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    PUMP DEVICE
    1.
    发明申请
    PUMP DEVICE 有权

    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.

    PUMP DEVICE
    3.
    发明申请
    PUMP DEVICE 审中-公开

    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.

    ROTATION ANGLE DETECTING DEVICE AND ELECTRIC ACTUATOR
    4.
    发明申请
    ROTATION ANGLE DETECTING DEVICE AND ELECTRIC ACTUATOR 有权

    公开(公告)号：US20210396551A1

    公开(公告)日：2021-12-23

    申请号：US17348789

    申请日：2021-06-16

    Applicant: NIDEC TOSOK CORPORATION

    Inventor： Yosuke ITO ,  Toshiaki NAKAMURA

    IPC: G01D5/14 ,  H02K11/215 ,  G01B7/30

    Abstract: An aspect of the disclosure provides a rotation angle detecting device capable of detecting a rotation angle of a rotation body rotatable about a central axis. The rotation angle detecting device includes: a sensor magnet, having multiple magnetic poles provided side-by side in a circumferential direction about the central axis and installed to the rotation body; a magnetic sensor, overlapped with the sensor magnet when viewed in a predetermined first direction and capable of detecting a magnetic field of the sensor magnet; and a pair of magnetic parts, provided to sandwich the magnetic sensor in a second direction intersecting the first direction.

    PUMP APPARATUS
    5.
    发明申请
    PUMP APPARATUS 审中-公开

    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.

    PUMP APPARATUS
    6.
    发明申请
    PUMP APPARATUS 审中-公开

    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.

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