Sealing cover and container device having the same

A container device, comprising:

• a box;
• and
• a sealing cover, covering on the box, and further comprising:
• an upper cover, comprising an accommodating space, an abutting surface disposed on a side in the accommodating space, and a press switch installed on another side of the accommodating space;
• a lower cover, elastically and movably coupled to the upper cover, and configured to move in an upward-downward direction relative to the upper cover, comprising a linkage seat disposed thereon, the linkage seat comprising an arm disposed protrusively, a pivot hole defined on the arm, wherein a sealing ring sheathed on the lower cover;
• and
• a trigger, disposed on the accommodating space, comprising a pivot disposed on one end thereof and a buckle disposed on another end thereof, the pivot pivotally mounted to the pivot hole, the buckle disposed corresponding to the press switch, and the trigger further comprising a protrusion disposed near the pivot and protruding substantially in a same direction with the buckle;
• wherein, when the trigger covers the accommodating space, the buckle is buckled to the press switch to make the protrusion abut against the abutting surface to lift the linkage seat together with the lower cover toward the upper cover;
• when the press switch releases the buckle, the trigger flips up by the pivot acting as an axis of rotation, and the protrusion is detached from the abutting surface to push the lower cover away from the upper cover.