from the connecting seat, wherein a rotation space is formed between the limiting ring and the side wall of the knob, the stop structure and the limiting structure are both located in the rotation space, and the stop structure is used to interfere with the limiting structure when the knob rotates to constrain the rotation angle of the knob.
[0010] Optionally, a height of the limiting structure is greater than a distance between the stopping structure and the panel.
[0011] Optionally, a reinforcement structure is provided on the inner wall of the knob, and the reinforcement structure is located in the rotation space. Both ends of the reinforcement structure are respectively connected to the limiting ring and the side wall of the knob, wherein the distance between the reinforcement structure and the panel is greater than the height of the limiting structure.
[0012] Optionally, the knob switch satisfies at least one of the following:
[0013] The ratio of the first distance between the stop structure and the panel to the height of the limiting structure is in the range of 0.25-0.8; and / or,
[0014] A ratio of a second distance between the reinforcing structure and the panel to a height of the limiting structure is greater than 1.2.
[0015] Optionally, the reinforcement structure includes a first reinforcement rib and a second reinforcement rib, the first reinforcement rib and the stop structure are located on opposite sides of the limiting ring, and the second reinforcement rib is located between the first reinforcement rib and the stop structure.
[0016] Optionally, a first protrusion is provided on the side of the limit ring facing the panel, and the first protrusion is configured to abut against the outer surface of the panel when the axis of the rotating shaft of the rotating functional component is inclined relative to the axis of the avoidance hole to correct the axial direction of the rotating shaft.
[0017] Optionally, the first convex portion includes a plurality of first protrusions, wherein when the axial direction of the rotating shaft is parallel to the axial direction of the avoidance hole, there is a gap between the first protrusions and the outer surface of the panel.
[0018] Optionally, the rotation function component includes a potentiometer and a connecting sleeve;
[0019] The potentiometer has the rotating shaft, the connecting sleeve is connected to one end of the rotating shaft, and the connecting sleeve has a first part located outside the housing through the avoidance hole;
[0020] Wherein, a first clamping structure is arranged on the first part, a second clamping structure is arranged on the connecting seat, and the first clamping structure and the second clamping structure are connected by snapping.
[0021] Optionally, the connecting sleeve further comprises a second portion located inside the housing, the second portion is connected to the first portion, and the cross-sectional area of the second portion is larger than the hole area of the avoidance hole;
[0022] The second portion is provided with a second protrusion on one side of the panel, and the second protrusion is configured to abut against the inner surface of the panel when the axis of the rotating shaft of the rotating functional component is inclined relative to the axis of the avoidance hole to correct the axial direction of the rotating shaft.
[0023] Optionally, the second convex portion includes a plurality of second convex points, wherein when the axial direction of the rotating shaft is parallel to the axial direction of the avoidance hole, there is a gap between the first convex points and the outer surface of the panel.
[0024] The rotary switch provided by the embodiment of the present application has a rotary function component housed inside the housing, one end of the rotating shaft can extend out of the housing through the avoidance hole on the panel and be connected to the connection seat of the knob, so that the knob and the rotating shaft can rotate relative to the housing; a limiting structure is also provided on the panel, the knob has a limiting ring and a stopper structure, the limiting ring surrounds the connection seat and is spaced from the connection seat, an annular rotation space is formed between the limiting ring and the side wall of the knob, the limiting structure and the stopper structure are both located in the limiting space, as the knob rotates, the stopper structure can rotate in the area between the two ends of the limiting structure in the rotation space, wherein when the stopper structure interferes with any end of the limiting structure, the stopper structure is prevented from rotating, thereby realizing the constraint on the rotation angle of the knob. Therefore, in the rotary switch of the embodiment of the present application, the rotation angle of the knob is limited by the cooperation between the stopper structure on the knob and the limiting structure on the panel, rather than by the internal structure of the rotary function component, thereby avoiding the damage and failure of the rotary function component due to large torque, and improving the service life of the rotary switch product. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 is an exploded view of a knob switch provided in an embodiment of the present application;
[0027] Figure 2 It is a schematic diagram of the internal structure of a knob provided in an embodiment of the present application;
[0028] Figure 3 is along Figure 1 Sectional view along line AA;
[0029] Figure 4 is a schematic diagram of the positional relationship between the reinforcement structure, the stop structure and the limiting structure provided in the embodiment of the present application;
[0030] Figure 5 is a front view of the internal structure of the knob provided in an embodiment of the present application;
[0031] Figure 6 is a cross-sectional view of a knob switch provided in an embodiment of the present application;
[0032] Figure 7 yes Figure 6 The enlarged view of point A in the middle;
[0033] Figure 8 is an exploded view of a rotating functional component provided in an embodiment of the present application;
[0034] Fig. 9 yes Figure 6 The enlarged view of point B in the middle;
[0035] Fig.10 It is a schematic diagram of the structure of a connecting sleeve provided in an embodiment of the present application.
