公开(公告)号：US07988795B2

公开(公告)日：2011-08-02

申请号：US11606088

申请日：2006-11-30

申请人： Koichi Hirota ,  Takehisa Minowa

发明人： Koichi Hirota ,  Takehisa Minowa

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  H01F1/0573 ,  H01F1/058 ,  H01F41/0273 ,  H01F41/0293

摘要： An R-T-B—C rare earth sintered magnet (R═Ce, Pr, Nd, Tb, or Dy; T=Fe) is obtained by mixing an R-T-B—C magnet matrix alloy with an R fluoride and an R-rich R-T-B—C sintering aid alloy, followed by pulverization, compaction and sintering. The sintered structure consists of an R2T14B type crystal primary phase and a grain boundary phase. The grain boundary phase consists essentially of 40-98 vol % of R—O1-x—F1+2x and/or R—Fy, 1-50 vol % of R—O, R—O—C or R—C compound phase, 0.05-10 vol % of R-T phase, 0.05-20 vol % of B-rich phase or M-B2 phase (M=Ti, V, Cr, Zr, Nb, Mo, Hf, Ta or W), and the balance of an R-rich phase.

摘要翻译： RTB-C稀土烧结磁体（R = Ce，Pr，Nd，Tb或Dy; T = Fe）通过将RTB-C磁体基体合金与R氟化物和富R RTB-C烧结 辅助合金，然后粉碎，压实和烧结。 烧结结构由R2T14B型晶体初相和晶界相组成。 晶界相基本上由40-98vol％的R-O1-x-F1 + 2x和/或R-Fy，1-50vol％的R-O，R-O-C或R-C化合物相 ，0.05-10体积％的RT相，0.05-20体积％的富B相或M-B2相（M = Ti，V，Cr，Zr，Nb，Mo，Hf，Ta或W），余量 的富R相。

公开(公告)号：US20110162504A1

公开(公告)日：2011-07-07

申请号：US12984717

申请日：2011-01-05

申请人： Yuhito Doi ,  Takehisa Minowa ,  Takayuki Hasegawa ,  Takaharu Yamaguchi ,  Koji Sato

发明人： Yuhito Doi ,  Takehisa Minowa ,  Takayuki Hasegawa ,  Takaharu Yamaguchi ,  Koji Sato

IPC分类号： B26D1/12 ,  B25B1/00

CPC分类号： B28D7/04 ,  B24B27/06 ,  B28D1/24 ,  Y10T29/49046 ,  Y10T83/9403

摘要： A magnet holding jig comprises a platform and first and second holders disposed on opposite sides of the platform. The platform is provided with channels, the holders are comb-shaped to define digits and slits, the channels and the slits being aligned to define guide paths for permitting entry of a cutting tool therein, and the holders are also configured as digitate hooks. The holder hooks are in contact with a rare earth magnet block resting on the platform. The holders are pushed inward at their lower portions so as to elastically deform the digitate hook and move it backward and to bring the hook digits in pressure abutment with the magnet block, thereby holding the magnet block in place on the platform.

摘要翻译： 磁体夹持夹具包括平台以及设置在平台的相对侧上的第一和第二支架。 平台设置有通道，保持器是梳状的以限定数字和狭缝，通道和狭缝对齐以限定用于允许切削工具进入其中的引导路径，并且保持器还被配置为数字钩。 支架钩与搁置在平台上的稀土磁体块接触。 保持器在其下部被向内推，以便使数字钩弹性变形并向后移动，并使挂钩数字与磁体块压力邻接，从而将磁块保持在平台上的适当位置。

公开(公告)号：US20100253173A1

公开(公告)日：2010-10-07

申请号：US12676062

申请日：2008-09-10

申请人： Koji Miyata ,  Minori Miyata ,  Atsushi Miyata ,  Hideki Kobayashi ,  Naoki Watanabe ,  Takehisa Minowa

发明人： Koji Miyata ,  Minori Miyata ,  Atsushi Miyata ,  Hideki Kobayashi ,  Naoki Watanabe ,  Takehisa Minowa

IPC分类号： H02K3/18

CPC分类号： H02K3/47 ,  H02K16/00 ,  H02K21/24

摘要： A high-output and highly efficient axial gap type rotating machine capable of reducing an eddy current generated in a winding wire and supplying a larger current is provided. The axial gap type rotating machine may include a housing, a rotating shaft rotatably supported in the housing; two rotors capable of rotating integrally with the rotating shaft, and a stator fixed to the housing, the stator disposed in an air gap formed by the rotating plates disposed to face each other, the stator including a fixing plate and coils disposed in a circle on the fixing plate so as to face the circles of the permanent magnets, wherein each of the coils includes a winding wire formed by a bundle of at least two coil conductors having rectangular cross sections by aligning at least one of long sides and short sides thereof, and the winding wire has an outer circumference covered with an insulating coating and is wound such that the long sides in cross section of the coil conductors are positioned perpendicular to the magnetic pole surfaces of the permanent magnets.

