Connection device for construction passage security protection door and security protection door thereof

• Main Authors: PAN ZHIHAO, SHEN JUN, LAI ZHENYE
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2009
• Subjects: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; KEYS; LADDERS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

The utility model relates to a safe protective door and a connecting device for the safe protective door of a construction passage, which comprises a fixed fastener, a movable fastener and a fixed shaft, wherein the fixed fastener is provided with a first notch and a fixedly connecting end parallel to the first notch so that the fixed fastener is fixedly connected with the protective door through the fixedly connecting end, and the movable fastener is provided with a second notch; one end of the fixed shaft is connected with the movable fastener so that the movable fastener is connected with the protective door through the other end, and the movable fastener can rotate around the fixed shaft. When the fixed fastener and the movable fastener are both connected with the protective door, the movable fastener rotates around the fixed shaft to realize the cross of the second notch and the first notch so as to joint the movable fastener and the fixed fastener. When the device is mounted on the protective door of a