公开(公告)号：US20190214889A1

公开(公告)日：2019-07-11

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

CPC分类号： H02K15/0043 ,  H02K1/22 ,  H02K1/27 ,  H02K1/2773 ,  H02K15/0068 ,  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.

公开(公告)号：US20190207480A1

公开(公告)日：2019-07-04

申请号：US16323640

申请日：2017-08-08

申请人： Nidec Corporation

发明人： Yasuo YAMAGUCHI

IPC分类号： H02K9/193 ,  F16N1/00 ,  F16N13/20 ,  F16N7/40 ,  F04C2/10 ,  F16K17/04 ,  H02K5/20

CPC分类号： F04C2/10 ,  F04C2/102 ,  F04C2/103 ,  F04C13/002 ,  F04C13/005 ,  F04C15/0088 ,  F04C15/0096 ,  F04C15/06 ,  F04C2210/14 ,  F04C2280/02 ,  F16K17/04 ,  F16K17/0406 ,  F16N1/00 ,  F16N7/40 ,  F16N13/20 ,  F16N2210/18 ,  F16N2280/00 ,  H02K1/12 ,  H02K1/22 ,  H02K5/20 ,  H02K7/003 ,  H02K7/14 ,  H02K9/19 ,  H02K9/193 ,  H02K11/225

摘要： A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil and accommodate the rotor and the stator, a pump driven through a motor shaft, and a valve in the housing. The pump includes a pump room in the housing, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port and a branch oil passage that is connected to the first oil passage and is open to an inside of the accommodation portion on an upper side in a vertical direction of the stator. The motor shaft includes a second oil passage located in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft. The valve is provided in the branch oil passage, and switched between a closed state in which a flow of the oil in the branch oil passage is blocked and an open state in which the flow of the oil in the branch oil passage is permitted.

公开(公告)号：US20180358882A1

公开(公告)日：2018-12-13

申请号：US15682601

申请日：2017-08-22

申请人： Shiqiao LIU

发明人： Shiqiao LIU

IPC分类号： H02K99/00 ,  H02K1/22 ,  H02K1/17

CPC分类号： H02K99/20 ,  H02K1/17 ,  H02K1/22 ,  H02K21/28 ,  H02K53/00

摘要： The present invention discloses a novel electric motor, which comprises a stator and a rotor. The stator is a permanent magnet. The rotor comprises a rotor coil and a capacitor. The rotor coil and the capacitor are connected in series to form a resonant driving circuit. The resonant driving circuit is used to convert a natural electromagnetic field into a current to drive the rotor to rotate. The motor of the present invention can rotate without any external power, thereby solving the technical problem that the use of the external power makes a restriction to the further development and application of the motor, and solving the problem of motor energy consumption.

公开(公告)号：US10008914B2

公开(公告)日：2018-06-26

申请号：US15211769

申请日：2016-07-15

申请人： HARSCO TECHNOLOGIES LLC

发明人： Reza Sami ,  Kendall Koon

IPC分类号： H02K33/00 ,  H02K1/12 ,  H02K1/22 ,  H02K11/30 ,  E01B27/20 ,  H02K33/12

CPC分类号： H02K33/00 ,  B06B1/045 ,  E01B27/16 ,  H02K1/12 ,  H02K1/22 ,  H02K11/30 ,  H02K33/12

摘要： A rail maintenance vehicle includes a frame, a workhead, and a vibrating unit. The frame includes wheels that travel along rails. The vibrating unit is coupled to the workhead and includes a rotor, a stator, a first rotor coil coupled to the rotor and a first stator coil coupled to the stator.

公开(公告)号：US20180123415A1

公开(公告)日：2018-05-03

申请号：US15848271

申请日：2017-12-20

申请人： Persimmon Technologies, Corp.

发明人： Martin Hosek ,  Sripati Sah ,  Jayaraman Kirshnasamy

IPC分类号： H02K3/28 ,  H02K1/02 ,  H02K21/16 ,  H02K21/12 ,  B22F3/115 ,  B22F1/02 ,  H02K1/12 ,  H01F1/24 ,  C23C8/02 ,  C23C4/06 ,  C23C8/10 ,  H02K1/22 ,  H01F41/02

CPC分类号： H02K3/28 ,  B22F1/02 ,  B22F3/115 ,  C22C2202/02 ,  C23C4/06 ,  C23C8/02 ,  C23C8/10 ,  H01F1/24 ,  H01F41/0246 ,  H02K1/02 ,  H02K1/12 ,  H02K1/22 ,  H02K21/12 ,  H02K21/16

摘要： A motor comprises a stator comprising at least one core; a coil wound on the at least one core of the stator; a rotor having a rotor pole and being rotatably mounted relative to the stator; and at least one magnet disposed between the rotor and the stator. The at least one core comprises a composite material defined by iron-containing particles having an alumina layer disposed thereon.

