Angular electromagnetic induction type rocker potentiometer

Abstract

The utility model discloses an angle electromagnetic induction formula rocker potentiometer, including base, sliding disc, rocker, lower rocker arm, upper rocker arm, iron shell, first potentiometer subassembly and second potentiometer subassembly, wherein: the end of lower rocker arm swing axle of lower rocker arm one end is equipped with first permanent magnet, and the midpoint of first permanent magnet is located above the axis of lower rocker arm swing axle, and first potentiometer subassembly includes first circuit board, and is equipped with first angle sensor chip on first circuit board, and the position of first angle sensor chip is opposite with first permanent magnet, the end of upper rocker arm swing axle of upper rocker arm one end is equipped with second permanent magnet, and the midpoint of second permanent magnet is located above the axis of upper rocker arm swing axle, and second potentiometer subassembly includes second circuit board, and is equipped with second angle sensor chip on second circuit board, and the position of second angle sensor chip is opposite with second permanent magnet, the utility model discloses high precision, is not easy to be influenced by outside magnetic field interference.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, and in particular to an angle electromagnetic induction type rocker potentiometer. Background Technology

[0002] A joystick potentiometer is a variable potentiometer suitable for joystick control handles in drones, game consoles, etc. By shaking the joystick potentiometer, the state changes of related internal components of drones, game consoles, etc. can be controlled.

[0003] The applicant filed a patent application on February 21, 2023, with publication number CN220065309U, which discloses an electromagnetic induction type rocker potentiometer, including a base, a sliding plate, a rocker arm, a lower rocker arm, an upper rocker arm, an iron shell, a first potentiometer assembly, and a second potentiometer assembly. The first and second potentiometer assemblies are respectively mounted on the iron shell, and each assembly includes a housing, a rotor, a permanent magnet, and a magnetic induction circuit board. A first recess is provided on the left side of the housing, and the rotor is housed within this recess, allowing it to rotate relative to the housing. The right end of the housing is injection molded to seal the magnetic... The electromagnetic induction circuit board has metal pins connected to its lower end, which extend downwards from the outer casing. A magnetic induction module is mounted on the magnetic induction circuit board, facing the bottom of a first recess on the left side of the outer casing. The rotor has a first through-hole and a second recess. A permanent magnet is fixedly installed in the second recess, with its right side facing the magnetic induction module. The axial distance between the permanent magnet and the magnetic induction module does not change with rotor rotation. One end of the lower rocker arm is rotatably inserted into the first through-hole of the rotor of the first potentiometer assembly, and one end of the upper rocker arm is rotatably inserted into the first through-hole of the rotor of the second potentiometer assembly. When the lower and upper rocker arms drive the rotor to rotate forward or backward, the magnetic intensity of the permanent magnet at the position of the magnetic induction module linearly increases or decreases, thus synchronizing the change in the induced signal with the rotor's rotation.

