Computer system with circuit board

Abstract

A computer system includes a chassis, a bracket and a tray. The chassis includes a bottom plate and two parallel side plates perpendicular to the bottom plate. A side plate post is located on each of the side plates. The bracket is located on the bottom plate between the side plates. A bracket post is located on the bracket. The tray defines two tray positioning openings therein. The tray positioning openings receive the bracket post and side plate post so as to secure the tray in the chassis between the bracket and the one of the side plates.

1 . A computer system comprising:
 a chassis comprising a bottom plate and two parallel side plates perpendicular to the bottom plate, a slide plate post located on the each of the side plates;   a bracket located on the bottom plate between the side plates, a bracket post located on the bracket; and   a tray defining two positioning openings therein, the positioning openings receiving the bracket post and the side plate post so as to secure the tray in the chassis between the bracket and the one of the side plates.   
     
     
         2 . The computer system of  claim 1 , wherein the tray comprises a bottom wall and two side walls bent from opposite edges of the bottom wall; the bottom wall is configured to secure a circuit board parallel to the bottom plate of the chassis; each positioning opening is defined in one of the side walls. 
     
     
         3 . The computer system of  claim 1 , wherein each of the tray positioning openings comprises a entry and a locking hole; the side plate post comprises a head portion and a neck portion; the bracket post comprises a head and a neck; the side plate post head portion and the bracket post head are inserted through the positioning openings via the entries so as to position the side plate post neck portion and the bracket post neck in the positioning opening; the side plate neck portion and the bracket post neck engage in the locking holes to locate the tray in the chassis. 
     
     
         4 . The computer system of  claim 3 , wherein each of the side plate post head portion and the bracket head has a diameter smaller than a width of the entry, but greater than a width of the locking hole; each of the side plate post necking portion and the bracket post neck has a diameter smaller the width of the locking hole. 
     
     
         5 . The computer system of  claim 1 , wherein the bottom plate of the chassis defines two slits; a tab extends from the bracket and engages in the slits to prevent the bracket moving along directions parallel to the bottom plate. 
     
     
         6 . The computer system of  claim 5 , wherein a support flange extends from the bracket to support the bracket on the bottom plate of the chassis; the support flange defines a securing hole therein; the bottom plate defines a securing hole therein; a fastener engages in the support flange securing hole and the bottom plate securing hole so as to prevent the bracket moving along a direction perpendicular to the bottom plate. 
     
     
         7 . A computer enclosure comprising:
 a chassis comprising a bottom plate and two parallel side plates substantially perpendicular to the bottom plate;   a bracket located on the bottom plate in the chassis spaced from one of the side plates for securing a first circuit board on the bottom plate between the bracket and the one side plate; and   a tray secured on the bracket and the one side plate and configured for securing a second circuit board parallel to the first circuit board.   
     
     
         8 . The computer enclosure of  claim 7 , wherein a tray defines two positioning openings therein; a bracket post is located on the bracket; a side plate post is located on the one side plate; the bracket post and the side plate post engage in the corresponding tray positioning openings so as to locate the tray in the chassis between the bracket and the one side plate. 
     
     
         9 . The computer enclosure of  claim 8 , wherein the tray comprises a bottom wall and two side walls bent from opposite edges of the bottom wall; the bottom wall is configured to secure the second circuit board parallel to the bottom plate of the chassis; the positioning openings are defined in the side walls. 
     
     
         10 . The computer enclosure of  claim 8 , wherein each of the tray positioning opening comprises an entry and a locking hole; the side plate post comprises a head portion and a neck portion; the bracket post comprises a head and a neck; the head portion is inserted through the positioning opening via the entry so as to position the neck portion in the positioning opening; the neck portion engages in the locking hole to locate the tray in the chassis. 
     
     
         11 . The computer enclosure of  claim 10 , wherein each of the side plate post head portion and the bracket post head has a diameter smaller than a width of the entry, but greater than a width of the locking hole; the side plate post neck portion has a diameter smaller than the width of the locking hole. 
     
     
         12 . The computer enclosure of  claim 7 , wherein the bottom plate of the chassis defines two slits; a tab extends from the bracket and engages in the slits to prevent the bracket moving along directions parallel to the bottom plate. 
     
     
         13 . The computer enclosure of  claim 12 , wherein a support flange is bent from the bracket for to support the bracket on the bottom plate of the chassis; the support flange defines a securing hole therein; the bottom plate defines a securing hole therein; a fastener engages in the support flange securing hole and the bottom plate securing hole so as to prevent the bracket moving along a direction perpendicular to the bottom plate.