| CPC H02K 1/2791 (2022.01) [H02K 1/28 (2013.01); H02K 15/03 (2013.01)] | 24 Claims |
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1. A rotor that is used in an inner rotor type rotating electrical machine and has a plurality of magnetic poles in a circumferential direction about a central axis extending vertically, the rotor comprising:
a magnet that constitutes each of the magnetic poles;
a rotor core that has an axially extending accommodation hole for accommodating the magnet; and
a resin that is put into the accommodation hole, wherein
the rotor core includes
a first block, and
a second block that is arrayed in an axial direction together with the first block and is arranged such that a circumferential position of the accommodation hole is shifted with respect to the first block,
the first block and the second block each have a resin groove that communicates with the accommodation hole included in each block, extends from an axial upper end to lower end, and receives the resin, and
the resin groove of the first block and the resin groove of the second block are at least partially overlapped and connected in an axial direction, or are connected via the resin groove included in at least one other block disposed between the first block and the second block in an axial direction,
the magnet includes a first magnet extending in a direction parallel to a tangential direction of the rotor core,
the accommodation hole includes a first magnet accommodation hole that accommodates the first magnet, and
the resin groove includes a first resin groove that is radially recessed from an inner surface of the first magnet accommodation hole,
the first resin groove is disposed radially inward relative to the first magnet, and
in plan view from an axial direction, a maximum width of the first resin groove in a direction parallel to the tangential direction is larger than a shortest distance in a radial direction between an inner surface of radial inward of the first magnet accommodation hole and the first magnet.
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