Abstract:
A heat dissipating device includes a heat dissipating element and a bracket. The bracket includes a first fixing portion and a second fixing portion. The first fixing portion is to fix the heating dissipating element. The second fixing portion is movably mounted to the first fixing portion. The second fixing portion is configured to fix the bracket to another apparatus to adjust a distance between the heat dissipating element and the apparatus.

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to heat dissipating devices, and particularly, to a heat dissipating device having a bracket. 
     2. Description of the Related Art 
     It is important to dissipate heat from an electronic device, such as a server chassis or a computer chassis. One way to dissipate heat from an electronic device is to fix a fan to a thermal sink of a central processing unit (CPU). Another way is to fix a fan to an inner wall of the computer chassis. However, the fan needs to be fixed at a specific position of the computer chassis causing limitations. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded, isometric view of an exemplary embodiment of a heat dissipating device, the heat dissipating device including a latching member. 
         FIG. 2  is an inverted, enlarged view of the latching member of  FIG. 1 . 
         FIG. 3  is an assembled, isometric view of the heat dissipating device of  FIG. 1 . 
         FIG. 4  is an exploded, isometric view of a board and the heat dissipating device of  FIG. 3 . 
         FIG. 5  is an assembled view of the board and the heat dissipating device of  FIG. 4 . 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIG. 1 , an exemplary embodiment of a heat dissipating device  100  includes a heat dissipating element such as a fan  10  and a bracket  60 . The bracket  60  includes a first fixing portion  20  and a second fixing portion  30 . The fan  10  defines four fixing holes  12  in four corners of the fan  10 . 
     The first fixing portion  20  includes a frame  22  and two screw pillars  28 . The frame  22  includes a bottom wall  21 , a top wall  23  parallel to the bottom wall  21 , two sidewalls  24  connecting to corresponding ends of the bottom wall  21  and the top wall  23 , and a flange  25  extending from corresponding sides of the bottom wall  21 , the top wall  23 , and the sidewalls  24  to form an annular part at a side of the first fixing portion  20 . A receiving cavity  26  is bounded by the bottom wall  21 , the top wall  23 , the end walls  24 , and the flange  25 , and configured to receive the fan  10 . An edge of the flange  25  bounds to define an opening  252 , corresponding to the fan  10 . Two through holes  222  are defined in two opposite corners of the flange  25 . Two elongated locating grooves  224  are defined in the other two opposite corners of the flange  25  with one locating groove  224  being perpendicular to the bottom wall  21 . The other locating groove  224  is parallel to the bottom wall  21 . The screw pillars  28  are perpendicularly positioned under the bottom wall  21 , to support the frame  22 . 
     The second fixing portion  30  includes two spindle collars  34 , two latching members  36 , and two screw nuts  38 . 
     Referring to  FIG. 2 , each of the latching members  36  includes a screw pole  361  and a latching portion  362  positioned at a first end of the screw pole  361 . The latching portion  362  includes a plurality of wedge-shaped elastic protrusions  364  distantly extending out from a circumference of the screw pole  361  towards a second end opposite to the first end of the screw pole  361 . Each protrusion  364  includes two guiding surfaces  365 ,  366  at a top and a bottom of the protrusion  364 , respectively. The spindle collar  34  axially defines a threaded hole  342 , corresponding to the corresponding screw pillar  28  and the screw pole  361  of a corresponding latching member  36 . 
     Referring to  FIG. 3 , in assembly, the fan  10  is received in the receiving cavity  26  of the first fixing portion  20  and fixed in the first fixing portion  20  via four elastic pins  40  passing through the locating grooves  224  and the through holes  222  of the frame  22  to engage in the fixing holes  12  of the fan  10 . The screw nuts  38  fit about the screw poles  361  of the latching members  36 . The screw pillars  28  and the screw poles  361  of the latching members  36  are engaged in the corresponding spindle collars  34  from opposite ends of the spindle collars  34 . In other embodiments, the fan  10  with other dimensions can be fixed in the first fixing member  20  via adjusting positions of the pins  40  in the locating grooves  224 . 
     Referring to  FIGS. 4 and 5 , in use, the heat dissipating device  100  is mounted to a board  50 , such as a motherboard of a computer, that defines two through holes  52  in the vicinity of a central processing unit (CPU) (not shown) set on the board  50 . A diameter of each through hole  52  is smaller than a diameter of the latching portion  362  of the corresponding latching member  36 . In other embodiments, the through holes  52  can be located on other positions of the board  50  according to need. 
     The latching portions  362  of the locating members  36  are inserted through the through holes  52  of the board  50  to deform the protrusions  364  via sidewalls bounding the through holes  52  resisting against the guiding surfaces  365  of the protrusions  364  of the latching members  36 . The screw nuts  38  are adjusted to firmly resist against the board  50 , therefore firmly engaging the board  50  together with the latching portions  362  of the latching member  36 . 
     The heat dissipating device  100  can be disengaged from the through holes  52  of the board  50  via the sidewalls bounding the through holes  52  resisting against the guiding surfaces  366  of the protrusions  364  of the latching members  36  to deform the latching portions  362 . 
     In one embodiment, a distance between the fan  10  and the board  50  can be adjusted via rotating the spindle collars  34 . In other embodiments, the screw pillars  28  and the spindle collars  34  can be omitted, and two spindle collars  34  having threaded holes  342  are mounted to the bottom wall  21  of the frame  22  to engagably fit about the screw poles  361  of the latching members  36 . A fixing block can directly extend from the screw pole  361  of each latching member, to replace the corresponding screw nut  38 . Accordingly, a distance between the fixing block and the latching portion  362  is about equal to a thickness of the board  50 . 
     It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in details, especially in matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.