Compressed air nailer with safety valve arrangement

A compressed air nailer comprising:

• a working piston;
• a driving tappet coupled to the working piston and configured for driving in a fastening means during a driving process, wherein compressed air is applied when the driving process is triggered;
• a trigger valve comprising a valve sleeve and a valve pin configured to be guided within the valve sleeve;
• a control line configured to be one of aerated and deaerated by the trigger valve, wherein the one of aeration and deaeration of the control line is configured to trigger the driving process when the valve pin is displaced relative to the valve sleeve into an actuated position;
• a trigger;
• a placing sensor;
• a switching surface coupled to at least one of the trigger and the placing sensor, the switching surface configured to actuate the valve pin;
• an outer sleeve configured to at least partially surround and guide the valve sleeve;
• a safety control chamber, wherein a pressure within the safety control chamber is configured to displace the valve sleeve relative to the outer sleeve between a triggering position and a locked position;
• and
• a safety control valve configured to be controlled by the trigger, wherein the safety control valve controls the one of the aeration and deaeration of the safety control chamber,
• wherein, when the switching surface is located in a switching surface position relative to the outer sleeve, actuation of both the trigger and the placing sensor result in displacement of the switching surface, wherein the switching surface is positioned in the switching surface position such that the switching surface displaces the valve pin into the actuated position when the valve sleeve is positioned in the triggering position, and wherein the switching surface does not displace the valve pin into the actuated position when the valve sleeve is positioned in the locked position,
• wherein when the trigger is actuated, the trigger contacts and displaces the safety control valve such that a connection between the safety control chamber and an aerated housing interior is blocked by the safety control valve.