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1. 发明授权

US11588359B2 Rotating electric machine 有权
公开(公告)号：US11588359B2
公开(公告)日：2023-02-21
申请号：US17196182
申请日：2021-03-09
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Hiroaki Kinouchi , Tomohiro Suetsuna , Naoyuki Sanada , Masaya Hagiwara
IPC分类号： C22C33/00 , H01F1/08 , H02K1/02 , H02K1/14 , H02K21/24 , H02K1/24 , H02K1/2793 , H01F1/055
摘要： A rotating electric machine according to embodiments is a rotating electric machine including a rotor including a first core and being capable of rotating around a rotating shaft; and a stator disposed to face the rotor in the axial direction of the rotating shaft, the first core including a first pressed powder material having a plurality of first flaky magnetic metal particles and a first intercalated phase, the first flaky magnetic metal particles having an average thickness of from 10 nm to 100 μm, each first flaky magnetic metal particle having a first flat surface and a first magnetic metal phase including at least one first element selected from the group consisting of Fe, Co, and Ni, the average value of the ratio of the average length in the first flat surface with respect to the average thickness being from 5 to 10,000, the first intercalated phase existing between the first flaky magnetic metal particles and including at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (F), wherein in the first pressed powder material, the first flat surfaces are oriented approximately in parallel with a first principal plane of the first pressed powder material and have the difference in magnetic permeability on the basis of direction within the first principal plane, and the first principal plane of the first pressed powder material is disposed to be approximately perpendicular to the radial direction of the rotating electric machine.

2. 发明申请

US20230024845A1 IRON NITRIDE POWDER WITH ANISOTROPIC SHAPE 有权
公开(公告)号：US20230024845A1
公开(公告)日：2023-01-26
申请号：US17945203
申请日：2022-09-15
申请人： REGENTS OF THE UNIVERSITY OF MINNESOTA
发明人： Jian-Ping WANG , YanFeng JIANG
IPC分类号： B22F9/04 , C22C33/02 , H01F1/06 , H01F1/08 , B22F1/054 , C01B21/06 , C23C8/26 , H01F41/02
摘要： Techniques are disclosed for milling an iron-containing raw material in the presence of a nitrogen source to generate anisotropically shaped particles that include iron nitride and have an aspect ratio of at least 1.4. Techniques for nitridizing an anisotropic particle including iron, and annealing an anisotropic particle including iron nitride to form at least one α″-Fe16N2 phase domain within the anisotropic particle including iron nitride also are disclosed. In addition, techniques for aligning and joining anisotropic particles to form a bulk material including iron nitride, such as a bulk permanent magnet including at least one α″-Fe16N2 phase domain, are described. Milling apparatuses utilizing elongated bars, an electric field, and a magnetic field also are disclosed.

3. 发明授权

US11421740B2 Encoder wheel for wheel hub assembly 有权
公开(公告)号：US11421740B2
公开(公告)日：2022-08-23
申请号：US16024996
申请日：2018-07-02
申请人： Aktiebolaget SKF
发明人： Luca Tedeschini , Daniele Duch
IPC分类号： G01P3/44 , F16C41/00 , G01P3/487 , F16C33/58 , B60B27/00 , F16C19/18 , H01F1/08
摘要： A speed measuring device for a wheel hub assembly equipped with a rolling bearing. The measuring device having an encoder wheel mounted on a rotating ring of the bearing, a mechanical support disposed between the encoder wheel and the ring to cause the encoder wheel and the ring to be angularly fixed to one another, and a mechanical lock for axially locking the encoder wheel in a seat formed by the mechanical lock together with the mechanical support. The encoder wheel is equipped with a base structure made of plastic material mounted in a seat.

4. 发明申请

US20220246336A1 MANUFACTURING METHOD FOR RARE EARTH MAGNET 有权
公开(公告)号：US20220246336A1
公开(公告)日：2022-08-04
申请号：US17563134
申请日：2021-12-28
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Daisuke ICHIGOZAKI , Noritsugu SAKUMA , Akihito KINOSHITA , Masaaki ITO
IPC分类号： H01F1/059 , H01F1/055 , H01F41/02 , H01F1/08
摘要： There is provided a manufacturing method for a rare earth magnet, including forming a zinc-containing coating film on a surface of a particle of a samarium-iron-nitrogen-based magnetic powder to obtain a coated powder, subjecting the coated powder to compression molding to obtain a compacted powder body, and subjecting the compacted powder body to pressure sintering, in which a coating rate of the coating film with respect to an entire surface of the particle of the coated powder is 96% or more, and the formation of the coating film and the pressure sintering of the compacted powder body is carried out in a vacuum or an inert gas atmosphere, and the compression molding of the coated powder is carried out in the atmospheric air.

