Wiper drive for use in windscreen wiping device of motor car, has brushless electromotor provided with stator that includes windings, and rotor formed from halbach magnetized permanent magnet ring

摘要

The drive has a brushless electromotor (10) provided with a stator that includes windings. A rotor is formed from a halbach magnetized permanent magnet ring that is made of a sintered ferrite material. The rotor rotates inside the stator. The windings are wrapped around a tooth of the stator, where the ring has eight poles, and the stator is provided with a set of teeth. A control device (35) supplies three-phase current to the windings. A gear box translates power transmission between the electromotor and a wiper blade.