公开(公告)号：US20100219921A1

公开(公告)日：2010-09-02

申请号：US12706389

申请日：2010-02-16

申请人： Fumitoshi YAMASHITA ,  Osamu YAMADA ,  Shiho OHYA

发明人： Fumitoshi YAMASHITA ,  Osamu YAMADA ,  Shiho OHYA

IPC分类号： H01F7/02

CPC分类号： H01F1/0578 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/059 ,  H01F41/0273

摘要： A rare-earth iron-based magnet with self-recoverability is provided and includes a plurality of segments, wherein the segments each include a matrix having a microstructure in which rare-earth iron-based aligned magnetic powders of at least one kind are solidified by a cross-linking reaction phase and also in which the cross-liking reaction phase and a viscous deformation phase resulting from on a viscosity flow are chemically bound to each other between the magnetic powders, and wherein while the inner and outer circumferential surfaces of the segments are constrained, the fracture surfaces of the segments, and also the segments on a needed-basis, are mutually aggregated and rigidified together by taking advantage of self-recovery function based on viscous deformation caused by heat and external force and also on cross-linking reaction.

摘要翻译： 提供了具有自恢复性的稀土类铁基磁体，并且包括多个段，其中各段包括具有微结构的基体，其中至少一种类型的稀土类铁基取向磁性粉末通过 交联反应相，并且其中由粘度流动引起的交叉反应相和粘性变形相在磁粉之间彼此化学结合，并且其中在段的内周面和外周面 受限于，基于需要的段的断裂面以及基于需要的链段通过利用基于由热和外力引起的粘性变形以及交联的自恢复功能相互聚合和硬化在一起 反应。

公开(公告)号：US20110074531A1

公开(公告)日：2011-03-31

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： H01F7/02

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：US20140010955A1

公开(公告)日：2014-01-09

申请号：US13584304

申请日：2012-08-13

申请人： Fumitoshi YAMASHITA ,  Shiho OHYA ,  Shinsaku NISHIMURA

发明人： Fumitoshi YAMASHITA ,  Shiho OHYA ,  Shinsaku NISHIMURA

IPC分类号： H01F41/02

CPC分类号： H01F41/02 ,  C22C33/003 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C38/12 ,  C22C45/02 ,  H01F1/0579

摘要： There is provided a method of producing an α-Fe/R2TM14B-type nanocomposite magnet where R is 9 at. % or more but less than 11.76 at. % of Nd or Pr, TM is Fe or a substance in which a portion of Fe is substituted with Co of 20 at. % or less, and B is 6 to 8 at. %. A relatively long length nanocrystalline ribbon having a coercivity of 600 kA/m or more in which a content of flakes of less than 10 mm in length is 20% or less is coated with a polymeric film and then cut into an intended length, or punched into a specific shape.

摘要翻译： 提供了生产α-Fe / R2TM14B型纳米复合磁体的方法，其中R为9at。 ％以上但小于11.76。 Nd或Pr，TM的％为Fe或其中一部分Fe被Co取代为20的物质。 ％以下，B为6〜8个。 ％。 具有矫顽力为600kA / m以上的相对较长长度的纳米晶带，其中长度小于10mm的薄片的含量为20％或更小，涂覆有聚合物膜，然后切成预期长度，或冲压 变成一个特定的形状。

公开(公告)号：US20120032537A1

公开(公告)日：2012-02-09

申请号：US13277355

申请日：2011-10-20

申请人： Fumitoshi YAMASHITA ,  Hiroshi Murakami ,  Kiyomi Kawamura

发明人： Fumitoshi YAMASHITA ,  Hiroshi Murakami ,  Kiyomi Kawamura

IPC分类号： H02K1/27 ,  B29C31/00

CPC分类号： H01F41/028 ,  H01F1/0578 ,  H01F1/059 ,  H01F1/083 ,  H02K1/27 ,  Y10T29/49076

摘要： To improve tranquility and controllability of an iron core-equipped permanent magnet motor with an improved maximum energy product (BH)max by improving shape compatibility of a radial anisotropic magnet, there is provided a radial anisotropic magnet manufacturing method of fixing magnet powder in a net shape so as to maintain a magnetic anisotropic (C-axis) angle of a magnet with respect to a tangential line and for performing a deformation with a flow so as to have a predetermined circular arc shape or a predetermined annular shape. Particularly, by performing a deformation with a viscous flow or an extension flow, a deformability of the magnet is improved, and thus shape compatibility with respect to a thickness is. improved. A C-axis angle θ with respect to a tangential direction is controlled at an arbitrary position and an arbitrary angle so as to reduce cogging torque without separating a magnetic pole into segments.

摘要翻译： 为了通过改善径向各向异性磁体的形状相容性来提高具有改进的最大能量乘积（BH）max的含铁芯永磁电动机的平静性和可控性，提供了将磁体粉末固定在网中的径向各向异性磁体制造方法 形状，以便相对于切向线保持磁体的磁各向异性（C轴）角度，并且以流动进行变形以具有预定的圆弧形状或预定的环形形状。 特别地，通过进行粘性流动或延伸流动的变形，能够提高磁体的变形性，能够提高与厚度相应的形状兼容性。 C轴角度; 相对于切向方向被控制在任意位置和任意角度，以便在不将磁极分成段的情况下减小齿槽转矩。

公开(公告)号：US20100308679A1

公开(公告)日：2010-12-09

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： H02K21/14

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 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t1为0.95T或更大的矫顽力HcJ的厚度为t1的均质磁体，矫顽力HcJ为400kA / m 以及具有厚度为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或更大，并且在旋转轴线方向上以多层彼此堆叠，其中至少两个极对 并且提供具有由磁体单独实现的渗透（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：US20110266894A1

公开(公告)日：2011-11-03

申请号：US13091876

申请日：2011-04-21

申请人： Fumitoshi YAMASHITA ,  Shinsaku NISHIMURA ,  Noboru MENJO

发明人： Fumitoshi YAMASHITA ,  Shinsaku NISHIMURA ,  Noboru MENJO

IPC分类号： H02K37/12 ,  H02K21/12 ,  B32B37/16

CPC分类号： B32B37/02 ,  B32B2307/208 ,  B32B2309/105 ,  B32B2311/00 ,  B82Y25/00

摘要： There is provided the manufacturing method of a laminated magnet film, including the steps of: a first step of preparing a magnet film, 40 μm to 300 μm in thickness, provided with a nanocrystalline structure magnetically isotropic; a second step of applying a self-bonding resin composition with film formability on the magnet film preparing a self-bonding magnet film composed of the magnet film and a self-bonding layer; a third step of mechanically processing the self-bonding magnet film being solid or hollow; a fourth step of preparing the laminated magnet film by laminating the self-bonding magnet films; a fifth step of melting the self-bonding layer of the laminated magnet film and then cooling and solidifying the self-bonding layer to integrally rigidify the laminated magnet film; and a sixth step of magnetizing the rigidified laminated magnet film.

摘要翻译： 提供了一种层叠磁体膜的制造方法，包括以下步骤：制备厚度为40μm至300μm，具有磁各向同性的纳米晶体结构的磁膜的第一步骤; 将具有成膜性的自粘合树脂组合物应用于由磁体膜和自粘合层构成的自粘合磁体膜的磁体膜上的第二步骤; 机械处理固体或中空自粘磁体膜的第三步骤; 通过层叠自粘合磁体膜来制备层压磁体膜的第四步骤; 熔融层叠磁体膜的自粘合层，然后冷却固化自粘合层以使叠层磁体膜一体硬化的第五步骤; 以及使刚性化的层叠磁体膜磁化的第六步骤。