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公开(公告)号：US20210152044A1
公开(公告)日：2021-05-20
申请号：US16636041
申请日：2018-07-27
Applicant: Nidec Corporation
Inventor： Masanori YOSHIKAWA , Yusaku YOSHIDA , Hideo FUJIWARA , Takashi SEGUCHI , Kosuke OGAWA
Abstract: A bus-bar unit includes bus-bars and a bus-bar holder supporting the bus-bars. The bus-bar includes a first and a second bus-bar piece, including a plate. The first bus-bar piece includes a coil wire connecting portion connected to a coil wire drawn from a stator, and a first junction terminal joined to the second bus-bar piece. The second bus-bar piece includes an external connection terminal connected to an external device, a second junction terminal joined to the first bus-bar piece, and a second piece main body connecting them. The second piece main body has a first extension extending from the external connection terminal along a direction perpendicular or substantially perpendicular to the axial direction, a second extension extending from the second junction terminal along a direction perpendicular or substantially perpendicular to the axial direction, and a crank portion located between them and bent in a crank shape in a plate thickness direction.
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公开(公告)号：US20200014271A1
公开(公告)日：2020-01-09
申请号：US16487220
申请日：2018-03-16
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Tatsuya ONISHI , Takashi SEGUCHI , Yasuhiko IWANO
Abstract: A motor includes a first bus bar including a first extension extending in a first direction perpendicular to the axial direction, a second extension extending from an end of the first extension in a second direction perpendicular to the axial direction and intersecting the first direction, and a first bus bar body including a first corner to which the first extension and the second extension are connected. A holder includes a support to support the first bus bar body from another side in the axial direction, a pair of first walls parallel or substantially parallel in a first perpendicular direction and to which the first extension is fitted in the first perpendicular direction, and a pair of second walls parallel in a second perpendicular direction and to which the second extension is fitted in the second perpendicular direction. The pair of first walls include wall surfaces that face each other in the first perpendicular direction and are spaced by a gap from each other, and extend in the first direction. The pair of second walls include wall surfaces that face each other in the second perpendicular direction and are spaced by a gap from each other, and extend in the second direction. A first space is provided between the pair of first walls and the pair of second walls. The first corner is provided in the first space.
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公开(公告)号：US20240333098A1
公开(公告)日：2024-10-03
申请号：US18621098
申请日：2024-03-29
Applicant: NIDEC CORPORATION
Inventor： Kosuke OGAWA , Shuji IWASAKI , Masami SUGINO , Yuki YANAGITA
Abstract: A rotor includes: a rotor core having first and second vent holes penetrating in an axial direction; and a fan disposed to face at least one end surface on an axial side of the rotor core, and having an outflow path connected to the first vent hole and an inflow path connected to the second vent hole. The fan includes a first surface facing the end surface, an outer surface positioned radially outside the first surface, and a first recess portion in the first surface and axially overlapping the first vent hole. The first recess portion includes a first opening portion opening to the outer surface. At least a part of the outflow path is surrounded by the end surface and the first recess portion. A cross-sectional area of the outflow path in the first opening portion is smaller than a minimum cross-sectional area of the inflow path.
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公开(公告)号：US20200251949A1
公开(公告)日：2020-08-06
申请号：US16637286
申请日：2018-09-28
Applicant: Nidec Corporation
Inventor： Tatsuya ONISHI , Kosuke OGAWA , Takashi SEGUCHI , Shunsuke MURAKAMI
Abstract: A motor includes a rotor including a shaft extending along a central axis, a stator including a coil and opposing the rotor in a radial direction with a gap, and a busbar positioned at one axial-directional side of the stator. The busbar includes a conducting wire-connecting portion connected to a conducting wire extending from the coil. A notch into which the conducting wire is inserted is provided in the conducting wire connecting portion. An inner circumferential surface of the notch includes a bottom surface opposing an opening side of the notch, a first opposed surface extending from the bottom surface towards the opening, and a second opposed surface extending from the bottom surface towards the opening and opposing the first opposed surface.
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公开(公告)号：US20180248438A1
公开(公告)日：2018-08-30
申请号：US15750850
申请日：2016-08-09
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi HATTORI , Shunsuke MURAKAMI , Takao ATARASHI , Hidehiro HAGA
Abstract: In a motor, a wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires extending upward from a coil, a first conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and a first conducting member, a bus bar unit includes a second conducting member connected to the coil lead wire held by the wire holding portion, and a bus bar holder that holds the second conducting member. A bearing holder includes a through-hole which penetrates the bearing holder in an axial direction and through which a coil end of the coil lead wire or the second conducting member passes.
