公开(公告)号：US20170321759A1

公开(公告)日：2017-11-09

申请号：US15585232

申请日：2017-05-03

Applicant: JTEKT CORPORATION

Inventor： Yukinobu NISHIYAMA ,  Tetsuji Kawasumi ,  Satoshi Kato ,  Keishi Kobata ,  Masahito Ikeo ,  Hideki Sugiura

IPC: F16D3/2233 ,  F16D3/2245 ,  F16D3/223

CPC classification number: F16D3/2233 ,  F16D3/2245 ,  F16D2003/22309 ,  Y10S464/906

Abstract: In a constant-velocity joint, a center locus of a ball rolling on a first outer large-diameter portion has an arc shape having an arc center, and a center locus of the ball rolling on a second outer large-diameter portion has an arc shape having an arc center. Center loci of the ball rolling on an outer extension portion are positioned; throughout their lengths, in a region inducing a tangent line to an opening-side end portion of the center locus of the ball rolling on the second outer large-diameter portion, the region being positioned outward of the tangent line in a radial direction of the outer joint member. An opening-side end portion of the center locus of the ball rolling on the outer extension portion is positioned outward of the tangent line in the radial direction of the outer joint member.