Pop-up-proof cork

Abstract

The invention relates to a pop-up-proof cork, in particular to a cork for a thermos bottle. An annular concave surface (16) is arranged at the middle part of the outer edge surface of an inner cylinder (18), and at least three openings (12) are arranged between the annular concave surface and the lower part of an inner-cylinder round hole (11). Top blocks (13) are respectively arranged at the outer parts of the at least three openings, and the lower end of an expanded control rod (5) is pressed on a spring (7). The outer surface of a compression column (4) is positioned in a light hole (2) of an external threaded pipe (3), and the external threaded pipe is connected with an internal thread (8) arranged at the upper part of the round hole. V-shaped grooves (6) are arranged in the upper middle part of the outer edge surface of the expanded control rod, and the V-shaped grooves (6) of the expanded control rod correspond to V-shaped bulges (5) of the top blocks after the spring is compressed. An inner ring (19) of a rubber sleeve (22) is sheathed on an annular groove (10) of the inner cylinder. According to the invention, the top blocks are controlled through the expanded control rod, so that annular raised bars lock a bottle neck, and the cork cannot pop up.

Description

【Technical field】 [0001] The invention relates to a cork for a thermos bottle, in particular to an anti-popping cork. 【Background technique】 [0002] As known, thermos bottle is used as a kind of water temperature protection container in many families or office places. When the hot water filled in the bottle liner of the thermos bottle is poured out, a certain space is formed in the bottle liner. The steam expanding in time and space will cause the wooden bottle cork to jump; at this time, the pressure in the bottle liner is greater than atmospheric pressure, so the cork cannot resist the pressure of the hot air in the bottle, causing the cork to jump up and the hot water in the bottle liner to cool down quickly The bottle stopper of the commercially available thermos bottle is a cork material, which is conical with a large upper part and a smaller lower part. The bottle mouth of the thermos bottle liner with poor workmanship is a non-circular structure, and it will not be ...

AI Technical Summary

Problems solved by technology

[0002] As known, thermos bottle is used as a kind of water temperature protection container in many families or office places. When the hot water filled in the bottle liner of the thermos bottle is poured out, a certain space is formed in the bottle liner. The steam expanding in time and space will cause the wooden bottle cork to jump; at this time, the pressure in the bottle liner is greater than atmospheric pressure, so the cork cannot resist the pressure of the hot air in the bottle, causing the cork to jump up and the hot water in the bottle liner to cool down quickly The bottle stopper of the commercially available thermos bottle is a cork material, which is conical with a large upper part and a smaller lower part. The bottle mouth of the thermos bottle liner with poor workmanship is a non-circular structure, and it will not be able to keep warm when it is subjected to the hot air pressure in the bottle. When using a cork material cork, it needs to be pressed down hard to deform the cork. Form a structure that matches the bottle mouth. At this time, once the thickness of the bottle liner is uneven, "sometimes there will be cracks", which will cause the bottle liner to burst

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