Electromagnetic induction type rocker potentiometer

Abstract

The utility model discloses an electromagnetic induction type rocker potentiometer which comprises a bottom shell, a magnetic induction circuit board, a base, a sliding disc, a spring, a rocker, an upper rocker arm, a lower rocker arm and an upper cover, the magnetic induction circuit board with the magnetic induction module is installed on the lower side of the base, the permanent magnet is installed at the lower end of the rocker or one end of the upper rocker and one end of the lower rocker, and the permanent magnet is matched with the magnetic induction module in a magnetic induction mode. The magnetic induction module inducts the change of the magnetic field intensity of the permanent magnet and outputs induction signals, the size is small, the cost is low, and the induction accuracy is high.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometers, in particular to an electromagnetic induction rocker potentiometer. Background Art

[0002] The rocker potentiometer is a variable potentiometer suitable for the rocker control handle of game consoles, drones, etc. By shaking the rocker of the rocker potentiometer and adjusting the resistance value through the brush mechanism of the potentiometer, the state change of the internal related components of the game console, drone, etc. can be controlled. The structure of the rocker potentiometer refers to the applicant's patent 202221266852.1, and its patent name is a rocker potentiometer with a central positioning slide, which includes a base, a slide, a rocker, a lower rocker arm, an upper rocker arm, an iron shell, and a first potentiometer group The base comprises a cavity, a sliding plate is installed in the cavity of the base, a rocker is installed on the sliding plate, an iron shell is installed outside the base, a lower rocker arm and an upper rocker arm are respectively mounted on the rocker, the upper rocker arm is located on the upper side of the lower rocker arm, and both ends of the lower rocker arm and the upper rocker arm extend outward from the iron shell and the base respectively; the first potentiometer assembly and the second potentiometer assembly are respectively installed on the iron shell, one end of the lower rocker arm is rotatably inserted in the first potentiometer assembly, and one end of the upper rocker arm is rotatably inserted in the second potentiometer assembly.

[0003] The structure of the first potentiometer component and the second potentiometer component of the above patent is composed of a resistor and a rotating or sliding system, that is, a moving contact moves on the resistor to obtain a partial voltage output. This potentiometer component uses a carbon film or a resistance wire structure, and the contact needs to contact and rub against the carbon film to realize the detection of different positions of the potentiometer. It has the following shortcomings: (1) The carbon film has a short wear life and large production errors; (2) Due to the friction of the junction contact, contact interference noise will be generated when the position changes. The electromagnetic induction potentiometer overcomes the shortcomings of the above contact structure potentiometer, uses a permanent magnet as a rotating or sliding component, and uses a linear Hall sensor to detect the position of the permanent magnet in real time. When adjusting the position, the electromagnetic induction potentiometer is contact-free, wear-free, and has no noise interference during adjustment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an electromagnetic induction rocker potentiometer in view of the deficiencies of the above-mentioned prior art. The electromagnetic induction rocker potentiometer installs a magnetic induction circuit board with a magnetic induction module on the lower side of a base, and installs a permanent magnet at the lower end of the rocker or one end of an upper rocker arm and a lower rocker arm. The permanent magnet cooperates with the magnetic induction module through magnetic induction. As the rocker or the upper rocker arm and the lower rocker arm shake, the magnetic induction module senses the change in the magnetic field strength of the permanent magnet and outputs an induction signal. The utility model has a small size, low cost and high induction accuracy.

