公开(公告)号：US20160138942A1

公开(公告)日：2016-05-19

申请号：US15001856

申请日：2016-01-20

Applicant: NTN CORPORATION

Inventor： Toru Takahashi ,  Kentaro Nishikawa

IPC: G01D5/244 ,  G01D5/249

CPC classification number: G01D5/2449 ,  G01D5/145 ,  G01D5/2448 ,  G01D5/249

Abstract: The rotation detection device includes: an encoder having to-be-detected patterns cyclically arranged in the circumferential direction; and a sensor configured to detect the to-be-detected patterns to generate pulses. The device further includes a reference pattern storage unit, a phase difference detection unit, and an error correction unit. The reference pattern storage unit measures pitch errors in the to-be-detected patterns prior to operation and stores the pitch errors as a reference pattern Pref. The phase difference detection unit determines a pitch error pattern Pm corresponding to one rotation of the to-be-detected patterns from rotation signals representing a plurality of rotations detected during operation, and performs comparison with a reference pattern Pref to determine a relative phase difference φ. Based on the phase difference φ obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.

Abstract translation: 旋转检测装置包括：编码器，沿圆周方向循环地布置有要被检测的图案; 以及被配置为检测待检测图案以产生脉冲的传感器。 该装置还包括参考图案存储单元，相位差检测单元和纠错单元。 参考图案存储单元测量操作之前的待检测图案中的音调误差，并将音调误差存储为参考图案Pref。 相位差检测单元从表示在操作期间检测到的多个旋转的旋转信号中确定对应于待检测图案的一次旋转的音调误差图案Pm，并且与参考图案Pref进行比较以确定相对相位差＆phgr ;。 基于相位差 由所述相位差检测单元获得，所述误差校正单元校正由所述传感器检测到的旋转信号中包括的误差。

公开(公告)号：US12021427B2

公开(公告)日：2024-06-25

申请号：US16953218

申请日：2020-11-19

Applicant: NTN CORPORATION

Inventor： Yuuji Yada ,  Kentaro Nishikawa ,  Mitsuo Kawamura

IPC: H02K3/52 ,  B60B27/00 ,  B60K7/00 ,  H02K7/00 ,  H02K7/102 ,  B60T1/06

CPC classification number: H02K3/522 ,  B60B27/0015 ,  B60B27/0052 ,  B60K7/0007 ,  H02K7/006 ,  H02K7/102 ,  B60K2007/0092 ,  B60T1/065 ,  H02K2203/09

Abstract: Provided is a motor which includes a stator that can be received in a limited housing space and is capable of providing an increased output without increasing an axial length of the stator; a vehicle power unit including the motor; a generator; as well as a vehicle wheel bearing assembly with the generator. The motor generator includes: a stator including a stator core having an annular shape and stator coils wound around the stator core; and a rotor located opposite to the stator in a radial direction. Each of the stator coils includes coil ends that protrude with respect to an axial width of the stator core in an axial direction. A bus bar is connected to a wiring connection part at the coil ends, and the bus bar is disposed within an axial width of the stator core.

公开(公告)号：US10752104B2

公开(公告)日：2020-08-25

申请号：US16360714

申请日：2019-03-21

Applicant: NTN CORPORATION

Inventor： Mitsuo Kawamura ,  Kentaro Nishikawa ,  Tomomi Ishikawa ,  Takushi Matsuto

IPC: B60K7/00 ,  B60L7/10 ,  F16C41/00 ,  F16C19/18 ,  F16C19/00 ,  F16D65/18 ,  H02K11/21 ,  H02K7/00 ,  H02K7/08 ,  H02K7/102 ,  H02K21/22 ,  F16D55/225

Abstract: An auxiliary power unit equipped wheel support bearing assembly is provided which includes a wheel support bearing assembly and an auxiliary power unit. The auxiliary power unit is of a direct drive design that includes a stator mounted to a stationary ring of the wheel support bearing assembly and a motor rotor mounted to a rotational ring of the wheel support bearing assembly. An entirety of the auxiliary power unit is sized to extend less than an outer peripheral segment of a brake rotor, with the outer peripheral segment defining an area against which a brake caliper is intended to be pushed. The auxiliary power unit is, with respect to an axial direction, sized to be situated between a hub flange of the wheel support bearing assembly and a mounting face of the wheel support bearing assembly for mounting to a vehicle body of a vehicle.

公开(公告)号：US10112444B2

公开(公告)日：2018-10-30

申请号：US15151000

申请日：2016-05-10

Applicant: NTN CORPORATION

Inventor： Toru Takahashi ,  Kentaro Nishikawa ,  Nobuo Masaki ,  Yasumichi Wakao

IPC: B60C11/24 ,  G01M17/02 ,  B60C19/00

Abstract: A wear amount detection device to detect that a tire is in a worn state, during running, without a special sensor. The device includes a rotation sensor detecting rotation of a wheel to measure a speed of an automobile; a signal processing extracting rotation speed fluctuations synchronized with rotation, from a rotation signal detected by the rotation sensor, and obtain a rotation speed fluctuation pattern synchronized with rotation, from rotation speed fluctuations over a plurality of rotations; and a wear state determination configured to obtain, from the obtained pattern, a value of a component induced by a characteristic embodied in a tire of the wheel, the value varying in accordance with a wear state of the tire, to estimate a wear state of the tire, and to output the state.

