用于卷绕/展开在建筑物的墙壁上制成的开闭器类型的开口的快门屏幕的装置，包括： - 滚筒（1），其旋转所述围裙的缠绕/展开，所述滚筒 （1）可固定在两个固定端支架（5,6）上; - 布置在所述滚筒（1）的一端处的马达装置（3），所述马达装置可滑动地安装在所述滚筒（1）内部的缩回状态和展开状态之间，从而改变所述卷绕装置/退绕的长度 在小于分隔支撑件（5,6）的距离d的第一长度和基本上等于所述距离d的第二延伸长度之间; - 所述马达装置（3）包括固定装置（4）到第一支撑件（5）; - 附接件（7,8）与第二支撑件（6）配合，以装备鼓（1）的另一端。 马达装置（3）包括处于对应于所述延伸长度的扩张状态的装置的轴向锁定装置（10,11）。

A winding / unwinding of a closure screen with an opening in a wall of a building, of the type shutter, comprising:
- a drum (1) rotating the winding / unwinding of the apron, said drum (1) being securable to the two supports (5, 6) fixed end;
- motor means (3) disposed at one end of the drum (1), slidably mounted within said drum (1) between a retracted state and an expanded state by varying the length of the winding device / flow between a first length less than the distance d separating the supports (5, 6) and a second extended length substantially equal to said distance;
- said motor means (3) having fixing means (4) to a first support (5);
- a fixing piece (7, 8) to the second support (6) fitted to the other end of the drum (1). The motor means (3) comprises axial blocking means (10, 11) of the device in the expanded state corresponding to said deployed length.