Keyboard mounting assembly

1. A keyboard mounting assembly comprising:

a base having a base upper surface, a base lower surface and a downwardly-extending base skirt adjacent at least one side of the base upper surface, the base skirt having a recessed portion extending inwardly from a peripheral edge of the base upper surface, wherein the base includes at least one aperture extending between the base upper surface and the base lower surface for mounting the base to a support arrangement;

a keyboard tray having a support portion configured to support a keyboard, the support portion having a tray upper surface and a tray lower surface with at least one aperture extending between the tray upper surface and the tray lower surface for mounting the keyboard to the keyboard tray, and a downwardly-extending tray skirt adjacent at least one peripheral edge of the tray upper surface, the keyboard tray at least partially defining a keyboard tray cavity configured for removable nesting of the base therein, wherein the tray skirt extends below the base lower surface when the base is removably nested in the keyboard tray cavity and the tray skirt has a projection extending inwardly from an interior surface of the tray skirt, the projection being configured for receipt within the recessed portion of the base skirt when the base is removably nested within the keyboard tray cavity; and

an interlock mechanism between the base and the keyboard tray, the interlock mechanism operable to releasably lock the base within the keyboard tray cavity, wherein when the base is locked within the keyboard tray cavity, the base is configured to prevent the keyboard from being removed from the tray upper surface.

2. The keyboard mounting assembly of claim 1 , wherein the projection abuts the base lower surface to prevent removal of the base from within the keyboard tray cavity when the interlock mechanism releasably locks the base within the keyboard tray cavity.

3. The keyboard mounting assembly of claim 1 , wherein the projection defines a pivot axis and the keyboard tray is configured to pivot about the pivot axis relative to the base to nest and secure the base within the keyboard tray cavity, and to remove the base from within the keyboard tray cavity.

4. The keyboard mounting assembly of claim 1 , wherein the projection has a length corresponding to a length of the recessed portion of the base skirt such that an engagement between the projection and the recessed portion of the base skirt aligns the base relative to the keyboard tray for nesting the base within the keyboard tray cavity.

5. The keyboard mounting assembly of claim 1 , wherein the base skirt extends from at least three sides of the base upper surface and the tray skirt extends from at least three corresponding sides of the tray upper surface, such that when the base is nested within the keyboard tray cavity, the at least three sides of the tray skirt at least partially overlap the at least three corresponding sides of the base skirt.

6. The keyboard mounting assembly of claim 5 , wherein the base skirt further extends from a fourth side of the base upper surface, and wherein the keyboard tray further includes a feature that engages the fourth side of the base skirt when the base is nested within the keyboard tray cavity.

7. The keyboard mounting assembly of claim 6 , wherein the feature is one or more ribs formed on an underside of the keyboard tray.

8. The keyboard mounting assembly of claim 1 , wherein the interlock mechanism includes a lock supported by the keyboard tray adjacent the support portion, and wherein the base includes a flange configured to engage and be retained by a pawl of the lock when the base is nested within the keyboard tray cavity defined by the keyboard tray.

9. The keyboard mounting assembly of claim 1 , wherein the keyboard tray includes ribs formed on an underside of the tray upper surface, the ribs sized to engage the base upper surface when the base is nested within the keyboard tray cavity.

10. The keyboard mounting assembly of claim 1 , wherein the base defines a base perimeter footprint, as viewed in a direction perpendicular to the base upper surface, and the keyboard tray defines a tray perimeter footprint, as viewed in a direction perpendicular to the tray upper surface, and wherein when the base is nested within the keyboard tray cavity, the base perimeter footprint is completely contained within the tray perimeter footprint.

11. The keyboard mounting assembly of claim 1 , wherein when the base is locked within the keyboard tray cavity, the base upper surface is spaced apart from the tray lower surface.