Rocker potentiometer with variable capacitor

Abstract

The utility model discloses a rocker potentiometer with a variable capacitor. The rocker potentiometer comprises a circuit board, a seat body, a sliding block, a rocker arm, a rocker and the variable capacitor, the base body is installed on the upper side of the circuit board, a sliding groove is formed in the base body, the sliding block is installed in the sliding groove of the base body in a sliding mode, and the sliding block is connected with an insulation sheet; the rocker arm is rotatably mounted on the seat body, the rocker arm is provided with a shifting block for shifting the sliding block to slide back and forth, and the rocker is connected with the rocker arm; the variable capacitor comprises a first electrode plate and a second electrode plate which correspond to each other and are electrically connected with the circuit board, and the insulating sheet is inserted between the first electrode plate and the second electrode plate and can move back and forth. The first electrode plate and the second electrode plate of the variable capacitor do not generate relative displacement along with the rotation of the rocker arm, the capacitance of the variable capacitor is changed by the movement of the insulating sheet, and the rocker potentiometer with the variable capacitor is low in power consumption, strong in anti-interference capability, relatively low in cost, high in precision and ultra-long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of potentiometers, in particular to a rocker potentiometer with a variable capacitor. 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 first potentiometer component and the second potentiometer component are respectively mounted on the iron shell, the sliding plate is installed in the cavity of the base, the rocker 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 mounted on the rocker arm, the upper rocker arm is located on the upper side of 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; the first potentiometer component and the second potentiometer component are respectively mounted on the iron shell, one end of the lower rocker arm is rotatably inserted in the first potentiometer component, and one end of the upper rocker arm is rotatably inserted in the second potentiometer component. The structure of the first potentiometer component and the second potentiometer component of the rocker potentiometer 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 requires a brush contact to contact the carbon film for friction 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 a large production error; (2) Due to the friction of the brush contact point, contact interference noise will be generated when the position changes.

[0003] With the advancement of technology, electromagnetic induction rocker potentiometers using Hall sensor chips have gradually been developed and applied. Electromagnetic induction rocker potentiometers overcome the shortcomings of the above-mentioned contact structure potentiometers, use permanent magnets as rotating or sliding components, and use linear Hall sensors to detect the position of permanent magnets in real time. When adjusting the position, the electromagnetic induction rocker potentiometer has no contact, no wear, and no clutter interference during adjustment. However, the electromagnetic induction rocker potentiometer using Hall sensor chip still has the following technical problems: (1) High power consumption. For example, at a voltage of 3V, the working current of an ordinary carbon film potentiometer is about 300μA, while the working current of a Hall sensor chip is 3-4mA, and the power consumption is more than 10 times that of an ordinary carbon film brush potentiometer. (2) Poor anti-interference ability. The Hall sensor chip is easily affected by external magnetic fields. (3) The output accuracy of the Hall sensor chip is not high enough, usually only up to 8 bits. (4) The permanent magnet matched with the Hall sensor chip will gradually reduce its magnetism after long-term use, and demagnetization problems may occur, resulting in malfunction of the electromagnetic induction potentiometer. (5) The cost of the Hall sensor chip is relatively high, which is not conducive to reducing the overall cost of the rocker potentiometer.

[0004] In response to the problems of carbon film brush rocker potentiometers and electromagnetic induction rocker potentiometers, capacitive rocker potentiometers have gradually emerged in the prior art. Referring to Chinese patent document CN116059624A, a rocker device is disclosed, including a mounting base, a housing, a rocker, a circuit board, and a capacitive sensing component, wherein the capacitive sensing component includes a first electrode and a second electrode arranged at a relative interval along a first direction; the circuit board is electrically connected to the capacitive sensing component; and the circuit board is used to output corresponding position information according to the change in capacitance between the first electrode and the second electrode. Furthermore, the first electrode is mounted on the upper rocker arm or the lower rocker arm, and the second electrode is mounted on the circuit board. The side wall of the rocker handle abuts against the upper rocker arm or the lower rocker arm, pushing the upper rocker arm or the lower rocker arm to rotate relative to the housing, thereby driving the first electrode connected to the upper rocker arm or the lower rocker arm to move, so that a relative displacement is generated between the second electrode and the first electrode, so that the overlapping area of ​​the two along the first direction changes. The joystick device can output sensing information according to the change of the overlapping area between the second electrode and the first electrode, and has the technical advantages of low power consumption, strong anti-interference ability and low cost.