[0005] In order to solve the above technical problems, the first technical solution of the utility model is: an electromagnetic induction rocker potentiometer, including a bottom shell, a magnetic induction circuit board, a base, a sliding disk, a spring, a rocker, an upper rocker arm, a lower rocker arm and an upper cover; a magnetic induction module is provided in the middle of the magnetic induction circuit board, the base is installed on the upper side of the magnetic induction circuit board, the base is provided with a cavity, the magnetic induction module extends into the cavity, the sliding disk can be installed in the cavity of the base in a liftable manner, the middle of the sliding disk is provided with a sliding disk middle hole, and the position of the sliding disk middle hole and the magnetic induction module are opposite to each other up and down; a cavity spring seat is provided on the periphery of the cavity of the base, a sliding disk spring seat is provided on the lower side of the sliding disk, and the lower end of the spring is installed On the cavity spring seat, the upper end of the spring is installed under the sliding plate spring seat; the cavity side of the base is connected with a plurality of guide feet, the inner wall of the guide feet is provided with a guide groove, and the side of the sliding plate is connected with a guide strip corresponding to the guide groove and slidingly matched with the guide groove; the rocker is installed on the sliding plate, the lower end of the rocker passes through the hole in the sliding plate, and the lower end of the rocker is installed with a permanent magnet, and the permanent magnet is magnetically inductively matched with the magnetic induction module; the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover from top to bottom in sequence, the rocker passes through the upper cover and is connected to the upper rocker arm and the lower rocker arm; the bottom shell is installed on the lower side of the magnetic induction circuit board, and the end of the bottom shell is provided with a bottom shell connector for connecting the upper cover.

[0006] Preferably, the upper rocker arm includes an upper rocker arm body and an upper rocker arm shaft connected to both ends of the upper rocker arm body, the upper rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the upper rocker arm body is provided with an upper rocker arm middle hole for the rocker rod to pass through, and the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker rod.

[0007] Preferably, the lower rocker arm comprises a lower rocker arm body and a lower rocker arm shaft connected to both ends of the lower rocker arm body, the lower rocker arm shaft is rotatably connected to the inner wall of the upper cover, and a pressure block is provided at the lower end of one of the lower rocker arm shafts; a lower rocker arm middle hole is provided in the middle part of the lower rocker arm body for the rocker to pass through, and the inner wall of the lower rocker arm middle hole is rotatably connected to the rocker; a pressure block passing hole is provided at one end of the base, and a button is provided at one end of the magnetic induction circuit board, the pressure block passing hole and the button are opposite to each other in position up and down, and after the pressure block of the lower rocker arm shaft passes downward through the pressure block passing hole, it is pressed and matched with the button.

[0008] Preferably, the magnetic induction module is packaged as an integrated circuit chip, and the permanent magnet is a cylindrical permanent magnet.

[0009] Preferably, the bottom shell connector includes a clamping ring and buckle ears which extend upward and are arranged at both ends of the bottom shell, and a clamping head and a buckle platform are respectively provided at both ends of the upper cover, the clamping ring is snap-fitted with the clamping head, and the buckle ears are bent and buckled onto the buckle platform.

[0010] In order to solve the above technical problems, the second technical solution of the utility model is: an electromagnetic induction rocker potentiometer, including a bottom shell, a magnetic induction circuit board, a base, a sliding disk, a spring, a rocker, an upper rocker arm, a lower rocker arm and an upper cover; a first magnetic induction module and a second magnetic induction module are arranged on the magnetic induction circuit board, the base is installed on the upper side of the magnetic induction circuit board, the base is provided with a cavity, and the sliding disk can be installed in the cavity of the base in a liftable manner; the base is provided with a first through hole and a second through hole, the first magnetic induction module extends into the first through hole, and the second magnetic induction module extends into the second through hole; a cavity spring seat is provided on the periphery of the cavity of the base, a sliding disk spring seat is provided on the lower side of the sliding disk, the lower end of the spring is installed on the cavity spring seat, and the upper end of the spring is installed on The sliding plate is below the spring seat of the sliding plate; a plurality of guide feet are connected to the side of the cavity of the base, and the inner wall of the guide foot is provided with a guide groove, and the side of the sliding plate is connected with a guide strip corresponding to the guide groove and slidingly matched; the rocker is installed on the sliding plate, and the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover in sequence from top to bottom, and the rocker passes through the upper cover and is connected to the upper rocker arm and the lower rocker arm; a first permanent magnet is provided at one end of the upper rocker arm, and the positions of the first permanent magnet and the first magnetic induction module are opposite to each other and electromagnetic induction cooperate with each other; a second permanent magnet is provided at one end of the lower rocker arm, and the positions of the second permanent magnet and the second magnetic induction module are opposite to each other and electromagnetic induction cooperate with each other; the bottom shell is installed on the lower side of the magnetic induction circuit board, and the end of the bottom shell is provided with a bottom shell connector for connecting the upper cover.

