Rotary controller of household electrical appliance

Abstract

The utility model discloses a rotary controller of a household appliance, which relates to the technical field of controllers and comprises a bottom plate, the upper end of the bottom plate is movably connected with a rotary adjusting assembly, the lower end of the bottom plate is fixedly provided with a heat dissipation assembly, and the top of the rotary adjusting assembly is fixedly provided with a key command assembly. According to the rotary controller of the household electrical appliance, the rotation direction of a user can be automatically identified through the rotary adjusting assembly, and + and-commands can be input according to anticlockwise or clockwise rotation. The structure is more visual and is suitable for most people. The heat dissipation assembly can dissipate heat of the circuit board when the circuit board works, so that the circuit board can be prevented from being overheated. Meanwhile, a battery pack of the controller is generally installed at the bottom of a circuit board, when replacement or maintenance is needed, the top frame can be integrally detached by screwing off four bolts, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of controller technology, and in particular to a rotary controller for household appliances. Background Technology

[0002] Modern residential homes are equipped with a variety of household appliances, such as air conditioners, fans, water heaters, and refrigerators. These appliances that require adjustment generally need to be equipped with controllers. However, in existing controllers, the "+" and "-" command buttons are mixed with other function buttons, resulting in a dense layout of multiple buttons on the front of the controller, which easily leads to accidental touches. Based on this, a rotary controller is proposed.

[0003] Chinese patent document CN209249356U discloses a rotary controller for household appliances, which includes a housing, a display panel, and multiple buttons. The housing includes an insert and a disc. The display panel is located at the center of the disc's circular surface, and the multiple buttons are arranged at equal intervals around the display panel. The disc is fitted with a rotating ring for inputting "+" and "-" commands. This rotary controller for household appliances features a reasonable layout and dispersed buttons, thereby reducing the possibility of accidental touches. It also distinguishes between frequently used and infrequently used commands, achieving a more convenient operation.

[0004] The existing technology has the following problems: In the above-mentioned device, when the rotating ring rotates, the triangular protrusions on its inner side will cause the elastic rubber strip to swing back and forth and contact the contact switches on both sides to identify whether the rotating ring rotates clockwise or counterclockwise. However, users can only judge the display of "+" and "-" commands by looking at the display screen, which is not intuitive enough. It is not suitable for some elderly people with presbyopia and young children. Secondly, in the above-mentioned device, the circuit board is fixed by internal threaded posts and screws, which has poor heat dissipation and can easily affect its service life. Utility Model Content

[0005] This invention provides a rotary controller for household appliances to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A rotary controller for a household appliance includes a base plate, a rotary adjustment assembly movably connected to the upper end of the base plate, a heat dissipation assembly fixedly installed at the lower end of the base plate, and a button command assembly fixedly installed on the top of the rotary adjustment assembly.

[0008] The rotary adjustment assembly includes a circuit board. A ring-shaped heat sink is fixedly installed at the lower edge of the circuit board. The lower end of the heat sink is fixedly installed at the upper end of the base plate. A mounting frame is fixedly installed at the upper end of the circuit board. A ring-shaped rotating ring is slidably connected at the upper edge of the base plate. The top of the inner wall of the rotating ring is slidably connected to the middle of the outer wall of the mounting frame. The circuit board is located inside the rotating ring. Several protrusions arranged in a ring are fixedly installed at the bottom of the inner wall of the rotating ring. A sliding sleeve is fixedly installed at the upper right edge of the circuit board. An elastic sliding rod is slidably connected to the inner wall of the sliding sleeve. A contact ball with several matching protrusions is slidably connected to the end of the elastic sliding rod away from the axis of the circuit board. A contact switch with a matching elastic sliding rod is fixedly installed on the left side of the inner wall of the sliding sleeve. An encoder is fixedly installed on the rear side of the inner wall of the rotating ring. A microcontroller is fixedly installed in the middle of the upper end of the circuit board. Indicator lights are fixedly installed on both the left and right sides of the upper end of the mounting frame.

