Patent ID: 8836198
Filing Date: 2014-09-16
Classification: H01R

Abstract:
1. A brush holder unit, comprising: an insulating base, which is made of an insulating material, having a protrusion and a recess on opposite sides, and further having two slots, each of which has an end connected to opposite ends of the recess and an opposite end at an edge of the insulating base; a brush frame, which is made of a conductive material, having a main body and two branches projected from opposite ends of the main body, wherein the main body is received in the recess of the insulating base, and the branches extend out of the insulating base through the slots; and two carbon brushes provided on the branches of the brush frame; wherein each of the slots of the insulating base has a first end at the edge of the insulating base and a second end connected to an end of the recess, and a width at the first end is greater than a width at the second end; and wherein the slot has a concave sidewall at the first end that the width at the first end is greater than the width at the second end.