-
公开(公告)号：US20240328502A1
公开(公告)日：2024-10-03
申请号：US18621100
申请日：2024-03-29
Applicant: NIDEC CORPORATION
Inventor： Taishi SATODA , Ryosuke MATSUZAKI , Yuki ISHIKAWA , Yuta KURODA
CPC classification number: F16H57/0424 , F16H57/021 , F16H57/0471 , H02K5/161 , H02K5/203 , H02K7/083 , H02K7/116 , H02K9/19 , F16H2057/02034 , F16H2057/02043 , F16H57/0476
Abstract: A drive device includes a transmission in a housing, and a flow path. The transmission includes a shaft and a bearing supporting the shaft. The housing has a bearing holding portion that includes a facing surface on a first side in an axial direction with respect to an end on the first side of the shaft and orthogonal to the axial direction, and an inner surface extending from the facing surface to the other, second side in the axial direction and supporting the bearing. The flow path includes an inflow portion and an outflow portion below the inflow portion, both open to the inner surface. The facing surface has a rib protruding to the second side and orthogonal to the axial direction. At least a part of the rib is below the inflow portion, and at least a part of the rib covers the outflow portion from above.
-
公开(公告)号：US20230139181A1
公开(公告)日：2023-05-04
申请号：US17974524
申请日：2022-10-27
Applicant: NIDEC CORPORATION
Inventor： Keisuke NAKATA , Yuki ISHIKAWA , Sota DOI , Kouhei OBA
Abstract: A drive apparatus includes a motor, a housing having a motor accommodating portion, and a flow path for a fluid. The housing includes first and second side walls opposite along an axial direction of the motor and extending along a plane orthogonal to the motor axis, and a peripheral wall surrounding the motor. The flow path includes a first intra-side wall path provided in the first side wall, a first intra-housing path connected to the first intra-side wall path and extending inside the motor accommodating portion along the axial direction, a second intra-side wall path connected to the first intra-housing path and provided in the second side wall, and a second intra-housing path connected to the second intra-side wall path and extending inside the motor accommodating portion along the axial direction. The first and second intra-housing paths are provided with feed holes for feeding fluid to the motor.
-
公开(公告)号：US20220311301A1
公开(公告)日：2022-09-29
申请号：US17696862
申请日：2022-03-17
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Hironobu KUMAGAI
Abstract: A motor includes a rotor, a stator, and first and second bus bar disposed on one side in an axial direction of the stator. The stator includes a winding portion including conductor connection bodies in which conductors are connected in series and a stator core having slots through which the conductor connection body passes. The winding portion includes a coil end located on one side in the axial direction of the stator core. The conductor connection body includes first and second ends located at an outermost circumference in the radial direction of the coil end. The first bus bar is connected to the first end. The second bus bar is connected to the second end. The first bus bar is located on one side in the axial direction of the coil end. The second bus bar is located on the radial outside of the coil end.
-
公开(公告)号：US20220281310A1
公开(公告)日：2022-09-08
申请号：US17685384
申请日：2022-03-03
Applicant: NIDEC CORPORATION
Inventor： Keisuke NAKATA , Yuki ISHIKAWA
Abstract: A housing of a drive device includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path, and a connection flow path. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to the motor portion flows in the second flow path. The first flow path and the second flow path are connected to the connection flow path. At least a part of the connection flow path is disposed in the motor accommodation space for accommodating the motor portion.
-
公开(公告)号：US20210083548A1
公开(公告)日：2021-03-18
申请号：US17086513
申请日：2020-11-02
Applicant: Nidec Corporation
Inventor： Yasuo YAMAGUCHI , Takayuki MIGITA , Yuki ISHIKAWA
Abstract: A motor assembly includes a motor, a housing including a housing space to house the motor, 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 through the motor to the vertically lower region of the housing space. The oil passage includes a first oil passage extending through an inside of the motor, and a second oil passage extending through an outside of the motor. One of the first oil passage and the second oil passage includes a cooler to cool the oil therein.
