Safety device for trigger mechanisms, in particlar for firearms

Safety device for trigger mechanisms for firearms having a body comprising a trigger, a striking mass pivoted to the body of the firearm by means of a first pivot, a sliding element slidably formed on the firearm body, and an elastic firing element having a first end associate with said striking mass by means of a second pivot, a second end associated with the firearm body by means of a third pivot, and a generally longitudinal axis between said ends;

• said striking mass having at least two positions;
• a first cocking position and a second percussion position;
• said elastic element being directly and rigidly secured to said second pivot and acting on said second pivot with a force, said force having a component adapted to actuate said striking mass in order to move it in a percussion direction from said cocking position to said percussion position;
• wherein said third pivot of said elastic element is disposed on said sliding element and can substantially controllably slide on the firearm body so as to re-position at least said third pivot with respect to said first pivot and vary the angle formed by the axis of said elastic element and said component of said force;
• thereby defining a safety position of said elastic element wherein said component of said force is at least cancelled, said elastic element resting on said sliding element during transfer from said cocking position to said safety position.