| 摘要 |
PROBLEM TO BE SOLVED: To provide a link connecting structure which is improved in durability by enhancing the fatigue rigidity of a bearing support part of a lower link.SOLUTION: A bearing support part 24 of a lower link upper 20 is formed into a bifurcated shape by a pair of bearing flange parts 24a, 24b, and an upper link 3 is inserted into an accommodation groove 26 between the bearing flange parts 24a, 24b. By inserting the upper link 10, the lower link upper 20 and the upper link 3 are relatively rotatably connected to each other. In a state that the lower link upper 20 is single, the bearing flange parts 24a, 24b are formed so as to be almost outwardly opened ((B) in Fig. 3), and at the insertion of the upper pin 10, the upper pin 10 is inserted in a state that the bearing flange parts 24a, 24b are constrained so as to be parallel with each other. As a result, residual compression stress is imparted to roots of the bearing flange parts 24a, 24b, and fatigue rigidity is improved. |
