Extraction and rotation device for the visor of a crash helmet for motorcycles

Abstract

A device for extraction and rotation of a visor for helmets comprising a cap, a recess or hole made in the cap, in which there may be positioned, so that it is perfectly set in, a visor, and means for expelling of the visor. The means for expelling the visor comprise an extractor ensemble designed to enable the application of a force of thrust on the visor directed towards the outside of the helmet, and two inclined guiding elements, which are set at the side ends of the hole and are designed to engage slidably two slide means connected to the visor for enabling translation of the slide means from a first position, in which the visor is set in inside the recess or hole, to a second position, in which the visor is extracted from the hole provided in the cap and is ready to be rotated, and vice versa (FIG. 2 )

1 . A device for extraction and rotation of a visor for helmets comprising a cap, a hole made in the cap, in which there may be positioned, so that it is perfectly set in, a visor, and means for expelling the visor, said device being characterized in that said expulsion means comprise an extractor ensemble designed to enable application of a force of thrust on the visor directed towards the outside of the helmet, and at least two inclined guiding elements, set at the side ends of the hole, and designed to engage slidably at least two slide means connected to the visor for enabling translation of said slide means from a first position, in which the visor is set in inside the hole, to a second position, in which the visor is extracted from the hole and is ready to be rotated, and vice versa.  
     
     
         2 . The device for extraction and rotation of a visor according to  claim 1 , characterized in that said inclined guiding elements form a tapering converging towards the rear part of the helmet.  
     
     
         3 . The device for extraction and rotation of a visor according to any one of the preceding claims, characterized in that said two slide means are each connected to one side end of the visor by means of rotating blocks housed in such a way that they can turn on said slide means.  
     
     
         4 . The device for extraction and rotation of a visor according to any one of the preceding claims, characterized in that said two guiding elements comprise elastic means, which are set between said guiding elements and said slide means and are designed to withhold the slide means in said first position, in which the visor is perfectly set in inside the hole, and to favour the thrust of said slide means in the transition towards said second position, in which the visor is extracted from the hole and ready to be rotated.  
     
     
         5 . The device for extraction and rotation of a visor according to  claim 4 , characterized in that said elastic means comprise at least one flat spring provided with an end having an undulated profile designed to co-operate with a follower element, said flat spring being constrained on the guiding element and said follower element being constrained on the slide means, or vice versa.  
     
     
         6 . The device for extraction and rotation of a visor according to any one of the preceding claims, characterized in that said extractor ensemble comprises a cavity which is made on the chin-piece of the helmet or in a support anchored to the chin-piece of the helmet and is designed to enable insertion inside it and underneath the visor of at least one finger designed to exert a force of extraction on the visor.  
     
     
         7 . The device for extraction and rotation of a visor according to any one of the preceding claims from  claim 1  to  claim 5 , characterized in that said extractor ensemble comprises a lever which is hinged to an internal portion of the chin-piece of the helmet and/or of a support anchored to the chin-piece of the helmet and is designed to rotate about the point of hinging in order to exert a pressure against at least one internal portion of the visor that is sufficient for the latter's extraction.  
     
     
         8 . The device for extraction and rotation of a visor according to  claim 7 , characterized in that the lever is connected to elastic means set between said lever and at least one internal portion of the chin-piece and/or of the support anchored to the chin-piece.  
     
     
         9 . The device for extraction and rotation of a visor according to  claim 7  or  claim 8 , characterized in that said extractor ensemble comprises a release device designed to enable said elastic means to exert a thrust on said lever.  
     
     
         10 . The device for extraction and rotation of a visor according to claim  9 , characterized in that said release device comprises a slider which is able to translate vertically between a first position, in which it withholds at least one element projecting from said lever to prevent the operation of said elastic means, to a second position in which, leaving free said projecting element, it enables the operation of said elastic means.  
     
     
         11 . The device for extraction and rotation of a visor according to  claim 10 , characterized in that said slider comprises second elastic means designed to maintain said slide in the position for retaining said projecting element.  
     
     
         12 . The device for extraction and rotation of a visor for helmets according to  claim 10  or  claim 11 , characterized in that said slider further comprises a safety catch for the visor.  
     
     
         13 . The device for extraction and rotation of a visor according to any one of  claims 9  to  12 , characterized in that it further comprises a lever-type button designed to operate the release device.  
     
     
         14 . The device for extraction and rotation of a visor according to  claim 13 , characterized in that said lever-type button is hinged coaxially to said lever and has inclined lateral guides designed to engage slidably sliding pins present on said slider.