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：US20200003210A1

公开(公告)日：2020-01-02

申请号：US16489711

申请日：2018-03-12

Applicant: Nidec Tosok Corporation

Inventor： Yoshiyuki KOBAYASHI ,  Koji HIGUCHI ,  Shigehiro KATAOKA

IPC: F04C14/24 ,  F04C15/06

Abstract: An oil pump includes a motor including a shaft disposed along a center axis, a rotor rotating around the shaft, a stator disposed to face the rotor, a housing accommodating the rotor and the stator, and a pump. The pump includes a pump rotor rotating together with the shaft, and a pump housing including an accommodating portion that accommodates the pump rotor. The pump housing includes a suction port that suctions in oil, a discharge port that discharges oil, and a pressure sensor that detects hydraulic pressure of oil in a partial flow passage allowing communication between the discharge port and the accommodating portion. The pressure sensor is disposed outside the housing of the motor, and the housing includes a wall that blocks electromagnetic waves.

公开(公告)号：US20200003209A1

公开(公告)日：2020-01-02

申请号：US16489710

申请日：2018-03-12

Applicant: Nidec Tosok Corporation

Inventor： Takamitsu ETO ,  Yoshiyuki KOBAYASHI ,  Koji HIGUCHI ,  Shigehiro KATAOKA

IPC: F04C14/24 ,  F04C15/06

Abstract: An oil pump includes a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, a housing that accommodates the rotor and the stator, a pump including a pump rotor rotatable together with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor. The pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor disposed between the discharge port and the accommodation portion.

公开(公告)号：US20200309156A1

公开(公告)日：2020-10-01

申请号：US16813758

申请日：2020-03-10

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hitoshi SAKAMOTO ,  Koji HIGUCHI ,  Kunihiro KAJITA ,  Tomokazu IKEDA

IPC: F04D29/66 ,  H02K1/16 ,  H02K1/22 ,  H02K5/04 ,  H02K7/00 ,  H02K5/24 ,  F04D13/06 ,  F04D29/40

Abstract: An electric pump device includes a motor having a rotor and a stator portions, a pump portion and a housing. The stator portion has a stator core, and coils each having a winding portion and a crossover portion. The housing has a housing body portion having a tubular shape and extending in the axial direction, and a flange portion expanding radially outward from the outer peripheral surface of the housing body portion. The flange portion has an end surface that faces toward one side in the axial direction and is disposed in the axial direction between a first and a second virtual plane. The first and the second virtual planes pass through parts of the stator core, the winding portion, and the crossover portion located respectively closest to one and the other sides in the axial direction and expanding in a direction perpendicular to a central axis.

公开(公告)号：US20200309130A1

公开(公告)日：2020-10-01

申请号：US16822041

申请日：2020-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hitoshi SAKAMOTO ,  Koji HIGUCHI ,  Kunihiro KAJITA ,  Tomokazu IKEDA

IPC: F04C23/02 ,  F04C18/08

Abstract: Provided is an electric pump device which includes a motor having a shaft extending along a first central axis, a pump portion driven by the motor, and a housing for housing the motor and the pump portion. The housing includes: a housing body portion which has a bottomed tube shape and extends in an axial direction, a flange portion which expands radially outward from an outer peripheral surface of the housing body portion, and a projection portion extending from a bottom portion of the housing body portion toward one axial side. A second central axis of the projection portion is arranged at a position shifted in a radial direction from the first central axis. The flange portion has convex portions projected from the end surface facing the one axial side of the flange portion toward the one axial side.