Knob adjusting device

Abstract

The utility model discloses a knob adjusting device, and relates to the technical field of switch equipment. The knob adjusting device comprises a knob module and a base module, the knob module comprises a rotating part and a display assembly, the display assembly comprises a support, a display screen and at least one toggle switch, the rotating part is provided with an installation cavity used for installing the display assembly, the rotating part is arranged on the outer side of the display assembly in a sleeving mode and rotationally connected with the support, and the support is connected to the base module. The inner wall of the mounting cavity is provided with a plurality of toggle teeth arranged at intervals in the circumferential direction of the mounting cavity, and the toggle teeth are used for toggling the toggle switch when the rotating piece rotates relative to the display assembly. Adjustment is achieved through the toggle switch, the thickness of the knob module in the axial direction can be effectively reduced, and therefore miniaturization of the device can be achieved.

Description

Technical Field

[0001] This application relates to the field of switchgear technology, and more specifically, to a knob adjustment device. Background Technology

[0002] Rotary knob adjustment devices are commonly found in various electrical appliances and are used to adjust device parameters. For example, adjusting light brightness, switching operating modes, and adjusting volume. A rotary knob adjustment device consists of a base module and a knob module mounted on the base module. To improve the user experience, some existing technologies integrate a display screen into the knob module to provide visual services. In these technologies, the rotating component and the display component in the knob module are relatively rotatable, so the display screen remains stationary when the rotating component is turned for adjustment. These technologies rely on a hollow encoder to achieve the function of rotating parameter adjustment. Hollow encoders have a relatively large axial dimension, which results in a large knob module on the rotation axis, hindering the miniaturization of the overall device. Utility Model Content

[0003] The purpose of this application is to provide a knob adjustment device with a compact structure that facilitates miniaturization.

[0004] The embodiments of this application can be implemented as follows:

[0005] This application provides a knob adjustment device, including a knob module and a base module. The knob module includes a rotating component and a display component. The display component includes a bracket, a display screen, and at least one toggle switch. The rotating component has a mounting cavity for mounting the display component. The rotating component is sleeved on the outside of the display component and rotatably connected to the bracket. The bracket is connected to the base module. The inner wall of the mounting cavity is provided with a plurality of toggle teeth spaced circumferentially along the mounting cavity. The toggle teeth are used to toggle the toggle switch when the rotating component rotates relative to the display component.

[0006] In an optional embodiment, the display component includes a first circuit board connected to a bracket, a display screen electrically connected to the first circuit board, and a toggle switch connected to the first circuit board.

[0007] In an optional embodiment, the bracket includes a display screen mounting bracket and a pressure cover. The display screen is connected to the display screen mounting bracket. The display screen, the display screen mounting bracket, the first circuit board, and the pressure cover are arranged sequentially in the direction of the rotation axis extension of the rotating component. The display screen mounting bracket is connected to the pressure cover and clamps the first circuit board. The pressure cover is connected to the base module. The rotating component is rotatably connected to the pressure cover.

[0008] In an optional embodiment, the display component includes two toggle switches arranged symmetrically with respect to the rotation axis of the rotating component, and the number of toggle teeth is even and evenly spaced along the circumference of the rotating component.

[0009] In an optional embodiment, a clearance hole is provided on the first circuit board, a portion of one of the display screen mounting bracket and the cover passes through the clearance hole, and the portion passing through the clearance hole is connected to the other of the display screen mounting bracket and the cover.

[0010] In an optional embodiment, the cover is provided with a wire hole, and the base module includes a second circuit board, with the first circuit board and the second circuit board connected by a wire passing through the wire hole.

[0011] In an optional embodiment, the knob module further includes a bearing, the outer ring of which is fixedly connected to the rotating component, and the inner ring of which is fixedly connected to the bracket.

[0012] In an optional embodiment, a limiting part is provided on the bracket, and the limiting part abuts against the end of the inner ring of the bearing away from the base module along the axial direction of the bearing.

[0013] In an optional embodiment, a support portion is provided on the base module, and the support portion abuts against the inner ring of the bearing near one end of the base module along the axial direction of the bearing.

[0014] In an optional embodiment, one of the bracket and the base module is provided with a positioning protrusion, and the other is provided with a positioning groove. The positioning protrusion and the positioning groove are inserted and engaged, and the bracket and the base module are connected by screws.