[0009] The heat dissipation assembly includes a top frame, and a through groove is provided in the middle of the upper end of the base plate. The through groove is located inside the circuit board. The outer wall of the top frame is slidably connected to the inner wall of the through groove. A circular filter plate is fixedly installed on the inner wall of the top frame. A fixing mechanism is fixedly installed at the lower end of the top frame. The top frame can be movably connected to the base plate through the fixing mechanism.

[0010] Preferably, the output terminal of the contact switch is electrically connected to the input terminal of the microcontroller, and the output terminal of the encoder is electrically connected to the input terminal of the microcontroller.

[0011] Preferably, the output terminal of the microcontroller is electrically connected to the input terminals of the two indicator lights.

[0012] Preferably, the fixing mechanism includes four connecting brackets, the upper ends of the four connecting brackets are fixedly installed at the lower edge of the top frame, and the lower end of each of the four connecting brackets is threaded with a bolt penetrating the bottom of the four connecting brackets on the side away from the axis of the circuit board. The lower edge of the base plate has four threaded holes arranged in a ring and matched with four bolts.

[0013] Preferably, a plurality of heat sinks arranged in a ring are fixedly installed on the upper end of the top frame.

[0014] Preferably, the button command component includes a plurality of receiving sleeves, the lower ends of which are fixedly connected to the upper edge of the circuit board, output blocks are fixedly installed at the bottom of the inner cavity of each of the plurality of receiving sleeves, the upper ends of which are fixedly installed to the top of the inner wall of the mounting frame, and fixing plates are fixedly installed at the bottom of the inner wall of each of the plurality of receiving sleeves. A moving rod is slidably connected to the upper end of each of the fixing plates, penetrating the top of the mounting frame and the top of the fixing plates. A contact plate matching a plurality of output blocks is fixedly installed at the lower end of each of the moving rods, and buttons are fixedly installed at the upper end of each of the moving rods. A moving groove matching a plurality of buttons is provided at the upper edge of the mounting frame.

[0015] Preferably, damping blocks are fixedly installed at the lower ends of the plurality of fixed plates, and elastic elements are movably sleeved on the bottom of the outer walls of the plurality of movable rods, with the upper ends of the plurality of elastic elements fixedly connected to the lower ends of the plurality of damping blocks.

[0016] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0017] 1. This utility model provides a rotary controller for household appliances. Through the cooperation of a circuit board, heat sink, mounting frame, rotating ring, protrusion, sliding sleeve, elastic sliding rod, contact ball, contact switch, encoder, microcontroller, and indicator lights, it can automatically identify the direction of rotation by the user and input "+" or "-" commands based on whether the rotation is clockwise or counterclockwise. When the rotating ring rotates, the protrusion continuously contacts the contact ball, pushing the elastic sliding rod to slide within the sliding sleeve. This sliding action is sensed by the contact switch and converted into an electrical signal input to the microcontroller. Simultaneously, the encoder accurately measures the rotation direction of the rotating ring and transmits this information to the microcontroller. The microcontroller receives signals from the contact switch and encoder, processes them, and outputs corresponding control commands according to a preset program. The control commands directly control the state of the two indicator lights; flashing different colors on the two indicator lights represent "+" and "-" commands, respectively. This structure is more intuitive, suitable for most people, and eliminates the need for a display screen, saving costs.

[0018] 2. This utility model provides a rotary controller for household appliances. Through the cooperation of the top frame, filter plate, fixing mechanism, and heat sink, the controller dissipates heat from the circuit board during operation, preventing overheating. Outside air, filtered by the filter plate, directly contacts the bottom of the circuit board, while the heat sinks effectively absorb heat, thus helping the circuit board dissipate heat. Simultaneously, the battery pack of this controller is generally installed at the bottom of the circuit board. When replacement or maintenance is needed, the top frame can be removed by unscrewing the four bolts, exposing the bottom of the circuit board and improving the convenience of controller maintenance. Attached Figure Description

[0019] Figure 1 This is a top view of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall bottom view of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the rotary adjustment component structure of this utility model;

[0023] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0024] Figure 6 This is a schematic diagram of the heat dissipation component and the button command component of this utility model;

[0025] Figure 7 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the key command component structure of this utility model.

