| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an anti-loosening structure of a fitting member of a shaft capable of suppressing diameter expansion deformation of a retaining ring when the retaining ring is inclined as a release load of the fitting member acts on the retaining ring.SOLUTION: A fitting member is fit to one end part outer peripheral surface of a shaft 10. An annular groove 12 is formed on an outer peripheral surface of the shaft 10 located further on a shaft end side than the fitting member. Loosening of the fitting member is prevented by fitting a retaining ring 80 in the annular groove 12. In the retaining ring 80, out of an inner diameter side part 81a and an outer diameter side part 81b formed on a side surface of the side facing the fitting member, on the inner diameter side part 81a, an inner diameter side protrusion 82 protruding further toward the fitting member than the outer diameter side part 81b is formed. When the retaining ring 80 is inclined as a release load of the fitting member acts on the retaining ring 80, the inner diameter side protrusion 82 suppresses the diameter expansion deformation of the retaining ring 80 by coming into contact with the fitting member or the annular groove 12, and prevents the fitting member from coming off from the shaft 10.</p> |
