Abstract:
A fan device for easily being attached to a fixing plate includes a pair of sliding slots symmetrically defined in two opposite sides thereof, and at least one positioning block extending from at least one of the bottom and the top of the fan device and located close to one same side of the fan device.

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to heat-dissipating components and, particularly, to a fan device and fan device assembly. 
     2. Description of Related Art 
     In a typical computer system, a plurality of fans are secured by screws or the like to an enclosure of the computer system and is used for producing a flow of cooling air over certain electrical components within the enclosure, dissipating heat generated by the closely spaced electrical components so that the components operate within a desired temperature range. However, as computer systems become smaller in size, the components become more tightly arranged within the enclosure of the computer system. When the fans are secured to and/or removed from the enclosure, use of a tool for installing and/or removing screws may cause damage to the components, as there is no enough space for the tool to maneuver within the enclosure of the computer system. In addition, the installation or removal of the screws is time consuming and troublesome. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIGS. 1 and 2  are exploded, isometric views of a first embodiment of a fan device assembly, viewed from different aspects. 
         FIG. 3  is an assembled, isometric view of the fan device assembly of  FIG. 1 . 
         FIG. 4  is an assembled, isometric view of the fan device assembly of  FIG. 2 . 
         FIG. 5  is an exploded, isometric view of a second embodiment of a fan device assembly. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIGS. 1 and 2 , a first embodiment of a fan device assembly includes a fixing plate  20 , and a fan device detachably attached to the fixing plate  20 . The fan device is a fan  10 . The fan  10  includes a pairs of first sidewalls  121 , a pair of second sidewalls  123 , and a pair of end walls  122  perpendicularly disposed at the tops and the bottoms of the first sidewalls  121  and the second sidewalls  123 . The pair of first sidewalls  121  is perpendicular to the pair of second sidewalls  123 . Each of the first sidewalls  121  includes two sliding slots  125  symmetrically defined therein and respectively along the bottom edge and the top edge thereof. A pair of wedged positioning blocks  126  respectively extends from each of the end walls  122 , and the wedged positioning blocks  126  are adjacent to the right-hand second sidewall  123 . Each of the positioning blocks  126  includes a guiding wall  127  slantingly extending from the corresponding end wall  122 , and a positioning wall  128  perpendicular to the corresponding end wall  122 . 
     The fixing plate  20  includes a rectangular ventilation area  21 . Two lines of L-shaped hooks  24 , which extend perpendicularly from the plate  20  and bend toward each other, are arranged at two opposite first edges of the ventilation area  21 , to define a slideway  22  therebetween. Each line includes two hooks  24 . A stopping tab  25  and a pair of positioning rectangular holes  26  are disposed at two ends of the railway  22 , respectively. The two positioning holes  26  are respectively located beside the corresponding hooks  24  on one of the ends. 
     Referring to  FIGS. 3 and 4 , in this illustrated embodiment, the bottom end wall  122  is attached to the fixing plate  20  and slidably received in the railway  22 , with the hooks  24  slidably engaged in the bottom sliding slots  125  of the first sidewalls  121 . One of second sidewalls  123  is stopped by the stopping tab  25  of the fixing plate  20 . The positioning blocks  126  on the bottom end wall  122  engage in the positioning holes  26  of the fixing plate  20 , with the positioning walls  128  blocked by edges of the rectangular positioning holes  26 . Thus, the fan  10  is fixed on the fixing plate  20 . In other embodiments, the top end wall  122  of the fan  10  can be slidably attached to the fixing plate  20 . To detach the fan  10  from the fixing plate  20 , the wedged positioning blocks  126  are pushed out of the positioning holes  26 . 
     Referring to  FIG. 5 , a second embodiment of the fan device assembly includes a fixing plate  40 , and a fan device detachably attached to the fixing plate  40 . The fan device includes a fan  30 , and a pair of mounting sheets  50  attached to the fan  30 . The fan  30  includes a pair of spaced rectangular end walls  32  each with a pair of opposite edges  321 , and a pair of opposite edges  322  perpendicular to the edges  321 . The end walls  32  include a plurality of mounting holes  323  each defined in a corner thereof. Each mounting sheet  50  includes a pair of sliding slots  55  defined in an outside thereof and respectively along the bottom edge and the top edge thereof, a pair of wedged positioning blocks  53  respectively extending from the top and the bottom of the mounting sheet  50  and adjacent to ends of the sliding slots  125  at one same end of the mounting sheet  50 , and two pairs of mounting tabs  57  extending from an inside of the mounting sheet  50  from both ends thereof and vertically aligned within each pair. Each pair of vertically aligned mounting tabs  57  includes two posts  573  extending oppositely away from each other. The positioning blocks  53  of each mounting sheet  50  are also located adjacent to ends of the sliding slots  125 . Each of the positioning blocks  53  includes a guiding wall  532  slantingly extending from the top or the bottom of the mounting sheet  50 , and a positioning wall  534  perpendicular to the top or the bottom of the mounting sheet  50 . 
     The fixing plate  40  is similar to the fixing plate  20  and includes a rectangular ventilation area  41 . Two lines of L-shaped hooks  44 , which extend perpendicularly from the fixing plate  40  and bend toward each other, are arranged at two opposite first edges of the ventilation area  41 , to define a slideway  42  therebetween. Each line includes two hooks  44 . A stopping tab  45  and a pair of positioning rectangular holes  46  are disposed along two corresponding ends of the railway  42 . The two positioning holes  46  are respectively located beside the corresponding hooks  44  along one of the ends opposite to the stopping tab  45 . 
     In assembly of the fan device of the second embodiment, the two mounting sheets  50  are attached to the fan  30  toward the opposite edges  321  of the end walls  32 , with the mounting tabs  57  sandwiched between the two end walls  32  and the posts  573  of the mounting tabs  57  engaging in the mounting holes  323  of end walls  32 . The bottoms of the mounting sheets  50  are attached to the fixing plate  40  and slidably received in the railway  42 , with the hooks  44  engaging in the bottom sliding slots  53  of the mounting sheets  50 . One of the pair of opposite edges  322  of the bottom end wall  32  is stopped by the stopping tab  45 . The bottom positioning blocks  53  of the mounting sheets  50  engage in the positioning holes  46  of the fixing plate  40 , with the positioning walls  534  blocked by edges of the rectangular positioning holes  46 . Thus, the fan device is fixed on the fixing plate  40 . In other embodiments, the top of the fan device can be slidably attached to the fixing plate  40 . To detach the fan device from the fixing plate  40 , the wedged positioning blocks  53  are pushed out of the positioning holes  46 . 
     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.