Simplified multi-function hinge

1 . A simplified multi-function hinge comprising a body ( 3 ) and a connection element ( 5 ) mutually connected by a hinge pin ( 7 ), said body ( 3 ) and connection element ( 5 ) configured for fixation respectively to a door and to a frame or structure of an appliance or vice versa, and configured for rotation with respect to each other between a closed condition (C) of the hinge ( 1 ), in which the door closes an opening of the appliance frame or structure, and a maximum opening condition (A) of the hinge ( 1 ), in which the door forms an angle of maximum opening with a plane defined by an edge of the opening; said hinge ( 1 ) also comprising an elastic element ( 17 ) connected to the body ( 3 ) to transmit, via a transmission element ( 6 ), an elastic closing force to the connection element ( 5 ); the hinge ( 1 ) wherein the transmission element ( 6 ) comprises:

a first extreme portion ( 9 ) constrained to the connection element ( 5 ) by a coupling of a first cam ( 11 ) and a first pin ( 13 ), fixed respectively in the first extreme portion ( 9 ) and on the connection element ( 5 ) or vice versa;

a second extreme portion ( 15 ) opposite to the first extreme portion ( 9 ) and constrained to the elastic element ( 17 ) connected to the body ( 3 );

an intermediate portion ( 19 ) between the first extreme portion ( 9 ) and the second extreme portion ( 15 ) constrained to the body ( 3 ) by the coupling of a second cam ( 21 ) and a second pin ( 23 ), fixed respectively in the intermediate portion ( 19 ) and on the body ( 3 ) or vice versa;

wherein said transmission element ( 6 ) is constrained to the connection element ( 5 ) also by a coupling of a third cam ( 24 ) and a third pin ( 27 ), fixed respectively in the transmission element ( 6 ) and on the connection element ( 5 ) or vice versa.

2 . The hinge according to claim 1 , wherein the third cam ( 24 ) comprises a shaped edge ( 25 ) of the first extreme portion ( 9 ) and wherein the third pin ( 27 ) is fixed to the connection element ( 5 ).

3 . The hinge according to claim 2 , wherein the shaped edge ( 25 ), the first cam ( 11 ) and the second cam ( 21 ) are formed in the transmission element ( 6 ), the transmission element that has an elongated shape and an end opposite to the shaped edge ( 25 ) has an attack ( 26 ) for the elastic element ( 17 ), the elastic element ( 17 ) comprising a spring ( 18 ) operating in traction or a compressed spring ( 18 ) provided with a spring guide ( 20 ) connected to said attack ( 26 ).

4 . The hinge according to claim 3 , wherein the first cam ( 11 ) has an arc shape extending substantially perpendicular to the longitudinal dimension of the transmission element ( 6 ), and/or the second cam ( 21 ) has a generally “S” shape extending substantially parallel to the longitudinal dimension of the transmission element ( 6 ), and/or the shaped edge ( 25 ) extends substantially parallel to the longitudinal dimension of the transmission element ( 6 ) or inclined, with the first cam ( 11 ), the second cam ( 21 ) and the third cam ( 24 ) shaped in such a way that the third pin ( 27 ) is always in contact with the third cam ( 24 ) between the closed (C) and maximum opening (A) conditions of the hinge ( 1 ).

5 . The hinge according to claim 1 , wherein the first cam ( 11 ) comprises a respective slot formed in the first extreme portion ( 9 ) and that the first pin ( 13 ) is fixed to the connection element ( 5 ) and/or the second cam ( 21 ) comprises a respective slot formed in the intermediate portion ( 19 ) and the second pin ( 23 ) is fixed to the body ( 3 ).

6 . The hinge according to claim 1 , wherein the third cam ( 24 ) has concavities and convexities defining weakly stable positions for the third pin ( 27 ) corresponding to respective said conditions of the hinge ( 1 ).

7 . The hinge according to claim 1 , further comprising friction elements ( 29 ) of elastically compressible material are fixed along an edge of at least one of the first cam ( 11 ) and the second cam ( 21 ) to make a transversal dimension of the first cam ( 11 ) and/or of the second cam ( 21 ) less than a diameter of the respective first pin ( 13 ) or second pin ( 23 ), so as to oppose sliding.

8 . The hinge according to claim 1 , further comprising a blocking element ( 31 ) constrained to the connection element ( 5 ) and operable, close to the maximum opening condition (A), between an interference state (X) of the blocking element ( 31 ), in which the blocking element interferes with the transmission element ( 6 ) to prevent the hinge ( 1 ) from reaching the closed condition (C), and a disengagement state (Y) of the blocking element ( 31 ), in which the blocking element does not interfere with the transmission element ( 6 ).

9 . The hinge according to claim 1 , further comprising shaped holes ( 33 ) formed on the body ( 3 ) for fixing the body to the appliance by respective screws, each of the shaped holes ( 33 ) having protrusions ( 35 ) projecting towards an inside of the shaped hole ( 33 ) configured for irreversibly deforming during screwing of the respective screw to improve grip.

10 . The hinge according to claim 1 , wherein at least one of the first pin ( 13 ), the second pin ( 23 ) and the third pin ( 27 ) has a roller to facilitate sliding along the respective first cam ( 11 ) or second cam ( 21 ) or third cam ( 24 ).