Ceiling fan mounting structure

Abstract

A ceiling fan mounting structure is constructed to include a holder base affixed to a fan motor, the holder base having equiangularly spaced retaining blocks and holding an electric plug electrically connected to the fan motor, a barrel coupled to the holder base, the barrel having longitudinal sliding grooves for guiding the retaining blocks into the inside of the barrel and retaining grooves respectively extended sideways from the longitudinal sliding grooves for engaging the retaining blocks upon a rotary motion of the barrel relative to the holder base, an electric socket supported on a spring inside the barrel for receiving the electric plug, a hollow suspension rod connected to the barrel, and a lock member for locking the barrel to the holder base.

1 . A ceiling fan mounting structure comprising a holder base affixed to a fan motor, a barrel coupled to said holder base, a hollow suspension rod connected to said barrel, and a lock member adapted to lock said barrel to said holder base, wherein 
 said holder base comprises a plurality of retaining blocks and an electric plug, said electric plug comprising a plurality of contact pins electrically connected to said fan motor through a power cord and protruding over one side of said holder base opposite to said fan motor;    said barrel holds an electric socket on the inside, comprising a front side connectable to said holder base, a rear side connectable to said hollow suspension rod, a plurality of longitudinal sliding grooves extended to said front side and adapted to guide the retaining blocks of said holder base into the inside of said barrel, and a plurality of retaining grooves respectively extended sideways from said longitudinal sliding grooves and adapted to accommodate the retaining blocks of said holder base upon a rotary motion of said barrel relative to said holder base after insertion of said retaining blocks into said longitudinal sliding grooves, said electric socket being axially movably mounted inside said barrel, said electric socket comprising a stop flange extended around the periphery thereof, a plurality of contact holes adapted to receive the contact pins of said electric plug, and a power cord extended from said contact holes and inserted through said hollow suspension rod for connection to power supply;    said lock member is a tubular member axially movably mounted on said barrel and connectable to said holder base to hold down said barrel in an engagement position where said retaining grooves are kept in engagement with said retaining blocks.    
   
   
       2 . The ceiling fan mounting structure as claimed in  claim 1 , wherein said holder base comprises a bottom plate affixed to a top side of said fan motor, a hollow shaft upwardly perpendicularly extended from said bottom plate; said retaining blocks are equiangularly situated at the periphery of said hollow shaft remote from said bottom plate.  
   
   
       3 . The ceiling fan mounting structure as claimed in  claim 2 , wherein said retaining blocks are conical blocks; said retaining grooves are conical grooves fitting said retaining blocks.  
   
   
       4 . The ceiling fan mounting structure as claimed in  claim 2 , wherein said electric plug is mounted inside said hollow shaft, comprising two locating pins, said locating pins having different diameters; said electric socket comprises two locating holes adapted to receive said locating pins upon insertion of said contact pins into said contact holes.  
   
   
       5 . The ceiling fan mounting structure as claimed in  claim 2 , wherein said hollow shaft of said holder base comprises an outer thread; said barrel comprises a stop flange extended around the periphery of the front side thereof; said barrel comprises an inner thread for threading onto the outer thread of said hollow shaft of said holder base, and an inside stop flange for stopping against the stop flange of said barrel upon stoppage of said lock member at the bottom plate of said holder base.  
   
   
       6 . The ceiling fan mounting structure as claimed in  claim 2 , wherein said barrel comprises an outer thread; said lock member comprises an inner thread threaded onto the outer thread of said barrel.  
   
   
       7 . The ceiling fan mounting structure as claimed in  claim 1 , further comprising a stop plate mounted inside said barrel, said stop plate having a center through hole for the passing of said electric socket, the diameter of said center through hole of said stop plate being smaller than the diameter of the stop flange of said electric socket; and spring member mounted inside said hollow suspension rod and stopped against said electric socket inside said barrel to force the stop flange of said electric socket against said stop plate.  
   
   
       8 . The ceiling fan mounting structure as claimed in  claim 1 , further comprising a connector threaded onto one end of said hollow suspension rod and adapted to connect said hollow suspension rod to said barrel, said connector comprising an outer thread threaded into an inner thread in said barrel.