Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1997-04-18
1999-10-26
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Linear
310 51, 360101, H02K 4100, H02K 524, G11B 2102
Patent
active
059734213
ABSTRACT:
A voice coil motor actuator for a magnetic disk device includes a pivot bearing shaft, a positioner, a magnet, and a coil. The positioner is pivotally supported by the pivot bearing shaft. The positioner has a distal end portion at which a magnetic head is mounted, and a proximal end portion projecting to a side opposite to the distal end portion with respect to the pivot bearing shaft. The magnet is fixed in correspondence with the pivot range of the proximal end portion of the positioner. The coil is arranged at the proximal end portion of the positioner to oppose the magnet. The coil has a pair of effective length portions which generate a magnetic flux to act on the magnet upon energization, thereby applying a pivot force to the positioner. The position of an intersection between the extended lines of the effective length portions of the coil is set between the pivot bearing shaft and the coil.
REFERENCES:
patent: 3064146 (1962-11-01), Schoninger et al.
patent: 5270887 (1993-12-01), Edwards et al.
patent: 5455728 (1995-10-01), Edwards et al.
patent: 5581424 (1996-12-01), Dunfield et al.
patent: 5729406 (1998-03-01), Faris
LaBalle Clayton
NEC Corporation
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