FLUID BEARING

WIPO Patent Application WO/2021/130895

A1

[Problem] The present invention pertains to a fluid bearing used in a hard disk, a cooling fan, etc., and more specifically, to an oil-containing fluid bearing that avoids integration and has enhanced exchangeability and versatility as a component. [Solution] A fluid bearing according to the present invention is a fluid bearing 1 that comprises a bearing body 5 formed of an oil-containing porous sintered body and has arranged therein an outer ring 2 and an inner ring 3, the periphery of the bearing body 5 being covered by a seal cover 4. The fluid bearing 1 is characterized in that: side surfaces of the bearing body 5 are sealed with shielding films 6; an inclined groove 2a, which has inclined surfaces, is engraved into the outer ring 2 to form an oil pressure space α for guiding oil, which flows in due to a centrifugal force, in a rotational transverse direction between the bearing body 5 and the outer ring 2; blades are mounted to the side surfaces of the bearing body 5 to form an air pressure space β for guiding the air from the blades 7a in the rotational transverse direction between the bearing body 5 and the seal cover 4; and the oil pressure produced in the oil pressure space α and the air pressure produced in the air pressure space β confront each other at the contact portion of the bearing body and the outer ring so as to balance the pressures with each other.

MURAKAMI YUKIYOSI (JP)

PCT/JP2019/050808

July 01, 2021

December 25, 2019

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MURAKAMI YUKIYOSI (JP)

F16C33/10; F16C17/02; F16C33/74; F16C41/00

JPS4220922B1
JPH01172620A	1989-07-07
JPS505043A	1975-01-20
JPS299105Y1

HIRAYAMA Tosio (JP)

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