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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：US20140375161A1
公开(公告)日：2014-12-25
申请号：US14481994
申请日：2014-09-10
Applicant: Nidec Corporation
Inventor： Hidehiro HAGA , Kuniaki ADACHI , Kensuke SHOJI , Takashi HATTORI , Takao ATARASHI , Masato AONO
CPC classification number: H02K3/28 , H02K1/27 , H02K3/18 , H02K3/345 , H02K3/522 , H02K2203/12 , H02K2213/03
Abstract: A stator unit including a coil in which a distance between an m−1-th turn and an m-th turn is wider than each distance in a first turn to the m−1-th turn. The m+1-th turn is disposed between the m−1-th turn and the m-th turn. Further, in a cross-section perpendicular to a central axis and passing a tooth, an angle between a line segment connecting respective centers of the m+1-th turn and the m−1-th turn and a line segment connecting respective centers of the m+1-th turn and the m-th turn is about 120° or more. With this structure, bulging in a circumferential direction of the coil adjacent to an inner peripheral portion of the tooth can be suppressed and a clearance can be secured between adjacent coils such that the number of turns of the coil can be increased.
Abstract translation: 一种定子单元，其包括线圈，其中第m-1圈和第m圈之间的距离比第一回合中的每个距离宽到第m-1圈。 第m + 1转位于第m-1圈和第m转之间。 此外，在垂直于中心轴线并通过齿的横截面中，连接第m + 1匝的各个中心的线段与第m-1匝之间的角度与连接各个中心的线段 第m + 1圈和第m匝约为120°以上。 通过这种结构，可以抑制与齿的内周部分相邻的线圈的圆周方向上的凸起，并且可以确保相邻线圈之间的间隙，从而可以增加线圈的匝数。
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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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公开(公告)号：US20200313494A1
公开(公告)日：2020-10-01
申请号：US16785774
申请日：2020-02-10
Applicant: Nidec Corporation
Inventor： Takashi HATTORI , Yuichi NISHIKAWA , Takao ATARASHI , Yuki HAMADA , Yu KUWAMOTO
IPC: H02K5/10
Abstract: A motor includes a motor body, a housing, a controller, and a cover. The housing includes an annular cover joint that surrounds the controller. The cover joint includes a stepped portion on a side surface of the housing. The stepped portion includes a first surface that faces in the radial direction, and an upward second surface that extends radially from the lower end of the first surface. The cover includes a cylindrical portion radially facing the first surface of the cover joint. An adhesive bonds the first surface of the cover joint and a surface facing the radial direction of the cylindrical portion, and bonds the second surface of the cover joint and an end surface facing the lower side of the cylindrical portion.
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公开(公告)号：US20200153314A1
公开(公告)日：2020-05-14
申请号：US16667978
申请日：2019-10-30
Applicant: Nidec Corporation
Inventor： Shuji IWASAKI , Takao ATARASHI , Takahiro UETANI
IPC: H02K11/215 , H02K7/00
Abstract: A rotor includes a shaft extending along a central axis, a sensor magnet positioned on one axial side of the shaft, a magnet holder that includes a circumferential wall which is open on another axial side and accommodates an end portion on the one axial side of the shaft and the sensor magnet therein, and a support wall positioned on the one axial side of the sensor magnet, the magnet holder being fixed to the shaft, and a filling that fills an inside of the circumferential wall. The sensor magnet is sandwiched between the support wall and the filling in an axial direction.
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Patent Agency Ranking
公开(公告)号：US20200153302A1
公开(公告)日：2020-05-14
申请号：US16667984
申请日：2019-10-30
Applicant: Nidec Corporation
Inventor： Yusaku YOSHIDA , Takao ATARASHI , Chiharu KOBAYASHI , Kentaro SATO
Abstract: A bus bar assembly includes bus bars and a bus bar holder that is made of an insulating material and holds the bus bars in a non-contact state. The bus bars include base portions that overlap with other bus bars in the axial direction, and connecting portions extending from the base portions along the radial direction. At least two of the bus bars include stepped portions extending toward the other bus bars between proximal ends of the connecting portions and connection ends connected to windings. The bus bar holder molds the base portions and the stepped portions in a state where the connection ends are exposed.
