Range switch

Abstract

The invention provides a range switch composed of a main body, a rotating part and a bottom cover. The main body is provided with a holding area, and magnetic substances are arranged around the innercircumference of the main body; the rotating part is arranged on the main body by a transmission axis, and the side edge of the rotating part is provided with at least one magnetic substance, and thebottom surface is fixedly provided with contact chips; the bottom cover is used for covering the holding area of the main body and comprises at least one electronic component which can contact the contact chips of the rotating part; moreover, the electronic component is provided with resistor elements with different coefficients. After the rotating part is rotated, the rotating part and the magnetic substances arranged around the main body can attract mutually, thereby achieving the goal of providing no-contact fine-tuning output.

Description

technical field [0001] The invention relates to a band switch, in particular to a band switch in which a switch knob uses magnetic attraction for positioning and movement to perform work to achieve functions such as amplification, adjustment, and conversion. Background technique [0002] The conductive principle of the band switch is to directly drive the contact piece to connect the charged end to the non-charged end. However, during the internal use of these switches, there will be dust, moisture, and powder generated by friction between the contact piece and the contact point (resistance substrate). The dirt generated by the action of these substances will increase the unnecessary electrical impedance in the circuit, and in severe cases, the circuit will fail or even be interrupted. Moreover, the existing switch is extremely inconvenient to assemble due to the large number of parts, which increases the assembly steps of the production line and improves the efficiency of th...

AI Technical Summary

Problems solved by technology

[0002] The conductive principle of the band switch is to directly drive the contact piece to connect the charged end to the non-charged end. However, during the internal use of these switches, there will be dust, moisture, and powder generated by friction between the contact piece and the contact point (resistance substrate). The dirt generated by the action of these substances will increase the unnecessary electrical impedance in the circuit, and in severe cases, the circuit will fail or even be interrupted. Moreover, the existing switch is extremely inconvenient to assemble due to the large number of parts, which increases the assembly steps of the production line and improves the efficiency of the circuit. Production cost; moreover, the existing band switch cannot adjust the torque mechanism, so it can be seen that the above-mentioned conventional items still have many deficiencies, which is not a good design and needs to be improved urgently

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