公开(公告)号：US20220320919A1

公开(公告)日：2022-10-06

申请号：US17843216

申请日：2022-06-17

申请人： NTN CORPORATION

发明人： Mitsuo KAWAMURA

IPC分类号： H02K1/14 ,  H02K1/2786

摘要： The stator core is divided into an annular part and a plurality of teeth, including a tooth main part and a distal end part, having a larger circumferential width than a circumferential width of the tooth main part, and the annular part includes a plurality of fitting grooves, in the circumferential direction on an outer peripheral surface, extending in an axial direction and having a sectional shape with a narrowed part on an open side. Each of the teeth includes, at a base end part, a fitting part having a sectional shape that allows the fitting part, fitted into a fitting groove, inserted into the fitting groove of the annular part in the axial direction fitted to the annular part in an undetachable manner in a radial direction, and the fitting part has a maximum width in the circumferential direction smaller than the circumferential width of the tooth main part.

公开(公告)号：US20170152891A1

公开(公告)日：2017-06-01

申请号：US15127762

申请日：2015-03-20

申请人： NTN CORPORATION

发明人： Mitsuo KAWAMURA ,  Tomohiko OBATA

IPC分类号： F16C33/44 ,  F16C41/00 ,  F16C33/66 ,  F16C33/78 ,  F16C19/06 ,  F16C33/41

CPC分类号： F16C41/002 ,  F16C19/06 ,  F16C33/416 ,  F16C33/445 ,  F16C33/6633 ,  F16C33/6637 ,  F16C33/7816 ,  F16C33/7853

摘要： A rolling bearing that can easily achieve the higher lubricating characteristic including the smaller rotational torque while employing the existing bearing shape and lubricant is provided. A rolling bearing 1 includes: an inner ring 2 and an outer ring 3 as a race ring; a plurality of rolling elements 4 held between the inner and outer rings; a retainer 5 that retains the rolling elements 4; a sealing member 11 provided at openings on opposite ends in an axial direction of the inner ring 2 and the outer ring 3; and grease 12 to be enclosed in an in-bearing space. At least one member selected from the inner ring 2, the outer ring 3, the retainer 5, and the sealing member 11 is provided with a flocking part 6 formed by flocking fiber on a surface of the member which is in contact with the grease 12.

公开(公告)号：US20210075289A1

公开(公告)日：2021-03-11

申请号：US16953218

申请日：2020-11-19

申请人： NTN CORPORATION

发明人： Yuuji YADA ,  Kentaro NISHIKAWA ,  Mitsuo KAWAMURA

IPC分类号： H02K3/52 ,  H02K7/00 ,  H02K7/102 ,  B60K7/00 ,  B60B27/00

摘要： 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：US20180355909A1

公开(公告)日：2018-12-13

申请号：US15780016

申请日：2016-11-16

申请人： NTN CORPORATION

发明人： Masato YOSHINO ,  Hiroki FUJIWARA ,  Mitsuo KAWAMURA

IPC分类号： F16C17/02 ,  F16C27/02 ,  F16C43/02

CPC分类号： F16C17/024 ,  F16C27/02 ,  F16C43/02 ,  F16C2360/23

摘要： The present invention provides a foil bearing (10), including: a top foil portion (Tf); and a back foil portion (Bf), which is arranged on a back of the top foil portion (Tf), and is configured to elastically support the top foil portion (Tf), wherein the back foil portion (Bf) includes: an intermediate portion (23) being flat; first projecting portions (21) projecting on a front side of the intermediate portion (23); and second projecting portions (22) projecting on a back side of the intermediate portion (23).

公开(公告)号：US20200276896A1

公开(公告)日：2020-09-03

申请号：US16850604

申请日：2020-04-16

申请人： NTN CORPORATION

发明人： Mitsuo KAWAMURA ,  Kentaro NISHIKAWA ,  Yuuji YADA ,  Yasuyuki FUJITA ,  Hiroki YABUTA

IPC分类号： B60K6/26 ,  B60K7/00

摘要： 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：US20200238817A1

公开(公告)日：2020-07-30

申请号：US16850576

申请日：2020-04-16

申请人： NTN CORPORATION

发明人： Hiroki YABUTA ,  Kentaro NISHIKAWA ,  Mitsuo KAWAMURA ,  Yasuyuki FUJITA ,  Yuuji YADA

IPC分类号： B60K7/00 ,  B60B27/00 ,  H02K7/00 ,  H02K7/102 ,  H02K21/22

摘要： 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：US20190217696A1

公开(公告)日：2019-07-18

申请号：US16358842

申请日：2019-03-20

申请人： NTN CORPORATION

发明人： Mitsuo KAWAMURA ,  Kentaro NISHIKAWA ,  Tomomi ISHIKAWA ,  Yasuyuki FUJITA

IPC分类号： B60K7/00 ,  B60K6/445 ,  B60K6/52 ,  B60L15/20

CPC分类号： B60K7/0007 ,  B60K6/26 ,  B60K6/28 ,  B60K6/40 ,  B60K6/445 ,  B60K6/48 ,  B60K6/52 ,  B60K6/54 ,  B60K7/00 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L1/00 ,  B60L7/14 ,  B60L9/18 ,  B60L15/20 ,  B60L50/50 ,  B60R16/03 ,  Y02T10/6221 ,  Y02T10/6265 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7275

摘要： A vehicle power assist system can be applied to a vehicle with a driven wheel (4) that is mechanically unconnected to a main drive source (5) such as an internal combustion engine. The driven wheel (4) is supported by a wheel support bearing assembly (31) to which a drive assist, motor generator (8) is mounted. A rotor of the motor generator (8) is directly fixed to a rotational ring of the wheel support bearing assembly (31) without interposition of a speed reducing mechanism or a speed increasing mechanism. The vehicle power assist system includes a power storage unit (19) configured to store a regenerative power generated by the motor generator (8) and to supply the stored power to the motor generator (8).