Construction assembly having a quick coupler
 A construction device includes a rack secured to one or more rods with one or more couplers. Each coupler includes a bore for receiving the rod, a base portion, a wall extended upward from the base portion and a panel extended downward from the base portion. The bottom portions of the panels are inclined relative to the wall for engaging with the rods and for securing the couplers to the rods. The couplers may further include one or more protrusions for engaging with the grooves formed in the rods and for further securing the coupler to the rod. 
A
A47B
inventional
Che Hao
Chang