公开(公告)号：US20190309801A1

公开(公告)日：2019-10-10

申请号：US16363098

申请日：2019-03-25

Applicant: JTEKT CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isashi KASHIWAGI ,  Masahito Ikeo ,  Yoshitaka Shinoda ,  Hideki Sugiura

IPC: F16D3/2237

Abstract: In a constant velocity joint, a center locus of a first ball rolling on a first outer central portion is inclined such that a distance from a central axis of an outer joint member decreases toward a bottom side of the outer joint member. A center locus of a second ball rolling on a second outer central portion is formed in a linear shape and inclined such that a distance from the central axis of the outer joint member increases toward the bottom side of the outer joint member. A center locus of the second ball rolling on the second outer bottom side portion is formed in an arc shape and disposed in the outer joint member at a position radially inwardly from a tangent at a connecting position between the second outer central portion and the second outer bottom side portion.

公开(公告)号：US11261918B2

公开(公告)日：2022-03-01

申请号：US16363098

申请日：2019-03-25

Applicant: JTEKT CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isashi Kashiwagi ,  Masahito Ikeo ,  Yoshitaka Shinoda ,  Hideki Sugiura

IPC: F16D3/2237 ,  F16D3/223

Abstract: In a constant velocity joint, a center locus of a first ball rolling on a first outer central portion is inclined such that a distance from a central axis of an outer joint member decreases toward a bottom side of the outer joint member. A center locus of a second ball rolling on a second outer central portion is formed in a linear shape and inclined such that a distance from the central axis of the outer joint member increases toward the bottom side of the outer joint member. A center locus of the second ball rolling on the second outer bottom side portion is formed in an arc shape and disposed in the outer joint member at a position radially inwardly from a tangent at a connecting position between the second outer central portion and the second outer bottom side portion.

公开(公告)号：US11566671B2

公开(公告)日：2023-01-31

申请号：US16733450

申请日：2020-01-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  JTEKT CORPORATION

Inventor： Yoshitaka Shinoda ,  Masahito Ikeo ,  Yoshinari Sakai

IPC: F16D3/223 ,  F16D3/2237 ,  F16D3/2233

Abstract: A constant-velocity universal joint including a generally cup-shaped outer joint member and an inner joint member that define first and second groove portions. A pinch angle by which a ball is pinched in the first groove portion is open toward an opening of the outer joint member. A pinch angle by which the ball is pinched in the second groove is open toward a bottom of the outer joint member. An absolute value of the pinch angle in a larger-pinch-angle groove portion that is one of the first and second groove portions, is larger than an absolute value of the pinch angle in a smaller-pinch-angle groove portion that is the other of the first and second groove portions in a reference state. A radial clearance in the smaller-pinch-angle groove portion is larger than a radial clearance in the larger-pinch-angle groove portion when torque is not transmitted in the reference state.

公开(公告)号：US20190309800A1

公开(公告)日：2019-10-10

申请号：US16374996

申请日：2019-04-04

Applicant: JTEKT Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isashi KASHIWAGI ,  Masahito Ikeo ,  Yoshitaka Shinoda ,  Hideki Sugiura

IPC: F16D3/223

Abstract: A joint-center-fixed constant velocity joint configured to be provided in a vehicle includes an outer joint member, an inner joint member, a first ball, a second ball, and a cage. While a center of the first ball is moving to a position of the maximum use angle on an opening side from a joint center, a first open angle faces the opening side. While a center of the second ball is moving to a position of the maximum use angle on a bottom side from the joint center, a second open angle is not reversed from a state where the second open angle faces the bottom side to a state where the second open angle faces the opening side.

公开(公告)号：US11421743B2

公开(公告)日：2022-08-23

申请号：US16680892

申请日：2019-11-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  JTEKT Corporation

Inventor： Yoshitaka Shinoda ,  Koji Matsumoto ,  Masahito Ikeo ,  Kimio Hibi ,  Yoshinari Sakai

IPC: F16D3/223 ,  F16D3/2237 ,  F16D3/224

Abstract: A constant-velocity universal joint including a generally cup-shaped outer joint member and an inner joint member that cooperate with each other to define first and second groove portions. A pinch angle by which a ball is pinched in the first groove portion is open toward an opening end of the outer joint member. A pinch angle by which the ball is pinched in the second groove is open toward a bottom wall of the outer joint member. An absolute value of the pinch angle in the first groove portion is larger than an absolute value of the pinch angle in the second groove portion in a reference state in which centerlines of the outer joint member and the inner joint member lie in a straight line.

公开(公告)号：US11248660B2

公开(公告)日：2022-02-15

申请号：US16374996

申请日：2019-04-04

Applicant: JTEKT Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isashi Kashiwagi ,  Masahito Ikeo ,  Yoshitaka Shinoda ,  Hideki Sugiura

IPC: F16D3/223

Abstract: A joint-center-fixed constant velocity joint configured to be provided in a vehicle includes an outer joint member, an inner joint member, a first ball, a second ball, and a cage. While a center of the first ball is moving to a position of the maximum use angle on an opening side from a joint center, a first open angle faces the opening side. While a center of the second ball is moving to a position of the maximum use angle on a bottom side from the joint center, a second open angle is not reversed from a state where the second open angle faces the bottom side to a state where the second open angle faces the opening side.

公开(公告)号：US10364849B2

公开(公告)日：2019-07-30

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

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.

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.