Abstract:
A distributor structured for a 360-degree rotary ceiling fan comprises a main housing with an outer shell and a pedestal, a central shaft passing through the outer shell and the pedestal, and a power distribution ring unit around the central shaft in the main housing. The power distribution ring unit comprises several electrically conductive ring units and insulation ring units. The electrically conductive ring units are interlaced with the insulation ring units. One terminal of the electrically conductive ring unit is connected to an external power supply, while the other one is connected to a ceiling fan. The carbon brush being used, the environment even may be prevented from being polluted and the human body may be prevented from being harmed, the carbon brush does not easily bring poor electric conduction caused by dust, and the issues on difficult periodical replacement and maintenance of the carbon brush is solved.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to a distributor structured for a 360-degree rotary ceiling fan. 
   2. Description of the Related Art 
   With reference to  FIG. 1  as a 3D exploded view illustrating a distributor for a conventional 360-degree rotary fan, a power distribution turnplate  1  comprises a rotary axis  11  pivoted onto a fixed plate  12 . A power distribution ring unit  13  is further set around the rotary axis  11  with a bolt  133  as a fixture. The power distribution ring unit  13  is further divided into several insulation rings  131  and electrically conductive copper rings  132 . Further, an anchor block  14  is provided on the fixed plate  12 . A bi-way hollow receiving hole  141  is formed at an inner side of the anchor block  14 . The receiving hole  141  is formed with a spring  142  and a carbon brush  143 . An electrically conductive strip  144  is provided outside the anchor block  14  opposite to the receiving hole  141 . The electrically conductive strip  144  is connected to an electrical wire  145 , while the electrical wire  145  is connected to power. Next, when the carbon brush  143  that is sustained by the spring  142  with elasticity supports the electrically conductive copper ring  132 , the spring  142  may be used to suppress the electrically conductive strip  144 , and thus the electrically conductive copper ring  132 , the carbon brush  143 , and the electrical wire  145  are formed into a loop communicating with each other. 
   On the conventional power distribution turnplate  1 , the carbon brush  143  is used to form the electric loop so that the carried fan  360  may run at 360 degrees for uniform heat dissipation. Being used over a long period of time, the carbon brush  143  is polluted with dust and thus causes poor electrical conduction. The carbon brush  143  contains carbon powder with poisonous lead that is harmful to human body and pollutes the environment. Further, the carbon brush  143  must be replaced periodically and is not easily maintained, so improvement is necessarily made. 
   Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above. 
   SUMMARY OF THE INVENTION 
   A distributor for a 360-degree rotary ceiling fan according to this invention is provided on a turnplate. The distributor further comprises a main housing, a central shaft, and a power distribution ring unit. The main housing comprises an outer shell and a pedestal, in which the outer shell is connected to the pedestal. The outer shell&#39;s sealing side is formed with a thru hole, and its outer circumferential wall is formed with a lead-wire thru slot. A second thru hole is mostly formed in the center of pedestal. Further, the pedestal I connected to the turnplate. The central shaft meanwhile passes through the first and second holes and its outer circumferential wall is formed axially with several long wedge slots. A shift limit slot is formed in the central shaft opposite to the top of another side of the pedestal. Next, four rib lumps are formed around between the wedge slots and limited between the outer shell and the pedestal. Next, the power distribution ring unit is set around the central shaft and arranged in the main housing, and comprises a plurality of electrically conductive ring units and insulation ring units. The electrically conductive ring units is interlaced with the insulation ring units. Besides, one terminal of the electrically conductive ring unit is connected to an external power source, while the other one is connected to a ceiling fan. Thus, even if the carbon brush is used, the environment may be prevented from being polluted and the human body may be prevented from being harmed, the carbon brush is not apt to bring poor electric conduction caused by dust, and the issues on difficult periodical replacement and maintenance of the carbon brush is even solved. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a 3D exploded view of a conventional distributor for a 360-degree rotary fan; 
       FIG. 2  is a 3D exploded view of a distributor for a 360-degree rotary ceiling fan according to this invention; 
       FIG. 3  is a sectional assembly view of a distributor for a 360-degree rotary ceiling fan according to this invention; 
       FIG. 4  is a 3D view of a partial electrically conductive ring unit according to this invention; 
       FIG. 5  is a sectional assembly view of the distributor for the 360-degree rotary ceiling fan according to this invention that is arranged on a turnplate; and 
       FIG. 6  is a partially sectional view of the distributor for the 360-degree rotary ceiling fan according to this invention that is assembled with a ceiling fan. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. 
