Power tool with hammer mechanism

A power tool with a hammer mechanism, the power tool comprising:

• a housing;
• a hollow spindle located in the housing;
• a hammering unit including a piston reciprocatingly mounted within the spindle;
• a swashplate drive unit for driving the piston reciprocatingly, the swashplate drive unit including a swashplate finger engaged with the piston;
• the piston including a through opening substantially perpendicular to a longitudinal axis of the piston at a rear end, a free end of the swashplate finger being received directly in the through opening of the piston, at least a part of outer surface of the free end of the swashplate finger contacting at least part of an inner surface of the through opening.

A power tool with a hammer mechanism, the power tool comprising:

• a housing;
• a hollow spindle located in the housing;
• a hammering unit including a piston reciprocatingly mounted within the spindle;
• a swashplate drive unit for driving the piston reciprocatingly, the swashplate drive unit including a swashplate finger engaged with the piston, the piston including a through opening mostly perpendicular to a longitudinal axis of the piston at a rear end, an extra part being added onto the swashplate finger, the swash plate finger received in the through opening of the piston, at least a part of an outer surface of extra part contacting at least a part of inner surface of the through opening.