Magnetic return path and permanent-magnet fixing of a rotor

Details Magnetic return path and permanent-magnet fixing of a rotor Magnetic return path and permanent-magnet fixing of a rotor

2006-12-26

2006-12-26

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S216006

Reexamination Certificate

active

07154204

ABSTRACT:
A rotor for an electric motor having a short-circuit element that has lamination packets in which the laminations of the short-circuit element are embodied with spring elements which press from two sides against permanent magnets of the rotor and as a result center the permanent magnets in the lateral direction independently of production tolerances. After the insertion of the permanent magnets between the spring elements, the short-circuit element with the permanent magnets is potted, for instance with synthetic resin, or spray-coated with plastic. The rotor has the advantage that it compensates for production tolerances of the permanent magnets.

REFERENCES:
patent: 4954736 (1990-09-01), Kawamoto et al.
patent: 5670838 (1997-09-01), Everton
patent: 5760520 (1998-06-01), Hasebe et al.
patent: 199637 (1989-05-01), None
patent: WO 01/63726 (2001-08-01), None

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