| 摘要 |
The present invention relates to a silver safety door having functions for preventing a theft and the inflow of a draft. The theft is easily committed by unlocking (breaking) the doorknob locking device (including auxiliary locking device-a kind of a bracket for a door lock) of an existing door with a lever action using a simple jig and tool, wherein the doorknob locking device has a low bearing capacity (narrow section to be locked). Therefore, the present invention allows unlocking pieces to be drawn out of the housing grooves of a door frame, thereby largely improving the function for preventing the theft by fundamentally blocking the opening or the closing of the silver safety door even if the doorknob of the silver safety door is broken, wherein the unlocking pieces formed at the top and the bottom of a door panel in the width direction of the door panel locks and unlocks the silver safety door. The present invention allows the unlocking pieces widely expanded in the width direction to be inserted into the housing grooves and be maintained to be closed, thereby completely blocking the inflow of the draft. The present invention also allows a user to use the silver safety door while the threshold of the door frame is removed by the plate-shaped unlocking pieces which move up and down against the top and the bottom of the door frame in order to lock and unlock the silver safety door, thereby allowing a wheelchair used by the old and weak, and the disabled to easily enter or exit, and preventing the injury of a user using the wheelchair by preventing the wheelchair passing through the door frame from falling down. |
