BRUSH-SLIP RING SYSTEM FOR ELECTRICAL ROTARY MACHINES, IN PARTICULAR CURRENT-ENERGIZED SYNCHRONOUS MOTOR

摘要

The invention relates to a brush-slip ring system (2) for electrical rotary machines, in particular current-energized synchronous motors (1) having a rotor (4) and a fixed part, e.g. stator (3) associated with said rotor. Said brush- slip ring system (2) comprises slip rings (18, 19) fastened to the rotor (4) and brushes (15) arranged in said fixed part of the machine. Each of the brushes (15) is connected to each of the slip rings (18, 19) in a sliding frictional connection so as to transmit energizing current to windings of the rotor (4). The slip rings (18, 19) are connected on a printed circuit board (17) and are arranged coaxially and radially spaced apart from one another. The brushes (15) are oriented in axial direction of the rotor (4). The slip rings (18, 19) and the printed circuit board (17) of said brush-slip ring system (2) are integrated by an insulating casing (20) to form an integrated slip ring unit (14), and this integrated slip ring unit (14) is co-rotatably fastened to a face of the rotor (4).