| 摘要 |
PROBLEM TO BE SOLVED: To close the downstream end of a lubricating oil path through which oil is fed to the bearing bushes of multiple rotary shafts without using any special closing member such as a blind plug. SOLUTION: Two balancer shafts 21 and 22 are supported on two bearing bushes 52a and 52b both of which are formed with the same member and installed on a balancer holder 29, and lubricating oil paths 293 to 295 which feed oil to the bearing bushes 52a and 52b are formed in the bearing bushes 52a and 52b at positions eccentric upward by a distance of δ from the center O of the bushes 52a and 52b. Also the bushes 52a and 52b are provided with two oil holes 52a1 , 52b1 , 52a2 , and 52b2 with a central angle θ different from 180 deg., respectively, and two oil holes 52a1 and 52a2 of the bearing bush 52a of the balancer shaft 22 are communicated to the lubricating oil paths 293 and 294 , respectively. Then the one oil hole 52b1 of the bearing bush 52b of the balancer shaft 21 is communicated to the lubricating oil path 294 , and the other oil path 52b2 is removed from the lubricating oil path 295 and closed. |
