Method of manufacturing a rotor

Details Method of manufacturing a rotor Method of manufacturing a rotor

1994-09-19

1996-03-26

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29608, 2642772, 310 43, 310156, H02K 1502

Patent

active

055009948

ABSTRACT:
A miniature electric motor has a stator mounted within a casing and a rotor provided so as to face the stator. The rotor includes a rotary shaft rotatably supported to the casing, a rotor body into which the rotary shaft is inserted, the rotor body being made of plastic, and a magnetic layer formed on an outer circumferential surface of the rotary body and made of rare earth plastic magnetic material. Accordingly, it is possible to obtain a high torque even with a small amount of rare earth plastic magnet and to avoid separation or cracks of the magnetic layer.

REFERENCES:
patent: 3872334 (1975-03-01), Loubier
patent: 4059898 (1977-11-01), Adair

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