Potentiometer

Abstract

The invention discloses a potentiometer. The potentiometer comprises a resistive element, an insulation base supporting the resistive element, an electric brush and a rotating handle driving the electric brush to rotate, wherein the resistive element is circular-fan-shaped, a first limiting baffle block and a second limiting baffle block are respectively arranged at two end parts of the resistive element, the electric brush and the rotating handle are installed at the circle center of the resistive element, the section of the electric brush is step-shaped; the thickness of the part, close to the resistive element, of the electric brush is greater than the thickness of part, close to the rotating shaft, of the electric brush; a plurality of raised adjusting gear blocks are arranged between the first limiting baffle block and the second limiting baffle block along the arc-shaped circumferential surface of the insulation base, and a positioning groove positioned above the raised gear adjusting blocks is formed in the rotating handle. The rotating handle drives the electric brush to rotate to adjust the value of resistance, so that unnecessary friction during rotating process of the electric brush is effectively reduced, the raised adjusting gear blocks are used for adjusting and controlling gears, and the second rotating shaft can move up and down relative to the first rotating shaft, so that gear locking and adjusting is realized.

Description

technical field [0001] The invention relates to a potentiometer, in particular to a potentiometer with anti-wear and anti-slip gear. Background technique [0002] The potentiometer is a resistive element with three terminals and the resistance value can be adjusted according to a certain change rule. A potentiometer usually consists of a resistor body and a movable brush. When the brush moves along the resistor body, a resistance value or voltage that has a certain relationship with the displacement is obtained at the output end. During the moving process of the brush, there must be friction between the resistor body and the peripheral components. Long-term friction will easily damage the potentiometer and reduce its service life. After the potentiometer is adjusted in place, it is often impossible to fix it in a certain position. , prone to misoperation during use. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the object of the...

AI Technical Summary

Problems solved by technology

During the moving process of the brush, there must be friction between the resistor body and the peripheral components. Long-term friction will easily damage the potentiometer and reduce its service life. After the potentiometer is adjusted in place, it is often impossible to fix it in a certain position. , easy to misuse during use

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