Closing Unit

Abstract

A closing unit for closing a throughflow opening provided in a wall of a container, comprising: an inner closing element configured to be mounted on the edge of the wall all around the throughflow opening, wherein the inner closing element is further configured to connect in mounted position against at least the inner side of the wall and is provided with a passage for the content of the container; an outer closing element configured to be coupled releasably to the inner closing element for the purpose of closing the passage provided therein; wherein both the inner closing element and the outer closing element comprise a screw thread coupling for screwing the outer closing element onto the lower closing element; wherein the outer closing element comprises a peripheral press-on edge which is embodied to clamp the outer closing element against the outer side of the wall of the container when screwing.

1 . A closing unit for closing a throughflow opening provided in a wall of a container, particularly a beverage container such as a can, the closing unit comprising:
 an inner closing element which is configured to be mounted on an edge of the wall all around the throughflow opening provided therein, wherein the inner closing element is further configured to connect in mounted position against at least an inner side of the wall and is provided with a passage for content of the container;   an outer closing element which is configured to be coupled releasably to the inner closing element for closing the passage provided therein;   wherein both the inner closing element and the outer closing element comprise a screw thread coupling for screwing the outer closing element onto a lower closing element;   wherein the outer closing element comprises a peripheral press-on edge which is embodied to clamp the outer closing element against an outer side of the wall of the container when screwing.   
     
     
         2 . The closing unit as claimed in  claim 1 , wherein the outer closing element comprises a cylindrical outer component with screw thread and the inner closing element comprises a cylindrical inner component with screw thread, wherein the outer component can be screwed into the inner component for forming a first closure of the container, and wherein the outer closing element comprises a cap provided with the peripheral press-on edge for forming a second closure of the container. 
     
     
         3 . The closing unit as claimed in  claim 2 , wherein the cap is embodied to clamp in screwed position fixedly onto an upper side of the wall of the container and form a covering of the inner closing element and the outer closing element. 
     
     
         4 . The closing unit as claimed in  claim 2 , wherein the cap with peripheral press-on edge is embodied to cover in screwed position the peripheral edge of the wall all around the throughflow opening. 
     
     
         5 . The closing unit as claimed in  claim 1 , wherein the inner closing element is embodied to snap fixedly onto the peripheral edge of the throughflow opening provided in the wall of the container. 
     
     
         6 . The closing unit as claimed in  claim 1 , wherein the outer closing element comprises a support part and a pull-twist element, wherein the pull-twist element is pivotally connected to the support part via a linear hinge element and wherein the hinge element extends through a rotation point of the support part. 
     
     
         7 . The closing unit as claimed in  claim 6 , wherein the pull-twist element is pivotable between a lying starting position in which it extends substantially parallel to an upper surface of the support part and an upright operating position in which it extends at an angle relative to the upper surface. 
     
     
         8 . The closing unit as claimed in  claim 1 , wherein the screw thread takes a multi-thread form and is further embodied to couple or uncouple the closing elements over essentially the whole periphery with a rotation of the closing elements relative to each other over an angle of less than 180 degrees, preferably less than 90 degrees, still more preferably less than 50 degrees. 
     
     
         9 . The closing unit as claimed in  claim 1 , wherein the screw thread coupling takes a self-braking form and/or wherein the screw thread coupling is embodied so that, essentially irrespective of a magnitude of an axial force exerted on the closing element, the closing element will not unscrew of its own accord. 
     
     
         10 . The closing unit as claimed in  claim 1 , wherein the outer closing element is manufactured from elastic material and comprises a hollow space, which in closed position is in connection with the content of the container. 
     
     
         11 . The closing unit as claimed in  claim 1 , comprising a tamper evident provision. 
     
     
         12 . The closing unit as claimed in  claim 1 , wherein the peripheral press-on edge comprises a cylindrical, axially extending flange which is embodied to press in screwed position with a lower edge against a flat upper side of the wall of the container. 
     
     
         13 . The closing unit as claimed in  claim 12 , wherein the cylindrical flange has a diameter greater than the diameter of the rest of the closing unit. 
     
     
         14 . The closing unit as claimed in  claim 12 , wherein during use the cylindrical flange wholly surrounds a mounting part and/or surrounds an annular conical edge all around the throughflow opening. 
     
     
         15 . A wall for a container, particularly a beverage container such as a can, wherein the wall has a throughflow opening and is further embodied for mounting of a closing unit as claimed in  claim 1 . 
     
     
         16 . The wall as claimed in  claim 15 , comprising an upright peripheral edge all around the throughflow opening, wherein the upright peripheral edge preferably extends at least partly obliquely relative to a remaining part of the wall and/or has a partially convex form in cross-section. 
     
     
         17 . Container, particularly a beverage container such as a can, wherein the container has a wall with a throughflow opening for beverage and is further embodied for mounting of a closing unit as claimed in  claim 1 .