-
Patent Agency Ranking
公开(公告)号：US20190219052A1
公开(公告)日：2019-07-18
申请号：US16323633
申请日：2017-08-07
Applicant: Nidec Corporation
Inventor： Yasuo YAMAGUCHI , Yuki ISHIKAWA
IPC: F04C2/10 , H02K11/225 , H02K7/14 , H02K9/19 , F04C15/00
CPC classification number: H02K9/193 , F04C2/10 , F04C2/102 , F04C2/103 , F04C13/002 , F04C13/005 , F04C15/0088 , F04C15/0096 , F04C15/06 , F04C2210/14 , F04C2280/02 , F16K17/04 , F16K17/0406 , F16N1/00 , F16N7/40 , F16N13/20 , F16N2210/18 , F16N2280/00 , H02K1/12 , H02K1/22 , H02K5/20 , H02K7/003 , H02K7/14 , H02K9/19 , H02K11/225
Abstract: In a drive apparatus, a pump includes an external gear fixed to an end portion of a motor shaft on a first axial side, an internal gear surrounding the external gear on a radially outer side thereof to mesh with the external gear, a pump chamber to house the internal gear and the external gear, a suction inlet to suck an oil into the pump chamber, and a discharge outlet to discharge the oil from inside the pump chamber. The housing includes an outer cover to cover the motor shaft on the first axial side and having the pump chamber defined therein, and a first oil passage defined in the outer cover and connected to the discharge outlet. The motor shaft includes a second oil passage in an interior of the motor shaft and connected to the first oil passage, and a first through hole to connect the second oil passage to an outer circumferential surface of the motor shaft. The first oil passage is located on the first axial side of the pump chamber. The second oil passage opens into the first oil passage at the end portion of the motor shaft on the first axial side.
-
公开(公告)号：US20190181724A1
公开(公告)日：2019-06-13
申请号：US16323906
申请日：2017-08-01
Applicant: Nidec Corporation
Inventor： Shuhei NAKAMATSU , Yuki ISHIKAWA , Takayuki MIGITA
Abstract: A motor includes a rotor to rotate about a motor axis, and a stator radially outside of the rotor. The rotor includes a shaft extending along the motor axis, a rotor core surrounding the shaft from radially outside, a plate-shaped end plate at an axial end portion of the rotor core, and a cover portion at the axial end portion of the rotor core with the end plate intervening between the cover portion and the rotor core. The end plate includes a plate through hole extending in an axial direction, a first recessed portion extending radially inward from the plate through hole, and a second recessed portion extending radially outward from the plate through hole. The first recessed portion opens radially inward in the end plate. The first recessed portion includes an axially-facing opening covered with the rotor core. The second recessed portion includes an axially-facing opening including a covered portion covered with the cover portion, and an open portion not covered with the cover portion.
-
公开(公告)号：US20190178365A1
公开(公告)日：2019-06-13
申请号：US16323929
申请日：2017-08-08
Applicant: Nidec Corporation
Inventor： Yuki ISHIKAWA , Yasuo YAMAGUCHI , Takayuki MIGITA
Abstract: A motor unit includes a motor including a rotor, a reduction gear including an intermediate gear to rotate about an intermediate axis, a differential including a ring gear arranged to rotate about a differential axis, a housing, oil in a vertically lower region of a housing space, and an oil passage to feed the oil to the motor. 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. A motor axis, the intermediate axis, and the differential axis to extend in parallel with one another in a horizontal direction. Each of the intermediate axis and the differential axis is lower than the motor axis. A line segment imaginarily joining the motor axis and the intermediate axis, a line segment imaginarily joining the intermediate axis and the differential axis, and a line segment imaginarily joining the motor axis and the differential axis when viewed in an axial direction of the motor axis are defined as first, second, and third line segments, respectively. The first line segment extends substantially along a vertical direction. The second line segment extends substantially along a horizontal direction.
-
公开(公告)号：US20230132520A1
公开(公告)日：2023-05-04
申请号：US17969689
申请日：2022-10-20
Applicant: NIDEC CORPORATION
Inventor： Keisuke NAKATA , Yuki ISHIKAWA , Sota DOI , Kouhei OBA
Abstract: A rotating electrical machine includes an electricity removal device in electrical contact with a shaft and a housing, a channel, a nozzle having a through hole communicating with an inside of the shaft, and a seal radially between the shaft and the housing. The shaft includes a hollow first portion and a second portion having a lid on a first side of the first portion and an extension extending from the lid to the first side. The extension axially passes through the through hole. The device is in contact with the extension on the first side relative to the through hole. The seal is on the first side relative to the nozzle and on the second side relative to the device. The shaft includes a channel communicating the first portion and the through hole. The channel opens toward an axial gap between the nozzle and the seal of the housing.
-
公开(公告)号：US20220393535A1
公开(公告)日：2022-12-08
申请号：US17751574
申请日：2022-05-23
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Hiroyuki ABE , Hironobu KUMAGAI
Abstract: In a motor, a stator includes: a stator core having slots arranged in a circumferential direction; and conductor connection bodies with conductors connected in series and inserted into the slots. A conductor connection body includes: a first portion wave-wound toward one side in the circumferential direction from a first end to a second end; a second portion wave-wound toward the one side in the circumferential direction from a third end to a fourth end; and a folded portion connecting the first and second portions. The first and third ends protrude in an axial direction from different slots in the circumferential direction, and the second and fourth ends protrude in the axial direction from different slots in the circumferential direction. The conductors include a folded conductor that forms a folded portion connecting the second end of the first portion and the fourth end of the second portion.
-
-
-
-
-
-
-
-
-
Search Results
57
records
(took 0.021 seconds)
