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    Steering system and vehicle equipped with same
    1.
    发明授权
    Steering system and vehicle equipped with same 有权

    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.

    LINK ACTUATING DEVICE
    2.
    发明申请
    LINK ACTUATING DEVICE 有权
    链接激活设备

    公开(公告)号：US20140227023A1

    公开(公告)日：2014-08-14

    申请号：US14346536

    申请日：2012-09-24

    Applicant: NTN CORPORATION

    Inventor： Keisuke Sone ,  Hirokazu Ooba ,  Arito Matsui ,  Hiroki Mukai

    IPC: F16G11/12

    CPC classification number: F16D3/30 ,  A61F5/01 ,  B25J9/0048 ,  F16H21/54 ,  F16M11/121 ,  F16M11/18 ,  F16M13/00 ,  Y10T403/36

    Abstract: A link actuating device includes input side and output side link hubs, and two sets of link mechanisms. Each of the link mechanisms is a three-link-chain link mechanism including four revolute pairs, and includes input side and output side end links rotatably connected to the input side and output side link hubs and an intermediate links rotatably connected to input side and output side end links. The link mechanism have a positional relationship in which the revolute pair axes between the link hubs and the end links are located on the same plane and cross each other. At least one of the two sets of link mechanisms is provided with interlocking unit that interlocks the input side end link and the output side end link to each other so as to be rotationally displaced.

    Abstract translation: 链接致动装置包括输入侧和输出侧连接毂，以及两组连杆机构。 每个链接机构是包括四个旋转对的三连杆链节机构，包括可旋转地连接到输入侧和输出侧连接轮毂的输入侧和输出侧端连杆，以及可旋转地连接到输入侧和输出的中间连杆 侧端连接。 连杆机构具有位置关系，其中连杆毂和端部连杆之间的旋转对轴线位于相同的平面上并交叉。 两组连杆机构中的至少一个设置有互锁单元，其将输入侧端部连杆和输出侧端部连杆彼此互锁以便被旋转地移位。

    Hub unit having steering function, and vehicle equipped with same
    3.
    发明授权
    Hub unit having steering function, and vehicle equipped with same 有权

    公开(公告)号：US11851123B2

    公开(公告)日：2023-12-26

    申请号：US17903090

    申请日：2022-09-06

    Applicant: NTN CORPORATION

    Inventor： Hirokazu Ooba ,  Yusuke Ohata

    IPC: B62D7/08 ,  B62D7/18 ,  F16C19/49

    CPC classification number: B62D7/18 ,  B62D7/08 ,  F16C19/49 ,  F16C2326/02

    Abstract: The steering function-equipped hub unit includes: a turning shaft-equipped hub bearing including an inner ring, an outer ring, and rolling elements in double rows interposed between the inner ring and the outer ring, the turning shaft-equipped hub bearing having a turning shaft extending in a vertical direction; a unit support member rotatably supporting the turning shaft-equipped hub bearing (15) about a turning axis of the turning shaft; and a steering actuator configured to rotationally drive the turning shaft-equipped hub bearing about the turning axis (A). The unit support member and the steering actuator include a flange and an end portion, respectively, to be removably fixed to a knuckle which is a chassis frame component of a vehicle.

    Speed reducer
    5.
    发明授权
    Speed reducer 审中-公开

    公开(公告)号：US10670121B2

    公开(公告)日：2020-06-02

    申请号：US16318489

    申请日：2017-07-10

    Applicant: NTN CORPORATION

    Inventor： Taisuke Igi ,  Hirokazu Ooba ,  Takashi Nozaki

    IPC: F16H25/06

    Abstract: The retainer is provided so as to be prevented from being rotatable with respect to the rotary shaft, and rotation of the input-side rotary member is reduced in speed and transmitted to the output-side rotary member through intermediation of the balls which engage with both of the ball engagement grooves. A raceway center line of the second ball engagement groove is formed of a wave-shaped curve. When a speed reduction ratio of the speed reducer is represented by “i”, the wave-shaped curve has such a shape that the balls which engage with the first ball engagement groove engage with the second ball engagement groove at a given rotation angle (θ) of the input-side rotary member in a state in which the output-side rotary member is at a rotation angle (iθ).

    Hub unit with steering function, steering system, and vehicle
    6.
    发明授权
    Hub unit with steering function, steering system, and vehicle 有权

    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.

    In-wheel motor drive device
    8.
    发明授权
    In-wheel motor drive device 有权

    公开(公告)号：US10118479B2

    公开(公告)日：2018-11-06

    申请号：US14916792

    申请日：2014-09-12

    Applicant: NTN CORPORATION

    Inventor： Taisuke Igi ,  Hirokazu Ooba

    IPC: B60K7/00 ,  F16D55/226 ,  F16D65/00 ,  B60K17/04 ,  F16D55/2265 ,  F16D121/20 ,  F16D55/00

    Abstract: An in-wheel motor drive device is provided including a brake caliper which can be easily mounted in position and dismounted. The in-wheel motor drive device includes a hub to which the wheel body of a vehicle wheel is mounted, an electric motor arranged inside of the hub in the width direction of the vehicle so as to be coaxial with the hub, a motor housing in which are received the electric motor, and the brake caliper, which is arranged to clamp a brake disk through a pair of brake pads disposed on both sides of the brake disk. The brake caliper is fixed to the outer periphery of the motor housing by driving bolts radially inwardly, from radially outside, of the motor housing.

    Hub unit having steering function, and vehicle provided with said hub unit
    9.
    发明授权
    Hub unit having steering function, and vehicle provided with said hub unit 有权

    公开(公告)号：US11565548B2

    公开(公告)日：2023-01-31

    申请号：US16883321

    申请日：2020-05-26

    Applicant: NTN CORPORATION

    Inventor： Satoshi Utsunomiya ,  Hirokazu Ooba ,  Yusuke Ohata

    IPC: B60B27/00 ,  B60B27/02 ,  B62D5/04 ,  B62D7/15 ,  B62D7/18

    Abstract: Provided is a turning function-equipped having a reduced size and having improved strength to an external shock force and improved reliability. The turning function-equipped hub unit includes: a hub unit main body; a unit support member; and a turning actuator. The unit support member is provided to a chassis frame component. The unit support member includes an abutment part with which a part of the hub unit main body is brought into abutment in a vertical direction during non-normal time, the abutment part being separated from the hub unit main body in the vertical direction during normal time, and the non-normal time in which the abutment is caused, is a time when an impact load equal to or greater than a predetermined value acts on the hub unit main body in the vertical direction due to an external force from the wheel.

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