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    • 78. 发明授权
    • Stepping motor having improved construction to reduce parts and
facilitate manufacture
    • 步进电机具有改进的结构以减少零件并促进制造
    • US5747897A
    • 1998-05-05
    • US768429
    • 1996-12-18
    • Toru IwasaAkio ItoYoshiyuki Ariki
    • Toru IwasaAkio ItoYoshiyuki Ariki
    • F02M25/07H02K5/22H02K7/116H02K37/14H02K37/00H02K15/00
    • H02K7/116F02M26/54F02M26/67F02M26/68H02K37/14H02K2211/03H02K5/225
    • In a stepping motor, each of four integrally molded annular stators constituting two pairs has an annular plate having a central hole in which a magnet rotor is to be inserted, and pole teeth that form magnetic pole portions separated from the magnet rotor at a predetermined gap. The pole teeth of one annular stator of a given pair extend from the annular plate to be perpendicular to the other of the given pair, and are equidistantly arranged around the central hole to be shifted from the pole teeth of the other annular stator by a half pitch. Mounting holes are formed in each annular plate at predetermined spaces in the circumferential direction, and the mounting holes formed in the annular plates of given annular stators of different pairs that are arranged back to back are located at the same positions. Molded insulating films are formed on surfaces, which do not oppose the magnet rotor, of all the annular stators. The insulating films are coupled to each other through the mounting holes formed in the annular plates of the given annular stators. Excitation coils are wound on all the annular stators through the insulating films. A plate-like yoke has a major portion inserted between opposing surfaces of the annular plates adjacent to the outer circumferential surfaces of all the annular stators.
    • 在步进电机中,构成两对的四个整体模制的环形定子中的每一个具有环形板,该环形板具有中心孔,磁体转子将被插入该中心孔中;以及极齿,其形成磁铁部分,以预定间隙与磁体转子分离 。 给定对的一个环形定子的极齿从环形板延伸成垂直于给定对的另一个,并且围绕中心孔等距布置,以从另一个环形定子的极齿移位一半 沥青。 每个环形板在圆周方向上以预定空间形成安装孔,并且形成在背对背布置的不同对的给定环形定子的环形板中的安装孔位于相同的位置。 在所有环形定子中形成有不与磁体转子相对的表面上的模制绝缘膜。 绝缘膜通过形成在给定环形定子的环形板中的安装孔彼此连接。 励磁线圈通过绝缘膜缠绕在所有环形定子上。 板状轭具有主要部分插入环形板的相对表面之间,邻近所有环形定子的外圆周表面。