-
公开(公告)号：US20230261542A1
公开(公告)日：2023-08-17
申请号：US18119616
申请日：2023-03-09
Applicant: Nidec Corporation
Inventor： Yasuo YAMAGUCHI , Yuki ISHIKAWA
CPC classification number: H02K7/116 , H02K9/19 , H02K5/04 , F16H57/0421 , F16N31/00
Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis, and a stator radially outside of the rotor, a reduction gear connected to the motor, a differential connected to the motor through the reduction gear, a housing including a housing space to house the motor, the reduction gear, and the differential, and an oil passage to lead an oil to the motor. The oil passage includes an electric pump and a cooler. The electric pump and the cooler are fixed to the housing. The electric pump includes a portion located vertically below the cooler.
-
公开(公告)号：US20230137134A1
公开(公告)日：2023-05-04
申请号：US17969690
申请日：2022-10-20
Applicant: NIDEC CORPORATION
Inventor： Keisuke NAKATA , Yuki ISHIKAWA , Sota DOI , Kouhei OBA
Abstract: A rotating electrical machine includes a rotor, a stator, a housing, a bearing, an electricity removal device in electrical contact with a shaft and the housing, a nozzle supplying a fluid into the shaft, and a cover covering a part of the device. The shaft includes a hollow first member, a hollow second member coupled to a first side of the first member, and a channel communicating the inside and outside of the shaft. A part of the nozzle is inserted into the second member from an opening end. The housing has a peripheral wall surrounding the opening end. The bearing is held in the peripheral wall and is positioned away on the second side of the device. The cover is axially between the bearing and the device. The channel is opened in a portion positioned on the second side relative to the cover inside the peripheral wall.
-
公开(公告)号：US20230090548A1
公开(公告)日：2023-03-23
申请号：US17939963
申请日：2022-09-08
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Shuhei NAKAMATSU , Hitoshi KUROYANAGI
Abstract: A drive apparatus includes an inverter accommodated in an inverter housing, a cooling flow path through which a first fluid for cooling the inverter can flow, and a heat exchanger configured to allow a second fluid for cooling a motor to exchange heat with the first fluid. The inverter includes a first element and a second element arranged side by side in a second direction perpendicular to the first direction. The cooling flow path includes a first cooling portion that cools the first element with the first fluid, a second cooling portion that cools the second element with the first fluid, a first connection flow path that connects the first cooling portion and the second cooling portion, and a second connection flow path that connects the second cooling portion and the heat exchanger.
-
公开(公告)号：US20230072550A1
公开(公告)日：2023-03-09
申请号：US17983397
申请日：2022-11-09
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Takanobu OYAMA , Keisuke FUKUNAGA
Abstract: The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.
-
公开(公告)号：US20220305892A1
公开(公告)日：2022-09-29
申请号：US17694690
申请日：2022-03-15
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Hitoshi KUROYANAGI
Abstract: In a drive device, a housing includes a motor accommodation portion for accommodating a motor and an inverter accommodation portion for accommodating an inverter unit, the motor accommodation portion includes a tubular portion of a tubular shape extending in a first direction, the inverter accommodation portion includes a peripheral wall portion surrounding the inverter accommodation portion when viewed from a second direction and a plate portion extending from the tubular portion along one side in a direction perpendicular to the first direction and intersecting the second direction and continuous with the peripheral wall portion, and at least one of the pump and the oil cooler is fixed to the plate portion.
-
Patent Agency Ranking
公开(公告)号：US20220282784A1
公开(公告)日：2022-09-08
申请号：US17685381
申请日：2022-03-03
Applicant: NIDEC CORPORATION
Inventor： Keisuke NAKATA , Yuki ISHIKAWA , Sota DOI
Abstract: A transmission mechanism device of an aspect of the present invention includes a motor, a transmission mechanism including a plurality of gears, a first shaft and a bearing supporting the first shaft and transmitting power of the motor, a housing that accommodates the transmission mechanism and holds the bearing on an inner face, oil that collects in a lower region inside the housing, a catch tank that is disposed inside the housing and opens upward, an oil passage through which the oil passes, and an oil pump provided in the oil passage. The oil passage has a first path connecting the oil pump and the catch tank and a scooping path for scooping the oil by rotation of the gear to guide the scooped oil to the catch tank. The catch tank includes a feed portion for supplying the oil to the gear or the bearing.
