Liquid injection sealing structure

Abstract

The liquid injection sealing structure comprises a top cover plate, and a liquid injection opening is formed in the top cover plate; the sealing rubber nail comprises a pressing base part, a plunger part and a pressurizing part, the pressing base part is provided with a connecting surface, the plunger part is connected to the connecting surface, the connecting surface is provided with a pressing sealing part exceeding the peripheral surface of the plunger part, the plunger part is inserted into the liquid injection opening and is in close fit with the side wall of the liquid injection opening, and the pressurizing part is connected to the plunger part. The size of the pressing sealing part is larger than that of the liquid injection opening, the pressing sealing part seals and presses the plate face, surrounding the periphery of the liquid injection opening, of the top cover plate, and the pressurizing part is arranged on the side face, away from the plunger part, of the pressing base part; and the sealing nail is arranged on the top cover plate and located outside the sealing rubber nail, and the sealing nail abuts against the pressurizing part.

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