公开(公告)号：US11920591B2

公开(公告)日：2024-03-05

申请号：US17290305

申请日：2019-09-20

申请人： NIDEC TOSOK CORPORATION ,  KYB CORPORATION

发明人： Koji Higuchi ,  Yutaka Hashimoto ,  Yoshiyuki Maki ,  Kohei Kubo

IPC分类号： F04C2/10 ,  F04C11/00 ,  F04C13/00 ,  F04C15/06

CPC分类号： F04C2/102 ,  F04C11/008 ,  F04C13/002 ,  F04C15/06 ,  F04C2210/206 ,  F04C2240/40

摘要： An electric oil pump includes a motor including a motor shaft, a pump assembly including a vane pump driven by the motor to suction and discharge oil, and an inverter to drive the motor. The motor includes a rotor, a stator on a side outward from the rotor in a radial direction, and a motor housing containing the rotor and the stator. The motor housing includes a suction port through which the vane pump suctions oil from outside, and a discharge port through which the vane pump discharges oil to outside. The motor housing includes flat surface portions in a portion of an outer periphery thereof. The suction port and the discharge port are located in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction.

公开(公告)号：US11536268B2

公开(公告)日：2022-12-27

申请号：US17268926

申请日：2019-10-29

申请人： KYB Corporation ,  NIDEC TOSOK CORPORATION

发明人： Kohei Kubo ,  Tomoyuki Fujita ,  Koichiro Akatsuka ,  Yoshiyuki Maki ,  Koji Higuchi ,  Yutaka Hashimoto

IPC分类号： F04C15/00 ,  F04D13/06 ,  F04D29/043 ,  F04D29/053 ,  F04D27/00 ,  F04D27/02 ,  F04C15/06 ,  F04C2/344 ,  F04C28/28

摘要： An electric pump provided with a pump unit configured to discharge working oil by being rotationally driven by an electric motor includes: a drive shaft configured to transmit rotational driving force from the electric motor to a rotor of the pump unit; a rotation-detection shaft provided coaxially with the drive shaft, the rotation-detection shaft being configured to be rotated together with the rotor; and a rotation detector unit configured to detect rotation of the rotation-detection shaft. The rotation-detection shaft has: an engagement portion configured to engage with the rotor; and a detection-target portion facing the rotation detector unit, and an outer diameter of the detection-target portion is set so as to be larger than an outer diameter of the engagement portion.