A brush-type rocker potentiometer

Abstract

This utility model discloses a brush-type rocker potentiometer, comprising a body, an upper rocker arm, a lower rocker arm, a rocker, a support, a spring, a slider, a brush, a circuit board, and a fixed bracket. The rocker passes sequentially through the body, the upper rocker arm, and the lower rocker arm and is connected to the lower rocker arm. The lower end of the rocker has an axially oriented central hole. The cylindrical portion of the support is movably inserted into the central hole of the rocker, and the spring is installed inside the cylindrical portion, with its upper end abutting against the rocker. The fixed bracket is connected to the body, and the circuit board is mounted on the fixed bracket. The disc-shaped base of the support passes through the central hole of the circuit board and abuts against the fixed bracket. The swing portions of the upper and lower rocker arms are movably connected to the slider. The circuit board has a carbon film resistor, and the brush is mounted on the lower side of the slider, with the brush contacting and engaging with the carbon film resistor. The rocker and support of this utility model can stably and reliably perform tilting and repositioning operations, and the slider drives the brush to maintain stable and reliable sliding contact with the carbon film resistor.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, and in particular to a brush-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] See patent document CN115280450A, which discloses an operating device comprising: a lever capable of tilting; a planar and strip-shaped resistive element disposed on the surface of a substrate; and a slider that slides on the surface of the resistive element during the tilting operation of the lever, thereby changing the output voltage value. When the lever is in a neutral state, the portion of the resistive element that abuts against the slider has a low-resistance portion with a lower resistance value than other portions. The operating device also includes a housing, a lever, an actuator, a spring, a bracket, a frame, an FPC, and a metal sheet. The actuator has a shaft portion and a base plate portion. The shaft portion is a cylindrical rod-shaped portion inserted into a through hole in the lever. The base plate portion is a disc-shaped portion integrally disposed at the lower end of the shaft portion. The spring, with its shaft portion inserted through the actuator, is assembled together with the actuator into an opening on the bottom side of the lever. The spring applies upward force to the lever and downward force to the base plate portion of the actuator. Therefore, when the tilting operation of the rod performed by the operator is released, the spring causes the bottom plate of the actuator to abut against the upper surface and center of the frame, making the bottom plate horizontal, thereby restoring the rod to a neutral state.

[0004] However, the operating device disclosed in patent document CN115280450A has the following technical problems: Since only the upper end of the spring is assembled into the opening on the bottom side of the rod, while the lower end of the spring is not assembled into the opening on the bottom side of the rod, that is, the outer side of the lower end of the spring is not limited and surrounded. Therefore, on the one hand, the lower end of the spring is prone to lateral swaying, which makes the operation of the rod and the actuator unstable and affects the accuracy of the output voltage value change. On the other hand, during the tilting operation, the bottom of the rod may get stuck in the gap on the side of the spring, causing the operation to be difficult. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a brush-type rocker potentiometer. The support of the rocker potentiometer has a cylindrical part, and a spring is installed inside the cylindrical part of the support. The upper end of the spring abuts against the rocker arm, so that the spring is completely limited and surrounded by the cylindrical part, avoiding the problem of lateral swaying of the spring. This allows the rocker arm and the support to perform tilting and centering operations stably and reliably. The slider drives the brush to make stable and reliable sliding contact with the carbon film resistor, and the voltage value output by the carbon film resistor changes precisely.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a brush-type rocker potentiometer, comprising a body, an upper rocker arm, a lower rocker arm, a rocker arm, a support, a spring, a slider, a brush, a circuit board, and a fixing bracket. The lower side of the body has a cavity and a groove. The upper and lower rocker arms are sequentially installed within the cavity from top to bottom. The rocker arm passes sequentially through the body, the upper rocker arm, and the lower rocker arm and is connected to the lower rocker arm. The lower end of the rocker arm has an axially arranged rocker arm central hole. The support includes a cylindrical portion and a disc-shaped base connected to the bottom end of the cylindrical portion. The diameter of the disc-shaped base is larger than the diameter of the cylindrical portion. The cylindrical part is movably inserted into the central hole of the rocker arm, and the spring is installed inside the cylindrical part, with the upper end of the spring abutting against the rocker arm; the fixed bracket is connected to the main body, and the circuit board is installed on the fixed bracket. The circuit board has a central hole, and the disc-shaped base of the support passes through the central hole and abuts against the fixed bracket; one end of the upper rocker arm and the lower rocker arm is provided with a swinging part, which is movably connected to the slider, and the slider is slidably installed in the groove; the circuit board is provided with a carbon film resistor, and the brush is installed on the lower side of the slider, with the brush contacting and cooperating with the carbon film resistor.

