Abstract:
An assembly device ( 20 ) used in assembling portable electronic devices is provided. The assembly device ( 20 ) includes a support, a transmission belt ( 24 ) moveably mounted on the support and several fans ( 25 ) rotatably mounted on the transmission belt ( 24 ) for dissipating heat in the area of the transmission belt ( 24 ).

Description:
BACKGROUND 
     1. Field of the Invention 
     The present invention relates to assembly devices and, particularly, to an assembly device with temperature regulation. 
     2. Description of Related Art 
     Portable electronic devices such as mobile phones and notebooks are widely used. 
     A portable electronic device is typically assembled by placing its component parts on an assembly device, where they are assembled in a predetermined order. However, the assembly device may generate substantial heat during usage and the heat may be transferred to the portable electronic device on the assembly device, thereby influencing performance of the assembled portable electronic device and shortening the lifespan of the assembly device. Generally, heat dissipating devices are used to solve the above-mentioned problems. 
     However, heat dissipating devices not only consume lots of power, but also takes up manufacturing space. 
     Therefore, there is room for improvement within the art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the assembly device can be better understood with reference to the following drawings. These drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present assembly device. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. 
         FIG. 1  is an isometric view of an assembly device, according to an exemplary embodiment. 
         FIG. 2  is an isometric view of the fan shown in  FIG. 1 . 
         FIG. 3  is a side view of a fan showing the first state on the assembly device shown in  FIG. 1 . 
         FIG. 4  is a side view of a fan showing the second state on the assembly device shown in  FIG. 1 . 
         FIG. 5  is a side view of a fan showing the third state on the assembly device shown in  FIG. 1 . 
         FIG. 6  is a side view of a fan showing the fourth state on the assembly device shown in  FIG. 1   
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
       FIG. 1  shows an exemplary assembly device  20 . The assembly device  20  includes a plurality, e.g., four, supports, e.g., legs  21 , a driven roller  22 , a passive roller  23 , a transmission belt  24  and a plurality of fans  25 . 
     One end of each leg  21  defines a hole (not labeled). The four legs  21  are connected to the four corners of the assembly device  20  and configured to support the assembly device  20 . 
     The driven roller  22  is rotatably mounted in holes of two of the four legs  21 . The driven roller  22  is connected to a conventional driving device (not show). The driving device drives the driven roller  22  to rotate. The passive roller  23  is rotatably mounted in holes of the other two legs  21 . 
     The transmission belt  24  is securely wrapped around the driven roller  22  and the passive roller  23 , thus forming a movable outer surface  241  and an inner space  242 . The transmission belt  24  is used to carry and move parts of electronic devices (not shown) on the outer surface  241  as the driven roller  22  rotates. 
     Referring to  FIG. 2 , the fans  25  are rotatably mounted on the outer surface  241  of the transmission belt  24 . Each fan  25  includes a securing portion  251  and a plate  252  rotatably connected to the securing portion  251 . The securing portion  251  is hollow, including a peripheral outer wall  253 , two side end walls  254  and a bottom wall  257 . A hinge  255  is associated with the two side end walls  254  and the securing portion  251 . The peripheral outer wall  253  defines an opening  256 . One end of the plate  252  is pivotally connected to the hinge  255  through the opening  256 . The opening  256  allows the plate  252  to pivot the hinge  255  only from an orientation where the fan  25  is generally perpendicular to the outer surface  241  to another orientation where the fan  25  is generally parallel with the outer surface  241 . The plate  252  is a flat plate having a surface area large enough for contacting and substantially moving surrounding air, and made of a strong but light material. 
     In assembly, the driven roller  22  and the passive roller  23  are mounted on the legs  21 . The transmission belt  24  is wrapped around and tightly secured to the driven roller  22  and the passive roller  23 . The securing portion  251  is fixed to the outer surface  241  of the transmission belt  24 . The opening  256  faces the forward direction of the movement of the transmission belt  24 . The driven roller  22  is connected to the driving device. 
     Referring to  FIGS. 3 through 6 , to illustrate the action of the fans  25 , the right end of the driven roller  22  is designated X position indicated by arrow X, the lowest end of the driven roller  22  is designated Y position indicated by arrow Y, and the top end of the passive roller  23  is designated Z position indicated by arrow Z. 
     During operation of the assembly device  20 , the driving device drives the driven roller  22  to rotate, and then the driven roller  22  and the transmission belt  24  drives the passive roller  23  to rotate. One of the fans  25  moves to X position. Then the plate  252  of the fan  25  in the X position rotates about the hinge  255  until this fan  25  moves to Y position where the plate  252  freely hangs from the transmission belt  24 . As this fan  25  continues moving forward with the transmission belt  24 , the surfaces of its plate  252  cause air circulation. The surface areas of the plates  252  should be large enough that the air circulation that they create dissipates heat to lower the temperature of the transmission belt  24  as well as the air in the area of the transmission belt  24 . When this fan  25  moves to the Z position, this fan  25  rotates around the hinge  255  by inertia until the plate  252  of the fan  25  is generally parallel with the outer surface  241  of the transmission belt  24 . Thus, this fan  25  returns to its beginning position and can repeat the previous movements while other the other fans  25  rotatably mounted on the outer surface of the transmission belt  24  sequentially cycle through the various positions (e.g. X, Y, Z). 
     Due to the movement of the transmission belt  24 , fans  25  create, accelerate, and circulate airflow, and the airflow dissipates heat and lowers the temperature of the transmission belt  24  and the air in the area of the transmission belt  24 , without additional electricity or space. 
     It is to be understood, however, that even through numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms, in which the appended claims are expressed.