Device for transmission of the movement to cooling fans of engines, equipped with means for stopping the fan in its idle condition

摘要

Device for transmission of the movement to a fan ( 1 ) for cooling the coolant in a motor vehicle, comprising means ( 21;141;31 a) for supporting the fan ( 1 ) on which the fan ( 1 ) is mounted by means of an idle support ( 1 a), means ( 3 ) for generating the movement, a first electromagnetic clutch ( 30 ), engagement of which produces rotation of the fan ( 1 ) at a number of revolutions equal to that of the movement generating means ( 3 ); also comprising means ( 50;150;250;350;450 ) for stopping rotation of the fan ( 1 ) in its idle condition.