Water cup with self-locking function

A water cup with a self-locking function, comprising a cup body, and further comprising:

• a suction nozzle portion, the suction nozzle portion being threadedly connected to a cup mouth of the cup body, and the suction nozzle portion being mounted with limit teeth and an outlet pipe connected to an interior of the cup body;
• a casing, the casing being rotatably sleeved on the suction nozzle portion, and the outlet pipe running through the casing to outside;
• the casing being internally mounted with a horizontally sliding clamping plate, the clamping plate being arranged with a limit buckle and a toggle block, the limit buckle corresponding to the limit teeth, the toggle block running through the casing to outside, and the toggle block being toggled to drive the limit buckle to be clamped with or disengaged from the limit teeth;
• and the casing being further arranged with a snap position;
• and
• a cup cover, the cup cover being mounted on the casing and the cup cover being mounted with a signal receiving unit, a driving member and a snap, the signal receiving unit being electrically connected to the driving member, and the driving member being connected to the snap in a driving manner;
• and the cup cover, when closed to the casing, blocking the outlet pipe and enclosing the toggle block, and the driving member being capable of driving the snap to be clamped with the snap position according to an instruction from the signal receiving unit, to fix the cup cover to the casing.