Patent Application
20150240824
This invention relates to ceiling fans and specifically to a ceiling fan downrod for quickly connecting ceiling fan motor electrical wiring and the method of accomplishing such.
Traditionally, ceiling fans have been installed by a laborious, time consuming and often cumbersome practice. The conventional ceiling fan includes a ceiling plate which is secured to an electric outlet box by passing the lead wires of the outlet box through a central circular opening in the ceiling plate. Mounting screws are passed through two elongated openings in the ceiling plate to threadably engage with two threaded holes diagonally separated from each other on the periphery of the outlet box. Alternatively, wood screws are passed through the ceiling plate and the outlet box and into a wood stud which supports the outlet box. In either event, the screws are tightened until the ceiling plate is securely mounted on the outlet box. The typical ceiling plate includes a hanging hook.
When a typical ceiling fan assembly is mounted to the ceiling plate, the motor, fan blades and an optional light assembly are secured to a canopy by a hollow downrod or hanger rod. The downrod passes through a central opening in the canopy with a ball mount located at an end of the downrod engaged by a periphery of the opening of the canopy.
The structure's electrical wires extending through the ceiling to the ceiling plate are then connected to the ceiling fan's electrical lead wires extending from the fan motor upwardly through the downrod to a position adjacent the
Typically, a ceiling fan manufacturer provides the lead wires with a length which will allow it to be coupled with the structure's electrical wiring according to length of the ceiling fan's downrod. This length is typically enough to mount the ceiling fan to a relatively tall ceiling. However, if the ceiling fan is mounted to a relatively short ceiling, the ceiling fan's lead wires must be cut by the installer to the appropriate length. A problem arising in the opposite situation wherein a ceiling fan having lead wires for a short ceiling is installed on a taller ceiling requiring the connection of additional wiring to reach the structure's electrical wiring in the area of the ceiling plate. Governmental regulations prohibit the connection of electrical wiring within an enclosed raceway such as a ceiling tan downrod.
Accordingly, it is seen that a need has long existed for a ceiling fan that could be more easily and quickly mounted to ceilings of different heights. It thus is to the provision of such that the present invention is primarily directed.
In a preferred form of the invention, a ceiling fan adapted to be coupled to a structure having electric wiring, the ceiling fan comprises an electric motor having electrical wiring leads, a canopy assembly adapted to be mounted to a ceiling of a structure, an elongated, hollow downrod having a bottom end coupled to the electric motor and a top end coupled to the canopy assembly, the hollow downrod having an access window extending therethrough, and an access panel moveable between a first position covering window and a second position exposing window.
In another preferred form of the invention, a method of installing a ceiling fan comprises the steps of (A) providing a ceiling fan having an electric motor having electrical wiring leads, a canopy assembly adapted to be mounted to a ceiling of a structure, an elongated, hollow downrod extending between the electric motor and the canopy assembly and having an access window extending therethrough, and an access panel coupleable to the downrod in a position covering the window, (B) moveable the access panel from a position covering the window to a position uncovering the window, (C) positioning the downrod to a position wherein a first end is located closely adjacent the downrod window, (D) pulling the electric motor electrical wiring leads and the first end of the length of extension electrical wires through the window to a position external of the downrod, (E) coupling the electric motor electrical wiring leads to the first end of the length of extension electrical wired, (F) moving the coupled electric motor electrical wiring leads and first end of the length of extension electrical wires back through the window and into the interior of the downrod, (G) moving the access panel back to a position covering the window, and (H) securing the access panel to the downrod in its window covering position.
With reference next to the drawings, there is shown a ceiling fan 10 in a preferred form of the invention. The ceiling fan 10 includes a fan motor housing 11, a motor 12 positioned within the motor housing 11, a downrod coupler 13 mounted to the top end of the motor 12, and a hollow downrod 15 extending upwardly from a downrod coupler 13 to the ceiling fan canopy assembly 16 which is coupled to the ceiling of a structure. The ceiling fan also includes the conventionally known components, such as a plurality of fan blades 14, an unshown switch housing, and an unshown optional light kit.
The canopy 19 coupled to the mounting plate 17 and having a central opening 20 which is preferably trilobular in shape to received a trilobular ball 21 coupled to the end of the downrod 15. Alternatively, the canopy assembly may include a conventional ball receiving bracket positioned within the canopy. The canopy assembly 16 is generally of conventional
The downrod 15 includes an elongated shaft 22 defined by a cylindrical sidewall 23 having window or access port 24 therein. The window 24 is preferably located directly or closely adjacent the downrod coupler 13, however, the invention is not limited to such a positioning of the window. Two screw mounting holes 26 extend into the downrod sidewall adjacent opposite ends of the window 24. The downrod 15 also includes a curved access panel or door 27 having two screw mounting holes 28 therethrough which are alignable with the downrod screw mounting holes 26. Two mounting screws 30 pass through the access panel screw mounting holes 28 and are threaded into the downrod screw mounting holes 26 to allow the access panel 27 to be removably mounted to the downrod shaft. A rubber gasket 31 conforming to the configuration of the access panel 27 or window may be positioned between the access panel 27 and the downrod shaft 22 to prevent moisture from entering the interior of the downrod shaft 22 through the window 24. The gasket 31 includes screw mounting holes 32 which are also alignable with the downrod screw mounting holes 26.
The fan electrical wires or leads 34 extend from the motor 12, and optional light kit, upwardly through the downrod coupler 13 and into the bottom end of the downrod 15. The fan electrical wire leads 34 terminate at a position electrically coupled to the bottom end of a length of extension electrical wires 36 at the location of the window 24. The extension electrical wires 36 extend upwardly through the interior of the downrod 15 and through the ball 21. The top end of the extension electrical wires 36 are coupled or spliced to the structure or building electrical wires at the canopy assembly 16.
In use, an installer may calculate the length of extension electrical wires 36 necessary to extend from the downrod window 24 to the canopy assembly 16 and cut a length of extension electrical wires 36 accordingly. The cut may be made either prior to or subsequent to the insertion of the extension electrical wires into the downrod. The access panel 27 is removed from the downrod shaft 22 by removing the mounting screws 30 and exposing the underlying window 24. The bottom end of the extension electrical wires 36 may be passed through the hollow downrod 15 to the window 24, wherein the ends of the motor electrical wire leads 34 and extension electrical wires 36 are pulled through the window and spliced or coupled together. The opposite or top end of the extension electrical wires 36 are then spliced or coupled to the structure electrical wires at the location of the canopy assembly.
Once the wiring splices are complete the electrical wires or leads 34 and 36 are pushed back through the window 24 and into the interior of the downrod 15. The access panel 27 is then moved to its initial position secured to the downrod shaft 22 and covering the window 24 by passing mounting screws 30 through access panel and gasket mounting holes 28 and 32 and threading item into downrod mounting holes 26.
It should be understood that with the window 24 any length of electrical wires may be quickly and easily spliced to the motor and/or light kit electrical wires to provide a
With reference next to
It should be understood that as used herein the term “ceiling” of a structure is intended to include not only the conventional ceiling of a building or house, but also any other structure which can support a ceiling fan such as an exposed beam, post, or the like.
It thus is seen that a ceiling fan is now provided that overcomes problems associated with the prior art. It should be understood that many modifications may be made to the specific preferred embodiment described herein without departure from the spirit and scope of the invention as described by the following claims.
