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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
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.
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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
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.
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公开(公告)号：US20190271309A1
公开(公告)日：2019-09-05
申请号：US16320555
申请日：2017-07-24
Applicant: Nidec Tosok Corporation
Inventor： Yoshiyuki KOBAYASHI , Shigehiro KATAOKA
Abstract: An electric pump includes a motor, a pump, an electric pump case, a pressure sensor device to measure a pressure of fluid, and a circuit board. The pump includes a pump gear to rotate along with rotation of a shaft, and a pump body including a pump chamber recessed from a surface and housing the pump gear, and a through-hole with openings at two ends in an axial direction, one of the openings being opened to the pump chamber. The pressure sensor device includes a pressure sensor device body between the pump and the motor, and an electrical connection cable electrically connecting the pressure sensor device body and the circuit board. The electrical connection cable is routed from the pressure sensor device body to the circuit board inside of the electric pump case.
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公开(公告)号：US20190271307A1
公开(公告)日：2019-09-05
申请号：US16320125
申请日：2017-07-25
Applicant: NIPPON SEIKI CO., LTD. , Nidec Tosok Corporation
Inventor： Yoshihiro KAMIMURA , Yoshiyuki KOBAYASHI , Shigehiro KATAOKA
Abstract: A pressure sensor device for an electrically powered pump includes a pressure sensor that measures a pressure of a fluid inside the electrically powered pump, first and second terminals that project from the pressure sensor in a first direction extending toward one side in the horizontal direction, a third terminal that projects from the pressure sensor in a second direction extending toward another side in the horizontal direction, a fourth terminal that projects from the pressure sensor in the second direction and that is electrically connected to the second terminal; a first capacitor that is located on one side, in the horizontal direction, of the pressure sensor and that is connected between the first terminal and the second terminal, and a second capacitor that is located on another side, in the horizontal direction, of the pressure sensor and that is connected between the third terminal and the fourth terminal.
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公开(公告)号：US20190195349A1
公开(公告)日：2019-06-27
申请号：US16218501
申请日：2018-12-13
Applicant: NIDEC TOSOK CORPORATION
Inventor： Shigehiro KATAOKA , Yoshiyuki KOBAYASHI
CPC classification number: F16H61/0031 , B60W10/30 , F01M1/02 , F01M2001/0215 , F01M2001/0253 , F01M2001/0284 , F01M2001/0292
Abstract: An electric oil pump includes a motor part having a shaft; a pump part that is driven by the motor part via the shaft and discharges oil; and a control part configured to control an operation of the motor part. The motor part includes a rotor, a stator, and a motor housing in which the rotor and the stator are accommodated. The pump part includes a pump rotor attached to the shaft and a pump housing having a housing part in which the pump rotor is accommodated. The control part includes an electronic component and a board having a surface on which the electronic component is mounted. The board is disposed outside the stator in a radial direction and within a range of the motor part in the axial direction, and the surface of the board is disposed to face the stator and extends in the axial direction.
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Patent Agency Ranking
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
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.
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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
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.
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公开(公告)号：US20220320974A1
公开(公告)日：2022-10-06
申请号：US17706623
申请日：2022-03-29
Applicant: NIDEC TOSOK CORPORATION
Inventor： Yuzo NAGAI , Shigehiro KATAOKA , Yoshiyuki KOBAYASHI
Abstract: An electric pump includes: a motor including a shaft; a pump mechanism coupled to an axial one side of the shaft; a circuit substrate located outward in a radial direction orthogonal to the axial direction of the shaft, and a housing capable of accommodating the motor and the circuit substrate. The circuit substrate includes a plate surface facing the shaft and following the axial direction. The housing includes a motor housing part, a substrate housing part, a pump housing part, and an attachment plate part located outward in a radial direction. The attachment plate part includes an attachment surface facing the shaft and following the axial direction. The motor and the pump mechanism are located on an inner angle side of an angle at which a third surface including the plate surface and a fourth surface including the attachment surface intersect.
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公开(公告)号：US20200313505A1
公开(公告)日：2020-10-01
申请号：US16830223
申请日：2020-03-25
Applicant: NIDEC TOSOK CORPORATION
Inventor： Yoshiyuki KOBAYASHI , Shigehiro KATAOKA
Abstract: An electric oil pump includes a pump part; a motor driving the pump part and having a rotor, a stator, and a motor shaft; a housing housing the motor; a control board including a drive circuit controlling driving of the motor; and a sensor board equipped with a rotation sensor detecting a rotation angle of the rotor of the motor. The motor shaft has one axial side connected to the pump part. The control board includes a sensor connection part performing electrical connection with the sensor board. The control board is arranged on a radially outer side with respect to the motor in a position of extending in an axial direction. The sensor board is arranged on the other axial side with respect to the motor shaft, and is arranged in a direction intersecting the axial direction.
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公开(公告)号：US20200232477A1
公开(公告)日：2020-07-23
申请号：US16633602
申请日：2018-08-16
Applicant: Nidec Tosok Corporation
Inventor： Shigehiro KATAOKA , Yoshiyuki KOBAYASHI
Abstract: An electric oil pump includes a motor including a shaft, a pump driven with the shaft therebetween, and an inverter fixed to a rear side of the motor. The motor includes a motor housing. The inverter includes an inverter housing including a circuit board accommodation portion. The inverter housing includes bus bars that connect coil ends inside the circuit board accommodation portion and extending from the motor and a circuit board to each other. The motor housing includes a bottomed cylindrical shape including a bottom portion on the inverter side. The inverter housing includes a fixed portion that is fixed to the bottom portion. The fixed portion is fixed to the bottom portion using fixing members, and the fixing members are disposed within a region surrounded by bus bars.
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