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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
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.
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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.
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3.发明授权公开(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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US10132358B2
公开(公告)日：2018-11-20
申请号：US15127762
申请日：2015-03-20
Applicant: NTN CORPORATION
Inventor： Mitsuo Kawamura , Tomohiko Obata
Abstract: 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.
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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
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.
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公开(公告)号：US11641146B2
公开(公告)日：2023-05-02
申请号：US16705994
申请日：2019-12-06
Applicant: NTN CORPORATION
Inventor： Hiroki Yabuta , Mitsuo Kawamura , Kentaro Nishikawa
IPC: H02K7/18 , B60B27/00 , F16C41/00 , H02K1/2786
Abstract: Provided is a wheel bearing apparatus with a generator that can have a simplified structure to reduce costs and is capable of preventing electrolytic corrosion. The wheel bearing apparatus with a generator includes a wheel bearing and a generator. The generator includes a stator attached to a fixed wheel and a motor rotor attached to a rotating wheel and is of an outer-rotor type in which the stator is located on an outer periphery of the wheel bearing, and the motor rotor is located radially outside of the stator. The wheel bearing apparatus with the generator further includes at least one conducting unit that conducts a current between the fixed wheel and the rotating wheel.
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公开(公告)号：US20190248225A1
公开(公告)日：2019-08-15
申请号：US16360714
申请日：2019-03-21
Applicant: NTN CORPORATION
Inventor： Mitsuo Kawamura , Kentaro Nishikawa , Tomomi Ishikawa , Takushi Matsuto
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.
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