Assembly of a power stapler

摘要

A trigger assembly for a power stapler includes a U-shaped trigger member pivotally connected to the power stapler and having two inclined and elongated slots in the two plates thereof. A pressing member has a flange extending from one of two surfaces thereof and an aperture is defined through the pressing member. The pressing member has two lugs so that the pressing member is pivotally between the two plates of the trigger member. A pin movably extends through the slots in the trigger member and the two lugs. The pressing member is slightly lifted within the slots when the piston rod of the power stapler inserted into the aperture for the single shoot so that the pressing member is not returned to its original position except the safety member is removed from the pressing member.