Mechanism for manoeuvring a door, use of a brake in such a mechanism, and method for regulating a driving torque in such a mechanism

摘要

The mechanism has a brake (8) interposed between an electric motor (5) and a crown (4). The brake exerts a braking torque contrary to the motor in a phase of movement of a door. The torque is exerted according to the intensity of torque sustained by the crown due to weight of the door and forces exerted by compensating springs (126, 127) so that the braking torque is increased or decreased. The braking torque is increased and decreased when the torque sustained by the crown (4) tends to move the crown in the direction same as that of the electric motor (5) and tends to move the crown in the direction opposite to that of the motor, respectively. An independent claim is also included for a method for adjusting torque to be exerted by an electric motor in a door operating mechanism.