| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of components for a disk fixing device. SOLUTION: This disk fixing device 3 is provided with one elastic ring 31 made of an elastic material such as rubber around a center axis J1 on a rotor main body 211, and three pressing parts 32 made of resin and arranged almost at equal intervals along the outer peripheral of the elastic ring part 31, and a disk mounted on the rotor main body 211 is fixed onto the rotor main body 211 by receiving the elastic force of the elastic ring 31 on the three pressing parts 32 to press the edge of the disk to the outside. In the disk fixing device 3, the elastic ring 31 and the three pressing parts 32 are integrally molded by two-color molding. Thus, the number of components is reduced for the disk fixing device 3 having a ball chucking structure. COPYRIGHT: (C)2005,JPO&NCIPI
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