Automatic protective guard for building doors and windows

• Main Author: WU FEIMING
• Format: Patent
• Language: Chinese; English
• Published: 19.11.2019
• Subjects: ALARM SYSTEMS; 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; LADDERS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

The utility model discloses an automatic protective guard for building doors and windows. Side frame, a front frame is arranged in the middle of the front side of the side frame; a protective net is mounted in each front frame; a rotating rod b is installed at the bottom of the left side of the front frame, the rotating rod b is arranged in the middle in a bearing and rotationally connected with the bearing, the bearing is located on the left side of the inner bottom wall of the side frame, a rotating rod a is installed at the top of the left side of the front frame, the rotating rod a penetrates through the top wall of the side frame, and a driven gear is installed at the top of the rotating rod a. The front frame is arranged in the middle of the front side of the side frame; when the clothes are aired or the indoor light transmittance is increased; the motor rotates inwards to drive the driven gear on the left side of the driving gear to rotate, the driven gear drives the rotating rod a and the rotating rod