| 摘要 |
PROBLEM TO BE SOLVED: To solve problems with conventional natural wind force ventilation windows such as: a sash of a natural wind force ventilation window that opens/closes by natural wind force is closed by strong wind and is opened when the wind stops, and repeats opening/closing due to a change in the wind force when the wind force is at a certain level; and to provide a natural wind force ventilation window of which the sash is closed under such circumstances, preferably not manually because manual operation is burdensome.SOLUTION: In a natural wind force ventilation window, a temporary lock device 131 includes: a temporary lock pin 155 provided on a bottom rail of a sash; a temporary lock arm 153 provided on an opening frame side for inhibiting opening of the sash by engaging with the temporary lock pin 155, when the sash is at a first position and is almost closed; a temporary lock release inhibition pin 153f fixed on the temporary lock arm 153; a temporary lock control lever 158 that controls and brakes the temporary lock arm 153 by engaging with the temporary lock release inhibition pin 153f; and a temporary lock release member 157 provided on the bottom rail side of the sash and working on the temporary lock control lever 158 when opening the sash, for releasing control by the temporary lock arm 153.SELECTED DRAWING: Figure 20 |
