Abstract: A sliding case mounting device including two sliding case mounting rails fixed to two opposite long sides of a rectangular sliding case, permitting it to be installed in two rows of circular track elements inside a mainframe, each sliding case mounting rail having two horizontal projecting plug rods perpendicularly disposed at two opposite ends at an outer side and respectively plugged into respective mounting holes in the sliding case, two inward bends symmetrically disposed at an inner side in a parallel relation, which provide a respective smoothly curved edge that does not hurt when touched, a mouth at one end, which guides one row of circular track elements into engagement with the respective rail, two outward hooks perpendicularly disposed at two opposite ends at an outer side and hooked in respective mounting holes at the bottom side of the sliding case, a front extension strip, an inward hook raised from the front extension strip at an inner side and hooked in a respective retaining hole inside the ma

Abstract: A sliding case mounting device including two sliding case mounting rails fixed to two opposite long sides of a rectangular sliding case for permitting it to be installed in two tracks inside a mainframe, each sliding case mounting rail having two horizontal projecting plug rods perpendicularly disposed at two opposite ends at an outer side and respectively plugged into respective mounting holes on one lateral side of the sliding case, a circularly arched tip at one end for insertion into one track of the mainframe, two outward hooks perpendicularly disposed at two opposite ends at an outer side and hooked in respective mounting holes at the bottom side of the sliding case, a front extension strip, an inward hook raised from the front extension strip at an inner side for hooking in a respective retaining hole inside the mainframe, and a press portion at one end of the front extension strip for pressing by hand to release the inward hook from the respective retaining hole on the mainframe for permitting the sli

Abstract: A computer mainframe housing including a rectangular metal base frame, a front panel and two rectangular cover panels and at least one square cover panels respectively covered on the base frame, wherein each of two opposite rectangular sides of the base frame has two rows of lugs longitudinally and bilaterally disposed along the border, a retaining hole near one end, rows of hooks longitudinally disposed between the rows of lugs, and one row of sliding slots longitudinally disposed between one row of lugs and the rows of hooks; each rectangular cover panel has a front flange forced into engagement with the front panel, longitudinally grooved reinforcing ribs at an inner side, a plurality of crossed tenons respectively disposed in the longitudinally grooved reinforcing ribs and forced into the sliding slots of one rectangular side of the base frame, a rear finger strip, a hook raised from the rear finger strip and forced into engagement with one retaining hole of the base frame; each square cover panel has two