Patent ID: 11929647
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A magnet-embedded rotor comprising:
a rotor core made of magnetic material;
a permanent magnet disposed in a magnet insertion hole of the rotor core; and
a cushioning material provided between a wall surface of the magnet insertion hole and the permanent magnet, wherein
the cushioning material is located at least at a location where a distance between the wall surface of the magnet insertion hole and the permanent magnet is the narrowest, on both sides in a rotational direction with respect to the permanent magnet,
no cushioning material is provided on a radially inner side and a radially outer side of the permanent magnet, and
the cushioning material is provided at one end of the magnet insertion hole in an axial direction of the rotor core.