Patent ID: 7766297

Claim:
A rotatable mechanism for a display device that includes a display panel and a support stand, the rotatable mechanism being interposed between the display panel and the stand for holding the display panel at a desired angle with respect to the support stand, the rotatable mechanism comprising: a holding seat of generally U-shaped having a left arm, a right arm spaced apart from said left arm and a hollow protection sheath extending from said left arm and cooperating with said right arm to define a reception space therebetween; a spring unit including a limiting stem received in said reception space, a control shaft projecting from said limiting stem toward said left arm parallel to and exposed from said protection sheath, and a torsion spring sleeved around said control shaft for providing a torque; a holding frame of generally U-shaped disposed on said holding seat, and including a base adjacent to said protection sheath, left and right arms overlapping said left and right arms of said holding seat, and a fastener screw for fastening said base securely to said control shaft so as to permit simultaneous rotation of said holding frame together with said control shaft and said limiting stem with respect to said holding seat; a pivot axle extending through in said left and right arms of said holding seat and said holding frame, said limiting stem and said protection sheath to permit relative movement between said holding seat and said holding frame; and wherein, rotation of said holding frame to a predetermined angle with respect to said holding seat results in turning of said limiting stem relative to said holding seat, which, in turn, results in twisting of said torsion spring so as to result in variation of the torque of said torsion spring for turning said holding frame relative to said holding seat.