Blocking assembly, elevator system

A blocking assembly for at least one leaf of an elevator door comprising:

• a translation guide extending along a sliding direction;
• at least one first leaf carriage, slidably mounted to the translation guide between a first position and a second position;
• at least one latch connected to the translation guide and movable between a blocking configuration of said first leaf carriage in an intermediate position between the first position and the second position, wherein said latch intercepts and blocks the first leaf carriage with respect to said guide, and a release configuration of said first leaf carriage, wherein the first leaf carriage is free to slide to the second position;
• return means comprising elastic means and/or counterweight means, of the latch in the blocking configuration;
• first coupling means connected to the first leaf carriage and to the latch so that:
• i) when the first carriage is in the first position, said coupling means are mutually coupled to keep the latch in the release configuration, in contrast to an action of the return means;
• ii) when the carriage is in the intermediate position, said coupling means are uncoupled so that the latch is moved by the return means to the blocking configuration;
• a second leaf carriage mounted to the translation guide, wherein the latch is movable between a blocking configuration of said second leaf carriage in an intermediate position of the second leaf carriage, and a release configuration of said second leaf carriage in which the second leaf carriage is free to slide along the translation guide to a second position with a movement opposite the movement of the first leaf carriage;
• wherein
• the latch and the first leaf carriage comprise first complementary engagement elements which, in the blocking configuration, cooperate to carry out said blocking, and, in the release configuration, do not interact with each other or lie mutually spaced in a transverse or orthogonal direction with respect to the sliding direction;
• and wherein
• the latch and the second leaf carriage comprise second complementary engagement elements, which, in the blocking configuration, cooperate to carry out the aforesaid blocking, and, in the release configuration, do not interact with each other or lie mutually spaced, in a transverse or orthogonal direction with respect to the sliding direction.