[0004] In the aforementioned patent CN220065309U, since one end of the lower or upper rocker arm is inserted into the first through hole of the rotor, and the permanent magnet is fixedly installed in the second concave cavity, which is located below the first through hole, the center point of the permanent magnet is not on the rotation axis of the lower or upper rocker arm. When the lower or upper rocker arm rotates, the permanent magnet will swing around the rotation axis of the lower or upper rocker arm. Therefore, the straight-line distance between the permanent magnet and the magnetic induction module changes. The larger the swing angle of the permanent magnet, the larger the straight-line distance between the permanent magnet and the magnetic induction module, and the smaller the magnetic field strength sensed by the magnetic induction module; the smaller the swing angle of the permanent magnet, the smaller the straight-line distance between the permanent magnet and the magnetic induction module, and the larger the magnetic field strength sensed by the magnetic induction module. The magnetic induction module uses the change in the sensed magnetic field strength to determine the rotation angle of the lower or upper rocker arm. However, this method of determining the rotation angle of the lower or upper rocker arm by sensing changes in the magnetic field has the following technical problems: the smaller the magnetic field strength sensed by the magnetic induction module, the worse the sensing accuracy of the magnetic induction module. Under such unsaturated micro magnetic field, the magnetic induction module is particularly susceptible to interference from external magnetic fields, which makes the magnetic induction module's judgment of the rotation angle of the lower or upper rocker arm inaccurate. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an angle electromagnetic induction rocker potentiometer that is highly accurate and not easily affected by external magnetic field interference, in order to address the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an angle electromagnetic induction type rocker potentiometer, comprising a base, a sliding plate, a rocker arm, a lower rocker arm, an upper rocker arm, an iron shell, a first potentiometer assembly, and a second potentiometer assembly; the base includes a cavity, the sliding plate is installed inside the cavity of the base, the rocker arm is installed on the sliding plate, the iron shell is installed outside the base, the lower rocker arm and the upper rocker arm are respectively fitted onto the rocker arm, the upper rocker arm is located above the lower rocker arm, and the two ends of the lower rocker arm and the upper rocker arm extend outward from the iron shell and the base, respectively; the lower rocker arm has a lower rocker arm pivot at both ends, and the upper rocker arm has an upper rocker arm pivot at both ends; the first potentiometer assembly and the second potentiometer assembly are respectively installed on the iron shell; the lower rocker arm... A first permanent magnet is installed at the end of the lower rocker arm shaft at one end of the rocker arm. The midpoint of the first permanent magnet is located on the axis of the lower rocker arm shaft. The first potentiometer assembly includes a first housing, inside which a first circuit board is installed. A first angle sensor chip is installed on the first circuit board, and the first angle sensor chip is positioned opposite to the first permanent magnet. A second permanent magnet is installed at the end of the upper rocker arm shaft at one end of the upper rocker arm. The midpoint of the second permanent magnet is located on the axis of the upper rocker arm shaft. The second potentiometer assembly includes a second housing, inside which a second circuit board is installed. A second angle sensor chip is installed on the second circuit board, and the second angle sensor chip is positioned opposite to the second permanent magnet.

[0007] In the above technical solution, the lower rocker arm shaft at one end of the lower rocker arm is provided with a first magnet mounting cavity, the first permanent magnet is installed in the first magnet mounting cavity, and the side of the first permanent magnet faces the first angle sensor chip; the upper rocker arm shaft at one end of the upper rocker arm is provided with a second magnet mounting cavity, the second permanent magnet is installed in the second magnet mounting cavity, and the side of the second permanent magnet faces the second angle sensor chip.

[0008] In the above technical solution, a first cavity is provided inside the first housing, the first circuit board is installed inside the first cavity, the lower end of the first circuit board is provided with several first circuit board pins, the first circuit board pins extend downward out of the first housing, and the first magnet mounting cavity of the lower rocker arm and the first permanent magnet inside the first magnet mounting cavity extend into the first cavity together; a second cavity is provided inside the second housing, the second circuit board is installed inside the second cavity, the lower end of the second circuit board is provided with several second circuit board pins, the second circuit board pins extend downward out of the second housing, and the second magnet mounting cavity of the upper rocker arm and the second permanent magnet inside the second magnet mounting cavity extend into the second cavity together.

[0009] In the above technical solution, the first cavity is provided with a plurality of first circuit board positioning posts, the first circuit board is provided with a plurality of first circuit board positioning holes, and the first circuit board positioning posts are respectively inserted into the corresponding first circuit board positioning holes and positioning the first circuit board; the second cavity is provided with a plurality of second circuit board positioning posts, the second circuit board is provided with a plurality of second circuit board positioning holes, and the second circuit board positioning posts are respectively inserted into the corresponding second circuit board positioning holes and positioning the second circuit board.

[0010] In the above technical solution, the first outer shell is provided with several first outer shell positioning posts and first positioning hooks, and the side of the iron shell is provided with first iron shell positioning holes that are inserted and cooperate with the first outer shell positioning posts and first positioning slots that are engaged and cooperate with the first positioning hooks; the second outer shell is provided with several second outer shell positioning posts and second positioning hooks, and the side of the iron shell is provided with second iron shell positioning holes that are inserted and cooperate with the second outer shell positioning posts and second positioning slots that are engaged and cooperate with the second positioning hooks.

[0011] In the above technical solution, the lower rocker arm includes a lower rocker arm body, the lower rocker arm pivot is connected to both ends of the lower rocker arm body, the lower rocker arm body arches upward and is movably fitted onto the rocker arm, and a pin is inserted between the lower rocker arm body and the rocker arm, the axis of which is consistent with the axis of the upper rocker arm pivot; the upper rocker arm includes an upper rocker arm body, the upper rocker arm pivot is connected to both ends of the upper rocker arm body, and the upper rocker arm body arches upward and is movably fitted onto the rocker arm.

