Abstract:
A computer enclosure includes a chassis ( 90 ), a cover ( 10 ) and a resilient member ( 50 ). The chassis includes a recess ( 911 ) and at least one locking member ( 70 ). A cover is mounted on the chassis. The cover has a stop ( 115 ) adapted to engage with the locking member for securing the cover on the chassis. The resilient member is attached to the cover and compressed in the recess for forcing the cover to move away from the chassis when the locking member is disengaged from the stop.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a computer enclosure, more particularly to a computer enclosure with a cover and a chassis attached together. 
   2. Background of the Invention 
   With the popularization of computers, our modern society is closely linked to computers. A computer enclosure generally includes a chassis and a cover assembled thereto. It is required that a computer cover should be demounted and mounted conveniently for checking malfunction of hardware and repairing interior components of a computer. A typical mounting assembly usually utilizes a plurality of screws, directly attaching a computer cover to a computer chassis. Thereby, screwdrivers or other detaching tools are necessary for installation or removal of the computer cover in assembly or disassembly processes, which is laborious and time-consuming. 
   Generally, the cover is assembled to the chassis by screws and which takes time in assembly and disassembly. This also inevitably increases the manufacturing cost. In addition, screws or the equivalents are also parts of inventory which should be carefully monitored in order to prevent a shutdown of the production line. Understandably, some attempts have been taken to introduce the snapping type enclosure by using less or without screws. Therefore, an improved mounting assembly for a cover of a computer enclosure that overcomes the above-mentioned problems is desired. 
   What is needed, therefore, is a mounting assembly for a cover of a computer enclosure facilitating engagement and disengagement between a cover and a chassis. 
   SUMMARY 
   A computer enclosure includes a chassis, a cover and a resilient member. The chassis includes a recess and a locking member. A cover is mounted on the chassis. The cover has a stop adapted to engage with the locking member for securing the cover on the chassis. The resilient member is attached to the cover and compressed in the recess for forcing the cover to move away from the chassis when the locking member is disengaged from the stop. 
   Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which: 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an exploded, isometric view of a computer enclosure in accordance with a preferred embodiment of the present invention including a cover, a chassis, a locking member and a resilient member; 
       FIG. 2  is an isometric view of the locking member of  FIG. 1 ; 
       FIG. 3  is an partially assembled view of  FIG. 1 , showing the resilient member assembled to the cover and the locking member assembled to the chassis; 
       FIG. 4  is an enlarged, isometric view of portion IV in  FIG. 3 ; and 
       FIG. 5  is an assembled isometric view of  FIG. 1 . 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to  FIGS. 1 and 2 , a computer enclosure includes a cover  10 , a pair of pressing members  30 , a pair of resilient members  50 , a pair of locking members  70  and a chassis  90 . The cover  10  is secured to the chassis  90  via the locking member  70 , and is removed from the chassis  90  via the pressing member  30  and the resilient member  50 . 
   The cover  10  includes two opposite side panels  11 . A distal end of each side panel  11  is bent inwardly and perpendicularly to form a flange  13 . A slot  133  and a pair of screw holes  131  are defined in each flange  13 . A hole  111  is defined in each side panel  11  near the flange  13 . A stop  115  is formed on an inner surface of each side panel  11 . Each side panel  11  further includes a plurality of latching pieces  119  each defining a cutout  120 . 
   The pressing member  30  includes a second flange  31  bent vertically from one free end of the pressing member  30  and a button  35  protruding on the other free end. The second flange  31  defines a pair of screw holes  32  corresponding to the screw holes  131  in the cover  10 . A tab  33  for engaging in the slot  133  is formed on the second flange  31 . The pressing member  30  further includes an upstanding post  34  on an inner side of the second flange  31 . The pressing member  30  is fastened to the cover  10  via a pair of screws  40 . 
   The resilient member  50  has a spring  51  and a fixing portion  53  formed outwardly on one end thereof. The post  34  can be enclosed in the spring  51 . 
