A displaceable hinge unit is provided. The displaceable hinge unit includes: an outer frame having an insertion groove formed on a longitudinal center portion of a first lateral surface thereof; a shaft rotatably disposed in the outer frame by passing through the insertion groove of the outer frame, and having a screw thread formed on an outer circumferential surface thereof located in the insertion groove; and an inner frame having a screw thread that is formed on an inner circumferential surface thereof and is engaged with the screw thread of the shaft, and configured to form translational motion in the insertion groove by means of rotation of the shaft.

A displaceable hinge unit is provided. The displaceable hinge unit includes: an outer frame having an insertion groove formed on a longitudinal center portion of a first lateral surface thereof; a shaft rotatably disposed in the outer frame by passing through the insertion groove of the outer frame, and having a screw thread formed on an outer circumferential surface thereof located in the insertion groove; and an inner frame having a screw thread that is formed on an inner circumferential surface thereof and is engaged with the screw thread of the shaft, and configured to form translational motion in the insertion groove by means of rotation of the shaft.

A panel-and-frame assembly includes panel pivotally connected to an integrated frame. The panel includes a leaf extending on an external side and an axle extending on and along an edge of the leaf The leaf is made with a width smaller than a diameter of the axle. The integrated frame includes a channel extending in an internal side of the integrated frame and including a slit in communication with a recess. The recess receives the axle. The slit is made with a width smaller than the diameter of the axle to keep the axle in the recess. The width of the slit is larger than thickness of the leaf to allow pivoting of the panel relative to the integrated frame between an opening position and a closing position.

A spring-loaded hinge assembly including a hinge support bracket and a leaf that is pivotally mounted to the hinge support bracket. A coil spring is supported on a spring support member, which includes a pivot bush. The coil spring applies a biasing force to the spring support member, which operates to push the pivot bush against a cam on the leaf. A lock configured to rotate between locked and unlocked positions includes a finger that engages an engagement feature on the hinge support bracket when the lock rotates to the locked position as the leaf swings toward the open position. In the locked position, the lock holds the coil spring in a partially compressed, pre-load condition and the pivot bush at a partially retracted position relative to the cam until the lock is subsequently released by contact between the cam and the pivot bush during subsequent closure.

A spring-loaded hinge assembly including a hinge support bracket and a leaf that is pivotally mounted to the hinge support bracket. A coil spring is supported on a spring support member, which includes a pivot bush. The coil spring applies a biasing force to the spring support member, which operates to push the pivot bush against a cam on the leaf. A lock configured to rotate between locked and unlocked positions includes a finger that engages an engagement feature on the hinge support bracket when the lock rotates to the locked position as the leaf swings toward the open position. In the locked position, the lock holds the coil spring in a partially compressed, pre-load condition and the pivot bush at a partially retracted position relative to the cam until the lock is subsequently released by contact between the cam and the pivot bush during subsequent closure.

Hinge for moving a door with respect to a stationary wall characterized in that it is composed of two opposing wings provided with through fixing holes and provided with a mutual engagement area, the mutual engagement area including shaped and complementary bushings protruding from one of the walls of each of the wings, the bushings housing, respectively a matching and friction system composed of a wedge-shaped matching element and a bushing-shaped matching element opposed to each other, kept in mutual connection by a screw-nut system.