Security device for electrical actuatior mechanism for roller shutters.

摘要

Two concentric members of the free wheel (6) placed between the driven shaft of the electric back-geared motor (5) and the drum (2) intended to roll up the sliding panel (1) have associated with them means in the shape of a gradient which activate an electrical contact (24) capable of reversing the direction of rotation of said drum as soon as the free wheel mentioned above starts operating.