| 摘要 |
The device for opening/closing from inside is characterised by one or two housings (1) comprising a geared motor which is supplied with a 12-volt safety voltage and which drives reduction pinions. The drive of the bent arm (6) is made integral with the output pinion by means of two fastening screws (7). The housing is fastened to the top and bottom corners of the masonry by means of four dowels (13), and the axis of rotation of the geared motor (2) will be placed as near as possible to the hinge (8) of the shutter. Each leaf (9) is equipped, in the upper or lower part, with a slideway (10), in which is displaced a plastic roller actuated by a driveshaft fastened to the end of the arm (6). The different length of the arms (6) makes it possible to ensure the direction of overlap of one leaf relative to the other. <IMAGE> |