[0036] Reference numerals:
[0037] 1. Shell; 11. Panel; 111. Limiting structure; 112. Avoidance hole; 113. Outer surface; 114. Inner surface; 12. Bottom plate;
[0038] 2. Rotating functional component; 21. Potentiometer; 211. Rotating shaft; 22. Connecting sleeve; 221. First part; 2211. First clamping structure; 222. Second part; 2221. Second convex part; 2222. Second gap; 23. Protective cover; 24. Circuit board;
[0039] 3. Knob; 31. Connecting seat; 311. Second clamping structure; 32. Stop structure; 33. Limiting ring; 331. First protrusion; 332. First gap; 34. Reinforcement structure; 341. First reinforcing rib; 342. Second reinforcing rib; 35. Side wall; 36. Rotation space. DETAILED DESCRIPTION
[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0041] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0042] The present application embodiment provides a knob switch, such as Figure 1As shown, the knob switch includes a shell 1, a rotating functional component 2 and a knob 3; the shell 1 includes a panel 11, on which a limiting structure 111 and an avoidance hole 112 are arranged; the rotating functional component 2 is located inside the shell 1, and the rotating functional component 2 has a rotating shaft 211, one end of the rotating shaft 211 extends to the outside of the shell 1 through the avoidance hole 112, and the rotating shaft 211 can rotate relative to the shell 1; the knob 3 has a connecting seat 31, a stopping structure 32 and a limiting ring 33, the connecting seat 31 is connected to one end of the rotating shaft 211, the limiting ring 33 surrounds the connecting seat 31 and is spaced from the connecting seat 31, wherein a rotation space 36 is formed between the limiting ring 33 and the side wall 35 of the knob 3, the stopping structure 32 and the limiting structure 111 are both located in the rotation space 36, and the stopping structure 32 is used to interfere with the limiting structure 111 when the knob 3 rotates to constrain the rotation angle of the knob 3.
[0043] Therefore, the knob switch provided in the embodiment of the present application limits the rotation angle of the knob 3 by the cooperation between the stop structure 32 on the knob 3 and the limit structure 111 on the panel 11, rather than limiting the rotation angle of the knob 3 by the internal structure of the rotating functional component 2. This avoids damage and failure of the rotating functional component 2 due to large torque, thereby improving the service life of the knob switch product.
[0044] In order to make the technical solutions and advantages of this application clearer, Figures 1 to 10 , a knob switch provided in an embodiment of the present application is further introduced and illustrated.
[0045] Figure 1 FIG. 1 is an exploded view of a rotary switch provided in an embodiment of the present application. Figure 1 As shown, the knob switch includes a housing 1 , a rotation function component 2 and a knob 3 .
[0046] The housing 1 includes a panel 11 and a bottom plate 12. Figure 1 As shown, the panel 11 is in the shape of a cover, which is covered on the bottom plate 12, and a containing space is enclosed between the panel 11 and the bottom plate 12 for accommodating other components in the knob switch. A avoidance hole 112 is provided in the middle position of the panel 11, and the avoidance hole 112 is used to allow the rotating shaft 211 of the rotating functional component 2 to pass through it to connect the knob 3. A limiting structure 111 is also provided on the outer surface 113 of the panel 11, and the limiting structure 111 is an arc-shaped structure arranged around the avoidance hole 112. Exemplarily, the limiting structure 111 can be an arc-shaped limiting rib, and the curvature of the arc-shaped limiting rib can be set according to actual needs, for example, the curvature of the arc-shaped limiting rib is greater than 0.25π and less than 0.5π.
