Container lid for preventing overbrimming

Abstract

Disclosed herein is a container lid for preventing overbrimming, which can prevent accidents by heating means and uncleanness or damage of the heating means by preventing overbrimming of the contents. The container lid for preventing overbrimming includes a steam outlet formed on a grip fixed on the lid and a cover plate formed on the inner surface of the lid and elevated by elevation means for opening and closing the steam outlet so as to smoothly discharge steam, thereby preventing uncleanness or damage of heating means and preventing accidents by preventing overbrimming of contents contained in a container.

1 . A container lid for preventing overbrimming, comprising: 
 a lid body ( 2 ) of a heating container, the lid body having through-holes ( 2   a ) formed therein;    a grip ( 3 ) disposed on the lid body ( 2 ) and having an elevation hole ( 7 ) formed centrally therein and steam outlets ( 6 ) formed at opposite sides thereof;    a fixing plate ( 4 ) disposed beneath the lid body ( 2 ) and having through-holes drilled therein to communicate with the through-holes ( 2   a );    fixing means ( 5 ) for fixing the grip ( 3 ) and the fixing plate ( 4 ) to the lid body ( 2 );    an automatically opening and closing member ( 9 ) disposed between the grip and the lid body and formed integrally with a cover plate ( 11 ) having an annular packing ( 11   a ) formed at the outer rim of the cover plate, for sealing the through holes ( 2   a ) of the lid body ( 2 );    the automatically opening closing member ( 9 ) being elevated in the elevation hole ( 7 ) of the grip ( 3 ), and    elevation means ( 12 ) mounted beneath the fixing plate ( 4 ) in such a manner as to be connected to the lid body ( 2 ) or the fixing plate ( 4 ) and the automatically opening and closing member ( 9 ), for opening the through-holes ( 2   a ) of the lid body ( 2 ) by elevating the automatically opening and closing member ( 9 ) according to a temperature change.    
   
   
       2 . The container lid according to  claim 1 , wherein the automatically opening and closing member ( 9 ) has a slide groove ( 9   b ), and a slide protrusion ( 7   a ) is formed on the inner wall of the elevation hole ( 7 ) of the grip ( 3 ) to correspond to the slide groove ( 9   b ).  
   
   
       3 . The container lid according to  claim 1 , wherein the automatically opening and closing member ( 9 ) has an insertion portion ( 9   a ), the fixing plate ( 4 ) has a hollow bar ( 8 ) formed integrally with the center thereof, to fit into the insertion portion ( 9   a ) while passing through the center of the lid body ( 2 ).  
   
   
       4 . The container lid according to  claim 3 , further comprising an auxiliary spring ( 10 ) disposed on the upper portion of the hollow bar ( 8 ) for elastically supporting the automatically opening and closing member ( 9 ).  
   
   
       5 . The container lid according to  claim 1 , wherein the grip ( 3 ) has a slide stopper ( 17 ) mounted in a slide groove ( 18 ) formed on the upper portion thereof, and the automatically opening and closing member ( 9 ) has a slot groove ( 19 ) formed on the upper portion thereof to fit the stopper ( 17 ) therein.  
   
   
       6 . The container lid according to  claim 1 , further comprising: 
 a supporting portion ( 23 ) formed on the lower end of the elevation hole ( 7 ) of the grip ( 3 );    an auxiliary spring ( 10 ) seated on the supporting portion ( 23 ); and    a spring adjustor ( 25 ) mounted on the automatically opening and closing member ( 9 ) to which an adjustment screw ( 24 ) is fastened for compressing the auxiliary spring ( 10 ).    
   
   
       7 . The container lid according to  claim 1 , further comprising: 
 a supporting portion ( 23 ) formed on the lower end of the elevation hole ( 7 ) of the grip ( 3 );    an auxiliary spring ( 10 ) seated on the supporting portion ( 23 );    a spring adjustor ( 25 ) screwed to a threaded portion ( 29 ) formed on the outer circumference of the upper end of the automatically opening and closing member ( 9 ) in an elevated manner;    a fixing cover ( 31 ) disposed on the upper portion of the grip ( 3 ) and having an indicating portion  32  formed on the upper circumference thereof for allowing the user to check a spring-compressed level with naked eyes;    a holding protrusion ( 33 ) formed on the lower end of the spring adjustor ( 25 ); and    a fixing protrusion ( 30 ) formed on the fixing cover ( 31 ) in such a way as to correspond to the holding protrusion ( 33 ) of the spring adjustor ( 25 ).    
   
