Threaded packaging with a click function

Abstract

A packing ( 2 ) of plastic material, including a container body ( 4 ) with associated lid ( 6 ), where the screw cap includes closing means preferably in the shape of projecting parts ( 28 ) on a downwards projecting, annular section ( 34 ) on the periphery of the cap, which interact with open, sloping grooves ( 22 ) on the outer side of the mouth ( 8 ) of the container body. The peculiar feature of the packing ( 2 ) is that the screw cap ( 6 ) has a “click” function, as the sloping grooves ( 22 ) and the projecting parts ( 28 ) have interacting locking means that are arrested in each other by screwing on the lid ( 6 ) on the mouth ( 8 ) of the container body, so that relevant parts ( 46 ) on the underside ( 11 ) of the lid in the screwed position of the cap are pressed with a certain fore against the rim area 20 of the mouth of the container ( 8 ).

1 . Packing with screw thread ( 2 ) and including a container body ( 4 ) with associated lid ( 6 ), a mouth ( 8 ) of the container body being constituted by a cylindric extension ( 10 ) with circular cross section, the cylindric extension ( 10 ) having an inner side ( 12 ) facing a cavity ( 14 ) of the container body ( 4 ) and an outer side ( 16 ) including an annular section ( 18 ) projecting therefrom, including a number of open grooves ( 22 ) that are substantially evenly distributed along the outer side circumference, oriented towards a rim ( 20 ) of the mouth and having a bottom ( 23 ), where the lid ( 6 ), which is constituted by a generally flat, largely circular body ( 32 ) with a diameter greater than a diameter of the cylindric extension ( 10 ), with an upper side ( 9 ) and an underside ( 11 ), interacts with the cylindric extension ( 10 ) for closing the mouth ( 8 ) of the packing, as the lid ( 6 ) along the periphery includes an annular section ( 34 ) oriented towards the underside ( 11 ) of the lid, a side ( 36 ) of the lid facing the outer side ( 16 ) of the cylindric extension ( 10 ) having screw threads ( 38 ) for reception in the grooves ( 22 ) by placing the lid ( 6 ) on the mouth ( 8 ) and by making a relative, turning movement between the lid ( 6 ) and the container body ( 4 ), whereby the underside of the lid ( 6 ) is pressed against the rim ( 20 ) of the cylindric extension ( 10 ), and where the grooves ( 22 ) and the screw threads ( 38 ), respectively, each includes one half of mutually interacting arresting means ( 40 ,  42 ) for arresting the lid in the screwed on position, wherein one half of the arresting means ( 40 ) are constituted by a projection ( 40 ) provided in at least one of the grooves ( 22 ) close to its bottom ( 23 ) and oriented transversely of the grooves and standing up from a bottom ( 26 ) of the grooves, and the second half of the arresting means are constituted by the screw threads ( 38 ) in the lid ( 6 ) having a slit ( 42 ) for receiving the projections ( 40 ) for detachable arresting of the lid ( 6 ) on the mouth ( 8 ) in the same moment as the lid ( 6 ) assumes the screwed on position on the mouth ( 8 ) of the container body with the underside ( 11 ) pressed against the rim ( 20 ) of the mouth ( 8 ) of the container body ( 4 ).  
   
   
       2 . Packing with screw thread according to  claim 1 , wherein a side ( 44 ) of the lid ( 6 ) facing the cavity ( 14 ) of the container body ( 4 ) includes a membrane ( 46 ) centred about a middle ( 48 ) of the lid, the membrane ( 46 ) constituted by an annular, projecting section ( 46 ) which at least includes a sloping side edge ( 54 ) oriented towards the mouth ( 8 ) of the container body ( 4 ) and continuing into a side ( 55 ) running in parallel with the internal side ( 12 ) of the mouth ( 8 ), the side ( 55 ) being pressed against the inner side ( 12 ) of the mouth ( 8 ) at its rim ( 20 ) when mounting the lid ( 6 ) in the arrested position, simultaneously with the underside of the lid ( 6 ) being pressed against the rim ( 20 ) of the mouth of the container body ( 4 ).  
   
   
       3 . Packing with screw thread according to  claim 1  wherein the annular projecting section ( 46 ) is conical, as the section ( 46 ) closest to an upper side ( 9 ) of the lid has a diameter at least corresponding to the internal diameter of the cylindric extension ( 10 ) of the mouth ( 8 ) of the container body, and the section ( 46 ) closest to the underside ( 11 ) of the lid has a diameter being less than the internal diameter of the cylindric extension ( 10 ), and the sloping side edge ( 54 ) runs mainly rectilinearly between the part of the section ( 46 ) closest to the underside ( 11 ) of the lid and the side ( 55 ) running in parallel with the internal side ( 12 ) of the mouth ( 8 ) of the container body ( 4 ).  
   
   
       4 . Packing with screw thread according to  claim 3 , wherein the annular section ( 46 ) constituting the membrane with the sloping side edge ( 54 ) is lowered relatively to the underside ( 11 ) of the part of the lid ( 6 ) in contact with the container rim ( 20 ) in the mounted, arrested condition of the lid, whereby the extent of the side ( 55 ) of the annular, projecting section ( 46 ) pressed with the inner side ( 12 ) of the mouth ( 8 ) is increased.  
   
   
       5 . Packing with screw thread according to  claim 1 , wherein the section ( 18 ) under the open grooves ( 22 ) forms one side limitation ( 24 ) of a recess ( 26 ), the other side limitation ( 28 ) of which being constituted by a projection ( 29 ) at the outer side ( 30 ) of the container body ( 4 ), and on the rim ( 60 ) of the annular section ( 34 ) of the lid there is found a spotwisely fastened, annular ring ( 62 ), to the underside ( 64 ) of which with tab hinges ( 66 ) are fastened a plurality of downwards projecting and bendable, interspaced tabs ( 68 ) along the entire circumference of the ring, the tabs ( 68 ) being intended for accommodation in the recess ( 26 ) at the outer side of the container body by placing the lid ( 6 ) in screwed on position on the mouth ( 8 ) of the container body ( 4 ) so that the free sides ( 70 ) of the tabs are in contact with the side limitation ( 24 ) in the recess ( 26 ).  
   
   
       6 . Packing with screw thread according to  claim 5 , wherein the spotwise fastening of the annular ring ( 62 ) to the rim ( 60 ) of the annular section ( 34 ) of the lid is made so that the spotwise fastening is broken by a relative turning displacement between the lid ( 6 ) and the container body ( 4 ) which is oriented opposite to the screwing direction of the lid.