[0027] In the diagram: 1. Base plate; 2. Rotary adjustment assembly; 3. Heat dissipation assembly; 4. Button command assembly; 21. Circuit board; 22. Heat dissipation frame; 23. Mounting frame; 24. Rotating ring; 25. Protrusion; 26. Sliding sleeve; 27. Elastic sliding rod; 28. Contact ball; 29. ​​Contact switch; 210. Encoder; 211. Microcontroller; 212. Indicator light; 31. Top frame; 32. Through slot; 33. Filter plate; 34. Fixing mechanism; 35. Heat sink; 341. Connecting frame; 342. Bolt; 41. Receiving sleeve; 42. Output block; 43. Fixing plate; 44. Moving rod; 45. Contact plate; 46. Elastic element. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] like Figures 1-8 As shown, a rotary controller for a household appliance includes a base plate 1, a rotary adjustment assembly 2 movably connected to the upper end of the base plate 1, a heat dissipation assembly 3 fixedly installed at the lower end of the base plate 1, and a button command assembly 4 fixedly installed on the top of the rotary adjustment assembly 2.

[0030] The rotary adjustment assembly 2 includes a circuit board 21. A ring-shaped heat sink 22 is fixedly mounted on the lower edge of the circuit board 21. The lower end of the heat sink 22 is fixedly mounted to the upper end of the base plate 1. A mounting frame 23 is fixedly mounted on the upper end of the circuit board 21. A ring-shaped rotating ring 24 is slidably connected to the upper edge of the base plate 1. The top of the inner wall of the rotating ring 24 is slidably connected to the middle of the outer wall of the mounting frame 23. The circuit board 21 is located inside the rotating ring 24. Several protrusions 25 arranged in a ring are fixedly mounted on the bottom of the inner wall of the rotating ring 24. A sliding sleeve 26 is fixedly installed on the upper right edge of the circuit board 21. An elastic sliding rod 27 is slidably connected to the inner wall of the sliding sleeve 26. A contact ball 28 with several matching protrusions 25 is rolledly connected to one end of the elastic sliding rod 27 away from the axis of the circuit board 21. A contact switch 29 with matching elastic sliding rod 27 is fixedly installed on the left side of the inner wall of the sliding sleeve 26. An encoder 210 is fixedly installed on the rear side of the inner wall of the rotating ring 24. A microcontroller 211 is fixedly installed in the middle of the upper end of the circuit board 21. Indicator lights 212 are fixedly installed on both the left and right sides of the upper end of the mounting frame 23.

[0031] The heat dissipation assembly 3 includes a top frame 31, and a through groove 32 is provided in the middle of the upper end of the bottom plate 1. The through groove 32 is located inside the circuit board 21. The outer wall of the top frame 31 is slidably connected to the inner wall of the through groove 32. A circular filter plate 33 is fixedly installed on the inner wall of the top frame 31. A fixing mechanism 34 is fixedly installed at the lower end of the top frame 31. The top frame 31 can be movably connected to the bottom plate 1 through the fixing mechanism 34.

