ADJUSTABLE HYSTERESIS DRIVER

摘要

The invention relates to an adjustable hysteresis driver comprising a mechanically driven rotor part (5) located at the input end and/or a stator part (7', 7"), an armature part (8) which is located at the output end and is connected in a torsion-proof manner to a shaft (4), and a hysteresis part (9) that is connected to the armature part (8). The stator part (7', 7"") is provided with at least one solenoid (7a) or permanent magnet (18), by means of which a magnetic flux can be induced in the rotor part (5) and/or the stator part (7', 7""), while the transmissible torque of the hysteresis driver can be electromagnetically or electromechanically adjusted. The aim of the invention is to create an improved adjustable hysteresis driver. Said aim is achieved by the fact that the hysteresis driver is formed by a hysteresis clutch or a hysteresis brake while being equipped with an active means for creating a fail safe function, said active means ensuring torque transmission between the rotor part (5) of a hysteresis clutch or the stator part (7"") of a hysteresis brake and the armature part (8) with the aid of a mechanical clutch or the effect of a permanent magnetic force when the power supply for the solenoid (7a) is interrupted.