Linear step motor type driving apparatus for driving a longitudinally movable body

摘要

A driving assembly for a horizontally-moving vertically-suspended body, for example a curtain, comprises a moving element disposed in a channel of a rail. The moving element is mounted with an electromagnet which receives either discrete pulses or continuous current for an electrical linear step motor. Coils of the electromagnet produce a magnetomotive force operable to cause a row of pole teeth of the magnet to repulse a corresponding opposed scale connected to the channel, thereby moving the moving element in the channel.