| 摘要 |
PURPOSE: A driving motor of a shutter manually operated with pulling is provided to raise a shutter with a simple operation that pulls a coil chain. CONSTITUTION: A cover plate(50) is supported at a predetermined distance with a support bolt installed in a driving motor(30). A drive wheel(10) is located inside the cover plate and elastically supported with a spring to separate from the driving motor. A coil chain(20) is wound on the driving wheel to guide the rotation of the drive wheel. A rotary shaft is installed on the inner side of the cover plate A cam is inserted to the rotary shaft and rotated to guide the movement of the drive wheel. A guide pipe is located in a radial direction outside the cam and embedded with a tightening bolt for controlling the rotation of the cam. |
