Knob switch and electrical equipment

Abstract

The utility model discloses a knob switch which comprises a circuit board, a potentiometer, a rotating assembly and a fixing assembly, the potentiometer is connected to the circuit board, the fixing assembly is fixedly installed on one side of the circuit board, the fixing assembly is provided with at least one containing cavity, a rotating shaft of the potentiometer extends into the containing cavity, and the rotating shaft of the potentiometer extends into the containing cavity. The rotating assembly is arranged on the fixing assembly in a sleeving mode and can rotate relative to the fixing assembly, an inner gear ring is arranged at the position, corresponding to the containing cavity, of the inner side of the rotating assembly, a gear is arranged on a rotating shaft of the potentiometer, the gear is meshed with the inner gear ring on the rotating assembly, and the rotating assembly is arranged on the rotating shaft of the potentiometer. And the rotating shaft of the potentiometer can be driven to rotate by rotating the rotating assembly. According to the utility model, an inner gear meshing transmission structure is adopted, which is helpful for reducing the size of the knob switch and is suitable for installation and use of small-sized electrical equipment.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, specifically a rotary switch and an electrical device using the rotary switch. Background Technology

[0002] Common household electrical appliances, such as electric heating appliances and electric fan appliances, typically have a rotary switch to adjust the output power. These rotary switches are equipped with potentiometers; rotating the switch causes the potentiometer's operating shaft to rotate or slide, thereby changing the potentiometer's resistance and adjusting the output power. However, existing rotary switch mechanisms are complex, resulting in excessively large rotary switches that are unsuitable for installation in small electrical appliances. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a rotary switch with an internal gear meshing transmission structure, which helps to reduce the size of the rotary switch and is suitable for installation and use in small electrical appliances.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A rotary switch includes a circuit board, a potentiometer, a rotating assembly, and a fixing assembly. The potentiometer is connected to the circuit board, and the fixing assembly is fixedly mounted on one side of the circuit board. The fixing assembly has at least one receiving cavity. The rotating shaft of the potentiometer extends into the receiving cavity. The rotating assembly is sleeved on the fixing assembly and is rotatable relative to the fixing assembly. An internal gear ring is provided on the inner side of the rotating assembly corresponding to the receiving cavity. A gear is provided on the rotating shaft of the potentiometer, and the gear meshes with the internal gear ring on the rotating assembly. Rotating the rotating assembly can drive the rotating shaft of the potentiometer to rotate.

[0006] As a further improvement, the rotating assembly includes a first rotating member located at the inner end and a second rotating member located at the outer end, the first rotating member and the second rotating member being detachably connected, and the internal gear ring being located on the first rotating member.

[0007] As a further improvement, the first rotating component has a latching opening at one end facing the second rotating component, and the second rotating component has a latching post at one end facing the first rotating component. The latching post is inserted into the latching opening for engagement.

[0008] As a further improvement, the fixing component includes a fixing frame and a display component, wherein the fixing frame is fixedly mounted on the circuit board and the display component is mounted on the fixing frame.

[0009] As a further improvement, the rotating assembly is provided with a display window, and the display element is exposed in the display window.

[0010] As a further improvement, the display component has a positioning groove on the side facing the mounting bracket, and the end of the mounting bracket facing the display component is embedded in the positioning groove.

[0011] As a further improvement, the side wall of the fixed frame is provided with a limiting step, and one end of the first rotating member abuts against the limiting step.

[0012] As a further improvement, the mounting bracket has a threaded hole at one end facing the circuit board, the rotating shaft of the potentiometer passes through the threaded hole and extends into the receiving cavity, and the potentiometer has a threaded structure on the side wall corresponding to the threaded hole, and the potentiometer is threadedly connected to the threaded hole through the threaded structure.

[0013] This utility model also provides an electrical device, which is equipped with a rotary switch, and the rotary switch is configured as any of the rotary switches described above.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] The rotary switch of this utility model extends the rotating shaft of the potentiometer into the receiving cavity on the fixed component, and sets a gear on the rotating shaft to mesh with the internal gear ring on the inner side of the rotating component to form a transmission structure of internal gear meshing. This effectively utilizes the internal volume of the fixed component without generating extra volume, thereby helping to reduce the size of the rotary switch, and is particularly suitable for installation and use in small electrical equipment.

[0016] The electrical equipment of this invention has the same beneficial effects due to the application of the aforementioned rotary switch. Attached Figure Description

[0017] Figure 1 This is a perspective view of the rotary switch according to an embodiment of the present utility model;

[0018] Figure 2 This is a front sectional view of the rotary switch according to an embodiment of the present utility model;

[0019] Figure 3 This is a top sectional view of the rotary switch according to an embodiment of the present invention.

[0020] Figure label:

[0021] Circuit board 1, potentiometer 2, fixing component 3, rotating component 4, gear 5, rotating shaft 21, fixing bracket 31, display component 32, receiving cavity 33, first rotating component 41, second rotating component 42, limiting step 311, threaded hole 312, positioning groove 321, snap-fit ​​opening 411, snap-fit ​​post 421. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that if terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] like Figure 1-3As shown, a rotary switch includes a circuit board 1, a potentiometer 2, a rotating assembly 4, and a fixing assembly 3. The potentiometer 2 is connected to the circuit board 1. The fixing assembly 3 is fixedly installed on one side of the circuit board 1, and the fixing assembly 3 has at least one receiving cavity 33. The rotating shaft 21 of the potentiometer 2 extends into the receiving cavity 33. The rotating assembly 4 is sleeved on the fixing assembly 3 and is rotatable relative to the fixing assembly 3. An internal gear ring is provided on the inner side of the rotating assembly 4 corresponding to the position of the receiving cavity 33. A gear 5 is provided on the rotating shaft 21 of the potentiometer 2. The gear 5 meshes with the internal gear ring on the rotating assembly 4. Rotating the rotating assembly 4 can drive the rotating shaft 21 of the potentiometer 2 to rotate.