[0011] Preferably, the upper rocker arm includes an upper rocker arm body and an upper rocker arm shaft connected to both ends of the upper rocker arm body, the upper rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the upper rocker arm body is provided with an upper rocker arm middle hole for the rocker arm to pass through, the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker arm, a first magnet positioning block is provided at the lower end of one of the upper rocker arm shafts, and the first permanent magnet is installed in the first magnet positioning block.

[0012] Preferably, the lower rocker arm comprises a lower rocker arm body and a lower rocker arm shaft connected to both ends of the lower rocker arm body, the lower rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the lower rocker arm body is provided with a lower rocker arm middle hole for the rocker arm to pass through, and the inner wall of the lower rocker arm middle hole is rotatably connected to the rocker arm; a second magnet positioning block is provided at the lower end of one of the upper rocker arm shafts, and the second permanent magnet is installed in the second magnet positioning block; a pressure block is provided at the lower end of the other lower rocker arm shaft, a pressure block through hole is provided at one end of the base, a button is provided at one end of the magnetic induction circuit board, the pressure block through hole is opposite to the position of the button up and down, and after the pressure block of the lower rocker arm shaft passes downward through the pressure block through hole, it is pressed and matched with the button.

[0013] Preferably, the first magnetic induction module and the second magnetic induction module are respectively packaged as integrated circuit chips, and the first permanent magnet and the second permanent magnet are respectively rectangular permanent magnets.

[0014] Preferably, the bottom shell connector includes a clamping ring and buckle ears which extend upward and are arranged at both ends of the bottom shell, and a clamping head and a buckle platform are respectively provided at both ends of the upper cover, the clamping ring is snap-fitted with the clamping head, and the buckle ears are bent and buckled onto the buckle platform.

[0015] The beneficial effect of the first technical solution of the utility model is: the utility model arranges the magnetic induction module in the middle part of the magnetic induction circuit board, and the magnetic induction module extends into the cavity of the base, the rocker is installed on the sliding plate, the lower end of the rocker passes through the hole in the sliding plate, and a permanent magnet is installed at the lower end of the rocker. The positions of the permanent magnet and the magnetic induction module are relative and cooperate with each other by magnetic induction. As the rocker shakes, the magnetic induction module senses the change of the magnetic field strength of the permanent magnet and outputs an induction signal. The utility model has a small size, low cost and high induction accuracy.

[0016] The beneficial effect of the second technical scheme of the utility model is as follows: the utility model is provided with a first magnetic induction module and a second magnetic induction module on the magnetic induction circuit board, and the first magnetic induction module extends into the first through hole of the base, and the second magnetic induction module extends into the second through hole of the base, and the upper rocker arm and the lower rocker arm are sequentially installed on the lower side of the upper cover from top to bottom, the rocker passes through the upper cover and is connected with the upper rocker arm and the lower rocker arm, the first permanent magnet at one end of the upper rocker arm and the first magnetic induction module are positioned opposite to each other in vertical direction and are electromagnetically inductively matched, the second permanent magnet at one end of the lower rocker arm and the second magnetic induction module are positioned opposite to each other in vertical direction and are electromagnetically inductively matched, and as the rocker shakes, the upper rocker arm and the lower rocker arm are driven to shake, so that the first magnetic induction module and the second magnetic induction module sense the changes in the magnetic field strength of the first permanent magnet and the second permanent magnet, and output induction signals, the volume is small, the cost is low, and the induction accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the electromagnetic induction rocker potentiometer shown in the first and second embodiments.

