Coil forming method and coil forming device
US7311284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | May 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil forming apparatus for forming a continuous-pole coil having a plurality of single-pole coils includes a winding jig rotatable around a center swing axis. The winding jig includes: a holder rotatable around a center axis of rotation different from center swing axis; and a plurality of coil bobbins arranged around said holder and mounted for reciprocal movement between advanced and retracted positions relative to the holder. Each individual coil bobbin has a winding axes which can be aligned with the center swing axis by turning the winding jig around the center axis of rotation. The single-pole coils having little twist can be stably formed for any coil bobbin to thereby form the continuous-pole coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.