Water Bottle and Leakproof Cap for Water Bottle

Abstract

A leakproof cap of a soft water bottle and a water bottle are disclosed. The leakproof cap includes a cap body having an installation cavity with a screw thread circumferentially arranged on a side of the installation cavity, and a sealing member annularly arranged on another side of the installation cavity that is opposite to the screw thread at a predetermined distance. The sealing member is an elastic sealing member and a side of the sealing member facing the screw thread has a plurality of sealing rings. The sealing rings are arranged concentrically and evenly, and a sealing cavity is formed between adjacent sealing rings. When the bottle opening deforms following the bottle body, the sealing member adapts to the deformation and blocks the liquid through the plurality of sealing rings.

Dependencies are inferred from the claim text.