   
       8 . The container lid according to  claim 1 , wherein the elevation means ( 12 ) has a sensing piece ( 14 ) made with plate spring bimetal which is bended upwardly according to temperature change, the sensing piece ( 14 ) having an end rotatably fixed to the lower portion of the cover plate ( 11 ) by a pin ( 16 ) and the other end fixed to the lid body ( 2 ) by the fixing plate ( 4 ).  
   
   
       9 . The container lid according to  claim 1 , wherein the elevation means ( 12 ) for elevating the automatically opening and closing member ( 9 ) includes: 
 an actuating shaft ( 15 ) having the upper end fixed to the automatically opening and closing member ( 9 ) by a connection pin ( 13 ) in a state where it is inserted into the automatically opening and closing member ( 9 );    a sensing piece ( 14 ) fixed to the lower portion of the lid body ( 2 ) by the fixing plate ( 4 ); and    a pin ( 16 ) rotatably connecting the lower end of the actuating shaft ( 15 ) and the sensing piece ( 14 ).    
   
   
       10 . The container lid according to  claim 8 , wherein the sensing piece ( 14 ) is made with bimetal in which upper and lower thin sheets ( 14   a )( 14   b ) of different thermal expansive coefficients are bonded to each other, and 
 wherein the upper thin sheet ( 14   a ) is low in thermal expansive coefficient and the lower thin sheet ( 14   b ) is high in thermal expansive coefficient, so that the sensing piece  914 ) is bended upwardly when temperature rises.    
   
   
       11 . The container lid according to  claim 1 , wherein the elevation means ( 12 ) for elevating the automatically opening and closing member ( 9 ) includes: 
 a sensing piece ( 14 ) fixed to the fixing plate ( 4 ) disposed on the lower portion of the lid body ( 2 ), the sensing piece ( 14 ) being bended downwardly when temperature rises;    a lever ( 20 ) rotatably mounted at a side of the lower portion of the fixing plate ( 4 ) and compressed by the sensing piece ( 14 );    a pressure lever ( 21 ) downwardly protruding from the lower portion of the lever ( 20 );    a stopper ( 22 ) axially mounted on the lower portion of the fixing plate ( 4 ), operated by the pressure lever ( 21 ) and angularly moved; and    an actuating shaft ( 15 ) having a holding jaw ( 15   a ) formed on the lower end portion thereof for holding the stopper ( 22 ).    
   
   
       12 . The container lid according to  claim 11 , wherein the sensing piece ( 14 ) is made with bimetal in which upper and lower thin sheets ( 14   a )( 14   b ) of different thermal expansive coefficients are bonded to each other, and 
 wherein the upper thin sheet ( 14   a ) is high in thermal expansive coefficient and the lower thin sheet ( 14   b ) is low in thermal expansive coefficient, so that the sensing piece  914 ) is bended downwardly when temperature rises.    
   
   
       13 . The container lid according to  claim 1 , further comprising: 
 a supporting portion ( 23 ) formed on the lower end of the elevation hole ( 7 ) of the grip ( 3 );    an auxiliary spring ( 10 ) seated on the supporting portion ( 23 ); and    a spring adjustor ( 25 ) mounted on the upper end of the automatically opening and closing member ( 9 ) by an adjustment screw ( 24 ) for compressing the auxiliary spring ( 10 ),    wherein the elevation means ( 12 ) for elevating the automatically opening and closing member ( 9 ) includes a permanent magnet ( 26 ) mounted on the lower portion of the cover plate ( 11 ) of the automatically opening and closing member ( 9 ) for sensing temperature, and a magnetic substance ( 27 ) mounted on the fixing plate ( 4 ) and corresponding to the permanent magnet ( 26 ).    
   
   
       14 . The container lid according to  claim 13 , further comprising: 
 a fixing cover ( 31 ) disposed on the upper portion of the grip ( 3 ) and having an indicating portion  32  formed on the upper circumference thereof for allowing the user to check a spring-compressed level with naked eyes;    a holding protrusion ( 33 ) formed on the lower end of the spring adjustor ( 25 ); and    a fixing protrusion ( 30 ) formed on the fixing cover ( 31 ) in such a way as to correspond to the holding protrusion ( 33 ) of the spring adjustor ( 25 ),    wherein the spring adjustor ( 25 ) is screwed to a threaded portion ( 29 ) formed on the outer circumference of the upper end of the automatically opening and closing member ( 9 ) in an elevated manner.    
   
   
       15 . The container lid according to  claim 13 , wherein a number of the permanent magnets ( 26 ) and the magnetic substances ( 27 ) are provided.  
   
   
       16 . The container lid according to  claim 13 , wherein the magnetic substance ( 27 ) is mounted on the lid body ( 2 ).