Sealing cover

Abstract

The invention provides a sealing cover which is mainly composed of a top cover, a pull ring, a fixed ring, an anti-leakage cushion ring, a sealing ring and a movable pull sleeve. The pull ring is fixedly arranged in an accommodating chamber of the top cover, the fixed ring is arranged in the accommodating chamber of the top cover, the anti-leakage cushion ring is arranged on the upper portion of the fixed ring in a sleeved mode, the sealing ring is arranged below the fixed ring, the movable pull sleeve penetrates through the sealing ring and the fixed ring, and a guide convex body of the movable pull sleeve is embedded into in a guide groove of the pull ring. Accordingly, when the top cover is rotated, the pull ring drives the movable pull sleeve to move upwards and squeeze the sealing ring to generate outward expansion, so that the sealing ring is sealed on an opening of a container, and the sealing effect is achieved.

Description

technical field [0001] The invention relates to a sealing cover, especially refers to that by rotating the top cover, the pulling ring drives the movable pull sleeve to move upwards, and squeezes the sealing ring to expand and expand outwards, so that the sealing ring can be sealed on the opening of the container, which can truly achieve The effect of sealing. Background technique [0002] It is generally used to cover the sealing cover on the container, such as the sealing cover on the cup. Most of them are provided with a boss in the center of the cover body. The inner thread of the inner thread is screwed, and a sealing ring is set on the lower end of the boss. In this way, by rotating the lid, the lid is screw-locked on the opening of the container, and by virtue of the sealing of the lower end of the boss of the lid The ring is closely attached to the inner wall surface of the container to form a sealing effect on the container. However, the sealing ring on the existin...

AI Technical Summary

Problems solved by technology

[0002] It is generally used to cover the sealing cover on the container, such as the sealing cover on the cup. Most of them are provided with a boss in the center of the cover body. The inner thread of the inner thread is screwed, and a sealing ring is set on the lower end of the boss. In this way, by rotating the lid, the lid is screw-locked on the opening of the container, and by virtue of the sealing of the lower end of the boss of the lid The ring is closely attached to the inner wall surface of the container to form a sealing effect on the container. However, the sealing ring on the existing sealing cover rotates with the cover body, and then is closely attached to the inner wall surface of the container. When the cover body rotates , the sealing ring is prone to friction with the inner wall surface of the container, so it is easy to wear and tear under long-term use, which leads to the fact that the cover cannot achieve a reliable sealing effect when the cover is set on the container, and the liquid contained in the container will have external Therefore, in view of the above-mentioned defects in the use of the sealing caps that are generally used to cover the containers, the present inventors devoted themselves to research and improvement, and then were able to create the present invention for the first time.

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