| 摘要 |
PURPOSE:To satisfy the transmission of torque, by positioning outer cylindrical sections integrally incorporated with a cylindrical section on the outer peripheral side of a fastening ring, and by obtaining a fitting margin between the fastening ring and the outer cylindrical sections. CONSTITUTION:Outer cylindrical sections 12 integrally incorporated with a cylindrical section 11 are projected from the large diameter base end section of the cylindrical section 11 and are positioned on the outer peripheral side of fastening rings 2 so that a slight fitting margin is formed between the fastening rings 12 and the outer cylindrical section 12. This fitting margin has such dimensions that the outer peripheral surfaces of the fastening rings 2 are made in contact with the inner peripheral surface of the outer cylindrical section 12 when the diameter of the fastening rings 2 is enlarged by fastening the latter. With this arrangement, when the fastening rings 2 are fastened, shafts D is radially fastened by the cylindrical section 11 due to the tapering effect, and a torque transmitting section is obtained in this cylindrical section, thereby it is possible to set a large torque transmission. |