-
公开(公告)号：US20220209626A1
公开(公告)日：2022-06-30
申请号：US17697867
申请日：2022-03-17
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Takayuki MIGITA , Shuhei NAKAMATSU
Abstract: One aspect of a motor of the present disclosure may include a rotor having a motor shaft disposed along a central axis extending in one direction, a stator facing the rotor via a gap in a radial direction, and a housing having an accommodating portion configured to accommodate the rotor and the stator, and to enable oil to be stored therein, wherein the housing comprises a lower wall portion facing a vertical-directional lower region in the inside of the accommodating portion, the lower wall portion comprises a cooling flow passage formed therein, and refrigerant flows in the cooling flow passage, and at least a portion of the cooling flow passage overlaps the vertical-directional lower region in the inside of the accommodating portion when viewed along a vertical direction.
-
公开(公告)号：US20220158522A1
公开(公告)日：2022-05-19
申请号：US17516118
申请日：2021-11-01
Applicant: Nidec Corporation
Inventor： Yuki ISHIKAWA
Abstract: An inner rotor motor includes a rotor rotatable about a central axis, a stator that includes a stator core that surrounds the rotor from radially outside, and a motor housing that holds the stator. The motor housing includes a tubular portion and a bottom wall. The bottom wall includes a through hole. An inner circumferential surface of the tubular portion includes a first portion that is located at a circumferential position that coincides with the through hole and includes a surface that can come into contact with an outer circumferential surface of the stator core, and a second portion that is located between the first portion and the bottom wall and includes a surface located radially outside relative to the first portion.
-
公开(公告)号：US20220060078A1
公开(公告)日：2022-02-24
申请号：US17400114
申请日：2021-08-12
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Masami SUGINO
Abstract: In a motor, a motor housing includes a motor housing main body having a cylindrical portion and a lid portion holding a first bearing, a cover holding a second bearing, a stator housing forming a radial flow path, first and second seal members, and a positioning portion for radially positioning the motor housing main body and the cover. The stator housing includes a stator housing main body and a flange portion positioned between the motor housing main body and the cover in the axial direction. The first seal member seals a gap in the radial direction between the cylindrical portion and the stator housing main body. The second seal member seals a gap in the axial direction between the motor housing main body and the flange portion. The positioning portion positions the stator housing in the radial direction with respect to the motor housing main body and the cover.
-
公开(公告)号：US20210288550A1
公开(公告)日：2021-09-16
申请号：US16323934
申请日：2017-08-07
Applicant: Nidec Corporation
Inventor： Yuki ISHIKAWA , Yasuo YAMAGUCHI , Takayuki MIGITA
Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis, a reduction gear including an intermediate gear to rotate about an intermediate axis and connected to the motor, a differential including a ring gear to rotate about a differential axis and connected to the reduction gear, a housing including a housing space to house the motor, the reduction gear, and the differential, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space to be fed to the motor. The housing includes a ceiling portion directly above the reduction gear and the differential. At least a portion of the ring gear is lower than a liquid surface of the oil in the vertically lower region of the housing space. The motor axis, the intermediate axis, and the differential axis extend in parallel with one another along a horizontal direction. Each of the intermediate axis and the differential axis is lower than the motor axis. The ceiling portion is substantially parallel to an imaginary line imaginarily joining the motor axis and the differential axis when viewed in an axial direction of the motor axis.
-
-
-
-
-
-
-
-
-
Search Results
57
records
(took 0.02 seconds)
