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19 条记录 (耗时 0.015 秒)

    Sliding current collector made of ceramics
    4.
    发明公开
    Sliding current collector made of ceramics 失效
    Gleitender Stromabnehmer aus Keramik。

    公开(公告)号：EP0501787A2

    公开(公告)日：1992-09-02

    申请号：EP92301639.8

    申请日：1992-02-26

    申请人： HITACHI, LTD. ,  HITACHI KOKI CO., LTD.

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

    IPC分类号： H01R39/04

    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.

    摘要翻译： 陶瓷材料虽然耐压缩力，但不耐张力。 因此，陶瓷材料当用作电动旋转机械的换向器的材料时，由于在整流子的内周部分产生的拉伸应力，当其被压配合在转子轴的转子轴上时，其倾向于破裂和断裂 机器。 本发明的目的在于消除上述问题，从而可以从陶瓷材料制造电动旋转机械的滑动集电体。 为此，根据本发明，在陶瓷换向器的内周面和旋转轴的另一个周面之间形成环状间隙，并且填充有热固性树脂等树脂，然后热固化 以形成通过该换向器与转子轴接合的树脂层。 树脂层有效地吸收由于例如转子轴的热膨胀而可能在换向器的内周部分引起的任何拉伸应力。 因此可以将换向器牢固地固定到转子轴上，而不会有换向器的开裂或损坏的危险。

    DC rotary electric machine of permanent magnet field type
    5.
    发明公开
    DC rotary electric machine of permanent magnet field type 失效
    Drehende elektrische Gleichstrommaschine vom Typ mit dauermagnetischem Feld。

    公开(公告)号：EP0339584A1

    公开(公告)日：1989-11-02

    申请号：EP89107490.8

    申请日：1989-04-25

    申请人： HITACHI, LTD.

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

    IPC分类号： H02K23/04

    CPC分类号： H02K23/04

    摘要： A novel DC rotary electric machine of permanent magnet field type is disclosed, in which each of a plurality of permanent field magnets (30, 30a) having an auxiliary pole (8) of magnetic material are arranged alternately with each of a plurality of field magnets (40, 40a) including only a magnetic material along the peripheral direction on the inner periphery of a stator yoke (7). The field magnets (30, 30a) with the auxiliary poles are arranged adjacent to the field magnets (40, 40a) of magnetic material with through bolts extending therebetween.

    摘要翻译： 公开了一种永久磁场型的新型直流旋转电机，其中具有磁性材料的辅助极（8）的多个永磁场磁体（30,30a）中的每一个与多个磁场磁体 （40,40a），其仅在定子线圈（7）的内周上沿着周向方向仅包括磁性材料。 具有辅助极的场磁体（30,30a）被布置成与磁性材料的磁场磁体（40,40a）相邻，其中通过螺栓延伸。

    Miniature electric rotating machine
    7.
    发明公开
    Miniature electric rotating machine 失效
    微型电动旋转机

    公开(公告)号：EP0215441A3

    公开(公告)日：1987-12-16

    申请号：EP86112526

    申请日：1986-09-10

    申请人： HITACHI, LTD.

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

    IPC分类号： H02K23/04

    CPC分类号： H02K23/04 ,  H02K15/03

    摘要： This invention relates to a miniature electric rotating machine having a stator equipped with a field pole on a peri­pheral circle of a rotor and the field pole is constituted by a permanent magnet (8). Each permanent magnet of a conventional miniature electric rotating machine of this type can be divided into a portion on a magnetizing side and a portion on a demagnetizing side with respect to armature reaction. In the permanent magnet (8) of the present invention, an end portion (ll) 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.

    Direct-current machine having permanent magnet field system
    8.
    发明公开
    Direct-current machine having permanent magnet field system 失效
    永久记录仪Gleichstrommotor mit。

    公开(公告)号：EP0173917A1

    公开(公告)日：1986-03-12

    申请号：EP85110524.7

    申请日：1985-08-21

    申请人： HITACHI, LTD.

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

    IPC分类号： H02K23/04 ,  H02K1/14

    CPC分类号： H02K23/04

    摘要： Relating to a direct-current machine having a rotor which includes a commutator (2), an armature core (3) and an armature winding and is sustained rotatably in a field system constituted by a cylindrical housing and permanent magnets (8,9) disposed inside the same, the aim of the invention is to reduce a demagnetizing force of an armature reaction due to an armature current by attaching a magnetic plate (10) made of high saturation magnetic flux density material to a part of the pole-face of said field system of permanent magnets (8,9) which is in the demagnetizing field.

    摘要翻译： 关于具有转子的直流电机，其包括换向器（2），电枢铁心（3）和电枢绕组，并且可旋转地保持在由圆柱形壳体和永久磁铁（8,9）构成的现场系统中 本发明的目的在于通过将由高饱和磁通密度材料制成的磁性板（10）附着在所述电极电极的极点的一部分上来减小由于电枢电流引起的电枢反应的退磁力 在退磁场中的永磁体（8,9）的现场系统。

    Sliding current collector made of ceramics
    9.
    发明公开
    Sliding current collector made of ceramics 失效
    滑动陶瓷收集器

    公开(公告)号：EP0501787A3

    公开(公告)日：1992-12-30

    申请号：EP92301639.8

    申请日：1992-02-26

    申请人： HITACHI, LTD. ,  HITACHI KOKI CO., LTD.

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

    IPC分类号： H01R39/04

    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.