| 摘要 |
PURPOSE: A dual roll blind is provided to control the length of a roll screen which can be rolled in a winding toll by separating a gear from two winding rolls. CONSTITUTION: A dual roll blind comprises a first screen, a second screen, a first rolling rod(61), a second rolling rod(62), a first gear, a second gear(30), a mashing unit, a clutch body and a setting hole. The first screen and second screen respectively include a light-transmitting part and a light shielding part. A first rolling rod and second rolling rod respectively reel the first screen and second screen. The first gear rotates the first rolling rod. The mashing unit transfers elastic force to one of the first and second gears. The setting hole is formed on the opposite location of the clutch body. |
