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1. 发明授权

US3936680A Miniature self-starting electric motor 失效
标题翻译：微型自启动电动机
公开(公告)号：US3936680A
公开(公告)日：1976-02-03
申请号：US486789
申请日：1974-07-09
申请人： Tomohisa Kuwako , Toshio Tanase , Naoshi Sasase
发明人： Tomohisa Kuwako , Toshio Tanase , Naoshi Sasase
IPC分类号： H02K21/40 , H02K11/00 , H02K21/26
CPC分类号： H02K21/40
摘要： A miniature self-starting electric motor includes a rotor shaft rotatably disposed in a casing. Two rotors fixed to said rotor shaft each have a circular body portion of soft magnetic material, said circular body portion having a periphery with pole teeth extending therefrom and spaced from each other at equal angular spacings. Two exciting coils each are disposed to face the pole teeth. Two magnets each provide radially north and south poles alternating at an equal angle with axially same polarities as the other magnet and facing the pole teeth, the number of poles on each permanent magnet being an even multiple of the number of pole teeth. The two rotors are in an opposite relation each other, the pole teeth of one of said two rotors being staggered from the pole teeth of the other by a predetermined electric angle. A condenser is selectively connectible to either one of said two exciting coils. Such miniature self-starting motor rotates reliably in a predetermined direction at the time of starting. Further, the direction of rotation can be selectively determined by operating a switch.
摘要翻译：微型自启动电动机包括可旋转地设置在壳体中的转子轴。固定到所述转子轴上的两个转子各自具有软磁材料的圆形本体部分，所述圆形主体部分具有周边，其中从其延伸的极齿以相等的角度间隔彼此隔开。两个励磁线圈各自设置为面对极齿。两个磁体各自提供径向的北极和南极，以与另一个磁体的轴向相同的极性相等的角度交替，并且面对极齿，每个永磁体上的极数是极齿数的偶数倍。两个转子彼此相对，所述两个转子中的一个转子的极齿与另一转子的极齿交错预定的电角度。冷凝器可选择性地连接到所述两个励磁线圈中的任一个。这种微型自启动马达在启动时沿预定方向可靠地旋转。此外，可以通过操作开关来选择性地确定旋转方向。

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