[0007] In the above technical solution, the rocker arm has a central column that extends downward into the upper end of the rocker arm's central hole. The upper end of the cylindrical portion of the support is movably fitted outside the central column, and the upper end of the spring abuts against the lower end of the central column. The outer wall of the upper end of the cylindrical portion of the support is provided with a chamfered groove, and the inner wall of the upper end of the rocker arm's central hole is provided with several protrusions that slide in conjunction with the chamfered groove.

[0008] In the above technical solution, the fixed bracket has a disc-shaped protrusion in the middle, which extends upward into the hole in the circuit board. The height of the disc-shaped protrusion gradually increases from the edge to the center. The disc-shaped base of the support abuts against the disc-shaped protrusion, and the lower edge of the disc-shaped base is an arc surface.

[0009] In the above technical solution, the lower rocker arm is provided with a rocker arm connecting groove in the middle, and the lower end of the rocker arm is rotatably installed in the rocker arm connecting groove; the rocker arm connecting groove is provided with a hole on the side, and the lower end of the rocker arm is provided with a shaft, which is rotatably installed in the hole.

[0010] In the above technical solution, the upper rocker arm has upper rocker arm pivots at both ends, and the lower rocker arm has lower rocker arm pivots at both ends. The cavity wall of the main body has slots for rotatably connecting the upper and lower rocker arm pivots. The brush-type rocker potentiometer also includes a pressing block. The lower side of the main body has a guide groove, and the pressing block is movably installed in the guide groove. The upper end of the pressing block has an arc-shaped groove, and the lower rocker arm pivot at the other end of the lower rocker arm is rotatably disposed in the arc-shaped groove. A dome switch is provided on the circuit board, and the pressing block is pressed and engaged with the dome switch.

[0011] In the above technical solution, the middle of the swing part is provided with a slot vertically, and one side of the slider is provided with a cylindrical insert rod horizontally, which is movably inserted into the slot of the swing part.

[0012] In the above technical solution, the slide groove includes a first slide groove and a second slide groove, and the included angle between the first slide groove and the second slide groove is a right angle. The slider includes a first slider and a second slider. The first slider is slidably installed in the first slide groove, and the second slider is slidably installed in the second slide groove. The upper rocker arm corresponds to and cooperates with the first slider, and the lower rocker arm corresponds to and cooperates with the second slider. The brush includes a first brush and a second brush. The first brush is installed on the lower side of the first slider, and the second brush is installed on the lower side of the second slider. The carbon film resistor sheet of the circuit board is provided in two sets. The first brush contacts and cooperates with one set of carbon film resistor sheets, and the second brush contacts and cooperates with the other set of carbon film resistor sheets. The circuit board is provided with a ribbon cable that extends out of the fixing bracket.

[0013] In the above technical solution, the upper end of the rocker arm has a rocker arm cap, and a silicone cap is fitted over the rocker arm cap; a dustproof decorative cover and a flexible dustproof cover are installed on the body, and the rocker arm passes through the flexible dustproof cover and the dustproof decorative cover.

[0014] The beneficial effects of this invention are as follows: During the tilting process, the rocker arm can drive the upper and / or lower rocker arm to deflect. The upper and / or lower rocker arm then drive the slider to slide via the swinging part. The slider then drives the brush to move. Finally, the brush slides on the surface of the carbon film resistor, outputting a signal indicating a change in voltage value, thereby achieving accurate judgment of the tilting change of the rocker arm. Because the lower end of the rocker arm has an axially provided rocker arm central hole, and the support includes a cylindrical part that is movably inserted into the rocker arm central hole, with a spring installed inside the cylindrical part and its upper end abutting against the rocker arm, the spring is completely confined and limited by the cylindrical part, avoiding the problem of lateral swaying of the spring. This allows the rocker arm and support to perform tilting and repositioning operations stably and reliably. Furthermore, the slider drives the brush to make stable and reliable sliding contact with the carbon film resistor, resulting in accurate voltage value changes output by the carbon film resistor. The disc-shaped base of the support of this utility model passes through the hole in the circuit board and abuts against the fixed bracket. When the rocker and the support are tilted, the spring inside the support is compressed. When the user releases the rocker, the spring inside the support releases its elasticity, which produces a good reset and centering effect on the rocker. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a longitudinal sectional view of the present invention.

