Patent ID: 6802107
Filing Date: 2004-10-12
Classification: E05D,E05Y,Y10T

Abstract:
A self-locking hinge apparatus with a single stable state for providing a hinge rotational movement and automatic stabilizing at the single stable state, comprising:a pivotal shaft, further having a retaining end and a free end; a retaining ring, slidably and pivotally mounted on the pivotal shaft at the retaining end; a stator mounted on the pivotal shaft in a slide-able but not rotatable manner; a compression spring mounting on the pivotal shaft between the retaining ring and the stator; and a rotor, slidably and pivotally mounted on the pivotal shaft adjacent to the free end and pressing the stator; wherein the rotor has a sliding surface facing the stator that forms a strictly concave surface surrounding the pivotal shaft, the sliding surface having a lowest point, the stator having a bulged point extending to and pressing upon the sliding surface such that when the stator and the rotor are initiated at a position, the compression spring pushes the bulged point of the stator in the axial direction of the pivotal shaft on the sliding surface of the rotor to make the sliding surface automatically sliding on the bulged point and to drive the rotor rotating about the pivotal shaft and to stop the sliding and the rotating until the bulged point reaches the lowest point of the sliding surface.