| 摘要 |
PURPOSE:To improve the anti-removal effect of roll by providing a projected section for preventing removal of roll independently from the rotary member for supporting the roll at the idle end of a cantilever resilient chip arranged in said rotary member. CONSTITUTION:Cantilever resilient chips 11a, 11b are arranged in the outer end of a rotary member 3 for supporting a roll. In said chips 11a, 11b, the idle end section located near the outer end of the rotary member 3 is resiliently displacable in centripetal direction. While anti-removal sections 4, 15 of roll are formed while projecting further in centrifugal direction than the outercircumferential face of the rotary member 3 at the idle end sections of said chips 11a, 11b. Furthermore, operating opening sections 10a, 10b for pressing said chips 11a, 11b in the centripetal direction are made in the circumferential wall of the rotary member 3. With such structure, anti-removal effect of roll can be improved. |
