Heat insulating container

Abstract

Provided is a heat insulation container which can be easily produced and assembled at a reduced cost, in which a heat insulation grip portion can be formed by a simple operation, in which a strip-shaped projection is maintained and a heat insulation effect can be reliably maintained even when the container is externally gripped, and which can be reliably gripped without being deformed. The heat insulation container ( 100 ) can be formed with the heat insulation grip portion by sliding a sleeve ( 120 ) on which a plurality of strips ( 121, 122 ) are formed by a plurality of slits ( 130 ), wherein at least one of the slits ( 130 ) comprises a bent portion ( 131 ) which defines a protrusion ( 127 ) and a depression ( 128 ) in each of the adjacent strips ( 121, 122 ).

1 . A heat insulating container that has a container main body having a body wall and a bottom wall, and also has a sleeve fitted on an outer circumferential surface of the body wall of the container main body,
 the sleeve being provided with a plurality of slits defining a plurality of strips in a vertical direction within a predetermined range in a height direction, and   the plurality of strips bending or curving to project at an outer circumferential portion thereby forming a heat insulating grip portion, as a result of sliding a portion of the sleeve that is above or below the strips, wherein   the plurality of strips includes first strips each having an upper valley broken line at an upper end and an upper peak broken line close to an upper portion, and second strips each having a lower valley broken line at a lower end and a lower peak broken line close to a lower portion, the first strips and the second strips being arranged alternately and adjacently to each other, and   at least one of the plurality of slits has a bent portion forming a protrusion and a depression in a portion between the upper peak broken line and the lower peak broken line of strips at both sides, and also has linear portions extending upward and downward from the bent portion.   
     
     
         2 . The heat insulating container according to  claim 1 , wherein the upper valley broken line and the lower valley broken line form an angle with respect to a horizontal line. 
     
     
         3 . The heat insulating container according to  claim 1 , wherein the linear portions of the plurality of slits have an angle with respect to a vertical line. 
     
     
         4 . The heat insulating container according to  claim 3 , wherein the linear portions of the plurality of slits are bent at positions of the upper peak broken lines and the lower peak broken lines. 
     
     
         5 . The heat insulating container according to  claim 1 , wherein two or more of the protrusions of the strip are formed in succession in the vertical direction, and two or more of the depressions of the strip are formed in succession in the vertical direction. 
     
     
         6 . The heat insulating container according to  claim 1 , wherein the strip on at least one side of the slit having the bent portion has a notch extending in a horizontal direction from the depression. 
     
     
         7 . The heat insulating container according to  claim 1 , wherein the depression and the protrusion of the strip are formed in a sawtooth shape.