Self-aligning rotor assembly
US5539265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/528
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An alternator rotor assembly comprises two "claw pole" pole pieces and a field coil assembly mounted between the pole pieces for rotation therewith. The field coil assembly comprises a bobbin and a coil of wire wound around the body of the bobbin. The bobbin further comprises two walls extending radially away from the center of the bobbin, between which the coil wire is wound. Projecting from the walls are flaps which extend radially outward. The flaps are designed to be bent over by the pole fingers as the rotor assembly is assembled. When so bent over, the flaps help retain the coil wire on the bobbin and help prevent short-circuiting of the coil wire to the inner radius defined by the pole fingers. The ends of the flaps have notches. In one embodiment of the invention, the notches are adapted to allow insertion of the ends of the pole fingers. The notches in the flaps help assure alignment of the flaps and the pole fingers as assembly is begun. In a second embodiment of the invention, the notches are also adapted to allow insertion of projections in a silencer insert assembly which is disposed between the pole pieces. In this second embodiment, alignment of the flaps of the bobb…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.