Abstract: A door hinge comprises a first hinge element fastenable to a door frame and a second hinge element fastenable to a door leaf and includes first and second hinge blade. A first pivot axis is connected, when the door hinge is in a first operating condition, to first and second hinge elements such that the second hinge blade is pivotable relative to the first hinge element, in a first pivot direction, for unblocking a door aperture. The first pivot axis is decoupled from the first or the second hinge element when the door hinge is in a second operating condition. A second pivot axis is connected to the first and second hinge elements such that said first and second hinge elements are pivotable relative to one another, in a second pivot direction which is opposed to the first pivot direction, for unblocking the door aperture.

Abstract: A door hinge (10) according to the invention comprises a first hinge element (12) which is fastenable to a door frame (24) and a second hinge element (14) which is fastenable to a door leaf (28) and has a first hinge blade (20) and a second hinge blade (22). A first pivot axis (32) is connected, when the door hinge (10) is in a first operating condition, to the first and second hinge elements (12, 14) in such a way that the second hinge blade (22) of the second hinge element (14) is pivotable, when the door hinge (10) is in said first operating condition, about said first pivot axis (32), relative to the first hinge element (12), in a first pivot direction (Px), for the purpose of unblocking a door aperture which is bounded by the door frame (24). The first pivot axis (32) is decoupled from the first or the second hinge element (12, 14) when the door hinge (10) is in a second operating condition.