[0005] However, the rocker device disclosed in the above-mentioned Chinese patent document CN116059624A also has the following defects: (1) The first electrode of the patent is installed on the upper rocker arm or the lower rocker arm. During the rotation of the upper rocker arm or the lower rocker arm, the upper rocker arm or the lower rocker arm will drive the first electrode to move back and forth continuously, and the first electrode that moves back and forth will inevitably produce vibration, which will easily cause a slight change in the distance between the first electrode and the second electrode, resulting in an error problem in the capacitance value sensing, generating noise, and affecting the accuracy of the rocker device; (2) Since the circuit board is electrically connected to the capacitive sensing component, and the first electrode of the patent is installed on the upper rocker arm or the lower rocker arm, the circuit board and the first electrode must either be connected by wire or by dynamic contact. If the circuit board and the first electrode are connected by wire, the connection of the wire will become very cumbersome, affecting the overall structure of the rocker device, and the wire will move with the first electrode for a long time, which is easy to cause the wire connection to be poor; if the circuit board and the first electrode are connected by dynamic contact, then the contact point will inevitably wear out after long-term moving contact, and even poor contact will occur. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a rocker potentiometer with a variable capacitor in view of the deficiencies of the above-mentioned prior art. The first electrode sheet and the second electrode sheet of the variable capacitor of the rocker potentiometer will not undergo relative displacement as the rocker arm rotates, but the capacitance of the variable capacitor is changed by moving the insulating sheet of the slider, so that the rocker potentiometer not only has low power consumption, strong anti-interference ability, and low cost, but also has high precision and ultra-long service life.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a rocker potentiometer with a variable capacitor, comprising a circuit board, a base, a slider, a rocker arm, a rocker and a variable capacitor; the base is installed on the upper side of the circuit board, the base is provided with a slide groove, the slider can be slidably installed in the slide groove of the base, and the slider is connected with an insulating sheet; the rocker arm is rotatably installed on the base, the rocker arm is provided with a dial head for moving the slider back and forth, and the rocker is connected to the rocker arm; the variable capacitor includes a first electrode sheet and a second electrode sheet corresponding to each other, the first electrode sheet and the second electrode sheet are electrically connected to the circuit board respectively, the insulating sheet is inserted between the first electrode sheet and the second electrode sheet, and can move back and forth between the first electrode sheet and the second electrode sheet, and can change the area directly facing the first electrode sheet and the second electrode sheet during the movement process to change the capacitance of the variable capacitor; the second electrode sheet of the variable capacitor is attached to the circuit board, the first electrode sheet is located above the second electrode sheet, and the first electrode sheet is parallel to the second electrode sheet.

[0008] Preferably, two second electrode sheets of the variable capacitor are arranged in parallel, the first electrode sheet faces two second electrode sheets at the same time, the first electrode sheet and one of the second electrode sheets constitute a variable capacitor, and the first electrode sheet and the other second electrode sheet constitute another variable capacitor, and the capacitance of the two variable capacitors can be changed simultaneously during the reciprocating movement of the insulating sheet.

[0009] Preferably, the circuit board is provided with a sensing chip, the first electrode sheet and the second electrode sheet of the variable capacitor are electrically connected to the sensing chip respectively, and the sensing chip is used to output a corresponding sensing signal according to the capacitance of the variable capacitor.

[0010] Preferably, the first electrode sheet of the variable capacitor is fixedly mounted on the lower side of the base, one end of the first electrode sheet is connected to an electrode sheet contact, a circuit board contact is provided on the circuit board, and the electrode sheet contact is in contact and electrically connected with the circuit board contact.

[0011] Preferably, the first electrode sheet of the variable capacitor is provided with a plurality of rivet holes, and the lower side of the base is provided with a plurality of rivet columns corresponding to the rivet holes, and the rivet columns are inserted into the rivet holes from top to bottom and rivet and fix the first electrode sheet.

[0012] Preferably, the gap between the first electrode sheet and the second electrode sheet of the variable capacitor is 0.25 to 0.3 mm, the insulating sheet does not contact the first electrode sheet and the second electrode sheet, the insulating sheet is parallel to the first electrode sheet and the second electrode sheet respectively, and when the insulating sheet moves back and forth, the distance between the insulating sheet and the first electrode sheet or the second electrode sheet does not change.

