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公开(公告)号：US20210362770A1
公开(公告)日：2021-11-25
申请号：US17394913
申请日：2021-08-05
申请人： NTN CORPORATION
发明人： Satoshi UTSUNOMIYA , Yusuke OHATA
摘要： Provided is a steering function-equipped hub unit including: a hub unit body including a hub bearing; a unit support member configured to be provided to a chassis frame component, the unit support member supporting the hub unit body such that the hub unit body is rotatable about a turning axis extending in a vertical direction; and a steering actuator configured to rotationally drive the hub unit body about the turning axis, wherein the hub bearing includes an outer race integrally provided with turning shaft parts protruding upward and downward in the vertical direction on an outer peripheral surface of the outer race, each of the turning shaft parts having an axis coinciding with the turning axis, and the hub unit body is rotatably supported by the unit support member through the turning shaft parts.
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公开(公告)号：US20220410969A1
公开(公告)日：2022-12-29
申请号：US17903090
申请日：2022-09-06
申请人： NTN CORPORATION
发明人： Hirokazu OOBA , Yusuke OHATA
摘要： The steering function-equipped hub unit includes: a turning shaft-equipped hub bearing (15) 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 (3) rotatably supporting the turning shaft-equipped hub bearing (15) about a turning axis of the turning shaft; and a steering actuator (5) configured to rotationally drive the turning shaft-equipped hub bearing (15) about the turning axis (A). The unit support member (3) and the steering actuator (5) include a flange (3a) and an end portion (25Aa), respectively, to be removably fixed to a knuckle (6) which is a chassis frame component of a vehicle.
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公开(公告)号：US20200282769A1
公开(公告)日：2020-09-10
申请号：US16883321
申请日：2020-05-26
申请人： NTN CORPORATION
发明人： Satoshi UTSUNOMIYA , Hirokazu OOBA , Yusuke OHATA
摘要： 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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公开(公告)号：US20210197887A1
公开(公告)日：2021-07-01
申请号：US17204270
申请日：2021-03-17
申请人： NTN CORPORATION
发明人： Yusuke OHATA , Hirokazu OOBA , Satoshi UTSUNOMIYA
摘要： The present invention relates to a steering function-equipped hub unit (1) having a function of steering a rear wheel, the hub unit including: a hub unit body (2) having a hub bearing (15) configured to support the rear wheel (9R); a unit support member (3) rotatably supporting the hub unit body (2) about a turning axis (A) extending in a vertical direction, the unit support member being configured to be provided to a rear-wheel suspension (Rs); and a steering actuator (5) configured to rotate the hub unit body (2) about the turning axis (A).
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公开(公告)号：US20210009199A1
公开(公告)日：2021-01-14
申请号：US17032467
申请日：2020-09-25
申请人： NTN CORPORATION
摘要： 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.
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公开(公告)号：US20210309285A1
公开(公告)日：2021-10-07
申请号：US17350658
申请日：2021-06-17
申请人： NTN CORPORATION
发明人： Hirokazu OOBA , Satoshi UTSUNOMIYA , Yusuke OHATA
摘要： Provided is a steering function equipped hub unit (1) including: a hub unit body (2); a unit support member (3) configured to be provided to a knuckle (6) and to support the hub unit body (2) such that the hub unit body is rotatable about a turning axis (A) extending in a vertical direction; and a steering actuator (5) configured to rotate the hub unit body (2) about the turning axis (A), wherein the steering actuator (5) includes a motor (26) and a linear motion mechanism (25) configured to convert a rotary output from the motor (26) into a linear motion, the linear motion mechanism (25) includes a feed screw mechanism (33) of a sliding screw type including a nut part (36) and a threaded shaft (36), and a surface hardening layer is provided on at least a threaded surface of one or both of the nut part (35) and the threaded shaft (36).
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公开(公告)号：US20210155283A1
公开(公告)日：2021-05-27
申请号：US17103030
申请日：2020-11-24
发明人： Kyohei SAKAGAMI , Toru YAGASAKI , Yusuke OHATA , Hirokazu OOBA
IPC分类号： B62D5/04
摘要： Provided is a steering function-equipped hub unit for steering a rear wheel configured to be supported by a suspension device including a torsion beam and a pair of trailing arms. The hub unit includes: a turning shaft-equipped hub bearing including a turning shaft extending in a vertical direction and configured to rotatably support the rear wheel; a unit support member supporting the turning shaft-equipped hub bearing such that the turning shaft-equipped hub bearing is rotatable about a turning axis; and a steering actuator separate from the unit support member and configured to rotationally drive the turning shaft-equipped hub bearing. The steering actuator is attached to the suspension device at a position higher than a lowermost surface of the torsion beam and between a rotation support part of the suspension device and the turning shaft-equipped hub bearing.
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公开(公告)号：US20230356768A1
公开(公告)日：2023-11-09
申请号：US18220526
申请日：2023-07-11
申请人： NTN CORPORATION
发明人： Satoshi UTSUNOMIYA , Yusuke OHATA
CPC分类号： B62D5/0418 , B62D5/0403 , B62D5/0442 , B62D7/08
摘要： A hub unit with a steering function includes: a hub bearing that rotatably supports a wheel; a cylindrical turning shaft section extending from an outer ring thereabove and thereunder with the outer ring being located at an outer peripheral surface of an outer race of the hub bearing; a steering actuator that causes the hub bearing to rotate about an axis of the turning shaft section; a unit support member that rotatably supports the hub bearing about the axis on a vehicle body; and an arm section projecting from the outer ring rearward of a vehicle, with the actuator being coupled to the arm section. The actuator includes: an extensible and retractable assembly capable of providing extension or retraction in a direction perpendicular to the axis; and the extensible and retractable assembly is coupled to the arm section through a joint assembly providing two or more directions of freedom.
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公开(公告)号：US20210009193A1
公开(公告)日：2021-01-14
申请号：US17032176
申请日：2020-09-25
申请人： NTN CORPORATION
IPC分类号： B62D5/04
摘要： 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.
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