Rotor-stator assembly for electric motor i.e. windscreen wiper motor of car, has ring or element in portion of ring placed on interior wall of reinforcement case, where interior wall of case is equipped with cooling ribs

摘要

The assembly (1) has a reinforcement case (2) including a cylindrical interior wall (3), where the reinforcement case is made of a material having a thermal conductivity higher than 80 Watts per meter kelvin (W/mK) at 20 degrees Celsius. A ring (4) or an element in a portion of the ring made out of ferromagnetic material is placed on the interior wall of the reinforcement case, where the reinforcement case is realized by molding or extruding or stamping of aluminum or carbon or iron, and the interior wall of the case is equipped with cooling ribs (20).