Rotor, motor, and method for manufacturing rotor
US11322998B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor according to an embodiment includes a cylindrical magnet, a holder, and a balance adjusting portion. The cylindrical magnet has a bore portion into which a rotary shaft is inserted, the inner diameter of the bore portion being larger than the outer diameter of the rotary shaft. The holder is made of resin, and has a tubular portion formed in the bore portion of the magnet and a protruding portion protruding from the magnet in the rotation axis direction, the holder being press-fitted onto the rotary shaft. The balance adjusting portion is press-fitted onto the rotary shaft with the protruding portion interposed therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.