Abstract: The present invention is to provide a wind guide device for a cooling fan mounted on a CPU of a computer comprising a first shroud and a second shroud. A first opening at one side of the first shroud having the fan mounted thereon is coupled to a vent opening on a housing of the computer for convection. A first opening at one side of the second shroud is coupled to a second opening at the other side of the first shroud to form an upper air passage and a lower air passage. Fins on one side of the CPU are partially enclosed by an L-shaped frame element extended from the second shroud so as to cause an air current generated by the fan to accelerate through the upper and lower air passages for cooling the CPU and other electronic elements therearound.

Abstract: An apparatus casing quick mounting arrangement, which includes a computer housing having an apparatus insertion slot and a plurality of locating holes at a top flange above the apparatus insertion slot and at least one elongated guide hole, an apparatus casing mounted in the computer housing in alignment with the apparatus insertion slot to hold a computer peripheral apparatus, the apparatus casing having at least one locating strip slidably hooked in the at least one elongated guide hole at the computer housing to guide the apparatus casing into position, and a spring plate mounted on the apparatus casing and coupled to the computer housing to secure the apparatus casing in position, the spring plate having an angled front mounting flange fixedly fastened to the apparatus casing at a top side, and hooked portions raised from a free end thereof at a top side and respectively engaged into the locating holes at the computer housing from a bottom side.

Abstract: A computer mainframe case and side cover arrangement, which includes a computer mainframe case having a back opening and two coupling holes respectively provided at two opposite upright side walls thereof near the back opening, a side cover coupled to the computer mainframe case and closed on the back opening, the side cover having a top flange and a bottom flange perpendicularly backwardly raised from top and bottom sides thereof, and two coupling lugs respectively formed integral with two distal ends of the top flange and respectively coupled to the coupling holes at the computer mainframe case for enabling the side cover to be turned between a close position where the side cover is closed on the back opening of the computer mainframe case with the bottom flange thereof stopped at the bottom wall of the computer mainframe case, and an open position where the side cover is maintained in horizontal and supported on the upright side walls of the computer mainframe, and retaining devices respectively fastened t

Abstract: A combination rack includes a partition frame, and two side frames fastened to the partition frame at two opposite lateral sides, the side frames and the partition frame having respective flat front and rear fenders respectively matched together in a flash manner, and respective bottom coupling plates respectively matched together in a flush manner and fixed together by hook means and screws to hold a computer mainframe and an expansion unit at two opposite sides of the partition frame between the front fenders and the rear fenders, the partition frame having an elongated through hole through which a bus line is inserted and connected between the computer mainframe and the expansion unit for signal transmission.

Abstract: A countersunk hole reinforcing structure, which includes a plate member having a countersunk hole formed of a circular recess and a screw hole at the center of the circular recess for the installation of a screw bolt to fix the plate member to an object below, wherein the plate member has a plurality of reinforcing ribs raised from the circular recess and equiangularly spaced around the screw hole to reinforce the structural strength of the wall body of the circular recess.

Abstract: A detachable housing structure of a computer, including a main base board and a detachable base board. The main base board includes a front section and a rear section. The rear section serves to bear a computer main circuit board, a power supply and other components. The detachable base board is detachably assembled with the front section. The detachable base board has an L-shaped structure, having a front vertical panel serving as the face panel of the computer and a horizontal panel on which the hard disc drive, floppy disc drive and CD ROM device are mounted. When assembling the detachable base board with the main base board, the detachable base board is locked and located by engaging structure and locking mechanism. The detachable base board can be easily drawn out of the main base board for maintenance, replacement and expansion.