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公开(公告)号：US20160294240A1
公开(公告)日：2016-10-06
申请号：US15085297
申请日：2016-03-30
Applicant: NIDEC CORPORATION
Inventor： Tatsuro KAWAMOTO , Takayuki MIGITA , Takao ATARASHI , Masateru KAWAKAMI , Takahiro KIZU
Abstract: A motor may include a rotor including a shaft having a central axis; a stator opposite to the rotor, and comprising coils; a bearing supporting the shaft; a metallic bearing holder covering the stator and supporting the bearing; at least one busbar on an opposite axial side of the bearing holder and including a connection terminal connected with a a coil wire extending from one of the coils; and a coil support between the stator and the bearing holder and fixed to the stator. The bearing holder may include at least one through hole. The coil support may include at least one insulating support portion comprising an opening portion. A portion of the opening portion of the insulating support portion having a smallest cross-sectional area in the opening portion lies inside of an edge of one of the through holes of the bearing holder.
Abstract translation: 马达可以包括具有中心轴的轴的转子; 与转子相对的定子，并且包括线圈; 支撑轴的轴承; 覆盖定子并支撑轴承的金属轴承座; 至少一个母线在所述轴承座的相对的轴向侧上，并且包括与从所述线圈中的一个延伸的线圈线连接的连接端子; 以及在定子和轴承座之间并固定在定子上的线圈支撑。 轴承座可以包括至少一个通孔。 线圈支撑件可以包括至少一个包括开口部分的绝缘支撑部分。 绝缘支撑部的开口部的开口部的截面积最小的部分位于轴承座的一个通孔的边缘的内侧。
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公开(公告)号：US20150357878A1
公开(公告)日：2015-12-10
申请号：US14760219
申请日：2013-12-25
Applicant: NIDEC CORPORATION
Inventor： Keisuke FUKUNAGA , Takayuki MIGITA
CPC classification number: H02K5/225 , H02K3/28 , H02K3/50 , H02K5/15 , H02K5/16 , H02K5/1732 , H02K2203/09
Abstract: A motor includes a busbar made of metal and a busbar holder made of resin. The busbar includes a plate shaped portion and terminals extending upward from the plate shaped portion and electrically connected to an end portion of a conducting wire included in coils. In addition, a busbar portion defined by the busbar and the busbar holder and a rotor overlap each other in an axial direction. The busbar portion widens in a radial direction, and dimensions of the entire motor in the radial direction are significantly reduced or minimized. In addition, the number of busbars stacked in the axial direction is reduced. As a result, the dimensions of the motor in the axial direction are significantly reduced or minimized.
Abstract translation: 电动机包括由金属制成的母线和由树脂制成的母线架。 母线包括板状部分和从板状部分向上延伸并电连接到包括在线圈中的导线的端部的端子。 此外，由母线和汇流条保持器和转子限定的汇流条部分沿轴向彼此重叠。 汇流条部分在径向方向上变宽，并且整个马达在径向上的尺寸被显着地减小或最小化。 此外，沿轴向堆叠的母线的数量减少。 结果，马达在轴向上的尺寸显着减小或最小化。
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公开(公告)号：US20210351657A1
公开(公告)日：2021-11-11
申请号：US17285091
申请日：2019-10-19
Applicant: NIDEC CORPORATION
Inventor： Yuki NORIKANE , Hiroshi SAMBUICHI , Takayuki MIGITA
Abstract: A motor includes a housing, a bearing holder, and a lid. The housing includes a tubular housing body having an end portion at one side, a recessed portion recessed from the end portion toward the other side, a housing protrusion extending from a bottom surface of the recessed portion toward the one side, a stepped portion on the one side away from the housing protrusion, and an extension extending from an opening toward the one side. The bearing holder includes a bearing protrusion extending radially outward, disposed in the recessed portion, and fixedly crimped between the housing protrusion and a side surface constituting the recessed portion. The lid is in axial contact with the stepped portion, and the extension is crimped onto the lid. Between the lid and the housing protrusion, an axial gap is formed, and between the housing protrusion and the side surface, a circumferential gap is formed.
