Air spring hammer mechanism for a hammer and / or hammer drill with a short piston

摘要

An air spring hammer mechanism for a hammer and / or rotary hammer has an axially reciprocable drive piston (1) with a guide sleeve (4) and a piston head (5) carrying the guide sleeve (4). In an impact operation, an impact piston (7) with its piston head (8) can be moved axially in the guide sleeve (4 of the drive piston (1) that, finally, in idle mode, the percussion piston (7) is no longer axially movable in the guide sleeve (4), but essentially by a fixed part of the percussion mechanism housing (10, 16) be built, whereby its mass and the vibrations caused by the movement of the drive piston (1) in impact and idle operation can be reduced.