Stepping motor with dual-layer bobbin cover

Details Stepping motor with dual-layer bobbin cover Stepping motor with dual-layer bobbin cover

2006-05-30

2006-05-30

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S049030, C310S049030

Reexamination Certificate

active

07053517

ABSTRACT:
In a stepping motor comprising a pair of stator yokes and a bobbin that includes a cylindrical body and two flanges, each of the two flanges radially extending outward from the cylindrical body so that the bobbin forms a squared U-shape in the axial cross-section thereof, there is provided a bobbin cover case disposed between the stator yokes and a coil wound around the bobbin, and the bobbin cover case includes an outer cover and an inner cover that are coupled to each other so as to provide a dual-layer insulating wall covering an open mouth portion of the squared U-shape, wherein the bobbin cover case inhibits a creeping discharge between the stator yokes and the coil.

REFERENCES:
patent: 4841190 (1989-06-01), Matsushita et al.
patent: 5298820 (1994-03-01), Lee et al.
patent: 5770900 (1998-06-01), Sato et al.
patent: 6909208 (2005-06-01), Suzuki et al.
patent: 62-290332 (1987-12-01), None
patent: 2000-14118 (2000-01-01), None
patent: 2002-374662 (2002-12-01), None

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