| 摘要 |
PROBLEM TO BE SOLVED: To increase the assemblage of a push rod with a hydraulic piston. SOLUTION: The top end 18a of a push rod 18 is inserted into a hole 24h in a cylindrical part 24b of a hydraulic piston 24, and both of them 18 and 24 are connected to each other through a connecting pin 48 which is inserted into a through hole 24g passing the piston 24 and a large diameter through hole 18b passing the push rod 18. Also a plug 52 and elastic body 54 are present between the bottom surface 24i of a hole 24h and the top end surface 18c of the push rod 18. The plug 52 is formed in a stepped disk shape of which both side surfaces are symmetrical with each other. On the outer periphery of the plug 52, the elastic member 54 is stuck so that it surrounds the plug 52. The elastic member 54 forms three projected parts 54a projected toward the outside of the plug 52, and held elastically against the inner surface of the hole 24c by the projected parts 54a. Thus the assemblage is made easier because the plug 52 and elastic member 54 do not come off from the hydraulic piston 24. |