摘要翻译： 提供了能够减少绕组线中产生的涡电流并提供较大电流的高输出和高效率轴向间隙型旋转机。 轴向间隙型旋转机械可以包括壳体，可旋转地支撑在壳体中的旋转轴; 能够与旋转轴一体旋转的两个转子和固定到壳体的定子，定子设置在由彼此相对设置的旋转板形成的空气间隙中，定子包括固定板和设置成圆圈的线圈 所述固定板朝向所述永磁体的圆周，其中每个所述线圈包括由具有矩形横截面的至少两个线圈导体的束形成的绕组，所述绕组线具有通过对准其长边和短边中的至少一个， 并且绕组线具有覆盖有绝缘涂层的外周，并且被卷绕成使得线圈导体的横截面的长边垂直于永磁体的磁极表面定位。

公开(公告)号：US07626300B2

公开(公告)日：2009-12-01

申请号：US10589235

申请日：2005-06-20

申请人： Koji Sato ,  Takehisa Minowa

发明人： Koji Sato ,  Takehisa Minowa

IPC分类号： H02K21/12

CPC分类号： H01F7/0268 ,  H01F1/0577 ,  H01F41/028 ,  H02K1/2733 ,  H02K15/03 ,  Y10T29/49009

摘要： In a radially anisotropic sintered magnet of annular shape, the remanence in a radial direction of the annulus increases and decreases at intervals of 90° in a circumferential direction of the annulus, and the remanence in a radial direction over the entire circumference of the annulus has a maximum of 0.95-1.60 T and a minimum equal to 50-95% of the maximum. In a permanent magnet motor comprising a plurality of stator teeth, the radially anisotropic annular sintered magnet is incorporated after it is magnetized in 4n poles (wherein n is an integer of 1 to 20) so that the boundary between N and S poles is located within the range that is centered at the radial direction where the remanence exhibits the minimum and extends ±10° therefrom in a circumferential direction. The radially anisotropic annular sintered magnet undergoes neither fracture nor cracking during the sintering and aging/cooling steps even when it is shaped to a low inner/outer diameter ratio and has satisfactory magnetic properties. A permanent magnet motor comprising the radially anisotropic annular sintered magnet is inexpensive and of high performance.

摘要翻译： 在圆环状的径向各向异性烧结磁体中，环形空间的径向的剩磁在圆环的圆周方向以90°的间隔增大和减小，并且在环的整个圆周上的径向的剩余磁场具有 最大值为0.95-1.60 T，最小值为最大值的50-95％。 在包括多个定子齿的永磁电动机中，径向各向异性环形烧结磁体在4n极（其中n为1〜20的整数）被磁化后并入，使得N极和S极之间的边界位于 在径向方向上以剩余为最小的范围为中心，在圆周方向上延伸±10°。 径向各向异性环状烧结磁体在烧结和老化/冷却步骤期间既不会发生断裂也不起裂，即使成形为低内/外径比并且具有令人满意的磁特性。 包括径向各向异性环形烧结磁体的永磁电动机是廉价且高性能的。

公开(公告)号：US20090224613A1

公开(公告)日：2009-09-10

申请号：US10584768

申请日：2005-04-26

申请人： Masanobu Shimao ,  Takehisa Minowa ,  Takayuki Hasegawa

发明人： Masanobu Shimao ,  Takehisa Minowa ,  Takayuki Hasegawa

IPC分类号： H02K41/035

CPC分类号： H01F1/14708 ,  H01F7/081 ,  H02K1/17 ,  H02K41/0358

摘要： Provided are a magnetic circuit capable of being manufactured inexpensively due to omission of formation of a corrosion-resistant metallic surface film as well as a voice coil motor or an actuator by utilizing the same. The magnetic circuit comprises yoke members prepared from a plate material of 0.1 mm to 5 mm thickness of a martensite-type, ferrite-type or precipitation-hardening stainless steel material or a Cr-based heat-resistant steel material containing 0.0001-1% (% by mass, the same hereinbelow) of C, 0.0001-5% of Si, 0.001-2% of Mn, 0.0001-0.1% of P, 0.0001-0.2% of S, 0.0001-5% of Al, 0.0001-0.1% of O, 0.0001-0.1% of N, 0.0001-1% of Ni and 10.5-30% of Cr together with at least one alloying element selected from Ti, Co, Cu, Zr, Nb, V, Mo, W, Ta and B as the additive elements in a total amount of 0.0001-5%, the balance being Fe.

