| 摘要 |
Abstract A shutter comprises an outer frame 4, an inner frame 5 hinged on the outer frame 4, a linkage assembly 6 disposed in the first upright sash 65 at one side of the inner frame 5, and a slat assembly 7 disposed in the inner frame 5 and engaged with the linkage assembly 6 for moving upward or downward. The linkage assembly 6 includes a hidden linkage member 64 and a plurality of movable seats 63 distributed on the linkage member 64. The movable seats 63 are engaged with and driven by slats 71 of the slat assembly 7 to further drive the linkage member 64 to move upward or downward, such that the slats 71 can be moved synchronously to open or close, thereby the slats 71 can be moved steadily and masking effect provided by the slats 71 is improved. |
