Patent ID: 8302823

Claim:
An anti-leak device for a tube container, comprising: a main body including a head disposed at an end thereof and formed with a tube outlet through which contents in the tube container are extruded by a compression force, and a connection groove; and a leakage prevention unit connected to the connection groove formed at the head, including an opening and closing part, an insertion part and a fixed part to prevent leakage of the contents after extrusion of contents is completed, wherein one end of the opening and closing part is inserted in one end of an inlet path of the insertion part having drain grooves formed on an inner surface at predetermined intervals, the insertion part is inserted in one side of the fixed part having a discharge hole and engaged with the connection groove, thereby forming a movement space wherein the opening and closing part can be reciprocated between the tube outlet and the insertion part, and the opening and closing part directly opens and closes the tube outlet within the movement space so that external air is not allowed into the main body through the tube outlet, wherein the opening and closing part comprises an opening and closing rib formed in the middle thereof to open and close the tube outlet, and the opening and closing rib includes supporting pins formed collinearly at each end of the opening and closing part with respect to the opening and closing rib, to be inserted in the tube outlet and in the insertion part, respectively, wherein diameter of the opening and closing rib is greater than diameter of the tube outlet but smaller than diameter of the movement space.