-
公开(公告)号：US11936276B2
公开(公告)日：2024-03-19
申请号：US17601756
申请日：2020-04-14
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga , Yohei Miyata , Hironobu Kumagai
CPC classification number: H02K5/225 , H02K9/19 , H02K9/193 , H02K11/225 , H02K11/25 , H02K11/33 , H02K24/00
Abstract: A motor assembly includes a motor, an electric pump to supply oil to the motor, an inverter assembly connected to the motor, and a first wire harness and a second wire harness. The inverter assembly includes an inverter to convert a high-voltage direct current into an alternating current and supply the alternating current to the motor, and a controller to control the inverter and the electric pump. The first wire harness electrically connects an external power supply and the inverter assembly, and passes a low-voltage power supply line. The low-voltage power supply line is, at a branch point, branched into a controller power supply line to supply drive power to the controller and a pump power supply line to supply drive power to the electric pump.
-
公开(公告)号：US11486484B2
公开(公告)日：2022-11-01
申请号：US16655344
申请日：2019-10-17
Applicant: Nidec Corporation , Nidec Tosok Corporation
Inventor： Shuhei Nakamatsu , Keisuke Fukunaga , Naohiro Wada , Masumi Mizutani
IPC: F16H57/03 , F16H57/04 , B60K1/00 , B60K17/04 , F01M1/02 , H02K5/22 , H02K7/00 , H02K9/19 , H02P27/04 , F16H57/02
Abstract: A motor assembly includes a motor, a housing that accommodates the motor, an inverter electrically connected to the motor, an inverter case that accommodates the inverter, an auxiliary device provided in a lower portion of the housing to oppose a road surface, a wire harness that includes a first connector connected to a connector provided in the inverter case, a second connector connected to a connector provided in the auxiliary device, and an electric wire connecting the first connector and the second connector, and a lower connector cover provided in the lower portion of the housing and covering the second connector from a lower side.
-
公开(公告)号：US10855148B2
公开(公告)日：2020-12-01
申请号：US15767416
申请日：2016-10-14
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
Abstract: An electric motor is provided comprising a rotor unit, a stator unit, a housing, and a bearing mechanism. The rotor unit rotates about a vertical center axis. The stator unit is disposed around the rotor unit. The stator unit is fixed inside of the housing. The bearing mechanism rotatably supports the rotor unit relative to the stator unit. The housing comprises a cylindrical wall portion with a bottom and a cover plate, which covers an opening of the cylindrical wall portion. The bearing mechanism further comprises at least two bearings, an upper bearing is sustained by the cover plate and a lower bearing is sustained by the bottom of the housing. The cover plate is made of electrically conductive elements and comprises at least one projection protruding toward the upper outer side of the cover plate so that the at least one projection is configured to contact, directly or indirectly, at least one grounding contact of a controller, which drives and controls the electric motor disposed on the upper outer side of the cover plate. The controller is connected to a ground potential through the cover plate and the motor housing.
-
公开(公告)号：US10211699B2
公开(公告)日：2019-02-19
申请号：US15031067
申请日：2014-09-25
Applicant: NIDEC CORPORATION
Inventor： Keisuke Fukunaga
Abstract: A bus bar unit used in a motor including a coil may include a plurality of bus bars including a metal material. At least one of the plurality of bus bars may include a body portion extending in substantially a circumferential direction relative to a center axis of the motor; a first terminal portion electrically connected to the coil of the motor; and an arc-shaped bridge portion connecting a first end portion of the body portion to the first terminal portion. The bridge portion may lie across at least an other one of the plurality of bus bars. An axial position of the body portion and an axial position of the first terminal portion may at least partially overlap with each other.
-
公开(公告)号：US12027946B2
公开(公告)日：2024-07-02
申请号：US17436585
申请日：2020-01-10
Applicant: NIDEC CORPORATION
Inventor： Shuhei Nakamatsu , Tsubasa Tamura , Hitoshi Kuroyanagi , Keisuke Fukunaga
IPC: H02K5/22 , B60L50/51 , H02K1/32 , H02K5/20 , H02K7/116 , H02K9/19 , H02K9/193 , H02K11/30 , H02K11/33
CPC classification number: H02K5/22 , B60L50/51 , H02K1/32 , H02K5/20 , H02K5/203 , H02K5/225 , H02K7/116 , H02K9/19 , H02K9/193 , H02K11/30 , H02K11/33 , H02K2205/09
Abstract: A motor unit according to an aspect of the present invention includes: a motor having a rotor that rotates about a motor axis and a stator located radially outside the rotor; an inverter that controls a current to be supplied to the motor; and a housing having a motor housing portion that houses the motor and an inverter housing portion that houses the inverter. The housing further includes an inverter housing provided with a top plate portion covering an opening of the inverter housing portion. The inverter is fixed to a back surface of the top plate portion, facing the inside of the inverter housing portion.
-
Patent Agency Ranking
公开(公告)号：US11909276B2
公开(公告)日：2024-02-20
申请号：US16989975
申请日：2020-08-11
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
Abstract: An electric motor includes a rotor assembly rotatable about a vertical center axis, a stator assembly around the rotor assembly, a housing inside of which the stator assembly is fixed, and a bearing mechanism rotatably supporting the rotor assembly. The housing includes a cylindrical wall portion inside of which the stator assembly is located, a bottom at a bottom vertical end of the cylindrical wall portion and extending radially outward, and a cover plate on one side of the stator assembly opposite to the bottom. The cover plate includes electrically conductive elements and at least one columnar projection protruding away from the stator assembly so that the at least one projection contacts at least one grounding contact of a controller on one side of the cover plate, the controller being electrically connected to a ground potential through the housing.
-
公开(公告)号：US11515758B2
公开(公告)日：2022-11-29
申请号：US16772807
申请日：2018-12-20
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：US11201518B2
公开(公告)日：2021-12-14
申请号：US16574203
申请日：2019-09-18
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
Abstract: A stator core includes plate-shaped core members laminated to define the stator core. Each core member includes an annular core back portion, and tooth portions that project radially inward from an inner circumferential surface of the core back portion. The core back portion includes at least one recessed portion recessed radially inward from an outer circumferential surface of the core back portion, and at least one welded portion arranged at a corresponding one of the at least one recessed portion to join axially adjacent ones of the core members. The at least one recessed portion is recessed in a radial direction is in a range of about 0.2 mm to about 1.5 mm, both inclusive.
-
公开(公告)号：US11081927B2
公开(公告)日：2021-08-03
申请号：US16820896
申请日：2020-03-17
Applicant: Nidec Corporation
Inventor： Matthias Fischer , Keisuke Fukunaga , Thomas Kuebler , Juergen Schmid
Abstract: A busbar assembly for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.
-
公开(公告)号：US10256694B2
公开(公告)日：2019-04-09
申请号：US14760219
申请日：2013-12-25
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga , Takayuki Migita
Abstract: A motor includes a busbar made of metal and a busbar holder made of resin. The busbar includes a plate shaped portion and terminals extending upward from the plate shaped portion and electrically connected to an end portion of a conducting wire included in coils. In addition, a busbar portion defined by the busbar and the busbar holder and a rotor overlap each other in an axial direction. The busbar portion widens in a radial direction, and dimensions of the entire motor in the radial direction are significantly reduced or minimized. In addition, the number of busbars stacked in the axial direction is reduced. As a result, the dimensions of the motor in the axial direction are significantly reduced or minimized.
-
-
-
-
-
-
-
-
-
Search Results
32
records
(took 0.017 seconds)