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Patent Agency Ranking
公开(公告)号：US20210194310A1
公开(公告)日：2021-06-24
申请号：US16636046
申请日：2018-07-27
Applicant: Nidec Corporation
Inventor： Masanori YOSHIKAWA , Yusaku YOSHIDA , Hideo FUJIWARA , Takashi SEGUCHI , Kosuke OGAWA
IPC: H02K3/52
Abstract: A bus-bar unit includes bus-bars and a bus-bar holder supporting the bus-bars. Each bus-bar includes first and second bus-bar pieces. The first bus-bar piece includes a coil wire connection portion connected to a coil wire drawn from the stator and a first joint terminal joined to the second bus-bar piece. The second bus-bar piece includes an external connection terminal connected to an external apparatus and a second joint terminal joined to the first bus-bar piece. At least a portion of the first bus-bar pieces is embedded in the bus-bar holder. The first joint terminal includes a joint surface which faces and is joined to the second joint terminal and an opposite surface facing a side opposite to the joint surface. The joint surface and the opposite surface of the first joint terminal are exposed from the bus-bar holder.
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公开(公告)号：US20200220412A1
公开(公告)日：2020-07-09
申请号：US16638785
申请日：2018-09-25
Applicant: Nidec Corporation
Inventor： Yasuhiko IWANO , Tatsuya ONISHI , Kosuke OGAWA , Takashi SEGUCHI
Abstract: A motor includes a rotor with a shaft disposed along a central axis, a stator including coils and facing the rotor via a gap in a radial direction, bus-bars electrically connected to the stator, and bus-bar holders on one side in the axial direction of the stator that are distinct members separated from each other. The coils define coil groups having power systems different from each other. Each of the bus-bar holders holds at least one of the bus-bars different from each other. In each of the bus-bar holders, at least one of the bus-bars held on the bus-bar holder includes a connection terminal part electrically connected to an electrical component.
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公开(公告)号：US20180323670A1
公开(公告)日：2018-11-08
申请号：US16031474
申请日：2018-07-10
Applicant: Nidec Corporation
Inventor： Hiroshi SAMBUICHI , Kosuke OGAWA , Takashi HATTORI
CPC classification number: H02K3/28 , H02K3/38 , H02K3/522 , H02K15/0068 , H02K2203/09
Abstract: A motor, may include a rotor having a shaft which has its center on a center axis extending in one direction; a stator which surrounds the rotor in the axial circumference, and includes a plurality of coils; and bus bars connecting coil ends extending from the coils. The bus bars may include a plate shape member bent in a thickness direction, a width direction of the bus bars being identical to an axial direction of the motor. Each of the bus bars may include a main body portion, and a coil end connection portion which extends from the main body portion and grips one of the coil ends at an opening that is open toward one direction within a plane perpendicular to the axial direction.
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公开(公告)号：US20180309340A1
公开(公告)日：2018-10-25
申请号：US15765289
申请日：2016-10-12
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi HATTORI
CPC classification number: H02K3/50 , H02K1/14 , H02K3/28 , H02K5/15 , H02K5/16 , H02K5/1732 , H02K5/22 , H02K11/0094 , H02K11/33 , H02K2203/09
Abstract: A motor includes a rotor that includes a shaft centered on a central axis extending in an upward and downward direction; a stator that is positioned to face the rotor; and a bus bar unit that is positioned on an upper side of the stator and connects the stator to a control device. The bus bar unit includes a bus bar and a bus bar holder supporting the bus bar. The bus bar includes a coil connecting portion that is connected to a coil end extending from the stator, a connecting terminal portion that extends upward and is connected to the control device, a support portion that is supported by the bus bar holder, and an arm portion that is positioned between the support portion and the connecting terminal portion. The arm portion extends in a direction intersecting a radial direction in plan view.
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公开(公告)号：US20210028665A1
公开(公告)日：2021-01-28
申请号：US17070988
申请日：2020-10-15
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi HATTORI , Shunsuke MURAKAMI , Takao ATARASHI , Hidehiro HAGA
Abstract: A motor includes a wire support member that includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires extending upward from a coil, a first conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and a first conducting member, a bus bar unit includes a second conducting member connected to the coil lead wire held by the wire holding portion, and a bus bar holder that holds the second conducting member, and a bearing holder includes a through-hole which penetrates the bearing holder in an axial direction and through which a coil end of the coil lead wire or the second conducting member passes.
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