[0013] Preferably, the seat body is provided with a slide groove along the front-to-back direction and the left-to-right direction respectively, a slider is provided in each of the two slide grooves, and the two sliders are respectively connected to an insulating sheet; the rocker arm includes an upper rocker arm and a lower rocker arm, the lower rocker arm is located at the lower side of the upper rocker arm, and a dial head is provided on the lower side of one end of the upper rocker arm and the lower rocker arm respectively, and each dial head is respectively matched with a slider; there are two variable capacitors, one of which is matched with the insulating sheet of one slider, and the other variable capacitor is matched with the insulating sheet of the other slider.

[0014] Preferably, the seat body is provided with a pressing hole, a pressing block is slidably installed in the pressing hole, a pot piece button corresponding to the pressing block is provided on the circuit board, and the other end of the lower rocker arm is pressed and matched with the pressing block.

[0015] Preferably, the rocker potentiometer also includes a bottom shell, a sliding disk, a spring and an upper cover, a cavity is provided on the base body, the sliding disk can be installed in the cavity of the base body in a liftable manner, a cavity spring seat is provided in the cavity of the base body, 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 under the sliding disk spring seat; a plurality of guide feet are connected to the side of the cavity of the base body, the inner wall of the guide foot is provided with a guide groove, and the side of the sliding disk is connected with a guide strip corresponding to the guide groove and slidably matched; the upper cover is covered on the base body, and the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover, 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 for connecting the upper cover.

[0016] Preferably, the upper rocker arm comprises an upper rocker arm body and an upper rocker arm rotating shaft connected to both ends of the upper rocker arm body, one of the upper rocker arm rotating shafts is integrally connected with a dial head, an axial hole for the upper rocker arm rotating shaft to rotate is provided between the seat body and the upper cover, an upper rocker arm middle hole for the rocker rod to pass through is provided in the middle part of the upper rocker arm body, and the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker rod; the lower rocker arm comprises a lower rocker arm body and a lower rocker arm rotating shaft connected to both ends of the lower rocker arm body, one of the lower rocker arm rotating shafts is integrally connected with a dial head, and the other lower rocker arm rotating shaft is press-fitted with a pressing block, an axial hole for the lower rocker arm rotating shaft to rotate is provided between the seat body and the upper cover, a lower rocker arm middle hole for the rocker rod to pass through is provided in the middle part of the lower rocker arm body, and the inner wall of the lower rocker middle hole is rotatably connected to the rocker rod.

[0017] The beneficial effects of the utility model are as follows: since the seat body is installed on the upper side of the circuit board, the seat body is provided with a slide groove, the slider can be slidably installed in the slide groove of the seat body, the slider is connected with an insulating sheet, the rocker arm can be rotatably installed on the seat body, the rocker arm is provided with a dial head for moving the slider back and forth, and the rocker is connected to the rocker arm. Therefore, when the rocker is shaken, the rocker arm can be driven to rotate, and the rocker arm drives the dial head to swing, and the dial head drives the slider and its insulating sheet to move back and forth; and since the variable capacitor includes a first electrode sheet and a second electrode sheet corresponding to each other, the first electrode sheet and the second electrode sheet are respectively electrically connected to the circuit board, the insulating sheet is inserted between the first electrode sheet and the second electrode sheet, and can move back and forth between the first electrode sheet and the second electrode sheet, therefore, the first electrode sheet and the second electrode sheet of the variable capacitor of the utility model are stationary, and will not be relatively displaced with the rotation of the rocker arm, but rely on the movement of the insulating sheet of the slider to change the area directly facing the first electrode sheet and the second electrode sheet, thereby changing the capacitance of the variable capacitor, so that the rocker potentiometer outputs a corresponding induction signal. It can be seen that the rocker potentiometer of the utility model has the following technical advantages: (1) low power consumption. For example, under a voltage of 3V, the operating current of the rocker potentiometer of the utility model with a variable capacitor is about 20μA, while the operating current of an ordinary carbon film potentiometer is about 300μA, and the operating current of a Hall sensor chip is 3-4mA. The power consumption is less than 1 / 10 of an ordinary carbon film potentiometer and less than 1 / 100 of a Hall sensor chip. (2) strong anti-interference ability. The variable capacitor will not be affected by external magnetic fields. (3) low cost. The cost of the variable capacitor is significantly lower than that of the Hall sensor chip and the carbon film potentiometer. (4) high precision. The positions of the first electrode sheet and the second electrode sheet are stationary, which can avoid the vibration caused by the reciprocating movement of the electrode sheets. When the insulating sheet of the slider moves back and forth, it will not cause The distance and position between the first electrode sheet and the second electrode sheet change, which can avoid the error problem and noise problem in the capacitance value induction, so that the rocker potentiometer with a variable capacitor of the utility model has a very high precision; (5) Long service life. On the one hand, since the insulating sheet of the slider is not in contact with the first electrode sheet and the second electrode sheet, the insulating sheet of the slider will not cause friction damage to the first electrode sheet and the second electrode sheet during the reciprocating movement. On the other hand, since the first electrode sheet and the second electrode sheet are both stationary, the first electrode sheet, the second electrode sheet and the circuit board can be directly welded or connected with a static contact point, thereby abandoning the wire connection method and the dynamic contact connection method in the prior art, so that the service life of the rocker potentiometer with a variable capacitor of the utility model is extremely long. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is an overall structural diagram of a rocker potentiometer with a variable capacitor.

