Patent ID: 7992730

Claim:
A pillar insertion combination rack made in a polygonal shape and a single layer or multiple layers includes: an upper frame, a lower frame, a top, multiple pillars, multiple clamping members, and multiple connection rods; wherein the upper frame is made of a first metal wire material in continuous form coiled at each corner of the upper frame to define an upper ring at each corner and running straight between any two adjacent corners, both ends of the first wire being spot welded where both ends of the first metal wire material meet; the lower frame being made of a second metal wire material in continuous form coiled at each corner of the lower frame to define a lower ring at each corner and running straight between any two adjacent corners, both ends of the second wire being spot welded where both ends of the second metal wire material meet; the diameter of each upper ring being smaller than that of the respective lower ring; each pillar containing multiple sections with a circumferential slot defined between any two abutted sections; each clamping member comprised of two identical halves facing each other so as to secure to the respective pillar at where the respective pillar is configured to be inserted into both the respective upper ring and the respective lower ring by biting two circumferential slots of the respective pillar; the connection rods made of third metal wire material shaped in a waveform and disposed between and soldered to both of the upper frame and the lower frame between each two adjacent corners with both of the upper ring and the lower ring at each corner being concentrically arranged; each pillar with its clamped portion being inserted into and through both the respective lower ring and the respective upper ring; and the top being placed in the upper frame of the rack.