[0012] In the above technical solution, the cavity side of the base is connected to several guide feet, and the side of the slide is connected to guide bars that correspond to and slide with the guide feet; a vertical central rod is provided in the middle of the cavity of the base, and a vertical central tube is provided in the middle of the slide, the central tube having a through hole, and the central rod is inserted upward into the through hole of the central tube; the lower end of the rocker arm is provided with a rocker arm base plate, which slides with the upper side of the slide, and the lower side of the rocker arm base plate is provided with a spherical protrusion, which is located above the center of the through hole; the upper end of the central rod is provided with a frustum-shaped protrusion, the upper end of which has a concave surface, and the spherical protrusion corresponds vertically to the concave surface. The inner wall of the guide feet is provided with guide grooves, and at least one guide foot's guide groove is provided with a limiting mechanism, which is used to limit the sliding endpoint position of the guide bar.

[0013] In the above technical solution, the angle electromagnetic induction rocker potentiometer also includes a spring. A first spring seat is provided inside the cavity of the base, and a second spring seat is provided at the lower end of the slide. The lower end of the spring is mounted on the first spring seat, and the upper end of the spring is mounted below the second spring seat.

[0014] In the above technical solution, the side of the iron shell is provided with four downward-facing first arc-shaped grooves, and the lower rocker arm shafts at both ends of the lower rocker arm and the upper rocker arm shafts at both ends of the upper rocker arm are rotatably mounted on the lower side of the corresponding first arc-shaped grooves; the side of the base is provided with three support blocks, and the upper end of the support blocks is provided with upward-facing second arc-shaped grooves, each second arc-shaped groove corresponding to a first arc-shaped groove; the lower rocker arm shaft at one end of the lower rocker arm and the upper rocker arm shafts at both ends of the upper rocker arm are rotatably mounted on the upper side of the corresponding second arc-shaped grooves; one end of the base is provided with a button, and the lower rocker arm shaft at the other end of the lower rocker arm is positioned above the button.

[0015] The beneficial effects of this utility model are: (1) Since the end of the lower rocker arm shaft is equipped with a first permanent magnet, the midpoint of the first permanent magnet is located on the axis of the lower rocker arm shaft, and the first angle sensor chip is installed on the first circuit board of the first potentiometer assembly, and the position of the first angle sensor chip is opposite to that of the first permanent magnet, on the one hand, when the lower rocker arm drives the first permanent magnet to rotate, the angle of the magnetic field line of the first permanent magnet will change, and the first angle sensor chip can accurately judge the rotation angle of the lower rocker arm according to the angle of the magnetic field line of the first permanent magnet; on the other hand, no matter how large the rotation angle of the lower rocker arm is, the midpoint of the first permanent magnet and the first angle sensor chip is always located on the axis of the lower rocker arm shaft, and the distance between the first permanent magnet and the first angle sensor chip will not change. The first angle sensor chip always senses the saturated magnetic field of the first permanent magnet. Under this saturated magnetic field, the first angle sensor chip is not easily affected by the external magnetic field interference, so that the first angle sensor chip can judge the rotation angle of the lower rocker arm very accurately. (2) In this utility model, since a second permanent magnet is installed at the end of the upper rocker arm shaft, the midpoint of the second permanent magnet is located on the axis of the upper rocker arm shaft, and a second angle sensor chip is installed on the second circuit board of the second potentiometer assembly, and the second angle sensor chip is positioned opposite to the second permanent magnet, on the one hand, during the process of the upper rocker arm driving the second permanent magnet to rotate, the angle of the magnetic field line of the second permanent magnet will change, and the second angle sensor chip can accurately determine the rotation angle of the upper rocker arm according to the angle of the magnetic field line of the second permanent magnet; on the other hand, no matter how large the rotation angle of the upper rocker arm is, the midpoint of the second permanent magnet and the second angle sensor chip is always located on the axis of the upper rocker arm shaft, and the distance between the second permanent magnet and the second angle sensor chip will not change. Therefore, the second angle sensor chip always senses the saturated magnetic field of the second permanent magnet. Under this saturated magnetic field, the second angle sensor chip is not easily affected by external magnetic field interference, thus making the second angle sensor chip's judgment of the rotation angle of the lower rocker arm very accurate. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention.