[0032] The rotary adjustment component 2 automatically recognizes the direction of rotation by the user, inputting "+" and "-" commands based on whether the rotation is clockwise or counterclockwise. As the rotating ring 24 rotates, the protrusion 25 continuously contacts the contact ball 28, pushing the elastic slide rod 27 to slide within the sliding sleeve 26. This sliding action is sensed by the contact switch 29, converted into an electrical signal input to the microcontroller 211. Simultaneously, the encoder 210 accurately measures the rotation direction of the rotating ring 24 and transmits this information to the microcontroller 211. The microcontroller 211 receives signals from the contact switch 29 and encoder 210, processes them, and outputs corresponding control commands according to a preset program. These control commands directly control the state of the two indicator lights 212; different flashing colors on the two indicator lights represent "+" and "-" commands, respectively. This structure is more intuitive, suitable for most people, and eliminates the need for a display screen, saving costs. The heat dissipation component 3 can dissipate heat from the circuit board 21 during operation, preventing overheating. Outside air, filtered by the filter plate 33, comes into direct contact with the bottom of the circuit board 21, and several heat sinks 35 can fully absorb the heat, thus helping the circuit board 21 dissipate heat. Meanwhile, the battery pack of this controller is generally installed at the bottom of the circuit board 21. When replacement or maintenance is needed, the top frame 31 can be completely removed by unscrewing the four bolts 342, making it highly practical.

[0033] like Figure 3 and Figure 4 As shown, the output terminal of the contact switch 29 is electrically connected to the input terminal of the microcontroller 211, and the output terminal of the encoder 210 is electrically connected to the input terminal of the microcontroller 211.

[0034] The encoder 210 is used to accurately detect the rotation angle and speed of the rotating ring 24 and transmit this signal to the microcontroller 211.

[0035] like Figure 4 As shown, the output terminal of the microcontroller 211 is electrically connected to the input terminals of the two indicator lights 212.

[0036] The microcontroller 211 receives signals from the encoder 210 and the contact switch 29, processes them according to a preset program, and then issues commands to the two indicator lights 212. The two indicator lights 212 display different colors depending on the direction of rotation. For example, when the rotating ring 24 rotates clockwise, the right indicator light 212 flashes green, indicating a "+" input; when the rotating ring 24 rotates counterclockwise, the left indicator light 212 flashes red, indicating a "-" input. The "+" and "-" commands in household appliances generally represent increasing or decreasing volume or number.

[0037] like Figure 7 As shown, the fixing mechanism 34 includes four connecting brackets 341. The upper ends of the four connecting brackets 341 are fixedly installed at the lower edge of the top frame 31. The lower end of the four connecting brackets 341, away from the axis of the circuit board 21, is threaded with bolts 342 that penetrate the bottom of the four connecting brackets 341. The lower edge of the base plate 1 has four threaded holes arranged in a ring and matching four bolts 342.

[0038] When it is necessary to clean the filter plate 33 or process the bottom of the circuit board 21, unscrew the four bolts 342 downwards from their respective threaded holes, and then slide the top frame 31 out of the through slot 32 to expose the bottom of the circuit board 21.

[0039] like Figure 7 As shown, several heat sinks 35 arranged in a ring are fixedly installed on the upper end of the top frame 31.

[0040] Several heat sinks 35 can dissipate heat when the circuit board 21 is working.

[0041] like Figure 8As shown, the button command component 4 includes several receiving sleeves 41. The lower ends of the receiving sleeves 41 are fixedly connected to the upper edge of the circuit board 21. Output blocks 42 are fixedly installed at the bottom of the inner cavity of each receiving sleeve 41. The upper ends of the receiving sleeves 41 are fixedly installed to the top of the inner wall of the mounting frame 23. Fixing plates 43 are fixedly installed at the bottom of the inner wall of each receiving sleeve 41. Moving rods 44 that penetrate the top of the mounting frame 23 and the top of the fixing plates 43 are slidably connected to the upper ends of the fixing plates 43. Contact plates 45 that match several output blocks 42 are fixedly installed at the lower ends of the moving rods 44. Buttons are fixedly installed at the upper ends of the moving rods 44. Moving slots that match several buttons are opened at the upper edge of the mounting frame 23.

