| 摘要 |
Over-center hinge for cabinet doors, having two hinge links pivotingly joined, in the manner of a quadruple knuckle joint, at one end to a door-related hinge member and at the other end to a wall-related hinge member in the form of an elongated supporting arm, which, in the swing from the closed to the open position, can be moved through a dead center position on one side of which it is biased by the tension of a torsion coil spring toward the closed position and on the other side of which it is biased by the tension of the torsion coil spring toward the open position. The first leg of the torsion coil spring, disposed in the front terminal portion of the door end of the supporting arm, engages a prolongation on the supporting arm end of one of the hinge links, which forms with the pintle at the supporting arm end of this link a lever arm which is directed away from the pintle such that, when the hinge is in the closed position, it is biased for swinging in the closing direction and, when the hinge is in the open position, it is biased for swinging in the opening direction. The prolongation is provided on the outer hinge link farther from the supporting wall, and the torsion coil spring is disposed between the pivot axes on the supporting arm ends of the hinge links, the second spring leg not in engagement with the prolongation of the outer hinge link being supported directly or indirectly by the supporting arm. |
