公开(公告)号：US12097911B2

公开(公告)日：2024-09-24

申请号：US17032176

申请日：2020-09-25

Applicant: NTN CORPORATION

Inventor： Hirokazu Ooba ,  Norio Ishihara ,  Satoshi Utsunomiya ,  Yusuke Ohata

IPC: B62D5/04 ,  B62D7/09

CPC classification number: B62D5/0418 ,  B62D5/0463 ,  B62D7/09

Abstract: Provided is a steering system capable of enhancing traveling stability when a vehicle drives straight and improving small-turn performance. The steering system includes: a first steering device; a second steering device including a mechanical section configured to individually steer each of left and right wheels by driving a steering actuator and a control section configured to control the steering actuator; and a vehicle information detection section configured to detect a velocity of the vehicle and a steering angle. The control section includes a turning angle control module configured to control the steering actuator pursuant to a predetermined rule in accordance with the velocity of the vehicle and the steering angle so as to control turning angles of the left and right wheels.

公开(公告)号：US11459029B2

公开(公告)日：2022-10-04

申请号：US17025176

申请日：2020-09-18

Applicant: NTN CORPORATION

Inventor： Norio Ishihara ,  Atsushi Itou ,  Masato Abe ,  Yoshio Kano ,  Makoto Yamakado ,  Mitsunori Ishibashi

IPC: B62D6/00 ,  B62D5/00

Abstract: The steering system includes: a first steering device to-steer left and right wheels in a mechanically associated manner by changing an angle of left and right chassis frame components; and a second steering device to drive a supplementary turning actuator to change angles of the wheels relative to the chassis frame components. The second steering device includes a supplementary turning control section to perform a control to cause turning by a steering angle that is a difference between a steering angle determined by a numerical model of vehicle motion on the basis of the steering command angle and the vehicle velocity and an actual steering angle.

公开(公告)号：US11097768B2

公开(公告)日：2021-08-24

申请号：US16721519

申请日：2019-12-19

Applicant: NTN CORPORATION

Inventor： Hirokazu Ooba ,  Tomomi Ishikawa ,  Kentaro Nishikawa ,  Satoshi Utsunomiya ,  Yusuke Ohata ,  Taisuke Igi ,  Norio Ishihara

IPC: B62D5/04 ,  B62D7/18 ,  F16C19/18

Abstract: A supplemental turning function-equipped hub unit includes: a hub unit body including a hub bearing; and a unit support member configured to be mounted through a suspension device, the unit support member supporting the hub unit body through rotation-permitting support components at two upper and lower portions of the hub unit body such that the hub unit body is rotatable about a supplemental turning axis. A supplemental turning force receiving part is provided on a side part of the hub unit body, which part is configured to receive a force that causes the hub unit body to rotate about the supplemental turning axis.

公开(公告)号：US11731693B2

公开(公告)日：2023-08-22

申请号：US17032467

申请日：2020-09-25

Applicant: NTN CORPORATION

Inventor： Hirokazu Ooba ,  Satoshi Utsunomiya ,  Norio Ishihara ,  Yusuke Ohata

IPC: B62D6/00 ,  B62D5/04

CPC classification number: B62D6/002 ,  B62D5/0418

Abstract: Provided are a steering function-equipped hub unit that has a simple structure, high rigidity and a reduced size, a steering system, as well as a vehicle including the steering function-equipped hub unit. The steering function-equipped hub unit includes: a hub unit main body including a hub bearing supporting a wheel; a unit support member provided to a knuckle of a suspension device and rotatably supporting the hub unit main body about a turning axis extending in a vertical direction; and a steering actuator configured to rotationally drive the hub unit main body about the turning axis. The hub unit main body is supported by the unit support member through a preloaded rolling bearing.