| 摘要 |
<p>Automatic locking device for mechanical shutters comprising a winding shaft (1) on which the screen (3) of the shutter which consists of slats (31) of the shutter is wound by means of a driving mechanism; characterised in that it comprises: - at least one spring element (5) designed in such a way as to push the screen (3) of the shutter outwards with respect to the winding shaft (1) during the unwinding of the said shutter; - at least one stop element (11) consisting of a series of teeth-shaped projections (13) arranged at at least one lateral end of the screen (3) and opposite one of the upper slats (31) of the screen (3) when the shutter is completely unwound; - and in that at least one of the upper slats (31) of the screen (3) consists of a tubular profile (33) having, at at least one lateral end, a blocking end-piece (35) capable of being blocked in the corresponding stop element (11), when it is attempted to raise the screen (3) of the unwound shutter from the outside. <IMAGE></p> |
