Key type digital adjustable potentiometer

Abstract

The utility model discloses a key type digital adjustable potentiometer, which relates to the field of intelligent control and comprises a shell, a sealing cover is mounted on the shell, the bottom of the sealing cover is in threaded connection with a plurality of key bodies through a mounting frame, and key caps of the key bodies penetrate through holes formed in the sealing cover; a leading-out end, an MCU and a resistor body are arranged in the shell, the key body is electrically connected with the MCU, and the MCU is electrically connected with the resistor body. The key has the beneficial effects that a plurality of key bodies are arranged, and each key body corresponds to different output parameters, so that a user can find the required output parameters by one key in the use process, then key control on equipment is realized, a knob type potentiometer is perfectly replaced, the use of the user is facilitated, and the user experience is improved. According to the technical scheme, a more convenient and accurate control mode is provided for a specific application scene, and the output parameters corresponding to the key body can be easily updated or modified through programming control so as to adapt to new use requirements or technical upgrading.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent control, in particular to a button-type digital adjustable potentiometer. Background Art

[0002] Traditional potentiometers are knob-type, which are adjusted by rotating to control the device. In some motor control applications, knob potentiometers cannot achieve precise control. Users may adjust the setting too much or too little, and need to rotate the potentiometer multiple times to find the appropriate device output parameters.

[0003] In addition, existing potentiometers also have the risk of accidental touch. If a worker accidentally touches the operating part of the potentiometer, it will disrupt the running equipment and may even cause serious production accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a push-button digital adjustable potentiometer in order to solve the above problems, as described below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a button-type digital adjustable potentiometer, comprising a housing, a sealing cover mounted on the housing, a plurality of button bodies being threadedly connected to the bottom of the sealing cover via a mounting frame, and key caps of the button bodies passing through openings provided on the sealing cover;

[0007] The housing is provided with a lead-out terminal, an MCU, and a resistor, the button body is electrically connected to the MCU, the MCU is electrically connected to the resistor, and the resistor is electrically connected to the lead-out terminal;

[0008] A clamping assembly is provided at the bottom of the sealing cover for fixing the keycap of the key body.

[0009] With the above-mentioned push-button digital adjustable potentiometer, each button body has a different function, and the function of the button body can be adjusted by programming the MCU. By setting multiple button bodies, the control function of the potentiometer is enriched. After the device is adjusted, the keycap of the button body is fixed by the clamping component so that the keycap cannot be pressed, thereby avoiding accidental touch and affecting the use of the device.

[0010] If a key body is damaged, the damaged key body can be separated from the mounting frame by rotating it, thereby facilitating replacement of the damaged key body.

[0011] Preferably, a dust cover is provided on the upper side of the sealing cover for covering the entire keycap of the key body.

[0012] Preferably, the dust cover is made of a flexible transparent material, the key cap is made of a transparent material, and a key light is provided inside the key cap, and the key light is electrically connected to the key body.

[0013] Preferably, a lug plate is provided at the bottom of the shell.

[0014] Preferably, the lead-out end passes through the side wall of the shell.

[0015] Preferably, the button bodies are divided into two rows according to the number, there are two clamping assemblies, and the two clamping assemblies correspond to the two rows of button bodies respectively.

[0016] Preferably, the clamping assembly includes two fixed arms, and the opposite surfaces of the two fixed arms are provided with a plurality of grooves, and the corresponding two grooves can match the keycap surface. A guide rod is slidingly arranged between the two fixed arms, and the guide rod is fixed on the sealing cover, and the length direction of the guide rod is perpendicular to the length direction of the fixed arm. A threaded sleeve is fixed on the end of the fixed arm, and a screw is connected to the inner thread of the threaded sleeve. The end of the screw is rotatably connected to the sealing cover through a bearing seat, and bevel gear 2 is fixed on the opposite ends of the two screws, and the two bevel gears 2 are symmetrical to each other. A rotating shaft is rotatably arranged on the sealing cover, and bevel gear 1 is fixed at one end of the rotating shaft, and a rotating head is fixed at the other end through the side wall of the sealing cover, and the bevel gear 1 is meshed with the two bevel gears 2.

[0017] Preferably, a sealing frame is provided in the sealing cover, and the sealing frame contacts the upper side of the shell, a fixing pin is threadedly connected to the side of the sealing cover, and the fixing pin is designed to be conical at one end corresponding to the shell, a card hole is opened on the side wall of the shell, and the fixing pin is inserted into the card hole.

