Patent ID: 8132291
Filing Date: 2012-03-13
Classification: F16C,F16M,Y10T

Abstract:
1. A hinge device comprising: a bearing seat having a containing recess; a spherical joint rotatably disposed in the containing recess, the surface of the spherical joint having a plurality of positioning holes; a plurality of positioning pins disposed at the bearing seat, the positioning pins capable of sliding toward or away from the spherical joint and correspond to parts of the positioning holes respectively when the spherical joint rotates to a specific position relative to the bearing seat; and a retaining ring disposed at an opening of the containing recess of the bearing seat and surrounding the positioning pins, the retaining ring being against the positioning pins to allow the positioning pins to slide toward the spherical joint thus to be fastened in the corresponding positioning holes when the spherical joint rotates to the specific position relative to the bearing seat.