[0015] In an optional embodiment, the toggle switch includes a fixed part and a swing arm, which can be pushed by actuating teeth to swing relative to the fixed part, and the swing arm always has a tendency to return to the initial position; the distance between two adjacent actuating teeth is greater than the maximum swing distance of the swing arm, wherein the maximum swing distance of the swing arm refers to the distance the end of the swing arm is displaced during the process of the swing arm moving from the initial position to the swing limit position.

[0016] The beneficial effects of the knob adjustment device provided in this application embodiment include:

[0017] The knob adjustment device provided in this application includes a knob module and a base module. The knob module includes a rotating component and a display component. The display component includes a bracket, a display screen, and at least one toggle switch. The display screen is mounted on the bracket. The rotating component has a mounting cavity for mounting the display component. The rotating component is sleeved on the outside of the display component and rotatably connected to the bracket. The bracket is connected to the base module. The inner wall of the mounting cavity is provided with multiple toggle teeth spaced circumferentially along the mounting cavity. The toggle teeth are used to actuate the toggle switch when the rotating component rotates relative to the display component. In this application embodiment, the rotating component can rotate to actuate the toggle switch using the toggle teeth, thereby triggering the toggle switch to achieve adjustment. Compared to a hollow encoder, the toggle switch has a smaller size, thus effectively reducing the axial thickness of the knob module. In addition, when the rotating component is turned, the toggle switch is sequentially actuated by multiple toggle teeth, producing a discontinuous "click-click-click" sound, which can satisfy some users who have requirements for sound. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a knob adjustment device in one embodiment of this application;

[0020] Figure 2 This is a cross-sectional view of a knob adjustment device in one embodiment of this application;

[0021] Figure 3 This is an exploded view of a knob adjustment device in one embodiment of this application;

[0022] Figure 4 This is a schematic diagram of a display screen mounting bracket in one embodiment of this application;

[0023] Figure 5 This is a schematic diagram of a first circuit board and a toggle switch in one embodiment of this application;

[0024] Figure 6 This is a schematic diagram illustrating the fit between the rotating component and the bearing in one embodiment of this application;

[0025] Figure 7 This is a schematic diagram of a knob module in one embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the base module in one embodiment of this application.

[0027] Icons: 100-Knob module; 110-Rotating component; 111-Toggle tooth; 120-Display screen; 130-Display screen mounting bracket; 131-Stud; 132-Boss; 133-Positioning post; 140-First circuit board; 141-Wire; 142-Allowing hole; 143-Positioning hole; 144-Toggle switch; 150-Clip cap; 151-First wire hole; 152-Positioning protrusion; 153-Limiting part; 154-First screw; 160-Bearing; 161-Inner ring; 162-Outer ring; 200-Base module; 210-Panel; 220-Decorative frame; 221-Support part; 222-Positioning groove; 223-Second screw; 224-Second wire hole; 230-Second circuit board; 240-Base plate. Detailed Implementation

[0028] In related technologies, rotary adjustment devices with display functions achieve rotational adjustment through hollow encoders. However, hollow encoders are relatively large in axial direction, resulting in a large axial dimension for the knob module of the rotary adjustment device, which may even occupy part of the space in the base module. Therefore, rotary adjustment devices in related technologies are often thick, which is not conducive to miniaturization. In addition, the knob module in related technologies lacks tactile or audible feedback when turned, resulting in a poor user experience.

[0029] To address at least one deficiency in related technologies, this application provides a knob adjustment device. Rotational adjustment is achieved by actuating a toggle switch mounted on a display component using a toggle tooth disposed inside a rotatable rotating part. Since it does not rely on a hollow encoder, the knob module can be made thinner, which is beneficial for the overall miniaturization of the knob adjustment device.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0036] Figure 1 This is a schematic diagram of a knob adjustment device in one embodiment of this application. Figure 1 As shown, the knob adjustment device provided in this embodiment includes a knob module 100 and a base module 200. The knob module 100 protrudes from the base module 200 for adjustment by turning, while the base module 200 remains fixed during normal use. The knob adjustment device provided in this embodiment can be applied to various devices that require adjustment of operating parameters, including but not limited to washing machines, lamps, air conditioners, automobiles, speakers, televisions, range hoods, and microwave ovens. Specifically, parameters that can be adjusted by turning include, but are not limited to, volume, power, brightness, and mode.

