Portable tumbler

Abstract

A portable tumbler comprises: a lower cup portion having an open top surface and an accommodation space formed therein; a lower connection portion coupled to the outer circumferential surface of the lower cup portion; an upper cup portion having open top and bottom surfaces and a prescribed height; an upper connection portion coupled to the outer circumferential surface of the upper cup portion and detachably coupled to the lower connection portion; and a cap coupled to the upper cup portion so as to cover the open top surface of the upper cup portion, wherein the lower connection portion and the upper connection portion may be coupled to each other so that the upper end of the lower cup portion and the lower end of the upper cup portion are in contact with each other. The portability of the portable tumbler when a user is carrying the portable tumbler can be improved by reducing the volume of the portable tumbler by pushing the stretchable lower and upper cup portions into the lower and upper connection portions, respectively.

What is claimed is: 
     
         1 . A portable tumbler, comprising:
 a lower cup portion having an opened upper side and a containing space therein;   a lower connection portion coupled to an outer circumferential surface of the lower cup portion;   an upper cup portion with a certain height, the upper cup portion having an opened upper side and an opened lower side;   an upper connection portion coupled to an outer circumferential surface of the upper cup portion, the upper connection portion separably coupled to the lower connection portion; and   a lid coupled to the upper cup portion to cover the opened upper side of the upper cup portion,   wherein the lower connection portion and the upper connection portion are coupled so that the opened upper side of the lower cup portion and the opened lower side of the upper cup portion contact each other.   
     
     
         2 . The portable tumbler of  claim 1 , wherein:
 a drink hole penetrating upper and lower portions of the lid is formed at the lid,   the portable tumbler further comprises a closure coupled to the lid and configured to cover the drink hole, and   an upper surface of the closure is positioned at a same plane as an upper surface of the lid.   
     
     
         3 . The portable tumbler of  claim 1 , wherein:
 the lower cup portion is made of flexible material, and   the lower cup portion is configured to be foldably insertable toward an inside of the lower connection portion.   
     
     
         4 . The portable tumbler of  claim 1 , wherein:
 the upper cup portion is made of flexible material, and   the upper cup portion is configured to be foldably insertable toward an inside of the upper connection portion.   
     
     
         5 . The portable tumbler of  claim 1 , further comprising a ring portion coupled to the outer circumferential surface of the upper cup portion,
 wherein the lid is coupled to the ring portion.   
     
     
         6 . The portable tumbler of  claim 5 , wherein:
 one or more fixing parts are formed on the outer circumferential surface of the upper cup portion, and   one or more fixing grooves corresponding to the one or more fixing parts are formed on an inner circumferential surface of the ring portion.   
     
     
         7 . The portable tumbler of  claim 1 , wherein:
 a lower coupling groove is formed on the outer circumferential surface of the lower cup portion, and   the lower connection portion is inserted in the lower coupling groove and coupled to the lower cup portion.   
     
     
         8 . The portable tumbler of  claim 1 , wherein:
 an upper coupling groove is formed on the outer circumferential surface of the upper cup portion, and   the upper connection portion is inserted in the upper coupling groove and coupled to the upper cup portion.   
     
     
         9 . The portable tumbler of  claim 1 , wherein the lower cup portion comprises a lower handle formed on a lower surface of the lower cup portion, and handle grooves are formed at both sides of the lower handle. 
     
     
         10 . The portable tumbler of  claim 1 , wherein a flection is formed on an inner side surface of one of the upper cup portion and the lower cup portion.