Patent ID: 9276444
Filing Date: 2016-03-01
CPC Classification: H02K

Claim Text:
1. A rotor including an axial direction, a circumferential direction, and a radial direction, the rotor comprising: a first rotor core including a disk-shaped first core base, having a first magnet fixing surface, and a plurality of first claw-poles, arranged at equal intervals on an outer circumferential portion of the first core base, wherein each of the first claw-poles projects outward in the radial direction and extends in the axial direction; a second rotor core including a disk-shaped second core base, having a second magnet fixing surface, and a plurality of second claw-poles, arranged at equal intervals on an outer circumferential portion of the second core base, wherein each of the second claw-poles projects outward in the radial direction and extends in the axial direction, and each of the second claw-poles is arranged between adjacent ones of the first claw-poles, wherein the first and second magnet fixing surfaces face to each other in the axial direction; a permanent magnet arranged between the first core base and the second core base in the axial direction, and including a first axial end face, facing the first magnet fixing surface, and a second axial end face, facing the second magnet fixing surface, wherein the permanent magnet is magnetized in the axial direction so that the first claw-poles function as first poles and the second claw-poles function as second poles; and an adhesive that adheres the first magnet fixing surface and the first axial end face, and the second magnet fixing surface and the second axial end face, wherein the first magnet fixing surface includes a first adhesive recess, which is depressed in the axial direction and receives the adhesive, and the first axial end face does not include the first adhesive recess; and the second magnet fixing surface includes a second adhesive recess, which is depressed in the axial direction and receives the adhesive, and the second axial end face does not include the second adhesive recess.