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    • 54. 发明授权
    • Permanent magnet motor and rotor thereof
    • 永磁电动机及其转子
    • US06633100B2
    • 2003-10-14
    • US09826825
    • 2001-04-06
    • Koji SatoTakehisa MinowaKoji Miyata
    • Koji SatoTakehisa MinowaKoji Miyata
    • H02K2100
    • H02K1/2733H02K21/14Y10T29/49009
    • Disclosed is a permanent magnet motor consisting of a rotor which is a multi polar-magnetized cylindrical permanent magnet such as a neodymium/iron/boron magnet, and a stator having a plurality of stator teeth. Different from conventional but expensive multi-radial orientation of the magnetic anisotropy, the cylindrical permanent magnet has a direction of orientation along a single diameter of the cylinder that is perpendicular to the cylinder axis when a definite relationship is held between the number of the multipolar magnetic poles and the number of the stator teeth. Even when using such a simple and inexpensive cylindrical permanent magnet as the rotor, high performance of the permanent magnet motor can be ensured with regard to a large induced voltage and small torque ripples. When such a rotor having an increased height is desired, two or more of the cylindrical unit permanent magnets each having a single diametrical orientation are coaxially stacked one on the other into a block in such a relative disposition that the directions of two adjacent cylindrical unit permanent magnets make a rotational displacement angle of 180° divided by the number of the unit magnets.
    • 公开了一种永磁电动机,其由诸如钕/铁/硼磁体的多极化磁性圆柱形永磁体的转子和具有多个定子齿的定子组成。 与磁各向异性的常规但昂贵的多径向取向不同,圆柱形永磁体具有垂直于气缸轴线的圆筒单一直径的取向方向,当在多极磁极的数量之间保持一定关系时 极数和定子齿数。 即使使用这种简单且廉价的圆柱形永久磁铁作为转子,也可以确保针对大的感应电压和小的扭矩波动的永磁电动机的高性能。 当需要具有增加的高度的这种转子时,两个或更多个具有单个直径取向的圆柱形单元永磁体以这样的相对位置同轴地堆叠成块,即相邻的两个圆柱形单元的方向永久地 磁铁使180°的旋转位移角除以单位磁体的数量。
    • 58. 发明授权
    • Magnet assembly in MRI instrument
    • MRI仪器中的磁铁组件
    • US5774034A
    • 1998-06-30
    • US706349
    • 1996-08-30
    • Yuhito YonedaKoji MiyataKen OhashiDai Higuchi
    • Yuhito YonedaKoji MiyataKen OhashiDai Higuchi
    • G01R33/385A61B5/055G01R33/383G01R33/3873G01R33/565G01V3/00
    • G01R33/383G01R33/3873G01R33/56518
    • Proposed is an improvement in a magnet assembly of an MRI instrument of the permanent magnet type comprising a pair of permanent magnets facing each other and forming a magnet gap therebetween. A pair of pole pieces each of which are mounted on one of the permanent magnets and a pair of gradient-field coils each of which are mounted on one of the pole pieces where both the pole pieces and coils face the gap. With an object of the invention to cancel the adverse influences caused by the residual magnetization of the pole pieces by the gradient magnetic field generated in the gradient-field coils. The invention proposes providing a pair of magnetic-field compensation members each on one of the gradient-field coils so that the residual magnetization in the compensation members generates a magnetic field which is compensatory for the magnetic field due to the residual magnetization in the pole pieces.
