Stepping motor

Details Stepping motor Stepping motor

1992-07-17

1994-02-01

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, 310254, H02K 3702

Patent

active

052834867

ABSTRACT:
With this invention, realized is the maximum torque which should be generated given a value for the outer diameter dimension of a stator in a hybrid type stepping motor. In a hybrid type stepping motor 21 composed of a rotor with a plurality of teeth provided at equal pitches on a peripheral surface and a stator having a plurality of salient poles provided so as to oppose to the peripheral surface of the rotor through an air gap, the ratio of the inside diameter Di of the stator 22 to the outer diameter Do thereof is set between 0.62 and 0.64 in the case of a two-phase stepping motor and between 0.605 and 0.625 in the case of a five-phase stepping motor in order to generate the maximum torque from the rotor 23.

REFERENCES:
patent: 4262353 (1981-04-01), Okazaki et al.
patent: 4801832 (1989-01-01), Neumann
patent: 4831301 (1989-05-01), Neumann
patent: 4983867 (1991-01-01), Sakamoto
patent: 5179306 (1993-01-01), Nasar

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