Electric direct-current motor

摘要

An electric D.C. motor, in particular for a cooling fan of a vehicle, has a brush holder. The brush holder has a carrier structure having a plurality of brush cages mounted therein. Brushes, radially displaceable within the brush cages are connected, respectively, to a positive supply terminal and a negative supply terminal. An electric supply connector and a filter for preventing the emission of electromagnetic interference, are associated with the brush holder. Components of the filter, including first and second inductors and at least one capacitor are housed inside the electric supply connector.

主权项

1. Electric D.C. motor, in particular for a cooling fan of a vehicle, comprising:
a brush holder including a carrier structure having, mounted therein, about the axis of rotation of the motor, a plurality of brush cages inside which respective brushes connected, respectively, to a positive supply terminal and a negative supply terminal are radially displaceable; with the brush holder there being associated: an electric supply connector including a body connected laterally to the brush holder, for connection of the brushes to an external voltage source; and a filter for preventing the emission of electromagnetic interference, comprising at least a first and a second inductor connected between said positive and negative supply terminals and the corresponding brushes, and at least one capacitor, wherein the filter is housed inside the electric supply connector, and further comprises another capacitor, said capacitors are arranged parallel to the first and second inductors, on either side, respectively, of the assembly formed by the first and second inductors.