| 摘要 |
PROBLEM TO BE SOLVED: To mutually connect two railway rolling stock applied to displacement around a lengthwise shaft without generating any resistance force so as to avoid any twist of car body by performing a rotary function and an impact absorbing function by different elements. SOLUTION: A swivel joint has a toroidal central part 3 having a truncated cone-shaped bearing surface 3A, balls 1 and 2 having a hollow conical central part 1A fitted on the truncated cone-shaped bearing surface 3A of this toroidal cental part 3, an elastic member, a disk 5 and a holding screw 6 containing a vertical pivot. In the balls 1 and 2, a first element 1 whose whole shape is a spherical shape is incorporated into an outside second element 2 rotatable arranged on the first element 1. An elastic element symmetrically arranged on both sides of the balls 1 and 2 and a lengthwise shaft of rolling stock imparts lengthwise directional high resiliency (flexibility) by absorbing energy. This elastic element provides sideways high rigidity. |
