Patent ID: 6448683
Filing Date: 2002-09-10
Classification: B05D,H01R,H02K,Y10T

Abstract:
A rotor for an electric motor, comprising a rotor shaft, a rotor core, and a commutator, which are disposed coaxially to a longitudinal axis, the rotor core has winding slots with at least one rotor winding disposed therein and a first end face oriented toward the commutator and a second end face remote from the commutator, and the rotor shaft has a first portion located between the rotor core and the commutator and a second portion beginning at the second end face of the rotor core and remote from the commutator, and the commutator has both a connecting end face oriented toward the rotor core and an inner bore coaxial with the longitudinal axis, the winding slots (6), the first end face (8), and the second end face (9) of the rotor core (3), as well as the first portion (12) and the second portion (13) of the rotor shaft (2), are covered with a first sintered epoxy layer (14), and the commutator (7) has at least one indentation (32) on its connecting end face (23) and, beginning at the connecting end face (23), at least one recess (29) extending toward the inner bore (24) in the direction of the longitudinal axis (1), and the first sintered epoxy layer (14), for fixation of the commutator (7), engages the at least one indentation (32), and also engages and filled the space which is formed between the at least one recess (29) and the shaft.