Patent ID: 7565989

Claim:
A hook device for a nailer comprising: a ring-like hook mounted on a step circular wall of a rear plug of the nailer; a plurality of positioning grooves formed on the step circular wall of the rear plug, the ring-like hook provided with a positioning unit in response to the positioning grooves on the rear plug; a fastener disposed in the step circular wall of the rear plug and employed to fix the rear plug by cooperating with the ring-like hook; the rear plug is assembled to a main body of the nailer and is interiorly formed with a through hole, at an end of the rear plug is provided a step circular wall on which are annularly defined the plurality of positioning grooves; the ring-like hook is provided with the receiving hole in response to the step circular wall of the rear plug and provided with a hook structure at a lateral side thereof, the hook structure is provided with the positioning unit corresponding to the receiving hole, the positioning unit engages in one of the positioning grooves on the step circular wall of the rear plug; the fastener is formed with a connecting hole and a step portion which is employed to insert in the through hole of the rear plug, and the step portion will make the step circular wall of the rear plug slightly bulge out; the hook structure is defined with a positioning threaded hole in response to the receiving hole, the positioning unit includes a pin, a spring and a screw, the pin and the spring are sealed in the threaded hole by the screw in such a manner that the pin is pushed by the spring into one of the positioning grooves on the step circular wall of the rear plug.