Device for opening and closing an outwardly opening pivoting wing

1. A device for opening and closing an outwardly opening pivoting wing, comprising:

an actuating device including a support, a crank rotatable relative to the support and a control mechanism operated by the crank, and an arm having a toothed portion which cooperates with said control mechanism, wherein the control mechanism cooperates with the toothed portion for swinging the arm between a closed wing angular position and an open wing angular position, and wherein in the closed wing angular position, the control mechanism cooperates with the toothed portion of the arm for the translational motion of the arm along a rectilinear direction between a locked wing position and an unlocked wing position, and vice versa, characterized in that it comprises:

a first and a second slider for engagement with a groove of the wing in a movable manner in the rectilinear direction, wherein the first slider is articulated at a distal end of the arm and wherein the second slider is connected to a locking device including a plurality of locking elements carried by the wing and connected to each other by a plurality of connecting rods, and

a connecting member intended to be mounted on a fixed frame of the wing, said connecting member comprising a fixed base and a striker movable in the rectilinear direction, wherein the movable striker comprises two seats for engagement by respective teeth of the first and second sliders.

2. A device according to claim 1 , characterized in that said arm has a circular articulation seat communicating with a straight guide radial with respect to said circular articulation seat, wherein said fixed pin engages said straight guide in the locked wing position and engages said circular articulation seat in said unlocked wing position.

3. A device according to claim 1 , characterized in that said arm comprises a hook portion which in said locked wing position engages an opening of a fixed projection.

4. A device according to claim 1 , characterized in that said control mechanism comprises a worm screw fixed to said crank and meshing with a gear wheel.

5. A device according to claim 4 , characterized in that said gear wheel has a toothing with helical teeth and in that said toothed portion of the arm has a toothing with helical teeth which meshes with said toothing with helical teeth of the gear wheel.

6. A device according to claim 4 , characterized in that said gear wheel has a first toothing with helical teeth and a second toothing with straight teeth, wherein the first toothing meshes with said worm screw and wherein said toothed portion of the arm has a toothing with straight teeth, which meshes with said second toothing.

7. A device according to claim 4 , characterized in that said gear wheel has a toothing with straight teeth, and in that said toothed portion of the arm has a toothing with straight teeth which meshes with said toothing with straight teeth of the gear wheel.

8. A device according to claim 1 , characterized in that said toothed portion of the arm has a circular toothed portion and a straight toothed portion adjacent to each other.

9. A device according to claim 1 , characterized in that said arm comprises a first arm portion and a second arm portion fixed together by means of an adjusting device which allows adjustment of the angular position between the first and the second arm portions.