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1. 发明授权

US11025129B2 Wire support for motor stator 有权
公开(公告)号：US11025129B2
公开(公告)日：2021-06-01
申请号：US16286654
申请日：2019-02-27
申请人： Nidec Corporation
发明人： Keisuke Fukunaga , Takayuki Migita
IPC分类号： H02K5/22 , H02K5/16 , H02K3/50 , H02K3/28 , H02K5/15 , H02K5/173
摘要： A motor includes a section with coils, a stator core, a wire support made of resin and fixed to the stator core, a cylindrical portion with a cylindrical shape extending in the axial direction on a radially outer side of the coils, and a top plate portion extending from the cylindrical portion toward an inside of the stationary section in a radial direction. The wire support includes holding portions provided with through holes or notches penetrating in the axial direction. Conducting wires drawn from the coils extend upward through the through holes or the notches. The top plate portion includes top plate holes. The holding portions and the top plate holes are mutually disposed at a position overlapping in the radial direction and the holding portions are within circumferences of the top plate holes when viewed in the axial direction.

2. 发明授权

US10879769B2 Motor unit 有权
公开(公告)号：US10879769B2
公开(公告)日：2020-12-29
申请号：US16323910
申请日：2017-08-08
申请人： Nidec Corporation
发明人： Yuki Ishikawa , Yasuo Yamaguchi , Takayuki Migita
IPC分类号： H02K9/19 , H02K5/20 , H02K21/16 , H02K7/116 , F16D63/00 , B60T1/00
CPC分类号： H02K9/19 , H02K5/20 , H02K7/116 , H02K21/16 , B60T1/005 , F16D63/006
摘要： A motor unit includes a motor including a rotor to rotate about a motor axis extending in a horizontal direction, a differential connected to the motor, a housing including a housing space to house the motor and the differential, oil in a vertically lower region of the housing space, and an oil passage to feed the oil from the vertically lower region of the housing space to the motor. A pump is fixed to an outer peripheral surface of the housing and is located in a channel of the oil passage. The pump is on an opposite side of the motor axis with respect to the differential when viewed in an axial direction of the motor axis.

3. 发明授权

US10833569B2 Rotor core, rotor, motor, manufacturing method of rotor core, and manufacturing method of rotor 有权
公开(公告)号：US10833569B2
公开(公告)日：2020-11-10
申请号：US16325435
申请日：2017-09-29
申请人： Nidec Corporation
发明人： Takayuki Migita , Takeshi Honda , Hirofumi Muto , Osamu Fujimoto , Hiroshi Kitagaki , Yasuaki Nakahara
IPC分类号： H02K15/00 , H02K1/27 , H02K1/22 , H02K15/02
摘要： A rotor core includes laminate steel plates extending in a radial direction with respect to a central axis. The laminate steel plates each include a base portion on a radially outer side of the central axis, and pieces separately disposed on a radially outer side of the base portion with penetrating portions therebetween, and arranged side by side at predetermined intervals in a circumferential direction. The laminate steel plates are laminated in an axial direction. The laminated steel plate at an upper end in the axial direction includes at least one of an outward projection extending radially outward from an outer edge portion of the base portion and an inward projection extending radially inward from an inner edge portion of the piece, and the laminated steel plate at a lower end in the axial direction includes an intervening portion between the base portion and the piece portion.

4. 发明授权

US10680482B2 Stator, motor, and compressor 有权
公开(公告)号：US10680482B2
公开(公告)日：2020-06-09
申请号：US16058324
申请日：2018-08-08
申请人： NIDEC CORPORATION
发明人： Toshiya Okamoto , Shota Kawashima , Masato Aono , Takayuki Migita
IPC分类号： H02K3/52 , H02K5/22 , H02K3/28 , H02K1/14 , H02K1/27 , H02K3/18 , H02K3/30 , H02K3/32 , H02K7/14 , H02K5/12 , B60H1/32
摘要： A stator includes a plurality of lead wires extending upward from a coil and a guide member supporting the lead wire above the coil. The guide member is an insulating body. The guide member includes a lower plate, an inner wall, and an upper plate. The lower plate spreads annularly around a central axis. The inner wall extends upward from an inner circumference of the lower plate. The upper plate extends from the inner wall to a radial outside. A single lead wire accommodation space exists on an upper side of the lower plate, a lower side of the upper plate, and a radial outside of the inner wall. The plurality of lead wires are circumferentially disposed along the inner wall in the lead wire accommodation space.

5. 发明授权

US11677280B2 Motor and mounting method 有权
公开(公告)号：US11677280B2
公开(公告)日：2023-06-13
申请号：US17205080
申请日：2021-03-18
申请人： Nidec Corporation
发明人： Shunsuke Takahashi , Takayuki Migita , Takumi Okada
IPC分类号： H02K1/14 , H02K3/52 , H02K3/28 , H02K5/22
CPC分类号： H02K1/145 , H02K3/28 , H02K3/522 , H02K5/225 , H02K2203/09
摘要： A connection terminal includes a lower terminal portion, a bent portion, and an upper terminal portion. The bent portion extends radially inward from an upper end of the lower terminal portion. The upper terminal portion extends axially upward from a radially inner end of the bent portion. The upper terminal portion is located radially inside a radially inner end surface of a tooth. In a process of manufacturing a motor, a rotor main body is inserted into a radially inner side of a stator core, using a space defined radially inside the lower terminal portion.