   With reference to  FIGS. 2 and 3  shown respectively as a 3D sectional view and a sectional assembly view that illustrate a distributor for a 360-degree rotary ceiling fan according to this invention, the distributor comprises a main housing  2 , a central shaft  3 , a power distribution ring unit  4 , and an elastic part  5 . 
   The main housing  2  comprises an outer shell  21  and a pedestal  22 . The outer shell  21  is a cylinder and its outer circumferential wall is formed with four locking mounts  211  each of which has inner threads (not shown). Further, the sealing side of outer shell  21  is formed with a thru hole  212  and a chamber  213 , and a long strip of lead-wire thru slot  214  passing through the chamber  213  is formed stretching upwards from the bottom of outer circumferential wall. The lead-wire thru slot  214  is further provided between the locking mounts  211  adjacent to each other. Next, the pedestal  22  is a round plate the center of which is formed with a second thru hole  223 . The first thru hole  212  communicates with the second thru hole  223 . The outer circumferential side of the pedestal  22  is formed with tabs  221  opposite to the locking mounts  211 , in which a thru hole  222  is formed in the center of each of the tabs  221 . The locking mounts  211  of the outer shell  21  are fixed with screws to the tabs  221  of the pedestal  22 . Even, the outer circumferential side of the pedestal  22  is formed in a radial direction with four locking tabs  224  the center of which are respectively formed with a thru hole  225 . 
   The central shaft  3  meanwhile passes through the first hole  212  and the second hole  223 . The central shaft  3  is a tube and is provided with a chamber  31 , and its outer circumferential wall is formed axially with four long wedge slots  32  that are spaced at intervals. A shift limit slot  33  is formed in the central shaft  3  opposite to the top of another side of the pedestal  22  and is arranged opposite to each of the wedge slots  32  close together. Next, four rib lumps  34  are formed around between the wedge slots  32  and limited between the outer shell  21  and the pedestal  22 . 
   The power distribution ring unit  4  is set around the central shaft  3  and comprises a plurality of electrically conductive ring units  41  and insulation ring units  42 . The electrically conductive ring units  41  are interlaced with the insulation ring units  42 . In a preferred embodiment of this invention, the power distribution ring unit  4  comprises three electrically conductive ring units  41  and is provided for a front wire, a neutral wire, and a ground wire of the power supply. Each of the electrically conductive ring units  41  comprises a first electrically conductive ring  411  and a second electrically conductive ring  412 . A lead wire  4111  is provided at the outer circumferential side of first electrically conductive ring  411 , passes through the lead-wire thru slot  214 , and stretches outwards for power output. In the preferred embodiment of this invention, three projecting flakes  4112  spaced downwards are provided at the outer circumferential side of the first electrically conductive ring  411  and are metal molded by stamping. The second electrically conductive ring  412  is arranged below the first electrically conductive ring  411 , and its inner circumferential side is formed with shift limit teeth  4121  opposite and wedged to the wedge slots  32 . An electrical wire  4122  is provided at one of the shift limit teeth  4121 . The electrical wire  4122  is set in the wedge slot  32  and stretches upwards and connects to an external power supply (not shown) for power input. 
