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公开(公告)号：US20220345009A1
公开(公告)日：2022-10-27
申请号：US17727858
申请日：2022-04-25
Applicant: Nidec Corporation
Inventor： Hiroki YOKOZAWA , Kazuyuki YAMAMOTO , Daisuke OGASAWARA , Keigo NAKAMURA
Abstract: A drive motor module includes a motor, an inverter electrically connected to the motor, a gear connected to a drive shaft extending in parallel with a motor axis of the motor to transfer power from the motor to the drive shaft, and a housing including a motor housing that houses the motor, an inverter housing that houses the inverter, and a gear housing that houses the gear. The inverter housing is spaced apart from the drive shaft in a radial direction of the drive shaft. The gear housing is located at one side of the drive shaft in a longitudinal direction. and the housing includes at least one rib connecting the inverter housing and the gear housing.
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公开(公告)号：US20220337134A1
公开(公告)日：2022-10-20
申请号：US17720458
申请日：2022-04-14
Applicant: Nidec Corporation
Inventor： Daisuke OGASAWARA , Kazuyuki YAMAMOTO , Hiroki YOKOZAWA , Keigo NAKAMURA
Abstract: A drive motor module includes a motor, an inverter electrically connected to the motor, a housing including a motor housing that houses the motor and an inverter housing that houses the inverter, in which the housing includes a wall portion including a first side and a second side opposing each other and directed outside of the housing, N (N is an integer of 2 or more) high rigidity portions provided with a distance therebetween along the first side and having higher rigidity than the wall portion, and a first rib protruding from the wall portion and extending obliquely at a positive angle from first to (N−1)-th high rigidity portions toward the second side when the N high rigidity portions provided along the first side are defined as the first to N-th high rigidity portions in order.
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公开(公告)号：US20240405645A1
公开(公告)日：2024-12-05
申请号：US18696860
申请日：2022-06-10
Applicant: NIDEC CORPORATION
Inventor： Hiroki AKAISHI , Kazuyuki YAMAMOTO , Daisuke OGASAWARA
Abstract: An electric power unit accommodates an electric motor in a first portion of a housing, and an inverter in a second portion of the housing. An upper surface opening portion of the second portion is covered with an inverter cover having a flat plate shape. A first region, a second region, and a third region sandwiched between the first region and the second region are formed on an upper surface of the inverter cover. A first connection portion is arranged in the first region. Second connection portions are arranged in the second region. A plurality of ribs are arranged in parallel in the third region. The first rib having one longitudinal end portion connected to the first connection portion and the second rib connected to the second connection portions are arranged in a direction in which the first rib and the second rib are arranged in parallel.
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公开(公告)号：US20220085685A1
公开(公告)日：2022-03-17
申请号：US17420141
申请日：2020-01-06
Applicant: NIDEC CORPORATION
Inventor： Yusuke MAKINO , Daisuke OGASAWARA
Abstract: A motor includes a rotor, a stator, and a support member. The rotor includes a rotor magnet, a magnet holding portion, and spoke portions. The stator includes a plurality of coils and a stator core. The support member includes a stator holding portion and a mount portion. The mount portion includes a plurality of slits extending radially inward from a radially outer end portion of the mount portion. The slits each have openings in an outer circumferential end and an upper surface of the mount portion. The openings of the slits positioned in the upper surface of the mount portion are positioned between the coils adjacent to each other in the circumferential direction when viewed in the axial direction.
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公开(公告)号：US20230101010A1
公开(公告)日：2023-03-30
申请号：US17952313
申请日：2022-09-26
Applicant: NIDEC CORPORATION
Inventor： Daisuke OGASAWARA , Jun MURAKAMI , Hiroki AKAISHI , Kazuyuki YAMAMOTO , Yuki ISHIKAWA , Keisuke NAKATA
Abstract: In an electric power unit that includes: a motor accommodating portion and a gear accommodating portion in a housing; and an inverter accommodating portion and an auxiliary machine attachment portion formed on side walls of the housing, the auxiliary machine attachment portion is formed by a protruding portion having at least a first vertical surface and a first horizontal surface formed on one of the side walls forming the motor accommodating portion and the gear accommodating portion of the housing, a first rib extending in a horizontal direction is formed on the first vertical surface facing one axial side of the auxiliary machine attachment portion, and a second rib, which extends in a vertical direction with respect to the first horizontal surface and connects the first horizontal surface and the inverter accommodating portion, is formed on the first horizontal surface, adjacent to the inverter accommodating portion, of the auxiliary machine attachment portion.