[0037] Figure 2 This is a cross-sectional view of a knob adjustment device in one embodiment of this application; Figure 3 This is an exploded view of a knob adjustment device in one embodiment of this application. Figures 1 to 3 As shown, the knob module 100 of the knob adjustment device provided in this embodiment includes a rotating member 110 and a display component. The display component is used to display relevant information, such as the current value of the parameter adjusted and controlled by the knob adjustment device, or other information for user interaction. The rotating member 110 is sleeved on the outside of the display component and can rotate relative to the display component to achieve adjustment. Optionally, the display component is fixed relative to the base module 200.

[0038] In this embodiment, the display component includes a bracket, a display screen 120, and at least one toggle switch 144 (see...). Figure 5The display screen 120 is mounted on the bracket. The rotating member 110 has a mounting cavity for mounting the display component. The rotating member 110 is sleeved on the outside of the display component and rotatably connected to the bracket, which is connected to the base module 200. The inner wall of the mounting cavity is provided with a plurality of toggle teeth 111 spaced circumferentially along the mounting cavity. The toggle teeth 111 are used to actuate the toggle switch 144 when the rotating member 110 rotates relative to the display component. In this embodiment, the adjustment is achieved by using the toggle teeth 111 to actuate the toggle switch 144, which avoids reliance on a hollow encoder. The toggle switch 144 is smaller in size than a hollow encoder, thus contributing to the miniaturization of the overall knob adjustment device.

[0039] In this embodiment, the display assembly further includes a first circuit board 140, which is connected to a bracket. The display screen 120 is electrically connected to the first circuit board 140, and a toggle switch 144 is connected to the first circuit board 140. In this embodiment, the first circuit board 140 is provided with circuits and components for controlling the display screen 120 to achieve display functions. The toggle switch 144 is connected to the first circuit board 140 and electrically connected to the circuits on the first circuit board 140, thereby realizing the signal output of the toggle switch 144.

[0040] In this embodiment, the bracket includes a display screen mounting bracket 130 and a pressure cover 150. The display screen 120 is connected to the display screen mounting bracket 130, which supports and fixes the display screen 120. The display screen 120, the display screen mounting bracket 130, the first circuit board 140, and the pressure cover 150 are arranged sequentially along the extension direction of the rotation axis of the rotating member 110. The display screen mounting bracket 130 is connected to the pressure cover 150 and clamps the first circuit board 140. The pressure cover 150 is connected to the base module 200, and the rotating member 110 is rotatably connected to the pressure cover 150. In this embodiment, the rotation axis of the rotating member 110 is also the central axis of the knob module 100, and the extension direction of the rotation axis of the rotating member 110 is also the axial direction of the knob module 100. In this embodiment, the display screen mounting bracket 130 and the pressure cover 150 can effectively fix the first circuit board 140, ensuring its reliability.

[0041] Figure 4 This is a schematic diagram of a display screen mounting bracket 130 in one embodiment of this application; Figure 5 This is a schematic diagram of a first circuit board 140 and a toggle switch 144 in one embodiment of this application. Figure 4 and Figure 5As shown, optionally, the first circuit board 140 is provided with a clearance hole 142. A portion of one of the display screen mounting bracket 130 and the pressure cover 150 passes through the clearance hole 142, and the portion passing through the clearance hole 142 is connected to the other of the display screen mounting bracket 130 and the pressure cover 150. Specifically, in this embodiment, the side of the display screen mounting bracket 130 facing away from the display screen 120 is provided with a stud 131 containing internal threads. The stud 131 can pass through the clearance hole 142 on the first circuit board 140, and the pressure cover 150 is connected to the stud 131 by a first screw 154. Further, each stud 131 has a boss 132 on its side, which can abut against the first circuit board 140, thereby maintaining a suitable gap between the first circuit board 140 and the display screen mounting bracket 130. By providing the clearance hole 142 to avoid the stud 131, the structure becomes more compact, and the first circuit board 140 can also be positioned. In this embodiment, the display screen mounting bracket 130 is provided with three studs 131. In other embodiments, the number of studs 131 can be increased or decreased as needed.

[0042] Furthermore, the display screen mounting bracket 130 is also provided with positioning posts 133, and the first circuit board 140 is correspondingly provided with positioning holes 143. The positioning posts 133 and the positioning holes 143 are inserted and engaged, thereby further improving the reliability of the first circuit board 140 relative to the display screen mounting bracket 130. In this embodiment, the display screen mounting bracket 130 is provided with two positioning posts 133, and the first circuit board 140 is provided with two positioning holes 143.