[0017] Figure 3 This is a first-view diagram of the dispersed structure of this utility model.

[0018] Figure 4 This is a second-view diagram of the dispersed structure of this utility model. Detailed Implementation

[0019] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figures 1-4As shown, this utility model is a brush-type rocker potentiometer, including a body 1, an upper rocker arm 2, a lower rocker arm 3, a rocker arm 4, a support 5, a spring 6, a slider 7, a brush 10, a circuit board 8, and a fixing bracket 9. The lower side of the body 1 is provided with a cavity 11 and a sliding groove 12. The upper rocker arm 2 and the lower rocker arm 3 are installed sequentially from top to bottom within the cavity 11. The rocker arm 4 passes sequentially through the body 1, the upper rocker arm 2, and the lower rocker arm 3 and is connected to the lower rocker arm 3. The lower end of the rocker arm 4 is axially provided with a rocker arm central hole 41. The support 5 includes a cylindrical part 51 and a disc-shaped base 52 connected to the bottom end of the cylindrical part 51. The diameter of the disc-shaped base 52 is larger than the diameter of the cylindrical part 51. The cylindrical part 51 is movably inserted into the rocker arm. Inside the hole 41, the spring 6 is installed inside the cylindrical part 51, and the upper end of the spring 6 abuts against the rocker arm 4; the fixed bracket 9 is connected to the body 1, the circuit board 8 is installed on the fixed bracket 9, the circuit board 8 has a circuit board central hole 82, the disc-shaped base 52 of the support 5 passes through the circuit board central hole 82 and abuts against the fixed bracket 9; one end of the upper rocker arm 2 and the lower rocker arm 3 is provided with a swing part 21, 31, which is movably connected to the slider 7, and the slider 7 is slidably installed in the slide groove 12; the circuit board 8 is provided with a carbon film resistor 81, and the brush 10 is installed on the lower side of the slider 7, and the brush 10 is in contact with the carbon film resistor 81.

[0021] In the process of tilting the rocker arm 4, the rocker arm 4 can drive the upper rocker arm 2 and / or the lower rocker arm 3 to deflect. The upper rocker arm 2 and / or the lower rocker arm 3 then drive the slider 7 to slide through the swing parts 21 and 31. The slider 7 then drives the brush 10 to move. Finally, the brush 10 slides on the surface of the carbon film resistor 81 and outputs a signal of voltage change, thereby realizing accurate judgment of the tilting change of the rocker arm 4. In this invention, the lower end of the rocker arm 4 has an axially oriented rocker arm central hole 41. The support 5 includes a cylindrical portion 51, which is movably inserted into the rocker arm central hole 41. The spring 6 is installed inside the cylindrical portion 51, with its upper end abutting against the rocker arm 4. Therefore, the spring 6 is completely confined and limited by the cylindrical portion 51, preventing lateral swaying. This allows the rocker arm 4 and the support 5 to perform stable and reliable tilting and centering operations. The slider 7 drives the brush 10 to make stable and reliable sliding contact with the carbon film resistor 81, resulting in precise voltage changes from the carbon film resistor 81. The disc-shaped base 52 of the support 5 passes through the circuit board central hole 82 and abuts against the fixed bracket 9. When the rocker arm 4 and the support 5 are tilted, the spring 6 inside the support 5 is compressed. When the user releases the rocker arm 4, the spring 6 inside the support 5 releases its elasticity, providing a good reset and centering effect for the rocker arm 4.

[0022] like Figures 2-4As shown, the rocker arm 4 has a rocker arm central column 411, which extends downward into the upper end of the rocker arm central hole 41. The upper end of the cylindrical portion 51 of the support 5 is movably sleeved outside the rocker arm central column 411, and the upper end of the spring 6 abuts against the lower end of the rocker arm central column 411. By setting the rocker arm central column 411, the cylindrical portion 51 of the support 5 can be further guided, and the upper end of the spring 6 can be abutted. Preferably, the outer wall of the upper end of the cylindrical portion 51 of the support 5 is provided with a chamfered groove 511, and the inner wall of the upper end of the rocker arm central hole 41 is provided with several protrusions 412 that slide in cooperation with the chamfered groove 511. The chamfered groove 511 matches the shape of the protrusion 412. Through the mutual sliding engagement of the chamfered groove 511 and the protrusion 412, the cylindrical part 51 of the support 5 can be stably raised or lowered within the rocker arm bore 41, and the cylindrical part 51 of the support 5 can be prevented from rotating within the rocker arm bore 41.

