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公开(公告)号：US10439459B2
公开(公告)日：2019-10-08
申请号：US15108357
申请日：2014-02-10
发明人： Toyoaki Udo , Satoru Akutsu , Shusuke Hori , Takanori Ichikawa , Yuji Takizawa
摘要： A rotor core of a rotor includes: a plurality of protrusions formed on at least a step-skew boundary side; and a tubular non-magnetic ring mounted on outer peripheries of a plurality of permanent magnets so as to cover the boundary. The non-magnetic ring includes a plurality of inner diameter bulging portions. Each of the permanent magnets and each of the protrusions are brought into abutment against the corresponding inner diameter bulging portions.
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公开(公告)号：US09923438B2
公开(公告)日：2018-03-20
申请号：US14779445
申请日：2014-03-04
发明人： Shinichi Ito , Sachiko Kawasaki , Yu Hirotani , Masatsugu Nakano , Toyoaki Udo , Hiroyuki Matsuo
IPC分类号： H01F7/06 , H02K15/085 , H02K1/16 , H02K3/12 , H02K15/04
CPC分类号： H02K15/085 , H02K1/165 , H02K3/12 , H02K15/04 , H02K2213/03
摘要： A stator core includes an inner ring core composed of a plurality of teeth arranged in the circumferential direction and a connection portion connecting inner circumferential portions of the plurality of teeth; and an outer ring core to be joined to an outer circumferential surface of the inner ring core. Slots of the stator core each have a circumferential direction width (a) on an inner circumference side smaller than a circumferential direction width (b) on an outer circumference side. A stator coil composed of conductive coils including a plurality of slot accommodated portions and a plurality of coil end portions connecting the slot accommodated portions is inserted and placed in the slots from an outer side in the radial direction of the inner ring core.
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公开(公告)号：US11840290B2
公开(公告)日：2023-12-12
申请号：US16496653
申请日：2017-04-04
发明人： Yoshihiko Onishi , Toyoaki Udo
CPC分类号： B62D5/04 , H02K5/1732 , H02K7/083 , H02K9/227 , H02K11/225 , H02K11/33 , H02K24/00
摘要： In an electric power steering device in which a control unit and a motor are integrated, when the control unit is housed in a case, although a frame, by which the motor and the control unit are compartmentalized, is required, there have been problems in that the case is deformed by a pressure which influences the case when the frame is provided, and a position accuracy of a shaft center of a rotation shaft of the motor is worsened. Therefore, in order to reduce a deformation of the case, a step portion is provided at an inner wall surface of the case and the frame is contacted to the step portion, and moreover, a connecting portion is provided between an outer circumference portion of the frame and an inner circumference portion of the case, whereby a movement of the frame is restrained.
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公开(公告)号：US10177611B2
公开(公告)日：2019-01-08
申请号：US14906874
申请日：2014-02-26
发明人： Sachiko Kawasaki , Atsushi Sakaue , Hisashi Namura , Shinichi Ito , Satoru Akutsu , Masatsugu Nakano , Toyoaki Udo
摘要： A stator core for a rotating electrical machine includes an annular yoke portion; a tooth group fitted to an inner side of the yoke portion and formed such that both ends in a circumferential direction on an inner circumferential side of adjacent teeth are integrally connected with each other by a thin connection portion; and a slot for accommodating a stator winding. The yoke portion has grooves at regular intervals in an inner circumferential surface thereof and extending in an axial direction of the stator, the grooves each having a V shape such that a cross section thereof perpendicular to the axial direction opens toward an inner side of the stator core. Each tooth has, at an outer-circumferential-side end thereof, a fitting portion whose cross section perpendicular to the axial direction is formed in a wedge shape so as to allow the tooth to be fitted along the corresponding groove.
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公开(公告)号：US10199895B2
公开(公告)日：2019-02-05
申请号：US14652865
申请日：2013-04-09
发明人： Yu Hirotani , Minako Iefuji , Yuji Takizawa , Sachiko Kawasaki , Masatsugu Nakano , Toyoaki Udo , Satoru Akutsu
IPC分类号： H02K3/28 , H02K1/27 , H02K1/16 , H02K7/14 , H02K11/00 , H02K29/03 , H02K29/08 , H02K11/215 , H02K11/33
摘要： To obtain a permanent magnet type motor capable of securing controllability of a motor and utilizing reluctance torque. An armature winding is a plurality of sets of polyphase windings; the plurality of sets of the armature winding is supplied with current from each individual inverter; the rotor core is provided with permanent magnets on a surface portion thereof, the permanent magnets being circumferentially arranged and the adjacent permanent magnets having polarities opposite to each other; a protrusion portion is provided between the adjacent permanent magnets, the protrusion portion being provided in a protruding condition from the rotor core and being made of a magnetic substance; and a non-magnetic gap portion is interposed between the protrusion portion and the permanent magnet in a rotating shaft direction.
