Keyboard with screw nut

1. A keyboard comprising:

a support plate;

a keyboard module comprising a plurality of keys on a first side of the support plate;

a screw nut including a plate portion and a main body with a threaded aperture;

wherein the plate portion of the screw nut is attached to a second side of the support plate by heat bonding; and

a keyboard frame fitting around the keyboard module and having a plurality of projections which extend through holes in the support plate, the plate portion of the screw nut being attached to a projection of the keyboard frame.

2. The keyboard of claim 1 , wherein the plate portion of the screw nut is heat bonded to the projection of the keyboard frame.

3. The keyboard of claim 1 wherein the keyboard frame is a lattice which fits in gaps between individual keys of the keyboard module.

4. The keyboard of claim 1 wherein the plate portion of the screw nut is heat bonded to a group of projections of the keyboard frame.

5. The keyboard of claim 1 , further comprising:

a plurality of screw nuts, each of the plurality of screw nuts having a plate portion and a main body with a threaded aperture, wherein each of the plurality of screw nuts is attached to a respective group of projections of the keyboard frame by heat bonding of the plate portion to the respective group of projections.

6. The keyboard of claim 5 , wherein there are a larger number of the plurality of projections than the number of the plurality of screw nuts.

7. The keyboard of claim 1 , wherein the keyboard frame is plastic and the projections are heat stake pins.

8. A portable electronic device having a keyboard according to claim 1 and a main body; the keyboard being attached to the main body by a screw and the screw nut; the screw being received in the threaded aperture of the screw nut.

9. A keyboard comprising:

a keyboard module comprising a plurality of keys;

a support plate attached to the keyboard module; and

a plurality of bosses extending from the support plate, wherein at least one of said bosses has a screw nut attached thereto and at least one of said bosses does not have a screw nut attached thereto, and wherein the plurality of bosses are formed by heat stake pins projecting from a keyboard frame which fits over the keyboard module, the heat stake pins extending through holes in the support plate.

10. The keyboard of claim 9 wherein said plurality of bosses comprise at least a first group of bosses to which a screw nut plate is attached and a second group of bosses to which a screw nut plate is not attached.

11. The keyboard of claim 9 wherein the screw nut is attached to a boss by heat bonding.

12. The keyboard of claim 9 , wherein the plurality of bosses are formed of plastic and the screw nut is formed of metal.

13. The keyboard of claim 9 wherein a light guide is disposed between the support plate and the keyboard module.

14. A method of assembling a keyboard comprising:

providing a keyboard module attached to a support plate;

providing multiple groups of bosses projecting from the support plate by placing a keyboard lattice over the keyboard module and causing projections of the keyboard lattice to extend through holes in the support plate to form multiple groups of bosses;

selecting a group of bosses from the multiple groups of bosses; and

attaching a screw nut to the selected group of bosses.

15. The method of claim 14 wherein each group of bosses comprises a plurality of bosses.

16. The method of claim 14 , wherein at least one of the groups of bosses is not attached to a screw nut.

17. The method of claim 14 , wherein attaching the screw nut further comprises attaching the screw nut to the selected group of bosses by heat bonding.

18. The method of claim 14 comprising using a screw to attach the screw nut to a portable electronic device.