[0018] Figure 2 This is one of the dispersed structure diagrams of the electromagnetic induction rocker potentiometer shown in the first embodiment.

[0019] Figure 3 This is the second decentralized structure diagram of the electromagnetic induction rocker potentiometer shown in the first embodiment.

[0020] Figure 4 This is one of the dispersed structure diagrams of the electromagnetic induction rocker potentiometer shown in the second embodiment.

[0021] Figure 5This is the second decentralized structure diagram of the electromagnetic induction rocker potentiometer shown in the second embodiment. DETAILED DESCRIPTION

[0022] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings. Embodiment 1

[0023] like Figure 1-Figure 3 As shown, the first embodiment of the utility model is an electromagnetic induction rocker potentiometer, including a bottom shell 1, a magnetic induction circuit board 2, a base 3, a sliding plate 4, a spring 5, a rocker 6, an upper rocker arm 7, a lower rocker arm 8 and an upper cover 9; a magnetic induction module 21 is provided in the middle of the magnetic induction circuit board 2, the base 3 is installed on the upper side of the magnetic induction circuit board 2, the base 3 is provided with a cavity 31, the magnetic induction module 21 extends into the cavity 31, the sliding plate 4 can be installed in the cavity 31 of the base 3 in a liftable manner, the sliding plate 4 is provided with a sliding plate middle hole 41 in the middle, and the sliding plate middle hole 41 is opposite to the magnetic induction module 21 in the upper and lower positions; a cavity spring seat 32 is provided on the outer periphery of the cavity 31 of the base 3, a sliding plate spring seat 42 is provided on the lower side of the sliding plate 4, and the lower end of the spring 5 is installed on the cavity spring seat 32, the upper end of the spring 5 is installed under the sliding plate spring seat 42; the side of the cavity 31 of the base 3 is connected with a plurality of guide feet 33, the inner wall of the guide feet 33 is provided with a guide groove 331, and the side of the sliding plate 4 is connected with a guide bar 42 corresponding to the guide groove 331 and slidingly matched; the rocker 6 is installed on the sliding plate 4, the lower end of the rocker 6 passes through the sliding plate middle hole 41, and the lower end of the rocker 6 is installed with a permanent magnet 10, and the permanent magnet 10 is magnetically matched with the magnetic induction module 21; the upper rocker arm 7 and the lower rocker arm 8 are installed on the lower side of the upper cover 9 from top to bottom in sequence, the rocker 6 passes through the upper cover 9 and is connected with the upper rocker arm 7 and the lower rocker arm 8; the bottom shell 1 is installed on the lower side of the magnetic induction circuit board 2, and the end of the bottom shell 1 is provided with a bottom shell connector for connecting the upper cover 9. When a person holds the rocker and shakes it to the side, the bottom of the rocker will press down the sliding plate, and the sliding plate will compress the spring; when the person releases the rocker, the elastic force of the spring is released, pushing the sliding plate up, and then pushing the rocker back to the center and reset. The utility model arranges the magnetic induction module 21 in the middle of the magnetic induction circuit board 2, and the magnetic induction module 21 extends into the cavity 31 of the base 3, the rocker 6 is installed on the sliding plate 4, the lower end of the rocker 6 passes through the hole 41 in the sliding plate, and the lower end of the rocker 6 is installed with a permanent magnet 10, the permanent magnet 10 and the magnetic induction module 21 are relative and magnetically matched, as the rocker 6 shakes, the magnetic induction module 21 senses the change in the magnetic field strength of the permanent magnet 10, and outputs an induction signal, which has a small size, low cost, and high induction accuracy.

