公开(公告)号：US08371021B2

公开(公告)日：2013-02-12

申请号：US12680869

申请日：2009-05-20

申请人： Fumitoshi Yamashita ,  Kiyomi Kawamura ,  Yukihiro Okada ,  Hiroshi Murakami

发明人： Fumitoshi Yamashita ,  Kiyomi Kawamura ,  Yukihiro Okada ,  Hiroshi Murakami

IPC分类号： H01F7/06 ,  B22D27/02

CPC分类号： H02K15/03 ,  H01F1/0578 ,  H01F1/059 ,  H01F41/028 ,  H02K1/278 ,  Y10T29/49009 ,  Y10T29/49069 ,  Y10T29/49075 ,  Y10T29/49078 ,  Y10T29/49803 ,  Y10T29/49805

摘要： A process of manufacturing segments, an anisotropic direction of which is continuously changed in a plane vertically by a uniform magnetic field maintained in a constant direction and a process of arranging a plurality of segments on a circumference, extruding the segments in a ring shape by rheology based on the viscous deformation of the segments, from one thrust-direction end surface of the segments, and subsequently compressing the segments from both thrust-direction end surfaces of the segments are necessarily included. A ring magnet, anisotropy of which is controlled in a continuous direction, is provided, and a source for generating a static magnetic field has energy density (BH) max≧160 to 180 kJ/m3.

摘要翻译： 一种制造段的方法，其各向异性方向通过保持恒定方向的均匀磁场在垂直方向上连续变化，以及在圆周上布置多个段的过程，通过流变学将段挤出成环形 基于段的粘性变形，从段的一个推力方向端面，随后从段的两个推力方向端面压缩段必然包括。 提供了一种连续方向控制其各向异性的环形磁体，并且用于产生静态磁场的源的能量密度（BH）max≥160-180kJ/ m3。

公开(公告)号：US08329056B2

公开(公告)日：2012-12-11

申请号：US12853601

申请日：2010-08-10

申请人： Fumitoshi Yamashita ,  Osamu Yamada ,  Shiho Ohya

发明人： Fumitoshi Yamashita ,  Osamu Yamada ,  Shiho Ohya

IPC分类号： H01F1/08

CPC分类号： H01F1/0578 ,  H01F1/059 ,  H01F7/02 ,  H01F41/0266 ,  H01F41/028

摘要： Anisotropic rare earth-iron based resin bonded magnet comprises: [1] a continuous phase including: (1) a spherical Sm2Fe17N3 based magnetic material covered with epoxy oligomer where its average particle size is 1 to 10 μm, its average aspect ratio ARave is 0.8 or more, and mechanical milling is not applied after Sm—Fe alloy is nitrided; (2) a linear polymer with active hydrogen group reacting to the oligomer; and (3) additive; and [2] a discontinuous phase being an Nd2Fe14B based magnetic material coated with the epoxy oligomer where its average particle size is 50 to 150 μm, and its average aspect ratio ARave is 0.65 or more, further satisfying: [3] the air-gap ratio of a granular compound on the phases is 5% or less; and [4] a composition where crosslinking agent with 10 μm or less is adhered on the granular compound is formed at 50 MPa or less.

摘要翻译： 各向异性稀土 - 铁基树脂粘结磁铁包括：[1]连续相，包括：（1）用环氧低聚物覆盖的球形Sm2Fe17N3系磁性材料，其平均粒径为1〜10μm，平均长径比ARave为0.8 或以上，并且在Sm-Fe合金被氮化之后不施加机械研磨; （2）具有与低聚物反应的活性氢基团的直链聚合物; 和（3）添加剂; 和[2]不连续相是涂覆有环氧低聚物的Nd 2 Fe 14 B基磁性材料，其平均粒度为50〜150μm，其平均长径比Arave为0.65以上，进一步满足：[3]气隙 相上的粒状化合物的比例为5％以下; 和[4]在该粒状化合物上附着有10μm以下的交联剂的组合物形成为50MPa以下。

