AN INTERLOCKING SYSTEM FOR LOCKING THE DOWN ROD ONTO THE MOTOR SHAFT OF THE CEILING FAN; AND A CEILING FAN THEREOF.

摘要

An interlocking system for preventing angular displacement of a downrod in a fan due to torque exerted from a co-axially, and partially concentrically, placed shaft; said system comprises: stepped element, in said downrod, being defined by at least a linear indentation adjoining the lengthwise edge of a linear slit in said downrod, said linear indentation being located at the external circumference of the downrod and further being defined by a stepped projection adapted to extend beyond the general inner circumference of said downrod; and notch, on said shaft, corresponding to said stepped element on said downrod, said notch adapted to receive said stepped element, thereby locking said down rod onto said shaft. There is also provided an improved fan, with a downrod and a torque exerting, co-axially, and partially concentrically, placed shaft, having an interlocking system for preventing angular displacement of said downrod.