Patent ID: 7042329
Filing Date: 2006-05-09
Classification: H01C,H01H

Abstract:
1. A rotatable variable resistor comprising: a rotary unit including a rotor and a wiper; and a fixed unit including a resistor substrate and an external terminal; wherein one of the rotary unit and the fixed unit is provided with a clicking projection and a non-clicking projection; the other one of the rotary unit and the fixed unit is provided with a clicking engagement portion which is engageable with the clicking projection; a distance from a center of rotation of the rotary unit to a top of the clicking projection is different from a distance from the center of rotation of the rotary unit to a top of the non-clicking projection; the fixed unit further includes a conductive cover integrated with the external terminal; and the clicking projection and the non-clicking projection are provided in the wiper and the clicking engagement portion is provided in the cover.