[0019] Figure 2 It is a longitudinal sectional structural diagram of a rocker potentiometer with a variable capacitor of the utility model.

[0020] Figure 3 for Figure 2 A partial enlarged view of part A.

[0021] Figure 4 This is a structural diagram of the circuit board, variable capacitor, slider and insulating sheet.

[0022] Figure 5 This is one of the decentralized structural diagrams of the rocker potentiometer with a variable capacitor of the utility model.

[0023] Figure 6 This is the second decentralized structure diagram of the rocker potentiometer with a variable capacitor of the utility model. DETAILED DESCRIPTION

[0024] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 6As shown, the utility model is a rocker potentiometer with a variable capacitor, comprising a circuit board 1, a base 2, a slider 3, a rocker arm 4, a rocker arm 5 and a variable capacitor 6; the base 2 is mounted on the upper side of the circuit board 1, the base 2 is provided with a slide groove 21, the slider 3 is slidably mounted in the slide groove 21 of the base 2, and the slider 3 is connected to an insulating sheet 31; the rocker arm 4 is rotatably mounted on the base 2, the rocker arm 4 is provided with a dial head 43 for moving the slider 3 to slide back and forth, and the rocker arm 5 is connected to the rocker arm 4; the variable capacitor 6 comprises a first electrode sheet 61 and a second electrode sheet 62 corresponding to each other, the first electrode sheet 61 and the second electrode sheet 62 are electrically connected to the circuit board 1 respectively, the insulating sheet 31 is inserted between the first electrode sheet 61 and the second electrode sheet 62, and can move back and forth between the first electrode sheet 61 and the second electrode sheet 62, and can change the area directly facing the first electrode sheet and the second electrode sheet during the movement to change the capacitance of the variable capacitor 6. Capacitance is a very important physical quantity in the circuit. It is closely related to the dielectric constant. The dielectric constant is a physical quantity that represents the storage capacity of the insulating material relative to the vacuum capacitance, while the capacitance is a measure of the ability to store charge. The dielectric constant can be calculated using the following formula: ε=C / C0, where C represents the capacitance of the substance and C0 represents the capacitance in a vacuum. From the calculation formula of the dielectric constant, it can be seen that the dielectric constant is directly proportional to the capacitance. The dielectric constants of different media vary greatly because different media have different electric field strengths and molecular structures. When the medium between the two electrodes of the capacitor changes, the dielectric constant will change, and the capacitance will also change. The utility model utilizes this principle. When the insulating sheet 31 moves back and forth between the first electrode sheet 61 and the second electrode sheet 62, the indirect facing area between the first electrode sheet 61 and the second electrode sheet 62 blocked by the insulating sheet 31 will change, and the direct facing area between the first electrode sheet 61 and the second electrode sheet 62 not blocked by the insulating sheet 31 will also change. Moreover, since the dielectric constants of the insulating sheet 31 and air are significantly different (the dielectric constant of the insulating sheet is significantly greater than the dielectric constant of air), when the direct facing area between the first electrode sheet and the second electrode sheet changes, the capacitance of the variable capacitor 6 will also change.

