Patent ID: 6798333
Filing Date: 2004-09-28
Classification: H01C

Abstract:
A variable resistor comprising:a case; a rotor rotatably mounted in said case, said rotor being arranged to be rotationally operated from outside of the case; a substrate provided in said case, said substrate having a collector electrode disposed at an approximately central portion of the surface of the substrate and having an arcuate resistor disposed on the surface of the substrate around said collector electrode so as to be substantially concentric therewith; a slider mounted on said rotor so as to be rotatable together with said rotor; said slider inducing: a base portion with a rear surface being supported by said rotor; an annular arm portion having a bent up portion bent along a bending line corresponding to a diameter of the annular arm portion and arranged to make sliding contact with said arcuate resistor of said substrate; a substantially I-shaped arm portion located inside of the annular arm portion, extending in a direction that is substantially perpendicular to the bending line, and arranged to make contact with said collector electrode; and a folded back portion provided on one end of the base portion which directly connects the annular aim portion and the substantially I-shaped arm portion to the base portion.