CONSTANT VELOCITY UNIVERSAL JOINT - NTN TOYO BEARING CO LTD

Title:

CONSTANT VELOCITY UNIVERSAL JOINT

Document Type and Number:

WIPO Patent Application WO/2011/125491

Kind Code:

A1

Abstract:

Disclosed is a constant velocity universal joint which ensures excellent durability by means of ensuring that balls are stably in contact with a forged track and a finished track, and which has a track shape allowing easy quality control of the forging mold and products just as in conventional devices. At least a track groove (22) of an outer joint member (23) and/or a track groove (25) of an inner joint member (26) is formed by means of finishing with cold forging. The cross section of the bottom side of track grooves (22, 25) is shaped like a gothic arch, and that of the open side thereof is ovular.

Inventors:

TERASAKA YOSHINORI (JP)
KOBAYASHI TOMOSHIGE (JP)
YAMAZAKI KISAO (JP)
ISHIJIMA MINORU (JP)

Application Number:

PCT/JP2011/056889

Publication Date:

October 13, 2011

Filing Date:

March 23, 2011

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
TERASAKA YOSHINORI (JP)
KOBAYASHI TOMOSHIGE (JP)
YAMAZAKI KISAO (JP)
ISHIJIMA MINORU (JP)

International Classes:

F16D3/20; F16D3/2237; F16D3/2245; F16D3/227

Foreign References:

JP2007139094A	2007-06-07
JP2007255707A	2007-10-04
JP2009185933A	2009-08-20
JP2009079684A	2009-04-16
JP2008002624A	2008-01-10
JP2009185933A	2009-08-20
JP2007260698A	2007-10-11

Other References: