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    • 61. 发明申请
    • ELECTRIC MOTOR
    • 电动马达
    • US20110018381A1
    • 2011-01-27
    • US12897378
    • 2010-10-04
    • Kenji MiyataYoshihisa Ishikawa
    • Kenji MiyataYoshihisa Ishikawa
    • H02K3/28
    • H02K3/28H02K19/12H02K19/22
    • An electric motor comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities.
    • 一种电动机,包括:沿圆周方向具有多个磁极的转子; 以及定子,其齿与所述转子的周边相对配置,在所述转子和所述定子之间插入气隙,所述线圈导体缠绕在所述定子上,使得两个定子磁极可以由两个线圈单元形成 在由转子的磁极对着的360度的范围内的绕定子齿缠绕的相; 形成定子磁极的两个线圈单元中的每一个跨越小于180电度的电角度; 形成两个定子磁极的两个线圈圈布置成使得它们可以不重叠; 并且线圈导体被缠绕,使得相邻的定子磁极呈现相反的磁极性。
    • 64. 发明授权
    • Outer rotor type hybrid stepping motor
    • 外转子式混合式步进电机
    • US07446441B2
    • 2008-11-04
    • US10921115
    • 2004-08-19
    • Yuji EnomotoKenji MiyataYasuaki MotegiShoji Ohiwa
    • Yuji EnomotoKenji MiyataYasuaki MotegiShoji Ohiwa
    • H02K37/06
    • H02K37/18
    • An outer rotor type hybrid stepping motor including a stator, a rotor, a magnet disposed axially in either the stator or rotor, a stator core disposed inward from a gap formed between the stator and rotor, the rotor disposed outside the gap, and a stator winding wound around the stator core. The outer rotor type hybrid stepping motor has a cross-sectional area A in the axial direction of the magnet, a gap portion diameter D, a lamination thickness of the stator core in the axial direction L and a residual magnetic flux density of the magnet Br. The lamination thickness of the stator core in the axial direction L and the residual magnetic flux density Br are determined according to the equation D×L/A=k×Br with the condition that coefficient k is kept in a range of 0.56-0.66(1/T). The resulting optimized design parameters for L and Br provide a reduction in size of the outer rotor type hybrid stepping motor, a high output and a high resolution.
    • 一种外转子式混合式步进电动机,其包括定子,转子,轴向设置在定子或转子中的磁体,定子铁心,其从形成在定子和转子之间的间隙向内设置,转子设置在间隙外部,定子 缠绕在定子芯上。 外转子型混合式步进电动机在磁体的轴向上具有截面积A,间隙部直径D,定子铁心的轴向L的层叠厚度和磁铁Br的残留磁通密度 。 定子铁芯在轴向方向L的层叠厚度和剩余磁通密度Br按照公式DxL / A = kxBr确定,系数k保持在0.56-0.66(1 / T)的范围内, 。 所得到的L和Br的优化设计参数提供了外转子式混合式步进电机的尺寸减小,高输出和高分辨率。
    • 65. 再颁专利
    • Non-contact rotational position sensor and throttle valve assembly including non-contact rotational position sensor
    • 非接触式旋转位置传感器和节气门组件包括非接触式旋转位置传感器
    • USRE40523E1
    • 2008-09-30
    • US10797702
    • 2004-03-10
    • Kenji MiyataSatoshi ShimadaFumio TajimaToshifumi UsuiMasanori Kubota
    • Kenji MiyataSatoshi ShimadaFumio TajimaToshifumi UsuiMasanori Kubota
    • G01B7/30
    • G01D5/145
    • A non-contact sensor for sensing a rotational position of a rotating object is provided. A ring-shaped permanent magnet magnetized in the axial direction is sandwiched between two pairs of magnetic plates from above and below. Two pairs of upper and lower protruded magnetic substance portions are provided between the upper and lower magnetic plates at opposite outer ends thereof. Magnetic sensitive devices are inserted in air gaps between the two pairs of upper and lower protruded magnetic substance portions. A magnetic flux generated from the ring-shaped permanent magnet is substantially concentrated to the protruded magnetic substance portions and passes the magnetic sensitive devices. The amount of magnetic flux passing each magnetic sensitive device is substantially proportional to the rotational angle of the ring-shaped permanent magnet. The rotational position of the ring-shaped permanent magnet and hence the rotational position of a rotating shaft supporting the ring-shaped permanent magnet can be sensed in a non-contact manner as a signal output from the magnetic sensitive device. Since the magnetic flux is effectively concentrated to positions where magnetic sensitive devices are attached, a non-contact rotational position sensor having high accuracy and high sensitivity can be obtained.
    • 提供了用于感测旋转物体的旋转位置的非接触传感器。 沿轴向磁化的环形永久磁铁从上下方向夹在两对磁性板之间。 两对上,下突出的磁性体部分设置在上下磁性板之间的相对的外端。 磁敏装置插入两对上下突出的磁性物质部分之间的气隙中。 从环形永久磁铁产生的磁通量大致集中到突出的磁性体部分并通过磁敏装置。 通过每个磁敏装置的磁通量的大小与环形永久磁铁的旋转角成正比。 环形永磁体的旋转位置以及支撑环形永久磁铁的旋转轴的旋转位置可以以非接触的方式被感测为从感应装置输出的信号。 由于磁通量有效地集中在安装了敏感元件的位置,所以可以获得具有高精度和高灵敏度的非接触式旋转位置传感器。