Patent ID: 6307296
Filing Date: 2001-10-23
Classification: H01R,H02K

Abstract:
A commutator for an electrical machine that has a rotor with a rotor shaft, comprising a cylindrical commutator core of a thermosetting plastic, an axial through bore in said cylindrical commutator core for slipping said commutator core onto the rotor shaft, a connecting end face (23) of said core extending transversely to the through bore, wherein a receiving bore (25) of a greater diameter than said through bore originates at the connecting end face (23) in the commutator core (27) coaxially to the through bore (24) and extends as far as a shoulder (26), and a conical bore (29) adjoins the shoulder (26) with a lesser diameter than that of the receiving bore (25) and said conical bore tapers toward the through bore (24), said through bore (24) has a non-interference fit relative to the circumference of the rotor shaft (2) and for better fixation of the commutator (7) on the rotor shaft (2), at least one indentation (32, 32') is provided on the commutator core (27), said at least one indentation (32, 32') is open in a direction to the receiving bore (25).