Patent ID: 7997555

Claim:
A planar rotation mechanism of a supporting device, comprise: a base seat; a supporting rack disposed on the base seat and having at least one supporting arm; a retaining member disposed on a front end of the supporting arm so a height is generated between a bottom end of the retaining member and the base seat; the retaining member having first, second and third guiding slots, the first guiding slot is located at a top portion of a lateral side of the retaining member, the second guiding slot is located diagonally on the retaining member, and the third guiding slot is located between the first guiding slot and the second guiding slot; the first, the second and the third guiding slots are respectively provided with different curvatures and lengths; and a rotating member respectively provided with a column hole with respect to initial positions of the first, the second and the third guiding slots for allowing a first, a second and a third guiding column to respectively pass through the column holes and corresponding guiding slots, so the guiding columns respectively slide within the corresponding guiding slots, and the rotating member is provided in front of the retaining member; so when the rotating member is operated with a planar rotation with an object to be supported provided in front of the rotating member, the guiding columns slide within the corresponding guiding slots, a corner of one lateral side of the object to be supported is firstly moved a small distance alongside a bottom end of the object to be supported, then is rotated, so a horizontal status of the object to be supported is switched to a vertical status or vice versa.