[0047] The rotating function component 2 is the core component of the knob switch, which is used to realize the adjustment control function. The rotating function component 2 is accommodated inside the housing 1, and the rotating function component 2 has a rotating shaft 211, which extends to the outside of the housing 1 through the avoidance hole 112 on the panel 11 and is connected to the knob 3. Among them, the rotating shaft 211 of the rotating function component 2 has a certain rotation angle range, and as the rotation angle of the rotating shaft 211 changes, the output of the rotating function component 2 also changes. Exemplarily, the rotating function component 2 housing 1 is a potentiometer 21 component.
[0048] The knob 3 is located outside the housing 1 and is connected to the shaft 211 of the rotating functional component 2, so that the knob 3 rotates synchronously with the shaft 211. When the output of the knob switch needs to be adjusted, the shaft 211 can be driven to rotate by rotating the knob 3, which improves the convenience of operation. Figure 1 As shown, the knob 3 is in the shape of a cover with one side open, including a cover plate and a surrounding plate. The cover plate is directly opposite to the avoidance hole 112, and the surrounding plate is annular and vertically connected to the outer peripheral wall of the cover plate. For the convenience of description, the plate wall of the cover plate facing the avoidance hole 112 is referred to as the "inner wall of the knob 3", and the inner annular surface of the surrounding plate is referred to as the "side wall 35 of the knob 3". Figure 2 , a connection seat 31 and a stop ring 33 are arranged on the inner wall of the knob 3, both of which are annular, and the end of the rotating shaft 211 extending out of the housing 1 is connected to the connection seat 31, and illustratively, the end of the rotating shaft 211 is inserted into and fixed in the connection seat 31; the stop ring 33 is located on the outer side of the connection seat 31, and the stop ring 33 surrounds the connection seat 31 and is spaced from the connection seat 31. A rotation space 36 is formed between the stop ring 33 and the side wall 35 of the knob 3, and the stop structure 111 is located in the rotation space 36. A stop structure 32 is also provided on the inner wall of the knob 3. The stop structure 32 is located in the rotation space 36 and between the two ends of the limiting structure 111. When the knob 3 is rotated, the stop structure 32 can rotate in the area between the two ends of the limiting structure 111. When the stop structure 32 rotates to interfere with any end of the limiting structure 111, the knob 3 is prevented from rotating. In other words, the rotation angle of the knob 3 is constrained by the cooperation between the stop structure 32 and the limiting structure 111.
[0049] In some embodiments of the present application, Figure 3 and Figure 4 As shown, the height H of the limiting structure 111 is greater than the first distance D1 between the stopping structure 32 and the panel 11 , so that the stopping structure 32 can abut against the limiting structure 111 , thereby preventing the knob 3 from continuing to rotate.
[0050] Optionally, the ratio of the first distance D1 to the height of the limiting structure 111 is in the range of 0.25-0.8. Exemplarily, the first distance D1 is 1 mm-2 mm, and the height H of the limiting structure 111 is 3 mm-4 mm.
[0051] In some embodiments of the present application, see Figure 2 The inner wall of the knob 3 is also provided with a reinforcement structure 34 , and the reinforcement structure 34 is located in the rotation space 36 .
[0052] The reinforcement structure 34 is used to improve the structural strength of the knob 3. Figure 2 As shown, the reinforcing structure 34 extends along the radial direction of the knob 3, and the two ends of the reinforcing structure 34 are respectively connected to the limiting ring 33 and the side wall 35 of the knob 3. In order to avoid interference between the reinforcing structure 34 and the limiting structure 111, as shown in FIG. Figure 4 As shown, there is a second distance D2 between the reinforcing structure 34 and the panel 11 , and the second distance D2 is greater than the height of the limiting structure 111 .
[0053] Optionally, the ratio of the second distance D2 to the height of the limiting structure 111 is greater than 1.2. Exemplarily, the second distance D2 is 5 mm-7 mm.
[0054] In some embodiments of the present application, the reinforcement structure 34 may be a reinforcement rib. Figure 5 As shown, the reinforcing structure 34 may include a first reinforcing rib 341 and a second reinforcing rib 342 . The first reinforcing rib 341 and the stop structure 32 are located on opposite sides of the limiting ring 33 , and the second reinforcing rib 342 is located between the first reinforcing rib 341 and the stop structure 32 .
