Rotor for rotating electrical machine and rotor core support structure for rotating electrical machine
US11303172B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 9, 2018 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Jun 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2766
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor of a rotary electric machine includes a rotor shaft, a rotor core fixedly supported on an outer circumference of the rotor shaft. The rotor shaft is provided, in a cross section perpendicular to the rotation axis, with a first outer edge portion projecting in a radial direction of the rotor shaft, and a second outer edge portion arranged in line with the first outer edge portion one after the other in a circumferential direction of the rotor shaft. The rotor core has a core insertion hole into which the rotor shaft is inserted, and a shaft holding portion on an inner circumference forming the core insertion hole, the shaft holding portion being configured to hold the first outer edge portion from the opposite sides in the circumferential direction of the rotor shaft. The shaft holding portion is in a non-contact state with the second outer edge portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.