Shelf to twin-post support assembling structure for sectional rack

Abstract

In a shelf to twin-post support assembling structure for sectional rack, the sectional rack includes at least two side support frames and at least two shelves, the shelves are provided at four corners with fastening connectors for engaging with front and rear twin-post supports of the side support frames, and the shelf to twin-post support assembling structure includes transverse metal bars connected to lower front and lower rear end of every shelf as well as a movable bracket rotatably connected to each of two lateral ends of the transverse metal bars. The movable brackets have upper ends connected to the transverse metal bars of the shelves and lower ends to the twin-post supports of the side support frames to provide a sideward support effect between the shelves and the side support frames, so that the sectional rack has increased structural strength without wobbling under a sideward external force applied thereto.

1 . A shelf to twin-post support assembling structure for sectional rack; the sectional rack including at least two side support frames and at least two shelves; each of the side support frames including a front twin-post support having two juxtaposed front posts, a rear twin-post support having two juxtaposed rear posts, and at least two vertically spaced horizontal braces, the horizontal braces each having a front and a rear end welded to the front posts and the rear posts, respectively, to form an integral side support frame; each of the shelves being fixedly provided at four corners with a fastening connector each, the fastening connectors respectively defining a receiving space therein, the receiving spaces of the fastening connectors at four corners of the shelves being adapted to engage with front posts and rear posts corresponding thereto to thereby produce an effect of pushing the front and rear posts of the same side support frame forward and rearward, respectively; the shelf to twin-post support assembling structure comprising:
 a front and a rear transverse metal bar connected to a lower front and a lower rear end of every shelf, respectively; and   a movable bracket rotatably connected to each of two lateral ends of the front and rear transverse metal bars; each of the movable brackets having an upper end rotatably fitted around one corresponding front or rear transverse metal bar to allow the movable bracket to pivotally turn about the front or rear transverse metal bar, and a lower end formed into a U-shaped section to define a U-shaped engaging space therein; the U-shaped engaging spaces of the movable brackets connected to the front transverse metal bars of the shelves being forward opened, while the U-shaped engaging spaces of the movable brackets connected to the rear transverse metal bars of the shelves being rearward opened; the movable brackets connected to two lateral ends of the front transverse metal bars of the shelves being forwardly turnable about the front transverse metal bars for the U-shaped engaging spaces at the lower ends of the movable brackets to correspondingly engage with the front posts of the side support frames by force fitting; and the movable brackets connected to two lateral ends of the rear transverse metal bars of the shelves being rearwardly turnable about the rear transverse metal bars for the U-shaped engaging spaces at the lower ends of the movable brackets to correspondingly engage with the rear posts of the side support frames by force fitting; whereby, with the upper and lower ends of the movable brackets being securely connected to the shelves and the twin-post supports of the side support frames, respectively, an additional sideward supporting strength is provided to the sectional rack.   
     
     
         2 . The shelf to twin-post support assembling structure for sectional rack as claimed in  claim 1 , wherein when the U-shaped engaging spaces of the movable brackets are engaged with corresponding front and rear posts, the movable brackets located closer to a left side of the shelves are pressed at their respective upper left end against a stopper, and the movable brackets located closer to a right side of the shelves are pressed at their respective upper right end against another stopper. 
     
     
         3 . The shelf to twin-post support assembling structure for sectional rack as claimed in  claim 2 , wherein the stoppers are respectively fixedly coupled with one of the fastening connectors to form an integral unit, and the stoppers are respectively welded to the shelves to form an integral part of the shelves. 
     
     
         4 . The shelf to twin-post support assembling structure for sectional rack as claimed in  claim 1 , wherein, when measuring at the same lateral side of the shelf, a distance between an inner end of the forward opened receiving space of the front fastening connector and an inner end of the rearward opened receiving space of the rear fastening connector is slightly smaller than a distance between the front posts of the front twin-post support and the rear posts of the rear twin-post support of the side support frame. 
     
     
         5 . The shelf to twin-post support assembling structure for sectional rack as claimed in  claim 1 , wherein the shelves are metal shelves made of a plurality of metal bars.