There is an anti-theft door hinge means is such that including the hinge, the hinge, characterized in that: the upper and lower hinges are mounted above and beneath the positive gate, and hidden structure, between the hinge axis and the hinge block for threaded connection, is fixed by a locking screw, between the hinge axis and the axis of the cap has a high wear resistance of copper. 

 

     This security hinges concealed hinges utility model with a high wear copper, flexible rotation can be freely open and close any angle; special threaded connection design, doors and door frames can be adjusted freely gap size, easy solution to a common hinge under Shen problems.