FLUID DYNAMIC PRESSURE BEARING DEVICE

WIPO Patent Application WO/2010/004828

A1

A fluid dynamic pressure bearing device, wherein the strength of resistance of a lid member against dislocation thereof is enhanced without an increase in the size of the device and a reduction in bearing performance of the device. A fluid dynamic pressure bearing device (1) is provided with a shaft member (2), a bearing sleeve (8) for forming a radial bearing gap between the bearing sleeve and the outer peripheral surface of the bearing member (2), a housing (9) for containing the bearing sleeve (8) and having opposite ends open, and a lid member (10) for closing an opening on one end side of the housing (9) and forming thrust bearing sections (T1, T2).  The housing (9) is an injection-molded product which is insert-molded with the bearing sleeve (8).  A seal section (9b) for forming a seal space (S) is integrally formed on the other end side of the housing (9).  The lid member (10) is loosely fitted to the outer peripheral surface of the housing (9), and the lid member (10) and the housing (9) are bonded and fixed to each other.

SATOJI FUMINORI (JP)
MIZUTANI TOSHIYUKI (JP)
YAMAMOTO TETSUYA (JP)
KOMORI ISAO (JP)
KURIMURA TETSUYA (JP)

PCT/JP2009/060678

January 14, 2010

June 11, 2009

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NTN TOYO BEARING CO LTD (JP)
SATOJI FUMINORI (JP)
MIZUTANI TOSHIYUKI (JP)
YAMAMOTO TETSUYA (JP)
KOMORI ISAO (JP)
KURIMURA TETSUYA (JP)

F16C35/02; F16C17/10

WO2004092600A1

2004-10-28

JP2007192325A	2007-08-02
JP2007327588A	2007-12-20

TANAKA Hideyoshi et al. (JP)
Hideyoshi Tanaka (JP)

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