Braking mechanism for a movable arm of a movable door wing and corresponding door

Abstract

The invention relates to a braking mechanism (10) for a movable door wing (1) with an electric motor (14) operating as a generator, the at least one drive shaft of which can be rotated by a movement of the door wing (1), and at the terminals thereof, a movement-dependent output voltage is produced, which is applied to an evaluation and control unit (20), and a stop spring (12) which damps a manual opening movement of the door wing (1) between a predetermined opening angle and a maximum opening angle with a constant first damping, and a corresponding door with a braking mechanism of this type. In accordance with to the invention, the evaluation and control unit (20) performs a pulse width modulation (PWM) of the motor current cooperating with the output voltage and establishes an effective sequence of braking force, which generates a variable second damping of the opening movement of the door wing (1), so that the door wing (1), when released, stops upon reaching the maximum opening angle.

Dependencies are inferred from the claim text.