| 摘要 |
PROBLEM TO BE SOLVED: To provide a window opening/closing operation device for easily holding a handle in a predetermined posture.SOLUTION: A linear body constituted of a wire rope 9 and a chain 11 is connected to a sliding sash 3. The chain 11 is hung on a sprocket 18 in a handle box 12. The sprocket 18 is connected to a rotary shaft 23 connected via a connection part 24 to a handle 25. When the handle 25 is rotated in a state that a ball 33 of the handle 25 is engaged with a recess 38 of the connection part 24, linear bodies 9 and 11 are driven, and the sash 3 is opened and closed. When the handle 25 is rotated in the closing direction of the sash 3 in a state that the sash 3 is full closed, or the handle 25 is rotated in the opening direction of the sash 3 in a state that the sash 3 is fully opened, the ball 33 of the handle 25 is detached from the recess 38 of the connection part 24, and the handle 25 is idled. |
