Title:
FIXED CONSTANT-VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2020/203221
Kind Code:
A1
Abstract:
Regarding a fixed constant-velocity universal joint 1 in which a track center line X of a track groove 7 of an outer joint member 2 includes at least an arcuate portion having a center of curvature with no axial offset with respect to a joint center O, a plane M including the track center line X and the joint center O is inclined with respect to a joint axis N-N and the inclination direction thereof is formed in mutually opposite directions in the circumferentially adjacent track grooves 7, and a track center line Y of a track groove 9 of an inner joint member 3 is formed in mirror image symmetry with the track center line X of the track grooves 7 forming a pair in the outer joint member 2 with respect to a plane P that includes the joint center O and is orthogonal to the joint axis N-N in a state with an operating angle of 0°, the present invention is characterized in that at least one torque transmission ball 4 that moves to the opening side of the track groove 7 of the outer joint member 2 has an operating form in which the contact point with the opening-side end of the track groove 7 of the outer joint member 2 is lost when a maximum operating angle θmax is taken, and in the state with an operating angle of 0°, an end of a retainer 5 axially projects from the opening-side end of the outer joint member 2.
Inventors:
FUJIO TERUAKI (JP)
FUNAHASHI MASASHI (JP)
FUNAHASHI MASASHI (JP)
Application Number:
PCT/JP2020/011435
Publication Date:
October 08, 2020
Filing Date:
March 16, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16D3/224
Domestic Patent References:
| WO2006121024A1 | 2006-11-16 |
Foreign References:
| JP2012017844A | 2012-01-26 | |||
| JP2013133919A | 2013-07-08 | |||
| JP2007270997A | 2007-10-18 | |||
| JP2015010615A | 2015-01-19 | |||
| JP2008106881A | 2008-05-08 | |||
| JP4041641B2 | 2008-01-30 | |||
| JP4885236B2 | 2012-02-29 | |||
| JP2013104432A | 2013-05-30 |
Other References:
See also references of EP 3951201A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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