Patent ID: RE44344

Claim:
A nailer device, comprising: a housing containing a motor; a striking device having a striking portion for striking a nail and an impacted portion for receiving periodic impact motions; and a transmission mechanism mounted in the housing which translates rotating motions of the motor into the periodic impact motions upon the impacted portion of the striking device; wherein the transmission mechanism comprises an impact assembly which imparts the periodic impact motions upon the striking device, wherein the impact assembly comprises a rotating shaft driven by the motor and a rotary member mounted on the rotating shaft rotatable about a rotary axis and having at least one impact part which periodically contacts the impacted portion of the striking device, wherein two recesses extending in two reversed directions are respectively formed on the rotating shaft and the rotary member, wherein an engaging member is arranged in the two recesses, and wherein an energy storing device is mounted between the rotating shaft and the rotary member.