| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a natural window force ventilation window which can be locked by closing a sash, and which can be fully opened from the locked state and a natural wind force ventilation state for smoke exhaustion, and which can be maintained in the fully opened state. <P>SOLUTION: As explained by the left side window, a sash 2 is supported in an open frame 1 so as to be rotated by a horizontal axis by a bearing device 3, and a first position where ventilation is performed with a natural wind force, a second position where the sash 2 is closed, and a third position where the sash 2 is opened are determined in accordance with the position of a vertical link rod 22. When the sash 2 is closed, a trigger 28 which stops the movement of a horizontal link rod 27 is released by the cam part of the sash 2, and a latch formed at the horizontal link rod 27 is engaged with the step of the sash 2. When the sash 2 is fully opened, the vertical link rod 22 is risen and set to the third position, and an upper link rod 32 is moved, and a lower link rod 33 is set to a position where the opening of the sash 2 is maintained by an upper and lower link rod connection part 30. <P>COPYRIGHT: (C)2013,JPO&INPIT |
