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公开(公告)号：US20190285152A1
公开(公告)日：2019-09-19
申请号：US16318489
申请日：2017-07-10
申请人： NTN CORPORATION
发明人： Taisuke IGI , Hirokazu OOBA , Takashi NOZAKI
IPC分类号： F16H25/06
摘要： 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).
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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：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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公开(公告)号：US20160214474A1
公开(公告)日：2016-07-28
申请号：US14916792
申请日：2014-09-12
申请人： NTN CORPORATION
发明人： Taisuke IGI , Hirokazu OOBA
IPC分类号： B60K7/00 , F16D55/2265
CPC分类号： B60K7/0007 , B60K17/043 , B60K2007/0038 , B60K2007/0092 , F16D55/226 , F16D55/2265 , F16D65/0056 , F16D65/0075 , F16D2055/0008 , F16D2121/20
摘要： 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.
摘要翻译： 提供了一种轮毂电动机驱动装置，其包括可容易地安装就位和拆卸的制动钳。 轮毂电动机驱动装置包括：车轮车轮安装在其上的轮毂，沿车轮宽度方向配置在车轮宽度方向内侧的电动机，与轮毂同轴;马达壳体， 接收电动机的制动钳和制动钳，其布置成通过设置在制动盘两侧的一对制动衬块夹紧制动盘。 通过从电动机壳体的径向外侧径向向内驱动螺栓将制动钳固定到电动机壳体的外周。
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公开(公告)号：US20160167698A1
公开(公告)日：2016-06-16
申请号：US14908786
申请日：2014-07-15
申请人： NTN CORPORATION
发明人： Hirokazu OOBA , Tomomi ISHIKAWA , Taisuke IGI , Yuya YAMAGUCHI
CPC分类号： B62D3/126 , B60K7/0007 , B60K17/046 , B60K17/30 , B60K2007/0038 , B60K2007/0092 , B62D5/0421 , B62D7/14 , B62D7/1509 , B62D7/18
摘要： A steering device including tie rods connected to right and left wheels, and configured to steer the wheels, and rack bars connected to the respective tie rods, and, is capable of simultaneously steering the right and left wheels to the right or left of the vehicle, by moving the rack bars to the right or left. A rack bar moving arrangement is provided which is capable of moving the rack bars in opposite directions by the same distance, and rack teeth are arranged along the opposite directions. The rack bar moving arrangement includes a synchronizing gear in mesh with the rack bars, and configured to convert the movement of one of the rack bars in one of the opposite directions to the movement of the other rack bars in the other opposite directions, thereby steering the wheels in opposite directions.
摘要翻译： 一种转向装置，包括连接到右车轮和左车轮的连杆，并且构造成转向车轮，并且连接到相应的拉杆的齿条，并且能够同时将左右车轮转向车辆的右侧或左侧 通过将支架杆移动到右侧或左侧。 提供了一种能够沿相反方向将搁架杆移动相同距离的齿条移动装置，并且齿条齿沿相反方向布置。 齿条移动装置包括与齿杆啮合的同步齿轮，并被构造成将一个齿条的一个相反方向的运动转换成另一个齿条在另一相反方向上的运动，从而转向 车轮相反方向。
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