Device for unhooking the visor from the cap of a crash-helmet, in particular for motorcycling

Abstract

Device for fastening/unfastening the visor from the cap of a helmet of the type with front opening and two side devices for rotating the visor from an operative position of interception of the front opening to a raised position of the visor itself, comprising, for each rotating device, an elastic cursor fitted in such a way that it can be turned and can slide axially in a seat in the same rotation device. This elastic cursor, in its relative movement with respect to the seat, can translate from an engaged to a disengaged position with a retaining hole made in a rear end of the visor. The device further comprises means for allowing the axial sliding of the elastic cursor with respect to the seat exclusively in one or more predefined angular positions assumed by the same cursor with respect to the seat.

1 . Device for fastening/unfastening the visor from the cap of a helmet of the type with front opening and two side devices for rotating the visor from an operative position of interception of the front opening to a raised position of the visor, comprising, for each rotating device, an elastic cursor fitted in such a way that it can be turned and can slide axially in a seat in the same rotation device, the elastic cursor being movable between an engaged and a disengaged position with a retaining hole made in a rear end of the visor, characterised in that it comprises means to allow the axial sliding of said cursor with respect to said seat exclusively in one or more predefined angular positions assumed by the same cursor with respect to said seat.  
     
     
         2 . Device according to  claim 1 , wherein said visor, in its operative position, may be set in flush with the cap and wherein each of said rotating devices comprises at least one rotating body for turning the visor with respect to the cap and said seat is a lifting support for moving the visor away from or towards the cap.  
     
     
         3 . Device according to either of the previous claims, characterised in that said cursor rotates together with the visor.  
     
     
         4 . Device according to  claim 3 , wherein said angular positions in which the cursor can slide axially with respect to said support coincide with the angular position assumed by the cursor when the visor is in said raised position.  
     
     
         5 . Device according to any one of the preceding claims, characterised in that said means for allowing axial sliding act through interference of parts.  
     
     
         6 . Device according to  claim 5 , characterised in that said means for allowing axial sliding comprise one or more projecting parts integral with said cursor and a sliding surface of said seat for said projecting parts to rest on, said sliding surface being provided with one or more housings in which the projecting parts can be engaged for the axial sliding of the cursor.  
     
     
         7 . Device according to any one of the preceding claims, characterised in that it comprises a rotating body connected to said seat in such a way that it is free to turn.  
     
     
         8 . Device according to  claim 7 , characterised in that said rotating body comprises grooved guides within which said side end of the visor may be inserted.  
     
     
         9 . Device according to  claim 7  or  8 , wherein said rotating body is interposed between said cursor and said seat, the cursor being constrained to said sliding body in an axially sliding manner.  
     
     
         10 . Device according to any one of the previous claims, characterised in that it comprises elastic means acting on said cursor moving away from said seat.  
     
     
         11 . Device according to  claim 9  and  10 , characterised in that said elastic means are composed of a helical spring interposed between said cursor and said rotating body.  
     
     
         12 . Device according to  claim 7 , characterised in that it comprises a plate integral with said rotating body, said plate being provided with at least one tooth that can engage removably in corresponding grooves or holes present in said seat.