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公开(公告)号：US20190319504A1
公开(公告)日：2019-10-17
申请号：US16461019
申请日：2017-11-02
Applicant: Nidec Corporation
Inventor： Takashi SHIRAISHI , Takeshi HONDA , Junichi UNO , Hisashi FUJIHARA , Yasuaki NAKAHARA , Keisuke SAITO
Abstract: A rotor includes a rotor core including laminated thin plate cores. A single thin plate core includes an inner plate portion defining a portion of an inner core portion and outer plate portions defining a portion of an outer core portion. At least some of the laminated thin plate cores include a connecting portion. A number of connecting portion is one or a plurality, and, when the number of connecting portions is a plurality, the connecting portions at positions other than both left and right sides of each other in a circumferential direction, and, in plan view, the thin plate core includes the connecting portion at a position different from that of a connecting portion in another thin plate core adjacent in an axial direction.
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公开(公告)号：US20160352189A1
公开(公告)日：2016-12-01
申请号：US15146258
申请日：2016-05-04
Applicant: NIDEC CORPORATION
Inventor： Yosuke YAMADA , Ryusuke SATO , Yasuaki NAKAHARA , Yusuke MAKINO , Hisashi FUJIHARA
IPC: H02K11/215
CPC classification number: H02K11/215 , H02K5/04 , H02K5/225 , H02K11/33
Abstract: A case includes a cylindrical housing arranged to hold a stator, and having an opening portion at a top thereof; and a motor cover fitted to an upper side of the housing, and arranged to cover an upper side of the stator. A busbar unit includes a sensor busbar electrically connected to a rotation sensor, and a busbar holder arranged at the opening portion to hold the sensor busbar. The case includes a case through hole arranged to open into a space outside of the case. The busbar holder includes a cylindrical holder body portion having at least a portion thereof arranged radially inside of the opening portion; and a protruding portion arranged to protrude out of the case, and having at least a portion thereof arranged in the case through hole. A gap is defined circumferentially between the protruding portion and an edge of the case through hole.
Abstract translation: 壳体包括布置成保持定子的圆柱形壳体，并且在其顶部具有开口部分; 以及安装在所述壳体的上侧并且被布置成覆盖所述定子的上侧的电机盖。 母线单元包括电连接到旋转传感器的传感器母线和布置在开口部分处以保持传感器母线的汇流条保持器。 壳体包括布置成打开到壳体外部的空间的壳体通孔。 汇流条保持器包括：圆柱形保持器主体部分，其至少一部分布置在开口部分的径向内侧; 以及突出部，其布置成从壳体突出，并且其至少一部分布置在壳体通孔中。 在突出部分和壳体通孔的边缘之间周向地限定间隙。
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公开(公告)号：US20200161913A1
公开(公告)日：2020-05-21
申请号：US16675260
申请日：2019-11-06
Applicant: Nidec Corporation
Inventor： Yasuaki NAKAHARA , Takashi SHIRAISHI
Abstract: A rotor includes magnets, and magnet holes each of which includes an opening extending in a radial direction in plan view, penetrates a rotor core in the axial direction, and includes the magnet located therein. A magnetic pole surface of the magnet opposes a circumferential direction. The rotor core includes first thin plate cores and second thin plate cores. The first thin plate cores include an annular first inner plate, first outer plates on a radially outer side of the first inner plate and arrayed side by side in the circumferential direction, first inner connecting portions connecting the first inner plate and the first outer plate, and a first outer connecting portion that is on a radially outer side of the first outer plate and connects the adjacent first outer plates in the circumferential direction.
