Magnetic flux modulation type magnetic gear
US12316189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2020 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Sep 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the magnetic flux modulation type magnetic gear which uses pole pieces, improvement in demagnetization resistance and suppression of the reduction in torque were issues. Therefore, to the pole pieces provided in a torus shape, a magnetic flux modulation type magnetic gear arranges concentrically a first rotator on the inside of the pole piece and a second rotator on the outside, so that the rotors can be rotated relatively, with the center of the pole pieces as the rotation axis, wherein a first hole part stores, on the inside of the rotator, a first permanent magnet prepared in the rotator, having inclination of a predetermined angle, with respect to the line segment which shows a magnetic pole center, when viewed from the rotation axis. The magnetic gear is configured so as to use the amount of permanent magnets as much as possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.