[0026] When the rocker 5 is shaken, the utility model can drive the rocker arm 4 to rotate, and the rocker arm 4 drives the dial head 43 to swing, and the dial head 43 drives the slider 3 and its insulating sheet 31 to move back and forth; and because the variable capacitor 6 includes a first electrode sheet 61 and a second electrode sheet 62 corresponding to each other, the first electrode sheet 61 and the second electrode sheet 62 are respectively electrically connected to the circuit board 1, and the insulating sheet 31 is inserted between the first electrode sheet 61 and the second electrode sheet 62, and can move back and forth between the first electrode sheet 61 and the second electrode sheet 62, therefore, the first electrode sheet 61 and the second electrode sheet 62 of the variable capacitor 6 of the utility model are stationary, and will not be relatively displaced with the rotation of the rocker arm 4, but rely on the movement of the insulating sheet 31 of the slider 3 to change the capacitance of the variable capacitor 6, so that the capacitive rocker 5 potentiometer outputs a corresponding induction signal. It can be seen that the capacitive rocker 5 potentiometer of the present invention has the following technical advantages: (1) low power consumption. For example, under a voltage of 3V, the working current of the capacitive rocker 5 potentiometer of the present invention is about 20μA, while the working current of an ordinary carbon film potentiometer is about 300μA, and the working current of a Hall sensor chip is 3-4mA. The power consumption is less than 1 / 10 of an ordinary carbon film potentiometer and less than 1 / 100 of a Hall sensor chip; (2) strong anti-interference ability. The variable capacitor 6 will not be affected by external magnetic fields; (3) low cost. The cost of the variable capacitor 6 is significantly lower than that of the Hall sensor chip and the carbon film potentiometer; (4) high precision. The positions of the first electrode sheet 61 and the second electrode sheet 62 are stationary, which can avoid the vibration phenomenon caused by the reciprocating movement of the electrode sheets. When the insulating sheet 31 of the slider 3 moves back and forth, it will not cause the first electrode sheet 6 1 and the second electrode sheet 62 change, which can avoid the error problem and noise problem in capacitance value induction, so that the precision of the capacitive rocker 5 potentiometer of the utility model is very high; (5) Long service life. On the one hand, since the insulating sheet 31 of the slider 3 is not in contact with the first electrode sheet 61 and the second electrode sheet 62, the insulating sheet 31 of the slider 3 will not cause friction damage to the first electrode sheet 61 and the second electrode sheet 62 during the reciprocating movement. On the other hand, since the first electrode sheet 61 and the second electrode sheet 62 are both stationary, the first electrode sheet 61, the second electrode sheet 62 and the circuit board 1 can be directly welded or connected with the static contact point, thereby abandoning the wire connection method and the dynamic contact connection method in the prior art, so that the service life of the capacitive rocker 5 potentiometer of the utility model is very long.

[0027] like Figure 4-Figure 6As shown, two second electrode sheets 62 of the variable capacitor 6 are arranged in parallel, with a gap between the two second electrode sheets 62, the first electrode sheet 61 faces the two second electrode sheets 62 at the same time, the first electrode sheet 61 and one of the second electrode sheets 62 form a variable capacitor, and the first electrode sheet 61 and the other second electrode sheet 62 form another variable capacitor. During the reciprocating movement of the insulating sheet 31, the capacitance of the two variable capacitors can be changed at the same time. Figure 4 As shown, the first electrode sheet 61 has a first end and a second end, wherein one second electrode sheet 62 is located below the first end of the first electrode sheet 61, and the other second electrode sheet 62 is located below the second end of the first electrode sheet 61, and the two second electrode sheets 62 are separated by a gap, and the length of the insulating sheet 31 is equivalent to 1 / 4 to 1 / 2 of the length of the first electrode sheet 61; when the insulating sheet 31 is translated toward the first end of the first electrode sheet 61, the direct facing area between the first electrode sheet 61 and the second electrode sheet 62 below the first end of the first electrode sheet will gradually decrease, and the first electrode sheet 61 and the second electrode sheet 62 below the first end of the first electrode sheet will gradually decrease. The direct facing area of ​​the second electrode sheet 62 below the two ends will gradually increase; conversely, when the insulating sheet 31 moves toward the second end of the first electrode sheet 61, the direct facing area of ​​the first electrode sheet 61 and the second electrode sheet 62 below the first end of the first electrode sheet will gradually increase, while the direct facing area of ​​the first electrode sheet 61 and the second electrode sheet 62 below the second end of the first electrode sheet will gradually decrease; it can be seen that during the reciprocating movement of the insulating sheet 31, the capacitance of the two variable capacitors can be changed at the same time, and the simultaneous sensing of the two variable capacitors can significantly improve the sensitivity and accuracy of the sensing.