摘要翻译： 提供一种由于省略了形成耐蚀金属表面膜以及通过利用它的音圈电动机或致动器而能够廉价地制造的磁路。 磁路包括由厚度为0.1mm至5mm的马氏体型，铁素体型或沉淀硬化不锈钢材料的板材或含有0.0001-1％的Cr类耐热钢材料制成的轭部件 质量％，下同）C：0.0001-5％Si，0.001-2％Mn，0.0001-0.1％P，0.0001-0.2％S，0.0001-5％Al，0.0001-0.1％ 的O，0.0001-0.1％的N，0.0001-1％的Ni和10.5-30％的Cr以及至少一种选自Ti，Co，Cu，Zr，Nb，V，Mo，W，Ta和 B作为添加元素，总量为0.0001-5％，余量为Fe。

公开(公告)号：US07485193B2

公开(公告)日：2009-02-03

申请号：US10589237

申请日：2005-06-20

申请人： Koichi Hirota ,  Takehisa Minowa

发明人： Koichi Hirota ,  Takehisa Minowa

IPC分类号： H01F1/053

CPC分类号： C22C1/0441 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/005 ,  H01F1/057 ,  B22F9/04 ,  B22F3/02 ,  B22F3/1007 ,  B22F2201/02 ,  B22F2201/20 ,  B22F2201/11

摘要： A R—Fe—B base rare earth permanent magnet material consists of, in percents by weight, 25 to 45 wt % of R, 0.1 to 4.5 wt % of Co, 0.8 to 1.4 wt % of B, 0.05 to 3.0 wt % of Al, 0.02 to 0.5 wt % of Cu, 0.03 to 0.5 wt % of M, 0.01 to 0.5 wt % of C, 0.05 to 3.0 wt % of O, 0.002 to 0.1 wt % of N, 0.001 to 2.0 wt % of F, with the balance of Fe and incidental impurities, wherein R is at least one element selected from among Nd, Pr, Dy, Tb and Ho, and M is at least one element selected from among Zr, Hf, Ti, Cr, Nb, Mo, Si, Sn, Zn, V, W and Cr.

摘要翻译： R-Fe-B基稀土永磁材料以重量百分比为25〜45重量％的R，0.1〜4.5重量％的Co，0.8〜1.4重量％的B，0.05〜3.0重量％ Al，0.02〜0.5重量％的Cu，0.03〜0.5重量％的M，0.01〜0.5重量％的C，0.05〜3.0重量％的O，0.002〜0.1重量％的N，0.001〜2.0重量％的F， 余量为Fe和杂质，其中R为选自Nd，Pr，Dy，Tb和Ho中的至少一种元素，M为选自Zr，Hf，Ti，Cr，Nb，Mo中的至少一种元素 ，Si，Sn，Zn，V，W和Cr。

公开(公告)号：US07333298B2

公开(公告)日：2008-02-19

申请号：US11004861

申请日：2004-12-07

申请人： Hajime Nakamura ,  Takehisa Minowa

发明人： Hajime Nakamura ,  Takehisa Minowa

IPC分类号： G11B5/56

CPC分类号： G11B5/5552 ,  G11B5/59627

摘要： In conjunction with a magnetic disk drive unit comprising a voice coil motor (14), an arm (12) extending from the motor, a magnetic head actuator (2) mounted at a distal end of the arm, a suspension (16) coupled to the actuator, and a magnetic head slider mounted on the suspension at its distal end, the magnetic head actuator (2) comprises a stator section (30) secured to the arm distal end, an attachment section (18) secured to the arm distal end together with the stator section, micro-beams (20, 22) extending from the attachment section, a rotor section (24) supported for swing motion by the micro-beams, a permanent magnet (32) disposed in the stator section, and a coil (28) disposed in the rotor section. Electric current is conducted through the coil in the magnetic field created by the permanent magnet for causing the micro-beams to be displaced for inducing swing motion of the suspension secured to the rotor section and the magnetic head slider mounted thereon.

