Patent ID: 7180220

Claim:
A motor carbon brush comprising: an insulated holder having a first distal portion, a second distal portion, a first through hole, and at least one second through hole, said first through hole having a first section and a second section, said first section defining an opening at said first distal portion, said second section abutting said first section and being smaller in diameter than said first section, a stepped portion being provided between said first and second sections, said second through hole running through said second distal portion and said stepped portion to define a first opening and a second opening respectively at said second distal portion and said stepped portion; an elongated first electrically conductive member made of electrically conductive material and having a first potion and a second portion, said first conductive member being fixed on said insulated holder, said second portion being located in said second through hole, said first portion running out of said first opening and located outside said second through hole; a resilient member mounted in said second through hole and having at least one contact portion for elastic deformation under pressure; a second electrically conductive member made of electrically conductive material and having a body and at least one insert portion extending outwards from said body, said insert portion being inserted from said second opening into said second through hole and held between said second portion of said first conductive member and said resilient member, said body being located in said first section of said first through hole; a carbon brush located in said second section of said first through hole; a spring connected respectively with said carbon brush and said second conductive member; and a rear cover connected with said first section of said first through hole and pressing against said second conductive member.