公开(公告)号：US08269391B2

公开(公告)日：2012-09-18

申请号：US12791467

申请日：2010-06-01

申请人： Fumitoshi Yamashita ,  Shinsaku Nishimura ,  Noboru Menjo

发明人： Fumitoshi Yamashita ,  Shinsaku Nishimura ,  Noboru Menjo

IPC分类号： H02K21/12

CPC分类号： H02K1/2733 ,  H02K1/02 ,  H02K21/125

摘要： A micro rotor is disclosed and includes a plurality of circular or annular plate-shaped thick film magnets which each include an isotropic magnet with a thickness t1 having an in-plane remanence Mr of 0.95 T or more and a coercivity HcJ of 400 kA/m or more and a non-magnetic material with a thickness t2 adapted to isolate two adjacent isotropic magnets where the ratio of t1/t2 is eight or more and which are stacked on one another in multiple layers in the rotation axis direction, wherein at least two pole pairs are provided and a mean magnetic path of in-plane direction having a permeance (B/μoH) of five or more achieved by the magnet alone is provided, whereby eddy current is reduced. Also disclosed are a radial gap type brushless DC motor, a PM stepping motor and an electric generator which incorporate the above described micro rotor.

摘要翻译： 公开了一种微型转子，并且包括多个圆形或环形的板状厚膜磁体，它们各自包括厚度为t1的平行磁体，其平面内剩余量Mr为0.95T以上，矫顽力HcJ为400kA / m 以上的厚度为t2的非磁性材料，其适于隔离两个相邻的各向同性磁体，其中t1 / t2的比率为8以上，并且在旋转轴线方向上以多层彼此堆叠，其中至少两个 提供了极对，并且提供了由磁体单独实现的磁导（B /μoH）为五以上的面内方向的平均磁路，由此涡流减小。 还公开了包括上述微转子的径向间隙型无刷直流电动机，PM步进电动机和发电机。

公开(公告)号：US08069552B2

公开(公告)日：2011-12-06

申请号：US12461509

申请日：2009-08-13

申请人： Fumitoshi Yamashita

发明人： Fumitoshi Yamashita

IPC分类号： H02K15/10

CPC分类号： H01F10/3222 ,  B82Y25/00 ,  H01F1/0579 ,  H01F10/126 ,  H01F41/205 ,  H02K1/02 ,  H02K15/03 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49075 ,  Y10T29/49078

摘要： A method of manufacturing a rotor magnet for a micro rotary electric machine is provided which includes steps of: a process in which a plurality of thick films, each of which is made of nanocomposite texture composed of αFe and R-TM-B where R is either 10 to 20 atomic % Nd or 10 to 20 atomic % Pr, B is 5 to 20 atomic % and TM is either Fe or partly Co-substituted Fe with 0 to 16 atomic %, are formed into a laminated magnet including isotropic nano-crystalline texture which contains αFe and R2TM14B and which has a remanence, Mr, of 0.95 T or more; and a process where the laminated magnet is multi-polar magnetized in-plane of the thick films.

摘要翻译： 提供一种制造用于微型旋转电机的转子磁体的方法，其包括以下步骤：将多个厚膜由αFe和R-TM-B组成的纳米复合材料制成的多个厚膜，其中R为 10至20原子％的Nd或10至20原子％的Pr，B为5至20原子％，TM为Fe或部分Co取代的Fe为0至16原子％，形成为包括各向同性纳米 - 含有αFe和R2TM14B并且具有0.95T以上的剩磁性Mr的晶体结构; 以及层叠磁体在厚膜的面内多极化的工序。

公开(公告)号：US08044547B2

公开(公告)日：2011-10-25

申请号：US12312792

申请日：2007-11-15

申请人： Fumitoshi Yamashita ,  Hiroshi Murakami ,  Yukihiro Okada ,  Kiyomi Kawamura

