Patent ID: 9000645
Filing Date: 2015-04-07
Classification: H02K

Abstract:
1. A rotating electrical machine, comprising: a plurality of permanent magnets arranged along an inner peripheral surface of a cylindrical yoke at predetermined intervals in a circumferential direction; a magnet cover for covering an inner peripheral surface and both circumferential side surfaces of each of the plurality of permanent magnets, the magnet cover comprising locking portions on outer sides of both the circumferential side surfaces; and a magnet holder made of a non-magnetic material, which is formed by coupling a columnar portion provided between adjacent permanent magnets, for retaining each of the plurality of permanent magnets in the circumferential direction, and an annular portion for covering each axial side surface of each of the plurality of permanent magnets, wherein the magnet holder comprises, on an outer diameter side of both circumferential side surfaces of the columnar portion, engaging portions which engage with the respective locking portions of the magnet cover, and comprises, on an inner diameter side of each of both the circumferential side surfaces of the columnar portion, a first extending portion extending toward an inner peripheral surface of the magnet cover with a clearance with respect to the inner peripheral surface of the magnet cover.