| 摘要 |
A safety braking device for a roll up or sliding door (10) having a door curtain (11) guided for movement by guide channels (14) engaging its edges, the safety braking device comprising a tilt bar (18) hingedly attached to the leading edge of the door curtain (11), and brake means (32) carried on the tilt bar (18) and arranged, upon appreciable tilting movement of the tilt bar (18), to frictionally engage with the door curtain guide channels (14) for braking the movement of the door. |