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Patent Agency Ranking
公开(公告)号：US20230100892A1
公开(公告)日：2023-03-30
申请号：US17950100
申请日：2022-09-22
Applicant: NIDEC CORPORATION
Inventor： Daisuke OGASAWARA , Yuki ISHIKAWA , Keisuke NAKATA , Jun MURAKAMI , Hiroki AKAISHI , Kazuyuki YAMAMOTO
Abstract: In an electric power unit which accommodates at least an electric motor in a housing, polygonal rib regions in which polygonal ribs are respectively formed are provided on at least two surfaces of an outer peripheral surface of the housing, and the polygonal rib regions are connected by a circumferential rib. Here, a first axial rib and a second axial rib extending parallel to an axial direction are formed on the outer peripheral surface of the housing, and the polygonal rib region is provided in a portion sandwiched between the first axial rib and the second axial rib. Further, the circumferential rib is formed over the entire part of the polygonal rib region in a circumferential direction. Note that the polygonal rib is a honeycomb rib.
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公开(公告)号：US20220299042A1
公开(公告)日：2022-09-22
申请号：US17634256
申请日：2020-08-19
Applicant: Nidec Corporation
Inventor： Daisuke OGASAWARA , Yusuke MAKINO
Abstract: A ducted fan that includes a housing with a cylindrical or substantially cylindrical shape, a ring motor in the housing, and fan blades extending radially inward from an inner circumferential surface of the ring motor. The housing includes a first housing that covers a first side in an axial direction of the ring motor and a second housing that covers a second side in the axial direction of the ring motor. The second housing includes through holes penetrating the second housing at a portion on the second side in the axial direction with respect to the ring motor. The housing includes an outer circumferential wall including first and second wall portions located in outer circumferential portions of the first and second housings. The outer circumferential wall includes opening portions defined by a gap between the first and second wall portions.
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公开(公告)号：US20200177056A1
公开(公告)日：2020-06-04
申请号：US16626884
申请日：2018-09-28
Applicant: NIDEC CORPORATION
Inventor： Yoshinobu NAKAMURA , Takaaki BANDO , Daisuke OGASAWARA , Tsutomu FURUKAWA , Kazutoshi MATSUDA
Abstract: In an aspect of the motor of the present invention, the motor includes a shaft centered on a center axis extending in a predetermined direction, and a stator located radially outside of the shaft. The stator has a coil wound around the stator. The motor further includes a housing member having a substantially cylindrical shape with a bottom, where the housing member accommodates substantially the entire stator, and supports the shaft, a cooling medium with which the housing member is filled, where the stator and the coil is immersed in the cooling medium, and a rotor that rotates radially outside of the housing member with the center axis of the shaft as a rotation center.
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公开(公告)号：US20230344303A1
公开(公告)日：2023-10-26
申请号：US17798556
申请日：2020-09-14
Applicant: NIDEC CORPORATION
Inventor： Daisuke OGASAWARA , Jun MURAKAMI , Hiroki AKAISHI , Kazuyuki YAMAMOTO , Mizuki NIHIRA
Abstract: A motor includes a rotor, a stator, a motor housing, an inverter, and an inverter case. The motor housing and the inverter case are arranged in contact with each other. The inverter case has a side wall surrounding the inverter when viewed from above. The side wall includes an upper side wall located in an upper part of the side wall, a step wall extending from a lower end of the upper side wall, and a lower side wall extending downward from an end edge of the step wall. The side wall has a plurality of outer ribs extending in the up-down direction. The outer rib is connected to the outer surface of the step wall and the outer surface of the upper side wall or the lower side wall located inside the inverter case relative to the step wall.
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公开(公告)号：US20230155448A1
公开(公告)日：2023-05-18
申请号：US17798081
申请日：2020-09-14
Applicant: NIDEC CORPORATION
Inventor： Daisuke OGASAWARA , Jun MURAKAMI , Kazuyuki YAMAMOTO , Mizuki NIHIRA , Keigo NAKAMURA
Abstract: An inverter device capable of suppressing generation of vibration and a puddle in a top wall of an inverter case is provided. The inverter device includes an inverter and the inverter case that accommodates the inverter inside the inverter case. The inverter case has a top wall covering the inverter from above. The top wall has a first inclined surface descending from a top part on the upper surface of the top wall toward a first end part of the top wall, and a plurality of first rod-shaped ribs extending from the top part toward the first end part. The first rod-shaped rib has a site in which a protrusion height from the inclined surface increases toward the first end part.
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