Dual-spring dual-rope roller blind controller

A dual-spring dual-rope roller blind controller configured to be mounted at a roller blind and connected to a rotating shaft of the roller blind;

• the dual-spring dual-rope roller blind controller comprising:
• a housing having
• an assembling chamber disposed inside the housing;
• a shaft hole disposed at a center of the housing and spatially communicating with the assembling chamber;
• two through holes respectively disposed at two sides of a bottom portion of the housing;
• a roll-and-collect module comprising
• two roll-and-collect assemblies being identical in structure and disposed in the assembling chamber of the housing;
• each one of the roll-and-collect assemblies comprising
• a collecting disc rotatably mounted inside the assembling chamber of the housing, being moveable up and down, and having
• a collecting recess disposed at a periphery of the collecting disc;
• a clutch opening disposed at a center of the collecting disc;
• and
• a ratchet toothed portion disposed at an inner surface of the clutch opening and surrounding the clutch opening;
• a rope rolled up, disposed in the collecting recess of the collecting disc, and extending through one of the two through holes of the housing;
• a resilient roll-and-collect element connected between the collecting disc and the housing, and driving the collecting disc to rotate back to the collecting disc's original angle;
• a resilient abutting element mounted at a bottom portion of the assembling chamber and abutting the collecting disc to push the collecting disc back to the collecting disc's original position;
• the two roll-and-collect assemblies arranged opposite each other to make the two ropes of the two roll-and-collect assemblies rolled up in opposite directions;
• a driving shaft comprising
• a shaft rod mounted through the shaft hole of the housing;
• a driving wheel rotatably mounted around the shaft rod and passing through the two clutch openings of the two collecting discs of the two second roll-and-collect assemblies;
• the driving wheel comprising
• two wheel ratchet portions having different rotatable directions and respectively corresponding in position to the two ratchet toothed portions of the two collecting discs of the two roll-and-collect assemblies;
• each one of the two wheel ratchet portions engaged with or detached from the corresponding ratchet toothed portion;
• a connecting portion configured to be connected to the rotating shaft of the roller blind;
• and
• a positioning disc extending radially and outwardly from between the two wheel ratchet portions and located between the two roll-and-collect assemblies.