| 摘要 |
<p>A fume-extraction flap opening and closing mechanism comprising a vertically fixed beam (5) with a joke (6), provided on its upper end that is in pivot joint with one end of the tie rod (18), connected to the clamping ring (19) of the lower end of actuator (15), whereas the lower end of said beam is in pivot joint with one end of the lever (VV), the other end of which is in pivot joint with the end of actuator (15), whereas the upper end of the beam (5) holds the fixed part (8) of the lock (9), while its movable part (25) is connected, together with the end of actuator rod (22) of said actuator (15), with one end of movable connector (23), the other end of which is in pivot joint with holder (27) mounted to the frame (28) of the fume-extraction flap (3). Moreover, said mechanism is provided with at least one blocking cord (33) with one of its ends connected to the holder (29) mounted on said frame (28) of said fume-extraction flap (3), and the other end connected to the holder (30) of said frame (1) of said roof port (2).</p> |
