Bearing unit, and motor and electronic apparatus having the...

Details Bearing unit, and motor and electronic apparatus having the... Bearing unit, and motor and electronic apparatus having the...

2007-08-21

2007-08-21

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C310S090000, C384S903000

Reexamination Certificate

active

11041307

ABSTRACT:
The bearing unit of the present invention has: a shaft; a radial bearing which supports the shaft in a circumferential direction of the shaft; a thrust bearing which supports an end of the shaft in a thrust direction of the shaft; a housing having a closed structure except for a shaft insertion hole in which the shaft is inserted, with the radial bearing and the thrust bearing being provided inside the housing; a stopper member which prevents the shaft from being pulled out of the radial bearing; and viscous liquid filled in the housing. The stopper member is made of an elastic member which is elastically deformed only in the radial direction and is hardly deformed in the axial direction. Hence, the shaft is prevented from being pulled out from the housing, and shortage of the lubrication oil around bearing surfaces is prevented from being caused by lifting of the shaft.

REFERENCES:
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patent: 3663849 (1972-05-01), Heob
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patent: 5270737 (1993-12-01), Nakasugi et al.
patent: 6310415 (2001-10-01), Horng
patent: 6318976 (2001-11-01), Hsieh
patent: 6498412 (2002-12-01), Horng
patent: 6836041 (2004-12-01), Chou et al.
patent: 6902323 (2005-06-01), Chen
patent: 53-35007 (1978-03-01), None
patent: 2000-175401 (2000-06-01), None
Japanese Office Action; Application No. 2004-030987; Dated: Apr. 3, 2007.

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