PURPOSE: To provide a hinged door to have neat appearance by a method wherein an arm is rotatably mounted on a moving wing axle, and protrusion of a moving wing is suppressed in a way that, in a natural state, the moving wing is inclined in the direction of a free end on the back of one hinged door.

CONSTITUTION: A moving wing 4 is mounted on the back of the free end of a hinged door 3 along a free end and a fixed body 7a on the door side of a hinge 7 is fixed by means of a screw. When the hinged door 3 is closed, the rear end of the moving wing 4 is caused to approach a magnet catch, arranged to the top plate and the floor plate of a body, through a moving wing guide 6. Further the moving wing 4 enters the back of the other hinged door 2 by means of a moving wing guide 6 as an arm 7b is inclined around an axis. When the hinged door 3 is closed, a gap between the adjoining free end of the two hinged doors 2 and 3 is closed with the moving wing 4. Consecutively, when the hinged door 3 is opened, the moving wing 4 is restored to a natural state by means of the rotation force around an axis, serving as a motive force, of a spring 9 by reversing the above. Opening and closing of the other hinged door 2 are performed regardless of the moving wing 4.