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公开(公告)号：US20190036406A1
公开(公告)日：2019-01-31
申请号：US16145317
申请日：2018-09-28
Applicant: Nidec Corporation
Inventor： Yasuaki NAKAHARA , Takayuki MIGITA , Hisashi FUJIHARA , Tsuyoshi NAKAMURA
CPC classification number: H02K3/28 , H02K1/146 , H02K3/04 , H02K3/18 , H02K3/325 , H02K3/52 , H02K3/522 , H02K2203/09 , H02K2213/03
Abstract: A stator includes conductive wires wound around teeth, and slots between adjacent teeth in a circumferential direction. The conductive wires include conductive wires of three phases corresponding to a U-phase, a V-phase, and a W-phase, and the conductive wires are delta connected. Coils, in which any one of the conductive wires is wound around the teeth, are repeatedly disposed in order of the U-phase, the V-phase, and the W-phase in the circumferential direction. In each of the U-phase, the V-phase, and the W-phase, at least two coils are connected in series and adjacent in the circumferential direction. A direction in which the U-phase and W-phase conductive wires are wound around the teeth and a direction in which the V-phase conductive wire is wound around the tooth are opposite.
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公开(公告)号：US20160254711A1
公开(公告)日：2016-09-01
申请号：US15052285
申请日：2016-02-24
Applicant: NIDEC CORPORATION
Inventor： Tatsuro KAWAMOTO , Takayuki MIGITA , Takao ATARASHI , Yasuaki NAKAHARA
CPC classification number: H02K1/2773 , H02K1/272 , H02K1/274 , H02K15/03 , H02K2213/03
Abstract: A motor may include a rotor including a shaft; a stator; and a bearing supporting the shaft. The rotor may include a plurality of core pieces on an outer side of the shaft, a plurality of permanent magnets, and a mold resin part between the core pieces. The neighboring core pieces may include a magnet insertion hole provided therebetween. The permanent magnet may include two poles, with poles of neighboring magnets facing each other having identical polarity. The mold resin part may include at least one first guide part disposed closer to one side than the center between neighboring core pieces, and covers at least a portion of a surface on one side of the magnet insertion hole in a circumferential direction, the permanent magnet being in direct indirect contact via resin with the core piece disposed on the other side of the magnet insertion hole.
Abstract translation: 马达可以包括：转子，其包括轴; 定子 和支撑轴的轴承。 转子可以包括在轴的外侧上的多个芯片，多个永磁体和在芯片之间的模制树脂部分。 相邻的芯片可以包括设置在它们之间的磁体插入孔。 永磁体可以包括两个极，相邻磁体的磁极彼此相对具有相同的极性。 模具树脂部件可以包括至少一个第一引导部件，该第一引导部件设置成比相邻的芯片之间的中心更靠近一侧，并且在圆周方向上覆盖磁体插入孔的一侧的表面的至少一部分，永磁体 通过树脂直接间接接触，芯片设置在磁体插入孔的另一侧。
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Patent Agency Ranking
公开(公告)号：US20190190356A1
公开(公告)日：2019-06-20
申请号：US16282468
申请日：2019-02-22
Applicant: Nidec Corporation
Inventor： Yasuaki NAKAHARA , Takayuki MIGITA , Hiroshi KITAGAKI , Takeshi HONDA , Hisashi FUJIHARA
CPC classification number: H02K15/024 , H02K1/165 , H02K1/18 , H02K3/12 , H02K3/28 , H02K15/02 , H02K15/095
Abstract: A stator includes core pieces in which at least first and second laminate members are laminated, the first laminate member includes a first tooth portion and a first core back portion, the second laminate member includes a second tooth portion and a second core back portion, the first core back portion includes a first protrusion on one side thereof in a circumferential direction and a first recess on the other side thereof in the circumferential direction, the second core back portion includes a second recess on one side thereof in a circumferential direction and a second protrusion on the other side thereof in the circumferential direction, and an area of a region in which the first and second core back portions of the core piece adjacent thereto overlap in a lamination direction is greater than a circumferential cross-sectional area of the first core back portion circumferentially inward from the first protrusion.
