Fast-positioning device for assembling blade brackets to a motor housing of a ceiling fan

Abstract

The invention relates to a fast-positioning device for assembling b lad e brackets to a motor housing of a ceiling fan. The motor housing has its bottom provided with at least a positioning plate respectively projected downward at plural locations equidistantly spaced apart around its circumference. Each of the positioning plates has a long side arranged around the circumference of the motor housing. Each blade bracket has a connecting portion for connecting with the motor housing. The connecting portion has at least a plugging groove bored vertically to correspond to and be inserted by the positioning plate, so as to keep the blade bracket quickly positioned under the motor housing and engaging positioning locations of the blade brackets and the motor housing exactly facing to each other.

1 . A fast-positioning device for assembling blade brackets to a motor housing of a ceiling fan, said motor housing having its bottom assembled with plural said blade brackets spaced apart equidistantly around its circumference, said blade brackets fixed with said motor housing by screws passing through corresponding through holes, said fast-positioning device characterized by:
 said motor housing provided with a positioning plate respectively located at plural locations around its circumference, that are closer to its center and equidistantly spaced apart, each of said positioning plates extended downward from the bottom of said motor housing and arranged around the circumference of said motor housing; and   said blade bracket provided with a connecting portion for connecting with said motor housing, said connecting portion at least provided with a plugging groove bored vertically for corresponding to said positioning plate of said motor housing, said plugging groove to be vertically inserted by said positioning plate to keep said blade bracket quickly positioned on said motor housing and engaging positioning locations of said blade brackets and said motor housing exactly facing to each other.   
   
   
       2  The fast-positioning device for assembling blade brackets to a motor housing of a ceiling fan as claimed in  claim 1 , wherein said motor housing has a round bottom, made of metal and provided with a positioning plate located at five certain locations around its circumference respectively and equidistantly spaced apart, each said positioning plate integrally formed by pressing down from the bottom of said motor housing to have a rectangular shape, each said positioning plate provided with a long side and a short side, said long side of said positioning plates arranged regularly around the circumference of said motor housing, said connecting portion of said blade bracket provided with a plugging groove bored at its center for being inserted by said positioning plate. 
   
   
       3  The fast-positioning device for assembling blade brackets to a motor housing of a ceiling fan as claimed in  claim 1 , wherein said motor housing is provided with a threaded hole bored at two sides of each said positioning plate respectively and said connecting portion of each said blade bracket is provided with a through hole bored at its two sides respectively for corresponding to said threaded hole, so that screws are inserted through said through holes to be fixed in said threaded holes to keep said blade brackets combined stably with and under said motor housing.