Electric power tool

Electric power tool, comprising an external housing (12;

• 42);
• a percussion mechanism (15;
• 45) arranged in the external housing (12;
• 42), a motor (13) for driving the percussion mechanism (15;
• 45);
• a gear unit (14) for connecting the driving motor (13) with the percussion mechanism (15);
• and means for cooling the power tool (11) and including a fan element (19) located in the external housing for generating a cooling air flow (26) in the external housing (12), at least one cooling air channel (18) extending along a longitudinal extent of the percussion mechanism (15) and a cross-section of which has a constriction (21;
• 51), a fresh air channel (31;
• 61) having an intake opening (32;
• 62) for communicating with atmosphere and formed in the external housing (12;
• 42) and a connection opening (33;
• 63) for communicating with the cooling air channel (18;
• 48), the connection opening (33;
• 63) being arranged in an area of the constriction (21;
• 51) of the cooling air channel (18;
• 48).