Patent Publication Number: US-2007096853-A1

Title: Indirect power-linking device

Description:
FIELD OF THE INVENTION  
      The invention relates to an indirect power-linking device, which is applied to the indirect power transmission between a power-driving device and a power-driven device so that the power-driven device generates a powerful operation driven by the traction of the power-driving device.  
     BACKGROUND OF THE INVENTION  
      As shown in  FIG. 1 , Taiwan Patent Application No. 94130223 discloses a cooling device. The cooling device includes a cooling fan  50  and a heat sink  21 . The heat sink  21  directly contacts with a heating element  81  to absorb the heat therefrom. The cooling fan  50  is disposed on the heat sink  21  to dissipate heat.  
      The heat sink  21  contains a central heat conducting body  22 . A plurality of cooling fins  23  extend from the periphery of the central heat conducting body  22 . The central heat conducting body  22  has an absolutely sealed and hollow chamber  221  therein. The chamber  221  is filled with a cooling liquid and disposed an agitator  25 . The locations corresponding to the agitator  25  and a rotor of the cooling fan are disposed the permeability components  251  &amp;  54 , and the magnetic attraction and mutual traction exist between the permeability components  251  &amp;  54 .  
      As a result, by means of the synchronous operation magnetically drawn by a rotor  53  and the agitator  25 , the cooling liquid carrying heat in the chamber  221  is agitated by the rotation of the agitator  25  so as to result in better cooling effect. Meanwhile, the chamber  221  remains as a fully sealed space without having the overflow issue of the cooling liquid.  
      Accordingly, the permeability components  251  &amp;  54  are the crucial design for the rotor  53  and the agitator  25  to exhibit the indirect linking operation. As such, based on the spirit striving for perfection, the invention specifically targets at the indirect linking device for further improvement so that those driven devices similar to the agitator  25  generate synchronous and more powerful operation driven by the traction of power source, attaining the optimal cooling effect.  
     SUMMARY OF THE INVENTION  
      In view of this, the present invention provides an indirect linking device, which includes a power-driving device and a power-driven device. The locations where correspond to the power-driving device and the power-driven device mutually dragging are disposed respectively with magnets necessarily having at least two magnetic poles, such as N pole and S pole.  
      Consequently, when the power device rotates, the magnetic field lines between the magnets of the power-driving device and the power-driven device are distorted to result in the suppressive effect, further forming a rotational torque to drive and synchronously rotate the power-driven device as a result of the magnetic traction of the power device.  
      If the power-device pertains to the preferred embodiment of a rotor of a cooling fan and the power-driven device pertains to the preferred embodiment of a cooling liquid agitator, the agitator generates a powerful operation arising from the torque formed by the suppressive effect of the magnetic field lines and the indirect magnetic traction of the rotor, so as to agitate the cooling liquid. The cooling liquid absorbing heat becomes a dynamic hot liquid that uniformly diffuses and conducts the heat to each cooling fin to facilitate the heat dissipation of the fan, achieving a faster and more efficient cooling effect.  
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a cross-sectional schematic view of the conventional structure;  
       FIG. 2  is a cross-sectional schematic view showing the first structure of the present invention;  
       FIG. 3  is a partially exploded view showing the first structure of the present invention;  
       FIG. 4  is a partially exploded view showing the second structure; and  
       FIG. 5  is a cross-sectional view showing the preferred embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
      The invention relates to an indirect power-linking device, which has magnets disposed respectively at the locations where corresponds to a power-driving device and a power-driven device mutually drag. The magnets disposed respectively at the power-driving device and the power-driven device all have at least two magnetic poles so as to make the power-driving device and the power-driven device operate synchronously and generate powerful operation, achieving the optimal cooling effect.  
      Listed below are several preferred embodiments depicting the respective position of each part in the present invention.  
      Please also refer to  FIG. 2  and  FIG. 3  containing a power-driving device  30  and a power-driven device  40 , wherein the magnets  31 ,  41  are disposed at the locations where corresponds to the power-driving device  30  and the power-driven device  40  mutually dragging, and all have at least two magnetic poles, e.g. N pole and S pole. The magnets  31 ,  41  may take a form of a one-piece ring and a ring assembled by a plurality of rectangular plates.  
      When the power-driving device  30  is in a still state, the N pole of the magnet  31  of the power-driving device  30  attracts the S pole of the magnet  41  of the power-driven device, and the S pole of the magnet  31  of the power-driving device  30  attracts the N pole of the magnet  41  of the power-driven device  40 . When the power-driving device  30  is rotating, the magnetic field lines between the magnet  31  of the power-driving device  30  and the magnet  41  of the power-driven device  40  are distorted to generate a suppressive effect further forming a rotational torque. The rotational torque drives the power-driven device  40  to synchronously rotate and generate a powerful operation due to the magnetic traction of the power-driving device  30 .  
      Besides, the present invention can be the structural design as shown in  FIG. 4 . The power-driving device  30  and the power-driving device  40  are disposed at least two (four in  FIG. 4 ) magnets  32 ,  42  respectively, and the magnets  32 ,  42  are located at the positions where correspond to the power-driving device  30  and the power-driven device  40  that mutually drag.  
      The magnet  32  of the power-driving device  30  shall have at least an N pole and an S pole and are arranged in an alternative N-S-N-S ring alignment. The magnet  42  of the power-driven device  40  shall also have at least an N pole and an S pole and are also arranged in an alternative N-S-N-S ring alignment. In addition to the circular design shown in  FIG. 4 , the magnets  32 ,  42  can be also formed as a ring assembled by the rectangular plates.  
      Therefore, when the power-driving device  30  rotates, a torque drives the power-driven device  40  to rotate as a result of the suppressive effect generated by distorting the magnetic field lines. By means of the magnetic traction, the power-driven device  40  and the power-driving device  30  generate a synchronous and powerful operation.  
      Furthermore,  FIG. 5  is a schematic view showing the embodiment of the present invention. The power-driving device could be a motor of a cooling fan  50  and the power-driven device could be an agitator  25  of a cooling device  21 .  
      The cooling device  21  includes a central heat conducting body  22  and a plurality of cooling fins  23  extending from the periphery thereof. The bottom of the central heat conducting body  22  is directly in contact with a heating element  81  and an absolutely sealed hollow chamber  221  is formed therein. The chamber  221  is filled with a cooling liquid and the agitator  25  is disposed in the chamber  221 .  
      The magnets  31 ,  41  are disposed between a rotor  53  of the cooling fan  50  and the agitator  25  and shall be located at the locations to which mutually correspond and have magnetic poles with at least two polarities, such as N and S poles.  
      As such, when the rotor  53  of the cooling fan  50  rotates, the magnetic field lines between the magnet  31  of the rotor  53  and the magnet  41  of the agitator  25  are distorted in generation of a suppressive effect so as to further form a rotational torque for driving the agitator  25  and the rotor  53  to generate a synchronous and powerful operation. The agitator  25  can agitate the cooling liquid filled in the chamber  221  so that the cooling liquid absorbing heat becomes a dynamic hot liquid and immediately and uniformly diffuses and conducts heat to each cooling fin  23  to facilitate the heat dissipation of the cooling fan  50 , achieving a faster and more efficient cooling effect.  
      In sum, by means of the indirect magnetic traction between the power-driving device and the power-driven device, the invention brings about the faster and better cooling effect while the chamber remains as a fully sealed space, ruling out the issue of the cooling liquid overflow and affecting no operational speed of the cooling fan. Therefore, the present invention not only has a novelty and a progressiveness, but also has an industry utility.  
      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 embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the specification, appended claims or figures, which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.