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公开(公告)号：US20240364192A1
公开(公告)日：2024-10-31
申请号：US18641559
申请日：2024-04-22
发明人： Makoto KITAHARA , Masaki SUGIYAMA
CPC分类号： H02K15/03 , H02K15/12 , H02K2201/09
摘要： A method for manufacturing a rotor includes, with a magnet accommodated in a magnet housing hole of a rotor core, causing a first die to contact a first end face of the rotor core and causing a second die to contact a second end face of the rotor core. The method also includes injecting the thermoplastic into the magnet housing hole through a passage of the second die in a state in which the first die and the second die are respectively in contact with the first end face and the second end face and the first die is heated.
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公开(公告)号：US20240356407A1
公开(公告)日：2024-10-24
申请号：US18760045
申请日：2024-07-01
发明人： Shun NAKAYAMA , Yuji SASAKI , Yoshihito KATSU , Koji SAKOTA , Yoshikazu MINEDA
CPC分类号： H02K7/04 , F04D25/06 , F04D29/284 , H02K1/278 , H02K1/30 , H02K15/03 , H02K15/165 , F02M35/10
摘要： A rotor includes a shaft, a magnet located around the shaft, an inner sleeve located around the shaft and between the shaft and the magnet, and an end ring located around the inner sleeve and positioned adjacent to the magnet. The inner sleeve includes a holding portion having an inner diameter that surrounds and holds the shaft, and a gap forming portion including a first inner diameter that is larger than the inner diameter of the holding portion, such that the gap forming portion is spaced apart from the shaft. A part of the magnet is located on the holding portion. The end ring is located on the gap forming portion.
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公开(公告)号：US12126230B2
公开(公告)日：2024-10-22
申请号：US18038149
申请日：2021-11-15
发明人： Carsten Schuh , Thomas Soller , Rolf Vollmer
CPC分类号： H02K15/12 , B22F3/1021 , B22F10/10 , B33Y10/00 , B33Y80/00 , H02K1/276 , H02K1/28 , H02K15/03 , B22F2301/35
摘要： In a method for producing a material layer with a recess, a first suspension containing a binder is applied through a first opening in a first template and a second suspension containing a binder and solid particles is applied through a second opening in a second template. The first opening in the first template is completely contained within the second opening in the second template such that the second suspension completely surrounds the first suspension to produce a green body. The green body containing the first and second suspensions is sintered such that the first suspension is evaporated to provide the recess and permanent cohesion of the solid particles in the second suspension is achieved.
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公开(公告)号：US12119713B2
公开(公告)日：2024-10-15
申请号：US17769213
申请日：2020-12-24
申请人： AISIN CORPORATION
发明人： Shinya Osuka
摘要： A first shaft member of a shaft included in this rotor includes: a first large-diameter portion disposed radially inward of a rotor core; and a first small-diameter portion disposed on a first axial side relative to the rotor core. The first small-diameter portion is provided with a driving force transmitter to transmit a driving force, which is transmitted thereto from the rotor core, to a driving force transmission member. A portion of the first shaft member located on a second axial side is connected to a second shaft member of the shaft.
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公开(公告)号：US20240296994A1
公开(公告)日：2024-09-05
申请号：US18574694
申请日：2022-06-24
申请人： RENAULT S.A.S , WHYLOT
CPC分类号： H01F41/0286 , H02K15/03
摘要： A method for manufacturing an element having magnetic poles, includes:—supplying a magnetization block including a first main face and a second main face between them delimiting a magnetization-block thickness;—machining, over just part of the thickness of the magnetization block, a first set of initial slots, starting from the first main face, so that the magnetization block remains in one piece;—pouring a first connecting material into the initial slots;—machining a set of complementary slots, forming continuations of the initial slots of the first set over the entire thickness of the magnetization block, so as to form a plurality of individual magnets separate from one another, the individual magnets being held together by the first connecting material.
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公开(公告)号：US12081084B2
公开(公告)日：2024-09-03
申请号：US17430975
申请日：2020-03-26
申请人： AISIN CORPORATION
发明人： Tomoko Hiramatsu , Akinori Hoshino
CPC分类号： H02K15/03 , H01F41/005 , H01F41/0206 , H01F41/0233 , H02K1/278
摘要： A manufacturing method for a motor core in which a magnet is fixed in a magnet accommodating portion using synthetic resin material includes: a fixing step of fixing the a permanent magnet in the a magnet accommodating portion using a synthetic resin material, wherein the fixing step includes: an injection step of setting a temperature of the synthetic resin material to a first temperature and injecting, with an injection device having a container capable of maintaining the synthetic resin material in the softened state, the softened synthetic resin material into the magnet accommodating portion; and a curing step of raising the temperature of the synthetic resin material injected into the stacked body to a second temperature to cure the synthetic resin material, with the injection device being moved away from the stacked body.
