| 摘要 |
An AC generator for a vehicle has a bearing box formed at a bracket into which a bearing is inserted and a retainer whereby the bearing is fixed and retained. A retainer (8, 10) is formed into a cylindrical shape and has a threaded portion (81, 101) formed on the cylindrical section while a bearing box (11) has a threaded portion (111, 112) formed thereon. The threaded portion of the retainer is directly engaged with the threaded portion of the bearing box such that a bearing (3) is fixed and retained. There are uniform gaps between the outer peripheral surface of the bearing box or the outer peripheral surface of the retainer and the opposing surface of a cooling fan. |
