Ventilation device, cover body and container comprising cover body

Abstract

The invention provides a ventilation device. The ventilation device comprises an air channel and a rotary ventilation rod. The air channel comprises a first end facing the peripheral face of the rotary ventilation rod and a second end deviating from the rotary ventilation rod; a concave vent groove in fluid communication with ambient air is formed in the outer circumferential surface of the rotary ventilation rod, and the rotary ventilation rod can rotate around a rotation axis extending in the longitudinal direction of the rotary ventilation rod, so that a ventilation state and a sealing state are provided; in the ventilation state, at least one part of the vent groove of the rotary ventilation rod is in fluid communication with the air channel; and in the sealing state, the vent groove of the rotary ventilation rod is not in fluid communication with the air channel, and the first end of the air channel is sealed by the peripheral face of the rotary ventilation rod. The ventilation device is easy to manufacture and assemble. The invention further relates to a cover body comprising the ventilation device and a container comprising the cover body.

Description

technical field [0001] The invention belongs to the field of daily necessities, and in particular relates to a ventilating device for a container, a cover containing the venting device for ventilating the container, and a container with the ventilating function including the cap. Containers using the venting device of the present invention are, for example, bottles, cups, cans, boxes, etc., especially drinking cups for children such as sippy cups. Background technique [0002] The container used in daily life often closes the opening of the main body for containing the contents through the lid. When the lid is closed, the inner cavity of the container generally forms a relatively airtight space. For example, when the content of the container is liquid with strong fluidity, when the temperature and / or pressure in the inner cavity is relatively high, the content is likely to splash out from the opening of the main body when the lid is opened. [0003] Especially for drinking...

AI Technical Summary

Problems solved by technology

Particularly, in this type of beverage container, the front end of the drinking tube extends into the liquid beverage, so there is a problem that when the liquid beverage is warmed, the air inside the container is heated, so that the internal pressure rises, and when the liquid beverage is passed through the suction The drinking tube is squeezed by the air pressure, which will easily cause the hot liquid drink to be ejected from the drinking port

[0005] This kind of ventilation device has a great influence on the structure of the cover body, especially the shielding part of the cover body, and the joint between the valve core and the vent hole will cause the uneven movement of the cover body and increase the difficulty of opening and closing the cover body

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