| 摘要 |
A negative-pressure-resistible leakage-proof bottle cover, wherein a leakage-proof gasket is disposed. A circular main body of the leakage-proof gasket is stuck onto inner top face of a cover body, wherein an extended positioning circumferential edge is commensurate with a confining stopper of the cover body. The bottom face of the leakage-proof gasket is extended to form an infiltration resister, whereof the open end is further extended in out-and- up direction to form an infiltration-resisting ring. At lower portion of the cover body, an anti-burglar ring is arranged, wherein a plurality of seamless cutting lines is round-set and a bridge point is formed in each of the seamless cutting lines. In the anti-burglar ring, a plurality of protruded stopping pieces is disposed, wherein between two neighboring protruded stopping pieces, a consecutive wall is extended from inner edge of the anti-burglar ring, and further, the consecutive wall is pinched by and connected to two neighboring protruded stopping pieces. Hence, the bridge point of the anti-burglar ring will not be fractured easily when sealing, and the structural strength of the protruded stopping pieces is firm and dependable. The structure of the bottle cover as described above can provide a dual-stage leakage-proving and negative-pressure-resisting function.
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