Patent ID: 8418317

Claim:
A hinge comprising: a base including a recessed body, with the recessed body including two sidewalls and a bottom wall; an arm including a pivotal portion connected to a first location of the two sidewalls, with the pivotal portion having a cam portion; a mounting member connected to the arm; a fixing pin member including a first pin and a second pin, with the first pin mounted to the first location of the two sidewalls of the base and pivotably connected to the arm, with the second pin mounted to a second location of the two sidewalls; a hinge spring including a first elastic portion, a second elastic portion, and an intermediate portion interconnected between the first and second elastic portions, with the first elastic portion pressing against the cam portion, with the second elastic portion pressing against the base, with the intermediate portion receiving the second pin of the fixing pin member; and a damping device including: a fixed seat fixedly mounted in the recessed body of the base, with the fixed seat including a receiving space and a stop plate at a rear end of the receiving space; a sliding block movably received in the receiving space of the fixed seat, with the sliding block including a front portion, a rear portion, and two connecting walls and a top wall connected between the front and rear portions, with an elongated through-hole extending through the two connecting walls, with the front portion facing the arm, with the rear portion facing the stop plate of the fixed seat, with the second pin of the fixing pin member extending through the elongated through-hole to restrain movement of the sliding block; a damping member mounted between the bottom wall of the base, the sliding block, and the second pin of the fixing pin member; and an elastic element mounted between the rear portion of the sliding block and the stop plate of the fixed seat, wherein when the base moves relative to the arm to a closed position, the front portion of the sliding block comes in contact with the arm and moves into the fixed seat, such that the damping member is pressed by the second pin of the fixing pin member and the bottom wall of the base to provide primary damping force and that the elastic element is compressed to provide auxiliary damping force and to provide returning force for the sliding block.