| 摘要 |
A holder assembly for a crowd control barrier has a bobbin 13 rotatably mounted within a container 12 and configured to have a flexible band 15 wound therearound with the free end 16 of the band emerging from the container whereby the band may be extended so that the free end can be connected to a remote support. When assembled, a spring 25 acts on the bobbin 13 such that tension in the spring is increased as the band 15 is extended whereby the spring may re-wind the band on to the bobbin. The bobbin 13 is axially insertable into and removable from the container 12 to allow the band to be changed. The spring 25 is associated with a carrier 24 and there is a screw-threaded mechanism 27 arranged to rotate the carrier 24 to pre-load the spring 25, as the bobbin 13 is inserted into the container 12. |
