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    • 3. 发明授权
    • Zero air gap orbiting gear stepper motor
    • 零气隙轨道齿轮步进电机
    • US5289065A
    • 1994-02-22
    • US043048
    • 1993-04-05
    • James E. Marshall
    • James E. Marshall
    • H02K7/116H02K1/14H02K3/18H02K37/04H02K41/06H02K37/00
    • H02K1/148H02K3/18H02K37/04H02K41/06
    • A stepper motor having an internally toothed ring gear acting as a stator which is contacted by one or more pinion gears supported by a carrier. The ring gear stator is made up of several sets of teeth which are separately magnetically polarized to move the pinion gears about the ring gear. Three toroidal coils are preferably provided to charge three different sets of teeth which are arranged in a repeating series of three about the ring gear. Alternatively, a linear actuator can be provided to provide a linear output. The teeth may also include an individual coil wherein sets of teeth can be electromagnetically biased into a north or south polarity or remain neutral.
    • 一种步进电动机,其具有作为定子的内齿环形齿轮,该齿轮与由载体支撑的一个或多个小齿轮接触。 齿圈定子由多组齿组成,它们分别磁极化,以围绕齿圈移动小齿轮。 优选地提供三个环形线圈以对三个不同的齿组进行充电,所述三组不同的齿组以环绕齿圈的三个重复系列排列。 或者,可以提供线性致动器以提供线性输出。 齿还可以包括单独的线圈,其中齿组可以被电磁偏置成北极或南极或保持中立。