Claw-pole stepper motor having a rotor supported by an axial bea

Details Claw-pole stepper motor having a rotor supported by an axial bea Claw-pole stepper motor having a rotor supported by an axial bea

1996-12-06

1999-12-28

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 49A, 310257, H02K 3714, H02K 3724, H02K 706

Patent

active

060085541

ABSTRACT:
Stator elements each accommodate at least one stator coil (5, 6), and a rotor (2) comprises a permanent magnet (10) which is axially supported by means of at least one axial bearing (11), the rotor (2) having an inner screwthread (12) in which a threaded spindle (13) is engageable. The permanent magnet (10) of the rotor (2) projects beyond the respective outer end (7, 8) of the stator return element (3, 4) at at least one axial end (10a, 10b), in such a manner that in spite of a displacement of the rotor (2) as a result of bearing tolerances of the axial bearing (11) substantially the entire electromagnetic field of the stator coils (5, 6) is linked to the rotor (2).

REFERENCES:
patent: 5220224 (1993-06-01), Bosman et al.

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