| 摘要 |
<p>Operating device for automatically unlocking and opening a window leaf (1), including a moving wing (3) and, possibly, a semi-fixed wing (4) in contact with the edge of the moving wing when the window is closed and able to be immobilised temporarily facing the fixed frame (2) of the window case which receives the two wings by means of a blocking mechanism (9). This device is characterised in that it includes, inside a housing (10) of the semi-fixed wing or of the frame, an operating knob (8) able to release an operating rod (18) subjected to the action of a triggering spring (21) and acting in vertical displacement over a cam (25) mounted so that it can pivot about a horizontal spindle (26) supported by the semi-fixed wing or the frame, this cam including a notch (27) for receiving a catch (28) carried by the moving wing, so that the pivoting of the cam inside the housing under the effect of the operating rod controlled by the knob, results in a force on the latch of the moving wing, separating it from the semi-fixed wing, itself eventually released by releasing the blocking mechanism. <IMAGE></p> |
