Patent ID: 8584771
Filing Date: 2013-11-19
Classification: B24B,B25F

Abstract:
1. A handheld power tool comprising: an electrical drive motor, which has pole pieces for guiding a magnetic field; a fan wheel for generating a cooling air flow to be guided through a housing of the power tool along a flow course; and an air guide element in the housing which forms a portion of the flow course of the cooling air flow, the air guide element arranged to cover the pole pieces in such a way that the pole pieces are located outside the flow course of the cooling air flow, wherein the air guide element includes an air guide ring into which the cooling air flow enters the housing and an air guide stub extending axially from the air guide ring in the direction of the flow course, the air guide ring and the air guide stub defining an annular chamber that receives a face end of the pole pieces, the annular chamber being bounded radially on the inside by the air guide stub and bounded radially on the outside by the air guide ring and located outside the flow course of the cooling air flow, and wherein the pole pieces are located radially outside the air guide stub and within the annular chamber.