Roller device of roller shutter door

• Main Authors: LIU ZHANLI, WANG XIJUN, YIN JIANBIN, XIA CHUNLEI, CHEN ZHIXIONG
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2019
• Subjects: 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

The utility model provides a roller shutter door winding drum device which comprises a left shaft head (10), a right shaft head (20), a left flange (30) and a right flange (40). The left bearing (20)is fixed on the left flange (30), and a boss is designed at the right end of the left flange (30); the fastener (50) penetrates through the spacer bush (40) and the left end part of the torsional spring (70) and is fixed on the left flange (30); the left end of the outer winding drum (60) is fixed with the left flange (30), and the right end is fixed with the right flange (110); the left end of the mandrel (80) is connected with the left shaft head (10), the right end of the mandrel (80) is connected with the right shaft head (100), the right shaft head (100) can slide in the mandrel (80), theright end of the torsional spring (70) is fixed to the mandrel (80) through the connecting piece (90), and the right bearing (120) is fixed to the right flange (110). According to the technical scheme, the problems that in th