[0017] Figure 2 This is a first-view diagram of the dispersed structure of this utility model.

[0018] Figure 3 This is a second-view diagram of the dispersed structure of this utility model.

[0019] Figure 4 This is one of the longitudinal sectional structural views of this utility model.

[0020] Figure 5 This is the second longitudinal sectional view of the present invention. Detailed Implementation

[0021] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1-5 As shown, this utility model is an angle electromagnetic induction type rocker potentiometer, including a base 1, a sliding plate 2, a rocker arm 3, a lower rocker arm 4, an upper rocker arm 5, an iron shell 6, a first potentiometer assembly 7, and a second potentiometer assembly 8. The base 1 includes a cavity 101, the sliding plate 2 is installed inside the cavity 101 of the base 1, the rocker arm 3 is installed on the sliding plate 2, the iron shell 6 is installed outside the base 1, the lower rocker arm 4 and the upper rocker arm 5 are respectively fitted onto the rocker arm 3, the upper rocker arm 5 is located above the lower rocker arm 4, and both ends of the lower rocker arm 4 and the upper rocker arm 5 extend outward from the iron shell 6 and the base 1, respectively. The lower rocker arm 4 has a lower rocker arm pivot 41 at both ends, and the upper rocker arm 5 has an upper rocker arm pivot 51 at both ends. The first potentiometer assembly 7 and the second potentiometer assembly 8 are respectively installed on the iron shell 6. The lower rocker arm 4 has a lower rocker arm pivot 51 at one end. A first permanent magnet 42 is installed at the end of shaft 41, and the midpoint of the first permanent magnet 42 is located on the axis of the lower rocker arm shaft 41. The first potentiometer assembly 7 includes a first housing 71, and a first circuit board 72 is installed inside the first housing 71. A first angle sensor chip 73 is installed on the first circuit board 72, and the first angle sensor chip 73 is positioned opposite to the first permanent magnet 42. A second permanent magnet 52 is installed at the end of the upper rocker arm shaft 51 at one end of the upper rocker arm 5, and the midpoint of the second permanent magnet 52 is located on the axis of the upper rocker arm shaft 51. The second potentiometer assembly 8 includes a second housing 81, and a second circuit board 82 is installed inside the second housing 81. A second angle sensor chip 83 is installed on the second circuit board 82, and the second angle sensor chip 83 is positioned opposite to the second permanent magnet 52.

[0023] In this invention, when the lower rocker arm 4 drives the first permanent magnet 42 to rotate, the angle of the magnetic field line of the first permanent magnet 42 will change due to rotation. The first angle sensor chip 73 can accurately determine the rotation angle of the lower rocker arm 4 based on the angle of the magnetic field line of the first permanent magnet 42. In this invention, when the upper rocker arm 5 drives the second permanent magnet 52 to rotate, the angle of the magnetic field line of the second permanent magnet 52 will change due to rotation. The second angle sensor chip 83 can accurately determine the rotation angle of the upper rocker arm 5 based on the angle of the magnetic field line of the second permanent magnet 52.

[0024] Regardless of the rotation angle, the midpoint between the first permanent magnet 42 and the first angle sensor chip 73 of the lower rocker arm 4 in this invention is always located on the axis of the lower rocker arm rotation shaft 41, and the distance between them remains unchanged. The first angle sensor chip 73 always senses the saturated magnetic field of the first permanent magnet 42. Under this saturated magnetic field, the first angle sensor chip 73 is not easily affected by external magnetic field interference, thus making its judgment of the rotation angle of the lower rocker arm 4 highly accurate. Similarly, regardless of the rotation angle, the midpoint between the second permanent magnet 52 and the second angle sensor chip 83 of the upper rocker arm 5 in this invention is always located on the axis of the upper rocker arm rotation shaft 51, and the distance between them remains unchanged. Therefore, the second angle sensor chip 83 always senses the saturated magnetic field of the second permanent magnet 52. Under this saturated magnetic field, the second angle sensor chip 83 is not easily affected by external magnetic field interference, thus making its judgment of the rotation angle of the lower rocker arm 4 highly accurate.

