Bollard

Abstract

A bollard device (1) comprising an outer bollard member (2) and an inner bollard member (3) which is provided to be displaceable between a retracted position wherein the inner bollard member (3) substantially extends within an interior space (4) of the outer bollard member (2), and an extended position wherein part of the inner bollard member (3) extends above the outer bollard member (2) wherein the inner bollard member (3) comprises an upper part (5) and a lower part (6), wherein in the extended position the upper part (5) substantially extends above the outer bollard member (2) and the lower part (6) substantially extends within the interior space (4), wherein the lower part (6) of the inner bollard member (3) comprises at least two reinforcement elements (10a, 10b) wherein these reinforcement elements (10a, 10b) form protrusions of the inner bollard member (3).

1 . A bollard device ( 1 ) comprising an outer bollard member ( 2 ) which is provided to be anchored into the ground and a longitudinal inner bollard member ( 3 ) which is provided to be displaceable according to an upright direction between a retracted position wherein the inner bollard member ( 3 ) substantially extends within an interior space ( 4 ) of the outer bollard member ( 2 ), and an extended position wherein an upper part ( 5 ) of the inner bollard member ( 3 ) extends above the outer bollard member ( 2 ) and forms an obstacle for preventing the passage of a vehicle, wherein in the extended position the upper part ( 5 ) substantially extends above the outer bollard member ( 2 ) and a lower part ( 6 ) of the inner bollard member ( 3 ) substantially extends within the interior space ( 4 ) of the outer bollard member ( 2 ), wherein the lower part ( 6 ) of the inner bollard member ( 3 ) comprises at least two reinforcement elements ( 10   a,    10   b ) which are located at a distance from each other with regard to the longitudinal direction of the inner bollard member ( 3 ), wherein these reinforcement elements ( 10   a,    10   b ) form protrusions of the inner bollard member ( 3 ) which are directed outwards and form partly the outer surface of said inner bollard member ( 3 ). 
     
     
         2 . The bollard device ( 1 ) according to  claim 1 , wherein the upper part ( 5 ) and the lower part ( 6 ) together enclose a cavity ( 7 ) which is accessible from the bottom of the inner bollard member ( 3 ) and wherein the bollard device ( 1 ) comprises displacing means ( 8 ,  9 ) for displacing the inner bollard member ( 3 ), wherein at least one of the said displacing means ( 8 ,  9 ) is substantially located inside the said cavity ( 7 ) in the retracted position. 
     
     
         3 . The bollard device ( 1 ) according to  claim 1 , wherein the extended position, at the height of each said reinforcement element ( 10   a,    10   b ) and according to a plane perpendicular to the upright direction, at least one outer dimension of the inner bollard member ( 3 ) corresponds to the corresponding dimension of the interior space ( 4 ) of the outer bollard member ( 2 ). 
     
     
         4 . The bollard device ( 1 ) according to  claim 1 , wherein a said reinforcement element ( 10   a,    10   b ), according to a plane perpendicular to the longitudinal direction of the inner bollard member ( 3 ) and at the height of said reinforcement element ( 10   a,    10   b ), forms substantially the whole circumference of the inner bollard member ( 3 ). 
     
     
         5 . The bollard device ( 1 ) according to  claim 1 , wherein the outer bollard member ( 2 ) comprises a shaft, which forms the said interior space ( 4 ) of the outer bollard member ( 2 ), wherein the cross section of the shaft over substantially its entire length is similar and in which the outer dimensions of the circumference of the inner bollard member ( 3 ) at the height of the reinforcement elements ( 10   a,    10   b ), corresponds to the dimensions of said cross section of the shaft. 
     
     
         6 . The bollard device ( 1 ) according to  claim 2 , wherein the inner bollard member ( 3 ) has a longitudinal base element ( 18 ) which forms the said cavity ( 7 ), wherein the reinforcement elements ( 10   a,    10   b ) lie against the outside of said base element ( 18 ). 
     
