| 摘要 |
PURPOSE:To form an uniform toroidal micro-gap, by a method wherein a hub of a rotor engages a bearing previously positioned and secured to a center of a bearing support which is fastened coaxially with a annular cylinder secured to a flywheel. CONSTITUTION:In a bearing support 37, secured to an outer bend surface of a annular cylinder 32, a cylindrical hub 37a is monolithically formed at the center of the bearing support, and a ball bearing 38 is previously positioned in the hub 37. A rotor 40, attached to an input shaft 20 at the inside of the annular cylinder 32, is provided with a hub 40c mating the inner lace of the ball bearing 38 at the center thereof. The hub 40c is positioned and secured in an axial direction by a snap ring 41, and this permits the formation of an uniform annular micro-gap C in a position in an axial direction of the rotor 40 against the annular cylinder 32 and between the inner peripheral surface of the annular cylinder 32 and the outer peripheral surface of the rotor 40. |
