Space optimization voice coil motor for disc drives

Details Space optimization voice coil motor for disc drives Space optimization voice coil motor for disc drives

1991-11-25

1993-11-09

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 13, 335296, H02K 2126, H02K 2138, H02K 2304

Patent

active

052606180

ABSTRACT:
The present invention is directed to the structure of the permanent pole pieces, the permanent magnets and the bobbin of a voice coil motor. The poles, poles and permanent magnet(s) or poles, permanent magnets or any combination thereof are shaped in such a manner as to provide as large and constant magnetic flux field strength over a given area. The shaping of the components of the voice coil motor results in an altered external geometrical shape of the voice coil motor envelope, a reduced envelope for a motor of a given torque capability or both. The shaping of the poles, permanent magnets or bobbin allows the voice coil motor to consume less room within the disk drive housing.

REFERENCES:
patent: 4644313 (1987-02-01), Miyajima
patent: 4908816 (1990-03-01), Champagne et al.
patent: 5005095 (1991-04-01), Wagner
patent: 5034642 (1991-07-01), Hoemann et al.
patent: 5093595 (1992-03-01), Korbel

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