ROTARY MEMBER PROVIDED WITH HUB, AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a rotary member provided with a hub especially with reinforced coupling force in a torque transmitting direction between the hub and the rotary member. SOLUTION: An engagement cylinder part 8 is formed at one end part of the hub 2, and an abutment wall 9 is formed to be raised from a base end outer circumferential surface of the engagement cylinder part 8. An installation hole 4 at a center part of a gear 3 is engaged with the engagement cylinder part 8, and one side surface of it is applied to the abutment wall 9. An internal gear-like irregularity part 7 is formed at an outer end side inner circumferential edge part of the installation hole 4 of the engagement cylinder part 8. An outer end side outer circumferential edge part of the engagement cylinder part 8 of the hub 2 is caulked with a number of recessed parts 6 in the irregularity part 7. COPYRIGHT: (C)2004,JPO