| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet opening/closing drive unit capable of opening/ closing a natural lighting part in a curved surface, inclined surface, or ceiling surface by run of a sheet shading the natural lighting part. SOLUTION: This sheet opening/closing device 1 is provided with a transmission shaft 3 in an opening/closing direction of a natural lighting part S, a drive motor 2 to rotate the transmission shaft 3, and a first rotation transmitting body 9 slidable to the transmission shaft 3 to be engaged with it in a circumferential direction. A frame 8 to rotatably support the first rotation transmitting body 9 is provided, a second rotation transmitting body 10 to be meshed with the first rotation transmitting body 9 is provided in the frame 8, and the second rotation transmitting body 10 transmits rotation to a drive wheel 12 to run the drive wheel 12 to move the frame 8 pulls a sheet 13. The drive wheel 12 may be driven to rotate along a guide rail 19, or it may be moved to wind cables 14, 15. As the frame 8 pulls the sheet 13 to open/close it, the sheet 13 can be moved along a shading surface of any shape. |
