| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fastening member body from corroding by external atmosphere and to protect the fastening member from all environments by providing the fastening member body fixing parts on a shaft and cover members protecting the fastening member body from external atmosphere. SOLUTION: This fastening member for fixing a part 32 such as a gear to a shaft 31 is constituted by being provided with a fastening member body 10 and cover members 21, 22. The fastening member body 10 is constituted of an inner ring 11, an outer ring 12 and an auxiliary ring 13. By mounting the fastening member body 10 on the shaft 31, inserting the main body 10 into a shaft hole 32a of the part 32 and screwing a bolt 14... into a screw hole 12b1... via a hole 11b1..., the part 32 is fixed on the shaft 31 by wedge effects of the inner and outer rings 11, 12. The cover member 21 is formed into a shallow bottomed cylindrical shape, a bolt 21e is fixed by being screwed into a screw hole 11b 2 of the inner ring 11 or the fastening member body 10 via a mounting hole 21c and the fastening member body 10 is protected from the outside. |