[0042] The output terminals of several output blocks 42 are electrically connected to the input terminals of circuit board 21. When a user presses a button, the button moves the contact plate 45 downward via the moving lever 44. When the contact plate 45 contacts the output block 42, it triggers the corresponding circuit on circuit board 21, thereby sending a signal to microcontroller 211 or other related components. Microcontroller 211 executes corresponding commands or functions based on the received signal.

[0043] like Figure 8 As shown, damping blocks are fixedly installed at the lower ends of several fixed plates 43, and elastic elements 46 are movably sleeved on the bottom of the outer walls of several moving rods 44. The upper ends of several elastic elements 46 are fixedly connected to the lower ends of several damping blocks.

[0044] Several elastic elements 46 are springs. When a button is pressed, the moving rod 44 moves downward, compressing the elastic elements 46. Once the pressure on the button is released, the elastic elements 46 use their own restoring force to push the moving rod and the contact plate 45 upward, separating the contact plate 45 from the output block 42. This restoring force ensures that the button automatically returns to its initial position when not pressed, preparing for the next operation.

[0045] The working principle of this utility model is as follows: When adjusting the "+" and "-" signals of household appliances, rotate the rotating ring 24. The protrusion 25 inside it continuously contacts the contact ball 28 and pushes the elastic slide rod 27 to slide within the sliding sleeve 26. This sliding motion is sensed by the contact switch 29 and converted into an electrical signal input to the microcontroller 211. At the same time, the encoder 210 accurately measures the rotation direction of the rotating ring 24 and transmits this information to the microcontroller 211. The microcontroller 211 receives the signals from the contact switch 29 and the encoder 210, processes them, and outputs corresponding control commands according to the preset program. The control commands directly control the state of the two indicator lights 212. When the two indicator lights 212 flash different colors, they represent "+" and "-" commands respectively (e.g., when the rotating ring 24 rotates clockwise, the right indicator light 212 flashes green, indicating "+" input; when the rotating ring 24 rotates counterclockwise, the left indicator light 212 flashes red, indicating "-" input). When the user needs to send commands using buttons, the upper part of the mounting frame 23 is usually pasted with stickers corresponding to each button. When the user presses the corresponding button, the button moves the contact plate 45 downward via the moving rod 44. When the contact plate 45 contacts the output block 42, it triggers the corresponding circuit on the circuit board 21, thereby sending a signal to the microcontroller 211 or other related components. The microcontroller 211 executes the corresponding command or function based on the received signal.

[0046] In both types of instructions mentioned above, the microcontroller 211 encodes the parsed instructions into a format suitable for the wireless communication protocol. The encoded instructions are then sent to the home appliance via the wireless communication module. Upon receiving the instructions, the receiving module in the home appliance decodes them and extracts the control parameters. Based on these parameters, the actuators (such as motors and compressors) in the home appliance perform corresponding operations.

