公开(公告)号：US20200153368A1

公开(公告)日：2020-05-14

申请号：US16676406

申请日：2019-11-06

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshiyuki KOBAYASHI ,  Kazuhiro HOMMA ,  Koji HIGUCHI ,  Yutaka HASHIMOTO

IPC: H02P6/16 ,  F04D13/06 ,  H02K7/00 ,  F01M11/00 ,  H02K5/22

Abstract: Provided is an electric oil pump that does not degrade assembly operability and does not require a complicated configuration. The electric oil pump includes a motor portion that has a motor shaft disposed along a center axis extending in an axial direction; a pump portion that is disposed on one side of the motor portion in the axial direction, is driven by the motor portion via the motor shaft, and suctions and ejects an oil, and an inverter portion that is disposed on one side of the pump portion in the axial direction and drives the motor portion, the motor shaft penetrates through the pump portion, and the electric oil pump further includes a rotation angle sensor that is disposed at the inverter portion and detects a rotation angle of the motor shaft.

公开(公告)号：US20190383291A1

公开(公告)日：2019-12-19

申请号：US16484970

申请日：2018-02-23

Applicant: Nidec Tosok Corporation

Inventor： Yoshiyuki KOBAYASHI ,  Kazuhiro HOMMA ,  Koji HIGUCHI ,  Yosuke ITO

IPC: F04C29/04

Abstract: A pump apparatus includes a motor including a shaft rotatable around a central axis, and a pump that is positioned on one side in an axial direction thereof, is driven via the shaft, and discharges an oil. The motor includes a rotor, a stator, a housing accommodating the rotor and the stator, a wall partitioning the stator and the rotor, and a motor side discharge port to discharge an oil. The pump includes a pump rotor, a pump case accommodating the pump rotor, a pump side suction port to suction an oil, and a pump side delivery port to deliver an oil to the inside of the motor. A pump apparatus includes a first flow channel to cause an oil to flow into the pump through a pump side suction port, a second flow channel to cause an oil to flow to a stator region through the pump side delivery port, and a third flow channel to cause an oil to flow into the stator.

公开(公告)号：US20190234406A1

公开(公告)日：2019-08-01

申请号：US16334778

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Kazuhiro HOMMA ,  Yosuke ITO

IPC: F04C15/00 ,  F04C2/10 ,  H02K1/04 ,  H02K1/20 ,  H02K1/32 ,  H02K5/167 ,  H02K5/20 ,  H02K7/08 ,  H02K9/193 ,  H02K16/02

CPC classification number: F04C15/0096 ,  F04C2/10 ,  F04C15/00 ,  F04C15/06 ,  F04C2240/40 ,  H02K1/04 ,  H02K1/20 ,  H02K1/32 ,  H02K5/1675 ,  H02K5/20 ,  H02K7/085 ,  H02K7/14 ,  H02K9/193 ,  H02K16/02 ,  H02K21/14

Abstract: A pump device includes a shaft, a motor to rotate the shaft, and a pump driven by the motor via the shaft to discharge oil. The pump device includes a first flow path for oil to connect an interior of the pump and an interior of a housing, a second flow path for oil provided between a stator and a rotor included in the motor, a third flow path for oil disposed outside in a radial direction or inside in the radial direction of the stator and the rotor, and a fourth flow path to cause oil from the second flow path or the third flow path to flow into the pump.

