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    ELECTRIC VEHICLE
    12.
    发明公开
    ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP2684735A4

    公开(公告)日：2016-04-13

    申请号：EP12754611

    申请日：2012-03-05

    申请人： NTN TOYO BEARING CO LTD

    发明人： OZAKI TAKAYOSHI

    IPC分类号： B60L15/20 ,  B60K7/00 ,  B60L3/10 ,  B60W10/00 ,  B60W30/00

    CPC分类号： B60L3/106 ,  B60K7/0007 ,  B60L15/20 ,  B60L2240/423 ,  B60L2240/461 ,  B60L2240/463 ,  B60L2260/44 ,  Y02T10/645 ,  Y02T10/7258 ,  Y02T10/7275

    摘要： An electric vehicle includes a slip ratio estimator (42) that estimates a slip ratio (») based on rotational frequencies (N1, N2) of respective driven and drive wheels. The vehicle also includes a disturbance observer (43) that determines an estimate (^Te) of a torque attributable to external force. The vehicle also includes an estimator (44) that may estimate an entire torque (T) to the drive wheel (2), based on a motor torque command value (Tm) and the estimate (^Te) of torque. The vehicle also includes an estimator (45) that estimates a coefficient (µ) of friction between a road surface and a tire, based on the entire torque and the slip ratio. The vehicle also includes a determiner (46) that determines a maximum acceptable torque Tmax, based on the coefficient (µ) of friction and a vertical load component (^Fz). Torque limitation is performed such that the motor torque command value (Tm) does not exceed the maximum acceptable torque Tmax.

    SENSOR-EQUIPPED BEARING FOR WHEEL
    13.
    发明公开
    SENSOR-EQUIPPED BEARING FOR WHEEL 审中-公开
    随着对车轮带有传感器的轴承

    公开(公告)号：EP1962073A4

    公开(公告)日：2016-03-16

    申请号：EP06823549

    申请日：2006-12-01

    申请人： NTN TOYO BEARING CO LTD

    发明人： OZAKI TAKAYOSHI ,  ISHIKAWA TOMOMI ,  NISHIKAWA KENTAROU

    IPC分类号： G01L5/00 ,  B60B35/18 ,  F16C19/18 ,  F16C19/52 ,  F16C41/00 ,  G01D5/245

    CPC分类号： B60B27/0094 ,  B60B27/0005 ,  B60B27/0068 ,  F16C19/186 ,  F16C19/522 ,  F16C33/58 ,  F16C2326/02 ,  G01L5/0023 ,  G01P3/443

    摘要： The wheel support bearing assembly is for rotatably supporting a vehicle wheel relative to an automotive vehicle body, which includes an outer member having an inner periphery formed with a plurality of rows of raceway surfaces, an inner member having raceway surfaces formed therein in face-to-face relation with the raceway surfaces in the outer member, and a plurality of rows of rolling elements interposed between those raceway surfaces, respectively; a sensor unit including a sensor mounting member and a strain sensor fitted to the sensor mounting member, the sensor unit being fitted to a stationary member, which is one of the outer member and the inner member; and wherein the sensor mounting member includes at least two contact fixing portion relative to the stationary member and the strain sensor is arranged at at least one location between the contact fixing portions.

    BEARING DEVICE FOR WHEEL
    16.
    发明公开
    BEARING DEVICE FOR WHEEL 有权
    LAGERVORRICHTUNGFÜRRAD

    公开(公告)号：EP1717467A4

    公开(公告)日：2007-05-23

    申请号：EP05709876

    申请日：2005-02-08

    申请人： NTN TOYO BEARING CO LTD

    发明人： IWAMOTO KENICHI ,  OZAKI TAKAYOSHI ,  KOIKE TAKASHI

    IPC分类号： F16C19/52 ,  B60B27/00 ,  F16C19/18 ,  F16C43/04 ,  G01L5/00

    CPC分类号： F16C19/186 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/0084 ,  B60B27/0094 ,  F16C19/185 ,  F16C19/522 ,  F16C43/04 ,  F16C2326/02 ,  G01L5/0019

    摘要： A bearing device for a wheel, where preload control is easy and a uniform amount of preload can be applied even if a bearing seal is installed in the bearing device. The bearing device rotatably supports a wheel relative to a vehicle body and has an outer member (1), an inner member (2), and rolling bodies (3) interposed between both members. The outer member (1) has on its outer periphery a vehicle body installation flange (1a), and double-row rolling surfaces (6, 7) are formed on the inner peripheral surfaces of the outer member. Rolling surfaces (8, 9) facing the rolling surfaces (6, 7) of the outer member (1) are formed on the inner member (2). Between the rolling surfaces of both members (1, 2) are interposed the rolling bodies (3) in double rows. A sensor (4) for detecting the amount of preload of the bearing is provided on either the outer member (1) or the inner member (2).

    摘要翻译： 一种用于车轮的轴承装置，即使在轴承装置中安装了轴承密封件，其预载控制也很容易，并且可以施加均匀的预载荷。 该轴承装置相对于车体可旋转地支撑车轮，并具有外部构件（1），内部构件（2）和介于两个构件之间的滚动体（3）。 外部件（1）在其外周上具有车身安装法兰（1a），并且在外部件的内周表面上形成双列滚动表面（6,7）。 在内部构件（2）上形成面向外部构件（1）的滚动表面（6,7）的滚动表面（8,9）。 在两个构件（1,2）的滚动表面之间将滚动体（3）插入成双排。 在外部件（1）或内部件（2）上提供用于检测轴承的预加载量的传感器（4）。

    ELECTRIC AUTOMOBILE
    17.
    发明公开
    ELECTRIC AUTOMOBILE 审中-公开

    公开(公告)号：EP2680436A4

    公开(公告)日：2017-11-08

    申请号：EP12748948

    申请日：2012-02-10

    申请人： NTN TOYO BEARING CO LTD

    发明人： OZAKI TAKAYOSHI

    IPC分类号： B60L3/00 ,  B60L15/20

    CPC分类号： B60L15/20 ,  B60L3/0038 ,  B60L3/0061 ,  B60L3/0092 ,  B60L15/10 ,  B60L2220/46 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2260/26 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7275

    摘要： An electric vehicle includes a motor unit (6) configured to drive a wheel (2), an ECU (21) and an inverter unit (22). A motor control circuitry (29) of the inverter unit (22) includes a rotational frequency controller (37) operable to perform rotational frequency control. The electric vehicle also includes a torque control abnormalities detector (38) configured to detect an abnormality of torque control performed by the motor control circuitry (29). The electric vehicle also includes a control mode switcher (39) configured to, in response to determination by the torque control abnormalities detector (38) that there is an abnormality of torque control, cause the motor control circuitry (29) to switch from torque control to rotational frequency control performed by the rotational frequency controller (37).