[0043] In this embodiment, the display component includes two toggle switches 144, which are centrally symmetrically arranged with respect to the rotation axis of the rotating member 110. The number of actuating teeth 111 is even and evenly spaced along the circumference of the rotating member 110. This arrangement ensures that both toggle switches 144 are simultaneously actuated by different actuating teeth 111, thereby triggering simultaneously and outputting a signal. Using two toggle switches 144 makes the rotational resistance more balanced, and the rotational resistance is greater than that of a single toggle switch 144, satisfying the user's tactile requirements. In other optional embodiments, the number of toggle switches 144 can be adjusted as needed, for example, only one toggle switch 144 may be provided.

[0044] In this embodiment, the toggle switch 144 includes a fixed part and a swing arm. The swing arm can be pushed by the toggle teeth 111 to swing relative to the fixed part, thereby triggering the toggle switch 144 and causing the toggle switch 144 to output a signal. In this embodiment, the swing arm always tends to return to its initial position, and the distance between two adjacent toggle teeth 111 is greater than the maximum swing distance of the swing arm. In this embodiment, the maximum swing distance of the swing arm refers to the distance the end of the swing arm displaces during the process from the initial position to the swing limit position. Optionally, the swing arm can swing clockwise or counterclockwise from the initial position, so the swing arm can have two swing limit positions. It can be understood that if the distance between the toggle teeth 111 is less than the maximum swing distance of the swing arm, after the swing arm is tossed to the swing limit position by one toggle tooth 111, it cannot completely return to the initial position and will be tossed by the next toggle tooth 111 immediately. This will result in incomplete signal input and output; and the swing arm performing the return motion will directly strike the toggle tooth 111 and transmit it to the user's hand, resulting in a poor feel.

[0045] Figure 6 This is a schematic diagram illustrating the fit between the rotating component 110 and the bearing 160 in one embodiment of this application. Figure 6 As shown, in this embodiment, the knob module 100 further includes a bearing 160. The outer ring 162 of the bearing 160 is fixedly connected to the rotating component 110, and the inner ring 161 of the bearing 160 is fixedly connected to the bracket. By setting the bearing 160, the rotating component 110 can rotate more smoothly. The outer ring 162 of the bearing 160 can be bonded or interference-fitted to the inner side of the rotating component 110. Specifically, one axial end of the outer ring 162 of the bearing 160 abuts against one axial end of the actuating tooth 111 in the knob module 100, so the outer ring 162 of the bearing 160 can rotate together with the rotating component 110. The inner ring 161 of the bearing 160 can be bonded or interference-fitted to the pressure cap 150.

[0046] Please refer to it again. Figure 2 In this embodiment, a limiting part 153 is provided on the bracket, and the limiting part 153 abuts against the end of the inner ring 161 of the bearing 160 away from the base module 200 along the axial direction of the bearing 160. Specifically, the limiting part 153 is provided on the pressure cover 150 and protrudes radially from the outer peripheral surface of the pressure cover 150. By providing the limiting part 153, the axial position of the bearing 160 in the knob module 100 can be restricted, so that the rotating part 110 and the bearing 160 cannot move away from the base module 200.

[0047] Furthermore, a support portion 221 is provided on the base module 200, which abuts against the inner ring 161 of the bearing 160 near the end of the base module 200 along the axial direction of the bearing 160. By providing the support portion 221, the axial position of the bearing 160 in the knob module 100 can be further restricted, preventing the rotating component 110 and the bearing 160 from moving towards the base module 200. Under the cooperative action of the limiting portion 153 and the support portion 221, the axial position of the rotating component 110 and the bearing 160 is fixed.

