Open convenient computer mainframe

The utility model discloses an open convenient computer mainframe, including quick -witted case and cover, the bottom of cover just is located inner cavity of the chassis's the equal fixedly connectedwith fixed block in both sides, threaded hole is all seted up at the inside of fixed block and the top of quick -witted case both sides, the inner chamber threaded connection of screw hole has spiralshell rasp bar, spiral shell rasp bar's one end fixedly connected with hand wheel, the louvre has been seted up to the both sides of machine case, the both sides of machine case and the one side thatis located the louvre are provided with the dust screen, one side fixedly connected with bearing of hand wheel, the inner chamber fixedly connected with connecting plate of bearing. The utility modeldiscloses a cooperation of machine case, cover, fixed block, screw hole, spiral shell rasp bar, hand wheel, louvre, dust screen, bearing, connecting plate, bolt and pinhole is used, can do not have also can be quick under the c