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公开(公告)号：US20210305884A1
公开(公告)日：2021-09-30
申请号：US17205072
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takayuki MIGITA
Abstract: A motor includes a housing and a metal shield plate. The housing includes a bearing holder. The shield plate includes a shield plate main body and a protrusion that protrudes upward from the shield plate main body. The protrusion has a tubular shape. In manufacturing the motor, the protrusion of the shield plate is inserted into a through-hole in the bearing holder. A working deformation portion is then formed such that an upper end of the protrusion is deformed to contact an upper surface of the bearing holder.
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公开(公告)号：US20210305853A1
公开(公告)日：2021-09-30
申请号：US17205080
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takayuki MIGITA , Takumi OKADA
Abstract: A connection terminal includes a lower terminal portion, a bent portion, and an upper terminal portion. The bent portion extends radially inward from an upper end of the lower terminal portion. The upper terminal portion extends axially upward from a radially inner end of the bent portion. The upper terminal portion is located radially inside a radially inner end surface of a tooth. In a process of manufacturing a motor, a rotor main body is inserted into a radially inner side of a stator core, using a space defined radially inside the lower terminal portion.
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Patent Agency Ranking
公开(公告)号：US20210083548A1
公开(公告)日：2021-03-18
申请号：US17086513
申请日：2020-11-02
Applicant: Nidec Corporation
Inventor： Yasuo YAMAGUCHI , Takayuki MIGITA , Yuki ISHIKAWA
Abstract: A motor assembly includes a motor, a housing including a housing space to house the motor, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space through the motor to the vertically lower region of the housing space. The oil passage includes a first oil passage extending through an inside of the motor, and a second oil passage extending through an outside of the motor. One of the first oil passage and the second oil passage includes a cooler to cool the oil therein.
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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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公开(公告)号：US20190190344A1
公开(公告)日：2019-06-20
申请号：US16286654
申请日：2019-02-27
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA , Takayuki MIGITA
CPC classification number: H02K5/225 , H02K3/28 , H02K3/50 , H02K5/15 , H02K5/16 , H02K5/1732 , H02K2203/09
Abstract: A motor includes a stationary section and a rotating section rotatably supported about a center axis extending in an axial direction. The stationary section includes coils, a stator core, a wire support made of resin and fixed to the stator core, cylindrical portions with a cylindrical shape extending in the axial direction on a radially outer side of the coils, and a top plate portion extending from the cylindrical portion toward an inside of the stationary section in a radial direction. The wire support includes holding portions provided with through holes or notches penetrating in the axial direction. Conducting wires drawn from the coils extend upward through the through holes or the notches. The top plate portion includes top plate holes. The holding portions and the top plate holes are mutually disposed at a position overlapping in the axial and radial directions.
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公开(公告)号：US20190181724A1
公开(公告)日：2019-06-13
申请号：US16323906
申请日：2017-08-01
Applicant: Nidec Corporation
Inventor： Shuhei NAKAMATSU , Yuki ISHIKAWA , Takayuki MIGITA
Abstract: A motor includes a rotor to rotate about a motor axis, and a stator radially outside of the rotor. The rotor includes a shaft extending along the motor axis, a rotor core surrounding the shaft from radially outside, a plate-shaped end plate at an axial end portion of the rotor core, and a cover portion at the axial end portion of the rotor core with the end plate intervening between the cover portion and the rotor core. The end plate includes a plate through hole extending in an axial direction, a first recessed portion extending radially inward from the plate through hole, and a second recessed portion extending radially outward from the plate through hole. The first recessed portion opens radially inward in the end plate. The first recessed portion includes an axially-facing opening covered with the rotor core. The second recessed portion includes an axially-facing opening including a covered portion covered with the cover portion, and an open portion not covered with the cover portion.
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