Axial flux motor with stator pre-load
US9577478B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2013 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Aug 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor comprises a stator assembly, a rotor assembly having a stator core, and a stator cup adjacent the stator core. The inside surface of the stator cup comprises a plurality of aligned regions and a plurality of pressure regions. Each of the plurality of aligned regions is axially aligned with a corresponding one of a plurality of fastener-engaging regions of the stator cup. Each of the plurality of pressure regions is spaced from each of the plurality of aligned regions. A plurality of fastening portions operatively engages the fastener-engaging regions and operatively engages the stator core in a manner urging the stator core and the stator cup toward one another. Urging of the stator core and the stator cup toward one another by the plurality of fastening portions causes the stator core to exert pressure on the plurality of pressure regions. The pressure being exerted on the plurality of pressure regions by the stator core as a result of the fastening portions urging the stator core and the stator cup toward one another is greater than pressure being exerted on the plurality of aligned regions by the stator core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.