Anti-collapse safety closing mechanism for vertical metallic shutters comprises catch able to pivot so as to work together with ring using lever, which is actuated when compensation spring is broken

摘要

Mechanism comprises mobile catch (4) pivoting on flange (11) of reel (1), and static element (5) fixed to fixed shaft (2). Catch is kept away from static element using spring (9) placed around fixation and pivoting axis (X) of catch between catch and flange. Catch can pivot so as to work together with ring (6) using lever (8), which is actuated when compensation spring is broken.