Magnetic gear device and holding member
US9166464B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | May 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K49/108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic gear device including: an internal rotor and an external rotor in which a plurality of magnetic pole pairs are each placed in a circumferential direction substantially at equal intervals; and a holding member that is placed between the internal rotor and the external rotor and holds a plurality of magnetic materials in the circumferential direction substantially at equal intervals, wherein the number of magnetic materials is a difference between or a total of the numbers of magnetic pole pairs, the holding member includes a plurality of circular rings that hold the magnetic materials, and connecting rods that are placed in the circumferential direction substantially at equal intervals and connect the plurality of circular rings, the plurality of circular rings face each other via the magnetic materials, and each number of magnetic pole pairs is set to have the number of connecting rods as a divisor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.