| 摘要 |
The blind is made of a flexible fabric (2) which covers the glazed surface (3). It has a shaft (4) on which and from which the fabric unrolls. The end of the fabric (5) is attached to a support (6). The support is fixed whereas the shaft (4) moves in front of, or above the surface. When the blind is vertical it is rolled and unrolled by a tubular motor (7) which makes the shaft (4) rotate. When the blind is horizontal or at an angle the shaft rests on the surface of the window on appropriate rollers (8). There are extending arms (9) which push the shaft over the surface. The back end of each arm (12) is mounted on a fixed base (13) at the same height as the support (6). The other end (14) of each arm (10, 11) is fixed to the shaft (4) by a crossbar (16) which lies parallel to the shaft. At each end (17 18) there is a section (19) in which the shaft rotates. Supporting cradles (20) are attached to the cross piece (16). The shaft sits in these cradles.
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