Attachment device for attaching an accessory to the shell of a protective helmet

Abstract

An attachment device for attaching an accessory to a shell of a protective helmet is described, the shell comprising a shell body and a functional band around at least one front part and/or rear part of the shell body. The functional band comprises a central wall, an upper wall and a lower wall, and an attachment seat formed by an opening in the upper wall and in the lower wall. The attachment device comprises an upper portion from which a flat central stem and two lateral prongs inclined with respect to the plane defined by the central stem extend. The central stem has, at its free end, an foot extending in a direction perpendicular to the central stem and configured to engage with the opening in the lower wall.

1 . An attachment device for attaching an accessory to a shell of a protective helmet, the shell (comprising a shell body and a functional band around at least one front and/or rear part of the shell body, wherein the functional band comprises a central wall, an upper wall and a lower wall, wherein the functional band comprises an attachment seat formed by an opening in the upper wall and in the lower wall of the functional band,
 wherein the attachment device comprises an upper portion from which a flat central stem and two lateral prongs inclined with respect to the plane defined by the central stem extend, wherein the central stem has, at its free end, an foot extending in a direction perpendicular to the central stem and configured to engage with the opening in the lower wall,   wherein the attachment device further comprises a lug protruding downwards from the foot for disengaging the opening in the lower wall during release of the device.   
     
     
         2 . The attachment device according to  claim 1 , wherein the foot comprises a projecting portion configured, when the foot engages with the opening in the lower wall, to abut against the external edge of the opening. 
     
     
         3 . The attachment device according to  claim 1 , wherein the lug has, on one of its sides, a surface inclined with respect to the plane defined by the central stem. 
     
     
         4 . The attachment device according to  claim 1 , comprising, along its upper portion, fixing means for fixing said attachment device to an accessory to be attached to the functional band. 
     
     
         5 . The attachment device according to  claim 4 , wherein said fixing means comprise a threaded hole configured to house a screw for fixing said attachment device to said accessory. 
     
     
         6 . A protective helmet comprising a shell comprising in turn a shell body and a functional band around at least one front part and/or rear part of the shell body, wherein the functional band comprises a central wall, an upper wall and a lower wall, wherein the functional band comprises an attachment seat formed by an opening in the upper wall and in the lower wall of the functional band, the protective helmet further comprising an attachment device according to  claim 1  fixed to the functional band.