Assembly for securing plates

1. An assembly comprising:

a first plate having two pairs of resiliently deformable protruding portions, each of the protruding portions having a first guiding surface and a second guiding surface intersecting with the first guiding surface, a distance between junctions of the first and second guiding surfaces of each pair of protruding portions being less than that between other portions thereof; and

a shield having a pair of tongue pieces respectively corresponding to the two pairs of protruding portions of the first plate, each of the tongue pieces sliding on and pressing the first guiding surfaces of the corresponding pair of protruding portions to resiliently deform and expand the corresponding pair of protruding portions outwardly, and being clamped between the corresponding pair of protruding portions after each of the tongue pieces slides across the junctions of the corresponding pair of protruding portions to position between the second guiding surfaces thereof.

2. The assembly as recited in claim 1 , wherein each of the protruding portions is V-shaped, and the second guiding surface of each protruding portion is positioned between the first guiding surface thereof and the first plate.

3. The assembly as recited in claim 1 , wherein the tongue pieces are T-shaped.

4. The assembly as recited in claim 1 , wherein the first plate defines a plurality of slots, and the shield forms a plurality of protruding tabs for engagingly inserting in the corresponding slots.

5. The assembly as recited in claim 1 , wherein the first plate defines an opening, an edge of a second plate is bent to form the shield for covering the opening.

6. The assembly as recited in claim 5 , wherein the two pairs of protruding portions are formed at two opposite sides of the opening respectively.

7. The assembly as recited in claim 1 , wherein the pair of tongue pieces extends horizontally from the corresponding end of the two opposite ends of the shield.

8. The assembly as recited in claim 1 , wherein the shield defines a plurality of heat dissipating holes.

9. An assembly, comprising:

a first piece defining an opening in a surface thereof, two pairs of protruding portions extending from the surface adjacent to opposite edges of the opening; and

a second piece attachable to the first piece to cover the opening, two first flanges bent perpendicularly from opposite edges of the second piece, a tongue piece perpendicularly bent from each of the first flanges and parallel to the surface of the second piece, the tongue pieces being clamped between the corresponding pairs of protruding portions, thereby preventing the second piece removing from the first piece, wherein each of the protruding portions has a first guiding surface and a second guiding surface intersecting with the first guiding surface for the tongue piece sliding thereon.

10. The assembly as recited in claim 9 , wherein each of the protruding portions is arcuate.

11. The assembly as recited in claim 9 , wherein the tongue pieces are T-shaped.

12. The assembly as recited in claim 9 , wherein the first piece defines a plurality of slots, and the second piece forms a plurality of protruding tabs for engagingly inserting in the corresponding slots.

13. An electronic device comprising:

an enclosure of said electronic device comprising a plurality of first mechanically connectable pieces;

a mechanically connectable second piece separately attachable to at least one of said plurality of first pieces so as to complete extension of said enclosure; and

a mechanism for securing said second piece to said at least one of said plurality of first pieces, said mechanism comprising a first part formed on one of said second piece and said at least one of said plurality of first pieces, and a second part formed on the other of said second piece and said at least one of said plurality of first pieces, said second part being slidable on said first part between a first position in which said second part presses said first part to resiliently deform and a second position in which said first part rebounds to an original state so as to engage with said second part and thereby restraining movement of said second piece relative to said at least one of said plurality of first pieces exclusively along a normal direction and a parallel direction to said at least one of said plurality of first pieces.

14. The electronic device as recited in claim 13 , wherein said first part comprises a pair of resiliently deformable protruding portions extending normally from said at least one of said plurality of first pieces, and said second part is a tongue piece extending out of said second piece.

15. The electronic device as recited in claim 14 , wherein each of said protruding portions is generally V-shaped and comprises a first guiding surface and a second guiding surface intersecting with said first guiding surface, and a distance between junctions of said first and second guiding surfaces is less than that between other portions thereof.

16. The electronic device as recited in claim 15 , wherein said tongue piece is positioned between said first guiding surfaces of said guiding portions and blocked by said junctions thereof when said tongue piece is in said first position, and positioned between said second guiding surfaces thereof after said tongue piece is exerted to press said guiding surfaces to expand said guiding portions outwardly so as to slide across said junctions.