Foldable table structure

Abstract

The present invention is a foldable table structure, which is comprised of a fore-board, a backboard and two connection rods. Wherein, two symmetrical concave troughs are arranged at the connection side of the fore-board and the interior of the concave troughs each has a folding plane and an unfolding plane. Corresponding to two concave troughs of the fore-board, two concave troughs are arranged at the connection side of the backboard and each interior of the concave troughs also has a folding plane and an unfolding plane. The connection rod has a fore-end and a back-end. The fore-end is pivotally connected inside the interior of the concave trough of the fore-board and the back-end is pivotally connected inside the interior of the concave trough of the backboard. When the table is unfolded, the connection side of the fore-board is connected against to the connection side of the backboard, and the connection rods contact flatly with the unfolding planes of the fore-board and keep an appropriate angle with the unfolding planes of the backboard. When the table is folded, the backboard is rotated unto the fore-board to make the connection rods contact flatly with the folding planes of the fore-board and the backboard.

What is claimed is:  
     
         1 . A foldable table structure includes: 
 a fore-board, which has a connection side and at least one concave trough capable of receiving a connection rod, said concave trough being arranged at said connection side, said concave trough further having an interior which includes a folding plane and an unfolding plane;    a backboard, which has a connection side corresponding to said fore-board and at least one concave trough capable of receiving a connection rod, the concave trough of the backboard being arranged at said connection side of said backboard, interior of said concave trough of said backboard also has a folding plane and an unfolding plane; and    a connection rod, which includes a fore-end and a back-end, wherein said fore-end is pivotally connected to the interior of said concave trough of said fore-board and said back-end is also pivotally connected to the interior of said concave trough of said backboard;    wherein, when said table is unfolded, said connection side of said fore-board is contacted with said connection side of said backboard, and said connection rod contacts flatly with said unfolding plane of said fore-board and contacts flatly with said unfolding plane of said backboard; when said table is folded, said backboard is rotated up onto said fore-board and makes said connection rod contact flatly with said folding planes of said fore-board and said backboard.    
     
     
         2 . The foldable table structure according to  claim 1 , wherein said folding plane of said fore-board is vertical to the board surface of said fore-board, and the angle between said unfolding plane and said folding plane of said fore-board is an obtuse angle, and said folding plane of said backboard is vertical to the board surface of said backboard, and the angle between said unfolding plane and said folding plane of said backboard is an acute angle.  
     
     
         3 . The foldable table structure according to  claim 1 , wherein the connection place of said folding plane and said unfolding plane in said fore-board is designed as an arc angle, and the connection place of said folding plane and said unfolding plane in said backboard is also designed as an arc angle.  
     
     
         4 . The foldable table structure according to  claim 3 , wherein said fore-end and back-end of said connection rod each is arranged with an arc end which matches with said arc angles of said fore-board and said backboard.  
     
     
         5 . The foldable table structure according to  claim 1 , wherein the depth of said folding plane of said concave trough of said fore-board is shallower than that of said folding plane of said concave trough of said backboard.  
     
     
         6 . The foldable table structure according to  claim 1 , wherein said connection rod is made of metal materials.  
     
     
         7 . The foldable table structure according to  claim 1 , wherein said concave trough of said fore-board and said concave trough of said backboard are made of metal materials.  
     
     
         8 . The foldable table structure according to  claim 1 , wherein said connection side of said fore-board is vertical to said board surface.  
     
     
         9 . The foldable table structure according to  claim 1 , wherein said connection side of said backboard is vertical to said board surface.  
     
     
         10 . The foldable table structure according to  claim 1 , wherein two symmetrical concave troughs are arranged at said connection side of said fore-board, and two concave troughs symmetrically corresponding to two concave troughs of said fore-board are arranged at said connection side of said backboard.