Closing element for containers

Abstract

A closing element ( 100 ) made of a plastic material for containers ( 1 ) for liquids comprising a mouth ( 2 ) for dispensing the beverage and defined by the neck ( 3 ) of the container ( 1 ) with an annular bead ( 4 ). The element ( 100 ) comprises a first, outer body ( 5 ) with a circular-cylindrical shape, defined by an upper surface ( 6 ) and a lower annular liner ( 7 ) made as a single piece, plus a plurality of projecting pins ( 8 ), arranged evenly on the inner part of the annular liner ( 7 ); and a second, inner body ( 9 ) with a circular-cylindrical shape, which can be inserted in the first body ( 5 ) and has cams ( 10 ) on its own outer annular surface ( 11 ), being designed, in conjunction with the pins ( 8 ), to allow a stable minimum radial dimension configuration, or tightening, of the second body ( 9 ), by the radial thrust of the pins ( 8 ), and a maximum radial dimension configuration, by unique rotation of the first body ( 5 ) about the second body ( 9 ), with radial opening of the second body ( 9 ) relative to the first body ( 5 ).

1 . A closing element ( 100 ) made of plastic for containers for liquids, the container ( 1 ) comprising a mouth ( 2 ) for dispensing the beverage and defined by a neck ( 3 ) of the container ( 1 ), the neck ( 3 ) having an annular bead ( 4 ), the closing element being characterised in that it comprises: 
 a first, outer body ( 5 ) with a circular-cylindrical shape and defined by an upper surface ( 6 ) and a lower annular liner ( 7 ) made in a single piece, the first body ( 5 ) also having a plurality of projecting pins ( 8 ), evenly arranged on the inside of the annular liner ( 7 );    a second, inner body ( 9 ) with a circular-cylindrical shape, which can be inserted in the first body ( 5 ) and has cams ( 10 ) on its own, outer surface ( 11 ) designed, in conjunction with the pins ( 8 ) of the first body ( 5 ), to allow a stable minimum radial dimension configuration, or tightening, of the second body ( 9 ), by the radial thrust of the pins ( 8 ), and a maximum radial dimension configuration, by unique rotation of the first body ( 5 ) about the second body ( 9 ), with radial opening of the second body ( 9 ) relative to the first body ( 5 ).    
     
     
         2 . The element according to  claim 1 , characterised in that the second body ( 9 ) comprises an upper surface ( 12 ) and the lower annular liner ( 11 ) is divided into a plurality of sectors ( 13 ) extending vertically, separate from one another, and each having a cam ( 10 ).  
     
     
         3 . The element according to claims  1  and  2 , characterised in that the number of vertical sectors ( 13 ) is equal to the number of pins ( 8 ) on the annular surface ( 7 ) of the first body ( 5 ).  
     
     
         4 . The element according to  claim 1 , characterised in that the cams ( 10 ) comprise at least one annular surface ( 14 ) on the outer part of the annular liner ( 11 ) designed to form a sliding zone for the pins ( 8 ) of the first body ( 5 ) and, at the lower end, an undercut ( 15 ) which engages the pins ( 8 ), allowing the minimum radial dimension configuration of the second body ( 9 ) to be achieved.  
     
     
         5 . The element according to  claim 1 , characterised in that the cams ( 10 ) comprise an annular surface ( 14 ) on the outer part of the annular liner ( 11 ) designed to form a sliding zone for the pins ( 8 ) of the first body ( 5 ) and, at the lower end, an undercut ( 15 ) which engages the pins ( 8 ), allowing the minimum radial dimension configuration of the second body ( 9 ) to be achieved; at the zone which forms the undercut ( 15 ), the annular liner ( 11 ) having a plurality of protrusions ( 16 ) for guiding the pins ( 8 ), during the unique rotation, with each protrusion ( 16 ) forming a sliding groove for the pins ( 8 ) terminating with a seat ( 17 ) for holding and locking the pins ( 8 ), to achieve the stable maximum radial dimension configuration of the second body ( 9 ).  
     
     
         6 . The element according to claims  1  and  2 , characterised in that the second body ( 9 ) has a seal ( 18 ) at the upper surface ( 12 ) in the zone opposite that facing the first body ( 5 ).  
     
     
         7 . The element according to  claim 1 , characterised in that, the first body ( 5 ) has a central protrusion ( 19 ) in stable contact with the outer surface of the upper surface ( 12 ) of the second body ( 9 ).  
     
     
         8 . The element according to  claim 1 , characterised in that the first body ( 5 ) has a first, central protrusion ( 19 ) and a second, peripheral annular protrusion ( 20 ) which are in stable contact with the outer surface of the upper surface ( 12 ) of the second body ( 9 ).  
     
     
         9 . The element according to claims  1  and  2 , characterised in that the second body ( 9 ) has an inner annular tooth ( 21 ) which engages the annular bead ( 4 ) on the mouth ( 2 ) of the container ( 1 ).  
     
     
         10 . The element according to  claim 5 , characterised in that the pins ( 8 ) have a pentagonal cross-section and the holding and locking seat ( 17 ) has a matching profile, for at least three sides of the pentagon, allowing the pin ( 8 ) to engage following rotation of the first body ( 5 ), holding the pin ( 8 ) in a plane offset from the annular liner ( 11 ), locking the first body ( 5 ) relative to the second body ( 9 ).  
     
     
         11 . The element according to  claim 1 , characterised in that the first body ( 5 ) has a plurality of beads ( 5   a ) evenly arranged on the outer part of the upper surface ( 6 ), allowing the consumer to grip the first body ( 5 ).  
     
     
         12 . A container ( 1 ) for liquids, comprising a mouth ( 2 ) for dispensing the liquid and defined by the neck ( 3 ) of the container ( 1 ), the neck ( 3 ) having an annular bead ( 4 ) and a closing element ( 100 ) made of a plastic material, the container being characterised in that the closing element ( 100 ) comprises: 
 a first, outer body ( 5 ) with a circular-cylindrical shape and defined by an upper surface ( 6 ) and a lower annular liner ( 7 ), made in a single piece, the first body ( 5 ) also having a plurality of projecting pins ( 8 ) arranged evenly on the inner part of the annular liner ( 7 );    a second, inner body ( 9 ) with a circular-cylindrical shape, inserted between the first body ( 5 ) and the mouth ( 2 ) and having cams ( 10 ) on its outer annular surface ( 11 ), being designed, in conjunction with the pins ( 8 ) of the body ( 5 ), to allow a stable minimum radial dimension configuration, or closing of the mouth ( 2 ) by engagement of the annular bead ( 4 ) and an annular tooth ( 21 ) on the second body ( 9 ), by the radial thrust of the pins ( 8 ), and a maximum radial dimension configuration, or opening, of the mouth ( 2 ), by unique rotation of the first body ( 5 ) about the second body ( 9 ), distancing the second body ( 9 ) from the mouth ( 2 ).