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公开(公告)号：US20190190325A1
公开(公告)日：2019-06-20
申请号：US16282470
申请日：2019-02-22
Applicant: Nidec Corporation
Inventor： Yasuaki NAKAHARA , Takayuki MIGITA , Hiroshi KITAGAKI , Takeshi HONDA , Hisashi FUJIHARA
CPC classification number: H02K1/148 , H02K1/12 , H02K1/18 , H02K15/02 , H02K15/022
Abstract: A stator includes core pieces in which at least first and second laminate members are laminated, the first laminate member includes a first tooth portion and a first core back portion, the second laminate member includes a second tooth portion and a second core back portion, the first core back portion includes a first protrusion on one side thereof in a circumferential direction and a first recess on another side thereof in the circumferential direction, the second core back portion includes a second recess on one side thereof in a circumferential direction and a second protrusion on the other side thereof in the circumferential direction, and an area of a region in which the first core back portion and the second core back portion of the core piece adjacent thereto overlap in a lamination direction is greater than a circumferential cross-sectional area of the first core back portion circumferentially inward from the first protrusion.
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公开(公告)号：US20180226851A1
公开(公告)日：2018-08-09
申请号：US15944872
申请日：2018-04-04
Applicant: Nidec Corporation
Inventor： Tatsuro KAWAMOTO , Takayuki MIGITA , Takao ATARASHI , Yasuaki NAKAHARA
IPC: H02K1/27
CPC classification number: H02K1/2773 , H02K1/272 , H02K1/274 , H02K15/03 , H02K2213/03
Abstract: A motor may include a rotor including a shaft; a stator; and a bearing supporting the shaft. The rotor may include a plurality of core pieces on an outer side of the shaft, a plurality of permanent magnets, a mold resin part between the core pieces, and an interposed part in contact with a surface on one side in a circumferential direction of each of the core pieces. The neighboring core pieces may include a magnet insertion hole provided therebetween. The permanent magnet may include two poles, with poles of neighboring magnets facing each other having identical polarity. Each of the permanent magnets is in indirect contact with the core piece positioned on the other side in the circumferential direction of the magnet insertion hole via the interposed part.
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公开(公告)号：US20190214865A1
公开(公告)日：2019-07-11
申请号：US16325433
申请日：2017-09-29
Applicant: Nidec Corporation
Inventor： Takayuki MIGITA , Takeshi HONDA , Hirofumi MUTO , Osamu FUJIMOTO , Hiroshi KITAGAKI , Yasuaki NAKAHARA
Abstract: A rotor core includes first and second laminate steel plates extending in a radial direction with respect to a central axis. The first laminate steel plate includes a first base portion positioned on a radially outer side of the central axis, and pieces separately positioned on a radially outer side of the first base portion with penetrating portions therebetween, and disposed at predetermined intervals in a circumferential direction. The second laminated steel sheet includes a second base portion positioned on a radially outer side of the central axis, and annular portions separately disposed on a radially outer side of the second base portion with penetrating portions therebetween, and extending in a circumferential direction. The rotor core is defined by the first laminate steel plates and at least one of the second laminate steel plates laminated in an axial direction.
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公开(公告)号：US20190190357A1
公开(公告)日：2019-06-20
申请号：US16282471
申请日：2019-02-22
Applicant: Nidec Corporation
Inventor： Yasuaki NAKAHARA , Takayuki MIGITA , Hiroshi KITAGAKI , Takeshi HONDA , Hisashi FUJIHARA
Abstract: A stator includes core pieces in which at least first and second laminate members are laminated, the first laminate member includes a first tooth portion and a first core back portion, the second laminate member includes a second tooth portion and a second core back portion, positions of both circumferential ends of the first core back portion are different from positions of both circumferential ends of the second core back portion, the first core back portion and the second core back portion have an inclined or curved shape at a lower side of one side thereof in the circumferential direction or the other side thereof in the circumferential direction which overlaps the core piece adjacent thereto, and the inclined or curved shape of the first core back portion and the second core back portion is at a portion protruding in the circumferential direction with respect to the second core back portion and the first core back portion in a plan view.
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