LATCHING MECHANISMS FOR TONNEAU COVERS

A truck cover system comprises a side rail configured to be coupled to a side wall of a bed of a truck; a cover removably attached to the side rail and configured to cover the bed of the truck; a latching mechanism attached to the cover and configured to releasably engage the side rail; and a driving assembly configured to drive the latching mechanism. The driving assembly comprises a mount plate coupled with the side rail through a latch attachment; a driving cylinder rotatably coupled with the mount plate; a driving ring releasably coupled with the driving cylinder and configured to rotate together with the driving cylinder; a torsion spring interposed between the driving ring and the mount plate and configured to be driven by the driving ring; and a handle coupled with the driving cylinder and configured to rotate together with the driving cylinder and the driving ring.