Patent ID: 7802711

Claim:
A hand-held power tool, comprising: a pneumatic percussion mechanism ( 20 ) defining a central percussion axis (S) and having a guide tube ( 21 ), a driving member ( 22 ) reciprocating in the guide tube ( 21 ), a percussion member ( 23 ) driven by the driving member ( 22 ), and an air spring ( 24 ) located between the driving member ( 22 ) and the percussion member ( 23 ) for transmitting a reciprocating movement of the driving member ( 22 ) to the percussion member ( 23 ); a motor ( 12 ) for driving the percussion mechanism ( 20 ); a motor-driven elongate swashplate member ( 29 ) for reciprocating the driving member ( 22 ); an adjustment device ( 30 ) for adjusting a displacement stroke of the driving member ( 22 ) and including an adjusting member ( 31 ) displaceable along a longitudinal extent of the swashplate member ( 29 ) for adjusting a swashplate angle that determines the displacement stroke of the driving member ( 22 ); and a hub member ( 25 ) for transmitting the stroke movement to the swashplate member ( 29 ), wherein the hub member ( 25 ) is displaceable by the adjusting member ( 31 ) along the longitudinal extent of the swashplate member ( 29 ) relative thereto and wherein the hub member ( 25 ) has a bearing support ( 27 ) through which the swashplate member ( 29 ) is displaceable.