    • 提出了一种永磁体MRI仪器的磁体组件的改进,其包括彼此面对的一对永磁体,并在其间形成磁隙。 一对极片安装在一个永磁体上,一对倾斜磁场线圈分别安装在磁极片之一上,两个极片和线圈都面对间隙。 本发明的目的是通过在梯度场线圈中产生的梯度磁场来消除由极片的剩余磁化引起的不利影响。 本发明提出在梯度场线圈中的一个上提供一对磁场补偿元件,使得补偿元件中的剩余磁化产生由于极片中的剩余磁化而导致的磁场补偿的磁场 。
    • 59. 发明授权
    • Slot-in type disk apparatus in which a disk is directly operated by a lever
    • 插入式盘装置,其中盘由杠杆直接操作
    • US08255935B2
    • 2012-08-28
    • US12159984
    • 2006-11-13
    • Koji Miyata
    • Koji Miyata
    • G11B17/04
    • G11B17/051
    • It is an object of the present invention to provide a slot-in type disk apparatus which can be reduced in thickness by precisely guiding a moving position of a disk when the disk is inserted and discharged. The slot-in type disk apparatus in which a base body 10 and a lid constitute a chassis sheath, a disk-insertion opening 11 into which a disk is directly inserted is formed in a front surface of the chassis sheath, a traverse base 30 is disposed on the side of a front surface of the base body 10, a spindle motor held by the traverse base 30 is disposed at a central portion of the base body 10, the traverse base 30 is provided with a traverse base cover 30A, a discharge lever 100 can move in a portion on the traverse base cover 30A, and a movable-side end of the discharge lever 100 is provided with a guide which holds a disk, and a height of the discharge lever 100 with respect to the traverse base cover 30A is set by contact between the discharge lever 100 and the turntable 31B.
    • 本发明的目的是提供一种插入式盘装置,其能够通过在盘被插入和排出时精确地引导盘的移动位置而减小厚度。 在基座主体10和盖构成机架护套的插入式盘装置中,直接插入盘的盘插入口11形成在底盘护套的前表面中,横动基座30是 设置在基体10的前表面的一侧,由横动基座30保持的主轴电机设置在基体10的中央部,横动基座30设有横动基座盖30A, 杠杆100可以在横动基座盖30A上的一部分中移动,并且排出杆100的可动侧端部设置有保持盘的引导件,并且排出杆100相对于横动底盖的高度 30A通过放电杆100和转台31B之间的接触来设定。
    • 60. 发明授权
    • Permanent magnet generator and wind power generator having a multi-stage rotor and stator
    • 具有多级转子和定子的永磁发电机和风力发电机
    • US08115364B2
    • 2012-02-14
    • US12040085
    • 2008-02-29
    • Takehisa MinowaHideki KobayashiKoji Miyata
    • Takehisa MinowaHideki KobayashiKoji Miyata
    • H02K1/22H02K16/02H02K16/00H02K21/10
    • H02K16/00H02K7/1838H02K21/24
    • A permanent magnet power generator which, when used at an electric power generating facility such as a wind power plant, etc., would not be bulky and would not impede wind capture by a wind turbine; instead, it can raise the generated voltage without impeding wind capture has a generator shaft; at least three rotors, which are secured with the generator shaft, constituted by a plurality of plate-shaped structures having a permanent magnet attached thereto, and each disposed in the longitudinal direction of the generator shaft; and a stator, which is plate-shaped with a stator coil disposed in at least two gaps formed by the rotors, evenly-spaced apart from the generator shaft. The rotors and stators are disposed alternately in the longitudinal direction of the generator shaft, with a total of at least five stages. Also a wind power generator with a propeller on the shaft of this permanent magnet generator.
    • 一种在诸如风力发电设备等发电设备使用时的永磁发电机不会笨重,并且不会阻碍风力涡轮机的风力捕获; 相反,它可以提高发电电压而不阻碍捕获具有发电机轴; 至少三个由发电机轴固定的转子,由多个安装有永久磁铁的板状结构构成,并分别设置在发电机轴的纵向方向上; 以及定子,其具有定子线圈,该定子线圈布置在由所述转子形成的至少两个间隙中,与所述发电机轴均匀间隔开。 转子和定子在发电机轴的纵向方向上交替设置,总共至少五级。 另外在这个永磁发电机的轴上还有一个带螺旋桨的风力发电机。