Protective helmet

Abstract

In an embodiment a protective helmet includes an outer shell configured for distributing impact forces, a support structure spaced apart from and supporting the outer shell, the support structure placeable on a head of a wearer of the protective helmet, wherein the support structure is subdivided into a front support and a rear support spaced apart from the front support, and an adjustable tensioning device configured for exerting a tensioning force on the support structure so that a force flow of the tensioning force for fixing the outer shell on the head of the wearer flows completely through the outer shell and for varying the tensioning force by an adjustment.

1 . - 14 . (canceled) 
     
     
         15 . A protective helmet comprising:
 an outer shell configured for distributing impact forces;   a support structure spaced apart from and supporting the outer shell, the support structure placeable on a head of a wearer of the protective helmet, wherein the support structure is subdivided into a front support and a rear support spaced apart from the front support; and   an adjustable tensioning device configured for:
 exerting a tensioning force on the support structure so that a force flow of the tensioning force for fixing the outer shell on the head of the wearer flows completely through the outer shell; and 
 varying the tensioning force by an adjustment. 
   
     
     
         16 . The protective helmet according to  claim 15 , wherein the tensioning device is configured for exerting the tensioning force on the rear support. 
     
     
         17 . The protective helmet according to  claim 15 , wherein the tensioning device is configured for exerting the tensioning force on the rear support so that the tensioning force is transmitted via the outer shell to the front support. 
     
     
         18 . The protective helmet according to  claim 15 , wherein the tensioning force is a tensile force. 
     
     
         19 . The protective helmet according to  claim 15 , wherein the support structure comprises a contact segment hinged to the outer shell. 
     
     
         20 . The protective helmet according to  claim 19 , wherein the contact segment is hinged to the outer shell via a swing arm. 
     
     
         21 . The protective helmet according to  claim 15 , wherein the support structure has a displaceable guide arrangement, with which a contact segment of the support structure is mounted so as to be displaceable substantially linearly relative to the outer shell. 
     
     
         22 . The protective helmet according to  claim 15 , wherein the rear support is configured for gripping the head by a contact segment of the rear support. 
     
     
         23 . The protective helmet according to  claim 22 , wherein the contact segment of the rear support is operateable parallel to a rear edge of the outer shell. 
     
     
         24 . The protective helmet according to  claim 15 , wherein the tensioning device is configured for adjusting a contact segment of the rear support in a longitudinal direction of the protective helmet. 
     
     
         25 . The protective helmet according to  claim 15 , further comprising an adjustment device configured for adjusting a width of the front support in a transverse direction of the protective helmet. 
     
     
         26 . The protective helmet according to  claim 15 , wherein the front support is arranged stationary relative to the outer shell with respect to a longitudinal direction of the protective helmet. 
     
     
         27 . The protective helmet according to  claim 15 , wherein the front support is semicircular in shape and is arranged in a front region of the outer shell. 
     
     
         28 . The protective helmet according to  claim 27 , wherein the front support is attached to the outer shell in a central region of the semicircular shape. 
     
     
         29 . The protective helmet according to  claim 15 , further comprising front straps configured for fastening the outer shell on the head. 
     
     
         30 . The protective helmet according to  claim 29 , wherein the front straps are attached to the front support on respective end regions of a semicircular shape. 
     
     
         31 . The protective helmet according to  claim 15 , wherein a contact segment of the rear support is semicircular in shape and is arranged in a back of the outer shell. 
     
     
         32 . The protective helmet according to  claim 15 , further comprising rear straps configured for fastening the outer shell on the head, the rear straps being attached to the rear support. 
     
     
         33 . The protective helmet according to  claim 15 , wherein the front support is spaced apart from the rear support such that a hearing protection support of earmuffs is guidable under the outer shell and between the front support and the rear support.