[0023] like Figures 2-4 As shown, the fixed bracket 9 has a disc-shaped protrusion 91 in the middle, which extends upward into the hole 82 in the circuit board. The height of the disc-shaped protrusion 91 gradually increases from its edge to its center. The disc-shaped base 52 of the support 5 rests against the disc-shaped protrusion 91, and the lower edge of the disc-shaped base 52 is curved. This structure allows the disc-shaped base 52 of the support 5 to tilt or return to center stably on the disc-shaped protrusion 91.

[0024] like Figure 3 and Figure 4 As shown, the lower rocker arm 3 has a rocker arm connecting groove 32 in the middle, and the lower end of the rocker arm 4 is rotatably installed in the rocker arm connecting groove 32; the rocker arm connecting groove 32 has a hole 321 on the side, and the lower end of the rocker arm 4 has a shaft 42, which is rotatably installed in the hole 321.

[0025] like Figures 2-4As shown, the upper rocker arm 2 has upper rocker arm pivots 22 at both ends, and the lower rocker arm 3 has lower rocker arm pivots 33 at both ends. The cavity 11 of the body 1 has slots 13 on its wall for rotatably connecting the upper rocker arm pivots 22 and the lower rocker arm pivots 33. The brush-type rocker potentiometer also includes a pressing block 15. The lower side of the body 1 has a guide groove 14, and the pressing block 15 is movably installed in the guide groove 14. The upper end of the pressing block 15 has an arc-shaped groove 151, and the lower rocker arm pivot 33 at the other end of the lower rocker arm 3 is rotatably disposed in the arc-shaped groove 151. A dome switch 83 is provided on the circuit board 8, and the pressing block 15 is pressed and engaged with the dome switch 83. When the lower rocker arm pivot 33 presses the pressing block 15, the pressing block 15 can press the dome switch 83, causing the circuit board 8 to output a button signal. The upper end of the pressing block 15 is provided with an arc-shaped groove 151, which allows the dome switch 83 to be pressed even when the lower rocker arm 3 is in a deflected state. Furthermore, the middle of the swing parts 21 and 31 is provided with a slot vertically, and one side of the slider 7 is provided with a cylindrical insert rod, which is movably inserted into the slot of the swing parts 21 and 31.

[0026] like Figures 2-4 As shown, the slide groove 12 includes a first slide groove 121 and a second slide groove 122, with a right angle between the first slide groove 121 and the second slide groove 122. The slider 7 includes a first slider 71 and a second slider 72. The first slider 71 is slidably installed within the first slide groove 121, and the second slider 72 is slidably installed within the second slide groove 122. The upper rocker arm 2 corresponds to and cooperates with the first slider 71, and the lower rocker arm 3 corresponds to and cooperates with the second slider 72. The brush 10 includes a first brush 10 and a second brush 10. The first brush 10 is installed on the lower side of the first slider 71, and the second brush 10 is installed on the lower side of the second slider 72. The carbon film resistor 81 of the circuit board 8 is provided in two sets. The first brush 10 is in contact with one set of carbon film resistor 81, and the second brush 10 is in contact with the other set of carbon film resistor 81. The circuit board 8 is provided with a ribbon cable 84, which extends out of the fixing bracket 9.

[0027] like Figures 1-4 As shown, the upper end of the rocker arm 4 has a rocker arm cap 43, and a silicone cap 44 is fitted over the rocker arm cap 43; a dustproof decorative cover 16 and a flexible dustproof cover 17 are installed on the body 1, and the rocker arm 4 passes through the flexible dustproof cover 17 and the dustproof decorative cover 16. The structure of the rocker arm cap 43 and the silicone cap 44 improves the comfort of operation. The flexible dustproof cover 17 provides a dustproof effect, and the dustproof decorative cover 16 provides both decoration and dustproof effects.

