Stepping motor

Details Stepping motor Stepping motor

1994-07-07

1996-06-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 49R, H02K 3714, H02K 3700

Patent

active

055236340

ABSTRACT:
A stepping motor having a shaft with a magnet fixed coaxially thereon, a pair of bobbins of soft magnetic material fixed along the shaft at opposite ends of the magnets, A-phase and B-phase coils wound around the bobbins, yokes having bottom plate portions fixed to the end portion of each of the bobbins on the magnet side and having short pole teeth facing part of the outer peripheral surface of the magnet, long pole teeth of soft magnetic material having one end releasably connected to an end portion of each of the bobbins on a side opposite to the magnet and an other end facing an outer portion of an outer peripheral surface of the magnet; and pole-tooth supports of non-magnetic material coaxially placed to surround the outer peripheral surface of the magnet with all of the long pole teeth integrally fixed to the pole-tooth support members and the short pole-teeth releasably inserted into the pole-tooth housing section formed in the pole-tooth support members.

REFERENCES:
patent: 4553075 (1985-11-01), Brown et al.
patent: 5283487 (1994-02-01), Oki et al.
patent: 5406158 (1995-04-01), Arnold et al.

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