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公开(公告)号：US11114923B2
公开(公告)日：2021-09-07
申请号：US16566256
申请日：2019-09-10
发明人： Yuiki Goto , Daisuke Mizushima , Yasuyuki Hirao , Hiroaki Takeda , Sho Yasuda
摘要： A bending-forming jig used in bending and forming a protruding portion of a leg portion of a U-shaped conductor toward a circumferential direction, the protruding portion protruding from an axial end surface of a stator core, the bending-forming jig including a ring portion and a claw portion, the claw portion including a first abutting surface that rises from an axial end surface of the ring portion with the surface directed in the circumferential direction and abuts against a tip portion of the protruding portion from the circumferential direction, and a projecting portion that projects, at a tip end of the claw portion, in the circumferential direction from the abutting surface and abuts against the tip portion of the protruding portion from the axial direction toward the axial end surface of the ring portion.
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公开(公告)号：US20160134163A1
公开(公告)日：2016-05-12
申请号：US14820988
申请日：2015-08-07
发明人： Ippei HAMANAKA , Yasuyuki Hirao , Yasuo Kinoshita
CPC分类号： H02K1/2766 , H02K1/246
摘要： In a rotor structure including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves. The non-magnetic bridge is formed with a chamfer at only one end face of both end faces in an axial direction of the rotor core. The non-magnetic bridge includes two or more non-magnetic bridges. The non-magnetic bridges are arranged so that the end faces formed with the chamfers are alternately located at the one end face of the rotor core.
摘要翻译： 一种转子结构，包括形成在转子芯中的防漏孔，以防止磁通量从永久磁铁泄漏; 形成在防漏孔的外周侧内壁的外周侧燕尾槽，与内周侧燕尾槽相对的内周侧燕尾槽， 防漏孔侧面内壁; 以及具有可与燕尾槽接合的两个端部的非磁性桥。 非磁性桥在转子芯的轴向的两端面的仅一个端面上形成倒角。 非磁性桥包括两个或多个非磁性桥。 非磁性桥被布置成使得形成有倒角的端面交替地位于转子芯的一个端面。
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公开(公告)号：US11196313B2
公开(公告)日：2021-12-07
申请号：US16516678
申请日：2019-07-19
发明人： Yasuyuki Hirao , Daisuke Mizushima , Hiroaki Takeda , Sho Yasuda
IPC分类号： H02K3/12 , H02K15/085 , H02K15/04 , H02K15/00
摘要： Provided is a stator manufacturing method including: inserting a plurality of segment coils into a plurality of slots formed in a stator core; bending arms of the segment coils that protrude from the stator core, in a circumferential direction of the stator core; before or after bending the segment coils in the circumferential direction, directing parallel to each other leading end portions of the segment coils that are adjacent to each other in a radial direction of the stator core; and welding together the leading end portions of the segment coils with the leading end portions directed parallel to each other.
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公开(公告)号：US10163551B2
公开(公告)日：2018-12-25
申请号：US15155484
申请日：2016-05-16
发明人： Yasuyuki Hirao , Hideki Manabe
摘要： A method of manufacturing a coated conducting wire assembly includes forming a conducting wire assembly by twist-deforming a conducting wire bundle, forming a coated conducting wire assembly by covering the conducting wire assembly with an insulation coating, and annealing the coated conducting wire assembly. The conducting wire bundle is formed by bundling a plurality of conducting wires. The conducting wire assembly includes a parallel portion, a left-wound portion, and a right-wound portion. The annealing is performed by heating and holding the coated conducting wire assembly at an annealing temperature while applying tension to the covered conducting wire assembly.
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公开(公告)号：US09806570B2
公开(公告)日：2017-10-31
申请号：US14820988
申请日：2015-08-07
发明人： Ippei Hamanaka , Yasuyuki Hirao , Yasuo Kinoshita
CPC分类号： H02K1/2766 , H02K1/246
摘要： In a rotor structure including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves. The non-magnetic bridge is formed with a chamfer at only one end face of both end faces in an axial direction of the rotor core. The non-magnetic bridge includes two or more non-magnetic bridges. The non-magnetic bridges are arranged so that the end faces formed with the chamfers are alternately located at the one end face of the rotor core.
