Structure of rotors in stepping motors

Details Structure of rotors in stepping motors Structure of rotors in stepping motors

2005-10-25

2005-10-25

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156120, C310S156250, C310S156420, C310S112000, C310S216006, C310S254100

Reexamination Certificate

active

06958556

ABSTRACT:
A stepping motor having a rotor that includes a magnetic component whose circumferential part is magnetized in multipole along the circumferential surface thereof, the stepping motor being capable of forcing the rotor to rotate by magnetic force provided between magnetic poles of the rotor and excited salient poles of a stator, in which the magnetic component includes two magnetic component portions each shaped as an approximate ring, and the two magnetic component portions are either combined with each other or set up separately at an appropriate spacing between them. The stepping motor is capable of rotating with not only high speed but also less undesired vibration and noises, and enabling a simpler, smaller manufacturing equipment thereof to be constructed.

REFERENCES:
patent: RE25445 (1963-09-01), Fredrickson
patent: 3978356 (1976-08-01), Spiesberger
patent: 4009406 (1977-02-01), Inariba
patent: 4406958 (1983-09-01), Palmero et al.
patent: 4503368 (1985-03-01), Sakamoto
patent: 4695419 (1987-09-01), Inariba
patent: 6489696 (2002-12-01), Sashino et al.
patent: A 10-080124 (1998-03-01), None

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