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公开(公告)号：US11894721B2
公开(公告)日：2024-02-06
申请号：US16976500
申请日：2018-03-26
发明人： Kazuchika Tsuchida , Sachiko Kawasaki , Mitsumasa Hamazaki , Takayuki Onihashi , Yutaka Nomiyama
IPC分类号： H02K1/16 , H02K11/215 , H02K3/12 , H02K3/28 , H02K3/48
CPC分类号： H02K1/165 , H02K3/12 , H02K3/28 , H02K3/48 , H02K11/215
摘要： A stator includes four split cores arranged in the circumferential direction. Each split core includes a yoke including a pair of joint parts, and a tooth. The shape of an end of the tooth is asymmetrical. An angle θ1 (degrees) formed by a side surface of the tooth and a side surface of the yoke on the inner side in the radial direction of the stator satisfies 90 degrees
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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：US10153673B2
公开(公告)日：2018-12-11
申请号：US15119929
申请日：2015-05-08
发明人： Hironori Tsuiki , Hiroyuki Akita , Akira Hashimoto , Koji Kawamura , Sachiko Kawasaki , Atsushi Sakaue
摘要： Bridge portions forming coil end portions, at both ends in an axial direction, of a stator of the rotating electrical machine according to the present invention are configured coaxially about an axis of the stator; at least one bridge portion of the bridge portions of each coil at both ends in the axial direction is located outward of an inner peripheral surface of the stator; and a gap is present between an end surface of a stator core in the axial direction and each bridge portion.
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公开(公告)号：US10418866B2
公开(公告)日：2019-09-17
申请号：US14768316
申请日：2013-05-31
发明人： Yu Hirotani , Yuji Takizawa , Sachiko Kawasaki , Masatsugu Nakano , Toyoaki Udo , Satoru Akutsu
摘要： A multiple-polyphase AC dynamo-electric machine, wherein each of the plurality of the teeth provides the flange part to the NS magnetic pole part of the rotor side end part, the stator core has a magnetic connection part which connects the flange parts adjoined each other in the NS magnetic pole of each of the plurality of teeth, the connection part is provided corresponding to each of the slot and an inner peripheral side of the corresponding slot, the radial width of the connection part are smaller than both of the circumferential width of the teeth, thereby the radial widths of the connecting sections are smaller than both the circumferential widths of the teeth and the radial widths of the flanges, voltages generated when the magnetic flux generated by current flowing through one group of windings links with the windings in another group are suppressed effectively.
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公开(公告)号：US11316395B2
公开(公告)日：2022-04-26
申请号：US16421600
申请日：2019-05-24
发明人： Koji Tamura , Shuichi Tamura , Akihiro Yamamura , Issei Doi , Hiroyuki Matsuo , Yasukazu Nishimura , Sachiko Kawasaki , Akihiko Mori
摘要： A method of manufacturing an armature coil includes steps of arranging a plurality of coil conductors of the armature coil between an end metal die and a back portion metal die on a lower metal die; pressing, with the upper metal die in a pressing direction, the plurality of the coil conductors arranged between the end metal die and the back portion metal die on the lower metal die; and removing coil conductors that become formed in a convex shape and a concave shape from the lower metal die. The upper metal die may be provided with an inclined portion on a lower metal die side of the upper metal die, and the upper metal die may be configured to be pressed such that a space is formed by the dies, the space having a width that gets gradually narrower.
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公开(公告)号：US10432070B2
公开(公告)日：2019-10-01
申请号：US15547966
申请日：2016-01-18
IPC分类号： H02K15/03 , H02K3/28 , B66B11/04 , H02K5/173 , H02K21/14 , H02K11/225 , H02K1/16 , H02K3/493
摘要： A rotating electric machine includes: a stator having an armature core having slots formed between magnetic pole teeth, and a plurality of coils each of which is wound so as to straddle a plurality of the magnetic pole teeth; and a rotor including a plurality of permanent magnets disposed at certain intervals on an outer peripheral surface of the magnetic yoke, and the coils include an armature coil for driving the rotating electric machine and a non-armature coil for magnetizing or demagnetizing the permanent magnets of the rotor.
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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：US11095173B2
公开(公告)日：2021-08-17
申请号：US16072663
申请日：2017-02-22
发明人： Koji Kawamura , Akira Hashimoto , Hiroyuki Akita , Sachiko Kawasaki , Naohiro Motoishi , Takatoshi Masuda
摘要： A stator core of a rotary electric machine includes: an outer core that is an annular back yoke portion; and an inner core in which a plurality of teeth are radially arranged and inner side end portions of the teeth adjacent to each other in a circumferential direction are connected to each other in the circumferential direction by connection portions and which is fitted to an inner side of the outer core, each connection portion has a hole penetrating in an axial direction, each connection portion is split into a plurality of sections by the hole, a width in a radial direction of the one connection portion at a portion of the connection portion that has a smallest width in the radial direction is equal to or greater than ¼ and less than ½ of a sheet thickness of each of sheets.
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公开(公告)号：US10404115B2
公开(公告)日：2019-09-03
申请号：US15038851
申请日：2014-12-15
发明人： Sachiko Kawasaki , Kimiyasu Furusawa , Atsushi Sakaue , Akira Hashimoto , Hiroyuki Akita , Moriyuki Hazeyama , Masaya Inoue , Shinji Nishimura
摘要： A contour line on the outer circumferential side of each magnet hole in the first layer is formed to be an arc passing through a total of three intersections, i.e., an intersection of a d axis and a reference magnetic flux line which is a magnetic flux line as a reference positioned inward by a predetermined number of magnetic flux lines from the outer circumferential edge of a rotor core, and intersections of: the reference magnetic flux line; and sides at the circumferential ends of the magnet hole which are positioned inward by a bridge dimension from the outer circumferential edge of the rotor core. Thus, a rotary electric machine that enables maximum utilization of reluctance torque and magnet torque and suppression of torque ripple can be obtained with simple processing and low cost.
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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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