[0018] The beneficial effects are:

[0019] 1. By setting up multiple button bodies, each button body corresponds to a different output parameter. Users can find the output parameter they need with one click during use, and then realize the button-type control of the device. It perfectly replaces the knob-type potentiometer, facilitates user use, and provides a more convenient and accurate control method for specific application scenarios. In addition, through programming control, the output parameters corresponding to the button body can be easily updated or modified to adapt to new usage needs or technology upgrades;

[0020] 2. The keycap of the key body is fixed by the clamping component so that the keycap cannot be pressed, thereby avoiding accidental touches that affect the use of the equipment, thereby increasing the tolerance for manual errors and improving the safety of equipment operation and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a front view structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the shell of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the sealing cover of the utility model;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model from another perspective;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the mounting frame of the utility model;

[0029] Figure 8 It is a flow chart of the operation of the utility model system.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. Housing; 2. Sealing cover; 3. Lead terminal; 4. Dust cover; 5. Fixing pin; 6. Ear plate; 7. Clamping hole; 8. MCU; 9. Resistor; 10. Sealing frame; 11. Mounting frame; 12. Key body; 13. Clamping assembly; 14. Keycap; 15. Fixed arm; 16. Groove; 17. Guide rod; 18. Screw; 19. Threaded sleeve; 20. Rotating shaft; 21. Bevel gear 1; 22. Bevel gear 2; 23. Key light. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1-8 As shown, the utility model provides a push-button digital adjustable potentiometer, comprising a housing 1, a sealing cover 2 mounted on the housing 1, a plurality of key bodies 12 being threadedly connected to the bottom of the sealing cover 2 via a mounting bracket 11, and key caps 14 of the key bodies 12 passing through openings provided on the sealing cover 2;

[0034] The housing 1 is provided with a lead-out terminal 3, an MCU 8 and a resistor 9. The button body 12 is electrically connected to the MCU 8, the MCU 8 is electrically connected to the resistor 9, and the resistor 9 is electrically connected to the lead-out terminal 3.

[0035] All the key bodies 12 are connected to the MCU8 respectively, and the signal selection is performed through the MCU8. When different key bodies 12 are pressed, the MCU8 will recognize different signals. After digital signal processing, the MCU8 transmits the signal to the selection circuit through the driving circuit. The selection circuit outputs different resistance value signals according to the signal, and finally outputs different potentials.

[0036] The design uses a transistor as an electronic switch, connecting the emitter of the transistor to the power supply and the signal output terminal, the base to the resistor, and the collector to the ground.

[0037] When a key body 12 is pressed, the key body 12 sends a signal to the MCU8. After digital signal processing, the MCU8 transmits the resistance signal to the digital selection circuit. The input signal gives the transistor a high level. At this time, current flows through the base, and a larger amplified current flows through the collector, so a signal is output to the potentiometer.

[0038] When the other button bodies 12 are not pressed, no current flows through the collector, so the potentiometer does not receive a signal. When the switch button is pressed, the current no longer flows through the original transistor, but flows through the new transistor, thus completing the gear shift operation;

[0039] A clamping assembly 13 is provided at the bottom of the sealing cover 2 for fixing the keycap 14 of the key body 12 .

[0040] As an optional embodiment, a dust cover 4 is provided on the upper side of the sealing cover 2 for covering the keycaps 14 of the entire key body 12 . The provision of the dust cover 4 can prevent dust from entering the interior of the key body 12 .

[0041] The dust cover 4 is made of a flexible transparent material, the key cap 14 is made of a transparent material, and a transparent silicone film can be selected. A key light 23 is provided in the key cap 14 , and the key light 23 is electrically connected to the key body 12 .

[0042] The bottom of the housing 1 is provided with a lug plate 6, which facilitates fixing the housing 1 with screws.

[0043] The lead-out terminal 3 passes through the side wall of the housing 1 and is used for electrically connecting to the controlled electric actuator.

[0044] The key bodies 12 are divided into two rows according to the number. There are two clamping assemblies 13 , and the two clamping assemblies 13 correspond to the two rows of key bodies 12 respectively.

[0045] The clamping assembly 13 includes two fixed arms 15. The opposite surfaces of the two fixed arms 15 are provided with a plurality of grooves 16, and the corresponding two grooves 16 can match the surface of the keycap 14. A guide rod 17 is slidably provided between the two fixed arms 15. The guide rod 17 is fixed on the sealing cover 2, and the length direction of the guide rod 17 is perpendicular to the length direction of the fixed arm 15. A threaded sleeve 19 is fixed to the end of the fixed arm 15, and a screw 18 is connected to the internal thread of the threaded sleeve 19. The end of the screw 18 is rotatably connected to the sealing cover 2 through a bearing seat, and the opposite ends of the two screws 18 are fixed with bevel gears 22, and the two bevel gears 22 are symmetrical to each other. A rotating shaft 20 is rotatably provided on the sealing cover 2, and a bevel gear 1 21 is fixed to one end of the rotating shaft 20, and the other end passes through the side wall of the sealing cover 2 and is fixed with a rotating head. The bevel gear 1 21 is meshed with the two bevel gears 22;

[0046] The rotating head is located outside the sealing cover 2. The bevel gear 1 21 can be rotated through the rotating head and the rotating shaft 20. The bevel gear 1 21 cooperates with the two bevel gears 2 22 to make the two screws 18 rotate in opposite directions. The two screws 18, the two threaded sleeves 19 and the guide rod 17 cooperate to drive the two fixed arms 15 to approach each other. The keycap 14 can be fixed by the two fixed arms 15. The provision of the groove 16 can improve the stability of the fixed arm 15 in fixing the keycap 14.

