Device for blocking interior opening of main door to prevent from e.g. burglary, has metal square structure mounted with swiveling unit to fixed wall or to extension assembly, by side of structure whose another side is in vicinity of door

摘要

The device has a swiveling right angled metal square structure mounted, by one of its perpendicular sides, with a swiveling unit i.e. hinge (2) to a fixed wall or to an extension assembly resting to the wall. Another side of the structure is in vicinity of a door in a deployed position on ground. The structure forms a right angle between an opening of the door and the wall, or among the opening, the assembly and the wall. The structure folds up by itself along the wall, and presents a thickness lower than that of an upright of a frame near the opening when the structure is in folded up mode.