Window blind

A window blind, comprising:

• a headrail;
• a covering assembly provided below the headrail, wherein the covering assembly sequentially comprises a plurality of slats and a bottom rail in a direction away from the headrail;
• a lifting mechanism comprising a driving module and a lift cord assembly, wherein the driving module is provided in the headrail;
• the lift cord assembly comprises a first cord and a second cord, wherein an end of the lift cord assembly is operably connected to the driving module, while another end thereof is connected to the bottom rail;
• the lift cord assembly is adapted to be driven by the driving module to be released or retracted, whereby to expand or fold the covering assembly;
• a tilt mechanism comprising a modulation module and a ladder tape, wherein the modulation module is provided in the headrail;
• the ladder tape comprises two warps;
• an end of each of the warps is operably connected to the modulation module, and another end thereof is connected to the bottom rail;
• the slats are positioned between the warps;
• the modulation module is adapted to drive the warps of the ladder tape to create a relative vertical movement below the headrail, whereby to drive the slats and the bottom rail to rotate, switching the slats between an open state, which allows light to pass therethrough, and a closed state, which blocks light;
• when the slats are in the open state, the slats and the bottom rail are parallel to each other, and the bottom rail in such state is defined to be at an initial position;
• when the slats are driven by the modulation module to be switched from the open state to the closed state, the bottom rail is tilted by a first angle relative to the initial position;
• and
• an auxiliary unit provided between the lifting mechanism and the tilt mechanism;
• wherein, when the bottom rail is tilted at the first angle, the auxiliary unit is adapted to be driven by the tilt mechanism, by which the lifting mechanism is concurrently motivated to further release the lift cord assembly, whereby the bottom rail is further tilted at a second angle relative to the initial position, wherein the second angle is greater than the first angle.