Impact resistant rotating device with increased-thickness portion relationship and suction plate configuration
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United States of America Patent
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May 12, 2015
Grant Date -
Nov 17, 2011
app pub date -
May 10, 2011
filing date -
May 11, 2010
priority date (Note) -
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Abstract
In a disk drive device, a magnetic recording disk is mounted on a hub. A base rotatably supports the hub via a bearing unit. The base has a ring-shaped wall that surrounds the bearing unit and that protrudes towards the hub. A laminated core is fixed to the base. The laminated core has a ring portion and twelve teeth that radially outwardly extend from the ring portion. Coils are wound around the twelve teeth. The base includes an increasing-thickness portion formed so that the less the distance between a part of the increasing-thickness portion and the ring-shaped wall is, the thicker the part of the increasing-thickness portion becomes.
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