Cover device for a drink container
A cover device ( 2 ) for a drink container comprises a basic assembly ( 9 ) which is provided with a drink opening ( 32 ), and a valve arrangement ( 20 ) for blocking or unblocking a passage to the drink opening ( 32 ) from a drink container side of the cover device ( 2 ). The valve arrangement ( 20 ) comprises a valve element ( 26 ) having two portions ( 27, 28 ) which are connected to each other through an area of the valve element ( 26 ) at a position where the valve element ( 26 ) is hingably associated with the basic assembly ( 9 ), the valve element ( 26 ) has a slit ( 42 ), and at least one of the valve element ( 26 ) and the connecting member ( 37 ) is shaped in such a way that the tighter the valve element ( 26 ) is pushed onto the connecting member ( 37 ), the more firmly the slit ( 42 ) is closed.
1. A cover device for a drink container, the cover device comprising:
a basic assembly including a housing and a spout which comprises at least one drink opening; and
a valve arrangement adapted to prevent liquid from flowing from an interior of the drink container to outside of the drink container through the cover device in a closed state and to allow a flow of liquid to pass through in an open state,
the valve arrangement comprising a valve element, and a ring-shaped connecting member,
wherein the valve element has a slit, and wherein the valve element is arranged at the base of the spout such that such that the ring-shaped connecting member contacts the valve element to realize a hinge contact between the valve element and the ring-shaped connecting member to allow for changes in the position and orientation of the valve element in the cover device when pressure is exerted,
wherein the basic assembly has a connecting member for locally supporting the valve element at a position between an inner periphery and an outer periphery of the valve element, and wherein at least one of the valve element and the connecting member is shaped in such a way that the tighter the valve element is pushed onto the connecting member when an increased pressure acts on the valve element in a direction of the drink opening, the more firmly the slit is closed.
2. The cover device according to claim 1 , wherein the valve element has a slanted shape at a location of the connecting member, wherein the slanted shape at least partially extends beyond a part of the valve element that overlaps with the connecting member in a rest position.
3. The cover device according to claim 2 , wherein the valve element has more than one strengthening ribs that provide the valve element with the slanted shape.
4. The cover device according to claim 3 , wherein the strengthening ribs are rotational symmetrically arranged around a center of the valve element.
5. The cover device according to claim 1 , wherein the connecting member has a slanted slope that at least partially extends beyond a part of the connecting member that overlaps with the valve element in a rest position.
6. An assembly of a drink container and a cover device according to claim 1 , wherein the cover device is removably attached to the drink container.