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公开(公告)号：US12081083B2
公开(公告)日：2024-09-03
申请号：US17413025
申请日：2019-10-09
发明人： Martin Lehmann
CPC分类号： H02K15/03 , H02K7/003 , H02K15/0012 , Y10T29/49009
摘要： A rotor for an electric motor includes a shaft having a central portion supporting a laminated core of an electrical sheet material. The central portion is also composed of an electrical sheet material. The ends of the rotor shaft may be formed from a different material than the material of the central portion, and may be connected to the central portion by a force-fitting interference fit and/or a knurled interference fit. An electric motor having such a rotor and a method for producing a such a rotor are provided.
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公开(公告)号：US12068639B2
公开(公告)日：2024-08-20
申请号：US17832315
申请日：2022-06-03
申请人： Black & Decker Inc.
发明人： Changxing Lu , Abraham Sanchez , Tong Zheng , Fulong Liu , Yeli Gu , David J. Smith , Shailesh P. Waikar
IPC分类号： H02K1/30 , H02K1/2733 , H02K7/14 , H02K15/03 , H02K29/00
CPC分类号： H02K1/30 , H02K1/2733 , H02K7/145 , H02K15/03 , H02K29/00
摘要： A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core, stator teeth, and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor. The rotor includes a rotor core having a cylindrical body, a permanent magnet ring mounted on an outer surface of the cylindrical body with no intermediate adhesive therebetween, and metal sleeve securely fitted outside the permanent magnet ring. The metal sleeve includes a flange extending radially inwardly that covers an axial end of the permanent magnet ring and is bonded to the rotor core to secure the permanent magnet ring to the rotor core.
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9.发明公开公开(公告)号：US20240274332A1
公开(公告)日：2024-08-15
申请号：US18568830
申请日：2022-06-13
发明人： Zhiqiang LI , Yongjiang YU , Bin ZHOU , Yunting SU , Wen LI
CPC分类号： H01F1/0577 , B22F3/24 , C22C38/002 , C22C38/005 , H01F41/0253 , H02K1/02 , B22F2003/242 , B22F2003/247 , B22F2003/248 , B22F2301/355 , B22F2998/10 , B22F2999/00 , H02K15/03
摘要： An expandable sintered neodymium-iron-boron magnet, a preparation method, and an application are provided. The magnet has a sintered neodymium-iron-boron magnet and an expandable coating coated on the surface of the sintered neodymium-iron-boron magnet. The sintered neodymium-iron-boron magnet coated with the expandable coating is used to replace a conventional assembly method of an epoxy resin adhesive coating magnet and potting resin glue, so that the magnet coated with the expandable coating may be inserted into a magnetic steel groove. The irreversible expansion of the coating itself is used to fix the magnet in the magnetic steel groove. Meanwhile, the use of the expandable coating shortens the assembly time of motors and improves the assembly accuracy of the motors.
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公开(公告)号：US20240270393A1
公开(公告)日：2024-08-15
申请号：US18620885
申请日：2024-03-28
申请人： Archer Aviation Inc.
发明人： Scott GRAVES , Robert Wayne MOORE
IPC分类号： B64D27/24 , B60L15/06 , B60L15/38 , B64C27/54 , B64C29/00 , B64D33/08 , B64D35/02 , F16B2/06 , F16H57/08 , H02K1/27 , H02K1/32 , H02K5/124 , H02K5/20 , H02K7/00 , H02K7/08 , H02K7/116 , H02K9/19 , H02K11/33 , H02K15/03 , H02M7/5395 , H02P21/00 , H02P25/16 , H02P27/06 , H02P27/08
CPC分类号： B64D27/24 , B60L15/06 , B60L15/38 , B64C27/54 , B64C29/0008 , B64C29/0033 , B64D33/08 , B64D35/02 , F16B2/06 , F16H57/08 , H02K1/27 , H02K1/32 , H02K5/124 , H02K5/203 , H02K7/08 , H02K7/116 , H02K9/19 , H02K11/33 , H02K15/03 , H02M7/5395 , H02P21/50 , H02P25/16 , H02P27/06 , H02P27/08 , B60L2200/10 , B60L2210/40 , H02K7/006
摘要： An electric propulsion system comprising an electric motor assembly. The electric motor assembly may include a housing having an internal volume, a stator ring disposed about a perimeter of the internal volume, and a rotor positioned within the stator. The electric motor assembly may include a main shaft connected to the rotor via a gear reduction, wherein the main shaft extends through the rotor. The electric motor assembly may include a collar connected to the main shaft, wherein the collar encircles the main shaft, and at least a portion of the collar is configured to direct a fluid away from the main shaft and toward the stator ring.
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