| 摘要 |
The present invention relates to a dual blind driving device including: a winding part made up by first and second winding bars for separately winding first and second screens including a shielding part and a light transmission part; a driving part joined to each winding bar of the winding part to rotate the winding bars driven by a ball chain; and a fixating part including a fixating piece and a fixating shaft to support the driving part. According to the present invention, the dual blind driving device adjusts the opening and closing and light transmission of a roll screen with the operation of a single ball chain. In addition to this, the dual blind driving device minimizes malfunction; allows a reliable operation; is easy to produce by simplifying the structure; reduces production cost; and has excellent durability. |