[0055] The knob 3 designed in the above manner, on the one hand, can meet the requirements for the structural strength of the knob 3 in daily use, making it less likely to be deformed and damaged as a whole; on the other hand, since no reinforcement structure 34 is provided on the opposite side of the second reinforcement rib 342, this side can be deformed under the action of external force, thereby facilitating the disassembly between the knob 3 and the rotating shaft 211.
[0056] Of course, in other embodiments of the present application, the number of reinforcing ribs may be more than two, and those skilled in the art may make a selection based on actual needs.
[0057] In some embodiments, the stop structure 32 is a stop plate extending in the radial direction of the knob 3 , and the two ends of the stop structure 32 are respectively connected to the limit ring 33 and the side wall 35 of the knob 3 . The height of the stop structure 32 is greater than that of the reinforcement structure 34 .
[0058] In some embodiments of the present application, Figure 8As shown, the rotary function component 2 includes a potentiometer 21 and a connecting sleeve 22; the potentiometer 21 has a rotating shaft 211, the connecting sleeve 22 is connected to one end of the rotating shaft 211, and the connecting sleeve 22 has a first portion 221 extending to the outside of the housing 1 through the avoidance hole 112, and the first portion 221 is provided with a first clamping structure 2211. Figure 2 As shown, a second clamping structure 311 is disposed on the connection seat 31 , and the second clamping structure 311 is buckled and connected with the first clamping structure 2211 to fix the knob 3 and the rotating shaft 211 of the rotating functional component 2 together.
[0059] Optionally, the first clamping structure 2211 is one of a clamping block and a clamping slot, and the second clamping structure 311 is the other of the clamping block and the clamping slot. The clamping slot may be a through slot or a non-through slot. Figure 2 and Figure 8 As shown, the first engaging structure 2211 is a block, the second portion 222 is a through slot, and the block is engaged with the through slot.
[0060] In some embodiments of the present application, see Figure 8 The rotating functional component 2 further includes a circuit board 24 and a protective cover 23. The potentiometer 21 is welded and connected to the circuit board 24 to achieve fixation. The protective cover 23 is covered on the potentiometer 21 and is fixedly connected to the circuit board 24 or the bottom plate 12 to achieve protection of the potentiometer 21. A through hole may be provided on the top of the protective cover 23 so that the rotating shaft 211 of the potentiometer 21 can extend therefrom; the connecting sleeve 22 is located outside the protective cover 23.
[0061] In the related art, during the process of welding the potentiometer 21 to the circuit board 24, due to process problems, the potentiometer 21 often tilts on the circuit board 24. In this case, the rotating shaft 211 of the potentiometer 21 is also tilted, that is, the axis of the rotating shaft 211 of the potentiometer 21 is tilted relative to the axis of the avoidance hole 112. This situation will cause the knob 3 installed on the rotating shaft 211 to tilt, affecting the appearance of the product, and may even cause the knob 3 to excessively scratch the panel 11, thereby failing to rotate normally.
[0062] To solve the above problems, in some embodiments of the present application, Figure 5 , Figure 6 and Figure 7 As shown, a first protrusion 331 is provided on the side of the limit ring 33 facing the panel 11, and the first protrusion 331 is configured to abut against the outer surface 113 of the panel 11 when the axial direction of the rotating shaft 211 of the rotating functional component 2 is inclined relative to the axis of the avoidance hole 112 to correct the axial direction of the rotating shaft 211.
[0063] By providing the first protrusion 331 on the limiting ring 33, when the axis of the rotating shaft 211 is tilted, the rigid abutment between the first protrusion 331 and the panel 11 can be used to correct the excessive skewness of the rotating shaft 211, thereby avoiding the skewness of the knob 3 and ensuring the normal selection rotation of the knob 3.