5. 发明授权

US11222738B2 Method for manufacturing rare earth magnet 有权
公开(公告)号：US11222738B2
公开(公告)日：2022-01-11
申请号：US16099461
申请日：2016-06-10
申请人： STAR GROUP IND. CO., LTD
发明人： Dong Hwan Kim , Koon Seung Kong
IPC分类号： H01F1/08 , H01F1/057 , H01F41/02 , B22F3/087
摘要： The present invention provides a method for manufacturing a rare-earth magnet, the method comprising the steps of preparing a rare-earth magnet raw material powder including R, Fe and B as composition components (R is one or more elements selected from the rare earth elements including Y and Sc); packing the raw material powder into a molding die, and compacting and molding the raw material powder while applying a magnetic field, wherein, in the compacting and molding step, compacting is performed biaxially, in the directions of X and Y axes, when the magnetic field is applied in the direction of Z axis.

6. 发明授权

US11141788B2 Method for manufacturing single-pole only usable magnet 有权
公开(公告)号：US11141788B2
公开(公告)日：2021-10-12
申请号：US15580406
申请日：2017-06-27
申请人： DAE HAN SPECIAL METAL IND CO., LTD.
发明人： Jun-Bum An
IPC分类号： B22F7/06 , B22F3/16 , H01F1/08 , H01F41/02
摘要： Provided is a method of manufacturing a magnet capable of using only a single pole, whereby a combination force between a permanent (or referred to as a magnet) and a yoke (or referred to as a shielding metal) can be improved without performing a manual bonding work therebetween and then the efficiency of subsequent processes, such as polishing and plating, after combination and completeness of a product can be improved.

7. 发明申请

US20210288534A1 HYBRID ROTOR ASSEMBLY 有权
公开(公告)号：US20210288534A1
公开(公告)日：2021-09-16
申请号：US17303516
申请日：2021-06-01
申请人： Atieva, Inc.
发明人： Emad Dlala
IPC分类号： H02K1/28 , H02K1/26 , H02K1/02 , H01F1/08 , H02K15/03 , H02K17/16 , H02K21/16 , H02K3/04
摘要： A hybrid rotor assembly is provided. The assembly utilizes two different types of magnets within the lamination cavities of the lamination stack: sintered permanent magnets and bonded magnets.

8. 发明授权

US10991493B2 Rare earth magnet 有权
公开(公告)号：US10991493B2
公开(公告)日：2021-04-27
申请号：US15560907
申请日：2016-03-25
申请人： TDK CORPORATION
发明人： Wakako Okawa , Syota Goto , Yoshinori Fujikawa
IPC分类号： H01F1/053 , H01F1/057 , C22C38/00 , H01F1/08 , C22C38/02 , C22C38/06 , C22C38/10 , C22C38/16 , B22F3/16 , B22F3/24 , B22F9/04 , C22C28/00 , C22C30/00 , B22F3/00
摘要： A rare earth magnet includes main phase grains having an R2T14B type crystal structure. The main phase grains include Ga. A concentration ratio A (A=αGa/βGa) of the main phase grains is 1.20 or more, where αGa and βGa are respectively a highest concentration of Ga and a lowest concentration of Ga in one main phase grain.

9. 发明授权

US10923256B2 R-T-B-based sintered magnet and method for producing same 有权
公开(公告)号：US10923256B2
公开(公告)日：2021-02-16
申请号：US15739261
申请日：2016-06-17
申请人： HITACHI METALS, LTD.
发明人： Teppei Satoh , Futoshi Kuniyoshi , Rintaro Ishii , Takeshi Nishiuchi , Noriyuki Nozawa
IPC分类号： H01F1/057 , H01F41/02 , B22F9/04 , B22F3/16 , B22F3/24 , C22C38/00 , H01F1/08 , B22F1/00 , C22C33/02 , B22F3/00 , C22C1/04 , C22C30/02
摘要： To provide an R-T-B based sintered magnet including R: 27.5 to 34.0% by mass, RH: 2 to 10% by mass, B: 0.89 to 0.95% by mass, Ti: 0.1 to 0.2% by mass, Ga: 0.3 to 0.7% by mass, Cu: 0.07 to 0.50% by mass, Al: 0.05 to 0.50% by mass, M (M is Nb and/or Zr): 0 to 0.3% by mass, balance T, and inevitable impurities, the following inequality expressions (1), (2), and (3) being satisfied: [T]−72.3([B]−0.45[Ti])>0 (1) ([T]−72.3([B]−0.45[Ti]))/55.85

10. 发明授权

US10811187B2 Methods of fabricating thermal composites having specifically designed particle distributions 有权
公开(公告)号：US10811187B2
公开(公告)日：2020-10-20
申请号：US16134275
申请日：2018-09-18
申请人： Toyota Motor Engineering & Manufacturing North America, Inc.
发明人： Ercan M. Dede
IPC分类号： H01F41/02 , B29C39/22 , C08J5/24 , B29C39/00 , H02K1/02 , H01F1/08 , B29C39/38 , H02K1/27 , B29K63/00 , B29K509/04
摘要： A method for fabricating a thermal composite includes pouring a mixture including a plurality of magnetically susceptible particles and a thermosetting polymer into a mold, placing the mold containing the mixture in a chamber including a plurality of magnet arrays, and heating the mold containing the mixture in the chamber for a time and at a temperature sufficient to cure the thermosetting polymer. At least one of the plurality of magnet arrays includes a Halbach array.

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