| 摘要 |
PURPOSE: A winding device for a roll screen is provided to reduce manufacturing costs by eliminating a torsion spring and core rod installed inside a roll. CONSTITUTION: A winding device for a roll screen comprises a rotary shaft(20), four planetary gears(30), a speed reduction rotary shaft(40), an outer shell(50), a support flange(60), a cap(70), and a plate coil spring(80). A bar-shaped roll for winding a roll screen is fixed to one end of the rotary shaft. A sun gear(25) is formed in the other end of the rotary shaft. The planetary gears are in gear with the sun gear. The speed reduction rotary shaft is rotated with the planetary gears. The outer shell has internal gears(51) which are in gear with the planetary gears. The support flange is screwed on the outer shell and supports the speed reduction rotary shaft. The cap is installed in the end of the speed reduction rotary shaft. The plate coil spring is fixed to the rotary shaft(46) of the speed reduction rotary shaft and a cylindrical spring fixture(57). |
