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    • 3. 发明授权
    • Device for automatically halting an electric motor after a certain
number of revolutions
    • 在一定数量的改装后自动收起电动马达的装置
    • US5111925A
    • 1992-05-12
    • US626735
    • 1990-12-13
    • Gerard EvreuxDidier Camps
    • Gerard EvreuxDidier Camps
    • H01H19/18H02P3/06
    • H01H19/186Y10T74/18688
    • A device in which a sliding-gear nut is displaced on a threaded rod, one of these elements being driven in rotation by the motor to be controlled, the sliding-gear nut actuating a switch when it arrives at the end of its travel after a determined number of revolutions of the motor. The sliding-gear nut is integral in rotation with a second nut intended to interact with a second threaded part situated at the end of the first threaded part, of diameter greater than the diameter of the first threaded part and the pitch of the screw thread of which is substantially greater than the pitch of the screw thread of the first threaded part, with the result that when the second nut engages with the second threaded part, it is displaced more quickly than the first nut and quickly actuates the switch. This improvement enables the accuracy of the halting of the motor to be increased, independently of the size of the pitch of the first threaded part, in other words independently of the length of this threaded part, in other words independently of the size of the device.
    • 一种滑动齿轮螺母在螺杆上移位的装置,其中一个由被控制的马达旋转驱动,滑动齿轮螺母在其运行结束后致动开关 确定电机的转速。 滑动齿轮螺母是一体旋转的,第二螺母旨在与位于第一螺纹部分的端部处的第二螺纹部分相互作用,直径大于第一螺纹部分的直径和螺纹的螺距 其大大地大于第一螺纹部分的螺纹螺距,结果是当第二螺母与第二螺纹部分接合时,其比第一螺母更快地移动并且快速致动开关。 这种改进使马达停止的精度与第一螺纹部分的螺距大小无关,换句话说,与螺纹部分的长度无关,换句话说,与设备的尺寸无关 。