[0025] like Figures 2-5 As shown, the lower rocker arm 4 has a first magnet mounting cavity 43 at one end of its lower rocker arm shaft 41. A first permanent magnet 42 is mounted within this cavity. The first permanent magnet 42 is preferably rectangular, and its side faces the first angle sensor chip 73. Similarly, the upper rocker arm 5 has a second magnet mounting cavity 53 at one end of its upper rocker arm shaft 51. A second permanent magnet 52 is mounted within this cavity. The second permanent magnet 52 is preferably rectangular, and its side faces the second angle sensor chip 83. Using rectangular magnets makes it easier to find the center point of the magnetic block and to sense changes in the angle of the magnetic field lines.

[0026] like Figures 2-5As shown, the first housing 71 has a first cavity 711 inside, the first circuit board 72 is installed inside the first cavity 711, the lower end of the first circuit board 72 has several first circuit board pins 721, the first circuit board pins 721 extend downward from the first housing 71, the first magnet mounting cavity 43 of the lower rocker arm 4 and the first permanent magnet 42 inside the first magnet mounting cavity 43 extend into the first cavity 711 together; the second housing 81 has a second cavity 811 inside, the second circuit board 82 is installed inside the second cavity 811, the lower end of the second circuit board 82 has several second circuit board pins 821, the second circuit board pins 821 extend downward from the second housing 81, the second magnet mounting cavity 53 of the upper rocker arm 5 and the second permanent magnet 52 inside the second magnet mounting cavity 53 extend into the second cavity 811 together. The first cavity 711 is provided with a plurality of first circuit board positioning posts 712, and the first circuit board 72 is provided with a plurality of first circuit board positioning holes 722. The first circuit board positioning posts 712 are respectively inserted into the corresponding first circuit board positioning holes 722 and positioning the first circuit board 72. The second cavity 811 is provided with a plurality of second circuit board positioning posts 812, and the second circuit board 82 is provided with a plurality of second circuit board positioning holes 822. The second circuit board positioning posts 812 are respectively inserted into the corresponding second circuit board positioning holes 822 and positioning the second circuit board 82. The first outer shell 71 is provided with several first outer shell positioning posts 713 and first positioning hooks 714. The side of the iron shell 6 is provided with a first iron shell positioning hole 61 that is inserted into the first outer shell positioning post 713 and a first positioning groove 62 that is engaged with the first positioning hook 714. The second outer shell 81 is provided with several second outer shell positioning posts 813 and second positioning hooks 814. The side of the iron shell 6 is provided with a second iron shell positioning hole 63 that is inserted into the second outer shell positioning post 813 and a second positioning groove 64 that is engaged with the second positioning hook 814.

[0027] like Figures 2-5 As shown, the lower rocker arm 4 includes a lower rocker arm body 44, and a lower rocker arm pivot 41 is connected to both ends of the lower rocker arm body 44. The lower rocker arm body 44 is arched upward and movably mounted on the rocker arm 3. A pin 9 is inserted between the lower rocker arm body 44 and the rocker arm 3. The axial direction of the pin 9 is consistent with the axial direction of the upper rocker arm pivot 51. The upper rocker arm 5 includes an upper rocker arm body 54, and an upper rocker arm pivot 51 is connected to both ends of the upper rocker arm body 54. The upper rocker arm body 54 is arched upward and movably mounted on the rocker arm 3.

[0028] like Figure 2 and Figure 3As shown, the cavity 101 of the base 1 is connected to several guide feet 102 on its side, and the slide plate 2 is connected to guide strips 21 that correspond to and slide with the guide feet 102 on its side; a vertical central rod 103 is provided in the middle of the cavity 101 of the base 1, and a vertical central tube 22 is provided in the middle of the slide plate 2. The central tube 22 has a through hole, and the central rod 103 is inserted into the through hole of the central tube 22; a rocker base 31 is provided at the lower end of the rocker arm 3, and the rocker base 31 slides with the upper side of the slide plate 2. A spherical protrusion 31 is provided on the lower side of the rocker base 31, and the spherical protrusion 31 is located in the middle above the through hole; a frustum-shaped protrusion 1031 is provided at the upper end of the central rod 103, and the upper end of the frustum-shaped protrusion 1031 has a concave surface, and the spherical protrusion 311 corresponds vertically to the concave surface. The inner wall of the guide foot 102 is provided with a guide groove 1021, and at least one guide foot 102 has a limiting mechanism in its guide groove 1021. The limiting mechanism is used to limit the sliding end position of the guide bar 21.

