Rudder group for boats

1. Rudder group ( 10 ) for boats ( 100 ) comprising a rudder blade ( 12 ) that is releasably coupled to a rudder pin ( 11 ) to form a releasable coupling with said rudder pin ( 11 ), said rudder pin ( 11 ) being able to rotate along an axis (A) passing on the plan of said rudder blade ( 12 ) to define the forward direction of said boat ( 100 ), said rudder blade ( 12 ) also being connected in a rotatable manner to a support element ( 14 ) fitted onto said rudder pin ( 11 ) so that said rudder blade ( 12 ), when it is released from said rudder pin ( 11 ), can freely rotate between a lowered position, wherein it is arranged longitudinally with respect to said rudder pin ( 11 ), and a maximum raised position wherein it is substantially perpendicular to said rudder pin ( 11 ), characterized in that said releasable coupling of said rudder blade ( 12 ) with said rudder pin ( 11 ) is obtained through a connection element ( 13 ) that can break at a predetermined load to free the rotation of said rudder blade ( 12 ) with respect to said support element ( 14 ) wherein the end portion of said rudder pin ( 11 ) coupled with said rudder blade ( 12 ) is fork shaped to receive said rudder blade ( 12 ), said fork having a width such as to allow the insertion of said rudder blade ( 12 ) with a tolerance that is sufficient to allow it to rotate when it is released by said rudder pin ( 11 ).

2. Rudder group ( 10 ) according to claim 1 , characterised in that said breakable connection element ( 13 ) comprises a pin element ( 13 ), said pin element ( 13 ) being inserted respectively in through holes ( 20 , 21 ) formed on said rudder blade ( 12 ) and on an end portion of said rudder pin ( 11 ).

3. Rudder group ( 10 ) according to claim 1 , characterised in that said pin element ( 13 ) is equipped with weakenings at the inner edges of said fork for receiving said rudder blade ( 12 ).

4. Rudder group ( 10 ) according to claim 3 , characterised in that said weakenings comprise cuts for facilitating its breaking.

5. Rudder group ( 10 ) according to claim 1 characterised in that said support element ( 14 ) comprises a through hole for coupling said rudder pin ( 11 ) and on the other side with a fork for receiving said rudder blade ( 12 ), said rudder blade ( 12 ) being coupled, in a rotatable manner to form a rotatable coupling, to said support element ( 14 ) at said fork.

6. Rudder group ( 10 ) according to claim 5 , characterised in that said rotatable. coupling between said rudder blade ( 12 ) and said fork of said support element ( 14 ) is obtained through a through pin inserted respectively in through holes ( 32 , 33 ) formed on said rudder blade ( 12 ) and on said fork portion of said support element ( 14 ).

7. Rudder group ( 10 ) according to claim 6 , characterised in that inside of said fork of said support element ( 14 ) shaped so as to prevent the rotation of said rudder blade ( 12 ) beyond a predetermined limit angle.

8. Rudder group ( 10 ) according to claim 7 , characterised in that the upper profile of said rudder blade ( 12 ) is shaped so as to engage said shaped element of said support element ( 14 ).

9. Rudder group ( 10 ) according to claim 1 characterised in that it is mounted on the transom in a configuration so that said support element ( 14 ) is in a position that is out of the water with respect to the water line ( 23 ), said rudder group ( 10 ) also comprising a separation tab ( 22 ) that is fixedly attached to said support ( 14 ) arranged between said support element ( 14 ) and said rudder blade ( 12 ) to direct the flow of the water towards the stern, said separation tab ( 22 ) being fork-shaped so as to allow the rotation of said rudder blade ( 12 ) with respect to said support element ( 14 ).