公开(公告)号：US20180123408A1

公开(公告)日：2018-05-03

申请号：US15830012

申请日：2017-12-04

申请人： Zhankui XU

发明人： Zhankui XU

IPC分类号： H02K1/17 ,  H02K3/04 ,  H02K1/22 ,  H02K7/00

CPC分类号： H02K1/17 ,  H02K1/22 ,  H02K3/04 ,  H02K7/003 ,  H02K21/04 ,  H02K21/24 ,  H02K21/26 ,  H02K53/00

摘要： The disc-type magnetism-increasing DC generator is a pure magnetic DC generator composed of a drive motor and a DC generator, as well as a disc-brush conductive output device; the DC generator stator is composed of a permanent magnetic source and amagnetism-increasing coil casing; the rotor is composed of a generator disc and a shaft, as well as conductive inner-shaft terminals; the drive motor and the DC generator run on the same shaft; when the motor rotates after it is electrified, the generator disc rotor cuts the magnetic line of force and generates electricity; and a current is generated when an electrical equipment consumes the electricity; when the current passes the magnetism-increasing coil, it generates a magnetic potential, enhancing the magnetic field strength of the DC generator's magnetic source, thereby increasing magnetic flux and output power of the DC generator.

公开(公告)号：US20180115205A1

公开(公告)日：2018-04-26

申请号：US15560813

申请日：2016-03-24

申请人： NITTO DENKO CORPORATION

发明人： Makoto FUJIHARA ,  Kenichi FUJIKAWA ,  Takashi YAMAMOTO ,  Shoichiro SAITO

IPC分类号： H02K1/27 ,  H01F1/057 ,  H01F1/053 ,  B22F3/105 ,  H01F1/08 ,  H02K15/03 ,  H01F7/02 ,  C22C38/00

CPC分类号： H02K1/2766 ,  B22F3/105 ,  C22C38/005 ,  H01F1/0536 ,  H01F1/0577 ,  H01F1/086 ,  H01F7/02 ,  H01F41/0273 ,  H02K1/22 ,  H02K1/27 ,  H02K15/03

摘要： This invention provides for a rare-earth permanent magnet-forming sintered body obtained by integrally sintering magnet material particles containing a rare-earth substance while shaping the magnet material particles, a rare-earth permanent magnet obtained by magnetizing the sintered body, and a rotary machine in which the permanent magnet is embedded.

公开(公告)号：US09923440B2

公开(公告)日：2018-03-20

申请号：US14229673

申请日：2014-03-28

申请人： Louis J. Finkle

发明人： Louis J. Finkle

IPC分类号： H02K16/00 ,  H02K21/46 ,  H02K16/02 ,  H02K17/26 ,  H02K1/27 ,  H02K1/22 ,  H02K1/28

CPC分类号： H02K21/46 ,  H02K1/22 ,  H02K1/223 ,  H02K1/27 ,  H02K1/2706 ,  H02K1/276 ,  H02K1/2786 ,  H02K1/28 ,  H02K7/11 ,  H02K16/02 ,  H02K17/26

摘要： A hybrid induction motor includes a fixed stator, an independently rotating outer rotor, and an inner rotor fixed to a motor shaft. In one embodiment the outer rotor includes spaced apart first bars and permanent magnets, and the inner rotor includes spaced apart second bars. In another embodiment the outer rotor includes angularly spaced apart first bars but no permanent magnets, and the inner rotor includes permanent magnets and may also include angularly spaced apart second bars. The outer rotor is initially accelerated by cooperation of a rotating stator magnetic field with the first bars. As the outer rotor accelerates towards synchronous RPM, the inner rotor is accelerated to transition to efficient synchronous operation. The outer rotor thus acts as a clutch to decouple the inner rotor from the rotating stator magnetic field at startup and to couple the inner rotor to the rotating stator magnetic field at synchronous speed.

公开(公告)号：US09912205B2

公开(公告)日：2018-03-06

申请号：US15531879

申请日：2014-12-03

申请人： NISSAN MOTOR CO., LTD.

发明人： Takuma Kinoto ,  Tatsuya Imai ,  Masahide Kimura ,  Hideo Sakuyama ,  Koichi Murata ,  Makoto Abe

IPC分类号： H02K1/06 ,  H02K1/28 ,  H02K1/27

CPC分类号： H02K1/28 ,  H02K1/22 ,  H02K1/274

摘要： A rotor structure for a rotary electric machine in which an inner surface of a hollow rotor core and an outer surface of a shaft inserted into a hole of the rotor core are fitted together by mutual engagement between a projection and a recess to compose a rotor, the rotor structure including: a first retainer brought into contact with one end of the rotor core; and a second retainer brought into contact with a surface of the first retainer opposite to a surface in contact with the rotor core so as to fix the first retainer and the rotor core to the shaft, wherein a coefficient of static friction of a first sliding surface between the first retainer and the second retainer is smaller than any other sliding surface provided in the rotor.

公开(公告)号：US09893573B2

公开(公告)日：2018-02-13

申请号：US15057534

申请日：2016-03-01

申请人： FANUC CORPORATION

发明人： Koudai Akashi ,  Hidetoshi Uematsu

IPC分类号： H02K1/22 ,  H02K1/27 ,  H02K1/30 ,  H02K7/00

CPC分类号： H02K1/22 ,  H02K1/2773 ,  H02K1/30 ,  H02K7/003

摘要： A rotor able to enhance the strength in the radial direction of the rotor member. A rotor includes a shaft and a tubular rotor member which is fixed to the outside of the shaft in the radial direction. The shaft has a first part which contacts an inner circumferential surface of the rotor member, a second part which is arranged separated from the first part in the axial direction and which contacts an inner circumferential surface of the rotor member, a third part which extends between the first part and the second part and which has an outer diameter smaller than the first part and the second part, and a projection which extends from the third part to the outside in the radial direction and which contacts the inner circumferential surface of the rotor member.