发明人： Fumitoshi Yamashita ,  Hiroshi Murakami ,  Yukihiro Okada ,  Kiyomi Kawamura

IPC分类号： H02K1/27 ,  H02K15/03

CPC分类号： H02K1/278 ,  H01F1/0578 ,  H01F1/059 ,  H02K15/03 ,  H02K2201/06

摘要： In a radial-direction gap type magnet motor, when an energy density increases, a direction change Mθ/φp of a static magnetic field with respect to a mechanic angle between different poles increases in an exponential manner and thus to decrease a cogging torque of the motor is not compatible to increase a torque density. In order to solve the problem, assuming that φt denotes a mechanic angle of a stator iron core teeth, φp denotes a mechanical angle of a magnetic pole, and Mθ denotes an angle of a static magnetic field with respect to a circumferential tangential line of a radial magnetic pole center, a radial-direction type magnet motor in which φt

摘要翻译： 在径向方向间隙型磁体电动机中，当能量密度增加时，相对于不同极之间的机械角度的静磁场的方向变化M＆amp; php; p以指数方式增加，从而减小齿槽 电机的转矩不相容以增加转矩密度。 为了解决这个问题，假设＆phgr t表示定子铁芯齿的机械角，p表示磁极的机械角度，M表示。 表示相对于径向磁极中心的圆周切线的静磁场的角度，其中＆php; p，M＆amp; thetas的径向方向型磁体电动机; 在磁极中心区域为75〜90°，在＆lt; p×0.1°的磁极端区域满足M＆amp;＆phgr; p＆nlE; 7，并且静态磁场产生源被配置为 提供能量密度（BH）max≥150kJ/ m3的磁各向异性磁极。

公开(公告)号：US07967919B2

公开(公告)日：2011-06-28

申请号：US11597624

申请日：2005-05-26

申请人： Fumitoshi Yamashita

发明人： Fumitoshi Yamashita

IPC分类号： H01F1/053 ,  H01F1/08

CPC分类号： B22F1/0062 ,  B22F1/0096 ,  B22F2003/145 ,  B22F2998/10 ,  C22C1/0441 ,  H01F1/0578 ,  H01F1/059 ,  H01F41/0273 ,  H02K1/02 ,  H02K1/278 ,  H02K15/03 ,  B22F9/04 ,  B22F3/14

摘要： The present invention provides a method for manufacturing a self-organized rare earth-iron bonded magnet, including: a first step of covering a rare earth-iron magnet powder with oligomer or prepolymer in which one molecule includes at least two or more reactive ground substances to provide a surface-treated magnet powder; a second step of melting and kneading stretchable polymer and the surface-treated magnet powder to coarsely crush the resultant material to provide a granule; a third step of dry blending the granule with hardener to provide a compound; a fourth step of compressing the compound under temperature conditions by which the oligomer or prepolymer, the polymer, and the hardener are caused to melt and to flow to provide a green compact; a fifth step of causing the green compact to be a self-organized rare earth-iron bonded magnet by reacting the oligomer or prepolymer, and polymer with the hardener; and a sixth step of stretching the bonded magnet to transform the shape to any of a circular-shape or a circular arc-like shape.

摘要翻译： 本发明提供一种制造自组织稀土铁粘结磁体的方法，包括：第一步骤，用低分子或预聚物覆盖稀土铁磁体粉末，其中一个分子包括至少两个或多个反应性底物 以提供表面处理的磁铁粉末; 将可拉伸聚合物和表面处理的磁铁粉末熔融捏合以粗粉碎所得材料以提供颗粒的第二步骤; 将颗粒与硬化剂干混以提供化合物的第三步骤; 在使低聚物或预聚物，聚合物和硬化剂熔融并流动以提供生坯的温度条件下压缩化合物的第四步骤; 通过使低聚物或预聚物与聚合物与固化剂反应，使生坯成为自组织稀土铁粘结磁体的第五步骤; 以及将粘结磁体拉伸以将形状变形为任何圆形或圆弧状的第六步骤。

