Patent ID: 6401345
Filing Date: 2002-06-11
Classification: B26F

Abstract:
A tool head of a hand held pneumatic punch which has a main body and a movable shaft movable in an axial direction, said toll head comprising:a fixed seat secured to the main body; and a movable seat secured to the movable shaft; wherein said fixed seat comprises an upright J-shaped member with a first sidewall and a second sidewall, and defines an aperture in the first sidewall to permit the movable shaft to extend therethrough, and has a first receiving recess and a second receiving recess respectively defined in the first and second sidewalls, a first and a second punch pin are respectively received in the first and the second receiving recess with two resilient elements respectively provided therearound, and wherein said movable seat comprises an inverted J-shaped member mated with the fixed seat, said movable seat defining: a screw hole therein corresponding to the aperture of the fixed seat so that the screw hole threadingly receives a threaded end of the movable shaft that extends through the aperture of the fixed seat; a first discharging passage and a second discharging passage corresponding to the first and second punch pins respectively, the first discharging passage having a first guide cylinder and a second guide cylinder, the second discharge passage having a first guide cylinder and a second guide cylinder; a first transverse slot substantially perpendicular to the first discharging passage and in communication with the first discharging passage; and a second transverse slot substantially perpendicular to the second discharging passage and in communication with the second discharging passage.