Patent ID: 6380841
Filing Date: 2002-04-30
Classification: H01C

Abstract:
A variable resistor comprising:a case which is open at a top surface and a bottom surface thereof; a substrate fitted into the lower opening of the case, the substrate including a collector electrode on the top surface thereof and an arcuate resistor disposed around said collector electrode; a rotor rotatably fitted into the top opening of the case; a slider mounted on the bottom surface of the rotor, the slider arranged to make sliding contact with said collector electrode and said arcuate resistor; an annular packing member disposed between the rotor and the substrate, the annular packing member arranged to seal the space therebetween; and a metallic cover having a top plate portion supporting the top surface of the rotor, a hole provided at said top plate portion such that a portion of the rotor is exposed, and a pair of leg portions extending downward along two sides of the case, wherein the metallic cover directly contacts and supports the bottom surface of the case such that the metallic cover is placed on the case from the upper portion of the case and the leg portions thereof are folded inwardly along and in direct contact with the bottom surface of the case and the bottom surface of the substrate.