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Title:
OUTER JOINT MEMBER OF CONSTANT-VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2016/199655
Kind Code:
A1
Abstract:
Outer joint members 11 and 112 of a constant-velocity universal joint 10 are formed by configuring: cup parts 12, 121, and 122 having a track groove 30 formed in an inner circumference thereof so that torque transmission elements 19 and 23 are engaged with the track groove 30; and a shaft part 13 formed on the bottoms of the cup parts 12, 121, and 122 of different members and by abutting cup members 12a, 12a2, and 12a2 forming the cup parts 12, 121, and 122 against shaft members 13a and 13a2 forming the shaft part 13 and welding them, characterized in that, in the outer joint member 11 of the constant-velocity universal joint 10, in which a hollow cavity H is formed by abutting joining end faces 50, 501, and 502 of the cup members 12a, 12a2, and 12a2 against joining end faces 51 and 511 of the shaft members 13a and 13a2, an air hole 60 communicating with hollow cavities H and H1 is provided at the shaft center of the cup members 12a, 12a2, and 12a2 and welding-sputter accommodation grooves 50a1, 51a, and 51a1 are formed on the inner diameter side of either the joining end faces 50, 501, and 502 of the cup members 12a, 12a2, and 12a2 or the joining end faces 51 and 511 of the shaft members 13a and 13a2.

Inventors:
AMINAKA TATSUYOSHI (JP)
Application Number:
PCT/JP2016/066317
Publication Date:
December 15, 2016
Filing Date:
June 01, 2016
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16D3/20; B23K15/00; B23K15/04; B23K26/21; B23K33/00
Foreign References:
JP2013002586A2013-01-07
JPH0259892U1990-05-01
JP2013094783A2013-05-20
JP2000329151A2000-11-28
JPH0525601B21993-04-13
JP2015064101A2015-04-09
JPS61273275A1986-12-03
Other References:
See also references of EP 3309420A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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