[0047] To clean the filter plate 33 or handle the bottom of the circuit board 21, unscrew the four bolts 342 downwards from their corresponding threaded holes, and then slide the top frame 31 out of the through slot 32, thereby exposing the bottom of the circuit board 21. The battery pack of this type of controller is generally located at the bottom of the circuit board 21. Due to the removability of the top frame 31, the replacement of the battery pack and the cleaning of the filter plate 33 are more convenient.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary controller for a household appliance, comprising a base plate (1), characterized in that: A rotary adjustment assembly (2) is movably connected to the upper end of the base plate (1), a heat dissipation assembly (3) is fixedly installed at the lower end of the base plate (1), and a button command assembly (4) is fixedly installed on the top of the rotary adjustment assembly (2). The rotary adjustment assembly (2) includes a circuit board (21). A ring-shaped heat sink frame (22) is fixedly installed at the lower edge of the circuit board (21). The lower end of the heat sink frame (22) is fixedly installed at the upper end of the base plate (1). A mounting frame (23) is fixedly installed at the upper end of the circuit board (21). A ring-shaped rotating ring (24) is slidably connected at the upper edge of the base plate (1). The top of the inner wall of the rotating ring (24) is slidably connected to the middle of the outer wall of the mounting frame (23). The circuit board (21) is located inside the rotating ring (24). Several protrusions (25) arranged in a ring shape are fixedly installed at the bottom of the inner wall of the rotating ring (24). A sliding sleeve (26) is fixedly installed at the upper right edge of the plate (21). An elastic sliding rod (27) is slidably connected to the inner wall of the sliding sleeve (26). A contact ball (28) with several matching protrusions (25) is rolledly connected to one end of the elastic sliding rod (27) away from the axis of the circuit board (21). A contact switch (29) with matching elastic sliding rod (27) is fixedly installed on the left side of the inner wall of the sliding sleeve (26). An encoder (210) is fixedly installed on the rear side of the inner wall of the rotating ring (24). A microcontroller (211) is fixedly installed in the middle of the upper end of the circuit board (21). Indicator lights (212) are fixedly installed on both the left and right sides of the upper end of the mounting frame (23). The heat dissipation assembly (3) includes a top frame (31), and a through groove (32) is provided in the middle of the upper end of the bottom plate (1). The through groove (32) is located inside the circuit board (21). The outer wall of the top frame (31) is slidably connected to the inner wall of the through groove (32). A circular filter plate (33) is fixedly installed on the inner wall of the top frame (31). A fixing mechanism (34) is fixedly installed at the lower end of the top frame (31). The top frame (31) can be movably connected to the bottom plate (1) through the fixing mechanism (34).

2. A rotary controller for a household appliance according to claim 1, characterized in that: The output terminal of the contact switch (29) is electrically connected to the input terminal of the microcontroller (211), and the output terminal of the encoder (210) is electrically connected to the input terminal of the microcontroller (211).

3. A rotary controller for a household appliance according to claim 1, characterized in that: The output of the microcontroller (211) is electrically connected to the input of the two indicator lights (212).

4. A rotary controller for a household appliance according to claim 1, characterized in that: The fixing mechanism (34) includes four connecting brackets (341). The upper ends of the four connecting brackets (341) are fixedly installed at the lower edge of the top frame (31). The lower end of each of the four connecting brackets (341) away from the axis of the circuit board (21) is threaded with bolts (342) that penetrate the bottom of the four connecting brackets (341). The lower edge of the base plate (1) has four threaded holes arranged in a ring and matched with four bolts (342).

5. A rotary controller for a household appliance according to claim 1, characterized in that: Several heat sinks (35) arranged in a ring are fixedly installed on the upper end of the top frame (31).

6. A rotary controller for a household appliance according to claim 1, characterized in that: The button command component (4) includes several receiving sleeves (41). The lower ends of the several receiving sleeves (41) are fixedly connected to the upper edge of the circuit board (21). Output blocks (42) are fixedly installed at the bottom of the inner cavity of each of the several receiving sleeves (41). The upper ends of the several receiving sleeves (41) are fixedly installed to the top of the inner wall of the mounting frame (23). Fixing plates (43) are fixedly installed at the bottom of the inner wall of each of the several receiving sleeves (41). Moving rods (44) that penetrate the top of the mounting frame (23) and the top of the several fixing plates (43) are slidably connected to the upper ends of the several fixing plates (43). Contact plates (45) that match several output blocks (42) are fixedly installed at the lower ends of the several moving rods (44). Buttons are fixedly installed at the upper ends of the several moving rods (44). Moving slots that match several buttons are opened at the upper edge of the mounting frame (23).

7. A rotary controller for a household appliance according to claim 6, characterized in that: Damping blocks are fixedly installed at the lower ends of several fixed plates (43), and elastic elements (46) are movably sleeved on the bottom of the outer walls of several moving rods (44). The upper ends of several elastic elements (46) are fixedly connected to the lower ends of several damping blocks.

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