Abstract: Control device for positioning a visor for protective helmets, wherein the visor is rotatable from a configuration fully superimposed on the front opening of the protective helmet to a configuration of partial or total disengagement from said opening. The device includes structure to reversibly lock the visor in at least one position relative to the front opening. The structure to lock the visor includes a control element anchored, with at least a degree of freedom, to the visor, coupled to which is at least one tooth or pin, for engagement with at least one stop or seat, integral with the cap of the helmet. The control element is movable between a first stable position in which it controls engagement of the tooth with the relative stop or seat, and at least a neutral position in which it controls disengagement of said tooth from the relative stop or seat.

Abstract: Described herein is a safety helmet comprising a cap equipped with at least one visor, which is hinged to the sides of the front opening of the cap itself and can be rotated between a position of interception of the front opening and a raised position with respect to said opening, and a shielding element, which is also hinged to the sides of the front opening of the cap and is rotatable both with respect to the cap and with respect to the aforesaid visor. The helmet of the present invention likewise comprises first means for limiting, at a predefined angular interval, in both of the directions of rotation, the relative rotary displacement of the shielding element with respect to the visor, and vice versa.