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公开(公告)号：US20190341749A1
公开(公告)日：2019-11-07
申请号：US16478490
申请日：2018-01-16
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi SEGUCHI , Shunsuke MURAKAMI , Takao ATARASHI
Abstract: A motor includes a stator including, a rotor to rotate about a central axis extending in a vertical direction, and a first bus bar, a second bus bar, and a third bus bar to which lead wires of the coils are respectively connected. The first bus bar includes a first connecting portion to which two lead wires are connected, the second bus bar includes a second connecting portion to which two lead wires are connected, the third bus bar includes a third connecting portion to which one lead wire is connected and a fourth connecting portion to which one lead wire is connected. The first and second connecting portions are arranged side by side in a circumferential direction, and the third and fourth connecting portions are arranged in the circumferential direction with the first and second connecting portions interposed therebetween.
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公开(公告)号：US20180316239A1
公开(公告)日：2018-11-01
申请号：US15767714
申请日：2016-10-06
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi HATTORI , Takashi SEGUCHI , Shunsuke MURAKAMI , Takao ATARASHI , Yoshiaki YAMASHITA
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 disposed to face the rotor in a radial direction; a bearing that supports the shaft; a bearing holder that holds the bearing; and a housing that accommodates the rotor, the stator, and the bearing holder, and opens to an upper side. The housing includes a controller accommodating region that accommodates at least a portion of a controller electrically connected to the stator on an upper side from the bearing holder. An inner diameter of the housing in the controller accommodating region is larger than an inner diameter of the housing at a position to which the bearing holder is attached. The bearing holder is held on an inner peripheral surface of the housing by interference fitting.
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公开(公告)号：US20180233984A1
公开(公告)日：2018-08-16
申请号：US15750858
申请日：2016-08-09
Applicant: Nidec Corporation
Inventor： Kosuke OGAWA , Takashi HATTORI , Shunsuke MURAKAMI , Takao ATARASHI , Hidehiro HAGA , Yoshiaki YAMASHITA , Takahiro KIZU , Toshiya OKAMOTO
CPC classification number: H02K3/50 , H02K1/16 , H02K3/12 , H02K3/38 , H02K3/52 , H02K3/522 , H02K5/161 , H02K5/1732 , H02K7/083 , H02K2203/06 , H02K2203/09
Abstract: A motor includes a rotor that has a shaft with a central axis extending in a vertical direction as a center, a stator disposed so as to face the rotor in a radial direction, a bearing that supports the shaft, a wire support member disposed above the stator, and a bearing holder disposed above the wire support member to hold the bearing. The stator includes a plurality of teeth, and a plurality of coils provided on the plurality of teeth. The wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires drawn out from the coil, a 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 the conducting member.
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公开(公告)号：US20160294248A1
公开(公告)日：2016-10-06
申请号：US15083626
申请日：2016-03-29
Applicant: Nidec Corporation
Inventor： Takao ATARASHI , Yoshiaki YAMASHITA , Tatsuro KAWAMOTO , Yusaku YOSHIDA , Tomoki IGA
CPC classification number: H02K5/225 , H02K3/522 , H02K5/16 , H02K5/161 , H02K5/22 , H02K7/083 , H02K11/215 , H02K11/33
Abstract: A motor may include a rotor including a shaft; a stator arranged radially outside of the rotor; a bearing arranged on an upper side of the stator; a tubular housing; a bearing holder arranged on the upper side of the stator; and a busbar unit arranged on an upper side of the bearing holder. The rotor may include a rotor magnet fixed to the shaft. The stator may include an annular core back; teeth arranged to extend radially inward from the core back; and coils wound around the teeth. The housing may include a housing inner circumferential surface arranged to hold the stator. The bearing holder may be arranged to be in contact with the housing inner circumferential surface. The busbar unit may be arranged to be in contact with the housing inner circumferential surface.
Abstract translation: 马达可以包括具有轴的转子; 定子，其布置在所述转子的径向外侧; 布置在定子的上侧的轴承; 管状外壳; 轴承座，其布置在所述定子的上侧; 以及布置在所述轴承座的上侧的母线单元。 转子可以包括固定到轴的转子磁体。 定子可包括环形芯背; 布置成从芯背向径向向内延伸的齿; 缠绕在牙齿上的线圈。 壳体可以包括布置成保持定子的壳体内周面。 轴承座可以布置成与壳体内周面接触。 母线单元可以布置成与壳体内周面接触。
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