Supporting device and method for manufacturing the same

1. A supporting device for bearing a display on a working surface, the supporting device comprising:

a base, being placed on the working surface, the base including:

a substrate, having at least one limiting hole and at least one fastener, wherein the fastener is disposed in the limiting hole and protrudes in a direction away from the working surface;

a covering unit, wrapping the substrate, wherein the covering unit has at least one protruding portion correspondingly wrapping the at least one fastener; and

a rotating unit, being rotatably disposed on one of the substrate and the covering unit, wherein the rotating unit is stationary in contact with the working surface and the substrate and the covering unit are able to rotate with respect to the rotating unit when the supporting device is placed on the working surface; and

an upright, being disposed at the protruding portion to be secured with the base for bearing the display;

wherein when an external force is applied, the substrate and the covering unit operatively rotate with respect to the working surface by the rotating unit along with the upright and the display swiveling on the working surface, and when the external force is removed, the upright and the display are being stationary with respect to the working surface.

2. The supporting device as claimed in claim 1 , wherein the covering unit further comprises an upper shell covering one side of the substrate and a lower shell covering an opposite side of the substrate, and the upper shell and the lower shell are integrally formed.

3. The supporting device as claimed in claim 2 , wherein the substrate further comprises a center hole, and the lower shell has at least one opening.

4. The supporting device as claimed in claim 3 , wherein the rotating unit has a rotating piece and a spacer being disposed on the rotating piece and in contact with the working surface, and the rotating unit is stationary when the substrate and the covering unit rotate with respect to the working surface.

5. The supporting device as claimed in claim 4 , wherein the rotating piece and the spacer have a through hole respectively, and the covering unit further comprises a shaft extending toward the working surface and passing through the center hole of the substrate and the through holes for the rotating unit being disposed on one of the substrate and the covering unit.

6. The supporting device as claimed in claim 5 , wherein the covering unit further has a plurality of pads, which are disposed on the lower shell of the covering unit and in contact with the working surface.

7. The supporting device as claimed in claim 6 , wherein a maximum static friction between the spacer and the working surface is greater than a maximum static friction between the pads and the working surface.

8. The supporting device as claimed in claim 1 , wherein the covering unit is formed by injection molding to embed the substrate therein.