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Title:
CONSTANT VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2005/078300
Kind Code:
A1
Abstract:
A constant velocity universal joint enabling an increase in the rigidity and a reduction in the weight of the connection shaft thereof and manufacturable at low cost. The hollow connection shaft (5) comprises a shaft end part (5c) with a tooth profile connected to the fitting part (2d) of the inside member (2) of the universal joint and an intermediate part (5d) arranged continuously with the shaft end part. The ratio r3 (dm/Douter) of the outer diameter (dm) of the intermediate part of the connection part to the outer diameter (Douter) of the outside member (1) of the universal joint is set to 0.26 ≤ r3 ≤ 1.0, and the ratio r2 (Douter/PCDSERR) of the outer diameter (Douter) of the outside member to the pitch circle diameter (PCDSERR) of the tooth profile of the fitting part of the inside member is set to 3.0 ≤ r2 ≤ 5.0. Also, the connection shaft is formed by forming the shaft end part by drawing both end parts of a pipe material of (dm) in outer diameter and forming the tooth profile on the shaft end outer periphery of the shaft end part by rolling.

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Inventors:
ISHIJIMA MINORU (JP)
YAMAZAKI KENTA (JP)
Application Number:
PCT/JP2004/019472
Publication Date:
August 25, 2005
Filing Date:
December 17, 2004
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
ISHIJIMA MINORU (JP)
YAMAZAKI KENTA (JP)
International Classes:
F16C3/02; F16D1/06; F16D3/20; B62D1/20; F16D3/22; (IPC1-7): F16D3/20; F16D3/22; F16C3/02
Foreign References:
JPH11101259A1999-04-13
JP2003130082A2003-05-08
JPS51138257A1976-11-29
JPS57167520A1982-10-15
JPH08121491A1996-05-14
JPH09177813A1997-07-11
US3785172A1974-01-15
Other References:
See also references of EP 1715206A4
Attorney, Agent or Firm:
Ehara, Syogo (15-26 Edobori 1-chome, Nishi-k, Osaka-shi Osaka 02, JP)
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