Self-aligning rotor assembly

Details Self-aligning rotor assembly Self-aligning rotor assembly

1994-10-11

1996-07-23

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310194, 310 51, H02K 122

Patent

active

055392652

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 bobbin and the fingers of the pole pieces is facilitated by the notches in the flaps and the projections of the silencer insert.

REFERENCES:
patent: 3230404 (1966-01-01), Graham
patent: 3253167 (1966-05-01), Bates et al.
patent: 3603825 (1971-09-01), Sheridan et al.
patent: 3671906 (1972-06-01), Hodges et al.
patent: 4114056 (1978-09-01), Nimura
patent: 4617485 (1986-10-01), Nakamura et al.
patent: 5306977 (1994-04-01), Hayashi
patent: 5325003 (1994-06-01), Saval et al.
patent: 5329199 (1994-07-01), Yockey et al.
patent: 5361011 (1994-11-01), York

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