Connecting structure for liquid container

A connecting structure for use with a liquid container, comprising:

• a receiving groove;
• the liquid container disposed in the receiving groove, wherein a top end of the liquid container has a suction tube;
• and
• a locking structure comprising a connecting base, a locking assembly, two swinging arms, and a sleeve, wherein the connecting base is engaged with a top side of the receiving groove;
• a left side and a right side of the connecting base respectively have a side plate, and a left side and a right side of the locking assembly respectively have a side arm, wherein a rear end of each of the two side arms is pivotally connected to a front side of one of the two side plates;
• the two side arms extend along a front-rear direction and extend frontwards out of the connecting base, wherein two front ends of the two side arms are connected to a pressing plate;
• a liftable base is disposed between the two side plates and has a bottom frame;
• the liftable base moves along a top-bottom direction in the connecting base and moves along the front-rear direction in the connecting base;
• two extending arms respectively extend frontwards along the front-rear direction out of a left side and a right side of the bottom frame;
• a front end of each of the two extending arms is pivotally connected to a front side of each of the two side arms;
• the left side and the right side of the bottom frame are respectively and pivotally connected to the front end of each of the two swinging arms;
• a rear end of each of the two swinging arms is pivotally connected to a rear side of one of the two side plates;
• the sleeve is engaged with the bottom frame and fits around the suction tube.