[0064] Alternatively, if Figure 5 As shown, the first convex portion 331 may include a plurality of first convex points, and the plurality of first convex points are arranged at equal intervals along the circumferential direction of the limiting ring 33, wherein, as shown in FIG. Figure 7 As shown, when the axis direction of the rotating shaft 211 is parallel to the axis direction of the avoiding hole 112, there is a first gap 332 between each first protrusion and the outer surface 113 of the panel 11. In other words, when the rotating shaft 211 is not skewed, the first protrusion does not contact the panel 11 to avoid friction between the knob 3 and the panel 11, which affects the rotation feel.
[0065] In other embodiments of the present application, Figure 8 As shown, the connecting sleeve 22 has a second portion 222 located inside the housing 1 , the second portion 222 is connected to the first portion 221 , and the cross-sectional area of the second portion 222 is larger than that of the first portion 221 to prevent it from escaping from the avoidance hole 112 .
[0066] like Figure 6 and Fig. 9 As shown, the second part 222 is provided with a second protrusion 2221 on the side facing the panel 11, and the second protrusion 2221 is configured to abut against the inner surface 114 of the panel 11 when the axis of the rotating shaft 211 of the rotating functional component 2 is inclined relative to the axis of the avoidance hole 112 to correct the axial direction of the rotating shaft 211.
[0067] By providing a second protrusion 2221 on the second part 222, when the axis of the rotating shaft 211 is tilted, the rigid abutment between the second protrusion 2221 and the panel 11 can be used to correct the excessive skewness of the rotating shaft 211, thereby avoiding the skewness of the knob 3 and ensuring the normal selection rotation of the knob 3.
[0068] Furthermore, the first protrusion 331 and the second protrusion 2221 are respectively located on the inner side and the outer side of the panel 11 , so that the skewness of the rotating shaft 211 can be effectively corrected and the knob 3 can be balanced.
[0069] Alternatively, if Fig.10 As shown, the second convex portion 2221 may include a plurality of second convex points, and the plurality of second convex points are arranged at equal intervals along the circumferential direction of the second portion 222, wherein, as shown in FIG. Fig. 9As shown, when the axis direction of the rotating shaft 211 is parallel to the axis direction of the avoiding hole 112, there is a second gap 2222 between each second protrusion and the inner surface 114 of the panel 11. In other words, when the rotating shaft 211 is not skewed, the second protrusion does not contact the panel 11, so as to avoid friction between the knob 3 and the panel 11, which affects the rotation feel.
[0070] Optionally, the height of the first gap 332 is 0.1 mm-0.2 mm; and / or the height of the second gap 2222 is 0.1 mm-0.2 mm. The height directions of the first gap 332 and the second gap 2222 are parallel to the protruding direction of the protrusion.
[0071] To summarize, in the knob switch provided in the embodiment of the present application, the rotating functional component 2 is accommodated inside the shell 1, and one end of the rotating shaft 211 can extend out of the shell 1 through the avoidance hole 112 on the panel 11, and is connected to the connecting seat 31 of the knob 3, so that the knob 3 and the rotating shaft 211 can both rotate relative to the shell 1; a limiting structure 111 is also provided on the panel 11, and the limiting structure 111 is provided around a part of the avoidance hole 112, and the knob 3 has a stop structure 32, which is located between the two ends of the limiting structure 111, and as the knob 3 rotates, the stop structure 32 can rotate between the two ends of the limiting structure 111, wherein when the stop structure 32 interferes with either end of the limiting structure 111, the stop structure 32 is prevented from rotating, thereby realizing the constraint on the rotation angle of the knob 3. Therefore, in the rotary switch of the embodiment of the present application, the rotation angle of the knob 3 is limited by the cooperation between the stop structure 32 on the knob 3 and the limit structure 111 on the panel 11, rather than by the internal structure of the rotating functional component 2, thereby avoiding the damage and failure of the rotating functional component 2 due to large torque, and improving the service life of the rotary switch product. In addition, by providing convex points on the limit ring 33 of the knob 3 and the second part 222 of the connecting sleeve 22, the skewness of the rotating shaft 211 of the potentiometer 21 caused by the welding process can be effectively balanced, ensuring the normal rotation of the knob 3.