公开(公告)号：US11577598B2

公开(公告)日：2023-02-14

申请号：US16810314

申请日：2020-03-05

Applicant: NTN CORPORATION

Inventor： Mitsuo Kawamura ,  Kentaro Nishikawa ,  Taisuke Igi ,  Yuuji Yada ,  Yasuyuki Fujita ,  Hiroki Yabuta

IPC: H02K7/06 ,  B60K7/00 ,  H02K11/21 ,  B60B35/18 ,  F16C19/18 ,  F16C41/00 ,  H02K7/00 ,  H02K7/08 ,  H02K7/102 ,  H02K21/22

Abstract: A wheel support bearing assembly includes a wheel support bearing and a power unit. The power unit is that of an outer rotor design in which a stator is located at an outer periphery of the wheel support bearing and a rotor is located radially outward of the stator. A radial extension of the entire power unit is sized to be radially inward of a peripheral section of a brake rotor. An entirety of the power unit, excluding a mount part thereof to a hub flange, is sized to be situated in an axial range between the hub flange and a mount surface, on an inboard side of the wheel support bearing. The rotor includes an outer shell magnetic body, which is made from soft magnetic material and forms an outer shell of the power unit, and permanent magnets that are provided to the outer shell magnetic body.

公开(公告)号：US11447003B2

公开(公告)日：2022-09-20

申请号：US16850576

申请日：2020-04-16

Applicant: NTN CORPORATION

Inventor： Hiroki Yabuta ,  Kentaro Nishikawa ,  Mitsuo Kawamura ,  Yasuyuki Fujita ,  Yuuji Yada

IPC: B60K7/00 ,  B60B27/00 ,  H02K7/00 ,  H02K7/102 ,  H02K21/22 ,  B60K6/26

Abstract: The vehicle power device includes: a wheel bearing including a stationary ring and a rotary ring; and a motor including a stator and a rotor. The stator and the rotor of the motor generator have a smaller diameter than that of an outer peripheral part of the brake rotor, and an entirety of the motor, excluding a mounting part to the hub flange, is located within an axial range between the hub flange and an outboard-side surface of a chassis frame component. An insulating layer is interposed between the stationary ring and the stator.

公开(公告)号：US09823094B2

公开(公告)日：2017-11-21

申请号：US15001856

申请日：2016-01-20

Applicant: NTN CORPORATION

Inventor： Toru Takahashi ,  Kentaro Nishikawa

IPC: G01R33/025 ,  G01P3/481 ,  G01D5/244 ,  G01D5/14 ,  G01D5/249

CPC classification number: G01D5/2449 ,  G01D5/145 ,  G01D5/2448 ,  G01D5/249

Abstract: The rotation detection device includes: an encoder having to-be-detected patterns cyclically arranged in the circumferential direction; and a sensor configured to detect the to-be-detected patterns to generate pulses. The device further includes a reference pattern storage unit, a phase difference detection unit, and an error correction unit. The reference pattern storage unit measures pitch errors in the to-be-detected patterns prior to operation and stores the pitch errors as a reference pattern Pref. The phase difference detection unit determines a pitch error pattern Pm corresponding to one rotation of the to-be-detected patterns from rotation signals representing a plurality of rotations detected during operation, and performs comparison with a reference pattern Pref to determine a relative phase difference φ. Based on the phase difference φ obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.

公开(公告)号：US11634021B2

公开(公告)日：2023-04-25

申请号：US16850604

申请日：2020-04-16

Applicant: NTN CORPORATION

Inventor： Mitsuo Kawamura ,  Kentaro Nishikawa ,  Yuuji Yada ,  Yasuyuki Fujita ,  Hiroki Yabuta

IPC: B60K6/26 ,  B60K7/00 ,  H02K7/08

Abstract: The power device for a vehicle includes: a wheel bearing including a stationary ring and a rotary ring having a hub flange, the rotary ring being rotatably supported by the stationary ring via rolling element, the hub flange being configured to be attached with a wheel of a vehicle and a brake rotor; and a generator including a stator attached to the stationary ring of the wheel bearing and a rotor attached to the rotary ring of the wheel bearing, wherein the rotor includes a soft magnetic material part, magnets, and a resin material part that is integrally molded with the soft magnetic material part and the magnets.

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：US20180095008A1

公开(公告)日：2018-04-05

申请号：US15815244

申请日：2017-11-16

Applicant: NTN Corporation

Inventor： Yasutaka Kusumi ,  Yuichiro Noro ,  Hiroya Kato ,  Kentaro Nishikawa

IPC: G01M17/013 ,  G01L5/00

CPC classification number: G01M17/013 ,  B60B3/16 ,  B60B11/06 ,  B60B2900/325 ,  B60B2900/3316 ,  B60R16/027 ,  G01L5/00 ,  G01M17/007

Abstract: Provided is a device for determining a wheel fastening state that allows a wheel fastening state to be monitored during running. The device includes a sensor unit (3) that is attachable to and detachable from a wheel fastening part, an information terminal (4) that is an in-vehicle device (4A) or a portable terminal (4B), and a server (30). The terminal (4) includes a measurement instruction module (23) to read vehicle state data from a control and communication system (5) of a vehicle and send an instruction for to measurement to the sensor unit (3) at determined timing. The server (30) includes a first information processing module (32) configured to determine an abnormality of a fastening state of the wheel fastening part by comparing the measurement data with accumulated data that is measured under the same condition and stored in the past.