Impact device for an electric nail gun

An impact device adapted for use on an electric nail gun, the electric nail gun including a supporting frame, a nail passage formed in the supporting frame and extending along an axis, a flywheel disposed pivotally on the supporting frame, a swing arm disposed pivotally on the supporting frame, and a driving unit for driving the swing arm to rotate toward or away from the flywheel, said impact device comprising:

• a sliding block adapted to be movable relative to the supporting frame along the axis between a pre-firing position distal from the nail passage, and a firing position proximate to the nail passage;
• a nail striker rod connected to said sliding block and adapted to align with the nail passage;
• and
• an impact block disposed floatably on said sliding block and movable relative to said sliding block in a gravity direction perpendicular to the axis such that, when rotating toward the flywheel, the swing arm contacts and pushes said impact block to press against the flywheel, so as to move said impact block along the axis, thereby driving movement of said sliding block from the pre-firing position to the firing position, which results in movement of said striker rod in the nail passage.