[0024] like Figure 1-Figure 3As shown, the upper rocker arm 7 includes an upper rocker arm body 71 and an upper rocker arm shaft 72 connected to both ends of the upper rocker arm body 71, the upper rocker arm shaft 72 is rotatably connected to the inner wall of the upper cover 9, and an upper rocker arm middle hole 73 for the rocker rod 6 to pass through is provided in the middle part of the upper rocker arm body 71, and the inner wall of the upper rocker arm middle hole 73 is rotatably connected to the rocker rod 6. The lower rocker arm 8 includes a lower rocker arm body 81 and a lower rocker arm shaft 82 connected to both ends of the lower rocker arm body 81, the lower rocker arm shaft 82 is rotatably connected to the inner wall of the upper cover 9, and a pressure block 821 is provided at the lower end of one of the lower rocker arm shafts 82; a lower rocker arm middle hole 83 for the rocker 6 to pass through is provided in the middle of the lower rocker arm body 81, and the inner wall of the lower rocker arm middle hole 83 is rotatably connected to the rocker 6; a pressure block through hole 34 is provided at one end of the base 3, and a button 22 is provided at one end of the magnetic induction circuit board 2, and the pressure block through hole 34 is opposite to the button 22 in position up and down, and after the pressure block 821 of the lower rocker arm shaft 82 passes through the pressure block through hole 34 downward, it is pressed and matched with the button 22.

[0025] like Figure 2 and Figure 3 As shown, the magnetic induction module 21 is packaged as an integrated circuit chip, specifically a Hall element, and the permanent magnet 10 is a cylindrical permanent magnet.

[0026] like Figure 1-Figure 3 As shown, the bottom shell connecting member includes a clamping ring 101 and a buckle ear 102 extending upwardly and arranged at both ends of the bottom shell 1, and a clamping head 91 and a buckle platform 92 are respectively provided at both ends of the upper cover 9. The clamping ring 101 is snap-fitted with the clamping head 91, and the buckle ear 102 is buckled on the buckle platform 92 after being bent. Embodiment 2

[0027] like Figure 1 , Figure 4 and Figure 5As shown, the second embodiment of the utility model is an electromagnetic induction rocker potentiometer, including a bottom shell 1, a magnetic induction circuit board 2, a base 3, a sliding plate 4, a spring 5, a rocker 6, an upper rocker arm 7, a lower rocker arm 8 and an upper cover 9; a first magnetic induction module 23 and a second magnetic induction module 24 are arranged on the magnetic induction circuit board 2, the base 3 is mounted on the upper side of the magnetic induction circuit board 2, the base 3 is provided with a cavity 31, and the sliding plate 4 can be lifted and lowered in the cavity 31 of the base 3; the base 3 is provided with a first through hole 35 and a second through hole 36, the first magnetic induction module 23 extends into the first through hole 35, and the second magnetic induction module 24 extends into the second through hole 36; a cavity spring seat 32 is arranged on the outer periphery of the cavity 31 of the base 3, a sliding plate spring seat 42 is arranged on the lower side of the sliding plate 4, the lower end of the spring 5 is mounted on the cavity spring seat 32, and the upper end of the spring 5 is mounted on the sliding plate spring seat The bottom of the bottom shell 1 is provided with a plurality of guide pins 33, and the inner wall of the guide pins 33 is provided with a guide groove 331, and the side of the slide plate 4 is connected with a guide bar 42 corresponding to and slidingly matched with the guide groove 331; the rocker 6 is installed on the slide plate 4, and the upper rocker arm 7 and the lower rocker arm 8 are installed on the lower side of the upper cover 9 from top to bottom in sequence, and the rocker 6 passes through the upper cover 9 and is connected with the upper rocker arm 7 and the lower rocker arm 8; a first permanent magnet 11 is provided at one end of the upper rocker arm 7, and the first permanent magnet 11 and the first magnetic induction module 23 are opposite in position and electromagnetically matched with each other; a second permanent magnet 12 is provided at one end of the lower rocker arm 8, and the second permanent magnet 12 and the second magnetic induction module 24 are opposite in position and electromagnetically matched with each other; the bottom shell 1 is installed on the lower side of the magnetic induction circuit board 2, and the end of the bottom shell 1 is provided with a bottom shell connector for connecting the upper cover 9. When a person holds the joystick and shakes it sideways, the bottom of the joystick will press down the sliding plate, and the sliding plate will compress the spring; when the person releases the joystick, the elastic force of the spring is released, pushing the sliding plate up, and then pushing the joystick back to the center and reset. The utility model is provided with a first magnetic induction module 23 and a second magnetic induction module 24 on a magnetic induction circuit board 2, and the first magnetic induction module 23 extends into a first through hole 35 of a base 3, and the second magnetic induction module 24 extends into a second through hole 36 of the base 3, an upper rocker arm 7 and a lower rocker arm 8 are sequentially installed on the lower side of an upper cover 9 from top to bottom, a rocker 6 passes through the upper cover 9 and is connected with the upper rocker arm 7 and the lower rocker arm 8, a first permanent magnet 11 at one end of the upper rocker arm 7 and a position of the first magnetic induction module 23 are opposite to each other in vertical direction and electromagnetic induction cooperate with each other, a second permanent magnet 12 at one end of the lower rocker arm 8 and a position of the second magnetic induction module 24 are opposite to each other in vertical direction and electromagnetic induction cooperate with each other, with the rocker 6 shaking, the upper rocker arm 7 and the lower rocker arm 8 are driven to shake, so that the first magnetic induction module 23 and the second magnetic induction module 24 sense the change of the magnetic field strength of the first permanent magnet 11 and the second permanent magnet 12, and output an induction signal, the utility model has a small volume, low cost and high induction accuracy.

