Coil assembly for voice coil motor

Details Coil assembly for voice coil motor Coil assembly for voice coil motor

1989-09-14

1991-01-29

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

360 9807, 360 7813, 360 9702, H02K 4100, G11B 1708, G11B 5596, G11B 3314

Patent

active

049889036

ABSTRACT:
A coil assembly for use in a voice coil motor has a pair of coils. A pair of coil frames made of metallic material have each a cavity for receiving therein each coil adhered and fixed in the cavity. The pair of coil frames have respective opposed peripheral portions surrounding the cavity and being adhered and fixed to each other to seal the coils. At least one of the coil frames has at its central portion an airhole. A filter and activated carbon are interposed between the airhole and the coils.

REFERENCES:
patent: 4339250 (1982-07-01), Thut
patent: 4471395 (1984-09-01), Beck et al.
patent: 4922406 (1990-05-01), Schuh

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