[0072] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
[0073] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A knob switch, characterized in that: The knob switch comprises a housing (1), a rotary function component (2) and a knob (3); The housing (1) comprises a panel (11), and a limiting structure (111) and an avoidance hole (112) are provided on the panel (11); The rotating functional component (2) is located inside the shell (1), and the rotating functional component (2) has a rotating shaft (211), one end of the rotating shaft (211) extends out of the shell (1) through the avoidance hole (112), and can rotate relative to the shell (1); The knob (3) comprises a connecting seat (31), a stop structure (32) and a limiting ring (33); the connecting seat (31) is connected to one end of the rotating shaft (211); the limiting ring (33) surrounds the connecting seat (31) and is spaced apart from the connecting seat (31); a rotation space (36) is formed between the limiting ring (33) and a side wall (35) of the knob (3); the stop structure (32) and the limiting structure (111) are both located in the rotation space (36); the stop structure (32) is used to interfere with the limiting structure (111) when the knob (3) rotates, so as to constrain the rotation angle of the knob (3).
2. The knob switch according to claim 1, characterized in that: The height of the limiting structure (111) is greater than the first distance between the stopping structure (32) and the panel (11).
3. The knob switch according to claim 1, characterized in that: The inner wall of the knob (3) is provided with a reinforcement structure (34); The reinforcing structure (34) is located in the rotating space (36), and two ends of the reinforcing structure (34) are respectively connected to the limiting ring (33) and the side wall (35) of the knob (3), wherein a second distance between the reinforcing structure (34) and the panel (11) is greater than a height of the limiting structure (111).
4. The knob switch according to claim 3, characterized in that: The ratio of the first distance between the stop structure (32) and the panel (11) to the height of the limiting structure (111) is in the range of 0.25-0.8; and / or, The ratio of the second distance between the reinforcing structure (34) and the panel (11) to the height of the limiting structure is greater than 1.
2.
5. The knob switch according to claim 3, characterized in that: The reinforcing structure (34) comprises a first reinforcing rib (341) and a second reinforcing rib (342); the first reinforcing rib (341) and the stop structure (32) are located on opposite sides of the limiting ring (33); and the second reinforcing rib (342) is located between the first reinforcing rib (341) and the stop structure (32).
6. The knob switch according to claim 3, characterized in that: The limiting ring (33) is provided with a first protrusion (331) on the side facing the panel (11), and the first protrusion (331) is configured to abut against the outer surface (113) of the panel (11) when the axis of the rotating shaft (211) of the rotating functional component (2) is inclined relative to the axis of the avoidance hole (112), so as to correct the axial direction of the rotating shaft (211).
7. The rotary switch according to claim 6, characterized in that: The first convex portion (331) includes a plurality of first protrusions, wherein when the axial direction of the rotating shaft (211) is parallel to the axial direction of the avoidance hole (112), a first gap (332) is provided between the plurality of first protrusions and the outer surface (113) of the panel (11).
8. The rotary switch according to claim 1, characterized in that: The rotating functional component (2) comprises a potentiometer (21) and a connecting sleeve (22); The potentiometer (21) comprises the rotating shaft (211), the connecting sleeve (22) is connected to one end of the rotating shaft (211), and the connecting sleeve (22) comprises a first portion (221) located outside the housing (1) through the avoidance hole (112); Wherein, a first clamping structure (2211) is provided on the first part (221), and a second clamping structure (311) is provided on the connecting seat (31), and the first clamping structure (2211) and the second clamping structure (311) are connected by snapping.
9. The knob switch according to claim 8, characterized in that: The connecting sleeve (22) further comprises a second portion (222) located inside the housing (1), the second portion (222) being connected to the first portion (221), and the cross-sectional area of the second portion (222) being larger than the hole area of the avoidance hole (112); The second portion (222) is provided with a second protrusion (2221) on a side facing the panel (11), and the second protrusion (2221) is configured to abut against the inner surface (114) of the panel (11) when the axis of the rotating shaft (211) of the rotating functional component (2) is inclined relative to the axis of the avoidance hole (112), so as to correct the axial direction of the rotating shaft (211).
10. The rotary switch according to claim 9, characterized in that: The second convex portion (2221) includes a plurality of second protrusions, wherein when the axial direction of the rotating shaft (211) is parallel to the axial direction of the avoidance hole (112), a second gap (2222) is provided between the plurality of second protrusions and the outer surface (113) of the panel (11).