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31. 发明专利

JP2007074888A Rotor for motor and manufacturing method therefor 有权
标题翻译：电机转子及其制造方法
公开(公告)号：JP2007074888A
公开(公告)日：2007-03-22
申请号：JP2005365384
申请日：2005-12-19
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： MASUZAWA MASAHIRO , MITA MASAHIRO , KIKUCHI KEIKO
IPC分类号： H02K1/27 , H02K15/02
摘要： PROBLEM TO BE SOLVED: To provide a surface-magnetic type and an inner magnetic-type rotors having high bonding strength between a magnet and a soft magnetic yoke, and exhibiting high structural reliability and favorable motor characteristics even in high speed application, and a manufacturing method therefor.
SOLUTION: The surface magnet-type rotor is composed of an anisotropic bond magnet and a soft magnetic section. To manufacture the surface magnet-type rotor, the anisotropic bond magnet is preliminarily molded in a magnetic field, and then molded finally in a nonmagnetic field to be integrated with the soft magnetic section and heat-cured. Magnetic units each having magnetic poles formed by bonding a pair of permanent magnets such that directions of magnetization are symmetric with respect to the bonding surface are connected to form an anisotropic magnet body, in which the magnetic units are arranged so that magnetic poles of different polarities appear alternately on a magnetism action surface. Favorable motor characteristics are attained by setting the direction of magnetization of the permanent magnets at an angle of 20°±10° relative to the radial direction passing the bonding surface.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种在磁体和软磁轭之间具有高结合强度的表面磁性和内部磁性转子，并且即使在高速应用中也具有高的结构可靠性和良好的电机特性，及其制造方法。
解决方案：表面磁铁型转子由各向异性粘结磁体和软磁性部分组成。为了制造表面磁铁型转子，将各向异性粘结磁体预先在磁场中成型，然后最终在非磁场中成型以与软磁性部分一体化并进行热固化。连接形成各向异性磁体的磁性单元，其各自具有通过使一对永久磁铁相对于接合面对称的永磁体接合而形成的磁极，形成各向异性磁体，其中磁性单元被布置成使得磁极的极性不同交替地出现在磁力作用表面上。通过将永久磁铁的磁化方向设定为相对于通过接合面的径向方向为20°±10°的角度来获得有利的电机特性。版权所有（C）2007，JPO＆INPIT

32. 发明专利

JP2006126130A Magnetostrictive torque sensor 审中-公开
标题翻译：磁感应扭矩传感器
公开(公告)号：JP2006126130A
公开(公告)日：2006-05-18
申请号：JP2004318003
申请日：2004-11-01
申请人： Hitachi Cable Ltd , Hitachi Metals Ltd , 日立金属株式会社 , 日立電線株式会社
发明人： OYO MATSU , MASUZAWA MASAHIRO , MITA MASAHIRO
IPC分类号： G01L3/10
摘要： PROBLEM TO BE SOLVED: To provide a magnetostrictive torque sensor capable of preventing disconnection even if a detection coil is formed in the number of many turns on a flexible substrate, and thinning the thickness of the detection coil, to thereby prevent contact with a magnetostrictive rotating shaft 1.
SOLUTION: This sensor is equipped with the magnetostrictive rotating shaft 1; semicylindrical magnetic cores 3, 3 having a high magnetic permeability and a low conductivity, and arranged oppositely, tightly and concentrically at an interval of r with the outer circumference of the rotating shaft; and a flexible substrate coil 9 mounted on the inner surface of the semicylindrical magnetic cores 3, 3. The flexible substrate coil 9 has a part where the coil is formed clockwise and a part where the coil is formed counterclockwise alternately on one surface of the flexible substrate, and connection between the part formed clockwise and the part formed counterclockwise is performed through the other surface of the flexible substrate.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供即使在柔性基板上形成多圈的检测线圈并且使检测线圈的厚度变薄的情况下，也能够防止断线的磁致伸缩转矩传感器，从而防止与磁致伸缩旋转轴1.解决方案：该传感器配备有磁致伸缩旋转轴1; 具有高导磁率和低导电性的半圆柱形磁芯3 3，并且以与旋转轴的外周成r的间隔相对地紧密并同心地布置; 以及安装在半圆柱形磁芯3 3的内表面上的柔性基板线圈9.柔性基板线圈9具有线圈形成为顺时针的部分和线圈在挠性的一个表面上交替地逆时针方向形成的部分基板，并且顺时针形成的部分与逆时针方向形成的部分之间的连接通过柔性基板的另一个表面进行。版权所有（C）2006，JPO＆NCIPI

