Frame assembly device

Abstract

A frame assembly device includes a plurality of supporting tubes, a plurality of annular grooves, a plurality of inner liners, at least one the frame assembly, and at least one board. The external circle ring of the inner liner is formed as a tapered shape. A cambered convex portion is installed in a specific position of the internal circle ring of the inner liner. Besides, the inner liner is sheathed on the external circle ring of the supporting tube so that the cambered convex portion is positioned in the annular groove. The frame assembly has a plurality of connecting units and hollow connecting tubes. The relative sides of the external circle ring of the board have respectively a cambered concave portion. Besides, the boards are installed in the frame assemblies so that each cambered concave portion is capable of covering on the external circle ring of each hollow connecting tube.

1 . A frame assembly device comprising:
 a plurality of supporting tubes; an external circle ring of each supporting tube having a plurality of interval parallel annular grooves;   a plurality of inner liners; the external circle ring of each inner liner being formed as a tapered shape; and the inner liner being sheathed on the external circle ring of the supporting tube so that the cambered convex portion is positioned in the annular groove;   at least one the frame assembly; each frame assembly having a plurality of connecting units and a plurality of hollow connecting tubes; each connecting unit having a penetrating hole; the external circle ring of the connecting unit being connected to each hollow connecting tube so that the frame assemblies being formed as a square frame; wherein the penetrating hole of the connecting unit of the frame assembly serves to sheathe on the inner liner on the external circle ring of the supporting tube;   at least one board; each of an opposite lateral sides of the external circle rings of the board having respectively a cambered concave portion; and the board being installed in the frame assembly so that each cambered concave portion of the board being capable of being covered on the external circle ring of each conductive terminal.   
   
   
       2 . The frame assembly device as claimed in  claim 1 , wherein the inner liner has a cambered first sheet and a second sheet relative to the cambered first sheet so that the external circle ring of the inner liner is formed as a tapered shape with a larger bottom; a cambered convex portion is installed in a specific position of the cambered first sheet; one side edge of the cambered first sheet is raised with two ribs relative to each other; the second sheet has a cambered convex portion relative to the cambered convex portion of the cambered first sheet; the second sheet relative to the rib of the cambered first sheet has a notch; the cambered first sheet and the second sheet serves to cover the external circle ring of the supporting tube so that the cambered convex portions of the cambered first sheet and the second sheet are buckled to the annular groove of the supporting tube; and the ribs of the cambered first sheet is buckled to the notch of the second sheet. 
   
   
       3 . The frame assembly device as claimed in  claim 1 , wherein the penetrating hole of the connecting unit is formed as a tapered shape with a larger bottom. 
   
   
       4 . The frame assembly device as claimed in  claim 1 , wherein each cambered concave portion of each board is formed as an inwards concave shape. 
   
   
       5 . The frame assembly device as claimed in  claim 1 , wherein the board is made of metal, wood or plastic.