Permanent magnet type step motor

Details Permanent magnet type step motor Permanent magnet type step motor

1984-02-24

1985-07-09

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 49A, 310156, 310 89, 310 90, 336 84R, H02K 112

Patent

active

045284733

ABSTRACT:
A permanent magnet type step motor comprising a rotor wherein a disc-like permanent magnet having a magnetic pole in an axial direction and a pair of rotor yokes holding the permanent magnet therebetween are integrally and coaxially mounted on a rotational shaft, and a stator having a stator core opposed to an outer circumference of the rotor yokes. The front and rear brackets are formed of a non-magnetic material in which a thin shield sheet of magnetic material is inserted therein, and the magnetic resistance between the rotor yokes and the ends of the brackets opposed thereto is increased to reduce the leaky magnetic flux from the motor.

REFERENCES:
patent: 3206623 (1965-09-01), Snowdon
patent: 3711732 (1973-01-01), Gerber
patent: 3801842 (1974-04-01), Touchman
patent: 4170057 (1979-10-01), Roddy et al.
patent: 4205247 (1980-05-01), Brammerlo

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