公开(公告)号：US20100066192A1

公开(公告)日：2010-03-18

申请号：US12312792

申请日：2007-11-15

申请人： Fumitoshi Yamashita ,  Hiroshi Murakami ,  Yukihiro Okada ,  Kiyomi Kawamura

发明人： Fumitoshi Yamashita ,  Hiroshi Murakami ,  Yukihiro Okada ,  Kiyomi Kawamura

IPC分类号： H02K1/27

CPC分类号： H02K1/278 ,  H01F1/0578 ,  H01F1/059 ,  H02K15/03 ,  H02K2201/06

摘要： In a radial-direction gap type magnet motor, when an energy density increases, a direction change Mθ/φp of a static magnetic field with respect to a mechanic angle between different poles increases in an exponential manner and thus to decrease a cogging torque of the motor is not compatible to increase a torque density. In order to solve the problem, assuming that φt denotes a mechanic angle of a stator iron core teeth, φp denotes a mechanical angle of a magnetic pole, and Mθ denotes an angle of a static magnetic field with respect to a circumferential tangential line of a radial magnetic pole center, a radial-direction type magnet motor in which φt

摘要翻译： 在径向方向间隙型磁体电动机中，当能量密度增加时，相对于不同极之间的机械角度的静磁场的方向变化M＆amp; php; p以指数方式增加，从而减小齿槽 电机的转矩不相容以增加转矩密度。 为了解决这个问题，假设＆phgr t表示定子铁芯齿的机械角，p表示磁极的机械角度，M表示。 表示相对于径向磁极中心的圆周切线的静磁场的角度，其中＆php; p，M＆amp; thetas的径向方向型磁体电动机; 在磁极中心区域为75〜90°，在＆lt; p×0.1°的磁极端区域满足M＆amp;＆phgr; p＆nlE; 7，并且静态磁场产生源被配置为 提供能量密度（BH）max≥150kJ/ m3的磁各向异性磁极。

公开(公告)号：US20100043206A1

公开(公告)日：2010-02-25

申请号：US12461509

申请日：2009-08-13

申请人： Fumitoshi Yamashita

发明人： Fumitoshi Yamashita

IPC分类号： H02K15/03 ,  H01F41/14

CPC分类号： H01F10/3222 ,  B82Y25/00 ,  H01F1/0579 ,  H01F10/126 ,  H01F41/205 ,  H02K1/02 ,  H02K15/03 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49075 ,  Y10T29/49078

摘要： A method of manufacturing a rotor magnet for a micro rotary electric machine is provided which includes steps of: a process in which a plurality of thick films, each of which is made of nanocomposite texture composed of αFe and R-TM-B where R is either 10 to 20 atomic % Nd or 10 to 20 atomic % Pr, B is 5 to 20 atomic % and TM is either Fe or partly Co-substituted Fe with 0 to atomic %, are formed into a laminated magnet including isotropic nano-crystalline texture which contains αFe and R2TM14B and which has a remanence, Mr, of 0.95 T or more; and a process where the laminated magnet is multi-polar magnetized in-plane of the thick films.

摘要翻译： 提供一种制造用于微型旋转电机的转子磁体的方法，其包括以下步骤：将多个厚膜由αFe和R-TM-B组成的纳米复合材料制成的多个厚膜，其中R为 10〜20原子％的Nd或10〜20原子％的Pr，B为5〜20原子％，TM为Fe或部分为Co取代的Fe为0〜原子％，形成为包括各向同性纳米晶 含有αFe和R2TM14B并且具有0.95T以上的剩磁的Mr的纹理; 以及层叠磁体在厚膜的面内多极化的工序。

