(1)座板; (2)帘板; (3)按钮开关; (4)手动速放装置; (5)导轨; (6)门楣; (7)限位器; (8)链轮; (9)卷门机; (10)控制箱; (11)箱体; (12)卷轴; (13)支座 (14)电机