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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：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：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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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：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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Patent Agency Ranking
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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公开(公告)号：US20230102677A1
公开(公告)日：2023-03-30
申请号：US17955547
申请日：2022-09-29
Applicant: NIDEC CORPORATION
Inventor： Hiroki AKAISHI , Kazuyuki YAMAMOTO , Daisuke OGASAWARA , Shuhei NAKAMATSU
Abstract: In an electric power unit including: an electric motor accommodated in a motor accommodating portion formed in a housing; an inverter accommodated in an inverter accommodating portion formed in an upper portion of the housing; and a harness storing portion that is provided in the inverter accommodating portion and protrudes from an end surface of the housing in a motor-axis direction, at least one fastening portion that supports the harness storing portion from below is formed in the harness storing portion, the fastening portion is provided with a seat surface and at least one rib adjacent to the seat surface and connected to a lower surface of the inverter accommodating portion, and the harness storing portion is fastened to the housing by a bolt (fastener) inserted into the seat surface.
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公开(公告)号：US20220352790A1
公开(公告)日：2022-11-03
申请号：US17727835
申请日：2022-04-25
Applicant: NIDEC CORPORATION
Inventor： Hiroki AKAISHI , Kazuyuki YAMAMOTO , Ayumi NAKAGAWA , Shohei FUJIMOTO
Abstract: A drive device includes a motor having a rotor rotatable about a motor axis, a motor housing accommodating the motor, an inverter housing accommodating an inverter electrically connected to the motor, and a gear housing accommodating a gear portion. The inverter housing opens upwardly and is arranged beside the motor housing in a direction intersecting the motor axis. The inverter housing has a bottom wall, and first through fourth side walls extending upward from the bottom wall and surrounding the bottom wall. The first and second side walls face each other, and the third and fourth side walls face each other. The inverter housing includes a first rib extending upward from the bottom wall and connecting the first side wall and the second side wall, and a second rib extending upward from the bottom wall and connecting the third side wall and the fourth side wall.
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公开(公告)号：US20200313506A1
公开(公告)日：2020-10-01
申请号：US16788309
申请日：2020-02-12
Applicant: NIDEC CORPORATION
Inventor： Jun MURAKAMI , Kazuyuki YAMAMOTO , Daisuke OGASAWARA , Yuki ISHIKAWA
Abstract: A motor according to a preferred embodiment of the present disclosure includes a rotor arranged to be capable of rotating about a central axis, a stator located radially outside of the rotor, a housing arranged to house the rotor and the stator, and a plurality of bolts arranged to fasten the stator to the housing. The housing includes a tubular portion arranged radially outside of the stator to surround the stator; a plurality of stator support portions each of which is arranged to project radially inward from an inner circumferential surface of the tubular portion, and includes a seating surface arranged to face a first axial side; and screw holes each of which is arranged to open in the seating surface of a separate one of the stator support portions. The stator includes a plurality of through holes each of which is arranged to extend along an axial direction. The bolts are passed through the through holes of the stator and screwed into the screw holes of the stator support portions. The housing includes a rib arranged to project radially outward from an outer circumferential surface of the tubular portion on the first axial side of the seating surfaces of the stator support portions.
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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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