Bearing unit and motor

Herein disclosed a bearing unit including: a dynamic pressure fluid bearing adapted to receive a rotary shaft inserted thereinto; a unit main body surrounding the outside of the fluid bearing; a lid member covering an upper opening of the unit main body with the rotary shaft inserted into the dynami...

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Bibliographic Details
Main Authors CHIYODA MAKOTO, SHISHIDO YUJI
Format Patent
LanguageEnglish
Published 21.07.2009
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:Herein disclosed a bearing unit including: a dynamic pressure fluid bearing adapted to receive a rotary shaft inserted thereinto; a unit main body surrounding the outside of the fluid bearing; a lid member covering an upper opening of the unit main body with the rotary shaft inserted into the dynamic fluid bearing; lubricating oil poured into the unit main body; and an oil thrower ring rotating together with the rotary shaft in a space defined between an upper end of the fluid bearing and the lid member; wherein a gap defined between the lid member and the oil thrower ring is tapered in cross-section so as to be progressively reduced in the distance therebetween as the gap is spaced apart from the center of the rotary shaft.
Bibliography:Application Number: US20070832247