[0029] like Figures 2-5 As shown, the angle electromagnetic induction rocker potentiometer also includes a spring 10. A first spring seat is provided inside the cavity 101 of the base 1, and a second spring seat is provided at the lower end of the slide plate 2. The lower end of the spring 10 is mounted on the first spring seat, and the upper end of the spring 10 is mounted below the second spring seat.

[0030] like Figures 1-3 As shown, the side of the iron shell 6 is provided with four downward-facing first arc-shaped grooves 65. The lower rocker arm shafts 41 at both ends of the lower rocker arm 4 and the upper rocker arm shafts 51 at both ends of the upper rocker arm 5 are respectively rotatably mounted on the lower side of the corresponding first arc-shaped grooves 65. The side of the base 1 is provided with three support blocks 104. The upper end of the support block 104 is provided with an upward-facing second arc-shaped groove 1041. Each second arc-shaped groove 1041 corresponds to a first arc-shaped groove 65. The lower rocker arm shaft at one end of the lower rocker arm 4 is rotatably mounted on the lower side of the corresponding first arc-shaped groove 65. The upper rocker arm shafts 51 at both ends of the shaft 41 and the upper rocker arm 5 are respectively rotatably mounted on the upper side of the corresponding second arc groove 1041; the first arc groove 65 and the second arc groove 1041 are combined to form a shaft hole for the upper rocker arm shaft 51 or the lower rocker arm shaft 41 to rotate; one end of the base 1 is provided with a button 11, and the lower rocker arm shaft 41 at the other end of the lower rocker arm 4 is placed on the upper side of the button 11. When the rocker arm 3 is pressed down, it can drive the lower rocker arm shaft 41 at the other end of the lower rocker arm 4 to press the button 11.

[0031] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. An angle electromagnetic induction type rocker potentiometer, comprising a base, a slide plate, a rocker arm, a lower rocker arm, an upper rocker arm, an iron shell, a first potentiometer assembly, and a second potentiometer assembly; the base includes a cavity, the slide plate is installed inside the cavity of the base, the rocker arm is installed on the slide plate, the iron shell is installed outside the base, the lower rocker arm and the upper rocker arm are respectively fitted onto the rocker arm, the upper rocker arm is located above the lower rocker arm, the two ends of the lower rocker arm and the upper rocker arm respectively extend outward from the iron shell and the base, the two ends of the lower rocker arm are provided with lower rocker arm pivots, and the two ends of the upper rocker arm are provided with upper rocker arm pivots; the first potentiometer assembly and the second potentiometer assembly are respectively installed on the iron shell; characterized in that: A first permanent magnet is installed at the end of the lower rocker arm shaft, with the midpoint of the first permanent magnet located on the axis of the lower rocker arm shaft. The first potentiometer assembly includes a first housing, inside which a first circuit board is installed, and on the first circuit board a first angle sensor chip is installed, with the first angle sensor chip positioned opposite to the first permanent magnet. A second permanent magnet is installed at the end of the upper rocker arm shaft, with the midpoint of the second permanent magnet located on the axis of the upper rocker arm shaft. The second potentiometer assembly includes a second housing, inside which a second circuit board is installed, and on the second circuit board a second angle sensor chip is installed, with the second angle sensor chip positioned opposite to the second permanent magnet.

2. The angle electromagnetic induction type rocker potentiometer according to claim 1, characterized in that: The lower rocker arm has a first magnet mounting cavity at one end of its lower rocker arm shaft, and the first permanent magnet is installed inside the first magnet mounting cavity, with the side of the first permanent magnet facing the first angle sensor chip; the upper rocker arm has a second magnet mounting cavity at one end of its upper rocker arm shaft, and the second permanent magnet is installed inside the second magnet mounting cavity, with the side of the second permanent magnet facing the second angle sensor chip.