[0048] Figure 7 This is a schematic diagram of a knob module 100 in one embodiment of this application; Figure 8 This is a schematic diagram of the base module 200 in one embodiment of this application. Figure 7 and Figure 8 As shown, in this embodiment, one of the bracket and the base module 200 is provided with a positioning protrusion 152, and the other is provided with a positioning groove 222. The positioning protrusion 152 and the positioning groove 222 are interlocked. The bracket and the base module 200 are connected by screws (specifically, the second screw 223 in this embodiment). Specifically, the bracket's cover 150 is provided with a positioning protrusion 152, and the base module 200 is provided with a positioning groove 222. Through the cooperation of the positioning protrusion 152 and the positioning groove 222, a pre-positioning function can be achieved when installing the base module 200 and the knob module 100, and the structural stability of the base module 200 and the knob module 100 can also be improved. In this embodiment, there are two positioning protrusions 152, and the two positioning protrusions 152 are different in size. There are also two positioning grooves 222, and the two positioning grooves 222 are different in size, and they can be interlocked with the two positioning protrusions 152 respectively. This setting can play a foolproof role and avoid incorrect installation.

[0049] Furthermore, the pressure cap 150 is provided with a first wire through hole 151, a first circuit board 140, and a second circuit board 230 of the base module 200 (see...). Figure 2 , Figure 3 It is connected by line 141 passing through the first wire hole 151.

[0050] In this embodiment, the base module 200 includes a panel 210, a decorative frame 220, a second circuit board 230, and a base plate 240 arranged sequentially along the axis of the knob module 100. A portion of the decorative frame 220 passes through the clearance area in the middle of the panel 210 and is connected to the cover 150 of the knob module 100 by a second screw 223. Optionally, the second screw 223 is a self-tapping screw. The second circuit board 230 is disposed on the side of the decorative frame 220 opposite to the panel 210 and is clamped and fixed by the decorative frame 220 and the base plate 240. The base plate 240 is connected to the decorative frame 220 by fasteners, for example, the base plate 240 can be connected to the decorative frame 220 by a self-tapping screw.

[0051] In this embodiment, the decorative frame 220 is provided with a second wire hole 224 for the wire 141 to pass through to connect the first circuit board 140 and the second circuit board 230. A support portion 221 is provided on the decorative frame 220, and the support portion 221 is specifically an annular rib.

[0052] Optionally, the panel 210 includes buttons that allow users to perform control operations, such as turning the device on or off. The buttons on the panel 210 can be mechanical buttons or touch buttons.

[0053] When assembling the knob module 100, the bearing 160 can be fixed in the mounting cavity of the rotating part 110 first, and then the display screen bracket 130, the first circuit board 140, and the pressure cover 150 of the display component can be fixedly connected. Then, the display screen 120 can be installed on the display screen bracket 130 by gluing or snapping, thus completing the assembly of the display component. After the display component is assembled, it is embedded in the mounting cavity, and the limiting part 153 of the pressure cover 150 abuts against the inner ring 161 of the bearing 160, thus completing the assembly of the knob module 100. When assembling the base module 200, the panel 210 can be installed on the decorative frame 220 first, and then the positioning protrusion 152 on the knob module 100 can be inserted into the positioning groove 222 on the decorative frame 220 to achieve pre-positioning. Then, the decorative frame 220 and the knob module 100 (specifically the pressure cover 150) can be connected using the second screw 223. Then, the second circuit board 230 is installed into the decorative frame 220, and the base plate 240 is installed into the decorative frame 220 using self-tapping screws, thereby completing the fixing of the base plate 240 and the second circuit board 230, and at the same time completing the assembly of the entire knob adjustment device.

[0054] In the knob adjustment device provided in this application embodiment, the knob module 100 can be made into an independent module to adapt to different base modules 200. The knob module 100 uses a toggle switch 144 instead of a traditional hollow encoder to achieve rotary adjustment, which allows the knob module 100 to have a thinner size, which is beneficial to the overall miniaturization of the device, and does not encroach on the space of the base module 200. The rotating component 110 is rotatably connected to the bracket of the display component through the bearing 160, making the rotational movement of the rotating component 110 relative to the display component more reliable and smooth. Furthermore, when the toggle switch 144 is toggled, it can emit a discontinuous "clicking" sound, and at the same time, it has a certain tactile feedback, which can meet the usage needs of some users as sound and tactile feedback during rotary adjustment.