[0028] like Figure 1 , Figure 4 and Figure 5 As shown, the upper rocker arm 7 includes an upper rocker arm body 71 and an upper rocker arm shaft 72 connected to both ends of the upper rocker arm body 71, the upper rocker arm shaft 72 is rotatably connected to the inner wall of the upper cover 9, the middle part of the upper rocker arm body 71 is provided with an upper rocker arm middle hole 73 for the rocker 6 to pass through, the inner wall of the upper rocker arm middle hole 73 is rotatably connected to the rocker 6, and the lower end of one of the upper rocker arm shafts 72 is provided with a first magnet positioning block 74, and the first permanent magnet 11 is installed in the first magnet positioning block 74. The lower rocker arm 8 includes a lower rocker arm body 81 and a lower rocker arm shaft 82 connected to both ends of the lower rocker arm body 81, the lower rocker arm shaft 82 is rotatably connected to the inner wall of the upper cover 9, the middle part of the lower rocker arm body 81 is provided with a lower rocker arm middle hole 83 for the rocker 6 to pass through, and the inner wall of the lower rocker arm middle hole 83 is rotatably connected to the rocker 6; a second magnet positioning block 84 is provided at the lower end of one of the upper rocker arm shafts 72, and the second permanent magnet 12 is installed in the second magnet positioning block 84; a pressure block 821 is provided at the lower end of the other lower rocker arm shaft 82, a pressure block through hole 34 is provided at one end of the base 3, and a button 22 is provided at one end of the magnetic induction circuit board 2, and the pressure block through hole 34 is opposite to the position of the button 22 up and down, and after the pressure block 821 of the lower rocker arm shaft 82 passes through the pressure block through hole 34 downward, it is pressed and matched with the button 22.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, the first magnetic induction module 23 and the second magnetic induction module 24 are respectively packaged as integrated circuit chips, specifically Hall elements, and the first permanent magnet 11 and the second permanent magnet 12 are respectively rectangular permanent magnets.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, the bottom shell connecting member includes a clamping ring 101 and a buckle ear 102 extending upwardly and arranged at both ends of the bottom shell 1, and a clamping head 91 and a buckle platform 92 are respectively provided at both ends of the upper cover 9. The clamping ring 101 is snap-fitted with the clamping head 91, and the buckle ear 102 is buckled on the buckle platform 92 after being bent.