[0028] 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. A brush-type rocker potentiometer, characterized in that: The device includes a main body, an upper rocker arm, a lower rocker arm, a rocker arm, a support, a spring, a slider, a brush, a circuit board, and a fixed bracket. The main body has a cavity and a groove on its lower side. The upper and lower rocker arms are sequentially installed within the cavity from top to bottom. The rocker arm passes through the main body, the upper rocker arm, and the lower rocker arm sequentially and connects to the lower rocker arm. The lower end of the rocker arm has an axially oriented rocker arm central hole. The support includes a cylindrical portion and a disc-shaped base connected to the bottom end of the cylindrical portion. The diameter of the disc-shaped base is larger than the diameter of the cylindrical portion. The cylindrical portion is movably inserted into the rocker arm central hole. The spring... A spring is installed inside the cylindrical part, and the upper end of the spring abuts against the rocker arm; the fixed bracket is connected to the main body, the circuit board is installed on the fixed bracket, the circuit board has a central hole, and the disc-shaped base of the support passes through the central hole and abuts against the fixed bracket; one end of the upper rocker arm and the lower rocker arm is provided with a swinging part, the swinging part is movably connected to the slider, and the slider is slidably installed in the groove; the circuit board is provided with a carbon film resistor, the brush is installed on the lower side of the slider, and the brush contacts and cooperates with the carbon film resistor.

2. The brush-type rocker potentiometer according to claim 1, characterized in that: The rocker arm has a rocker arm central column that extends downward into the upper end of the rocker arm central hole. The upper end of the cylindrical part of the support is movably sleeved outside the rocker arm central column, and the upper end of the spring abuts against the lower end of the rocker arm central column.

3. The brush-type rocker potentiometer according to claim 1, characterized in that: The upper outer wall of the cylindrical part of the support is provided with a chamfered groove, and the upper inner wall of the rocker arm hole is provided with several protrusions that slide in conjunction with the chamfered groove.

4. The brush-type rocker potentiometer according to claim 1, characterized in that: The fixed bracket has a disc-shaped protrusion in the middle, which extends upward into the hole in the circuit board. The height of the disc-shaped protrusion gradually increases from its edge to its center. The disc-shaped base of the support rests on the disc-shaped protrusion, and the lower edge of the disc-shaped base is curved.

5. The brush-type rocker potentiometer according to claim 1, characterized in that: The lower rocker arm has a rocker arm connecting groove in the middle, and the lower end of the rocker arm is rotatably installed in the rocker arm connecting groove; the rocker arm connecting groove has a hole on the side, and the lower end of the rocker arm has a shaft, which is rotatably installed in the hole.

6. The brush-type rocker potentiometer according to claim 1, characterized in that: The upper rocker arm has upper rocker arm pivots at both ends, and the lower rocker arm has lower rocker arm pivots at both ends. The cavity wall of the main body has slots for rotatably connecting the upper and lower rocker arm pivots. The brush-type rocker potentiometer also includes a pressing block. The lower side of the main body has a guide groove, and the pressing block is movably installed in the guide groove. The upper end of the pressing block has an arc-shaped groove, and the lower rocker arm pivot at the other end of the lower rocker arm is rotatably located in the arc-shaped groove. A dome switch button is provided on the circuit board, and the pressing block is pressed and engaged with the dome switch button.

7. The brush-type rocker potentiometer according to claim 1, characterized in that: The middle of the swinging part is provided with a slot vertically, and one side of the slider is provided with a cylindrical insert rod horizontally. The cylindrical insert rod is movably inserted into the slot of the swinging part.

8. The brush-type rocker potentiometer according to claim 1, characterized in that: The slide groove includes a first slide groove and a second slide groove, and the included angle between the first slide groove and the second slide groove is a right angle. The slider includes a first slider and a second slider. The first slider is slidably installed in the first slide groove, and the second slider is slidably installed in the second slide groove. The upper rocker arm is correspondingly engaged with the first slider, and the lower rocker arm is correspondingly engaged with the second slider.

9. The brush-type rocker potentiometer according to claim 8, characterized in that: The brush includes a first brush and a second brush. The first brush is installed on the lower side of the first slider, and the second brush is installed on the lower side of the second slider. The circuit board has two sets of carbon film resistors. The first brush is in contact with one set of carbon film resistors, and the second brush is in contact with the other set of carbon film resistors. The circuit board has a ribbon cable that extends out of the fixing bracket.

10. The brush-type rocker potentiometer according to claim 1, characterized in that: The upper end of the rocker arm has a rocker arm cap, and a silicone cap is fitted over the rocker arm cap; a dustproof decorative cover and a flexible dustproof cover are installed on the main body, and the rocker arm passes through the flexible dustproof cover and the dustproof decorative cover.

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