摘要翻译： 结合包括音圈电动机（14）的磁盘驱动单元，从电动机延伸的臂（12），安装在臂的远端的磁头致动器（2），悬架（16），其联接到 致动器和安装在其远端处的悬架上的磁头滑块，磁头致动器（2）包括固定到臂远端的定子部分（30），固定到臂远端的附接部分（18） 与所述定子部分一起，从所述安装部延伸的微梁（20,22），被所述微梁支撑以摆动运动的转子部分（24），设置在所述定子部分中的永磁体（32），以及 设置在转子部分中的线圈（28）。 在由永久磁铁产生的磁场中，电流通过线圈传导，使得微波束发生位移，以引起固定在转子部分上的悬架和安装在其上的磁头滑块的摆动运动。

公开(公告)号：US20070171017A1

公开(公告)日：2007-07-26

申请号：US11679710

申请日：2007-02-27

申请人： Koji SATO ,  Mitsuo Kawabata ,  Takehisa Minowa

发明人： Koji SATO ,  Mitsuo Kawabata ,  Takehisa Minowa

IPC分类号： H01F3/00

CPC分类号： H01F41/028 ,  H01F7/021 ,  H02K15/03

摘要： A radially anisotropic ring magnet endowed with good magnetic characteristics and having throughout the magnet an angle of 80 to 100° between a center axis thereof and a radial anisotropy imparting direction is manufactured by a pressing operation.

摘要翻译： 通过按压操作制造具有良好磁特性的径向各向异性环形磁体，并且通过按压操作来制造整个磁体，其中心轴和径向各向异性赋予方向之间的角度为80°至100°。

公开(公告)号：US20070151629A1

公开(公告)日：2007-07-05

申请号：US10589470

申请日：2005-06-20

申请人： Koji Sato ,  Takehisa Minowa

发明人： Koji Sato ,  Takehisa Minowa

IPC分类号： H01F41/02

CPC分类号： H02K15/03 ,  H01F1/086 ,  H01F41/028

摘要： A method involves the steps of using a mold having a core made of a ferromagnetic material, charging a mold cavity with a magnet powder, compacting the magnet powder while applying an orienting magnetic field according to the vertical compacting in horizontal magnetic field process, and sintering the compact, thereby producing a radially anisotropic annular sintered magnet in which the remanence in a radial direction of the annulus increases and decreases at intervals of 90° in a circumferential direction of the annulus, and the remanence in a radial direction over the entire circumference of the annulus has a maximum of 0.95-1.60 T and a minimum equal to 50-95% of the maximum. A method for preparing an annular multi-pole magnet for a permanent magnet motor involves magnetizing the magnet so that the boundary between N and S poles is located within the range that is centered at the radial direction where the remanence exhibits the minimum and extends ±10° therefrom in a circumferential direction.

摘要翻译： 一种方法包括以下步骤：使用具有由铁磁材料制成的芯体的模具，用磁体粉末填充模具腔体，在水平磁场过程中根据垂直压实施加定向磁场，压实磁体粉末，并且烧结 从而产生径向各向异性的环状烧结磁体，其中环形空间的径向上的剩余量在圆环的圆周方向上以90°的间隔增大和减小，并且在整个圆周上沿径向的剩余量 环形最大值为0.95-1.60 T，最小值为最大值的50-95％。 制备用于永磁电动机的环形多极磁体的方法包括使磁体磁化，使得N极和S极之间的边界位于以剩磁为最小的径向方向为中心的范围内，并且延伸±10 °。

公开(公告)号：US07201809B2

公开(公告)日：2007-04-10

申请号：US10526012

申请日：2003-08-27

申请人： Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

发明人： Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

IPC分类号： H01F1/08

CPC分类号： H01F41/028 ,  H01F7/021 ,  H02K15/03

摘要： A radially anisotropic ring magnet endowed with good magnetic characteristics and having throughout the magnet an angle of 80 to 100° between a center axis thereof and a radial anisotropy imparting direction is manufactured by a pressing operation.

摘要翻译： 通过按压操作制造具有良好磁特性的径向各向异性环形磁体，并且通过按压操作来制造整个磁体，其中心轴和径向各向异性赋予方向之间的角度为80°至100°。