Linkage Mechanism between Trigger Valve and Control Valve in Pneumatic Nail Guns

A linkage mechanism between a trigger valve and a control valve in a nail gun, the nail gun comprising a main body, a safety rod, the trigger valve and an outer trigger, the control valve and the trigger valve being mounted in the main body, the control valve comprising a valve plug adjoining the safety rod, the outer trigger being adjacent to the trigger valve, a valve stem of the trigger valve being extended in the outer trigger, the linkage mechanism comprising:

• an inner trigger pivotably connected to a bottom end of the valve stem;
• and
• a rod member, one end of the rod member being slidably at a position near to the outer trigger and another end of the rod member being connected between the valve plug and the safety rod with an arm, a stopping portion being formed at a middle portion of the rod member, the stopping portion being configured for pressing the outer trigger so as to drive the inner trigger to push the rod member, the arm, the valve plug and the safety rod to move along a nail driving direction of the nail gun,
• wherein the valve stem is pressed by the inner trigger when the outer trigger is triggered, the valve stem being a pivot of the inner trigger when the inner trigger pushes the stopping portion, the stopping portion being another pivot of the inner trigger when the rod member stops moving and the inner trigger drives the valve stem.