Patent ID: 7506827

Claim:
A fuel injector ( 1 ) comprising an injection nozzle ( 3 ); an injection valve ( 7 ) having a movable pin ( 15 ) for regulating fuel flow through the injection nozzle ( 3 ); and an actuator ( 5 ) for moving the pin ( 15 ) between a closed position and an open position opening the injection valve ( 7 ) in opposition to a spring ( 11 ) which keeps the pin ( 15 ) in the closed position; the actuator ( 5 ) comprising a movable armature ( 10 ) connected mechanically to the pin ( 15 ), and an antirebound device ( 20 ), which is interposed between the movable armature ( 10 ) and the pin ( 15 ) to connect the movable armature ( 10 ) and the pin ( 15 ) mechanically and comprises at least one deformable elastic plate ( 32 ; 45 ; 48 ) having a periphery; wherein the plate which is annular in shape and has two opposite base walls, is connected centrally to the pin ( 15 ), and is connected laterally to the armature ( 10 ) to transmit at least the closing movement of the injection valve ( 7 ) from the armature ( 10 ) to the pin ( 15 ); wherein the deformable elastic plate ( 32 ; 48 ) is rigidly secured centrally to the pin ( 15 ), and is directly connected to the armature ( 10 ) at the periphery of said plate such that it is rigidly secured laterally to the armature ( 10 ) to connect the armature ( 10 ) and the pin ( 15 ) mechanically for transmitting the movement of the injection valve ( 7 ) from the armature ( 10 ) to the pin ( 15 ); and wherein the antirebound device ( 20 ) comprises two annular first bodies ( 35 , 36 ; 53 ) connected rigidly to the pin ( 15 ) and contacting directly the two opposite base walls of the deformable elastic plate ( 32 ; 48 ) to sandwich the elastic plate ( 32 ; 48 ) between them.