6. 发明授权

US11355988B2 Stator manufacturing method and motor 有权
公开(公告)号：US11355988B2
公开(公告)日：2022-06-07
申请号：US16479289
申请日：2018-01-06
申请人： Nidec Corporation
发明人： Takashi Shiraishi , Takayuki Migita , Hisashi Fujihara , Masato Aono , Shuhei Nakamatsu
IPC分类号： H02K1/14 , H02K3/52 , B23P19/02 , H02K15/00 , H02K15/02
摘要： A stator includes a stator core disposed about a central axis and covered by an insulator, coils installed on the stator core through the insulator, and an intermediate bus bar electrically connected to a portion of a conducting wire constituting the coils. A method of manufacturing a stator includes a mounting process, a winding process, and a connecting process. An intermediate bus bar is supported at a first position spaced apart from a coil in an axial direction in a mounting portion before the start of the winding process. The intermediate bus bar is fixed at a second position between the first position and the coils in the axial direction after the completion of the winding process.

7. 发明授权

US11251685B2 Rotor core with concave portions between flake portions and base portions with dimensions 有权
公开(公告)号：US11251685B2
公开(公告)日：2022-02-15
申请号：US16474267
申请日：2017-12-26
申请人： Nidec Corporation
发明人： Yasuaki Nakahara , Takeshi Honda , Junichi Uno , Takayuki Migita , Hiroshi Kitagaki , Tsuyoshi Nakamura
IPC分类号： H02K15/03 , H02K1/27 , H02K1/28 , H02K15/12 , H02K21/16
摘要： A method of manufacturing a rotor core, the method including laminating first laminated steel plates in an axial direction. The first laminated steel plates each include a plurality of flake portions arranged in a circumferential direction with gaps between each other and a plurality of protrusions protruding radially outward from an outer side surface of a base portion and each having at least a portion located in the gap between the flake portions. The method further includes fixing the base portions to each other and fixing the flake portions to each other. The method further includes removing the protrusions of the laminated steel plates radially outward.

8. 发明授权

US11139720B2 Drive apparatus 有权
公开(公告)号：US11139720B2
公开(公告)日：2021-10-05
申请号：US16323269
申请日：2017-08-07
申请人： Nidec Corporation
发明人： Yasuo Yamaguchi , Takayuki Migita , Yuki Ishikawa
IPC分类号： H02K9/19 , H02K11/33 , H02K5/20 , H05K7/20
摘要： A drive apparatus includes a motor that includes a motor shaft disposed along a first central axis that extends in one direction a housing that includes a first housing portion housing the motor and that is capable of storing oil, a liquid cooling portion disposed in thermal contact with an inverter electrically coupled to the motor, the liquid cooling portion including a refrigerant liquid flowing therein, and a pipe portion connected to the liquid cooling portion, the refrigerant liquid inside the liquid cooling portion flowing in the pipe portion. The pipe portion passes inside the housing.

9. 发明授权

US11137061B2 Motor unit 有权
公开(公告)号：US11137061B2
公开(公告)日：2021-10-05
申请号：US16323929
申请日：2017-08-08
申请人： Nidec Corporation
发明人： Yuki Ishikawa , Yasuo Yamaguchi , Takayuki Migita
IPC分类号： F16H57/04 , H02K7/116 , H02K9/19 , F16H63/34 , B60K1/00
摘要： A motor unit includes a motor including a rotor, a reduction gear including an intermediate gear to rotate about an intermediate axis, a differential including a ring gear arranged to rotate about a differential axis, a housing, oil in a vertically lower region of a housing space, and an oil passage to feed the oil to the motor. At least a portion of the ring gear is lower than a liquid surface of the oil in the vertically lower region of the housing space. A motor axis, the intermediate axis, and the differential axis to extend in parallel with one another in a horizontal direction. Each of the intermediate axis and the differential axis is lower than the motor axis. A line segment imaginarily joining the motor axis and the intermediate axis, a line segment imaginarily joining the intermediate axis and the differential axis, and a line segment imaginarily joining the motor axis and the differential axis when viewed in an axial direction of the motor axis are defined as first, second, and third line segments, respectively. The first line segment extends substantially along a vertical direction. The second line segment extends substantially along a horizontal direction.

10. 发明授权

US11056938B2 Rotor and motor 有权
公开(公告)号：US11056938B2
公开(公告)日：2021-07-06
申请号：US16325437
申请日：2017-09-29
申请人： Nidec Corporation
发明人： Takayuki Migita , Takeshi Honda , Hirofumi Muto , Osamu Fujimoto , Hiroshi Kitagaki , Yasuaki Nakahara
IPC分类号： H02K1/27 , H02K1/28 , H02K21/14 , H02K15/03 , H02K1/22
摘要： A rotor includes a rotor core in which laminate steel plates extending in a radial direction with respect to a central axis are laminated in an axial direction, and magnets are inserted into the rotor core. Each of the laminate steel plates includes a base portion positioned on a radially outer side of the central axis, and pieces separately disposed on a radially outer side of the base portion with penetrating portions therebetween, and arranged side by side at predetermined intervals in a circumferential direction. The magnets are inserted into the penetrating portions and arranged side by side at predetermined intervals in the circumferential direction. Space portions are provided between the magnets adjacent to each other in the circumferential direction. A circumferential length of the pieces is shorter than a circumferential length of the magnets.

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