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公开(公告)号：US10666111B2
公开(公告)日：2020-05-26
申请号：US15553598
申请日：2015-04-27
Applicant: Mitsubishi Electric Corporation
Inventor： Naoki Ohashi , Shoichiro Nishitani , Keisuke Murase , Akihiro Yamamura
Abstract: This invention is concerning a rotary electric machine 1, this electric motor 1 being provided with an inner cylinder 2, a rotor 3 provided so as to be rotatable inside the inner cylinder 2, a stator 4 fixed to the inner cylinder 2 and separated via a gap from an outer periphery of the rotor 3, and an outer cylinder 8 that covers an entire periphery of the inner cylinder 2 and forms a space 15, which serves as a coolant passage, in conjunction with the inner cylinder 2, wherein both ends of the inner cylinder 2 and the outer cylinder 8 in an axial direction are fixed to each other by cylinder welding portions 9 formed by welding. Accordingly, a rotary electric machine that is small and light can be obtained at low cost.
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公开(公告)号：US09705374B2
公开(公告)日：2017-07-11
申请号：US15307286
申请日：2015-04-28
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Tatsuro Hino , Akihiro Yamamura , Shuichi Tamura , Akira Hashimoto , Tetsuya Yokogawa , Atsushi Sakaue , Kazunori Muto
CPC classification number: H02K3/345 , H02K3/12 , H02K3/38 , H02K15/105
Abstract: A radially outer insulating paper includes: an annular radially outer insulating paper base portion that is disposed on a radially inner side of a row of first coil terminals; and radially outer insulating paper protruding portions that each protrude radially outward from an axially outer end portion of the radially outer insulating paper base portion, and that are inserted between adjacent first coil terminals axially further outward than second bent portions; and a radially inner insulating paper includes: an annular radially inner insulating paper base portion that is disposed on a radially outer side of a row of second coil terminals; and radially inner insulating paper protruding portions that each protrude radially inward from an axially outer end portion of the radially inner insulating paper base portion, and that are inserted between adjacent second coil terminals axially further outward than fourth bent portions.
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公开(公告)号：US20140265699A1
公开(公告)日：2014-09-18
申请号：US14237212
申请日：2012-09-20
Applicant: Mitsubishi Electric Corporation
Inventor： Akihiko Morikawa , Kazuhisa Takashima , Toshihiro Matsunaga , Masayuki Miyaoka , Akihiro Yamamura , Hiroki Maeda
IPC: H02K1/28
Abstract: The hole diameter of a shaft through hole formed in the rotor core is changed in the axial direction, thereby forming a concave portion whose hole diameter is large and a convex portion whose hole diameter is small in the inner circumferential surface of the shaft through hole; the convex portion is arranged at opening portions on both ends of the shaft through hole; a shaft having ridge-shaped convex portions on a press-fitting portion is press-fitted into the shaft through hole to assemble; the number of points of the concave portion is equal to or more than two; and respective diameter dimensions of the concave portion, the convex portion, and the shaft are set to be the diameter of a main body of the shaft
Abstract translation: 形成在转子铁心中的轴通孔的孔径沿轴向改变，从而在轴通孔的内周面形成孔径大的凹部和孔径小的凸部， 所述凸部设置在所述轴贯通孔的两端的开口部; 在压配合部分上具有脊形凸部的轴被压配合到轴通孔中以进行组装; 凹部的点数等于或大于2; 并且凹部，凸部和轴的各自的直径尺寸被设定为轴的主体的直径<凸部的直径<轴的脊形凸部的直径< 凹部的直径。
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公开(公告)号：US10075036B2
公开(公告)日：2018-09-11
申请号：US14237212
申请日：2012-09-20
Applicant: Mitsubishi Electric Corporation
Inventor： Akihiko Morikawa , Kazuhisa Takashima , Toshihiro Matsunaga , Masayuki Miyaoka , Akihiro Yamamura , Hiroki Maeda
Abstract: The hole diameter of a shaft through hole formed in the rotor core is changed in the axial direction, thereby forming a concave portion whose hole diameter is large and a convex portion whose hole diameter is small in the inner circumferential surface of the shaft through hole; the convex portion is arranged at opening portions on both ends of the shaft through hole; a shaft having ridge-shaped convex portions on a press-fitting portion is press-fitted into the shaft through hole to assemble; the number of points of the concave portion is equal to or more than two; and respective diameter dimensions of the concave portion, the convex portion, and the shaft are set to be the diameter of a main body of the shaft
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公开(公告)号：US10063118B2
公开(公告)日：2018-08-28
申请号：US14782959
申请日：2013-04-08
Applicant: Mitsubishi Electric Corporation
Inventor： Shinichiro Yoshida , Michiya Yasui , Toshiyuki Sugai , Shuichi Tamura , Yuki Yamamoto , Masaya Inoue , Akihiro Yamamura
CPC classification number: H02K3/28 , H02K3/18 , H02K3/325 , H02K3/48 , H02K3/522 , H02K5/08 , H02K5/225 , H02K15/12 , H02K2203/12
Abstract: The rotary electric machine includes concentrated winding coil that is configured by winding a conductor wire around a tooth for multiple laps so as to pass through a concave space that is formed by trunk portions and first and second flange portions of first and second insulators, a crossover points of the conductor wire being formed on a coil end of the concentrated winding coil that is positioned above the first insulator, slot-housed portions of the concentrated winding coil that are positioned on two circumferential sides of the tooth being configured such that the conductor wire is arranged in a staggered stacking pattern in multiple rows and in multiple layers, and a varnish being applied to the coil end that is positioned above the first insulator.
