Patent ID: 9244497
Filing Date: 2016-01-26
CPC Classification: E05Y,G06F,Y10T

Claim Text:
1. A hinge module adapted to be disposed between a first body and a second body to facilitate in rotating the second body relative to the first body, and the hinge module comprises: a shaft; a first bracket fixed on the first body and fixedly supporting the shaft; a second bracket fixed on the second body and rotatably passed through by the shaft, for rotating the second bracket relative to the first bracket; an electromagnet directly or indirectly installed on the shaft; and a magnetic element directly or indirectly installed on the shaft, and attracted to or repelled by the electromagnet under the magnetic force of the electromagnet; wherein at least one of the electromagnet and the magnetic element is movable axially along the shaft but not rotatable with the shaft as an axis, and in response to the force of the electromagnet being activated by electric power, at least one of the electromagnet and the magnetic element is moved axially to a first position and presses the second bracket to increase a rotational friction, and thereby a torsion required for a rotation of the second bracket relative to the first bracket is increased, wherein the second bracket has a bearing to be passed through by the shaft, the bearing includes a first lateral side and a second lateral side opposite to each other, the electromagnet is installed adjacent to the first lateral side and incapable of being moved axially, the magnetic element is installed on the shaft adjacent to the second lateral side and capable of being moved axially, and the electromagnet generates a magnetic attraction force to attract the magnetic element so as to move the magnetic element to the first position to press the second lateral side of the bearing.