Positioning device for a sensor element of a miniature fan

Details Positioning device for a sensor element of a miniature fan Positioning device for a sensor element of a miniature fan

1997-10-21

2000-08-29

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

4174237, 310254, 310 68B, F04B 1700

Patent

active

061098922

ABSTRACT:
A positioning device for a miniature fan includes a coil seat having an axle tube, an upper polar plate assembly, a lower polar plate assembly, and a winding mounted between the upper polar plate assembly and the lower polar plate assembly. A circuit board is mounted to the axle tube and includes a sensor element for activating a rotor. The sensor element is located on a vertical line extending from an end edge of the lower polar plate assembly along a direction parallel to a longitudinal axis of the axle tube.

REFERENCES:
patent: 4773829 (1988-09-01), Vettori
patent: 5010263 (1991-04-01), Murata
patent: 5093599 (1992-03-01), Horng
patent: 5097170 (1992-03-01), Baines

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