Brush device, in particular a hammer brush device, for an electric motor

摘要

The device has bolts (3), which rotatably support a hammer brush (2), which stands in a rotating direction under a force of a leg spring (10). The spring has a coil (9) that surrounds the bolts, and a coil (9`) adjacent to the brush is supported at a rotatable radial flange (13) of a bush (14) that is rotatably fitted to the bolts. The radial flange of the bush lies adjacent to the brush, where a gap between the brush and the bush is small, such that the coil (9`) of the spring does not slide in the gap.