Patent ID: 7596830

Claim:
A hinge, comprising: a housing, both ends of the housing communicating with the outside; a stopper, plugging up one end of the housing, defining a through-hole passing therethrough; a sliding cam, slideably received in the housing, defining concave portions on a top surface thereof and an axial hole passing therethrough at center; a rotatable cam, mating with the sliding cam, having a base portion which extends downward to form pushing portions disposed in the concave portions of the sliding cam respectively, the base portion defining a receiving hole at bottom center, a top surface of the base portion protruding upward and defining a stepped portion; a spring, received in the housing, one end of the spring fixed on the sliding cam; a shaft, received in the housing, running through the axial hole of the sliding cam, the spring and the through-hole of the stopper, an end of the shaft fixed with the stopper, and an opposite end of the shaft received in the receiving hole of the rotatable cam; a damper, having a top wall extending downward to form an enclosure that is disposed on the top surface of the base portion of the rotatable cam and hoods the stepped portion, a top surface of the top wall protruding upward to form a preventing block, a bottom surface of the top wall extending downward to form mounting portions, the mounting portions encircled in the enclosure and matching with the stepped portion; and a cap, rotatablely receiving the damper, defining an accommodating space therein for receiving the preventing block of the damper, a part of the accommodating space protruding downward to form a restraining portion for being against the preventing block.