Hand-held power tool with a pneumatic percussion mechanism

A hand-held power tool, comprising a pneumatic percussion mechanism (20) defining a central pneumatic mechanism axis (S);

• and a motor (12) for driving the percussion mechanism (20);
• wherein the percussion mechanism (20) includes a guide tube (21) an impact member (23) displaceable in the guide tube (21), a reciprocating driving member (22) for driving the impact member (23), a gas spring (25) located between the driving member (22) and the impact member (23) for transmitting a driving motion of the driving member (22) to the impact member (23), a motor-driven eccentric wheel (17) rotatable about a stationary, with respect to the power tool, axis (D) which is spaced from the percussion mechanism axis (S) in a direction perpendicular to the percussion mechanism axis (S) by a distance (X), and a connection rod (29) eccentrically supported on the eccentric wheel (17) and connected to the driving member (22) for converting a rotational movement of the eccentric wheel (17) into a reciprocating movement of the driving member (22).