Title:
THRUST BEARING FOR HYDRAULIC CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2013/031248
Kind Code:
A1
Abstract:
The present invention is a thrust bearing that is built into a hydraulic continuously variable transmission, and is provided with an inner ring in contact with a piston of a piston chamber of a variable-capacity pump, an outer ring secured to an inclined plate, and a plurality of rolling elements held between the inner ring and the outer ring by a retainer. The thrust bearing is characterized in that the groove base thickness (Ti) of the inner ring is at least 40% of the ball diameter, the groove base thickness (Te) of the outer ring is at least 15% of the ball diameter, and the ratio (Ti/Te) is greater than 1 and no more than 3. Thus, breakage of the inner ring is prevented and a thrust bearing for a hydraulic continuously variable transmission having a long-life is provided.
Inventors:
TATEYAMA CHISATO
MIYAMOTO MASATO
MIYAMOTO MASATO
Application Number:
PCT/JP2012/051683
Publication Date:
March 07, 2013
Filing Date:
January 26, 2012
Export Citation:
Assignee:
NSK LTD (JP)
TATEYAMA CHISATO
MIYAMOTO MASATO
TATEYAMA CHISATO
MIYAMOTO MASATO
International Classes:
F16C33/58; F03C1/253; F04B1/22; F16C19/10
Foreign References:
| JP2008298140A | 2008-12-11 | |||
| JP2000199555A | 2000-07-18 | |||
| JP2001311426A | 2001-11-09 | |||
| JP2007211895A | 2007-08-23 |
Attorney, Agent or Firm:
OGURI Shohei et al. (JP)
Shohei Oguri (JP)
Shohei Oguri (JP)
Download PDF:
Claims:
Previous Patent: METHOD FOR CONTROLLING WELDING CURRENT OF RESISTANCE WELDING MACHINE, AND DEVICE THEREFOR
Next Patent: THRUST BEARING
Next Patent: THRUST BEARING