Hammer drill and / or percussion hammer with linear drive and air cooling.

摘要

Hammer drill and / or percussion hammer, having - an electrodynamic linear drive (11, 12); - a percussion mechanism which has an actuating element (1; 30) movable to and fro by the linear drive (11, 12), a percussion element (3) movable relative to the drive element (1; 30) and a coupling (7; 31-34) acting between the actuating element (1; 30) and the percussion element (3), through which can transmit the motion of the actuating element (1; 30 ) on the percussion element (3); wherein - it is provided a conveying air, which has a movable pump element (13) linearly reciprocating for generating an air flow; - the pump element (13) is coupled with the actuating element (1; 30), such that movement of the actuating element (1; 30) can be transmitted on the pump element (13); - conveying the air pump has a receiving space (14) and an air channel (15); - the pump element (13) is movable to and fro in the pump space (14); - the space of the pump (14) can be put in communication at least temporarily through the air channel (15) to the environment; - the air channel (15) has a suction channel (15a) for admission of air from the environment to the pump chamber (14); characterized in that the air channel (15) additionally has the suction channel (15a) an outlet channel (15b) for output of air from the pump chamber (14) to the environment.