Abstract: A connector for connecting a vertical rod and a horizontal rod crossing with the vertical rod at right angles, which connector is entirely made of a spring quality wire material and comprises: laterally directed U-shaped upper and lower portions; and a middle portion for connecting the upper and lower portions, which upper portion is bent downward in front ends of both feet thereof, which middle portion extends from a front end of a foot of the feet of the upper portion downward and obliquely, a lower end of which middle portion is connected to one of a pair of feet of the lower portion, which one is disposed in a position corresponding to that opposite to a position in which the above-mentioned foot of the pair of feet of the upper portion is disposed.