Roller blind device

A roller blind device, comprising a special curtain (20), wherein, said roller blind device also comprises a first circular tube (1) for fixing an upper end of said special curtain (20) and a second circular tube (39) for fixing an lower end of said special curtain (20);

• a torsion spiral (37) which is capable of rolling up said special curtain (20) and a stop element (10) for stopping a lifting of said second circular tube (39) are arranged in said second circular tube (39);
• wherein said roller blind device comprises an iron baffle (51), on both ends of which a first connection plate (491) of “Z” shape of a left flexing iron plate (49) and a second connection plate (501) of “Z” shape of a right flexing iron plate (50) are fixed;
• an included angle between said first connection plate (491) and a first bending plate (492) connected together is a right angle, an included angle between said first bending plate (492) and a third connection plate (493) connected together is a right angle, an included angle between said second connection plate (501) and a second bending plate (502) connected together is a right angle, and an included angle between said second bending plate (502) and a fourth connection plate (503) connected together is a right angle;
• said right flexing iron plate (50) is a minor of said left flexing iron plate (49), and two circular iron shafts (36) are fixed symmetrically on said first bending plate (492) and said second bending plate (502).