33. 发明专利

JP2001230111A ROTATING MACHINE 失效
公开(公告)号：JP2001230111A
公开(公告)日：2001-08-24
申请号：JP2000038479
申请日：2000-02-16
申请人： HITACHI METALS LTD
发明人： TOBISE MASAHIRO , TANIGAWA SHIGEO , MITA MASAHIRO , MASUZAWA MASAHIRO
IPC分类号： H01F1/08 , H01F1/053 , H02K15/03
摘要： PROBLEM TO BE SOLVED: To provide a rotating machine which is high in performance and reliability and equipped with an isotropic R-T-N sheet-like bonded magnet as a field magnet, where the bonded magnet is formed of R-T-N magnetic powder (R denotes two or more rare earth elements including Y and must contain Sm and La, and T is Fe or Fe ane Co) and high in magnetization properties and flexibility (crack ressitance). SOLUTION: A rotating machine is equipped with a sheet-like bonded magnet as a field magnet, where the sheet-like bonded magnet is 0.05 to 5 mm in thickness, high in flexibility, and formed of magnetically isotropic magnetic powder which has a main component composition represented by RaT100-α-δNd in atom % (R denotes two or more rare earth elements including Y and must contain Sm and La, an La content is 0.05 to 2 atom %, T is Fe or Fe and Co, and αand δ are so set as to satisfy formulas, 6

34. 发明专利

JP2001037187A PERMANENT-MAGNET GENERATOR AND DISKETTE HAVING THE SAME 失效
公开(公告)号：JP2001037187A
公开(公告)日：2001-02-09
申请号：JP20263499
申请日：1999-07-16
申请人： HITACHI METALS LTD
发明人： MASUZAWA MASAHIRO , KIMURA FUMIO , TAKAHASHI TOSHIKO , MITA MASAHIRO
IPC分类号： G06K17/00 , H02K1/14 , H02K21/16
摘要： PROBLEM TO BE SOLVED: To save space by reducing the area which the pole teeth of a stator occupy, while maintaining the output of a generator. SOLUTION: These are a permanent-magnet generator that comprises a rotor and a stator 22 and a diskette with this generator incorporated. The rotor has an annular permanent magnet 212 that is rotatable with a boss 211 and a plurality of rotor magnetic poles 213 arranged on the circumferential surface of this permanent magnet. The stator 22 has pole teeth 225 made up of stator magnetic poles 223 that extend radially from the positions where they can face the rotor magnetic poles 213 via magnetic gaps, and parallel teeth 224 that extend continuously from these magnetic poles 223 straight in the transverse direction. The parallel teeth 224 are divided into blocks having the same tooth width and neighboring each other. The distance between the parallel teeth 24 can be irregular. Stator coils are wound on the parallel teeth 24 and their end aprts are connected to each other with external yokes.

