Dual-flush toilet device

A dual-flush toilet device comprising:

• an outer casing comprised of a first casing body and a second casing body, wherein the first casing body has a receiving space and a first axle hole penetrates the center of the first casing body thereof;
• the second casing body is disposed of a second axle hole at the inner surface thereof;
• a gear set comprising a first gear, a second gear, a third gear and a fourth gear;
• a ring disk set comprising a ring disk body, a spring and an arc-shaped pushing seat, wherein the ring disk body has a rounded hole at the center thereof and a plurality of supporting pieces are disposed along the periphery edge of the ring disk body;
• an arc-shaped chamber is provided at the top surface of the ring disk body, wherein a fixing column is convexly disposed at one side of the arc-shaped chamber and fits with the spring;
• the arc-shaped pushing seat is disposed inside the arc-shaped chamber and pushed by the spring;
• a connecting rod set comprising:
• a connecting rod head comprising a connecting rod extending from the periphery edge of a rounded main body, wherein the rounded main body comprises a fourth axle hole and a notch, and at least one first convex rib is disposed on the inner wall of the fourth axle hole 512;
• a driving wheel having a gear part disposed at one side and a rounded body disposed at the other side thereof, wherein at least one second convex rib is provided along the periphery edge of the rounded body;
• and
• a stop seat having a stop piece and at least one third convex rib are disposed along the periphery edge thereof;
• a drive set comprising:
• a first toilet flushing handle, wherein a handle body extends from the periphery edge of a plate body, and a first rod body extends from the center of the plate body;
• a second toilet flushing handle, wherein a handle body extends from the periphery edge of a plate body and an axle hole penetrates the center of the plate body thereof to allow the insertion of the first rod body;
• a second rod body extends from the outer wall of the axle hole of one side of the plate body;
• a fixing axle cover having an axle hole penetrating the center thereof to allow insertion of the second rod body;
• one side of the fixing axle cover provides a cylinder and another side of the fixing axle cover has an external thread section;
• a drive rod having an external thread section at one end thereof and the other end of the drive rod inks to the first rod body;
• a cistern fixing nut screw locked to the external thread section of the fixing axle cover;
• and
• a fixing rotate screw having an inner thread hole to allow screw locking with the external thread section of the drive rod.