BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a perspective view of parts of the present invention.
FIG. 2 shows a perspective view of a push-in device of the present invention.
FIG. 3 shows an exploded view of parts of a push-in device of the present invention.
FIG. 4 shows a schematic view of a motion of push-in device in an open state of the present invention.
FIG. 5 shows another schematic view of a motion of push-in device in an open state of the present invention.
FIG. 6 shows a cross sectional view of a push-in device in a closed state of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 1 to 3, the present invention is to provide a liftable cover for a computer casing, including a computer casing 10, above which is provided with a fixed upper plate 12 having at least more than one positioning through-hole 14 on a surface thereof; a cover 30, a surface of which is opened with a rectangular hole 32; and a push-in device 40. The push-in device 40 is composed of a rectangular container 42, which is locked and positioned into the rectangular hole 32, and an interior of which is provided with a sink 421 which is transversally transfixed with a front pin 42 and a rear pin 423; a front push plate 43, a rim at a lower rear side of which is extended with a projection part 433, and two sides at a front lower side of which are provided with ear parts 431 respectively, with sides at lower ends of the ear parts 431 being provided with push-in ends 4312, and with through-holes 432 on the ear parts 431 being loosely transfixed with the front pin 422; a front elastic member 44, which is provided with pivot holes 443 to be transfixed with the front pin 422, and fixing ends 441 of which are fixed on wall surfaces of the sink 421, such that the front push plate 43 is provided with elasticity; a rear push plate 45, two sides of which are provided with ear parts 451 respectively, and a lower rim in front of which is provided with a locking end 452 which can lock and position the projection part 433, wherein the ear parts 451 are provided with through-holes 455 which can be transfixed with the rear pin 423; and a rear elastic member 46, which is provided with a pivot hole 463 to be transfixed with the rear pin 423, and a fixing end 461 of which can be locked onto a wall of sink 421.
Referring to FIG. 3, walls of the sink 421 of rectangular container 42 are provided with at least more than one locking hole 4214, respectively; whereas the fixing ends 441 of front elastic member 44 are transfixed into the locking holes 4214.
Positioning holes 4215 are located on wall surfaces of the sink 421 to provide for a locking and positioning of the fixing ends 461.
Referring to FIG. 3, a rear side of the front elastic member 44 is provided with a transversal strip 442 which is locked onto an inner wall 434 at a front end of the front push plate 43 (as shown in FIG. 4). In addition, a rear transversal strip 462 of the rear elastic member 46 is abutted on an inner wall 453 of the rear push plate 45.
Referring to FIG. 3, any wall of the rectangular container 42 is provided with a flexible projection part 425 which can be abutted on an inner wall 321 at a lower rim of the rectangular hole 32 (as shown in FIG. 6).
Referring to FIG. 1, a push-in device 40 is latched into a rectangular hole 32 by a rectangular container 42, such that the push-in device 40 can be assembled with a cover 30 to form an integral body. As shown in FIG. 6, a projection part 425 is abutted on an inner wall 321 at a rim of the rectangular hole 32, such that the container 42 of push-in device 40 can be effectively locked and positioned into the rectangular hole 32. A front and a rear elastic member 44, 46 are in a compression state, and a locking end 452 is locking at a projection part 433, such that a front push plate 43 is in a horizontal shape without being raised upward. An ear part 431 is exposed out of a lower side exterior to a sink 421 to move there, and can be projected downward into a through-hole 14, which is provided with a rear hole-wall 142, of an upper plate 12. Referring to FIG. 4, an operator uses fingers to press on a rear push plate 45 which is displaced by a rotation angle using a rear pin 423 as an axis of rotation, such that the rear elastic member 46 can be more tightly formed into a compression state. Therefore, the locking end 452 is raised up by an angle, and is removed from the projection part 433, such that a locking effect of the front push plate 43 from an elastic force disappears, the front elastic member 44 which is originally in the compression state is elastically restored, and the front push plate 43 is reversely rotated by an angle, using a front pin 422 as an axis of rotation. Referring to FIG. 4, a rear push-in end 4312 is abutted on the rear hole-wall 142 to form a pivot of force. When an operator uses fingers to exert an outward pushing force to a left of the front push plate 43 and the cover 30, the rear hole-wall 142 and the rear push-in end 4312 are abutted to form a pivot of force, such that a rear end rim 33 of the cover 30 can be removed from a locking surface 13 of a casing 10. Referring to FIG. 5, the cover 30 can be held by a hand to be successfully taken out of the casing 10 by a tilted angle, to facilitate the operator to perform an operation of assembling and dismantling parts in an interior of the casing 10.
Accordingly, in the present invention, by a design and function of the push-in device 40 between the cover 30 and the casing 10, the cover 30 can be quickly removed out of the casing 10.
It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.
Patent Application
20080036218
