公开(公告)号：US20220235765A1

公开(公告)日：2022-07-28

申请号：US17577331

申请日：2022-01-17

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshiyuki KOBAYASHI ,  Tomohiro SAKATA ,  Yuzo NAGAI ,  Hideo NAGAI

IPC: F04C11/00 ,  H02K5/22 ,  H02K11/33

Abstract: An aspect of an electric pump of the present invention is an electric pump attached to a predetermined object. The electric pump includes a motor having a rotor rotatable about a center axis extending in an axial direction, a pump mechanism coupled to the rotor, a circuit board located radially outside the motor and having a plate face directed in a radial direction, an electrolytic capacitor attached to the plate face of the circuit board, and a housing that houses the motor, the pump mechanism, the circuit board, and the electrolytic capacitor therein. The housing has a mounting face attached to a predetermined object. The mounting face is a face directed radially outward. The plate face of the circuit board is disposed along a direction intersecting the mounting face. The electrolytic capacitor is disposed at a position closer to the mounting face than the center axis in the direction orthogonal to the mounting face.

公开(公告)号：US20220416617A1

公开(公告)日：2022-12-29

申请号：US17848402

申请日：2022-06-24

Applicant: NIDEC TOSOK CORPORATION

Inventor： Tomohiro SAKATA ,  Shigehiro KATAOKA

IPC: H02K5/22 ,  H02K11/33 ,  H02K7/14

Abstract: An electric pump includes a motor including a rotor rotatable about an axis extending in an axial direction and a stator with a coil wire, a pump connected to the rotor, a circuit board on a first side in the axial direction of the motor, and a coil guide between the motor and the circuit board. The coil wire extends to the first side in the axial direction and is connected to the circuit board. The coil guide includes a first portion guiding the coil wire along the axial direction, and a second portion which faces the motor and in which the first portion is opened. The second portion is a surface inclined to the first side in the axial direction toward an opening of the first portion. A width of the second portion as viewed from the axial direction decreases toward the opening of the first portion.

公开(公告)号：US20220307496A1

公开(公告)日：2022-09-29

申请号：US17694669

申请日：2022-03-15

Applicant: NIDEC TOSOK CORPORATION

Inventor： Nan WU ,  Tomohiro SAKATA ,  Nguyen Thi Thanh TAM

IPC: F04C2/10

Abstract: An electric pump includes a motor unit rotationally driving a drive shaft, and a pump unit. The pump unit includes a pump rotor that sends the fluid by a driving force of the driving shaft, and a pump housing that surrounds at least one side of the pump rotor. The pump housing includes an attachment surface extending in the axial direction and in contact with an attached body, first and second flow paths respectively on the suction side and the discharge side, and a fixing location within the attachment surface and fixed to the attached body by a fixing member within a maximum outer shape of the motor housing as viewed in the axial direction. Opening locations of the first and second flow paths are displaced from each other in the axial direction on the attachment surface.

公开(公告)号：US20220416618A1

公开(公告)日：2022-12-29

申请号：US17848404

申请日：2022-06-24

Applicant: NIDEC TOSOK CORPORATION

Inventor： Tomohiro SAKATA ,  Shigehiro KATAOKA

IPC: H02K5/22 ,  H02K11/33 ,  H02K7/14

Abstract: An electric pump includes a motor including a rotor rotatable about an axis extending in an axial direction and a stator, a circuit board on a first side in the axial direction of the motor, a pump mechanism connected to the rotor on a second side in the axial direction of the motor, a housing with a housing space for the motor, the pump mechanism, and the circuit board, and a seal member. The stator includes a coil wire extending to the first side and connected to the circuit board. The seal member includes a first surface facing the motor and a second surface facing the circuit board, a first guide penetrating the seal member in the axial direction, a potting material between the coil wire and the first guide, and a second guide which is on the first surface and in which the first guide is opened.