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.

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。