3. The angle electromagnetic induction type rocker potentiometer according to claim 2, characterized in that: The first housing has a first recess, and the first circuit board is installed in the first recess. The lower end of the first circuit board has several first circuit board pins, which extend downwards out of the first housing. The first magnet mounting cavity of the lower rocker arm and the first permanent magnet inside the first magnet mounting cavity extend into the first recess. The second housing has a second recess, and the second circuit board is installed in the second recess. The lower end of the second circuit board has several second circuit board pins, which extend downwards out of the second housing. The second magnet mounting cavity of the upper rocker arm and the second permanent magnet inside the second magnet mounting cavity extend into the second recess.

4. The angle electromagnetic induction type rocker potentiometer according to claim 3, characterized in that: The first cavity is provided with several first circuit board positioning posts, and the first circuit board is provided with several first circuit board positioning holes. The first circuit board positioning posts are respectively inserted into the corresponding first circuit board positioning holes and positioning the first circuit board. The second cavity is provided with several second circuit board positioning posts, and the second circuit board is provided with several second circuit board positioning holes. The second circuit board positioning posts are respectively inserted into the corresponding second circuit board positioning holes and positioning the second circuit board.

5. The angle electromagnetic induction type rocker potentiometer according to claim 3, characterized in that: The first outer shell is provided with several first outer shell positioning posts and first positioning hooks. The side of the iron shell is provided with first iron shell positioning holes that are inserted and engaged with the first outer shell positioning posts and first positioning slots that are engaged and engaged with the first positioning hooks. The second outer shell is provided with several second outer shell positioning posts and second positioning hooks. The side of the iron shell is provided with second iron shell positioning holes that are inserted and engaged with the second outer shell positioning posts and second positioning slots that are engaged and engaged with the second positioning hooks.

6. The angle electromagnetic induction type rocker potentiometer according to claim 1, characterized in that: The lower rocker arm includes a lower rocker arm body, with a lower rocker arm pivot connecting both ends of the lower rocker arm body. The lower rocker arm body arches upward and is movably mounted on the rocker arm. A pin is inserted between the lower rocker arm body and the rocker arm, and the axis of the pin is consistent with the axis of the upper rocker arm pivot. The upper rocker arm includes an upper rocker arm body, with an upper rocker arm pivot connecting both ends of the upper rocker arm body. The upper rocker arm body arches upward and is movably mounted on the rocker arm.

7. The angle electromagnetic induction type rocker potentiometer according to claim 1, characterized in that: The base cavity has several guide feet connected to its side, and the slide plate has guide strips connected to its side that correspond to and slide with the guide feet. A vertical central rod is located in the center of the base cavity, and a vertical central tube is located in the center of the slide plate. The central tube has a through-hole, and the central rod is inserted upwards into the through-hole. A rocker arm base is located at the lower end of the rocker arm, slidingly engaging with the upper surface of the slide plate. A spherical protrusion is located on the lower side of the rocker arm base, above the central hole. A frustum-shaped protrusion is located at the upper end of the central rod, with a concave surface at its upper end. The spherical protrusion corresponds vertically to the concave surface.

8. The angle electromagnetic induction type rocker potentiometer according to claim 7, characterized in that: The inner wall of the guide foot is provided with a guide groove, and at least one guide foot has a limiting mechanism in the guide groove, which is used to limit the sliding end position of the guide bar.

9. The angle electromagnetic induction type rocker potentiometer according to claim 1, characterized in that: It also includes a spring, with a first spring seat provided inside the cavity of the base, a second spring seat provided at the lower end of the slide, the lower end of the spring mounted on the first spring seat, and the upper end of the spring mounted below the second spring seat.

10. The angle electromagnetic induction type rocker potentiometer according to claim 1, characterized in that: The side of the iron shell is provided with four downward-facing first arc-shaped grooves. The lower rocker arm shafts at both ends of the lower rocker arm and the upper rocker arm shafts at both ends of the upper rocker arm are rotatably mounted on the lower side of the corresponding first arc-shaped grooves. The side of the base is provided with three support blocks. The upper end of the support blocks is provided with upward-facing second arc-shaped grooves. Each second arc-shaped groove corresponds to a first arc-shaped groove. The lower rocker arm shaft at one end of the lower rocker arm and the upper rocker arm shafts at both ends of the upper rocker arm are rotatably mounted on the upper side of the corresponding second arc-shaped grooves. One end of the base is provided with a button, and the lower rocker arm shaft at the other end of the lower rocker arm is located above the button.

Images