[0026] As a further improvement, the rotating assembly 4 includes a first rotating component 41 located at the inner end and a second rotating component 42 located at the outer end. The first rotating component 41 and the second rotating component 42 are detachably connected, and the internal gear ring is located on the first rotating component 41. By setting the rotating assembly 4 as two components, the first rotating component 41 and the second rotating component 42, it facilitates processing and manufacturing, simplifies the mold structure, and makes demolding easier.

[0027] As a further improvement, the first rotating member 41 has a latching opening 411 at the end facing the second rotating member 42, and the second rotating member 42 has a latching post 421 at the end facing the first rotating member 41. The latching post 421 is inserted into the latching opening 411 for engagement. This common latching structure of the latching opening 411 and latching post 421 facilitates installation and disassembly.

[0028] As a further improvement, the fixing component 3 includes a fixing frame 31 and a display element 32. The fixing frame 31 is fixedly mounted on the circuit board 1, and the display element 32 is mounted on the fixing frame 31. The display element 32 is used to display the current adjustment value. By placing the display element 32 on the rotary switch, there is no need to set up a separate display component. This not only makes the structure more aesthetically pleasing but also makes full use of the limited space, making the electrical equipment structure more compact and aesthetically pleasing.

[0029] As a further improvement, the rotating component 4 is provided with a display window, and the display element 32 is exposed in the display window.

[0030] As a further improvement, the display component 32 is provided with a positioning groove 321 on the side facing the fixing frame 31, and the end of the fixing frame 31 facing the display component 32 is embedded in the positioning groove 321.

[0031] As a further improvement, the side wall of the fixing frame 31 is provided with a limiting step 311, and one end of the first rotating member 41 abuts against the limiting step 311.

[0032] As a further improvement, the mounting bracket 31 has a threaded hole 312 at one end facing the circuit board 1. The rotating shaft 21 of the potentiometer 2 passes through the threaded hole 312 and extends into the receiving cavity 33. The potentiometer 2 has a threaded structure on the side wall corresponding to the threaded hole 312, and the potentiometer 2 is threadedly connected to the threaded hole 312 through the threaded structure. The threaded connection fixes the potentiometer 2, ensuring a more reliable connection between the potentiometer 2 and the circuit board 1.

[0033] This embodiment also provides an electrical appliance, which is equipped with a rotary switch, and the rotary switch is any of the rotary switches described above. The electrical appliance can be an electric heating type such as a rice cooker or an induction cooker, or an electric fan type such as an electric fan, a vacuum cleaner, or a hair dryer.

[0034] The rotary switch of this utility model extends the rotating shaft 21 of the potentiometer 2 into the receiving cavity 33 on the fixed component 3, and sets a gear 5 on the rotating shaft 21 to mesh with the internal gear ring on the inner side of the rotating component 4 to form a transmission structure of internal gear 5 meshing. This effectively utilizes the internal volume of the fixed component 3 without generating extra volume, thereby helping to reduce the size of the rotary switch, and is particularly suitable for installation and use in small electrical equipment.

[0035] It should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary switch characterized by comprising: The potentiometer is connected to the circuit board, the fixed assembly is fixedly installed on one side of the circuit board, and at least one accommodating cavity is arranged on the fixed assembly, the rotating shaft of the potentiometer extends into the accommodating cavity, the rotating assembly is sleeved on the fixed assembly, and the rotating assembly is rotatable relative to the fixed assembly, an inner gear ring is arranged on the inner side of the rotating assembly corresponding to the position of the accommodating cavity, a gear is arranged on the rotating shaft of the potentiometer, the gear is engaged with the inner gear ring on the rotating assembly, and rotating the rotating assembly can drive the rotating shaft of the potentiometer to rotate.

2. The rotary switch according to claim 1, wherein The rotating assembly comprises a first rotating member at an inner end and a second rotating member at an outer end, the first rotating member is detachably connected with the second rotating member, and the inner gear ring is arranged on the first rotating member.

3. The rotary switch according to claim 2, wherein One end of the first rotating member towards the second rotating member is provided with a buckle opening, one end of the second rotating member towards the first rotating member is provided with a buckle column, and the buckle column is inserted into the buckle opening to be connected.

4. The rotary switch according to claim 2 or 3, characterized in that The fixed assembly comprises a fixed frame and a display member, the fixed frame is fixedly installed on the circuit board, and the display member is installed on the fixed frame.

5. The rotary switch according to claim 4, wherein A display window is arranged on the rotating assembly, and the display member is exposed in the display window.

6. The rotary switch of claim 4, wherein One side of the display member towards the fixed frame is provided with a positioning groove, and one end of the fixed frame towards the display member is embedded in the positioning groove.

7. The rotary switch of claim 4, wherein A limiting step is arranged on the side wall of the fixed frame, and one end of the first rotating member abuts against the limiting step.

8. The rotary switch of claim 4, wherein One end of the fixed frame towards the circuit board is provided with a threaded hole, the rotating shaft of the potentiometer extends into the accommodating cavity through the threaded hole, a threaded structure is arranged on the side wall of the potentiometer corresponding to the threaded hole, and the potentiometer is threadedly connected with the threaded hole through the threaded structure.

9. An electric appliance provided with a knob switch, characterized by The knob switch is the knob switch as claimed in any one of claims 1-8.

Images