Patent attributes
A lifting cable winding mechanism of a solar radiation shielding device capable of uniformly winding lifting cables for lifting solar radiation shielding materials on the peripheral surfaces of winding drums and minimizing the extra lengths of the lifting cables remaining in a head rail when the solar radiation shielding materials are lowered to a lower limit, wherein a case (2) is fixed in the head rail (1), the winding drums (4) are fitted to a drive shaft (3) axially passed through the inside of the head rail (1) so as to be rotated integrally with each other, slits (6) are provided at the bottom part of the case (2), rings (7) are fitted to the winding drums (4) so as to be rotated integrally with each other and slidably moved in axial direction, guides (11) suspended from the bottom part openings (10) of the head rail (1) are formed at one end parts of the case (2), and the tips of the lifting cables (5) inserted from the slits (6) into the case (2) through the guide (11) are fixed to the rings (7).
