Patent ID: 8342375
Filing Date: 2013-01-01
Classification: B25C

Abstract:
1. A nailer, comprising: a housing comprising an elongated grip portion extending in a longitudinal direction and a nozzle portion; a motor at least partially disposed in the elongated grip portion of the housing, the motor having a motor shaft wherein a longitudinal axis of the motor shaft is generally aligned with the longitudinal direction of the elongated grip portion of the housing; a battery pack for powering the motor; a striking device for striking a nail at least partially disposed in the nozzle portion of the housing where a longitudinal axis of the striking device is generally perpendicular to the longitudinal direction of the elongated grip portion of the housing; and a transmission mechanism which translates rotating motions of the motor shaft into periodic impact motions upon the striking device and allows the striking device to be driven with reciprocating movements to repeatedly strike the nail, wherein the transmission mechanism comprises a bevel gear which is coupled to the motor shaft, wherein the transmission mechanism comprises an impact assembly and the striking device comprises a striking portion to contact a head of the nail and an impacted portion to be impacted by the impact assembly, wherein the impact assembly comprises a rotary impact member having a rotary axis and at least one impact part which impacts the impacted portion of the striking device periodically, and wherein the impact assembly comprises a rotating shaft driven by the motor, the rotary impact member is mounted on the rotating shaft, two recesses extending in reversed directions are formed on the rotating shaft and the rotary impact member, respectively, an engaging member is arranged in the two recesses, and an energy storing device is mounted between the rotating shaft and the rotary impact member.