Patent ID: 8074854

Claim:
A nailing device, comprising: a main body, defining a chamber therein, an opening being defined on a bottom surface of the main body to communicate with the chamber; an actuator, pivotably disposed on the main body, the actuator having a pressing end and a controlling end, the controlling end being received in the chamber; a striking plate, disposed in the chamber, the striking plate being movable between a safety position, a starting position and a striking position, the striking plate having a protrusive end, a controlling groove and a connecting groove, the protrusive end selectively protruding out of the chamber from the opening, the controlling groove being selectively engaged with the controlling end, the connecting groove having a first end and a second end; a leaf spring, disposed in the chamber, the leaf spring having a working section, a thickness of a distal end of the working section being smaller than a length of the connecting groove, whereby the distal end of the working section is movably inserted into the connecting groove between the first and second ends; and a disengaging means for moving the striking plate to the safety position; wherein, when the striking plate locates at the safety position, the protrusive end protrudes out of the chamber from the opening, the controlling end disengages from the controlling groove, and a travel of the actuator does not drive the striking plate to lift; wherein, when the protrusive end is pressed against to sink into the chamber, the striking plate locates at the starting position, and the controlling end engages with the controlling groove, the travel of the actuator drives the striking plate to lift from the starting position to the striking position, and an elastic potential energy of the leaf spring increases as well; wherein, when the striking plate locates at the striking position, the controlling end disengages from the controlling groove, the elastic potential energy of the leaf spring quickly releases to move the striking plate back to the starting position rapidly; wherein, when the striking plate locates at the starting position or the striking position, the distal end of the working section abuts against the first end of the connecting groove; when the striking plate locates at the safety position, the distal end of the working section abuts against the second end of the connecting groove; wherein, when the striking plate moves from the starting position to the safety position, the distal end of the working section relatively slides along the connecting groove, and the elastic potential energy of the leaf spring substantially remains unchanged.