Patent ID: 7578030
Filing Date: 2009-08-25
Classification: E05F,E05Y,H04M,Y10T

Abstract:
1. A hinge mechanism comprising: a shaft; a cam follower fixed relative to the shaft, the cam follower having a cam follower surface; a cam having a cam surface facing the cam follower surface and a cam hole defined therein, the cam being rotatable relative to the cam follower, the cam defining a slot at an opposite end to the cam surface; an antifriction member being ring-shaped and having two ends, the antifriction member being mounted in the slot of the cam; an elastic member; and a washer; wherein the shaft runs through the cam, the washer and the elastic member, in turn, the antifriction member has one end touching the cam and an opposite end touching the washer, the cam surface abuts against the cam follower surface due to the elastic force of the elastic member.