   The locking member  70  is made of elastic material, i.e. plastics, metals and so on. The locking member  70  includes a pair of wings  71 , an elastic finger  75  formed between the two wings  71  and a connecting portion  73  connecting an end of the elastic finger  75  and the pair of wings  71  together. Thus, the other end of the elastic finger  75  is adapted to be bent around the connecting portion  73 . Each wing  71  forms a first hook  711  at a free end thereof. A lock aperture  713  is defined in the middle of each wing body, and a clip  715  is formed on one edge of the lock aperture  713 . The connecting portion  73  defines a cutout  731  in the middle part of its edge. A strip  733  is formed in the cutout  731 . A second hook  753  is formed at the other end of the elastic finger  75 . A protrusion  751  extends outward from the elastic finger  75 . 
   The chassis  90  includes two opposite side walls  91  each defining a recess  911  at a front corner thereof. Corresponding to the strip  733  and the clips  715  on the locking member  70 , a L-shaped tab  913  and a pair of L-shaped tabs  915  are respectively stamped inwardly from each side wall  91 . A first opening  916  for receiving the protrusion  751  of the locking member  70  is defined on side wall  91 . A pair of second openings  917  is defined around the first opening  916 , corresponding to the first hooks  711  on the wings  71 . A third opening  918  is defined adjacent to the first opening  916 , corresponding to the second hook  753  of the locking member  70 . Each side wall  91  is formed to have a shoulder  92  that defines a plurality of slits  919  corresponding to the latching pieces  119  of the cover  10 . 
   Referring to  FIGS. 3 and 4 , in assembly of the locking member  70 , the tab  913  is engaged in the cutout  731 , and the tabs  915  are engaged in the lock apertures  713 . The tabs  913 ,  915  catch on the strip  733  and clips  715 . The first hooks  711  engage in the second openings  917 . The tabs  913 ,  915  urge the first hooks  711  and the second hook  753  of the locking member  70  to engage into the second openings  917  and the third opening  918  of the chassis  90  respectively, and the second hook  753  is protruded out of an outer side of the side wall  91 . So the locking member  70  is secured on the inner side of the side wall  91 . At the same time, the protrusion  751  is positioned in the first opening  916  and extends through the first opening  916  to protrude out of the outer side of the side wall  91 . 
   The resilient member  50  is attached to the post  34  with the fixing portion  53  in alignment with one of the screws holes  32  of the pressing member  30 . The screws  40  are screwed into the screw holes  131  and the screw holes  32  to secure the pressing member  30  on the inner side of the side panel  11  with the button  35  in alignment with the hole  111  to be able to swing on the side panel  11 . Thus, the resilient member  50  is secured with the pressing member  30 , and the pressing member  30  is secured to the cover  10 . 
   Referring to  FIG. 5 , the cover  10  is put on the chassis  90 . The latching pieces  119  of the cover  10  are inserted into the slits  919  of the chassis  90 . The free end of the resilient member  50  is received in the recess  911  of the chassis  90 . Then the cover  10  is pushed horizontally. The latching pieces  119  slide in the slits  919  and the resilient member  50  is compressed against a wall of the recess  911 . During the movement, the stop  115  forces the second hook  753  to be inwardly deformed, thereby allowing the stop  115  to pass by. Then the second hook  753  rebounds and engages with the stop  15  to stop the cover  10  to slide backward. At the same time, the cutout  120  of the latching piece  119  snaps at an edge of the slit  919 . So the cover  10  is mounted on the chassis  90 . The button  35  is in alignment with the protrusion  751 . 
   When disassembling the cover  10 , pressure applied to the button  35  pushes the corresponding protrusion  751  inwardly to deform the elastic finger  75  to cause the second hook  753  escaping from the stop  115 . The resilient member  50  rebounds and urges the cover  10  to slide reversely on the chassis  90 . So the cover  10  can be removed from the chassis  90 . 
   It is believed that the present invention and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.