Motor provided with noncircular stator core, apparatus for production of motor, and method for production of motor
US10256706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jul 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8737
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor which reduces the manufacturing cost while able to reduce the cogging torque. The stator core is provided with a first core sheet and a second core sheet which is stacked with the first core sheet so that its rolling direction becomes a direction rotated from the rolling direction of the first core sheet by exactly an angle of an odd multiple of 360°/(number of poles of motor×2). The outside edge of the first core sheet has a first side and a second side at two sides in a direction perpendicular to the rolling direction. The outside edge of the second core sheet has a third side and a fourth side in a direction perpendicular to the rolling direction. The dimension between the first side and the second side and the dimension between the third side and the fourth side are the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.