US Patent 8092184 Locking plate fast fastening ceiling fan blades

A locking plate fast fastening ceiling fan blades includes a clamp plate. A first chute is on the clamp plate, where a pushing board is contained. A thru hole and a position limiting unit are provided in the first chute of clamp plate. A wedge unit is provided on the pushing board. When a set of blades is installed on a blade rack of a ceiling fan, only the blade is set around several pillars on the blade rack, the clamp plate of locking plate is set to locate on the pillar, and a pillar passes through the thru hole. The pushing board of locking plate is shifted toward the pillar to make the front end of pushing board stay close to the side of pillar and make the wedge unit wedge to the position limiting of clap plate for fast and exactly fixing the blade onto the blade rack.