| 摘要 |
PROBLEM TO BE SOLVED: To reduce leak of lubricating oil from a guide member connecting in-between in an in-shaft lubricating structure to feed lubricating oil from a lubricating oil passage on the side of a case where a rotary shaft is journalled through an opening part at a shaft end to a lubricating oil feeding hole in the rotary shaft. SOLUTION: The lubricating oil feeding hole 21 is bored to be axially extended in the rotary shaft 20 rotatably journalled to the case 10, and lubricating oil is fed from the lubricating oil passage 12 formed in the case 10 through the guide member 80 into the lubricating oil feeding hole 21. The guide member 80 has a pipe-shaped part protruded into the lubricating oil feeding hole 21, and a spiral structure to let lubricating oil turning with the rotary shaft 20 when it is rotated be introduced to a depth part of the lubricating oil feeding hole 21 is formed on an outer circumferential surface of the pipe-shaped part. |
