| 摘要 |
There is provided a knock down signpost comprising a post member (6) and a lower body member (10) held together by a spring (3) having a preload when the post is vertical, acting two flat surfaces (8) creating an initial resistance to motion off the horizontal. Two steel cables (114) transmit the force of the spring and are spaced apart which allows the cables to act as a non rotation mechanism. Two round protrusions (16) in the post member (6) locate into two matching clearance holes (14) in the lower body for post alignment. A shock tube (4) is fitted over the cable and internal to the spring to prevent over compression and provides a mechanical stop. As the top assembly is rotated chamfered edges (15) of the post member (6) engage and interlock into an annular groove (13) to act as a pseudo-hinge. |
