Abstract: A tab lock opening mechanism comprises at least a main rotor, a cylinder body with the main rotor passing through the cylinder body, a rotor supplement, a transmission cam, a tab with an internal face and an external face, and a nut, where the main rotor connects to the rotor supplement through an interior of the cylinder body, the transmission cam being placed coaxially to the rotor supplement, and the tab being placed coaxially to the transmission cam and transferring a rotation thereof to the tab by a transmitting pin.

Abstract: The device object of the invention comprises at least a main rotor (1), a cylinder body (2) with the main rotor (1) passing through said cylinder body (2), a rotor supplement (4), a transmission cam (8), a tab (14) with an internal face (14i) and an external face (14e), and a nut (15), where the main rotor (1) connects to the rotor supplement (4) through the interior of the cylinder body (2), the transmission cam (8) being placed coaxially to the rotor supplement (4), and the tab (14) coaxially to the transmission cam (8), transferring its rotation to the tab (14) by means of a transmitting pin (11, 11?).