BLOWER FAN
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United States of America Patent
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-
N/A
Issued Date -
Jul 31, 2014
app pub date -
Jul 16, 2013
filing date -
Jan 29, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a blower fan according to a preferred embodiment of the present invention, a stationary portion of a motor portion includes a stator, a bearing portion, and a holding portion to which both the stator and the bearing portion are fixed, while a rotating portion includes a central rotating portion, and an annular cup portion fixed to the central rotating portion. The central rotating portion includes a shaft, a bearing opposing portion, and a cylindrical seal portion. The cup portion includes a cylindrical cup inner wall portion fixed to an outer circumferential surface of the cylindrical seal portion, a cup top plate portion, and a cup outer wall portion. A seal portion having a surface of a lubricating oil defined therein is defined in a seal gap between an inner circumferential surface of the cylindrical seal portion and an outer circumferential surface of the bearing portion.
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