Moving siphon pipe driving device in a flushing pot

An apparatus for operating a variable siphon tube for use in a gravity tank toilet including a toilet bowl and a water tank, comprising:

• a pressing tube in the form of a bellows tube, the pressing tube being installed at a rear side of the bowl and communicated in fluid with a water supply passage;
• a tightening ring consisting of two semicircular rings combined with each other for tightly coupling the top of the pressing tube with a connection neck of the water supply passage, said tightening ring including first hooks provided at both sides thereof;
• a bracket coupled with a bottom surface of the pressing tube, said bracket including second hooks provided at both sides thereof and fitting holes formed at a lower end portion of the second hooks;
• return springs, each of which being connected to the first hook by one end thereof and the second hook by the opposite end;
• a variable siphon tube including an inlet formed at one end, an outlet formed at the opposite end and a bend formed at a mid portion thereof, said inlet having a first bellows tube connected to a discharge port of the bowl, said outlet having a second bellows tube connected to a toilet waste discharge tube, said bend being formed with hinge shafts at both lateral sides thereof, said hinge shafts being fitted into the fitting holes, respectively;
• and
• a connection tube for connecting the pressing tube and the variable siphon tube.