[0028] like Figure 4-Figure 6 As shown, the circuit board 1 is provided with a sensing chip 11, and the first electrode sheet 61 and the second electrode sheet 62 of the variable capacitor 6 are electrically connected to the sensing chip 11 respectively, and the sensing chip 11 is used to output a corresponding sensing signal according to the capacitance of the variable capacitor. Preferably, an amplifier circuit is provided between the variable capacitor 6 and the sensing chip 11 to amplify the voltage signal output from the variable capacitor 6 to the sensing chip 11.

[0029] like Figure 2-Figure 6As shown, the second electrode sheet 62 of the variable capacitor 6 is attached to the circuit board 1, the first electrode sheet 61 is fixedly installed on the lower side of the base 2 and is located above the second electrode sheet 62, one end of the first electrode sheet 61 is connected to an electrode sheet contact 611, and a circuit board contact 12 is provided on the circuit board 1, and the electrode sheet contact 611 is in contact and electrically connected with the circuit board contact 12. The first electrode sheet 61 of the variable capacitor 6 is provided with a plurality of rivet holes 612, and the lower side of the base 2 is provided with a plurality of rivet posts 22 corresponding to the rivet holes, and the rivet posts 22 are inserted into the rivet holes 612 from top to bottom and rivet and fix the first electrode sheet 61. In this way, the first electrode sheet 61 can be firmly fixed by the base 2, and the first electrode sheet 61 and the electrode plate 1 can be stably statically contacted and electrically connected by the way that the electrode sheet contact 611 is in contact and electrically connected with the circuit board contact 12. Preferably, the electrode sheet contact 611 of the first electrode sheet 61 is an elastic structure, which can be elastically pressed onto the circuit board contact 12, so as to best improve the electrical connection stability.

[0030] like Figure 2-Figure 6 As shown, the first electrode sheet 61 of the variable capacitor 6 is parallel to the second electrode sheet 62, and the gap between the first electrode sheet 61 and the second electrode sheet 62 is 0.25-0.3 mm. The insulating sheet 31 does not contact the first electrode sheet 61 and the second electrode sheet 62. The insulating sheet 31 is parallel to the first electrode sheet 61 and the second electrode sheet 62 respectively, and when the insulating sheet 31 moves back and forth, the distance between the insulating sheet and the first electrode sheet 61 or the second electrode sheet 62 does not change.

[0031] like Figure 2-Figure 6 As shown, the seat body 2 is respectively provided with a slide groove 21 along the front-to-back direction and the left-to-right direction, a slider 3 is respectively provided in the two slide grooves 21, and the two sliders 3 are respectively connected with an insulating sheet 31; the rocker arm 4 includes an upper rocker arm 41 and a lower rocker arm 42, the lower rocker arm 42 is located at the lower side of the upper rocker arm 41, and a dial head 43 is respectively provided on the lower side of one end of the upper rocker arm 41 and the lower rocker arm 42, and each dial head 43 is respectively matched with a slider 3; the variable capacitor 6 is provided with two, one of which is matched with the insulating sheet 31 of one slider 3, and the other variable capacitor 6 is matched with the insulating sheet 31 of the other slider 3.

[0032] like Figure 2 , Figure 4-Figure 6 As shown, the seat body 2 is provided with a pressing hole 23, and a pressing block 24 is slidably installed inside the pressing hole 23. A pot-shaped button 13 corresponding to the pressing block 24 is provided on the circuit board 1, and the other end of the lower rocker arm 42 is pressed and matched with the pressing block 24.

