Fan a type of prevention for dirt reflux in electric works

摘要

The present invention is intended to reduce the phenomenon that the dust is damaged by the inflow of dust and stone powder into the coil of the rotor assembly in the concrete drilling or crushing environment.;To this end, the present invention is a foreign matter contained in the air exiting the fan 4 through the flow path between the core (2) constituting the rotor assembly (1) and the stator (3) installed outside the core (2) The shield plate 6 surrounding the coil 5 so as not to flow into the coil 5 in front of the core 2 is a foreign material inflow preventing fan of the motor for a power tool integrally formed at the rear of the fan 4. .