Patent ID: 7866367

Claim:
A control device for blinds, comprising: a transmission unit adapted to be received in a box of the blinds and having a case, a coil spring and a gear unit, the coil spring having a first end connected to the gear unit and a second end of the coil spring fixed within the case; a scrolling unit adapted to be received in the box of the blinds and having two scrolling rods and a transmission rod, each scrolling rod having a lift cord wrapped thereon which is adapted to extend through slats of the blinds, the transmission rod securely extending through the gear unit so as to rotate with the two scrolling rods; the case includes two posts extending therefrom, the gear unit including a first bevel gear, a second bevel gear, a first spur gear, a second spur gear and a third spur gear, the transmission rod extending through the first bevel gear which is engaged with the second bevel gear, the second bevel gear being co-axially connected with the first spur gear, the first and third spur gears mounted to the posts of the case, respectively; the case including a separation board located therein and the separation board including a first slot and a second slot defined therethrough, the first and second slots being elongate slots, the two posts extending through the first and second slots, a protrusion extends from a top of the separation board and the second spur gear mounted on the protrusion, the first spur gear located above the first slot and the third spur gear located above the second slot, and the separation board including two insertions extending from two sides of an underside thereof, the case including two engaging recesses defined in an inside of each of two sidewalls thereof, a positioning plate located between the two engaging recesses, the insertions adjustably inserted in the engaging recesses of the case and contact against the positioning plate so as to adjust the position of the separation board relative to the two posts.