Brush assembly and mounting arrangement for a portable tool.

摘要

An easily demountable brush assembly for electric motors is utilized in portable electric tools. The assembly includes brush units (49) which when removed from an open end of the motor casing provides ready access to the brush holders for the conventional carbon brush. Each brush unit (49) includes a non-conductive board (22) which is mounted radially with respect to the commutator of the motor. The boards (22) are secured within grooves (53) formed on the inner wall of the motor casing. Fin ally, the open end of the motor casing is supplied with a removable cap containing holding means (59,64) which hold the brush units (49) in position when the cap is secured to the motor by tightening the two screws (58).