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Patent Agency Ranking
公开(公告)号：US10056799B2
公开(公告)日：2018-08-21
申请号：US14911776
申请日：2013-12-19
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Shogo Okamoto , Ken Nishikawa , Masashi Nakamura , Akihiro Yamamura , Kota Hirohashi , Yoshiki Kuwahara
CPC classification number: H02K3/28 , H02K1/12 , H02K3/18 , H02K3/34 , H02K3/522 , H02K11/0094 , H02K2203/09
Abstract: A coil group 23G is composed of windings 23U to 23W for U phase, V phase, and W phase. One ends 23U1 to 23W1 of the windings for the respective phases composing the coil group 23G are connected to respective power supply bus bars 25U to 25W, and the other ends 23U2 and 23W2 of the windings for the phases positioned at both ends in the circumferential direction in the coil group 23G extend toward the other end 23V2 of the winding for the rest of the phases, whereby the other ends 23U2 to 23W2 of the windings for the respective phases are mutually connected.
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公开(公告)号：US09960650B2
公开(公告)日：2018-05-01
申请号：US14650335
申请日：2013-04-26
Applicant: Mitsubishi Electric Corporation
Inventor： Koji Tamura , Shuichi Tamura , Akihiro Yamamura , Issei Doi , Hiroyuki Matsuo , Yasukazu Nishimura , Sachiko Kawasaki , Akihiko Mori
CPC classification number: H02K3/12 , H02K1/16 , H02K15/04 , H02K15/0421
Abstract: In an armature coil according to the present invention and, more particularly, in an armature coil including a plurality of coil conductors wound around a plurality of slots which are formed in a stator core and opened on the radially inner side, the circumferential width of the plurality of the coil conductors is formed in a substantially trapezoidal shape which gets narrower toward the radially inner side and the cross-sectional areas of the plurality of the coil conductors in the slot are each substantially the same and the circumferential width thereof is formed narrower as the coil conductor is arranged toward the radially inner side; and one coil conductor is formed in a convex shape and another coil conductor is formed in a concave shape along the convex shape.
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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
Applicant: Mitsubishi Electric Corporation
Inventor： Koji Tamura , Shuichi Tamura , Akihiro Yamamura , Issei Doi , Hiroyuki Matsuo , Yasukazu Nishimura , Sachiko Kawasaki , Akihiko Mori
Abstract: 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：US10576690B2
公开(公告)日：2020-03-03
申请号：US15501728
申请日：2015-10-22
Applicant: Mitsubishi Electric Corporation
Inventor： Yoshiki Kuwahara , Ryuichi Kitora , Akihiro Yamamura , Shogo Okamoto , Masashi Nakamura , Shinichiro Yoshida
IPC: H02K11/00 , B29C65/08 , H02K3/38 , H02K3/50 , H02K15/04 , B29C65/34 , B29C65/00 , H02K1/12 , H02K15/02 , B29K701/12 , B29K705/00 , B29L31/00
Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.
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公开(公告)号：US10333360B2
公开(公告)日：2019-06-25
申请号：US14785209
申请日：2013-09-24
Applicant: Mitsubishi Electric Corporation
Inventor： Tatsuro Hino , Akira Hashimoto , Masaya Inoue , Akihiro Yamamura , Shogo Okamoto , Atsushi Sakaue , Hironori Tsuiki
Abstract: An iron core member has: first divided yoke portions; second divided yoke portions alternately arranged with the first divided yoke portions; a first tooth portion extending from one circumferential end of each first divided yoke portion, a second tooth portion extending from the other circumferential end; a third tooth portion extending from one circumferential end of the second divided yoke portion on the second tooth portion side, and a fourth tooth portion extending from the other circumferential end. A tooth end portion of the first tooth portion and a tooth end portion of the adjacent fourth tooth portion are integrally joined at a first tooth end joint portion, and a tooth end portion of the second tooth portion and a tooth end portion of the adjacent third tooth portion are integrally joined at a second tooth end joint portion, thereby providing one continuous sheet of the core member.
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