Patent ID: 8047794
Filing Date: 2011-11-01
Classification: F04D

Abstract:
1. A fast-positioning device for assembling blade brackets to a motor housing of a ceiling fan, a bottom of said motor housing assembled with a plurality of said blade brackets that are set around a circumference of said motor housing and equidistantly spaced apart, said blade brackets fixed with said motor housing by screws passing through corresponding through holes, said fast-positioning device characterized by: said motor housing having its bottom provided with plural locations around its circumference and closer to its center, said locations equidistantly spaced apart, each of said locations pressed downward to form at least a pair of restricting plates, a long side of each said restricting plate respectively arranged radially and orderly from a center of said motor housing; said blade bracket provided with a connecting portion for connecting with said motor housing, said connecting portion at least provided with a positioning projection extended from its front end to face to each pair of said restricting plates of said motor housing, said positioning projection horizontally moved toward to engage with said restricting plates without obstructing vision of a worker while installation, thus keeping said blade brackets quickly positioned on said motor housing with engaging locations of said blade bracket and said motor housing exactly facing to each other; and said motor housing is provided with a threaded hole bored at two sides of each said pair of said restricting plates respectively and said blade bracket is provided with a through hole bored at two sides of said positioning projection respectively for corresponding to said threaded hole, so that screws can be inserted through said through holes to engage with said threaded holes to keep said blade brackets installed stably under said motor housing.