US Patent 7184261 Computer case

A computer case includes a chassis (10), a cover (60) and a lock (80). The chassis comprises a bottom panel (12), two side panels (14) and a front panel (16), the bottom panel engaging two first support members (40) and a second support member (52) between the first ones. Each of the side panels defines a fixing slot (19). The cover defines two fixing apertures (63) in respective opposite sides. The lock comprises an operating member (90) getting through the front panel, and two locking bars (100). Each of the locking bars is supported between the first and the second support members. The locking bars are connected by a spring (110). In assembly, each of the apertures aligns with the fixing slot, and the pushing part pushes the locking bars successively getting through the aperture and slot, thereby mounting the cover to the chassis.