| 摘要 |
<p>A pivot joint comprises a first member (2) and a second member (3) to be pivotally connected together, the first member (2) being of channel section at least in the region of the joint and having a pair of aligned indentations (6) on the joint axis which form opposed projections (8) in the channel of the first member (2) and the second member (3) being of dimensions adapted to sit within the first member (2) with clearance and having a pair of aligned recesses or apertures (9) for alignment with the projections (8) of the first member (2) and a generally channel sectioned joint body (10) of plastics material adapted to sit within the first member (2) in the clearance between the first and second members (2,3) and having a pair of internally oppositely extending trunnions (17) for engagement in the recesses or apertures (9) in the second member (3) and a pair of recesses (15) situated externally of the joint body (10) and aligned with the trunnions (17) for engagement with the projections (8) on the first member (2).</p> |
