Patent ID: 8427027
Filing Date: 2013-04-23
Classification: H01R,H02K,Y10T

Abstract:
1. A brush unit for an electric machine, which comprises: four ring-like board elements stacked together and including two outer board elements and two inner board elements which are rigidly joined by fastening means; wherein the two outer board elements are ring-like printed circuit boards which are electrically connected to one or more brushes; wherein the two inner are board elements are ring-like guide boards made of an electrically insulating material and are arranged between the printed circuit boards, said guide boards having projections and recesses on the sides which face one another, with the projections forming support faces for resting against corresponding support faces of the other guide board; and wherein the recesses in the guide boards complement one another in order to form radial guides into which the brushes, which are electrically connected to the printed circuit boards, are arranged in a radially displaceable manner.