Structure of PM step motor and its fabrication

Details Structure of PM step motor and its fabrication Structure of PM step motor and its fabrication

1997-10-06

1998-12-08

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

310 42, 310 43, 310 49R, 310 71, H02K 1502

Patent

active

058453903

ABSTRACT:
A PM step motor fabrication method including the steps of i) preparing two windings, ii) fastening two annular intermediate metal plates together by spot welding, iii) mounting the windings on the annular intermediate metal plates, then covering two annular cover shells on the windings, and then fastening a top cap with an axle bearing to one annular cover shell, and then injection-molding a plastic packing member on the top cap within the annular cover shells to form a stator, iv) preparing a rotor, v) processing axle cap with an axle bearing by injection-molding, and vi) installing the rotor in the stator, permitting it to be supported on the axle bearing of the top cap and the axle bearing of the axle cap.

REFERENCES:
patent: 5598046 (1997-01-01), Miyazawa et al.

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