JP2002137174A5 - - Google Patents

Claims (3)

Cylinder provided in the main body, a piston supported in the cylinder so as to be able to reciprocate, a driver blade mounted on the lower side, a pressure accumulation chamber provided around the cylinder for storing compressed air, and an upper part of the cylinder A main valve that selectively communicates the inside of the cylinder and the accumulator chamber or the inside of the cylinder with the atmosphere in accordance with the ascending operation and the descending operation, a handle that is formed to extend substantially perpendicular to the peripheral wall of the cylinder, and the handle And a trigger valve that raises or lowers the main valve by controlling the supply and discharge of compressed air to and from the upper surface of the main valve, and operates the trigger valve to raise the main valve and store the pressure in the cylinder An air nailing machine that introduces compressed air into a cylinder in communication with a cylinder and drives a piston to strike and drive a nail with a driver blade.
An air nailer characterized in that a part of the compressed air introduced into the cylinder or a part of the compressed air driving the main valve is discharged through an expansion chamber formed along the longitudinal direction of the handle. . The air nailer according to claim 1, wherein the exhaust hole of the handle is provided along a direction not parallel to the longitudinal direction of the handle . The expansion chamber is divided into at least two expansion chambers, at least two throttle holes are provided before and after the two expansion chambers, and the area of the throttle holes is gradually reduced toward the exhaust hole. The air nailer according to claim 1 or 2.