Supporting plate connecting piece

The utility model relates to the technical field of hardware, and discloses a supporting plate connecting piece which comprises a main body shell, an eccentric wheel and a screw. The main body shell is provided with an accommodating groove; the eccentric wheel is placed in the accommodating groove; the screw is divided into a screw head part, a pressing part and a thread part from top to bottom; the pressing part is in a cylindrical shape; the main body shell is provided with a first through hole; the screw penetrates through the first through hole to fix the main body shell with an external plate; the diameter of the pressing part is equal to that of the first through hole; the length of the pressing part is smaller than or equal to the length of the first through hole. The clamping part in the screw is cylindrical, and when the clamping part is matched with the first through hole of the main body shell to enable the main body shell to be fixed on an external plate, due to the existence of the clamping part,