High energy impact absorbing post

Abstract

The current invention relates to an impact absorbing post (1) for collision protection comprising a base member (3), a primary impact member (2), at least one inner impact member (9) and connecting members (8), wherein the base member (3) comprises a bottom plate (4) and a hollow connection profile (6), wherein the connection profile (6) is fixed to the bottom plate (4) and extends perpendicular to the bottom plate (4), wherein the primary impact member (2) and the at least one inner impact member (9) are hollow profiles extending perpendicular to the bottom plate (4), wherein the connection profile (6) is placed inside the primary impact member (2), wherein the at least one inner impact member (9) has a shorter length than the primary impact member (2), and wherein the at least one inner impact member (9) is placed at the bottom plate (4) inside the connection profile (6). The invention also relates to a method and a use.

1 . An impact absorbing post for collision protection comprising:
 a base member for mounting the absorbing post on a surface;   a primary impact member for absorbing an impact of a collision; and   connecting members for connecting the primary impact member to the base member,
 wherein the base member includes a bottom plate and a hollow connection profile for connecting the primary impact member to the base member using the connecting members, 
 wherein the connection profile is firmly fixed to the bottom plate and extends substantially perpendicular to the bottom plate, 
 wherein the primary impact member is a hollow profile made from a polymer, wherein the primary impact member extends substantially perpendicular to the bottom plate and 
 wherein the connection profile is placed inside the primary impact member; and 
   at least one inner impact member;
 wherein the at least one inner impact member is a hollow profile made from a polymer, 
 wherein the at least one inner impact member extends substantially perpendicular to the bottom plate, 
 wherein the at least one inner impact member has a shorter length than the primary impact member, 
 wherein the length is measured perpendicularly from the bottom plate, and 
 wherein the at least one inner impact member is placed at the bottom plate inside the connection profile. 
   
     
     
         2 . The impact absorbing post according to  claim 1 , further comprising at least one outer impact member, wherein the at least one outer impact member is a hollow profile made from a polymer, wherein the at least one outer impact member extends substantially perpendicular to the bottom plate, wherein the at least one outer impact member has a shorter length than the primary impact member and a longer length than the at least one inner impact member, wherein the length is measured perpendicularly from the bottom plate and wherein the at least one outer impact member is placed inside the primary impact member and at the bottom plate outside the connection profile. 
     
     
         3 . The impact absorbing post according to  claim 2 , wherein the at least one outer impact member is a series of subsequent outer impact members, wherein every subsequent outer impact member is placed inside a previous outer impact member and wherein every subsequent outer impact member has a shorter length than the previous outer impact member, and wherein the length is measured perpendicularly from the bottom plate. 
     
     
         4 . The impact absorbing post according to  claim 2 , further comprising an anti-buckling member, wherein the anti-buckling member is a hollow profile made from a polymer, wherein the anti-buckling member extends substantially perpendicular to the bottom plate, wherein the anti-buckling member has a shorter length than the primary impact member and a longer length than the at least one inner impact member, wherein the length is measured perpendicularly from the bottom plate and wherein the anti-buckling member is placed inside the at least one inner impact member. 
     
     
         5 . The impact absorbing post according to  claim 4 , wherein the anti-buckling member has a longer length than the at least one outer impact member, and wherein the length is measured perpendicularly from the bottom plate. 
     
     
         6 . The impact absorbing post according to  claim 4 , further comprising a connector for connection of a horizontal rail to the impact absorbing post, wherein the connector extends substantially perpendicular to the impact absorbing post through the primary impact member and wherein the anti-buckling member extends through the connector. 
     
     
         7 . The impact absorbing post according to  claim 1 , wherein the at least one inner impact member is a series of subsequent inner impact members, wherein every subsequent inner impact member is placed inside a previous inner impact member and wherein every subsequent inner impact member has a shorter length than the previous inner impact member, and wherein the length is measured perpendicularly from the bottom plate. 
     
     
         8 . The impact absorbing post according to  claim 1 , wherein the connecting members are at least two bolts and nuts, wherein the bolts are traversing from a first side of the impact absorbing post through the impact absorbing post to a second opposing side of the impact absorbing post, and wherein a first bolt is substantially perpendicular to a second bolt. 
     
     
         9 . The impact absorbing post according to  claim 2 , wherein the at least one inner impact member and the at least one outer impact member are formed as a single profile with a stepped inside, and wherein the single profile has a recess to receive the connection profile. 
     
     
         10 . The impact absorbing post according to  claim 9 , further comprising an anti-buckling member integrated in the single profile. 
     
     
         11 . A method for assembling an impact absorbing post for collision protection comprising the steps of:
 installing a base member on a surface, wherein the base member includes a bottom plate and a hollow connection profile, wherein the connection profile is firmly fixed to the bottom plate and extends substantially perpendicular to the bottom plate;   attaching the bottom plate to the surface;   placing a primary impact member on the base member, wherein the primary impact member is a hollow profile made from a polymer, wherein the primary impact member extends substantially perpendicular to the bottom plate and wherein the connection profile is placed inside the primary impact member;   attaching the primary impact member to the base member, using connecting members; and   placing at least one inner impact member, wherein the at least one inner impact member is a hollow profile made from a polymer, wherein the at least one inner impact member extends substantially perpendicular to the bottom plate, wherein the at least one inner impact member has a shorter length than the primary impact member, wherein the length is measured perpendicularly from the bottom plate and wherein the at least one inner impact member is placed at the bottom plate inside the connection profile.   
     
     
         12 . The method according to  claim 11 , further comprising placing at least one outer impact member, wherein the at least one outer impact member is a hollow profile made a polymer, wherein the at least one outer impact member extends substantially perpendicular to the bottom plate, wherein the at least one outer impact member has a shorter length than the primary impact member and a longer length than the at least one inner impact member, wherein the length is measured perpendicularly from the bottom plate and wherein the at least one outer impact member is placed inside the primary impact member and at the bottom plate outside the connection profile. 
     
     
         13 . The method according to  claim 11 , further comprising placing an anti-buckling member, wherein the anti-buckling member is a hollow profile made from a polymer, wherein the anti-buckling member extends substantially perpendicular to the bottom plate, wherein the anti-buckling member has a shorter length than the primary impact member and a longer length than the at least one inner impact member, wherein the length is measured perpendicularly from the bottom plate and wherein the anti-buckling member is placed inside the at least one inner impact member. 
     
     
         14 . The method according to  claim 13 , further comprising placing a connector for connection of a horizontal rail to the impact absorbing post, wherein the connector first is extended through the primary impact member, whereafter the primary impact member is placed over the anti-buckling member, while extending simultaneously the anti-buckling member through the connector. 
     
     
         15 . The impact absorbing post according to  claim 1 , wherein the impact absorbing post is collision protection resilient to an impact of at least 12 kilo-Joules (KJ).