A '''door hinge''' is a mechanism that allows one part to rotate in relation to a fixed part. For a [[door]] the fixed part is the [[wall]] and the movable part is the door. The mechanism may include bearings for heavy doors, and may provide for the door to swing either direction or be self-closing. | A '''door hinge''' is a mechanism that allows one part to rotate in relation to a fixed part. For a [[door]] the fixed part is the [[wall]] and the movable part is the door. The mechanism may include bearings for heavy doors, and may provide for the door to swing either direction or be self-closing. |