35. 发明专利

JP2000201461A MAGNETO BRUSH-LESS ELECTRIC MOTOR 失效
公开(公告)号：JP2000201461A
公开(公告)日：2000-07-18
申请号：JP90299
申请日：1999-01-06
申请人： HONDA MOTOR CO LTD , HITACHI METALS LTD
发明人： MASUZAWA MASAHIRO , MITA MASAHIRO , SUGAYA HIROO , TOIDA NAOYA , SUGAWARA HIDEKI
IPC分类号： H02K29/00 , H02K7/12 , H02K16/02 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a magneto brush-less electric motor obtaining high torque even in a region of rotation at a low speed and the electric motor efficiently usable even in a region of rotation at a high speed. SOLUTION: A magneto brush-less electric motor 50 has a control circuit for detecting a magnetic pole position of a permanent magnet rotor 2 to control a current supply amount to a stator winding in accordance with this position detection signal also a plurality of the permanent magnet rotors. At least, one of a plurality of these permanent magnet rotors is displaced in a rotational direction relating to a magnetic pole of the other permanent magnet rotor in accordance with changing of a rotational speed. An opposed area of a magnetic pole of the permanent magnet rotor and a stator 1 is adjusted to change the number of interchange magnetic fluxes, so as to obtain large torque in a region of rotation at a low speed and rotation at a high speed. Here, the rotational speed is detected, and advance timing of current supply by the control circuit is corrected in accordance with deviation of a synthetic magnetic pole position of the rotor corresponding to this detection.

36. 发明专利

JPH1169743A MAGNET TYPE BRUSHLESS MOTOR 失效
公开(公告)号：JPH1169743A
公开(公告)日：1999-03-09
申请号：JP21421797
申请日：1997-08-08
申请人： HITACHI METALS LTD
发明人： MASUZAWA MASAHIRO , HIRAO NORIYOSHI , SASAKI TAKASHI , MITA MASAHIRO
IPC分类号： H02K29/06 , H02K7/12 , H02K21/14 , H02P7/06 , H02P5/08
摘要： PROBLEM TO BE SOLVED: To provide a magnet type brushless motor producing a high torque during low speed rotation while keeping a high conversion efficiency up to an r.p.m. about three times as high as conventional r.p.m. SOLUTION: The field magnet 3 of a rotor 2 comprises first and second field magnets 31, 32 rotatable relatively. A mechanism for varying the phase of combined pole of the field magnet relative to the first field magnet 31 as the rotor 2 rotates arranges the poles of different polarity in the first and second field magnets 31, 32 during low speed rotation. A governor functions with centrifugal force as the rotational speed increases and a relative rotational force is imparted to the second field magnet 32.

37. 发明专利

JPH09285050A DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JPH09285050A
公开(公告)日：1997-10-31
申请号：JP9263196
申请日：1996-04-15
申请人： HITACHI METALS LTD
发明人： MITA MASAHIRO , SASAKI TAKASHI
IPC分类号： H02K1/22 , H02K1/02 , H02K1/24 , H02K1/27 , H02K19/10
摘要： PROBLEM TO BE SOLVED: To keep a satisfactory efficiency in a low temperature region by a method wherein the internal magnet type rotor core of a permanent magnet field type dynamo- electric machine is made of material which has both fused and solidified texture and heated and cooled texture and of which ferromagnetic parts and non-magnetic parts can be made with the same composition and the non-magnetic parts are provided at the leakage flux parts of the rotor core. SOLUTION: A rotor core 65 is composed of thin plates 67 which are arranged in layers around a rotary shaft 8 in its longitudinal direction. The rotor core 65 consists of non-magnetic parts 660 and ferromagnetic parts 650 which are made of fused and solidified texture and heated and cooled texture. The non-magnetic parts 660 are provided at the leakage flux parts of the rotor core and the volume ratio of the fused and solidified texture in the non-magnetic parts 660 is higher than 30 % to improve the stability in a low temperature region near -40 deg.C. Four through-holes 68 through which permanent magnets 1 are buried in the rotor core 65 (thin plates 67) are formed and the permanent magnets 1 whose polarities are N and S are tightly bonded to the through-holes 68 with resin. With this constitution, a dynamo-electric machine which has high effective flux value in a low temperature region can be manufactured.

