Patent ID: 9194165
Filing Date: 2015-11-24
Classification: E05D,F16C,Y10T

Abstract:
1. A ball hinge structure, comprising: a ball hinge rotatably installed inside a hinge housing; and a first hinge resistor and a second hinge resistor elastically supported with respect to each other by a second spring, wherein the second hinge resistor is in contact with a circumference of the ball hinge, the first hinge resistor is elastically supported by a first spring provided on a top surface of a hinge housing cap coupled to a lower portion of the hinge housing, the ball hinge includes a groove, and when the ball hinge is maintained in a normal position thereof, the first hinge resistor is faced with the groove having a smaller circumference than a circumference having a radius of the ball hinge to apply a weak compression force to the first spring elastically supporting the first hinge resistor, and when the ball hinge is tilted, the circumference of the ball hinge having the radius pushes the first hinge resistor according to a tilted angle thereof, thereby applying a strong compression force to the first spring, and a compression force opposite to the compression force of the first hinge resistor is applied to the second hinge resistor, so a fixing force of the ball hinge changes according to the position of the ball hinge.