Auxiliary unit and auxiliary cabinet capable of displacement under a countertop

1. An auxiliary unit comprising:

a self-standing base unit for interfacing with a ground surface, the self-standing base unit having a front edge and comprising a left side wall, a right side wall and a top wall defining, with the ground surface an opening to a three-dimensional space which is substantially closed off on at least four sides, namely a bottom side closed off by the ground surface, a top side closed off by a top wall, a right side closed off by the right wall and a left side closed off by the left wall, the opening being at a front side of the three-dimensional space, the self-standing base unit further comprising a fixed guiding portion installed at least on the top wall and extending from the front edge of the self-standing base unit toward the rear thereof;

an auxiliary cabinet capable of displacement within the three-dimensional space above the ground surface, the auxiliary cabinet comprising:

a base cabinet having a front edge and a rear edge, wherein the distance between the front edge and the rear edge defines a depth of the base cabinet; and

a slidable guiding portion installed on the base cabinet and interfacing with the fixed guiding portion for guiding the base cabinet within the opening during the displacement between an extended position and a retracted position;

wherein when the base cabinet is in the retracted position, it is at its rearmost position, thereby providing a working space having a depth within the opening above the ground surface, the depth of the working space being greater than the depth of the base cabinet, and when the base cabinet is in the extended position, it is at its frontmost position and the base cabinet substantially closes the opening.

2. The auxiliary unit of claim 1 , wherein the slidable guiding portion is on a top wall of the base cabinet for interfacing with a corresponding fixed guiding portion installed about the opening.

3. The auxiliary unit of claim 2 , wherein the slidable guiding portion comprises a first slidable guiding portion and a second slidable guiding portion, distant from the first slidable guiding portion and parallel to the first slidable guiding portion for respectively interfacing with a first fixed guiding portion and a second fixed guiding portion installed about the opening.

4. The auxiliary unit of claim 1 , wherein the base cabinet further comprises a door hinged to at least one of: a top wall, side walls and a bottom wall of the base cabinet.

5. The auxiliary unit of claim 4 , wherein the base cabinet further comprises at least one of: a drawer, a shelf, a hook and a plurality of compartments.

6. The auxiliary unit of claim 1 , wherein a bottom wall of the base cabinet further comprises an interfacing portion for interfacing with the ground surface.

7. The auxiliary unit of claim 6 , wherein at least one of the bottom wall and the interfacing portion further comprises one of: wheels and a roller for facilitating displacement of the base cabinet under the top wall.

8. The auxiliary unit of claim 1 , further comprising a motor and a switch electrically coupled to the motor for electrically controlling and displacing the base cabinet under the top wall during the displacement between the extended position and the retracted position, wherein the motor is installed above the top wall.

9. The auxiliary unit of claim 1 , wherein the slidable guiding portion is on at least one side wall of the base cabinet for interfacing with a corresponding fixed guiding portion installed about the opening.

10. The auxiliary unit of claim 9 , wherein the self-standing base unit comprise a side wall, and the corresponding fixed guiding portion is mounted on the side wall.