[0031] It should be noted that the bottom shell 1, base 3, sliding plate 4, spring 5, rocker 6, upper rocker arm 7, lower rocker arm 8 and upper cover 9 in the first and second embodiments of the present invention are of the same structure, and the difference between the first and second embodiments is that the magnetic induction circuit board 2 is different and the permanent magnet is installed in a different position. In this way, all components except the magnetic induction circuit board in the first and second embodiments can be used in common, so as to save production costs.

[0032] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An electromagnetic induction rocker potentiometer, characterized in that: The invention comprises a bottom shell, a magnetic induction circuit board, a base, a sliding plate, a spring, a rocker, an upper rocker arm, a lower rocker arm and an upper cover; a magnetic induction module is arranged in the middle of the magnetic induction circuit board, the base is installed on the upper side of the magnetic induction circuit board, the base is provided with a cavity, the magnetic induction module extends into the cavity, the sliding plate is installed in the cavity of the base in a liftable manner, a sliding plate middle hole is arranged in the middle of the sliding plate, and the sliding plate middle hole is opposite to the position of the magnetic induction module in the upper and lower parts; a cavity spring seat is arranged on the outer periphery of the cavity of the base, a sliding plate spring seat is arranged on the lower side of the sliding plate, the lower end of the spring is installed on the cavity spring seat, and the upper end of the spring is installed on The sliding plate is under the spring seat of the sliding plate; a plurality of guide feet are connected to the side of the cavity of the base, and the inner wall of the guide foot is provided with a guide groove, and the side of the sliding plate is connected with a guide strip corresponding to the guide groove and slidingly matched with the guide groove; the rocker is installed on the sliding plate, and the lower end of the rocker passes through the hole in the sliding plate, and a permanent magnet is installed at the lower end of the rocker, and the permanent magnet cooperates with the magnetic induction module for magnetic induction; the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover from top to bottom in sequence, and the rocker passes through the upper cover and is connected to the upper rocker arm and the lower rocker arm; the bottom shell is installed on the lower side of the magnetic induction circuit board, and the end of the bottom shell is provided with a bottom shell connector for connecting the upper cover.

2. The electromagnetic induction rocker potentiometer according to claim 1, characterized in that: The upper rocker arm includes an upper rocker arm body and an upper rocker arm shaft connected to both ends of the upper rocker arm body, the upper rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the upper rocker arm body is provided with an upper rocker arm middle hole for the rocker rod to pass through, and the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker rod.

3. The electromagnetic induction rocker potentiometer according to claim 2, characterized in that: The lower rocker arm includes a lower rocker arm body and a lower rocker arm shaft connected to both ends of the lower rocker arm body, the lower rocker arm shaft is rotatably connected to the inner wall of the upper cover, and a pressure block is provided at the lower end of one of the lower rocker arm shafts; a lower rocker arm middle hole is provided in the middle of the lower rocker arm body for the rocker to pass through, and the inner wall of the lower rocker arm middle hole is rotatably connected to the rocker; a pressure block passing hole is provided at one end of the base, and a button is provided at one end of the magnetic induction circuit board, the pressure block passing hole and the button are opposite to each other in position, and after the pressure block of the lower rocker arm shaft passes downward through the pressure block passing hole, it is pressed and matched with the button.

4. The electromagnetic induction rocker potentiometer according to claim 1, characterized in that: The magnetic induction module is packaged as an integrated circuit chip, and the permanent magnet is a cylindrical permanent magnet.

5. The electromagnetic induction rocker potentiometer according to claim 1, characterized in that: The bottom shell connector includes a clamping ring and buckle ears which are arranged at both ends of the bottom shell and extend upward. The two ends of the upper cover are respectively provided with a clamping head and a buckle platform. The clamping ring is clamped and matched with the clamping head, and the buckle ears are buckled on the buckle platform after being bent.