[0033] like Figure 1 , Figure 2 , Figure 4-Figure 6 As shown, the rocker potentiometer also includes a bottom shell 7, a sliding plate 8, a spring 9 and an upper cover 10. A cavity 25 is provided on the seat body 2. The sliding plate 8 can be installed in the cavity 25 of the seat body in a liftable manner. A cavity spring seat 251 is provided in the cavity 25 of the seat body. A sliding plate spring seat 81 is provided on the lower side of the sliding plate 8. The lower end of the spring 9 is installed on the cavity spring seat 251, and the upper end of the spring 9 is installed under the sliding plate spring seat 81. The side of the cavity 25 of the seat body is connected to a plurality of guides. The guide foot 26 has a guide groove 261 on its inner wall, and the side of the sliding plate 8 is connected with a guide strip 82 corresponding to and slidably fitting with the guide groove 261; the upper cover 10 covers the seat body, and the upper rocker arm 41 and the lower rocker arm 42 are installed on the lower side of the upper cover 10, and the rocker 5 passes through the upper cover 10 and is connected with the upper rocker arm 41 and the lower rocker arm 42; the bottom shell 7 is installed on the lower side of the magnetic induction circuit board 1, and the end of the bottom shell 7 is provided with a bottom shell 7 connector for connecting the upper cover 10.

[0034] like Figure 1 , Figure 2 , Figure 4-Figure 6 As shown, the upper rocker arm 41 includes an upper rocker arm body and an upper rocker arm shaft 44 connected to the two ends of the upper rocker arm body, one of the upper rocker arm shafts 44 is integrally connected with a dial head 43, an axial hole for the upper rocker arm shaft 44 to rotate is provided between the seat body 2 and the upper cover 10, an upper rocker arm middle hole 46 for the rocking rod 5 to pass through is provided in the middle of the upper rocker arm body, and the inner wall of the upper rocker arm middle hole 46 is rotatably connected to the rocking rod 5; the lower rocker arm 42 includes a lower rocker arm body and a lower rocker arm shaft 45 connected to the two ends of the lower rocker arm body, one of the lower rocker arm shafts 45 is integrally connected with the dial head 43, and the other lower rocker arm shaft 45 is press-fitted with the pressing block 24, an axial hole for the lower rocker arm shaft 45 to rotate is provided between the seat body 2 and the upper cover 10, a lower rocker arm middle hole 47 for the rocking rod 5 to pass through is provided in the middle of the lower rocker arm body, and the inner wall of the lower rocker arm middle hole 47 is rotatably connected to the rocking rod 5.

[0035] like Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the bottom shell 7 includes a clamping ring 71 and a buckle ear 72 extending upwardly and arranged at both ends of the bottom shell 7, and a clamping head 101 and a buckle platform 102 are respectively provided at both ends of the upper cover 10. The clamping ring 71 is snap-fitted with the clamping head 101, and the buckle ear 72 is buckled on the buckle platform 102 after being bent.

[0036] 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. A rocker potentiometer with a variable capacitor, characterized in that: It includes a circuit board, a base, a slider, a rocker arm, a rocker and a variable capacitor; the base is installed on the upper side of the circuit board, the base is provided with a slide groove, the slider can be slidably installed in the slide groove of the base, and the slider is connected to an insulating sheet; the rocker arm is rotatably installed on the base, the rocker arm is provided with a dial head for moving the slider back and forth, and the rocker is connected to the rocker arm; the variable capacitor includes a first electrode sheet and a second electrode sheet corresponding to each other, the first electrode sheet and the second electrode sheet are electrically connected to the circuit board respectively, the insulating sheet is inserted between the first electrode sheet and the second electrode sheet, and can move back and forth between the first electrode sheet and the second electrode sheet, and can change the area directly facing the first electrode sheet and the second electrode sheet during the movement to change the capacitance of the variable capacitor; the second electrode sheet of the variable capacitor is attached to the circuit board, the first electrode sheet is located above the second electrode sheet, and the first electrode sheet is parallel to the second electrode sheet.

2. The rocker potentiometer with a variable capacitor according to claim 1, characterized in that: The variable capacitor has two second electrode sheets arranged in parallel, the first electrode sheet faces the two second electrode sheets at the same time, the first electrode sheet and one of the second electrode sheets form a variable capacitor, and the first electrode sheet and the other second electrode sheet form another variable capacitor. During the reciprocating movement of the insulating sheet, the capacitance of the two variable capacitors can be changed simultaneously.

