Orientation magnetization device and magnet-embedded rotor
US10199911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/276
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An orientation magnetization device includes plural orientation magnetization yokes and plural orientation magnetization magnets, and molds field magnets while a rotor core is disposed in a magnetic circuit that is formed by assembling the orientation magnetization yokes and the orientation magnetization magnets into an annular shape. When the rotor core is disposed in the magnetic circuit, protruding portions are disposed at portions of the respective orientation magnetization yokes facing the rotor core. Auxiliary magnets are disposed in gaps between the respective orientation magnetization magnets and the rotor core, on opposite sides of each protruding portion in a circumferential direction of the orientation magnetization device. Each protruding portion and each auxiliary magnet extend in an axial direction of the orientation magnetization device, and are skewed with respect to the axial direction of the orientation magnetization device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.