Patent ID: 9088190
Filing Date: 2015-07-21
Classification: F16C,H02K

Abstract:
1. An electrical machine rotor, comprising: a hollow nonmagnetic shaft; a pair of permanent magnets arranged to form a magnetic pole on the rotor; at least one fastener; a pole iron disposed between the pair of permanent magnets and secured to the shaft; and a pair of opposed inter-pole irons, wherein the pole iron urges each of the pair of permanent magnets against a corresponding one of the pair of opposed inter-pole irons, wherein the shaft includes interior and exterior surfaces, and the at least one fastener bears against the interior surface of the shaft and urges the pole iron towards the exterior surface of the shaft with the pole iron radially retaining the pair of permanent magnets relative to the shaft, wherein the pair of permanent magnets urge the corresponding ones of the inter-pole irons against the exterior surface of the shaft so as to retain the corresponding inter-pole irons against the shaft.