Patent ID: 6333580
Filing Date: 2001-12-25
Classification: B60T,H02K

Abstract:
A commutator motor comprising:a brush holder having a brush carrier plate;a commutator having a brush contact surface, said commutator and said brush holder having a mutual end position;a plurality of brushes positioned in said brush holder; anda protective sleeve that is guidably held on an apical face of said brush carrier plate, said protective sleeve encircling said brush contact surface at a first radial distance and comprising a cover area having a plurality of plug-through openings for said plurality of brushes;wherein said protective sleeve is axially movable from a retention position for assembly and an operational final position, wherein said protective sleeve secures said plurality of brushes in the retention position at a second radial distance from said brush contact surface during mutual axial assembly of said commutator and said brush holder, and upon said commutator reaching the mutual end position, said protective sleeve is axially moved to the operational final position and releases said plurality of brushes to extend through said plurality of plug-through openings to contact said brush contact surface.