Draw-string mechanism for crossbows

Abstract

The invention relates to the technical field of the athletic equipment, specifically relating to a draw-string mechanism for crossbows comprising a carriage mounted inside the slideway of the crossbow limb, a hook-string board mounted on the carriage, a pull-cord device used to drive the carriage to slide back on the slideway of the crossbow limb and a reset device to draw the carriage to slide forward to its initial position; said pull-cord device includes two pull cords, a pull handle, and pull-cord pulley blocks wherein two pull cords respectively has a corresponding pull-cord pulley block and passes around the pull-cord pulley block with its end fixed inside pull handles. The invention can not only avoid hurting fingers of crossbow operators, but also generate 2-4 fold drawing force to draw string via force-increasing effect of pull-cord pulley blocks, which is very easy to operate and more labor-saving.

Dependencies are inferred from the claim text.