[0047] A sealing frame 10 is provided in the sealing cover 2, and the sealing frame 10 is in contact with the upper side of the housing 1. A fixing pin 5 is threadedly connected to the side surface of the sealing cover 2, and the fixing pin 5 is designed to be conical at one end corresponding to the housing 1. A card hole 7 is provided on the side wall of the housing 1, and the fixing pin 5 is inserted into the card hole 7. The sealing cover 2 can be fixed to the housing 1 by cooperating with the card hole 7. By rotating the fixing pin 5 to disengage it from the card hole 7, the sealing cover 2 can be removed from the housing 1, making it easy to disassemble the sealing cover 2.

[0048] With the above structure, each key body 12 has a different function, and the function of the key body 12 can be adjusted by programming the MCU 8. By providing multiple key bodies 12, the control function of the potentiometer is enriched. After the device is adjusted, the key cap 14 of the key body 12 is fixed by the clamping component 13, so that the key cap 14 cannot be pressed, thereby avoiding accidental touches that affect the use of the device.

[0049] If a key body 12 is damaged, the damaged key body 12 can be separated from the mounting bracket 11 by rotating it, thereby facilitating replacement of the damaged key body 12 .

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A push-button digital adjustable potentiometer, characterized in that: The invention comprises a housing (1), a sealing cover (2) is installed on the housing (1), a plurality of key bodies (12) are threadedly connected to the bottom of the sealing cover (2) via a mounting frame (11), and key caps (14) of the key bodies (12) pass through openings provided on the sealing cover (2); The housing (1) is provided with a lead-out terminal (3), an MCU (8) and a resistor (9); the button body (12) is electrically connected to the MCU (8); the MCU (8) is electrically connected to the resistor (9); and the resistor (9) is electrically connected to the lead-out terminal (3); A clamping assembly (13) is provided at the bottom of the sealing cover (2) for fixing the key cap (14) of the key body (12).

2. The push-button digital adjustable potentiometer according to claim 1, characterized in that: A dust cover (4) is provided on the upper side of the sealing cover (2) for covering the entire key cap (14) of the key body (12).

3. The push-button digital adjustable potentiometer according to claim 2, characterized in that: The dust cover (4) is made of a flexible transparent material, the key cap (14) is made of a transparent material, and a key light (23) is provided in the key cap (14), and the key light (23) is electrically connected to the key body (12).

4. The push-button digital adjustable potentiometer according to claim 1, characterized in that: The bottom of the housing (1) is provided with an ear plate (6).

5. The push-button digital adjustable potentiometer according to claim 1, characterized in that: The lead-out end (3) passes through the side wall of the housing (1).

6. The push-button digital adjustable potentiometer according to claim 1, characterized in that: The button bodies (12) are divided into two rows according to the number. There are two clamping assemblies (13), and the two clamping assemblies (13) correspond to the two rows of button bodies (12) respectively.

7. The push-button digital adjustable potentiometer according to claim 6, characterized in that: The clamping assembly (13) includes two fixed arms (15), and the opposite surfaces of the two fixed arms (15) are provided with a plurality of grooves (16), and the corresponding two grooves (16) can match the surface of the key cap (14). A guide rod (17) is slidably provided between the two fixed arms (15), and the guide rod (17) is fixed on the sealing cover (2), and the length direction of the guide rod (17) is perpendicular to the length direction of the fixed arm (15). A threaded sleeve (19) is fixed at the end of the fixed arm (15), and the threaded sleeve ( 19) is internally threaded with a screw rod (18), the end of the screw rod (18) is rotatably connected to the sealing cover (2) through a bearing seat, and the opposite ends of the two screw rods (18) are fixed with bevel gears (22), and the two bevel gears (22) are symmetrical to each other. A rotating shaft (20) is rotatably provided on the sealing cover (2), one end of the rotating shaft (20) is fixed with bevel gear (21), and the other end passes through the side wall of the sealing cover (2) and is fixed with a rotating head, and the bevel gear (21) is meshed with the two bevel gears (22).

8. The push-button digital adjustable potentiometer according to claim 1, characterized in that: A sealing frame (10) is provided in the sealing cover (2), and the sealing frame (10) contacts the upper side of the housing (1). A fixing pin (5) is threadedly connected to the side of the sealing cover (2), and one end of the fixing pin (5) corresponding to the housing (1) is designed to be conical. A clamping hole (7) is provided on the side wall of the housing (1), and the fixing pin (5) penetrates the clamping hole (7).

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