公开(公告)号：US20070228845A1

公开(公告)日：2007-10-04

申请号：US11597624

申请日：2005-05-26

申请人： Fumitoshi Yamashita

发明人： Fumitoshi Yamashita

IPC分类号： H02K37/10 ,  B22F3/00

CPC分类号： B22F1/0062 ,  B22F1/0096 ,  B22F2003/145 ,  B22F2998/10 ,  C22C1/0441 ,  H01F1/0578 ,  H01F1/059 ,  H01F41/0273 ,  H02K1/02 ,  H02K1/278 ,  H02K15/03 ,  B22F9/04 ,  B22F3/14

摘要： The present invention provides a method for manufacturing a self-organized rare earth-iron bonded magnet, including: a first step of covering a rare earth-iron magnet powder with oligomer or prepolymer in which one molecule includes at least two or more reactive ground substances to provide a surface-treated magnet powder; a second step of melting and kneading stretchable polymer and the surface-treated magnet powder to coarsely crush the resultant material to provide a granule; a third step of dry blending the granule with hardener to provide a compound; a fourth step of compressing the compound under temperature conditions by which the oligomer or prepolymer, the polymer, and the hardener are caused to melt and to flow to provide a green compact; a fifth step of causing the green compact to be a self-organized rare earth-iron bonded magnet by reacting the oligomer or prepolymer, and polymer with the hardener; and a sixth step of stretching the bonded magnet to transform the shape to any of a circular-shape or a circular arc-like shape.

摘要翻译： 本发明提供一种制造自组织稀土铁粘结磁体的方法，包括：第一步骤，用低分子或预聚物覆盖稀土铁磁体粉末，其中一个分子包括至少两个或多个反应性底物 以提供表面处理的磁铁粉末; 将可拉伸聚合物和表面处理的磁铁粉末熔融捏合以粗粉碎所得材料以提供颗粒的第二步骤; 将颗粒与硬化剂干混以提供化合物的第三步骤; 在使低聚物或预聚物，聚合物和硬化剂熔融并流动以提供生坯的温度条件下压缩化合物的第四步骤; 通过使低聚物或预聚物与聚合物与固化剂反应，使生坯成为自组织稀土铁粘结磁体的第五步骤; 以及将粘结磁体拉伸以将形状变形为任何圆形或圆弧状的第六步骤。

公开(公告)号：US06708388B1

公开(公告)日：2004-03-23

申请号：US10088171

申请日：2002-07-10

申请人： Fumitoshi Yamashita ,  Shinji Toda ,  Eiji Uenishi ,  Yuichiro Sasaki

发明人： Fumitoshi Yamashita ,  Shinji Toda ,  Eiji Uenishi ,  Yuichiro Sasaki

IPC分类号： H02K1516

CPC分类号： H02K23/04 ,  H01F13/003 ,  H02K1/02 ,  H02K1/17 ,  H02K15/03 ,  Y10S977/725 ,  Y10S977/775 ,  Y10S977/838 ,  Y10T29/49009 ,  Y10T29/49075

摘要： A permanent magnet field-type compact DC motor having a high output and a low cogging torque is made by fixing a pair of rare earth magnets mainly composed of rare earth-iron-based rapidly quenched and solidified flakes to a soft magnetic frame so as to extend along an inner peripheral surface thereof, and by unsaturation-magnetizing the rare earth magnets so that demagnetization curves at circumferentially opposite end portions of the rare earth magnets are made smaller than a demagnetization curve at a central portion of a magnetic pole of each of the rare earth magnets.

摘要翻译： 通过将主要由稀土 - 铁基快速淬火和固化的薄片组成的一对稀土磁体固定到软磁性框架上来制造具有高输出和低齿槽转矩的永磁场型紧凑型直流电动机，以便 沿其内周面延伸，并且通过使稀土磁体不饱和磁化，使得稀土磁体的周向相对端部的退磁曲线小于每个磁极的磁极的中心部分处的退磁曲线 稀土磁铁。