Electromechanical drive unit e.g. for vehicle braking system, has brake engagement magnet arrangement with permanent magnet and electromagnet that influences magnetic field generated by permanent magnet

摘要

The unit has an electric motor (1) and a brake (2) that interacts with the motor and that is engaged with and disengaged from the motor's rotor (5), or a part (6) that interacts with the rotor, by a magnet arrangement. The magnet arrangement (3) consists of a permanent magnet (9) and an electromagnet (10,11) that influences the magnetic field generated by the permanent magnet.