38. 发明专利

JPH09121485A MAGNET ROTOR FOR ELECTRIC ROTATING MACHINE 失效
公开(公告)号：JPH09121485A
公开(公告)日：1997-05-06
申请号：JP29890895
申请日：1995-10-24
申请人： HITACHI METALS LTD
发明人： TANAKA SHOGO , SASAKI TAKASHI , MITA MASAHIRO
IPC分类号： H02K21/22 , H02K1/27 , H02K15/03
摘要： PROBLEM TO BE SOLVED: To enable the reduction of current loss and leakage flux by forming the magnetic poles of a permanent magnet from an aggregate of permanent magnet pieces divided in the directions of the circumference and rotational axis of a magnet rotor. SOLUTION: A magnet rotor 1 for electric rotating machines has a permanent mange 2 in large size installed at its inner radius; the permanent magnet is composed of an aggregate of permanent magnet pieces the magnetic poles of which are divided in the directions of the circumference and the rotational axis of the magnet rotor 1. In addition a ferromagnetic frame 3 is installed at the outer radius of the permanent magnet 2 to form the magnet rotor 1 for electric rotating machines. With respect to the permanent magnet 2, a rim 7 is connected to the frame 3, and a tire 8 is installed on the rim 7. A flange 7a installed at the inner radius of the rim 7 in the radial direction, is rotatably supported on a shaft 9a with a bearing 9 in-between. Thus a drive system for electric vehicles is constituted. Further, an armature 4 containing an armature coil 5, an armature core 6 and the like is installed at the inner radius of the permanent magnet 2 with an air gap in-between.

39. 发明专利

JPH0993886A RELUCTANCE MOTOR 失效
公开(公告)号：JPH0993886A
公开(公告)日：1997-04-04
申请号：JP24120395
申请日：1995-09-20
申请人： HITACHI METALS LTD
发明人： MITA MASAHIRO
IPC分类号： H02K1/02 , H02K1/24 , H02K19/06 , H02K19/14
摘要： PROBLEM TO BE SOLVED: To obtain a rigid reluctance motor having high salient pole ratio, high motor efficiency and simple structure which can withstand against high speed rotation by laminating sintered planar members composed of same metal powder composite material where ferromagnetic part and nonmagnetic part coexist thereby constituting a rotor core. SOLUTION: A rotor core is formed by laminating thin plates 17 composed of a sintered composite material of pure iron powder and SUS 304 powder, for example, where a sintered part of ferromagnetic metal powder composing a ferromagnetic part 11 is jointed integrally with a sintered part of nonmagnetic metal powder composing a nonmagnetic part 18. The rotor core 15 is secured to a shaft 14 thus forming a rotor 1. This structure realizes a rigid reluctance motor having high salient pole ratio, high motor efficiency and simple structure which can withstand against high speed rotation.

40. 发明专利

JPS6412868A SWITCHING POWER SOURCE 失效
公开(公告)号：JPS6412868A
公开(公告)日：1989-01-17
申请号：JP16593087
申请日：1987-07-02
申请人： HITACHI METALS LTD
发明人： HASUMURA SHIGERU , OGAWA TSUGIO , MITA MASAHIRO
IPC分类号： H02M3/28
摘要： PURPOSE:To improve efficiency and reliability, by a method wherein the resonance current of a capacitor and the exciting inductance of a transformer is intercepted by a diode. CONSTITUTION:When a transistor (Tr) Q1 in a single-transistor forward type switching circuit is put ON, a DC input power source voltage Vcc is impressed on the winding (n1) of a transformer T1 and a voltage is generated in the winding (n2). Accordingly, a capacitor C1 is charged by the voltage Vcc while the sum of the voltages of the windings (n1), (n2) is impressed on a diode D1 in a reverse direction. Next, when the Tr Q1 is put OFF, inverse voltages are generated in the windings (n1), (n2) and a current is conducted from the winding (n2) through the diodes D2, D1 whereby a DC input power source is charged. Further, a current, charging the capacitor C1 furthermore, is conducted through the diode D1. According to this constitution, only a spike voltage due to the leakage inductance of the transformer T1 may be absorbed by connecting the diode D2 in series to the winding (n2).

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