Twist collapsible bag

Abstract

A twist collapsible bag includes a collapsible bag body and a collapsible frame structure, which supports the collapsible bag body in shape, having a plurality of annular frame members horizontally arranged at different elevations and a plurality of vertical support rods vertically and equiangularly arranged between each two adjacent annular frame members and kept apart from the respective annular frame members at a predetermined gap such that when twisting the annular frame members relative to one another, the vertical support rods are biased from vertical to horizontal, thereby collapsing the twist collapsible bag into a flat condition.

1 . A twist collapsible bag, comprising a collapsible bag body and a collapsible frame structure supporting said collapsible bag body in shape, said collapsible bag body comprising a plurality of annular frame members horizontally arranged at different elevations and a plurality of vertical support rods vertically and equiangularly arranged between each two adjacent annular frame members and kept apart from the respective annular frame members at a predetermined gap, wherein twisting one said annular frame member relative to another said annular frame member causes the vertical support rods therebetween to be biased from vertical to horizontal. 
     
     
         2 . The twist collapsible bag as claimed in  claim 1 , wherein each said annular frame member is made by bending a metal wire rod into a circular shape and then welding the two ends of the metal wire rod together. 
     
     
         3 . The twist collapsible bag as claimed in  claim 1 , wherein each said annular frame member is made by bending a metal wire rod into a circular shape and then fixedly fastening the two ends of the metal wire rod together with an adhesive. 
     
     
         4 . The twist collapsible bag as claimed in  claim 1 , wherein each said annular frame member is injection-molded from plastics.