| 摘要 |
1,019,176. Ball joint assemblies. THOMPSON RAMO WOOLDRIDGE Inc. Dec. 23, 1963 [Jan. 10, 1963], No. 50699/63. Heading E2F. A joint assembly comprises a pair of relatively rotatable members, an open mesh sleeve of a self-lubricating plastics material in relative movable contact with one of the members and an elastomeric bushing held under load between the sleeve and the other of the members. In one embodiment the assembly consists of a ball portion 14, together with an elastomeric bushing 22 held under load between an openworked self-lubricating plastics liner 19 and the socket 12, the amount of load being sufficient to interlock the bushing and the liner, and to urge the liner into relative surface movement with the ball portion 14. The joint is constructed by first placing the open-worked liner 19 over the ball portion, passing the elastomeric sleeve 23 over the liner and inserting this unit in the socket 12. The sleeve is so constructed that it is longer than the inner surface 16 of socket 12 when in abutting relation with the in-turned shoulder 18, so that when a cap 26 is forced in position and held there by peening over the edge 28, the sleeve 23 distorts to form two shoulders 32, 33 causing the liner 19 to be held against ball portion 14 and additionally ensures that no relative movement takes place between the liner and sleeve 23. In a second embodiment Fig. 4, (not shown), the subassembly of which consists of an inner perforated, longitudinally split metal sleeve 53 in engaging contact with an elastomeric bushing 57, and an open-worked liner 56 of self-lubricating material in bearing contact with the inner surface of the outer member 43 the bushing is put under load during construction by forcing a tapered arbor 66, Fig. 5, (not shown) through the inner sleeve 53, axial expansion being prevented by end abutment 45 and annular retaining ring 58. The load on the bushing is sufficient to effect interlocking engagement with the inner sleeve 53 and the liner 56. Lubricant such as grease may be used to assist the self-lubricating liner. |