   With reference to  FIG. 4  shown as a 3D view of the partial electrically conductive ring unit according to this invention, the flake  4112  of the first electrically conductive ring  411  stretches downwards and its end is formed with a free end  4113 . The free end  4113  touches the top surface of second electrically conductive ring  412 . Further, each insulation ring unit  42  comprises 2 first insulation rings  421  and 4 second insulation rings  422 . The first insulation ring  421  is provided separately on the upper and lower layers of the power distribution ring unit  4 , and its outer circumferential side is formed with a positioning tooth  4211 . The positioning tooth  4211  passes through and wedges to the lead-wire thru slot  214 . The second insulation rings  422  are respectively provided between the electrically conductive ring units  41 . In the preferred embodiment of this invention, between the electrically conductive ring units  41  adjacent to each other, 2 second insulation rings  422  are provided and arranged oppositely. A flange  4221  is provided axially around the surface of one side of the second insulation ring  422 . The flange  4221  touches the electrically conductive ring unit  41  and its inner circumferential wall is formed with the shift limit teeth  4222  being opposite and wedging to the wedge slots  32 . 
   The elastic part  5  is provided in the housing  2  and set around the central shaft  3  and above the power distribution ring unit  4 . In the preferred embodiment of this invention, the elastic part  5  is a compression spring. 
   With reference to  FIG. 5  shown as a sectional assembly view of the distributor for the 360-degree rotary ceiling fan according to this invention that is arranged on a turnplate, the distributor is provided on a turnplate  6 . A thru hole  61  the two sides of which are hollow is formed in the center of turnplate  6 . A chamber  62  is formed in the thru hole  61 , inside which a bearing  63  is provided. Further, the central shaft  3  passes through the center of housing  21  and pedestal  22  and limited thereinto. The central shaft  3  is wrapped by the elastic part  5  and the power distribution ring unit  4  and arranged in the main housing  2 . With the elastic part  5 , the first electrically conductive ring  411  may touch the second electrically conductive ring  412 . 
   With reference to  FIG. 2  shown as a partial 3D view of the electrically conductive ring unit according to this invention, several flakes  4112  on the surface of first electrically conductive ring  411  are used to reduce the friction caused between the first electrically conductive ring  411  and the second electrically conductive ring  412  at the time of turning. Next, the locking tab  224  of pedestal  22  is connected with screws to the turnplate  6 . When the turnplate  6  turns, the distributor also synchronously turns. However, the inner circumferential walls of the second electrically conductive ring  412  and second insulation ring  422  are respectively formed with the shift limit teeth  4121  and  4222  and fixed into the wedge slot  32 , so the central shaft  3 , the second electrically conductive ring  412 , and the second insulation ring  422  do not turn with the turnplate  6 , but the first electrically conductive ring  411  does. In the manner of touch of the first electrically conductive ring  411  with the second electrically conductive ring  412 , the power is transmitted from the second electrically conductive ring  412  to the first electrically conductive ring  411 . Further, a conjunction rod  7  is provided in the chamber  31  of the central shaft  3 . The conjunction rod  7  is provided with a locating pin hole  71  corresponding to the shift limit slot  33 . A pin  72  is provided passing through the locating pin hole  71 . The pin  72  is located and inserted into the locating pin hole  71  and the shift limit slot  33 . The conjunction rod  7  is pivoted securely between the distributor and the turnplate  6 . In the preferred embodiment of this invention, a shift limit ring  73  is provided in the conjunction rod  7  opposite to the circumferential wall of the bottom of bearing  63 , in which the shift limit ring  73  is wedged to the bearing  63 . Further, the locating pin hole  71  and the pin  72  are used for achievement of shift limit. 
   With reference to  FIG. 6  shown as a partially sectional view of the distributor for the 360-degree rotary ceiling fan according to this invention that is assembled with a ceiling fan, the distributor is assembled with the turnplate  6  and then arranged in a cover  8 . The cover  8  is divided into an upper cover  81  and a lower cover  82 . The turnplate  6  is provided between the upper cover  81  and the lower cover  82 . The two sides of turnplate  6  are respectively connected securely with two connecting rods  83  to a ceiling fan  84 . The lead wires  4111  of the first electrically conductive ring  411  are separately connected to the ceiling fans  84 . Even, a hanger  85  is securely connected to the conjunction rod  7  opposite to one side of the top of distributor, and the other terminal of the hanger  85  is securely arranged on the ceiling. Not being driven by a conventional motor, the turnplate  6  is driven by the running ceiling fans  84  causing counterforce to turn. 
   While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.