Foldable rack assembly

Abstract

A foldable rack assembly includes first and second components. The first component includes a back plate and a first shelf plate projecting forwardly from the back plate. The second component includes a second shelf plate connected pivotally to the first component. The second shelf plate is movable relative to the back plate between an unfolded position, where the second shelf plate projects forwardly from the back plate and is coplanar with the first shelf plate, and a folded position, where the second shelf plate is rotated downward and toward the back plate.

1 . A foldable rack assembly comprising: 
 a first component including a back plate and a first shelf plate projecting forwardly from said back plate; and    a second component including a second shelf plate connected pivotally to said first component, said second shelf plate being movable relative to said back plate between an unfolded position, where said second shelf plate projects forwardly from said back plate and is coplanar with said first shelf plate, and a folded position, where said second shelf plate is rotated downward and toward said back plate.    
   
   
       2 . The foldable rack assembly of  claim 1 , wherein said back plate is formed with a plurality of fastening holes.  
   
   
       3 . The foldable rack assembly of  claim 1 , wherein said second shelf plate includes a top wall, a rear wall extending downwardly from said top wall and confronting said back plate, and a corner formed by said top and rear walls.  
   
   
       4 . The foldable rack assembly of  claim 3 , wherein said first component further includes a mating part projecting forwardly from said back plate and downwardly from said first shelf plate.  
   
   
       5 . The foldable rack assembly of  claim 4 , wherein said second component further includes a mating groove extending downwardly from said corner to said rear wall and forwardly from said corner to said top wall, said mating part extending into said mating groove, said second shelf plate being connected pivotally to said mating part.  
   
   
       6 . The foldable rack assembly of  claim 5 , wherein said second shelf plate further includes at least two ribs projecting downwardly from said top wall and forwardly from said rear wall and defining said mating groove, each of said ribs being formed with a slot, said mating part having two opposite pivot members projecting laterally from said mating part into said slots of said ribs, respectively.  
   
   
       7 . The foldable rack assembly of  claim 6 , wherein said slot of each of said ribs has a first engaging section proximate to said top wall, and a second engaging section distal from said top wall, each of said pivot members engaging said second engaging section when said second shelf plate is unfolded, and engaging said first engaging section when said second shelf plate is folded.  
   
   
       8 . The foldable rack assembly of  claim 7 , wherein said second engaging section is more distal from said rear wall than said first engaging section.  
   
   
       9 . The foldable rack assembly of  claim 8 , wherein each of said ribs has a bottom edge extending away from said top wall, said slot having an open end opening at said bottom edge.  
   
   
       10 . The foldable rack assembly of  claim 9 , wherein said slot extends downwardly from said first engaging section to form a connection section, extends forwardly to said second engaging section from said connection section, and extends rearwardly and then downwardly from said connection section to said open end.  
   
   
       11 . The foldable rack assembly of  claim 3 , wherein said first component further includes a plurality of spaced-apart hook members projecting forwardly from said back plate below said first shelf plate.  
   
   
       12 . The foldable rack assembly of  claim 11 , wherein said rear wall is formed with a plurality of notches for extension of said hook members therethrough.  
   
   
       13 . The foldable rack assembly of  claim 3 , wherein said first shelf plate is superimposed on said second shelf plate when said second shelf plate is unfolded.  
   
   
       14 . The foldable rack assembly of  claim 13 , wherein said top wall has an indented wall part extending forwardly from said corner, said first shelf plate extending into said indented wall part when said second shelf plate is unfolded so that said first shelf plate has a top surface coplanar with a top surface of said top wall.