公开(公告)号：US20200018309A1

公开(公告)日：2020-01-16

申请号：US16484580

申请日：2018-02-23

Applicant: Nidec Tosok Corporation

Inventor： Yoshiyuki KOBAYASHI ,  Kazuhiro HOMMA ,  Koji HIGUCHI ,  Yosuke ITO

IPC: F04C15/06 ,  F04C2/10

Abstract: A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

公开(公告)号：US20190036409A1

公开(公告)日：2019-01-31

申请号：US16048378

申请日：2018-07-30

Applicant: NIDEC TOSOK CORPORATION ,  NIDEC CORPORATION

Inventor： Shigehiro KATAOKA ,  Kazuhiro HOMMA ,  Yoshiyuki KOBAYASHI ,  Hideaki UCHISE ,  Masato AONO ,  Akihiro OKITA

IPC: H02K3/50 ,  H02K5/22 ,  H02K7/14 ,  H02K21/14 ,  F04C15/00

Abstract: A motor includes a rotor having a shaft centered on a central axis that extends in an axial direction, a stator which is disposed to face the rotor and includes a plurality of coils, a housing in which the rotor and the stator are housed, and a bus bar assembly that is disposed on one side of the shaft in the axial direction, wherein the bus bar assembly includes a plurality of bus bars that are electrically connected to the plurality of coils of the stator and a bus bar holder that holds the plurality of bus bars, and wherein at least one bus bar among the plurality of bus bars is placed on a disposition surface part provided on the bus bar holder and extends in a direction crossing the central axis.

公开(公告)号：US20210277894A1

公开(公告)日：2021-09-09

申请号：US16334385

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Kazuhiro HOMMA ,  Yosuke ITO

IPC: F04C15/06 ,  F04C2/10 ,  H02K9/19 ,  H02K16/02

Abstract: A pump device includes a shaft , a motor unit that rotates the shaft, and a pump driven by the motor via the shaft and discharges oil. The pump device includes a first flow path for the oil that connects the inside of the pump and the inside of a housing, a second flow path for the oil provided between a stator and a rotor, and a third flow path for the oil that is connected to a suction port of a pump through the outside of the stator and the rotor in a radial direction from the second flow path. One or a plurality of grooves are provided on the outer peripheral surface of the rotor or the inner peripheral surface of the stator, and the groove is inclined with respect to an oil flow direction.

公开(公告)号：US20190234405A1

公开(公告)日：2019-08-01

申请号：US16334775

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Kazuhiro HOMMA ,  Yosuke ITO

IPC: F04C15/00 ,  F04C2/10 ,  H02K1/04 ,  H02K1/20 ,  H02K1/32 ,  H02K5/167 ,  H02K5/20 ,  H02K7/08 ,  H02K9/193 ,  H02K16/02

CPC classification number: F04C15/0096 ,  F04C2/10 ,  F04C15/00 ,  F04C2240/40 ,  H02K1/04 ,  H02K1/20 ,  H02K1/32 ,  H02K5/1675 ,  H02K5/20 ,  H02K7/085 ,  H02K7/14 ,  H02K9/19 ,  H02K9/193 ,  H02K16/02

Abstract: A pump device includes a shaft, a motor that rotates the shaft, and a pump driven by the motor through the shaft to discharge oil. The pump device includes a first passage that sucks oil from an intake opening of the motor, a second passage which is provided between a stator and a rotor, and a third passage connected from the second passage to a negative pressure region inside the pump, and the pump discharges oil flowing from the third passage to the pump from the discharge opening.

公开(公告)号：US20190234404A1

公开(公告)日：2019-08-01

申请号：US16334779

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Kazuhiro HOMMA ,  Yosuke ITO

IPC: F04C15/00 ,  F04C2/10

CPC classification number: F04C15/0088 ,  F04C2/10 ,  F04C15/00 ,  F04C2240/50 ,  H02K7/14 ,  H02K9/19

Abstract: A pump device includes a shaft, a motor that rotates the shaft, and a pump that is driven by the motor via the shaft and discharges oil. The pump device includes a first flow path for the oil that connects an interior of the pump and an interior of a housing, a second flow path for the oil provided between a stator and a rotor of the motor, and a third flow path for the oil that is connected to a suction port of a pump through an outside of the stator and the rotor in a radial direction from the second flow path. In the first flow path, oil passes through at least one of a space between the shaft and a bearing, a space between the bearing and a pump case, and an interior of the bearing.