3. The rocker potentiometer with a variable capacitor according to claim 1, characterized in that: The circuit board is provided with a sensing chip, the first electrode sheet and the second electrode sheet of the variable capacitor are electrically connected to the sensing chip respectively, and the sensing chip is used to output a corresponding sensing signal according to the capacitance of the variable capacitor.

4. The rocker potentiometer with a variable capacitor according to claim 1, characterized in that: The first electrode sheet of the variable capacitor is fixedly installed on the lower side of the base, one end of the first electrode sheet is connected to an electrode sheet contact, a circuit board contact is provided on the circuit board, and the electrode sheet contact is in contact and electrically connected with the circuit board contact.

5. The rocker potentiometer with a variable capacitor according to claim 4, characterized in that: The first electrode sheet of the variable capacitor is provided with a plurality of riveting holes, and the lower side of the base body is provided with a plurality of riveting posts corresponding to the riveting holes. The riveting posts are inserted into the riveting holes from top to bottom and rivet and fix the first electrode sheet.

6. The rocker potentiometer with a variable capacitor according to claim 1, characterized in that: The gap between the first electrode sheet and the second electrode sheet of the variable capacitor is 0.25-0.3 mm, the insulating sheet does not contact the first electrode sheet and the second electrode sheet, the insulating sheet is parallel to the first electrode sheet and the second electrode sheet respectively, and when the insulating sheet moves back and forth, the distance between the insulating sheet and the first electrode sheet or the second electrode sheet does not change.

7. The rocker potentiometer with a variable capacitor according to any one of claims 1 to 6, characterized in that: The seat body is respectively provided with a slide groove along the front-to-back direction and the left-to-right direction, and a slider is respectively provided in the two slide grooves, and the two sliders are respectively connected to an insulating sheet; the rocker arm includes an upper rocker arm and a lower rocker arm, and the lower rocker arm is located at the lower side of the upper rocker arm, and a dial head is respectively provided on the lower side of one end of the upper rocker arm and the lower rocker arm, and each dial head is respectively matched with a slider; the variable capacitor is provided with two, one of which is matched with the insulating sheet of one slider, and the other variable capacitor is matched with the insulating sheet of the other slider.

8. The rocker potentiometer with a variable capacitor according to claim 7, characterized in that: The seat body is provided with a pressing hole, a pressing block is slidably installed in the pressing hole, a pot piece button corresponding to the pressing block is provided on the circuit board, and the other end of the lower rocker arm is pressed and matched with the pressing block.

9. The rocker potentiometer with a variable capacitor according to claim 7, characterized in that: The rocker potentiometer also includes a bottom shell, a sliding plate, a spring and an upper cover. A cavity is provided on the base body, the sliding plate can be installed in the cavity of the base body in a liftable manner, a cavity spring seat is provided in the cavity of the base body, a sliding plate spring seat is provided 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; a plurality of guide feet are connected to the side of the cavity of the base body, 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 bar corresponding to the guide groove and slidingly matched; the upper cover is covered on the base body, and the upper rocker arm and the lower rocker arm are installed on the lower side of the upper cover, 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 for connecting the upper cover.

10. The rocker potentiometer with a variable capacitor according to claim 9, characterized in that: The upper rocker arm comprises an upper rocker arm main body and an upper rocker arm rotating shaft connected to the two ends of the upper rocker arm main body, one of the upper rocker arm rotating shafts is integrally connected with a dial head, an axial hole for the upper rocker arm rotating shaft to rotate is provided between the seat body and the upper cover, an upper rocker arm middle hole for the rocker arm to pass through is provided in the middle part of the upper rocker arm main body, and the inner wall of the upper rocker arm middle hole is rotatably connected to the rocker; the lower rocker arm comprises a lower rocker arm main body and a lower rocker arm rotating shaft connected to the two ends of the lower rocker arm main body, one of the lower rocker arm rotating shafts is integrally connected with a dial head, and the other lower rocker arm rotating shaft is press-fitted with a pressing block, an axial hole for the lower rocker arm rotating shaft to rotate is provided between the seat body and the upper cover, a lower rocker arm middle hole for the rocker arm to pass through is provided in the middle part of the lower rocker arm main body, and the inner wall of the lower rocker arm middle hole is rotatably connected to the rocker.

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