Patent ID: 7533449

Claim:
A hinge to improve panel stability comprising: a central bracket having a base having a first end; a second end; two sides; an outer surface; an inner surface; and two ribs respectively formed perpendicularly on the two sides of the base toward the inner surface of the base; a first arm formed perpendicularly on the first end of the base toward the inner surface of the base; and a second arm formed perpendicularly on the second end of the base toward the inner surface of the base; a tilt hinge assembly connecting to the first and second arms of the central bracket and comprising a limiting shaft extending through the first arm and having an outer end; an inner end; and a limiting head formed transversely on the inner end of the limiting shaft and having two limiting sides opposite to each other and two flat sides opposite to each other, wherein a distance between the limiting sides is longer than a distance between the flat sides; a connecting bracket mounted securely on the limiting shaft; a fastener mounted securely on the outer end of the limiting shaft; a stationary rod mounted securely in and extending through the second arm of the central bracket and having an outer end; and a limiting bracket mounted rotatably on the outer end of the stationary rod; and a rotating hinge assembly connecting to the base of the central bracket and comprising a rotating rod mounted rotatably and extending through the base of the central bracket and having a bottom end; a top end; and a flange formed radially on the bottom end of the rotating rod, abutting against the ribs on the base of the central bracket adapted to improve panel stability with abutment of the flange with the ribs, corresponding to the limiting head of the limiting shaft and having a flat side alternatively aligning with the limiting side or the flat side of the limiting head of the limiting shaft; an arc side adjacent to the flat side of the rotating rod abutting against the ribs on the base of the central bracket and alternatively aligning with the limiting side or the flat side of the limiting head of the limiting shaft; and a center, wherein a distance between the center and the flat side of the rotating rod is shorter than a distance between the center and the arc side; and a fastening bracket mounted securely on the top end of the rotating rod.