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公开(公告)号：US11387718B2
公开(公告)日：2022-07-12
申请号：US16580391
申请日：2019-09-24
IPC分类号： H02K15/00 , H01F41/12 , B23K26/16 , B23K26/142 , B23K26/359 , B23K101/38 , B23K101/42 , H05K1/11 , H01F41/10
摘要： A method of removing an insulating coating layer of coil wiring includes: a fragmentation step in which a line-shaped region of the insulating coating layer, which separates a removal-planned portion and a remain-planned portion of the insulating coating layer, is removed; a laser irradiation step in which laser light which transmits through the insulating coating layer but which is absorbed by a coil wiring is irradiated from a side of an outer surface of the removal-planned portion toward a boundary of the coil wiring with the insulating coating layer, to carbonize a boundary portion between the insulating coating layer and the coil wiring of the removal-planned portion by generation of heat of the coil wiring; and a coating turn-over step in which air is blown onto the removal-planned portion to turn over and blow off the removal-planned portion.
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公开(公告)号：US11251591B2
公开(公告)日：2022-02-15
申请号：US16286794
申请日：2019-02-27
发明人： Ken Shirai , Akihiro Ueda , Yasuyuki Hirao , Toshiro Nakamura , Hiroaki Takeda
IPC分类号： B23K26/06 , H02K15/00 , H02G1/12 , B23K26/082 , B23K26/362 , B23K26/402 , B23K26/0622 , B23K101/34 , B23K103/00 , B23K101/38
摘要： An insulation film peeling method which radiates laser light onto a front end portion of an insulation film-coated conducting wire including a conducting wire and an insulation film in a longitudinal direction, and which peels a part of the insulation film up to a peeling boundary of a predetermined regulated peeling length, includes performing a rectilinear scan of a first region, in which a radiation position of the laser light moves from one side toward the other side and then moves from the other side toward the one side upon reaching the other side, and performing a unidirectional scan of a second region, in which the radiation of the laser light is performed from one side toward the other side and then the radiation position returns to the one side in a state in which the radiation of the laser light stops upon reaching the other side.
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公开(公告)号：US10128728B2
公开(公告)日：2018-11-13
申请号：US14801171
申请日：2015-07-16
发明人： Yasuyuki Hirao
摘要： A manufacturing method for a segment coil according to the invention includes forming an assembled wire by bundling a plurality of element wires, forming a stranded wire by twisting the assembled wire, forming a rectangular conductor by rolling the stranded wire, and forming a segment coil by cutting the rectangular conductor into a given length and bending the cut rectangular conductor. Before the rectangular conductor is bent, the plurality of element wires is fastened at a position where the coil end portion of the segment coil is formed.
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公开(公告)号：US20170117780A1
公开(公告)日：2017-04-27
申请号：US15298343
申请日：2016-10-20
发明人： Yasuyuki Hirao
IPC分类号： H02K15/00 , H02K15/085
CPC分类号： H02K15/0031 , H02K15/0037 , H02K15/0087 , H02K15/085
摘要： A coil end bending jig pushes down a plurality of coil ends of coil segments held by a toric stator core, the plurality of coil ends being arranged on a same circumference. The coil end bending jig includes a plurality of bending units each having a bending tooth that makes contact with a corresponding one of the coil ends, and a guide member having a plurality of guiding slits into which the plurality of bending units is inserted, respectively. The plurality of guiding slits extends from an inner peripheral side of the stator core to an outer peripheral side of the stator core so as not to intersect with each other when viewed from an axial direction of the stator core.
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公开(公告)号：US10951096B2
公开(公告)日：2021-03-16
申请号：US16369391
申请日：2019-03-29
IPC分类号： H02K15/00
摘要： A method of producing a rotating electric machine stator includes an insertion step, bending step, and pressing step. In the insertion step, two leg portions of each U-shaped coil wire of a stator coil are inserted into different slots, such that protruding portions as distal end portions of the leg portions protrude in parallel with an axial direction of the stator core. In the bending step, the protruding portion of a first leg portion is bent in a first circumferential direction of the stator core, at a proximal end portion of the protruding portion as a bending start point, from a condition where the protruding portion protrudes from the slot in parallel with the axial direction of the stator core. In the pressing step, a distal end of the protruding portion bent in the first circumferential direction is pressed toward its proximal end in a second circumferential direction.
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