Rotor of rotating machine and manufacturing method of rotor of rotating machine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsToshinori Okochi, Keisuke Ito
Life of this patent
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Abstract
A rotor of a rotating machine includes a rotor core in which a plurality of assembly holes is provided in an axial direction, and a first magnet and a second magnet. The first magnet and the second magnet are assembled to the rotor core by being inserted into the assembly holes in accordance with a predetermined arrangement pattern. An outer peripheral surface of any one of the first magnet and the second magnet, including end faces in the axial direction, being entirely covered with an insulating coating, and an outer peripheral surface of the other of the first magnet and the second magnet, excluding at least a part of end faces in the axial direction, being covered with an insulating coating.
Claims8
A rotor of a rotating machine, comprising:
- a rotor core in which a plurality of assembly holes is provided in an axial direction;
- and
- two types of magnets including a first magnet and a second magnet assembled to the rotor core by being inserted into the assembly holes in accordance with a predetermined arrangement pattern, an outer peripheral surface of any one of the first magnet and the second magnet, including end faces in the axial direction, being entirely covered with an insulating coating, and an outer peripheral surface of the other of the first magnet and the second magnet, excluding at least a part of end faces in the axial direction, being covered with an insulating coating.
A manufacturing method of a rotor of a rotating machine including a rotor core in which a plurality of assembly holes is provided in an axial direction, and two types of magnets including a first magnet and a second magnet assembled to the rotor core by being inserted into the assembly holes in accordance with a predetermined arrangement pattern, the manufacturing method comprising:
- preparing the first magnet and the second magnet, each of an outer peripheral surface of the first magnet and an outer peripheral surface of the second magnet being covered with an insulating coating such that the outer peripheral surface of one magnet, including end faces in the axial direction, is entirely covered with the insulating coating and the outer peripheral surface of the other magnet is covered with the insulating coating excluding at least a part of end faces in the axial direction, the one magnet being one of the first magnet and the second magnet and the other magnet being the other of the first magnet and the second magnet;
- and
- distinguishing the first magnet and the second magnet from each other based on a difference in an electrical resistance caused by whether the insulating coating is provided by bringing an electrode into contact with a portion of the end faces in the axial direction, the portion of the end faces being covered with the insulating coating for the one magnet but not covered with the insulating coating for the other magnet, and measuring the electrical resistance, for both of the first magnet and the second magnet.
Dependencies are inferred from the claim text.