Patent ID: 7634838
Filing Date: 2009-12-22
Classification: E05D,E05Y,H04M,Y10T

Abstract:
1. A hinge, comprising: a shaft comprising a first end and an opposite second end, two opposite shaft rotating blocks radially projecting from the first end; a cam comprising a first cam end including a first end surface and two opposite cam blocks axially projecting form the first end surface and being symmetric about a center of the first end surface, an opposite second cam end, an intermediate portion connecting both with the first and second cam end, and an axial through hole defined through the cam; the cam surrounding the first end of the shaft with the shaft rotating blocks abutting against the first cam end surface and being rotatable relative to the cam between the cam blocks; a sleeve surrounding the shaft, and comprising a first end surrounding and engaged with the second cam end of the cam such that the sleeve is axially slidable relative to and rotatable jointly with the cam, and a second end abutting the second end of the shaft; a torsion spring having a first finger coupled to the shaft, and a second finger coupled to the sleeve, the torsion spring surrounding the second end of the shaft and being received in the sleeve; and an elastic member surrounding the intermediate portion of the cam and elastically interposed between the first end of the cam and the first end of the sleeve.