6. An electromagnetic induction rocker potentiometer, characterized in that: The invention comprises a bottom shell, a magnetic induction circuit board, a base, a sliding plate, a spring, a rocker, an upper rocker arm, a lower rocker arm and an upper cover; a first magnetic induction module and a second magnetic induction module are arranged on the magnetic induction circuit board, the base is installed on the upper side of the magnetic induction circuit board, the base is provided with a cavity, and the sliding plate can be installed in the cavity of the base in a liftable manner; the base is provided with a first through hole and a second through hole, the first magnetic induction module extends into the first through hole, and the second magnetic induction module extends into the second through hole; a cavity spring seat is arranged on the periphery of the cavity of the base, a sliding plate spring seat is arranged on the lower side of the sliding plate, the lower end of the spring is installed on the cavity spring seat, and the upper end of the spring is installed under the sliding plate spring seat; the cavity side of the base is connected to the There are a number of guide feet, the inner wall of the guide feet is provided with a guide groove, and the side of the sliding plate is connected with a guide strip corresponding to the guide groove and slidingly matched; the rocker is installed on the sliding plate, and the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover in sequence from top to bottom, and the rocker passes through the upper cover and is connected to the upper rocker arm and the lower rocker arm; a first permanent magnet is provided at one end of the upper rocker arm, and the positions of the first permanent magnet and the first magnetic induction module are opposite to each other and electromagnetic induction cooperate with each other; a second permanent magnet is provided at one end of the lower rocker arm, and the positions of the second permanent magnet and the second magnetic induction module are opposite to each other and electromagnetic induction cooperate with each other; the bottom shell is installed on the lower side of the magnetic induction circuit board, and the end of the bottom shell is provided with a bottom shell connector for connecting the upper cover.

7. The electromagnetic induction rocker potentiometer according to claim 6, characterized in that: The upper rocker arm includes an upper rocker arm body and an upper rocker arm shaft connected to both ends of the upper rocker arm body, the upper rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the upper rocker arm body is provided with an upper rocker arm middle hole for the rocker arm to pass through, the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker arm, a first magnet positioning block is provided at the lower end of one of the upper rocker arm shafts, and the first permanent magnet is installed in the first magnet positioning block.

8. The electromagnetic induction rocker potentiometer according to claim 7, characterized in that: The lower rocker arm includes a lower rocker arm body and a lower rocker arm shaft connected to both ends of the lower rocker arm body, the lower rocker arm shaft is rotatably connected to the inner wall of the upper cover, the middle part of the lower rocker arm body is provided with a lower rocker arm middle hole for the rocker arm to pass through, and the inner wall of the lower rocker arm middle hole is rotatably connected to the rocker arm; a second magnet positioning block is provided at the lower end of one of the upper rocker arm shafts, and the second permanent magnet is installed in the second magnet positioning block; a pressure block is provided at the lower end of the other lower rocker arm shaft, a pressure block through hole is provided at one end of the base, a button is provided at one end of the magnetic induction circuit board, the pressure block through hole is opposite to the position of the button up and down, and after the pressure block of the lower rocker arm shaft passes downward through the pressure block through hole, it is pressed and matched with the button.

9. The electromagnetic induction rocker potentiometer according to claim 7, characterized in that: The first magnetic induction module and the second magnetic induction module are respectively packaged as integrated circuit chips, and the first permanent magnet and the second permanent magnet are respectively rectangular permanent magnets.

10. The electromagnetic induction rocker potentiometer according to claim 7, characterized in that: The bottom shell connector includes a clamping ring and buckle ears which are arranged at both ends of the bottom shell and extend upward. The two ends of the upper cover are respectively provided with a clamping head and a buckle platform. The clamping ring is clamped and matched with the clamping head, and the buckle ears are buckled on the buckle platform after being bent.

Images