ROTOR FOR AN ELECTRIC MOTOR

摘要

The invention concerns a rotor for an electric motor, the rotor comprising a rotor shaft (1), a rotor coil (2) and a commutator (3). The rotor coil (2) comprises a coil wire with insulation, particularly lacquered insulation; the commutator (3) is configured as a hook commutator having commutator lamellae (4) and commutator hooks (5) for the coil ends (6) of the rotor coil (2). The coil ends (6) are connected to the inner faces (7, 8) of the respective commutator hook (5) during hot-pressing. It is proposed that at least one inner face (7, 8) of each commutator hook (5) has a surface structure that, on engagement with the respective coil end (6), causes a point- and/or line-stress on the coil end (6), thus resulting in targeted damage, in particular the elimination of the insulation at the coil end (6).