LUBRICANT COMPOSITION, REDUCTION GEAR USING THE COMPOSITION, AND ELECTRIC POWER STEERING DEVICE USING THE REDUCTION GEAR

Title:

LUBRICANT COMPOSITION, REDUCTION GEAR USING THE COMPOSITION, AND ELECTRIC POWER STEERING DEVICE USING THE REDUCTION GEAR

Document Type and Number:

WIPO Patent Application WO/2007/060885

Kind Code:

A1

Abstract:

Disclosed are: a novel lubricant composition which, even when a stress is applied repeatedly for a long period, does not cause the increase in viscosity and therefore does not cause the separation of a lubricant base oil or the leakage of the separated base oil from a reduction gear or the like; a reduction gear using the lubricant composition; and an electric power steering device. The lubricant composition contains a combination of at least two thickening agents each containing lithium stearate and shows a viscosity of 355 or greater in a mixed state (at 25ºC). The reduction gear (50) has the lubricant composition containing microparticles charged therein. The electric power steering device has the reduction gear integrated therein.

Inventors:

KITAHATA KOUJI (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)

Application Number:

PCT/JP2006/322967

Publication Date:

May 31, 2007

Filing Date:

November 17, 2006

Export Citation:

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Assignee:

JTEKT CORP (JP)
KYODO YUSHI (JP)
KITAHATA KOUJI (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)

International Classes:

C10M169/02; B62D5/04; C10M115/10; C10M117/02; C10M125/04; C10M143/00; C10M145/20; C10M147/02; C10M149/12; C10M149/18; F16H57/04; C10M149/14; C10N10/02; C10N10/04; C10N10/06; C10N20/00; C10N20/06; C10N30/00; C10N40/04; C10N50/10

Domestic Patent References:

WO2005090529A1

2005-09-29

Foreign References:

JPH11228983A	1999-08-24
JPH01271493A	1989-10-30
JPH11152490A	1999-06-08
JPS5342203A	1978-04-17

Other References: