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公开(公告)号：US10651701B2
公开(公告)日：2020-05-12
申请号：US15751490
申请日：2016-08-08
Applicant: Nidec Corporation
Inventor： Yu Asahi , Hidehiro Haga , Shunsuke Murakami
IPC: H02K3/18 , H02K3/52 , H02K3/28 , H02K3/46 , H02K15/095
Abstract: A motor includes a rotor having a shaft disposed along a central axis extending in a vertical direction; and a stator opposed to the rotor in a radial direction with a gap therebetween. The stator includes: an annular core back extending in a circumferential direction; a plurality of teeth extending from the core back in the radial direction; a plurality of coils formed of a conductive wire wound around the teeth, the coils forming a plurality of connection systems; and an insulator, at least part of which is positioned between the teeth and the coils. The coils include: a first coil wound around the teeth via the insulator; and a second coil wound around the teeth via the first coil and the insulator.
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公开(公告)号：US10374480B2
公开(公告)日：2019-08-06
申请号：US15751182
申请日：2016-08-05
Applicant: NIDEC CORPORATION
Inventor： Hidehiro Haga , Yu Asahi , Takao Atarashi , Shunsuke Murakami , Satomi Takei
Abstract: A motor includes a shaft disposed along a central axis extending in an up-down direction, a rotor assembly mounted on the shaft, a stator radially facing the rotor assembly with a clearance therebetween, and a plurality of busbars electrically connected to the stator. The busbar includes a first busbar and a second busbar. The first busbar has an upper disposed portion that is disposed above the second busbar. The second busbar has a busbar cavity that is recessed downward at a position that overlaps with the upper disposed portion in an axial direction.
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Patent Agency Ranking
公开(公告)号：US11031839B2
公开(公告)日：2021-06-08
申请号：US16089674
申请日：2017-03-25
Applicant: NIDEC CORPORATION
Inventor： Yu Asahi , Hidehiro Haga , Shunsuke Murakami , Masayoshi Maeda
Abstract: A motor includes a rotor including a rotation axis; a stator including coils; a cylindrical housing including an opening portion; busbars including busbar connecting portions; terminal pins including terminal connecting portions in a first direction orthogonal to an axial direction; a terminal support holding the terminal pins, wherein the housing has an insertion hole that opens towards an axial-direction one end side; the terminal support includes a protruding portion inserted into the insertion hole; one of the protruding portion and the insertion hole includes a fitting portion fitted to the other of the protruding portion and the insertion hole, and a guiding portion positioned on an insertion-end side of the fitting portion; and, in the guiding portion, a side surface on a side of the first direction is inclined in a direction opposite to the first direction with increasing distance from an open end of the insertion hole.
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公开(公告)号：US20180241272A1
公开(公告)日：2018-08-23
申请号：US15751492
申请日：2016-08-05
Applicant: NIDEC CORPORATION
Inventor： Yu Asahi , Shunsuke Murakami , Takao Atarashi , Masayoshi Maeda
CPC classification number: H02K3/50 , H02K1/2753 , H02K3/04 , H02K3/325 , H02K3/38 , H02K5/1732 , H02K15/0068 , H02K2203/09
Abstract: A motor includes a rotor including a shaft that is disposed along a central axis extending in an up-down direction; a stator radially facing the rotor with a clearance therebetween and including a plurality of coils; and a busbar electrically connected to the coils. The coils each have a coil end that is an end of a conductive wire. The busbar includes a first conductive member and a second conductive member that serve as different members. The first conductive member has a first coil end connector that is electrically connected to the coil ends. The second conductive member has a second coil end connector that is electrically connected to the coil ends. The plurality of coil ends are sandwiched between the first coil end connector and the second coil end connector and provide electrical continuity between the first coil end connector and the second coil end connector.
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公开(公告)号：US11245301B2
公开(公告)日：2022-02-08
申请号：US16487205
申请日：2018-03-20
Applicant: Nidec Corporation
Inventor： Tomoki Iga , Masayoshi Maeda , Yu Asahi , Takao Atarashi
Abstract: A bus bar unit includes an inner bus bar and an outer bus bar extending in a circumferential direction about a central axis of a motor and connected to a coil of a stator and held by a bus bar holder which is a resin molded structure and the outer bus bar is disposed outward in a radial direction with respect to the inner bus bar. The bus bar holder includes a first inner support wall to support an outer circumferential surface of the inner bus bar, a first outer support wall to support an inner circumferential surface of the outer bus bar, openings open in parallel or substantially in parallel in at least one of the first inner support wall and the first outer support wall in the circumferential direction, and through which a lead wire of the coil passes, and a connection rib extending in the radial direction between the openings adjacent to each other in the circumferential direction to connect the first inner support wall to the first outer support wall.
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公开(公告)号：US11205936B2
公开(公告)日：2021-12-21
申请号：US16487204
申请日：2018-01-30
Applicant: Nidec Corporation
Inventor： Yu Asahi , Takao Atarashi , Masayoshi Maeda
Abstract: A phase bus bar unit includes a bus bar holder that is an insulator and supports of bus bars for phases of a motor rotating about a central axis, and a bus bar cover which is an insulator, covers at least one side of each of the bus bars in an axial direction, and is fixed to the bus bar holder. Each of the bus bars includes a base, extensions each extending outward in a radial direction from the base, and a terminal installed on an outer end of each of the extensions in the radial direction. The bus bar cover includes protrusions each protruding to another side in the axial direction, and the protrusions are in contact with each of the bus bars while at least one of the protrusions is in contact with the base at or adjacent to the extension.
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公开(公告)号：US20180233985A1
公开(公告)日：2018-08-16
申请号：US15751182
申请日：2016-08-05
Applicant: NIDEC CORPORATION
Inventor： Hidehiro Haga , Yu Asahi , Takao Atarashi , Shunsuke Murakami , Satomi Takei
IPC: H02K3/50
CPC classification number: H02K3/50 , H02K1/2753 , H02K3/38 , H02K5/1732 , H02K2203/09
Abstract: A motor includes a shaft disposed along a central axis extending in an up-down direction, a rotor assembly mounted on the shaft, a stator radially facing the rotor assembly with a clearance therebetween, and a plurality of busbars electrically connected to the stator. The busbar includes a first busbar and a second busbar. The first busbar has an upper disposed portion that is disposed above the second busbar. The second busbar has a busbar cavity that is recessed downward at a position that overlaps with the upper disposed portion in an axial direction.
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