Laundry treating apparatus

A laundry treating apparatus comprising:

• a cabinet that defines an exterior of the laundry treating apparatus;
• a tub configured to receive water;
• a drum rotatably disposed in the tub and configured to receive laundry;
• an agitator rotatably disposed in the drum;
• a driving system disposed below the agitator and configured to rotate at least one of the drum or the agitator, the driving system comprising a rotating shaft coupled to the agitator;
• and
• a vertically-movable assembly disposed between the agitator and the driving system and coupled to the agitator, the vertically-movable assembly being configured to vertically move based on being separated from the rotating shaft,
• wherein the vertically-movable assembly comprises a vertically-movable body configured to contact the agitator and defines a shaft-receiving hole receiving the rotating shaft, the shaft-receiving hole penetrating through the vertically-movable body,
• wherein a diameter of the shaft-receiving hole is greater than a diameter of the rotating shaft such that an inner circumferential surface of the shaft-receiving hole is spaced apart from the rotating shaft,
• wherein the agitator comprises:
• a guide tube that extends from a bottom portion of the agitator and contacts the inner circumferential surface of the shaft-receiving hole, the guide tube being configured to guide a vertical movement of the vertically-movable body,
• wherein the guide tube defines a first air gap below the agitator, the first air gap being configured to block water from entering into the driving system,
• wherein the vertically-movable assembly is configured to:
• based on a water level in the tub being above a reference water level, rotate the agitator independently of the drum, and
• based on the water level in the tub being below the reference water level, decouple from the agitator and rotate the agitator and the drum in a same direction, and wherein the laundry treating apparatus further comprises:
• a fixed ring coupled to a distal end of the guide tube and configured to contact a bottom portion of the shaft-receiving hole, the fixed ring being configured to restrict the vertically-movable assembly from being detached from the guide tube.