Detachable pressure release mechanism of lid of vacuum cup

Abstract

The present invention discloses a detachable pressure release mechanism of a lid of a vacuum cup. The lid is fixed to an outer side of a rim of a cup body through a thread. A sealing device is fixed to the top inside the lid. The sealing device comprises a vertical tube. A sealing ring cooperated with an inner wall of the rim of the cup body is fixed at the bottom of a side wall of the vertical tube. The bottom orifice of the vertical tube is provided with an end plate. The center of the end plate is provided with a through hole. The end plate, at one side of the through hole, is provided withvents communicating the inside of the vertical tube and the bottom of the vertical tube. A valve block is disposed in the through hole. The top of the valve block is provided with a leading-in head.The leading-in head passes through the through hole and is positioned in the vertical tube. The bottom of the valve block is provided with a valve plate. The vents are positioned in the scope of the valve plate. According to the structure of the detachable pressure release mechanism of a lid of a vacuum cup, the lid of the vacuum cup is prevented from being opened difficultly due to negative pressure in the cup body during an opening process while the insulation effect of the vacuum cup is ensured, thereby reducing opening difficulty and increasing opening convenience.

Description

technical field [0001] The invention relates to the technical field of a thermos cup, in particular to a detachable pressure relief mechanism for a thermos cup lid. Background technique [0002] Vacuum cup is generally a water container made of ceramic or stainless steel with a vacuum layer. It has a cover on the top and is tightly sealed. The vacuum insulation layer can delay the heat dissipation of water and other liquids inside to achieve the purpose of heat preservation. . [0003] The thermos cup is developed from the thermos bottle. The principle of heat preservation is the same as that of the thermos bottle, but people make the bottle into a cup for convenience. [0004] After the thermos cup is covered, there is still a distance between the liquid surface in the thermos cup and the cup cover. There will be a lot of water vapor in the air in this space. When the water vapor condenses into small water droplets, it will cause the space The reduction of the amount of g...

AI Technical Summary

Problems solved by technology

[0004] After the thermos cup is covered, there is still a distance between the liquid surface in the thermos cup and the cup cover. There will be a lot of water vapor in the air in this space. When the water vapor condenses into small water droplets, it will cause the space The reduction of the amount of gas inside, coupled with the sealing effect of the thermos cup, causes the air pressure in the space to be lower than the external atmospheric pressure to form a negative pressure, so that when the thermos cup lid is opened again, it is affected by the negative pressure, which leads to the opening of the cup lid. hard to even open

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