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1. (WO2018166806) EC MOTOR HAVING AN ANNULAR SENSOR MAGNET

Pub. No.:    WO/2018/166806    International Application No.:    PCT/EP2018/055044
Publication Date: Fri Sep 21 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: H02K 29/08
H02K 11/215
Applicants: ROBERT BOSCH GMBH
Inventors: KLAUSMANN, Anette
EVANS, Steven Andrew
MARTIN, Norbert
Title: EC MOTOR HAVING AN ANNULAR SENSOR MAGNET
Abstract:
In an electronically commutated motor comprising a permanently excited rotor, which has a rotor shaft (122) and which is coaxially surrounded by a stator with at least one stator winding, wherein the rotor shaft (122) defines an axis of rotation (130) of the permanently excited rotor and is rotatably mounted at at least two bearing points, which are spaced apart from one another in the longitudinal direction of the axis of rotation (130), a ring magnet (150) is arranged on the rotor shaft (122) with a magnetisation (152) which designed to be close to the surface in the region of an end side (154) of the ring magnet (150) oriented perpendicular to the axis of rotation (130), and which is designed for radially oriented and continuous detection of the rotor position by means of at least one associated magnetic field sensor (200).