Protection device for helmet

Abstract

A helmet ( 1 ) comprising: a rigid outer shell ( 2 ); at least one inner portion ( 4 ) comprising a first energy absorbing material; wherein the helmet ( 1 ) further comprising a protection device ( 3 ) comprising a protective section ( 3 a ), wherein the protective section ( 3 a ) comprises a surface portion ( 3 b ), wherein a second energy absorbing material ( 5 ) is arranged between the first energy absorbing material ( 4 ) and the surface portion ( 3 b ) of the protective section ( 3 a ).

1 . A helmet comprising:
 a rigid outer shell;   at least one inner portion comprising a first energy absorbing material;   wherein the helmet further comprising a protection device comprising a protective section, wherein the protective section comprises a surface portion, wherein a second energy absorbing material is arranged between the first energy absorbing material and the surface portion of the protective section.   
     
     
         2 . The helmet according to  claim 1 , wherein the protective section comprises a raised protective section extending from the rigid outer shell. 
     
     
         3 . The helmet according to  claim 1 , wherein the second energy absorbing material is arranged adjacent the first energy absorbing material. 
     
     
         4 . The helmet according to  claim 1 , wherein the protection device is formed integrally with the rigid outer shell, wherein the protective section comprises the rigid outer shell, wherein the protective section forms an inner space, wherein the second energy absorbing material is arranged in the inner space. 
     
     
         5 . The helmet according to  claim 1 , wherein the protection device is arranged on the rigid outer shell, wherein the rigid outer shell is arranged between the first energy absorbing material and the second energy absorbing material. 
     
     
         6 . The helmet according to  claim 1 , wherein the protective section further comprises an edge portion wherein the surface portion and edge portion forms the inner space and the edge portion has an angle α in relation to the surface portion, wherein α>90°, preferably in the range of 110°-160°. 
     
     
         7 . The helmet according to  claim 1 , wherein the protection device comprises a plurality of raised protective sections. 
     
     
         8 . The helmet according to  claim 1 , wherein the helmet comprises a front portion and a rear portion, wherein the protection device is formed on the front portion of the helmet. 
     
     
         9 . The helmet according to  claim 1 , wherein the first energy absorbing material comprises Expanded Polypropylene. 
     
     
         10 . The helmet according to  claim 1 , wherein the second energy absorbing material comprises foam polyurethane, preferably viscoelastic flexible polyurethane. 
     
     
         11 . The helmet according to  claim 1 , wherein the surface portion comprises a low friction material having a friction coefficient μ against itself, i.e. wherein the countersurface/material is formed by the low friction material, below 0.6, more preferably being in the range of 0.1<μ<0.4. 
     
     
         12 . A helmet comprising:
 a rigid outer shell;   at least one inner portion comprising a first energy absorbing material;   wherein the rigid outer shell comprises a low friction material.