Brush assembly having multi-piece brush holders for an electric motor

An electric power tool comprising a housing and an electric motor housed within the housing, the electric motor comprising:

• a stator;
• an armature rotatably received within the stator, the armature having an armature shaft on which a commutator is mounted;
• and
• a brush assembly disposed around the commutator and having a first side facing the stator and a second side opposite the first side, the brush assembly comprising a brush card mount having a plurality of openings, a plurality of brushes in sliding contact with the commutator to supply electric current to the commutator, and a plurality of thermally-conductive brush holders arranged to support the plurality of brushes around the commutator, wherein each brush holder comprises:
• a base piece disposed between the first side of the brush assembly and the stator;
• and
• a main piece including a brush-holder portion and two side flat portions, wherein the brush-holder portion is shaped to be axially received through a respective one of the plurality of openings of the brush card mount from the first side of the brush assembly and protrude over the brush card mount on the second side of the brush assembly to house a respective one of the plurality of brushes, and wherein the two side flat portions extend from ends of the brush-holder portion substantially parallel to the base piece and are sandwiched between the base piece and the brush card mount in an axial direction of the electric motor.