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公开(公告)号：US09985507B2
公开(公告)日：2018-05-29
申请号：US14758298
申请日：2013-04-22
发明人： Masatsugu Nakano , Yu Hirotani , Satoru Akutsu , Toyoaki Udo , Yuji Takizawa
IPC分类号： H02K1/27 , H02K29/03 , H02K3/12 , H02K3/28 , B62D5/04 , H02P25/22 , H02P6/10 , H02K21/14 , H02K11/33
CPC分类号： H02K29/03 , B62D5/0424 , H02K1/2773 , H02K1/278 , H02K3/12 , H02K3/28 , H02K11/33 , H02K21/14 , H02K2201/06 , H02K2213/03 , H02P6/10 , H02P25/22
摘要： To provide a permanent magnet type motor having reduced torque ripple, in which torque ripples for electric angle sixth order and twelfth order are both reduced with a small skew angle.Driving is performed such that phases of currents flowing in two sets of three-phase armature windings 26-1 and 26-2 are different from each other by 20 degrees to 40 degrees in electric angle. A rotor 11 is composed of m stages of rotor component units arranged in the axial direction. The m stages of rotor component units are skewed to have a stage-skew structure such that a skew angle θ (unit: degree) between the adjacent units satisfies 26/m≤θ≤43.2/m (m is an integer equal to or greater than 2) in electric angle.
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公开(公告)号：US10177637B2
公开(公告)日：2019-01-08
申请号：US15104298
申请日：2014-02-17
发明人： Yuji Takizawa , Shusuke Hori , Takanori Ichikawa , Toyoaki Udo , Satoru Akutsu
摘要： In a permanent magnet motor, projections each include a second projecting portion and a first projecting portion separated away from a side surface of a permanent magnet. When the first projecting portion has a total length L1 in an axial line direction and a height t1, and when the second projecting portion has a total length L2 in the axial line direction and a height t2, (L1×t1)>(L2×t2) is satisfied. As a result, the permanent magnet motor capable of reducing vibration noise of the motor by reducing irregular rotation, reducing decrease in motor torque, and further reducing increase in motor physical size can be obtained.
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8.发明申请MULTIPLEX MULTIPHASE WINDING AC MOTOR AND ELECTRIC POWER STEERING APPARATUS 审中-公开多功能多相绕组交流电动机和电动转向装置公开(公告)号：US20150280502A1
公开(公告)日：2015-10-01
申请号：US14433783
申请日：2013-03-08
发明人： Yu Hirotani , Yuji Takizawa , Masatsugu Nakano , Satoru Akutsu , Toyoaki Udo
摘要： A multiplex multiphase winding AC motor includes an armature iron core provided with a plurality of teeth and a plurality of slots, an armature winding provided with two or more groups of multiphase windings that are wound around the teeth and are contained in the slots, a plurality of motor driving apparatuses independently connected with the two or more groups of multiphase windings, and a magnetic-field-pole iron core provided with a plurality of magnetic-field poles arranged in such a way as to face the armature iron core through a gap; in the magnetic-field-pole iron core, a plurality of magnetic resistance elements for impeding a magnetic-flux flow in the circumferential direction thereof are formed.
摘要翻译： 多路复用多相绕组交流电动机包括设置有多个齿和多个槽的电枢铁芯，设置有缠绕在齿上并被容纳在槽中的两组或更多组多相绕组的电枢绕组，多个 与两组以上的多相绕组独立地连接的电动机驱动装置，以及设置有多个磁场极的磁场极铁芯，其以通过间隙面向电枢铁芯的方式配置; 在磁场极铁芯中形成有用于阻止其周向上的磁通流的多个磁阻元件。
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公开(公告)号：US11952054B2
公开(公告)日：2024-04-09
申请号：US16969253
申请日：2018-05-22
发明人： Yoshihito Asao , Yoshihiko Onishi , Toyoaki Udo
IPC分类号： B62D5/04
CPC分类号： B62D5/0406 , B62D5/0424
摘要： There is provided an electric power steering apparatus in which at least one of a motor housing and a control unit has a respiratory apparatus that performs a respiratory action, based on an inner pressure change in at least one of the motor housing and the control unit.
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公开(公告)号：US11316398B2
公开(公告)日：2022-04-26
申请号：US16489171
申请日：2017-03-30
发明人： Toyoaki Udo , Zhishuai Gao
摘要： Provided is a terminal device for a rotary electric machine, in which a plurality of conductive members, each having a first connecting portion having a flat plate shape, are provided to a base made of an insulating material. Each of a plurality of connection terminals has a second connecting portion having a flat plate shape. The second connecting portion is connected to a corresponding one of the first connecting portions. After a processed connecting portion being at least any one of the first connecting portion and the second connecting portion is formed through press-working performed for a conductive flat plate, compression processing is performed for a front surface and a back surface at both ends of the processed connecting portion in a width direction of the processed connecting portion.
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