Drive device for the percussive mechanism of a percussion or drill hammer

摘要

A drive device for the percussive mechanism of a percussion or drill hammer contains an angle crank (19), one leg (21) of which is articulated with its outer end on a piston (31) of the percussive mechanism, movable axially to and fro in a guide tube (29). The other leg (20) of the angle crank (19) is mounted with one end eccentric and rotatable on a driven toothed wheel (17) and with its other end in a ball joint (25). <IMAGE>