Patent ID: 8141205
Filing Date: 2012-03-27
Classification: G06F,H04M,Y10T

Abstract:
1. A hinge mechanism comprising: a follower; a cam; and a first spring, the first spring being spiral, one end of the first spring mounted to the follower, another end of the first spring mounted to the cam so the follower is retained to the cam by the first spring; a can, the can including an open end, a partially closed end and a peripheral wall connecting the open end and the partially closed end, the open end, the partially closed end and the peripheral wall corporately enclosing a space, the follower, the first spring, and the cam accommodated in the space; a main shaft, the main shaft passing through the cam and the follower; wherein when the cam rotates relative to the follower about the main shaft, the first spring is compressed to accumulate elastic force, until the line connecting two ends of the first spring is parallel to the rotating axis where the first spring is mostly compressed to accumulate the maximum elastic force and the hinge mechanism is in an intermediate state; once the cam is rotated past the intermediate state, the first spring expands under the accumulated elastic force, driving the cam to continue rotating relative to the follower.