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57 条记录 (耗时 0.033 秒)

    Direct-current machine having permanent magnet field system
    6.
    发明授权
    Direct-current machine having permanent magnet field system 失效
    直流电机具有永磁场系统

    公开(公告)号：US4639625A

    公开(公告)日：1987-01-27

    申请号：US768323

    申请日：1985-08-22

    申请人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Fumio Tajima ,  Tosio Tomite

    发明人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Fumio Tajima ,  Tosio Tomite

    IPC分类号： H02K23/04 ,  H02K21/26

    CPC分类号： H02K23/04

    摘要： A direct-current machine having a rotor which includes a commutator, an armature core and an armature winding and is sustained rotatably in a field system constituted by a cylindrical housing and permanent magnets disposed inside the same. A demagnetizing force of an armature reaction due to an armature current is reduced by attaching a magnetic plate made of high saturation magnetic flux density material to a part of the pole-face of said field system of permanent magnets which is in the demagnetizing field.

    摘要翻译： 一种具有转子的直流电机，该转子包括换向器，电枢铁心和电枢绕组，并且可旋转地保持在由圆柱形壳体和布置在其内的永磁体构成的现场系统中。 通过将由高饱和磁通密度材料制成的磁性板附着到处于退磁场的永久磁铁场系统的极点的一部分，减小了由电枢电流引起的电枢反作用的退磁力。

    Miniature electric non-uniform magnetization rotating machine
    7.
    发明授权
    Miniature electric non-uniform magnetization rotating machine 失效
    微型电动非均匀磁化旋转机

    公开(公告)号：US4703210A

    公开(公告)日：1987-10-27

    申请号：US905158

    申请日：1986-09-09

    申请人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Toshio Tomite

    发明人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Toshio Tomite

    IPC分类号： H02K1/17 ,  H02K15/03 ,  H02K23/04 ,  H02K1/06 ,  H02K21/26

    CPC分类号： H02K23/04 ,  H02K15/03

    摘要： A miniature electric rotating machine has a stator equipped with a field pole on a peripheral circle of a rotor, and the field pole is constituted by a permanent magnet. Each permanent magnet of a miniature electric rotating machine of this type can be divided into a magnetizing side and a demagnetizing side with respect to armature reaction. In the permanent magnet of the present invention, an end portion on the demagnetizing side, which has directivity different from the magnetizing directions on the magnetizing and demagnetizing sides, is disposed adjacent to the portion on the demagnetizing side.

    摘要翻译： 微型旋转电机具有在转子的外周圆上设置有场极的定子，并且所述场极由永磁体构成。 这种微型旋转电机的每个永磁体可以相对于电枢反应分为磁化侧和去磁侧。 在本发明的永磁体中，与退磁侧的部分相邻配置有与磁化方向不同的磁化方向上的退磁侧的端部。

    Sliding current collector made of ceramics
    8.
    发明授权
    Sliding current collector made of ceramics 失效
    滑动陶瓷收集器

    公开(公告)号：US5208502A

    公开(公告)日：1993-05-04

    申请号：US842484

    申请日：1992-02-27

    申请人： Nobuyuki Yamashita ,  Kazuo Tahara ,  Akio Chiba ,  Masahisa Sobue ,  Toshimi Abukawa ,  Shin'ichi Sakamoto ,  Shun Suzuki

    发明人： Nobuyuki Yamashita ,  Kazuo Tahara ,  Akio Chiba ,  Masahisa Sobue ,  Toshimi Abukawa ,  Shin'ichi Sakamoto ,  Shun Suzuki

    IPC分类号： H01R39/04 ,  H01R39/02 ,  H01R39/08 ,  H02K13/00

    CPC分类号： H01R39/022

    摘要： Ceramics material are not resistant to tensile force, though they are resistant to compression force. Therefore, ceramics materials, when used as the material of a commutator of an electric rotary machine, tends to be cracked and broken due to tensile stress generated in the inner peripheral portion of the commutator when the latter is press-fitted on the rotor shaft of the machine. The invention is aimed at obviating the above-described problem, so as to make it possible to produce a sliding current collector of an electric rotary machine from a ceramics material. To this end, according to the invention, an annular gap is formed between the inner peripheral surface of the ceramics commutator and the other peripheral surface of the rotary shaft and the gap is filled with a resin such as a thermosetting resin which is then thermally set to form a resin layer by which the commutator is bonded to the rotor shaft. The resin layer effectively absorbs any tensile stress which may otherwise be caused in the inner peripheral portion of the commutator due to, for example, thermal expansion of the rotor shaft. It is thus possible to securely fix the commutator to the rotor shaft without risk of cracking or damaging of the commutator.

    DC Electric motor having field poles of permanent magnet
    10.
    发明授权
    DC Electric motor having field poles of permanent magnet 失效
    直流电动机具有永磁体的场极

    公开(公告)号：US4823037A

    公开(公告)日：1989-04-18

    申请号：US113511

    申请日：1987-10-28

    申请人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Toshio Tomite

    发明人： Toshimi Abukawa ,  Kazuo Tahara ,  Noriyoshi Takahashi ,  Toshio Tomite

    IPC分类号： H02K21/26 ,  H02K23/04 ,  H02K23/16 ,  H02K23/18

    CPC分类号： H02K23/18 ,  H02K23/04

    摘要： A DC electric motor which comprises: a reversibly rotatable rotor having an armature core, an armature winding and a commutator; a stator having a yoke and a plurality of field poles provided on an inner circumference of the yoke and each having a permanent magnet and an auxiliary pole; and brush means including a plurality of brushes arranged to be slidably electrically conductively in contact with the commutator; in which the auxiliary pole of each of the field poles is disposed at an exit side of the field pole in the normal foward rotating direction of the rotor; each of the brushes is held movably between a first position corresponding to a position near a geometrically neutral point between a pair of adjacent field poles and a second position corresponding to a position separated at the maximum by an electrical angle of 90 degrees from the geometrically neutral point reversely to the normal rotating direction, and each of the brushes is fixed in the vicinity of the second position in normal use.

    摘要翻译： 一种直流电动机，包括：具有电枢铁心的可逆旋转转子，电枢绕组和换向器; 具有轭和设置在所述轭的内周上并且各自具有永磁体和辅助极的多个场极的定子; 以及刷装置，包括布置成可滑动地导电地与换向器接触的多个电刷; 其中每个场极的辅助极设置在转子的正常转动方向上的场极的出射侧; 每个刷子可移动地保持在对应于在一对相邻场磁极之间的几何中性点附近的位置的第一位置和对应于在最大距离处离开几何中性的电角度90度的位置的第二位置 与正常旋转方向相反，并且每个电刷在正常使用中固定在第二位置附近。