     
         7 . The bollard device ( 1 ) according to  claim 5 , wherein the bollard device ( 1 ) comprises a cover ( 21 ) to partially cover up the top of the shaft wherein this cover ( 21 ) extends partly into the shaft and comprises an opening with a cross section which corresponds to the cross section of the longitudinal base element ( 18 ) such that during the displacement of the inner bollard member ( 3 ) from the retracted position to the extended position, the longitudinal base element ( 18 ) will pass trough said opening until a said reinforcement element ( 10   a ) contacts the cover ( 21 ). 
     
     
         8 . The bollard device ( 1 ) according to  claim 1 , wherein the inner bollard member ( 3 ) comprises at least one upright extending bar element ( 11 ), wherein this bar element ( 11 ) also forms a protrusion of the outer surface of the inner bollard member ( 3 ) which is directed outwards and which is preferably located between the said at least two reinforcement elements ( 10   a,    10   b ). 
     
     
         9 . The bollard device ( 1 ) according to  claim 1 , wherein the inner bollard member ( 3 ) comprises at least one upright extending sliding bar ( 12 ), wherein this sliding bar ( 12 ) forms a protrusion of the outer surface of the inner bollard member ( 3 ) which is directed outwards, for facilitating the displacement of the inner bollard member ( 3 ). 
     
     
         10 . The bollard device ( 1 ) according to  claim 2 , wherein the displacement means comprise a motor ( 8 ), wherein this motor ( 8 ) is located inside the said cavity ( 7 ) in the retracted position and in the extended position of the inner bollard member ( 3 ). 
     
     
         11 . The bollard device ( 1 ) according to according to  claim 2 , wherein the bollard device ( 1 ) comprises a stationary pillar ( 13 ) which is situated within the interior space ( 4 ) of the outer bollard member ( 2 ), wherein at least some the said displacement means are connected to said pillar ( 13 ). 
     
     
         12 . The bollard device ( 1 ) according to  claim 11 , wherein the pillar ( 13 ) extends according to the upright direction and the displacement means comprise among others a chain and a sprocket, wherein this chain and this sprocket are connected to the pillar ( 13 ). 
     
     
         13 . The bollard device ( 1 ) according to  claim 10 , and wherein the motor ( 8 ) rests upon the pillar ( 13 ). 
     
     
         14 . The bollard device ( 1 ) according to  claim 1 , wherein the lower part ( 6 ) of the inner bollard member ( 3 ) is connected to at least one of the displacement means, such that the inner bollard member ( 3 ) is displaceable. 
     
     
         15 . The bollard device ( 1 ) according to  claim 1 , wherein the outer bollard member ( 2 ) comprises at least two strengthening elements ( 15   a,    15   b ), which are located at a distance from each other with regard to the upright direction, wherein these strengthening elements ( 15   a,    15   b ) form protrusions of the outer bollard member ( 2 ) which are directed outwards and form partly the outer surface of said outer bollard member ( 2 ), and wherein, in the extended position, at least one strengthening element ( 15   a,    15   b ) is located at the height of a respective reinforcement element ( 10   a,    10   b ). 
     
     
         16 . The bollard device ( 1 ) according to  claim 15 , wherein the outer bollard member ( 2 ) comprises at least one upright extending support element ( 16 ) which connects the said at least two strengthening elements ( 15   a,    15   b ), wherein this support element ( 16 ) also forms a protrusion of the outer surface of the outer bollard member ( 2 ) which is directed outwards. 
     
     
         17 . The bollard device ( 1 ) according to  claim 1 , the outer bollard member ( 2 ) comprises a passage ( 17 ) which connects the interior space ( 4 ) with the outside which surrounds the outer bollard member ( 2 ), such that water can flow from the interior space ( 4 ) to the outside. 
     
     
         18 . The bollard device ( 1 ) according to  claim 1 , wherein the interior space ( 4 ) has a cylindrical shape and the reinforcement elements ( 10   a,    10   b ) have a circular circumference.