SHOCK-AND-RELIEF MECHANISM OF DOUBLE ACTION FOR FIREARMS

摘要

Double-action firing mechanism for semi-automatic firearms (10) with spring-loaded bolt (12) having a cam surface (28), rotating sear (46) to hold the trigger (20) in the cocked position, trigger pull (26) connected to axis of rotation (54) on the trigger (24). The trigger rod is provided with a cam pin (30) for shifting the trigger rod to the lower position when the bolt moves backwards during firing. When the sear holds the cocked trigger, the second finger (62) on the trigger is engaged with the single-acting trigger axis (56) on the sear and rotates the sear when the trigger is pulled to release the trigger. The cam pin also moves the trigger down when the shutter is stationary and the trigger is activated. The trigger has a notch (60), which includes a double-acting trigger axis (58) on the trigger, due to which the trigger pull rotates the trigger in the direction of the platoon when the trigger is pressed. As a result of this movement, the trigger throat moves in the direction from the double-acting trigger axis to release the trigger when the trigger is pulled in the direction of the double-acting trigger position before the trigger reaches the platoon position. The international search report was published 2004.07.08.