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Title:
VEHICLE STEERING SHAFT-USE EXPANSION SHAFT AND LUBRICATING GREASE COMPOSITION OF THIS EXPANSION SHAFT
Document Type and Number:
WIPO Patent Application WO/2007/069659
Kind Code:
A1
Abstract:
A vehicle steering shaft-use expansion shaft which is built in the steering shaft of a vehicle, allows a male shaft and a female shaft to be fitted to each other so as not to rotatable but to be slidable each other, and transmits torque with the outer peripheral surface of the male shaft and the inner peripheral surface of the female shaft rotated in contact with each other, wherein a grease composition having an apparent viscosity of 400-750Pa·s (at 25°C) at a shearing rate of 10 sec-1 specified by JIS K2220 is sealed in the gap between the outer peripheral surface of the male shaft and the inner peripheral surface of the female shaft. The vehicle steering shaft-use expansion shaft does not require additional working on the male and female shafts that may causes cost increases, and integrally improves durability, resistance and stick-slip resistance.

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Inventors:
NAKATANI SHINYA
YOKOUCHI ATSUSHI
SATO HIROSHI
TAKAHASHI KAZUNORI
MORIYAMA SEIICHI
Application Number:
PCT/JP2006/324872
Publication Date:
June 21, 2007
Filing Date:
December 13, 2006
Export Citation:
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Assignee:
NSK LTD (JP)
NAKATANI SHINYA
YOKOUCHI ATSUSHI
SATO HIROSHI
TAKAHASHI KAZUNORI
MORIYAMA SEIICHI
International Classes:
C10M171/02; B62D1/20; F16D3/06; C10N20/02; C10N30/00; C10N30/06; C10N40/04; C10N50/10
Domestic Patent References:
WO2004081156A12004-09-23
WO2006070893A12006-07-06
Foreign References:
JP2005329849A2005-12-02
JPH11152490A1999-06-08
JPH0734083A1995-02-03
JP2006300260A2006-11-02
Other References:
See also references of EP 1972681A4
Attorney, Agent or Firm:
OGURI, Shohei et al. (7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo 03, JP)
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