[0055] In summary, this application provides a knob adjustment device, which includes a knob module 100 and a base module 200. The knob module 100 includes a rotating member 110 and a display component. The display component includes a bracket, a display screen 120, and at least one toggle switch 144. The display screen 120 is disposed on the bracket. The rotating member 110 has a mounting cavity for mounting the display component. The rotating member 110 is sleeved on the outside of the display component and rotatably connected to the bracket. The bracket is connected to the base module 200. The inner wall of the mounting cavity is provided with a plurality of toggle teeth 111 spaced circumferentially along the mounting cavity. The toggle teeth 111 are used to actuate the toggle switch 144 when the rotating member 110 rotates relative to the display component. In this application embodiment, the rotating member 110 can rotate to actuate the toggle switch 144 using the toggle teeth 111, thereby triggering the toggle switch 144 to achieve adjustment. Compared with a hollow encoder, the toggle switch 144 has a smaller size, thus effectively reducing the axial thickness of the knob module 100. In addition, when the rotating part 110 is turned, the toggle switch 144 will be turned by multiple toggle teeth 111 in sequence, producing a discontinuous "click-click-click" sound, which can satisfy some users who have requirements for sound.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A knob adjustment device, characterized in that, The knob module (100) and the base module (200) are provided, the knob module (100) comprises a rotating part (110) and a display assembly, the rotating part (110) has a mounting cavity for mounting the display assembly, the rotating part (110) is sleeved outside the display assembly and is rotationally connected with a support of the display assembly, the support is connected with the base module (200), and the inner wall of the mounting cavity is provided with a plurality of dialing teeth (111) which are arranged at intervals along the circumference of the mounting cavity and are used for dialing the dialing switch (144) when the rotating part (110) rotates relative to the display assembly.

2. The knob adjustment device of claim 1, wherein, The display assembly comprises a first circuit board (140), the display screen (120) is electrically connected with the first circuit board (140), and the dialing switch (144) is connected with the first circuit board (140).

3. The knob adjustment device of claim 2, wherein, The support comprises a display screen fixing frame (130) and a gland (150), the display screen (120) is connected with the display screen fixing frame (130), the display screen (120), the display screen fixing frame (130), the first circuit board (140) and the gland (150) are arranged in the extension direction of the rotation axis of the rotating part (110), the display screen fixing frame (130) is connected with the gland (150) and clamps the first circuit board (140), the gland (150) is connected with the base module (200), and the rotating part (110) is rotationally connected with the gland (150).

4. The knob adjustment device of claim 3, wherein, The first circuit board (140) is provided with a relief hole (142), part of one of the display screen fixing frame (130) and the gland (150) passes through the relief hole (142), and the part passing through the relief hole (142) is connected with the other one of the display screen fixing frame (130) and the gland (150).

5. The knob adjustment device of claim 3, wherein, The gland (150) is provided with a wire passing hole, the base module (200) comprises a second circuit board (230), and the first circuit board (140) and the second circuit board (230) are connected through a wire (141) passing through the wire passing hole.

6. The knob adjustment device of claim 2, wherein, The display assembly comprises two dialing switches (144), the two dialing switches (144) are centrally symmetrically arranged relative to the rotation axis of the rotating part (110), the number of the dialing teeth (111) is even, and the dialing teeth (111) are uniformly and interval arranged along the circumference of the rotating part (110).

7. The knob adjustment device of any one of claims 1 to 6, wherein, The knob module (100) further comprises a bearing (160), the outer ring (162) of the bearing (160) is fixedly connected with the rotating part (110), and the inner ring (161) of the bearing (160) is fixedly connected with the support.

8. The knob adjustment device of claim 7, wherein, The support is provided with a limiting part (153) which abuts against one end of an inner ring (161) of the bearing (160) away from the base module (200) along the axial direction of the bearing (160).

9. The knob adjustment device of claim 8, wherein, The base module (200) is provided with a supporting part (221) which abuts against one end of the inner ring (161) of the bearing (160) close to the base module (200) along the axial direction of the bearing (160).

10. The knob adjustment device of any one of claims 1 to 6, wherein, One of the support and the base module (200) is provided with a positioning protrusion (152), and the other is provided with a positioning groove (222), the positioning protrusion (152) and the positioning groove (222) are inserted and matched, and the support and the base module (200) are connected through screws.

11. The knob adjustment device of any one of claims 1 to 6, wherein, The toggle switch (144) comprises a fixed part and a swing lever, the swing lever can be pushed by the toggle teeth (111) to swing relative to the fixed part, the swing lever always has a tendency to reset to an initial position; the interval between two adjacent toggle teeth (111) is greater than the maximum swing distance of the swing lever, wherein the maximum swing distance of the swing lever refers to the distance of the end displacement of the swing lever in the process from the initial position to the swing limit position.

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