| 摘要 |
PROBLEM TO BE SOLVED: To suppress occurrence of a level difference between core segments while suppressing deterioration of a rubber biting property and a takeout property.SOLUTION: A core body is formed by first core segments each having a small circumferential width and having circumferential both end surfaces as first matching surfaces, and second core segments each having a large circumferential width and having circumferential both end surfaces as second matching surfaces, and the core body is formed into a ring shape by causing the circumferentially adjacent first and second matching surfaces to face each other. The first matching surface is provided with a parallel surface part parallel to a circumferential width central plane of the first core segments radially outside an outwardly inclined surface part inclined radially inward in a direction in which the circumferential width increases. |
