| 摘要 |
The invention relates to a quick door for blocking a bay in a partition, that comprises: a structure essentially comprising two vertical mounts (3) in each of which is formed a slide (5) and an upper horizontal member defining a lintel, including a shaft (8) driven in rotation by electromechanical means, a flexible screen (10) connected to the shaft (8) whose rotation in a first direction lifts the flexible screen (10) into an open position of the door (1) and whose rotation in a second direction lowers the flexible screen (10) in a closed position of the door (1). Moreover, the flexible screen (10) includes at the lower transverse end thereof a sheath (15) in which is inserted a transverse reinforcement member having each of its ends engaged into a slide (5), said reinforcement member having a horizontal flexibility permitting the disengagement thereof from at least one slide (5) in the case of an abnormal substantially horizontal force onto the reinforcement member without undergoing any permanent deformation that could impede any further operation of the screen (10), and a linear density such that the collision with an object on the path of the screen during its lowering into the closed position generates a dynamic force on said obstacle lower than 50 N during the 0.25 seconds following the collision. |
